tcp_metrics: annotate data-races around tm->tcpm_vals[]

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[ Upstream commit 8c4d04f6b4 ]

tm->tcpm_vals[] values can be read or written locklessly.

Add needed READ_ONCE()/WRITE_ONCE() to document this,
and force use of tcp_metric_get() and tcp_metric_set()

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>
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 13:14:58 +00:00 • committed by Greg Kroah-Hartman

parent d8064e2859

commit 6f27b67fc3

1 changed files with 14 additions and 9 deletions

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net/ipv4/tcp_metrics.c

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