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ipv6: export a stub for IPv6 symbols used by vxlan

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In case IPv6 is compiled as a module, introduce a stub
for ipv6_sock_mc_join and ipv6_sock_mc_drop etc.. It will be used
by vxlan module. Suggested by Ben.

This is an ugly but easy solution for now.

Cc: Ben Hutchings <bhutchings@solarflare.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cong Wang 2013-08-31 13:44:30 +08:00 committed by David S. Miller
parent 788787b559
commit 5f81bd2e5d
3 changed files with 29 additions and 0 deletions
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15
include/net/addrconf.h
View File

@ -141,6 +141,21 @@ bool ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group,
const struct in6_addr *src_addr);
void ipv6_mc_dad_complete(struct inet6_dev *idev);
/* A stub used by vxlan module. This is ugly, ideally these
* symbols should be built into the core kernel.
*/
struct ipv6_stub {
int (*ipv6_sock_mc_join)(struct sock *sk, int ifindex,
const struct in6_addr *addr);
int (*ipv6_sock_mc_drop)(struct sock *sk, int ifindex,
const struct in6_addr *addr);
int (*ipv6_dst_lookup)(struct sock *sk, struct dst_entry **dst,
struct flowi6 *fl6);
void (*udpv6_encap_enable)(void);
};
extern const struct ipv6_stub *ipv6_stub __read_mostly;
/*
* identify MLD packets for MLD filter exceptions
*/

3
net/ipv6/addrconf_core.c
View File

@ -98,3 +98,6 @@ int inet6addr_notifier_call_chain(unsigned long val, void *v)
return atomic_notifier_call_chain(&inet6addr_chain, val, v);
}
EXPORT_SYMBOL(inet6addr_notifier_call_chain);
const struct ipv6_stub *ipv6_stub __read_mostly;
EXPORT_SYMBOL_GPL(ipv6_stub);

11
net/ipv6/af_inet6.c
View File

@ -810,6 +810,13 @@ static struct pernet_operations inet6_net_ops = {
.exit = inet6_net_exit,
};
static const struct ipv6_stub ipv6_stub_impl = {
.ipv6_sock_mc_join = ipv6_sock_mc_join,
.ipv6_sock_mc_drop = ipv6_sock_mc_drop,
.ipv6_dst_lookup = ip6_dst_lookup,
.udpv6_encap_enable = udpv6_encap_enable,
};
static int __init inet6_init(void)
{
struct list_head *r;
@ -884,6 +891,9 @@ static int __init inet6_init(void)
err = igmp6_init();
if (err)
goto igmp_fail;
ipv6_stub = &ipv6_stub_impl;
err = ipv6_netfilter_init();
if (err)
goto netfilter_fail;
@ -1040,6 +1050,7 @@ static void __exit inet6_exit(void)
raw6_proc_exit();
#endif
ipv6_netfilter_fini();
ipv6_stub = NULL;
igmp6_cleanup();
ndisc_cleanup();
ip6_mr_cleanup();