diff mbox series

[net-next,v3,1/9] net/sched: optimize action stats api calls

Message ID 20230206135442.15671-2-ozsh@nvidia.com (mailing list archive)
State Superseded
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: 2 this patch: 2
netdev/cc_maintainers warning 5 maintainers not CCed: pabeni@redhat.com kuba@kernel.org edumazet@google.com xiyou.wangcong@gmail.com davem@davemloft.net
netdev/build_clang success Errors and warnings before: 1 this patch: 1
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: 2 this patch: 2
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 17 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Oz Shlomo Feb. 6, 2023, 1:54 p.m. UTC 
Currently the hw action stats update is called from tcf_exts_hw_stats_update,
when a tc filter is dumped, and from tcf_action_copy_stats, when a hw
action is dumped.
However, the tcf_action_copy_stats is also called from tcf_action_dump.
As such, the hw action stats update cb is called 3 times for every
tc flower filter dump.

Move the tc action hw stats update from tcf_action_copy_stats to
tcf_dump_walker to update the hw action stats when tc action is dumped.

Signed-off-by: Oz Shlomo <ozsh@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
---
 net/sched/act_api.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Comments

Marcelo Ricardo Leitner Feb. 10, 2023, 2:31 a.m. UTC | #1 
On Mon, Feb 06, 2023 at 03:54:34PM +0200, Oz Shlomo wrote:
> Currently the hw action stats update is called from tcf_exts_hw_stats_update,
> when a tc filter is dumped, and from tcf_action_copy_stats, when a hw
> action is dumped.
> However, the tcf_action_copy_stats is also called from tcf_action_dump.
> As such, the hw action stats update cb is called 3 times for every
> tc flower filter dump.
> 
> Move the tc action hw stats update from tcf_action_copy_stats to
> tcf_dump_walker to update the hw action stats when tc action is dumped.
> 
> Signed-off-by: Oz Shlomo <ozsh@nvidia.com>
> Reviewed-by: Simon Horman <simon.horman@corigine.com>

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
diff mbox series

Patch

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index cd09ef49df22..f4fa6d7340f8 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -539,6 +539,8 @@  static int tcf_dump_walker(struct tcf_idrinfo *idrinfo, struct sk_buff *skb,
 			       (unsigned long)p->tcfa_tm.lastuse))
 			continue;
 
+		tcf_action_update_hw_stats(p);
+
 		nest = nla_nest_start_noflag(skb, n_i);
 		if (!nest) {
 			index--;
@@ -1539,9 +1541,6 @@  int tcf_action_copy_stats(struct sk_buff *skb, struct tc_action *p,
 	if (p == NULL)
 		goto errout;
 
-	/* update hw stats for this action */
-	tcf_action_update_hw_stats(p);
-
 	/* compat_mode being true specifies a call that is supposed
 	 * to add additional backward compatibility statistic TLVs.
 	 */