kernel: generic: Add kernel 4.14 support

This adds initial support for kernel 4.14 based on the patches for
kernel 4.9.

In the configuration I deactivated some of the new possible security
features like:
CONFIG_REFCOUNT_FULL
CONFIG_SLAB_FREELIST_HARDENED
CONFIG_SOFTLOCKUP_DETECTOR
CONFIG_WARN_ALL_UNSEEDED_RANDOM

And these overlay FS options are also deactivated:
CONFIG_OVERLAY_FS_INDEX
CONFIG_OVERLAY_FS_REDIRECT_DIR

I activated this:
CONFIG_FORTIFY_SOURCE
CONFIG_POSIX_TIMERS
CONFIG_SLAB_MERGE_DEFAULT
CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED

I am not sure if I did the porting correct for the following patches:
target/linux/generic/backport-4.14/020-backport_netfilter_rtcache.patch
target/linux/generic/hack-4.14/220-gc_sections.patch
target/linux/generic/hack-4.14/321-powerpc_crtsavres_prereq.patch
target/linux/generic/pending-4.14/305-mips_module_reloc.patch
target/linux/generic/pending-4.14/611-netfilter_match_bypass_default_table.patch
target/linux/generic/pending-4.14/680-NET-skip-GRO-for-foreign-MAC-addresses.patch

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 94 insertions, 0 deletions

diff --git a/target/linux/generic/hack-4.14/661-use_fq_codel_by_default.patch b/target/linux/generic/hack-4.14/661-use_fq_codel_by_default.patch
new file mode 100644
index 0000000000..ae911db870
--- /dev/null
+++ b/target/linux/generic/hack-4.14/661-use_fq_codel_by_default.patch
@@ -0,0 +1,94 @@
+From 1d418f7e88035ed7a94073f6354246c66e9193e9 Mon Sep 17 00:00:00 2001
+From: Felix Fietkau <nbd@nbd.name>
+Date: Fri, 7 Jul 2017 17:22:58 +0200
+Subject: fq_codel: switch default qdisc from pfifo_fast to fq_codel and remove pfifo_fast
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ include/net/sch_generic.h | 3 ++-
+ net/sched/Kconfig         | 3 ++-
+ net/sched/sch_api.c       | 2 +-
+ net/sched/sch_fq_codel.c  | 3 ++-
+ net/sched/sch_generic.c   | 4 ++--
+ 5 files changed, 9 insertions(+), 6 deletions(-)
+
+--- a/include/net/sch_generic.h
++++ b/include/net/sch_generic.h
+@@ -369,12 +369,13 @@ 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 noqueue_qdisc_ops;
++extern struct Qdisc_ops fq_codel_qdisc_ops;
+ extern const struct Qdisc_ops *default_qdisc_ops;
+ static inline const struct Qdisc_ops *
+ get_default_qdisc_ops(const struct net_device *dev, int ntx)
+ {
+ 	return ntx < dev->real_num_tx_queues ?
+-			default_qdisc_ops : &pfifo_fast_ops;
++			default_qdisc_ops : &fq_codel_qdisc_ops;
+ }
+ 
+ struct Qdisc_class_common {
+--- a/net/sched/Kconfig
++++ b/net/sched/Kconfig
+@@ -3,8 +3,9 @@
+ # 
+ 
+ menuconfig NET_SCHED
+-	bool "QoS and/or fair queueing"
++	def_bool y
+ 	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_api.c
++++ b/net/sched/sch_api.c
+@@ -2014,7 +2014,7 @@ static int __init pktsched_init(void)
+ 		return err;
+ 	}
+ 
+-	register_qdisc(&pfifo_fast_ops);
++	register_qdisc(&fq_codel_qdisc_ops);
+ 	register_qdisc(&pfifo_qdisc_ops);
+ 	register_qdisc(&bfifo_qdisc_ops);
+ 	register_qdisc(&pfifo_head_drop_qdisc_ops);
+--- a/net/sched/sch_fq_codel.c
++++ b/net/sched/sch_fq_codel.c
+@@ -694,7 +694,7 @@ 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),
+@@ -709,6 +709,7 @@ 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/net/sched/sch_generic.c
++++ b/net/sched/sch_generic.c
+@@ -32,7 +32,7 @@
+ #include <trace/events/qdisc.h>
+ 
+ /* Qdisc to use by default */
+-const struct Qdisc_ops *default_qdisc_ops = &pfifo_fast_ops;
++const struct Qdisc_ops *default_qdisc_ops = &fq_codel_qdisc_ops;
+ EXPORT_SYMBOL(default_qdisc_ops);
+ 
+ /* Main transmission queue. */
+@@ -764,7 +764,7 @@ static void attach_one_default_qdisc(str
+ 				     void *_unused)
+ {
+ 	struct Qdisc *qdisc;
+-	const struct Qdisc_ops *ops = default_qdisc_ops;
++	const struct Qdisc_ops *ops = &fq_codel_qdisc_ops;
+ 
+ 	if (dev->priv_flags & IFF_NO_QUEUE)
+ 		ops = &noqueue_qdisc_ops;