From: Artemy Kovalyov <artemyko@xxxxxxxxxxxx>
Each steering flow may be marked with a tag which exposed in the
completion. Implement read_flow_tag which allows reading the flow tag
from the work completion.
Signed-off-by: Moses Reuben <mosesr@xxxxxxxxxxxx>
Signed-off-by: Artemy Kovalyov <artemyko@xxxxxxxxxxxx>
Reviewed-by: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Reviewed-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
providers/mlx5/cq.c | 9 +++++++++
providers/mlx5/mlx5.h | 4 ++++
providers/mlx5/verbs.c | 3 ++-
3 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/providers/mlx5/cq.c b/providers/mlx5/cq.c
index 85d0c33..2e8b584 100644
--- a/providers/mlx5/cq.c
+++ b/providers/mlx5/cq.c
@@ -1196,6 +1196,13 @@ static inline uint16_t mlx5_cq_read_wc_cvlan(struct ibv_cq_ex *ibcq)
return be16toh(cq->cqe64->vlan_info);
}
+static inline uint32_t mlx5_cq_read_flow_tag(struct ibv_cq_ex *ibcq)
+{
+ struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
+
+ return be32toh(cq->cqe64->sop_drop_qpn) & MLX5_FLOW_TAG_MASK;
+}
+
#define BIT(i) (1UL << (i))
#define SINGLE_THREADED BIT(0)
@@ -1270,6 +1277,8 @@ void mlx5_cq_fill_pfns(struct mlx5_cq *cq, const struct ibv_cq_init_attr_ex *cq_
cq->ibv_cq.read_completion_ts = mlx5_cq_read_wc_completion_ts;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_CVLAN)
cq->ibv_cq.read_cvlan = mlx5_cq_read_wc_cvlan;
+ if (cq_attr->wc_flags & IBV_WC_EX_WITH_FLOW_TAG)
+ cq->ibv_cq.read_flow_tag = mlx5_cq_read_flow_tag;
}
int mlx5_arm_cq(struct ibv_cq *ibvcq, int solicited)
diff --git a/providers/mlx5/mlx5.h b/providers/mlx5/mlx5.h
index bb383d4..0de40a8 100644
--- a/providers/mlx5/mlx5.h
+++ b/providers/mlx5/mlx5.h
@@ -184,6 +184,10 @@ enum mlx5_vendor_cap_flags {
MLX5_VENDOR_CAP_FLAGS_MPW = 1 << 0,
};
+enum {
+ MLX5_FLOW_TAG_MASK = 0x000fffff,
+};
+
struct mlx5_resource {
enum mlx5_rsc_type type;
uint32_t rsn;
diff --git a/providers/mlx5/verbs.c b/providers/mlx5/verbs.c
index b7a8502..f0e4aab 100644
--- a/providers/mlx5/verbs.c
+++ b/providers/mlx5/verbs.c
@@ -328,7 +328,8 @@ static int qp_sig_enabled(void)
enum {
CREATE_CQ_SUPPORTED_WC_FLAGS = IBV_WC_STANDARD_FLAGS |
IBV_WC_EX_WITH_COMPLETION_TIMESTAMP |
- IBV_WC_EX_WITH_CVLAN
+ IBV_WC_EX_WITH_CVLAN |
+ IBV_WC_EX_WITH_FLOW_TAG
};
enum {
--
1.8.3.1
--
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