kernel: switch default qdisc from pfifo_fast to fq_codel and remove pfifo_fast

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36304 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 72 insertions, 0 deletions

diff --git a/target/linux/generic/patches-3.8/662-use_fq_codel_by_default.patch b/target/linux/generic/patches-3.8/662-use_fq_codel_by_default.patch
new file mode 100644
index 000000000..9fb2e2e80
--- /dev/null
+++ b/target/linux/generic/patches-3.8/662-use_fq_codel_by_default.patch
@@ -0,0 +1,72 @@
+--- a/net/sched/Kconfig
++++ b/net/sched/Kconfig
+@@ -5,6 +5,7 @@
+ menuconfig NET_SCHED
+ 	bool "QoS and/or fair queueing"
+ 	select NET_SCH_FIFO
++	select NET_SCH_FQ_CODEL
+ 	---help---
+ 	  When the kernel has several packets to send out over a network
+ 	  device, it has to decide which ones to send first, which ones to
+--- a/net/sched/sch_fq_codel.c
++++ b/net/sched/sch_fq_codel.c
+@@ -594,7 +594,7 @@ static const struct Qdisc_class_ops fq_c
+ 	.walk		=	fq_codel_walk,
+ };
+ 
+-static struct Qdisc_ops fq_codel_qdisc_ops __read_mostly = {
++struct Qdisc_ops fq_codel_qdisc_ops __read_mostly = {
+ 	.cl_ops		=	&fq_codel_class_ops,
+ 	.id		=	"fq_codel",
+ 	.priv_size	=	sizeof(struct fq_codel_sched_data),
+@@ -610,6 +610,7 @@ static struct Qdisc_ops fq_codel_qdisc_o
+ 	.dump_stats =	fq_codel_dump_stats,
+ 	.owner		=	THIS_MODULE,
+ };
++EXPORT_SYMBOL(fq_codel_qdisc_ops);
+ 
+ static int __init fq_codel_module_init(void)
+ {
+--- a/include/net/sch_generic.h
++++ b/include/net/sch_generic.h
+@@ -315,6 +315,7 @@ extern struct Qdisc noop_qdisc;
+ extern struct Qdisc_ops noop_qdisc_ops;
+ extern struct Qdisc_ops pfifo_fast_ops;
+ extern struct Qdisc_ops mq_qdisc_ops;
++extern struct Qdisc_ops fq_codel_qdisc_ops;
+ 
+ struct Qdisc_class_common {
+ 	u32			classid;
+--- a/net/sched/sch_generic.c
++++ b/net/sched/sch_generic.c
+@@ -680,7 +680,7 @@ static void attach_one_default_qdisc(str
+ 
+ 	if (dev->tx_queue_len) {
+ 		qdisc = qdisc_create_dflt(dev_queue,
+-					  &pfifo_fast_ops, TC_H_ROOT);
++					  &fq_codel_qdisc_ops, TC_H_ROOT);
+ 		if (!qdisc) {
+ 			netdev_info(dev, "activation failed\n");
+ 			return;
+--- a/net/sched/sch_mq.c
++++ b/net/sched/sch_mq.c
+@@ -57,7 +57,7 @@ static int mq_init(struct Qdisc *sch, st
+ 
+ 	for (ntx = 0; ntx < dev->num_tx_queues; ntx++) {
+ 		dev_queue = netdev_get_tx_queue(dev, ntx);
+-		qdisc = qdisc_create_dflt(dev_queue, &pfifo_fast_ops,
++		qdisc = qdisc_create_dflt(dev_queue, &fq_codel_qdisc_ops,
+ 					  TC_H_MAKE(TC_H_MAJ(sch->handle),
+ 						    TC_H_MIN(ntx + 1)));
+ 		if (qdisc == NULL)
+--- a/net/sched/sch_mqprio.c
++++ b/net/sched/sch_mqprio.c
+@@ -124,7 +124,7 @@ static int mqprio_init(struct Qdisc *sch
+ 
+ 	for (i = 0; i < dev->num_tx_queues; i++) {
+ 		dev_queue = netdev_get_tx_queue(dev, i);
+-		qdisc = qdisc_create_dflt(dev_queue, &pfifo_fast_ops,
++		qdisc = qdisc_create_dflt(dev_queue, &fq_codel_qdisc_ops,
+ 					  TC_H_MAKE(TC_H_MAJ(sch->handle),
+ 						    TC_H_MIN(i + 1)));
+ 		if (qdisc == NULL) {