common/mlx5/linux: add glue function to query WQ

When Rx queue is created by VERBS API ibv_create_wq there is a dedicated
rdma-core API to query an information about this WQ(Work Queue).

VERBS WQ querying is needed for PMD cases which combine VERBS objects
with DevX objects.

Next feature to use this glue function is the HW queue counters.

Cc: stable@dpdk.org
Signed-off-by: Matan Azrad <matan@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>

diff --git a/drivers/common/mlx5/linux/mlx5_glue.c b/drivers/common/mlx5/linux/mlx5_glue.c
index 8146c79287945699cb1bc67d42c37bef9a809d31..964f7e74efa32c3d7c702eb83d822b2e02ec4466 100644 (file)
--- a/drivers/common/mlx5/linux/mlx5_glue.c
+++ b/drivers/common/mlx5/linux/mlx5_glue.c
@@ -1067,6 +1067,23 @@ mlx5_glue_devx_qp_query(struct ibv_qp *qp,
 #endif
 }
 
+static int
+mlx5_glue_devx_wq_query(struct ibv_wq *wq, const void *in, size_t inlen,
+                       void *out, size_t outlen)
+{
+#ifdef HAVE_IBV_DEVX_QP
+       return mlx5dv_devx_wq_query(wq, in, inlen, out, outlen);
+#else
+       (void)wq;
+       (void)in;
+       (void)inlen;
+       (void)out;
+       (void)outlen;
+       errno = ENOTSUP;
+       return errno;
+#endif
+}
+
 static int
 mlx5_glue_devx_port_query(struct ibv_context *ctx,
                          uint32_t port_num,
@@ -1403,6 +1420,7 @@ const struct mlx5_glue *mlx5_glue = &(const struct mlx5_glue) {
        .devx_umem_reg = mlx5_glue_devx_umem_reg,
        .devx_umem_dereg = mlx5_glue_devx_umem_dereg,
        .devx_qp_query = mlx5_glue_devx_qp_query,
+       .devx_wq_query = mlx5_glue_devx_wq_query,
        .devx_port_query = mlx5_glue_devx_port_query,
        .dr_dump_domain = mlx5_glue_dr_dump_domain,
        .dr_reclaim_domain_memory = mlx5_glue_dr_reclaim_domain_memory,

diff --git a/drivers/common/mlx5/linux/mlx5_glue.h b/drivers/common/mlx5/linux/mlx5_glue.h
index 8be446a9022de13d28382ef9f9dcb76bcb046aad..9e385be957c6d6ec950b6d8950c9e84078bc107b 100644 (file)
--- a/drivers/common/mlx5/linux/mlx5_glue.h
+++ b/drivers/common/mlx5/linux/mlx5_glue.h
@@ -307,6 +307,8 @@ struct mlx5_glue {
        int (*devx_qp_query)(struct ibv_qp *qp,
                             const void *in, size_t inlen,
                             void *out, size_t outlen);
+       int (*devx_wq_query)(struct ibv_wq *wq, const void *in, size_t inlen,
+                            void *out, size_t outlen);
        int (*devx_port_query)(struct ibv_context *ctx,
                               uint32_t port_num,
                               struct mlx5dv_devx_port *mlx5_devx_port);