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| author |   Eric Dumazet <edumazet@google.com> | 2018-11-06 14:25:52 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-11-06 14:59:27 -0800 |
| commit | 0b215b9798640a542c526e3ae69dee83861a4aee (patch) | |
| tree | 8fd33e25e96051f31213de5f5f02ec2f03417a93 /net/core | |
| parent | net: skbuff.h: remove unnecessary unlikely() (diff) | |
| download | linux-dev-0b215b9798640a542c526e3ae69dee83861a4aee.tar.xz linux-dev-0b215b9798640a542c526e3ae69dee83861a4aee.zip | |
ipv6: gro: do not use slow memcmp() in ipv6_gro_receive()
ipv6_gro_receive() compares 34 bytes using slow memcmp(),
while handcoding with a couple of ipv6_addr_equal() is much faster.
Before this patch, "perf top -e cycles:pp -C <cpu>" would
see memcmp() using ~10% of cpu cycles on a 40Gbit NIC
receiving IPv6 TCP traffic.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
0 files changed, 0 insertions, 0 deletions