diff options
Diffstat (limited to 'target/linux/generic/patches-3.3/046-fq_codel-qdisc-backlog.patch')
| -rw-r--r-- | target/linux/generic/patches-3.3/046-fq_codel-qdisc-backlog.patch | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/target/linux/generic/patches-3.3/046-fq_codel-qdisc-backlog.patch b/target/linux/generic/patches-3.3/046-fq_codel-qdisc-backlog.patch deleted file mode 100644 index f9bcbbd08f..0000000000 --- a/target/linux/generic/patches-3.3/046-fq_codel-qdisc-backlog.patch +++ /dev/null @@ -1,132 +0,0 @@ -From 7bd90773f89001ea4960ed47676b550137f3facb Mon Sep 17 00:00:00 2001 -From: Eric Dumazet <edumazet@google.com> -Date: Wed, 16 May 2012 04:39:09 +0000 -Subject: [PATCH] fq_codel: should use qdisc backlog as threshold - -commit 865ec5523dadbedefbc5710a68969f686a28d928 upstream. - -codel_should_drop() logic allows a packet being not dropped if queue -size is under max packet size. - -In fq_codel, we have two possible backlogs : The qdisc global one, and -the flow local one. - -The meaningful one for codel_should_drop() should be the global backlog, -not the per flow one, so that thin flows can have a non zero drop/mark -probability. - -Signed-off-by: Eric Dumazet <edumazet@google.com> -Cc: Dave Taht <dave.taht@bufferbloat.net> -Cc: Kathleen Nichols <nichols@pollere.com> -Cc: Van Jacobson <van@pollere.net> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - include/net/codel.h | 15 +++++++-------- - net/sched/sch_codel.c | 4 ++-- - net/sched/sch_fq_codel.c | 5 +++-- - 3 files changed, 12 insertions(+), 12 deletions(-) - ---- a/include/net/codel.h -+++ b/include/net/codel.h -@@ -205,7 +205,7 @@ static codel_time_t codel_control_law(co - - - static bool codel_should_drop(const struct sk_buff *skb, -- unsigned int *backlog, -+ struct Qdisc *sch, - struct codel_vars *vars, - struct codel_params *params, - struct codel_stats *stats, -@@ -219,13 +219,13 @@ static bool codel_should_drop(const stru - } - - vars->ldelay = now - codel_get_enqueue_time(skb); -- *backlog -= qdisc_pkt_len(skb); -+ sch->qstats.backlog -= qdisc_pkt_len(skb); - - if (unlikely(qdisc_pkt_len(skb) > stats->maxpacket)) - stats->maxpacket = qdisc_pkt_len(skb); - - if (codel_time_before(vars->ldelay, params->target) || -- *backlog <= stats->maxpacket) { -+ sch->qstats.backlog <= stats->maxpacket) { - /* went below - stay below for at least interval */ - vars->first_above_time = 0; - return false; -@@ -249,8 +249,7 @@ static struct sk_buff *codel_dequeue(str - struct codel_params *params, - struct codel_vars *vars, - struct codel_stats *stats, -- codel_skb_dequeue_t dequeue_func, -- u32 *backlog) -+ codel_skb_dequeue_t dequeue_func) - { - struct sk_buff *skb = dequeue_func(vars, sch); - codel_time_t now; -@@ -261,7 +260,7 @@ static struct sk_buff *codel_dequeue(str - return skb; - } - now = codel_get_time(); -- drop = codel_should_drop(skb, backlog, vars, params, stats, now); -+ drop = codel_should_drop(skb, sch, vars, params, stats, now); - if (vars->dropping) { - if (!drop) { - /* sojourn time below target - leave dropping state */ -@@ -292,7 +291,7 @@ static struct sk_buff *codel_dequeue(str - qdisc_drop(skb, sch); - stats->drop_count++; - skb = dequeue_func(vars, sch); -- if (!codel_should_drop(skb, backlog, -+ if (!codel_should_drop(skb, sch, - vars, params, stats, now)) { - /* leave dropping state */ - vars->dropping = false; -@@ -313,7 +312,7 @@ static struct sk_buff *codel_dequeue(str - stats->drop_count++; - - skb = dequeue_func(vars, sch); -- drop = codel_should_drop(skb, backlog, vars, params, -+ drop = codel_should_drop(skb, sch, vars, params, - stats, now); - } - vars->dropping = true; ---- a/net/sched/sch_codel.c -+++ b/net/sched/sch_codel.c -@@ -77,8 +77,8 @@ static struct sk_buff *codel_qdisc_deque - struct codel_sched_data *q = qdisc_priv(sch); - struct sk_buff *skb; - -- skb = codel_dequeue(sch, &q->params, &q->vars, &q->stats, -- dequeue, &sch->qstats.backlog); -+ skb = codel_dequeue(sch, &q->params, &q->vars, &q->stats, dequeue); -+ - /* We cant call qdisc_tree_decrease_qlen() if our qlen is 0, - * or HTB crashes. Defer it for next round. - */ ---- a/net/sched/sch_fq_codel.c -+++ b/net/sched/sch_fq_codel.c -@@ -217,13 +217,14 @@ static int fq_codel_enqueue(struct sk_bu - */ - static struct sk_buff *dequeue(struct codel_vars *vars, struct Qdisc *sch) - { -+ struct fq_codel_sched_data *q = qdisc_priv(sch); - struct fq_codel_flow *flow; - struct sk_buff *skb = NULL; - - flow = container_of(vars, struct fq_codel_flow, cvars); - if (flow->head) { - skb = dequeue_head(flow); -- sch->qstats.backlog -= qdisc_pkt_len(skb); -+ q->backlogs[flow - q->flows] -= qdisc_pkt_len(skb); - sch->q.qlen--; - } - return skb; -@@ -256,7 +257,7 @@ begin: - prev_ecn_mark = q->cstats.ecn_mark; - - skb = codel_dequeue(sch, &q->cparams, &flow->cvars, &q->cstats, -- dequeue, &q->backlogs[flow - q->flows]); -+ dequeue); - - flow->dropped += q->cstats.drop_count - prev_drop_count; - flow->dropped += q->cstats.ecn_mark - prev_ecn_mark; |