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| author | Jason Wang <jasowang@redhat.com> | 2015-08-27 14:53:06 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-27 15:51:45 -0700 |
| commit | 547c890cfd26010e01b3faf98f29ca9b2252c8d8 (patch) | |
| tree | 9d4c1428dff69ecf799eeb0e313a72257551a3b1 /net/core | |
| parent | 5e0aa59728854837a7256e21644596f21a16ce0f (diff) | |
| download | linux-547c890cfd26010e01b3faf98f29ca9b2252c8d8.tar.gz linux-547c890cfd26010e01b3faf98f29ca9b2252c8d8.tar.bz2 linux-547c890cfd26010e01b3faf98f29ca9b2252c8d8.zip | |
virtio-net: avoid unnecessary sg initialzation
Usually an skb does not have up to MAX_SKB_FRAGS frags. So no need to
initialize the unuse part of sg. This patch initialize the sg based on
the real number it will used:
- during xmit, it could be inferred from nr_frags and can_push.
- for small receive buffer, it will also be 2.
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
0 files changed, 0 insertions, 0 deletions