net/mlx5e: Fix concurrency issues between config flow and XSK

[linux.git] / drivers / net / ethernet / mellanox / mlx5 / core / en / xsk / setup.c

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c
index 631af8dee5171d67447e5eefac4809a115bb4e3e..c28cbae4233103fda64496357525f96a2dfac98e 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c
@@ -144,6 +144,7 @@ void mlx5e_close_xsk(struct mlx5e_channel *c)
 {
        clear_bit(MLX5E_CHANNEL_STATE_XSK, c->state);
        napi_synchronize(&c->napi);
+       synchronize_rcu(); /* Sync with the XSK wakeup. */
 
        mlx5e_close_rq(&c->xskrq);
        mlx5e_close_cq(&c->xskrq.cq);