net/sched: Fix update of lastuse in act modules implementing stats_update

[ Upstream commit 3bb23421a504f01551b7cb9dff0e41dbf16656b0 ]

We need to update lastuse to to the most updated value between what
is already set and the new value.
If HW matching fails, i.e. because of an issue, the stats are not updated
but it could be that software did match and updated lastuse.

Fixes: 5712bf9c5c30 ("net/sched: act_mirred: Use passed lastuse argument")
Fixes: 9fea47d93bcc ("net/sched: act_gact: Update statistics when offloaded to hardware")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index e0aa30f..9617b42 100644 (file)
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -161,7 +161,7 @@ static void tcf_gact_stats_update(struct tc_action *a, u64 bytes, u32 packets,
        if (action == TC_ACT_SHOT)
                this_cpu_ptr(gact->common.cpu_qstats)->drops += packets;
 
-       tm->lastuse = lastuse;
+       tm->lastuse = max_t(u64, tm->lastuse, lastuse);
 }
 
 static int tcf_gact_dump(struct sk_buff *skb, struct tc_action *a,

diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 6b07fba..fc3650b 100644 (file)
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -211,7 +211,7 @@ static void tcf_stats_update(struct tc_action *a, u64 bytes, u32 packets,
        struct tcf_t *tm = &m->tcf_tm;
 
        _bstats_cpu_update(this_cpu_ptr(a->cpu_bstats), bytes, packets);
-       tm->lastuse = lastuse;
+       tm->lastuse = max_t(u64, tm->lastuse, lastuse);
 }
 
 static int tcf_mirred_dump(struct sk_buff *skb, struct tc_action *a, int bind,