Revision 1a50cf9a67ff2241c2949d30bc11c8dd4280eef8 authored by Maxim Mikityanskiy on 22 October 2020, 09:49:51 UTC, committed by Saeed Mahameed on 05 November 2020, 20:17:06 UTC
rq->xdp_prog is RCU-protected and should be accessed only with
rcu_access_pointer for the NULL check in mlx5e_poll_rx_cq.
rq->xdp_prog may change on the fly only from one non-NULL value to
another non-NULL value, so the checks in mlx5e_xdp_handle and
mlx5e_poll_rx_cq will have the same result during one NAPI cycle,
meaning that no additional synchronization is needed.
Fixes: fe45386a2082 ("net/mlx5e: Use RCU to protect rq->xdp_prog")
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
1 parent c5eb51a
| File | Mode | Size |
|---|---|---|
| fallbacks | ||
| atomic-tbl.sh | -rwxr-xr-x | 3.3 KB |
| atomics.tbl | -rwxr-xr-x | 1.1 KB |
| check-atomics.sh | -rwxr-xr-x | 757 bytes |
| gen-atomic-fallback.sh | -rwxr-xr-x | 5.2 KB |
| gen-atomic-instrumented.sh | -rwxr-xr-x | 4.6 KB |
| gen-atomic-long.sh | -rwxr-xr-x | 2.2 KB |
| gen-atomics.sh | -rw-r--r-- | 680 bytes |
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