net: ip_queue_rcv_skb() helper

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When queueing a skb to socket, we can immediately release its dst if
target socket do not use IP_CMSG_PKTINFO.

tcp_data_queue() can drop dst too.

This to benefit from a hot cache line and avoid the receiver, possibly
on another cpu, to dirty this cache line himself.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2010-04-28 15:31:51 -07:00 • committed by David S. Miller

parent 4b0b72f7dd

commit f84af32cbc

7 changed files with 22 additions and 4 deletions

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1

include/net/ip.h

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16

net/ipv4/ip_sockglue.c

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2

net/ipv4/raw.c

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1

net/ipv4/tcp_input.c

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2

net/ipv4/udp.c

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2

net/ipv6/raw.c

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2

net/ipv6/udp.c

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