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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-07-13 05:24:20 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-07-14 15:33:27 -0700 |
| commit | 87fd308cfc6b2e880bf717a740bd5c58d2aed10c (patch) | |
| tree | 15c27522669b08a6d26efbcd447abf3d78ad13fb /fs/devpts | |
| parent | 3a047bf87b1b6f69c62ab9fb28072c639cb7e2fa (diff) | |
| download | linux-87fd308cfc6b2e880bf717a740bd5c58d2aed10c.tar.bz2 | |
net: skb_tx_hash() fix relative to skb_orphan_try()
commit fc6055a5ba31e2 (net: Introduce skb_orphan_try()) added early
orphaning of skbs.
This unfortunately added a performance regression in skb_tx_hash() in
case of stacked devices (bonding, vlans, ...)
Since skb->sk is now NULL, we cannot access sk->sk_hash anymore to
spread tx packets to multiple NIC queues on multiqueue devices.
skb_tx_hash() in this case only uses skb->protocol, same value for all
flows.
skb_orphan_try() can copy sk->sk_hash into skb->rxhash and skb_tx_hash()
can use this saved sk_hash value to compute its internal hash value.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/devpts')
0 files changed, 0 insertions, 0 deletions