diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/ipv6.c | 17 | ||||
| -rw-r--r-- | net/sctp/protocol.c | 12 | ||||
| -rw-r--r-- | net/sctp/transport.c | 23 |
3 files changed, 23 insertions, 29 deletions
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index a1913a4b6f3..500875f4dc4 100644 --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -247,17 +247,16 @@ static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *transport) /* Returns the dst cache entry for the given source and destination ip * addresses. */ -static struct dst_entry *sctp_v6_get_dst(struct sctp_association *asoc, - union sctp_addr *daddr, - union sctp_addr *saddr, - struct flowi *fl, - struct sock *sk) +static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr, + struct flowi *fl, struct sock *sk) { + struct sctp_association *asoc = t->asoc; struct dst_entry *dst = NULL; struct flowi6 *fl6 = &fl->u.ip6; struct sctp_bind_addr *bp; struct sctp_sockaddr_entry *laddr; union sctp_addr *baddr = NULL; + union sctp_addr *daddr = &t->ipaddr; union sctp_addr dst_saddr; __u8 matchlen = 0; __u8 bmatchlen; @@ -270,7 +269,6 @@ static struct dst_entry *sctp_v6_get_dst(struct sctp_association *asoc, if (ipv6_addr_type(&daddr->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL) fl6->flowi6_oif = daddr->v6.sin6_scope_id; - SCTP_DEBUG_PRINTK("%s: DST=%pI6 ", __func__, &fl6->daddr); if (asoc) @@ -343,12 +341,13 @@ out: if (!IS_ERR(dst)) { struct rt6_info *rt; rt = (struct rt6_info *)dst; + t->dst = dst; SCTP_DEBUG_PRINTK("rt6_dst:%pI6 rt6_src:%pI6\n", &rt->rt6i_dst.addr, &fl6->saddr); - return dst; + } else { + t->dst = NULL; + SCTP_DEBUG_PRINTK("NO ROUTE\n"); } - SCTP_DEBUG_PRINTK("NO ROUTE\n"); - return NULL; } /* Returns the number of consecutive initial bits that match in the 2 ipv6 diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 68b4c4317d6..9d3f15957d1 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -463,17 +463,16 @@ static sctp_scope_t sctp_v4_scope(union sctp_addr *addr) * addresses. If an association is passed, trys to get a dst entry with a * source address that matches an address in the bind address list. */ -static struct dst_entry *sctp_v4_get_dst(struct sctp_association *asoc, - union sctp_addr *daddr, - union sctp_addr *saddr, - struct flowi *fl, - struct sock *sk) +static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr, + struct flowi *fl, struct sock *sk) { + struct sctp_association *asoc = t->asoc; struct rtable *rt; struct flowi4 *fl4 = &fl->u.ip4; struct sctp_bind_addr *bp; struct sctp_sockaddr_entry *laddr; struct dst_entry *dst = NULL; + union sctp_addr *daddr = &t->ipaddr; union sctp_addr dst_saddr; memset(fl4, 0x0, sizeof(struct flowi4)); @@ -548,13 +547,12 @@ static struct dst_entry *sctp_v4_get_dst(struct sctp_association *asoc, out_unlock: rcu_read_unlock(); out: + t->dst = dst; if (dst) SCTP_DEBUG_PRINTK("rt_dst:%pI4, rt_src:%pI4\n", &rt->rt_dst, &rt->rt_src); else SCTP_DEBUG_PRINTK("NO ROUTE\n"); - - return dst; } /* For v4, the source address is cached in the route entry(dst). So no need diff --git a/net/sctp/transport.c b/net/sctp/transport.c index 1fbb920f8df..d8595dd1a8a 100644 --- a/net/sctp/transport.c +++ b/net/sctp/transport.c @@ -213,17 +213,17 @@ void sctp_transport_set_owner(struct sctp_transport *transport, /* Initialize the pmtu of a transport. */ void sctp_transport_pmtu(struct sctp_transport *transport, struct sock *sk) { - struct dst_entry *dst; struct flowi fl; - dst = transport->af_specific->get_dst(transport->asoc, - &transport->ipaddr, - &transport->saddr, + /* If we don't have a fresh route, look one up */ + if (!transport->dst || transport->dst->obsolete > 1) { + dst_release(transport->dst); + transport->af_specific->get_dst(transport, &transport->saddr, &fl, sk); + } - if (dst) { - transport->pathmtu = dst_mtu(dst); - dst_release(dst); + if (transport->dst) { + transport->pathmtu = dst_mtu(transport->dst); } else transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT; } @@ -274,12 +274,9 @@ void sctp_transport_route(struct sctp_transport *transport, { struct sctp_association *asoc = transport->asoc; struct sctp_af *af = transport->af_specific; - union sctp_addr *daddr = &transport->ipaddr; - struct dst_entry *dst; struct flowi fl; - dst = af->get_dst(asoc, daddr, saddr, &fl, sctp_opt2sk(opt)); - transport->dst = dst; + af->get_dst(transport, saddr, &fl, sctp_opt2sk(opt)); if (saddr) memcpy(&transport->saddr, saddr, sizeof(union sctp_addr)); @@ -289,8 +286,8 @@ void sctp_transport_route(struct sctp_transport *transport, if ((transport->param_flags & SPP_PMTUD_DISABLE) && transport->pathmtu) { return; } - if (dst) { - transport->pathmtu = dst_mtu(dst); + if (transport->dst) { + transport->pathmtu = dst_mtu(transport->dst); /* Initialize sk->sk_rcv_saddr, if the transport is the * association's active path for getsockname(). |