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tipc: make sure required IPv6 addresses are scoped 

Make sure the user has provided a scope for multicast and link local
addresses used locally by a UDP bearer.

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Richard Alpe 2016-03-03 14:20:43 +01:00 committed by David S. Miller
parent ddb3712552
commit 34f65dbb6c
1 changed files with 5 additions and 0 deletions
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5
net/tipc/udp_media.c
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@ -310,9 +310,14 @@ static int parse_options(struct nlattr *attrs[], struct udp_bearer *ub,
#if IS_ENABLED(CONFIG_IPV6)
} else if ((sa_local.ss_family & sa_remote.ss_family) == AF_INET6) {
int atype;
struct sockaddr_in6 *ip6;
ip6 = (struct sockaddr_in6 *)&sa_local;
atype = ipv6_addr_type(&ip6->sin6_addr);
if (__ipv6_addr_needs_scope_id(atype) && !ip6->sin6_scope_id)
return -EINVAL;
local->proto = htons(ETH_P_IPV6);
local->udp_port = ip6->sin6_port;
memcpy(&local->ipv6, &ip6->sin6_addr, sizeof(struct in6_addr));