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504 Commits

Author SHA1 Message Date
Rusty Russell
8329d98e48 virtio: fix net driver loop case where we fail to restart 
skb is only NULL the first time around: it's more correct to test for
being under-budget.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2007-11-19 11:20:44 +11:00
Rusty Russell
74b2553f1d virtio: fix module/device unloading 
The virtio code never hooked through the ->remove callback.  Although
noone supports device removal at the moment, this code is already
needed for module unloading.

This of course also revealed bugs in virtio_blk, virtio_net and lguest
unloading paths.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2007-11-19 11:20:42 +11:00
Rusty Russell
4d125de3a5 virtio: more fallout from scatterlist changes. 
This fixes OOPS in network driver when CONFIG_DEBUG_SG=y.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2007-11-12 13:55:25 +11:00
Rusty Russell
296f96fcfc Net driver using virtio 
The network driver uses two virtqueues: one for input packets and one
for output packets.  This has nice locking properties (ie. we don't do
any for recv vs send).

TODO:
	1) Big packets.
	2) Multi-client devices (maybe separate driver?).
	3) Resolve freeing of old xmit skbs (Christian Borntraeger)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: netdev@vger.kernel.org
 2007-10-23 15:49:54 +10:00