[dpdk-stable] [PATCH] net/mlx5: fix compilation for rdma-core v19

[Shahaf Shuler]

[ backported from upstream commit 06b1fe3f6d2121009b3b879e92b8cca25d4c0c42 ]

The flow counter support introduced by
commit 9a761de8ea14 ("net/mlx5: flow counter support") was intend to
work only with MLNX_OFED_4.2 as the upstream rdma-core
libraries were lack such support.

On rdma-core v19 the support for the flow counters was added but with
different user APIs, hence causing compilation issues on the PMD.

This patch fix the compilation errors by forcing the flow counters
to be enabled only with MLNX_OFED APIs.
Once MLNX_OFED and rdma-core APIs will be aligned, a proper patch to
support the new API will be submitted.

Fixes: 9a761de8ea14 ("net/mlx5: flow counter support")
Cc: stable at dpdk.org
Cc: orika at mellanox.com

Reported-by: Stephen Hemminger <stephen at networkplumber.org>
Reported-by: Ferruh Yigit <ferruh.yigit at intel.com>
Signed-off-by: Shahaf Shuler <shahafs at mellanox.com>
---
 drivers/net/mlx5/Makefile    |  2 +-
 drivers/net/mlx5/mlx5_flow.c | 13 +++++++------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile
index 201f6f0..b84a2a5 100644
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile
@@ -162,7 +162,7 @@ mlx5_autoconf.h.new: $(RTE_SDK)/buildtools/auto-config-h.sh
 	$Q sh -- '$<' '$@' \
 		HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT \
 		infiniband/verbs.h \
-		enum IBV_FLOW_SPEC_ACTION_COUNT \
+		type 'struct ibv_counter_set_init_attr' \
 		$(AUTOCONF_OUTPUT)
 
 # Create mlx5_autoconf.h or update it in case it differs from the new one.
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index f48b689..33e64ad 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -35,12 +35,6 @@
 #define MLX5_IPV4 4
 #define MLX5_IPV6 6
 
-#ifndef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
-struct ibv_flow_spec_counter_action {
-	int dummy;
-};
-#endif
-
 /* Dev ops structure defined in mlx5.c */
 extern const struct eth_dev_ops mlx5_dev_ops;
 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
@@ -837,10 +831,17 @@ mlx5_flow_convert_items_validate(const struct rte_flow_item items[],
 				sizeof(struct ibv_flow_spec_action_tag);
 	}
 	if (parser->count) {
+#ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
 		unsigned int size = sizeof(struct ibv_flow_spec_counter_action);
 
 		for (i = 0; i != hash_rxq_init_n; ++i)
 			parser->queue[i].offset += size;
+#else
+		rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
+				   items,
+				   "Count action supported only on "
+				   "MLNX_OFED_4.2 and above");
+#endif
 	}
 	return 0;
 exit_item_not_supported:
-- 
2.7.4