#include <linux/config.h>
#include <linux/module.h>
#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/socket.h>
-#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/string.h>
-#include <linux/sockios.h>
#include <linux/net.h>
-#include <linux/stat.h>
-#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <net/tcp.h>
-#include <asm/system.h>
#include <asm/uaccess.h>
#include <linux/fcntl.h>
#include <linux/termios.h> /* For TIOCINQ/OUTQ */
-#include <linux/mm.h>
-#include <linux/interrupt.h>
#include <linux/notifier.h>
#include <linux/init.h>
#include <net/x25.h>
int sysctl_x25_ack_holdback_timeout = X25_DEFAULT_T2;
HLIST_HEAD(x25_list);
-rwlock_t x25_list_lock = RW_LOCK_UNLOCKED;
+DEFINE_RWLOCK(x25_list_lock);
static struct proto_ops x25_proto_ops;
/*
* Find a socket that wants to accept the Call Request we just
- * received.
+ * received. Check the full list for an address/cud match.
+ * If no cuds match return the next_best thing, an address match.
+ * Note: if a listening socket has cud set it must only get calls
+ * with matching cud.
*/
-static struct sock *x25_find_listener(struct x25_address *addr)
+static struct sock *x25_find_listener(struct x25_address *addr, struct x25_calluserdata *calluserdata)
{
struct sock *s;
+ struct sock *next_best;
struct hlist_node *node;
read_lock_bh(&x25_list_lock);
+ next_best = NULL;
sk_for_each(s, node, &x25_list)
if ((!strcmp(addr->x25_addr,
!strcmp(addr->x25_addr,
null_x25_address.x25_addr)) &&
s->sk_state == TCP_LISTEN) {
- sock_hold(s);
- goto found;
+
+ /*
+ * Found a listening socket, now check the incoming
+ * call user data vs this sockets call user data
+ */
+ if (x25_check_calluserdata(&x25_sk(s)->calluserdata, calluserdata)) {
+ sock_hold(s);
+ goto found;
+ }
+ if (x25_sk(s)->calluserdata.cudlength == 0) {
+ next_best = s;
+ }
}
+ if (next_best) {
+ s = next_best;
+ sock_hold(s);
+ goto found;
+ }
s = NULL;
found:
read_unlock_bh(&x25_list_lock);
/*
* Find a connected X.25 socket given my LCI and neighbour.
*/
-struct sock *__x25_find_socket(unsigned int lci, struct x25_neigh *nb)
+static struct sock *__x25_find_socket(unsigned int lci, struct x25_neigh *nb)
{
struct sock *s;
struct hlist_node *node;
/*
* Find a unique LCI for a given device.
*/
-unsigned int x25_new_lci(struct x25_neigh *nb)
+static unsigned int x25_new_lci(struct x25_neigh *nb)
{
unsigned int lci = 1;
struct sock *sk;
return rc;
}
+static struct proto x25_proto = {
+ .name = "X25",
+ .owner = THIS_MODULE,
+ .obj_size = sizeof(struct x25_sock),
+};
+
static struct sock *x25_alloc_socket(void)
{
- struct x25_opt *x25;
- struct sock *sk = sk_alloc(AF_X25, GFP_ATOMIC, 1, NULL);
+ struct x25_sock *x25;
+ struct sock *sk = sk_alloc(AF_X25, GFP_ATOMIC, &x25_proto, 1);
if (!sk)
goto out;
- x25 = sk->sk_protinfo = kmalloc(sizeof(*x25), GFP_ATOMIC);
- if (!x25)
- goto frees;
-
- memset(x25, 0, sizeof(*x25));
-
- x25->sk = sk;
-
sock_init_data(NULL, sk);
- sk_set_owner(sk, THIS_MODULE);
+ x25 = x25_sk(sk);
skb_queue_head_init(&x25->ack_queue);
skb_queue_head_init(&x25->fragment_queue);
skb_queue_head_init(&x25->interrupt_in_queue);
skb_queue_head_init(&x25->interrupt_out_queue);
out:
return sk;
-frees:
- sk_free(sk);
- sk = NULL;
- goto out;
}
void x25_init_timers(struct sock *sk);
static int x25_create(struct socket *sock, int protocol)
{
struct sock *sk;
- struct x25_opt *x25;
+ struct x25_sock *x25;
int rc = -ESOCKTNOSUPPORT;
if (sock->type != SOCK_SEQPACKET || protocol)
x25 = x25_sk(sk);
- sock_init_data(sock, sk);
- sk_set_owner(sk, THIS_MODULE);
+ sk->sk_socket = sock;
+ sk->sk_type = sock->type;
+ sk->sk_sleep = &sock->wait;
+ sock->sk = sk;
x25_init_timers(sk);
static struct sock *x25_make_new(struct sock *osk)
{
struct sock *sk = NULL;
- struct x25_opt *x25, *ox25;
+ struct x25_sock *x25, *ox25;
if (osk->sk_type != SOCK_SEQPACKET)
goto out;
sk->sk_protocol = osk->sk_protocol;
sk->sk_rcvbuf = osk->sk_rcvbuf;
sk->sk_sndbuf = osk->sk_sndbuf;
- sk->sk_debug = osk->sk_debug;
sk->sk_state = TCP_ESTABLISHED;
sk->sk_sleep = osk->sk_sleep;
- sk->sk_zapped = osk->sk_zapped;
sk->sk_backlog_rcv = osk->sk_backlog_rcv;
+ if (sock_flag(osk, SOCK_ZAPPED))
+ sock_set_flag(sk, SOCK_ZAPPED);
+
+ if (sock_flag(osk, SOCK_DBG))
+ sock_set_flag(sk, SOCK_DBG);
+
ox25 = x25_sk(osk);
x25->t21 = ox25->t21;
x25->t22 = ox25->t22;
static int x25_release(struct socket *sock)
{
struct sock *sk = sock->sk;
- struct x25_opt *x25;
+ struct x25_sock *x25;
if (!sk)
goto out;
struct sock *sk = sock->sk;
struct sockaddr_x25 *addr = (struct sockaddr_x25 *)uaddr;
- if (!sk->sk_zapped ||
+ if (!sock_flag(sk, SOCK_ZAPPED) ||
addr_len != sizeof(struct sockaddr_x25) ||
addr->sx25_family != AF_X25)
return -EINVAL;
x25_sk(sk)->source_addr = addr->sx25_addr;
x25_insert_socket(sk);
- sk->sk_zapped = 0;
+ sock_reset_flag(sk, SOCK_ZAPPED);
SOCK_DEBUG(sk, "x25_bind: socket is bound\n");
return 0;
int addr_len, int flags)
{
struct sock *sk = sock->sk;
- struct x25_opt *x25 = x25_sk(sk);
+ struct x25_sock *x25 = x25_sk(sk);
struct sockaddr_x25 *addr = (struct sockaddr_x25 *)uaddr;
struct x25_route *rt;
int rc = 0;
goto out_put_neigh;
rc = -EINVAL;
- if (sk->sk_zapped) /* Must bind first - autobinding does not work */
+ if (sock_flag(sk, SOCK_ZAPPED)) /* Must bind first - autobinding does not work */
goto out_put_neigh;
if (!strcmp(x25->source_addr.x25_addr, null_x25_address.x25_addr))
{
struct sockaddr_x25 *sx25 = (struct sockaddr_x25 *)uaddr;
struct sock *sk = sock->sk;
- struct x25_opt *x25 = x25_sk(sk);
+ struct x25_sock *x25 = x25_sk(sk);
if (peer) {
if (sk->sk_state != TCP_ESTABLISHED)
{
struct sock *sk;
struct sock *make;
- struct x25_opt *makex25;
+ struct x25_sock *makex25;
struct x25_address source_addr, dest_addr;
struct x25_facilities facilities;
+ struct x25_calluserdata calluserdata;
int len, rc;
/*
skb_pull(skb, x25_addr_ntoa(skb->data, &source_addr, &dest_addr));
/*
- * Find a listener for the particular address.
+ * Get the length of the facilities, skip past them for the moment
+ * get the call user data because this is needed to determine
+ * the correct listener
*/
- sk = x25_find_listener(&source_addr);
+ len = skb->data[0] + 1;
+ skb_pull(skb,len);
+
+ /*
+ * Incoming Call User Data.
+ */
+ if (skb->len >= 0) {
+ memcpy(calluserdata.cuddata, skb->data, skb->len);
+ calluserdata.cudlength = skb->len;
+ }
+
+ skb_push(skb,len);
+
+ /*
+ * Find a listener for the particular address/cud pair.
+ */
+ sk = x25_find_listener(&source_addr,&calluserdata);
/*
* We can't accept the Call Request.
*/
- if (!sk || sk->sk_ack_backlog == sk->sk_max_ack_backlog)
+ if (sk == NULL || sk_acceptq_is_full(sk))
goto out_clear_request;
/*
goto out_sock_put;
/*
- * Remove the facilities, leaving any Call User Data.
+ * Remove the facilities
*/
skb_pull(skb, len);
makex25->neighbour = nb;
makex25->facilities = facilities;
makex25->vc_facil_mask = x25_sk(sk)->vc_facil_mask;
+ makex25->calluserdata = calluserdata;
x25_write_internal(make, X25_CALL_ACCEPTED);
- /*
- * Incoming Call User Data.
- */
- if (skb->len >= 0) {
- memcpy(makex25->calluserdata.cuddata, skb->data, skb->len);
- makex25->calluserdata.cudlength = skb->len;
- }
-
makex25->state = X25_STATE_3;
sk->sk_ack_backlog++;
struct msghdr *msg, size_t len)
{
struct sock *sk = sock->sk;
- struct x25_opt *x25 = x25_sk(sk);
+ struct x25_sock *x25 = x25_sk(sk);
struct sockaddr_x25 *usx25 = (struct sockaddr_x25 *)msg->msg_name;
struct sockaddr_x25 sx25;
struct sk_buff *skb;
goto out;
rc = -EADDRNOTAVAIL;
- if (sk->sk_zapped)
+ if (sock_flag(sk, SOCK_ZAPPED))
goto out;
rc = -EPIPE;
int flags)
{
struct sock *sk = sock->sk;
- struct x25_opt *x25 = x25_sk(sk);
+ struct x25_sock *x25 = x25_sk(sk);
struct sockaddr_x25 *sx25 = (struct sockaddr_x25 *)msg->msg_name;
size_t copied;
int qbit;
static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
- struct x25_opt *x25 = x25_sk(sk);
+ struct x25_sock *x25 = x25_sk(sk);
void __user *argp = (void __user *)arg;
int rc;
return rc;
}
-struct net_proto_family x25_family_ops = {
+static struct net_proto_family x25_family_ops = {
.family = AF_X25,
.create = x25_create,
.owner = THIS_MODULE,
.func = x25_lapb_receive_frame,
};
-struct notifier_block x25_dev_notifier = {
+static struct notifier_block x25_dev_notifier = {
.notifier_call = x25_device_event,
};
static int __init x25_init(void)
{
+ int rc = proto_register(&x25_proto, 0);
+
+ if (rc != 0)
+ goto out;
+
sock_register(&x25_family_ops);
dev_add_pack(&x25_packet_type);
x25_register_sysctl();
#endif
x25_proc_init();
- return 0;
+out:
+ return rc;
}
module_init(x25_init);
dev_remove_pack(&x25_packet_type);
sock_unregister(AF_X25);
+ proto_unregister(&x25_proto);
}
module_exit(x25_exit);
git://git.onelab.eu / linux-2.6.git / blobdiff