From c17aeae9c34444e9b9b2b1735f31c6acd3519391 Mon Sep 17 00:00:00 2001
From: Guy Zana <guy@cloudius-systems.com>
Date: Thu, 7 Feb 2013 12:16:30 +0200
Subject: [PATCH] Bring in_var.h and fnv_hash.h
---
bsd/sys/netinet/in_var.h | 476 +++++++++++++++++++++++++++++++++++++++
bsd/sys/sys/fnv_hash.h | 71 ++++++
2 files changed, 547 insertions(+)
create mode 100644 bsd/sys/netinet/in_var.h
create mode 100644 bsd/sys/sys/fnv_hash.h
diff --git a/bsd/sys/netinet/in_var.h b/bsd/sys/netinet/in_var.h
new file mode 100644
index 000000000..e6e4b7387
--- /dev/null
+++ b/bsd/sys/netinet/in_var.h
@@ -0,0 +1,476 @@
+/*-
+ * Copyright (c) 1985, 1986, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)in_var.h 8.2 (Berkeley) 1/9/95
+ * $FreeBSD$
+ */
+
+#ifndef _NETINET_IN_VAR_H_
+#define _NETINET_IN_VAR_H_
+
+#include <sys/queue.h>
+#include <sys/fnv_hash.h>
+#include <sys/tree.h>
+
+struct igmp_ifinfo;
+struct in_multi;
+struct lltable;
+
+/*
+ * IPv4 per-interface state.
+ */
+struct in_ifinfo {
+ struct lltable *ii_llt; /* ARP state */
+ struct igmp_ifinfo *ii_igmp; /* IGMP state */
+ struct in_multi *ii_allhosts; /* 224.0.0.1 membership */
+};
+
+/*
+ * Interface address, Internet version. One of these structures
+ * is allocated for each Internet address on an interface.
+ * The ifaddr structure contains the protocol-independent part
+ * of the structure and is assumed to be first.
+ */
+struct in_ifaddr {
+ struct ifaddr ia_ifa; /* protocol-independent info */
+#define ia_ifp ia_ifa.ifa_ifp
+#define ia_flags ia_ifa.ifa_flags
+ /* ia_subnet{,mask} in host order */
+ u_long ia_subnet; /* subnet address */
+ u_long ia_subnetmask; /* mask of subnet */
+ LIST_ENTRY(in_ifaddr) ia_hash; /* entry in bucket of inet addresses */
+ TAILQ_ENTRY(in_ifaddr) ia_link; /* list of internet addresses */
+ struct sockaddr_in ia_addr; /* reserve space for interface name */
+ struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
+#define ia_broadaddr ia_dstaddr
+ struct sockaddr_in ia_sockmask; /* reserve space for general netmask */
+};
+
+struct in_aliasreq {
+ char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
+ struct sockaddr_in ifra_addr;
+ struct sockaddr_in ifra_broadaddr;
+#define ifra_dstaddr ifra_broadaddr
+ struct sockaddr_in ifra_mask;
+};
+/*
+ * Given a pointer to an in_ifaddr (ifaddr),
+ * return a pointer to the addr as a sockaddr_in.
+ */
+#define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr))
+#define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr))
+
+#define IN_LNAOF(in, ifa) \
+ ((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask))
+
+
+#ifdef _KERNEL
+extern u_char inetctlerrmap[];
+
+#define LLTABLE(ifp) \
+ ((struct in_ifinfo *)(ifp)->if_afdata[AF_INET])->ii_llt
+/*
+ * Hash table for IP addresses.
+ */
+TAILQ_HEAD(in_ifaddrhead, in_ifaddr);
+LIST_HEAD(in_ifaddrhashhead, in_ifaddr);
+
+VNET_DECLARE(struct in_ifaddrhashhead *, in_ifaddrhashtbl);
+VNET_DECLARE(struct in_ifaddrhead, in_ifaddrhead);
+VNET_DECLARE(u_long, in_ifaddrhmask); /* mask for hash table */
+
+#define V_in_ifaddrhashtbl VNET(in_ifaddrhashtbl)
+#define V_in_ifaddrhead VNET(in_ifaddrhead)
+#define V_in_ifaddrhmask VNET(in_ifaddrhmask)
+
+#define INADDR_NHASH_LOG2 9
+#define INADDR_NHASH (1 << INADDR_NHASH_LOG2)
+#define INADDR_HASHVAL(x) fnv_32_buf((&(x)), sizeof(x), FNV1_32_INIT)
+#define INADDR_HASH(x) \
+ (&V_in_ifaddrhashtbl[INADDR_HASHVAL(x) & V_in_ifaddrhmask])
+
+extern struct rwlock in_ifaddr_lock;
+
+#define IN_IFADDR_LOCK_ASSERT() rw_assert(&in_ifaddr_lock, RA_LOCKED)
+#define IN_IFADDR_RLOCK() rw_rlock(&in_ifaddr_lock)
+#define IN_IFADDR_RLOCK_ASSERT() rw_assert(&in_ifaddr_lock, RA_RLOCKED)
+#define IN_IFADDR_RUNLOCK() rw_runlock(&in_ifaddr_lock)
+#define IN_IFADDR_WLOCK() rw_wlock(&in_ifaddr_lock)
+#define IN_IFADDR_WLOCK_ASSERT() rw_assert(&in_ifaddr_lock, RA_WLOCKED)
+#define IN_IFADDR_WUNLOCK() rw_wunlock(&in_ifaddr_lock)
+
+/*
+ * Macro for finding the internet address structure (in_ifaddr)
+ * corresponding to one of our IP addresses (in_addr).
+ */
+#define INADDR_TO_IFADDR(addr, ia) \
+ /* struct in_addr addr; */ \
+ /* struct in_ifaddr *ia; */ \
+do { \
+\
+ LIST_FOREACH(ia, INADDR_HASH((addr).s_addr), ia_hash) \
+ if (IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) \
+ break; \
+} while (0)
+
+/*
+ * Macro for finding the interface (ifnet structure) corresponding to one
+ * of our IP addresses.
+ */
+#define INADDR_TO_IFP(addr, ifp) \
+ /* struct in_addr addr; */ \
+ /* struct ifnet *ifp; */ \
+{ \
+ struct in_ifaddr *ia; \
+\
+ INADDR_TO_IFADDR(addr, ia); \
+ (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \
+}
+
+/*
+ * Macro for finding the internet address structure (in_ifaddr) corresponding
+ * to a given interface (ifnet structure).
+ */
+#define IFP_TO_IA(ifp, ia) \
+ /* struct ifnet *ifp; */ \
+ /* struct in_ifaddr *ia; */ \
+do { \
+ IN_IFADDR_RLOCK(); \
+ for ((ia) = TAILQ_FIRST(&V_in_ifaddrhead); \
+ (ia) != NULL && (ia)->ia_ifp != (ifp); \
+ (ia) = TAILQ_NEXT((ia), ia_link)) \
+ continue; \
+ if ((ia) != NULL) \
+ ifa_ref(&(ia)->ia_ifa); \
+ IN_IFADDR_RUNLOCK(); \
+} while (0)
+#endif
+
+/*
+ * IP datagram reassembly.
+ */
+#define IPREASS_NHASH_LOG2 6
+#define IPREASS_NHASH (1 << IPREASS_NHASH_LOG2)
+#define IPREASS_HMASK (IPREASS_NHASH - 1)
+#define IPREASS_HASH(x,y) \
+ (((((x) & 0xF) | ((((x) >> 8) & 0xF) << 4)) ^ (y)) & IPREASS_HMASK)
+
+/*
+ * Legacy IPv4 IGMP per-link structure.
+ */
+struct router_info {
+ struct ifnet *rti_ifp;
+ int rti_type; /* type of router which is querier on this interface */
+ int rti_time; /* # of slow timeouts since last old query */
+ SLIST_ENTRY(router_info) rti_list;
+};
+
+/*
+ * Per-interface IGMP router version information.
+ */
+struct igmp_ifinfo {
+ LIST_ENTRY(igmp_ifinfo) igi_link;
+ struct ifnet *igi_ifp; /* interface this instance belongs to */
+ uint32_t igi_version; /* IGMPv3 Host Compatibility Mode */
+ uint32_t igi_v1_timer; /* IGMPv1 Querier Present timer (s) */
+ uint32_t igi_v2_timer; /* IGMPv2 Querier Present timer (s) */
+ uint32_t igi_v3_timer; /* IGMPv3 General Query (interface) timer (s)*/
+ uint32_t igi_flags; /* IGMP per-interface flags */
+ uint32_t igi_rv; /* IGMPv3 Robustness Variable */
+ uint32_t igi_qi; /* IGMPv3 Query Interval (s) */
+ uint32_t igi_qri; /* IGMPv3 Query Response Interval (s) */
+ uint32_t igi_uri; /* IGMPv3 Unsolicited Report Interval (s) */
+ SLIST_HEAD(,in_multi) igi_relinmhead; /* released groups */
+ struct ifqueue igi_gq; /* queue of general query responses */
+};
+
+#define IGIF_SILENT 0x00000001 /* Do not use IGMP on this ifp */
+#define IGIF_LOOPBACK 0x00000002 /* Send IGMP reports to loopback */
+
+/*
+ * IPv4 multicast IGMP-layer source entry.
+ */
+struct ip_msource {
+ RB_ENTRY(ip_msource) ims_link; /* RB tree links */
+ in_addr_t ims_haddr; /* host byte order */
+ struct ims_st {
+ uint16_t ex; /* # of exclusive members */
+ uint16_t in; /* # of inclusive members */
+ } ims_st[2]; /* state at t0, t1 */
+ uint8_t ims_stp; /* pending query */
+};
+
+/*
+ * IPv4 multicast PCB-layer source entry.
+ */
+struct in_msource {
+ RB_ENTRY(ip_msource) ims_link; /* RB tree links */
+ in_addr_t ims_haddr; /* host byte order */
+ uint8_t imsl_st[2]; /* state before/at commit */
+};
+
+RB_HEAD(ip_msource_tree, ip_msource); /* define struct ip_msource_tree */
+
+static __inline int
+ip_msource_cmp(const struct ip_msource *a, const struct ip_msource *b)
+{
+
+ if (a->ims_haddr < b->ims_haddr)
+ return (-1);
+ if (a->ims_haddr == b->ims_haddr)
+ return (0);
+ return (1);
+}
+RB_PROTOTYPE(ip_msource_tree, ip_msource, ims_link, ip_msource_cmp);
+
+/*
+ * IPv4 multicast PCB-layer group filter descriptor.
+ */
+struct in_mfilter {
+ struct ip_msource_tree imf_sources; /* source list for (S,G) */
+ u_long imf_nsrc; /* # of source entries */
+ uint8_t imf_st[2]; /* state before/at commit */
+};
+
+/*
+ * IPv4 group descriptor.
+ *
+ * For every entry on an ifnet's if_multiaddrs list which represents
+ * an IP multicast group, there is one of these structures.
+ *
+ * If any source filters are present, then a node will exist in the RB-tree
+ * to permit fast lookup by source whenever an operation takes place.
+ * This permits pre-order traversal when we issue reports.
+ * Source filter trees are kept separately from the socket layer to
+ * greatly simplify locking.
+ *
+ * When IGMPv3 is active, inm_timer is the response to group query timer.
+ * The state-change timer inm_sctimer is separate; whenever state changes
+ * for the group the state change record is generated and transmitted,
+ * and kept if retransmissions are necessary.
+ *
+ * FUTURE: inm_link is now only used when groups are being purged
+ * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but
+ * because it is at the very start of the struct, we can't do this
+ * w/o breaking the ABI for ifmcstat.
+ */
+struct in_multi {
+ LIST_ENTRY(in_multi) inm_link; /* to-be-released by in_ifdetach */
+ struct in_addr inm_addr; /* IP multicast address, convenience */
+ struct ifnet *inm_ifp; /* back pointer to ifnet */
+ struct ifmultiaddr *inm_ifma; /* back pointer to ifmultiaddr */
+ u_int inm_timer; /* IGMPv1/v2 group / v3 query timer */
+ u_int inm_state; /* state of the membership */
+ void *inm_rti; /* unused, legacy field */
+ u_int inm_refcount; /* reference count */
+
+ /* New fields for IGMPv3 follow. */
+ struct igmp_ifinfo *inm_igi; /* IGMP info */
+ SLIST_ENTRY(in_multi) inm_nrele; /* to-be-released by IGMP */
+ struct ip_msource_tree inm_srcs; /* tree of sources */
+ u_long inm_nsrc; /* # of tree entries */
+
+ struct ifqueue inm_scq; /* queue of pending
+ * state-change packets */
+ struct timeval inm_lastgsrtv; /* Time of last G-S-R query */
+ uint16_t inm_sctimer; /* state-change timer */
+ uint16_t inm_scrv; /* state-change rexmit count */
+
+ /*
+ * SSM state counters which track state at T0 (the time the last
+ * state-change report's RV timer went to zero) and T1
+ * (time of pending report, i.e. now).
+ * Used for computing IGMPv3 state-change reports. Several refcounts
+ * are maintained here to optimize for common use-cases.
+ */
+ struct inm_st {
+ uint16_t iss_fmode; /* IGMP filter mode */
+ uint16_t iss_asm; /* # of ASM listeners */
+ uint16_t iss_ex; /* # of exclusive members */
+ uint16_t iss_in; /* # of inclusive members */
+ uint16_t iss_rec; /* # of recorded sources */
+ } inm_st[2]; /* state at t0, t1 */
+};
+
+/*
+ * Helper function to derive the filter mode on a source entry
+ * from its internal counters. Predicates are:
+ * A source is only excluded if all listeners exclude it.
+ * A source is only included if no listeners exclude it,
+ * and at least one listener includes it.
+ * May be used by ifmcstat(8).
+ */
+static __inline uint8_t
+ims_get_mode(const struct in_multi *inm, const struct ip_msource *ims,
+ uint8_t t)
+{
+
+ t = !!t;
+ if (inm->inm_st[t].iss_ex > 0 &&
+ inm->inm_st[t].iss_ex == ims->ims_st[t].ex)
+ return (MCAST_EXCLUDE);
+ else if (ims->ims_st[t].in > 0 && ims->ims_st[t].ex == 0)
+ return (MCAST_INCLUDE);
+ return (MCAST_UNDEFINED);
+}
+
+#ifdef _KERNEL
+
+#ifdef SYSCTL_DECL
+SYSCTL_DECL(_net_inet);
+SYSCTL_DECL(_net_inet_ip);
+SYSCTL_DECL(_net_inet_raw);
+#endif
+
+/*
+ * Lock macros for IPv4 layer multicast address lists. IPv4 lock goes
+ * before link layer multicast locks in the lock order. In most cases,
+ * consumers of IN_*_MULTI() macros should acquire the locks before
+ * calling them; users of the in_{add,del}multi() functions should not.
+ */
+extern struct mtx in_multi_mtx;
+#define IN_MULTI_LOCK() mtx_lock(&in_multi_mtx)
+#define IN_MULTI_UNLOCK() mtx_unlock(&in_multi_mtx)
+#define IN_MULTI_LOCK_ASSERT() mtx_assert(&in_multi_mtx, MA_OWNED)
+#define IN_MULTI_UNLOCK_ASSERT() mtx_assert(&in_multi_mtx, MA_NOTOWNED)
+
+/*
+ * Function for looking up an in_multi record for an IPv4 multicast address
+ * on a given interface. ifp must be valid. If no record found, return NULL.
+ * The IN_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held.
+ */
+static __inline struct in_multi *
+inm_lookup_locked(struct ifnet *ifp, const struct in_addr ina)
+{
+ struct ifmultiaddr *ifma;
+ struct in_multi *inm;
+
+ IN_MULTI_LOCK_ASSERT();
+ IF_ADDR_LOCK_ASSERT(ifp);
+
+ inm = NULL;
+ TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) {
+ if (ifma->ifma_addr->sa_family == AF_INET) {
+ inm = (struct in_multi *)ifma->ifma_protospec;
+ if (inm->inm_addr.s_addr == ina.s_addr)
+ break;
+ inm = NULL;
+ }
+ }
+ return (inm);
+}
+
+/*
+ * Wrapper for inm_lookup_locked().
+ * The IF_ADDR_LOCK will be taken on ifp and released on return.
+ */
+static __inline struct in_multi *
+inm_lookup(struct ifnet *ifp, const struct in_addr ina)
+{
+ struct in_multi *inm;
+
+ IN_MULTI_LOCK_ASSERT();
+ IF_ADDR_RLOCK(ifp);
+ inm = inm_lookup_locked(ifp, ina);
+ IF_ADDR_RUNLOCK(ifp);
+
+ return (inm);
+}
+
+/* Acquire an in_multi record. */
+static __inline void
+inm_acquire_locked(struct in_multi *inm)
+{
+
+ IN_MULTI_LOCK_ASSERT();
+ ++inm->inm_refcount;
+}
+
+/*
+ * Return values for imo_multi_filter().
+ */
+#define MCAST_PASS 0 /* Pass */
+#define MCAST_NOTGMEMBER 1 /* This host not a member of group */
+#define MCAST_NOTSMEMBER 2 /* This host excluded source */
+#define MCAST_MUTED 3 /* [deprecated] */
+
+struct rtentry;
+struct route;
+struct ip_moptions;
+struct radix_node_head;
+
+int imo_multi_filter(const struct ip_moptions *, const struct ifnet *,
+ const struct sockaddr *, const struct sockaddr *);
+void inm_commit(struct in_multi *);
+void inm_clear_recorded(struct in_multi *);
+void inm_print(const struct in_multi *);
+int inm_record_source(struct in_multi *inm, const in_addr_t);
+void inm_release(struct in_multi *);
+void inm_release_locked(struct in_multi *);
+struct in_multi *
+ in_addmulti(struct in_addr *, struct ifnet *);
+void in_delmulti(struct in_multi *);
+int in_joingroup(struct ifnet *, const struct in_addr *,
+ /*const*/ struct in_mfilter *, struct in_multi **);
+int in_joingroup_locked(struct ifnet *, const struct in_addr *,
+ /*const*/ struct in_mfilter *, struct in_multi **);
+int in_leavegroup(struct in_multi *, /*const*/ struct in_mfilter *);
+int in_leavegroup_locked(struct in_multi *,
+ /*const*/ struct in_mfilter *);
+int in_control(struct socket *, u_long, caddr_t, struct ifnet *,
+ struct thread *);
+void in_rtqdrain(void);
+void ip_input(struct mbuf *);
+int in_ifadown(struct ifaddr *ifa, int);
+void in_ifscrub(struct ifnet *, struct in_ifaddr *, u_int);
+struct mbuf *ip_fastforward(struct mbuf *);
+void *in_domifattach(struct ifnet *);
+void in_domifdetach(struct ifnet *, void *);
+
+
+/* XXX */
+void in_rtalloc_ign(struct route *ro, u_long ignflags, u_int fibnum);
+void in_rtalloc(struct route *ro, u_int fibnum);
+struct rtentry *in_rtalloc1(struct sockaddr *, int, u_long, u_int);
+void in_rtredirect(struct sockaddr *, struct sockaddr *,
+ struct sockaddr *, int, struct sockaddr *, u_int);
+int in_rtrequest(int, struct sockaddr *,
+ struct sockaddr *, struct sockaddr *, int, struct rtentry **, u_int);
+void in_setmatchfunc(struct radix_node_head *, int);
+
+#if 0
+int in_rt_getifa(struct rt_addrinfo *, u_int fibnum);
+int in_rtioctl(u_long, caddr_t, u_int);
+int in_rtrequest1(int, struct rt_addrinfo *, struct rtentry **, u_int);
+#endif
+#endif /* _KERNEL */
+
+/* INET6 stuff */
+// #include <netinet6/in6_var.h>
+
+#endif /* _NETINET_IN_VAR_H_ */
diff --git a/bsd/sys/sys/fnv_hash.h b/bsd/sys/sys/fnv_hash.h
new file mode 100644
index 000000000..4bb691e84
--- /dev/null
+++ b/bsd/sys/sys/fnv_hash.h
@@ -0,0 +1,71 @@
+/*-
+ * Fowler / Noll / Vo Hash (FNV Hash)
+ * http://www.isthe.com/chongo/tech/comp/fnv/
+ *
+ * This is an implementation of the algorithms posted above.
+ * This file is placed in the public domain by Peter Wemm.
+ *
+ * $FreeBSD$
+ */
+
+
+typedef uint64_t u_register_t;
+
+typedef u_int32_t Fnv32_t;
+typedef u_int64_t Fnv64_t;
+
+#define FNV1_32_INIT ((Fnv32_t) 33554467UL)
+#define FNV1_64_INIT ((Fnv64_t) 0xcbf29ce484222325ULL)
+
+#define FNV_32_PRIME ((Fnv32_t) 0x01000193UL)
+#define FNV_64_PRIME ((Fnv64_t) 0x100000001b3ULL)
+
+static __inline Fnv32_t
+fnv_32_buf(const void *buf, size_t len, Fnv32_t hval)
+{
+ const u_int8_t *s = (const u_int8_t *)buf;
+
+ while (len-- != 0) {
+ hval *= FNV_32_PRIME;
+ hval ^= *s++;
+ }
+ return hval;
+}
+
+static __inline Fnv32_t
+fnv_32_str(const char *str, Fnv32_t hval)
+{
+ const u_int8_t *s = (const u_int8_t *)str;
+ Fnv32_t c;
+
+ while ((c = *s++) != 0) {
+ hval *= FNV_32_PRIME;
+ hval ^= c;
+ }
+ return hval;
+}
+
+static __inline Fnv64_t
+fnv_64_buf(const void *buf, size_t len, Fnv64_t hval)
+{
+ const u_int8_t *s = (const u_int8_t *)buf;
+
+ while (len-- != 0) {
+ hval *= FNV_64_PRIME;
+ hval ^= *s++;
+ }
+ return hval;
+}
+
+static __inline Fnv64_t
+fnv_64_str(const char *str, Fnv64_t hval)
+{
+ const u_int8_t *s = (const u_int8_t *)str;
+ u_register_t c; /* 32 bit on i386, 64 bit on alpha,ia64 */
+
+ while ((c = *s++) != 0) {
+ hval *= FNV_64_PRIME;
+ hval ^= c;
+ }
+ return hval;
+}
--
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