The link layer field is to be used in few flows
among them fast path operations such as CQ polling.
Signed-off-by: Or Gerlitz <ogerl...@mellanox.com>
---
src/mlx4.h | 2 ++
src/verbs.c | 8 ++++++++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/src/mlx4.h b/src/mlx4.h
index 0ad838d..f92611f 100644
--- a/src/mlx4.h
+++ b/src/mlx4.h
@@ -223,6 +223,8 @@ struct mlx4_qp {
uint32_t *db;
struct mlx4_wq rq;
+
+ uint8_t link_layer;
};
struct mlx4_av {
diff --git a/src/verbs.c b/src/verbs.c
index 199d107..3c8dbaf 100644
--- a/src/verbs.c
+++ b/src/verbs.c
@@ -522,6 +522,14 @@ int mlx4_modify_qp(struct ibv_qp *qp, struct ibv_qp_attr
*attr,
{
struct ibv_modify_qp cmd;
int ret;
+ struct ibv_port_attr port_attr;
+ struct mlx4_qp *mqp = to_mqp(qp);
+
+ if (attr_mask & IBV_QP_PORT) {
+ if (ibv_query_port(qp->pd->context, attr->port_num, &port_attr))
+ return -1;
+ mqp->link_layer = port_attr.link_layer;
+ }
if (qp->state == IBV_QPS_RESET &&
attr_mask & IBV_QP_STATE &&
--
1.7.1
--
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