From ec3be8873df3bf467ead27f7cedc896cbb2bd819 Mon Sep 17 00:00:00 2001 From: Vlad Buslov Date: Thu, 4 Mar 2021 13:09:53 +0200 Subject: net/mlx5: Create TC-miss priority and table In order to adhere to kernel software datapath model bridge offloads must come after TC and NF FDBs. Following patches in this series add new FDB priority for bridge after FDB_FT_OFFLOAD. However, since netfilter offload is implemented with unmanaged tables, its miss path is not automatically connected to next priority and requires the code to manually connect with slow table. To keep bridge offloads encapsulated and not mix it with eswitch offloads, create a new FDB_TC_MISS priority between FDB_FT_OFFLOAD and FDB_SLOW_PATH: + | +---------v----------+ | | | FDB_TC_OFFLOAD | | | +---------+----------+ | | | +---------v----------+ | | | FDB_FT_OFFLOAD | | | +---------+----------+ | | | +---------v----------+ | | | FDB_TC_MISS | | | +---------+----------+ | | | +---------v----------+ | | | FDB_SLOW_PATH | | | +---------+----------+ | v Initialize the new priority with single default empty managed table and use the table as TC/NF miss patch instead of slow table. This approach allows bridge offloads to be created as new FDB namespace priority between FDB_TC_MISS and FDB_SLOW_PATH without exposing its internal tables to any other modules since miss path of managed TC-miss table is automatically wired to next priority. Signed-off-by: Vlad Buslov Reviewed-by: Jianbo Liu Signed-off-by: Saeed Mahameed --- include/linux/mlx5/fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mlx5/fs.h b/include/linux/mlx5/fs.h index f69f68fba946..271f2f4d6b60 100644 --- a/include/linux/mlx5/fs.h +++ b/include/linux/mlx5/fs.h @@ -87,6 +87,7 @@ enum { FDB_BYPASS_PATH, FDB_TC_OFFLOAD, FDB_FT_OFFLOAD, + FDB_TC_MISS, FDB_SLOW_PATH, FDB_PER_VPORT, }; -- cgit v1.2.3