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authorSridhar Samudrala <sri@us.ibm.com>2005-06-13 18:13:05 -0400
committerDavid S. Miller <davem@davemloft.net>2005-06-13 18:13:05 -0400
commit6a6ddb2a9c11fcc3e8d7517841d28c9ea206ddef (patch)
tree9d974bc57b036ba997ba65903725e3e5b6eff5b8 /net
parentcdac4e07748934e37e415437055ed591aed9eb21 (diff)
[SCTP] Fix incorrect setting of sk_bound_dev_if when binding/sending to a ipv6
link local address. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/sctp/ipv6.c36
1 files changed, 15 insertions, 21 deletions
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index c9d9ea064734..c7e42d125b9c 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -812,26 +812,23 @@ static int sctp_inet6_bind_verify(struct sctp_sock *opt, union sctp_addr *addr)
812 if (addr->sa.sa_family != AF_INET6) 812 if (addr->sa.sa_family != AF_INET6)
813 af = sctp_get_af_specific(addr->sa.sa_family); 813 af = sctp_get_af_specific(addr->sa.sa_family);
814 else { 814 else {
815 struct sock *sk;
816 int type = ipv6_addr_type(&addr->v6.sin6_addr); 815 int type = ipv6_addr_type(&addr->v6.sin6_addr);
817 sk = sctp_opt2sk(opt); 816 struct net_device *dev;
817
818 if (type & IPV6_ADDR_LINKLOCAL) { 818 if (type & IPV6_ADDR_LINKLOCAL) {
819 /* Note: Behavior similar to af_inet6.c: 819 if (!addr->v6.sin6_scope_id)
820 * 1) Overrides previous bound_dev_if 820 return 0;
821 * 2) Destructive even if bind isn't successful. 821 dev = dev_get_by_index(addr->v6.sin6_scope_id);
822 */ 822 if (!dev)
823
824 if (addr->v6.sin6_scope_id)
825 sk->sk_bound_dev_if = addr->v6.sin6_scope_id;
826 if (!sk->sk_bound_dev_if)
827 return 0; 823 return 0;
824 dev_put(dev);
828 } 825 }
829 af = opt->pf->af; 826 af = opt->pf->af;
830 } 827 }
831 return af->available(addr, opt); 828 return af->available(addr, opt);
832} 829}
833 830
834/* Verify that the provided sockaddr looks bindable. Common verification, 831/* Verify that the provided sockaddr looks sendable. Common verification,
835 * has already been taken care of. 832 * has already been taken care of.
836 */ 833 */
837static int sctp_inet6_send_verify(struct sctp_sock *opt, union sctp_addr *addr) 834static int sctp_inet6_send_verify(struct sctp_sock *opt, union sctp_addr *addr)
@@ -842,19 +839,16 @@ static int sctp_inet6_send_verify(struct sctp_sock *opt, union sctp_addr *addr)
842 if (addr->sa.sa_family != AF_INET6) 839 if (addr->sa.sa_family != AF_INET6)
843 af = sctp_get_af_specific(addr->sa.sa_family); 840 af = sctp_get_af_specific(addr->sa.sa_family);
844 else { 841 else {
845 struct sock *sk;
846 int type = ipv6_addr_type(&addr->v6.sin6_addr); 842 int type = ipv6_addr_type(&addr->v6.sin6_addr);
847 sk = sctp_opt2sk(opt); 843 struct net_device *dev;
844
848 if (type & IPV6_ADDR_LINKLOCAL) { 845 if (type & IPV6_ADDR_LINKLOCAL) {
849 /* Note: Behavior similar to af_inet6.c: 846 if (!addr->v6.sin6_scope_id)
850 * 1) Overrides previous bound_dev_if 847 return 0;
851 * 2) Destructive even if bind isn't successful. 848 dev = dev_get_by_index(addr->v6.sin6_scope_id);
852 */ 849 if (!dev)
853
854 if (addr->v6.sin6_scope_id)
855 sk->sk_bound_dev_if = addr->v6.sin6_scope_id;
856 if (!sk->sk_bound_dev_if)
857 return 0; 850 return 0;
851 dev_put(dev);
858 } 852 }
859 af = opt->pf->af; 853 af = opt->pf->af;
860 } 854 }