Eric Dumazet 5c3b74a92a rfs: annotate lockless accesses to RFS sock flow table
Add READ_ONCE()/WRITE_ONCE() on accesses to the sock flow table.

This also prevents a (smart ?) compiler to remove the condition in:

if (table->ents[index] != newval)
        table->ents[index] = newval;

We need the condition to avoid dirtying a shared cache line.

Fixes: fec5e652e58f ("rfs: Receive Flow Steering")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-06-07 10:08:45 +01:00
..
2023-05-05 19:12:01 -07:00
2023-05-17 21:27:30 -07:00
2023-02-21 18:24:12 -08:00
2023-06-06 21:07:43 -07:00
2023-06-06 20:59:08 -07:00
2023-03-16 17:34:40 -07:00
2023-06-05 15:15:57 +01:00
2023-04-13 16:43:38 -07:00
2023-05-16 20:52:35 -07:00