[PATCH 15/17] mlx5: enable multi packet send WR in TX CQ
From: Adrien Mazarguil <hidden>
Date: 2015-10-05 17:55:46
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
For adapters that support it, this flag improves performance outside of VF context. Signed-off-by: Adrien Mazarguil <redacted> --- 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 54f1e89..6ced4ac 100644
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile@@ -116,6 +116,11 @@ mlx5_autoconf.h: $(RTE_SDK)/scripts/auto-config-h.sh HAVE_EXP_QUERY_DEVICE \ infiniband/verbs.h \ type 'struct ibv_exp_device_attr' $(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