From 6a6ddb2a9c11fcc3e8d7517841d28c9ea206ddef Mon Sep 17 00:00:00 2001 From: Sridhar Samudrala Date: Mon, 13 Jun 2005 15:13:05 -0700 Subject: [PATCH] [SCTP] Fix incorrect setting of sk_bound_dev_if when binding/sending to a ipv6 link local address. Signed-off-by: Sridhar Samudrala Signed-off-by: David S. Miller --- net/sctp/ipv6.c | 36 +++++++++++++++--------------------- 1 file changed, 15 insertions(+), 21 deletions(-) diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index c9d9ea0647..c7e42d125b 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; } -- 2.39.5