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net: iface: Print error if we cannot join mcast groups

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If we cannot join pre-defined allnodes or solicit node multicast
groups, then print error. Typically this will happen if the number
of multicast IPv6 address records is too small in net_if struct.

Change-Id: I12211cff90ef4edc856f1432cab0c37aae9a1bd5
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit is contained in:
Jukka Rissanen 2017-03-06 11:03:26 +02:00
commit aa95a93f38
1 changed files with 14 additions and 2 deletions
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16
subsys/net/ip/net_if.c
View file

@ -284,19 +284,31 @@ struct net_if *net_if_get_default(void)
static void join_mcast_allnodes(struct net_if *iface)
{
struct in6_addr addr;
int ret;
net_ipv6_addr_create_ll_allnodes_mcast(&addr);
net_ipv6_mld_join(iface, &addr);
ret = net_ipv6_mld_join(iface, &addr);
if (ret < 0) {
NET_ERR("Cannot join all nodes address %s (%d)",
net_sprint_ipv6_addr(&addr), ret);
}
}
static void join_mcast_solicit_node(struct net_if *iface,
struct in6_addr *my_addr)
{
struct in6_addr addr;
int ret;
/* Join to needed multicast groups, RFC 4291 ch 2.8 */
net_ipv6_addr_create_solicited_node(my_addr, &addr);
net_ipv6_mld_join(iface, &addr);
ret = net_ipv6_mld_join(iface, &addr);
if (ret < 0) {
NET_ERR("Cannot join solicit node address %s (%d)",
net_sprint_ipv6_addr(&addr), ret);
}
}
static void leave_mcast_all(struct net_if *iface)