net: Increase NET_SKB_PAD to 64 bytes

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eth_type_trans() & get_rps_cpus() currently need two 64bytes cache
lines in packet to compute rxhash.

Increasing NET_SKB_PAD from 32 to 64 reduces the need to one cache
line only, and makes RPS faster.

NET_IP_ALIGN(2) + ethernet_header(14) + IP_header(20/40) + ports(8)

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

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Eric Dumazet 2010-05-06 21:58:51 -07:00 • committed by David S. Miller

parent d6bc0149d8

commit 18e8c134f4

1 changed files with 4 additions and 1 deletions

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5

include/linux/skbuff.h

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