[dpdk-dev] [PATCH] net/mlx5: return RSS hash result in mbuf

[Nelio Laranjeiro]

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
---
 drivers/net/mlx5/mlx5_rxq.c  | 1 +
 drivers/net/mlx5/mlx5_rxtx.c | 6 +++++-
 drivers/net/mlx5/mlx5_rxtx.h | 2 ++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index f6f4315..65c264b 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -926,6 +926,7 @@ rxq_ctrl_setup(struct rte_eth_dev *dev, struct rxq_ctrl 
*rxq_ctrl,
                .rxq = {
                        .elts_n = log2above(desc),
                        .mp = mp,
+                       .rss_hash = !!(priv->rxqs_n > 1),
                },
        };
        struct ibv_exp_wq_attr mod;
diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index b91b644..17ae5e4 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -1338,12 +1338,16 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, 
uint16_t pkts_n)
                        /* Update packet information. */
                        pkt->packet_type = 0;
                        pkt->ol_flags = 0;
+                       if (rxq->rss_hash) {
+                               pkt->hash.rss = ntohl(cqe->rx_hash_res);
+                               pkt->ol_flags = PKT_RX_RSS_HASH;
+                       }
                        if (rxq->csum | rxq->csum_l2tun | rxq->vlan_strip |
                            rxq->crc_present) {
                                if (rxq->csum) {
                                        pkt->packet_type =
                                                rxq_cq_to_pkt_type(cqe);
-                                       pkt->ol_flags =
+                                       pkt->ol_flags |=
                                                rxq_cq_to_ol_flags(rxq, cqe);
                                }
                                if (cqe->l4_hdr_type_etc &
diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
index 9828aef..e813f38 100644
--- a/drivers/net/mlx5/mlx5_rxtx.h
+++ b/drivers/net/mlx5/mlx5_rxtx.h
@@ -113,6 +113,8 @@ struct rxq {
        unsigned int cqe_n:4; /* Log 2 of CQ elements. */
        unsigned int elts_n:4; /* Log 2 of Mbufs. */
        unsigned int port_id:8;
+       unsigned int rss_hash:1; /* RSS hash result is enabled. */
+       unsigned int :9; /* Remaining bits. */
        volatile uint32_t *rq_db;
        volatile uint32_t *cq_db;
        uint16_t rq_ci;
-- 
2.1.4