diff --git a/drivers/cc110x/cc1100.c b/drivers/cc110x/cc1100.c
index 50a5574fd8c1b553552155b5f90b7c2b1ca2e9e8..c0a40251fb21d9724a1b00001c0c961ab245c008 100644
--- a/drivers/cc110x/cc1100.c
+++ b/drivers/cc110x/cc1100.c
@@ -1,28 +1,13 @@
-/******************************************************************************
-Copyright 2008, Freie Universitaet Berlin (FUB). All rights reserved.
-
-These sources were developed at the Freie Universitaet Berlin, Computer Systems
-and Telematics group (http://cst.mi.fu-berlin.de).
--------------------------------------------------------------------------------
-This file is part of RIOT.
-
-This program is free software: you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free Software
-Foundation, either version 3 of the License, or (at your option) any later
-version.
-
-RIOT is distributed in the hope that it will be useful, but WITHOUT
-ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License along with
-this program. If not, see http://www.gnu.org/licenses/ .
---------------------------------------------------------------------------------
-For further information and questions please use the web site
- http://scatterweb.mi.fu-berlin.de
-and the mailinglist (subscription via web site)
- scatterweb@lists.spline.inf.fu-berlin.de
-*******************************************************************************/
+/**
+ * TI Chipcon CC110x radio driver
+ *
+ * Copyright (C) 2009-2013 Freie Universität Berlin
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ */
/**
* @ingroup dev_cc110x
diff --git a/sys/lib/hash_string.c b/sys/lib/hash_string.c
old mode 100755
new mode 100644
index a7611bcf6d9ec2c93e3b9b6099af6509d0b7b68d..9374a5cdf91b3663c69c3f4b33a9446ad635f8c0
--- a/sys/lib/hash_string.c
+++ b/sys/lib/hash_string.c
@@ -6,12 +6,14 @@ unsigned long hash_string(unsigned char *str)
unsigned long hash = 5381;
int c;
- while ((c = *str++))
- hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
+ while((c = *str++)) {
+ hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
+ }
return hash;
}
-int cmp_string(char* a, char* b) {
- return (strcmp(a,b) == 0);
+int cmp_string(char *a, char *b)
+{
+ return (strcmp(a, b) == 0);
}
diff --git a/sys/lib/hash_string.h b/sys/lib/hash_string.h
old mode 100755
new mode 100644
index a51c6abcc97dc0768bf71519ed0d265160c8d18f..e927cf15dd4d96ab5a136a89966b9dd5a55199c8
--- a/sys/lib/hash_string.h
+++ b/sys/lib/hash_string.h
@@ -1,7 +1,7 @@
#ifndef __HASH_STRING_H
-#define __HASH_STRING_H
+#define __HASH_STRING_H
unsigned long hash_string(unsigned char *str);
-int cmp_string(char* a, char* b);
+int cmp_string(char *a, char *b);
#endif /* __HASH_STRING_H */
diff --git a/sys/lib/hashtable.c b/sys/lib/hashtable.c
old mode 100755
new mode 100644
index 80cbba934345b795d7450be229e61d2c9c3ab19a..305fc68551b5f8b8f42713a5a8b9c62c060bc8a3
--- a/sys/lib/hashtable.c
+++ b/sys/lib/hashtable.c
@@ -14,35 +14,52 @@ Credit for primes table: Aaron Krowne
http://planetmath.org/encyclopedia/GoodHashTablePrimes.html
*/
static const uint32_t primes[] = {
-53, 97, 193, 389,
-769, 1543, 3079, 6151,
-12289, 24593, 49157, 98317,
-196613, 393241, 786433, 1572869,
-3145739, 6291469, 12582917, 25165843,
-50331653, 100663319, 201326611, 402653189,
-805306457, 1610612741
+ 53, 97, 193, 389,
+ 769, 1543, 3079, 6151,
+ 12289, 24593, 49157, 98317,
+ 196613, 393241, 786433, 1572869,
+ 3145739, 6291469, 12582917, 25165843,
+ 50331653, 100663319, 201326611, 402653189,
+ 805306457, 1610612741
};
-const unsigned int prime_table_length = sizeof(primes)/sizeof(primes[0]);
+const unsigned int prime_table_length = sizeof(primes) / sizeof(primes[0]);
const float max_load_factor = 0.65;
/*****************************************************************************/
struct hashtable *
create_hashtable(uint32_t minsize,
- unsigned int (*hashf) (void*),
- int (*eqf) (void*,void*))
+ unsigned int (*hashf)(void *),
+ int (*eqf)(void *, void *))
{
struct hashtable *h;
unsigned int pindex, size = primes[0];
+
/* Check requested hashtable isn't too large */
- if (minsize > (1u << 30)) return NULL;
+ if(minsize > (1u << 30)) {
+ return NULL;
+ }
+
/* Enforce size as prime */
- for (pindex=0; pindex < prime_table_length; pindex++) {
- if (primes[pindex] > minsize) { size = primes[pindex]; break; }
+ for(pindex = 0; pindex < prime_table_length; pindex++) {
+ if(primes[pindex] > minsize) {
+ size = primes[pindex];
+ break;
+ }
}
+
h = (struct hashtable *)malloc(sizeof(struct hashtable));
- if (NULL == h) return NULL; /*oom*/
- h->table = (struct entry **)malloc(sizeof(struct entry*) * size);
- if (NULL == h->table) { free(h); return NULL; } /*oom*/
+
+ if(NULL == h) {
+ return NULL; /*oom*/
+ }
+
+ h->table = (struct entry **)malloc(sizeof(struct entry *) * size);
+
+ if(NULL == h->table) {
+ free(h); /*oom*/
+ return NULL;
+ }
+
memset(h->table, 0, size * sizeof(struct entry *));
h->tablelength = size;
h->primeindex = pindex;
@@ -61,9 +78,9 @@ hash(struct hashtable *h, void *k)
* - logic taken from java 1.4 hashtable source */
unsigned int i = h->hashfn(k);
i += ~(i << 9);
- i ^= ((i >> 14) | (i << 18)); /* >>> */
- i += (i << 4);
- i ^= ((i >> 10) | (i << 22)); /* >>> */
+ i ^= ((i >> 14) | (i << 18)); /* >>> */
+ i += (i << 4);
+ i ^= ((i >> 10) | (i << 22)); /* >>> */
return i;
}
@@ -76,44 +93,54 @@ hashtable_expand(struct hashtable *h)
struct entry *e;
struct entry **pE;
unsigned int newsize, i, index;
+
/* Check we're not hitting max capacity */
- if (h->primeindex == (prime_table_length - 1)) return 0;
+ if(h->primeindex == (prime_table_length - 1)) {
+ return 0;
+ }
+
newsize = primes[++(h->primeindex)];
- newtable = (struct entry **)malloc(sizeof(struct entry*) * newsize);
- if (NULL != newtable)
- {
+ newtable = (struct entry **)malloc(sizeof(struct entry *) * newsize);
+
+ if(NULL != newtable) {
memset(newtable, 0, newsize * sizeof(struct entry *));
+
/* This algorithm is not 'stable'. ie. it reverses the list
* when it transfers entries between the tables */
- for (i = 0; i < h->tablelength; i++) {
- while (NULL != (e = h->table[i])) {
+ for(i = 0; i < h->tablelength; i++) {
+ while(NULL != (e = h->table[i])) {
h->table[i] = e->next;
- index = indexFor(newsize,e->h);
+ index = indexFor(newsize, e->h);
e->next = newtable[index];
newtable[index] = e;
}
}
+
free(h->table);
h->table = newtable;
}
/* Plan B: realloc instead */
- else
- {
+ else {
newtable = (struct entry **)
realloc(h->table, newsize * sizeof(struct entry *));
- if (NULL == newtable) { (h->primeindex)--; return 0; }
+
+ if(NULL == newtable) {
+ (h->primeindex)--;
+ return 0;
+ }
+
h->table = newtable;
memset(newtable[h->tablelength], 0, newsize - h->tablelength);
- for (i = 0; i < h->tablelength; i++) {
- for (pE = &(newtable[i]), e = *pE; e != NULL; e = *pE) {
- index = indexFor(newsize,e->h);
- if (index == i)
- {
+
+ for(i = 0; i < h->tablelength; i++) {
+ for(pE = &(newtable[i]), e = *pE; e != NULL; e = *pE) {
+ index = indexFor(newsize, e->h);
+
+ if(index == i) {
pE = &(e->next);
}
- else
- {
+ else {
*pE = e->next;
e->next = newtable[index];
newtable[index] = e;
@@ -121,6 +148,7 @@ hashtable_expand(struct hashtable *h)
}
}
}
+
h->tablelength = newsize;
h->loadlimit = (unsigned int) ceil(newsize * max_load_factor);
return -1;
@@ -140,18 +168,24 @@ hashtable_insert(struct hashtable *h, void *k, void *v)
/* This method allows duplicate keys - but they shouldn't be used */
unsigned int index;
struct entry *e;
- if (++(h->entrycount) > h->loadlimit)
- {
+
+ if(++(h->entrycount) > h->loadlimit) {
/* Ignore the return value. If expand fails, we should
* still try cramming just this value into the existing table
* -- we may not have memory for a larger table, but one more
* element may be ok. Next time we insert, we'll try expanding again.*/
hashtable_expand(h);
}
+
e = (struct entry *)malloc(sizeof(struct entry));
- if (NULL == e) { --(h->entrycount); return 0; } /*oom*/
- e->h = hash(h,k);
- index = indexFor(h->tablelength,e->h);
+
+ if(NULL == e) {
+ --(h->entrycount); /*oom*/
+ return 0;
+ }
+
+ e->h = hash(h, k);
+ index = indexFor(h->tablelength, e->h);
e->k = k;
e->v = v;
e->next = h->table[index];
@@ -165,15 +199,19 @@ hashtable_search(struct hashtable *h, void *k)
{
struct entry *e;
unsigned int hashvalue, index;
- hashvalue = hash(h,k);
- index = indexFor(h->tablelength,hashvalue);
+ hashvalue = hash(h, k);
+ index = indexFor(h->tablelength, hashvalue);
e = h->table[index];
- while (NULL != e)
- {
+
+ while(NULL != e) {
/* Check hash value to short circuit heavier comparison */
- if ((hashvalue == e->h) && (h->eqfn(k, e->k))) return e->v;
+ if((hashvalue == e->h) && (h->eqfn(k, e->k))) {
+ return e->v;
+ }
+
e = e->next;
}
+
return NULL;
}
@@ -189,15 +227,14 @@ hashtable_remove(struct hashtable *h, void *k)
void *v;
unsigned int hashvalue, index;
- hashvalue = hash(h,k);
- index = indexFor(h->tablelength,hash(h,k));
+ hashvalue = hash(h, k);
+ index = indexFor(h->tablelength, hash(h, k));
pE = &(h->table[index]);
e = *pE;
- while (NULL != e)
- {
+
+ while(NULL != e) {
/* Check hash value to short circuit heavier comparison */
- if ((hashvalue == e->h) && (h->eqfn(k, e->k)))
- {
+ if((hashvalue == e->h) && (h->eqfn(k, e->k))) {
*pE = e->next;
h->entrycount--;
v = e->v;
@@ -205,9 +242,11 @@ hashtable_remove(struct hashtable *h, void *k)
free(e);
return v;
}
+
pE = &(e->next);
e = e->next;
}
+
return NULL;
}
@@ -219,24 +258,33 @@ hashtable_destroy(struct hashtable *h, int free_values)
unsigned int i;
struct entry *e, *f;
struct entry **table = h->table;
- if (free_values)
- {
- for (i = 0; i < h->tablelength; i++)
- {
+
+ if(free_values) {
+ for(i = 0; i < h->tablelength; i++) {
e = table[i];
- while (NULL != e)
- { f = e; e = e->next; freekey(f->k); free(f->v); free(f); }
+
+ while(NULL != e) {
+ f = e;
+ e = e->next;
+ freekey(f->k);
+ free(f->v);
+ free(f);
+ }
}
}
- else
- {
- for (i = 0; i < h->tablelength; i++)
- {
+ else {
+ for(i = 0; i < h->tablelength; i++) {
e = table[i];
- while (NULL != e)
- { f = e; e = e->next; freekey(f->k); free(f); }
+
+ while(NULL != e) {
+ f = e;
+ e = e->next;
+ freekey(f->k);
+ free(f);
+ }
}
}
+
free(h->table);
free(h);
}
@@ -244,23 +292,23 @@ hashtable_destroy(struct hashtable *h, int free_values)
/*
* Copyright (c) 2002, Christopher Clark
* All rights reserved.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
- *
+ *
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
- *
+ *
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- *
+ *
* * Neither the name of the original author; nor the names of any contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
- *
- *
+ *
+ *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
diff --git a/sys/lib/hashtable.h b/sys/lib/hashtable.h
old mode 100755
new mode 100644
index e53aea267b82913e845b3f3eaf868a7923210322..99eb88efc9391a12ba45f5b61929c64d9792f765
--- a/sys/lib/hashtable.h
+++ b/sys/lib/hashtable.h
@@ -19,7 +19,7 @@ struct hashtable;
* v = (struct some_value *) malloc(sizeof(struct some_value));
*
* (initialise k and v to suitable values)
- *
+ *
* if (! hashtable_insert(h,k,v) )
* { exit(-1); }
*
@@ -33,7 +33,7 @@ struct hashtable;
/* Macros may be used to define type-safe(r) hashtable access functions, with
* methods specialized to take known key and value types as parameters.
- *
+ *
* Example:
*
* Insert this at the start of your file:
@@ -63,7 +63,7 @@ struct hashtable;
/*****************************************************************************
* create_hashtable
-
+
* @name create_hashtable
* @param minsize minimum initial size of hashtable
* @param hashfunction function for hashing keys
@@ -73,12 +73,12 @@ struct hashtable;
struct hashtable *
create_hashtable(uint32_t minsize,
- unsigned int (*hashfunction) (void*),
- int (*key_eq_fn) (void*,void*));
+ unsigned int (*hashfunction)(void *),
+ int (*key_eq_fn)(void *, void *));
/*****************************************************************************
* hashtable_insert
-
+
* @name hashtable_insert
* @param h the hashtable to insert into
* @param k the key - hashtable claims ownership and will free on removal
@@ -95,7 +95,7 @@ create_hashtable(uint32_t minsize,
* If in doubt, remove before insert.
*/
-int
+int
hashtable_insert(struct hashtable *h, void *k, void *v);
#define DEFINE_HASHTABLE_INSERT(fnname, keytype, valuetype) \
@@ -106,7 +106,7 @@ int fnname (struct hashtable *h, keytype *k, valuetype *v) \
/*****************************************************************************
* hashtable_search
-
+
* @name hashtable_search
* @param h the hashtable to search
* @param k the key to search for - does not claim ownership
@@ -124,7 +124,7 @@ valuetype * fnname (struct hashtable *h, keytype *k) \
/*****************************************************************************
* hashtable_remove
-
+
* @name hashtable_remove
* @param h the hashtable to remove the item from
* @param k the key to search for - does not claim ownership
@@ -143,7 +143,7 @@ valuetype * fnname (struct hashtable *h, keytype *k) \
/*****************************************************************************
* hashtable_count
-
+
* @name hashtable_count
* @param h the hashtable
* @return the number of items stored in the hashtable
@@ -154,7 +154,7 @@ hashtable_count(struct hashtable *h);
/*****************************************************************************
* hashtable_destroy
-
+
* @name hashtable_destroy
* @param h the hashtable
* @param free_values whether to call 'free' on the remaining values
@@ -168,23 +168,23 @@ hashtable_destroy(struct hashtable *h, int free_values);
/*
* Copyright (c) 2002, Christopher Clark
* All rights reserved.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
- *
+ *
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
- *
+ *
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- *
+ *
* * Neither the name of the original author; nor the names of any contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
- *
- *
+ *
+ *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
diff --git a/sys/lib/hashtable_private.h b/sys/lib/hashtable_private.h
old mode 100755
new mode 100644
index 3e95f600577540095d20b2551d1198556cf36361..58bbef81f4d5873bfcad51deb9fe9ab1b3cb60e1
--- a/sys/lib/hashtable_private.h
+++ b/sys/lib/hashtable_private.h
@@ -6,8 +6,7 @@
#include "hashtable.h"
/*****************************************************************************/
-struct entry
-{
+struct entry {
void *k, *v;
unsigned int h;
struct entry *next;
@@ -19,8 +18,8 @@ struct hashtable {
unsigned int entrycount;
unsigned int loadlimit;
unsigned int primeindex;
- unsigned int (*hashfn) (void *k);
- int (*eqfn) (void *k1, void *k2);
+ unsigned int (*hashfn)(void *k);
+ int (*eqfn)(void *k1, void *k2);
};
/*****************************************************************************/
@@ -30,7 +29,8 @@ hash(struct hashtable *h, void *k);
/*****************************************************************************/
/* indexFor */
static inline unsigned int
-indexFor(unsigned int tablelength, unsigned int hashvalue) {
+indexFor(unsigned int tablelength, unsigned int hashvalue)
+{
return (hashvalue % tablelength);
};
@@ -54,23 +54,23 @@ indexFor(unsigned int tablelength, unsigned int hashvalue)
/*
* Copyright (c) 2002, Christopher Clark
* All rights reserved.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
- *
+ *
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
- *
+ *
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- *
+ *
* * Neither the name of the original author; nor the names of any contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
- *
- *
+ *
+ *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
diff --git a/sys/lib/ringbuffer.c b/sys/lib/ringbuffer.c
old mode 100755
new mode 100644
index a64fa836a525d98dcf1797097ac9e6b9a16e1a4e..d0039495c2c9d29fc1186915568085905c022745
--- a/sys/lib/ringbuffer.c
+++ b/sys/lib/ringbuffer.c
@@ -1,3 +1,20 @@
+/**
+ * Ringbuffer implementation
+ *
+ * Copyright (C) 2013 Freie Universität Berlin
+ * Copyright (C) 2013 INRIA
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup sys_lib
+ * @{
+ * @file ringbuffer.c
+ * @author Kaspar Schleiser <kaspar.schleiser@fu-berlin.de>
+ * @}
+ */
+
#include <stdio.h>
#include <stdint.h>
#include <string.h>
@@ -13,7 +30,8 @@
//#define DEBUG(...) printf (__VA_ARGS__)
#define DEBUG(...)
-void ringbuffer_init(ringbuffer_t *rb, char* buffer, unsigned int bufsize) {
+void ringbuffer_init(ringbuffer_t *rb, char *buffer, unsigned int bufsize)
+{
rb->buf = buffer;
rb->start = 0;
rb->end = 0;
@@ -21,37 +39,53 @@ void ringbuffer_init(ringbuffer_t *rb, char* buffer, unsigned int bufsize) {
rb->avail = 0;
}
-void rb_add_elements(ringbuffer_t* rb, char *buf, int n) {
- for (int i = 0; i < n; i++) {
+void rb_add_elements(ringbuffer_t *rb, char *buf, int n)
+{
+ for(int i = 0; i < n; i++) {
rb_add_element(rb, buf[i]);
}
}
-void rb_add_element(ringbuffer_t* rb, char c) {
- if (rb->avail == rb->size) rb_get_element(rb);
+void rb_add_element(ringbuffer_t *rb, char c)
+{
+ if(rb->avail == rb->size) {
+ rb_get_element(rb);
+ }
rb->buf[rb->end++] = c;
- if (rb->end >= rb->size) rb->end = 0;
+
+ if(rb->end >= rb->size) {
+ rb->end = 0;
+ }
rb->avail++;
}
-int rb_get_element(ringbuffer_t *rb) {
- if (rb->avail == 0) return -1;
-
+int rb_get_element(ringbuffer_t *rb)
+{
+ if(rb->avail == 0) {
+ return -1;
+ }
+
rb->avail--;
int c = (char)rb->buf[rb->start++];
- if (rb->start >= rb->size) rb->start = 0;
+
+ if(rb->start >= rb->size) {
+ rb->start = 0;
+ }
return c;
}
-int rb_get_elements(ringbuffer_t *rb, char* buf, int n) {
+int rb_get_elements(ringbuffer_t *rb, char *buf, int n)
+{
int count = 0;
- while (rb->avail && (count < n)) {
+
+ while(rb->avail && (count < n)) {
buf[count++] = rb_get_element(rb);
}
+
return count;
}
@@ -71,7 +105,7 @@ int main(int argc, char *argv[] ){
rb_add_element(&r, 8);
rb_add_element(&r, 9);
rb_add_element(&r, 10);
-
+
int c;
while ( r.avail ) {
c = rb_get_element(&r);
@@ -103,7 +137,7 @@ int main(int argc, char *argv[] ){
rb_add_element(&r, 8);
rb_add_element(&r, 9);
rb_add_element(&r, 10);
-
+
while ( r.avail ) {
c = rb_get_element(&r);
if (c == -1) break;
diff --git a/sys/lib/ringbuffer.h b/sys/lib/ringbuffer.h
old mode 100755
new mode 100644
index 3e646ae7951e63aa64965a0fb6bd3fa59193f002..0528b31bcedfedb52050f447d77aec7c076e1ca4
--- a/sys/lib/ringbuffer.h
+++ b/sys/lib/ringbuffer.h
@@ -1,5 +1,22 @@
+/**
+ * Ringbuffer header
+ *
+ * Copyright (C) 2013 Freie Universität Berlin
+ * Copyright (C) 2013 INRIA
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup sys_lib
+ * @{
+ * @file ringbuffer.h
+ * @author Kaspar Schleiser <kaspar.schleiser@fu-berlin.de>
+ * @}
+ */
+
#ifndef __RINGBUFFER_H
-#define __RINGBUFFER_H
+#define __RINGBUFFER_H
typedef struct ringbuffer {
char *buf;
@@ -9,7 +26,7 @@ typedef struct ringbuffer {
unsigned int avail;
} ringbuffer_t;
-void ringbuffer_init(ringbuffer_t *rb, char* buffer, unsigned int bufsize);
+void ringbuffer_init(ringbuffer_t *rb, char *buffer, unsigned int bufsize);
void rb_add_element(ringbuffer_t *rb, char c);
void rb_add_elements(ringbuffer_t *rb, char *buf, int n);
int rb_get_element(ringbuffer_t *rb);
diff --git a/sys/logd/logd.c b/sys/logd/logd.c
index 2552e7a78d1cff82ab3cb3c4c099fb7f229abc73..f7b707f6829a8ba7bd1c870b8f62feb60ed97b24 100644
--- a/sys/logd/logd.c
+++ b/sys/logd/logd.c
@@ -1,31 +1,15 @@
-/******************************************************************************
-Copyright 2009-2010, Freie Universitaet Berlin (FUB). All rights reserved.
-
-These sources were developed at the Freie Universitaet Berlin, Computer Systems
-and Telematics group (http://cst.mi.fu-berlin.de).
--------------------------------------------------------------------------------
-This file is part of RIOT.
-
-This program is free software: you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free Software
-Foundation, either version 3 of the License, or (at your option) any later
-version.
-
-RIOT is distributed in the hope that it will be useful, but WITHOUT
-ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License along with
-this program. If not, see http://www.gnu.org/licenses/ .
---------------------------------------------------------------------------------
-For further information and questions please use the web site
- http://scatterweb.mi.fu-berlin.de
-and the mailinglist (subscription via web site)
- scatterweb@lists.spline.inf.fu-berlin.de
-*******************************************************************************/
+/**
+ * Logging daemon
+ *
+ * Copyright (C) 2009-2013 Freie Universitaet Berlin
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
/**
- * @file
+ * @file logd.c
* @brief Simple logging demon implementation
*
* @author Freie Universität Berlin, Computer Systems & Telematics
@@ -39,26 +23,25 @@ and the mailinglist (subscription via web site)
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
-// core
+/* core */
#include "msg.h"
#include "flags.h"
#include "mutex.h"
#include "thread.h"
#include "kernel.h"
-// system
+/* system */
#include "logd.h"
#include "list.h"
-typedef struct log_queue_t
-{
- list_node_t listnode;
- char* str;
- int str_len;
+typedef struct {
+ list_node_t listnode;
+ char *str;
+ int str_len;
} log_queue_t;
static volatile int log_pid = -1;
static int logd_stack_size = LOGD_STACK_SIZE_NORMAL;
-static FILE* fh = NULL;
+static FILE *fh = NULL;
static int log_count = 0;
static mutex_t log_mutex;
static list_t log_msg_queue;
@@ -69,125 +52,156 @@ static volatile bool echo_on = false;
static void close_file_handle(void)
{
- if (fh != NULL) {
- fclose(fh);
- fh = NULL;
- }
+ if(fh != NULL) {
+ fclose(fh);
+ fh = NULL;
+ }
}
-static void write_to_file(char* str, int str_len)
+static void write_to_file(char *str, int str_len)
{
- if (fh != NULL && str_len > 0) {
- if (fwrite(str, sizeof(char), str_len, fh) != str_len) {
- if (echo_on && logd_stack_size >= LOGD_STACK_SIZE_CONSOLE) {
- printf("LOGD [WARN]: file write failed, closing file\n");
- }
- close_file_handle();
- return;
- }
- if (fflush(fh) == EOF) {
- if (echo_on && logd_stack_size >= LOGD_STACK_SIZE_CONSOLE) {
- printf("LOGD [WARN]: file write failed, closing file\n");
- }
- close_file_handle();
- return;
- }
- } else {
- fh = fopen("/LOGD.LOG", "w");
- if (!fh) {
- if (echo_on && logd_stack_size >= LOGD_STACK_SIZE_CONSOLE) {
- printf("LOGD [WARN]: file reopen failed, damn!\n");
- }
- } else {
- write_to_file(str, str_len);
- }
- }
+ if(fh != NULL && str_len > 0) {
+ if(fwrite(str, sizeof(char), str_len, fh) != str_len) {
+ if(echo_on && logd_stack_size >= LOGD_STACK_SIZE_CONSOLE) {
+ printf("LOGD [WARN]: file write failed, closing file\n");
+ }
+
+ close_file_handle();
+ return;
+ }
+
+ if(fflush(fh) == EOF) {
+ if(echo_on && logd_stack_size >= LOGD_STACK_SIZE_CONSOLE) {
+ printf("LOGD [WARN]: file write failed, closing file\n");
+ }
+
+ close_file_handle();
+ return;
+ }
+ }
+ else {
+ fh = fopen("/LOGD.LOG", "w");
+
+ if(!fh) {
+ if(echo_on && logd_stack_size >= LOGD_STACK_SIZE_CONSOLE) {
+ printf("LOGD [WARN]: file reopen failed, damn!\n");
+ }
+ }
+ else {
+ write_to_file(str, str_len);
+ }
+ }
}
static void logd_process(void)
{
- msg m;
- log_queue_t* node;
- do
- {
- if (!exit_flag) msg_receive(&m);
- mutex_lock(&log_mutex);
- while ((node = (log_queue_t*) list_remove_head(&log_msg_queue)) != NULL) {
- write_to_file(node->str, node->str_len);
- if (echo_on && logd_stack_size >= LOGD_STACK_SIZE_CONSOLE) {
- printf("%s", node->str);
- }
- log_count++;
- free(node->str);
- free(node);
- }
- mutex_unlock(&log_mutex, 0);
- } while (m.type != MSG_EXIT && !exit_flag);
- /* Logging thread is terminating, close log file */
- close_file_handle();
+ msg m;
+ log_queue_t *node;
+
+ do {
+ if(!exit_flag) {
+ msg_receive(&m);
+ }
+
+ mutex_lock(&log_mutex);
+
+ while((node = (log_queue_t *) list_remove_head(&log_msg_queue)) != NULL) {
+ write_to_file(node->str, node->str_len);
+
+ if(echo_on && logd_stack_size >= LOGD_STACK_SIZE_CONSOLE) {
+ printf("%s", node->str);
+ }
+
+ log_count++;
+ free(node->str);
+ free(node);
+ }
+
+ mutex_unlock(&log_mutex, 0);
+ }
+ while(m.type != MSG_EXIT && !exit_flag);
+
+ /* Logging thread is terminating, close log file */
+ close_file_handle();
}
/*---------------------------------------------------------------------------*/
-static void logd_init0(void) {
- fh = fopen("/LOGD.LOG", "w");
- if (!fh) return;
- log_pid = thread_create(logd_stack_size, PRIORITY_LOGD, CREATE_STACKTEST, logd_process, "logd");
+static void logd_init0(void)
+{
+ fh = fopen("/LOGD.LOG", "w");
+
+ if(!fh) {
+ return;
+ }
+
+ log_pid = thread_create(logd_stack_size, PRIORITY_LOGD, CREATE_STACKTEST, logd_process, "logd");
}
void logd_init(int stack_size)
{
- logd_stack_size = stack_size;
- mutex_init(&log_mutex);
- list_init(&log_msg_queue);
- logd_init0();
+ logd_stack_size = stack_size;
+ mutex_init(&log_mutex);
+ list_init(&log_msg_queue);
+ logd_init0();
}
void logd_set_console_enabled(bool enabled)
{
- echo_on = enabled;
+ echo_on = enabled;
}
-bool logd_log(char* str, int str_len)
+bool logd_log(char *str, int str_len)
{
- msg m;
- // Test if logd process was created
- if (log_pid == -1) {
- // no logd created, because fopen() on log file failed. So try again
- logd_init0();
- if (log_pid == -1) {
- // Still errors opening log file, exit now
- return false;
- }
- }
- log_queue_t* lq = malloc(sizeof(*lq));
- if (lq == NULL) return false;
- lq->str = malloc(sizeof(char) * str_len + 1); // 1 byte for string termination char
- if (lq->str == NULL) {
- free(lq);
- return false;
- }
- strncpy(lq->str, str, str_len);
- lq->str_len = str_len;
- lq->str[str_len] = '\0'; // add string termination char at end of buffer
- mutex_lock(&log_mutex);
- list_append(&log_msg_queue, (list_node_t*) lq);
- mutex_unlock(&log_mutex, 0);
- m.type = MSG_POLL;
- m.content.ptr = NULL;
- msg_send(&m, log_pid, false);
- return true;
+ msg m;
+
+ /* Test if logd process was created */
+ if(log_pid == -1) {
+ /* no logd created, because fopen() on log file failed. So try again */
+ logd_init0();
+
+ if(log_pid == -1) {
+ /* Still errors opening log file, exit now */
+ return false;
+ }
+ }
+
+ log_queue_t *lq = malloc(sizeof(*lq));
+
+ if(lq == NULL) {
+ return false;
+ }
+
+ lq->str = malloc(sizeof(char) * str_len + 1); /* 1 byte for string termination char */
+
+ if(lq->str == NULL) {
+ free(lq);
+ return false;
+ }
+
+ strncpy(lq->str, str, str_len);
+ lq->str_len = str_len;
+ lq->str[str_len] = '\0'; /* add string termination char at end of buffer */
+ mutex_lock(&log_mutex);
+ list_append(&log_msg_queue, (list_node_t *) lq);
+ mutex_unlock(&log_mutex, 0);
+ m.type = MSG_POLL;
+ m.content.ptr = NULL;
+ msg_send(&m, log_pid, false);
+ return true;
}
void logd_exit(void)
{
- msg m;
- // Test if logd process was created
- if (log_pid == -1) {
- return;
- }
- exit_flag = true;
- m.type = MSG_EXIT;
- m.content.ptr = NULL;
- msg_send(&m, log_pid, false);
+ msg m;
+
+ /* Test if logd process was created */
+ if(log_pid == -1) {
+ return;
+ }
+
+ exit_flag = true;
+ m.type = MSG_EXIT;
+ m.content.ptr = NULL;
+ msg_send(&m, log_pid, false);
}
diff --git a/sys/net/destiny/destiny.c b/sys/net/destiny/destiny.c
index 84862d56449890359276345cbbb729834edd86b9..c2f069272bf83da12e8b0847d254283fd0ffdcb3 100644
--- a/sys/net/destiny/destiny.c
+++ b/sys/net/destiny/destiny.c
@@ -1,8 +1,18 @@
-/*
- * destiny.c
+/**
+ * Destiny transpor layer implementation
*
- * Created on: 03.09.2011
- * Author: Oliver
+ * Copyright (C) 2013 INRIA.
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup destiny
+ * @{
+ * @file destiny.c
+ * @brief transpor layer functions
+ * @author Oliver Gesch <oliver.gesch@googlemail.com>
+ * @}
*/
#include <thread.h>
@@ -17,28 +27,34 @@
#include "destiny.h"
void init_transport_layer(void)
- {
- printf("Initializing transport layer packages. Size of socket_type: %u\n", sizeof(socket_internal_t));
- // SOCKETS
- memset(sockets, 0, MAX_SOCKETS*sizeof(socket_internal_t));
+{
+ printf("Initializing transport layer packages. Size of socket_type: %u\n",
+ sizeof(socket_internal_t));
+ /* SOCKETS */
+ memset(sockets, 0, MAX_SOCKETS * sizeof(socket_internal_t));
- // UDP
- int udp_thread_pid = thread_create(udp_stack_buffer, UDP_STACK_SIZE, PRIORITY_MAIN, CREATE_STACKTEST, udp_packet_handler, "udp_packet_handler");
- set_udp_packet_handler_pid(udp_thread_pid);
+ /* UDP */
+ int udp_thread_pid = thread_create(udp_stack_buffer, UDP_STACK_SIZE,
+ PRIORITY_MAIN, CREATE_STACKTEST,
+ udp_packet_handler,"udp_packet_handler");
+ set_udp_packet_handler_pid(udp_thread_pid);
- // TCP
- timex_t now;
- vtimer_now(&now);
- srand(now.microseconds);
+ /* TCP */
+ timex_t now;
+ vtimer_now(&now);
+ srand(now.microseconds);
#ifdef TCP_HC
- printf("TCP_HC enabled!\n");
- global_context_counter = rand();
+ printf("TCP_HC enabled!\n");
+ global_context_counter = rand();
#endif
- global_sequence_counter = rand();
+ global_sequence_counter = rand();
- int tcp_thread_pid = thread_create(tcp_stack_buffer, TCP_STACK_SIZE, PRIORITY_MAIN, CREATE_STACKTEST, tcp_packet_handler, "tcp_packet_handler");
- set_tcp_packet_handler_pid(tcp_thread_pid);
+ int tcp_thread_pid = thread_create(tcp_stack_buffer, TCP_STACK_SIZE,
+ PRIORITY_MAIN, CREATE_STACKTEST,
+ tcp_packet_handler, "tcp_packet_handler");
+ set_tcp_packet_handler_pid(tcp_thread_pid);
- thread_create(tcp_timer_stack, TCP_TIMER_STACKSIZE, PRIORITY_MAIN+1, CREATE_STACKTEST, tcp_general_timer, "tcp_general_timer");
+ thread_create(tcp_timer_stack, TCP_TIMER_STACKSIZE, PRIORITY_MAIN + 1,
+ CREATE_STACKTEST, tcp_general_timer, "tcp_general_timer");
- }
+}
diff --git a/sys/net/destiny/socket.c b/sys/net/destiny/socket.c
index 3feeb40665adfddb7ceb1d339f91d5c167b45bd0..5f8af82ff826caf6225371c4afe75a7b936f1c38 100644
--- a/sys/net/destiny/socket.c
+++ b/sys/net/destiny/socket.c
@@ -1,9 +1,20 @@
-/*
- * socket.c
+/**
+ * Destiny socket API
*
- * Created on: 16.09.2011
- * Author: Oliver
+ * Copyright (C) 2013 INRIA.
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup destiny
+ * @{
+ * @file socket.c
+ * @brief functions for BSD socket API
+ * @author Oliver Gesch <oliver.gesch@googlemail.com>
+ * @}
*/
+
#include <thread.h>
#include <stdio.h>
#include <string.h>
@@ -23,1228 +34,1305 @@
socket_internal_t sockets[MAX_SOCKETS];
void printf_tcp_context(tcp_hc_context_t *current_tcp_context)
- {
- printf("Context: %u\n", current_tcp_context->context_id);
- printf("Rcv Seq: %" PRIu32 " Rcv Ack: %" PRIu32 ", Rcv Wnd: %u\n", current_tcp_context->seq_rcv, current_tcp_context->ack_rcv, current_tcp_context->wnd_rcv);
- printf("Snd Seq: %" PRIu32 " Snd Ack: %" PRIu32 ", Snd Wnd: %u\n", current_tcp_context->seq_snd, current_tcp_context->ack_snd, current_tcp_context->wnd_snd);
- }
-
-void print_tcp_flags (tcp_hdr_t *tcp_header)
- {
- printf("FLAGS: ");
- switch(tcp_header->reserved_flags)
- {
- case TCP_ACK:
- {
- printf("ACK ");
- break;
- }
- case TCP_RST:
- {
- printf("RST ");
- break;
- }
- case TCP_SYN:
- {
- printf("SYN ");
- break;
- }
- case TCP_FIN:
- {
- printf("FIN ");
- break;
- }
- case TCP_URG_PSH:
- {
- printf("URG PSH ");
- break;
- }
- case TCP_SYN_ACK:
- {
- printf("SYN ACK ");
- break;
- }
- case TCP_FIN_ACK:
- {
- printf("FIN ACK ");
- break;
- }
- }
- printf("\n");
- }
+{
+ printf("Context: %u\n", current_tcp_context->context_id);
+ printf("Rcv Seq: %" PRIu32 " Rcv Ack: %" PRIu32 ", Rcv Wnd: %u\n", current_tcp_context->seq_rcv, current_tcp_context->ack_rcv, current_tcp_context->wnd_rcv);
+ printf("Snd Seq: %" PRIu32 " Snd Ack: %" PRIu32 ", Snd Wnd: %u\n", current_tcp_context->seq_snd, current_tcp_context->ack_snd, current_tcp_context->wnd_snd);
+}
+
+void print_tcp_flags(tcp_hdr_t *tcp_header)
+{
+ printf("FLAGS: ");
+
+ switch(tcp_header->reserved_flags) {
+ case TCP_ACK: {
+ printf("ACK ");
+ break;
+ }
+
+ case TCP_RST: {
+ printf("RST ");
+ break;
+ }
+
+ case TCP_SYN: {
+ printf("SYN ");
+ break;
+ }
+
+ case TCP_FIN: {
+ printf("FIN ");
+ break;
+ }
+
+ case TCP_URG_PSH: {
+ printf("URG PSH ");
+ break;
+ }
+
+ case TCP_SYN_ACK: {
+ printf("SYN ACK ");
+ break;
+ }
+
+ case TCP_FIN_ACK: {
+ printf("FIN ACK ");
+ break;
+ }
+ }
+
+ printf("\n");
+}
void print_tcp_cb(tcp_cb_t *cb)
- {
- timex_t now;
- vtimer_now(&now);
- printf("Send_ISS: %" PRIu32 "\nSend_UNA: %" PRIu32 "\nSend_NXT: %" PRIu32 "\nSend_WND: %u\n", cb->send_iss, cb->send_una, cb->send_nxt, cb->send_wnd);
- printf("Rcv_IRS: %" PRIu32 "\nRcv_NXT: %" PRIu32 "\nRcv_WND: %u\n", cb->rcv_irs, cb->rcv_nxt, cb->rcv_wnd);
- printf("Time difference: %" PRIu32 ", No_of_retries: %u, State: %u\n\n", timex_sub(now, cb->last_packet_time).microseconds, cb->no_of_retries, cb->state);
- }
-
-void print_tcp_status(int in_or_out, ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header, socket_t *tcp_socket)
- {
- printf("--- %s TCP packet: ---\n", (in_or_out == INC_PACKET ? "Incoming" : "Outgoing"));
- printf("IPv6 Source:");
- ipv6_print_addr(&ipv6_header->srcaddr);
- printf("IPv6 Dest:");
- ipv6_print_addr(&ipv6_header->destaddr);
- printf("TCP Length: %x\n", ipv6_header->length-TCP_HDR_LEN);
- printf("Source Port: %x, Dest. Port: %x\n", NTOHS(tcp_header->src_port), NTOHS(tcp_header->dst_port));
- printf("Source Port: %u, Dest. Port: %u\n", NTOHS(tcp_header->src_port), NTOHS(tcp_header->dst_port));
- printf("ACK: %" PRIu32 ", SEQ: %" PRIu32 ", Window: %x\n", tcp_header->ack_nr, tcp_header->seq_nr, tcp_header->window);
- printf("ACK: %" PRIu32 ", SEQ: %" PRIu32 ", Window: %u\n", tcp_header->ack_nr, tcp_header->seq_nr, tcp_header->window);
- print_tcp_flags(tcp_header);
- print_tcp_cb(&tcp_socket->tcp_control);
+{
+ timex_t now;
+ vtimer_now(&now);
+ printf("Send_ISS: %" PRIu32 "\nSend_UNA: %" PRIu32 "\nSend_NXT: %" PRIu32 "\nSend_WND: %u\n",
+ cb->send_iss, cb->send_una, cb->send_nxt, cb->send_wnd);
+ printf("Rcv_IRS: %" PRIu32 "\nRcv_NXT: %" PRIu32 "\nRcv_WND: %u\n",
+ cb->rcv_irs, cb->rcv_nxt, cb->rcv_wnd);
+ printf("Time difference: %" PRIu32 ", No_of_retries: %u, State: %u\n\n",
+ timex_sub(now, cb->last_packet_time).microseconds, cb->no_of_retries, cb->state);
+}
+
+void print_tcp_status(int in_or_out, ipv6_hdr_t *ipv6_header,
+ tcp_hdr_t *tcp_header, socket_t *tcp_socket)
+{
+ printf("--- %s TCP packet: ---\n",
+ (in_or_out == INC_PACKET ? "Incoming" : "Outgoing"));
+ printf("IPv6 Source:");
+ ipv6_print_addr(&ipv6_header->srcaddr);
+ printf("IPv6 Dest:");
+ ipv6_print_addr(&ipv6_header->destaddr);
+ printf("TCP Length: %x\n", ipv6_header->length - TCP_HDR_LEN);
+ printf("Source Port: %x, Dest. Port: %x\n",
+ NTOHS(tcp_header->src_port), NTOHS(tcp_header->dst_port));
+ printf("Source Port: %u, Dest. Port: %u\n",
+ NTOHS(tcp_header->src_port), NTOHS(tcp_header->dst_port));
+ printf("ACK: %" PRIu32 ", SEQ: %" PRIu32 ", Window: %x\n",
+ tcp_header->ack_nr, tcp_header->seq_nr, tcp_header->window);
+ printf("ACK: %" PRIu32 ", SEQ: %" PRIu32 ", Window: %u\n",
+ tcp_header->ack_nr, tcp_header->seq_nr, tcp_header->window);
+ print_tcp_flags(tcp_header);
+ print_tcp_cb(&tcp_socket->tcp_control);
#ifdef TCP_HC
- printf_tcp_context(&tcp_socket->tcp_control.tcp_context);
+ printf_tcp_context(&tcp_socket->tcp_control.tcp_context);
#endif
- }
+}
void print_socket(socket_t *current_socket)
- {
- printf("Domain: %i, Type: %i, Protocol: %i \n",
- current_socket->domain,
- current_socket->type,
- current_socket->protocol);
- ipv6_print_addr(¤t_socket->local_address.sin6_addr);
- ipv6_print_addr(¤t_socket->foreign_address.sin6_addr);
- printf("Local Port: %u, Foreign Port: %u\n", NTOHS(current_socket->local_address.sin6_port),
- NTOHS(current_socket->foreign_address.sin6_port));
- }
+{
+ printf("Domain: %i, Type: %i, Protocol: %i \n",
+ current_socket->domain,
+ current_socket->type,
+ current_socket->protocol);
+ ipv6_print_addr(¤t_socket->local_address.sin6_addr);
+ ipv6_print_addr(¤t_socket->foreign_address.sin6_addr);
+ printf("Local Port: %u, Foreign Port: %u\n",
+ NTOHS(current_socket->local_address.sin6_port),
+ NTOHS(current_socket->foreign_address.sin6_port));
+}
void print_internal_socket(socket_internal_t *current_socket_internal)
- {
- socket_t *current_socket = ¤t_socket_internal->socket_values;
- printf("\n--------------------------\n");
- printf("ID: %i, RECV PID: %i SEND PID: %i\n", current_socket_internal->socket_id, current_socket_internal->recv_pid, current_socket_internal->send_pid);
- print_socket(current_socket);
- printf("\n--------------------------\n");
- }
+{
+ socket_t *current_socket = ¤t_socket_internal->socket_values;
+ printf("\n--------------------------\n");
+ printf("ID: %i, RECV PID: %i SEND PID: %i\n",
+ current_socket_internal->socket_id, current_socket_internal->recv_pid,
+ current_socket_internal->send_pid);
+ print_socket(current_socket);
+ printf("\n--------------------------\n");
+}
socket_internal_t *getSocket(uint8_t s)
- {
- if (exists_socket(s))
- {
- return &(sockets[s-1]);
- }
- else
- {
- return NULL;
- }
- }
+{
+ if(exists_socket(s)) {
+ return &(sockets[s - 1]);
+ }
+ else {
+ return NULL;
+ }
+}
void print_sockets(void)
- {
- int i;
- printf("\n--- Socket list: ---\n");
- for (i = 1; i < MAX_SOCKETS+1; i++)
- {
- if(getSocket(i) != NULL)
- {
- print_internal_socket(getSocket(i));
- }
- }
- }
+{
+ int i;
+ printf("\n--- Socket list: ---\n");
+
+ for(i = 1; i < MAX_SOCKETS + 1; i++) {
+ if(getSocket(i) != NULL) {
+ print_internal_socket(getSocket(i));
+ }
+ }
+}
bool exists_socket(uint8_t socket)
- {
- if (sockets[socket-1].socket_id == 0)
- {
- return false;
- }
- else
- {
- return true;
- }
- }
+{
+ if(sockets[socket - 1].socket_id == 0) {
+ return false;
+ }
+ else {
+ return true;
+ }
+}
void close_socket(socket_internal_t *current_socket)
- {
- memset(current_socket, 0, sizeof(socket_internal_t));
- }
+{
+ memset(current_socket, 0, sizeof(socket_internal_t));
+}
bool isUDPSocket(uint8_t s)
- {
- if ( (exists_socket(s)) &&
- (getSocket(s)->socket_values.domain == PF_INET6) &&
- (getSocket(s)->socket_values.type == SOCK_DGRAM) &&
- ((getSocket(s)->socket_values.protocol == IPPROTO_UDP) ||
- (getSocket(s)->socket_values.protocol == 0)))
- return true;
- else
- return false;
- }
+{
+ if((exists_socket(s)) &&
+ (getSocket(s)->socket_values.domain == PF_INET6) &&
+ (getSocket(s)->socket_values.type == SOCK_DGRAM) &&
+ ((getSocket(s)->socket_values.protocol == IPPROTO_UDP) ||
+ (getSocket(s)->socket_values.protocol == 0))) {
+ return true;
+ }
+ else {
+ return false;
+ }
+}
bool isTCPSocket(uint8_t s)
- {
- if ( (exists_socket(s)) &&
- (getSocket(s)->socket_values.domain == PF_INET6) &&
- (getSocket(s)->socket_values.type == SOCK_STREAM) &&
- ((getSocket(s)->socket_values.protocol == IPPROTO_TCP) ||
- (getSocket(s)->socket_values.protocol == 0)))
- return true;
- else
- return false;
- }
+{
+ if((exists_socket(s)) &&
+ (getSocket(s)->socket_values.domain == PF_INET6) &&
+ (getSocket(s)->socket_values.type == SOCK_STREAM) &&
+ ((getSocket(s)->socket_values.protocol == IPPROTO_TCP) ||
+ (getSocket(s)->socket_values.protocol == 0))) {
+ return true;
+ }
+ else {
+ return false;
+ }
+}
int bind_udp_socket(int s, sockaddr6_t *name, int namelen, uint8_t pid)
- {
- int i;
- if (!exists_socket(s))
- {
- return -1;
- }
- for (i = 1; i < MAX_SOCKETS+1; i++)
- {
- if (isUDPSocket(i) && (getSocket(i)->socket_values.local_address.sin6_port == name->sin6_port))
- {
- return -1;
- }
- }
- memcpy(&getSocket(s)->socket_values.local_address, name, namelen);
- getSocket(s)->recv_pid = pid;
- return 1;
- }
+{
+ int i;
+
+ if(!exists_socket(s)) {
+ return -1;
+ }
+
+ for(i = 1; i < MAX_SOCKETS + 1; i++) {
+ if(isUDPSocket(i) &&
+ (getSocket(i)->socket_values.local_address.sin6_port == name->sin6_port)) {
+ return -1;
+ }
+ }
+
+ memcpy(&getSocket(s)->socket_values.local_address, name, namelen);
+ getSocket(s)->recv_pid = pid;
+ return 1;
+}
int bind_tcp_socket(int s, sockaddr6_t *name, int namelen, uint8_t pid)
- {
- int i;
- if (!exists_socket(s))
- {
- return -1;
- }
- for (i = 1; i < MAX_SOCKETS+1; i++)
- {
- if (isTCPSocket(i) && (getSocket(i)->socket_values.local_address.sin6_port == name->sin6_port))
- {
- return -1;
- }
- }
- memcpy(&getSocket(s)->socket_values.local_address, name, namelen);
- getSocket(s)->recv_pid = pid;
- getSocket(s)->socket_values.tcp_control.rto = TCP_INITIAL_ACK_TIMEOUT;
- return 1;
- }
+{
+ int i;
+
+ if(!exists_socket(s)) {
+ return -1;
+ }
+
+ for(i = 1; i < MAX_SOCKETS + 1; i++) {
+ if(isTCPSocket(i) &&
+ (getSocket(i)->socket_values.local_address.sin6_port == name->sin6_port)) {
+ return -1;
+ }
+ }
+
+ memcpy(&getSocket(s)->socket_values.local_address, name, namelen);
+ getSocket(s)->recv_pid = pid;
+ getSocket(s)->socket_values.tcp_control.rto = TCP_INITIAL_ACK_TIMEOUT;
+ return 1;
+}
int socket(int domain, int type, int protocol)
- {
- int i = 1;
- while (getSocket(i) != NULL)
- {
- i++;
- }
- if (i > MAX_SOCKETS+1)
- {
- return -1;
- }
- else
- {
- socket_t *current_socket = &sockets[i-1].socket_values;
- sockets[i-1].socket_id = i;
- current_socket->domain = domain;
- current_socket->type = type;
- current_socket->protocol = protocol;
- current_socket->tcp_control.state = CLOSED;
- return sockets[i-1].socket_id;
- }
- }
+{
+ int i = 1;
+
+ while(getSocket(i) != NULL) {
+ i++;
+ }
+
+ if(i > MAX_SOCKETS + 1) {
+ return -1;
+ }
+ else {
+ socket_t *current_socket = &sockets[i - 1].socket_values;
+ sockets[i - 1].socket_id = i;
+ current_socket->domain = domain;
+ current_socket->type = type;
+ current_socket->protocol = protocol;
+ current_socket->tcp_control.state = CLOSED;
+ return sockets[i - 1].socket_id;
+ }
+}
socket_internal_t *get_udp_socket(ipv6_hdr_t *ipv6_header, udp_hdr_t *udp_header)
- {
- uint8_t i = 1;
- while (i < MAX_SOCKETS+1)
- {
- if ( isUDPSocket(i) &&
- (getSocket(i)->socket_values.local_address.sin6_port == udp_header->dst_port))
- {
- return getSocket(i);
- }
- i++;
- }
- return NULL;
- }
-
-bool is_four_touple (socket_internal_t *current_socket, ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header)
- {
- return ((ipv6_get_addr_match(¤t_socket->socket_values.local_address.sin6_addr, &ipv6_header->destaddr) == 128) &&
- (current_socket->socket_values.local_address.sin6_port == tcp_header->dst_port) &&
- (ipv6_get_addr_match(¤t_socket->socket_values.foreign_address.sin6_addr, &ipv6_header->srcaddr) == 128) &&
- (current_socket->socket_values.foreign_address.sin6_port == tcp_header->src_port));
- }
+{
+ uint8_t i = 1;
+
+ while(i < MAX_SOCKETS + 1) {
+ if(isUDPSocket(i) &&
+ (getSocket(i)->socket_values.local_address.sin6_port ==
+ udp_header->dst_port)) {
+ return getSocket(i);
+ }
+
+ i++;
+ }
+
+ return NULL;
+}
+
+bool is_four_touple(socket_internal_t *current_socket, ipv6_hdr_t *ipv6_header,
+ tcp_hdr_t *tcp_header)
+{
+ return ((ipv6_get_addr_match(¤t_socket->socket_values.local_address.sin6_addr
+ &ipv6_header->destaddr) == 128) &&
+ (current_socket->socket_values.local_address.sin6_port == tcp_header->dst_port) &&
+ (ipv6_get_addr_match(¤t_socket->socket_values.foreign_address.sin6_addr,
+ &ipv6_header->srcaddr) == 128) &&
+ (current_socket->socket_values.foreign_address.sin6_port == tcp_header->src_port));
+}
socket_internal_t *get_tcp_socket(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header)
- {
- uint8_t i = 1;
- socket_internal_t *current_socket = NULL;
- socket_internal_t *listening_socket = NULL;
- uint8_t compare[16];
- memset(compare, 0, 16);
-
- while (i < MAX_SOCKETS+1)
- {
- current_socket = getSocket(i);
- // Check for matching 4 touple, ESTABLISHED connection
- if( isTCPSocket(i) && is_four_touple(current_socket, ipv6_header, tcp_header))
- {
- return current_socket;
- }
- // Sockets in LISTEN and SYN_RCVD state should only be tested on local TCP values
- else if ( isTCPSocket(i) &&
- ((current_socket->socket_values.tcp_control.state == LISTEN) || (current_socket->socket_values.tcp_control.state == SYN_RCVD)) &&
- (current_socket->socket_values.local_address.sin6_addr.uint8[15] == ipv6_header->destaddr.uint8[15]) &&
- (current_socket->socket_values.local_address.sin6_port == tcp_header->dst_port) &&
- (current_socket->socket_values.foreign_address.sin6_addr.uint8[15] == 0x00) &&
- (current_socket->socket_values.foreign_address.sin6_port == 0))
- {
- listening_socket = current_socket;
- }
- i++;
- }
- // Return either NULL if nothing was matched or the listening 2 touple socket
- return listening_socket;
- }
+{
+ uint8_t i = 1;
+ socket_internal_t *current_socket = NULL;
+ socket_internal_t *listening_socket = NULL;
+ uint8_t compare[16];
+ memset(compare, 0, 16);
+
+ while(i < MAX_SOCKETS + 1) {
+ current_socket = getSocket(i);
+
+ /* Check for matching 4 touple, ESTABLISHED connection */
+ if(isTCPSocket(i) && is_four_touple(current_socket, ipv6_header,
+ tcp_header)) {
+ return current_socket;
+ }
+ /* Sockets in LISTEN and SYN_RCVD state should only be tested on local TCP values */
+ else if(isTCPSocket(i) &&
+ ((current_socket->socket_values.tcp_control.state == LISTEN) ||
+ (current_socket->socket_values.tcp_control.state == SYN_RCVD)) &&
+ (current_socket->socket_values.local_address.sin6_addr.uint8[15] ==
+ ipv6_header->destaddr.uint8[15]) &&
+ (current_socket->socket_values.local_address.sin6_port ==
+ tcp_header->dst_port) &&
+ (current_socket->socket_values.foreign_address.sin6_addr.uint8[15] ==
+ 0x00) &&
+ (current_socket->socket_values.foreign_address.sin6_port == 0)) {
+ listening_socket = current_socket;
+ }
+
+ i++;
+ }
+
+ /* Return either NULL if nothing was matched or the listening 2 touple socket */
+ return listening_socket;
+}
uint16_t get_free_source_port(uint8_t protocol)
- {
- int i;
- uint16_t biggest_port = EPHEMERAL_PORTS-1;
- // Remember biggest ephemeral port number used so far and add 1
- for (i = 0; i < MAX_SOCKETS; i++)
- {
- if ((sockets[i].socket_values.protocol == protocol) && (sockets[i].socket_values.local_address.sin6_port > biggest_port))
- {
- biggest_port = sockets[i].socket_values.local_address.sin6_port;
- }
- }
- return biggest_port + 1;
- }
-
-void set_socket_address(sockaddr6_t *sockaddr, uint8_t sin6_family, uint16_t sin6_port, uint32_t sin6_flowinfo, ipv6_addr_t *sin6_addr)
- {
- sockaddr->sin6_family = sin6_family;
- sockaddr->sin6_port = sin6_port;
- sockaddr->sin6_flowinfo = sin6_flowinfo;
- memcpy(&sockaddr->sin6_addr, sin6_addr, 16);
- }
-
-void set_tcp_packet(tcp_hdr_t *tcp_hdr, uint16_t src_port, uint16_t dst_port, uint32_t seq_nr, uint32_t ack_nr,
- uint8_t dataOffset_reserved, uint8_t reserved_flags, uint16_t window, uint16_t checksum, uint16_t urg_pointer)
- {
- tcp_hdr->ack_nr = ack_nr;
- tcp_hdr->checksum = checksum;
- tcp_hdr->dataOffset_reserved = dataOffset_reserved;
- tcp_hdr->dst_port = dst_port;
- tcp_hdr->reserved_flags = reserved_flags;
- tcp_hdr->seq_nr = seq_nr;
- tcp_hdr->src_port = src_port;
- tcp_hdr->urg_pointer = urg_pointer;
- tcp_hdr->window = window;
- }
-
-// Check for consistent ACK and SEQ number
+{
+ int i;
+ uint16_t biggest_port = EPHEMERAL_PORTS - 1;
+
+ /* Remember biggest ephemeral port number used so far and add 1 */
+ for(i = 0; i < MAX_SOCKETS; i++) {
+ if((sockets[i].socket_values.protocol == protocol) &&
+ (sockets[i].socket_values.local_address.sin6_port > biggest_port)) {
+ biggest_port = sockets[i].socket_values.local_address.sin6_port;
+ }
+ }
+
+ return biggest_port + 1;
+}
+
+void set_socket_address(sockaddr6_t *sockaddr, uint8_t sin6_family,
+ uint16_t sin6_port, uint32_t sin6_flowinfo, ipv6_addr_t *sin6_addr)
+{
+ sockaddr->sin6_family = sin6_family;
+ sockaddr->sin6_port = sin6_port;
+ sockaddr->sin6_flowinfo = sin6_flowinfo;
+ memcpy(&sockaddr->sin6_addr, sin6_addr, 16);
+}
+
+void set_tcp_packet(tcp_hdr_t *tcp_hdr, uint16_t src_port, uint16_t dst_port,
+ uint32_t seq_nr, uint32_t ack_nr, uint8_t dataOffset_reserved,
+ uint8_t reserved_flags, uint16_t window, uint16_t checksum,
+ uint16_t urg_pointer)
+{
+ tcp_hdr->ack_nr = ack_nr;
+ tcp_hdr->checksum = checksum;
+ tcp_hdr->dataOffset_reserved = dataOffset_reserved;
+ tcp_hdr->dst_port = dst_port;
+ tcp_hdr->reserved_flags = reserved_flags;
+ tcp_hdr->seq_nr = seq_nr;
+ tcp_hdr->src_port = src_port;
+ tcp_hdr->urg_pointer = urg_pointer;
+ tcp_hdr->window = window;
+}
+
+/* Check for consistent ACK and SEQ number */
int check_tcp_consistency(socket_t *current_tcp_socket, tcp_hdr_t *tcp_header)
- {
- if (IS_TCP_ACK(tcp_header->reserved_flags))
- {
- if(tcp_header->ack_nr > (current_tcp_socket->tcp_control.send_nxt))
- {
- // ACK of not yet sent byte, discard
- return ACK_NO_TOO_BIG;
- }
- else if (tcp_header->ack_nr <= (current_tcp_socket->tcp_control.send_una))
- {
- // ACK of previous segments, maybe dropped?
- return ACK_NO_TOO_SMALL;
- }
- }
- else if ((current_tcp_socket->tcp_control.rcv_nxt > 0) && (tcp_header->seq_nr < current_tcp_socket->tcp_control.rcv_nxt))
- {
- // segment repetition, maybe ACK got lost?
- return SEQ_NO_TOO_SMALL;
- }
- return PACKET_OK;
- }
+{
+ if(IS_TCP_ACK(tcp_header->reserved_flags)) {
+ if(tcp_header->ack_nr > (current_tcp_socket->tcp_control.send_nxt)) {
+ /* ACK of not yet sent byte, discard */
+ return ACK_NO_TOO_BIG;
+ }
+ else if(tcp_header->ack_nr <= (current_tcp_socket->tcp_control.send_una)) {
+ /* ACK of previous segments, maybe dropped? */
+ return ACK_NO_TOO_SMALL;
+ }
+ }
+ else if((current_tcp_socket->tcp_control.rcv_nxt > 0) && (tcp_header->seq_nr < current_tcp_socket->tcp_control.rcv_nxt)) {
+ /* segment repetition, maybe ACK got lost? */
+ return SEQ_NO_TOO_SMALL;
+ }
+
+ return PACKET_OK;
+}
void switch_tcp_packet_byte_order(tcp_hdr_t *current_tcp_packet)
- {
- if (current_tcp_packet->dataOffset_reserved*4 > TCP_HDR_LEN)
- {
- if (*(((uint8_t*)current_tcp_packet)+TCP_HDR_LEN) == TCP_MSS_OPTION)
- {
- uint8_t *packet_pointer = (uint8_t *)current_tcp_packet;
- packet_pointer += (TCP_HDR_LEN+2);
- uint8_t mss1 = *packet_pointer;
- uint8_t mss2 = *(packet_pointer+1);
- *packet_pointer = mss2;
- *(packet_pointer+1) = mss1;
- }
- if (*(((uint8_t*)current_tcp_packet)+TCP_HDR_LEN) == TCP_TS_OPTION)
- {
- // TODO: Timestamp option not implemented
- }
- }
-
- current_tcp_packet->seq_nr = HTONL(current_tcp_packet->seq_nr);
- current_tcp_packet->ack_nr = HTONL(current_tcp_packet->ack_nr);
- current_tcp_packet->window = HTONS(current_tcp_packet->window);
- current_tcp_packet->urg_pointer = HTONS(current_tcp_packet->urg_pointer);
- }
-
-int send_tcp(socket_internal_t *current_socket, tcp_hdr_t *current_tcp_packet, ipv6_hdr_t *temp_ipv6_header, uint8_t flags, uint8_t payload_length)
- {
- socket_t *current_tcp_socket = ¤t_socket->socket_values;
- uint8_t header_length = TCP_HDR_LEN/4;
- if (IS_TCP_SYN(flags) || IS_TCP_SYN_ACK(flags))
- {
- tcp_mss_option_t current_mss_option;
- header_length += sizeof(tcp_mss_option_t)/4;
-
- current_mss_option.kind = TCP_MSS_OPTION;
- current_mss_option.len = sizeof(tcp_mss_option_t);
- current_mss_option.mss = STATIC_MSS;
- memcpy(((uint8_t*)current_tcp_packet)+TCP_HDR_LEN, ¤t_mss_option, sizeof(tcp_mss_option_t));
- }
-
- set_tcp_packet(current_tcp_packet, current_tcp_socket->local_address.sin6_port, current_tcp_socket->foreign_address.sin6_port,
- (flags == TCP_ACK ? current_tcp_socket->tcp_control.send_una-1 : current_tcp_socket->tcp_control.send_una),
- current_tcp_socket->tcp_control.rcv_nxt, header_length, flags, current_tcp_socket->tcp_control.rcv_wnd, 0, 0);
-
- // Fill IPv6 Header
- memcpy(&(temp_ipv6_header->destaddr), ¤t_tcp_socket->foreign_address.sin6_addr, 16);
- memcpy(&(temp_ipv6_header->srcaddr), ¤t_tcp_socket->local_address.sin6_addr, 16);
- temp_ipv6_header->length = header_length*4 + payload_length;
-
- current_tcp_packet->checksum = ~tcp_csum(temp_ipv6_header, current_tcp_packet);
+{
+ if(current_tcp_packet->dataOffset_reserved * 4 > TCP_HDR_LEN) {
+ if(*(((uint8_t *)current_tcp_packet) + TCP_HDR_LEN) == TCP_MSS_OPTION) {
+ uint8_t *packet_pointer = (uint8_t *)current_tcp_packet;
+ packet_pointer += (TCP_HDR_LEN + 2);
+ uint8_t mss1 = *packet_pointer;
+ uint8_t mss2 = *(packet_pointer + 1);
+ *packet_pointer = mss2;
+ *(packet_pointer + 1) = mss1;
+ }
+
+ if(*(((uint8_t *)current_tcp_packet) + TCP_HDR_LEN) == TCP_TS_OPTION) {
+ /* TODO: Timestamp option not implemented */
+ }
+ }
+
+ current_tcp_packet->seq_nr = HTONL(current_tcp_packet->seq_nr);
+ current_tcp_packet->ack_nr = HTONL(current_tcp_packet->ack_nr);
+ current_tcp_packet->window = HTONS(current_tcp_packet->window);
+ current_tcp_packet->urg_pointer = HTONS(current_tcp_packet->urg_pointer);
+}
+
+int send_tcp(socket_internal_t *current_socket, tcp_hdr_t *current_tcp_packet,
+ ipv6_hdr_t *temp_ipv6_header, uint8_t flags, uint8_t payload_length)
+{
+ socket_t *current_tcp_socket = ¤t_socket->socket_values;
+ uint8_t header_length = TCP_HDR_LEN / 4;
+
+ if(IS_TCP_SYN(flags) || IS_TCP_SYN_ACK(flags)) {
+ tcp_mss_option_t current_mss_option;
+ header_length += sizeof(tcp_mss_option_t) / 4;
+
+ current_mss_option.kind = TCP_MSS_OPTION;
+ current_mss_option.len = sizeof(tcp_mss_option_t);
+ current_mss_option.mss = STATIC_MSS;
+ memcpy(((uint8_t *)current_tcp_packet) + TCP_HDR_LEN,
+ ¤t_mss_option, sizeof(tcp_mss_option_t));
+ }
+
+ set_tcp_packet(current_tcp_packet, current_tcp_socket->local_address.sin6_port,
+ current_tcp_socket->foreign_address.sin6_port,
+ (flags == TCP_ACK ? current_tcp_socket->tcp_control.send_una - 1 :
+ current_tcp_socket->tcp_control.send_una),
+ current_tcp_socket->tcp_control.rcv_nxt, header_length, flags,
+ current_tcp_socket->tcp_control.rcv_wnd, 0, 0);
+
+ /* Fill IPv6 Header */
+ memcpy(&(temp_ipv6_header->destaddr),
+ ¤t_tcp_socket->foreign_address.sin6_addr, 16);
+ memcpy(&(temp_ipv6_header->srcaddr),
+ ¤t_tcp_socket->local_address.sin6_addr, 16);
+ temp_ipv6_header->length = header_length * 4 + payload_length;
+
+ current_tcp_packet->checksum = ~tcp_csum(temp_ipv6_header, current_tcp_packet);
#ifdef TCP_HC
- uint16_t compressed_size;
-
- compressed_size = compress_tcp_packet(current_socket, (uint8_t *) current_tcp_packet, temp_ipv6_header, flags, payload_length);
-
- if (compressed_size == 0)
- {
- // Error in compressing tcp packet header
- return -1;
- }
- sixlowpan_send(¤t_tcp_socket->foreign_address.sin6_addr, (uint8_t*)(current_tcp_packet), compressed_size, IPPROTO_TCP);
- return 1;
+ uint16_t compressed_size;
+
+ compressed_size = compress_tcp_packet(current_socket,
+ (uint8_t *)current_tcp_packet,
+ temp_ipv6_header, flags,
+ payload_length);
+
+ if(compressed_size == 0) {
+ /* Error in compressing tcp packet header */
+ return -1;
+ }
+
+ sixlowpan_send(¤t_tcp_socket->foreign_address.sin6_addr,
+ (uint8_t *)(current_tcp_packet), compressed_size,
+ IPPROTO_TCP);
+ return 1;
#else
-// print_tcp_status(OUT_PACKET, temp_ipv6_header, current_tcp_packet, current_tcp_socket);
- switch_tcp_packet_byte_order(current_tcp_packet);
- sixlowpan_send(¤t_tcp_socket->foreign_address.sin6_addr, (uint8_t*)(current_tcp_packet), header_length*4+payload_length, IPPROTO_TCP);
- return 1;
+ switch_tcp_packet_byte_order(current_tcp_packet);
+ sixlowpan_send(¤t_tcp_socket->foreign_address.sin6_addr,
+ (uint8_t *)(current_tcp_packet),
+ header_length * 4 + payload_length, IPPROTO_TCP);
+ return 1;
#endif
- }
-
-void set_tcp_cb(tcp_cb_t *tcp_control, uint32_t rcv_nxt, uint16_t rcv_wnd, uint32_t send_nxt, uint32_t send_una, uint16_t send_wnd)
- {
- tcp_control->rcv_nxt = rcv_nxt;
- tcp_control->rcv_wnd = rcv_wnd;
- tcp_control->send_nxt = send_nxt;
- tcp_control->send_una = send_una;
- tcp_control->send_wnd = send_wnd;
- }
+}
+
+void set_tcp_cb(tcp_cb_t *tcp_control, uint32_t rcv_nxt, uint16_t rcv_wnd,
+ uint32_t send_nxt, uint32_t send_una, uint16_t send_wnd)
+{
+ tcp_control->rcv_nxt = rcv_nxt;
+ tcp_control->rcv_wnd = rcv_wnd;
+ tcp_control->send_nxt = send_nxt;
+ tcp_control->send_una = send_una;
+ tcp_control->send_wnd = send_wnd;
+}
int connect(int socket, sockaddr6_t *addr, uint32_t addrlen)
- {
- // Variables
- ipv6_addr_t src_addr;
- socket_internal_t *current_int_tcp_socket;
- socket_t *current_tcp_socket;
- msg_t msg_from_server;
- uint8_t send_buffer[BUFFER_SIZE];
- ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t*)(&send_buffer));
- tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t*)(&send_buffer[IPV6_HDR_LEN]));
-
- // Check if socket exists
- current_int_tcp_socket = getSocket(socket);
- if (current_int_tcp_socket == NULL)
- {
- return -1;
- }
-
- current_tcp_socket = ¤t_int_tcp_socket->socket_values;
-
- current_int_tcp_socket->recv_pid = thread_getpid();
-
- // Local address information
- ipv6_get_saddr(&src_addr, &addr->sin6_addr);
- set_socket_address(¤t_tcp_socket->local_address, PF_INET6, HTONS(get_free_source_port(IPPROTO_TCP)), 0, &src_addr);
-
- // Foreign address information
- set_socket_address(¤t_tcp_socket->foreign_address, addr->sin6_family, addr->sin6_port, addr->sin6_flowinfo, &addr->sin6_addr);
-
- // Fill lcoal TCP socket information
- srand(addr->sin6_port);
-
- current_tcp_socket->tcp_control.rcv_irs = 0;
- mutex_lock(&global_sequence_clunter_mutex);
- current_tcp_socket->tcp_control.send_iss = global_sequence_counter;
- mutex_unlock(&global_sequence_clunter_mutex, 0);
- current_tcp_socket->tcp_control.state = SYN_SENT;
+{
+ /* Variables */
+ ipv6_addr_t src_addr;
+ socket_internal_t *current_int_tcp_socket;
+ socket_t *current_tcp_socket;
+ msg_t msg_from_server;
+ uint8_t send_buffer[BUFFER_SIZE];
+ ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t *)(&send_buffer));
+ tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t *)(&send_buffer[IPV6_HDR_LEN]));
+
+ /* Check if socket exists */
+ current_int_tcp_socket = getSocket(socket);
+
+ if(current_int_tcp_socket == NULL) {
+ return -1;
+ }
+
+ current_tcp_socket = ¤t_int_tcp_socket->socket_values;
+
+ current_int_tcp_socket->recv_pid = thread_getpid();
+
+ /* Local address information */
+ ipv6_get_saddr(&src_addr, &addr->sin6_addr);
+ set_socket_address(¤t_tcp_socket->local_address, PF_INET6,
+ HTONS(get_free_source_port(IPPROTO_TCP)), 0, &src_addr);
+
+ /* Foreign address information */
+ set_socket_address(¤t_tcp_socket->foreign_address, addr->sin6_family,
+ addr->sin6_port, addr->sin6_flowinfo, &addr->sin6_addr);
+
+ /* Fill lcoal TCP socket information */
+ srand(addr->sin6_port);
+
+ current_tcp_socket->tcp_control.rcv_irs = 0;
+ mutex_lock(&global_sequence_clunter_mutex);
+ current_tcp_socket->tcp_control.send_is = global_sequence_counter;
+ mutex_unlock(&global_sequence_clunter_mutex, 0);
+ current_tcp_socket->tcp_control.state = SYN_SENT;
#ifdef TCP_HC
- // Choosing random number Context ID
- mutex_lock(&global_context_counter_mutex);
- current_tcp_socket->tcp_control.tcp_context.context_id = global_context_counter;
- mutex_unlock(&global_context_counter_mutex, 0);
+ /* Choosing random number Context ID */
+ mutex_lock(&global_context_counter_mutex);
+ current_tcp_socket->tcp_control.tcp_context.context_id = global_context_counter;
+ mutex_unlock(&global_context_counter_mutex, 0);
- current_tcp_socket->tcp_control.tcp_context.hc_type = FULL_HEADER;
+ current_tcp_socket->tcp_control.tcp_context.hc_type = FULL_HEADER;
- // Remember TCP Context for possible TCP_RETRY
- tcp_hc_context_t saved_tcp_context;
- memcpy(&saved_tcp_context, ¤t_tcp_socket->tcp_control.tcp_context, sizeof(tcp_hc_context_t));
+ /* Remember TCP Context for possible TCP_RETRY */
+ tcp_hc_context_t saved_tcp_context;
+ memcpy(&saved_tcp_context, ¤t_tcp_socket->tcp_control.tcp_context,
+ sizeof(tcp_hc_context_t));
#endif
- set_tcp_cb(¤t_tcp_socket->tcp_control, 0, STATIC_WINDOW, current_tcp_socket->tcp_control.send_iss, current_tcp_socket->tcp_control.send_iss, 0);
+ set_tcp_cb(¤t_tcp_socket->tcp_control, 0, STATIC_WINDOW,
+ current_tcp_socket->tcp_control.send_iss,
+ current_tcp_socket->tcp_control.send_iss, 0);
+
+ /* Remember current time */
+ timex_t now;
+ vtimer_now(&now);
+ current_tcp_socket->tcp_control.last_packet_time = now;
+ current_tcp_socket->tcp_control.no_of_retries = 0;
- // Remember current time
- timex_t now;
- vtimer_now(&now);
- current_tcp_socket->tcp_control.last_packet_time = now;
- current_tcp_socket->tcp_control.no_of_retries = 0;
+ msg_from_server.type = TCP_RETRY;
- msg_from_server.type = TCP_RETRY;
+ while(msg_from_server.type == TCP_RETRY) {
+ /* Send packet */
+ send_tcp(current_int_tcp_socket, current_tcp_packet, temp_ipv6_header,
+ TCP_SYN, 0);
- while (msg_from_server.type == TCP_RETRY)
- {
- // Send packet
- send_tcp(current_int_tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_SYN, 0);
+ /* wait for SYN ACK or RETRY */
+ msg_receive(&msg_from_server);
- // wait for SYN ACK or RETRY
- msg_receive(&msg_from_server);
- if (msg_from_server.type == TCP_TIMEOUT)
- {
+ if(msg_from_server.type == TCP_TIMEOUT) {
#ifdef TCP_HC
- // We did not send anything successful so restore last context
- memcpy(¤t_tcp_socket->tcp_control.tcp_context, &saved_tcp_context, sizeof(tcp_hc_context_t));
+ /* We did not send anything successful so restore last context */
+ memcpy(¤t_tcp_socket->tcp_control.tcp_context,
+ &saved_tcp_context, sizeof(tcp_hc_context_t));
#endif
- return -1;
- }
+ return -1;
+ }
+
#ifdef TCP_HC
- else if (msg_from_server.type == TCP_RETRY)
- {
- // We retry sending a packet so set everything to last values again
- memcpy(¤t_tcp_socket->tcp_control.tcp_context, &saved_tcp_context, sizeof(tcp_hc_context_t));
- }
+ else if(msg_from_server.type == TCP_RETRY) {
+ /* We retry sending a packet so set everything to last values again */
+ memcpy(¤t_tcp_socket->tcp_control.tcp_context,
+ &saved_tcp_context, sizeof(tcp_hc_context_t));
+ }
+
#endif
- }
-
- // Read packet content
- tcp_hdr_t *tcp_header = ((tcp_hdr_t*)(msg_from_server.content.ptr));
-
- // Check for consistency
- if (tcp_header->ack_nr != current_tcp_socket->tcp_control.send_nxt+1)
- {
- printf("TCP packets not consistent!\n");
- }
-
- // Got SYN ACK from Server
- // Refresh foreign TCP socket information
- if ((tcp_header->dataOffset_reserved*4 > TCP_HDR_LEN) && (*(((uint8_t*)tcp_header)+TCP_HDR_LEN) == TCP_MSS_OPTION))
- {
- current_tcp_socket->tcp_control.mss = *((uint16_t*)(((uint8_t*)tcp_header)+TCP_HDR_LEN+2));
- }
- else
- {
- current_tcp_socket->tcp_control.mss = STATIC_MSS;
- }
- current_tcp_socket->tcp_control.rcv_irs = tcp_header->seq_nr;
- set_tcp_cb(¤t_tcp_socket->tcp_control, tcp_header->seq_nr+1, current_tcp_socket->tcp_control.rcv_wnd,
- current_tcp_socket->tcp_control.send_una, current_tcp_socket->tcp_control.send_una, tcp_header->window);
- current_tcp_socket->tcp_control.send_una++;
- current_tcp_socket->tcp_control.send_nxt++;
-
- msg_from_server.type = UNDEFINED;
-
- // Remember current time
- vtimer_now(&now);
- current_tcp_socket->tcp_control.last_packet_time = now;
- current_tcp_socket->tcp_control.no_of_retries = 0;
+ }
+
+ /* Read packet content */
+ tcp_hdr_t *tcp_header = ((tcp_hdr_t *)(msg_from_server.content.ptr));
+
+ /* Check for consistency */
+ if(tcp_header->ack_nr != current_tcp_socket->tcp_control.send_nxt + 1) {
+ printf("TCP packets not consistent!\n");
+ }
+
+ /* Got SYN ACK from Server */
+ /* Refresh foreign TCP socket information */
+ if((tcp_header->dataOffset_reserved * 4 > TCP_HDR_LEN) &&
+ (*(((uint8_t *)tcp_header) + TCP_HDR_LEN) == TCP_MSS_OPTION)) {
+ current_tcp_socket->tcp_control.mss =
+ *((uint16_t *)(((uint8_t *)tcp_header) + TCP_HDR_LEN + 2));
+ }
+ else {
+ current_tcp_socket->tcp_control.mss = STATIC_MSS;
+ }
+
+ current_tcp_socket->tcp_control.rcv_irs = tcp_header->seq_nr;
+ set_tcp_cb(¤t_tcp_socket->tcp_control, tcp_header->seq_nr + 1,
+ current_tcp_socket->tcp_control.rcv_wnd,
+ current_tcp_socket->tcp_control.send_una,
+ current_tcp_socket->tcp_control.send_una,
+ tcp_header->window);
+ current_tcp_socket->tcp_control.send_una++;
+ current_tcp_socket->tcp_control.send_nxt++;
+
+ msg_from_server.type = UNDEFINED;
+
+ /* Remember current time */
+ vtimer_now(&now);
+ current_tcp_socket->tcp_control.last_packet_time = now;
+ current_tcp_socket->tcp_control.no_of_retries = 0;
#ifdef TCP_HC
- current_tcp_socket->tcp_control.tcp_context.hc_type = FULL_HEADER;
- // Remember TCP Context for possible TCP_RETRY
- memcpy(&saved_tcp_context, ¤t_tcp_socket->tcp_control.tcp_context, sizeof(tcp_hc_context_t));
+ current_tcp_socket->tcp_control.tcp_context.hc_type = FULL_HEADER;
+ /* Remember TCP Context for possible TCP_RETRY */
+ memcpy(&saved_tcp_context, ¤t_tcp_socket->tcp_control.tcp_context,
+ sizeof(tcp_hc_context_t));
#endif
- while (msg_from_server.type != TCP_RETRY)
- {
- // Send packet
- send_tcp(current_int_tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_ACK, 0);
+ while(msg_from_server.type != TCP_RETRY) {
+ /* Send packet */
+ send_tcp(current_int_tcp_socket, current_tcp_packet, temp_ipv6_header,
+ TCP_ACK, 0);
- msg_receive(&msg_from_server);
+ msg_receive(&msg_from_server);
#ifdef TCP_HC
- if (msg_from_server.type == TCP_SYN_ACK)
- {
- // TCP_SYN_ACK from server arrived again, copy old context and send TCP_ACK again
- memcpy(¤t_tcp_socket->tcp_control.tcp_context, &saved_tcp_context, sizeof(tcp_hc_context_t));
- }
- else if (msg_from_server.type == TCP_RETRY)
- {
- // We waited for RTT, no TCP_SYN_ACK received, so we assume the TCP_ACK packet arrived safely
- }
+
+ if(msg_from_server.type == TCP_SYN_ACK) {
+ /* TCP_SYN_ACK from server arrived again, copy old context and
+ * send TCP_ACK again */
+ memcpy(¤t_tcp_socket->tcp_control.tcp_context,
+ &saved_tcp_context, sizeof(tcp_hc_context_t));
+ }
+ else if(msg_from_server.type == TCP_RETRY) {
+ /* We waited for RTT, no TCP_SYN_ACK received, so we assume the
+ * TCP_ACK packet arrived safely */
+ }
+
#endif
- }
+ }
- current_tcp_socket->tcp_control.state = ESTABLISHED;
+ current_tcp_socket->tcp_control.state = ESTABLISHED;
- current_int_tcp_socket->recv_pid = 255;
+ current_int_tcp_socket->recv_pid = 255;
- print_sockets();
- return 0;
- }
+ print_sockets();
+ return 0;
+}
void calculate_rto(tcp_cb_t *tcp_control, long current_time)
- {
- double rtt = current_time - tcp_control->last_packet_time.microseconds;
- double srtt = tcp_control->srtt;
- double rttvar = tcp_control->rttvar;
- double rto = tcp_control->rto;
-
- if ((srtt == 0) && (rttvar == 0) && (rto == TCP_INITIAL_ACK_TIMEOUT))
- {
- // First calculation
- srtt = rtt;
- rttvar = 0.5*rtt;
- rto = rtt + (((4*rttvar) < TCP_TIMER_RESOLUTION) ? (TCP_TIMER_RESOLUTION) : (4*rttvar));
- }
- else
- {
- // every other calculation
- srtt = (1-TCP_ALPHA)*srtt+TCP_ALPHA*rtt;
- rttvar = (1-TCP_BETA)*rttvar+TCP_BETA*abs(srtt-rtt);
- rto = srtt + (((4*rttvar) < TCP_TIMER_RESOLUTION) ? (TCP_TIMER_RESOLUTION) : (4*rttvar));
- }
- if (rto < SECOND)
- {
- rto = SECOND;
- }
- tcp_control->srtt = srtt;
- tcp_control->rttvar = rttvar;
- tcp_control->rto = rto;
- }
+{
+ double rtt = current_time - tcp_control->last_packet_time.microseconds;
+ double srtt = tcp_control->srtt;
+ double rttvar = tcp_control->rttvar;
+ double rto = tcp_control->rto;
+
+ if((srtt == 0) && (rttvar == 0) && (rto == TCP_INITIAL_ACK_TIMEOUT)) {
+ /* First calculation */
+ srtt = rtt;
+ rttvar = 0.5 * rtt;
+ rto = rtt + (((4 * rttvar) < TCP_TIMER_RESOLUTION) ?
+ (TCP_TIMER_RESOLUTION) : (4 * rttvar));
+ }
+ else {
+ /* every other calculation */
+ srtt = (1 - TCP_ALPHA) * srtt + TCP_ALPHA * rtt;
+ rttvar = (1 - TCP_BETA) * rttvar + TCP_BETA * abs(srtt - rtt);
+ rto = srtt + (((4 * rttvar) < TCP_TIMER_RESOLUTION) ?
+ (TCP_TIMER_RESOLUTION) : (4 * rttvar));
+ }
+
+ if(rto < SECOND) {
+ rto = SECOND;
+ }
+
+ tcp_control->srtt = srtt;
+ tcp_control->rttvar = rttvar;
+ tcp_control->rto = rto;
+}
int32_t send(int s, void *msg, uint32_t len, int flags)
- {
- // Variables
- msg_t recv_msg;
- int32_t sent_bytes = 0, total_sent_bytes = 0;
- socket_internal_t *current_int_tcp_socket;
- socket_t *current_tcp_socket;
- uint8_t send_buffer[BUFFER_SIZE];
- memset(send_buffer, 0, BUFFER_SIZE);
- ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t*)(&send_buffer));
- tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t*)(&send_buffer[IPV6_HDR_LEN]));
-
-
- // Check if socket exists and is TCP socket
- if (!isTCPSocket(s))
- {
- return -1;
- }
-
- current_int_tcp_socket = getSocket(s);
- current_tcp_socket = ¤t_int_tcp_socket->socket_values;
-
- // Check for ESTABLISHED STATE
- if (current_tcp_socket->tcp_control.state != ESTABLISHED)
- {
- return -1;
- }
-
- // Add thread PID
- current_int_tcp_socket->send_pid = thread_getpid();
-
- recv_msg.type = UNDEFINED;
-
- while (1)
- {
- current_tcp_socket->tcp_control.no_of_retries = 0;
+{
+ /* Variables */
+ msg_t recv_msg;
+ int32_t sent_bytes = 0, total_sent_bytes = 0;
+ socket_internal_t *current_int_tcp_socket;
+ socket_t *current_tcp_socket;
+ uint8_t send_buffer[BUFFER_SIZE];
+ memset(send_buffer, 0, BUFFER_SIZE);
+ ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t *)(&send_buffer));
+ tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t *)(&send_buffer[IPV6_HDR_LEN]));
+
+ /* Check if socket exists and is TCP socket */
+ if(!isTCPSocket(s)) {
+ return -1;
+ }
+
+ current_int_tcp_socket = getSocket(s);
+ current_tcp_socket = ¤t_int_tcp_socket->socket_values;
+
+ /* Check for ESTABLISHED STATE */
+ if(current_tcp_socket->tcp_control.state != ESTABLISHED) {
+ return -1;
+ }
+
+ /* Add thread PID */
+ current_int_tcp_socket->send_pid = thread_getpid();
+
+ recv_msg.type = UNDEFINED;
+
+ while(1) {
+ current_tcp_socket->tcp_control.no_of_retries = 0;
#ifdef TCP_HC
- current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
- // Remember TCP Context for possible TCP_RETRY
- tcp_hc_context_t saved_tcp_context;
- memcpy(&saved_tcp_context, ¤t_tcp_socket->tcp_control.tcp_context, sizeof(tcp_hc_context_t)-1);
+ current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
+ /* Remember TCP Context for possible TCP_RETRY */
+ tcp_hc_context_t saved_tcp_context;
+ memcpy(&saved_tcp_context, ¤t_tcp_socket->tcp_control.tcp_context,
+ sizeof(tcp_hc_context_t) - 1);
#endif
- while (recv_msg.type != TCP_ACK)
- {
- // Add packet data
- if (current_tcp_socket->tcp_control.send_wnd > current_tcp_socket->tcp_control.mss)
- {
- // Window size > Maximum Segment Size
- if ((len-total_sent_bytes) > current_tcp_socket->tcp_control.mss)
- {
- memcpy(&send_buffer[IPV6_HDR_LEN+TCP_HDR_LEN], msg, current_tcp_socket->tcp_control.mss);
- sent_bytes = current_tcp_socket->tcp_control.mss;
- total_sent_bytes += sent_bytes;
- }
- else
- {
- memcpy(&send_buffer[IPV6_HDR_LEN+TCP_HDR_LEN], msg+total_sent_bytes, len-total_sent_bytes);
- sent_bytes = len-total_sent_bytes;
- total_sent_bytes = len;
- }
- }
- else
- {
- // Window size <= Maximum Segment Size
- if ((len-total_sent_bytes) > current_tcp_socket->tcp_control.send_wnd)
- {
- memcpy(&send_buffer[IPV6_HDR_LEN+TCP_HDR_LEN], msg, current_tcp_socket->tcp_control.send_wnd);
- sent_bytes = current_tcp_socket->tcp_control.send_wnd;
- total_sent_bytes += sent_bytes;
- }
- else
- {
- memcpy(&send_buffer[IPV6_HDR_LEN+TCP_HDR_LEN], msg+total_sent_bytes, len-total_sent_bytes);
- sent_bytes = len-total_sent_bytes;
- total_sent_bytes = len;
- }
- }
-
- current_tcp_socket->tcp_control.send_nxt += sent_bytes;
- current_tcp_socket->tcp_control.send_wnd -= sent_bytes;
-
- if (send_tcp(current_int_tcp_socket, current_tcp_packet, temp_ipv6_header, 0, sent_bytes) != 1)
- {
- // Error while sending tcp data
- current_tcp_socket->tcp_control.send_nxt -= sent_bytes;
- current_tcp_socket->tcp_control.send_wnd += sent_bytes;
+ while(recv_msg.type != TCP_ACK) {
+ /* Add packet data */
+ if(current_tcp_socket->tcp_control.send_wnd >
+ current_tcp_socket->tcp_control.mss) {
+ /* Window size > Maximum Segment Size */
+ if((len - total_sent_bytes) > current_tcp_socket->tcp_control.mss) {
+ memcpy(&send_buffer[IPV6_HDR_LEN + TCP_HDR_LEN], msg,
+ current_tcp_socket->tcp_control.mss);
+ sent_bytes = current_tcp_socket->tcp_control.mss;
+ total_sent_bytes += sent_bytes;
+ }
+ else {
+ memcpy(&send_buffer[IPV6_HDR_LEN + TCP_HDR_LEN],
+ msg + total_sent_bytes, len - total_sent_bytes);
+ sent_bytes = len - total_sent_bytes;
+ total_sent_bytes = len;
+ }
+ }
+ else {
+ /* Window size <= Maximum Segment Size */
+ if((len - total_sent_bytes) > current_tcp_socket->tcp_control.send_wnd) {
+ memcpy(&send_buffer[IPV6_HDR_LEN + TCP_HDR_LEN], msg,
+ current_tcp_socket->tcp_control.send_wnd);
+ sent_bytes = current_tcp_socket->tcp_control.send_wnd;
+ total_sent_bytes += sent_bytes;
+ }
+ else {
+ memcpy(&send_buffer[IPV6_HDR_LEN + TCP_HDR_LEN],
+ msg + total_sent_bytes, len - total_sent_bytes);
+ sent_bytes = len - total_sent_bytes;
+ total_sent_bytes = len;
+ }
+ }
+
+ current_tcp_socket->tcp_control.send_nxt += sent_bytes;
+ current_tcp_socket->tcp_control.send_wnd -= sent_bytes;
+
+ if(send_tcp(current_int_tcp_socket, current_tcp_packet,
+ temp_ipv6_header, 0, sent_bytes) != 1) {
+ /* Error while sending tcp data */
+ current_tcp_socket->tcp_control.send_nxt -= sent_bytes;
+ current_tcp_socket->tcp_control.send_wnd += sent_bytes;
#ifdef TCP_HC
- memcpy(¤t_tcp_socket->tcp_control.tcp_context, &saved_tcp_context, sizeof(tcp_hc_context_t));
- current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
+ memcpy(¤t_tcp_socket->tcp_control.tcp_context,
+ &saved_tcp_context, sizeof(tcp_hc_context_t));
+ current_tcp_socket->tcp_control.tcp_context.hc_type =
+ COMPRESSED_HEADER;
#endif
- printf("Error while sending, returning to application thread!\n");
- return -1;
- }
-
- // Remember current time
- current_tcp_socket->tcp_control.last_packet_time.microseconds = hwtimer_now();
- net_msg_receive(&recv_msg);
- switch (recv_msg.type)
- {
- case TCP_ACK:
- {
- if (current_tcp_socket->tcp_control.no_of_retries == 0)
- {
- calculate_rto(¤t_tcp_socket->tcp_control, hwtimer_now());
- }
- tcp_hdr_t *tcp_header = ((tcp_hdr_t*)(recv_msg.content.ptr));
- if ((current_tcp_socket->tcp_control.send_nxt == tcp_header->ack_nr) && (total_sent_bytes == len))
- {
- current_tcp_socket->tcp_control.send_una = tcp_header->ack_nr;
- current_tcp_socket->tcp_control.send_nxt = tcp_header->ack_nr;
- current_tcp_socket->tcp_control.send_wnd = tcp_header->window;
- // Got ACK for every sent byte
+ printf("Error while sending, returning to application thread!\n");
+ return -1;
+ }
+
+ /* Remember current time */
+ current_tcp_socket->tcp_control.last_packet_time.microseconds =
+ hwtimer_now();
+ net_msg_receive(&recv_msg);
+
+ switch(recv_msg.type) {
+ case TCP_ACK: {
+ if(current_tcp_socket->tcp_control.no_of_retries == 0) {
+ calculate_rto(¤t_tcp_socket->tcp_control,
+ hwtimer_now());
+ }
+
+ tcp_hdr_t *tcp_header = ((tcp_hdr_t *)(recv_msg.content.ptr));
+
+ if((current_tcp_socket->tcp_control.send_nxt ==
+ tcp_header->ack_nr) && (total_sent_bytes == len)) {
+ current_tcp_socket->tcp_control.send_una = tcp_header->ack_nr;
+ current_tcp_socket->tcp_control.send_nxt = tcp_header->ack_nr;
+ current_tcp_socket->tcp_control.send_wnd = tcp_header->window;
+ /* Got ACK for every sent byte */
#ifdef TCP_HC
- current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
+ current_tcp_socket->tcp_control.tcp_context.hc_type =
+ COMPRESSED_HEADER;
#endif
- return sent_bytes;
- }
- else if ((current_tcp_socket->tcp_control.send_nxt == tcp_header->ack_nr) && (total_sent_bytes != len))
- {
- current_tcp_socket->tcp_control.send_una = tcp_header->ack_nr;
- current_tcp_socket->tcp_control.send_nxt = tcp_header->ack_nr;
- current_tcp_socket->tcp_control.send_wnd = tcp_header->window;
- // Got ACK for every sent byte
+ return sent_bytes;
+ }
+ else if((current_tcp_socket->tcp_control.send_nxt ==
+ tcp_header->ack_nr) && (total_sent_bytes != len)) {
+ current_tcp_socket->tcp_control.send_una = tcp_header->ack_nr;
+ current_tcp_socket->tcp_control.send_nxt = tcp_header->ack_nr;
+ current_tcp_socket->tcp_control.send_wnd = tcp_header->window;
+ /* Got ACK for every sent byte */
#ifdef TCP_HC
- current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
+ current_tcp_socket->tcp_control.tcp_context.hc_type =
+ COMPRESSED_HEADER;
#endif
- break;
- }
-// else
-// {
-// // TODO: If window size > MSS, ACK was valid only for a few segments, handle retransmit of missing segments
-// break;
-// }
- break;
- }
- case TCP_RETRY:
- {
- current_tcp_socket->tcp_control.send_nxt -= sent_bytes;
- current_tcp_socket->tcp_control.send_wnd += sent_bytes;
- total_sent_bytes -= sent_bytes;
+ break;
+ }
+
+ /* else {
+ * TODO: If window size > MSS, ACK was valid only for
+ * a few segments, handle retransmit of missing
+ * segments
+ * break;
+ * } */
+ break;
+ }
+
+ case TCP_RETRY: {
+ current_tcp_socket->tcp_control.send_nxt -= sent_bytes;
+ current_tcp_socket->tcp_control.send_wnd += sent_bytes;
+ total_sent_bytes -= sent_bytes;
#ifdef TCP_HC
- memcpy(¤t_tcp_socket->tcp_control.tcp_context, &saved_tcp_context, sizeof(tcp_hc_context_t));
- current_tcp_socket->tcp_control.tcp_context.hc_type = MOSTLY_COMPRESSED_HEADER;
+ memcpy(¤t_tcp_socket->tcp_control.tcp_context,
+ $&saved_tcp_context, sizeof(tcp_hc_context_t));
+ current_tcp_socket->tcp_control.tcp_context.hc_type =
+ MOSTLY_COMPRESSED_HEADER;
#endif
- break;
- }
- case TCP_TIMEOUT:
- {
- current_tcp_socket->tcp_control.send_nxt -= sent_bytes;
- current_tcp_socket->tcp_control.send_wnd += sent_bytes;
+ break;
+ }
+
+ case TCP_TIMEOUT: {
+ current_tcp_socket->tcp_control.send_nxt -= sent_bytes;
+ current_tcp_socket->tcp_control.send_wnd += sent_bytes;
#ifdef TCP_HC
- memcpy(¤t_tcp_socket->tcp_control.tcp_context, &saved_tcp_context, sizeof(tcp_hc_context_t));
- current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
+ memcpy(¤t_tcp_socket->tcp_control.tcp_context,
+ &saved_tcp_context, sizeof(tcp_hc_context_t));
+ current_tcp_socket->tcp_control.tcp_context.hc_type =
+ COMPRESSED_HEADER;
#endif
- return -1;
- break;
- }
- }
- }
- }
- return sent_bytes;
- }
-
-uint8_t read_from_socket(socket_internal_t *current_int_tcp_socket, void *buf, int len)
- {
- if (len >= current_int_tcp_socket->tcp_input_buffer_end)
- {
- mutex_lock(¤t_int_tcp_socket->tcp_buffer_mutex);
- uint8_t read_bytes = current_int_tcp_socket->tcp_input_buffer_end;
- memcpy(buf, current_int_tcp_socket->tcp_input_buffer, current_int_tcp_socket->tcp_input_buffer_end);
- current_int_tcp_socket->tcp_input_buffer_end = 0;
- current_int_tcp_socket->socket_values.tcp_control.rcv_wnd += read_bytes;
- mutex_unlock(¤t_int_tcp_socket->tcp_buffer_mutex, 0);
- return read_bytes;
- }
- else
- {
- mutex_lock(¤t_int_tcp_socket->tcp_buffer_mutex);
- memcpy(buf, current_int_tcp_socket->tcp_input_buffer, len);
- memmove(current_int_tcp_socket->tcp_input_buffer, (current_int_tcp_socket->tcp_input_buffer+len), current_int_tcp_socket->tcp_input_buffer_end-len);
- current_int_tcp_socket->tcp_input_buffer_end = current_int_tcp_socket->tcp_input_buffer_end-len;
- current_int_tcp_socket->socket_values.tcp_control.rcv_wnd += len;
- mutex_unlock(¤t_int_tcp_socket->tcp_buffer_mutex, 0);
- return len;
- }
- }
+ return -1;
+ break;
+ }
+ }
+ }
+ }
+
+ return sent_bytes;
+}
+
+uint8_t read_from_socket(socket_internal_t *current_int_tcp_socket,
+ void *buf, int len)
+{
+ if(len >= current_int_tcp_socket->tcp_input_buffer_end) {
+ mutex_lock(¤t_int_tcp_socket->tcp_buffer_mutex);
+ uint8_t read_bytes = current_int_tcp_socket->tcp_input_buffer_end;
+ memcpy(buf, current_int_tcp_socket->tcp_input_buffer,
+ current_int_tcp_socket->tcp_input_buffer_end);
+ current_int_tcp_socket->tcp_input_buffer_end = 0;
+ current_int_tcp_socket->socket_values.tcp_control.rcv_wnd += read_bytes;
+ mutex_unlock(¤t_int_tcp_socket->tcp_buffer_mutex, 0);
+ return read_bytes;
+ }
+ else {
+ mutex_lock(¤t_int_tcp_socket->tcp_buffer_mutex);
+ memcpy(buf, current_int_tcp_socket->tcp_input_buffer, len);
+ memmove(current_int_tcp_socket->tcp_input_buffer,
+ (current_int_tcp_socket->tcp_input_buffer + len),
+ current_int_tcp_socket->tcp_input_buffer_end - len);
+ current_int_tcp_socket->tcp_input_buffer_end =
+ current_int_tcp_socket->tcp_input_buffer_end - len;
+ current_int_tcp_socket->socket_values.tcp_control.rcv_wnd += len;
+ mutex_unlock(¤t_int_tcp_socket->tcp_buffer_mutex, 0);
+ return len;
+ }
+}
int recv(int s, void *buf, uint32_t len, int flags)
- {
- // Variables
- uint8_t read_bytes;
- msg_t m_recv, m_send;
- socket_internal_t *current_int_tcp_socket;
- // Check if socket exists
- if (!isTCPSocket(s))
- {
- printf("INFO: NO TCP SOCKET!\n");
- return -1;
- }
-
- current_int_tcp_socket = getSocket(s);
-
- // Setting Thread PID
- current_int_tcp_socket->recv_pid = thread_getpid();
- if (current_int_tcp_socket->tcp_input_buffer_end > 0)
- {
- return read_from_socket(current_int_tcp_socket, buf, len);
- }
- msg_receive(&m_recv);
- if ((exists_socket(s)) && (current_int_tcp_socket->tcp_input_buffer_end > 0))
- {
- read_bytes = read_from_socket(current_int_tcp_socket, buf, len);
- net_msg_reply(&m_recv, &m_send, UNDEFINED);
- return read_bytes;
- }
-
- // Received FIN
- if (m_recv.type == CLOSE_CONN)
- {
- // Sent FIN_ACK, wait for ACK
- msg_receive(&m_recv);
- // Received ACK, return with closed socket!
- return -1;
- }
- // Received Last ACK (connection closed) or no data to read yet
- return -1;
- }
-
-int32_t recvfrom(int s, void *buf, uint32_t len, int flags, sockaddr6_t *from, uint32_t *fromlen)
- {
- if (isUDPSocket(s))
- {
- msg_t m_recv, m_send;
- ipv6_hdr_t *ipv6_header;
- udp_hdr_t *udp_header;
- uint8_t *payload;
- getSocket(s)->recv_pid = thread_getpid();
-
- msg_receive(&m_recv);
-
- ipv6_header = ((ipv6_hdr_t*)m_recv.content.ptr);
- udp_header = ((udp_hdr_t*)(m_recv.content.ptr + IPV6_HDR_LEN));
- payload = (uint8_t*)(m_recv.content.ptr + IPV6_HDR_LEN+UDP_HDR_LEN);
-
- memset(buf, 0, len);
- memcpy(buf, payload, udp_header->length-UDP_HDR_LEN);
- memcpy(&from->sin6_addr, &ipv6_header->srcaddr, 16);
- from->sin6_family = AF_INET6;
- from->sin6_flowinfo = 0;
- from->sin6_port = udp_header->src_port;
- *fromlen = sizeof(sockaddr6_t);
-
- msg_reply(&m_recv, &m_send);
- return udp_header->length-UDP_HDR_LEN;
- }
- else if (isTCPSocket(s))
- {
- return recv(s, buf, len, flags);
- }
- else
- {
- printf("Socket Type not supported!\n");
- return -1;
- }
- }
-
-int32_t sendto(int s, const void *msg, uint32_t len, int flags, sockaddr6_t *to, uint32_t tolen)
- {
- if (isUDPSocket(s) && (getSocket(s)->socket_values.foreign_address.sin6_port == 0))
- {
- uint8_t send_buffer[BUFFER_SIZE];
-
- ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t*)(&send_buffer));
- udp_hdr_t *current_udp_packet = ((udp_hdr_t*)(&send_buffer[IPV6_HDR_LEN]));
- uint8_t *payload = &send_buffer[IPV6_HDR_LEN+UDP_HDR_LEN];
-
- memcpy(&(temp_ipv6_header->destaddr), &to->sin6_addr, 16);
- ipv6_get_saddr(&(temp_ipv6_header->srcaddr), &(temp_ipv6_header->destaddr));
-
- current_udp_packet->src_port = get_free_source_port(IPPROTO_UDP);
- current_udp_packet->dst_port = to->sin6_port;
- current_udp_packet->checksum = 0;
-
- memcpy(payload, msg, len);
- current_udp_packet->length = UDP_HDR_LEN + len;
- temp_ipv6_header->length = UDP_HDR_LEN + len;
-
- current_udp_packet->checksum = ~udp_csum(temp_ipv6_header, current_udp_packet);
-
- sixlowpan_send(&to->sin6_addr, (uint8_t*)(current_udp_packet), current_udp_packet->length, IPPROTO_UDP);
- return current_udp_packet->length;
- }
- else
- {
- return -1;
- }
- }
+{
+ /* Variables */
+ uint8_t read_bytes;
+ msg_t m_recv, m_send;
+ socket_internal_t *current_int_tcp_socket;
+
+ /* Check if socket exists */
+ if(!isTCPSocket(s)) {
+ printf("INFO: NO TCP SOCKET!\n");
+ return -1;
+ }
+
+ current_int_tcp_socket = getSocket(s);
+
+ /* Setting Thread PID */
+ current_int_tcp_socket->recv_pid = thread_getpid();
+
+ if(current_int_tcp_socket->tcp_input_buffer_end > 0) {
+ return read_from_socket(current_int_tcp_socket, buf, len);
+ }
+
+ msg_receive(&m_recv);
+
+ if((exists_socket(s)) && (current_int_tcp_socket->tcp_input_buffer_end > 0)) {
+ read_bytes = read_from_socket(current_int_tcp_socket, buf, len);
+ net_msg_reply(&m_recv, &m_send, UNDEFINED);
+ return read_bytes;
+ }
+
+ /* Received FIN */
+ if(m_recv.type == CLOSE_CONN) {
+ /* Sent FIN_ACK, wait for ACK */
+ msg_receive(&m_recv);
+ /* Received ACK, return with closed socket! */
+ return -1;
+ }
+
+ /* Received Last ACK (connection closed) or no data to read yet */
+ return -1;
+}
+
+int32_t recvfrom(int s, void *buf, uint32_t len, int flags, sockaddr6_t *from,
+ uint32_t *fromlen)
+{
+ if(isUDPSocket(s)) {
+ msg_t m_recv, m_send;
+ ipv6_hdr_t *ipv6_header;
+ udp_hdr_t *udp_header;
+ uint8_t *payload;
+ getSocket(s)->recv_pid = thread_getpid();
+
+ msg_receive(&m_recv);
+
+ ipv6_header = ((ipv6_hdr_t *)m_recv.content.ptr);
+ udp_header = ((udp_hdr_t *)(m_recv.content.ptr + IPV6_HDR_LEN));
+ payload = (uint8_t *)(m_recv.content.ptr + IPV6_HDR_LEN + UDP_HDR_LEN);
+
+ memset(buf, 0, len);
+ memcpy(buf, payload, udp_header->length - UDP_HDR_LEN);
+ memcpy(&from->sin6_addr, &ipv6_header->srcaddr, 16);
+ from->sin6_family = AF_INET6;
+ from->sin6_flowinfo = 0;
+ from->sin6_port = udp_header->src_port;
+ *fromlen = sizeof(sockaddr6_t);
+
+ msg_reply(&m_recv, &m_send);
+ return udp_header->length - UDP_HDR_LEN;
+ }
+ else if(isTCPSocket(s)) {
+ return recv(s, buf, len, flags);
+ }
+ else {
+ printf("Socket Type not supported!\n");
+ return -1;
+ }
+}
+
+int32_t sendto(int s, const void *msg, uint32_t len, int flags,
+ sockaddr6_t *to, uint32_t tolen)
+{
+ if(isUDPSocket(s) &&
+ (getSocket(s)->socket_values.foreign_address.sin6_port == 0)) {
+ uint8_t send_buffer[BUFFER_SIZE];
+
+ ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t *)(&send_buffer));
+ udp_hdr_t *current_udp_packet = ((udp_hdr_t *)(&send_buffer[IPV6_HDR_LEN]));
+ uint8_t *payload = &send_buffer[IPV6_HDR_LEN + UDP_HDR_LEN];
+
+ memcpy(&(temp_ipv6_header->destaddr), &to->sin6_addr, 16);
+ ipv6_get_saddr(&(temp_ipv6_header->srcaddr), &(temp_ipv6_header->destaddr));
+
+ current_udp_packet->src_port = get_free_source_port(IPPROTO_UDP);
+ current_udp_packet->dst_port = to->sin6_port;
+ current_udp_packet->checksum = 0;
+
+ memcpy(payload, msg, len);
+ current_udp_packet->length = UDP_HDR_LEN + len;
+ temp_ipv6_header->length = UDP_HDR_LEN + len;
+
+ current_udp_packet->checksum = ~udp_csum(temp_ipv6_header,
+ current_udp_packet);
+
+ sixlowpan_send(&to->sin6_addr, (uint8_t *)(current_udp_packet),
+ current_udp_packet->length, IPPROTO_UDP);
+ return current_udp_packet->length;
+ }
+ else {
+ return -1;
+ }
+}
int close(int s)
- {
- socket_internal_t *current_socket = getSocket(s);
- if (current_socket != NULL)
- {
- if (isTCPSocket(s))
- {
- // Variables
- msg_t m_recv;
- uint8_t send_buffer[BUFFER_SIZE];
- ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t*)(&send_buffer));
- tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t*)(&send_buffer[IPV6_HDR_LEN]));
-
- // Check if socket exists and is TCP socket
- if (!isTCPSocket(s))
- {
- return -1;
- }
-
- // Check for ESTABLISHED STATE
- if (current_socket->socket_values.tcp_control.state != ESTABLISHED)
- {
- close_socket(current_socket);
- return 1;
- }
-
- current_socket->send_pid = thread_getpid();
-
- // Refresh local TCP socket information
- current_socket->socket_values.tcp_control.send_una++;
- current_socket->socket_values.tcp_control.state = FIN_WAIT_1;
+{
+ socket_internal_t *current_socket = getSocket(s);
+
+ if(current_socket != NULL) {
+ if(isTCPSocket(s)) {
+ /* Variables */
+ msg_t m_recv;
+ uint8_t send_buffer[BUFFER_SIZE];
+ ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t *)(&send_buffer));
+ tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t *)(&send_buffer[IPV6_HDR_LEN]));
+
+ /* Check if socket exists and is TCP socket */
+ if(!isTCPSocket(s)) {
+ return -1;
+ }
+
+ /* Check for ESTABLISHED STATE */
+ if(current_socket->socket_values.tcp_control.state != ESTABLISHED) {
+ close_socket(current_socket);
+ return 1;
+ }
+
+ current_socket->send_pid = thread_getpid();
+
+ /* Refresh local TCP socket information */
+ current_socket->socket_values.tcp_control.send_una++;
+ current_socket->socket_values.tcp_control.state = FIN_WAIT_1;
#ifdef TCP_HC
- current_socket->socket_values.tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
+ current_socket->socket_values.tcp_control.tcp_context.hc_type =
+ COMPRESSED_HEADER;
#endif
- send_tcp(current_socket, current_tcp_packet, temp_ipv6_header, TCP_FIN, 0);
- msg_receive(&m_recv);
- close_socket(current_socket);
- return 1;
- }
- else if(isUDPSocket(s))
- {
- close_socket(current_socket);
- return 1;
- }
- return -1;
- }
- else
- {
- return -1;
- }
- }
+ send_tcp(current_socket, current_tcp_packet, temp_ipv6_header,
+ TCP_FIN, 0);
+ msg_receive(&m_recv);
+ close_socket(current_socket);
+ return 1;
+ }
+ else if(isUDPSocket(s)) {
+ close_socket(current_socket);
+ return 1;
+ }
+
+ return -1;
+ }
+ else {
+ return -1;
+ }
+}
int bind(int s, sockaddr6_t *name, int namelen)
- {
- if (exists_socket(s))
- {
- socket_t *current_socket = &getSocket(s)->socket_values;
- switch (current_socket->domain)
- {
- case (PF_INET):
- {
- // Not provided
- return -1;
- break;
- }
- case (PF_INET6):
- {
- switch (current_socket->type)
- {
- // TCP
- case (SOCK_STREAM):
- {
- if ((current_socket->protocol == 0) || (current_socket->protocol == IPPROTO_TCP))
- {
- return bind_tcp_socket(s, name, namelen, thread_getpid());
- break;
- }
- else
- {
- return -1;
- break;
- }
- break;
- }
- // UDP
- case (SOCK_DGRAM):
- {
- if ((current_socket->protocol == 0) || (current_socket->protocol == IPPROTO_UDP))
- {
- return bind_udp_socket(s, name, namelen, thread_getpid());
- break;
- }
- else
- {
- return -1;
- break;
- }
- break;
- }
- case (SOCK_SEQPACKET):
- {
- // not provided
- return -1;
- break;
- }
- case (SOCK_RAW):
- {
- // not provided
- return -1;
- break;
- }
- default:
- {
- return -1;
- break;
- }
- }
- break;
- }
- case (PF_UNIX):
- {
- // Not provided
- return -1;
- break;
- }
- }
- }
- else
- {
- printf("SOCKET DOES NOT EXIST!\n");
- return -1;
- }
- return -1;
- }
+{
+ if(exists_socket(s)) {
+ socket_t *current_socket = &getSocket(s)->socket_values;
+
+ switch(current_socket->domain) {
+ case(PF_INET): {
+ /* Not provided */
+ return -1;
+ break;
+ }
+
+ case(PF_INET6): {
+ switch(current_socket->type) {
+ /* TCP */
+ case(SOCK_STREAM): {
+ if((current_socket->protocol == 0) ||
+ (current_socket->protocol == IPPROTO_TCP)) {
+ return bind_tcp_socket(s, name, namelen,
+ thread_getpid());
+ break;
+ }
+ else {
+ return -1;
+ break;
+ }
+
+ break;
+ }
+
+ /* UDP */
+ case(SOCK_DGRAM): {
+ if((current_socket->protocol == 0) ||
+ (current_socket->protocol == IPPROTO_UDP)) {
+ return bind_udp_socket(s, name, namelen,
+ thread_getpid());
+ break;
+ }
+ else {
+ return -1;
+ break;
+ }
+
+ break;
+ }
+
+ case(SOCK_SEQPACKET): {
+ /* not provided */
+ return -1;
+ break;
+ }
+
+ case(SOCK_RAW): {
+ /* not provided */
+ return -1;
+ break;
+ }
+
+ default: {
+ return -1;
+ break;
+ }
+ }
+
+ break;
+ }
+
+ case(PF_UNIX): {
+ /* Not provided */
+ return -1;
+ break;
+ }
+ }
+ }
+ else {
+ printf("SOCKET DOES NOT EXIST!\n");
+ return -1;
+ }
+
+ return -1;
+}
int listen(int s, int backlog)
- {
- if (isTCPSocket(s) && getSocket(s)->socket_values.tcp_control.state == CLOSED)
- {
- socket_internal_t *current_socket = getSocket(s);
- current_socket->socket_values.tcp_control.state = LISTEN;
- return 0;
- }
- else
- {
- return -1;
- }
- }
-
-socket_internal_t *getWaitingConnectionSocket(int socket, ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header)
- {
- int i;
- socket_internal_t *current_socket, *listening_socket = getSocket(socket);
- for (i = 1; i < MAX_SOCKETS+1; i++)
- {
- current_socket = getSocket(i);
- // Connection establishment ACK, Check for 4 touple and state
- if ((ipv6_header != NULL) && (tcp_header != NULL))
- {
- if (is_four_touple(current_socket, ipv6_header, tcp_header) && (current_socket->socket_values.tcp_control.state == SYN_RCVD))
- {
- return current_socket;
- }
- }
- // Connection establishment SYN ACK, check only for port and state
- else
- {
- if ((current_socket->socket_values.tcp_control.state == SYN_RCVD) &&
- (current_socket->socket_values.local_address.sin6_port == listening_socket->socket_values.local_address.sin6_port))
- {
- return current_socket;
- }
- }
- }
- return NULL;
- }
-
-int handle_new_tcp_connection(socket_internal_t *current_queued_int_socket, socket_internal_t *server_socket, uint8_t pid)
- {
- msg_t msg_recv_client_ack, msg_send_client_ack;
- socket_t *current_queued_socket = ¤t_queued_int_socket->socket_values;
- uint8_t send_buffer[BUFFER_SIZE];
- ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t*)(&send_buffer));
- tcp_hdr_t *syn_ack_packet = ((tcp_hdr_t*)(&send_buffer[IPV6_HDR_LEN]));
-
- current_queued_int_socket->recv_pid = thread_getpid();
+{
+ if(isTCPSocket(s) && getSocket(s)->socket_values.tcp_control.state == CLOSED) {
+ socket_internal_t *current_socket = getSocket(s);
+ current_socket->socket_values.tcp_control.state = LISTEN;
+ return 0;
+ }
+ else {
+ return -1;
+ }
+}
+
+socket_internal_t *getWaitingConnectionSocket(int socket,
+ ipv6_hdr_t *ipv6_header,
+ tcp_hdr_t *tcp_header)
+{
+ int i;
+ socket_internal_t *current_socket, *listening_socket = getSocket(socket);
+
+ for(i = 1; i < MAX_SOCKETS + 1; i++) {
+ current_socket = getSocket(i);
+
+ /* Connection establishment ACK, Check for 4 touple and state */
+ if((ipv6_header != NULL) && (tcp_header != NULL)) {
+ if(is_four_touple(current_socket, ipv6_header, tcp_header) &&
+ (current_socket->socket_values.tcp_control.state == SYN_RCVD)) {
+ return current_socket;
+ }
+ }
+ /* Connection establishment SYN ACK, check only for port and state */
+ else {
+ if((current_socket->socket_values.tcp_control.state == SYN_RCVD) &&
+ (current_socket->socket_values.local_address.sin6_port ==
+ listening_socket->socket_values.local_address.sin6_port)) {
+ return current_socket;
+ }
+ }
+ }
+
+ return NULL;
+}
+
+int handle_new_tcp_connection(socket_internal_t *current_queued_int_socket,
+ socket_internal_t *server_socket, uint8_t pid)
+{
+ msg_t msg_recv_client_ack, msg_send_client_ack;
+ socket_t *current_queued_socket = ¤t_queued_int_socket->socket_values;
+ uint8_t send_buffer[BUFFER_SIZE];
+ ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t *)(&send_buffer));
+ tcp_hdr_t *syn_ack_packet = ((tcp_hdr_t *)(&send_buffer[IPV6_HDR_LEN]));
+
+ current_queued_int_socket->recv_pid = thread_getpid();
#ifdef TCP_HC
- current_queued_int_socket->socket_values.tcp_control.tcp_context.hc_type = FULL_HEADER;
- memcpy(¤t_queued_int_socket->socket_values.tcp_control.tcp_context.context_id,
- &server_socket->socket_values.tcp_control.tcp_context.context_id, sizeof(server_socket->socket_values.tcp_control.tcp_context.context_id));
+ current_queued_int_socket->socket_values.tcp_control.tcp_context.hc_type =
+ FULL_HEADER;
+ memcpy(¤t_queued_int_socket->socket_values.tcp_control.tcp_context.context_id,
+ &server_socket->socket_values.tcp_control.tcp_context.context_id,
+ sizeof(server_socket->socket_values.tcp_control.tcp_context.context_id));
#endif
- // Remember current time
- timex_t now;
- vtimer_now(&now);
- current_queued_int_socket->socket_values.tcp_control.last_packet_time = now;
+ /* Remember current time */
+ timex_t now;
+ vtimer_now(&now);
+ current_queued_int_socket->socket_values.tcp_control.last_packet_time = now;
+
+ current_queued_int_socket->socket_values.tcp_control.no_of_retries = 0;
- current_queued_int_socket->socket_values.tcp_control.no_of_retries = 0;
+ /* Set message type to Retry for while loop */
+ msg_recv_client_ack.type = TCP_RETRY;
- // Set message type to Retry for while loop
- msg_recv_client_ack.type = TCP_RETRY;
+ while(msg_recv_client_ack.type == TCP_RETRY) {
+ /* Send packet */
+ send_tcp(current_queued_int_socket, syn_ack_packet, temp_ipv6_header,
+ TCP_SYN_ACK, 0);
- while (msg_recv_client_ack.type == TCP_RETRY)
- {
- // Send packet
- send_tcp(current_queued_int_socket, syn_ack_packet, temp_ipv6_header, TCP_SYN_ACK, 0);
+ /* wait for ACK from Client */
+ msg_receive(&msg_recv_client_ack);
- // wait for ACK from Client
- msg_receive(&msg_recv_client_ack);
- if (msg_recv_client_ack.type == TCP_TIMEOUT)
- {
- // Set status of internal socket back to LISTEN
- server_socket->socket_values.tcp_control.state = LISTEN;
+ if(msg_recv_client_ack.type == TCP_TIMEOUT) {
+ /* Set status of internal socket back to LISTEN */
+ server_socket->socket_values.tcp_control.state = LISTEN;
- close_socket(current_queued_int_socket);
- return -1;
- }
- }
+ close_socket(current_queued_int_socket);
+ return -1;
+ }
+ }
- tcp_hdr_t *tcp_header;
+ tcp_hdr_t *tcp_header;
- tcp_header = ((tcp_hdr_t*)(msg_recv_client_ack.content.ptr));
+ tcp_header = ((tcp_hdr_t *)(msg_recv_client_ack.content.ptr));
- // Check for consistency
- if (tcp_header->ack_nr != current_queued_socket->tcp_control.send_nxt+1)
- {
- printf("TCP packets not consistent!\n");
- }
+ /* Check for consistency */
+ if(tcp_header->ack_nr != current_queued_socket->tcp_control.send_nxt + 1) {
+ printf("TCP packets not consistent!\n");
+ }
- // Got ack, connection established, refresh local and foreign tcp socket status
- set_tcp_cb(¤t_queued_socket->tcp_control, tcp_header->seq_nr+1, current_queued_socket->tcp_control.rcv_wnd, tcp_header->ack_nr,
- tcp_header->ack_nr, tcp_header->window);
+ /* Got ack, connection established, refresh local and foreign tcp socket
+ * status */
+ set_tcp_cb(¤t_queued_socket->tcp_control, tcp_header->seq_nr + 1,
+ current_queued_socket->tcp_control.rcv_wnd, tcp_header->ack_nr,
+ tcp_header->ack_nr, tcp_header->window);
#ifdef TCP_HC
- // Copy TCP context information into new socket
- memset(&server_socket->socket_values.tcp_control.tcp_context, 0, sizeof(tcp_hc_context_t));
+ /* Copy TCP context information into new socket */
+ memset(&server_socket->socket_values.tcp_control.tcp_context, 0,
+ sizeof(tcp_hc_context_t));
#endif
- // Update connection status information
- current_queued_socket->tcp_control.state = ESTABLISHED;
+ /* Update connection status information */
+ current_queued_socket->tcp_control.state = ESTABLISHED;
- // Set status of internal socket back to LISTEN
- server_socket->socket_values.tcp_control.state = LISTEN;
+ /* Set status of internal socket back to LISTEN */
+ server_socket->socket_values.tcp_control.state = LISTEN;
- // send a reply to the TCP handler after processing every information from the TCP ACK packet
- msg_reply(&msg_recv_client_ack, &msg_send_client_ack);
+ /* send a reply to the TCP handler after processing every information from
+ * the TCP ACK packet */
+ msg_reply(&msg_recv_client_ack, &msg_send_client_ack);
- // Reset PID to an unlikely value
- current_queued_int_socket->recv_pid = 255;
+ /* Reset PID to an unlikely value */
+ current_queued_int_socket->recv_pid = 255;
- // Waiting for Clients ACK waiting period to time out
- vtimer_usleep(TCP_SYN_INITIAL_TIMEOUT/2);
+ /* Waiting for Clients ACK waiting period to time out */
+ vtimer_usleep(TCP_SYN_INITIAL_TIMEOUT / 2);
- print_sockets();
+ print_sockets();
- return current_queued_int_socket->socket_id;
- }
+ return current_queued_int_socket->socket_id;
+}
int accept(int s, sockaddr6_t *addr, uint32_t *addrlen)
- {
- socket_internal_t *server_socket = getSocket(s);
- if (isTCPSocket(s) && (server_socket->socket_values.tcp_control.state == LISTEN))
- {
- socket_internal_t *current_queued_socket = getWaitingConnectionSocket(s, NULL, NULL);
- if (current_queued_socket != NULL)
- {
- return handle_new_tcp_connection(current_queued_socket, server_socket, thread_getpid());
- }
- else
- {
- // No waiting connections, waiting for message from TCP Layer
- msg_t msg_recv_client_syn;
- msg_recv_client_syn.type = UNDEFINED;
- while (msg_recv_client_syn.type != TCP_SYN)
- {
- msg_receive(&msg_recv_client_syn);
- }
-
- current_queued_socket = getWaitingConnectionSocket(s, NULL, NULL);
-
- return handle_new_tcp_connection(current_queued_socket, server_socket, thread_getpid());
- }
- }
- else
- {
- return -1;
- }
- }
-
-socket_internal_t *new_tcp_queued_socket(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header)
- {
- int queued_socket_id;
-
- queued_socket_id = socket(PF_INET6, SOCK_STREAM, IPPROTO_TCP);
- socket_internal_t *current_queued_socket = getSocket(queued_socket_id);
-
- // Foreign address
- set_socket_address(¤t_queued_socket->socket_values.foreign_address, AF_INET6, tcp_header->src_port, ipv6_header->flowlabel, &ipv6_header->srcaddr);
-
- // Local address
- set_socket_address(¤t_queued_socket->socket_values.local_address, AF_INET6, tcp_header->dst_port, 0, &ipv6_header->destaddr);
-
- // Foreign TCP information
- if ((tcp_header->dataOffset_reserved*4 > TCP_HDR_LEN) && (*(((uint8_t*)tcp_header)+TCP_HDR_LEN) == TCP_MSS_OPTION))
- {
- current_queued_socket->socket_values.tcp_control.mss = *((uint16_t*)(((uint8_t*)tcp_header)+TCP_HDR_LEN+2));
- }
- else
- {
- current_queued_socket->socket_values.tcp_control.mss = STATIC_MSS;
- }
- current_queued_socket->socket_values.tcp_control.rcv_irs = tcp_header->seq_nr;
- mutex_lock(&global_sequence_clunter_mutex);
- current_queued_socket->socket_values.tcp_control.send_iss = global_sequence_counter;
- mutex_unlock(&global_sequence_clunter_mutex, 0);
- current_queued_socket->socket_values.tcp_control.state = SYN_RCVD;
- set_tcp_cb(¤t_queued_socket->socket_values.tcp_control, tcp_header->seq_nr+1, STATIC_WINDOW,
- current_queued_socket->socket_values.tcp_control.send_iss,
- current_queued_socket->socket_values.tcp_control.send_iss, tcp_header->window);
-
- return current_queued_socket;
- }
+{
+ socket_internal_t *server_socket = getSocket(s);
+
+ if(isTCPSocket(s) && (server_socket->socket_values.tcp_control.state == LISTEN)) {
+ socket_internal_t *current_queued_socket =
+ getWaitingConnectionSocket(s, NULL, NULL);
+
+ if(current_queued_socket != NULL) {
+ return handle_new_tcp_connection(current_queued_socket,
+ server_socket, thread_getpid());
+ }
+ else {
+ /* No waiting connections, waiting for message from TCP Layer */
+ msg_t msg_recv_client_syn;
+ msg_recv_client_syn.type = UNDEFINED;
+
+ while(msg_recv_client_syn.type != TCP_SYN) {
+ msg_receive(&msg_recv_client_syn);
+ }
+
+ current_queued_socket = getWaitingConnectionSocket(s, NULL, NULL);
+
+ return handle_new_tcp_connection(current_queued_socket,
+ server_socket, thread_getpid());
+ }
+ }
+ else {
+ return -1;
+ }
+}
+
+socket_internal_t *new_tcp_queued_socket(ipv6_hdr_t *ipv6_header,
+ tcp_hdr_t *tcp_header)
+{
+ int queued_socket_id;
+
+ queued_socket_id = socket(PF_INET6, SOCK_STREAM, IPPROTO_TCP);
+ socket_internal_t *current_queued_socket = getSocket(queued_socket_id);
+
+ /* Foreign address */
+ set_socket_address(¤t_queued_socket->socket_values.foreign_address,
+ AF_INET6, tcp_header->src_port, ipv6_header->flowlabel,
+ &ipv6_header->srcaddr);
+
+ /* Local address */
+ set_socket_address(¤t_queued_socket->socket_values.local_address,
+ AF_INET6, tcp_header->dst_port, 0,
+ &ipv6_header->destaddr);
+
+ /* Foreign TCP information */
+ if((tcp_header->dataOffset_reserved * 4 > TCP_HDR_LEN) &&
+ (*(((uint8_t *)tcp_header) + TCP_HDR_LEN) == TCP_MSS_OPTION)) {
+ current_queued_socket->socket_values.tcp_control.mss =
+ *((uint16_t *)(((uint8_t *)tcp_header) + TCP_HDR_LEN + 2));
+ }
+ else {
+ current_queued_socket->socket_values.tcp_control.mss = STATIC_MSS;
+ }
+
+ current_queued_socket->socket_values.tcp_control.rcv_irs =
+ tcp_header->seq_nr;
+ mutex_lock(&global_sequence_clunter_mutex);
+ current_queued_socket->socket_values.tcp_control.send_iss =
+ global_sequence_counter;
+ mutex_unlock(&global_sequence_clunter_mutex, 0);
+ current_queued_socket->socket_values.tcp_control.state = SYN_RCVD;
+ set_tcp_cb(¤t_queued_socket->socket_values.tcp_control,
+ tcp_header->seq_nr + 1, STATIC_WINDOW,
+ current_queued_socket->socket_values.tcp_control.send_iss,
+ current_queued_socket->socket_values.tcp_control.send_iss,
+ tcp_header->window);
+
+ return current_queued_socket;
+}
diff --git a/sys/net/destiny/socket.h b/sys/net/destiny/socket.h
index bcda90733293cb65fdda87dfebbc2c0745f2bc97..c043700f1c3eb47b3077c54c03d17d5c9dcb6231 100644
--- a/sys/net/destiny/socket.h
+++ b/sys/net/destiny/socket.h
@@ -1,10 +1,21 @@
-/*
- * socket.h
+/**
+ * Destiny socket API
+ *
+ * Copyright (C) 2013 INRIA.
*
- * Created on: 16.09.2011
- * Author: Oliver
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup destiny
+ * @{
+ * @file socket.h
+ * @brief header for BSD socket API
+ * @author Oliver Gesch <oliver.gesch@googlemail.com>
+ * @}
*/
+
#ifndef SOCKET_H_
#define SOCKET_H_
@@ -119,82 +130,81 @@
#define SEND_MSG_BUF_SIZE 64
-typedef struct socka6
- {
+typedef struct socka6 {
uint8_t sin6_family; /* AF_INET6 */
uint16_t sin6_port; /* transport layer port # */
uint32_t sin6_flowinfo; /* IPv6 flow information */
ipv6_addr_t sin6_addr; /* IPv6 address */
- } sockaddr6_t;
-
-typedef struct tcp_hc_con
- {
- uint16_t context_id;
- uint32_t seq_rcv; // Last received packet values
- uint32_t ack_rcv;
- uint16_t wnd_rcv;
- uint32_t seq_snd; // Last sent packet values
- uint32_t ack_snd;
- uint16_t wnd_snd;
- uint8_t hc_type;
- } tcp_hc_context_t;
-
-typedef struct tcp_control_block
- {
- uint32_t send_una;
- uint32_t send_nxt;
- uint16_t send_wnd;
- uint32_t send_iss;
-
- uint32_t rcv_nxt;
- uint16_t rcv_wnd;
- uint32_t rcv_irs;
-
- timex_t last_packet_time;
- uint8_t no_of_retries;
- uint16_t mss;
-
- uint8_t state;
-
- double srtt;
- double rttvar;
- double rto;
+} sockaddr6_t;
+
+typedef struct tcp_hc_con {
+ uint16_t context_id;
+ uint32_t seq_rcv; // Last received packet values
+ uint32_t ack_rcv;
+ uint16_t wnd_rcv;
+ uint32_t seq_snd; // Last sent packet values
+ uint32_t ack_snd;
+ uint16_t wnd_snd;
+ uint8_t hc_type;
+} tcp_hc_context_t;
+
+typedef struct tcp_control_block {
+ uint32_t send_una;
+ uint32_t send_nxt;
+ uint16_t send_wnd;
+ uint32_t send_iss;
+
+ uint32_t rcv_nxt;
+ uint16_t rcv_wnd;
+ uint32_t rcv_irs;
+
+ timex_t last_packet_time;
+ uint8_t no_of_retries;
+ uint16_t mss;
+
+ uint8_t state;
+
+ double srtt;
+ double rttvar;
+ double rto;
#ifdef TCP_HC
- tcp_hc_context_t tcp_context;
+ tcp_hc_context_t tcp_context;
#endif
- } tcp_cb_t;
-
-typedef struct sock_t
- {
- uint8_t domain;
- uint8_t type;
- uint8_t protocol;
- tcp_cb_t tcp_control;
- sockaddr6_t local_address;
- sockaddr6_t foreign_address;
- } socket_t;
-
-typedef struct socket_in_t
- {
- uint8_t socket_id;
- uint8_t recv_pid;
- uint8_t send_pid;
- uint8_t tcp_input_buffer_end;
- mutex_t tcp_buffer_mutex;
- socket_t socket_values;
- uint8_t tcp_input_buffer[MAX_TCP_BUFFER];
- } socket_internal_t;
+} tcp_cb_t;
+
+typedef struct sock_t {
+ uint8_t domain;
+ uint8_t type;
+ uint8_t protocol;
+ tcp_cb_t tcp_control;
+ sockaddr6_t local_address;
+ sockaddr6_t foreign_address;
+} socket_t;
+
+typedef struct socket_in_t {
+ uint8_t socket_id;
+ uint8_t recv_pid;
+ uint8_t send_pid;
+ uint8_t tcp_input_buffer_end;
+ mutex_t tcp_buffer_mutex;
+ socket_t socket_values;
+ uint8_t tcp_input_buffer[MAX_TCP_BUFFER];
+} socket_internal_t;
extern socket_internal_t sockets[MAX_SOCKETS];
int socket(int domain, int type, int protocol);
int connect(int socket, sockaddr6_t *addr, uint32_t addrlen);
-socket_internal_t *getWaitingConnectionSocket(int socket, ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header);
+socket_internal_t *getWaitingConnectionSocket(int socket,
+ ipv6_hdr_t *ipv6_header,
+ tcp_hdr_t *tcp_header);
void close_socket(socket_internal_t *current_socket);
-int32_t recvfrom( int s, void *buf, uint32_t len, int flags, sockaddr6_t *from, uint32_t *fromlen );
-int32_t sendto( int s, const void *msg, uint32_t len, int flags, sockaddr6_t *to, uint32_t tolen);
+int32_t recvfrom(int s, void *buf, uint32_t len, int flags, sockaddr6_t *from,
+ uint32_t *fromlen);
+int32_t sendto(int s, const void *msg, uint32_t len, int flags,
+ sockaddr6_t *to, uint32_t tolen);
int32_t send(int s, void *msg, uint32_t len, int flags);
int recv(int s, void *buf, uint32_t len, int flags);
int close(int s);
@@ -210,14 +220,23 @@ void print_internal_socket(socket_internal_t *current_socket_internal);
void print_socket(socket_t *current_socket);
void printf_tcp_context(tcp_hc_context_t *current_tcp_context);
bool exists_socket(uint8_t socket);
-socket_internal_t *new_tcp_queued_socket(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header);
-void print_tcp_status(int in_or_out, ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header, socket_t *tcp_socket);
-void set_socket_address(sockaddr6_t *sockaddr, uint8_t sin6_family, uint16_t sin6_port, uint32_t sin6_flowinfo, ipv6_addr_t *sin6_addr);
-void set_tcp_cb(tcp_cb_t *tcp_control, uint32_t rcv_nxt, uint16_t rcv_wnd, uint32_t send_nxt, uint32_t send_una, uint16_t send_wnd);
-void set_tcp_packet(tcp_hdr_t *tcp_hdr, uint16_t src_port, uint16_t dst_port, uint32_t seq_nr, uint32_t ack_nr,
- uint8_t dataOffset_reserved, uint8_t reserved_flags, uint16_t window, uint16_t checksum, uint16_t urg_pointer);
+socket_internal_t *new_tcp_queued_socket(ipv6_hdr_t *ipv6_header,
+ tcp_hdr_t *tcp_header);
+void print_tcp_status(int in_or_out, ipv6_hdr_t *ipv6_header,
+ tcp_hdr_t *tcp_header, socket_t *tcp_socket);
+void set_socket_address(sockaddr6_t *sockaddr, uint8_t sin6_family,
+ uint16_t sin6_port, uint32_t sin6_flowinfo,
+ ipv6_addr_t *sin6_addr);
+void set_tcp_cb(tcp_cb_t *tcp_control, uint32_t rcv_nxt, uint16_t rcv_wnd,
+ uint32_t send_nxt, uint32_t send_una, uint16_t send_wnd);
+void set_tcp_packet(tcp_hdr_t *tcp_hdr, uint16_t src_port, uint16_t dst_port,
+ uint32_t seq_nr, uint32_t ack_nr,
+ uint8_t dataOffset_reserved, uint8_t reserved_flags,
+ uint16_t window, uint16_t checksum, uint16_t urg_pointer);
int check_tcp_consistency(socket_t *current_tcp_socket, tcp_hdr_t *tcp_header);
void switch_tcp_packet_byte_order(tcp_hdr_t *current_tcp_packet);
-int send_tcp(socket_internal_t *current_socket, tcp_hdr_t *current_tcp_packet, ipv6_hdr_t *temp_ipv6_header, uint8_t flags, uint8_t payload_length);
+int send_tcp(socket_internal_t *current_socket, tcp_hdr_t *current_tcp_packet,
+ ipv6_hdr_t *temp_ipv6_header, uint8_t flags,
+ uint8_t payload_length);
bool isTCPSocket(uint8_t s);
#endif /* SOCKET_H_ */
diff --git a/sys/net/destiny/tcp.c b/sys/net/destiny/tcp.c
index 8e2b8a48a4f403a53df566d5877280cecf9f27f8..8f82f641e24cd1dfc3de6b040d49d1b69123e93c 100644
--- a/sys/net/destiny/tcp.c
+++ b/sys/net/destiny/tcp.c
@@ -1,10 +1,21 @@
-/*
- * tcp.c
+/**
+ * Destiny TCP implementation
*
- * Created on: 29.09.2011
- * Author: Oliver
+ * Copyright (C) 2013 INRIA.
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup destiny
+ * @{
+ * @file tcp.c
+ * @brief TCP implementation
+ * @author Oliver Gesch <oliver.gesch@googlemail.com>
+ * @}
*/
+
#include <stdio.h>
#include <thread.h>
#include <string.h>
@@ -22,342 +33,349 @@
#include "../sixlowpan/sixlowpan.h"
void printTCPHeader(tcp_hdr_t *tcp_header)
- {
- printf("\nBEGIN: TCP HEADER\n");
- printf("ack_nr: %" PRIu32 "\n", tcp_header->ack_nr);
- printf("checksum: %i\n", tcp_header->checksum);
- printf("dataOffset_reserved: %i\n", tcp_header->dataOffset_reserved);
- printf("dst_port: %i\n", tcp_header->dst_port);
- printf("reserved_flags: %i\n", tcp_header->reserved_flags);
- printf("seq_nr: %" PRIu32 "\n", tcp_header->seq_nr);
- printf("src_port: %i\n", tcp_header->src_port);
- printf("urg_pointer: %i\n", tcp_header->urg_pointer);
- printf("window: %i\n", tcp_header->window);
- printf("END: TCP HEADER\n");
- }
+{
+ printf("\nBEGIN: TCP HEADER\n");
+ printf("ack_nr: %" PRIu32 "\n", tcp_header->ack_nr);
+ printf("checksum: %i\n", tcp_header->checksum);
+ printf("dataOffset_reserved: %i\n", tcp_header->dataOffset_reserved);
+ printf("dst_port: %i\n", tcp_header->dst_port);
+ printf("reserved_flags: %i\n", tcp_header->reserved_flags);
+ printf("seq_nr: %" PRIu32 "\n", tcp_header->seq_nr);
+ printf("src_port: %i\n", tcp_header->src_port);
+ printf("urg_pointer: %i\n", tcp_header->urg_pointer);
+ printf("window: %i\n", tcp_header->window);
+ printf("END: TCP HEADER\n");
+}
void printArrayRange_tcp(uint8_t *udp_header, uint16_t len)
- {
- int i = 0;
- printf("-------------MEMORY-------------\n");
- for (i = 0; i < len; i++)
- {
- printf("%#x ", *(udp_header+i));
- }
- printf("-------------MEMORY-------------\n");
- }
+{
+ int i = 0;
+ printf("-------------MEMORY-------------\n");
+
+ for(i = 0; i < len; i++) {
+ printf("%#x ", *(udp_header + i));
+ }
+
+ printf("-------------MEMORY-------------\n");
+}
uint16_t tcp_csum(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header)
- {
+{
uint16_t sum;
uint16_t len = ipv6_header->length;
sum = len + IPPROTO_TCP;
- sum = csum(sum, (uint8_t *)&ipv6_header->srcaddr, 2 * sizeof(ipv6_addr_t));
- sum = csum(sum, (uint8_t *)tcp_header, len);
+ sum = csum(sum, (uint8_t *)&ipv6_header->srcaddr, 2 * sizeof(ipv6_addr_t));
+ sum = csum(sum, (uint8_t *)tcp_header, len);
return (sum == 0) ? 0xffff : HTONS(sum);
- }
-
-uint8_t handle_payload(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header, socket_internal_t *tcp_socket, uint8_t *payload)
- {
- msg_t m_send_tcp, m_recv_tcp;
- uint8_t tcp_payload_len = ipv6_header->length-TCP_HDR_LEN;
- uint8_t acknowledged_bytes = 0;
- if (tcp_payload_len > tcp_socket->socket_values.tcp_control.rcv_wnd)
- {
- mutex_lock(&tcp_socket->tcp_buffer_mutex);
- memcpy(tcp_socket->tcp_input_buffer, payload, tcp_socket->socket_values.tcp_control.rcv_wnd);
- acknowledged_bytes = tcp_socket->socket_values.tcp_control.rcv_wnd;
- tcp_socket->socket_values.tcp_control.rcv_wnd = 0;
- tcp_socket->tcp_input_buffer_end = tcp_socket->tcp_input_buffer_end + tcp_socket->socket_values.tcp_control.rcv_wnd;
- mutex_unlock(&tcp_socket->tcp_buffer_mutex, 0);
- }
- else
- {
- mutex_lock(&tcp_socket->tcp_buffer_mutex);
- memcpy(tcp_socket->tcp_input_buffer, payload, tcp_payload_len);
- tcp_socket->socket_values.tcp_control.rcv_wnd = tcp_socket->socket_values.tcp_control.rcv_wnd - tcp_payload_len;
- acknowledged_bytes = tcp_payload_len;
- tcp_socket->tcp_input_buffer_end = tcp_socket->tcp_input_buffer_end + tcp_payload_len;
- mutex_unlock(&tcp_socket->tcp_buffer_mutex, 0);
- }
- if (thread_getstatus(tcp_socket->recv_pid) == STATUS_RECEIVE_BLOCKED)
- {
- net_msg_send_recv(&m_send_tcp, &m_recv_tcp, tcp_socket->recv_pid, UNDEFINED);
- }
-
- return acknowledged_bytes;
- }
-
-void handle_tcp_ack_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header, socket_internal_t *tcp_socket)
- {
- msg_t m_recv_tcp, m_send_tcp;
- uint8_t target_pid;
-
- if (tcp_socket->socket_values.tcp_control.state == LAST_ACK)
- {
- target_pid = tcp_socket->recv_pid;
- close_socket(tcp_socket);
- msg_send(&m_send_tcp, target_pid, 0);
- return;
- }
- else if (tcp_socket->socket_values.tcp_control.state == CLOSING)
- {
- msg_send(&m_send_tcp, tcp_socket->recv_pid, 0);
- msg_send(&m_send_tcp, tcp_socket->send_pid, 0);
- return;
- }
- else if (getWaitingConnectionSocket(tcp_socket->socket_id, ipv6_header, tcp_header) != NULL)
- {
-// printf("sending ACK to queued socket!\n");
- m_send_tcp.content.ptr = (char*)tcp_header;
- net_msg_send_recv(&m_send_tcp, &m_recv_tcp, tcp_socket->recv_pid, TCP_ACK);
- return;
- }
- else if (tcp_socket->socket_values.tcp_control.state == ESTABLISHED)
- {
- if (check_tcp_consistency(&tcp_socket->socket_values, tcp_header) == PACKET_OK)
- {
- m_send_tcp.content.ptr = (char*)tcp_header;
- net_msg_send(&m_send_tcp, tcp_socket->send_pid, 0, TCP_ACK);
- return;
- }
- }
- printf("NO WAY OF HANDLING THIS ACK!\n");
- }
-
-void handle_tcp_rst_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header, socket_internal_t *tcp_socket)
- {
- // TODO: Reset connection
- }
-
-void handle_tcp_syn_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header, socket_internal_t *tcp_socket)
- {
- msg_t m_send_tcp;
- if (tcp_socket->socket_values.tcp_control.state == LISTEN)
- {
- socket_internal_t *new_socket = new_tcp_queued_socket(ipv6_header, tcp_header);
- if (new_socket != NULL)
- {
+}
+
+uint8_t handle_payload(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header,
+ socket_internal_t *tcp_socket, uint8_t *payload)
+{
+ msg_t m_send_tcp, m_recv_tcp;
+ uint8_t tcp_payload_len = ipv6_header->length - TCP_HDR_LEN;
+ uint8_t acknowledged_bytes = 0;
+
+ if(tcp_payload_len > tcp_socket->socket_values.tcp_control.rcv_wnd) {
+ mutex_lock(&tcp_socket->tcp_buffer_mutex);
+ memcpy(tcp_socket->tcp_input_buffer, payload,
+ tcp_socket->socket_values.tcp_control.rcv_wnd);
+ acknowledged_bytes = tcp_socket->socket_values.tcp_control.rcv_wnd;
+ tcp_socket->socket_values.tcp_control.rcv_wnd = 0;
+ tcp_socket->tcp_input_buffer_end = tcp_socket->tcp_input_buffer_end +
+ tcp_socket->socket_values.tcp_control.rcv_wnd;
+ mutex_unlock(&tcp_socket->tcp_buffer_mutex, 0);
+ }
+ else {
+ mutex_lock(&tcp_socket->tcp_buffer_mutex);
+ memcpy(tcp_socket->tcp_input_buffer, payload, tcp_payload_len);
+ tcp_socket->socket_values.tcp_control.rcv_wnd =
+ tcp_socket->socket_values.tcp_control.rcv_wnd - tcp_payload_len;
+ acknowledged_bytes = tcp_payload_len;
+ tcp_socket->tcp_input_buffer_end = tcp_socket->tcp_input_buffer_end +
+ tcp_payload_len;
+ mutex_unlock(&tcp_socket->tcp_buffer_mutex, 0);
+ }
+
+ if(thread_getstatus(tcp_socket->recv_pid) == STATUS_RECEIVE_BLOCKED) {
+ net_msg_send_recv(&m_send_tcp, &m_recv_tcp, tcp_socket->recv_pid, UNDEFINED);
+ }
+
+ return acknowledged_bytes;
+}
+
+void handle_tcp_ack_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header,
+ socket_internal_t *tcp_socket)
+{
+ msg_t m_recv_tcp, m_send_tcp;
+ uint8_t target_pid;
+
+ if(tcp_socket->socket_values.tcp_control.state == LAST_ACK) {
+ target_pid = tcp_socket->recv_pid;
+ close_socket(tcp_socket);
+ msg_send(&m_send_tcp, target_pid, 0);
+ return;
+ }
+ else if(tcp_socket->socket_values.tcp_control.state == CLOSING) {
+ msg_send(&m_send_tcp, tcp_socket->recv_pid, 0);
+ msg_send(&m_send_tcp, tcp_socket->send_pid, 0);
+ return;
+ }
+ else if(getWaitingConnectionSocket(tcp_socket->socket_id, ipv6_header,
+ tcp_header) != NULL) {
+ m_send_tcp.content.ptr = (char *)tcp_header;
+ net_msg_send_recv(&m_send_tcp, &m_recv_tcp, tcp_socket->recv_pid, TCP_ACK);
+ return;
+ }
+ else if(tcp_socket->socket_values.tcp_control.state == ESTABLISHED) {
+ if(check_tcp_consistency(&tcp_socket->socket_values, tcp_header) == PACKET_OK) {
+ m_send_tcp.content.ptr = (char *)tcp_header;
+ net_msg_send(&m_send_tcp, tcp_socket->send_pid, 0, TCP_ACK);
+ return;
+ }
+ }
+
+ printf("NO WAY OF HANDLING THIS ACK!\n");
+}
+
+void handle_tcp_rst_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header,
+ socket_internal_t *tcp_socket)
+{
+ /* TODO: Reset connection */
+}
+
+void handle_tcp_syn_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header,
+ socket_internal_t *tcp_socket)
+{
+ msg_t m_send_tcp;
+
+ if(tcp_socket->socket_values.tcp_control.state == LISTEN) {
+ socket_internal_t *new_socket = new_tcp_queued_socket(ipv6_header,
+ tcp_header);
+
+ if(new_socket != NULL) {
#ifdef TCP_HC
- update_tcp_hc_context(true, new_socket, tcp_header);
+ update_tcp_hc_context(true, new_socket, tcp_header);
#endif
- // notify socket function accept(..) that a new connection request has arrived
- // No need to wait for an answer because the server accept() function isnt reading from anything other than the queued sockets
- net_msg_send(&m_send_tcp, tcp_socket->recv_pid, 0, TCP_SYN);
- }
- else
- {
- printf("Dropped TCP SYN Message because an error occured while requesting a new queued socket!\n");
- }
- }
- else
- {
- printf("Dropped TCP SYN Message because socket was not in state LISTEN!");
- }
- }
-
-void handle_tcp_syn_ack_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header, socket_internal_t *tcp_socket)
- {
- msg_t m_send_tcp;
- if (tcp_socket->socket_values.tcp_control.state == SYN_SENT)
- {
- m_send_tcp.content.ptr = (char*) tcp_header;
- net_msg_send(&m_send_tcp, tcp_socket->recv_pid, 0, TCP_SYN_ACK);
- }
- else
- {
- printf("Socket not in state SYN_SENT, dropping SYN-ACK-packet!");
- }
- }
-
-void handle_tcp_fin_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header, socket_internal_t *tcp_socket)
- {
- msg_t m_send;
- socket_t *current_tcp_socket = &tcp_socket->socket_values;
- uint8_t send_buffer[BUFFER_SIZE];
- ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t*)(&send_buffer));
- tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t*)(&send_buffer[IPV6_HDR_LEN]));
-
- set_tcp_cb(¤t_tcp_socket->tcp_control, tcp_header->seq_nr+1, current_tcp_socket->tcp_control.send_wnd, tcp_header->ack_nr,
- tcp_header->ack_nr, tcp_header->window);
+ /* notify socket function accept(..) that a new connection request
+ * has arrived. No need to wait for an answer because the server
+ * accept() function isnt reading from anything other than the
+ * queued sockets */
+ net_msg_send(&m_send_tcp, tcp_socket->recv_pid, 0, TCP_SYN);
+ }
+ else {
+ printf("Dropped TCP SYN Message because an error occured while
+ requesting a new queued socket!\n");
+ }
+ }
+ else {
+ printf("Dropped TCP SYN Message because socket was not in state LISTEN!");
+ }
+}
+
+void handle_tcp_syn_ack_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header,
+ socket_internal_t *tcp_socket)
+{
+ msg_t m_send_tcp;
+
+ if(tcp_socket->socket_values.tcp_control.state == SYN_SENT) {
+ m_send_tcp.content.ptr = (char *) tcp_header;
+ net_msg_send(&m_send_tcp, tcp_socket->recv_pid, 0, TCP_SYN_ACK);
+ }
+ else {
+ printf("Socket not in state SYN_SENT, dropping SYN-ACK-packet!");
+ }
+}
+
+void handle_tcp_fin_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header,
+ socket_internal_t *tcp_socket)
+{
+ msg_t m_send;
+ socket_t *current_tcp_socket = &tcp_socket->socket_values;
+ uint8_t send_buffer[BUFFER_SIZE];
+ ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t *)(&send_buffer));
+ tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t *)(&send_buffer[IPV6_HDR_LEN]));
+
+ set_tcp_cb(¤t_tcp_socket->tcp_control, tcp_header->seq_nr + 1,
+ current_tcp_socket->tcp_control.send_wnd, tcp_header->ack_nr,
+ tcp_header->ack_nr, tcp_header->window);
#ifdef TCP_HC
- current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
+ current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
#endif
- if (current_tcp_socket->tcp_control.state == FIN_WAIT_1)
- {
- current_tcp_socket->tcp_control.state = CLOSING;
+ if(current_tcp_socket->tcp_control.state == FIN_WAIT_1) {
+ current_tcp_socket->tcp_control.state = CLOSING;
+
+ send_tcp(tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_FIN_ACK, 0);
+ }
+ else {
+ current_tcp_socket->tcp_control.state = LAST_ACK;
- send_tcp(tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_FIN_ACK, 0);
- }
- else
- {
- current_tcp_socket->tcp_control.state = LAST_ACK;
+ send_tcp(tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_FIN_ACK, 0);
+ }
- send_tcp(tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_FIN_ACK, 0);
- }
- net_msg_send(&m_send, tcp_socket->recv_pid, 0, CLOSE_CONN);
- }
+ net_msg_send(&m_send, tcp_socket->recv_pid, 0, CLOSE_CONN);
+}
-void handle_tcp_fin_ack_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header, socket_internal_t *tcp_socket)
- {
- msg_t m_send;
- socket_t *current_tcp_socket = &tcp_socket->socket_values;
- uint8_t send_buffer[BUFFER_SIZE];
- ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t*)(&send_buffer));
- tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t*)(&send_buffer[IPV6_HDR_LEN]));
+void handle_tcp_fin_ack_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header,
+ socket_internal_t *tcp_socket)
+{
+ msg_t m_send;
+ socket_t *current_tcp_socket = &tcp_socket->socket_values;
+ uint8_t send_buffer[BUFFER_SIZE];
+ ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t *)(&send_buffer));
+ tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t *)(&send_buffer[IPV6_HDR_LEN]));
- current_tcp_socket->tcp_control.state = CLOSED;
+ current_tcp_socket->tcp_control.state = CLOSED;
- set_tcp_cb(¤t_tcp_socket->tcp_control, tcp_header->seq_nr+1, current_tcp_socket->tcp_control.send_wnd, tcp_header->ack_nr,
- tcp_header->ack_nr, tcp_header->window);
+ set_tcp_cb(¤t_tcp_socket->tcp_control, tcp_header->seq_nr + 1,
+ current_tcp_socket->tcp_control.send_wnd, tcp_header->ack_nr,
+ tcp_header->ack_nr, tcp_header->window);
#ifdef TCP_HC
- current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
+ current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
#endif
- send_tcp(tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_ACK, 0);
+ send_tcp(tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_ACK, 0);
- msg_send(&m_send, tcp_socket->send_pid, 0);
- msg_send(&m_send, tcp_socket->recv_pid, 0);
- }
+ msg_send(&m_send, tcp_socket->send_pid, 0);
+ msg_send(&m_send, tcp_socket->recv_pid, 0);
+}
-void handle_tcp_no_flags_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header, socket_internal_t *tcp_socket, uint8_t *payload)
- {
- uint8_t tcp_payload_len = ipv6_header->length-TCP_HDR_LEN, read_bytes = 0;
- socket_t *current_tcp_socket = &tcp_socket->socket_values;
- uint8_t send_buffer[BUFFER_SIZE];
- ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t*)(&send_buffer));
- tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t*)(&send_buffer[IPV6_HDR_LEN]));
+void handle_tcp_no_flags_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header,
+ socket_internal_t *tcp_socket, uint8_t *payload)
+{
+ uint8_t tcp_payload_len = ipv6_header->length - TCP_HDR_LEN, read_bytes = 0;
+ socket_t *current_tcp_socket = &tcp_socket->socket_values;
+ uint8_t send_buffer[BUFFER_SIZE];
+ ipv6_hdr_t *temp_ipv6_header = ((ipv6_hdr_t *)(&send_buffer));
+ tcp_hdr_t *current_tcp_packet = ((tcp_hdr_t *)(&send_buffer[IPV6_HDR_LEN]));
- if (tcp_payload_len > 0)
- {
+ if(tcp_payload_len > 0) {
- if (check_tcp_consistency(current_tcp_socket, tcp_header) == PACKET_OK)
- {
- read_bytes = handle_payload(ipv6_header, tcp_header, tcp_socket, payload);
+ if(check_tcp_consistency(current_tcp_socket, tcp_header) == PACKET_OK) {
+ read_bytes = handle_payload(ipv6_header, tcp_header, tcp_socket, payload);
- // Refresh TCP status values
- current_tcp_socket->tcp_control.state = ESTABLISHED;
+ /* Refresh TCP status values */
+ current_tcp_socket->tcp_control.state = ESTABLISHED;
- set_tcp_cb(¤t_tcp_socket->tcp_control,
- tcp_header->seq_nr + read_bytes,
- current_tcp_socket->tcp_control.rcv_wnd,
- current_tcp_socket->tcp_control.send_nxt,
- current_tcp_socket->tcp_control.send_una,
- current_tcp_socket->tcp_control.send_wnd);
+ set_tcp_cb(¤t_tcp_socket->tcp_control,
+ tcp_header->seq_nr + read_bytes,
+ current_tcp_socket->tcp_control.rcv_wnd,
+ current_tcp_socket->tcp_control.send_nxt,
+ current_tcp_socket->tcp_control.send_una,
+ current_tcp_socket->tcp_control.send_wnd);
- // Send packet
-// block_continue_thread();
+ /* Send packet */
+ // block_continue_thread();
#ifdef TCP_HC
- current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
+ current_tcp_socket->tcp_control.tcp_context.hc_type = COMPRESSED_HEADER;
#endif
- send_tcp(tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_ACK, 0);
- }
- // ACK packet probably got lost
- else
- {
-// block_continue_thread();
+ send_tcp(tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_ACK, 0);
+ }
+ /* ACK packet probably got lost */
+ else {
+ // block_continue_thread();
#ifdef TCP_HC
- current_tcp_socket->tcp_control.tcp_context.hc_type = FULL_HEADER;
+ current_tcp_socket->tcp_control.tcp_context.hc_type = FULL_HEADER;
#endif
- send_tcp(tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_ACK, 0);
- }
- }
- }
-
-void tcp_packet_handler (void)
- {
- msg_t m_recv_ip, m_send_ip;
- ipv6_hdr_t *ipv6_header;
- tcp_hdr_t *tcp_header;
- uint8_t *payload;
- socket_internal_t *tcp_socket = NULL;
- uint16_t chksum;
-
- while (1)
- {
- msg_receive(&m_recv_ip);
-
- ipv6_header = ((ipv6_hdr_t*)m_recv_ip.content.ptr);
- tcp_header = ((tcp_hdr_t*)(m_recv_ip.content.ptr + IPV6_HDR_LEN));
+ send_tcp(tcp_socket, current_tcp_packet, temp_ipv6_header, TCP_ACK, 0);
+ }
+ }
+}
+
+void tcp_packet_handler(void)
+{
+ msg_t m_recv_ip, m_send_ip;
+ ipv6_hdr_t *ipv6_header;
+ tcp_hdr_t *tcp_header;
+ uint8_t *payload;
+ socket_internal_t *tcp_socket = NULL;
+ uint16_t chksum;
+
+ while(1) {
+ msg_receive(&m_recv_ip);
+
+ ipv6_header = ((ipv6_hdr_t *)m_recv_ip.content.ptr);
+ tcp_header = ((tcp_hdr_t *)(m_recv_ip.content.ptr + IPV6_HDR_LEN));
#ifdef TCP_HC
- tcp_socket = decompress_tcp_packet(ipv6_header);
+ tcp_socket = decompress_tcp_packet(ipv6_header);
#else
- switch_tcp_packet_byte_order(tcp_header);
- tcp_socket = get_tcp_socket(ipv6_header, tcp_header);
+ switch_tcp_packet_byte_order(tcp_header);
+ tcp_socket = get_tcp_socket(ipv6_header, tcp_header);
#endif
- chksum = tcp_csum(ipv6_header, tcp_header);
+ chksum = tcp_csum(ipv6_header, tcp_header);
- payload = (uint8_t*)(m_recv_ip.content.ptr + IPV6_HDR_LEN + tcp_header->dataOffset_reserved*4);
+ payload = (uint8_t *)(m_recv_ip.content.ptr + IPV6_HDR_LEN +
+ tcp_header->dataOffset_reserved * 4);
- if ((chksum == 0xffff) && (tcp_socket != NULL))
- {
+ if((chksum == 0xffff) && (tcp_socket != NULL)) {
#ifdef TCP_HC
- update_tcp_hc_context(true, tcp_socket, tcp_header);
+ update_tcp_hc_context(true, tcp_socket, tcp_header);
#endif
- // Remove reserved bits from tcp flags field
- uint8_t tcp_flags = tcp_header->reserved_flags & REMOVE_RESERVED;
-
- switch (tcp_flags)
- {
- case TCP_ACK:
- {
- // only ACK Bit set
- handle_tcp_ack_packet(ipv6_header, tcp_header, tcp_socket);
- break;
- }
- case TCP_RST:
- {
- printf("RST Bit set!\n");
- // only RST Bit set
- handle_tcp_rst_packet(ipv6_header, tcp_header, tcp_socket);
- break;
- }
- case TCP_SYN:
- {
- // only SYN Bit set, look for matching, listening socket and request new queued socket
- printf("SYN Bit set!\n");
- handle_tcp_syn_packet(ipv6_header, tcp_header, tcp_socket);
- break;
- }
- case TCP_SYN_ACK:
- {
- // only SYN and ACK Bit set, complete three way handshake when socket in state SYN_SENT
- handle_tcp_syn_ack_packet(ipv6_header, tcp_header, tcp_socket);
- break;
- }
- case TCP_FIN:
- {
- printf("FIN Bit set!\n");
- // only FIN Bit set
- handle_tcp_fin_packet(ipv6_header, tcp_header, tcp_socket);
- break;
- }
- case TCP_FIN_ACK:
- {
- printf("FIN ACK Bit set!\n");
- // only FIN and ACK Bit set
- handle_tcp_fin_ack_packet(ipv6_header, tcp_header, tcp_socket);
- break;
- }
- default:
- {
-// printf("DEFAULT!\n");
- handle_tcp_no_flags_packet(ipv6_header, tcp_header, tcp_socket, payload);
- }
- }
- }
- else
- {
- printf("Wrong checksum (%x) or no corresponding socket found!\n", chksum);
- printArrayRange(((uint8_t *)ipv6_header), IPV6_HDR_LEN+ipv6_header->length, "Incoming");
- print_tcp_status(INC_PACKET, ipv6_header, tcp_header, &tcp_socket->socket_values);
- }
-
- msg_reply(&m_recv_ip, &m_send_ip);
- }
- }
-
+ /* Remove reserved bits from tcp flags field */
+ uint8_t tcp_flags = tcp_header->reserved_flags & REMOVE_RESERVED;
+
+ switch(tcp_flags) {
+ case TCP_ACK: {
+ /* only ACK Bit set */
+ handle_tcp_ack_packet(ipv6_header, tcp_header, tcp_socket);
+ break;
+ }
+
+ case TCP_RST: {
+ printf("RST Bit set!\n");
+ /* only RST Bit set */
+ handle_tcp_rst_packet(ipv6_header, tcp_header, tcp_socket);
+ break;
+ }
+
+ case TCP_SYN: {
+ /* only SYN Bit set, look for matching, listening socket
+ * and request new queued socket */
+ printf("SYN Bit set!\n");
+ handle_tcp_syn_packet(ipv6_header, tcp_header, tcp_socket);
+ break;
+ }
+
+ case TCP_SYN_ACK: {
+ /* only SYN and ACK Bit set, complete three way handshake
+ * when socket in state SYN_SENT */
+ handle_tcp_syn_ack_packet(ipv6_header, tcp_header, tcp_socket);
+ break;
+ }
+
+ case TCP_FIN: {
+ printf("FIN Bit set!\n");
+ /* only FIN Bit set */
+ handle_tcp_fin_packet(ipv6_header, tcp_header, tcp_socket);
+ break;
+ }
+
+ case TCP_FIN_ACK: {
+ printf("FIN ACK Bit set!\n");
+ /* only FIN and ACK Bit set */
+ handle_tcp_fin_ack_packet(ipv6_header, tcp_header, tcp_socket);
+ break;
+ }
+
+ default: {
+ handle_tcp_no_flags_packet(ipv6_header, tcp_header,
+ tcp_socket, payload);
+ }
+ }
+ }
+ else {
+ printf("Wrong checksum (%x) or no corresponding socket found!\n",
+ chksum);
+ printArrayRange(((uint8_t *)ipv6_header), IPV6_HDR_LEN +
+ ipv6_header->length, "Incoming");
+ print_tcp_status(INC_PACKET, ipv6_header, tcp_header,
+ &tcp_socket->socket_values);
+ }
+
+ msg_reply(&m_recv_ip, &m_send_ip);
+ }
+}
diff --git a/sys/net/destiny/tcp.h b/sys/net/destiny/tcp.h
index f2c37dbb669ffc54f000f903e2b19650f52b1f7a..7c33c56f85f426521374799364d68f3b93250d90 100644
--- a/sys/net/destiny/tcp.h
+++ b/sys/net/destiny/tcp.h
@@ -1,8 +1,18 @@
-/*
- * tcp.h
+/**
+ * Destiny TCP header
*
- * Created on: 29.09.2011
- * Author: Oliver
+ * Copyright (C) 2013 INRIA.
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup destiny
+ * @{
+ * @file tcp.c
+ * @brief TCP data structs and prototypes
+ * @author Oliver Gesch <oliver.gesch@googlemail.com>
+ * @}
*/
#ifndef TCP_H_
@@ -16,42 +26,39 @@
#define TCP_WSF_OPTION 0x03 // Window scale factor
#define TCP_TS_OPTION 0x08 // Timestamp
-enum tcp_flags
- {
- TCP_ACK = 0x08,
- TCP_URG_PSH = 0x14,
- TCP_RST = 0x20,
- TCP_SYN = 0x40,
- TCP_SYN_ACK = 0x48,
- TCP_FIN = 0x80,
- TCP_FIN_ACK = 0x88
- };
-
-enum tcp_states
- {
- CLOSED = 0,
- LISTEN = 1,
- SYN_SENT = 2,
- SYN_RCVD = 3,
- ESTABLISHED = 4,
- FIN_WAIT_1 = 5,
- FIN_WAIT_2 = 6,
- CLOSE_WAIT = 7,
- CLOSING = 8,
- LAST_ACK = 9,
- TIME_WAIT = 10,
- UNKNOWN = 11
- };
-
-enum tcp_codes
- {
- UNDEFINED = 0,
- PACKET_OK = 1,
- CLOSE_CONN = 2,
- SEQ_NO_TOO_SMALL = 3,
- ACK_NO_TOO_SMALL = 4,
- ACK_NO_TOO_BIG = 5
- };
+enum tcp_flags {
+ TCP_ACK = 0x08,
+ TCP_URG_PSH = 0x14,
+ TCP_RST = 0x20,
+ TCP_SYN = 0x40,
+ TCP_SYN_ACK = 0x48,
+ TCP_FIN = 0x80,
+ TCP_FIN_ACK = 0x88
+};
+
+enum tcp_states {
+ CLOSED = 0,
+ LISTEN = 1,
+ SYN_SENT = 2,
+ SYN_RCVD = 3,
+ ESTABLISHED = 4,
+ FIN_WAIT_1 = 5,
+ FIN_WAIT_2 = 6,
+ CLOSE_WAIT = 7,
+ CLOSING = 8,
+ LAST_ACK = 9,
+ TIME_WAIT = 10,
+ UNKNOWN = 11
+};
+
+enum tcp_codes {
+ UNDEFINED = 0,
+ PACKET_OK = 1,
+ CLOSE_CONN = 2,
+ SEQ_NO_TOO_SMALL = 3,
+ ACK_NO_TOO_SMALL = 4,
+ ACK_NO_TOO_BIG = 5
+};
#define REMOVE_RESERVED 0xFC
@@ -73,15 +80,13 @@ enum tcp_codes
#include "../sixlowpan/sixlowip.h"
-typedef struct __attribute__ ((packed)) tcp_mms_o_t
- {
+typedef struct __attribute__((packed)) tcp_mms_o_t {
uint8_t kind;
uint8_t len;
uint16_t mss;
- } tcp_mss_option_t;
+} tcp_mss_option_t;
-typedef struct __attribute__ ((packed)) tcp_h_t
- {
+typedef struct __attribute__((packed)) tcp_h_t {
uint16_t src_port;
uint16_t dst_port;
uint32_t seq_nr;
@@ -91,7 +96,7 @@ typedef struct __attribute__ ((packed)) tcp_h_t
uint16_t window;
uint16_t checksum;
uint16_t urg_pointer;
- } tcp_hdr_t;
+} tcp_hdr_t;
// uint8_t buffer_tcp[BUFFER_SIZE];
@@ -105,7 +110,7 @@ uint8_t global_context_counter;
mutex_t global_sequence_clunter_mutex;
uint32_t global_sequence_counter;
-void tcp_packet_handler (void);
+void tcp_packet_handler(void);
uint16_t tcp_csum(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header);
void printTCPHeader(tcp_hdr_t *tcp_header);
void printArrayRange_tcp(uint8_t *udp_header, uint16_t len);
diff --git a/sys/net/destiny/tcp_hc.c b/sys/net/destiny/tcp_hc.c
index 97f3827eaeee7c39c0a368e451ab4acb258e3991..00ba506578f47a1569d31a38c948b68201336354 100644
--- a/sys/net/destiny/tcp_hc.c
+++ b/sys/net/destiny/tcp_hc.c
@@ -1,10 +1,21 @@
-/*
- * tcp_hc.c
+/**
+ * Destiny TCP header compression
*
- * Created on: 01.02.2012
- * Author: Oliver
+ * Copyright (C) 2013 INRIA.
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup destiny
+ * @{
+ * @file tcp_hc.c
+ * @brief TCP HC
+ * @author Oliver Gesch <oliver.gesch@googlemail.com>
+ * @}
*/
+
#include <stdio.h>
#include <string.h>
#include <stdint.h>
@@ -17,582 +28,606 @@
#ifdef TCP_HC
-socket_internal_t *get_tcp_socket_by_context(ipv6_hdr_t *current_ipv6_header, uint16_t current_context)
- {
- socket_internal_t *temp_socket;
- for (int i = 1; i < MAX_SOCKETS+1; i++)
- {
- temp_socket = getSocket(i);
- if ((temp_socket != NULL) &&
- (ipv6_get_addr_match(&temp_socket->socket_values.foreign_address.sin6_addr, ¤t_ipv6_header->srcaddr) == 128) &&
- (ipv6_get_addr_match(&temp_socket->socket_values.local_address.sin6_addr, ¤t_ipv6_header->destaddr) == 128) &&
- (temp_socket->socket_values.tcp_control.tcp_context.context_id == current_context))
- {
- return temp_socket;
- }
- }
- return NULL;
- }
-
-void update_tcp_hc_context(bool incoming, socket_internal_t *current_socket, tcp_hdr_t *current_tcp_packet)
- {
- tcp_hc_context_t *current_context = ¤t_socket->socket_values.tcp_control.tcp_context;
- if (incoming)
- {
- current_context->ack_rcv = current_tcp_packet->ack_nr;
- current_context->seq_rcv = current_tcp_packet->seq_nr;
- current_context->wnd_rcv = current_tcp_packet->window;
- }
- else
- {
- current_context->ack_snd = current_tcp_packet->ack_nr;
- current_context->seq_snd = current_tcp_packet->seq_nr;
- current_context->wnd_snd = current_tcp_packet->window;
- }
- }
-
-uint16_t compress_tcp_packet(socket_internal_t *current_socket, uint8_t *current_tcp_packet, ipv6_hdr_t *temp_ipv6_header, uint8_t flags, uint8_t payload_length)
- {
- socket_t *current_tcp_socket = ¤t_socket->socket_values;
- tcp_hc_context_t *tcp_context = ¤t_tcp_socket->tcp_control.tcp_context;
- tcp_cb_t *tcp_cb = ¤t_tcp_socket->tcp_control;
- tcp_hdr_t full_tcp_header;
- uint16_t packet_size = 0;
- // Connection establisment phase, use FULL_HEADER TCP
- if (tcp_context->hc_type == FULL_HEADER)
- {
- // draft-aayadi-6lowpan-tcphc-01: 5.1 Full header TCP segment. Establishing Connection
-
- // Move tcp packet 3 bytes to add padding and Context ID
- memmove(current_tcp_packet+3, current_tcp_packet, ((((tcp_hdr_t *)current_tcp_packet)->dataOffset_reserved)*4)+payload_length);
-
- // 1 padding byte with value 0x01 to introduce full header TCP_HC segment
- memset(current_tcp_packet, 0x01, 1);
-
- // Adding Context ID
- uint16_t current_context = HTONS(tcp_context->context_id);
- memcpy(current_tcp_packet + 1, ¤t_context, 2);
-
- // Return correct header length (+3)
- packet_size = ((((tcp_hdr_t *)(current_tcp_packet+3))->dataOffset_reserved)*4) + 3 + payload_length;
-
- // Update the tcp context fields
- update_tcp_hc_context(false, current_socket, (tcp_hdr_t *)(current_tcp_packet+3));
-
- // Convert TCP packet to network byte order
- switch_tcp_packet_byte_order((tcp_hdr_t *)(current_tcp_packet+3));
-
- return packet_size;
- }
- // Check for header compression type: COMPRESSED_HEADER
- else if (tcp_context->hc_type == COMPRESSED_HEADER)
- {
- // draft-aayadi-6lowpan-tcphc-01: 5.1 Compressed header TCP segment.
-
- // Temporary variable for TCP_HC_Header Bytes
- uint16_t tcp_hc_header = 0x0000;
-
- // Save TCP_Header to refresh TCP Context values after compressing the packet
- memcpy(&full_tcp_header, current_tcp_packet, TCP_HDR_LEN);
-
- // Temporary variable for storing TCP header beginning
- uint8_t *tcp_packet_begin = current_tcp_packet;
-
- // Position for first TCP header value, TCP_HC_Header and Context ID
- current_tcp_packet += 4;
-
- // Packet size value
- packet_size += 4;
-
- // 5.2. LOWPAN_TCPHC Format
-
- // First 3 bits of TCP_HC_Header are not exactly specified. In this implementation they are (1|1|0)
- // for compressed headers and the CID is always 16 bits (1)
- // (1|1|0|1) = D
- tcp_hc_header |= 0xD000;
-
- /*----------------------------------*/
- /*| Sequence number handling |*/
- /*----------------------------------*/
- if (full_tcp_header.seq_nr == tcp_context->seq_snd)
- {
- // Nothing to do, Seq = (0|0)
- }
- // If the 24 most significant bits haven't changed from previous packet, don't transmit them
- else if ((full_tcp_header.seq_nr&0xFFFFFF00) == (tcp_context->seq_snd&0xFFFFFF00))
- {
- // Seq = (0|1)
- tcp_hc_header |= 0x0400;
-
- // Copy first 8 less significant bits of sequence number into buffer
- *current_tcp_packet = (uint8_t)(full_tcp_header.seq_nr & 0x000000FF);
- current_tcp_packet += 1;
- packet_size += 1;
- }
- // If the 16 most significant bits haven't changed from previous packet, don't transmit them
- else if ((full_tcp_header.seq_nr&0xFFFF0000) == (tcp_context->seq_snd&0xFFFF0000))
- {
- // Seq = (1|0)
- tcp_hc_header |= 0x0800;
-
- // Copy first 16 less significant bits of sequence number into buffer
- *((uint16_t *)current_tcp_packet) = HTONS((uint16_t)(full_tcp_header.seq_nr & 0x0000FFFF));
- current_tcp_packet += 2;
- packet_size += 2;
- }
- // Sending uncompressed sequence number
- else
- {
- // Seq = (1|1)
- tcp_hc_header |= 0x0C00;
-
- // Copy all bits of sequence number into buffer
- uint32_t cur_seq_no = HTONL(full_tcp_header.seq_nr);
- memcpy(current_tcp_packet, &cur_seq_no, 4);
- current_tcp_packet += 4;
- packet_size += 4;
- }
-
- /*----------------------------------*/
- /*| Acknowledgment number handling |*/
- /*----------------------------------*/
- if ((IS_TCP_ACK(full_tcp_header.reserved_flags) &&
- (tcp_cb->tcp_context.ack_snd == full_tcp_header.ack_nr)))
- {
- tcp_context->ack_snd = tcp_context->seq_rcv;
- }
- if (full_tcp_header.ack_nr == tcp_context->ack_snd)
- {
- // Nothing to do, Ack = (0|0)
- }
- // If the 24 most significant bits haven't changed from previous packet, don't transmit them
- else if ((full_tcp_header.ack_nr&0xFFFFFF00) == (tcp_context->ack_snd&0xFFFFFF00))
- {
- // Ack = (0|1)
- tcp_hc_header |= 0x0100;
-
- // Copy first 8 less significant bits of acknowledgment number into buffer
- *current_tcp_packet = (uint8_t)(full_tcp_header.ack_nr & 0x000000FF);
- current_tcp_packet += 1;
- packet_size += 1;
- }
- // If the 16 most significant bits haven't changed from previous packet, don't transmit them
- else if ((full_tcp_header.ack_nr&0xFFFF0000) == (tcp_context->ack_snd&0xFFFF0000))
- {
- // Ack = (1|0)
- tcp_hc_header |= 0x0200;
-
- // Copy first 16 less significant bits of acknowledgment number into buffer
- *((uint16_t *)current_tcp_packet) = HTONS((uint16_t)(full_tcp_header.ack_nr & 0x0000FFFF));
- current_tcp_packet += 2;
- packet_size += 2;
- }
- // Sending uncompressed acknowledgment number
- else
- {
- // Ack = (1|1)
- tcp_hc_header |= 0x0300;
-
- // Copy all bits of acknowledgment number into buffer
- uint32_t cur_ack_nr = HTONL(full_tcp_header.ack_nr);
- memcpy(current_tcp_packet, &cur_ack_nr, 4);
- current_tcp_packet += 4;
- packet_size += 4;
- }
-
- /*----------------------------------*/
- /*| Window handling |*/
- /*----------------------------------*/
- if (full_tcp_header.window == tcp_context->wnd_snd)
- {
- // Nothing to do, Wnd = (0|0)
- }
- // If the 8 most significant bits haven't changed from previous packet, don't transmit them
- else if ((full_tcp_header.window&0xFF00) == (tcp_context->wnd_snd&0xFF00))
- {
- // Wnd = (0|1)
- tcp_hc_header |= 0x0040;
-
- // Copy first 8 less significant bits of window size into buffer
- *current_tcp_packet = (uint8_t)(full_tcp_header.window & 0x00FF);
- current_tcp_packet += 1;
- packet_size += 1;
- }
- // If the 8 less significant bits haven't changed from previous packet, don't transmit them
- else if ((full_tcp_header.window&0x00FF) == (tcp_context->wnd_snd&0x00FF))
- {
- // Wnd = (1|0)
- tcp_hc_header |= 0x0080;
-
- // Copy first 8 most significant bits of window size into buffer
- *current_tcp_packet = (uint8_t)(full_tcp_header.window & 0xFF00);
- current_tcp_packet += 1;
- packet_size += 1;
- }
- // Sending uncompressed window
- else
- {
- // Wnd = (1|1)
- tcp_hc_header |= 0x00C0;
-
- // Copy all bits of window size into buffer
- uint16_t cur_window = HTONS(full_tcp_header.window);
- memcpy(current_tcp_packet, &cur_window, 2);
- current_tcp_packet += 2;
- packet_size += 2;
- }
-
- // FIN flag
- if (IS_TCP_FIN(full_tcp_header.reserved_flags))
- {
- // F = (1)
- tcp_hc_header |= 0x0008;
- }
-
- // Copy checksum into buffer
- uint16_t cur_chk_sum = HTONS(full_tcp_header.checksum);
- memcpy(current_tcp_packet, &cur_chk_sum, 2);
- current_tcp_packet += 2;
- packet_size += 2;
-
- // Copy TCP_HC Bytes into buffer
- uint16_t cur_tcp_hc_header = HTONS(tcp_hc_header);
- memcpy(tcp_packet_begin, &cur_tcp_hc_header, 2);
-
- // Copy TCP_HC Context ID into buffer
- uint16_t cur_context_id = HTONS(tcp_context->context_id);
- memcpy(tcp_packet_begin+2, &cur_context_id, 2);
-
- // Move payload to end of tcp header
- memmove(current_tcp_packet, tcp_packet_begin+TCP_HDR_LEN, payload_length);
-
- // Adding TCP payload length to TCP_HC header length
- packet_size += payload_length;
-
- update_tcp_hc_context(false, current_socket, &full_tcp_header);
-
- return packet_size;
- }
- // Check for header compression type: MOSTLY_COMPRESSED_HEADER
- else if (tcp_context->hc_type == MOSTLY_COMPRESSED_HEADER)
- {
- // draft-aayadi-6lowpan-tcphc-01: 5.1 Compressed header TCP segment.
-
- // Temporary variable for TCP_HC_Header Bytes
- uint16_t tcp_hc_header = 0x0000;
-
- // Save TCP_Header to refresh TCP Context values after compressing the packet
- memcpy(&full_tcp_header, current_tcp_packet, TCP_HDR_LEN);
-
- // Temporary variable for storing TCP header beginning
- uint8_t *tcp_packet_begin = current_tcp_packet;
-
- // Position for first TCP header value, TCP_HC_Header and Context ID
- current_tcp_packet += 4;
-
- // Packet size value
- packet_size += 4;
-
- // 5.2. LOWPAN_TCPHC Format
-
- // First 3 bits of TCP_HC_Header are not exactly specified. In this implementation they are (1|0|0)
- // for mostly compressed headers and the CID is always 16 bits (1)
- // (1|0|0|1) = 9
- tcp_hc_header |= 0x9000;
-
- /*----------------------------------*/
- /*| Sequence number handling |*/
- /*----------------------------------*/
- // Sending uncompressed sequence number
- // Seq = (1|1)
- tcp_hc_header |= 0x0C00;
-
- // Copy all bits of sequence number into buffer
- uint32_t cur_seq_no = HTONL(full_tcp_header.seq_nr);
- memcpy(current_tcp_packet, &cur_seq_no, 4);
- current_tcp_packet += 4;
- packet_size += 4;
-
- /*----------------------------------*/
- /*| Acknowledgment number handling |*/
- /*----------------------------------*/
- // Ack = (1|1)
- tcp_hc_header |= 0x0300;
-
- // Copy all bits of acknowledgment number into buffer
- uint32_t cur_ack_nr = HTONL(full_tcp_header.ack_nr);
- memcpy(current_tcp_packet, &cur_ack_nr, 4);
- current_tcp_packet += 4;
- packet_size += 4;
-
- /*----------------------------------*/
- /*| Window handling |*/
- /*----------------------------------*/
- // Wnd = (1|1)
- tcp_hc_header |= 0x00C0;
-
- // Copy all bits of window size into buffer
- uint16_t cur_window = HTONS(full_tcp_header.window);
- memcpy(current_tcp_packet, &cur_window, 2);
- current_tcp_packet += 2;
- packet_size += 2;
-
- // FIN flag
- if (IS_TCP_FIN(full_tcp_header.reserved_flags))
- {
- // F = (1)
- tcp_hc_header |= 0x0008;
- }
-
- // Copy checksum into buffer
- uint16_t cur_chk_sum = HTONS(full_tcp_header.checksum);
- memcpy(current_tcp_packet, &cur_chk_sum, 2);
- current_tcp_packet += 2;
- packet_size += 2;
-
- // Copy TCP_HC Bytes into buffer
- uint16_t cur_tcp_hc_header = HTONS(tcp_hc_header);
- memcpy(tcp_packet_begin, &cur_tcp_hc_header, 2);
-
- // Copy TCP_HC Context ID into buffer
- uint16_t cur_context_id = HTONS(tcp_context->context_id);
- memcpy(tcp_packet_begin+2, &cur_context_id, 2);
-
- // Move payload to end of tcp header
- memmove(current_tcp_packet, tcp_packet_begin+TCP_HDR_LEN, payload_length);
-
- // Adding TCP payload length to TCP_HC header length
- packet_size += payload_length;
-
- update_tcp_hc_context(false, current_socket, &full_tcp_header);
- return packet_size;
- }
- return 0;
- }
+socket_internal_t *get_tcp_socket_by_context(ipv6_hdr_t *current_ipv6_header,
+ uint16_t current_context)
+{
+ socket_internal_t *temp_socket;
+
+ for(int i = 1; i < MAX_SOCKETS + 1; i++) {
+ temp_socket = getSocket(i);
+
+ if((temp_socket != NULL) &&
+ (ipv6_get_addr_match(&temp_socket->socket_values.foreign_address.sin6_addr,
+ ¤t_ipv6_header->srcaddr) == 128) &&
+ (ipv6_get_addr_match(&temp_socket->socket_values.local_address.sin6_addr,
+ ¤t_ipv6_header->destaddr) == 128) &&
+ (temp_socket->socket_values.tcp_control.tcp_context.context_id ==
+ current_context)) {
+ return temp_socket;
+ }
+ }
+
+ return NULL;
+}
+
+void update_tcp_hc_context(bool incoming, socket_internal_t *current_socket,
+ tcp_hdr_t *current_tcp_packet)
+{
+ tcp_hc_context_t *current_context =
+ ¤t_socket->socket_values.tcp_control.tcp_context;
+
+ if(incoming) {
+ current_context->ack_rcv = current_tcp_packet->ack_nr;
+ current_context->seq_rcv = current_tcp_packet->seq_nr;
+ current_context->wnd_rcv = current_tcp_packet->window;
+ }
+ else {
+ current_context->ack_snd = current_tcp_packet->ack_nr;
+ current_context->seq_snd = current_tcp_packet->seq_nr;
+ current_context->wnd_snd = current_tcp_packet->window;
+ }
+}
+
+uint16_t compress_tcp_packet(socket_internal_t *current_socket,
+ uint8_t *current_tcp_packet,
+ ipv6_hdr_t *temp_ipv6_header,
+ uint8_t flags,
+ uint8_t payload_length)
+{
+ socket_t *current_tcp_socket = ¤t_socket->socket_values;
+ tcp_hc_context_t *tcp_context = ¤t_tcp_socket->tcp_control.tcp_context;
+ tcp_cb_t *tcp_cb = ¤t_tcp_socket->tcp_control;
+ tcp_hdr_t full_tcp_header;
+ uint16_t packet_size = 0;
+
+ /* Connection establisment phase, use FULL_HEADER TCP */
+ if(tcp_context->hc_type == FULL_HEADER) {
+ /* draft-aayadi-6lowpan-tcphc-01: 5.1 Full header TCP segment.
+ * Establishing Connection */
+
+ /* Move tcp packet 3 bytes to add padding and Context ID */
+ memmove(current_tcp_packet + 3, current_tcp_packet,
+ ((((tcp_hdr_t *)current_tcp_packet)->dataOffset_reserved) * 4) +
+ payload_length);
+
+ /* 1 padding byte with value 0x01 to introduce full header TCP_HC
+ * segment */
+ memset(current_tcp_packet, 0x01, 1);
+
+ /* Adding Context ID */
+ uint16_t current_context = HTONS(tcp_context->context_id);
+ memcpy(current_tcp_packet + 1, ¤t_context, 2);
+
+ /* Return correct header length (+3) */
+ packet_size = ((((tcp_hdr_t *)(current_tcp_packet + 3))->dataOffset_reserved) * 4) + 3 +
+ payload_length;
+
+ /* Update the tcp context fields */
+ update_tcp_hc_context(false, current_socket, (tcp_hdr_t *)(current_tcp_packet + 3));
+
+ /* Convert TCP packet to network byte order */
+ switch_tcp_packet_byte_order((tcp_hdr_t *)(current_tcp_packet + 3));
+
+ return packet_size;
+ }
+ /* Check for header compression type: COMPRESSED_HEADER */
+ else if(tcp_context->hc_type == COMPRESSED_HEADER) {
+ /* draft-aayadi-6lowpan-tcphc-01: 5.1 Compressed header TCP segment. */
+
+ /* Temporary variable for TCP_HC_Header Bytes */
+ uint16_t tcp_hc_header = 0x0000;
+
+ /* Save TCP_Header to refresh TCP Context values after compressing the
+ * packet */
+ memcpy(&full_tcp_header, current_tcp_packet, TCP_HDR_LEN);
+
+ /* Temporary variable for storing TCP header beginning */
+ uint8_t *tcp_packet_begin = current_tcp_packet;
+
+ /* Position for first TCP header value, TCP_HC_Header and Context ID */
+ current_tcp_packet += 4;
+
+ /* Packet size value */
+ packet_size += 4;
+
+ /* 5.2. LOWPAN_TCPHC Format */
+
+ /* First 3 bits of TCP_HC_Header are not exactly specified. In this
+ * implementation they are (1|1|0) * for compressed headers and the
+ * CID is always 16 bits (1) */
+ /* (1|1|0|1) = D */
+ tcp_hc_header |= 0xD000;
+
+ /*----------------------------------*/
+ /*| Sequence number handling |*/
+ /*----------------------------------*/
+ if(full_tcp_header.seq_nr == tcp_context->seq_snd) {
+ /* Nothing to do, Seq = (0|0) */
+ }
+ /* If the 24 most significant bits haven't changed from previous
+ * packet, don't transmit them */
+ else if((full_tcp_header.seq_nr & 0xFFFFFF00) == (tcp_context->seq_snd &
+ 0xFFFFFF00)) {
+ /* Seq = (0|1) */
+ tcp_hc_header |= 0x0400;
+
+ /* Copy first 8 less significant bits of sequence number into
+ * buffer */
+ *current_tcp_packet = (uint8_t)(full_tcp_header.seq_nr & 0x000000FF);
+ current_tcp_packet += 1;
+ packet_size += 1;
+ }
+ /* If the 16 most significant bits haven't changed from previous packet,
+ * don't transmit them */
+ else if((full_tcp_header.seq_nr & 0xFFFF0000) == (tcp_context->seq_snd & 0xFFFF0000)) {
+ /* Seq = (1|0) */
+ tcp_hc_header |= 0x0800;
+
+ /* Copy first 16 less significant bits of sequence number into buffer */
+ *((uint16_t *)current_tcp_packet) =
+ HTONS((uint16_t)(full_tcp_header.seq_nr & 0x0000FFFF));
+ current_tcp_packet += 2;
+ packet_size += 2;
+ }
+ /* Sending uncompressed sequence number */
+ else {
+ /* Seq = (1|1) */
+ tcp_hc_header |= 0x0C00;
+
+ /* Copy all bits of sequence number into buffer */
+ uint32_t cur_seq_no = HTONL(full_tcp_header.seq_nr);
+ memcpy(current_tcp_packet, &cur_seq_no, 4);
+ current_tcp_packet += 4;
+ packet_size += 4;
+ }
+
+ /*----------------------------------*/
+ /*| Acknowledgment number handling |*/
+ /*----------------------------------*/
+ if((IS_TCP_ACK(full_tcp_header.reserved_flags) &&
+ (tcp_cb->tcp_context.ack_snd == full_tcp_header.ack_nr))) {
+ tcp_context->ack_snd = tcp_context->seq_rcv;
+ }
+
+ if(full_tcp_header.ack_nr == tcp_context->ack_snd) {
+ /* Nothing to do, Ack = (0|0) */
+ }
+ /* If the 24 most significant bits haven't changed from previous packet,
+ * don't transmit them */
+ else if((full_tcp_header.ack_nr & 0xFFFFFF00) == (tcp_context->ack_snd &
+ 0xFFFFFF00)) {
+ /* Ack = (0|1) */
+ tcp_hc_header |= 0x0100;
+
+ /* Copy first 8 less significant bits of acknowledgment number into
+ * buffer */
+ *current_tcp_packet = (uint8_t)(full_tcp_header.ack_nr & 0x000000FF);
+ current_tcp_packet += 1;
+ packet_size += 1;
+ }
+ /* If the 16 most significant bits haven't changed from previous packet,
+ * don't transmit them */
+ else if((full_tcp_header.ack_nr & 0xFFFF0000) == (tcp_context->ack_snd &
+ 0xFFFF0000)) {
+ /* Ack = (1|0) */
+ tcp_hc_header |= 0x0200;
+
+ /* Copy first 16 less significant bits of acknowledgment number
+ * into buffer */
+ *((uint16_t *)current_tcp_packet) =
+ HTONS((uint16_t)(full_tcp_header.ack_nr & 0x0000FFFF));
+ current_tcp_packet += 2;
+ packet_size += 2;
+ }
+ /* Sending uncompressed acknowledgment number */
+ else {
+ /* Ack = (1|1) */
+ tcp_hc_header |= 0x0300;
+
+ /* Copy all bits of acknowledgment number into buffer */
+ uint32_t cur_ack_nr = HTONL(full_tcp_header.ack_nr);
+ memcpy(current_tcp_packet, &cur_ack_nr, 4);
+ current_tcp_packet += 4;
+ packet_size += 4;
+ }
+
+ /*----------------------------------*/
+ /*| Window handling |*/
+ /*----------------------------------*/
+ if(full_tcp_header.window == tcp_context->wnd_snd) {
+ /* Nothing to do, Wnd = (0|0) */
+ }
+ /* If the 8 most significant bits haven't changed from previous packet,
+ * don't transmit them */
+ else if((full_tcp_header.window & 0xFF00) == (tcp_context->wnd_snd & 0xFF00)) {
+ /* Wnd = (0|1) */
+ tcp_hc_header |= 0x0040;
+
+ /* Copy first 8 less significant bits of window size into buffer */
+ *current_tcp_packet = (uint8_t)(full_tcp_header.window & 0x00FF);
+ current_tcp_packet += 1;
+ packet_size += 1;
+ }
+ /* If the 8 less significant bits haven't changed from previous packet,
+ * don't transmit them */
+ else if((full_tcp_header.window & 0x00FF) == (tcp_context->wnd_snd &
+ 0x00FF)) {
+ /* Wnd = (1|0) */
+ tcp_hc_header |= 0x0080;
+
+ /* Copy first 8 most significant bits of window size into buffer */
+ *current_tcp_packet = (uint8_t)(full_tcp_header.window & 0xFF00);
+ current_tcp_packet += 1;
+ packet_size += 1;
+ }
+ /* Sending uncompressed window */
+ else {
+ /* Wnd = (1|1) */
+ tcp_hc_header |= 0x00C0;
+
+ /* Copy all bits of window size into buffer */
+ uint16_t cur_window = HTONS(full_tcp_header.window);
+ memcpy(current_tcp_packet, &cur_window, 2);
+ current_tcp_packet += 2;
+ packet_size += 2;
+ }
+
+ /* FIN flag */
+ if(IS_TCP_FIN(full_tcp_header.reserved_flags)) {
+ /* F = (1) */
+ tcp_hc_header |= 0x0008;
+ }
+
+ /* Copy checksum into buffer */
+ uint16_t cur_chk_sum = HTONS(full_tcp_header.checksum);
+ memcpy(current_tcp_packet, &cur_chk_sum, 2);
+ current_tcp_packet += 2;
+ packet_size += 2;
+
+ /* Copy TCP_HC Bytes into buffer */
+ uint16_t cur_tcp_hc_header = HTONS(tcp_hc_header);
+ memcpy(tcp_packet_begin, &cur_tcp_hc_header, 2);
+
+ /* Copy TCP_HC Context ID into buffer */
+ uint16_t cur_context_id = HTONS(tcp_context->context_id);
+ memcpy(tcp_packet_begin + 2, &cur_context_id, 2);
+
+ /* Move payload to end of tcp header */
+ memmove(current_tcp_packet, tcp_packet_begin + TCP_HDR_LEN,
+ payload_length);
+
+ /* Adding TCP payload length to TCP_HC header length */
+ packet_size += payload_length;
+
+ update_tcp_hc_context(false, current_socket, &full_tcp_header);
+
+ return packet_size;
+ }
+ /* Check for header compression type: MOSTLY_COMPRESSED_HEADER */
+ else if(tcp_context->hc_type == MOSTLY_COMPRESSED_HEADER) {
+ /* draft-aayadi-6lowpan-tcphc-01: 5.1 Compressed header TCP segment. */
+
+ /* Temporary variable for TCP_HC_Header Bytes */
+ uint16_t tcp_hc_header = 0x0000;
+
+ /* Save TCP_Header to refresh TCP Context values after compressing the
+ * packet */
+ memcpy(&full_tcp_header, current_tcp_packet, TCP_HDR_LEN);
+
+ /* Temporary variable for storing TCP header beginning */
+ uint8_t *tcp_packet_begin = current_tcp_packet;
+
+ /* Position for first TCP header value, TCP_HC_Header and Context ID */
+ current_tcp_packet += 4;
+
+ /* Packet size value */
+ packet_size += 4;
+
+ /* 5.2. LOWPAN_TCPHC Format */
+
+ /* First 3 bits of TCP_HC_Header are not exactly specified. In this
+ * implementation they are (1|0|0) for mostly compressed headers and
+ * the CID is always 16 bits (1) */
+ /* (1|0|0|1) = 9 */
+ tcp_hc_header |= 0x9000;
+
+ /*----------------------------------*/
+ /*| Sequence number handling |*/
+ /*----------------------------------*/
+ /* Sending uncompressed sequence number */
+ /* Seq = (1|1) */
+ tcp_hc_header |= 0x0C00;
+
+ /* Copy all bits of sequence number into buffer */
+ uint32_t cur_seq_no = HTONL(full_tcp_header.seq_nr);
+ memcpy(current_tcp_packet, &cur_seq_no, 4);
+ current_tcp_packet += 4;
+ packet_size += 4;
+
+ /*----------------------------------*/
+ /*| Acknowledgment number handling |*/
+ /*----------------------------------*/
+ /* Ack = (1|1) */
+ tcp_hc_header |= 0x0300;
+
+ /* Copy all bits of acknowledgment number into buffer */
+ uint32_t cur_ack_nr = HTONL(full_tcp_header.ack_nr);
+ memcpy(current_tcp_packet, &cur_ack_nr, 4);
+ current_tcp_packet += 4;
+ packet_size += 4;
+
+ /*----------------------------------*/
+ /*| Window handling |*/
+ /*----------------------------------*/
+ /* Wnd = (1|1) */
+ tcp_hc_header |= 0x00C0;
+
+ /* Copy all bits of window size into buffer */
+ uint16_t cur_window = HTONS(full_tcp_header.window);
+ memcpy(current_tcp_packet, &cur_window, 2);
+ current_tcp_packet += 2;
+ packet_size += 2;
+
+ /* FIN flag */
+ if(IS_TCP_FIN(full_tcp_header.reserved_flags)) {
+ /* F = (1) */
+ tcp_hc_header |= 0x0008;
+ }
+
+ /* Copy checksum into buffer */
+ uint16_t cur_chk_sum = HTONS(full_tcp_header.checksum);
+ memcpy(current_tcp_packet, &cur_chk_sum, 2);
+ current_tcp_packet += 2;
+ packet_size += 2;
+
+ /* Copy TCP_HC Bytes into buffer */
+ uint16_t cur_tcp_hc_header = HTONS(tcp_hc_header);
+ memcpy(tcp_packet_begin, &cur_tcp_hc_header, 2);
+
+ /* Copy TCP_HC Context ID into buffer */
+ uint16_t cur_context_id = HTONS(tcp_context->context_id);
+ memcpy(tcp_packet_begin + 2, &cur_context_id, 2);
+
+ /* Move payload to end of tcp header */
+ memmove(current_tcp_packet, tcp_packet_begin + TCP_HDR_LEN,
+ payload_length);
+
+ /* Adding TCP payload length to TCP_HC header length */
+ packet_size += payload_length;
+
+ update_tcp_hc_context(false, current_socket, &full_tcp_header);
+ return packet_size;
+ }
+
+ return 0;
+}
socket_internal_t *decompress_tcp_packet(ipv6_hdr_t *temp_ipv6_header)
- {
- uint8_t *packet_buffer = ((uint8_t*)temp_ipv6_header)+IPV6_HDR_LEN;
- uint16_t tcp_hc_header;
- socket_internal_t *current_socket = NULL;
- uint16_t packet_size = 0;
-
- // Full header TCP segment
- if (*(((uint8_t *)temp_ipv6_header)+IPV6_HDR_LEN) == 0x01)
- {
- switch_tcp_packet_byte_order(((tcp_hdr_t *)(((uint8_t*)temp_ipv6_header)+IPV6_HDR_LEN+3)));
- current_socket = get_tcp_socket(temp_ipv6_header, ((tcp_hdr_t *)(((uint8_t*)temp_ipv6_header)+IPV6_HDR_LEN+3)));
- if (current_socket != NULL)
- {
- if (current_socket->socket_values.tcp_control.state == LISTEN)
- {
- memcpy(¤t_socket->socket_values.tcp_control.tcp_context.context_id, ((uint8_t *)temp_ipv6_header)+IPV6_HDR_LEN+1, 2);
- current_socket->socket_values.tcp_control.tcp_context.context_id = NTOHS(current_socket->socket_values.tcp_control.tcp_context.context_id);
- }
- memmove(((uint8_t *)temp_ipv6_header)+IPV6_HDR_LEN, (((uint8_t*)temp_ipv6_header)+IPV6_HDR_LEN+3), temp_ipv6_header->length-3);
- temp_ipv6_header->length -= 3;
- return current_socket;
- }
- else
- {
- printf("Socket Null!\n");
- // Found no matching socket for this packet -> Drop it
- return NULL;
- }
- }
- // Compressed header TCP segment
- else
- {
- // Temporary TCP Header
- tcp_hdr_t full_tcp_header;
- memset(&full_tcp_header, 0, sizeof(tcp_hdr_t));
-
- // Current context ID
- uint16_t current_context;
- memcpy(¤t_context, (packet_buffer+2), 2);
- current_context = NTOHS(current_context);
-
- // Copy TCP_HC header into local variable (1,0,0,1|SEQ,SEQ,0)(1,0,0,1|0,0,0,0)
- memcpy(&tcp_hc_header, packet_buffer, 2);
- tcp_hc_header = NTOHS(tcp_hc_header);
-
- uint8_t header_type = UNDEFINED;
- if (BITSET(tcp_hc_header, 15) && !BITSET(tcp_hc_header, 14) && !BITSET(tcp_hc_header, 13))
- {
- header_type = MOSTLY_COMPRESSED_HEADER;
- }
- else if (BITSET(tcp_hc_header, 15) && BITSET(tcp_hc_header, 14) && !BITSET(tcp_hc_header, 13))
- {
- header_type = COMPRESSED_HEADER;
- }
-
- // Setting pointer to first tcp_hc field
- packet_buffer += 4;
- packet_size += 4;
-
- // Current socket
- socket_internal_t *current_socket = get_tcp_socket_by_context(temp_ipv6_header, current_context);
-
- if (current_socket == NULL)
- {
- printf("Current Socket == NULL!\n");
- return NULL;
- }
-
- // Current TCP Context values
- tcp_hc_context_t *current_tcp_context = ¤t_socket->socket_values.tcp_control.tcp_context;
-
- /*----------------------------------*/
- /*| Sequence number handling |*/
- /*----------------------------------*/
- if (!BITSET(tcp_hc_header, 11) && !BITSET(tcp_hc_header, 10))
- {
- // Seq = (0|0), sequence number didn't change, copy old value
- memcpy(&full_tcp_header.seq_nr, ¤t_tcp_context->seq_rcv, 4);
- }
- // The 24 most significant bits haven't changed from previous packet
- else if (!BITSET(tcp_hc_header, 11) && BITSET(tcp_hc_header, 10))
- {
- // Seq = (0|1), copy 1 byte of tcp_hc packet and 3 bytes from previous packet
- full_tcp_header.seq_nr |= *packet_buffer;
- full_tcp_header.seq_nr |= ((current_tcp_context->seq_rcv)&0xFFFFFF00);
- packet_buffer += 1;
- packet_size += 1;
- }
- // If the 16 most significant bits haven't changed from previous packet
- else if (BITSET(tcp_hc_header, 11) && !BITSET(tcp_hc_header, 10))
- {
- // Seq = (1|0), copy 2 bytes of tcp_hc packet and 2 bytes from previous packet
- full_tcp_header.seq_nr |= NTOHS(*((uint16_t *)packet_buffer));
- full_tcp_header.seq_nr |= ((current_tcp_context->seq_rcv)&0xFFFF0000);
- packet_buffer += 2;
- packet_size += 2;
- }
- // Sending uncompressed sequence number
- else
- {
- // Seq = (1|1), copy 4 bytes of tcp_hc packet
- memcpy(&full_tcp_header.seq_nr, packet_buffer, 4);
- full_tcp_header.seq_nr = NTOHL(full_tcp_header.seq_nr);
- packet_buffer += 4;
- packet_size += 4;
- }
-
- /*----------------------------------*/
- /*| Acknowledgment number handling |*/
- /*----------------------------------*/
- if (!BITSET(tcp_hc_header, 9) && !BITSET(tcp_hc_header, 8))
- {
- // Ack = (0|0), acknowledgment number didn't change, copy old value
- memcpy(&full_tcp_header.ack_nr, ¤t_tcp_context->ack_rcv, 4);
- }
- // The 24 most significant bits haven't changed from previous packet
- else if (!BITSET(tcp_hc_header, 9) && BITSET(tcp_hc_header, 8))
- {
- // Ack = (0|1), copy 1 byte of tcp_hc packet and 3 bytes from previous packet
- full_tcp_header.ack_nr |= *packet_buffer;
- full_tcp_header.ack_nr |= ((current_tcp_context->ack_rcv)&0xFFFFFF00);
- packet_buffer += 1;
- packet_size += 1;
- SET_TCP_ACK(full_tcp_header.reserved_flags);
- }
- // If the 16 most significant bits haven't changed from previous packet
- else if (BITSET(tcp_hc_header, 9) && !BITSET(tcp_hc_header, 8))
- {
- // Ack = (1|0), copy 2 bytes of tcp_hc packet and 2 bytes from previous packet
- full_tcp_header.ack_nr |= NTOHS(*((uint16_t *)packet_buffer));
- full_tcp_header.ack_nr |= ((current_tcp_context->ack_rcv)&0xFFFF0000);
- packet_buffer += 2;
- packet_size += 2;
- SET_TCP_ACK(full_tcp_header.reserved_flags);
- }
- // Sending uncompressed acknowledgment number
- else
- {
- // Ack = (1|1), copy 4 bytes of tcp_hc packet
- memcpy(&full_tcp_header.ack_nr, packet_buffer, 4);
- full_tcp_header.ack_nr = NTOHL(full_tcp_header.ack_nr);
- packet_buffer += 4;
- packet_size += 4;
- if (header_type == COMPRESSED_HEADER)
- {
- SET_TCP_ACK(full_tcp_header.reserved_flags);
- }
- }
-
- /*----------------------------------*/
- /*| Window handling |*/
- /*----------------------------------*/
- if (!BITSET(tcp_hc_header, 7) && !BITSET(tcp_hc_header, 6))
- {
- // Wnd = (0|0), copy old value
- memcpy(&full_tcp_header.window, ¤t_tcp_context->wnd_rcv, 2);
- }
- // The 8 most significant bits haven't changed from previous packet
- else if (!BITSET(tcp_hc_header, 7) && BITSET(tcp_hc_header, 6))
- {
- // Wnd = (0|1), copy 1 byte of tcp_hc packet and 1 byte from previous packet
- full_tcp_header.window |= *packet_buffer;
- full_tcp_header.window |= ((current_tcp_context->wnd_rcv)&0xFF00);
- packet_buffer += 1;
- packet_size += 1;
- }
- // If the 8 less significant bits haven't changed from previous packet
- else if (BITSET(tcp_hc_header, 7) && !BITSET(tcp_hc_header, 6))
- {
- // Wnd = (1|0), copy 1 byte of tcp_hc packet and 1 byte from previous packet
- full_tcp_header.window |= ((*((uint16_t *)packet_buffer))&0xFF00);
- full_tcp_header.window |= ((current_tcp_context->wnd_rcv)&0x00FF);
- packet_buffer += 1;
- packet_size += 1;
- }
- // Sending uncompressed window size
- else
- {
- // Wnd = (1|1), copy 2 bytes of tcp_hc packet
- memcpy(&full_tcp_header.window, packet_buffer, 2);
- full_tcp_header.window = NTOHS(full_tcp_header.window);
- packet_buffer += 2;
- packet_size += 2;
- }
-
- // FIN flag
- if (BITSET(tcp_hc_header, 3))
- {
- // F = (1)
- if (IS_TCP_ACK(full_tcp_header.reserved_flags))
- {
- SET_TCP_FIN_ACK(full_tcp_header.reserved_flags);
- }
- else
- {
- SET_TCP_FIN(full_tcp_header.reserved_flags);
- }
- }
-
- // Copy checksum into into tcp header
- memcpy(&full_tcp_header.checksum, packet_buffer, 2);
- full_tcp_header.checksum = NTOHS(full_tcp_header.checksum);
- packet_buffer += 2;
- packet_size += 2;
-
- // Copy dest. and src. port into tcp header
- memcpy(&full_tcp_header.dst_port, ¤t_socket->socket_values.local_address.sin6_port, 2);
- memcpy(&full_tcp_header.src_port, ¤t_socket->socket_values.foreign_address.sin6_port, 2);
-
- // Ordinary TCP header length
- full_tcp_header.dataOffset_reserved = TCP_HDR_LEN/4;
-
- // Move payload to end of tcp header
- memmove(((uint8_t*)temp_ipv6_header)+IPV6_HDR_LEN+TCP_HDR_LEN, packet_buffer, temp_ipv6_header->length-packet_size);
-
- // Copy TCP uncompressed header in front of payload
- memcpy(((uint8_t*)temp_ipv6_header)+IPV6_HDR_LEN, &full_tcp_header, TCP_HDR_LEN);
-
- // Set IPV6 header length
- temp_ipv6_header->length = temp_ipv6_header->length - packet_size + TCP_HDR_LEN;
- return current_socket;
- }
- }
+{
+ uint8_t *packet_buffer = ((uint8_t *)temp_ipv6_header) + IPV6_HDR_LEN;
+ uint16_t tcp_hc_header;
+ socket_internal_t *current_socket = NULL;
+ uint16_t packet_size = 0;
+
+ /* Full header TCP segment */
+ if(*(((uint8_t *)temp_ipv6_header) + IPV6_HDR_LEN) == 0x01) {
+ switch_tcp_packet_byte_order(((tcp_hdr_t *)(((uint8_t *)temp_ipv6_header) +
+ IPV6_HDR_LEN + 3)));
+ current_socket = get_tcp_socket(temp_ipv6_header,
+ ((tcp_hdr_t *)(((uint8_t *)temp_ipv6_header) +
+ IPV6_HDR_LEN + 3)));
+
+ if(current_socket != NULL) {
+ if(current_socket->socket_values.tcp_control.state == LISTEN) {
+ memcpy(¤t_socket->socket_values.tcp_control.tcp_context.context_id,
+ ((uint8_t *)temp_ipv6_header) + IPV6_HDR_LEN + 1, 2);
+ current_socket->socket_values.tcp_control.tcp_context.context_id =
+ NTOHS(current_socket->socket_values.tcp_control.tcp_context.context_id);
+ }
+
+ memmove(((uint8_t *)temp_ipv6_header) + IPV6_HDR_LEN,
+ (((uint8_t *)temp_ipv6_header) + IPV6_HDR_LEN + 3),
+ temp_ipv6_header->length - 3);
+ temp_ipv6_header->length -= 3;
+ return current_socket;
+ }
+ else {
+ printf("Socket Null!\n");
+ /* Found no matching socket for this packet -> Drop it */
+ return NULL;
+ }
+ }
+ /* Compressed header TCP segment */
+ else {
+ /* Temporary TCP Header */
+ tcp_hdr_t full_tcp_header;
+ memset(&full_tcp_header, 0, sizeof(tcp_hdr_t));
+
+ /* Current context ID */
+ uint16_t current_context;
+ memcpy(¤t_context, (packet_buffer + 2), 2);
+ current_context = NTOHS(current_context);
+
+ /* Copy TCP_HC header into local variable
+ * (1,0,0,1|SEQ,SEQ,0)(1,0,0,1|0,0,0,0) */
+ memcpy(&tcp_hc_header, packet_buffer, 2);
+ tcp_hc_header = NTOHS(tcp_hc_header);
+
+ uint8_t header_type = UNDEFINED;
+
+ if(BITSET(tcp_hc_header, 15) && !BITSET(tcp_hc_header, 14) &&
+ !BITSET(tcp_hc_header, 13)) {
+ header_type = MOSTLY_COMPRESSED_HEADER;
+ }
+ else if(BITSET(tcp_hc_header, 15) && BITSET(tcp_hc_header, 14) &&
+ !BITSET(tcp_hc_header, 13)) {
+ header_type = COMPRESSED_HEADER;
+ }
+
+ /* Setting pointer to first tcp_hc field */
+ packet_buffer += 4;
+ packet_size += 4;
+
+ /* Current socket */
+ socket_internal_t *current_socket =
+ get_tcp_socket_by_context(temp_ipv6_header, current_context);
+
+ if(current_socket == NULL) {
+ printf("Current Socket == NULL!\n");
+ return NULL;
+ }
+
+ /* Current TCP Context values */
+ tcp_hc_context_t *current_tcp_context =
+ ¤t_socket->socket_values.tcp_control.tcp_context;
+
+ /*----------------------------------*/
+ /*| Sequence number handling |*/
+ /*----------------------------------*/
+ if(!BITSET(tcp_hc_header, 11) && !BITSET(tcp_hc_header, 10)) {
+ /* Seq = (0|0), sequence number didn't change, copy old value */
+ memcpy(&full_tcp_header.seq_nr, ¤t_tcp_context->seq_rcv, 4);
+ }
+ /* The 24 most significant bits haven't changed from previous packet */
+ else if(!BITSET(tcp_hc_header, 11) && BITSET(tcp_hc_header, 10)) {
+ /* Seq = (0|1), copy 1 byte of tcp_hc packet and 3 bytes from
+ * previous packet */
+ full_tcp_header.seq_nr |= *packet_buffer;
+ full_tcp_header.seq_nr |= ((current_tcp_context->seq_rcv) &
+ 0xFFFFFF00);
+ packet_buffer += 1;
+ packet_size += 1;
+ }
+ /* If the 16 most significant bits haven't changed from previous packet */
+ else if(BITSET(tcp_hc_header, 11) && !BITSET(tcp_hc_header, 10)) {
+ /* Seq = (1|0), copy 2 bytes of tcp_hc packet and 2 bytes from
+ * previous packet */
+ full_tcp_header.seq_nr |= NTOHS(*((uint16_t *)packet_buffer));
+ full_tcp_header.seq_nr |= ((current_tcp_context->seq_rcv) & 0xFFFF0000);
+ packet_buffer += 2;
+ packet_size += 2;
+ }
+ /* Sending uncompressed sequence number */
+ else {
+ /* Seq = (1|1), copy 4 bytes of tcp_hc packet */
+ memcpy(&full_tcp_header.seq_nr, packet_buffer, 4);
+ full_tcp_header.seq_nr = NTOHL(full_tcp_header.seq_nr);
+ packet_buffer += 4;
+ packet_size += 4;
+ }
+
+ /*----------------------------------*/
+ /*| Acknowledgment number handling |*/
+ /*----------------------------------*/
+ if(!BITSET(tcp_hc_header, 9) && !BITSET(tcp_hc_header, 8)) {
+ /* Ack = (0|0), acknowledgment number didn't change, copy old value */
+ memcpy(&full_tcp_header.ack_nr, ¤t_tcp_context->ack_rcv, 4);
+ }
+ /* The 24 most significant bits haven't changed from previous packet */
+ else if(!BITSET(tcp_hc_header, 9) && BITSET(tcp_hc_header, 8)) {
+ /* Ack = (0|1), copy 1 byte of tcp_hc packet and 3 bytes from
+ * previous packet */
+ full_tcp_header.ack_nr |= *packet_buffer;
+ full_tcp_header.ack_nr |= ((current_tcp_context->ack_rcv) & 0xFFFFFF00);
+ packet_buffer += 1;
+ packet_size += 1;
+ SET_TCP_ACK(full_tcp_header.reserved_flags);
+ }
+ /* If the 16 most significant bits haven't changed from previous packet */
+ else if(BITSET(tcp_hc_header, 9) && !BITSET(tcp_hc_header, 8)) {
+ /* Ack = (1|0), copy 2 bytes of tcp_hc packet and 2 bytes from
+ * previous packet */
+ full_tcp_header.ack_nr |= NTOHS(*((uint16_t *)packet_buffer));
+ full_tcp_header.ack_nr |= ((current_tcp_context->ack_rcv) & 0xFFFF0000);
+ packet_buffer += 2;
+ packet_size += 2;
+ SET_TCP_ACK(full_tcp_header.reserved_flags);
+ }
+ /* Sending uncompressed acknowledgment number */
+ else {
+ /* Ack = (1|1), copy 4 bytes of tcp_hc packet */
+ memcpy(&full_tcp_header.ack_nr, packet_buffer, 4);
+ full_tcp_header.ack_nr = NTOHL(full_tcp_header.ack_nr);
+ packet_buffer += 4;
+ packet_size += 4;
+
+ if(header_type == COMPRESSED_HEADER) {
+ SET_TCP_ACK(full_tcp_header.reserved_flags);
+ }
+ }
+
+ /*----------------------------------*/
+ /*| Window handling |*/
+ /*----------------------------------*/
+ if(!BITSET(tcp_hc_header, 7) && !BITSET(tcp_hc_header, 6)) {
+ /* Wnd = (0|0), copy old value */
+ memcpy(&full_tcp_header.window, ¤t_tcp_context->wnd_rcv, 2);
+ }
+ /* The 8 most significant bits haven't changed from previous packet */
+ else if(!BITSET(tcp_hc_header, 7) && BITSET(tcp_hc_header, 6)) {
+ /* Wnd = (0|1), copy 1 byte of tcp_hc packet and 1 byte from
+ * previous packet */
+ full_tcp_header.window |= *packet_buffer;
+ full_tcp_header.window |= ((current_tcp_context->wnd_rcv) & 0xFF00);
+ packet_buffer += 1;
+ packet_size += 1;
+ }
+ /* If the 8 less significant bits haven't changed from previous packet */
+ else if(BITSET(tcp_hc_header, 7) && !BITSET(tcp_hc_header, 6)) {
+ /* Wnd = (1|0), copy 1 byte of tcp_hc packet and 1 byte from previous packet */
+ full_tcp_header.window |= ((*((uint16_t *)packet_buffer)) & 0xFF00);
+ full_tcp_header.window |= ((current_tcp_context->wnd_rcv) & 0x00FF);
+ packet_buffer += 1;
+ packet_size += 1;
+ }
+ /* Sending uncompressed window size */
+ else {
+ /* Wnd = (1|1), copy 2 bytes of tcp_hc packet */
+ memcpy(&full_tcp_header.window, packet_buffer, 2);
+ full_tcp_header.window = NTOHS(full_tcp_header.window);
+ packet_buffer += 2;
+ packet_size += 2;
+ }
+
+ /* FIN flag */
+ if(BITSET(tcp_hc_header, 3)) {
+ /* F = (1) */
+ if(IS_TCP_ACK(full_tcp_header.reserved_flags)) {
+ SET_TCP_FIN_ACK(full_tcp_header.reserved_flags);
+ }
+ else {
+ SET_TCP_FIN(full_tcp_header.reserved_flags);
+ }
+ }
+
+ /* Copy checksum into into tcp header */
+ memcpy(&full_tcp_header.checksum, packet_buffer, 2);
+ full_tcp_header.checksum = NTOHS(full_tcp_header.checksum);
+ packet_buffer += 2;
+ packet_size += 2;
+
+ /* Copy dest. and src. port into tcp header */
+ memcpy(&full_tcp_header.dst_port,
+ ¤t_socket->socket_values.local_address.sin6_port, 2);
+ memcpy(&full_tcp_header.src_port,
+ ¤t_socket->socket_values.foreign_address.sin6_port, 2);
+
+ /* Ordinary TCP header length */
+ full_tcp_header.dataOffset_reserved = TCP_HDR_LEN / 4;
+
+ /* Move payload to end of tcp header */
+ memmove(((uint8_t *)temp_ipv6_header) + IPV6_HDR_LEN + TCP_HDR_LEN,
+ packet_buffer, temp_ipv6_header->length - packet_size);
+
+ /* Copy TCP uncompressed header in front of payload */
+ memcpy(((uint8_t *)temp_ipv6_header) + IPV6_HDR_LEN, &full_tcp_header,
+ TCP_HDR_LEN);
+
+ /* Set IPV6 header length */
+ temp_ipv6_header->length = temp_ipv6_header->length - packet_size +
+ TCP_HDR_LEN;
+ return current_socket;
+ }
+}
#endif
diff --git a/sys/net/destiny/tcp_timer.c b/sys/net/destiny/tcp_timer.c
index 986017764b882aef8af3d09a26aff02e3d51a101..0ff442aa347afb3a3f87c13ddacb5a8590f6b1f3 100644
--- a/sys/net/destiny/tcp_timer.c
+++ b/sys/net/destiny/tcp_timer.c
@@ -1,10 +1,21 @@
-/*
- * tcp_timer.c
+/**
+ * Destiny TCP timer implementation
*
- * Created on: 21.01.2012
- * Author: Oliver
+ * Copyright (C) 2013 INRIA.
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup destiny
+ * @{
+ * @file tcp_timer.c
+ * @brief TCP timer
+ * @author Oliver Gesch <oliver.gesch@googlemail.com>
+ * @}
*/
+
#include <thread.h>
#include <stdio.h>
#include <string.h>
@@ -19,135 +30,127 @@
#include "../sixlowpan/sixlowpan.h"
void handle_synchro_timeout(socket_internal_t *current_socket)
- {
- msg_t send;
- if (thread_getstatus(current_socket->recv_pid) == STATUS_RECEIVE_BLOCKED)
- {
- timex_t now;
- vtimer_now(&now);
- if ((current_socket->socket_values.tcp_control.no_of_retries == 0) &&
- (timex_sub(now, current_socket->socket_values.tcp_control.last_packet_time).microseconds >
- TCP_SYN_INITIAL_TIMEOUT))
- {
- current_socket->socket_values.tcp_control.no_of_retries++;
- net_msg_send(&send, current_socket->recv_pid, 0, TCP_RETRY);
-// printf("FIRST RETRY!\n");
- }
- else if ((current_socket->socket_values.tcp_control.no_of_retries > 0) &&
- (timex_sub(now, current_socket->socket_values.tcp_control.last_packet_time).microseconds >
- (current_socket->socket_values.tcp_control.no_of_retries * TCP_SYN_TIMEOUT + TCP_SYN_INITIAL_TIMEOUT)))
- {
- current_socket->socket_values.tcp_control.no_of_retries++;
- if (current_socket->socket_values.tcp_control.no_of_retries > TCP_MAX_SYN_RETRIES)
- {
- net_msg_send(&send, current_socket->recv_pid, 0, TCP_TIMEOUT);
-// printf("TCP SYN TIMEOUT!!\n");
- }
- else
- {
- net_msg_send(&send, current_socket->recv_pid, 0, TCP_RETRY);
-// printf("NEXT RETRY!\n");
- }
- }
- }
- }
+{
+ msg_t send;
+
+ if(thread_getstatus(current_socket->recv_pid) == STATUS_RECEIVE_BLOCKED) {
+ timex_t now;
+ vtimer_now(&now);
+
+ if((current_socket->socket_values.tcp_control.no_of_retries == 0) &&
+ (timex_sub(now,
+ current_socket->socket_values.tcp_control.last_packet_time).microseconds >
+ TCP_SYN_INITIAL_TIMEOUT)) {
+ current_socket->socket_values.tcp_control.no_of_retries++;
+ net_msg_send(&send, current_socket->recv_pid, 0, TCP_RETRY);
+ }
+ else if((current_socket->socket_values.tcp_control.no_of_retries > 0) &&
+ (timex_sub(now,
+ current_socket->socket_values.tcp_control.last_packet_time).microseconds >
+ (current_socket->socket_values.tcp_control.no_of_retries *
+ TCP_SYN_TIMEOUT + TCP_SYN_INITIAL_TIMEOUT))) {
+ current_socket->socket_values.tcp_control.no_of_retries++;
+
+ if(current_socket->socket_values.tcp_control.no_of_retries >
+ TCP_MAX_SYN_RETRIES) {
+ net_msg_send(&send, current_socket->recv_pid, 0, TCP_TIMEOUT);
+ }
+ else {
+ net_msg_send(&send, current_socket->recv_pid, 0, TCP_RETRY);
+ }
+ }
+ }
+}
void handle_established(socket_internal_t *current_socket)
- {
- msg_t send;
- double current_timeout = current_socket->socket_values.tcp_control.rto;
- if (current_timeout < SECOND)
- {
- current_timeout = SECOND;
- }
- uint8_t i;
- if ((current_socket->socket_values.tcp_control.send_nxt > current_socket->socket_values.tcp_control.send_una) &&
- (thread_getstatus(current_socket->send_pid) == STATUS_RECEIVE_BLOCKED))
- {
- for(i = 0; i < current_socket->socket_values.tcp_control.no_of_retries; i++)
- {
- current_timeout *= 2;
- }
- timex_t now;
- vtimer_now(&now);
- if (current_timeout > TCP_ACK_MAX_TIMEOUT)
- {
- net_msg_send(&send, current_socket->send_pid, 0, TCP_TIMEOUT);
-// printf("GOT NO ACK: TIMEOUT!\n");
- }
- else if (timex_sub(now, current_socket->socket_values.tcp_control.last_packet_time).microseconds >
- current_timeout)
- {
-// printReasBuffers();
- current_socket->socket_values.tcp_control.no_of_retries++;
- net_msg_send(&send, current_socket->send_pid, 0, TCP_RETRY);
-// printf("GOT NO ACK YET, %i. RETRY! Now: %lu Before: %lu, Diff: %lu, Cur Timeout: %f\n", current_socket->socket_values.tcp_control.no_of_retries,
-// now.microseconds, current_socket->socket_values.tcp_control.last_packet_time.microseconds,
-// now.microseconds - current_socket->socket_values.tcp_control.last_packet_time.microseconds,
-// current_timeout);
- }
- }
- }
+{
+ msg_t send;
+ double current_timeout = current_socket->socket_values.tcp_control.rto;
+
+ if(current_timeout < SECOND) {
+ current_timeout = SECOND;
+ }
+
+ uint8_t i;
+
+ if((current_socket->socket_values.tcp_control.send_nxt >
+ current_socket->socket_values.tcp_control.send_una) &&
+ (thread_getstatus(current_socket->send_pid) == STATUS_RECEIVE_BLOCKED)) {
+ for(i = 0; i < current_socket->socket_values.tcp_control.no_of_retries;
+ i++) {
+ current_timeout *= 2;
+ }
+
+ timex_t now;
+ vtimer_now(&now);
+
+ if(current_timeout > TCP_ACK_MAX_TIMEOUT) {
+ net_msg_send(&send, current_socket->send_pid, 0, TCP_TIMEOUT);
+ }
+ else if(timex_sub(now, current_socket->socket_values.tcp_control.last_packet_time).microseconds >
+ current_timeout) {
+ current_socket->socket_values.tcp_control.no_of_retries++;
+ net_msg_send(&send, current_socket->send_pid, 0, TCP_RETRY);
+ }
+ }
+}
void check_sockets(void)
- {
- socket_internal_t *current_socket;
- uint8_t i = 1;
- while (i < MAX_SOCKETS+1)
- {
- current_socket = getSocket(i);
-
- if(isTCPSocket(i))
- {
- switch (current_socket->socket_values.tcp_control.state)
- {
- case ESTABLISHED:
- {
- handle_established(current_socket);
- break;
- }
- case SYN_SENT:
- {
- handle_synchro_timeout(current_socket);
- break;
- }
- case SYN_RCVD:
- {
- handle_synchro_timeout(current_socket);
- break;
- }
- default:
- {
- break;
- }
- }
- }
- i++;
- }
- }
+{
+ socket_internal_t *current_socket;
+ uint8_t i = 1;
+
+ while(i < MAX_SOCKETS + 1) {
+ current_socket = getSocket(i);
+
+ if(isTCPSocket(i)) {
+ switch(current_socket->socket_values.tcp_control.state) {
+ case ESTABLISHED: {
+ handle_established(current_socket);
+ break;
+ }
+
+ case SYN_SENT: {
+ handle_synchro_timeout(current_socket);
+ break;
+ }
+
+ case SYN_RCVD: {
+ handle_synchro_timeout(current_socket);
+ break;
+ }
+
+ default: {
+ break;
+ }
+ }
+ }
+
+ i++;
+ }
+}
void inc_global_variables(void)
- {
- mutex_lock(&global_sequence_clunter_mutex);
- global_sequence_counter += rand();
- mutex_unlock(&global_sequence_clunter_mutex, 0);
+{
+ mutex_lock(&global_sequence_clunter_mutex);
+ global_sequence_counter += rand();
+ mutex_unlock(&global_sequence_clunter_mutex, 0);
#ifdef TCP_HC
- mutex_lock(&global_context_counter_mutex);
- global_context_counter += rand();
- mutex_unlock(&global_context_counter_mutex, 0);
+ mutex_lock(&global_context_counter_mutex);
+ global_context_counter += rand();
+ mutex_unlock(&global_context_counter_mutex, 0);
#endif
- }
+}
void tcp_general_timer(void)
- {
- vtimer_t tcp_vtimer;
- timex_t interval = timex_set(0, TCP_TIMER_RESOLUTION);
-
- while (1)
- {
- inc_global_variables();
- check_sockets();
- vtimer_set_wakeup(&tcp_vtimer, interval, thread_getpid());
- thread_sleep();
- }
- }
+{
+ vtimer_t tcp_vtimer;
+ timex_t interval = timex_set(0, TCP_TIMER_RESOLUTION);
+
+ while(1) {
+ inc_global_variables();
+ check_sockets();
+ vtimer_set_wakeup(&tcp_vtimer, interval, thread_getpid());
+ thread_sleep();
+ }
+}
diff --git a/sys/net/destiny/udp.c b/sys/net/destiny/udp.c
index b96738e2c814bebcc0c1fc565f06a5a84ebeb5e5..18fac61b3068f8c3031fb5e40e2627f896475eb2 100644
--- a/sys/net/destiny/udp.c
+++ b/sys/net/destiny/udp.c
@@ -1,3 +1,20 @@
+/**
+ * Destiny UDP implementation
+ *
+ * Copyright (C) 2013 INRIA.
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup destiny
+ * @{
+ * @file udp.c
+ * @brief UDP implementation
+ * @author Oliver Gesch <oliver.gesch@googlemail.com>
+ * @}
+ */
+
#include <stdio.h>
#include <thread.h>
@@ -13,53 +30,48 @@
#include "../net_help/msg_help.h"
uint16_t udp_csum(ipv6_hdr_t *ipv6_header, udp_hdr_t *udp_header)
- {
+{
uint16_t sum;
uint16_t len = udp_header->length;
- sum = len + IPPROTO_UDP;
- sum = csum(sum, (uint8_t *)&ipv6_header->srcaddr, 2 * sizeof(ipv6_addr_t));
- sum = csum(sum, (uint8_t*)udp_header, len);
+ sum = len + IPPROTO_UDP;
+ sum = csum(sum, (uint8_t *)&ipv6_header->srcaddr, 2 * sizeof(ipv6_addr_t));
+ sum = csum(sum, (uint8_t *)udp_header, len);
return (sum == 0) ? 0xffff : HTONS(sum);
- }
+}
void udp_packet_handler(void)
- {
- msg_t m_recv_ip, m_send_ip, m_recv_udp, m_send_udp;
- ipv6_hdr_t *ipv6_header;
- udp_hdr_t *udp_header;
- uint8_t *payload;
- socket_internal_t *udp_socket = NULL;
- uint16_t chksum;
+{
+ msg_t m_recv_ip, m_send_ip, m_recv_udp, m_send_udp;
+ ipv6_hdr_t *ipv6_header;
+ udp_hdr_t *udp_header;
+ uint8_t *payload;
+ socket_internal_t *udp_socket = NULL;
+ uint16_t chksum;
- while (1)
- {
- msg_receive(&m_recv_ip);
- ipv6_header = ((ipv6_hdr_t*)m_recv_ip.content.ptr);
- udp_header = ((udp_hdr_t*)(m_recv_ip.content.ptr + IPV6_HDR_LEN));
- payload = (uint8_t*)(m_recv_ip.content.ptr + IPV6_HDR_LEN + UDP_HDR_LEN);
+ while(1) {
+ msg_receive(&m_recv_ip);
+ ipv6_header = ((ipv6_hdr_t *)m_recv_ip.content.ptr);
+ udp_header = ((udp_hdr_t *)(m_recv_ip.content.ptr + IPV6_HDR_LEN));
+ payload = (uint8_t *)(m_recv_ip.content.ptr + IPV6_HDR_LEN + UDP_HDR_LEN);
- chksum = udp_csum(ipv6_header, udp_header);
+ chksum = udp_csum(ipv6_header, udp_header);
- if (chksum == 0xffff)
- {
- udp_socket = get_udp_socket(ipv6_header, udp_header);
- if (udp_socket != NULL)
- {
- m_send_udp.content.ptr = (char*)ipv6_header;
- msg_send_receive(&m_send_udp, &m_recv_udp, udp_socket->recv_pid);
- }
- else
- {
- printf("Dropped UDP Message because no thread ID was found for delivery!\n");
- }
- }
- else
- {
- printf("Wrong checksum (%x)!\n", chksum);
- }
- msg_reply(&m_recv_ip, &m_send_ip);
- }
- }
+ if(chksum == 0xffff) {
+ udp_socket = get_udp_socket(ipv6_header, udp_header);
+ if(udp_socket != NULL) {
+ m_send_udp.content.ptr = (char *)ipv6_header;
+ msg_send_receive(&m_send_udp, &m_recv_udp, udp_socket->recv_pid);
+ }
+ else {
+ printf("Dropped UDP Message because no thread ID was found for delivery!\n");
+ }
+ }
+ else {
+ printf("Wrong checksum (%x)!\n", chksum);
+ }
+ msg_reply(&m_recv_ip, &m_send_ip);
+ }
+}
diff --git a/sys/net/destiny/udp.h b/sys/net/destiny/udp.h
index 5a232ab1fa76b520e218cbef7149fff967df4823..ba581ba28e2166279055ed497acf8eea6d36c346 100644
--- a/sys/net/destiny/udp.h
+++ b/sys/net/destiny/udp.h
@@ -1,3 +1,20 @@
+/**
+ * Destiny TCP header
+ *
+ * Copyright (C) 2013 INRIA.
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup destiny
+ * @{
+ * @file udp.c
+ * @brief UDP data structs and prototypes
+ * @author Oliver Gesch <oliver.gesch@googlemail.com>
+ * @}
+ */
+
/*
* udp.h
*
@@ -14,7 +31,7 @@
#include "../sixlowpan/sixlowip.h"
-typedef struct __attribute__ ((packed)) udp_h_t{
+typedef struct __attribute__((packed)) udp_h_t {
uint16_t src_port;
uint16_t dst_port;
uint16_t length;
diff --git a/sys/net/net_help/inet_ntop.c b/sys/net/net_help/inet_ntop.c
index d72e8a0aaf88c9b4007ad345a96734016777a029..db05d87479ce111e2b7174c318625067e0557006 100644
--- a/sys/net/net_help/inet_ntop.c
+++ b/sys/net/net_help/inet_ntop.c
@@ -33,34 +33,38 @@
* author:
* Paul Vixie, 1996.
*/
-static const char *
-inet_ntop4(const unsigned char *src, char *dst, size_t size)
+static const char *inet_ntop4(const unsigned char *src, char *dst, size_t size)
{
- const size_t MIN_SIZE = 16; /* space for 255.255.255.255\0 */
- int n = 0;
- char *next = dst;
-
- if (size < MIN_SIZE) {
- return NULL;
- }
- do {
- unsigned char u = *src++;
- if (u > 99) {
- *next++ = '0' + u/100;
- u %= 100;
- *next++ = '0' + u/10;
- u %= 10;
- }
- else if (u > 9) {
- *next++ = '0' + u/10;
- u %= 10;
- }
- *next++ = '0' + u;
- *next++ = '.';
- n++;
- } while (n < 4);
- *--next = 0;
- return dst;
+ const size_t MIN_SIZE = 16; /* space for 255.255.255.255\0 */
+ int n = 0;
+ char *next = dst;
+
+ if(size < MIN_SIZE) {
+ return NULL;
+ }
+
+ do {
+ unsigned char u = *src++;
+
+ if(u > 99) {
+ *next++ = '0' + u / 100;
+ u %= 100;
+ *next++ = '0' + u / 10;
+ u %= 10;
+ }
+ else if(u > 9) {
+ *next++ = '0' + u / 10;
+ u %= 10;
+ }
+
+ *next++ = '0' + u;
+ *next++ = '.';
+ n++;
+ }
+ while(n < 4);
+
+ *--next = 0;
+ return dst;
}
/* const char *
@@ -69,8 +73,7 @@ inet_ntop4(const unsigned char *src, char *dst, size_t size)
* author:
* Paul Vixie, 1996.
*/
-static const char *
-inet_ntop6(const unsigned char *src, char *dst, size_t size)
+static const char *inet_ntop6(const unsigned char *src, char *dst, size_t size)
{
/*
* Note that int32_t and int16_t need only be "at least" large enough
@@ -80,7 +83,9 @@ inet_ntop6(const unsigned char *src, char *dst, size_t size)
* to use pointer overlays. All the world's not a VAX.
*/
char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp;
- struct { int base, len; } best = {-1, 0}, cur = {-1, 0};
+ struct {
+ int base, len;
+ } best = { -1, 0}, cur = { -1, 0};
unsigned int words[IN6ADDRSZ / INT16SZ];
int i;
const unsigned char *next_src, *src_end;
@@ -95,38 +100,43 @@ inet_ntop6(const unsigned char *src, char *dst, size_t size)
src_end = src + IN6ADDRSZ;
next_dest = words;
i = 0;
+
do {
- unsigned int next_word = (unsigned int)*next_src++;
+ unsigned int next_word = (unsigned int) *next_src++;
next_word <<= 8;
- next_word |= (unsigned int)*next_src++;
+ next_word |= (unsigned int) *next_src++;
*next_dest++ = next_word;
- if (next_word == 0) {
- if (cur.base == -1) {
+ if(next_word == 0) {
+ if(cur.base == -1) {
cur.base = i;
cur.len = 1;
}
else {
cur.len++;
}
- } else {
- if (cur.base != -1) {
- if (best.base == -1 || cur.len > best.len) {
+ }
+ else {
+ if(cur.base != -1) {
+ if(best.base == -1 || cur.len > best.len) {
best = cur;
}
+
cur.base = -1;
}
}
i++;
- } while (next_src < src_end);
+ }
+ while(next_src < src_end);
- if (cur.base != -1) {
- if (best.base == -1 || cur.len > best.len) {
+ if(cur.base != -1) {
+ if(best.base == -1 || cur.len > best.len) {
best = cur;
}
}
- if (best.base != -1 && best.len < 2) {
+
+ if(best.base != -1 && best.len < 2) {
best.base = -1;
}
@@ -134,41 +144,49 @@ inet_ntop6(const unsigned char *src, char *dst, size_t size)
* Format the result.
*/
tp = tmp;
- for (i = 0; i < (IN6ADDRSZ / INT16SZ);) {
+
+ for(i = 0; i < (IN6ADDRSZ / INT16SZ);) {
/* Are we inside the best run of 0x00's? */
- if (i == best.base) {
+ if(i == best.base) {
*tp++ = ':';
i += best.len;
continue;
}
+
/* Are we following an initial run of 0x00s or any real hex? */
- if (i != 0) {
+ if(i != 0) {
*tp++ = ':';
}
+
/* Is this address an encapsulated IPv4? */
- if (i == 6 && best.base == 0 &&
- (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) {
- if (!inet_ntop4(src+12, tp, sizeof tmp - (tp - tmp))) {
+ if(i == 6 && best.base == 0 &&
+ (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) {
+ if(!inet_ntop4(src + 12, tp, sizeof tmp - (tp - tmp))) {
return (NULL);
}
+
tp += strlen(tp);
break;
}
+
tp += snprintf(tp, sizeof tmp - (tp - tmp), "%x", words[i]);
i++;
}
+
/* Was it a trailing run of 0x00's? */
- if (best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ)) {
+ if(best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ)) {
*tp++ = ':';
}
+
*tp++ = '\0';
/*
* Check for overflow, copy, and we're done.
*/
- if ((size_t)(tp - tmp) > size) {
+ if((size_t)(tp - tmp) > size) {
return (NULL);
}
+
strcpy(dst, tmp);
return (dst);
}
@@ -181,16 +199,18 @@ inet_ntop6(const unsigned char *src, char *dst, size_t size)
* author:
* Paul Vixie, 1996.
*/
-const char *
-inet_ntop(int af, const void *src, char *dst, size_t size)
+const char *inet_ntop(int af, const void *src, char *dst, size_t size)
{
- switch (af) {
- case AF_INET:
- return (inet_ntop4(src, dst, size));
- case AF_INET6:
- return (inet_ntop6(src, dst, size));
- default:
- return (NULL);
- }
- /* NOTREACHED */
+ switch(af) {
+ case AF_INET:
+ return (inet_ntop4(src, dst, size));
+
+ case AF_INET6:
+ return (inet_ntop6(src, dst, size));
+
+ default:
+ return (NULL);
+ }
+
+ /* NOTREACHED */
}
diff --git a/sys/net/net_help/inet_ntop.h b/sys/net/net_help/inet_ntop.h
index 281f1ffa9bc73aed7f910f6615ab26e3a3823354..2e94fa4bf52ec5c53923893bdde52036e86755d9 100644
--- a/sys/net/net_help/inet_ntop.h
+++ b/sys/net/net_help/inet_ntop.h
@@ -18,6 +18,6 @@
* sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
*/
-const char *inet_ntop (int af, const void *src, char *dst, size_t size);
+const char *inet_ntop(int af, const void *src, char *dst, size_t size);
#endif /* INET_NTOP_H_ */
diff --git a/sys/net/net_help/inet_pton.c b/sys/net/net_help/inet_pton.c
index cbf1193dd5aea7acc1ec43d78827106f59f6952b..59b6adf2570d1a561b76ceee9cbe8dd5c44acf77 100644
--- a/sys/net/net_help/inet_pton.c
+++ b/sys/net/net_help/inet_pton.c
@@ -17,9 +17,9 @@
#include <stdio.h>
#include <string.h>
#include <stdint.h>
-
+
#include "sys/net/destiny/socket.h"
-
+
#include "inet_pton.h"
/* int
@@ -32,8 +32,7 @@
* author:
* Paul Vixie, 1996.
*/
-static int
-inet_pton4(const char *src, unsigned char *dst)
+static int inet_pton4(const char *src, unsigned char *dst)
{
static const char digits[] = "0123456789";
int saw_digit, octets, ch;
@@ -42,30 +41,43 @@ inet_pton4(const char *src, unsigned char *dst)
saw_digit = 0;
octets = 0;
*(tp = tmp) = 0;
- while ((ch = *src++) != '\0') {
- const char *pch;
-
- if ((pch = strchr(digits, ch)) != NULL) {
- unsigned int new = *tp * 10 + (unsigned int)(pch - digits);
-
- if (new > 255)
- return (0);
- *tp = new;
- if (! saw_digit) {
- if (++octets > 4)
- return (0);
- saw_digit = 1;
- }
- } else if (ch == '.' && saw_digit) {
- if (octets == 4)
- return (0);
- *++tp = 0;
- saw_digit = 0;
- } else
- return (0);
+
+ while((ch = *src++) != '\0') {
+ const char *pch;
+
+ if((pch = strchr(digits, ch)) != NULL) {
+ unsigned int new = *tp * 10 + (unsigned int)(pch - digits);
+
+ if(new > 255) {
+ return (0);
+ }
+
+ *tp = new;
+
+ if(! saw_digit) {
+ if(++octets > 4) {
+ return (0);
+ }
+
+ saw_digit = 1;
+ }
+ }
+ else if(ch == '.' && saw_digit) {
+ if(octets == 4) {
+ return (0);
+ }
+
+ *++tp = 0;
+ saw_digit = 0;
+ }
+ else {
+ return (0);
+ }
+ }
+
+ if(octets < 4) {
+ return (0);
}
- if (octets < 4)
- return (0);
memcpy(dst, tmp, INADDRSZ);
return (1);
@@ -84,87 +96,112 @@ inet_pton4(const char *src, unsigned char *dst)
* author:
* Paul Vixie, 1996.
*/
-static int
-inet_pton6(const char *src, unsigned char *dst)
+static int inet_pton6(const char *src, unsigned char *dst)
{
- static const char xdigits_l[] = "0123456789abcdef",
- xdigits_u[] = "0123456789ABCDEF";
- unsigned char tmp[IN6ADDRSZ], *tp, *endp, *colonp;
- const char *xdigits, *curtok;
- int ch, saw_xdigit;
- unsigned int val;
-
- memset((tp = tmp), '\0', IN6ADDRSZ);
- endp = tp + IN6ADDRSZ;
- colonp = NULL;
- /* Leading :: requires some special handling. */
- if (*src == ':')
- if (*++src != ':')
- return (0);
- curtok = src;
- saw_xdigit = 0;
- val = 0;
- while ((ch = *src++) != '\0') {
- const char *pch;
-
- if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
- pch = strchr((xdigits = xdigits_u), ch);
- if (pch != NULL) {
- val <<= 4;
- val |= (pch - xdigits);
- if (val > 0xffff)
- return (0);
- saw_xdigit = 1;
- continue;
- }
- if (ch == ':') {
- curtok = src;
- if (!saw_xdigit) {
- if (colonp)
- return (0);
- colonp = tp;
- continue;
- }
- if (tp + INT16SZ > endp)
- return (0);
- *tp++ = (unsigned char) (val >> 8) & 0xff;
- *tp++ = (unsigned char) val & 0xff;
- saw_xdigit = 0;
- val = 0;
- continue;
- }
- if (ch == '.' && ((tp + INADDRSZ) <= endp) &&
- inet_pton4(curtok, tp) > 0) {
- tp += INADDRSZ;
- saw_xdigit = 0;
- break; /* '\0' was seen by inet_pton4(). */
- }
- return (0);
- }
- if (saw_xdigit) {
- if (tp + INT16SZ > endp)
- return (0);
- *tp++ = (unsigned char) (val >> 8) & 0xff;
- *tp++ = (unsigned char) val & 0xff;
- }
- if (colonp != NULL) {
- /*
- * Since some memmove()'s erroneously fail to handle
- * overlapping regions, we'll do the shift by hand.
- */
- const ssize_t n = tp - colonp;
- ssize_t i;
-
- for (i = 1; i <= n; i++) {
- endp[- i] = colonp[n - i];
- colonp[n - i] = 0;
- }
- tp = endp;
- }
- if (tp != endp)
- return (0);
- memcpy(dst, tmp, IN6ADDRSZ);
- return (1);
+ static const char xdigits_l[] = "0123456789abcdef",
+ xdigits_u[] = "0123456789ABCDEF";
+ unsigned char tmp[IN6ADDRSZ], *tp, *endp, *colonp;
+ const char *xdigits, *curtok;
+ int ch, saw_xdigit;
+ unsigned int val;
+
+ memset((tp = tmp), '\0', IN6ADDRSZ);
+ endp = tp + IN6ADDRSZ;
+ colonp = NULL;
+
+ /* Leading :: requires some special handling. */
+ if(*src == ':')
+ if(*++src != ':') {
+ return (0);
+ }
+
+ curtok = src;
+ saw_xdigit = 0;
+ val = 0;
+
+ while((ch = *src++) != '\0') {
+ const char *pch;
+
+ if((pch = strchr((xdigits = xdigits_l), ch)) == NULL) {
+ pch = strchr((xdigits = xdigits_u), ch);
+ }
+
+ if(pch != NULL) {
+ val <<= 4;
+ val |= (pch - xdigits);
+
+ if(val > 0xffff) {
+ return (0);
+ }
+
+ saw_xdigit = 1;
+ continue;
+ }
+
+ if(ch == ':') {
+ curtok = src;
+
+ if(!saw_xdigit) {
+ if(colonp) {
+ return (0);
+ }
+
+ colonp = tp;
+ continue;
+ }
+
+ if(tp + INT16SZ > endp) {
+ return (0);
+ }
+
+ *tp++ = (unsigned char)(val >> 8) & 0xff;
+ *tp++ = (unsigned char) val & 0xff;
+ saw_xdigit = 0;
+ val = 0;
+ continue;
+ }
+
+ if(ch == '.' && ((tp + INADDRSZ) <= endp) &&
+ inet_pton4(curtok, tp) > 0) {
+ tp += INADDRSZ;
+ saw_xdigit = 0;
+ break; /* '\0' was seen by inet_pton4(). */
+ }
+
+ return (0);
+ }
+
+ if(saw_xdigit) {
+ if(tp + INT16SZ > endp) {
+ return (0);
+ }
+
+ *tp++ = (unsigned char)(val >> 8) & 0xff;
+ *tp++ = (unsigned char) val & 0xff;
+ }
+
+ if(colonp != NULL) {
+ /*
+ * Since some memmove()'s erroneously fail to handle
+ * overlapping regions, we'll do the shift by hand.
+ */
+ const ssize_t n = tp - colonp;
+ ssize_t i;
+
+ for(i = 1; i <= n; i++) {
+ endp[- i] = colonp[n - i];
+ colonp[n - i] = 0;
+ }
+
+ tp = endp;
+ }
+
+ if(tp != endp) {
+ return (0);
+ }
+
+ memcpy(dst, tmp, IN6ADDRSZ);
+ return (1);
}
/* int
@@ -178,16 +215,18 @@ inet_pton6(const char *src, unsigned char *dst)
* author:
* Paul Vixie, 1996.
*/
-int
-inet_pton(int af, const char *src, void *dst)
+int inet_pton(int af, const char *src, void *dst)
{
- switch (af) {
- case AF_INET:
- return (inet_pton4(src, dst));
- case AF_INET6:
- return (inet_pton6(src, dst));
- default:
- return (-1);
- }
- /* NOTREACHED */
+ switch(af) {
+ case AF_INET:
+ return (inet_pton4(src, dst));
+
+ case AF_INET6:
+ return (inet_pton6(src, dst));
+
+ default:
+ return (-1);
+ }
+
+ /* NOTREACHED */
}
diff --git a/sys/net/net_help/msg_help.c b/sys/net/net_help/msg_help.c
index 89d6fd518ffdc0baabb7896551dd2e34012cc238..c490ec738bf16f36bacd493f83d386fb28e5cc7c 100644
--- a/sys/net/net_help/msg_help.c
+++ b/sys/net/net_help/msg_help.c
@@ -11,34 +11,34 @@
#include "sys/net/destiny/tcp_timer.h"
void block_continue_thread(void)
- {
-// msg_t recv_m;
-// recv_m.type = TCP_NOT_DEFINED;
-// while (recv_m.type != TCP_CONTINUE)
-// {
-// net_msg_receive(&recv_m);
-// }
- }
+{
+ // msg_t recv_m;
+ // recv_m.type = TCP_NOT_DEFINED;
+ // while (recv_m.type != TCP_CONTINUE)
+ // {
+ // net_msg_receive(&recv_m);
+ // }
+}
int net_msg_receive(msg_t *m)
- {
- return msg_receive(m);
- }
+{
+ return msg_receive(m);
+}
int net_msg_reply(msg_t *m, msg_t *reply, uint16_t message)
- {
- reply->type = message;
- return msg_reply(m, reply);
- }
+{
+ reply->type = message;
+ return msg_reply(m, reply);
+}
int net_msg_send(msg_t *m, unsigned int pid, bool block, uint16_t message)
- {
- m->type = message;
- return msg_send(m, pid, block);
- }
+{
+ m->type = message;
+ return msg_send(m, pid, block);
+}
int net_msg_send_recv(msg_t *m, msg_t *reply, unsigned int pid, uint16_t message)
- {
- m->type = message;
- return msg_send_receive(m, reply, pid);;
- }
+{
+ m->type = message;
+ return msg_send_receive(m, reply, pid);;
+}
diff --git a/sys/net/net_help/net_help.c b/sys/net/net_help/net_help.c
index 5d008e0eb9c688557f7cec8cdb4db1c8b65638c5..2b249a33a4d4d3df9dfc50b14599603890c1dc79 100644
--- a/sys/net/net_help/net_help.c
+++ b/sys/net/net_help/net_help.c
@@ -12,48 +12,50 @@
#include "net_help.h"
void printArrayRange(uint8_t *array, uint16_t len, char *str)
- {
- int i = 0;
- printf("-------------%s-------------\n", str);
- for (i = 0; i < len; i++)
- {
- printf("%#x ", *(array+i));
- }
- printf("\n-----------%u-------------\n", len);
- }
+{
+ int i = 0;
+ printf("-------------%s-------------\n", str);
+
+ for(i = 0; i < len; i++) {
+ printf("%#x ", *(array + i));
+ }
+
+ printf("\n-----------%u-------------\n", len);
+}
uint16_t csum(uint16_t sum, uint8_t *buf, uint16_t len)
- {
+{
int count;
uint16_t carry;
count = len >> 1;
- if(count)
- {
- if(count)
- {
+
+ if(count) {
+ if(count) {
carry = 0;
- do
- {
- uint16_t t = (*buf << 8) + *(buf+1);
+
+ do {
+ uint16_t t = (*buf << 8) + *(buf + 1);
count--;
buf += 2;
sum += carry;
sum += t;
carry = (t > sum);
- } while(count);
+ }
+ while(count);
+
sum += carry;
- }
- }
- if(len & 1)
- {
+ }
+ }
+
+ if(len & 1) {
uint16_t u = (*buf << 8);
sum += (*buf << 8);
- if(sum < u)
- {
+
+ if(sum < u) {
sum++;
- }
- }
+ }
+ }
return sum;
- }
+}
diff --git a/sys/net/protocol-multiplex/protocol-multiplex.c b/sys/net/protocol-multiplex/protocol-multiplex.c
index d5ac1894fa61de4de98efc287a32e06b060842ea..72c1d6254bdc5a7975d2f1be25ad45e6d18bf4a8 100644
--- a/sys/net/protocol-multiplex/protocol-multiplex.c
+++ b/sys/net/protocol-multiplex/protocol-multiplex.c
@@ -49,97 +49,103 @@ and the mailinglist (subscription via web site)
//#define DEBUG
#ifdef DEBUG
- #include <stdio.h>
- #define PRINTF(fmt,args...) printf("pm: " fmt "\n", ##args)
+#include <stdio.h>
+#define PRINTF(fmt,args...) printf("pm: " fmt "\n", ##args)
#else
- #define PRINTF(...)
+#define PRINTF(...)
#endif
/*---------------------------------------------------------------------------*/
-void
-pm_init_table(pm_table_t* table, uint8_t size, handler_entry_t* handler)
+void pm_init_table(pm_table_t *table, uint8_t size, handler_entry_t *handler)
{
- table->size = size;
- table->handler = handler;
- memset(handler, 0, sizeof(handler_entry_t) * size);
+ table->size = size;
+ table->handler = handler;
+ memset(handler, 0, sizeof(handler_entry_t) * size);
}
/*---------------------------------------------------------------------------*/
-int
-pm_find_handler_index(const pm_table_t* table, protocol_t protocol, unsigned int start)
+int pm_find_handler_index(const pm_table_t *table, protocol_t protocol,
+ unsigned int start)
{
- int i;
- handler_entry_t* e = &table->handler[start];
- for(i = start; i < table->size; i++, e++)
- {
- if (e->protocol == protocol)
- return i;
- }
- return -1;
+ int i;
+ handler_entry_t *e = &table->handler[start];
+
+ for(i = start; i < table->size; i++, e++) {
+ if(e->protocol == protocol) {
+ return i;
+ }
+ }
+
+ return -1;
}
/*---------------------------------------------------------------------------*/
-int
-pm_set_handler(const pm_table_t* table, protocol_t protocol, packet_handler_t handler)
+int pm_set_handler(const pm_table_t *table, protocol_t protocol,
+ packet_handler_t handler)
{
- // Reject illegal values
- if (protocol == 0 || handler == NULL) {
- PRINTF("proto %u rejected", protocol);
- return -1;
- }
- // Check if there is already a handler for given protocol
- int index = pm_find_handler_index(table, protocol, 0);
- if (index >= 0)
- {
- // Two handlers for same protocol not allowed because only
- // one gets called. This hasn't to be the last one who
- // registered!
- PRINTF("proto %u handler found, reset", protocol);
- table->handler[index].protocol = 0;
- table->handler[index].handler = NULL;
-
- }
- // Find free position for handler (protocol value is 0)
- index = pm_find_handler_index(table, 0, 0);
- // Store handler if free index found
- if (index >= 0)
- {
- PRINTF("proto %u, set", protocol);
- table->handler[index].protocol = protocol;
- table->handler[index].handler = handler;
- }
- // Return result (-1 on error or no free index)
- return index;
+ /* Reject illegal values */
+ if(protocol == 0 || handler == NULL) {
+ PRINTF("proto %u rejected", protocol);
+ return -1;
+ }
+
+ /* Check if there is already a handler for given protocol */
+ int index = pm_find_handler_index(table, protocol, 0);
+
+ if(index >= 0) {
+ /* Two handlers for same protocol not allowed because only
+ * one gets called. This hasn't to be the last one who
+ * registered! */
+ PRINTF("proto %u handler found, reset", protocol);
+ table->handler[index].protocol = 0;
+ table->handler[index].handler = NULL;
+ }
+
+ /* Find free position for handler (protocol value is 0) */
+ index = pm_find_handler_index(table, 0, 0);
+
+ /* Store handler if free index found */
+ if(index >= 0) {
+ PRINTF("proto %u, set", protocol);
+ table->handler[index].protocol = protocol;
+ table->handler[index].handler = handler;
+ }
+
+ /* Return result (-1 on error or no free index) */
+ return index;
}
/*---------------------------------------------------------------------------*/
-void
-pm_remove_handler(const pm_table_t* table, protocol_t protocol, packet_handler_t handler)
+void pm_remove_handler(const pm_table_t *table, protocol_t protocol,
+ packet_handler_t handler)
{
- int i;
- for (i = 0; i < table->size; i++)
- {
- if (table->handler[i].protocol == protocol && table->handler[i].handler == handler)
- {
- PRINTF("proto %u handler found, reset", protocol);
- table->handler[i].protocol = 0;
- table->handler[i].handler = NULL;
- }
- }
+ int i;
+
+ for(i = 0; i < table->size; i++) {
+ if(table->handler[i].protocol == protocol && table->handler[i].handler == handler) {
+ PRINTF("proto %u handler found, reset", protocol);
+ table->handler[i].protocol = 0;
+ table->handler[i].handler = NULL;
+ }
+ }
}
/*---------------------------------------------------------------------------*/
-int
-pm_invoke(const pm_table_t* table, protocol_t protocol, void* payload, int payload_size, packet_info_t* packet_info)
+int pm_invoke(const pm_table_t *table, protocol_t protocol, void *payload,
+ int payload_size, packet_info_t *packet_info)
{
- int index = 0;
-
- // Reject illegal values
- if (protocol == 0) return -1;
-
- if ( (index = pm_find_handler_index(table, protocol, index)) != -1 ) {
- PRINTF("proto %u, invoke", protocol);
- table->handler[index].handler(payload, payload_size, packet_info);
- } else {
- PRINTF("proto %u invoke failed (no handler)", protocol);
- }
- return index;
+ int index = 0;
+
+ /* Reject illegal values */
+ if(protocol == 0) {
+ return -1;
+ }
+
+ if((index = pm_find_handler_index(table, protocol, index)) != -1) {
+ PRINTF("proto %u, invoke", protocol);
+ table->handler[index].handler(payload, payload_size, packet_info);
+ }
+ else {
+ PRINTF("proto %u invoke failed (no handler)", protocol);
+ }
+
+ return index;
}
/*---------------------------------------------------------------------------*/
/** @} */
diff --git a/sys/net/protocol-multiplex/protocol-multiplex.h b/sys/net/protocol-multiplex/protocol-multiplex.h
index b324aede5b2e4b18fcc039f6f849d7ab6ed316e6..f235138317db66d3c7354e7527562ba7bfdea7d3 100644
--- a/sys/net/protocol-multiplex/protocol-multiplex.h
+++ b/sys/net/protocol-multiplex/protocol-multiplex.h
@@ -49,20 +49,20 @@ and the mailinglist (subscription via web site)
#include "radio/types.h"
typedef struct {
- packet_handler_t handler;
- protocol_t protocol;
+ packet_handler_t handler;
+ protocol_t protocol;
} handler_entry_t;
typedef struct {
- uint8_t size;
- handler_entry_t* handler;
+ uint8_t size;
+ handler_entry_t *handler;
} pm_table_t;
-void pm_init_table(pm_table_t* table, uint8_t size, handler_entry_t* handler);
-int pm_find_handler_index(const pm_table_t* table, protocol_t protocol, unsigned int start);
-int pm_set_handler(const pm_table_t* table, protocol_t protocol, packet_handler_t handler);
-void pm_remove_handler(const pm_table_t* table, protocol_t protocol, packet_handler_t handler);
-int pm_invoke(const pm_table_t* table, protocol_t protocol, void* payload, int payload_size, packet_info_t* packet_info);
+void pm_init_table(pm_table_t *table, uint8_t size, handler_entry_t *handler);
+int pm_find_handler_index(const pm_table_t *table, protocol_t protocol, unsigned int start);
+int pm_set_handler(const pm_table_t *table, protocol_t protocol, packet_handler_t handler);
+void pm_remove_handler(const pm_table_t *table, protocol_t protocol, packet_handler_t handler);
+int pm_invoke(const pm_table_t *table, protocol_t protocol, void *payload, int payload_size, packet_info_t *packet_info);
/** @} */
diff --git a/sys/ping/ping.c b/sys/ping/ping.c
index 62d23ac2b8d02b2be2f98ac322b72e75255505f7..bec8010970d2d5b35870bb8e329ca07807a11264 100644
--- a/sys/ping/ping.c
+++ b/sys/ping/ping.c
@@ -17,64 +17,79 @@ radio_address_t r_address = 0;
timex_t start = 0;
float rtt = 0;
-void ping_handler(void *payload, int payload_size,
- packet_info_t *packet_info){
- pong(packet_info->phy_src);
+void ping_handler(void *payload, int payload_size,
+ packet_info_t *packet_info)
+{
+ pong(packet_info->phy_src);
}
void pong_handler(void *payload, int payload_size,
- packet_info_t *packet_info){
- calc_rtt();
- print_success();
+ packet_info_t *packet_info)
+{
+ calc_rtt();
+ print_success();
}
-void pong(uint16_t src){
- int trans_ok = cc1100_send_csmaca(src,protocol_id,2,pipa->payload,
- sizeof(pipa->payload));
- if(trans_ok < 0)
- print_failed();
+void pong(uint16_t src)
+{
+ int trans_ok = cc1100_send_csmaca(src, protocol_id, 2, pipa->payload,
+ sizeof(pipa->payload));
+
+ if(trans_ok < 0) {
+ print_failed();
+ }
}
-void ping_init(protocol_t protocol, uint8_t channr, radio_address_t addr){
- protocol_id = protocol;
- r_address = addr;
- cc1100_set_packet_handler(protocol, ping_handler);
- cc1100_set_channel(channr);
- cc1100_set_address(r_address);
- init_payload();
+void ping_init(protocol_t protocol, uint8_t channr, radio_address_t addr)
+{
+ protocol_id = protocol;
+ r_address = addr;
+ cc1100_set_packet_handler(protocol, ping_handler);
+ cc1100_set_channel(channr);
+ cc1100_set_address(r_address);
+ init_payload();
}
-void ping(radio_address_t addr, uint8_t channr){
- cc1100_set_packet_handler(protocol_id, pong_handler);
- cc1100_set_channel(channr);
- cc1100_set_address(r_address);
- while(1){
- vtimer_now(&start);
- int trans_ok = cc1100_send_csmaca(addr,
- protocol_id,2,pipa->payload,sizeof(pipa->payload));
- if(trans_ok < 0)
- print_failed();
- hwtimer_wait(500000);
- }
+void ping(radio_address_t addr, uint8_t channr)
+{
+ cc1100_set_packet_handler(protocol_id, pong_handler);
+ cc1100_set_channel(channr);
+ cc1100_set_address(r_address);
+
+ while(1) {
+ vtimer_now(&start);
+ int trans_ok = cc1100_send_csmaca(addr,
+ protocol_id, 2, pipa->payload, sizeof(pipa->payload));
+
+ if(trans_ok < 0) {
+ print_failed();
+ }
+
+ hwtimer_wait(500000);
+ }
}
-void calc_rtt(void){
- timex_t end;
- vtimer_now(&end);
- timex_t result = vtimer_sub(end, start);
-
- rtt = result.seconds+(float)result.microseconds/100000;
+void calc_rtt(void)
+{
+ timex_t end;
+ vtimer_now(&end);
+ timex_t result = vtimer_sub(end, start);
+
+ rtt = result.seconds + (float)result.microseconds / 100000;
}
-void print_success(void){
- printf("%s%f%s\n","time=",rtt,"ms");
+void print_success(void)
+{
+ printf("%s%f%s\n", "time=", rtt, "ms");
}
-void print_failed(void){
- printf("%s\n","ping failed");
+void print_failed(void)
+{
+ printf("%s\n", "ping failed");
}
-void init_payload(void){
- pipa = malloc(sizeof(pipa));
- pipa->payload = NULL;
+void init_payload(void)
+{
+ pipa = malloc(sizeof(pipa));
+ pipa->payload = NULL;
}
diff --git a/sys/syslog/syslog-api.c b/sys/syslog/syslog-api.c
index 63528532e8b1c24054c0395e203e2b63ccfe42f8..0ff92971cde3b00b65fecee4f10cc1bed8525590 100644
--- a/sys/syslog/syslog-api.c
+++ b/sys/syslog/syslog-api.c
@@ -1,27 +1,19 @@
-/******************************************************************************
-Copyright 2009, Freie Universitaet Berlin (FUB). All rights reserved.
+/**
+ * Syslog daemon
+ *
+ * Copyright (C) 2009-2013 Freie Universitaet Berlin
+ *
+ * This file subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ *
+ * @ingroup syslog
+ * @{
+ * @file syslog-api.c
+ * @author Freie Universitaet Berlin
+ * @}
+ */
-These sources were developed at the Freie Universitaet Berlin, Computer Systems
-and Telematics group (http://cst.mi.fu-berlin.de).
--------------------------------------------------------------------------------
-This file is part of RIOT.
-
-This program is free software: you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free Software
-Foundation, either version 3 of the License, or (at your option) any later
-version.
-
-RIOT is distributed in the hope that it will be useful, but WITHOUT
-ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License along with
-this program. If not, see http://www.gnu.org/licenses/ .
---------------------------------------------------------------------------------
-For further information and questions please use the web site
- http://scatterweb.mi.fu-berlin.de
-and the mailinglist (subscription via web site)
- scatterweb@lists.spline.inf.fu-berlin.de
*******************************************************************************/
#include <stdarg.h>