kernel: Copy patches from kernel 4.14 to 4.19

This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.

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

1 files changed, 204 insertions, 0 deletions

diff --git a/target/linux/generic/backport-4.19/305-v4.16-netfilter-move-checksum_partial-indirection-to-struc.patch b/target/linux/generic/backport-4.19/305-v4.16-netfilter-move-checksum_partial-indirection-to-struc.patch
new file mode 100644
index 0000000000..19a0aacb45
--- /dev/null
+++ b/target/linux/generic/backport-4.19/305-v4.16-netfilter-move-checksum_partial-indirection-to-struc.patch
@@ -0,0 +1,204 @@
+From: Pablo Neira Ayuso <pablo@netfilter.org>
+Date: Wed, 20 Dec 2017 16:04:18 +0100
+Subject: [PATCH] netfilter: move checksum_partial indirection to struct
+ nf_ipv6_ops
+
+We cannot make a direct call to nf_ip6_checksum_partial() because that
+would result in autoloading the 'ipv6' module because of symbol
+dependencies.  Therefore, define checksum_partial indirection in
+nf_ipv6_ops where this really belongs to.
+
+For IPv4, we can indeed make a direct function call, which is faster,
+given IPv4 is built-in in the networking code by default. Still,
+CONFIG_INET=n and CONFIG_NETFILTER=y is possible, so define empty inline
+stub for IPv4 in such case.
+
+Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
+---
+
+--- a/include/linux/netfilter.h
++++ b/include/linux/netfilter.h
+@@ -311,11 +311,6 @@ struct nf_queue_entry;
+ 
+ struct nf_afinfo {
+ 	unsigned short	family;
+-	__sum16		(*checksum_partial)(struct sk_buff *skb,
+-					    unsigned int hook,
+-					    unsigned int dataoff,
+-					    unsigned int len,
+-					    u_int8_t protocol);
+ 	int		(*route)(struct net *net, struct dst_entry **dst,
+ 				 struct flowi *fl, bool strict);
+ 	void		(*saveroute)(const struct sk_buff *skb,
+@@ -335,22 +330,9 @@ __sum16 nf_checksum(struct sk_buff *skb,
+ 		    unsigned int dataoff, u_int8_t protocol,
+ 		    unsigned short family);
+ 
+-static inline __sum16
+-nf_checksum_partial(struct sk_buff *skb, unsigned int hook,
+-		    unsigned int dataoff, unsigned int len,
+-		    u_int8_t protocol, unsigned short family)
+-{
+-	const struct nf_afinfo *afinfo;
+-	__sum16 csum = 0;
+-
+-	rcu_read_lock();
+-	afinfo = nf_get_afinfo(family);
+-	if (afinfo)
+-		csum = afinfo->checksum_partial(skb, hook, dataoff, len,
+-						protocol);
+-	rcu_read_unlock();
+-	return csum;
+-}
++__sum16 nf_checksum_partial(struct sk_buff *skb, unsigned int hook,
++			    unsigned int dataoff, unsigned int len,
++			    u_int8_t protocol, unsigned short family);
+ 
+ int nf_register_afinfo(const struct nf_afinfo *afinfo);
+ void nf_unregister_afinfo(const struct nf_afinfo *afinfo);
+--- a/include/linux/netfilter_ipv4.h
++++ b/include/linux/netfilter_ipv4.h
+@@ -11,12 +11,23 @@ int ip_route_me_harder(struct net *net,
+ #ifdef CONFIG_INET
+ __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
+ 		       unsigned int dataoff, u_int8_t protocol);
++__sum16 nf_ip_checksum_partial(struct sk_buff *skb, unsigned int hook,
++			       unsigned int dataoff, unsigned int len,
++			       u_int8_t protocol);
+ #else
+ static inline __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
+ 				     unsigned int dataoff, u_int8_t protocol)
+ {
+ 	return 0;
+ }
++static inline __sum16 nf_ip_checksum_partial(struct sk_buff *skb,
++					     unsigned int hook,
++					     unsigned int dataoff,
++					     unsigned int len,
++					     u_int8_t protocol)
++{
++	return 0;
++}
+ #endif /* CONFIG_INET */
+ 
+ #endif /*__LINUX_IP_NETFILTER_H*/
+--- a/include/linux/netfilter_ipv6.h
++++ b/include/linux/netfilter_ipv6.h
+@@ -21,6 +21,9 @@ struct nf_ipv6_ops {
+ 			int (*output)(struct net *, struct sock *, struct sk_buff *));
+ 	__sum16 (*checksum)(struct sk_buff *skb, unsigned int hook,
+ 			    unsigned int dataoff, u_int8_t protocol);
++	__sum16 (*checksum_partial)(struct sk_buff *skb, unsigned int hook,
++				    unsigned int dataoff, unsigned int len,
++				    u_int8_t protocol);
+ };
+ 
+ #ifdef CONFIG_NETFILTER
+--- a/net/bridge/netfilter/nf_tables_bridge.c
++++ b/net/bridge/netfilter/nf_tables_bridge.c
+@@ -106,13 +106,6 @@ static int nf_br_reroute(struct net *net
+ 	return 0;
+ }
+ 
+-static __sum16 nf_br_checksum_partial(struct sk_buff *skb, unsigned int hook,
+-				      unsigned int dataoff, unsigned int len,
+-				      u_int8_t protocol)
+-{
+-	return 0;
+-}
+-
+ static int nf_br_route(struct net *net, struct dst_entry **dst,
+ 		       struct flowi *fl, bool strict __always_unused)
+ {
+@@ -121,7 +114,6 @@ static int nf_br_route(struct net *net,
+ 
+ static const struct nf_afinfo nf_br_afinfo = {
+ 	.family                 = AF_BRIDGE,
+-	.checksum_partial       = nf_br_checksum_partial,
+ 	.route                  = nf_br_route,
+ 	.saveroute              = nf_br_saveroute,
+ 	.reroute                = nf_br_reroute,
+--- a/net/ipv4/netfilter.c
++++ b/net/ipv4/netfilter.c
+@@ -155,9 +155,9 @@ __sum16 nf_ip_checksum(struct sk_buff *s
+ }
+ EXPORT_SYMBOL(nf_ip_checksum);
+ 
+-static __sum16 nf_ip_checksum_partial(struct sk_buff *skb, unsigned int hook,
+-				      unsigned int dataoff, unsigned int len,
+-				      u_int8_t protocol)
++__sum16 nf_ip_checksum_partial(struct sk_buff *skb, unsigned int hook,
++			       unsigned int dataoff, unsigned int len,
++			       u_int8_t protocol)
+ {
+ 	const struct iphdr *iph = ip_hdr(skb);
+ 	__sum16 csum = 0;
+@@ -175,6 +175,7 @@ static __sum16 nf_ip_checksum_partial(st
+ 	}
+ 	return csum;
+ }
++EXPORT_SYMBOL_GPL(nf_ip_checksum_partial);
+ 
+ static int nf_ip_route(struct net *net, struct dst_entry **dst,
+ 		       struct flowi *fl, bool strict __always_unused)
+@@ -188,7 +189,6 @@ static int nf_ip_route(struct net *net,
+ 
+ static const struct nf_afinfo nf_ip_afinfo = {
+ 	.family			= AF_INET,
+-	.checksum_partial	= nf_ip_checksum_partial,
+ 	.route			= nf_ip_route,
+ 	.saveroute		= nf_ip_saveroute,
+ 	.reroute		= nf_ip_reroute,
+--- a/net/ipv6/netfilter.c
++++ b/net/ipv6/netfilter.c
+@@ -191,15 +191,15 @@ static __sum16 nf_ip6_checksum_partial(s
+ };
+ 
+ static const struct nf_ipv6_ops ipv6ops = {
+-	.chk_addr	= ipv6_chk_addr,
+-	.route_input    = ip6_route_input,
+-	.fragment	= ip6_fragment,
+-	.checksum	= nf_ip6_checksum,
++	.chk_addr		= ipv6_chk_addr,
++	.route_input    	= ip6_route_input,
++	.fragment		= ip6_fragment,
++	.checksum		= nf_ip6_checksum,
++	.checksum_partial	= nf_ip6_checksum_partial,
+ };
+ 
+ static const struct nf_afinfo nf_ip6_afinfo = {
+ 	.family			= AF_INET6,
+-	.checksum_partial	= nf_ip6_checksum_partial,
+ 	.route			= nf_ip6_route,
+ 	.saveroute		= nf_ip6_saveroute,
+ 	.reroute		= nf_ip6_reroute,
+--- a/net/netfilter/utils.c
++++ b/net/netfilter/utils.c
+@@ -24,3 +24,27 @@ __sum16 nf_checksum(struct sk_buff *skb,
+ 	return csum;
+ }
+ EXPORT_SYMBOL_GPL(nf_checksum);
++
++__sum16 nf_checksum_partial(struct sk_buff *skb, unsigned int hook,
++			    unsigned int dataoff, unsigned int len,
++			    u_int8_t protocol, unsigned short family)
++{
++	const struct nf_ipv6_ops *v6ops;
++	__sum16 csum = 0;
++
++	switch (family) {
++	case AF_INET:
++		csum = nf_ip_checksum_partial(skb, hook, dataoff, len,
++					      protocol);
++		break;
++	case AF_INET6:
++		v6ops = rcu_dereference(nf_ipv6_ops);
++		if (v6ops)
++			csum = v6ops->checksum_partial(skb, hook, dataoff, len,
++						       protocol);
++		break;
++	}
++
++	return csum;
++}
++EXPORT_SYMBOL_GPL(nf_checksum_partial);