fedora core 6 1.2949 + vserver 2.2.0
[linux-2.6.git] / net / sctp / ipv6.c
index c068d53..ef36be0 100644 (file)
 
 #include <asm/uaccess.h>
 
-extern int sctp_inetaddr_event(struct notifier_block *, unsigned long, void *);
+/* Event handler for inet6 address addition/deletion events.  */
+static int sctp_inet6addr_event(struct notifier_block *this, unsigned long ev,
+                               void *ptr)
+{
+       struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
+       struct sctp_sockaddr_entry *addr;
+       struct list_head *pos, *temp;
+
+       switch (ev) {
+       case NETDEV_UP:
+               addr = kmalloc(sizeof(struct sctp_sockaddr_entry), GFP_ATOMIC);
+               if (addr) {
+                       addr->a.v6.sin6_family = AF_INET6;
+                       addr->a.v6.sin6_port = 0;
+                       memcpy(&addr->a.v6.sin6_addr, &ifa->addr,
+                                sizeof(struct in6_addr));
+                       addr->a.v6.sin6_scope_id = ifa->idev->dev->ifindex;
+                       list_add_tail(&addr->list, &sctp_local_addr_list);
+               }
+               break;
+       case NETDEV_DOWN:
+               list_for_each_safe(pos, temp, &sctp_local_addr_list) {
+                       addr = list_entry(pos, struct sctp_sockaddr_entry, list);
+                       if (ipv6_addr_equal(&addr->a.v6.sin6_addr, &ifa->addr)) {
+                               list_del(pos);
+                               kfree(addr);
+                               break;
+                       }
+               }
+
+               break;
+       }
+
+       return NOTIFY_DONE;
+}
+
 static struct notifier_block sctp_inet6addr_notifier = {
-       .notifier_call = sctp_inetaddr_event,
+       .notifier_call = sctp_inet6addr_event,
 };
 
 /* ICMP error handler. */
 SCTP_STATIC void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
-                            int type, int code, int offset, __u32 info)
+                            int type, int code, int offset, __be32 info)
 {
        struct inet6_dev *idev;
        struct ipv6hdr *iph = (struct ipv6hdr *)skb->data;
@@ -171,8 +206,6 @@ static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *transport,
                fl.oif = transport->saddr.v6.sin6_scope_id;
        else
                fl.oif = sk->sk_bound_dev_if;
-       fl.fl_ip_sport = inet_sk(sk)->sport;
-       fl.fl_ip_dport = transport->ipaddr.v6.sin6_port;
 
        if (np->opt && np->opt->srcrt) {
                struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
@@ -216,17 +249,17 @@ static struct dst_entry *sctp_v6_get_dst(struct sctp_association *asoc,
        }
 
        dst = ip6_route_output(NULL, &fl);
-       if (dst) {
+       if (!dst->error) {
                struct rt6_info *rt;
                rt = (struct rt6_info *)dst;
                SCTP_DEBUG_PRINTK(
                        "rt6_dst:" NIP6_FMT " rt6_src:" NIP6_FMT "\n",
                        NIP6(rt->rt6i_dst.addr), NIP6(rt->rt6i_src.addr));
-       } else {
-               SCTP_DEBUG_PRINTK("NO ROUTE\n");
+               return dst;
        }
-
-       return dst;
+       SCTP_DEBUG_PRINTK("NO ROUTE\n");
+       dst_release(dst);
+       return NULL;
 }
 
 /* Returns the number of consecutive initial bits that match in the 2 ipv6
@@ -240,7 +273,7 @@ static inline int sctp_v6_addr_match_len(union sctp_addr *s1,
        int i, j;
 
        for (i = 0; i < 4 ; i++) {
-               __u32 a1xora2;
+               __be32 a1xora2;
 
                a1xora2 = a1->s6_addr32[i] ^ a2->s6_addr32[i];
 
@@ -290,7 +323,8 @@ static void sctp_v6_get_saddr(struct sctp_association *asoc,
        sctp_read_lock(addr_lock);
        list_for_each(pos, &bp->address_list) {
                laddr = list_entry(pos, struct sctp_sockaddr_entry, list);
-               if ((laddr->a.sa.sa_family == AF_INET6) &&
+               if ((laddr->use_as_src) &&
+                   (laddr->a.sa.sa_family == AF_INET6) &&
                    (scope <= sctp_scope(&laddr->a))) {
                        bmatchlen = sctp_v6_addr_match_len(daddr, &laddr->a);
                        if (!baddr || (matchlen < bmatchlen)) {
@@ -321,9 +355,9 @@ static void sctp_v6_copy_addrlist(struct list_head *addrlist,
        struct inet6_ifaddr *ifp;
        struct sctp_sockaddr_entry *addr;
 
-       read_lock(&addrconf_lock);
+       rcu_read_lock();
        if ((in6_dev = __in6_dev_get(dev)) == NULL) {
-               read_unlock(&addrconf_lock);
+               rcu_read_unlock();
                return;
        }
 
@@ -342,7 +376,7 @@ static void sctp_v6_copy_addrlist(struct list_head *addrlist,
        }
 
        read_unlock(&in6_dev->lock);
-       read_unlock(&addrconf_lock);
+       rcu_read_unlock();
 }
 
 /* Initialize a sockaddr_storage from in incoming skb. */
@@ -350,7 +384,7 @@ static void sctp_v6_from_skb(union sctp_addr *addr,struct sk_buff *skb,
                             int is_saddr)
 {
        void *from;
-       __u16 *port;
+       __be16 *port;
        struct sctphdr *sh;
 
        port = &addr->v6.sin6_port;
@@ -360,10 +394,10 @@ static void sctp_v6_from_skb(union sctp_addr *addr,struct sk_buff *skb,
 
        sh = (struct sctphdr *) skb->h.raw;
        if (is_saddr) {
-               *port  = ntohs(sh->source);
+               *port  = sh->source;
                from = &skb->nh.ipv6h->saddr;
        } else {
-               *port = ntohs(sh->dest);
+               *port = sh->dest;
                from = &skb->nh.ipv6h->daddr;
        }
        ipv6_addr_copy(&addr->v6.sin6_addr, from);
@@ -373,7 +407,7 @@ static void sctp_v6_from_skb(union sctp_addr *addr,struct sk_buff *skb,
 static void sctp_v6_from_sk(union sctp_addr *addr, struct sock *sk)
 {
        addr->v6.sin6_family = AF_INET6;
-       addr->v6.sin6_port = inet_sk(sk)->num;
+       addr->v6.sin6_port = 0;
        addr->v6.sin6_addr = inet6_sk(sk)->rcv_saddr;
 }
 
@@ -407,7 +441,7 @@ static void sctp_v6_to_sk_daddr(union sctp_addr *addr, struct sock *sk)
 /* Initialize a sctp_addr from an address parameter. */
 static void sctp_v6_from_addr_param(union sctp_addr *addr,
                                    union sctp_addr_param *param,
-                                   __u16 port, int iif)
+                                   __be16 port, int iif)
 {
        addr->v6.sin6_family = AF_INET6;
        addr->v6.sin6_port = port;
@@ -425,7 +459,7 @@ static int sctp_v6_to_addr_param(const union sctp_addr *addr,
        int length = sizeof(sctp_ipv6addr_param_t);
 
        param->v6.param_hdr.type = SCTP_PARAM_IPV6_ADDRESS;
-       param->v6.param_hdr.length = ntohs(length);
+       param->v6.param_hdr.length = htons(length);
        ipv6_addr_copy(&param->v6.addr, &addr->v6.sin6_addr);
 
        return length;
@@ -433,7 +467,7 @@ static int sctp_v6_to_addr_param(const union sctp_addr *addr,
 
 /* Initialize a sctp_addr from a dst_entry. */
 static void sctp_v6_dst_saddr(union sctp_addr *addr, struct dst_entry *dst,
-                             unsigned short port)
+                             __be16 port)
 {
        struct rt6_info *rt = (struct rt6_info *)dst;
        addr->sa.sa_family = AF_INET6;
@@ -480,7 +514,7 @@ static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
 }
 
 /* Initialize addr struct to INADDR_ANY. */
-static void sctp_v6_inaddr_any(union sctp_addr *addr, unsigned short port)
+static void sctp_v6_inaddr_any(union sctp_addr *addr, __be16 port)
 {
        memset(addr, 0x00, sizeof(union sctp_addr));
        addr->v6.sin6_family = AF_INET6;
@@ -855,7 +889,7 @@ static int sctp_inet6_send_verify(struct sctp_sock *opt, union sctp_addr *addr)
  * Returns number of addresses supported.
  */
 static int sctp_inet6_supported_addrs(const struct sctp_sock *opt,
-                                     __u16 *types)
+                                     __be16 *types)
 {
        types[0] = SCTP_PARAM_IPV4_ADDRESS;
        types[1] = SCTP_PARAM_IPV6_ADDRESS;
@@ -863,23 +897,27 @@ static int sctp_inet6_supported_addrs(const struct sctp_sock *opt,
 }
 
 static const struct proto_ops inet6_seqpacket_ops = {
-       .family     = PF_INET6,
-       .owner      = THIS_MODULE,
-       .release    = inet6_release,
-       .bind       = inet6_bind,
-       .connect    = inet_dgram_connect,
-       .socketpair = sock_no_socketpair,
-       .accept     = inet_accept,
-       .getname    = inet6_getname,
-       .poll       = sctp_poll,
-       .ioctl      = inet6_ioctl,
-       .listen     = sctp_inet_listen,
-       .shutdown   = inet_shutdown,
-       .setsockopt = sock_common_setsockopt,
-       .getsockopt = sock_common_getsockopt,
-       .sendmsg    = inet_sendmsg,
-       .recvmsg    = sock_common_recvmsg,
-       .mmap       = sock_no_mmap,
+       .family            = PF_INET6,
+       .owner             = THIS_MODULE,
+       .release           = inet6_release,
+       .bind              = inet6_bind,
+       .connect           = inet_dgram_connect,
+       .socketpair        = sock_no_socketpair,
+       .accept            = inet_accept,
+       .getname           = inet6_getname,
+       .poll              = sctp_poll,
+       .ioctl             = inet6_ioctl,
+       .listen            = sctp_inet_listen,
+       .shutdown          = inet_shutdown,
+       .setsockopt        = sock_common_setsockopt,
+       .getsockopt        = sock_common_getsockopt,
+       .sendmsg           = inet_sendmsg,
+       .recvmsg           = sock_common_recvmsg,
+       .mmap              = sock_no_mmap,
+#ifdef CONFIG_COMPAT
+       .compat_setsockopt = compat_sock_common_setsockopt,
+       .compat_getsockopt = compat_sock_common_getsockopt,
+#endif
 };
 
 static struct inet_protosw sctpv6_seqpacket_protosw = {
@@ -913,31 +951,35 @@ static struct inet6_protocol sctpv6_protocol = {
 };
 
 static struct sctp_af sctp_ipv6_specific = {
-       .sctp_xmit       = sctp_v6_xmit,
-       .setsockopt      = ipv6_setsockopt,
-       .getsockopt      = ipv6_getsockopt,
-       .get_dst         = sctp_v6_get_dst,
-       .get_saddr       = sctp_v6_get_saddr,
-       .copy_addrlist   = sctp_v6_copy_addrlist,
-       .from_skb        = sctp_v6_from_skb,
-       .from_sk         = sctp_v6_from_sk,
-       .to_sk_saddr     = sctp_v6_to_sk_saddr,
-       .to_sk_daddr     = sctp_v6_to_sk_daddr,
-       .from_addr_param = sctp_v6_from_addr_param,
-       .to_addr_param   = sctp_v6_to_addr_param,
-       .dst_saddr       = sctp_v6_dst_saddr,
-       .cmp_addr        = sctp_v6_cmp_addr,
-       .scope           = sctp_v6_scope,
-       .addr_valid      = sctp_v6_addr_valid,
-       .inaddr_any      = sctp_v6_inaddr_any,
-       .is_any          = sctp_v6_is_any,
-       .available       = sctp_v6_available,
-       .skb_iif         = sctp_v6_skb_iif,
-       .is_ce           = sctp_v6_is_ce,
-       .seq_dump_addr   = sctp_v6_seq_dump_addr,
-       .net_header_len  = sizeof(struct ipv6hdr),
-       .sockaddr_len    = sizeof(struct sockaddr_in6),
-       .sa_family       = AF_INET6,
+       .sa_family         = AF_INET6,
+       .sctp_xmit         = sctp_v6_xmit,
+       .setsockopt        = ipv6_setsockopt,
+       .getsockopt        = ipv6_getsockopt,
+       .get_dst           = sctp_v6_get_dst,
+       .get_saddr         = sctp_v6_get_saddr,
+       .copy_addrlist     = sctp_v6_copy_addrlist,
+       .from_skb          = sctp_v6_from_skb,
+       .from_sk           = sctp_v6_from_sk,
+       .to_sk_saddr       = sctp_v6_to_sk_saddr,
+       .to_sk_daddr       = sctp_v6_to_sk_daddr,
+       .from_addr_param   = sctp_v6_from_addr_param,
+       .to_addr_param     = sctp_v6_to_addr_param,
+       .dst_saddr         = sctp_v6_dst_saddr,
+       .cmp_addr          = sctp_v6_cmp_addr,
+       .scope             = sctp_v6_scope,
+       .addr_valid        = sctp_v6_addr_valid,
+       .inaddr_any        = sctp_v6_inaddr_any,
+       .is_any            = sctp_v6_is_any,
+       .available         = sctp_v6_available,
+       .skb_iif           = sctp_v6_skb_iif,
+       .is_ce             = sctp_v6_is_ce,
+       .seq_dump_addr     = sctp_v6_seq_dump_addr,
+       .net_header_len    = sizeof(struct ipv6hdr),
+       .sockaddr_len      = sizeof(struct sockaddr_in6),
+#ifdef CONFIG_COMPAT
+       .compat_setsockopt = compat_ipv6_setsockopt,
+       .compat_getsockopt = compat_ipv6_getsockopt,
+#endif
 };
 
 static struct sctp_pf sctp_pf_inet6_specific = {