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ipv6: by default join ff01::1 and in case of forwarding ff01::2 and ff05:2 

Cc: Erik Hugne <erik.hugne@ericsson.com>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hannes Frederic Sowa 2013-02-10 03:50:18 +00:00 committed by David S. Miller
parent 20314092c1
commit 2c5e893384
2 changed files with 22 additions and 2 deletions
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9
include/linux/in6.h
View File

@ -36,4 +36,13 @@ extern const struct in6_addr in6addr_linklocal_allnodes;
extern const struct in6_addr in6addr_linklocal_allrouters;
#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
{ { { 0xff,2,0,0,0,0,0,0,0,0,0,0,0,0,0,2 } } }
extern const struct in6_addr in6addr_interfacelocal_allnodes;
#define IN6ADDR_INTERFACELOCAL_ALLNODES_INIT \
{ { { 0xff,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
extern const struct in6_addr in6addr_interfacelocal_allrouters;
#define IN6ADDR_INTERFACELOCAL_ALLROUTERS_INIT \
{ { { 0xff,1,0,0,0,0,0,0,0,0,0,0,0,0,0,2 } } }
extern const struct in6_addr in6addr_sitelocal_allrouters;
#define IN6ADDR_SITELOCAL_ALLROUTERS_INIT \
{ { { 0xff,5,0,0,0,0,0,0,0,0,0,0,0,0,0,2 } } }
#endif

15
net/ipv6/addrconf.c
View File

@ -244,6 +244,9 @@ const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;
const struct in6_addr in6addr_linklocal_allnodes = IN6ADDR_LINKLOCAL_ALLNODES_INIT;
const struct in6_addr in6addr_linklocal_allrouters = IN6ADDR_LINKLOCAL_ALLROUTERS_INIT;
const struct in6_addr in6addr_interfacelocal_allnodes = IN6ADDR_INTERFACELOCAL_ALLNODES_INIT;
const struct in6_addr in6addr_interfacelocal_allrouters = IN6ADDR_INTERFACELOCAL_ALLROUTERS_INIT;
const struct in6_addr in6addr_sitelocal_allrouters = IN6ADDR_SITELOCAL_ALLROUTERS_INIT;
/* Check if a valid qdisc is available */
static inline bool addrconf_qdisc_ok(const struct net_device *dev)
@ -428,6 +431,9 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
/* protected by rtnl_lock */
rcu_assign_pointer(dev->ip6_ptr, ndev);
/* Join interface-local all-node multicast group */
ipv6_dev_mc_inc(dev, &in6addr_interfacelocal_allnodes);
/* Join all-node multicast group */
ipv6_dev_mc_inc(dev, &in6addr_linklocal_allnodes);
@ -611,10 +617,15 @@ static void dev_forward_change(struct inet6_dev *idev)
if (idev->cnf.forwarding)
dev_disable_lro(dev);
if (dev->flags & IFF_MULTICAST) {
if (idev->cnf.forwarding)
if (idev->cnf.forwarding) {
ipv6_dev_mc_inc(dev, &in6addr_linklocal_allrouters);
else
ipv6_dev_mc_inc(dev, &in6addr_interfacelocal_allrouters);
ipv6_dev_mc_inc(dev, &in6addr_sitelocal_allrouters);
} else {
ipv6_dev_mc_dec(dev, &in6addr_linklocal_allrouters);
ipv6_dev_mc_dec(dev, &in6addr_interfacelocal_allrouters);
ipv6_dev_mc_dec(dev, &in6addr_sitelocal_allrouters);
}
}
list_for_each_entry(ifa, &idev->addr_list, if_list) {