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1621 lines
37 KiB
1621 lines
37 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* |
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* Copyright (C) Jonathan Naylor G4KLX ([email protected]) |
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* Copyright (C) Alan Cox GW4PTS ([email protected]) |
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* Copyright (C) Terry Dawson VK2KTJ ([email protected]) |
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* Copyright (C) Tomi Manninen OH2BNS ([email protected]) |
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*/ |
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|
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#include <linux/capability.h> |
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#include <linux/module.h> |
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#include <linux/moduleparam.h> |
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#include <linux/init.h> |
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#include <linux/errno.h> |
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#include <linux/types.h> |
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#include <linux/socket.h> |
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#include <linux/in.h> |
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#include <linux/slab.h> |
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#include <linux/kernel.h> |
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#include <linux/sched/signal.h> |
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#include <linux/spinlock.h> |
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#include <linux/timer.h> |
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#include <linux/string.h> |
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#include <linux/sockios.h> |
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#include <linux/net.h> |
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#include <linux/stat.h> |
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#include <net/net_namespace.h> |
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#include <net/ax25.h> |
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#include <linux/inet.h> |
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#include <linux/netdevice.h> |
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#include <linux/if_arp.h> |
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#include <linux/skbuff.h> |
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#include <net/sock.h> |
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#include <linux/uaccess.h> |
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#include <linux/fcntl.h> |
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#include <linux/termios.h> |
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#include <linux/mm.h> |
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#include <linux/interrupt.h> |
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#include <linux/notifier.h> |
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#include <net/rose.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include <net/tcp_states.h> |
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#include <net/ip.h> |
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#include <net/arp.h> |
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|
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static int rose_ndevs = 10; |
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|
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int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0; |
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int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1; |
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int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2; |
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int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3; |
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int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE; |
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int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB; |
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int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING; |
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int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT; |
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int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC; |
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int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE; |
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|
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static HLIST_HEAD(rose_list); |
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static DEFINE_SPINLOCK(rose_list_lock); |
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|
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static const struct proto_ops rose_proto_ops; |
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|
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ax25_address rose_callsign; |
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|
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/* |
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* ROSE network devices are virtual network devices encapsulating ROSE |
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* frames into AX.25 which will be sent through an AX.25 device, so form a |
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* special "super class" of normal net devices; split their locks off into a |
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* separate class since they always nest. |
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*/ |
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static struct lock_class_key rose_netdev_xmit_lock_key; |
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static struct lock_class_key rose_netdev_addr_lock_key; |
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|
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static void rose_set_lockdep_one(struct net_device *dev, |
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struct netdev_queue *txq, |
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void *_unused) |
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{ |
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lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key); |
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} |
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|
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static void rose_set_lockdep_key(struct net_device *dev) |
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{ |
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lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key); |
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netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL); |
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} |
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|
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/* |
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* Convert a ROSE address into text. |
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*/ |
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char *rose2asc(char *buf, const rose_address *addr) |
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{ |
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if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 && |
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addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 && |
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addr->rose_addr[4] == 0x00) { |
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strcpy(buf, "*"); |
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} else { |
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sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF, |
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addr->rose_addr[1] & 0xFF, |
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addr->rose_addr[2] & 0xFF, |
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addr->rose_addr[3] & 0xFF, |
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addr->rose_addr[4] & 0xFF); |
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} |
|
|
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return buf; |
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} |
|
|
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/* |
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* Compare two ROSE addresses, 0 == equal. |
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*/ |
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int rosecmp(const rose_address *addr1, const rose_address *addr2) |
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{ |
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int i; |
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|
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for (i = 0; i < 5; i++) |
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if (addr1->rose_addr[i] != addr2->rose_addr[i]) |
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return 1; |
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|
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return 0; |
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} |
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|
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/* |
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* Compare two ROSE addresses for only mask digits, 0 == equal. |
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*/ |
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int rosecmpm(const rose_address *addr1, const rose_address *addr2, |
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unsigned short mask) |
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{ |
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unsigned int i, j; |
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|
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if (mask > 10) |
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return 1; |
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|
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for (i = 0; i < mask; i++) { |
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j = i / 2; |
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|
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if ((i % 2) != 0) { |
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if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F)) |
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return 1; |
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} else { |
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if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0)) |
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return 1; |
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} |
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} |
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|
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return 0; |
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} |
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|
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/* |
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* Socket removal during an interrupt is now safe. |
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*/ |
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static void rose_remove_socket(struct sock *sk) |
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{ |
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spin_lock_bh(&rose_list_lock); |
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sk_del_node_init(sk); |
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spin_unlock_bh(&rose_list_lock); |
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} |
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|
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/* |
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* Kill all bound sockets on a broken link layer connection to a |
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* particular neighbour. |
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*/ |
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void rose_kill_by_neigh(struct rose_neigh *neigh) |
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{ |
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struct sock *s; |
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|
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spin_lock_bh(&rose_list_lock); |
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sk_for_each(s, &rose_list) { |
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struct rose_sock *rose = rose_sk(s); |
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|
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if (rose->neighbour == neigh) { |
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rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); |
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rose->neighbour->use--; |
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rose->neighbour = NULL; |
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} |
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} |
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spin_unlock_bh(&rose_list_lock); |
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} |
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|
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/* |
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* Kill all bound sockets on a dropped device. |
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*/ |
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static void rose_kill_by_device(struct net_device *dev) |
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{ |
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struct sock *s; |
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|
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spin_lock_bh(&rose_list_lock); |
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sk_for_each(s, &rose_list) { |
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struct rose_sock *rose = rose_sk(s); |
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|
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if (rose->device == dev) { |
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rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); |
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if (rose->neighbour) |
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rose->neighbour->use--; |
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rose->device = NULL; |
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} |
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} |
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spin_unlock_bh(&rose_list_lock); |
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} |
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|
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/* |
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* Handle device status changes. |
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*/ |
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static int rose_device_event(struct notifier_block *this, |
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unsigned long event, void *ptr) |
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{ |
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struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
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|
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if (!net_eq(dev_net(dev), &init_net)) |
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return NOTIFY_DONE; |
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|
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if (event != NETDEV_DOWN) |
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return NOTIFY_DONE; |
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|
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switch (dev->type) { |
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case ARPHRD_ROSE: |
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rose_kill_by_device(dev); |
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break; |
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case ARPHRD_AX25: |
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rose_link_device_down(dev); |
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rose_rt_device_down(dev); |
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break; |
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} |
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|
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return NOTIFY_DONE; |
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} |
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|
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/* |
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* Add a socket to the bound sockets list. |
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*/ |
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static void rose_insert_socket(struct sock *sk) |
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{ |
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|
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spin_lock_bh(&rose_list_lock); |
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sk_add_node(sk, &rose_list); |
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spin_unlock_bh(&rose_list_lock); |
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} |
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|
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/* |
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* Find a socket that wants to accept the Call Request we just |
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* received. |
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*/ |
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static struct sock *rose_find_listener(rose_address *addr, ax25_address *call) |
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{ |
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struct sock *s; |
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|
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spin_lock_bh(&rose_list_lock); |
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sk_for_each(s, &rose_list) { |
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struct rose_sock *rose = rose_sk(s); |
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|
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if (!rosecmp(&rose->source_addr, addr) && |
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!ax25cmp(&rose->source_call, call) && |
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!rose->source_ndigis && s->sk_state == TCP_LISTEN) |
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goto found; |
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} |
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sk_for_each(s, &rose_list) { |
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struct rose_sock *rose = rose_sk(s); |
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if (!rosecmp(&rose->source_addr, addr) && |
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!ax25cmp(&rose->source_call, &null_ax25_address) && |
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s->sk_state == TCP_LISTEN) |
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goto found; |
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} |
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s = NULL; |
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found: |
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spin_unlock_bh(&rose_list_lock); |
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return s; |
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} |
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|
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/* |
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* Find a connected ROSE socket given my LCI and device. |
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*/ |
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struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh) |
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{ |
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struct sock *s; |
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spin_lock_bh(&rose_list_lock); |
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sk_for_each(s, &rose_list) { |
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struct rose_sock *rose = rose_sk(s); |
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if (rose->lci == lci && rose->neighbour == neigh) |
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goto found; |
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} |
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s = NULL; |
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found: |
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spin_unlock_bh(&rose_list_lock); |
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return s; |
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} |
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|
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/* |
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* Find a unique LCI for a given device. |
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*/ |
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unsigned int rose_new_lci(struct rose_neigh *neigh) |
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{ |
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int lci; |
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|
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if (neigh->dce_mode) { |
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for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++) |
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if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) |
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return lci; |
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} else { |
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for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--) |
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if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) |
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return lci; |
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} |
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return 0; |
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} |
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/* |
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* Deferred destroy. |
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*/ |
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void rose_destroy_socket(struct sock *); |
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|
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/* |
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* Handler for deferred kills. |
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*/ |
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static void rose_destroy_timer(struct timer_list *t) |
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{ |
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struct sock *sk = from_timer(sk, t, sk_timer); |
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|
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rose_destroy_socket(sk); |
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} |
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|
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/* |
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* This is called from user mode and the timers. Thus it protects itself |
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* against interrupt users but doesn't worry about being called during |
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* work. Once it is removed from the queue no interrupt or bottom half |
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* will touch it and we are (fairly 8-) ) safe. |
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*/ |
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void rose_destroy_socket(struct sock *sk) |
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{ |
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struct sk_buff *skb; |
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|
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rose_remove_socket(sk); |
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rose_stop_heartbeat(sk); |
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rose_stop_idletimer(sk); |
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rose_stop_timer(sk); |
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rose_clear_queues(sk); /* Flush the queues */ |
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|
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while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { |
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if (skb->sk != sk) { /* A pending connection */ |
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/* Queue the unaccepted socket for death */ |
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sock_set_flag(skb->sk, SOCK_DEAD); |
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rose_start_heartbeat(skb->sk); |
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rose_sk(skb->sk)->state = ROSE_STATE_0; |
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} |
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kfree_skb(skb); |
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} |
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if (sk_has_allocations(sk)) { |
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/* Defer: outstanding buffers */ |
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timer_setup(&sk->sk_timer, rose_destroy_timer, 0); |
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sk->sk_timer.expires = jiffies + 10 * HZ; |
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add_timer(&sk->sk_timer); |
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} else |
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sock_put(sk); |
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} |
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|
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/* |
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* Handling for system calls applied via the various interfaces to a |
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* ROSE socket object. |
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*/ |
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|
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static int rose_setsockopt(struct socket *sock, int level, int optname, |
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sockptr_t optval, unsigned int optlen) |
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{ |
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struct sock *sk = sock->sk; |
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struct rose_sock *rose = rose_sk(sk); |
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int opt; |
|
|
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if (level != SOL_ROSE) |
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return -ENOPROTOOPT; |
|
|
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if (optlen < sizeof(int)) |
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return -EINVAL; |
|
|
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if (copy_from_sockptr(&opt, optval, sizeof(int))) |
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return -EFAULT; |
|
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switch (optname) { |
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case ROSE_DEFER: |
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rose->defer = opt ? 1 : 0; |
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return 0; |
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|
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case ROSE_T1: |
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if (opt < 1) |
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return -EINVAL; |
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rose->t1 = opt * HZ; |
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return 0; |
|
|
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case ROSE_T2: |
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if (opt < 1) |
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return -EINVAL; |
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rose->t2 = opt * HZ; |
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return 0; |
|
|
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case ROSE_T3: |
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if (opt < 1) |
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return -EINVAL; |
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rose->t3 = opt * HZ; |
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return 0; |
|
|
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case ROSE_HOLDBACK: |
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if (opt < 1) |
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return -EINVAL; |
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rose->hb = opt * HZ; |
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return 0; |
|
|
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case ROSE_IDLE: |
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if (opt < 0) |
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return -EINVAL; |
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rose->idle = opt * 60 * HZ; |
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return 0; |
|
|
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case ROSE_QBITINCL: |
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rose->qbitincl = opt ? 1 : 0; |
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return 0; |
|
|
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default: |
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return -ENOPROTOOPT; |
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} |
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} |
|
|
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static int rose_getsockopt(struct socket *sock, int level, int optname, |
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char __user *optval, int __user *optlen) |
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{ |
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struct sock *sk = sock->sk; |
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struct rose_sock *rose = rose_sk(sk); |
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int val = 0; |
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int len; |
|
|
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if (level != SOL_ROSE) |
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return -ENOPROTOOPT; |
|
|
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if (get_user(len, optlen)) |
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return -EFAULT; |
|
|
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if (len < 0) |
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return -EINVAL; |
|
|
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switch (optname) { |
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case ROSE_DEFER: |
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val = rose->defer; |
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break; |
|
|
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case ROSE_T1: |
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val = rose->t1 / HZ; |
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break; |
|
|
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case ROSE_T2: |
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val = rose->t2 / HZ; |
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break; |
|
|
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case ROSE_T3: |
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val = rose->t3 / HZ; |
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break; |
|
|
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case ROSE_HOLDBACK: |
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val = rose->hb / HZ; |
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break; |
|
|
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case ROSE_IDLE: |
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val = rose->idle / (60 * HZ); |
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break; |
|
|
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case ROSE_QBITINCL: |
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val = rose->qbitincl; |
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break; |
|
|
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default: |
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return -ENOPROTOOPT; |
|
} |
|
|
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len = min_t(unsigned int, len, sizeof(int)); |
|
|
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if (put_user(len, optlen)) |
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return -EFAULT; |
|
|
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return copy_to_user(optval, &val, len) ? -EFAULT : 0; |
|
} |
|
|
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static int rose_listen(struct socket *sock, int backlog) |
|
{ |
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struct sock *sk = sock->sk; |
|
|
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if (sk->sk_state != TCP_LISTEN) { |
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struct rose_sock *rose = rose_sk(sk); |
|
|
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rose->dest_ndigis = 0; |
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memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); |
|
memset(&rose->dest_call, 0, AX25_ADDR_LEN); |
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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; |
|
} |
|
|
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static struct proto rose_proto = { |
|
.name = "ROSE", |
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.owner = THIS_MODULE, |
|
.obj_size = sizeof(struct rose_sock), |
|
}; |
|
|
|
static int rose_create(struct net *net, struct socket *sock, int protocol, |
|
int kern) |
|
{ |
|
struct sock *sk; |
|
struct rose_sock *rose; |
|
|
|
if (!net_eq(net, &init_net)) |
|
return -EAFNOSUPPORT; |
|
|
|
if (sock->type != SOCK_SEQPACKET || protocol != 0) |
|
return -ESOCKTNOSUPPORT; |
|
|
|
sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto, kern); |
|
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 |
|
|
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sock->ops = &rose_proto_ops; |
|
sk->sk_protocol = protocol; |
|
|
|
timer_setup(&rose->timer, NULL, 0); |
|
timer_setup(&rose->idletimer, NULL, 0); |
|
|
|
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, 0); |
|
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); |
|
|
|
timer_setup(&rose->timer, NULL, 0); |
|
timer_setup(&rose->idletimer, NULL, 0); |
|
|
|
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 ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) |
|
return -EINVAL; |
|
|
|
if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) |
|
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)) { |
|
dev_put(dev); |
|
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); |
|
|
|
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 ((unsigned int) 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->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_sleep(sk), &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_sleep(sk), &wait); |
|
|
|
if (err) |
|
goto out_release; |
|
} |
|
|
|
if (sk->sk_state != TCP_ESTABLISHED) { |
|
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, |
|
bool kern) |
|
{ |
|
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_sleep(sk), &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_sleep(sk), &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_acceptq_removed(sk); |
|
|
|
out_release: |
|
release_sock(sk); |
|
|
|
return err; |
|
} |
|
|
|
static int rose_getname(struct socket *sock, struct sockaddr *uaddr, |
|
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; |
|
|
|
memset(srose, 0, sizeof(*srose)); |
|
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]; |
|
} |
|
|
|
return sizeof(struct full_sockaddr_rose); |
|
} |
|
|
|
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; |
|
|
|
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)); |
|
|
|
if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF, |
|
skb->len - ROSE_CALL_REQ_FACILITIES_OFF, |
|
&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_acceptq_added(sk); |
|
|
|
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); |
|
|
|
return 1; |
|
} |
|
|
|
static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) |
|
{ |
|
struct sock *sk = sock->sk; |
|
struct rose_sock *rose = rose_sk(sk); |
|
DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, 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]; |
|
} |
|
|
|
/* Build a packet */ |
|
/* Sanity check the packet size */ |
|
if (len > 65535) |
|
return -EMSGSIZE; |
|
|
|
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 |
|
*/ |
|
|
|
skb_reset_transport_header(skb); |
|
skb_put(skb, len); |
|
|
|
err = memcpy_from_msg(skb_transport_header(skb), msg, 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); |
|
|
|
/* 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; |
|
|
|
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 socket *sock, struct msghdr *msg, size_t size, |
|
int flags) |
|
{ |
|
struct sock *sk = sock->sk; |
|
struct rose_sock *rose = rose_sk(sk); |
|
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_msg(skb, 0, msg, copied); |
|
|
|
if (msg->msg_name) { |
|
struct sockaddr_rose *srose; |
|
DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose, |
|
msg->msg_name); |
|
|
|
memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose)); |
|
srose = msg->msg_name; |
|
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++) |
|
full_srose->srose_digis[n] = rose->dest_digis[n]; |
|
msg->msg_namelen = sizeof(struct full_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 - sk_wmem_alloc_get(sk); |
|
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 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) |
|
{ |
|
spin_lock_bh(&rose_list_lock); |
|
return seq_hlist_start_head(&rose_list, *pos); |
|
} |
|
|
|
static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) |
|
{ |
|
return seq_hlist_next(v, &rose_list, pos); |
|
} |
|
|
|
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], rsbuf[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 = sk_entry(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(rsbuf, &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(rsbuf, &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), |
|
sk_wmem_alloc_get(s), |
|
sk_rmem_alloc_get(s), |
|
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, |
|
}; |
|
#endif /* CONFIG_PROC_FS */ |
|
|
|
static const struct net_proto_family rose_family_ops = { |
|
.family = PF_ROSE, |
|
.create = rose_create, |
|
.owner = THIS_MODULE, |
|
}; |
|
|
|
static const 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, |
|
.gettstamp = sock_gettstamp, |
|
.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 too large\n"); |
|
rc = -EINVAL; |
|
goto out; |
|
} |
|
|
|
rc = proto_register(&rose_proto, 0); |
|
if (rc != 0) |
|
goto out; |
|
|
|
rose_callsign = null_ax25_address; |
|
|
|
dev_rose = kcalloc(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(0, name, NET_NAME_UNKNOWN, 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_create_seq("rose", 0444, init_net.proc_net, &rose_info_seqops); |
|
proc_create_seq("rose_neigh", 0444, init_net.proc_net, |
|
&rose_neigh_seqops); |
|
proc_create_seq("rose_nodes", 0444, init_net.proc_net, |
|
&rose_node_seqops); |
|
proc_create_seq("rose_routes", 0444, init_net.proc_net, |
|
&rose_route_seqops); |
|
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 <[email protected]>"); |
|
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; |
|
|
|
remove_proc_entry("rose", init_net.proc_net); |
|
remove_proc_entry("rose_neigh", init_net.proc_net); |
|
remove_proc_entry("rose_nodes", init_net.proc_net); |
|
remove_proc_entry("rose_routes", init_net.proc_net); |
|
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);
|
|
|