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Diffstat (limited to 'net')
-rw-r--r--net/sched/sch_red.c58
1 files changed, 56 insertions, 2 deletions
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index 225ce370e5a8..de2be4d04ed6 100644
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -46,6 +46,8 @@ struct red_sched_data {
struct red_vars vars;
struct red_stats stats;
struct Qdisc *qdisc;
+ struct tcf_qevent qe_early_drop;
+ struct tcf_qevent qe_mark;
};
#define TC_RED_SUPPORTED_FLAGS (TC_RED_HISTORIC_FLAGS | TC_RED_NODROP)
@@ -92,6 +94,9 @@ static int red_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_
if (INET_ECN_set_ce(skb)) {
q->stats.prob_mark++;
+ skb = tcf_qevent_handle(&q->qe_mark, sch, skb, root_lock, to_free, &ret);
+ if (!skb)
+ return NET_XMIT_CN | ret;
} else if (!red_use_nodrop(q)) {
q->stats.prob_drop++;
goto congestion_drop;
@@ -109,6 +114,9 @@ static int red_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_
if (INET_ECN_set_ce(skb)) {
q->stats.forced_mark++;
+ skb = tcf_qevent_handle(&q->qe_mark, sch, skb, root_lock, to_free, &ret);
+ if (!skb)
+ return NET_XMIT_CN | ret;
} else if (!red_use_nodrop(q)) {
q->stats.forced_drop++;
goto congestion_drop;
@@ -129,6 +137,10 @@ static int red_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_
return ret;
congestion_drop:
+ skb = tcf_qevent_handle(&q->qe_early_drop, sch, skb, root_lock, to_free, &ret);
+ if (!skb)
+ return NET_XMIT_CN | ret;
+
qdisc_drop(skb, sch, to_free);
return NET_XMIT_CN;
}
@@ -202,6 +214,8 @@ static void red_destroy(struct Qdisc *sch)
{
struct red_sched_data *q = qdisc_priv(sch);
+ tcf_qevent_destroy(&q->qe_mark, sch);
+ tcf_qevent_destroy(&q->qe_early_drop, sch);
del_timer_sync(&q->adapt_timer);
red_offload(sch, false);
qdisc_put(q->qdisc);
@@ -213,6 +227,8 @@ static const struct nla_policy red_policy[TCA_RED_MAX + 1] = {
[TCA_RED_STAB] = { .len = RED_STAB_SIZE },
[TCA_RED_MAX_P] = { .type = NLA_U32 },
[TCA_RED_FLAGS] = NLA_POLICY_BITFIELD32(TC_RED_SUPPORTED_FLAGS),
+ [TCA_RED_EARLY_DROP_BLOCK] = { .type = NLA_U32 },
+ [TCA_RED_MARK_BLOCK] = { .type = NLA_U32 },
};
static int __red_change(struct Qdisc *sch, struct nlattr **tb,
@@ -328,12 +344,38 @@ static int red_init(struct Qdisc *sch, struct nlattr *opt,
q->qdisc = &noop_qdisc;
q->sch = sch;
timer_setup(&q->adapt_timer, red_adaptative_timer, 0);
- return __red_change(sch, tb, extack);
+
+ err = __red_change(sch, tb, extack);
+ if (err)
+ return err;
+
+ err = tcf_qevent_init(&q->qe_early_drop, sch,
+ FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP,
+ tb[TCA_RED_EARLY_DROP_BLOCK], extack);
+ if (err)
+ goto err_early_drop_init;
+
+ err = tcf_qevent_init(&q->qe_mark, sch,
+ FLOW_BLOCK_BINDER_TYPE_RED_MARK,
+ tb[TCA_RED_MARK_BLOCK], extack);
+ if (err)
+ goto err_mark_init;
+
+ return 0;
+
+err_mark_init:
+ tcf_qevent_destroy(&q->qe_early_drop, sch);
+err_early_drop_init:
+ del_timer_sync(&q->adapt_timer);
+ red_offload(sch, false);
+ qdisc_put(q->qdisc);
+ return err;
}
static int red_change(struct Qdisc *sch, struct nlattr *opt,
struct netlink_ext_ack *extack)
{
+ struct red_sched_data *q = qdisc_priv(sch);
struct nlattr *tb[TCA_RED_MAX + 1];
int err;
@@ -345,6 +387,16 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt,
if (err < 0)
return err;
+ err = tcf_qevent_validate_change(&q->qe_early_drop,
+ tb[TCA_RED_EARLY_DROP_BLOCK], extack);
+ if (err)
+ return err;
+
+ err = tcf_qevent_validate_change(&q->qe_mark,
+ tb[TCA_RED_MARK_BLOCK], extack);
+ if (err)
+ return err;
+
return __red_change(sch, tb, extack);
}
@@ -389,7 +441,9 @@ static int red_dump(struct Qdisc *sch, struct sk_buff *skb)
if (nla_put(skb, TCA_RED_PARMS, sizeof(opt), &opt) ||
nla_put_u32(skb, TCA_RED_MAX_P, q->parms.max_P) ||
nla_put_bitfield32(skb, TCA_RED_FLAGS,
- q->flags, TC_RED_SUPPORTED_FLAGS))
+ q->flags, TC_RED_SUPPORTED_FLAGS) ||
+ tcf_qevent_dump(skb, TCA_RED_MARK_BLOCK, &q->qe_mark) ||
+ tcf_qevent_dump(skb, TCA_RED_EARLY_DROP_BLOCK, &q->qe_early_drop))
goto nla_put_failure;
return nla_nest_end(skb, opts);