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| author |   Shirley Ma <mashirle@us.ibm.com> | 2010-01-29 03:20:04 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-02-02 15:55:42 -0800 |
| commit | 9ab86bbcf8be755256f0a5e994e0b38af6b4d399 (patch) | |
| tree | 6de61af79e9892d192acb5ba215b9331d88c8212 /drivers/net/sky2.h | |
| parent | virtio: Add ability to detach unused buffers from vrings (diff) | |
| download | linux-dev-9ab86bbcf8be755256f0a5e994e0b38af6b4d399.tar.xz linux-dev-9ab86bbcf8be755256f0a5e994e0b38af6b4d399.zip | |
virtio_net: Defer skb allocation in receive path Date: Wed, 13 Jan 2010 12:53:38 -0800
virtio_net receives packets from its pre-allocated vring buffers, then it
delivers these packets to upper layer protocols as skb buffs. So it's not
necessary to pre-allocate skb for each mergable buffer, then frees extra
skbs when buffers are merged into a large packet. This patch has deferred
skb allocation in receiving packets for both big packets and mergeable buffers
to reduce skb pre-allocations and skb frees. It frees unused buffers by calling
detach_unused_buf in vring, so recv skb queue is not needed.
Signed-off-by: Shirley Ma <xma@us.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions