[dpdk-dev] [PATCH v2 14/16] mlx5: enable multi packet send WR in TX CQ
Adrien Mazarguil
adrien.mazarguil at 6wind.com
Fri Oct 30 19:55:17 CET 2015
For adapters that support it, this flag improves performance outside of VF
context.
Signed-off-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>
---
drivers/net/mlx5/Makefile | 5 +++++
drivers/net/mlx5/mlx5_txq.c | 7 +++++++
2 files changed, 12 insertions(+)
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) {
--
2.1.0
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