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net/mlx5: E-Switch, Add control for encapsulation 

Implement the devlink e-switch encapsulation control set and get
callbacks. Apply the value set by the user on the switchdev offloads
mode when creating the fast FDB table where offloaded rules will be set.

Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Roi Dayan 2016-09-25 14:27:17 +03:00 committed by Saeed Mahameed
parent 1967ce6ea5
commit 7768d1971d
4 changed files with 71 additions and 2 deletions
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5
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
View File

@ -1806,6 +1806,11 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev)
esw->enabled_vports = 0;
esw->mode = SRIOV_NONE;
esw->offloads.inline_mode = MLX5_INLINE_MODE_NONE;
if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, encap) &&
MLX5_CAP_ESW_FLOWTABLE_FDB(dev, decap))
esw->offloads.encap = DEVLINK_ESWITCH_ENCAP_MODE_BASIC;
else
esw->offloads.encap = DEVLINK_ESWITCH_ENCAP_MODE_NONE;
dev->priv.eswitch = esw;
return 0;

3
drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
View File

@ -210,6 +210,7 @@ struct mlx5_esw_offload {
DECLARE_HASHTABLE(encap_tbl, 8);
u8 inline_mode;
u64 num_flows;
u8 encap;
};
struct mlx5_eswitch {
@ -322,6 +323,8 @@ int mlx5_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode);
int mlx5_devlink_eswitch_inline_mode_set(struct devlink *devlink, u8 mode);
int mlx5_devlink_eswitch_inline_mode_get(struct devlink *devlink, u8 *mode);
int mlx5_eswitch_inline_mode_get(struct mlx5_eswitch *esw, int nvfs, u8 *mode);
int mlx5_devlink_eswitch_encap_mode_set(struct devlink *devlink, u8 encap);
int mlx5_devlink_eswitch_encap_mode_get(struct devlink *devlink, u8 *encap);
void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw,
int vport_index,
struct mlx5_eswitch_rep *rep);

63
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
View File

@ -450,8 +450,7 @@ static int esw_create_offloads_fast_fdb_table(struct mlx5_eswitch *esw)
esw_size = min_t(int, MLX5_CAP_GEN(dev, max_flow_counter) * ESW_OFFLOADS_NUM_GROUPS,
1 << MLX5_CAP_ESW_FLOWTABLE_FDB(dev, log_max_ft_size));
if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, encap) &&
MLX5_CAP_ESW_FLOWTABLE_FDB(dev, decap))
if (esw->offloads.encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE)
flags |= MLX5_FLOW_TABLE_TUNNEL_EN;
fdb = mlx5_create_auto_grouped_flow_table(root_ns, FDB_FAST_PATH,
@ -1045,6 +1044,66 @@ int mlx5_eswitch_inline_mode_get(struct mlx5_eswitch *esw, int nvfs, u8 *mode)
return 0;
}
int mlx5_devlink_eswitch_encap_mode_set(struct devlink *devlink, u8 encap)
{
struct mlx5_core_dev *dev = devlink_priv(devlink);
struct mlx5_eswitch *esw = dev->priv.eswitch;
int err;
if (!MLX5_CAP_GEN(dev, vport_group_manager))
return -EOPNOTSUPP;
if (esw->mode == SRIOV_NONE)
return -EOPNOTSUPP;
if (encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE &&
(!MLX5_CAP_ESW_FLOWTABLE_FDB(dev, encap) ||
!MLX5_CAP_ESW_FLOWTABLE_FDB(dev, decap)))
return -EOPNOTSUPP;
if (encap && encap != DEVLINK_ESWITCH_ENCAP_MODE_BASIC)
return -EOPNOTSUPP;
if (esw->mode == SRIOV_LEGACY) {
esw->offloads.encap = encap;
return 0;
}
if (esw->offloads.encap == encap)
return 0;
if (esw->offloads.num_flows > 0) {
esw_warn(dev, "Can't set encapsulation when flows are configured\n");
return -EOPNOTSUPP;
}
esw_destroy_offloads_fast_fdb_table(esw);
esw->offloads.encap = encap;
err = esw_create_offloads_fast_fdb_table(esw);
if (err) {
esw_warn(esw->dev, "Failed re-creating fast FDB table, err %d\n", err);
esw->offloads.encap = !encap;
(void) esw_create_offloads_fast_fdb_table(esw);
}
return err;
}
int mlx5_devlink_eswitch_encap_mode_get(struct devlink *devlink, u8 *encap)
{
struct mlx5_core_dev *dev = devlink_priv(devlink);
struct mlx5_eswitch *esw = dev->priv.eswitch;
if (!MLX5_CAP_GEN(dev, vport_group_manager))
return -EOPNOTSUPP;
if (esw->mode == SRIOV_NONE)
return -EOPNOTSUPP;
*encap = esw->offloads.encap;
return 0;
}
void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw,
int vport_index,
struct mlx5_eswitch_rep *__rep)

2
drivers/net/ethernet/mellanox/mlx5/core/main.c
View File

@ -1280,6 +1280,8 @@ static const struct devlink_ops mlx5_devlink_ops = {
.eswitch_mode_get = mlx5_devlink_eswitch_mode_get,
.eswitch_inline_mode_set = mlx5_devlink_eswitch_inline_mode_set,
.eswitch_inline_mode_get = mlx5_devlink_eswitch_inline_mode_get,
.eswitch_encap_mode_set = mlx5_devlink_eswitch_encap_mode_set,
.eswitch_encap_mode_get = mlx5_devlink_eswitch_encap_mode_get,
#endif
};