diff options
Diffstat (limited to 'target/linux/generic/backport-4.19/305-v4.16-netfilter-move-checksum_partial-indirection-to-struc.patch')
-rw-r--r-- | target/linux/generic/backport-4.19/305-v4.16-netfilter-move-checksum_partial-indirection-to-struc.patch | 204 |
1 files changed, 0 insertions, 204 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 deleted file mode 100644 index 19a0aacb45..0000000000 --- a/target/linux/generic/backport-4.19/305-v4.16-netfilter-move-checksum_partial-indirection-to-struc.patch +++ /dev/null @@ -1,204 +0,0 @@ -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); |