diff mbox series

[net-next,v4,7/9] net/mlx5e: TC, store tc action cookies per attr

Message ID 20230212132520.12571-8-ozsh@nvidia.com (mailing list archive)
State Accepted
Commit cca7eac13856e75306bbdefb1673bcd0310d9abc
Delegated to: Netdev Maintainers
Headers show
Series add support for per action hw stats | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 5 maintainers not CCed: leon@kernel.org pabeni@redhat.com linux-rdma@vger.kernel.org edumazet@google.com davem@davemloft.net
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning WARNING: line length of 93 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Oz Shlomo Feb. 12, 2023, 1:25 p.m. UTC 
The tc parse action phase translates the tc actions to mlx5 flow
attributes data structure that is used during the flow offload phase.
Currently, the flow offload stage instantiates hw counters while
associating them to flow cookie. However, flows with branching
actions are required to associate a hardware counter with its action
cookies.

Store the parsed tc action cookies on the flow attribute.
Use the list of cookies in the next patch to associate a tc action cookie
with its allocated hw counter.

Signed-off-by: Oz Shlomo <ozsh@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>

---
Change log:
    V1 -> V2:
    - Reduce tc_act_cookies_count size from int to u16
    - Rearange mlx5_flow_attr attributes for better cache alignment
---
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 3 +++
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.h | 2 ++
 2 files changed, 5 insertions(+)
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 a3b46feeff8a..08123fb207ed 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -3786,6 +3786,7 @@  bool mlx5e_same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
 	parse_attr->filter_dev = attr->parse_attr->filter_dev;
 	attr2->action = 0;
 	attr2->counter = NULL;
+	attr->tc_act_cookies_count = 0;
 	attr2->flags = 0;
 	attr2->parse_attr = parse_attr;
 	attr2->dest_chain = 0;
@@ -4149,6 +4150,8 @@  struct mlx5_flow_attr *
 			goto out_free;
 
 		parse_state->actions |= attr->action;
+		if (!tc_act->stats_action)
+			attr->tc_act_cookies[attr->tc_act_cookies_count++] = act->act_cookie;
 
 		/* Split attr for multi table act if not the last act. */
 		if (jump_state.jump_target ||
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
index ce516dc7f3fd..75b34e632916 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
@@ -69,6 +69,7 @@  struct mlx5_nic_flow_attr {
 
 struct mlx5_flow_attr {
 	u32 action;
+	unsigned long tc_act_cookies[TCA_ACT_MAX_PRIO];
 	struct mlx5_fc *counter;
 	struct mlx5_modify_hdr *modify_hdr;
 	struct mlx5e_mod_hdr_handle *mh; /* attached mod header instance */
@@ -79,6 +80,7 @@  struct mlx5_flow_attr {
 	struct mlx5e_tc_flow_parse_attr *parse_attr;
 	u32 chain;
 	u16 prio;
+	u16 tc_act_cookies_count;
 	u32 dest_chain;
 	struct mlx5_flow_table *ft;
 	struct mlx5_flow_table *dest_ft;