linux

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History

Eric Dumazet 87fd308cfc 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>

2010-07-14 15:33:27 -07:00

datagram.c

net: fix lock_sock_bh/unlock_sock_bh

2010-05-27 00:30:53 -07:00

dev_addr_lists.c

…

dev.c

net: skb_tx_hash() fix relative to skb_orphan_try()

2010-07-14 15:33:27 -07:00

drop_monitor.c

…

dst.c