linux-stable.git/drivers/vhost/net.c, branch v3.6

vhost: Separate vhost-net features from vhost features

2012-07-21T22:21:53+00:00

In order for other vhost devices to use the VHOST_FEATURES bits the
vhost-net specific bits need to be moved to their own VHOST_NET_FEATURES
constant.

(Asias: Update drivers/vhost/test.c to use VHOST_NET_FEATURES)

Signed-off-by: Stefan Hajnoczi 
Cc: Zhi Yong Wu 
Cc: Michael S. Tsirkin 
Cc: Paolo Bonzini 
Cc: Asias He 
Signed-off-by: Nicholas A. Bellinger 
Signed-off-by: Michael S. Tsirkin

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2012-05-17T02:17:37+00:00

vhost-net: fix handle_rx buffer size

2012-05-11T22:16:57+00:00

Take vlan header length into account, when vlan id is stored as
vlan_tci. Otherwise tagged packets coming from macvtap will be
truncated.

Signed-off-by: Basil Gor 
Acked-by: Michael S. Tsirkin 
Signed-off-by: David S. Miller

vhost_net: zerocopy: adding and signalling immediately when fully copied

2012-05-02T15:22:24+00:00

When a packet were fully copied in zerocopy, we don't wait for the DMA done to
mark the done flag, so after the packet were passed to lower device, we need to
add used and signal guest immediately.

Signed-off-by: Jason Wang 
Signed-off-by: Michael S. Tsirkin

vhost_net: re-poll only on EAGAIN or ENOBUFS

2012-05-02T15:22:24+00:00

Currently, we restart tx polling unconditionally when sendmsg()
fails. This would cause unnecessary wakeups of vhost wokers and waste
cpu utlization when evil userspace(guest driver) is able to hit EFAULT or
EINVAL.

The polling is only needed when the socket send buffer were exceeded or not
enough memory. So fix this by restarting polling only when sendmsg() returns
EAGAIN/ENOBUFS.

Signed-off-by: Jason Wang 
Signed-off-by: Michael S. Tsirkin

vhost_net: zerocopy: fix possible NULL pointer dereference of vq->bufs

2012-05-02T15:22:22+00:00

When we want to disable vhost_net backend while there's a tx work, a possible
NULL pointer defernece may happen we we try to deference the vq->bufs after
vhost_net_set_backend() assign a NULL to it.

As suggested by Michael, fix this by checking the vq->bufs instead of
vhost_sock_zcopy().

Signed-off-by: Michael S. Tsirkin

skbuff: struct ubuf_info callback type safety

2012-04-13T17:09:19+00:00

The skb struct ubuf_info callback gets passed struct ubuf_info
itself, not the arg value as the field name and the function signature
seem to imply. Rename the arg field to ctx to match usage,
add documentation and change the callback argument type
to make usage clear and to have compiler check correctness.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: David S. Miller

vhost: fix release path lockdep checks

2012-02-28T07:13:22+00:00

We shouldn't hold any locks on release path. Pass a flag to
vhost_dev_cleanup to use the lockdep info correctly.

Signed-off-by: Michael S. Tsirkin 
Tested-by: Sasha Levin

vhost-net: add module alias (v2.1)

2012-01-13T18:12:23+00:00

By adding some module aliases, programs (or users) won't have to explicitly
call modprobe. Vhost-net will always be available if built into the kernel.
It does require assigning a permanent minor number for depmod to work.

Also:
  - use C99 style initialization.
  - add missing entry in documentation for loop-control

Signed-off-by: Stephen Hemminger 
Acked-By: Kay Sievers 
Signed-off-by: David S. Miller

vhost: handle wrap around in # of bufs math

2011-07-21T07:48:27+00:00

The meth for calculating the # of outstanding buffers gives
incorrect results when vq->upend_idx wraps around zero.
Fix that.

Signed-off-by: Shirley Ma 
Signed-off-by: Michael S. Tsirkin