X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=drivers%2Fnet%2Fethernet%2Fmellanox%2Fmlx4%2Fen_cq.c;h=e3be7e44ff51fcc2947df46f2ff9ff7326e42eb6;hb=0c183d92b20b5c84ca655b45ef57b3318b83eb9e;hp=132cea655920d636c2e22fd2f110d163a421b8f3;hpb=d85486d47123961bd8b08e94f6d4886c59a1fd76;p=cascardo%2Flinux.git

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_cq.c b/drivers/net/ethernet/mellanox/mlx4/en_cq.c
index 132cea655920..e3be7e44ff51 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_cq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_cq.c
@@ -127,7 +127,15 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
 		/* For TX we use the same irq per
 		ring we assigned for the RX    */
 		struct mlx4_en_cq *rx_cq;
-
+		int xdp_index;
+
+		/* The xdp tx irq must align with the rx ring that forwards to
+		 * it, so reindex these from 0. This should only happen when
+		 * tx_ring_num is not a multiple of rx_ring_num.
+		 */
+		xdp_index = (priv->xdp_ring_num - priv->tx_ring_num) + cq_idx;
+		if (xdp_index >= 0)
+			cq_idx = xdp_index;
 		cq_idx = cq_idx % priv->rx_ring_num;
 		rx_cq = priv->rx_cq[cq_idx];
 		cq->vector = rx_cq->vector;