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| author | Sridhar Samudrala <sri@us.ibm.com> | 2005-06-13 15:13:05 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-06-13 15:13:05 -0700 |
| commit | 6a6ddb2a9c11fcc3e8d7517841d28c9ea206ddef (patch) | |
| tree | 9d974bc57b036ba997ba65903725e3e5b6eff5b8 /net | |
| parent | cdac4e07748934e37e415437055ed591aed9eb21 (diff) | |
| download | lwn-6a6ddb2a9c11fcc3e8d7517841d28c9ea206ddef.tar.gz lwn-6a6ddb2a9c11fcc3e8d7517841d28c9ea206ddef.zip | |
[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.c | 36 |
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) if (addr->sa.sa_family != AF_INET6) af = sctp_get_af_specific(addr->sa.sa_family); else { - struct sock *sk; int type = ipv6_addr_type(&addr->v6.sin6_addr); - sk = sctp_opt2sk(opt); + struct net_device *dev; + if (type & IPV6_ADDR_LINKLOCAL) { - /* Note: Behavior similar to af_inet6.c: - * 1) Overrides previous bound_dev_if - * 2) Destructive even if bind isn't successful. - */ - - if (addr->v6.sin6_scope_id) - sk->sk_bound_dev_if = addr->v6.sin6_scope_id; - if (!sk->sk_bound_dev_if) + if (!addr->v6.sin6_scope_id) + return 0; + dev = dev_get_by_index(addr->v6.sin6_scope_id); + if (!dev) return 0; + dev_put(dev); } af = opt->pf->af; } return af->available(addr, opt); } -/* Verify that the provided sockaddr looks bindable. Common verification, +/* Verify that the provided sockaddr looks sendable. Common verification, * has already been taken care of. */ static 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) if (addr->sa.sa_family != AF_INET6) af = sctp_get_af_specific(addr->sa.sa_family); else { - struct sock *sk; int type = ipv6_addr_type(&addr->v6.sin6_addr); - sk = sctp_opt2sk(opt); + struct net_device *dev; + if (type & IPV6_ADDR_LINKLOCAL) { - /* Note: Behavior similar to af_inet6.c: - * 1) Overrides previous bound_dev_if - * 2) Destructive even if bind isn't successful. - */ - - if (addr->v6.sin6_scope_id) - sk->sk_bound_dev_if = addr->v6.sin6_scope_id; - if (!sk->sk_bound_dev_if) + if (!addr->v6.sin6_scope_id) + return 0; + dev = dev_get_by_index(addr->v6.sin6_scope_id); + if (!dev) return 0; + dev_put(dev); } af = opt->pf->af; } |