Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff
[linux-2.6.git] / net / sctp / protocol.c
index 5135e1a..816c033 100644 (file)
@@ -54,6 +54,7 @@
 #include <net/protocol.h>
 #include <net/ip.h>
 #include <net/ipv6.h>
+#include <net/route.h>
 #include <net/sctp/sctp.h>
 #include <net/addrconf.h>
 #include <net/inet_common.h>
@@ -62,7 +63,7 @@
 /* Global data structures. */
 struct sctp_globals sctp_globals;
 struct proc_dir_entry  *proc_net_sctp;
-DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics);
+DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics) __read_mostly;
 
 struct idr sctp_assocs_id;
 DEFINE_SPINLOCK(sctp_assocs_id_lock);
@@ -78,8 +79,8 @@ static struct sctp_pf *sctp_pf_inet_specific;
 static struct sctp_af *sctp_af_v4_specific;
 static struct sctp_af *sctp_af_v6_specific;
 
-kmem_cache_t *sctp_chunk_cachep;
-kmem_cache_t *sctp_bucket_cachep;
+kmem_cache_t *sctp_chunk_cachep __read_mostly;
+kmem_cache_t *sctp_bucket_cachep __read_mostly;
 
 extern int sctp_snmp_proc_init(void);
 extern int sctp_snmp_proc_exit(void);
@@ -147,7 +148,7 @@ static void sctp_v4_copy_addrlist(struct list_head *addrlist,
        struct sctp_sockaddr_entry *addr;
 
        rcu_read_lock();
-       if ((in_dev = __in_dev_get(dev)) == NULL) {
+       if ((in_dev = __in_dev_get_rcu(dev)) == NULL) {
                rcu_read_unlock();
                return;
        }
@@ -219,7 +220,7 @@ static void sctp_free_local_addr_list(void)
 
 /* Copy the local addresses which are valid for 'scope' into 'bp'.  */
 int sctp_copy_local_addr_list(struct sctp_bind_addr *bp, sctp_scope_t scope,
-                             int gfp, int copy_flags)
+                             gfp_t gfp, int copy_flags)
 {
        struct sctp_sockaddr_entry *addr;
        int error = 0;
@@ -364,12 +365,18 @@ static int sctp_v4_is_any(const union sctp_addr *addr)
  * Return 0 - If the address is a non-unicast or an illegal address.
  * Return 1 - If the address is a unicast.
  */
-static int sctp_v4_addr_valid(union sctp_addr *addr, struct sctp_sock *sp)
+static int sctp_v4_addr_valid(union sctp_addr *addr,
+                             struct sctp_sock *sp,
+                             const struct sk_buff *skb)
 {
        /* Is this a non-unicast address or a unusable SCTP address? */
        if (IS_IPV4_UNUSABLE_ADDRESS(&addr->v4.sin_addr.s_addr))
                return 0;
 
+       /* Is this a broadcast address? */
+       if (skb && ((struct rtable *)skb->dst)->rt_flags & RTCF_BROADCAST)
+               return 0;
+
        return 1;
 }
 
@@ -530,6 +537,9 @@ static void sctp_v4_get_saddr(struct sctp_association *asoc,
 {
        struct rtable *rt = (struct rtable *)dst;
 
+       if (!asoc)
+               return;
+
        if (rt) {
                saddr->v4.sin_family = AF_INET;
                saddr->v4.sin_port = asoc->base.bind_addr.port;  
@@ -593,9 +603,7 @@ static struct sock *sctp_v4_create_accept_sk(struct sock *sk,
        newinet->mc_index = 0;
        newinet->mc_list = NULL;
 
-#ifdef INET_REFCNT_DEBUG
-       atomic_inc(&inet_sock_nr);
-#endif
+       sk_refcnt_debug_inc(newsk);
 
        if (newsk->sk_prot->init(newsk)) {
                sk_common_release(newsk);
@@ -828,25 +836,29 @@ static struct notifier_block sctp_inetaddr_notifier = {
 };
 
 /* Socket operations.  */
-static struct proto_ops inet_seqpacket_ops = {
-       .family      = PF_INET,
-       .owner       = THIS_MODULE,
-       .release     = inet_release,       /* Needs to be wrapped... */
-       .bind        = inet_bind,
-       .connect     = inet_dgram_connect,
-       .socketpair  = sock_no_socketpair,
-       .accept      = inet_accept,
-       .getname     = inet_getname,      /* Semantics are different.  */
-       .poll        = sctp_poll,
-       .ioctl       = inet_ioctl,
-       .listen      = sctp_inet_listen,
-       .shutdown    = inet_shutdown,     /* Looks harmless.  */
-       .setsockopt  = sock_common_setsockopt,   /* IP_SOL IP_OPTION is a problem. */
-       .getsockopt  = sock_common_getsockopt,
-       .sendmsg     = inet_sendmsg,
-       .recvmsg     = sock_common_recvmsg,
-       .mmap        = sock_no_mmap,
-       .sendpage    = sock_no_sendpage,
+static const struct proto_ops inet_seqpacket_ops = {
+       .family            = PF_INET,
+       .owner             = THIS_MODULE,
+       .release           = inet_release,      /* Needs to be wrapped... */
+       .bind              = inet_bind,
+       .connect           = inet_dgram_connect,
+       .socketpair        = sock_no_socketpair,
+       .accept            = inet_accept,
+       .getname           = inet_getname,      /* Semantics are different.  */
+       .poll              = sctp_poll,
+       .ioctl             = inet_ioctl,
+       .listen            = sctp_inet_listen,
+       .shutdown          = inet_shutdown,     /* Looks harmless.  */
+       .setsockopt        = sock_common_setsockopt, /* IP_SOL IP_OPTION is a problem */
+       .getsockopt        = sock_common_getsockopt,
+       .sendmsg           = inet_sendmsg,
+       .recvmsg           = sock_common_recvmsg,
+       .mmap              = sock_no_mmap,
+       .sendpage          = sock_no_sendpage,
+#ifdef CONFIG_COMPAT
+       .compat_setsockopt = compat_sock_common_setsockopt,
+       .compat_getsockopt = compat_sock_common_getsockopt,
+#endif
 };
 
 /* Registration with AF_INET family.  */
@@ -878,31 +890,35 @@ static struct net_protocol sctp_protocol = {
 
 /* IPv4 address related functions.  */
 static struct sctp_af sctp_ipv4_specific = {
-       .sctp_xmit      = sctp_v4_xmit,
-       .setsockopt     = ip_setsockopt,
-       .getsockopt     = ip_getsockopt,
-       .get_dst        = sctp_v4_get_dst,
-       .get_saddr      = sctp_v4_get_saddr,
-       .copy_addrlist  = sctp_v4_copy_addrlist,
-       .from_skb       = sctp_v4_from_skb,
-       .from_sk        = sctp_v4_from_sk,
-       .to_sk_saddr    = sctp_v4_to_sk_saddr,
-       .to_sk_daddr    = sctp_v4_to_sk_daddr,
-       .from_addr_param= sctp_v4_from_addr_param,
-       .to_addr_param  = sctp_v4_to_addr_param,        
-       .dst_saddr      = sctp_v4_dst_saddr,
-       .cmp_addr       = sctp_v4_cmp_addr,
-       .addr_valid     = sctp_v4_addr_valid,
-       .inaddr_any     = sctp_v4_inaddr_any,
-       .is_any         = sctp_v4_is_any,
-       .available      = sctp_v4_available,
-       .scope          = sctp_v4_scope,
-       .skb_iif        = sctp_v4_skb_iif,
-       .is_ce          = sctp_v4_is_ce,
-       .seq_dump_addr  = sctp_v4_seq_dump_addr,
-       .net_header_len = sizeof(struct iphdr),
-       .sockaddr_len   = sizeof(struct sockaddr_in),
-       .sa_family      = AF_INET,
+       .sa_family         = AF_INET,
+       .sctp_xmit         = sctp_v4_xmit,
+       .setsockopt        = ip_setsockopt,
+       .getsockopt        = ip_getsockopt,
+       .get_dst           = sctp_v4_get_dst,
+       .get_saddr         = sctp_v4_get_saddr,
+       .copy_addrlist     = sctp_v4_copy_addrlist,
+       .from_skb          = sctp_v4_from_skb,
+       .from_sk           = sctp_v4_from_sk,
+       .to_sk_saddr       = sctp_v4_to_sk_saddr,
+       .to_sk_daddr       = sctp_v4_to_sk_daddr,
+       .from_addr_param   = sctp_v4_from_addr_param,
+       .to_addr_param     = sctp_v4_to_addr_param,
+       .dst_saddr         = sctp_v4_dst_saddr,
+       .cmp_addr          = sctp_v4_cmp_addr,
+       .addr_valid        = sctp_v4_addr_valid,
+       .inaddr_any        = sctp_v4_inaddr_any,
+       .is_any            = sctp_v4_is_any,
+       .available         = sctp_v4_available,
+       .scope             = sctp_v4_scope,
+       .skb_iif           = sctp_v4_skb_iif,
+       .is_ce             = sctp_v4_is_ce,
+       .seq_dump_addr     = sctp_v4_seq_dump_addr,
+       .net_header_len    = sizeof(struct iphdr),
+       .sockaddr_len      = sizeof(struct sockaddr_in),
+#ifdef CONFIG_COMPAT
+       .compat_setsockopt = compat_ip_setsockopt,
+       .compat_getsockopt = compat_ip_getsockopt,
+#endif
 };
 
 struct sctp_pf *sctp_get_pf_specific(sa_family_t family) {
@@ -1049,8 +1065,14 @@ SCTP_STATIC __init int sctp_init(void)
        /* Sendbuffer growth        - do per-socket accounting */
        sctp_sndbuf_policy              = 0;
 
+       /* Rcvbuffer growth         - do per-socket accounting */
+       sctp_rcvbuf_policy              = 0;
+
        /* HB.interval              - 30 seconds */
-       sctp_hb_interval                = 30 * HZ;
+       sctp_hb_interval                = SCTP_DEFAULT_TIMEOUT_HEARTBEAT;
+
+       /* delayed SACK timeout */
+       sctp_sack_timeout               = SCTP_DEFAULT_TIMEOUT_SACK;
 
        /* Implementation specific variables. */
 
@@ -1241,6 +1263,10 @@ SCTP_STATIC __exit void sctp_exit(void)
 module_init(sctp_init);
 module_exit(sctp_exit);
 
+/*
+ * __stringify doesn't likes enums, so use IPPROTO_SCTP value (132) directly.
+ */
+MODULE_ALIAS("net-pf-" __stringify(PF_INET) "-proto-132");
 MODULE_AUTHOR("Linux Kernel SCTP developers <lksctp-developers@lists.sourceforge.net>");
 MODULE_DESCRIPTION("Support for the SCTP protocol (RFC2960)");
 MODULE_LICENSE("GPL");