tcp: avoid dst->ops->check() call in tcp_v{4,6}_do_rcv()

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If incoming skb dst matches the socket cached one,
there is no need to call again dst->ops->check().

Network layer already validated the skb dst for us,
usually from tcp_v{4,6}_early_demux().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260306154322.1086539-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Eric Dumazet 2026-03-06 15:43:22 +00:00 • committed by Jakub Kicinski

parent 6927430735

commit 82f36517a1

2 changed files with 2 additions and 2 deletions

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2

net/ipv4/tcp_ipv4.c

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2

net/ipv6/tcp_ipv6.c

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