ipv6: lockless IPV6_ADDR_PREFERENCES implementation

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We have data-races while reading np->srcprefs

Switch the field to a plain byte, add READ_ONCE()
and WRITE_ONCE() annotations where needed,
and IPV6_ADDR_PREFERENCES setsockopt() can now be lockless.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20230918142321.1794107-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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Eric Dumazet 2023-09-18 14:23:21 +00:00 • committed by Paolo Abeni

parent 6a23c555f7

commit fa17a6d8a5

6 changed files with 22 additions and 28 deletions

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5

include/net/ip6_route.h

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20

include/net/ipv6.h

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