We are under the virtio namespace, it makes no sense to repeat the
virtio prefix again in the virito_rng driver.

Change the naming from virtio::virtio_rng to virtio::rng.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

if_getinfo is shorter and more consistent all the other if_ functions
name, e.g., if_init, if_ioctl.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Rename it to txq_stats and rxq_stats which are more consistent with
struct txq and struct rxq.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

We are under virtio namespace, no need to repeat the virtio prefix.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

We are under the virtio namespace, it makes no sense to repeat the
virtio prefix again in the virito_net driver.

Change the naming from virtio::virtio_net to virtio::net.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

It's better not to indent after the namespace specifier.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

vma layout changed in commit bbec1a18.

Signed-off-by: Tomasz Grabiec <tgrabiec@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Use --scsi or -S to boot from virtio-scsi instead of virtio-blk device.

This options is default to false.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Now, virtio-scsi disks use the same name as virtio-blk, e.g., vblk0,
vlbk1. If both scsi and blk are added to guest, they share the global disk
index number.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

This test includes a large number of tests for the timerfd_*() functions
and many of their bizarre use-cases and corner cases.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

This patch implements the Linux's timerfd_*() system calls, declared in
<sys/timerfd.h>. These define a file descriptor, usable for read() or
poll() and friends, which becomes readable when a timer expires.

This aspires to be a full implementation of timerfd, with all the intricate
details explained in timerfd_create(2).

timerfd was added to Linux five years ago (Linux 2.6.25). Boost's asio,
in particular, uses this feature if it thinks it is available.

Fixes #129.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Our sched::thread makes it rather difficult to create threads with
non-default attributes. This patch makes it easier to create a thread
with a non-default stack size, e.g., a light thread with a one-page stack:

   sched::thread a([&] { func(); }, sched::thread::attr(4096))

We should probably overhaul the sched::thread constructors at some
point to make it easier to specify options, but for now, this
specific constructor is convenient for my uses.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Error message:

bsd/sys/kern/uipc_socket.cc: In function 'socket* soalloc(vnet*)':
bsd/sys/kern/uipc_socket.cc:245:58: error: expected ')' before 'PRIx64'
  uipc_d("soalloc() so=%" PRIx64, (uint64_t)so);
                                                          ^

This was introduced in one of these commits:
c506516b14d32e416f4a9247869a1a89f7e9c413
406a93ed

As suggested by Pekka including <cinttypes> is the proper fix for C++11.

Signed-off-by: Tomasz Grabiec <tgrabiec@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

In commit 870d8410, Avi fixed a bug where if a timer_base::timer_fired()
function re-sets the same timer that fired, timer_list::fired() erroneously
removed the timer from the list after the timer being re-set. The fix in
that commit was to avoid removing the timer from the timer_list if the timer
is still armed after the call to timer_fired().

Unfortunatley, that commit didn't quite make timer re-set work. When I tried
now to use timer.set() in timer_base::timer_fired(), for implementing timerfd,
I discovered it still doesn't work: the set() tries to add the timer to the
timer_list while it is still on it, resulting in assertion failure.

The right thing to do is to first remove the fired timer from the list,
and only then call timer_fired(). If timer_fired() wants to set the timer
again, it can - but anyway, it will always set the timer with a different
time, so the timer will anyway occupy a different position in the sorted list,
so the right thing is always to remove the timer from the list and then
add it to the right place if we want.

I'm curious, by the way, what commit 870d8410 actually solved, and if
we could check this fix doesn't ruin it. All tests appear to still pass
with this patch (and also the new timerfd test).

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>
Reviewed-by: Tomasz Grabiec <tgrabiec@gmail.com>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

It's just to painful to do this piecemeal.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Commit 49497bdb added support for clock_gettime through syscall, because one
of the C++ libraries uses it this way. Turns out clock_getres can also be
reached the same way.

Signed-off-by: Glauber Costa <glommer@cloudius-systems.com>
Reviewed-by: Nadav Har'El <nyh@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

- Make ifconfig code use a new if_get_if_info()
  interface.
- Expanded the output of the ifconfig: exposed a few more
  statistics.

Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
Reviewed-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Added ifnet->if_get_if_info() method to collect the
internally gathered statistics into the standard if_data struct.

Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
Reviewed-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
Reviewed-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Added IFCAP_HWSTATS iface capability indicating that
device driver and HW are capable to handle the statistics internally.

Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
Reviewed-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Introducing rxq and txq structs representing the Rx and
Tx queues data correspondingly.

Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
Reviewed-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Introduced variable fs_size_mb - FS size in megabytes.
Useful for debugging on EC2.

Reviewed-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

There is no need for release memory ordering when assigning a null pointer
to an rcu pointer, since the null pointer cannot be dereferenced.  Add
a specialization of assign() that takes advantage of this fact.

Reviewed-by: Nadav Har'El <nyh@cloudius-systems.com>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

The add_buf_wait will sleep if there is not enough buf in the avail
ring.

When there is more space available, it can be woke up by wakeup_waiter.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

In some cases netperf relies on SIGALRM to wake sleeping
send*/recv*() calls. alarm() API on OSv doesn't fully comply to
specification, i.e. it executes SIGALRM handler but doesn't
interrupt sleeping syscalls. Because of this there is a race
condition that makes netserver sleep infinitely in some cases.

This commit introduces patch for netperf that acts as a work-around
for this problem by setting socket timeout for network operations.

This commit also introduces simple script that builds patched netperf
in automated manner.

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

The name is shorter and clearer and more consistent with the name used
in virtio-scsi.

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Signed-off-by: Asias He <asias.hejun@gmail.com>
[ penberg: keep comments vertically aligned ]
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

bio is already signalled in all cases. No need to do it in destructor.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

It's better not to indent after the namespace specifier.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Change from blk::make_virtio_request to blk::make_request.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

We are under the virtio namespace, it makes no sense to repeat the
virtio prefix again in the virito_blk driver.

Change the naming from virtio::virtio_blk to virtio::blk.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

The check is moved to bdev_read and bdev_write.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

The check is moved to bdev_read and bdev_write.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

The check is moved to bdev_read and bdev_write.

Sigaed-off-by: Asias He <asias@cloudius-systems.com>

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>