*
* Version: $Id: af_inet.c,v 1.137 2002/02/01 22:01:03 davem Exp $
*
- * Authors: Ross Biro, <bir7@leland.Stanford.Edu>
+ * Authors: Ross Biro
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
* Florian La Roche, <flla@stud.uni-sb.de>
* Alan Cox, <A.Cox@swansea.ac.uk>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kernel.h>
-#include <linux/major.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/timer.h>
#ifdef CONFIG_IP_MROUTE
#include <linux/mroute.h>
#endif
+#include <linux/vs_limit.h>
DEFINE_SNMP_STAT(struct linux_mib, net_statistics);
extern void ip_mc_drop_socket(struct sock *sk);
-/* Per protocol sock slabcache */
-kmem_cache_t *tcp_sk_cachep;
-static kmem_cache_t *udp_sk_cachep;
-static kmem_cache_t *raw4_sk_cachep;
-
/* The inetsw table contains everything that inet_create needs to
* build a new socket.
*/
static struct list_head inetsw[SOCK_MAX];
-static spinlock_t inetsw_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(inetsw_lock);
/* New destruction routine */
void inet_sock_destruct(struct sock *sk)
{
- struct inet_opt *inet = inet_sk(sk);
+ struct inet_sock *inet = inet_sk(sk);
__skb_queue_purge(&sk->sk_receive_queue);
__skb_queue_purge(&sk->sk_error_queue);
#endif
}
-void inet_sock_release(struct sock *sk)
-{
- if (sk->sk_prot->destroy)
- sk->sk_prot->destroy(sk);
-
- /* Observation: when inet_sock_release is called, processes have
- * no access to socket. But net still has.
- * Step one, detach it from networking:
- *
- * A. Remove from hash tables.
- */
-
- sk->sk_prot->unhash(sk);
-
- /* In this point socket cannot receive new packets,
- * but it is possible that some packets are in flight
- * because some CPU runs receiver and did hash table lookup
- * before we unhashed socket. They will achieve receive queue
- * and will be purged by socket destructor.
- *
- * Also we still have packets pending on receive
- * queue and probably, our own packets waiting in device queues.
- * sock_destroy will drain receive queue, but transmitted
- * packets will delay socket destruction until the last reference
- * will be released.
- */
-
- sock_orphan(sk);
-
- xfrm_sk_free_policy(sk);
-
-#ifdef INET_REFCNT_DEBUG
- if (atomic_read(&sk->sk_refcnt) != 1)
- printk(KERN_DEBUG "Destruction inet %p delayed, c=%d\n",
- sk, atomic_read(&sk->sk_refcnt));
-#endif
- sock_put(sk);
-}
-
-
/*
* The routines beyond this point handle the behaviour of an AF_INET
* socket object. Mostly it punts to the subprotocols of IP to do
* the work.
*/
-/*
- * Set socket options on an inet socket.
- */
-int inet_setsockopt(struct socket *sock, int level, int optname,
- char *optval, int optlen)
-{
- struct sock *sk = sock->sk;
-
- return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen);
-}
-
-/*
- * Get a socket option on an AF_INET socket.
- *
- * FIX: POSIX 1003.1g is very ambiguous here. It states that
- * asynchronous errors should be reported by getsockopt. We assume
- * this means if you specify SO_ERROR (otherwise whats the point of it).
- */
-
-int inet_getsockopt(struct socket *sock, int level, int optname,
- char *optval, int *optlen)
-{
- struct sock *sk = sock->sk;
-
- return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen);
-}
-
/*
* Automatically bind an unbound socket.
*/
static int inet_autobind(struct sock *sk)
{
- struct inet_opt *inet;
+ struct inet_sock *inet;
/* We may need to bind the socket. */
lock_sock(sk);
inet = inet_sk(sk);
return err;
}
-static __inline__ kmem_cache_t *inet_sk_slab(int protocol)
-{
- kmem_cache_t* rc = tcp_sk_cachep;
-
- if (protocol == IPPROTO_UDP)
- rc = udp_sk_cachep;
- else if (protocol == IPPROTO_RAW)
- rc = raw4_sk_cachep;
- return rc;
-}
-
-static __inline__ int inet_sk_size(int protocol)
-{
- int rc = sizeof(struct tcp_sock);
-
- if (protocol == IPPROTO_UDP)
- rc = sizeof(struct udp_sock);
- else if (protocol == IPPROTO_RAW)
- rc = sizeof(struct raw_sock);
- return rc;
-}
-
/*
* Create an inet socket.
*/
struct sock *sk;
struct list_head *p;
struct inet_protosw *answer;
- struct inet_opt *inet;
- int err = -ENOBUFS;
+ struct inet_sock *inet;
+ struct proto *answer_prot;
+ unsigned char answer_flags;
+ char answer_no_check;
+ int err;
sock->state = SS_UNCONNECTED;
- sk = sk_alloc(PF_INET, GFP_KERNEL, inet_sk_size(protocol),
- inet_sk_slab(protocol));
- if (!sk)
- goto out;
/* Look for the requested type/protocol pair. */
answer = NULL;
err = -ESOCKTNOSUPPORT;
if (!answer)
- goto out_sk_free;
+ goto out_rcu_unlock;
err = -EPERM;
+ if ((protocol == IPPROTO_ICMP) && vx_ccaps(VXC_RAW_ICMP))
+ goto override;
if (answer->capability > 0 && !capable(answer->capability))
- goto out_sk_free;
+ goto out_rcu_unlock;
+override:
err = -EPROTONOSUPPORT;
if (!protocol)
- goto out_sk_free;
- err = 0;
+ goto out_rcu_unlock;
+
sock->ops = answer->ops;
- sk->sk_prot = answer->prot;
- sk->sk_no_check = answer->no_check;
- if (INET_PROTOSW_REUSE & answer->flags)
- sk->sk_reuse = 1;
+ answer_prot = answer->prot;
+ answer_no_check = answer->no_check;
+ answer_flags = answer->flags;
rcu_read_unlock();
+ BUG_TRAP(answer_prot->slab != NULL);
+
+ err = -ENOBUFS;
+ sk = sk_alloc(PF_INET, GFP_KERNEL, answer_prot, 1);
+ if (sk == NULL)
+ goto out;
+
+ err = 0;
+ sk->sk_no_check = answer_no_check;
+ if (INET_PROTOSW_REUSE & answer_flags)
+ sk->sk_reuse = 1;
+
inet = inet_sk(sk);
if (SOCK_RAW == sock->type) {
inet->id = 0;
sock_init_data(sock, sk);
- sk_set_owner(sk, THIS_MODULE);
sk->sk_destruct = inet_sock_destruct;
- sk->sk_zapped = 0;
sk->sk_family = PF_INET;
sk->sk_protocol = protocol;
sk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
if (sk->sk_prot->init) {
err = sk->sk_prot->init(sk);
if (err)
- inet_sock_release(sk);
+ sk_common_release(sk);
}
out:
return err;
-out_sk_free:
+out_rcu_unlock:
rcu_read_unlock();
- sk_free(sk);
goto out;
}
{
struct sockaddr_in *addr = (struct sockaddr_in *)uaddr;
struct sock *sk = sock->sk;
- struct inet_opt *inet = inet_sk(sk);
+ struct inet_sock *inet = inet_sk(sk);
unsigned short snum;
int chk_addr_ret;
int err;
+ __u32 s_addr; /* Address used for validation */
+ __u32 s_addr1; /* Address used for socket */
+ __u32 s_addr2; /* Broadcast address for the socket */
+ struct nx_info *nxi = sk->sk_nx_info;
/* If the socket has its own bind function then use it. (RAW) */
if (sk->sk_prot->bind) {
if (addr_len < sizeof(struct sockaddr_in))
goto out;
- chk_addr_ret = inet_addr_type(addr->sin_addr.s_addr);
+ s_addr = addr->sin_addr.s_addr;
+ s_addr1 = s_addr;
+ s_addr2 = 0xffffffffl;
+
+ vxdprintk(VXD_CBIT(net, 3),
+ "inet_bind(%p)* %p,%p;%lx %d.%d.%d.%d",
+ sk, sk->sk_nx_info, sk->sk_socket,
+ (sk->sk_socket?sk->sk_socket->flags:0),
+ VXD_QUAD(s_addr));
+ if (nxi) {
+ __u32 v4_bcast = nxi->v4_bcast;
+ __u32 ipv4root = nxi->ipv4[0];
+ int nbipv4 = nxi->nbipv4;
+
+ if (s_addr == 0) {
+ /* bind to any for 1-n */
+ s_addr = ipv4root;
+ s_addr1 = (nbipv4 > 1) ? 0 : s_addr;
+ s_addr2 = v4_bcast;
+ } else if (s_addr == 0x0100007f) {
+ /* rewrite localhost to ipv4root */
+ s_addr = ipv4root;
+ s_addr1 = ipv4root;
+ } else if (s_addr != v4_bcast) {
+ /* normal address bind */
+ if (!addr_in_nx_info(nxi, s_addr))
+ return -EADDRNOTAVAIL;
+ }
+ }
+ chk_addr_ret = inet_addr_type(s_addr);
+
+ vxdprintk(VXD_CBIT(net, 3),
+ "inet_bind(%p) %d.%d.%d.%d, %d.%d.%d.%d, %d.%d.%d.%d",
+ sk, VXD_QUAD(s_addr), VXD_QUAD(s_addr1), VXD_QUAD(s_addr2));
/* Not specified by any standard per-se, however it breaks too
* many applications when removed. It is unfortunate since
err = -EADDRNOTAVAIL;
if (!sysctl_ip_nonlocal_bind &&
!inet->freebind &&
- addr->sin_addr.s_addr != INADDR_ANY &&
+ s_addr != INADDR_ANY &&
chk_addr_ret != RTN_LOCAL &&
chk_addr_ret != RTN_MULTICAST &&
chk_addr_ret != RTN_BROADCAST)
if (sk->sk_state != TCP_CLOSE || inet->num)
goto out_release_sock;
- inet->rcv_saddr = inet->saddr = addr->sin_addr.s_addr;
+ inet->rcv_saddr = inet->saddr = s_addr1;
+ inet->rcv_saddr2 = s_addr2;
if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
inet->saddr = 0; /* Use device */
int *uaddr_len, int peer)
{
struct sock *sk = sock->sk;
- struct inet_opt *inet = inet_sk(sk);
+ struct inet_sock *inet = inet_sk(sk);
struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
sin->sin_family = AF_INET;
return 0;
}
-
-int inet_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
- size_t size, int flags)
-{
- struct sock *sk = sock->sk;
- int addr_len = 0;
- int err;
-
- err = sk->sk_prot->recvmsg(iocb, sk, msg, size, flags & MSG_DONTWAIT,
- flags & ~MSG_DONTWAIT, &addr_len);
- if (err >= 0)
- msg->msg_namelen = addr_len;
- return err;
-}
-
-
int inet_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
size_t size)
{
}
-ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags)
+static ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags)
{
struct sock *sk = sock->sk;
switch (cmd) {
case SIOCGSTAMP:
- err = sock_get_timestamp(sk, (struct timeval *)arg);
+ err = sock_get_timestamp(sk, (struct timeval __user *)arg);
break;
case SIOCADDRT:
case SIOCDELRT:
case SIOCRTMSG:
- err = ip_rt_ioctl(cmd, (void *)arg);
+ err = ip_rt_ioctl(cmd, (void __user *)arg);
break;
case SIOCDARP:
case SIOCGARP:
case SIOCSARP:
- err = arp_ioctl(cmd, (void *)arg);
+ err = arp_ioctl(cmd, (void __user *)arg);
break;
case SIOCGIFADDR:
case SIOCSIFADDR:
case SIOCSIFPFLAGS:
case SIOCGIFPFLAGS:
case SIOCSIFFLAGS:
- err = devinet_ioctl(cmd, (void *)arg);
+ err = devinet_ioctl(cmd, (void __user *)arg);
break;
default:
if (!sk->sk_prot->ioctl ||
(err = sk->sk_prot->ioctl(sk, cmd, arg)) ==
-ENOIOCTLCMD)
- err = dev_ioctl(cmd, (void *)arg);
+ err = dev_ioctl(cmd, (void __user *)arg);
break;
}
return err;
.ioctl = inet_ioctl,
.listen = inet_listen,
.shutdown = inet_shutdown,
- .setsockopt = inet_setsockopt,
- .getsockopt = inet_getsockopt,
+ .setsockopt = sock_common_setsockopt,
+ .getsockopt = sock_common_getsockopt,
.sendmsg = inet_sendmsg,
- .recvmsg = inet_recvmsg,
+ .recvmsg = sock_common_recvmsg,
.mmap = sock_no_mmap,
.sendpage = tcp_sendpage
};
struct proto_ops inet_dgram_ops = {
+ .family = PF_INET,
+ .owner = THIS_MODULE,
+ .release = inet_release,
+ .bind = inet_bind,
+ .connect = inet_dgram_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = sock_no_accept,
+ .getname = inet_getname,
+ .poll = udp_poll,
+ .ioctl = inet_ioctl,
+ .listen = sock_no_listen,
+ .shutdown = inet_shutdown,
+ .setsockopt = sock_common_setsockopt,
+ .getsockopt = sock_common_getsockopt,
+ .sendmsg = inet_sendmsg,
+ .recvmsg = sock_common_recvmsg,
+ .mmap = sock_no_mmap,
+ .sendpage = inet_sendpage,
+};
+
+/*
+ * For SOCK_RAW sockets; should be the same as inet_dgram_ops but without
+ * udp_poll
+ */
+static struct proto_ops inet_sockraw_ops = {
.family = PF_INET,
.owner = THIS_MODULE,
.release = inet_release,
.ioctl = inet_ioctl,
.listen = sock_no_listen,
.shutdown = inet_shutdown,
- .setsockopt = inet_setsockopt,
- .getsockopt = inet_getsockopt,
+ .setsockopt = sock_common_setsockopt,
+ .getsockopt = sock_common_getsockopt,
.sendmsg = inet_sendmsg,
- .recvmsg = inet_recvmsg,
+ .recvmsg = sock_common_recvmsg,
.mmap = sock_no_mmap,
.sendpage = inet_sendpage,
};
-struct net_proto_family inet_family_ops = {
+static struct net_proto_family inet_family_ops = {
.family = PF_INET,
.create = inet_create,
.owner = THIS_MODULE,
.type = SOCK_RAW,
.protocol = IPPROTO_IP, /* wild card */
.prot = &raw_prot,
- .ops = &inet_dgram_ops,
+ .ops = &inet_sockraw_ops,
.capability = CAP_NET_RAW,
.no_check = UDP_CSUM_DEFAULT,
.flags = INET_PROTOSW_REUSE,
spin_lock_bh(&inetsw_lock);
- if (p->type > SOCK_MAX)
+ if (p->type >= SOCK_MAX)
goto out_illegal;
/* If we are trying to override a permanent protocol, bail. */
}
#ifdef CONFIG_IP_MULTICAST
-static struct inet_protocol igmp_protocol = {
+static struct net_protocol igmp_protocol = {
.handler = igmp_rcv,
};
#endif
-static struct inet_protocol tcp_protocol = {
+static struct net_protocol tcp_protocol = {
.handler = tcp_v4_rcv,
.err_handler = tcp_v4_err,
.no_policy = 1,
};
-static struct inet_protocol udp_protocol = {
+static struct net_protocol udp_protocol = {
.handler = udp_rcv,
.err_handler = udp_err,
.no_policy = 1,
};
-static struct inet_protocol icmp_protocol = {
+static struct net_protocol icmp_protocol = {
.handler = icmp_rcv,
};
{
net_statistics[0] = alloc_percpu(struct linux_mib);
net_statistics[1] = alloc_percpu(struct linux_mib);
- ip_statistics[0] = alloc_percpu(struct ip_mib);
- ip_statistics[1] = alloc_percpu(struct ip_mib);
+ ip_statistics[0] = alloc_percpu(struct ipstats_mib);
+ ip_statistics[1] = alloc_percpu(struct ipstats_mib);
icmp_statistics[0] = alloc_percpu(struct icmp_mib);
icmp_statistics[1] = alloc_percpu(struct icmp_mib);
tcp_statistics[0] = alloc_percpu(struct tcp_mib);
return 0;
}
-int ipv4_proc_init(void);
+static int ipv4_proc_init(void);
extern void ipfrag_init(void);
static int __init inet_init(void)
struct sk_buff *dummy_skb;
struct inet_protosw *q;
struct list_head *r;
+ int rc = -EINVAL;
if (sizeof(struct inet_skb_parm) > sizeof(dummy_skb->cb)) {
printk(KERN_CRIT "%s: panic\n", __FUNCTION__);
- return -EINVAL;
+ goto out;
}
- tcp_sk_cachep = kmem_cache_create("tcp_sock",
- sizeof(struct tcp_sock), 0,
- SLAB_HWCACHE_ALIGN, 0, 0);
- udp_sk_cachep = kmem_cache_create("udp_sock",
- sizeof(struct udp_sock), 0,
- SLAB_HWCACHE_ALIGN, 0, 0);
- raw4_sk_cachep = kmem_cache_create("raw4_sock",
- sizeof(struct raw_sock), 0,
- SLAB_HWCACHE_ALIGN, 0, 0);
- if (!tcp_sk_cachep || !udp_sk_cachep || !raw4_sk_cachep)
- printk(KERN_CRIT
- "inet_init: Can't create protocol sock SLAB caches!\n");
+ rc = proto_register(&tcp_prot, 1);
+ if (rc)
+ goto out;
+
+ rc = proto_register(&udp_prot, 1);
+ if (rc)
+ goto out_unregister_tcp_proto;
+
+ rc = proto_register(&raw_prot, 1);
+ if (rc)
+ goto out_unregister_udp_proto;
+
/*
* Tell SOCKET that we are alive...
*/
ipfrag_init();
- return 0;
+ rc = 0;
+out:
+ return rc;
+out_unregister_tcp_proto:
+ proto_unregister(&tcp_prot);
+out_unregister_udp_proto:
+ proto_unregister(&udp_prot);
+ goto out;
}
module_init(inet_init);
extern int udp4_proc_init(void);
extern void udp4_proc_exit(void);
-int __init ipv4_proc_init(void)
+static int __init ipv4_proc_init(void)
{
int rc = 0;
}
#else /* CONFIG_PROC_FS */
-int __init ipv4_proc_init(void)
+static int __init ipv4_proc_init(void)
{
return 0;
}
EXPORT_SYMBOL(inet_bind);
EXPORT_SYMBOL(inet_dgram_connect);
EXPORT_SYMBOL(inet_dgram_ops);
-EXPORT_SYMBOL(inet_family_ops);
EXPORT_SYMBOL(inet_getname);
-EXPORT_SYMBOL(inet_getsockopt);
EXPORT_SYMBOL(inet_ioctl);
EXPORT_SYMBOL(inet_listen);
-EXPORT_SYMBOL(inet_recvmsg);
EXPORT_SYMBOL(inet_register_protosw);
EXPORT_SYMBOL(inet_release);
EXPORT_SYMBOL(inet_sendmsg);
-EXPORT_SYMBOL(inet_setsockopt);
EXPORT_SYMBOL(inet_shutdown);
EXPORT_SYMBOL(inet_sock_destruct);
-EXPORT_SYMBOL(inet_sock_release);
EXPORT_SYMBOL(inet_stream_connect);
EXPORT_SYMBOL(inet_stream_ops);
EXPORT_SYMBOL(inet_unregister_protosw);
EXPORT_SYMBOL(net_statistics);
-EXPORT_SYMBOL(tcp_protocol);
-EXPORT_SYMBOL(udp_protocol);
+EXPORT_SYMBOL(sysctl_ip_nonlocal_bind);
#ifdef INET_REFCNT_DEBUG
EXPORT_SYMBOL(inet_sock_nr);
git://git.onelab.eu / linux-2.6.git / blobdiff