diff mbox series

[net-next,V2,04/11] net/mlx5e: E-Switch, Offload all chain 0 priorities when modify header and forward action is not supported

Message ID 20210112070534.136841-5-saeed@kernel.org (mailing list archive)
State Accepted
Delegated to: Netdev Maintainers
Headers show
Series [net-next,V2,01/11] net/mlx5: Add HW definition of reg_c_preserve | expand

Checks

Context Check Description
netdev/cover_letter success Pull request
netdev/fixes_present success Link
netdev/patch_count success Link
netdev/tree_selection success Clearly marked for net-next
netdev/subject_prefix success Link
netdev/cc_maintainers warning 4 maintainers not CCed: linux-rdma@vger.kernel.org paulb@mellanox.com lariel@mellanox.com leon@kernel.org
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 21 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success Link
netdev/stable success Stable not CCed

Commit Message

Saeed Mahameed Jan. 12, 2021, 7:05 a.m. UTC 
From: Jianbo Liu <jianbol@mellanox.com>

Miss path handling of tc multi chain filters (i.e. filters that are
defined on chain > 0) requires the hardware to communicate to the
driver the last chain that was processed. This is possible only when
the hardware is capable of performing the combination of modify header
and forward to table actions. Currently, if the hardware is missing
this capability then the driver only offloads rules that are defined
on tc chain 0 prio 1. However, this restriction can be relaxed because
packets that miss from chain 0 are processed through all the
priorities by tc software.

Allow the offload of all the supported priorities for chain 0 even
when the hardware is not capable to perform modify header and goto
table actions.

Fixes: 0b3a8b6b5340 ("net/mlx5: E-Switch: Fix using fwd and modify when firmware doesn't support it")
Signed-off-by: Jianbo Liu <jianbol@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c         | 6 ------
 drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c | 3 ---
 2 files changed, 9 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 4cdf834fa74a..56aa39ac1a1c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -1317,12 +1317,6 @@  mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
 	int err = 0;
 	int out_index;
 
-	if (!mlx5_chains_prios_supported(esw_chains(esw)) && attr->prio != 1) {
-		NL_SET_ERR_MSG_MOD(extack,
-				   "E-switch priorities unsupported, upgrade FW");
-		return -EOPNOTSUPP;
-	}
-
 	/* We check chain range only for tc flows.
 	 * For ft flows, we checked attr->chain was originally 0 and set it to
 	 * FDB_FT_CHAIN which is outside tc range.
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c
index 947f346bdc2d..fa61d305990c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c
@@ -141,9 +141,6 @@  u32 mlx5_chains_get_nf_ft_chain(struct mlx5_fs_chains *chains)
 
 u32 mlx5_chains_get_prio_range(struct mlx5_fs_chains *chains)
 {
-	if (!mlx5_chains_prios_supported(chains))
-		return 1;
-
 	if (mlx5_chains_ignore_flow_level_supported(chains))
 		return UINT_MAX;