-/* SCTP kernel reference Implementation
+/* SCTP kernel implementation
* (C) Copyright IBM Corp. 2001, 2004
* Copyright (c) 1999-2000 Cisco, Inc.
* Copyright (c) 1999-2001 Motorola, Inc.
* Copyright (c) 2001 Nokia, Inc.
* Copyright (c) 2001 La Monte H.P. Yarroll
*
- * This file is part of the SCTP kernel reference Implementation
+ * This file is part of the SCTP kernel implementation
*
* Initialization/cleanup for SCTP protocol support.
*
- * The SCTP reference implementation is free software;
+ * This SCTP implementation is free software;
* you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
- * The SCTP reference implementation is distributed in the hope that it
+ * This SCTP implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* be incorporated into the next SCTP release.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/seq_file.h>
+#include <linux/bootmem.h>
+#include <linux/highmem.h>
+#include <linux/swap.h>
+#include <linux/slab.h>
+#include <net/net_namespace.h>
#include <net/protocol.h>
#include <net/ip.h>
#include <net/ipv6.h>
/* Global data structures. */
struct sctp_globals sctp_globals __read_mostly;
-struct proc_dir_entry *proc_net_sctp;
DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics) __read_mostly;
+#ifdef CONFIG_PROC_FS
+struct proc_dir_entry *proc_net_sctp;
+#endif
+
struct idr sctp_assocs_id;
DEFINE_SPINLOCK(sctp_assocs_id_lock);
* the Out-of-the-blue (OOTB) packets. A control sock will be created
* for this socket at the initialization time.
*/
-static struct socket *sctp_ctl_socket;
+static struct sock *sctp_ctl_sock;
static struct sctp_pf *sctp_pf_inet6_specific;
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 __read_mostly;
-kmem_cache_t *sctp_bucket_cachep __read_mostly;
+struct kmem_cache *sctp_chunk_cachep __read_mostly;
+struct kmem_cache *sctp_bucket_cachep __read_mostly;
+
+long sysctl_sctp_mem[3];
+int sysctl_sctp_rmem[3];
+int sysctl_sctp_wmem[3];
/* Return the address of the control sock. */
struct sock *sctp_get_ctl_sock(void)
{
- return sctp_ctl_socket->sk;
+ return sctp_ctl_sock;
}
/* Set up the proc fs entry for the SCTP protocol. */
static __init int sctp_proc_init(void)
{
+ if (percpu_counter_init(&sctp_sockets_allocated, 0))
+ goto out_nomem;
+#ifdef CONFIG_PROC_FS
if (!proc_net_sctp) {
- struct proc_dir_entry *ent;
- ent = proc_mkdir("net/sctp", NULL);
- if (ent) {
- ent->owner = THIS_MODULE;
- proc_net_sctp = ent;
- } else
- goto out_nomem;
+ proc_net_sctp = proc_mkdir("sctp", init_net.proc_net);
+ if (!proc_net_sctp)
+ goto out_free_percpu;
}
if (sctp_snmp_proc_init())
- goto out_nomem;
+ goto out_snmp_proc_init;
if (sctp_eps_proc_init())
- goto out_nomem;
+ goto out_eps_proc_init;
if (sctp_assocs_proc_init())
- goto out_nomem;
+ goto out_assocs_proc_init;
+ if (sctp_remaddr_proc_init())
+ goto out_remaddr_proc_init;
return 0;
+out_remaddr_proc_init:
+ sctp_assocs_proc_exit();
+out_assocs_proc_init:
+ sctp_eps_proc_exit();
+out_eps_proc_init:
+ sctp_snmp_proc_exit();
+out_snmp_proc_init:
+ if (proc_net_sctp) {
+ proc_net_sctp = NULL;
+ remove_proc_entry("sctp", init_net.proc_net);
+ }
+out_free_percpu:
+ percpu_counter_destroy(&sctp_sockets_allocated);
+#else
+ return 0;
+#endif /* CONFIG_PROC_FS */
+
out_nomem:
return -ENOMEM;
}
-/* Clean up the proc fs entry for the SCTP protocol.
+/* Clean up the proc fs entry for the SCTP protocol.
* Note: Do not make this __exit as it is used in the init error
* path.
*/
static void sctp_proc_exit(void)
{
+#ifdef CONFIG_PROC_FS
sctp_snmp_proc_exit();
sctp_eps_proc_exit();
sctp_assocs_proc_exit();
+ sctp_remaddr_proc_exit();
if (proc_net_sctp) {
proc_net_sctp = NULL;
- remove_proc_entry("net/sctp", NULL);
+ remove_proc_entry("sctp", init_net.proc_net);
}
+#endif
+ percpu_counter_destroy(&sctp_sockets_allocated);
}
/* Private helper to extract ipv4 address and stash them in
addr->a.v4.sin_family = AF_INET;
addr->a.v4.sin_port = 0;
addr->a.v4.sin_addr.s_addr = ifa->ifa_local;
- addr->a_h = addr->a;
+ addr->valid = 1;
+ INIT_LIST_HEAD(&addr->list);
list_add_tail(&addr->list, addrlist);
}
}
/* Extract our IP addresses from the system and stash them in the
* protocol structure.
*/
-static void __sctp_get_local_addr_list(void)
+static void sctp_get_local_addr_list(void)
{
struct net_device *dev;
struct list_head *pos;
struct sctp_af *af;
- read_lock(&dev_base_lock);
- for (dev = dev_base; dev; dev = dev->next) {
+ rcu_read_lock();
+ for_each_netdev_rcu(&init_net, dev) {
__list_for_each(pos, &sctp_address_families) {
af = list_entry(pos, struct sctp_af, list);
af->copy_addrlist(&sctp_local_addr_list, dev);
}
}
- read_unlock(&dev_base_lock);
-}
-
-static void sctp_get_local_addr_list(void)
-{
- unsigned long flags;
-
- sctp_spin_lock_irqsave(&sctp_local_addr_lock, flags);
- __sctp_get_local_addr_list();
- sctp_spin_unlock_irqrestore(&sctp_local_addr_lock, flags);
+ rcu_read_unlock();
}
/* Free the existing local addresses. */
-static void __sctp_free_local_addr_list(void)
+static void sctp_free_local_addr_list(void)
{
struct sctp_sockaddr_entry *addr;
struct list_head *pos, *temp;
}
}
-/* Free the existing local addresses. */
-static void sctp_free_local_addr_list(void)
+void sctp_local_addr_free(struct rcu_head *head)
{
- unsigned long flags;
-
- sctp_spin_lock_irqsave(&sctp_local_addr_lock, flags);
- __sctp_free_local_addr_list();
- sctp_spin_unlock_irqrestore(&sctp_local_addr_lock, flags);
+ struct sctp_sockaddr_entry *e = container_of(head,
+ struct sctp_sockaddr_entry, rcu);
+ kfree(e);
}
/* Copy the local addresses which are valid for 'scope' into 'bp'. */
{
struct sctp_sockaddr_entry *addr;
int error = 0;
- struct list_head *pos;
- unsigned long flags;
- sctp_spin_lock_irqsave(&sctp_local_addr_lock, flags);
- list_for_each(pos, &sctp_local_addr_list) {
- addr = list_entry(pos, struct sctp_sockaddr_entry, list);
- if (sctp_in_scope(&addr->a_h, scope)) {
+ rcu_read_lock();
+ list_for_each_entry_rcu(addr, &sctp_local_addr_list, list) {
+ if (!addr->valid)
+ continue;
+ if (sctp_in_scope(&addr->a, scope)) {
/* Now that the address is in scope, check to see if
* the address type is really supported by the local
* sock as well as the remote peer.
*/
- if ((((AF_INET == addr->a_h.sa.sa_family) &&
+ if ((((AF_INET == addr->a.sa.sa_family) &&
(copy_flags & SCTP_ADDR4_PEERSUPP))) ||
- (((AF_INET6 == addr->a_h.sa.sa_family) &&
+ (((AF_INET6 == addr->a.sa.sa_family) &&
(copy_flags & SCTP_ADDR6_ALLOWED) &&
(copy_flags & SCTP_ADDR6_PEERSUPP)))) {
- error = sctp_add_bind_addr(bp, &addr->a_h, 1,
- GFP_ATOMIC);
+ error = sctp_add_bind_addr(bp, &addr->a,
+ SCTP_ADDR_SRC, GFP_ATOMIC);
if (error)
goto end_copy;
}
}
end_copy:
- sctp_spin_unlock_irqrestore(&sctp_local_addr_lock, flags);
+ rcu_read_unlock();
return error;
}
int is_saddr)
{
void *from;
- __u16 *port;
+ __be16 *port;
struct sctphdr *sh;
port = &addr->v4.sin_port;
addr->v4.sin_family = AF_INET;
- sh = (struct sctphdr *) skb->h.raw;
+ sh = sctp_hdr(skb);
if (is_saddr) {
- *port = ntohs(sh->source);
- from = &skb->nh.iph->saddr;
+ *port = sh->source;
+ from = &ip_hdr(skb)->saddr;
} else {
- *port = ntohs(sh->dest);
- from = &skb->nh.iph->daddr;
+ *port = sh->dest;
+ from = &ip_hdr(skb)->daddr;
}
memcpy(&addr->v4.sin_addr.s_addr, from, sizeof(struct in_addr));
}
static void sctp_v4_from_sk(union sctp_addr *addr, struct sock *sk)
{
addr->v4.sin_family = AF_INET;
- addr->v4.sin_port = inet_sk(sk)->num;
- addr->v4.sin_addr.s_addr = inet_sk(sk)->rcv_saddr;
+ addr->v4.sin_port = 0;
+ addr->v4.sin_addr.s_addr = inet_sk(sk)->inet_rcv_saddr;
}
/* Initialize sk->sk_rcv_saddr from sctp_addr. */
static void sctp_v4_to_sk_saddr(union sctp_addr *addr, struct sock *sk)
{
- inet_sk(sk)->rcv_saddr = addr->v4.sin_addr.s_addr;
+ inet_sk(sk)->inet_rcv_saddr = addr->v4.sin_addr.s_addr;
}
/* Initialize sk->sk_daddr from sctp_addr. */
static void sctp_v4_to_sk_daddr(union sctp_addr *addr, struct sock *sk)
{
- inet_sk(sk)->daddr = addr->v4.sin_addr.s_addr;
+ inet_sk(sk)->inet_daddr = addr->v4.sin_addr.s_addr;
}
/* Initialize a sctp_addr from an address parameter. */
static void sctp_v4_from_addr_param(union sctp_addr *addr,
union sctp_addr_param *param,
- __u16 port, int iif)
+ __be16 port, int iif)
{
addr->v4.sin_family = AF_INET;
addr->v4.sin_port = port;
param->v4.param_hdr.type = SCTP_PARAM_IPV4_ADDRESS;
param->v4.param_hdr.length = htons(length);
- param->v4.addr.s_addr = addr->v4.sin_addr.s_addr;
+ param->v4.addr.s_addr = addr->v4.sin_addr.s_addr;
return length;
}
/* Initialize a sctp_addr from a dst_entry. */
-static void sctp_v4_dst_saddr(union sctp_addr *saddr, struct dst_entry *dst,
+static void sctp_v4_dst_saddr(union sctp_addr *saddr, struct flowi4 *fl4,
__be16 port)
{
- struct rtable *rt = (struct rtable *)dst;
saddr->v4.sin_family = AF_INET;
saddr->v4.sin_port = port;
- saddr->v4.sin_addr.s_addr = rt->rt_src;
+ saddr->v4.sin_addr.s_addr = fl4->saddr;
}
/* Compare two addresses exactly. */
}
/* Initialize addr struct to INADDR_ANY. */
-static void sctp_v4_inaddr_any(union sctp_addr *addr, unsigned short port)
+static void sctp_v4_inaddr_any(union sctp_addr *addr, __be16 port)
{
addr->v4.sin_family = AF_INET;
- addr->v4.sin_addr.s_addr = INADDR_ANY;
+ addr->v4.sin_addr.s_addr = htonl(INADDR_ANY);
addr->v4.sin_port = port;
}
/* Is this a wildcard address? */
static int sctp_v4_is_any(const union sctp_addr *addr)
{
- return INADDR_ANY == addr->v4.sin_addr.s_addr;
+ return htonl(INADDR_ANY) == addr->v4.sin_addr.s_addr;
}
/* This function checks if the address is a valid address to be used for
struct sctp_sock *sp,
const struct sk_buff *skb)
{
+ /* IPv4 addresses not allowed */
+ if (sp && ipv6_only_sock(sctp_opt2sk(sp)))
+ return 0;
+
/* Is this a non-unicast address or a unusable SCTP address? */
- if (IS_IPV4_UNUSABLE_ADDRESS(&addr->v4.sin_addr.s_addr))
+ 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;
+ /* Is this a broadcast address? */
+ if (skb && skb_rtable(skb)->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_sock *sp)
{
- int ret = inet_addr_type(addr->v4.sin_addr.s_addr);
+ int ret = inet_addr_type(&init_net, addr->v4.sin_addr.s_addr);
- if (addr->v4.sin_addr.s_addr != INADDR_ANY &&
+ if (addr->v4.sin_addr.s_addr != htonl(INADDR_ANY) &&
ret != RTN_LOCAL &&
!sp->inet.freebind &&
!sysctl_ip_nonlocal_bind)
return 0;
+ if (ipv6_only_sock(sctp_opt2sk(sp)))
+ return 0;
+
return 1;
}
* of requested destination address, sender and receiver
* SHOULD include all of its addresses with level greater
* than or equal to L.
+ *
+ * IPv4 scoping can be controlled through sysctl option
+ * net.sctp.addr_scope_policy
*/
static sctp_scope_t sctp_v4_scope(union sctp_addr *addr)
{
sctp_scope_t retval;
- /* Should IPv4 scoping be a sysctl configurable option
- * so users can turn it off (default on) for certain
- * unconventional networking environments?
- */
-
/* Check for unusable SCTP addresses. */
- if (IS_IPV4_UNUSABLE_ADDRESS(&addr->v4.sin_addr.s_addr)) {
+ if (IS_IPV4_UNUSABLE_ADDRESS(addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_UNUSABLE;
- } else if (LOOPBACK(addr->v4.sin_addr.s_addr)) {
+ } else if (ipv4_is_loopback(addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_LOOPBACK;
- } else if (IS_IPV4_LINK_ADDRESS(&addr->v4.sin_addr.s_addr)) {
+ } else if (ipv4_is_linklocal_169(addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_LINK;
- } else if (IS_IPV4_PRIVATE_ADDRESS(&addr->v4.sin_addr.s_addr)) {
+ } else if (ipv4_is_private_10(addr->v4.sin_addr.s_addr) ||
+ ipv4_is_private_172(addr->v4.sin_addr.s_addr) ||
+ ipv4_is_private_192(addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_PRIVATE;
} else {
retval = SCTP_SCOPE_GLOBAL;
* 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)
+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 flowi fl;
+ struct flowi4 *fl4 = &fl->u.ip4;
struct sctp_bind_addr *bp;
- rwlock_t *addr_lock;
struct sctp_sockaddr_entry *laddr;
- struct list_head *pos;
struct dst_entry *dst = NULL;
+ union sctp_addr *daddr = &t->ipaddr;
union sctp_addr dst_saddr;
- memset(&fl, 0x0, sizeof(struct flowi));
- fl.fl4_dst = daddr->v4.sin_addr.s_addr;
- fl.proto = IPPROTO_SCTP;
+ memset(fl4, 0x0, sizeof(struct flowi4));
+ fl4->daddr = daddr->v4.sin_addr.s_addr;
+ fl4->fl4_dport = daddr->v4.sin_port;
+ fl4->flowi4_proto = IPPROTO_SCTP;
if (asoc) {
- fl.fl4_tos = RT_CONN_FLAGS(asoc->base.sk);
- fl.oif = asoc->base.sk->sk_bound_dev_if;
+ fl4->flowi4_tos = RT_CONN_FLAGS(asoc->base.sk);
+ fl4->flowi4_oif = asoc->base.sk->sk_bound_dev_if;
+ fl4->fl4_sport = htons(asoc->base.bind_addr.port);
+ }
+ if (saddr) {
+ fl4->saddr = saddr->v4.sin_addr.s_addr;
+ fl4->fl4_sport = saddr->v4.sin_port;
}
- if (saddr)
- fl.fl4_src = saddr->v4.sin_addr.s_addr;
- SCTP_DEBUG_PRINTK("%s: DST:%u.%u.%u.%u, SRC:%u.%u.%u.%u - ",
- __FUNCTION__, NIPQUAD(fl.fl4_dst),
- NIPQUAD(fl.fl4_src));
+ SCTP_DEBUG_PRINTK("%s: DST:%pI4, SRC:%pI4 - ",
+ __func__, &fl4->daddr, &fl4->saddr);
- if (!ip_route_output_key(&rt, &fl)) {
- dst = &rt->u.dst;
- }
+ rt = ip_route_output_key(&init_net, fl4);
+ if (!IS_ERR(rt))
+ dst = &rt->dst;
/* If there is no association or if a source address is passed, no
* more validation is required.
goto out;
bp = &asoc->base.bind_addr;
- addr_lock = &asoc->base.addr_lock;
if (dst) {
/* Walk through the bind address list and look for a bind
* address that matches the source address of the returned dst.
*/
- sctp_read_lock(addr_lock);
- list_for_each(pos, &bp->address_list) {
- laddr = list_entry(pos, struct sctp_sockaddr_entry,
- list);
- if (!laddr->use_as_src)
+ sctp_v4_dst_saddr(&dst_saddr, fl4, htons(bp->port));
+ rcu_read_lock();
+ list_for_each_entry_rcu(laddr, &bp->address_list, list) {
+ if (!laddr->valid || (laddr->state != SCTP_ADDR_SRC))
continue;
- sctp_v4_dst_saddr(&dst_saddr, dst, htons(bp->port));
if (sctp_v4_cmp_addr(&dst_saddr, &laddr->a))
goto out_unlock;
}
- sctp_read_unlock(addr_lock);
+ rcu_read_unlock();
/* None of the bound addresses match the source address of the
* dst. So release it.
/* Walk through the bind address list and try to get a dst that
* matches a bind address as the source address.
*/
- sctp_read_lock(addr_lock);
- list_for_each(pos, &bp->address_list) {
- laddr = list_entry(pos, struct sctp_sockaddr_entry, list);
-
- if ((laddr->use_as_src) &&
- (AF_INET == laddr->a_h.sa.sa_family)) {
- fl.fl4_src = laddr->a_h.v4.sin_addr.s_addr;
- if (!ip_route_output_key(&rt, &fl)) {
- dst = &rt->u.dst;
+ rcu_read_lock();
+ list_for_each_entry_rcu(laddr, &bp->address_list, list) {
+ if (!laddr->valid)
+ continue;
+ if ((laddr->state == SCTP_ADDR_SRC) &&
+ (AF_INET == laddr->a.sa.sa_family)) {
+ fl4->saddr = laddr->a.v4.sin_addr.s_addr;
+ fl4->fl4_sport = laddr->a.v4.sin_port;
+ rt = ip_route_output_key(&init_net, fl4);
+ if (!IS_ERR(rt)) {
+ dst = &rt->dst;
goto out_unlock;
}
}
}
out_unlock:
- sctp_read_unlock(addr_lock);
+ rcu_read_unlock();
out:
+ t->dst = dst;
if (dst)
- SCTP_DEBUG_PRINTK("rt_dst:%u.%u.%u.%u, rt_src:%u.%u.%u.%u\n",
- NIPQUAD(rt->rt_dst), NIPQUAD(rt->rt_src));
+ SCTP_DEBUG_PRINTK("rt_dst:%pI4, rt_src:%pI4\n",
+ &fl4->daddr, &fl4->saddr);
else
SCTP_DEBUG_PRINTK("NO ROUTE\n");
-
- return dst;
}
/* 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.
*/
-static 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_sock *sk,
+ struct sctp_transport *t,
+ struct flowi *fl)
{
- struct rtable *rt = (struct rtable *)dst;
-
- if (!asoc)
- return;
+ union sctp_addr *saddr = &t->saddr;
+ struct rtable *rt = (struct rtable *)t->dst;
if (rt) {
saddr->v4.sin_family = AF_INET;
- saddr->v4.sin_port = asoc->base.bind_addr.port;
- saddr->v4.sin_addr.s_addr = rt->rt_src;
+ saddr->v4.sin_addr.s_addr = fl->u.ip4.saddr;
}
}
/* What interface did this skb arrive on? */
static int sctp_v4_skb_iif(const struct sk_buff *skb)
{
- return ((struct rtable *)skb->dst)->rt_iif;
+ return skb_rtable(skb)->rt_iif;
}
/* Was this packet marked by Explicit Congestion Notification? */
static int sctp_v4_is_ce(const struct sk_buff *skb)
{
- return INET_ECN_is_ce(skb->nh.iph->tos);
+ return INET_ECN_is_ce(ip_hdr(skb)->tos);
}
/* Create and initialize a new sk for the socket returned by accept(). */
static struct sock *sctp_v4_create_accept_sk(struct sock *sk,
struct sctp_association *asoc)
{
- struct inet_sock *inet = inet_sk(sk);
+ struct sock *newsk = sk_alloc(sock_net(sk), PF_INET, GFP_KERNEL,
+ sk->sk_prot);
struct inet_sock *newinet;
- struct sock *newsk = sk_alloc(PF_INET, GFP_KERNEL, sk->sk_prot, 1);
if (!newsk)
goto out;
sock_init_data(NULL, newsk);
- newsk->sk_type = SOCK_STREAM;
-
- 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_family = PF_INET;
- newsk->sk_protocol = IPPROTO_SCTP;
- newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
+ sctp_copy_sock(newsk, sk, asoc);
sock_reset_flag(newsk, SOCK_ZAPPED);
newinet = inet_sk(newsk);
- /* Initialize sk's sport, dport, rcv_saddr and daddr for
- * getsockname() and getpeername()
- */
- newinet->sport = inet->sport;
- newinet->saddr = inet->saddr;
- newinet->rcv_saddr = inet->rcv_saddr;
- newinet->dport = htons(asoc->peer.port);
- newinet->daddr = asoc->peer.primary_addr.v4.sin_addr.s_addr;
- newinet->pmtudisc = inet->pmtudisc;
- newinet->id = asoc->next_tsn ^ jiffies;
-
- newinet->uc_ttl = -1;
- newinet->mc_loop = 1;
- newinet->mc_ttl = 1;
- newinet->mc_index = 0;
- newinet->mc_list = NULL;
+ newinet->inet_daddr = asoc->peer.primary_addr.v4.sin_addr.s_addr;
sk_refcnt_debug_inc(newsk);
/* Dump the v4 addr to the seq file. */
static void sctp_v4_seq_dump_addr(struct seq_file *seq, union sctp_addr *addr)
{
- seq_printf(seq, "%d.%d.%d.%d ", NIPQUAD(addr->v4.sin_addr));
+ seq_printf(seq, "%pI4 ", &addr->v4.sin_addr);
+}
+
+static void sctp_v4_ecn_capable(struct sock *sk)
+{
+ INET_ECN_xmit(sk);
}
/* Event handler for inet address addition/deletion events.
- * Basically, whenever there is an event, we re-build our local address list.
+ * The sctp_local_addr_list needs to be protocted by a spin lock since
+ * multiple notifiers (say IPv4 and IPv6) may be running at the same
+ * time and thus corrupt the list.
+ * The reader side is protected with RCU.
*/
-int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
- void *ptr)
+static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
+ void *ptr)
{
- unsigned long flags;
+ struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
+ struct sctp_sockaddr_entry *addr = NULL;
+ struct sctp_sockaddr_entry *temp;
+ int found = 0;
+
+ if (!net_eq(dev_net(ifa->ifa_dev->dev), &init_net))
+ return NOTIFY_DONE;
- sctp_spin_lock_irqsave(&sctp_local_addr_lock, flags);
- __sctp_free_local_addr_list();
- __sctp_get_local_addr_list();
- sctp_spin_unlock_irqrestore(&sctp_local_addr_lock, flags);
+ switch (ev) {
+ case NETDEV_UP:
+ addr = kmalloc(sizeof(struct sctp_sockaddr_entry), GFP_ATOMIC);
+ if (addr) {
+ addr->a.v4.sin_family = AF_INET;
+ addr->a.v4.sin_port = 0;
+ addr->a.v4.sin_addr.s_addr = ifa->ifa_local;
+ addr->valid = 1;
+ spin_lock_bh(&sctp_local_addr_lock);
+ list_add_tail_rcu(&addr->list, &sctp_local_addr_list);
+ spin_unlock_bh(&sctp_local_addr_lock);
+ }
+ break;
+ case NETDEV_DOWN:
+ spin_lock_bh(&sctp_local_addr_lock);
+ list_for_each_entry_safe(addr, temp,
+ &sctp_local_addr_list, list) {
+ if (addr->a.sa.sa_family == AF_INET &&
+ addr->a.v4.sin_addr.s_addr ==
+ ifa->ifa_local) {
+ found = 1;
+ addr->valid = 0;
+ list_del_rcu(&addr->list);
+ break;
+ }
+ }
+ spin_unlock_bh(&sctp_local_addr_lock);
+ if (found)
+ call_rcu(&addr->rcu, sctp_local_addr_free);
+ break;
+ }
return NOTIFY_DONE;
}
static int sctp_ctl_sock_init(void)
{
int err;
- sa_family_t family;
+ sa_family_t family = PF_INET;
if (sctp_get_pf_specific(PF_INET6))
family = PF_INET6;
- else
- family = PF_INET;
- err = sock_create_kern(family, SOCK_SEQPACKET, IPPROTO_SCTP,
- &sctp_ctl_socket);
+ err = inet_ctl_sock_create(&sctp_ctl_sock, family,
+ SOCK_SEQPACKET, IPPROTO_SCTP, &init_net);
+
+ /* If IPv6 socket could not be created, try the IPv4 socket */
+ if (err < 0 && family == PF_INET6)
+ err = inet_ctl_sock_create(&sctp_ctl_sock, AF_INET,
+ SOCK_SEQPACKET, IPPROTO_SCTP,
+ &init_net);
+
if (err < 0) {
- printk(KERN_ERR
- "SCTP: Failed to create the SCTP control socket.\n");
+ pr_err("Failed to create the SCTP control socket\n");
return err;
}
- sctp_ctl_socket->sk->sk_allocation = GFP_ATOMIC;
- inet_sk(sctp_ctl_socket->sk)->uc_ttl = -1;
-
return 0;
}
/* Initialize and copy out a msgname from an inbound skb. */
static void sctp_inet_skb_msgname(struct sk_buff *skb, char *msgname, int *len)
{
- struct sctphdr *sh;
- struct sockaddr_in *sin;
-
if (msgname) {
+ struct sctphdr *sh = sctp_hdr(skb);
+ struct sockaddr_in *sin = (struct sockaddr_in *)msgname;
+
sctp_inet_msgname(msgname, len);
- sin = (struct sockaddr_in *)msgname;
- sh = (struct sctphdr *)skb->h.raw;
sin->sin_port = sh->source;
- sin->sin_addr.s_addr = skb->nh.iph->saddr;
+ sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
}
}
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);
+ return AF_INET == family;
}
/* Address matching with wildcards allowed. */
/* PF_INET only supports AF_INET addresses. */
if (addr1->sa.sa_family != addr2->sa.sa_family)
return 0;
- if (INADDR_ANY == addr1->v4.sin_addr.s_addr ||
- INADDR_ANY == addr2->v4.sin_addr.s_addr)
+ if (htonl(INADDR_ANY) == addr1->v4.sin_addr.s_addr ||
+ htonl(INADDR_ANY) == addr2->v4.sin_addr.s_addr)
return 1;
if (addr1->v4.sin_addr.s_addr == addr2->v4.sin_addr.s_addr)
return 1;
* chunks. Returns number of addresses supported.
*/
static int sctp_inet_supported_addrs(const struct sctp_sock *opt,
- __u16 *types)
+ __be16 *types)
{
types[0] = SCTP_PARAM_IPV4_ADDRESS;
return 1;
/* Wrapper routine that calls the ip transmit routine. */
static inline int sctp_v4_xmit(struct sk_buff *skb,
- struct sctp_transport *transport, int ipfragok)
+ struct sctp_transport *transport)
{
- SCTP_DEBUG_PRINTK("%s: skb:%p, len:%d, "
- "src:%u.%u.%u.%u, dst:%u.%u.%u.%u\n",
- __FUNCTION__, skb, skb->len,
- NIPQUAD(((struct rtable *)skb->dst)->rt_src),
- NIPQUAD(((struct rtable *)skb->dst)->rt_dst));
+ struct inet_sock *inet = inet_sk(skb->sk);
+
+ SCTP_DEBUG_PRINTK("%s: skb:%p, len:%d, src:%pI4, dst:%pI4\n",
+ __func__, skb, skb->len,
+ &transport->fl.u.ip4.saddr,
+ &transport->fl.u.ip4.daddr);
+
+ inet->pmtudisc = transport->param_flags & SPP_PMTUD_ENABLE ?
+ IP_PMTUDISC_DO : IP_PMTUDISC_DONT;
SCTP_INC_STATS(SCTP_MIB_OUTSCTPPACKS);
- return ip_queue_xmit(skb, skb->sk, ipfragok);
+ return ip_queue_xmit(skb, &transport->fl);
}
-static struct sctp_af sctp_ipv4_specific;
+static struct sctp_af sctp_af_inet;
static struct sctp_pf sctp_pf_inet = {
.event_msgname = sctp_inet_event_msgname,
.supported_addrs = sctp_inet_supported_addrs,
.create_accept_sk = sctp_v4_create_accept_sk,
.addr_v4map = sctp_v4_addr_v4map,
- .af = &sctp_ipv4_specific,
+ .af = &sctp_af_inet
};
/* Notifier for inetaddr addition/deletion events. */
.protocol = IPPROTO_SCTP,
.prot = &sctp_prot,
.ops = &inet_seqpacket_ops,
- .capability = -1,
.no_check = 0,
.flags = SCTP_PROTOSW_FLAG
};
.protocol = IPPROTO_SCTP,
.prot = &sctp_prot,
.ops = &inet_seqpacket_ops,
- .capability = -1,
.no_check = 0,
.flags = SCTP_PROTOSW_FLAG
};
/* Register with IP layer. */
-static struct net_protocol sctp_protocol = {
+static const struct net_protocol sctp_protocol = {
.handler = sctp_rcv,
.err_handler = sctp_v4_err,
.no_policy = 1,
};
/* IPv4 address related functions. */
-static struct sctp_af sctp_ipv4_specific = {
+static struct sctp_af sctp_af_inet = {
.sa_family = AF_INET,
.sctp_xmit = sctp_v4_xmit,
.setsockopt = ip_setsockopt,
.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,
.skb_iif = sctp_v4_skb_iif,
.is_ce = sctp_v4_is_ce,
.seq_dump_addr = sctp_v4_seq_dump_addr,
+ .ecn_capable = sctp_v4_ecn_capable,
.net_header_len = sizeof(struct iphdr),
.sockaddr_len = sizeof(struct sockaddr_in),
#ifdef CONFIG_COMPAT
return 1;
}
-static int __init init_sctp_mibs(void)
+static inline int init_sctp_mibs(void)
{
- sctp_statistics[0] = alloc_percpu(struct sctp_mib);
- if (!sctp_statistics[0])
- return -ENOMEM;
- sctp_statistics[1] = alloc_percpu(struct sctp_mib);
- if (!sctp_statistics[1]) {
- free_percpu(sctp_statistics[0]);
- return -ENOMEM;
- }
+ return snmp_mib_init((void __percpu **)sctp_statistics,
+ sizeof(struct sctp_mib),
+ __alignof__(struct sctp_mib));
+}
+
+static inline void cleanup_sctp_mibs(void)
+{
+ snmp_mib_free((void __percpu **)sctp_statistics);
+}
+
+static void sctp_v4_pf_init(void)
+{
+ /* Initialize the SCTP specific PF functions. */
+ sctp_register_pf(&sctp_pf_inet, PF_INET);
+ sctp_register_af(&sctp_af_inet);
+}
+
+static void sctp_v4_pf_exit(void)
+{
+ list_del(&sctp_af_inet.list);
+}
+
+static int sctp_v4_protosw_init(void)
+{
+ int rc;
+
+ rc = proto_register(&sctp_prot, 1);
+ if (rc)
+ return rc;
+
+ /* Register SCTP(UDP and TCP style) with socket layer. */
+ inet_register_protosw(&sctp_seqpacket_protosw);
+ inet_register_protosw(&sctp_stream_protosw);
+
return 0;
+}
+
+static void sctp_v4_protosw_exit(void)
+{
+ inet_unregister_protosw(&sctp_stream_protosw);
+ inet_unregister_protosw(&sctp_seqpacket_protosw);
+ proto_unregister(&sctp_prot);
+}
+
+static int sctp_v4_add_protocol(void)
+{
+ /* Register notifier for inet address additions/deletions. */
+ register_inetaddr_notifier(&sctp_inetaddr_notifier);
+
+ /* Register SCTP with inet layer. */
+ if (inet_add_protocol(&sctp_protocol, IPPROTO_SCTP) < 0)
+ return -EAGAIN;
+ return 0;
}
-static void cleanup_sctp_mibs(void)
+static void sctp_v4_del_protocol(void)
{
- free_percpu(sctp_statistics[0]);
- free_percpu(sctp_statistics[1]);
+ inet_del_protocol(&sctp_protocol, IPPROTO_SCTP);
+ unregister_inetaddr_notifier(&sctp_inetaddr_notifier);
}
/* Initialize the universe into something sensible. */
int i;
int status = -EINVAL;
unsigned long goal;
+ unsigned long limit;
+ unsigned long nr_pages;
+ int max_share;
int order;
/* SCTP_DEBUG sanity check. */
if (!sctp_sanity_check())
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)
- 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. */
+ /* Allocate bind_bucket and chunk caches. */
status = -ENOBUFS;
sctp_bucket_cachep = kmem_cache_create("sctp_bind_bucket",
sizeof(struct sctp_bind_bucket),
0, SLAB_HWCACHE_ALIGN,
- NULL, NULL);
-
+ NULL);
if (!sctp_bucket_cachep)
- goto err_bucket_cachep;
+ goto out;
sctp_chunk_cachep = kmem_cache_create("sctp_chunk",
sizeof(struct sctp_chunk),
0, SLAB_HWCACHE_ALIGN,
- NULL, NULL);
+ NULL);
if (!sctp_chunk_cachep)
goto err_chunk_cachep;
/* Initialize object count debugging. */
sctp_dbg_objcnt_init();
- /* Initialize the SCTP specific PF functions. */
- sctp_register_pf(&sctp_pf_inet, PF_INET);
/*
* 14. Suggested SCTP Protocol Parameter Values
*/
sctp_cookie_preserve_enable = 1;
/* Max.Burst - 4 */
- sctp_max_burst = SCTP_MAX_BURST;
+ sctp_max_burst = SCTP_DEFAULT_MAX_BURST;
/* Association.Max.Retrans - 10 attempts
* Path.Max.Retrans - 5 attempts (per destination address)
/* Initialize handle used for association ids. */
idr_init(&sctp_assocs_id);
+ /* Set the pressure threshold to be a fraction of global memory that
+ * is up to 1/2 at 256 MB, decreasing toward zero with the amount of
+ * memory, with a floor of 128 pages.
+ * Note this initializes the data in sctpv6_prot too
+ * Unabashedly stolen from tcp_init
+ */
+ nr_pages = totalram_pages - totalhigh_pages;
+ limit = min(nr_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
+ limit = (limit * (nr_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
+ limit = max(limit, 128UL);
+ sysctl_sctp_mem[0] = limit / 4 * 3;
+ sysctl_sctp_mem[1] = limit;
+ sysctl_sctp_mem[2] = sysctl_sctp_mem[0] * 2;
+
+ /* Set per-socket limits to no more than 1/128 the pressure threshold*/
+ limit = (sysctl_sctp_mem[1]) << (PAGE_SHIFT - 7);
+ max_share = min(4UL*1024*1024, limit);
+
+ sysctl_sctp_rmem[0] = SK_MEM_QUANTUM; /* give each asoc 1 page min */
+ sysctl_sctp_rmem[1] = (1500 *(sizeof(struct sk_buff) + 1));
+ sysctl_sctp_rmem[2] = max(sysctl_sctp_rmem[1], max_share);
+
+ sysctl_sctp_wmem[0] = SK_MEM_QUANTUM;
+ sysctl_sctp_wmem[1] = 16*1024;
+ sysctl_sctp_wmem[2] = max(64*1024, max_share);
+
/* Size and allocate the association hash table.
* The methodology is similar to that of the tcp hash tables.
*/
- if (num_physpages >= (128 * 1024))
- goal = num_physpages >> (22 - PAGE_SHIFT);
+ if (totalram_pages >= (128 * 1024))
+ goal = totalram_pages >> (22 - PAGE_SHIFT);
else
- goal = num_physpages >> (24 - PAGE_SHIFT);
+ goal = totalram_pages >> (24 - PAGE_SHIFT);
for (order = 0; (1UL << order) < goal; order++)
;
if ((sctp_assoc_hashsize > (64 * 1024)) && order > 0)
continue;
sctp_assoc_hashtable = (struct sctp_hashbucket *)
- __get_free_pages(GFP_ATOMIC, order);
+ __get_free_pages(GFP_ATOMIC|__GFP_NOWARN, order);
} while (!sctp_assoc_hashtable && --order > 0);
if (!sctp_assoc_hashtable) {
- printk(KERN_ERR "SCTP: Failed association hash alloc.\n");
+ pr_err("Failed association hash alloc\n");
status = -ENOMEM;
goto err_ahash_alloc;
}
for (i = 0; i < sctp_assoc_hashsize; i++) {
rwlock_init(&sctp_assoc_hashtable[i].lock);
- sctp_assoc_hashtable[i].chain = NULL;
+ INIT_HLIST_HEAD(&sctp_assoc_hashtable[i].chain);
}
/* Allocate and initialize the endpoint hash table. */
sctp_ep_hashtable = (struct sctp_hashbucket *)
kmalloc(64 * sizeof(struct sctp_hashbucket), GFP_KERNEL);
if (!sctp_ep_hashtable) {
- printk(KERN_ERR "SCTP: Failed endpoint_hash alloc.\n");
+ pr_err("Failed endpoint_hash alloc\n");
status = -ENOMEM;
goto err_ehash_alloc;
}
for (i = 0; i < sctp_ep_hashsize; i++) {
rwlock_init(&sctp_ep_hashtable[i].lock);
- sctp_ep_hashtable[i].chain = NULL;
+ INIT_HLIST_HEAD(&sctp_ep_hashtable[i].chain);
}
/* Allocate and initialize the SCTP port hash table. */
if ((sctp_port_hashsize > (64 * 1024)) && order > 0)
continue;
sctp_port_hashtable = (struct sctp_bind_hashbucket *)
- __get_free_pages(GFP_ATOMIC, order);
+ __get_free_pages(GFP_ATOMIC|__GFP_NOWARN, order);
} while (!sctp_port_hashtable && --order > 0);
if (!sctp_port_hashtable) {
- printk(KERN_ERR "SCTP: Failed bind hash alloc.");
+ pr_err("Failed bind hash alloc\n");
status = -ENOMEM;
goto err_bhash_alloc;
}
for (i = 0; i < sctp_port_hashsize; i++) {
spin_lock_init(&sctp_port_hashtable[i].lock);
- sctp_port_hashtable[i].chain = NULL;
+ INIT_HLIST_HEAD(&sctp_port_hashtable[i].chain);
}
- spin_lock_init(&sctp_port_alloc_lock);
- sctp_port_rover = sysctl_local_port_range[0] - 1;
-
- printk(KERN_INFO "SCTP: Hash tables configured "
- "(established %d bind %d)\n",
+ pr_info("Hash tables configured (established %d bind %d)\n",
sctp_assoc_hashsize, sctp_port_hashsize);
/* Disable ADDIP by default. */
sctp_addip_enable = 0;
+ sctp_addip_noauth = 0;
/* Enable PR-SCTP by default. */
sctp_prsctp_enable = 1;
+ /* Disable AUTH by default. */
+ sctp_auth_enable = 0;
+
+ /* Set SCOPE policy to enabled */
+ sctp_scope_policy = SCTP_SCOPE_POLICY_ENABLE;
+
+ /* Set the default rwnd update threshold */
+ sctp_rwnd_upd_shift = SCTP_DEFAULT_RWND_SHIFT;
+
sctp_sysctl_register();
INIT_LIST_HEAD(&sctp_address_families);
- sctp_register_af(&sctp_ipv4_specific);
+ sctp_v4_pf_init();
+ sctp_v6_pf_init();
+
+ /* Initialize the local address list. */
+ INIT_LIST_HEAD(&sctp_local_addr_list);
+ spin_lock_init(&sctp_local_addr_lock);
+ sctp_get_local_addr_list();
- status = sctp_v6_init();
+ status = sctp_v4_protosw_init();
+
+ if (status)
+ goto err_protosw_init;
+
+ status = sctp_v6_protosw_init();
if (status)
- goto err_v6_init;
+ goto err_v6_protosw_init;
/* Initialize the control inode/socket for handling OOTB packets. */
if ((status = sctp_ctl_sock_init())) {
- printk (KERN_ERR
- "SCTP: Failed to initialize the SCTP control sock.\n");
+ pr_err("Failed to initialize the SCTP control sock\n");
goto err_ctl_sock_init;
}
- /* Initialize the local address list. */
- INIT_LIST_HEAD(&sctp_local_addr_list);
- spin_lock_init(&sctp_local_addr_lock);
-
- /* Register notifier for inet address additions/deletions. */
- register_inetaddr_notifier(&sctp_inetaddr_notifier);
+ status = sctp_v4_add_protocol();
+ if (status)
+ goto err_add_protocol;
- sctp_get_local_addr_list();
+ /* Register SCTP with inet6 layer. */
+ status = sctp_v6_add_protocol();
+ if (status)
+ goto err_v6_add_protocol;
- __unsafe(THIS_MODULE);
status = 0;
out:
return status;
+err_v6_add_protocol:
+ sctp_v4_del_protocol();
+err_add_protocol:
+ inet_ctl_sock_destroy(sctp_ctl_sock);
err_ctl_sock_init:
- sctp_v6_exit();
-err_v6_init:
+ sctp_v6_protosw_exit();
+err_v6_protosw_init:
+ sctp_v4_protosw_exit();
+err_protosw_init:
+ sctp_free_local_addr_list();
+ sctp_v4_pf_exit();
+ sctp_v6_pf_exit();
sctp_sysctl_unregister();
- list_del(&sctp_ipv4_specific.list);
free_pages((unsigned long)sctp_port_hashtable,
get_order(sctp_port_hashsize *
sizeof(struct sctp_bind_hashbucket)));
sizeof(struct sctp_hashbucket)));
err_ahash_alloc:
sctp_dbg_objcnt_exit();
-err_init_proc:
sctp_proc_exit();
+err_init_proc:
cleanup_sctp_mibs();
err_init_mibs:
kmem_cache_destroy(sctp_chunk_cachep);
err_chunk_cachep:
kmem_cache_destroy(sctp_bucket_cachep);
-err_bucket_cachep:
- inet_del_protocol(&sctp_protocol, IPPROTO_SCTP);
- inet_unregister_protosw(&sctp_seqpacket_protosw);
- inet_unregister_protosw(&sctp_stream_protosw);
-err_add_protocol:
- proto_unregister(&sctp_prot);
goto out;
}
* up all the remaining associations and all that memory.
*/
- /* Unregister notifier for inet address additions/deletions. */
- unregister_inetaddr_notifier(&sctp_inetaddr_notifier);
+ /* Unregister with inet6/inet layers. */
+ sctp_v6_del_protocol();
+ sctp_v4_del_protocol();
+
+ /* Free the control endpoint. */
+ inet_ctl_sock_destroy(sctp_ctl_sock);
+
+ /* Free protosw registrations */
+ sctp_v6_protosw_exit();
+ sctp_v4_protosw_exit();
/* Free the local address list. */
sctp_free_local_addr_list();
- /* Free the control endpoint. */
- sock_release(sctp_ctl_socket);
+ /* Unregister with socket layer. */
+ sctp_v6_pf_exit();
+ sctp_v4_pf_exit();
- sctp_v6_exit();
sctp_sysctl_unregister();
- list_del(&sctp_ipv4_specific.list);
free_pages((unsigned long)sctp_assoc_hashtable,
get_order(sctp_assoc_hashsize *
get_order(sctp_port_hashsize *
sizeof(struct sctp_bind_hashbucket)));
- kmem_cache_destroy(sctp_chunk_cachep);
- kmem_cache_destroy(sctp_bucket_cachep);
-
sctp_dbg_objcnt_exit();
sctp_proc_exit();
cleanup_sctp_mibs();
- inet_del_protocol(&sctp_protocol, IPPROTO_SCTP);
- inet_unregister_protosw(&sctp_seqpacket_protosw);
- inet_unregister_protosw(&sctp_stream_protosw);
- proto_unregister(&sctp_prot);
+ rcu_barrier(); /* Wait for completion of call_rcu()'s */
+
+ kmem_cache_destroy(sctp_chunk_cachep);
+ kmem_cache_destroy(sctp_bucket_cachep);
}
module_init(sctp_init);
* __stringify doesn't likes enums, so use IPPROTO_SCTP value (132) directly.
*/
MODULE_ALIAS("net-pf-" __stringify(PF_INET) "-proto-132");
+MODULE_ALIAS("net-pf-" __stringify(PF_INET6) "-proto-132");
MODULE_AUTHOR("Linux Kernel SCTP developers <lksctp-developers@lists.sourceforge.net>");
MODULE_DESCRIPTION("Support for the SCTP protocol (RFC2960)");
+module_param_named(no_checksums, sctp_checksum_disable, bool, 0644);
+MODULE_PARM_DESC(no_checksums, "Disable checksums computing and verification");
MODULE_LICENSE("GPL");
Code Review / linux-2.6.git / blobdiff