tcp_metrics: annotate data-races around tm->tcpm_stamp

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[ Upstream commit 949ad62a5d ]

tm->tcpm_stamp can be read or written locklessly.

Add needed READ_ONCE()/WRITE_ONCE() to document this.

Also constify tcpm_check_stamp() dst argument.

Fixes: 51c5d0c4b1 ("tcp: Maintain dynamic metrics in local cache.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20230802131500.1478140-3-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Eric Dumazet 2023-08-02 13:14:56 +00:00 • committed by Greg Kroah-Hartman

parent f47cff05d3

commit cbe9433586

1 changed files with 13 additions and 6 deletions

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net/ipv4/tcp_metrics.c

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