[dpdk-dev] [PATCH] net/mlx4: fix restriction on TCP/UDP flow rules

Adrien Mazarguil adrien.mazarguil at 6wind.com
Fri Oct 20 14:39:58 CEST 2017


The code as currently written requires TCP/UDP source and destination ports
to be always specified.

No such restriction is enforced by hardware; all TCP and UDP traffic can be
matched by providing an empty mask for these fields.

Fixes: 680d5280c20b ("net/mlx4: refactor flow item validation code")

Signed-off-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>
---
 drivers/net/mlx4/mlx4_flow.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx4/mlx4_flow.c b/drivers/net/mlx4/mlx4_flow.c
index 5af6efb..a0f431b 100644
--- a/drivers/net/mlx4/mlx4_flow.c
+++ b/drivers/net/mlx4/mlx4_flow.c
@@ -404,7 +404,7 @@ mlx4_flow_merge_udp(struct rte_flow *flow,
 	struct ibv_flow_spec_tcp_udp *udp;
 	const char *msg;
 
-	if (!mask ||
+	if (mask &&
 	    ((uint16_t)(mask->hdr.src_port + 1) > UINT16_C(1) ||
 	     (uint16_t)(mask->hdr.dst_port + 1) > UINT16_C(1))) {
 		msg = "mlx4 does not support matching partial UDP fields";
@@ -464,7 +464,7 @@ mlx4_flow_merge_tcp(struct rte_flow *flow,
 	struct ibv_flow_spec_tcp_udp *tcp;
 	const char *msg;
 
-	if (!mask ||
+	if (mask &&
 	    ((uint16_t)(mask->hdr.src_port + 1) > UINT16_C(1) ||
 	     (uint16_t)(mask->hdr.dst_port + 1) > UINT16_C(1))) {
 		msg = "mlx4 does not support matching partial TCP fields";
-- 
2.1.4


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