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, 105 insertions, 0 deletions

diff --git a/target/linux/generic/pending-4.14/271-uapi-libc-compat.h-do-not-rely-on-__GLIBC__.patch b/target/linux/generic/pending-4.14/271-uapi-libc-compat.h-do-not-rely-on-__GLIBC__.patch
new file mode 100644
index 0000000..9ae148d
--- /dev/null
+++ b/target/linux/generic/pending-4.14/271-uapi-libc-compat.h-do-not-rely-on-__GLIBC__.patch
@@ -0,0 +1,105 @@
+From: David Heidelberger <david.heidelberger@ixit.cz>
+Subject: uapi/libc-compat.h: do not rely on __GLIBC__
+
+Musl provides the same structs as glibc, but does not provide a define to
+allow its detection. Since the absence of __GLIBC__ also can mean that it
+is included from the kernel, change the __GLIBC__ detection to
+!__KERNEL__, which should always be true when included from userspace.
+
+Signed-off-by: John Spencer <maillist-linux@barfooze.de>
+Tested-by: David Heidelberger <david.heidelberger@ixit.cz>
+Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+---
+ include/uapi/linux/libc-compat.h | 18 +++++++++---------
+ 1 file changed, 9 insertions(+), 9 deletions(-)
+
+--- a/include/uapi/linux/libc-compat.h
++++ b/include/uapi/linux/libc-compat.h
+@@ -49,13 +49,13 @@
+ #ifndef _UAPI_LIBC_COMPAT_H
+ #define _UAPI_LIBC_COMPAT_H
+ 
+-/* We have included glibc headers... */
+-#if defined(__GLIBC__)
++/* We have included libc headers... */
++#if !defined(__KERNEL__)
+ 
+-/* Coordinate with glibc net/if.h header. */
+-#if defined(_NET_IF_H) && defined(__USE_MISC)
++/* Coordinate with libc net/if.h header. */
++#if defined(_NET_IF_H) && (!defined(__GLIBC__) || defined(__USE_MISC))
+ 
+-/* GLIBC headers included first so don't define anything
++/* LIBC headers included first so don't define anything
+  * that would already be defined. */
+ 
+ #define __UAPI_DEF_IF_IFCONF 0
+@@ -66,7 +66,11 @@
+ #define __UAPI_DEF_IF_NET_DEVICE_FLAGS 0
+ /* For the future if glibc adds IFF_LOWER_UP, IFF_DORMANT and IFF_ECHO */
+ #ifndef __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
++#ifdef __GLIBC__
+ #define __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO 1
++#else
++#define __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO 0
++#endif
+ #endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
+ 
+ #else /* _NET_IF_H */
+@@ -86,10 +90,10 @@
+ 
+ #endif /* _NET_IF_H */
+ 
+-/* Coordinate with glibc netinet/in.h header. */
++/* Coordinate with libc netinet/in.h header. */
+ #if defined(_NETINET_IN_H)
+ 
+-/* GLIBC headers included first so don't define anything
++/* LIBC headers included first so don't define anything
+  * that would already be defined. */
+ #define __UAPI_DEF_IN_ADDR		0
+ #define __UAPI_DEF_IN_IPPROTO		0
+@@ -103,7 +107,7 @@
+  * if the glibc code didn't define them. This guard matches
+  * the guard in glibc/inet/netinet/in.h which defines the
+  * additional in6_addr macros e.g. s6_addr16, and s6_addr32. */
+-#if defined(__USE_MISC) || defined (__USE_GNU)
++#if !defined(__GLIBC__) || defined(__USE_MISC) || defined (__USE_GNU)
+ #define __UAPI_DEF_IN6_ADDR_ALT		0
+ #else
+ #define __UAPI_DEF_IN6_ADDR_ALT		1
+@@ -118,7 +122,7 @@
+ #else
+ 
+ /* Linux headers included first, and we must define everything
+- * we need. The expectation is that glibc will check the
++ * we need. The expectation is that the libc will check the
+  * __UAPI_DEF_* defines and adjust appropriately. */
+ #define __UAPI_DEF_IN_ADDR		1
+ #define __UAPI_DEF_IN_IPPROTO		1
+@@ -128,7 +132,7 @@
+ #define __UAPI_DEF_IN_CLASS		1
+ 
+ #define __UAPI_DEF_IN6_ADDR		1
+-/* We unconditionally define the in6_addr macros and glibc must
++/* We unconditionally define the in6_addr macros and the libc must
+  * coordinate. */
+ #define __UAPI_DEF_IN6_ADDR_ALT		1
+ #define __UAPI_DEF_SOCKADDR_IN6		1
+@@ -169,7 +173,7 @@
+ /* If we did not see any headers from any supported C libraries,
+  * or we are being included in the kernel, then define everything
+  * that we need. */
+-#else /* !defined(__GLIBC__) */
++#else /* defined(__KERNEL__) */
+ 
+ /* Definitions for if.h */
+ #define __UAPI_DEF_IF_IFCONF 1
+@@ -209,6 +213,6 @@
+ /* Definitions for xattr.h */
+ #define __UAPI_DEF_XATTR		1
+ 
+-#endif /* __GLIBC__ */
++#endif /* __KERNEL__ */
+ 
+ #endif /* _UAPI_LIBC_COMPAT_H */