Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1958 commits)
  net: pack skb_shared_info more efficiently
  net_sched: red: split red_parms into parms and vars
  net_sched: sfq: extend limits
  cnic: Improve error recovery on bnx2x devices
  cnic: Re-init dev->stats_addr after chip reset
  net_sched: Bug in netem reordering
  bna: fix sparse warnings/errors
  bna: make ethtool_ops and strings const
  xgmac: cleanups
  net: make ethtool_ops const
  vmxnet3" make ethtool ops const
  xen-netback: make ops structs const
  virtio_net: Pass gfp flags when allocating rx buffers.
  ixgbe: FCoE: Add support for ndo_get_fcoe_hbainfo() call
  netdev: FCoE: Add new ndo_get_fcoe_hbainfo() call
  igb: reset PHY after recovering from PHY power down
  igb: add basic runtime PM support
  igb: Add support for byte queue limits.
  e1000: cleanup CE4100 MDIO registers access
  e1000: unmap ce4100_gbe_mdio_base_virt in e1000_remove
  ...

1 files changed, 44 insertions, 13 deletions

diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index d617161f8dd..a5cc3012cf4 100644
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -39,7 +39,9 @@
 struct red_sched_data {
 	u32			limit;		/* HARD maximal queue length */
 	unsigned char		flags;
+	struct timer_list	adapt_timer;
 	struct red_parms	parms;
+	struct red_vars		vars;
 	struct red_stats	stats;
 	struct Qdisc		*qdisc;
 };
@@ -60,12 +62,14 @@ static int red_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 	struct Qdisc *child = q->qdisc;
 	int ret;
 
-	q->parms.qavg = red_calc_qavg(&q->parms, child->qstats.backlog);
+	q->vars.qavg = red_calc_qavg(&q->parms,
+				     &q->vars,
+				     child->qstats.backlog);
 
-	if (red_is_idling(&q->parms))
-		red_end_of_idle_period(&q->parms);
+	if (red_is_idling(&q->vars))
+		red_end_of_idle_period(&q->vars);
 
-	switch (red_action(&q->parms, q->parms.qavg)) {
+	switch (red_action(&q->parms, &q->vars, q->vars.qavg)) {
 	case RED_DONT_MARK:
 		break;
 
@@ -116,8 +120,8 @@ static struct sk_buff *red_dequeue(struct Qdisc *sch)
 		qdisc_bstats_update(sch, skb);
 		sch->q.qlen--;
 	} else {
-		if (!red_is_idling(&q->parms))
-			red_start_of_idle_period(&q->parms);
+		if (!red_is_idling(&q->vars))
+			red_start_of_idle_period(&q->vars);
 	}
 	return skb;
 }
@@ -143,8 +147,8 @@ static unsigned int red_drop(struct Qdisc *sch)
 		return len;
 	}
 
-	if (!red_is_idling(&q->parms))
-		red_start_of_idle_period(&q->parms);
+	if (!red_is_idling(&q->vars))
+		red_start_of_idle_period(&q->vars);
 
 	return 0;
 }
@@ -155,18 +159,21 @@ static void red_reset(struct Qdisc *sch)
 
 	qdisc_reset(q->qdisc);
 	sch->q.qlen = 0;
-	red_restart(&q->parms);
+	red_restart(&q->vars);
 }
 
 static void red_destroy(struct Qdisc *sch)
 {
 	struct red_sched_data *q = qdisc_priv(sch);
+
+	del_timer_sync(&q->adapt_timer);
 	qdisc_destroy(q->qdisc);
 }
 
 static const struct nla_policy red_policy[TCA_RED_MAX + 1] = {
 	[TCA_RED_PARMS]	= { .len = sizeof(struct tc_red_qopt) },
 	[TCA_RED_STAB]	= { .len = RED_STAB_SIZE },
+	[TCA_RED_MAX_P] = { .type = NLA_U32 },
 };
 
 static int red_change(struct Qdisc *sch, struct nlattr *opt)
@@ -176,6 +183,7 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt)
 	struct tc_red_qopt *ctl;
 	struct Qdisc *child = NULL;
 	int err;
+	u32 max_P;
 
 	if (opt == NULL)
 		return -EINVAL;
@@ -188,6 +196,8 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt)
 	    tb[TCA_RED_STAB] == NULL)
 		return -EINVAL;
 
+	max_P = tb[TCA_RED_MAX_P] ? nla_get_u32(tb[TCA_RED_MAX_P]) : 0;
+
 	ctl = nla_data(tb[TCA_RED_PARMS]);
 
 	if (ctl->limit > 0) {
@@ -205,22 +215,42 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt)
 		q->qdisc = child;
 	}
 
-	red_set_parms(&q->parms, ctl->qth_min, ctl->qth_max, ctl->Wlog,
-				 ctl->Plog, ctl->Scell_log,
-				 nla_data(tb[TCA_RED_STAB]));
+	red_set_parms(&q->parms,
+		      ctl->qth_min, ctl->qth_max, ctl->Wlog,
+		      ctl->Plog, ctl->Scell_log,
+		      nla_data(tb[TCA_RED_STAB]),
+		      max_P);
+	red_set_vars(&q->vars);
+
+	del_timer(&q->adapt_timer);
+	if (ctl->flags & TC_RED_ADAPTATIVE)
+		mod_timer(&q->adapt_timer, jiffies + HZ/2);
 
 	if (!q->qdisc->q.qlen)
-		red_start_of_idle_period(&q->parms);
+		red_start_of_idle_period(&q->vars);
 
 	sch_tree_unlock(sch);
 	return 0;
 }
 
+static inline void red_adaptative_timer(unsigned long arg)
+{
+	struct Qdisc *sch = (struct Qdisc *)arg;
+	struct red_sched_data *q = qdisc_priv(sch);
+	spinlock_t *root_lock = qdisc_lock(qdisc_root_sleeping(sch));
+
+	spin_lock(root_lock);
+	red_adaptative_algo(&q->parms, &q->vars);
+	mod_timer(&q->adapt_timer, jiffies + HZ/2);
+	spin_unlock(root_lock);
+}
+
 static int red_init(struct Qdisc *sch, struct nlattr *opt)
 {
 	struct red_sched_data *q = qdisc_priv(sch);
 
 	q->qdisc = &noop_qdisc;
+	setup_timer(&q->adapt_timer, red_adaptative_timer, (unsigned long)sch);
 	return red_change(sch, opt);
 }
 
@@ -243,6 +273,7 @@ static int red_dump(struct Qdisc *sch, struct sk_buff *skb)
 	if (opts == NULL)
 		goto nla_put_failure;
 	NLA_PUT(skb, TCA_RED_PARMS, sizeof(opt), &opt);
+	NLA_PUT_U32(skb, TCA_RED_MAX_P, q->parms.max_P);
 	return nla_nest_end(skb, opts);
 
 nla_put_failure: