| /* |
| * 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; |
| static struct lock_class_key rose_netdev_addr_lock_key; |
| |
| static void rose_set_lockdep_one(struct net_device *dev, |
| struct netdev_queue *txq, |
| void *_unused) |
| { |
| lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key); |
| } |
| |
| static void rose_set_lockdep_key(struct net_device *dev) |
| { |
| lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key); |
| netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL); |
| } |
| |
| /* |
| * 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) |
| { |
| unsigned 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 (!net_eq(dev_net(dev), &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 */ |
| setup_timer(&sk->sk_timer, rose_destroy_timer, |
| (unsigned long)sk); |
| sk->sk_timer.expires = jiffies + 10 * HZ; |
| 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(sock_net(osk), 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_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; |
| 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; |
| |
| sock_hold(sk); |
| sock_orphan(sk); |
| lock_sock(sk); |
| rose = rose_sk(sk); |
| |
| switch (rose->state) { |
| case ROSE_STATE_0: |
| release_sock(sk); |
| rose_disconnect(sk, 0, -1, -1); |
| lock_sock(sk); |
| rose_destroy_socket(sk); |
| break; |
| |
| case ROSE_STATE_2: |
| rose->neighbour->use--; |
| release_sock(sk); |
| rose_disconnect(sk, 0, -1, -1); |
| lock_sock(sk); |
| 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; |
| release_sock(sk); |
| sock_put(sk); |
| |
| 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, 0); |
| if (!rose->neighbour) { |
| err = -ENETUNREACH; |
| goto out_release; |
| } |
| |
| 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, 0); |
| 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; |
| sock_graft(newsk, newsock); |
| |
| /* Now attach up the new socket */ |
| skb->sk = NULL; |
| kfree_skb(skb); |
| sk->sk_ack_backlog--; |
| |
| 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) >> 1; |
| len += (((skb->data[3] >> 0) & 0x0F) + 1) >> 1; |
| 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; |
| |
| /* ROSE empty frame has no meaning : don't send */ |
| if (len == 0) |
| return 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; |
| |
| /* ROSE empty frame has no meaning : ignore it */ |
| if (copied == 0) { |
| skb_free_datagram(sk, skb); |
| return copied; |
| } |
| |
| 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) |
| __acquires(rose_list_lock) |
| { |
| 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) |
| __releases(rose_list_lock) |
| { |
| 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; |
| } |
| rose_set_lockdep_key(dev); |
| 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); |