net/mlx5: E-Switch, Avoid setup attempt if not being e-switch manager

[ Upstream commit 0efc8562491b7d36f6bbc4fbc8f3348cb6641e9c ]

In smartnic env, the host (PF) driver might not be an e-switch
manager, hence the FW will err on driver attempts to deal with
setting/unsetting the eswitch and as a result the overall setup
of sriov will fail.

Fix that by avoiding the operation if e-switch management is not
allowed for this driver instance. While here, move to use the
correct name for the esw manager capability name.

Fixes: 81848731ff40 ('net/mlx5: E-Switch, Add SR-IOV (FDB) support')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Guy Kushnir <guyk@mellanox.com>
Reviewed-by: Eli Cohen <eli@melloanox.com>
Tested-by: Eli Cohen <eli@melloanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 0e70cd6d8bc83245532358285243acc7023c9f62..281911698f72fbff76be3f2d98d6b69ddab3438e 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -726,7 +726,7 @@ static bool mlx5e_is_vf_vport_rep(struct mlx5e_priv *priv)
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep;
 
-       if (!MLX5_CAP_GEN(priv->mdev, eswitch_flow_table))
+       if (!MLX5_ESWITCH_MANAGER(priv->mdev))
                return false;
 
        rep = rpriv->rep;

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 82e37250ed01c4c65a4e6ed5a4486027bc613137..667415301066e2de102cf512d3beecf879138eb9 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1535,7 +1535,7 @@ int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode)
        if (!ESW_ALLOWED(esw))
                return 0;
 
-       if (!MLX5_CAP_GEN(esw->dev, eswitch_flow_table) ||
+       if (!MLX5_ESWITCH_MANAGER(esw->dev) ||
            !MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, ft_support)) {
                esw_warn(esw->dev, "E-Switch FDB is not supported, aborting ...\n");
                return -EOPNOTSUPP;

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index 565c8b7a399af7559c910faabbec4e8d99738bb6..10bf770675f32aa24c7b005f8b786cc288bf9120 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -39,6 +39,8 @@
 #include <linux/mlx5/device.h>
 #include "lib/mpfs.h"
 
+#define MLX5_ESWITCH_MANAGER(mdev) MLX5_CAP_GEN(mdev, eswitch_manager)
+
 enum {
        SRIOV_NONE,
        SRIOV_LEGACY,

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index 33e5ff081e36ee14e58558bbd5e4e18ae1e4ea8f..dd05cf14884543db45abdf932645d685e4ee6714 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -36,6 +36,7 @@
 #include "mlx5_core.h"
 #include "fs_core.h"
 #include "fs_cmd.h"
+#include "eswitch.h"
 #include "diag/fs_tracepoint.h"
 
 #define INIT_TREE_NODE_ARRAY_SIZE(...) (sizeof((struct init_tree_node[]){__VA_ARGS__}) /\
@@ -2211,7 +2212,7 @@ int mlx5_init_fs(struct mlx5_core_dev *dev)
                        goto err;
        }
 
-       if (MLX5_CAP_GEN(dev, eswitch_flow_table)) {
+       if (MLX5_ESWITCH_MANAGER(dev)) {
                if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, ft_support)) {
                        err = init_fdb_root_ns(steering);
                        if (err)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw.c b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
index 2c71557d1cee724c6b12b2033133060661dabbfc..d69897a1e2cedbe53abffc35cf6d245387b273d4 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
@@ -34,6 +34,7 @@
 #include <linux/mlx5/cmd.h>
 #include <linux/module.h>
 #include "mlx5_core.h"
+#include "eswitch.h"
 #include "../../mlxfw/mlxfw.h"
 
 static int mlx5_cmd_query_adapter(struct mlx5_core_dev *dev, u32 *out,
@@ -152,13 +153,13 @@ int mlx5_query_hca_caps(struct mlx5_core_dev *dev)
        }
 
        if (MLX5_CAP_GEN(dev, vport_group_manager) &&
-           MLX5_CAP_GEN(dev, eswitch_flow_table)) {
+           MLX5_ESWITCH_MANAGER(dev)) {
                err = mlx5_core_get_caps(dev, MLX5_CAP_ESWITCH_FLOW_TABLE);
                if (err)
                        return err;
        }
 
-       if (MLX5_CAP_GEN(dev, eswitch_flow_table)) {
+       if (MLX5_ESWITCH_MANAGER(dev)) {
                err = mlx5_core_get_caps(dev, MLX5_CAP_ESWITCH);
                if (err)
                        return err;

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sriov.c b/drivers/net/ethernet/mellanox/mlx5/core/sriov.c
index 2a8b529ce6dd176cbc29b9bb4b74cd1d1c48f671..a0674962f02c4d2a35d05c98f84436967703101c 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/sriov.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/sriov.c
@@ -88,6 +88,9 @@ static int mlx5_device_enable_sriov(struct mlx5_core_dev *dev, int num_vfs)
                return -EBUSY;
        }
 
+       if (!MLX5_ESWITCH_MANAGER(dev))
+               goto enable_vfs_hca;
+
        err = mlx5_eswitch_enable_sriov(dev->priv.eswitch, num_vfs, SRIOV_LEGACY);
        if (err) {
                mlx5_core_warn(dev,
@@ -95,6 +98,7 @@ static int mlx5_device_enable_sriov(struct mlx5_core_dev *dev, int num_vfs)
                return err;
        }
 
+enable_vfs_hca:
        for (vf = 0; vf < num_vfs; vf++) {
                err = mlx5_core_enable_hca(dev, vf + 1);
                if (err) {
@@ -140,7 +144,8 @@ static void mlx5_device_disable_sriov(struct mlx5_core_dev *dev)
        }
 
 out:
-       mlx5_eswitch_disable_sriov(dev->priv.eswitch);
+       if (MLX5_ESWITCH_MANAGER(dev))
+               mlx5_eswitch_disable_sriov(dev->priv.eswitch);
 
        if (mlx5_wait_for_vf_pages(dev))
                mlx5_core_warn(dev, "timeout reclaiming VFs pages\n");

diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index f3765155fa4d9a61266848fc482d467d8693c897..1d793d86d55fa1ba444fd64cc417cdd9071ecaf8 100644 (file)
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -857,7 +857,7 @@ struct mlx5_ifc_cmd_hca_cap_bits {
        u8         reserved_at_1a4[0x1];
        u8         ets[0x1];
        u8         nic_flow_table[0x1];
-       u8         eswitch_flow_table[0x1];
+       u8         eswitch_manager[0x1];
        u8         early_vf_enable[0x1];
        u8         mcam_reg[0x1];
        u8         pcam_reg[0x1];