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netfilter: ip6_tables: ip6t_ext_hdr is now static inline

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We may hit this in xt_LOG:

net/built-in.o:xt_LOG.c:function dump_ipv6_packet:
	error: undefined reference to 'ip6t_ext_hdr'

happens with these config options:

CONFIG_NETFILTER_XT_TARGET_LOG=y
CONFIG_IP6_NF_IPTABLES=m

ip6t_ext_hdr is fairly small and it is called in the packet path.
Make it static inline.

Reported-by: Simon Kirby <sim@netnation.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2012-04-06 18:12:54 +02:00
parent 6ee0b693bd
commit 95ad2f873d
2 changed files with 11 additions and 15 deletions
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12
include/linux/netfilter_ipv6/ip6_tables.h
View File

@ -287,7 +287,17 @@ extern unsigned int ip6t_do_table(struct sk_buff *skb,
struct xt_table *table);
/* Check for an extension */
extern int ip6t_ext_hdr(u8 nexthdr);
static inline int
ip6t_ext_hdr(u8 nexthdr)
{ return (nexthdr == IPPROTO_HOPOPTS) ||
(nexthdr == IPPROTO_ROUTING) ||
(nexthdr == IPPROTO_FRAGMENT) ||
(nexthdr == IPPROTO_ESP) ||
(nexthdr == IPPROTO_AH) ||
(nexthdr == IPPROTO_NONE) ||
(nexthdr == IPPROTO_DSTOPTS);
}
/* find specified header and get offset to it */
extern int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
int target, unsigned short *fragoff);

14
net/ipv6/netfilter/ip6_tables.c
View File

@ -78,19 +78,6 @@ EXPORT_SYMBOL_GPL(ip6t_alloc_initial_table);
Hence the start of any table is given by get_table() below. */
/* Check for an extension */
int
ip6t_ext_hdr(u8 nexthdr)
{
return (nexthdr == IPPROTO_HOPOPTS) ||
(nexthdr == IPPROTO_ROUTING) ||
(nexthdr == IPPROTO_FRAGMENT) ||
(nexthdr == IPPROTO_ESP) ||
(nexthdr == IPPROTO_AH) ||
(nexthdr == IPPROTO_NONE) ||
(nexthdr == IPPROTO_DSTOPTS);
}
/* Returns whether matches rule or not. */
/* Performance critical - called for every packet */
static inline bool
@ -2366,7 +2353,6 @@ int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
EXPORT_SYMBOL(ip6t_register_table);
EXPORT_SYMBOL(ip6t_unregister_table);
EXPORT_SYMBOL(ip6t_do_table);
EXPORT_SYMBOL(ip6t_ext_hdr);
EXPORT_SYMBOL(ipv6_find_hdr);
module_init(ip6_tables_init);