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Diffstat (limited to 'net/ipv6/ipv6_sockglue.c')
-rw-r--r--net/ipv6/ipv6_sockglue.c34
1 files changed, 30 insertions, 4 deletions
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 2aa294be0c7..eeeaad2e8b5 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -395,6 +395,28 @@ sticky_done:
break;
}
+ case IPV6_PKTINFO:
+ {
+ struct in6_pktinfo pkt;
+
+ if (optlen == 0)
+ goto e_inval;
+ else if (optlen < sizeof(struct in6_pktinfo) || optval == NULL)
+ goto e_inval;
+
+ if (copy_from_user(&pkt, optval, optlen)) {
+ retv = -EFAULT;
+ break;
+ }
+ if (sk->sk_bound_dev_if && pkt.ipi6_ifindex != sk->sk_bound_dev_if)
+ goto e_inval;
+
+ np->sticky_pktinfo.ipi6_ifindex = pkt.ipi6_ifindex;
+ ipv6_addr_copy(&np->sticky_pktinfo.ipi6_addr, &pkt.ipi6_addr);
+ retv = 0;
+ break;
+ }
+
case IPV6_2292PKTOPTIONS:
{
struct ipv6_txoptions *opt = NULL;
@@ -916,8 +938,10 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
} else {
if (np->rxopt.bits.rxinfo) {
struct in6_pktinfo src_info;
- src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif : sk->sk_bound_dev_if;
- ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
+ src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif :
+ np->sticky_pktinfo.ipi6_ifindex;
+ np->mcast_oif? ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr) :
+ ipv6_addr_copy(&src_info.ipi6_addr, &(np->sticky_pktinfo.ipi6_addr));
put_cmsg(&msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxhlim) {
@@ -926,8 +950,10 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
}
if (np->rxopt.bits.rxoinfo) {
struct in6_pktinfo src_info;
- src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif : sk->sk_bound_dev_if;
- ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
+ src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif :
+ np->sticky_pktinfo.ipi6_ifindex;
+ np->mcast_oif? ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr) :
+ ipv6_addr_copy(&src_info.ipi6_addr, &(np->sticky_pktinfo.ipi6_addr));
put_cmsg(&msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxohlim) {