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net/sched: cls_api: add helper for tc cls walker stats dump

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The walk implementation of most tc cls modules is basically the same.
That is, the values of count and skip are checked first. If count is
greater than or equal to skip, the registered fn function is executed.
Otherwise, increase the value of count. So we can reconstruct them.

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Tested-by: Victor Nogueira <victor@mojatatu.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Zhengchao Shao 2022-09-16 10:02:43 +08:00 committed by Jakub Kicinski
parent e93a766da5
commit fe0df81df5
1 changed files with 13 additions and 0 deletions
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13
include/net/pkt_cls.h
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@ -81,6 +81,19 @@ int tcf_classify(struct sk_buff *skb,
const struct tcf_proto *tp, struct tcf_result *res,
bool compat_mode);
static inline bool tc_cls_stats_dump(struct tcf_proto *tp,
struct tcf_walker *arg,
void *filter)
{
if (arg->count >= arg->skip && arg->fn(tp, filter, arg) < 0) {
arg->stop = 1;
return false;
}
arg->count++;
return true;
}
#else
static inline bool tcf_block_shared(struct tcf_block *block)
{