URL https://opencores.org/ocsvn/or1k_soc_on_altera_embedded_dev_kit/or1k_soc_on_altera_embedded_dev_kit/trunk
Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [net/] [rose/] [af_rose.c] - Blame information for rev 3

Details | Compare with Previous | View Log

/*
 * This program 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 of the License, or
 * (at your option) any later version.
 *
 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
 * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net)
 * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi)
 */
 
#include <linux/capability.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.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/spinlock.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/stat.h>
#include <net/net_namespace.h>
#include <net/ax25.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <linux/fcntl.h>
#include <linux/termios.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/notifier.h>
#include <net/rose.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <net/tcp_states.h>
#include <net/ip.h>
#include <net/arp.h>
 
static int rose_ndevs = 10;
 
int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
int sysctl_rose_call_request_timeout    = ROSE_DEFAULT_T1;
int sysctl_rose_reset_request_timeout   = ROSE_DEFAULT_T2;
int sysctl_rose_clear_request_timeout   = ROSE_DEFAULT_T3;
int sysctl_rose_no_activity_timeout     = ROSE_DEFAULT_IDLE;
int sysctl_rose_ack_hold_back_timeout   = ROSE_DEFAULT_HB;
int sysctl_rose_routing_control         = ROSE_DEFAULT_ROUTING;
int sysctl_rose_link_fail_timeout       = ROSE_DEFAULT_FAIL_TIMEOUT;
int sysctl_rose_maximum_vcs             = ROSE_DEFAULT_MAXVC;
int sysctl_rose_window_size             = ROSE_DEFAULT_WINDOW_SIZE;
 
static HLIST_HEAD(rose_list);
static DEFINE_SPINLOCK(rose_list_lock);
 
static struct proto_ops rose_proto_ops;
 
ax25_address rose_callsign;
 
/*
 * ROSE network devices are virtual network devices encapsulating ROSE
 * frames into AX.25 which will be sent through an AX.25 device, so form a
 * special "super class" of normal net devices; split their locks off into a
 * separate class since they always nest.
 */
static struct lock_class_key rose_netdev_xmit_lock_key;
 
/*
 *      Convert a ROSE address into text.
 */
const char *rose2asc(const rose_address *addr)
{
        static char buffer[11];
 
        if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
            addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
            addr->rose_addr[4] == 0x00) {
                strcpy(buffer, "*");
        } else {
                sprintf(buffer, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
                                                addr->rose_addr[1] & 0xFF,
                                                addr->rose_addr[2] & 0xFF,
                                                addr->rose_addr[3] & 0xFF,
                                                addr->rose_addr[4] & 0xFF);
        }
 
        return buffer;
}
 
/*
 *      Compare two ROSE addresses, 0 == equal.
 */
int rosecmp(rose_address *addr1, rose_address *addr2)
{
        int i;
 
        for (i = 0; i < 5; i++)
                if (addr1->rose_addr[i] != addr2->rose_addr[i])
                        return 1;
 
        return 0;
}
 
/*
 *      Compare two ROSE addresses for only mask digits, 0 == equal.
 */
int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
{
        int i, j;
 
        if (mask > 10)
                return 1;
 
        for (i = 0; i < mask; i++) {
                j = i / 2;
 
                if ((i % 2) != 0) {
                        if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F))
                                return 1;
                } else {
                        if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0))
                                return 1;
                }
        }
 
        return 0;
}
 
/*
 *      Socket removal during an interrupt is now safe.
 */
static void rose_remove_socket(struct sock *sk)
{
        spin_lock_bh(&rose_list_lock);
        sk_del_node_init(sk);
        spin_unlock_bh(&rose_list_lock);
}
 
/*
 *      Kill all bound sockets on a broken link layer connection to a
 *      particular neighbour.
 */
void rose_kill_by_neigh(struct rose_neigh *neigh)
{
        struct sock *s;
        struct hlist_node *node;
 
        spin_lock_bh(&rose_list_lock);
        sk_for_each(s, node, &rose_list) {
                struct rose_sock *rose = rose_sk(s);
 
                if (rose->neighbour == neigh) {
                        rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
                        rose->neighbour->use--;
                        rose->neighbour = NULL;
                }
        }
        spin_unlock_bh(&rose_list_lock);
}
 
/*
 *      Kill all bound sockets on a dropped device.
 */
static void rose_kill_by_device(struct net_device *dev)
{
        struct sock *s;
        struct hlist_node *node;
 
        spin_lock_bh(&rose_list_lock);
        sk_for_each(s, node, &rose_list) {
                struct rose_sock *rose = rose_sk(s);
 
                if (rose->device == dev) {
                        rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
                        rose->neighbour->use--;
                        rose->device = NULL;
                }
        }
        spin_unlock_bh(&rose_list_lock);
}
 
/*
 *      Handle device status changes.
 */
static int rose_device_event(struct notifier_block *this, unsigned long event,
        void *ptr)
{
        struct net_device *dev = (struct net_device *)ptr;
 
        if (dev->nd_net != &init_net)
                return NOTIFY_DONE;
 
        if (event != NETDEV_DOWN)
                return NOTIFY_DONE;
 
        switch (dev->type) {
        case ARPHRD_ROSE:
                rose_kill_by_device(dev);
                break;
        case ARPHRD_AX25:
                rose_link_device_down(dev);
                rose_rt_device_down(dev);
                break;
        }
 
        return NOTIFY_DONE;
}
 
/*
 *      Add a socket to the bound sockets list.
 */
static void rose_insert_socket(struct sock *sk)
{
 
        spin_lock_bh(&rose_list_lock);
        sk_add_node(sk, &rose_list);
        spin_unlock_bh(&rose_list_lock);
}
 
/*
 *      Find a socket that wants to accept the Call Request we just
 *      received.
 */
static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
{
        struct sock *s;
        struct hlist_node *node;
 
        spin_lock_bh(&rose_list_lock);
        sk_for_each(s, node, &rose_list) {
                struct rose_sock *rose = rose_sk(s);
 
                if (!rosecmp(&rose->source_addr, addr) &&
                    !ax25cmp(&rose->source_call, call) &&
                    !rose->source_ndigis && s->sk_state == TCP_LISTEN)
                        goto found;
        }
 
        sk_for_each(s, node, &rose_list) {
                struct rose_sock *rose = rose_sk(s);
 
                if (!rosecmp(&rose->source_addr, addr) &&
                    !ax25cmp(&rose->source_call, &null_ax25_address) &&
                    s->sk_state == TCP_LISTEN)
                        goto found;
        }
        s = NULL;
found:
        spin_unlock_bh(&rose_list_lock);
        return s;
}
 
/*
 *      Find a connected ROSE socket given my LCI and device.
 */
struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
{
        struct sock *s;
        struct hlist_node *node;
 
        spin_lock_bh(&rose_list_lock);
        sk_for_each(s, node, &rose_list) {
                struct rose_sock *rose = rose_sk(s);
 
                if (rose->lci == lci && rose->neighbour == neigh)
                        goto found;
        }
        s = NULL;
found:
        spin_unlock_bh(&rose_list_lock);
        return s;
}
 
/*
 *      Find a unique LCI for a given device.
 */
unsigned int rose_new_lci(struct rose_neigh *neigh)
{
        int lci;
 
        if (neigh->dce_mode) {
                for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
                        if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
                                return lci;
        } else {
                for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
                        if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
                                return lci;
        }
 
        return 0;
}
 
/*
 *      Deferred destroy.
 */
void rose_destroy_socket(struct sock *);
 
/*
 *      Handler for deferred kills.
 */
static void rose_destroy_timer(unsigned long data)
{
        rose_destroy_socket((struct sock *)data);
}
 
/*
 *      This is called from user mode and the timers. Thus it protects itself
 *      against interrupt users but doesn't worry about being called during
 *      work.  Once it is removed from the queue no interrupt or bottom half
 *      will touch it and we are (fairly 8-) ) safe.
 */
void rose_destroy_socket(struct sock *sk)
{
        struct sk_buff *skb;
 
        rose_remove_socket(sk);
        rose_stop_heartbeat(sk);
        rose_stop_idletimer(sk);
        rose_stop_timer(sk);
 
        rose_clear_queues(sk);          /* Flush the queues */
 
        while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
                if (skb->sk != sk) {    /* A pending connection */
                        /* Queue the unaccepted socket for death */
                        sock_set_flag(skb->sk, SOCK_DEAD);
                        rose_start_heartbeat(skb->sk);
                        rose_sk(skb->sk)->state = ROSE_STATE_0;
                }
 
                kfree_skb(skb);
        }
 
        if (atomic_read(&sk->sk_wmem_alloc) ||
            atomic_read(&sk->sk_rmem_alloc)) {
                /* Defer: outstanding buffers */
                init_timer(&sk->sk_timer);
                sk->sk_timer.expires  = jiffies + 10 * HZ;
                sk->sk_timer.function = rose_destroy_timer;
                sk->sk_timer.data     = (unsigned long)sk;
                add_timer(&sk->sk_timer);
        } else
                sock_put(sk);
}
 
/*
 *      Handling for system calls applied via the various interfaces to a
 *      ROSE socket object.
 */
 
static int rose_setsockopt(struct socket *sock, int level, int optname,
        char __user *optval, int optlen)
{
        struct sock *sk = sock->sk;
        struct rose_sock *rose = rose_sk(sk);
        int opt;
 
        if (level != SOL_ROSE)
                return -ENOPROTOOPT;
 
        if (optlen < sizeof(int))
                return -EINVAL;
 
        if (get_user(opt, (int __user *)optval))
                return -EFAULT;
 
        switch (optname) {
        case ROSE_DEFER:
                rose->defer = opt ? 1 : 0;
                return 0;
 
        case ROSE_T1:
                if (opt < 1)
                        return -EINVAL;
                rose->t1 = opt * HZ;
                return 0;
 
        case ROSE_T2:
                if (opt < 1)
                        return -EINVAL;
                rose->t2 = opt * HZ;
                return 0;
 
        case ROSE_T3:
                if (opt < 1)
                        return -EINVAL;
                rose->t3 = opt * HZ;
                return 0;
 
        case ROSE_HOLDBACK:
                if (opt < 1)
                        return -EINVAL;
                rose->hb = opt * HZ;
                return 0;
 
        case ROSE_IDLE:
                if (opt < 0)
                        return -EINVAL;
                rose->idle = opt * 60 * HZ;
                return 0;
 
        case ROSE_QBITINCL:
                rose->qbitincl = opt ? 1 : 0;
                return 0;
 
        default:
                return -ENOPROTOOPT;
        }
}
 
static int rose_getsockopt(struct socket *sock, int level, int optname,
        char __user *optval, int __user *optlen)
{
        struct sock *sk = sock->sk;
        struct rose_sock *rose = rose_sk(sk);
        int val = 0;
        int len;
 
        if (level != SOL_ROSE)
                return -ENOPROTOOPT;
 
        if (get_user(len, optlen))
                return -EFAULT;
 
        if (len < 0)
                return -EINVAL;
 
        switch (optname) {
        case ROSE_DEFER:
                val = rose->defer;
                break;
 
        case ROSE_T1:
                val = rose->t1 / HZ;
                break;
 
        case ROSE_T2:
                val = rose->t2 / HZ;
                break;
 
        case ROSE_T3:
                val = rose->t3 / HZ;
                break;
 
        case ROSE_HOLDBACK:
                val = rose->hb / HZ;
                break;
 
        case ROSE_IDLE:
                val = rose->idle / (60 * HZ);
                break;
 
        case ROSE_QBITINCL:
                val = rose->qbitincl;
                break;
 
        default:
                return -ENOPROTOOPT;
        }
 
        len = min_t(unsigned int, len, sizeof(int));
 
        if (put_user(len, optlen))
                return -EFAULT;
 
        return copy_to_user(optval, &val, len) ? -EFAULT : 0;
}
 
static int rose_listen(struct socket *sock, int backlog)
{
        struct sock *sk = sock->sk;
 
        if (sk->sk_state != TCP_LISTEN) {
                struct rose_sock *rose = rose_sk(sk);
 
                rose->dest_ndigis = 0;
                memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
                memset(&rose->dest_call, 0, AX25_ADDR_LEN);
                memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
                sk->sk_max_ack_backlog = backlog;
                sk->sk_state           = TCP_LISTEN;
                return 0;
        }
 
        return -EOPNOTSUPP;
}
 
static struct proto rose_proto = {
        .name     = "ROSE",
        .owner    = THIS_MODULE,
        .obj_size = sizeof(struct rose_sock),
};
 
static int rose_create(struct net *net, struct socket *sock, int protocol)
{
        struct sock *sk;
        struct rose_sock *rose;
 
        if (net != &init_net)
                return -EAFNOSUPPORT;
 
        if (sock->type != SOCK_SEQPACKET || protocol != 0)
                return -ESOCKTNOSUPPORT;
 
        sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
        if (sk == NULL)
                return -ENOMEM;
 
        rose = rose_sk(sk);
 
        sock_init_data(sock, sk);
 
        skb_queue_head_init(&rose->ack_queue);
#ifdef M_BIT
        skb_queue_head_init(&rose->frag_queue);
        rose->fraglen    = 0;
#endif
 
        sock->ops    = &rose_proto_ops;
        sk->sk_protocol = protocol;
 
        init_timer(&rose->timer);
        init_timer(&rose->idletimer);
 
        rose->t1   = msecs_to_jiffies(sysctl_rose_call_request_timeout);
        rose->t2   = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
        rose->t3   = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
        rose->hb   = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
        rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
 
        rose->state = ROSE_STATE_0;
 
        return 0;
}
 
static struct sock *rose_make_new(struct sock *osk)
{
        struct sock *sk;
        struct rose_sock *rose, *orose;
 
        if (osk->sk_type != SOCK_SEQPACKET)
                return NULL;
 
        sk = sk_alloc(osk->sk_net, PF_ROSE, GFP_ATOMIC, &rose_proto);
        if (sk == NULL)
                return NULL;
 
        rose = rose_sk(sk);
 
        sock_init_data(NULL, sk);
 
        skb_queue_head_init(&rose->ack_queue);
#ifdef M_BIT
        skb_queue_head_init(&rose->frag_queue);
        rose->fraglen  = 0;
#endif
 
        sk->sk_type     = osk->sk_type;
        sk->sk_socket   = osk->sk_socket;
        sk->sk_priority = osk->sk_priority;
        sk->sk_protocol = osk->sk_protocol;
        sk->sk_rcvbuf   = osk->sk_rcvbuf;
        sk->sk_sndbuf   = osk->sk_sndbuf;
        sk->sk_state    = TCP_ESTABLISHED;
        sk->sk_sleep    = osk->sk_sleep;
        sock_copy_flags(sk, osk);
 
        init_timer(&rose->timer);
        init_timer(&rose->idletimer);
 
        orose           = rose_sk(osk);
        rose->t1        = orose->t1;
        rose->t2        = orose->t2;
        rose->t3        = orose->t3;
        rose->hb        = orose->hb;
        rose->idle      = orose->idle;
        rose->defer     = orose->defer;
        rose->device    = orose->device;
        rose->qbitincl  = orose->qbitincl;
 
        return sk;
}
 
static int rose_release(struct socket *sock)
{
        struct sock *sk = sock->sk;
        struct rose_sock *rose;
 
        if (sk == NULL) return 0;
 
        rose = rose_sk(sk);
 
        switch (rose->state) {
        case ROSE_STATE_0:
                rose_disconnect(sk, 0, -1, -1);
                rose_destroy_socket(sk);
                break;
 
        case ROSE_STATE_2:
                rose->neighbour->use--;
                rose_disconnect(sk, 0, -1, -1);
                rose_destroy_socket(sk);
                break;
 
        case ROSE_STATE_1:
        case ROSE_STATE_3:
        case ROSE_STATE_4:
        case ROSE_STATE_5:
                rose_clear_queues(sk);
                rose_stop_idletimer(sk);
                rose_write_internal(sk, ROSE_CLEAR_REQUEST);
                rose_start_t3timer(sk);
                rose->state  = ROSE_STATE_2;
                sk->sk_state    = TCP_CLOSE;
                sk->sk_shutdown |= SEND_SHUTDOWN;
                sk->sk_state_change(sk);
                sock_set_flag(sk, SOCK_DEAD);
                sock_set_flag(sk, SOCK_DESTROY);
                break;
 
        default:
                break;
        }
 
        sock->sk = NULL;
 
        return 0;
}
 
static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
{
        struct sock *sk = sock->sk;
        struct rose_sock *rose = rose_sk(sk);
        struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
        struct net_device *dev;
        ax25_address *source;
        ax25_uid_assoc *user;
        int n;
 
        if (!sock_flag(sk, SOCK_ZAPPED))
                return -EINVAL;
 
        if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
                return -EINVAL;
 
        if (addr->srose_family != AF_ROSE)
                return -EINVAL;
 
        if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
                return -EINVAL;
 
        if (addr->srose_ndigis > ROSE_MAX_DIGIS)
                return -EINVAL;
 
        if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) {
                SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n");
                return -EADDRNOTAVAIL;
        }
 
        source = &addr->srose_call;
 
        user = ax25_findbyuid(current->euid);
        if (user) {
                rose->source_call = user->call;
                ax25_uid_put(user);
        } else {
                if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
                        return -EACCES;
                rose->source_call   = *source;
        }
 
        rose->source_addr   = addr->srose_addr;
        rose->device        = dev;
        rose->source_ndigis = addr->srose_ndigis;
 
        if (addr_len == sizeof(struct full_sockaddr_rose)) {
                struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
                for (n = 0 ; n < addr->srose_ndigis ; n++)
                        rose->source_digis[n] = full_addr->srose_digis[n];
        } else {
                if (rose->source_ndigis == 1) {
                        rose->source_digis[0] = addr->srose_digi;
                }
        }
 
        rose_insert_socket(sk);
 
        sock_reset_flag(sk, SOCK_ZAPPED);
        SOCK_DEBUG(sk, "ROSE: socket is bound\n");
        return 0;
}
 
static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
{
        struct sock *sk = sock->sk;
        struct rose_sock *rose = rose_sk(sk);
        struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
        unsigned char cause, diagnostic;
        struct net_device *dev;
        ax25_uid_assoc *user;
        int n, err = 0;
 
        if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
                return -EINVAL;
 
        if (addr->srose_family != AF_ROSE)
                return -EINVAL;
 
        if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
                return -EINVAL;
 
        if (addr->srose_ndigis > ROSE_MAX_DIGIS)
                return -EINVAL;
 
        /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
        if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
                return -EINVAL;
 
        lock_sock(sk);
 
        if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
                /* Connect completed during a ERESTARTSYS event */
                sock->state = SS_CONNECTED;
                goto out_release;
        }
 
        if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
                sock->state = SS_UNCONNECTED;
                err = -ECONNREFUSED;
                goto out_release;
        }
 
        if (sk->sk_state == TCP_ESTABLISHED) {
                /* No reconnect on a seqpacket socket */
                err = -EISCONN;
                goto out_release;
        }
 
        sk->sk_state   = TCP_CLOSE;
        sock->state = SS_UNCONNECTED;
 
        rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
                                         &diagnostic);
        if (!rose->neighbour)
                return -ENETUNREACH;
 
        rose->lci = rose_new_lci(rose->neighbour);
        if (!rose->lci) {
                err = -ENETUNREACH;
                goto out_release;
        }
 
        if (sock_flag(sk, SOCK_ZAPPED)) {       /* Must bind first - autobinding in this may or may not work */
                sock_reset_flag(sk, SOCK_ZAPPED);
 
                if ((dev = rose_dev_first()) == NULL) {
                        err = -ENETUNREACH;
                        goto out_release;
                }
 
                user = ax25_findbyuid(current->euid);
                if (!user) {
                        err = -EINVAL;
                        goto out_release;
                }
 
                memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
                rose->source_call = user->call;
                rose->device      = dev;
                ax25_uid_put(user);
 
                rose_insert_socket(sk);         /* Finish the bind */
        }
rose_try_next_neigh:
        rose->dest_addr   = addr->srose_addr;
        rose->dest_call   = addr->srose_call;
        rose->rand        = ((long)rose & 0xFFFF) + rose->lci;
        rose->dest_ndigis = addr->srose_ndigis;
 
        if (addr_len == sizeof(struct full_sockaddr_rose)) {
                struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
                for (n = 0 ; n < addr->srose_ndigis ; n++)
                        rose->dest_digis[n] = full_addr->srose_digis[n];
        } else {
                if (rose->dest_ndigis == 1) {
                        rose->dest_digis[0] = addr->srose_digi;
                }
        }
 
        /* Move to connecting socket, start sending Connect Requests */
        sock->state   = SS_CONNECTING;
        sk->sk_state     = TCP_SYN_SENT;
 
        rose->state = ROSE_STATE_1;
 
        rose->neighbour->use++;
 
        rose_write_internal(sk, ROSE_CALL_REQUEST);
        rose_start_heartbeat(sk);
        rose_start_t1timer(sk);
 
        /* Now the loop */
        if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
                err = -EINPROGRESS;
                goto out_release;
        }
 
        /*
         * A Connect Ack with Choke or timeout or failed routing will go to
         * closed.
         */
        if (sk->sk_state == TCP_SYN_SENT) {
                DEFINE_WAIT(wait);
 
                for (;;) {
                        prepare_to_wait(sk->sk_sleep, &wait,
                                        TASK_INTERRUPTIBLE);
                        if (sk->sk_state != TCP_SYN_SENT)
                                break;
                        if (!signal_pending(current)) {
                                release_sock(sk);
                                schedule();
                                lock_sock(sk);
                                continue;
                        }
                        err = -ERESTARTSYS;
                        break;
                }
                finish_wait(sk->sk_sleep, &wait);
 
                if (err)
                        goto out_release;
        }
 
        if (sk->sk_state != TCP_ESTABLISHED) {
        /* Try next neighbour */
                rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, &diagnostic);
                if (rose->neighbour)
                        goto rose_try_next_neigh;
 
                /* No more neighbours */
                sock->state = SS_UNCONNECTED;
                err = sock_error(sk);   /* Always set at this point */
                goto out_release;
        }
 
        sock->state = SS_CONNECTED;
 
out_release:
        release_sock(sk);
 
        return err;
}
 
static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
{
        struct sk_buff *skb;
        struct sock *newsk;
        DEFINE_WAIT(wait);
        struct sock *sk;
        int err = 0;
 
        if ((sk = sock->sk) == NULL)
                return -EINVAL;
 
        lock_sock(sk);
        if (sk->sk_type != SOCK_SEQPACKET) {
                err = -EOPNOTSUPP;
                goto out_release;
        }
 
        if (sk->sk_state != TCP_LISTEN) {
                err = -EINVAL;
                goto out_release;
        }
 
        /*
         *      The write queue this time is holding sockets ready to use
         *      hooked into the SABM we saved
         */
        for (;;) {
                prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 
                skb = skb_dequeue(&sk->sk_receive_queue);
                if (skb)
                        break;
 
                if (flags & O_NONBLOCK) {
                        err = -EWOULDBLOCK;
                        break;
                }
                if (!signal_pending(current)) {
                        release_sock(sk);
                        schedule();
                        lock_sock(sk);
                        continue;
                }
                err = -ERESTARTSYS;
                break;
        }
        finish_wait(sk->sk_sleep, &wait);
        if (err)
                goto out_release;
 
        newsk = skb->sk;
        newsk->sk_socket = newsock;
        newsk->sk_sleep = &newsock->wait;
 
        /* Now attach up the new socket */
        skb->sk = NULL;
        kfree_skb(skb);
        sk->sk_ack_backlog--;
        newsock->sk = newsk;
 
out_release:
        release_sock(sk);
 
        return err;
}
 
static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
        int *uaddr_len, int peer)
{
        struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
        struct sock *sk = sock->sk;
        struct rose_sock *rose = rose_sk(sk);
        int n;
 
        if (peer != 0) {
                if (sk->sk_state != TCP_ESTABLISHED)
                        return -ENOTCONN;
                srose->srose_family = AF_ROSE;
                srose->srose_addr   = rose->dest_addr;
                srose->srose_call   = rose->dest_call;
                srose->srose_ndigis = rose->dest_ndigis;
                for (n = 0; n < rose->dest_ndigis; n++)
                        srose->srose_digis[n] = rose->dest_digis[n];
        } else {
                srose->srose_family = AF_ROSE;
                srose->srose_addr   = rose->source_addr;
                srose->srose_call   = rose->source_call;
                srose->srose_ndigis = rose->source_ndigis;
                for (n = 0; n < rose->source_ndigis; n++)
                        srose->srose_digis[n] = rose->source_digis[n];
        }
 
        *uaddr_len = sizeof(struct full_sockaddr_rose);
        return 0;
}
 
int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
{
        struct sock *sk;
        struct sock *make;
        struct rose_sock *make_rose;
        struct rose_facilities_struct facilities;
        int n, len;
 
        skb->sk = NULL;         /* Initially we don't know who it's for */
 
        /*
         *      skb->data points to the rose frame start
         */
        memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
 
        len  = (((skb->data[3] >> 4) & 0x0F) + 1) / 2;
        len += (((skb->data[3] >> 0) & 0x0F) + 1) / 2;
        if (!rose_parse_facilities(skb->data + len + 4, &facilities)) {
                rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
                return 0;
        }
 
        sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
 
        /*
         * We can't accept the Call Request.
         */
        if (sk == NULL || sk_acceptq_is_full(sk) ||
            (make = rose_make_new(sk)) == NULL) {
                rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
                return 0;
        }
 
        skb->sk     = make;
        make->sk_state = TCP_ESTABLISHED;
        make_rose = rose_sk(make);
 
        make_rose->lci           = lci;
        make_rose->dest_addr     = facilities.dest_addr;
        make_rose->dest_call     = facilities.dest_call;
        make_rose->dest_ndigis   = facilities.dest_ndigis;
        for (n = 0 ; n < facilities.dest_ndigis ; n++)
                make_rose->dest_digis[n] = facilities.dest_digis[n];
        make_rose->source_addr   = facilities.source_addr;
        make_rose->source_call   = facilities.source_call;
        make_rose->source_ndigis = facilities.source_ndigis;
        for (n = 0 ; n < facilities.source_ndigis ; n++)
                make_rose->source_digis[n]= facilities.source_digis[n];
        make_rose->neighbour     = neigh;
        make_rose->device        = dev;
        make_rose->facilities    = facilities;
 
        make_rose->neighbour->use++;
 
        if (rose_sk(sk)->defer) {
                make_rose->state = ROSE_STATE_5;
        } else {
                rose_write_internal(make, ROSE_CALL_ACCEPTED);
                make_rose->state = ROSE_STATE_3;
                rose_start_idletimer(make);
        }
 
        make_rose->condition = 0x00;
        make_rose->vs        = 0;
        make_rose->va        = 0;
        make_rose->vr        = 0;
        make_rose->vl        = 0;
        sk->sk_ack_backlog++;
 
        rose_insert_socket(make);
 
        skb_queue_head(&sk->sk_receive_queue, skb);
 
        rose_start_heartbeat(make);
 
        if (!sock_flag(sk, SOCK_DEAD))
                sk->sk_data_ready(sk, skb->len);
 
        return 1;
}
 
static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
                        struct msghdr *msg, size_t len)
{
        struct sock *sk = sock->sk;
        struct rose_sock *rose = rose_sk(sk);
        struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
        int err;
        struct full_sockaddr_rose srose;
        struct sk_buff *skb;
        unsigned char *asmptr;
        int n, size, qbit = 0;
 
        if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
                return -EINVAL;
 
        if (sock_flag(sk, SOCK_ZAPPED))
                return -EADDRNOTAVAIL;
 
        if (sk->sk_shutdown & SEND_SHUTDOWN) {
                send_sig(SIGPIPE, current, 0);
                return -EPIPE;
        }
 
        if (rose->neighbour == NULL || rose->device == NULL)
                return -ENETUNREACH;
 
        if (usrose != NULL) {
                if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
                        return -EINVAL;
                memset(&srose, 0, sizeof(struct full_sockaddr_rose));
                memcpy(&srose, usrose, msg->msg_namelen);
                if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
                    ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
                        return -EISCONN;
                if (srose.srose_ndigis != rose->dest_ndigis)
                        return -EISCONN;
                if (srose.srose_ndigis == rose->dest_ndigis) {
                        for (n = 0 ; n < srose.srose_ndigis ; n++)
                                if (ax25cmp(&rose->dest_digis[n],
                                            &srose.srose_digis[n]))
                                        return -EISCONN;
                }
                if (srose.srose_family != AF_ROSE)
                        return -EINVAL;
        } else {
                if (sk->sk_state != TCP_ESTABLISHED)
                        return -ENOTCONN;
 
                srose.srose_family = AF_ROSE;
                srose.srose_addr   = rose->dest_addr;
                srose.srose_call   = rose->dest_call;
                srose.srose_ndigis = rose->dest_ndigis;
                for (n = 0 ; n < rose->dest_ndigis ; n++)
                        srose.srose_digis[n] = rose->dest_digis[n];
        }
 
        SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n");
 
        /* Build a packet */
        SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n");
        size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
 
        if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
                return err;
 
        skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
 
        /*
         *      Put the data on the end
         */
        SOCK_DEBUG(sk, "ROSE: Appending user data\n");
 
        skb_reset_transport_header(skb);
        skb_put(skb, len);
 
        err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
        if (err) {
                kfree_skb(skb);
                return err;
        }
 
        /*
         *      If the Q BIT Include socket option is in force, the first
         *      byte of the user data is the logical value of the Q Bit.
         */
        if (rose->qbitincl) {
                qbit = skb->data[0];
                skb_pull(skb, 1);
        }
 
        /*
         *      Push down the ROSE header
         */
        asmptr = skb_push(skb, ROSE_MIN_LEN);
 
        SOCK_DEBUG(sk, "ROSE: Building Network Header.\n");
 
        /* Build a ROSE Network header */
        asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
        asmptr[1] = (rose->lci >> 0) & 0xFF;
        asmptr[2] = ROSE_DATA;
 
        if (qbit)
                asmptr[0] |= ROSE_Q_BIT;
 
        SOCK_DEBUG(sk, "ROSE: Built header.\n");
 
        SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n");
 
        if (sk->sk_state != TCP_ESTABLISHED) {
                kfree_skb(skb);
                return -ENOTCONN;
        }
 
#ifdef M_BIT
#define ROSE_PACLEN (256-ROSE_MIN_LEN)
        if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
                unsigned char header[ROSE_MIN_LEN];
                struct sk_buff *skbn;
                int frontlen;
                int lg;
 
                /* Save a copy of the Header */
                skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
                skb_pull(skb, ROSE_MIN_LEN);
 
                frontlen = skb_headroom(skb);
 
                while (skb->len > 0) {
                        if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
                                kfree_skb(skb);
                                return err;
                        }
 
                        skbn->sk   = sk;
                        skbn->free = 1;
                        skbn->arp  = 1;
 
                        skb_reserve(skbn, frontlen);
 
                        lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
 
                        /* Copy the user data */
                        skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
                        skb_pull(skb, lg);
 
                        /* Duplicate the Header */
                        skb_push(skbn, ROSE_MIN_LEN);
                        skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
 
                        if (skb->len > 0)
                                skbn->data[2] |= M_BIT;
 
                        skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
                }
 
                skb->free = 1;
                kfree_skb(skb);
        } else {
                skb_queue_tail(&sk->sk_write_queue, skb);               /* Throw it on the queue */
        }
#else
        skb_queue_tail(&sk->sk_write_queue, skb);       /* Shove it onto the queue */
#endif
 
        rose_kick(sk);
 
        return len;
}
 
 
static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
                        struct msghdr *msg, size_t size, int flags)
{
        struct sock *sk = sock->sk;
        struct rose_sock *rose = rose_sk(sk);
        struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
        size_t copied;
        unsigned char *asmptr;
        struct sk_buff *skb;
        int n, er, qbit;
 
        /*
         * This works for seqpacket too. The receiver has ordered the queue for
         * us! We do one quick check first though
         */
        if (sk->sk_state != TCP_ESTABLISHED)
                return -ENOTCONN;
 
        /* Now we can treat all alike */
        if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
                return er;
 
        qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
 
        skb_pull(skb, ROSE_MIN_LEN);
 
        if (rose->qbitincl) {
                asmptr  = skb_push(skb, 1);
                *asmptr = qbit;
        }
 
        skb_reset_transport_header(skb);
        copied     = skb->len;
 
        if (copied > size) {
                copied = size;
                msg->msg_flags |= MSG_TRUNC;
        }
 
        skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
 
        if (srose != NULL) {
                srose->srose_family = AF_ROSE;
                srose->srose_addr   = rose->dest_addr;
                srose->srose_call   = rose->dest_call;
                srose->srose_ndigis = rose->dest_ndigis;
                if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
                        struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
                        for (n = 0 ; n < rose->dest_ndigis ; n++)
                                full_srose->srose_digis[n] = rose->dest_digis[n];
                        msg->msg_namelen = sizeof(struct full_sockaddr_rose);
                } else {
                        if (rose->dest_ndigis >= 1) {
                                srose->srose_ndigis = 1;
                                srose->srose_digi = rose->dest_digis[0];
                        }
                        msg->msg_namelen = sizeof(struct sockaddr_rose);
                }
        }
 
        skb_free_datagram(sk, skb);
 
        return copied;
}
 
 
static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
        struct sock *sk = sock->sk;
        struct rose_sock *rose = rose_sk(sk);
        void __user *argp = (void __user *)arg;
 
        switch (cmd) {
        case TIOCOUTQ: {
                long amount;
                amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
                if (amount < 0)
                        amount = 0;
                return put_user(amount, (unsigned int __user *) argp);
        }
 
        case TIOCINQ: {
                struct sk_buff *skb;
                long amount = 0L;
                /* These two are safe on a single CPU system as only user tasks fiddle here */
                if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
                        amount = skb->len;
                return put_user(amount, (unsigned int __user *) argp);
        }
 
        case SIOCGSTAMP:
                return sock_get_timestamp(sk, (struct timeval __user *) argp);
 
        case SIOCGSTAMPNS:
                return sock_get_timestampns(sk, (struct timespec __user *) argp);
 
        case SIOCGIFADDR:
        case SIOCSIFADDR:
        case SIOCGIFDSTADDR:
        case SIOCSIFDSTADDR:
        case SIOCGIFBRDADDR:
        case SIOCSIFBRDADDR:
        case SIOCGIFNETMASK:
        case SIOCSIFNETMASK:
        case SIOCGIFMETRIC:
        case SIOCSIFMETRIC:
                return -EINVAL;
 
        case SIOCADDRT:
        case SIOCDELRT:
        case SIOCRSCLRRT:
                if (!capable(CAP_NET_ADMIN))
                        return -EPERM;
                return rose_rt_ioctl(cmd, argp);
 
        case SIOCRSGCAUSE: {
                struct rose_cause_struct rose_cause;
                rose_cause.cause      = rose->cause;
                rose_cause.diagnostic = rose->diagnostic;
                return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
        }
 
        case SIOCRSSCAUSE: {
                struct rose_cause_struct rose_cause;
                if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
                        return -EFAULT;
                rose->cause      = rose_cause.cause;
                rose->diagnostic = rose_cause.diagnostic;
                return 0;
        }
 
        case SIOCRSSL2CALL:
                if (!capable(CAP_NET_ADMIN)) return -EPERM;
                if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
                        ax25_listen_release(&rose_callsign, NULL);
                if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
                        return -EFAULT;
                if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
                        return ax25_listen_register(&rose_callsign, NULL);
 
                return 0;
 
        case SIOCRSGL2CALL:
                return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
 
        case SIOCRSACCEPT:
                if (rose->state == ROSE_STATE_5) {
                        rose_write_internal(sk, ROSE_CALL_ACCEPTED);
                        rose_start_idletimer(sk);
                        rose->condition = 0x00;
                        rose->vs        = 0;
                        rose->va        = 0;
                        rose->vr        = 0;
                        rose->vl        = 0;
                        rose->state     = ROSE_STATE_3;
                }
                return 0;
 
        default:
                return -ENOIOCTLCMD;
        }
 
        return 0;
}
 
#ifdef CONFIG_PROC_FS
static void *rose_info_start(struct seq_file *seq, loff_t *pos)
{
        int i;
        struct sock *s;
        struct hlist_node *node;
 
        spin_lock_bh(&rose_list_lock);
        if (*pos == 0)
                return SEQ_START_TOKEN;
 
        i = 1;
        sk_for_each(s, node, &rose_list) {
                if (i == *pos)
                        return s;
                ++i;
        }
        return NULL;
}
 
static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
{
        ++*pos;
 
        return (v == SEQ_START_TOKEN) ? sk_head(&rose_list)
                : sk_next((struct sock *)v);
}
 
static void rose_info_stop(struct seq_file *seq, void *v)
{
        spin_unlock_bh(&rose_list_lock);
}
 
static int rose_info_show(struct seq_file *seq, void *v)
{
        char buf[11];
 
        if (v == SEQ_START_TOKEN)
                seq_puts(seq,
                         "dest_addr  dest_call src_addr   src_call  dev   lci neigh st vs vr va   t  t1  t2  t3  hb    idle Snd-Q Rcv-Q inode\n");
 
        else {
                struct sock *s = v;
                struct rose_sock *rose = rose_sk(s);
                const char *devname, *callsign;
                const struct net_device *dev = rose->device;
 
                if (!dev)
                        devname = "???";
                else
                        devname = dev->name;
 
                seq_printf(seq, "%-10s %-9s ",
                        rose2asc(&rose->dest_addr),
                        ax2asc(buf, &rose->dest_call));
 
                if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
                        callsign = "??????-?";
                else
                        callsign = ax2asc(buf, &rose->source_call);
 
                seq_printf(seq,
                           "%-10s %-9s %-5s %3.3X %05d  %d  %d  %d  %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
                        rose2asc(&rose->source_addr),
                        callsign,
                        devname,
                        rose->lci & 0x0FFF,
                        (rose->neighbour) ? rose->neighbour->number : 0,
                        rose->state,
                        rose->vs,
                        rose->vr,
                        rose->va,
                        ax25_display_timer(&rose->timer) / HZ,
                        rose->t1 / HZ,
                        rose->t2 / HZ,
                        rose->t3 / HZ,
                        rose->hb / HZ,
                        ax25_display_timer(&rose->idletimer) / (60 * HZ),
                        rose->idle / (60 * HZ),
                        atomic_read(&s->sk_wmem_alloc),
                        atomic_read(&s->sk_rmem_alloc),
                        s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
        }
 
        return 0;
}
 
static const struct seq_operations rose_info_seqops = {
        .start = rose_info_start,
        .next = rose_info_next,
        .stop = rose_info_stop,
        .show = rose_info_show,
};
 
static int rose_info_open(struct inode *inode, struct file *file)
{
        return seq_open(file, &rose_info_seqops);
}
 
static const struct file_operations rose_info_fops = {
        .owner = THIS_MODULE,
        .open = rose_info_open,
        .read = seq_read,
        .llseek = seq_lseek,
        .release = seq_release,
};
#endif  /* CONFIG_PROC_FS */
 
static struct net_proto_family rose_family_ops = {
        .family         =       PF_ROSE,
        .create         =       rose_create,
        .owner          =       THIS_MODULE,
};
 
static struct proto_ops rose_proto_ops = {
        .family         =       PF_ROSE,
        .owner          =       THIS_MODULE,
        .release        =       rose_release,
        .bind           =       rose_bind,
        .connect        =       rose_connect,
        .socketpair     =       sock_no_socketpair,
        .accept         =       rose_accept,
        .getname        =       rose_getname,
        .poll           =       datagram_poll,
        .ioctl          =       rose_ioctl,
        .listen         =       rose_listen,
        .shutdown       =       sock_no_shutdown,
        .setsockopt     =       rose_setsockopt,
        .getsockopt     =       rose_getsockopt,
        .sendmsg        =       rose_sendmsg,
        .recvmsg        =       rose_recvmsg,
        .mmap           =       sock_no_mmap,
        .sendpage       =       sock_no_sendpage,
};
 
static struct notifier_block rose_dev_notifier = {
        .notifier_call  =       rose_device_event,
};
 
static struct net_device **dev_rose;
 
static struct ax25_protocol rose_pid = {
        .pid    = AX25_P_ROSE,
        .func   = rose_route_frame
};
 
static struct ax25_linkfail rose_linkfail_notifier = {
        .func   = rose_link_failed
};
 
static int __init rose_proto_init(void)
{
        int i;
        int rc;
 
        if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
                printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
                rc = -EINVAL;
                goto out;
        }
 
        rc = proto_register(&rose_proto, 0);
        if (rc != 0)
                goto out;
 
        rose_callsign = null_ax25_address;
 
        dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
        if (dev_rose == NULL) {
                printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
                rc = -ENOMEM;
                goto out_proto_unregister;
        }
 
        for (i = 0; i < rose_ndevs; i++) {
                struct net_device *dev;
                char name[IFNAMSIZ];
 
                sprintf(name, "rose%d", i);
                dev = alloc_netdev(sizeof(struct net_device_stats),
                                   name, rose_setup);
                if (!dev) {
                        printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
                        rc = -ENOMEM;
                        goto fail;
                }
                rc = register_netdev(dev);
                if (rc) {
                        printk(KERN_ERR "ROSE: netdevice registration failed\n");
                        free_netdev(dev);
                        goto fail;
                }
                lockdep_set_class(&dev->_xmit_lock, &rose_netdev_xmit_lock_key);
                dev_rose[i] = dev;
        }
 
        sock_register(&rose_family_ops);
        register_netdevice_notifier(&rose_dev_notifier);
 
        ax25_register_pid(&rose_pid);
        ax25_linkfail_register(&rose_linkfail_notifier);
 
#ifdef CONFIG_SYSCTL
        rose_register_sysctl();
#endif
        rose_loopback_init();
 
        rose_add_loopback_neigh();
 
        proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops);
        proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops);
        proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops);
        proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops);
out:
        return rc;
fail:
        while (--i >= 0) {
                unregister_netdev(dev_rose[i]);
                free_netdev(dev_rose[i]);
        }
        kfree(dev_rose);
out_proto_unregister:
        proto_unregister(&rose_proto);
        goto out;
}
module_init(rose_proto_init);
 
module_param(rose_ndevs, int, 0);
MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
 
MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
MODULE_LICENSE("GPL");
MODULE_ALIAS_NETPROTO(PF_ROSE);
 
static void __exit rose_exit(void)
{
        int i;
 
        proc_net_remove(&init_net, "rose");
        proc_net_remove(&init_net, "rose_neigh");
        proc_net_remove(&init_net, "rose_nodes");
        proc_net_remove(&init_net, "rose_routes");
        rose_loopback_clear();
 
        rose_rt_free();
 
        ax25_protocol_release(AX25_P_ROSE);
        ax25_linkfail_release(&rose_linkfail_notifier);
 
        if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
                ax25_listen_release(&rose_callsign, NULL);
 
#ifdef CONFIG_SYSCTL
        rose_unregister_sysctl();
#endif
        unregister_netdevice_notifier(&rose_dev_notifier);
 
        sock_unregister(PF_ROSE);
 
        for (i = 0; i < rose_ndevs; i++) {
                struct net_device *dev = dev_rose[i];
 
                if (dev) {
                        unregister_netdev(dev);
                        free_netdev(dev);
                }
        }
 
        kfree(dev_rose);
        proto_unregister(&rose_proto);
}
 
module_exit(rose_exit);
Browse

Tools

Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [net/] [rose/] [af_rose.c] - Blame information for rev 3

Line No.	Rev	Author	Line
1	3	xianfeng	`/*`
2			`* This program is free software; you can redistribute it and/or modify`
3			`* it under the terms of the GNU General Public License as published by`
4			`* the Free Software Foundation; either version 2 of the License, or`
5			`* (at your option) any later version.`
6			`*`
7			`* Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)`
8			`* Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)`
9			`* Copyright (C) Terry Dawson VK2KTJ (terry@animats.net)`
10			`* Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi)`
11			`*/`
12
13			`#include <linux/capability.h>`
14			`#include <linux/module.h>`
15			`#include <linux/moduleparam.h>`
16			`#include <linux/init.h>`
17			`#include <linux/errno.h>`
18			`#include <linux/types.h>`
19			`#include <linux/socket.h>`
20			`#include <linux/in.h>`
21			`#include <linux/kernel.h>`
22			`#include <linux/sched.h>`
23			`#include <linux/spinlock.h>`
24			`#include <linux/timer.h>`
25			`#include <linux/string.h>`
26			`#include <linux/sockios.h>`
27			`#include <linux/net.h>`
28			`#include <linux/stat.h>`
29			`#include <net/net_namespace.h>`
30			`#include <net/ax25.h>`
31			`#include <linux/inet.h>`
32			`#include <linux/netdevice.h>`
33			`#include <linux/if_arp.h>`
34			`#include <linux/skbuff.h>`
35			`#include <net/sock.h>`
36			`#include <asm/system.h>`
37			`#include <asm/uaccess.h>`
38			`#include <linux/fcntl.h>`
39			`#include <linux/termios.h>`
40			`#include <linux/mm.h>`