#include <linux/inetdevice.h>
#include <linux/seq_file.h>
#include <linux/bootmem.h>
+#include <linux/highmem.h>
+#include <linux/swap.h>
#include <net/net_namespace.h>
#include <net/protocol.h>
#include <net/ip.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);
/* 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("sctp", init_net.proc_net);
- 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;
}
*/
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("sctp", init_net.proc_net);
}
+#endif
+ percpu_counter_destroy(&sctp_sockets_allocated);
}
/* Private helper to extract ipv4 address and stash them in
struct list_head *pos;
struct sctp_af *af;
- read_lock(&dev_base_lock);
- for_each_netdev(&init_net, dev) {
+ 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);
+ rcu_read_unlock();
}
/* Free the existing local addresses. */
{
addr->v4.sin_family = AF_INET;
addr->v4.sin_port = 0;
- addr->v4.sin_addr.s_addr = inet_sk(sk)->rcv_saddr;
+ 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. */
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))
return 0;
/* Is this a broadcast address? */
- if (skb && skb->rtable->rt_flags & RTCF_BROADCAST)
+ if (skb && skb_rtable(skb)->rt_flags & RTCF_BROADCAST)
return 0;
return 1;
!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)) {
retval = SCTP_SCOPE_UNUSABLE;
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 - ",
- __func__, NIPQUAD(fl.fl4_dst),
- NIPQUAD(fl.fl4_src));
+ SCTP_DEBUG_PRINTK("%s: DST:%pI4, SRC:%pI4 - ",
+ __func__, &fl.fl4_dst, &fl.fl4_src);
if (!ip_route_output_key(&init_net, &rt, &fl)) {
dst = &rt->u.dst;
rcu_read_unlock();
out:
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",
+ &rt->rt_dst, &rt->rt_src);
else
SCTP_DEBUG_PRINTK("NO ROUTE\n");
/* What interface did this skb arrive on? */
static int sctp_v4_skb_iif(const struct sk_buff *skb)
{
- return skb->rtable->rt_iif;
+ return skb_rtable(skb)->rt_iif;
}
/* Was this packet marked by Explicit Congestion Notification? */
static struct sock *sctp_v4_create_accept_sk(struct sock *sk,
struct sctp_association *asoc)
{
- struct inet_sock *inet = inet_sk(sk);
- struct inet_sock *newinet;
struct sock *newsk = sk_alloc(sock_net(sk), PF_INET, GFP_KERNEL,
sk->sk_prot);
+ struct inet_sock *newinet;
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)
struct sctp_sockaddr_entry *temp;
int found = 0;
- if (dev_net(ifa->ifa_dev->dev) != &init_net)
+ if (!net_eq(dev_net(ifa->ifa_dev->dev), &init_net))
return NOTIFY_DONE;
switch (ev) {
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 = 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");
/* 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",
+ 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,
- NIPQUAD(skb->rtable->rt_src),
- NIPQUAD(skb->rtable->rt_dst));
+ &skb_rtable(skb)->rt_src,
+ &skb_rtable(skb)->rt_dst);
+
+ 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, ipfragok);
+ return ip_queue_xmit(skb, 0);
}
static struct sctp_af sctp_af_inet;
.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,
static inline int init_sctp_mibs(void)
{
- return snmp_mib_init((void**)sctp_statistics, sizeof(struct sctp_mib));
+ return snmp_mib_init((void __percpu **)sctp_statistics,
+ sizeof(struct sctp_mib));
}
static inline void cleanup_sctp_mibs(void)
{
- snmp_mib_free((void**)sctp_statistics);
+ snmp_mib_free((void __percpu **)sctp_statistics);
}
static void sctp_v4_pf_init(void)
int status = -EINVAL;
unsigned long goal;
unsigned long limit;
+ unsigned long nr_pages;
int max_share;
int order;
* Note this initalizes the data in sctpv6_prot too
* Unabashedly stolen from tcp_init
*/
- limit = min(num_physpages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
- limit = (limit * (num_physpages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
+ 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;
limit = (sysctl_sctp_mem[1]) << (PAGE_SHIFT - 7);
max_share = min(4UL*1024*1024, limit);
- sysctl_sctp_rmem[0] = PAGE_SIZE; /* give each asoc 1 page min */
+ 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);
/* 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++)
;
/* 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);
out:
return status;
err_v6_add_protocol:
- sctp_v6_del_protocol();
-err_add_protocol:
sctp_v4_del_protocol();
+err_add_protocol:
inet_ctl_sock_destroy(sctp_ctl_sock);
err_ctl_sock_init:
sctp_v6_protosw_exit();
sctp_v4_pf_exit();
sctp_v6_pf_exit();
sctp_sysctl_unregister();
- list_del(&sctp_af_inet.list);
free_pages((unsigned long)sctp_port_hashtable,
get_order(sctp_port_hashsize *
sizeof(struct sctp_bind_hashbucket)));
sctp_v4_pf_exit();
sctp_sysctl_unregister();
- list_del(&sctp_af_inet.list);
free_pages((unsigned long)sctp_assoc_hashtable,
get_order(sctp_assoc_hashsize *
sctp_proc_exit();
cleanup_sctp_mibs();
+ rcu_barrier(); /* Wait for completion of call_rcu()'s */
+
kmem_cache_destroy(sctp_chunk_cachep);
kmem_cache_destroy(sctp_bucket_cachep);
}
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");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff