Subject: Re: [net-next RFC 1/1] net sched actions: introduce timestamp for first time used

From: Jamal Hadi Salim <[email-masked]>
Date: Thu, 19 May 2016 08:15:44 -0400

On 16-05-19 07:54 AM, Jamal Hadi Salim wrote:
> On 16-05-18 01:17 PM, Cong Wang wrote:

>> I think it is the time to add a wrapper for these tm.XX =
>> jiffies_to_clock_t(XXX).
>>
>
> Agreed. Will send a patch.
> Actually I will resend the firstuse as well without RFC tag
> and the wrapper one as separate patch.
>

Something like attached - compiles but untested.
I will test later and do formal submission.

cheers,
jamal
> cheers,
> jamal

diff --git a/include/net/act_api.h b/include/net/act_api.h
index e15e236..12b2d8f 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -80,6 +80,14 @@ static inline void tcf_lastuse_update(struct tcf_t *tm)
 		tm->firstuse = now;
 }
 
+static inline void tcf_tm_dump(struct tcf_t *stm, struct tcf_t *dtm)
+{
+	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->expires = jiffies_to_clock_t(stm->expires);
+}
+
 struct tc_action {
 	void			*priv;
 	const struct tc_action_ops	*ops;
diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c
index f581e01..01f9706 100644
--- a/net/sched/act_bpf.c
+++ b/net/sched/act_bpf.c
@@ -154,11 +154,7 @@ static int tcf_bpf_dump(struct sk_buff *skb, struct tc_action *act,
 	if (ret)
 		goto nla_put_failure;
 
-	tm.install = jiffies_to_clock_t(jiffies - prog->tcf_tm.install);
-	tm.lastuse = jiffies_to_clock_t(jiffies - prog->tcf_tm.lastuse);
-	tm.firstuse = jiffies_to_clock_t(jiffies - prog->tcf_tm.firstuse);
-	tm.expires = jiffies_to_clock_t(prog->tcf_tm.expires);
-
+	tcf_tm_dump(&prog->tcf_tm, &tm);
 	if (nla_put_64bit(skb, TCA_ACT_BPF_TM, sizeof(tm), &tm,
 			  TCA_ACT_BPF_PAD))
 		goto nla_put_failure;
diff --git a/net/sched/act_connmark.c b/net/sched/act_connmark.c
index e3f64f2..5145026 100644
--- a/net/sched/act_connmark.c
+++ b/net/sched/act_connmark.c
@@ -160,10 +160,7 @@ static inline int tcf_connmark_dump(struct sk_buff *skb, struct tc_action *a,
 	if (nla_put(skb, TCA_CONNMARK_PARMS, sizeof(opt), &opt))
 		goto nla_put_failure;
 
-	t.install = jiffies_to_clock_t(jiffies - ci->tcf_tm.install);
-	t.lastuse = jiffies_to_clock_t(jiffies - ci->tcf_tm.lastuse);
-	t.expires = jiffies_to_clock_t(ci->tcf_tm.expires);
-	t.firstuse = jiffies_to_clock_t(jiffies - ci->tcf_tm.firstuse);
+	tcf_tm_dump(&ci->tcf_tm, &t);
 	if (nla_put_64bit(skb, TCA_CONNMARK_TM, sizeof(t), &t,
 			  TCA_CONNMARK_PAD))
 		goto nla_put_failure;
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index 7725eafb..ef21d0b 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -546,10 +546,8 @@ static int tcf_csum_dump(struct sk_buff *skb,
 
 	if (nla_put(skb, TCA_CSUM_PARMS, sizeof(opt), &opt))
 		goto nla_put_failure;
-	t.install = jiffies_to_clock_t(jiffies - p->tcf_tm.install);
-	t.lastuse = jiffies_to_clock_t(jiffies - p->tcf_tm.lastuse);
-	t.firstuse = jiffies_to_clock_t(jiffies - p->tcf_tm.firstuse);
-	t.expires = jiffies_to_clock_t(p->tcf_tm.expires);
+
+	tcf_tm_dump(&p->tcf_tm, &t);
 	if (nla_put_64bit(skb, TCA_CSUM_TM, sizeof(t), &t, TCA_CSUM_PAD))
 		goto nla_put_failure;
 
diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index 1f3baec..47283f7 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -175,10 +175,7 @@ static int tcf_gact_dump(struct sk_buff *skb, struct tc_action *a,
 			goto nla_put_failure;
 	}
 #endif
-	t.install = jiffies_to_clock_t(jiffies - gact->tcf_tm.install);
-	t.lastuse = jiffies_to_clock_t(jiffies - gact->tcf_tm.lastuse);
-	t.firstuse = jiffies_to_clock_t(jiffies - gact->tcf_tm.firstuse);
-	t.expires = jiffies_to_clock_t(gact->tcf_tm.expires);
+	tcf_tm_dump(&gact->tcf_tm, &t);
 	if (nla_put_64bit(skb, TCA_GACT_TM, sizeof(t), &t, TCA_GACT_PAD))
 		goto nla_put_failure;
 	return skb->len;
diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c
index 5daeab6..4bc3386 100644
--- a/net/sched/act_ife.c
+++ b/net/sched/act_ife.c
@@ -553,9 +553,7 @@ static int tcf_ife_dump(struct sk_buff *skb, struct tc_action *a, int bind,
 	if (nla_put(skb, TCA_IFE_PARMS, sizeof(opt), &opt))
 		goto nla_put_failure;
 
-	t.install = jiffies_to_clock_t(jiffies - ife->tcf_tm.install);
-	t.lastuse = jiffies_to_clock_t(jiffies - ife->tcf_tm.lastuse);
-	t.expires = jiffies_to_clock_t(ife->tcf_tm.expires);
+	tcf_tm_dump(&ife->tcf_tm, &t);
 	if (nla_put_64bit(skb, TCA_IFE_TM, sizeof(t), &t, TCA_IFE_PAD))
 		goto nla_put_failure;
 
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index 43bf8ff..6c9bece 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -279,12 +279,11 @@ static int tcf_ipt_dump(struct sk_buff *skb, struct tc_action *a, int bind,
 	    nla_put(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c) ||
 	    nla_put_string(skb, TCA_IPT_TABLE, ipt->tcfi_tname))
 		goto nla_put_failure;
-	tm.install = jiffies_to_clock_t(jiffies - ipt->tcf_tm.install);
-	tm.lastuse = jiffies_to_clock_t(jiffies - ipt->tcf_tm.lastuse);
-	tm.firstuse = jiffies_to_clock_t(jiffies - ipt->tcf_tm.firstuse);
-	tm.expires = jiffies_to_clock_t(ipt->tcf_tm.expires);
+
+	tcf_tm_dump(&ipt->tcf_tm, &tm);
 	if (nla_put_64bit(skb, TCA_IPT_TM, sizeof(tm), &tm, TCA_IPT_PAD))
 		goto nla_put_failure;
+
 	kfree(t);
 	return skb->len;
 
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 5b1423f..435df65 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -218,10 +218,8 @@ static int tcf_mirred_dump(struct sk_buff *skb, struct tc_action *a, int bind,
 
 	if (nla_put(skb, TCA_MIRRED_PARMS, sizeof(opt), &opt))
 		goto nla_put_failure;
-	t.install = jiffies_to_clock_t(jiffies - m->tcf_tm.install);
-	t.lastuse = jiffies_to_clock_t(jiffies - m->tcf_tm.lastuse);
-	t.firstuse = jiffies_to_clock_t(jiffies - m->tcf_tm.firstuse);
-	t.expires = jiffies_to_clock_t(m->tcf_tm.expires);
+
+	tcf_tm_dump(&m->tcf_tm, &t);
 	if (nla_put_64bit(skb, TCA_MIRRED_TM, sizeof(t), &t, TCA_MIRRED_PAD))
 		goto nla_put_failure;
 	return skb->len;
diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
index 9fbf780..ca91f57 100644
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -264,10 +264,8 @@ static int tcf_nat_dump(struct sk_buff *skb, struct tc_action *a,
 
 	if (nla_put(skb, TCA_NAT_PARMS, sizeof(opt), &opt))
 		goto nla_put_failure;
-	t.install = jiffies_to_clock_t(jiffies - p->tcf_tm.install);
-	t.lastuse = jiffies_to_clock_t(jiffies - p->tcf_tm.lastuse);
-	t.firstuse = jiffies_to_clock_t(jiffies - p->tcf_tm.firstuse);
-	t.expires = jiffies_to_clock_t(p->tcf_tm.expires);
+
+	tcf_tm_dump(&p->tcf_tm, &t);
 	if (nla_put_64bit(skb, TCA_NAT_TM, sizeof(t), &t, TCA_NAT_PAD))
 		goto nla_put_failure;
 
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index fb89275..0f53814 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -200,12 +200,11 @@ static int tcf_pedit_dump(struct sk_buff *skb, struct tc_action *a,
 
 	if (nla_put(skb, TCA_PEDIT_PARMS, s, opt))
 		goto nla_put_failure;
-	t.install = jiffies_to_clock_t(jiffies - p->tcf_tm.install);
-	t.lastuse = jiffies_to_clock_t(jiffies - p->tcf_tm.lastuse);
-	t.firstuse = jiffies_to_clock_t(jiffies - p->tcf_tm.firstuse);
-	t.expires = jiffies_to_clock_t(p->tcf_tm.expires);
+
+	tcf_tm_dump(&p->tcf_tm, &t);
 	if (nla_put_64bit(skb, TCA_PEDIT_TM, sizeof(t), &t, TCA_PEDIT_PAD))
 		goto nla_put_failure;
+
 	kfree(opt);
 	return skb->len;
 
diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
index 9d9892c..930647f 100644
--- a/net/sched/act_simple.c
+++ b/net/sched/act_simple.c
@@ -158,10 +158,8 @@ static int tcf_simp_dump(struct sk_buff *skb, struct tc_action *a,
 	if (nla_put(skb, TCA_DEF_PARMS, sizeof(opt), &opt) ||
 	    nla_put_string(skb, TCA_DEF_DATA, d->tcfd_defdata))
 		goto nla_put_failure;
-	t.install = jiffies_to_clock_t(jiffies - d->tcf_tm.install);
-	t.lastuse = jiffies_to_clock_t(jiffies - d->tcf_tm.lastuse);
-	t.firstuse = jiffies_to_clock_t(jiffies - d->tcf_tm.firstuse);
-	t.expires = jiffies_to_clock_t(d->tcf_tm.expires);
+
+	tcf_tm_dump(&d->tcf_tm, &t);
 	if (nla_put_64bit(skb, TCA_DEF_TM, sizeof(t), &t, TCA_DEF_PAD))
 		goto nla_put_failure;
 	return skb->len;
diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c
index 7d3216c..3a1ee45 100644
--- a/net/sched/act_skbedit.c
+++ b/net/sched/act_skbedit.c
@@ -172,10 +172,8 @@ static int tcf_skbedit_dump(struct sk_buff *skb, struct tc_action *a,
 	    nla_put(skb, TCA_SKBEDIT_MARK, sizeof(d->mark),
 		    &d->mark))
 		goto nla_put_failure;
-	t.install = jiffies_to_clock_t(jiffies - d->tcf_tm.install);
-	t.lastuse = jiffies_to_clock_t(jiffies - d->tcf_tm.lastuse);
-	t.firstuse = jiffies_to_clock_t(jiffies - d->tcf_tm.firstuse);
-	t.expires = jiffies_to_clock_t(d->tcf_tm.expires);
+
+	tcf_tm_dump(&d->tcf_tm, &t);
 	if (nla_put_64bit(skb, TCA_SKBEDIT_TM, sizeof(t), &t, TCA_SKBEDIT_PAD))
 		goto nla_put_failure;
 	return skb->len;
diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c
index 4b1c2c0..d596a8b 100644
--- a/net/sched/act_vlan.c
+++ b/net/sched/act_vlan.c
@@ -183,10 +183,7 @@ static int tcf_vlan_dump(struct sk_buff *skb, struct tc_action *a,
 			  v->tcfv_push_proto)))
 		goto nla_put_failure;
 
-	t.install = jiffies_to_clock_t(jiffies - v->tcf_tm.install);
-	t.lastuse = jiffies_to_clock_t(jiffies - v->tcf_tm.lastuse);
-	t.firstuse = jiffies_to_clock_t(jiffies - v->tcf_tm.firstuse);
-	t.expires = jiffies_to_clock_t(v->tcf_tm.expires);
+	tcf_tm_dump(&v->tcf_tm, &t);
 	if (nla_put_64bit(skb, TCA_VLAN_TM, sizeof(t), &t, TCA_VLAN_PAD))
 		goto nla_put_failure;
 	return skb->len;