iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net/mlx5: Accumulate levels for chains prio namespaces

Browse Source 
Tc chains are implemented by creating a chained prio steering type, and
inside it there is a namespace for each chain (FDB_TC_MAX_CHAINS). Each
of those has a list of priorities.

Currently, all namespaces in a prio start at the parent prio level.
But since we can jump from chain (namespace) to another chain in the
same prio, we need the levels for higher chains to be higher as well.
So we created unused prios to account for levels in previous namespaces.

Fix that by accumulating the namespaces levels if we are inside a chained
type prio, and removing the unused prios.

Fixes: 328edb499f99 ('net/mlx5: Split FDB fast path prio to multiple namespaces')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Paul Blakey 2019-11-12 00:34:27 +01:00 committed by Saeed Mahameed
parent 4db7b98e94
commit 34b13cb3ea
2 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -953,7 +953,7 @@ esw_get_prio_table(struct mlx5_eswitch *esw, u32 chain, u16 prio, int level)
flags |= (MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT |
MLX5_FLOW_TABLE_TUNNEL_EN_DECAP);
table_prio = (chain * FDB_TC_MAX_PRIO) + prio - 1;
table_prio = prio - 1;
/* create earlier levels for correct fs_core lookup when
* connecting tables

10
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
View File

@ -2359,9 +2359,17 @@ static void set_prio_attrs_in_prio(struct fs_prio *prio, int acc_level)
int acc_level_ns = acc_level;
prio->start_level = acc_level;
fs_for_each_ns(ns, prio)
fs_for_each_ns(ns, prio) {
/* This updates start_level and num_levels of ns's priority descendants */
acc_level_ns = set_prio_attrs_in_ns(ns, acc_level);
/* If this a prio with chains, and we can jump from one chain
* (namepsace) to another, so we accumulate the levels
*/
if (prio->node.type == FS_TYPE_PRIO_CHAINS)
acc_level = acc_level_ns;
}
if (!prio->num_levels)
prio->num_levels = acc_level_ns - prio->start_level;
WARN_ON(prio->num_levels < acc_level_ns - prio->start_level);