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net/mlx5: E-switch, Create a second level FDB flow table 

If firmware supports the forward action with a destination list
that includes a flow table, create a second level FDB flow table.

This is going to be used for flow based mirroring under the switchdev
offloads mode.

Signed-off-by: Chris Mi <chrism@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Chris Mi 2018-05-16 17:42:52 +09:00 committed by Saeed Mahameed
parent b45630021b
commit a842dd04cf
3 changed files with 32 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
View File

@ -55,6 +55,9 @@
#define MLX5_RATE_TO_BW_SHARE(rate, divider, limit) \
min_t(u32, max_t(u32, (rate) / (divider), MLX5_MIN_BW_SHARE), limit)
#define mlx5_esw_has_fwd_fdb(dev) \
MLX5_CAP_ESW_FLOWTABLE(dev, fdb_multi_path_to_table)
struct vport_ingress {
struct mlx5_flow_table *acl;
struct mlx5_flow_group *allow_untagged_spoofchk_grp;
@ -127,6 +130,7 @@ struct mlx5_eswitch_fdb {
struct offloads_fdb {
struct mlx5_flow_table *fast_fdb;
struct mlx5_flow_table *fwd_fdb;
struct mlx5_flow_table *slow_fdb;
struct mlx5_flow_group *send_to_vport_grp;
struct mlx5_flow_group *miss_grp;

31
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
View File

@ -454,7 +454,7 @@ static int esw_create_offloads_fast_fdb_table(struct mlx5_eswitch *esw)
if (!root_ns) {
esw_warn(dev, "Failed to get FDB flow namespace\n");
err = -EOPNOTSUPP;
goto out;
goto out_namespace;
}
esw_debug(dev, "Create offloads FDB table, min (max esw size(2^%d), max counters(%d)*groups(%d))\n",
@ -464,6 +464,9 @@ static int esw_create_offloads_fast_fdb_table(struct mlx5_eswitch *esw)
esw_size = min_t(int, max_flow_counter * ESW_OFFLOADS_NUM_GROUPS,
1 << MLX5_CAP_ESW_FLOWTABLE_FDB(dev, log_max_ft_size));
if (mlx5_esw_has_fwd_fdb(dev))
esw_size >>= 1;
if (esw->offloads.encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE)
flags |= MLX5_FLOW_TABLE_TUNNEL_EN;
@ -474,16 +477,36 @@ static int esw_create_offloads_fast_fdb_table(struct mlx5_eswitch *esw)
if (IS_ERR(fdb)) {
err = PTR_ERR(fdb);
esw_warn(dev, "Failed to create Fast path FDB Table err %d\n", err);
goto out;
goto out_namespace;
}
esw->fdb_table.offloads.fast_fdb = fdb;
out:
if (!mlx5_esw_has_fwd_fdb(dev))
goto out_namespace;
fdb = mlx5_create_auto_grouped_flow_table(root_ns, FDB_FAST_PATH,
esw_size,
ESW_OFFLOADS_NUM_GROUPS, 1,
flags);
if (IS_ERR(fdb)) {
err = PTR_ERR(fdb);
esw_warn(dev, "Failed to create fwd table err %d\n", err);
goto out_ft;
}
esw->fdb_table.offloads.fwd_fdb = fdb;
return err;
out_ft:
mlx5_destroy_flow_table(esw->fdb_table.offloads.fast_fdb);
out_namespace:
return err;
}
static void esw_destroy_offloads_fast_fdb_table(struct mlx5_eswitch *esw)
{
if (mlx5_esw_has_fwd_fdb(esw->dev))
mlx5_destroy_flow_table(esw->fdb_table.offloads.fwd_fdb);
mlx5_destroy_flow_table(esw->fdb_table.offloads.fast_fdb);
}
@ -588,7 +611,7 @@ static int esw_create_offloads_fdb_tables(struct mlx5_eswitch *esw, int nvports)
send_vport_err:
mlx5_destroy_flow_table(esw->fdb_table.offloads.slow_fdb);
slow_fdb_err:
mlx5_destroy_flow_table(esw->fdb_table.offloads.fast_fdb);
esw_destroy_offloads_fast_fdb_table(esw);
fast_fdb_err:
ns_err:
kvfree(flow_group_in);

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

@ -2495,7 +2495,7 @@ static int init_fdb_root_ns(struct mlx5_flow_steering *steering)
if (!steering->fdb_root_ns)
return -ENOMEM;
prio = fs_create_prio(&steering->fdb_root_ns->ns, 0, 1);
prio = fs_create_prio(&steering->fdb_root_ns->ns, 0, 2);
if (IS_ERR(prio))
goto out_err;