#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>
/* 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;
-spinlock_t sctp_assocs_id_lock = SPIN_LOCK_UNLOCKED;
+DEFINE_SPINLOCK(sctp_assocs_id_lock);
/* This is the global socket data structure used for responding to
* the Out-of-the-blue (OOTB) packets. A control sock will be created
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;
-
-extern struct net_proto_family inet_family_ops;
+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);
}
/* Set up the proc fs entry for the SCTP protocol. */
-__init int sctp_proc_init(void)
+static __init int sctp_proc_init(void)
{
if (!proc_net_sctp) {
struct proc_dir_entry *ent;
- ent = proc_mkdir("net/sctp", 0);
+ ent = proc_mkdir("net/sctp", NULL);
if (ent) {
ent->owner = THIS_MODULE;
proc_net_sctp = ent;
* Note: Do not make this __exit as it is used in the init error
* path.
*/
-void sctp_proc_exit(void)
+static void sctp_proc_exit(void)
{
sctp_snmp_proc_exit();
sctp_eps_proc_exit();
if (proc_net_sctp) {
proc_net_sctp = NULL;
- remove_proc_entry("net/sctp", 0);
+ remove_proc_entry("net/sctp", NULL);
}
}
struct in_ifaddr *ifa;
struct sctp_sockaddr_entry *addr;
- read_lock(&inetdev_lock);
- if ((in_dev = __in_dev_get(dev)) == NULL) {
- read_unlock(&inetdev_lock);
+ rcu_read_lock();
+ if ((in_dev = __in_dev_get_rcu(dev)) == NULL) {
+ rcu_read_unlock();
return;
}
- read_lock(&in_dev->lock);
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
/* Add the address to the local list. */
addr = t_new(struct sctp_sockaddr_entry, GFP_ATOMIC);
}
}
- read_unlock(&in_dev->lock);
- read_unlock(&inetdev_lock);
+ rcu_read_unlock();
}
/* Extract our IP addresses from the system and stash them in the
/* 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;
* 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_opt *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;
}
/* Should this be available for binding? */
-static int sctp_v4_available(union sctp_addr *addr, struct sctp_opt *sp)
+static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp)
{
int ret = inet_addr_type(addr->v4.sin_addr.s_addr);
- /* FIXME: ip_nonlocal_bind sysctl support. */
- if (addr->v4.sin_addr.s_addr != INADDR_ANY && ret != RTN_LOCAL)
+ if (addr->v4.sin_addr.s_addr != INADDR_ANY &&
+ ret != RTN_LOCAL &&
+ !sp->inet.freebind &&
+ !sysctl_ip_nonlocal_bind)
return 0;
+
return 1;
}
* 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.
*/
-struct dst_entry *sctp_v4_get_dst(struct sctp_association *asoc,
- union sctp_addr *daddr,
- union sctp_addr *saddr)
+static struct dst_entry *sctp_v4_get_dst(struct sctp_association *asoc,
+ union sctp_addr *daddr,
+ union sctp_addr *saddr)
{
struct rtable *rt;
struct flowi fl;
/* For v4, the source address is cached in the route entry(dst). So no need
* to cache it separately and hence this is an empty routine.
*/
-void sctp_v4_get_saddr(struct sctp_association *asoc,
- struct dst_entry *dst,
- union sctp_addr *daddr,
- union sctp_addr *saddr)
+static void sctp_v4_get_saddr(struct sctp_association *asoc,
+ struct dst_entry *dst,
+ union sctp_addr *daddr,
+ union sctp_addr *saddr)
{
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;
}
/* Create and initialize a new sk for the socket returned by accept(). */
-struct sock *sctp_v4_create_accept_sk(struct sock *sk,
- struct sctp_association *asoc)
+static struct sock *sctp_v4_create_accept_sk(struct sock *sk,
+ struct sctp_association *asoc)
{
- struct sock *newsk;
- struct inet_opt *inet = inet_sk(sk);
- struct inet_opt *newinet;
+ struct inet_sock *inet = inet_sk(sk);
+ struct inet_sock *newinet;
+ struct sock *newsk = sk_alloc(PF_INET, GFP_KERNEL, sk->sk_prot, 1);
- newsk = sk_alloc(PF_INET, GFP_KERNEL, sizeof(struct sctp_sock),
- sk->sk_slab);
if (!newsk)
goto out;
sock_init_data(NULL, newsk);
- sk_set_owner(newsk, THIS_MODULE);
newsk->sk_type = SOCK_STREAM;
- newsk->sk_prot = sk->sk_prot;
newsk->sk_no_check = sk->sk_no_check;
newsk->sk_reuse = sk->sk_reuse;
newsk->sk_shutdown = sk->sk_shutdown;
newsk->sk_destruct = inet_sock_destruct;
- newsk->sk_zapped = 0;
newsk->sk_family = PF_INET;
newsk->sk_protocol = IPPROTO_SCTP;
newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
+ sock_reset_flag(newsk, SOCK_ZAPPED);
newinet = inet_sk(newsk);
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)) {
- inet_sock_release(newsk);
+ sk_common_release(newsk);
newsk = NULL;
}
}
/* Map address, empty for v4 family */
-static void sctp_v4_addr_v4map(struct sctp_opt *sp, union sctp_addr *addr)
+static void sctp_v4_addr_v4map(struct sctp_sock *sp, union sctp_addr *addr)
{
/* Empty */
}
/* Event handler for inet address addition/deletion events.
* Basically, whenever there is an event, we re-build our local address list.
*/
-static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
- void *ptr)
+int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
+ void *ptr)
{
unsigned long flags;
* Initialize the control inode/socket with a control endpoint data
* structure. This endpoint is reserved exclusively for the OOTB processing.
*/
-int sctp_ctl_sock_init(void)
+static int sctp_ctl_sock_init(void)
{
int err;
sa_family_t family;
}
/* Do we support this AF? */
-static int sctp_inet_af_supported(sa_family_t family, struct sctp_opt *sp)
+static int sctp_inet_af_supported(sa_family_t family, struct sctp_sock *sp)
{
/* PF_INET only supports AF_INET addresses. */
return (AF_INET == family);
/* Address matching with wildcards allowed. */
static int sctp_inet_cmp_addr(const union sctp_addr *addr1,
const union sctp_addr *addr2,
- struct sctp_opt *opt)
+ struct sctp_sock *opt)
{
/* PF_INET only supports AF_INET addresses. */
if (addr1->sa.sa_family != addr2->sa.sa_family)
/* Verify that provided sockaddr looks bindable. Common verification has
* already been taken care of.
*/
-static int sctp_inet_bind_verify(struct sctp_opt *opt, union sctp_addr *addr)
+static int sctp_inet_bind_verify(struct sctp_sock *opt, union sctp_addr *addr)
{
return sctp_v4_available(addr, opt);
}
/* Verify that sockaddr looks sendable. Common verification has already
* been taken care of.
*/
-static int sctp_inet_send_verify(struct sctp_opt *opt, union sctp_addr *addr)
+static int sctp_inet_send_verify(struct sctp_sock *opt, union sctp_addr *addr)
{
return 1;
}
/* Fill in Supported Address Type information for INIT and INIT-ACK
* chunks. Returns number of addresses supported.
*/
-static int sctp_inet_supported_addrs(const struct sctp_opt *opt,
+static int sctp_inet_supported_addrs(const struct sctp_sock *opt,
__u16 *types)
{
types[0] = SCTP_PARAM_IPV4_ADDRESS;
NIPQUAD(((struct rtable *)skb->dst)->rt_src),
NIPQUAD(((struct rtable *)skb->dst)->rt_dst));
- SCTP_INC_STATS(SctpOutSCTPPacks);
+ SCTP_INC_STATS(SCTP_MIB_OUTSCTPPACKS);
return ip_queue_xmit(skb, ipfragok);
}
-struct sctp_af sctp_ipv4_specific;
+static struct sctp_af sctp_ipv4_specific;
static struct sctp_pf sctp_pf_inet = {
.event_msgname = sctp_inet_event_msgname,
};
/* Notifier for inetaddr addition/deletion events. */
-struct notifier_block sctp_inetaddr_notifier = {
+static struct notifier_block sctp_inetaddr_notifier = {
.notifier_call = sctp_inetaddr_event,
};
/* Socket operations. */
-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 = inet_setsockopt, /* IP_SOL IP_OPTION is a problem. */
- .getsockopt = inet_getsockopt,
- .sendmsg = inet_sendmsg,
- .recvmsg = inet_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. */
};
/* Register with IP layer. */
-static struct inet_protocol sctp_protocol = {
+static struct net_protocol sctp_protocol = {
.handler = sctp_rcv,
.err_handler = sctp_v4_err,
.no_policy = 1,
};
/* IPv4 address related functions. */
-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,
+static struct sctp_af sctp_ipv4_specific = {
+ .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) {
}
/* Initialize the universe into something sensible. */
-__init int sctp_init(void)
+SCTP_STATIC __init int sctp_init(void)
{
int i;
- int status = 0;
+ int status = -EINVAL;
unsigned long goal;
int order;
/* SCTP_DEBUG sanity check. */
if (!sctp_sanity_check())
- return -EINVAL;
+ goto out;
+
+ status = proto_register(&sctp_prot, 1);
+ if (status)
+ goto out;
/* Add SCTP to inet_protos hash table. */
+ status = -EAGAIN;
if (inet_add_protocol(&sctp_protocol, IPPROTO_SCTP) < 0)
- return -EAGAIN;
+ goto err_add_protocol;
/* Add SCTP(TCP and UDP style) to inetsw linked list. */
inet_register_protosw(&sctp_seqpacket_protosw);
inet_register_protosw(&sctp_stream_protosw);
/* Allocate a cache pools. */
+ status = -ENOBUFS;
sctp_bucket_cachep = kmem_cache_create("sctp_bind_bucket",
sizeof(struct sctp_bind_bucket),
0, SLAB_HWCACHE_ALIGN,
sctp_max_retrans_path = 5;
sctp_max_retrans_init = 8;
+ /* 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. */
goto err_ahash_alloc;
}
for (i = 0; i < sctp_assoc_hashsize; i++) {
- sctp_assoc_hashtable[i].lock = RW_LOCK_UNLOCKED;
+ rwlock_init(&sctp_assoc_hashtable[i].lock);
sctp_assoc_hashtable[i].chain = NULL;
}
goto err_ehash_alloc;
}
for (i = 0; i < sctp_ep_hashsize; i++) {
- sctp_ep_hashtable[i].lock = RW_LOCK_UNLOCKED;
+ rwlock_init(&sctp_ep_hashtable[i].lock);
sctp_ep_hashtable[i].chain = NULL;
}
goto err_bhash_alloc;
}
for (i = 0; i < sctp_port_hashsize; i++) {
- sctp_port_hashtable[i].lock = SPIN_LOCK_UNLOCKED;
+ spin_lock_init(&sctp_port_hashtable[i].lock);
sctp_port_hashtable[i].chain = NULL;
}
- sctp_port_alloc_lock = SPIN_LOCK_UNLOCKED;
+ spin_lock_init(&sctp_port_alloc_lock);
sctp_port_rover = sysctl_local_port_range[0] - 1;
printk(KERN_INFO "SCTP: Hash tables configured "
/* Initialize the local address list. */
INIT_LIST_HEAD(&sctp_local_addr_list);
- sctp_local_addr_lock = SPIN_LOCK_UNLOCKED;
+ spin_lock_init(&sctp_local_addr_lock);
/* Register notifier for inet address additions/deletions. */
register_inetaddr_notifier(&sctp_inetaddr_notifier);
sctp_get_local_addr_list();
__unsafe(THIS_MODULE);
- return 0;
-
+ status = 0;
+out:
+ return status;
err_ctl_sock_init:
sctp_v6_exit();
err_v6_init:
inet_del_protocol(&sctp_protocol, IPPROTO_SCTP);
inet_unregister_protosw(&sctp_seqpacket_protosw);
inet_unregister_protosw(&sctp_stream_protosw);
- return status;
+err_add_protocol:
+ proto_unregister(&sctp_prot);
+ goto out;
}
/* Exit handler for the SCTP protocol. */
-__exit void sctp_exit(void)
+SCTP_STATIC __exit void sctp_exit(void)
{
/* BUG. This should probably do something useful like clean
* up all the remaining associations and all that memory.
inet_del_protocol(&sctp_protocol, IPPROTO_SCTP);
inet_unregister_protosw(&sctp_seqpacket_protosw);
inet_unregister_protosw(&sctp_stream_protosw);
+ proto_unregister(&sctp_prot);
}
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");
git://git.onelab.eu / linux-2.6.git / blobdiff