[dpdk-dev] [PATCH 06/12] net/mlx5: check the kernel support for VF LAG bonding

[Viacheslav Ovsiienko]

If bonding Infiniband device is found the unified E-Switch
is supposed and the extra rdma-core/kernel support is needed
to retrieve vport indices. The patch introduces this feature
defines, bonding support check is added to probe routine.

Signed-off-by: Viacheslav Ovsiienko <viacheslavo at mellanox.com>
---
 drivers/net/mlx5/Makefile    |  5 +++++
 drivers/net/mlx5/meson.build |  2 ++
 drivers/net/mlx5/mlx5.c      | 13 +++++++++++++
 3 files changed, 20 insertions(+)

diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile
index 6c9d4b5..04de93a 100644
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile
@@ -170,6 +170,11 @@ mlx5_autoconf.h.new: $(RTE_SDK)/buildtools/auto-config-h.sh
 		func mlx5dv_dr_action_create_push_vlan \
 		$(AUTOCONF_OUTPUT)
 	$Q sh -- '$<' '$@' \
+		HAVE_MLX5DV_DR_DEVX_PORT \
+		infiniband/mlx5dv.h \
+		func mlx5dv_query_devx_port \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
 		HAVE_IBV_DEVX_OBJ \
 		infiniband/mlx5dv.h \
 		func mlx5dv_devx_obj_create \
diff --git a/drivers/net/mlx5/meson.build b/drivers/net/mlx5/meson.build
index fa68b54..f8e3cce 100644
--- a/drivers/net/mlx5/meson.build
+++ b/drivers/net/mlx5/meson.build
@@ -120,6 +120,8 @@ if build
 		'IBV_WQ_FLAGS_PCI_WRITE_END_PADDING' ],
 		[ 'HAVE_IBV_WQ_FLAG_RX_END_PADDING', 'infiniband/verbs.h',
 		'IBV_WQ_FLAG_RX_END_PADDING' ],
+		[ 'HAVE_MLX5DV_DR_DEVX_PORT', 'infiniband/mlx5dv.h',
+		'mlx5dv_query_devx_port' ],
 		[ 'HAVE_IBV_DEVX_OBJ', 'infiniband/mlx5dv.h',
 		'mlx5dv_devx_obj_create' ],
 		[ 'HAVE_IBV_FLOW_DEVX_COUNTERS', 'infiniband/mlx5dv.h',
diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 7c9fd54..25d1530 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -2373,6 +2373,19 @@ struct mlx5_dev_spawn_data {
 			goto exit;
 		}
 	}
+#ifndef HAVE_MLX5DV_DR_DEVX_PORT
+	if (bd >= 0) {
+		/*
+		 * This may happen if there is VF LAG kernel support and
+		 * application is compiled with older rdma_core library.
+		 */
+		DRV_LOG(ERR,
+			"No kernel/verbs support for VF LAG bonding found.");
+		rte_errno = ENOTSUP;
+		ret = -rte_errno;
+		goto exit;
+	}
+#endif
 	/*
 	 * Now we can determine the maximal
 	 * amount of devices to be spawned.
-- 
1.8.3.1