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Date: Sun, 17 May 2020 08:46:31 -0400 From: Roman Mashak <mrv@...atatu.com> To: davem@...emloft.net Cc: netdev@...r.kernel.org, kernel@...atatu.com, jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us, Roman Mashak <mrv@...atatu.com> Subject: [PATCH net 1/1] net sched: fix reporting the first-time use timestamp When a new action is installed, firstuse field of 'tcf_t' is explicitly set to 0. Value of zero means "new action, not yet used"; as a packet hits the action, 'firstuse' is stamped with the current jiffies value. tcf_tm_dump() should return 0 for firstuse if action has not yet been hit. Fixes: 48d8ee1694dd ("net sched actions: aggregate dumping of actions timeinfo") Cc: Jamal Hadi Salim <jhs@...atatu.com> Signed-off-by: Roman Mashak <mrv@...atatu.com> Acked-by: Jamal Hadi Salim <jhs@...atatu.com> --- include/net/act_api.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/net/act_api.h b/include/net/act_api.h index c24d7643548e..124bd139886c 100644 --- a/include/net/act_api.h +++ b/include/net/act_api.h @@ -75,7 +75,8 @@ static inline void tcf_tm_dump(struct tcf_t *dtm, const struct tcf_t *stm) { dtm->install = jiffies_to_clock_t(jiffies - stm->install); dtm->lastuse = jiffies_to_clock_t(jiffies - stm->lastuse); - dtm->firstuse = jiffies_to_clock_t(jiffies - stm->firstuse); + dtm->firstuse = stm->firstuse ? + jiffies_to_clock_t(jiffies - stm->firstuse) : 0; dtm->expires = jiffies_to_clock_t(stm->expires); } -- 2.7.4
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