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Message-ID: <20221204141632.201932-9-shayd@nvidia.com>
Date: Sun, 4 Dec 2022 16:16:32 +0200
From: Shay Drory <shayd@...dia.com>
To: <netdev@...r.kernel.org>, <kuba@...nel.org>, <davem@...emloft.net>
CC: <danielj@...dia.com>, <yishaih@...dia.com>, <jiri@...dia.com>,
<saeedm@...dia.com>, <parav@...dia.com>,
Shay Drory <shayd@...dia.com>
Subject: [PATCH net-next V3 8/8] net/mlx5: E-Switch, Implement devlink port function cmds to control migratable
Implement devlink port function commands to enable / disable migratable.
This is used to control the migratable capability of the device.
Signed-off-by: Shay Drory <shayd@...dia.com>
Reviewed-by: Mark Bloch <mbloch@...dia.com>
Acked-by: Saeed Mahameed <saeedm@...dia.com>
---
.../device_drivers/ethernet/mellanox/mlx5.rst | 8 ++
.../net/ethernet/mellanox/mlx5/core/devlink.c | 2 +
.../net/ethernet/mellanox/mlx5/core/eswitch.c | 8 ++
.../net/ethernet/mellanox/mlx5/core/eswitch.h | 5 +
.../mellanox/mlx5/core/eswitch_offloads.c | 100 ++++++++++++++++++
5 files changed, 123 insertions(+)
diff --git a/Documentation/networking/device_drivers/ethernet/mellanox/mlx5.rst b/Documentation/networking/device_drivers/ethernet/mellanox/mlx5.rst
index 8b8f95d1293a..6969652f593c 100644
--- a/Documentation/networking/device_drivers/ethernet/mellanox/mlx5.rst
+++ b/Documentation/networking/device_drivers/ethernet/mellanox/mlx5.rst
@@ -364,6 +364,14 @@ PCI devices/SF.
mlx5 driver support devlink port function attr mechanism to setup RoCE
capability. (refer to Documentation/networking/devlink/devlink-port.rst)
+migratable capability setup
+---------------------------
+User who wants mlx5 PCI VFs to be able to perform live migration need to
+explicitly enable the VF migratable capability.
+
+mlx5 driver support devlink port function attr mechanism to setup migratable
+capability. (refer to Documentation/networking/devlink/devlink-port.rst)
+
SF state setup
--------------
To use the SF, the user must activate the SF using the SF function state
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
index 992cdb3b7cc8..a674bf0b6046 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
@@ -316,6 +316,8 @@ static const struct devlink_ops mlx5_devlink_ops = {
.rate_leaf_parent_set = mlx5_esw_devlink_rate_parent_set,
.port_function_roce_get = mlx5_devlink_port_function_roce_get,
.port_function_roce_set = mlx5_devlink_port_function_roce_set,
+ .port_function_mig_get = mlx5_devlink_port_function_mig_get,
+ .port_function_mig_set = mlx5_devlink_port_function_mig_set,
#endif
#ifdef CONFIG_MLX5_SF_MANAGER
.port_new = mlx5_devlink_sf_port_new,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 001fb1e62135..527e4bffda8d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -794,6 +794,14 @@ static int mlx5_esw_vport_caps_get(struct mlx5_eswitch *esw, struct mlx5_vport *
hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
vport->info.roce_enabled = MLX5_GET(cmd_hca_cap, hca_caps, roce);
+ memset(query_ctx, 0, query_out_sz);
+ err = mlx5_vport_get_other_func_cap(esw->dev, vport->vport, query_ctx,
+ MLX5_CAP_GENERAL_2);
+ if (err)
+ goto out_free;
+
+ hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
+ vport->info.mig_enabled = MLX5_GET(cmd_hca_cap_2, hca_caps, migratable);
out_free:
kfree(query_ctx);
return err;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index 71f27fb35c49..8625b97411a9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -154,6 +154,7 @@ struct mlx5_vport_info {
u8 spoofchk: 1;
u8 trusted: 1;
u8 roce_enabled: 1;
+ u8 mig_enabled: 1;
};
/* Vport context events */
@@ -509,6 +510,10 @@ int mlx5_devlink_port_function_hw_addr_get(struct devlink_port *port,
int mlx5_devlink_port_function_hw_addr_set(struct devlink_port *port,
const u8 *hw_addr, int hw_addr_len,
struct netlink_ext_ack *extack);
+int mlx5_devlink_port_function_mig_get(struct devlink_port *port, bool *is_enabled,
+ struct netlink_ext_ack *extack);
+int mlx5_devlink_port_function_mig_set(struct devlink_port *port, bool enable,
+ struct netlink_ext_ack *extack);
int mlx5_devlink_port_function_roce_get(struct devlink_port *port, bool *is_enabled,
struct netlink_ext_ack *extack);
int mlx5_devlink_port_function_roce_set(struct devlink_port *port, bool enable,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index f258fd7e27a8..ce38d9c0ad71 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -4038,6 +4038,106 @@ mlx5_devlink_port_function_get_vport(struct devlink_port *port, struct mlx5_eswi
return mlx5_eswitch_get_vport(esw, vport_num);
}
+int mlx5_devlink_port_function_mig_get(struct devlink_port *port, bool *is_enabled,
+ struct netlink_ext_ack *extack)
+{
+ struct mlx5_eswitch *esw;
+ struct mlx5_vport *vport;
+ int err = -EOPNOTSUPP;
+
+ esw = mlx5_devlink_eswitch_get(port->devlink);
+ if (IS_ERR(esw))
+ return PTR_ERR(esw);
+
+ if (!MLX5_CAP_GEN(esw->dev, migration)) {
+ NL_SET_ERR_MSG_MOD(extack, "Device doesn't support migration");
+ return err;
+ }
+
+ vport = mlx5_devlink_port_function_get_vport(port, esw);
+ if (IS_ERR(vport)) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid port");
+ return PTR_ERR(vport);
+ }
+
+ mutex_lock(&esw->state_lock);
+ if (vport->enabled) {
+ *is_enabled = vport->info.mig_enabled;
+ err = 0;
+ }
+ mutex_unlock(&esw->state_lock);
+ return err;
+}
+
+int mlx5_devlink_port_function_mig_set(struct devlink_port *port, bool enable,
+ struct netlink_ext_ack *extack)
+{
+ int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
+ struct mlx5_eswitch *esw;
+ struct mlx5_vport *vport;
+ void *query_ctx;
+ void *hca_caps;
+ int err = -EOPNOTSUPP;
+
+ esw = mlx5_devlink_eswitch_get(port->devlink);
+ if (IS_ERR(esw))
+ return PTR_ERR(esw);
+
+ if (!MLX5_CAP_GEN(esw->dev, migration)) {
+ NL_SET_ERR_MSG_MOD(extack, "Device doesn't support migration");
+ return err;
+ }
+
+ vport = mlx5_devlink_port_function_get_vport(port, esw);
+ if (IS_ERR(vport)) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid port");
+ return PTR_ERR(vport);
+ }
+
+ mutex_lock(&esw->state_lock);
+ if (!vport->enabled) {
+ NL_SET_ERR_MSG_MOD(extack, "Eswitch vport is disabled");
+ goto out;
+ }
+
+ if (vport->info.mig_enabled == enable) {
+ err = 0;
+ goto out;
+ }
+
+ query_ctx = kzalloc(query_out_sz, GFP_KERNEL);
+ if (!query_ctx) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ err = mlx5_vport_get_other_func_cap(esw->dev, vport->vport, query_ctx,
+ MLX5_CAP_GENERAL_2);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Failed getting HCA caps");
+ goto out_free;
+ }
+
+ hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
+ memcpy(hca_caps, MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability),
+ MLX5_UN_SZ_BYTES(hca_cap_union));
+ MLX5_SET(cmd_hca_cap_2, hca_caps, migratable, 1);
+
+ err = mlx5_vport_set_other_func_cap(esw->dev, hca_caps, vport->vport,
+ MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE2);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Failed setting HCA migratable cap");
+ goto out_free;
+ }
+
+ vport->info.mig_enabled = enable;
+
+out_free:
+ kfree(query_ctx);
+out:
+ mutex_unlock(&esw->state_lock);
+ return err;
+}
int mlx5_devlink_port_function_roce_get(struct devlink_port *port, bool *is_enabled,
struct netlink_ext_ack *extack)
{
--
2.38.1
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