diff mbox

[dpdk-dev,v2,14/16] mlx5: enable multi packet send WR in TX CQ

Message ID 1446231319-8185-15-git-send-email-adrien.mazarguil@6wind.com (mailing list archive)
State Accepted, archived
Headers

Commit Message

Adrien Mazarguil Oct. 30, 2015, 6:55 p.m. UTC 
  For adapters that support it, this flag improves performance outside of VF
context.

Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
 drivers/net/mlx5/Makefile   | 5 +++++
 drivers/net/mlx5/mlx5_txq.c | 7 +++++++
 2 files changed, 12 insertions(+)
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Patch

diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile
index 2f9f2b8..ae568e6 100644
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile
@@ -120,6 +120,11 @@  mlx5_autoconf.h: $(RTE_SDK)/scripts/auto-config-h.sh
 		HAVE_FLOW_SPEC_IPV6 \
 		infiniband/verbs.h \
 		type 'struct ibv_exp_flow_spec_ipv6' $(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_EXP_QP_BURST_CREATE_ENABLE_MULTI_PACKET_SEND_WR \
+		infiniband/verbs.h \
+		enum IBV_EXP_QP_BURST_CREATE_ENABLE_MULTI_PACKET_SEND_WR \
+		$(AUTOCONF_OUTPUT)
 
 mlx5.o: mlx5_autoconf.h
 
diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c
index a53b128..aa7581f 100644
--- a/drivers/net/mlx5/mlx5_txq.c
+++ b/drivers/net/mlx5/mlx5_txq.c
@@ -395,6 +395,13 @@  txq_setup(struct rte_eth_dev *dev, struct txq *txq, uint16_t desc,
 		.intf_scope = IBV_EXP_INTF_GLOBAL,
 		.intf = IBV_EXP_INTF_QP_BURST,
 		.obj = tmpl.qp,
+#ifdef HAVE_EXP_QP_BURST_CREATE_ENABLE_MULTI_PACKET_SEND_WR
+		/* Multi packet send WR can only be used outside of VF. */
+		.family_flags =
+			(!priv->vf ?
+			 IBV_EXP_QP_BURST_CREATE_ENABLE_MULTI_PACKET_SEND_WR :
+			 0),
+#endif
 	};
 	tmpl.if_qp = ibv_exp_query_intf(priv->ctx, &attr.params, &status);
 	if (tmpl.if_qp == NULL) {