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[IPV6]: Check interface bindings on IPv6 raw socket reception

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Take account of whether a socket is bound to a particular device when
selecting an IPv6 raw socket to receive a packet. Also perform this
check when receiving IPv6 packets with router alert options.

Signed-off-by: Andrew McDonald <andrew@mcdonald.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew McDonald
2005-08-09 19:44:42 -07:00
committed by David S. Miller
parent 7af4cc3fa1
commit 0bd1b59b15
4 changed files with 15 additions and 6 deletions
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11
net/ipv6/raw.c
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@@ -81,7 +81,8 @@ static void raw_v6_unhash(struct sock *sk)
/* Grumble... icmp and ip_input want to get at this... */
struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num,
struct in6_addr *loc_addr, struct in6_addr *rmt_addr)
struct in6_addr *loc_addr, struct in6_addr *rmt_addr,
int dif)
{
struct hlist_node *node;
int is_multicast = ipv6_addr_is_multicast(loc_addr);
@@ -94,6 +95,9 @@ struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num,
!ipv6_addr_equal(&np->daddr, rmt_addr))
continue;
if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
continue;
if (!ipv6_addr_any(&np->rcv_saddr)) {
if (ipv6_addr_equal(&np->rcv_saddr, loc_addr))
goto found;
@@ -160,7 +164,7 @@ void ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
if (sk == NULL)
goto out;
sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr);
sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr, skb->dev->ifindex);
while (sk) {
if (nexthdr != IPPROTO_ICMPV6 || !icmpv6_filter(sk, skb)) {
@@ -170,7 +174,8 @@ void ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
if (clone)
rawv6_rcv(sk, clone);
}
sk = __raw_v6_lookup(sk_next(sk), nexthdr, daddr, saddr);
sk = __raw_v6_lookup(sk_next(sk), nexthdr, daddr, saddr,
skb->dev->ifindex);
}
out:
read_unlock(&raw_v6_lock);