net/mlx5: check kernel support for VF LAG bonding

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@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>

diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile
index d11ad4b..88515c0 100644 (file)
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile
@@ -168,6 +168,11 @@ mlx5_autoconf.h.new: $(RTE_SDK)/buildtools/auto-config-h.sh
                infiniband/mlx5dv.h \
                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 \

diff --git a/drivers/net/mlx5/meson.build b/drivers/net/mlx5/meson.build
index 1cd7fbb..142240a 100644 (file)
--- a/drivers/net/mlx5/meson.build
+++ b/drivers/net/mlx5/meson.build
@@ -118,6 +118,8 @@ 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 1fe7150..7f19133 100644 (file)
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -2369,6 +2369,19 @@ mlx5_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
                        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.