/*
|
/*
|
* NET/ROM release 007
|
* NET/ROM release 007
|
*
|
*
|
* This code REQUIRES 2.1.15 or higher/ NET3.038
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* This code REQUIRES 2.1.15 or higher/ NET3.038
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*
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*
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* This module:
|
* This module:
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* This module is free software; you can redistribute it and/or
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* This module is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* modify it under the terms of the GNU General Public License
|
* as published by the Free Software Foundation; either version
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
|
* 2 of the License, or (at your option) any later version.
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*
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*
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* History
|
* History
|
* NET/ROM 001 Jonathan(G4KLX) Cloned from the AX25 code.
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* NET/ROM 001 Jonathan(G4KLX) Cloned from the AX25 code.
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* NET/ROM 002 Darryl(G7LED) Fixes and address enhancement.
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* NET/ROM 002 Darryl(G7LED) Fixes and address enhancement.
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* Jonathan(G4KLX) Complete bind re-think.
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* Jonathan(G4KLX) Complete bind re-think.
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* Alan(GW4PTS) Trivial tweaks into new format.
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* Alan(GW4PTS) Trivial tweaks into new format.
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* NET/ROM 003 Jonathan(G4KLX) Added G8BPQ extensions.
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* NET/ROM 003 Jonathan(G4KLX) Added G8BPQ extensions.
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* Added NET/ROM routing ioctl.
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* Added NET/ROM routing ioctl.
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* Darryl(G7LED) Fix autobinding (on connect).
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* Darryl(G7LED) Fix autobinding (on connect).
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* Fixed nr_release(), set TCP_CLOSE, wakeup app
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* Fixed nr_release(), set TCP_CLOSE, wakeup app
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* context, THEN make the sock dead.
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* context, THEN make the sock dead.
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* Circuit ID check before allocating it on
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* Circuit ID check before allocating it on
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* a connection.
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* a connection.
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* Alan(GW4PTS) sendmsg/recvmsg only. Fixed connect clear bug
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* Alan(GW4PTS) sendmsg/recvmsg only. Fixed connect clear bug
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* inherited from AX.25
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* inherited from AX.25
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* NET/ROM 004 Jonathan(G4KLX) Converted to module.
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* NET/ROM 004 Jonathan(G4KLX) Converted to module.
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* NET/ROM 005 Jonathan(G4KLX) Linux 2.1
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* NET/ROM 005 Jonathan(G4KLX) Linux 2.1
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* Alan(GW4PTS) Started POSIXisms
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* Alan(GW4PTS) Started POSIXisms
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* NET/ROM 006 Alan(GW4PTS) Brought in line with the ANK changes
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* NET/ROM 006 Alan(GW4PTS) Brought in line with the ANK changes
|
* Jonathan(G4KLX) Removed hdrincl.
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* Jonathan(G4KLX) Removed hdrincl.
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* NET/ROM 007 Jonathan(G4KLX) New timer architecture.
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* NET/ROM 007 Jonathan(G4KLX) New timer architecture.
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* Impmented Idle timer.
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* Impmented Idle timer.
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* Arnaldo C. Melo s/suser/capable/, micro cleanups
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* Arnaldo C. Melo s/suser/capable/, micro cleanups
|
* Jeroen(PE1RXQ) Use sock_orphan() on release.
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* Jeroen(PE1RXQ) Use sock_orphan() on release.
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* Tomi(OH2BNS) Better frame type checking.
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* Tomi(OH2BNS) Better frame type checking.
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* Device refcnt fixes.
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* Device refcnt fixes.
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*/
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*/
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|
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#include <linux/config.h>
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/in.h>
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/timer.h>
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#include <linux/string.h>
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#include <linux/string.h>
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#include <linux/sockios.h>
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#include <linux/sockios.h>
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#include <linux/net.h>
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#include <linux/net.h>
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#include <linux/stat.h>
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#include <linux/stat.h>
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#include <net/ax25.h>
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#include <net/ax25.h>
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#include <linux/inet.h>
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#include <linux/inet.h>
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#include <linux/netdevice.h>
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#include <linux/netdevice.h>
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#include <linux/if_arp.h>
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#include <linux/if_arp.h>
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#include <linux/skbuff.h>
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#include <linux/skbuff.h>
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#include <net/sock.h>
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#include <net/sock.h>
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#include <asm/uaccess.h>
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#include <asm/uaccess.h>
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#include <asm/system.h>
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#include <asm/system.h>
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#include <linux/fcntl.h>
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#include <linux/fcntl.h>
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#include <linux/termios.h> /* For TIOCINQ/OUTQ */
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#include <linux/termios.h> /* For TIOCINQ/OUTQ */
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#include <linux/mm.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/interrupt.h>
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#include <linux/notifier.h>
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#include <linux/notifier.h>
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#include <net/netrom.h>
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#include <net/netrom.h>
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#include <linux/proc_fs.h>
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#include <linux/proc_fs.h>
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#include <net/ip.h>
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#include <net/ip.h>
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#include <net/arp.h>
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#include <net/arp.h>
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#include <linux/init.h>
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#include <linux/init.h>
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|
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int nr_ndevs = 4;
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int nr_ndevs = 4;
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|
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int sysctl_netrom_default_path_quality = NR_DEFAULT_QUAL;
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int sysctl_netrom_default_path_quality = NR_DEFAULT_QUAL;
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int sysctl_netrom_obsolescence_count_initialiser = NR_DEFAULT_OBS;
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int sysctl_netrom_obsolescence_count_initialiser = NR_DEFAULT_OBS;
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int sysctl_netrom_network_ttl_initialiser = NR_DEFAULT_TTL;
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int sysctl_netrom_network_ttl_initialiser = NR_DEFAULT_TTL;
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int sysctl_netrom_transport_timeout = NR_DEFAULT_T1;
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int sysctl_netrom_transport_timeout = NR_DEFAULT_T1;
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int sysctl_netrom_transport_maximum_tries = NR_DEFAULT_N2;
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int sysctl_netrom_transport_maximum_tries = NR_DEFAULT_N2;
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int sysctl_netrom_transport_acknowledge_delay = NR_DEFAULT_T2;
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int sysctl_netrom_transport_acknowledge_delay = NR_DEFAULT_T2;
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int sysctl_netrom_transport_busy_delay = NR_DEFAULT_T4;
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int sysctl_netrom_transport_busy_delay = NR_DEFAULT_T4;
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int sysctl_netrom_transport_requested_window_size = NR_DEFAULT_WINDOW;
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int sysctl_netrom_transport_requested_window_size = NR_DEFAULT_WINDOW;
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int sysctl_netrom_transport_no_activity_timeout = NR_DEFAULT_IDLE;
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int sysctl_netrom_transport_no_activity_timeout = NR_DEFAULT_IDLE;
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int sysctl_netrom_routing_control = NR_DEFAULT_ROUTING;
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int sysctl_netrom_routing_control = NR_DEFAULT_ROUTING;
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int sysctl_netrom_link_fails_count = NR_DEFAULT_FAILS;
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int sysctl_netrom_link_fails_count = NR_DEFAULT_FAILS;
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|
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static unsigned short circuit = 0x101;
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static unsigned short circuit = 0x101;
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|
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static struct sock *volatile nr_list;
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static struct sock *volatile nr_list;
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|
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static struct proto_ops nr_proto_ops;
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static struct proto_ops nr_proto_ops;
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|
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static void nr_free_sock(struct sock *sk)
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static void nr_free_sock(struct sock *sk)
|
{
|
{
|
sk_free(sk);
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sk_free(sk);
|
|
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MOD_DEC_USE_COUNT;
|
MOD_DEC_USE_COUNT;
|
}
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}
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|
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static struct sock *nr_alloc_sock(void)
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static struct sock *nr_alloc_sock(void)
|
{
|
{
|
struct sock *sk;
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struct sock *sk;
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nr_cb *nr;
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nr_cb *nr;
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|
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if ((sk = sk_alloc(PF_NETROM, GFP_ATOMIC, 1)) == NULL)
|
if ((sk = sk_alloc(PF_NETROM, GFP_ATOMIC, 1)) == NULL)
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return NULL;
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return NULL;
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|
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if ((nr = kmalloc(sizeof(*nr), GFP_ATOMIC)) == NULL) {
|
if ((nr = kmalloc(sizeof(*nr), GFP_ATOMIC)) == NULL) {
|
sk_free(sk);
|
sk_free(sk);
|
return NULL;
|
return NULL;
|
}
|
}
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|
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MOD_INC_USE_COUNT;
|
MOD_INC_USE_COUNT;
|
|
|
memset(nr, 0x00, sizeof(*nr));
|
memset(nr, 0x00, sizeof(*nr));
|
|
|
sk->protinfo.nr = nr;
|
sk->protinfo.nr = nr;
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nr->sk = sk;
|
nr->sk = sk;
|
|
|
return sk;
|
return sk;
|
}
|
}
|
|
|
/*
|
/*
|
* Socket removal during an interrupt is now safe.
|
* Socket removal during an interrupt is now safe.
|
*/
|
*/
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static void nr_remove_socket(struct sock *sk)
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static void nr_remove_socket(struct sock *sk)
|
{
|
{
|
struct sock *s;
|
struct sock *s;
|
unsigned long flags;
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unsigned long flags;
|
|
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save_flags(flags); cli();
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save_flags(flags); cli();
|
|
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if ((s = nr_list) == sk) {
|
if ((s = nr_list) == sk) {
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nr_list = s->next;
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nr_list = s->next;
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dev_put(sk->protinfo.nr->device);
|
dev_put(sk->protinfo.nr->device);
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restore_flags(flags);
|
restore_flags(flags);
|
return;
|
return;
|
}
|
}
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|
|
while (s != NULL && s->next != NULL) {
|
while (s != NULL && s->next != NULL) {
|
if (s->next == sk) {
|
if (s->next == sk) {
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s->next = sk->next;
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s->next = sk->next;
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dev_put(sk->protinfo.nr->device);
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dev_put(sk->protinfo.nr->device);
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restore_flags(flags);
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restore_flags(flags);
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return;
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return;
|
}
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}
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|
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s = s->next;
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s = s->next;
|
}
|
}
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|
|
restore_flags(flags);
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restore_flags(flags);
|
}
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}
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|
|
/*
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/*
|
* Kill all bound sockets on a dropped device.
|
* Kill all bound sockets on a dropped device.
|
*/
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*/
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static void nr_kill_by_device(struct net_device *dev)
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static void nr_kill_by_device(struct net_device *dev)
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{
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{
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struct sock *s;
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struct sock *s;
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|
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for (s = nr_list; s != NULL; s = s->next) {
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for (s = nr_list; s != NULL; s = s->next) {
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if (s->protinfo.nr->device == dev)
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if (s->protinfo.nr->device == dev)
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nr_disconnect(s, ENETUNREACH);
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nr_disconnect(s, ENETUNREACH);
|
}
|
}
|
}
|
}
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|
|
/*
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/*
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* Handle device status changes.
|
* Handle device status changes.
|
*/
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*/
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static int nr_device_event(struct notifier_block *this, unsigned long event, void *ptr)
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static int nr_device_event(struct notifier_block *this, unsigned long event, void *ptr)
|
{
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{
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struct net_device *dev = (struct net_device *)ptr;
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struct net_device *dev = (struct net_device *)ptr;
|
|
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if (event != NETDEV_DOWN)
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if (event != NETDEV_DOWN)
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return NOTIFY_DONE;
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return NOTIFY_DONE;
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|
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nr_kill_by_device(dev);
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nr_kill_by_device(dev);
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nr_rt_device_down(dev);
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nr_rt_device_down(dev);
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|
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return NOTIFY_DONE;
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return NOTIFY_DONE;
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}
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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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* Add a socket to the bound sockets list.
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*/
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*/
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static void nr_insert_socket(struct sock *sk)
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static void nr_insert_socket(struct sock *sk)
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{
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{
|
unsigned long flags;
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unsigned long flags;
|
|
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save_flags(flags); cli();
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save_flags(flags); cli();
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|
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sk->next = nr_list;
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sk->next = nr_list;
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nr_list = sk;
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nr_list = sk;
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|
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restore_flags(flags);
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restore_flags(flags);
|
}
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}
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|
|
/*
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/*
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* Find a socket that wants to accept the Connect Request we just
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* Find a socket that wants to accept the Connect Request we just
|
* received.
|
* received.
|
*/
|
*/
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static struct sock *nr_find_listener(ax25_address *addr)
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static struct sock *nr_find_listener(ax25_address *addr)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
struct sock *s;
|
struct sock *s;
|
|
|
save_flags(flags);
|
save_flags(flags);
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cli();
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cli();
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|
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for (s = nr_list; s != NULL; s = s->next) {
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for (s = nr_list; s != NULL; s = s->next) {
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if (ax25cmp(&s->protinfo.nr->source_addr, addr) == 0 && s->state == TCP_LISTEN) {
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if (ax25cmp(&s->protinfo.nr->source_addr, addr) == 0 && s->state == TCP_LISTEN) {
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restore_flags(flags);
|
restore_flags(flags);
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return s;
|
return s;
|
}
|
}
|
}
|
}
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/*
|
/*
|
* Find a connected NET/ROM socket given my circuit IDs.
|
* Find a connected NET/ROM socket given my circuit IDs.
|
*/
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*/
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static struct sock *nr_find_socket(unsigned char index, unsigned char id)
|
static struct sock *nr_find_socket(unsigned char index, unsigned char id)
|
{
|
{
|
struct sock *s;
|
struct sock *s;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags);
|
save_flags(flags);
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cli();
|
cli();
|
|
|
for (s = nr_list; s != NULL; s = s->next) {
|
for (s = nr_list; s != NULL; s = s->next) {
|
if (s->protinfo.nr->my_index == index && s->protinfo.nr->my_id == id) {
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if (s->protinfo.nr->my_index == index && s->protinfo.nr->my_id == id) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return s;
|
return s;
|
}
|
}
|
}
|
}
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/*
|
/*
|
* Find a connected NET/ROM socket given their circuit IDs.
|
* Find a connected NET/ROM socket given their circuit IDs.
|
*/
|
*/
|
static struct sock *nr_find_peer(unsigned char index, unsigned char id, ax25_address *dest)
|
static struct sock *nr_find_peer(unsigned char index, unsigned char id, ax25_address *dest)
|
{
|
{
|
struct sock *s;
|
struct sock *s;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
|
|
for (s = nr_list; s != NULL; s = s->next) {
|
for (s = nr_list; s != NULL; s = s->next) {
|
if (s->protinfo.nr->your_index == index && s->protinfo.nr->your_id == id && ax25cmp(&s->protinfo.nr->dest_addr, dest) == 0) {
|
if (s->protinfo.nr->your_index == index && s->protinfo.nr->your_id == id && ax25cmp(&s->protinfo.nr->dest_addr, dest) == 0) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return s;
|
return s;
|
}
|
}
|
}
|
}
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/*
|
/*
|
* Find next free circuit ID.
|
* Find next free circuit ID.
|
*/
|
*/
|
static unsigned short nr_find_next_circuit(void)
|
static unsigned short nr_find_next_circuit(void)
|
{
|
{
|
unsigned short id = circuit;
|
unsigned short id = circuit;
|
unsigned char i, j;
|
unsigned char i, j;
|
|
|
for (;;) {
|
for (;;) {
|
i = id / 256;
|
i = id / 256;
|
j = id % 256;
|
j = id % 256;
|
|
|
if (i != 0 && j != 0)
|
if (i != 0 && j != 0)
|
if (nr_find_socket(i, j) == NULL)
|
if (nr_find_socket(i, j) == NULL)
|
break;
|
break;
|
|
|
id++;
|
id++;
|
}
|
}
|
|
|
return id;
|
return id;
|
}
|
}
|
|
|
/*
|
/*
|
* Deferred destroy.
|
* Deferred destroy.
|
*/
|
*/
|
void nr_destroy_socket(struct sock *);
|
void nr_destroy_socket(struct sock *);
|
|
|
/*
|
/*
|
* Handler for deferred kills.
|
* Handler for deferred kills.
|
*/
|
*/
|
static void nr_destroy_timer(unsigned long data)
|
static void nr_destroy_timer(unsigned long data)
|
{
|
{
|
nr_destroy_socket((struct sock *)data);
|
nr_destroy_socket((struct sock *)data);
|
}
|
}
|
|
|
/*
|
/*
|
* This is called from user mode and the timers. Thus it protects itself against
|
* 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.
|
* interrupt users but doesn't worry about being called during work.
|
* Once it is removed from the queue no interrupt or bottom half will
|
* Once it is removed from the queue no interrupt or bottom half will
|
* touch it and we are (fairly 8-) ) safe.
|
* touch it and we are (fairly 8-) ) safe.
|
*/
|
*/
|
void nr_destroy_socket(struct sock *sk) /* Not static as it's used by the timer */
|
void nr_destroy_socket(struct sock *sk) /* Not static as it's used by the timer */
|
{
|
{
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags); cli();
|
save_flags(flags); cli();
|
|
|
nr_stop_heartbeat(sk);
|
nr_stop_heartbeat(sk);
|
nr_stop_t1timer(sk);
|
nr_stop_t1timer(sk);
|
nr_stop_t2timer(sk);
|
nr_stop_t2timer(sk);
|
nr_stop_t4timer(sk);
|
nr_stop_t4timer(sk);
|
nr_stop_idletimer(sk);
|
nr_stop_idletimer(sk);
|
|
|
nr_remove_socket(sk);
|
nr_remove_socket(sk);
|
nr_clear_queues(sk); /* Flush the queues */
|
nr_clear_queues(sk); /* Flush the queues */
|
|
|
while ((skb = skb_dequeue(&sk->receive_queue)) != NULL) {
|
while ((skb = skb_dequeue(&sk->receive_queue)) != NULL) {
|
if (skb->sk != sk) { /* A pending connection */
|
if (skb->sk != sk) { /* A pending connection */
|
skb->sk->dead = 1; /* Queue the unaccepted socket for death */
|
skb->sk->dead = 1; /* Queue the unaccepted socket for death */
|
nr_start_heartbeat(skb->sk);
|
nr_start_heartbeat(skb->sk);
|
skb->sk->protinfo.nr->state = NR_STATE_0;
|
skb->sk->protinfo.nr->state = NR_STATE_0;
|
}
|
}
|
|
|
kfree_skb(skb);
|
kfree_skb(skb);
|
}
|
}
|
|
|
if (atomic_read(&sk->wmem_alloc) != 0 || atomic_read(&sk->rmem_alloc) != 0) {
|
if (atomic_read(&sk->wmem_alloc) != 0 || atomic_read(&sk->rmem_alloc) != 0) {
|
/* Defer: outstanding buffers */
|
/* Defer: outstanding buffers */
|
init_timer(&sk->timer);
|
init_timer(&sk->timer);
|
sk->timer.expires = jiffies + 10 * HZ;
|
sk->timer.expires = jiffies + 10 * HZ;
|
sk->timer.function = nr_destroy_timer;
|
sk->timer.function = nr_destroy_timer;
|
sk->timer.data = (unsigned long)sk;
|
sk->timer.data = (unsigned long)sk;
|
add_timer(&sk->timer);
|
add_timer(&sk->timer);
|
} else {
|
} else {
|
nr_free_sock(sk);
|
nr_free_sock(sk);
|
}
|
}
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
}
|
}
|
|
|
/*
|
/*
|
* Handling for system calls applied via the various interfaces to a
|
* Handling for system calls applied via the various interfaces to a
|
* NET/ROM socket object.
|
* NET/ROM socket object.
|
*/
|
*/
|
|
|
static int nr_setsockopt(struct socket *sock, int level, int optname,
|
static int nr_setsockopt(struct socket *sock, int level, int optname,
|
char *optval, int optlen)
|
char *optval, int optlen)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
int opt;
|
int opt;
|
|
|
if (level != SOL_NETROM)
|
if (level != SOL_NETROM)
|
return -ENOPROTOOPT;
|
return -ENOPROTOOPT;
|
|
|
if (optlen < sizeof(int))
|
if (optlen < sizeof(int))
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (get_user(opt, (int *)optval))
|
if (get_user(opt, (int *)optval))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
switch (optname) {
|
switch (optname) {
|
case NETROM_T1:
|
case NETROM_T1:
|
if (opt < 1)
|
if (opt < 1)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.nr->t1 = opt * HZ;
|
sk->protinfo.nr->t1 = opt * HZ;
|
return 0;
|
return 0;
|
|
|
case NETROM_T2:
|
case NETROM_T2:
|
if (opt < 1)
|
if (opt < 1)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.nr->t2 = opt * HZ;
|
sk->protinfo.nr->t2 = opt * HZ;
|
return 0;
|
return 0;
|
|
|
case NETROM_N2:
|
case NETROM_N2:
|
if (opt < 1 || opt > 31)
|
if (opt < 1 || opt > 31)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.nr->n2 = opt;
|
sk->protinfo.nr->n2 = opt;
|
return 0;
|
return 0;
|
|
|
case NETROM_T4:
|
case NETROM_T4:
|
if (opt < 1)
|
if (opt < 1)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.nr->t4 = opt * HZ;
|
sk->protinfo.nr->t4 = opt * HZ;
|
return 0;
|
return 0;
|
|
|
case NETROM_IDLE:
|
case NETROM_IDLE:
|
if (opt < 0)
|
if (opt < 0)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.nr->idle = opt * 60 * HZ;
|
sk->protinfo.nr->idle = opt * 60 * HZ;
|
return 0;
|
return 0;
|
|
|
default:
|
default:
|
return -ENOPROTOOPT;
|
return -ENOPROTOOPT;
|
}
|
}
|
}
|
}
|
|
|
static int nr_getsockopt(struct socket *sock, int level, int optname,
|
static int nr_getsockopt(struct socket *sock, int level, int optname,
|
char *optval, int *optlen)
|
char *optval, int *optlen)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
int val = 0;
|
int val = 0;
|
int len;
|
int len;
|
|
|
if (level != SOL_NETROM)
|
if (level != SOL_NETROM)
|
return -ENOPROTOOPT;
|
return -ENOPROTOOPT;
|
|
|
if (get_user(len, optlen))
|
if (get_user(len, optlen))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
if (len < 0)
|
if (len < 0)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
switch (optname) {
|
switch (optname) {
|
case NETROM_T1:
|
case NETROM_T1:
|
val = sk->protinfo.nr->t1 / HZ;
|
val = sk->protinfo.nr->t1 / HZ;
|
break;
|
break;
|
|
|
case NETROM_T2:
|
case NETROM_T2:
|
val = sk->protinfo.nr->t2 / HZ;
|
val = sk->protinfo.nr->t2 / HZ;
|
break;
|
break;
|
|
|
case NETROM_N2:
|
case NETROM_N2:
|
val = sk->protinfo.nr->n2;
|
val = sk->protinfo.nr->n2;
|
break;
|
break;
|
|
|
case NETROM_T4:
|
case NETROM_T4:
|
val = sk->protinfo.nr->t4 / HZ;
|
val = sk->protinfo.nr->t4 / HZ;
|
break;
|
break;
|
|
|
case NETROM_IDLE:
|
case NETROM_IDLE:
|
val = sk->protinfo.nr->idle / (60 * HZ);
|
val = sk->protinfo.nr->idle / (60 * HZ);
|
break;
|
break;
|
|
|
default:
|
default:
|
return -ENOPROTOOPT;
|
return -ENOPROTOOPT;
|
}
|
}
|
|
|
len = min_t(unsigned int, len, sizeof(int));
|
len = min_t(unsigned int, len, sizeof(int));
|
|
|
if (put_user(len, optlen))
|
if (put_user(len, optlen))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
return copy_to_user(optval, &val, len) ? -EFAULT : 0;
|
return copy_to_user(optval, &val, len) ? -EFAULT : 0;
|
}
|
}
|
|
|
static int nr_listen(struct socket *sock, int backlog)
|
static int nr_listen(struct socket *sock, int backlog)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
|
|
if (sk->state != TCP_LISTEN) {
|
if (sk->state != TCP_LISTEN) {
|
memset(&sk->protinfo.nr->user_addr, '\0', AX25_ADDR_LEN);
|
memset(&sk->protinfo.nr->user_addr, '\0', AX25_ADDR_LEN);
|
sk->max_ack_backlog = backlog;
|
sk->max_ack_backlog = backlog;
|
sk->state = TCP_LISTEN;
|
sk->state = TCP_LISTEN;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
}
|
}
|
|
|
static int nr_create(struct socket *sock, int protocol)
|
static int nr_create(struct socket *sock, int protocol)
|
{
|
{
|
struct sock *sk;
|
struct sock *sk;
|
nr_cb *nr;
|
nr_cb *nr;
|
|
|
if (sock->type != SOCK_SEQPACKET || protocol != 0)
|
if (sock->type != SOCK_SEQPACKET || protocol != 0)
|
return -ESOCKTNOSUPPORT;
|
return -ESOCKTNOSUPPORT;
|
|
|
if ((sk = nr_alloc_sock()) == NULL)
|
if ((sk = nr_alloc_sock()) == NULL)
|
return -ENOMEM;
|
return -ENOMEM;
|
|
|
nr = sk->protinfo.nr;
|
nr = sk->protinfo.nr;
|
|
|
sock_init_data(sock, sk);
|
sock_init_data(sock, sk);
|
|
|
sock->ops = &nr_proto_ops;
|
sock->ops = &nr_proto_ops;
|
sk->protocol = protocol;
|
sk->protocol = protocol;
|
|
|
skb_queue_head_init(&nr->ack_queue);
|
skb_queue_head_init(&nr->ack_queue);
|
skb_queue_head_init(&nr->reseq_queue);
|
skb_queue_head_init(&nr->reseq_queue);
|
skb_queue_head_init(&nr->frag_queue);
|
skb_queue_head_init(&nr->frag_queue);
|
|
|
init_timer(&nr->t1timer);
|
init_timer(&nr->t1timer);
|
init_timer(&nr->t2timer);
|
init_timer(&nr->t2timer);
|
init_timer(&nr->t4timer);
|
init_timer(&nr->t4timer);
|
init_timer(&nr->idletimer);
|
init_timer(&nr->idletimer);
|
|
|
nr->t1 = sysctl_netrom_transport_timeout;
|
nr->t1 = sysctl_netrom_transport_timeout;
|
nr->t2 = sysctl_netrom_transport_acknowledge_delay;
|
nr->t2 = sysctl_netrom_transport_acknowledge_delay;
|
nr->n2 = sysctl_netrom_transport_maximum_tries;
|
nr->n2 = sysctl_netrom_transport_maximum_tries;
|
nr->t4 = sysctl_netrom_transport_busy_delay;
|
nr->t4 = sysctl_netrom_transport_busy_delay;
|
nr->idle = sysctl_netrom_transport_no_activity_timeout;
|
nr->idle = sysctl_netrom_transport_no_activity_timeout;
|
nr->window = sysctl_netrom_transport_requested_window_size;
|
nr->window = sysctl_netrom_transport_requested_window_size;
|
|
|
nr->bpqext = 1;
|
nr->bpqext = 1;
|
nr->state = NR_STATE_0;
|
nr->state = NR_STATE_0;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static struct sock *nr_make_new(struct sock *osk)
|
static struct sock *nr_make_new(struct sock *osk)
|
{
|
{
|
struct sock *sk;
|
struct sock *sk;
|
nr_cb *nr;
|
nr_cb *nr;
|
|
|
if (osk->type != SOCK_SEQPACKET)
|
if (osk->type != SOCK_SEQPACKET)
|
return NULL;
|
return NULL;
|
|
|
if ((sk = nr_alloc_sock()) == NULL)
|
if ((sk = nr_alloc_sock()) == NULL)
|
return NULL;
|
return NULL;
|
|
|
nr = sk->protinfo.nr;
|
nr = sk->protinfo.nr;
|
|
|
sock_init_data(NULL, sk);
|
sock_init_data(NULL, sk);
|
|
|
sk->type = osk->type;
|
sk->type = osk->type;
|
sk->socket = osk->socket;
|
sk->socket = osk->socket;
|
sk->priority = osk->priority;
|
sk->priority = osk->priority;
|
sk->protocol = osk->protocol;
|
sk->protocol = osk->protocol;
|
sk->rcvbuf = osk->rcvbuf;
|
sk->rcvbuf = osk->rcvbuf;
|
sk->sndbuf = osk->sndbuf;
|
sk->sndbuf = osk->sndbuf;
|
sk->debug = osk->debug;
|
sk->debug = osk->debug;
|
sk->state = TCP_ESTABLISHED;
|
sk->state = TCP_ESTABLISHED;
|
sk->sleep = osk->sleep;
|
sk->sleep = osk->sleep;
|
sk->zapped = osk->zapped;
|
sk->zapped = osk->zapped;
|
|
|
skb_queue_head_init(&nr->ack_queue);
|
skb_queue_head_init(&nr->ack_queue);
|
skb_queue_head_init(&nr->reseq_queue);
|
skb_queue_head_init(&nr->reseq_queue);
|
skb_queue_head_init(&nr->frag_queue);
|
skb_queue_head_init(&nr->frag_queue);
|
|
|
init_timer(&nr->t1timer);
|
init_timer(&nr->t1timer);
|
init_timer(&nr->t2timer);
|
init_timer(&nr->t2timer);
|
init_timer(&nr->t4timer);
|
init_timer(&nr->t4timer);
|
init_timer(&nr->idletimer);
|
init_timer(&nr->idletimer);
|
|
|
nr->t1 = osk->protinfo.nr->t1;
|
nr->t1 = osk->protinfo.nr->t1;
|
nr->t2 = osk->protinfo.nr->t2;
|
nr->t2 = osk->protinfo.nr->t2;
|
nr->n2 = osk->protinfo.nr->n2;
|
nr->n2 = osk->protinfo.nr->n2;
|
nr->t4 = osk->protinfo.nr->t4;
|
nr->t4 = osk->protinfo.nr->t4;
|
nr->idle = osk->protinfo.nr->idle;
|
nr->idle = osk->protinfo.nr->idle;
|
nr->window = osk->protinfo.nr->window;
|
nr->window = osk->protinfo.nr->window;
|
|
|
nr->device = osk->protinfo.nr->device;
|
nr->device = osk->protinfo.nr->device;
|
nr->bpqext = osk->protinfo.nr->bpqext;
|
nr->bpqext = osk->protinfo.nr->bpqext;
|
|
|
return sk;
|
return sk;
|
}
|
}
|
|
|
static int nr_release(struct socket *sock)
|
static int nr_release(struct socket *sock)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
|
|
if (sk == NULL) return 0;
|
if (sk == NULL) return 0;
|
|
|
switch (sk->protinfo.nr->state) {
|
switch (sk->protinfo.nr->state) {
|
|
|
case NR_STATE_0:
|
case NR_STATE_0:
|
case NR_STATE_1:
|
case NR_STATE_1:
|
case NR_STATE_2:
|
case NR_STATE_2:
|
nr_disconnect(sk, 0);
|
nr_disconnect(sk, 0);
|
nr_destroy_socket(sk);
|
nr_destroy_socket(sk);
|
break;
|
break;
|
|
|
case NR_STATE_3:
|
case NR_STATE_3:
|
nr_clear_queues(sk);
|
nr_clear_queues(sk);
|
sk->protinfo.nr->n2count = 0;
|
sk->protinfo.nr->n2count = 0;
|
nr_write_internal(sk, NR_DISCREQ);
|
nr_write_internal(sk, NR_DISCREQ);
|
nr_start_t1timer(sk);
|
nr_start_t1timer(sk);
|
nr_stop_t2timer(sk);
|
nr_stop_t2timer(sk);
|
nr_stop_t4timer(sk);
|
nr_stop_t4timer(sk);
|
nr_stop_idletimer(sk);
|
nr_stop_idletimer(sk);
|
sk->protinfo.nr->state = NR_STATE_2;
|
sk->protinfo.nr->state = NR_STATE_2;
|
sk->state = TCP_CLOSE;
|
sk->state = TCP_CLOSE;
|
sk->shutdown |= SEND_SHUTDOWN;
|
sk->shutdown |= SEND_SHUTDOWN;
|
sk->state_change(sk);
|
sk->state_change(sk);
|
sock_orphan(sk);
|
sock_orphan(sk);
|
sk->destroy = 1;
|
sk->destroy = 1;
|
break;
|
break;
|
|
|
default:
|
default:
|
sk->socket = NULL;
|
sk->socket = NULL;
|
break;
|
break;
|
}
|
}
|
|
|
sock->sk = NULL;
|
sock->sk = NULL;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int nr_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
|
static int nr_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
|
struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
|
struct net_device *dev;
|
struct net_device *dev;
|
ax25_address *user, *source;
|
ax25_address *user, *source;
|
|
|
if (sk->zapped == 0)
|
if (sk->zapped == 0)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (addr_len < sizeof(struct sockaddr_ax25) || addr_len > sizeof(struct
|
if (addr_len < sizeof(struct sockaddr_ax25) || addr_len > sizeof(struct
|
full_sockaddr_ax25))
|
full_sockaddr_ax25))
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (addr_len < (addr->fsa_ax25.sax25_ndigis * sizeof(ax25_address) + sizeof(struct sockaddr_ax25)))
|
if (addr_len < (addr->fsa_ax25.sax25_ndigis * sizeof(ax25_address) + sizeof(struct sockaddr_ax25)))
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (addr->fsa_ax25.sax25_family != AF_NETROM)
|
if (addr->fsa_ax25.sax25_family != AF_NETROM)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if ((dev = nr_dev_get(&addr->fsa_ax25.sax25_call)) == NULL) {
|
if ((dev = nr_dev_get(&addr->fsa_ax25.sax25_call)) == NULL) {
|
SOCK_DEBUG(sk, "NET/ROM: bind failed: invalid node callsign\n");
|
SOCK_DEBUG(sk, "NET/ROM: bind failed: invalid node callsign\n");
|
return -EADDRNOTAVAIL;
|
return -EADDRNOTAVAIL;
|
}
|
}
|
|
|
/*
|
/*
|
* Only the super user can set an arbitrary user callsign.
|
* Only the super user can set an arbitrary user callsign.
|
*/
|
*/
|
if (addr->fsa_ax25.sax25_ndigis == 1) {
|
if (addr->fsa_ax25.sax25_ndigis == 1) {
|
if (!capable(CAP_NET_BIND_SERVICE)) {
|
if (!capable(CAP_NET_BIND_SERVICE)) {
|
dev_put(dev);
|
dev_put(dev);
|
return -EACCES;
|
return -EACCES;
|
}
|
}
|
sk->protinfo.nr->user_addr = addr->fsa_digipeater[0];
|
sk->protinfo.nr->user_addr = addr->fsa_digipeater[0];
|
sk->protinfo.nr->source_addr = addr->fsa_ax25.sax25_call;
|
sk->protinfo.nr->source_addr = addr->fsa_ax25.sax25_call;
|
} else {
|
} else {
|
source = &addr->fsa_ax25.sax25_call;
|
source = &addr->fsa_ax25.sax25_call;
|
|
|
if ((user = ax25_findbyuid(current->euid)) == NULL) {
|
if ((user = ax25_findbyuid(current->euid)) == NULL) {
|
if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) {
|
if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) {
|
dev_put(dev);
|
dev_put(dev);
|
return -EPERM;
|
return -EPERM;
|
}
|
}
|
user = source;
|
user = source;
|
}
|
}
|
|
|
sk->protinfo.nr->user_addr = *user;
|
sk->protinfo.nr->user_addr = *user;
|
sk->protinfo.nr->source_addr = *source;
|
sk->protinfo.nr->source_addr = *source;
|
}
|
}
|
|
|
sk->protinfo.nr->device = dev;
|
sk->protinfo.nr->device = dev;
|
nr_insert_socket(sk);
|
nr_insert_socket(sk);
|
|
|
sk->zapped = 0;
|
sk->zapped = 0;
|
SOCK_DEBUG(sk, "NET/ROM: socket is bound\n");
|
SOCK_DEBUG(sk, "NET/ROM: socket is bound\n");
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int nr_connect(struct socket *sock, struct sockaddr *uaddr,
|
static int nr_connect(struct socket *sock, struct sockaddr *uaddr,
|
int addr_len, int flags)
|
int addr_len, int flags)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct sockaddr_ax25 *addr = (struct sockaddr_ax25 *)uaddr;
|
struct sockaddr_ax25 *addr = (struct sockaddr_ax25 *)uaddr;
|
ax25_address *user, *source = NULL;
|
ax25_address *user, *source = NULL;
|
struct net_device *dev;
|
struct net_device *dev;
|
|
|
if (sk->state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
|
if (sk->state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
|
sock->state = SS_CONNECTED;
|
sock->state = SS_CONNECTED;
|
return 0; /* Connect completed during a ERESTARTSYS event */
|
return 0; /* Connect completed during a ERESTARTSYS event */
|
}
|
}
|
|
|
if (sk->state == TCP_CLOSE && sock->state == SS_CONNECTING) {
|
if (sk->state == TCP_CLOSE && sock->state == SS_CONNECTING) {
|
sock->state = SS_UNCONNECTED;
|
sock->state = SS_UNCONNECTED;
|
return -ECONNREFUSED;
|
return -ECONNREFUSED;
|
}
|
}
|
|
|
if (sk->state == TCP_ESTABLISHED)
|
if (sk->state == TCP_ESTABLISHED)
|
return -EISCONN; /* No reconnect on a seqpacket socket */
|
return -EISCONN; /* No reconnect on a seqpacket socket */
|
|
|
sk->state = TCP_CLOSE;
|
sk->state = TCP_CLOSE;
|
sock->state = SS_UNCONNECTED;
|
sock->state = SS_UNCONNECTED;
|
|
|
if (addr_len != sizeof(struct sockaddr_ax25) && addr_len != sizeof(struct full_sockaddr_ax25))
|
if (addr_len != sizeof(struct sockaddr_ax25) && addr_len != sizeof(struct full_sockaddr_ax25))
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (addr->sax25_family != AF_NETROM)
|
if (addr->sax25_family != AF_NETROM)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (sk->zapped) { /* Must bind first - autobinding in this may or may not work */
|
if (sk->zapped) { /* Must bind first - autobinding in this may or may not work */
|
sk->zapped = 0;
|
sk->zapped = 0;
|
|
|
if ((dev = nr_dev_first()) == NULL)
|
if ((dev = nr_dev_first()) == NULL)
|
return -ENETUNREACH;
|
return -ENETUNREACH;
|
|
|
source = (ax25_address *)dev->dev_addr;
|
source = (ax25_address *)dev->dev_addr;
|
|
|
if ((user = ax25_findbyuid(current->euid)) == NULL) {
|
if ((user = ax25_findbyuid(current->euid)) == NULL) {
|
if (ax25_uid_policy && !capable(CAP_NET_ADMIN)) {
|
if (ax25_uid_policy && !capable(CAP_NET_ADMIN)) {
|
dev_put(dev);
|
dev_put(dev);
|
return -EPERM;
|
return -EPERM;
|
}
|
}
|
user = source;
|
user = source;
|
}
|
}
|
|
|
sk->protinfo.nr->user_addr = *user;
|
sk->protinfo.nr->user_addr = *user;
|
sk->protinfo.nr->source_addr = *source;
|
sk->protinfo.nr->source_addr = *source;
|
sk->protinfo.nr->device = dev;
|
sk->protinfo.nr->device = dev;
|
|
|
nr_insert_socket(sk); /* Finish the bind */
|
nr_insert_socket(sk); /* Finish the bind */
|
}
|
}
|
|
|
sk->protinfo.nr->dest_addr = addr->sax25_call;
|
sk->protinfo.nr->dest_addr = addr->sax25_call;
|
|
|
circuit = nr_find_next_circuit();
|
circuit = nr_find_next_circuit();
|
|
|
sk->protinfo.nr->my_index = circuit / 256;
|
sk->protinfo.nr->my_index = circuit / 256;
|
sk->protinfo.nr->my_id = circuit % 256;
|
sk->protinfo.nr->my_id = circuit % 256;
|
|
|
circuit++;
|
circuit++;
|
|
|
/* Move to connecting socket, start sending Connect Requests */
|
/* Move to connecting socket, start sending Connect Requests */
|
sock->state = SS_CONNECTING;
|
sock->state = SS_CONNECTING;
|
sk->state = TCP_SYN_SENT;
|
sk->state = TCP_SYN_SENT;
|
|
|
nr_establish_data_link(sk);
|
nr_establish_data_link(sk);
|
|
|
sk->protinfo.nr->state = NR_STATE_1;
|
sk->protinfo.nr->state = NR_STATE_1;
|
|
|
nr_start_heartbeat(sk);
|
nr_start_heartbeat(sk);
|
|
|
/* Now the loop */
|
/* Now the loop */
|
if (sk->state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
|
if (sk->state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
|
return -EINPROGRESS;
|
return -EINPROGRESS;
|
|
|
cli(); /* To avoid races on the sleep */
|
cli(); /* To avoid races on the sleep */
|
|
|
/*
|
/*
|
* A Connect Ack with Choke or timeout or failed routing will go to closed.
|
* A Connect Ack with Choke or timeout or failed routing will go to closed.
|
*/
|
*/
|
while (sk->state == TCP_SYN_SENT) {
|
while (sk->state == TCP_SYN_SENT) {
|
interruptible_sleep_on(sk->sleep);
|
interruptible_sleep_on(sk->sleep);
|
if (signal_pending(current)) {
|
if (signal_pending(current)) {
|
sti();
|
sti();
|
return -ERESTARTSYS;
|
return -ERESTARTSYS;
|
}
|
}
|
}
|
}
|
|
|
if (sk->state != TCP_ESTABLISHED) {
|
if (sk->state != TCP_ESTABLISHED) {
|
sti();
|
sti();
|
sock->state = SS_UNCONNECTED;
|
sock->state = SS_UNCONNECTED;
|
return sock_error(sk); /* Always set at this point */
|
return sock_error(sk); /* Always set at this point */
|
}
|
}
|
|
|
sock->state = SS_CONNECTED;
|
sock->state = SS_CONNECTED;
|
|
|
sti();
|
sti();
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int nr_accept(struct socket *sock, struct socket *newsock, int flags)
|
static int nr_accept(struct socket *sock, struct socket *newsock, int flags)
|
{
|
{
|
struct sock *sk;
|
struct sock *sk;
|
struct sock *newsk;
|
struct sock *newsk;
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
|
|
if ((sk = sock->sk) == NULL)
|
if ((sk = sock->sk) == NULL)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (sk->type != SOCK_SEQPACKET)
|
if (sk->type != SOCK_SEQPACKET)
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
|
|
if (sk->state != TCP_LISTEN)
|
if (sk->state != TCP_LISTEN)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
/*
|
/*
|
* The write queue this time is holding sockets ready to use
|
* The write queue this time is holding sockets ready to use
|
* hooked into the SABM we saved
|
* hooked into the SABM we saved
|
*/
|
*/
|
do {
|
do {
|
cli();
|
cli();
|
if ((skb = skb_dequeue(&sk->receive_queue)) == NULL) {
|
if ((skb = skb_dequeue(&sk->receive_queue)) == NULL) {
|
if (flags & O_NONBLOCK) {
|
if (flags & O_NONBLOCK) {
|
sti();
|
sti();
|
return -EWOULDBLOCK;
|
return -EWOULDBLOCK;
|
}
|
}
|
interruptible_sleep_on(sk->sleep);
|
interruptible_sleep_on(sk->sleep);
|
if (signal_pending(current)) {
|
if (signal_pending(current)) {
|
sti();
|
sti();
|
return -ERESTARTSYS;
|
return -ERESTARTSYS;
|
}
|
}
|
}
|
}
|
} while (skb == NULL);
|
} while (skb == NULL);
|
|
|
newsk = skb->sk;
|
newsk = skb->sk;
|
newsk->pair = NULL;
|
newsk->pair = NULL;
|
newsk->socket = newsock;
|
newsk->socket = newsock;
|
newsk->sleep = &newsock->wait;
|
newsk->sleep = &newsock->wait;
|
sti();
|
sti();
|
|
|
/* Now attach up the new socket */
|
/* Now attach up the new socket */
|
kfree_skb(skb);
|
kfree_skb(skb);
|
sk->ack_backlog--;
|
sk->ack_backlog--;
|
newsock->sk = newsk;
|
newsock->sk = newsk;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int nr_getname(struct socket *sock, struct sockaddr *uaddr,
|
static int nr_getname(struct socket *sock, struct sockaddr *uaddr,
|
int *uaddr_len, int peer)
|
int *uaddr_len, int peer)
|
{
|
{
|
struct full_sockaddr_ax25 *sax = (struct full_sockaddr_ax25 *)uaddr;
|
struct full_sockaddr_ax25 *sax = (struct full_sockaddr_ax25 *)uaddr;
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
|
|
if (peer != 0) {
|
if (peer != 0) {
|
if (sk->state != TCP_ESTABLISHED)
|
if (sk->state != TCP_ESTABLISHED)
|
return -ENOTCONN;
|
return -ENOTCONN;
|
sax->fsa_ax25.sax25_family = AF_NETROM;
|
sax->fsa_ax25.sax25_family = AF_NETROM;
|
sax->fsa_ax25.sax25_ndigis = 1;
|
sax->fsa_ax25.sax25_ndigis = 1;
|
sax->fsa_ax25.sax25_call = sk->protinfo.nr->user_addr;
|
sax->fsa_ax25.sax25_call = sk->protinfo.nr->user_addr;
|
sax->fsa_digipeater[0] = sk->protinfo.nr->dest_addr;
|
sax->fsa_digipeater[0] = sk->protinfo.nr->dest_addr;
|
*uaddr_len = sizeof(struct full_sockaddr_ax25);
|
*uaddr_len = sizeof(struct full_sockaddr_ax25);
|
} else {
|
} else {
|
sax->fsa_ax25.sax25_family = AF_NETROM;
|
sax->fsa_ax25.sax25_family = AF_NETROM;
|
sax->fsa_ax25.sax25_ndigis = 0;
|
sax->fsa_ax25.sax25_ndigis = 0;
|
sax->fsa_ax25.sax25_call = sk->protinfo.nr->source_addr;
|
sax->fsa_ax25.sax25_call = sk->protinfo.nr->source_addr;
|
*uaddr_len = sizeof(struct sockaddr_ax25);
|
*uaddr_len = sizeof(struct sockaddr_ax25);
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
int nr_rx_frame(struct sk_buff *skb, struct net_device *dev)
|
int nr_rx_frame(struct sk_buff *skb, struct net_device *dev)
|
{
|
{
|
struct sock *sk;
|
struct sock *sk;
|
struct sock *make;
|
struct sock *make;
|
ax25_address *src, *dest, *user;
|
ax25_address *src, *dest, *user;
|
unsigned short circuit_index, circuit_id;
|
unsigned short circuit_index, circuit_id;
|
unsigned short peer_circuit_index, peer_circuit_id;
|
unsigned short peer_circuit_index, peer_circuit_id;
|
unsigned short frametype, flags, window, timeout;
|
unsigned short frametype, flags, window, timeout;
|
|
|
skb->sk = NULL; /* Initially we don't know who it's for */
|
skb->sk = NULL; /* Initially we don't know who it's for */
|
|
|
/*
|
/*
|
* skb->data points to the netrom frame start
|
* skb->data points to the netrom frame start
|
*/
|
*/
|
|
|
src = (ax25_address *)(skb->data + 0);
|
src = (ax25_address *)(skb->data + 0);
|
dest = (ax25_address *)(skb->data + 7);
|
dest = (ax25_address *)(skb->data + 7);
|
|
|
circuit_index = skb->data[15];
|
circuit_index = skb->data[15];
|
circuit_id = skb->data[16];
|
circuit_id = skb->data[16];
|
peer_circuit_index = skb->data[17];
|
peer_circuit_index = skb->data[17];
|
peer_circuit_id = skb->data[18];
|
peer_circuit_id = skb->data[18];
|
frametype = skb->data[19] & 0x0F;
|
frametype = skb->data[19] & 0x0F;
|
flags = skb->data[19] & 0xF0;
|
flags = skb->data[19] & 0xF0;
|
|
|
switch (frametype) {
|
switch (frametype) {
|
case NR_PROTOEXT:
|
case NR_PROTOEXT:
|
#ifdef CONFIG_INET
|
#ifdef CONFIG_INET
|
/*
|
/*
|
* Check for an incoming IP over NET/ROM frame.
|
* Check for an incoming IP over NET/ROM frame.
|
*/
|
*/
|
if (circuit_index == NR_PROTO_IP && circuit_id == NR_PROTO_IP) {
|
if (circuit_index == NR_PROTO_IP && circuit_id == NR_PROTO_IP) {
|
skb_pull(skb, NR_NETWORK_LEN + NR_TRANSPORT_LEN);
|
skb_pull(skb, NR_NETWORK_LEN + NR_TRANSPORT_LEN);
|
skb->h.raw = skb->data;
|
skb->h.raw = skb->data;
|
|
|
return nr_rx_ip(skb, dev);
|
return nr_rx_ip(skb, dev);
|
}
|
}
|
#endif
|
#endif
|
return 0;
|
return 0;
|
|
|
case NR_CONNREQ:
|
case NR_CONNREQ:
|
case NR_CONNACK:
|
case NR_CONNACK:
|
case NR_DISCREQ:
|
case NR_DISCREQ:
|
case NR_DISCACK:
|
case NR_DISCACK:
|
case NR_INFO:
|
case NR_INFO:
|
case NR_INFOACK:
|
case NR_INFOACK:
|
/*
|
/*
|
* These frame types we understand.
|
* These frame types we understand.
|
*/
|
*/
|
break;
|
break;
|
|
|
default:
|
default:
|
/*
|
/*
|
* Everything else is ignored.
|
* Everything else is ignored.
|
*/
|
*/
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* Find an existing socket connection, based on circuit ID, if it's
|
* Find an existing socket connection, based on circuit ID, if it's
|
* a Connect Request base it on their circuit ID.
|
* a Connect Request base it on their circuit ID.
|
*
|
*
|
* Circuit ID 0/0 is not valid but it could still be a "reset" for a
|
* Circuit ID 0/0 is not valid but it could still be a "reset" for a
|
* circuit that no longer exists at the other end ...
|
* circuit that no longer exists at the other end ...
|
*/
|
*/
|
|
|
sk = NULL;
|
sk = NULL;
|
|
|
if (circuit_index == 0 && circuit_id == 0) {
|
if (circuit_index == 0 && circuit_id == 0) {
|
if (frametype == NR_CONNACK && flags == NR_CHOKE_FLAG)
|
if (frametype == NR_CONNACK && flags == NR_CHOKE_FLAG)
|
sk = nr_find_peer(peer_circuit_index, peer_circuit_id, src);
|
sk = nr_find_peer(peer_circuit_index, peer_circuit_id, src);
|
} else {
|
} else {
|
if (frametype == NR_CONNREQ)
|
if (frametype == NR_CONNREQ)
|
sk = nr_find_peer(circuit_index, circuit_id, src);
|
sk = nr_find_peer(circuit_index, circuit_id, src);
|
else
|
else
|
sk = nr_find_socket(circuit_index, circuit_id);
|
sk = nr_find_socket(circuit_index, circuit_id);
|
}
|
}
|
|
|
if (sk != NULL) {
|
if (sk != NULL) {
|
skb->h.raw = skb->data;
|
skb->h.raw = skb->data;
|
|
|
if (frametype == NR_CONNACK && skb->len == 22)
|
if (frametype == NR_CONNACK && skb->len == 22)
|
sk->protinfo.nr->bpqext = 1;
|
sk->protinfo.nr->bpqext = 1;
|
else
|
else
|
sk->protinfo.nr->bpqext = 0;
|
sk->protinfo.nr->bpqext = 0;
|
|
|
return nr_process_rx_frame(sk, skb);
|
return nr_process_rx_frame(sk, skb);
|
}
|
}
|
|
|
/*
|
/*
|
* Now it should be a CONNREQ.
|
* Now it should be a CONNREQ.
|
*/
|
*/
|
if (frametype != NR_CONNREQ) {
|
if (frametype != NR_CONNREQ) {
|
/*
|
/*
|
* Here it would be nice to be able to send a reset but
|
* Here it would be nice to be able to send a reset but
|
* NET/ROM doesn't have one. The following hack would
|
* NET/ROM doesn't have one. The following hack would
|
* have been a way to extend the protocol but apparently
|
* have been a way to extend the protocol but apparently
|
* it kills BPQ boxes... :-(
|
* it kills BPQ boxes... :-(
|
*/
|
*/
|
#if 0
|
#if 0
|
/*
|
/*
|
* Never reply to a CONNACK/CHOKE.
|
* Never reply to a CONNACK/CHOKE.
|
*/
|
*/
|
if (frametype != NR_CONNACK || flags != NR_CHOKE_FLAG)
|
if (frametype != NR_CONNACK || flags != NR_CHOKE_FLAG)
|
nr_transmit_refusal(skb, 1);
|
nr_transmit_refusal(skb, 1);
|
#endif
|
#endif
|
return 0;
|
return 0;
|
}
|
}
|
|
|
sk = nr_find_listener(dest);
|
sk = nr_find_listener(dest);
|
|
|
user = (ax25_address *)(skb->data + 21);
|
user = (ax25_address *)(skb->data + 21);
|
|
|
if (sk == NULL || sk->ack_backlog == sk->max_ack_backlog || (make = nr_make_new(sk)) == NULL) {
|
if (sk == NULL || sk->ack_backlog == sk->max_ack_backlog || (make = nr_make_new(sk)) == NULL) {
|
nr_transmit_refusal(skb, 0);
|
nr_transmit_refusal(skb, 0);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
window = skb->data[20];
|
window = skb->data[20];
|
|
|
skb->sk = make;
|
skb->sk = make;
|
make->state = TCP_ESTABLISHED;
|
make->state = TCP_ESTABLISHED;
|
|
|
/* Fill in his circuit details */
|
/* Fill in his circuit details */
|
make->protinfo.nr->source_addr = *dest;
|
make->protinfo.nr->source_addr = *dest;
|
make->protinfo.nr->dest_addr = *src;
|
make->protinfo.nr->dest_addr = *src;
|
make->protinfo.nr->user_addr = *user;
|
make->protinfo.nr->user_addr = *user;
|
|
|
make->protinfo.nr->your_index = circuit_index;
|
make->protinfo.nr->your_index = circuit_index;
|
make->protinfo.nr->your_id = circuit_id;
|
make->protinfo.nr->your_id = circuit_id;
|
|
|
circuit = nr_find_next_circuit();
|
circuit = nr_find_next_circuit();
|
|
|
make->protinfo.nr->my_index = circuit / 256;
|
make->protinfo.nr->my_index = circuit / 256;
|
make->protinfo.nr->my_id = circuit % 256;
|
make->protinfo.nr->my_id = circuit % 256;
|
|
|
circuit++;
|
circuit++;
|
|
|
/* Window negotiation */
|
/* Window negotiation */
|
if (window < make->protinfo.nr->window)
|
if (window < make->protinfo.nr->window)
|
make->protinfo.nr->window = window;
|
make->protinfo.nr->window = window;
|
|
|
/* L4 timeout negotiation */
|
/* L4 timeout negotiation */
|
if (skb->len == 37) {
|
if (skb->len == 37) {
|
timeout = skb->data[36] * 256 + skb->data[35];
|
timeout = skb->data[36] * 256 + skb->data[35];
|
if (timeout * HZ < make->protinfo.nr->t1)
|
if (timeout * HZ < make->protinfo.nr->t1)
|
make->protinfo.nr->t1 = timeout * HZ;
|
make->protinfo.nr->t1 = timeout * HZ;
|
make->protinfo.nr->bpqext = 1;
|
make->protinfo.nr->bpqext = 1;
|
} else {
|
} else {
|
make->protinfo.nr->bpqext = 0;
|
make->protinfo.nr->bpqext = 0;
|
}
|
}
|
|
|
nr_write_internal(make, NR_CONNACK);
|
nr_write_internal(make, NR_CONNACK);
|
|
|
make->protinfo.nr->condition = 0x00;
|
make->protinfo.nr->condition = 0x00;
|
make->protinfo.nr->vs = 0;
|
make->protinfo.nr->vs = 0;
|
make->protinfo.nr->va = 0;
|
make->protinfo.nr->va = 0;
|
make->protinfo.nr->vr = 0;
|
make->protinfo.nr->vr = 0;
|
make->protinfo.nr->vl = 0;
|
make->protinfo.nr->vl = 0;
|
make->protinfo.nr->state = NR_STATE_3;
|
make->protinfo.nr->state = NR_STATE_3;
|
sk->ack_backlog++;
|
sk->ack_backlog++;
|
make->pair = sk;
|
make->pair = sk;
|
|
|
dev_hold(make->protinfo.nr->device);
|
dev_hold(make->protinfo.nr->device);
|
|
|
nr_insert_socket(make);
|
nr_insert_socket(make);
|
|
|
skb_queue_head(&sk->receive_queue, skb);
|
skb_queue_head(&sk->receive_queue, skb);
|
|
|
nr_start_heartbeat(make);
|
nr_start_heartbeat(make);
|
nr_start_idletimer(make);
|
nr_start_idletimer(make);
|
|
|
if (!sk->dead)
|
if (!sk->dead)
|
sk->data_ready(sk, skb->len);
|
sk->data_ready(sk, skb->len);
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
static int nr_sendmsg(struct socket *sock, struct msghdr *msg, int len, struct scm_cookie *scm)
|
static int nr_sendmsg(struct socket *sock, struct msghdr *msg, int len, struct scm_cookie *scm)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
|
struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
|
int err;
|
int err;
|
struct sockaddr_ax25 sax;
|
struct sockaddr_ax25 sax;
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
unsigned char *asmptr;
|
unsigned char *asmptr;
|
int size;
|
int size;
|
|
|
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR))
|
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR))
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (sk->zapped)
|
if (sk->zapped)
|
return -EADDRNOTAVAIL;
|
return -EADDRNOTAVAIL;
|
|
|
if (sk->shutdown & SEND_SHUTDOWN) {
|
if (sk->shutdown & SEND_SHUTDOWN) {
|
send_sig(SIGPIPE, current, 0);
|
send_sig(SIGPIPE, current, 0);
|
return -EPIPE;
|
return -EPIPE;
|
}
|
}
|
|
|
if (sk->protinfo.nr->device == NULL)
|
if (sk->protinfo.nr->device == NULL)
|
return -ENETUNREACH;
|
return -ENETUNREACH;
|
|
|
if (usax) {
|
if (usax) {
|
if (msg->msg_namelen < sizeof(sax))
|
if (msg->msg_namelen < sizeof(sax))
|
return -EINVAL;
|
return -EINVAL;
|
sax = *usax;
|
sax = *usax;
|
if (ax25cmp(&sk->protinfo.nr->dest_addr, &sax.sax25_call) != 0)
|
if (ax25cmp(&sk->protinfo.nr->dest_addr, &sax.sax25_call) != 0)
|
return -EISCONN;
|
return -EISCONN;
|
if (sax.sax25_family != AF_NETROM)
|
if (sax.sax25_family != AF_NETROM)
|
return -EINVAL;
|
return -EINVAL;
|
} else {
|
} else {
|
if (sk->state != TCP_ESTABLISHED)
|
if (sk->state != TCP_ESTABLISHED)
|
return -ENOTCONN;
|
return -ENOTCONN;
|
sax.sax25_family = AF_NETROM;
|
sax.sax25_family = AF_NETROM;
|
sax.sax25_call = sk->protinfo.nr->dest_addr;
|
sax.sax25_call = sk->protinfo.nr->dest_addr;
|
}
|
}
|
|
|
SOCK_DEBUG(sk, "NET/ROM: sendto: Addresses built.\n");
|
SOCK_DEBUG(sk, "NET/ROM: sendto: Addresses built.\n");
|
|
|
/* Build a packet */
|
/* Build a packet */
|
SOCK_DEBUG(sk, "NET/ROM: sendto: building packet.\n");
|
SOCK_DEBUG(sk, "NET/ROM: sendto: building packet.\n");
|
size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + NR_NETWORK_LEN + NR_TRANSPORT_LEN;
|
size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + NR_NETWORK_LEN + NR_TRANSPORT_LEN;
|
|
|
if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
|
if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
|
return err;
|
return err;
|
|
|
skb_reserve(skb, size - len);
|
skb_reserve(skb, size - len);
|
|
|
/*
|
/*
|
* Push down the NET/ROM header
|
* Push down the NET/ROM header
|
*/
|
*/
|
|
|
asmptr = skb_push(skb, NR_TRANSPORT_LEN);
|
asmptr = skb_push(skb, NR_TRANSPORT_LEN);
|
SOCK_DEBUG(sk, "Building NET/ROM Header.\n");
|
SOCK_DEBUG(sk, "Building NET/ROM Header.\n");
|
|
|
/* Build a NET/ROM Transport header */
|
/* Build a NET/ROM Transport header */
|
|
|
*asmptr++ = sk->protinfo.nr->your_index;
|
*asmptr++ = sk->protinfo.nr->your_index;
|
*asmptr++ = sk->protinfo.nr->your_id;
|
*asmptr++ = sk->protinfo.nr->your_id;
|
*asmptr++ = 0; /* To be filled in later */
|
*asmptr++ = 0; /* To be filled in later */
|
*asmptr++ = 0; /* Ditto */
|
*asmptr++ = 0; /* Ditto */
|
*asmptr++ = NR_INFO;
|
*asmptr++ = NR_INFO;
|
SOCK_DEBUG(sk, "Built header.\n");
|
SOCK_DEBUG(sk, "Built header.\n");
|
|
|
/*
|
/*
|
* Put the data on the end
|
* Put the data on the end
|
*/
|
*/
|
|
|
skb->h.raw = skb_put(skb, len);
|
skb->h.raw = skb_put(skb, len);
|
|
|
asmptr = skb->h.raw;
|
asmptr = skb->h.raw;
|
SOCK_DEBUG(sk, "NET/ROM: Appending user data\n");
|
SOCK_DEBUG(sk, "NET/ROM: Appending user data\n");
|
|
|
/* User data follows immediately after the NET/ROM transport header */
|
/* User data follows immediately after the NET/ROM transport header */
|
memcpy_fromiovec(asmptr, msg->msg_iov, len);
|
memcpy_fromiovec(asmptr, msg->msg_iov, len);
|
SOCK_DEBUG(sk, "NET/ROM: Transmitting buffer\n");
|
SOCK_DEBUG(sk, "NET/ROM: Transmitting buffer\n");
|
|
|
if (sk->state != TCP_ESTABLISHED) {
|
if (sk->state != TCP_ESTABLISHED) {
|
kfree_skb(skb);
|
kfree_skb(skb);
|
return -ENOTCONN;
|
return -ENOTCONN;
|
}
|
}
|
|
|
nr_output(sk, skb); /* Shove it onto the queue */
|
nr_output(sk, skb); /* Shove it onto the queue */
|
|
|
return len;
|
return len;
|
}
|
}
|
|
|
static int nr_recvmsg(struct socket *sock, struct msghdr *msg, int size,
|
static int nr_recvmsg(struct socket *sock, struct msghdr *msg, int size,
|
int flags, struct scm_cookie *scm)
|
int flags, struct scm_cookie *scm)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
|
struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
|
int copied;
|
int copied;
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
int er;
|
int er;
|
|
|
/*
|
/*
|
* This works for seqpacket too. The receiver has ordered the queue for
|
* This works for seqpacket too. The receiver has ordered the queue for
|
* us! We do one quick check first though
|
* us! We do one quick check first though
|
*/
|
*/
|
|
|
if (sk->state != TCP_ESTABLISHED)
|
if (sk->state != TCP_ESTABLISHED)
|
return -ENOTCONN;
|
return -ENOTCONN;
|
|
|
/* Now we can treat all alike */
|
/* Now we can treat all alike */
|
if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
|
if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
|
return er;
|
return er;
|
|
|
skb->h.raw = skb->data;
|
skb->h.raw = skb->data;
|
copied = skb->len;
|
copied = skb->len;
|
|
|
if (copied > size) {
|
if (copied > size) {
|
copied = size;
|
copied = size;
|
msg->msg_flags |= MSG_TRUNC;
|
msg->msg_flags |= MSG_TRUNC;
|
}
|
}
|
|
|
skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
|
skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
|
|
|
if (sax != NULL) {
|
if (sax != NULL) {
|
sax->sax25_family = AF_NETROM;
|
sax->sax25_family = AF_NETROM;
|
memcpy(sax->sax25_call.ax25_call, skb->data + 7, AX25_ADDR_LEN);
|
memcpy(sax->sax25_call.ax25_call, skb->data + 7, AX25_ADDR_LEN);
|
}
|
}
|
|
|
msg->msg_namelen = sizeof(*sax);
|
msg->msg_namelen = sizeof(*sax);
|
|
|
skb_free_datagram(sk, skb);
|
skb_free_datagram(sk, skb);
|
|
|
return copied;
|
return copied;
|
}
|
}
|
|
|
|
|
static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
|
|
switch (cmd) {
|
switch (cmd) {
|
case TIOCOUTQ: {
|
case TIOCOUTQ: {
|
long amount;
|
long amount;
|
amount = sk->sndbuf - atomic_read(&sk->wmem_alloc);
|
amount = sk->sndbuf - atomic_read(&sk->wmem_alloc);
|
if (amount < 0)
|
if (amount < 0)
|
amount = 0;
|
amount = 0;
|
return put_user(amount, (int *)arg);
|
return put_user(amount, (int *)arg);
|
}
|
}
|
|
|
case TIOCINQ: {
|
case TIOCINQ: {
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
long amount = 0L;
|
long amount = 0L;
|
/* These two are safe on a single CPU system as only user tasks fiddle here */
|
/* These two are safe on a single CPU system as only user tasks fiddle here */
|
if ((skb = skb_peek(&sk->receive_queue)) != NULL)
|
if ((skb = skb_peek(&sk->receive_queue)) != NULL)
|
amount = skb->len;
|
amount = skb->len;
|
return put_user(amount, (int *)arg);
|
return put_user(amount, (int *)arg);
|
}
|
}
|
|
|
case SIOCGSTAMP:
|
case SIOCGSTAMP:
|
if (sk != NULL) {
|
if (sk != NULL) {
|
if (sk->stamp.tv_sec == 0)
|
if (sk->stamp.tv_sec == 0)
|
return -ENOENT;
|
return -ENOENT;
|
return copy_to_user((void *)arg, &sk->stamp, sizeof(struct timeval)) ? -EFAULT : 0;
|
return copy_to_user((void *)arg, &sk->stamp, sizeof(struct timeval)) ? -EFAULT : 0;
|
}
|
}
|
return -EINVAL;
|
return -EINVAL;
|
|
|
case SIOCGIFADDR:
|
case SIOCGIFADDR:
|
case SIOCSIFADDR:
|
case SIOCSIFADDR:
|
case SIOCGIFDSTADDR:
|
case SIOCGIFDSTADDR:
|
case SIOCSIFDSTADDR:
|
case SIOCSIFDSTADDR:
|
case SIOCGIFBRDADDR:
|
case SIOCGIFBRDADDR:
|
case SIOCSIFBRDADDR:
|
case SIOCSIFBRDADDR:
|
case SIOCGIFNETMASK:
|
case SIOCGIFNETMASK:
|
case SIOCSIFNETMASK:
|
case SIOCSIFNETMASK:
|
case SIOCGIFMETRIC:
|
case SIOCGIFMETRIC:
|
case SIOCSIFMETRIC:
|
case SIOCSIFMETRIC:
|
return -EINVAL;
|
return -EINVAL;
|
|
|
case SIOCADDRT:
|
case SIOCADDRT:
|
case SIOCDELRT:
|
case SIOCDELRT:
|
case SIOCNRDECOBS:
|
case SIOCNRDECOBS:
|
if (!capable(CAP_NET_ADMIN)) return -EPERM;
|
if (!capable(CAP_NET_ADMIN)) return -EPERM;
|
return nr_rt_ioctl(cmd, (void *)arg);
|
return nr_rt_ioctl(cmd, (void *)arg);
|
|
|
default:
|
default:
|
return dev_ioctl(cmd, (void *)arg);
|
return dev_ioctl(cmd, (void *)arg);
|
}
|
}
|
|
|
/*NOTREACHED*/
|
/*NOTREACHED*/
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int nr_get_info(char *buffer, char **start, off_t offset, int length)
|
static int nr_get_info(char *buffer, char **start, off_t offset, int length)
|
{
|
{
|
struct sock *s;
|
struct sock *s;
|
struct net_device *dev;
|
struct net_device *dev;
|
const char *devname;
|
const char *devname;
|
int len = 0;
|
int len = 0;
|
off_t pos = 0;
|
off_t pos = 0;
|
off_t begin = 0;
|
off_t begin = 0;
|
|
|
cli();
|
cli();
|
|
|
len += sprintf(buffer, "user_addr dest_node src_node dev my your st vs vr va t1 t2 t4 idle n2 wnd Snd-Q Rcv-Q inode\n");
|
len += sprintf(buffer, "user_addr dest_node src_node dev my your st vs vr va t1 t2 t4 idle n2 wnd Snd-Q Rcv-Q inode\n");
|
|
|
for (s = nr_list; s != NULL; s = s->next) {
|
for (s = nr_list; s != NULL; s = s->next) {
|
if ((dev = s->protinfo.nr->device) == NULL)
|
if ((dev = s->protinfo.nr->device) == NULL)
|
devname = "???";
|
devname = "???";
|
else
|
else
|
devname = dev->name;
|
devname = dev->name;
|
|
|
len += sprintf(buffer + len, "%-9s ",
|
len += sprintf(buffer + len, "%-9s ",
|
ax2asc(&s->protinfo.nr->user_addr));
|
ax2asc(&s->protinfo.nr->user_addr));
|
len += sprintf(buffer + len, "%-9s ",
|
len += sprintf(buffer + len, "%-9s ",
|
ax2asc(&s->protinfo.nr->dest_addr));
|
ax2asc(&s->protinfo.nr->dest_addr));
|
len += sprintf(buffer + len, "%-9s %-3s %02X/%02X %02X/%02X %2d %3d %3d %3d %3lu/%03lu %2lu/%02lu %3lu/%03lu %3lu/%03lu %2d/%02d %3d %5d %5d %ld\n",
|
len += sprintf(buffer + len, "%-9s %-3s %02X/%02X %02X/%02X %2d %3d %3d %3d %3lu/%03lu %2lu/%02lu %3lu/%03lu %3lu/%03lu %2d/%02d %3d %5d %5d %ld\n",
|
ax2asc(&s->protinfo.nr->source_addr),
|
ax2asc(&s->protinfo.nr->source_addr),
|
devname,
|
devname,
|
s->protinfo.nr->my_index,
|
s->protinfo.nr->my_index,
|
s->protinfo.nr->my_id,
|
s->protinfo.nr->my_id,
|
s->protinfo.nr->your_index,
|
s->protinfo.nr->your_index,
|
s->protinfo.nr->your_id,
|
s->protinfo.nr->your_id,
|
s->protinfo.nr->state,
|
s->protinfo.nr->state,
|
s->protinfo.nr->vs,
|
s->protinfo.nr->vs,
|
s->protinfo.nr->vr,
|
s->protinfo.nr->vr,
|
s->protinfo.nr->va,
|
s->protinfo.nr->va,
|
ax25_display_timer(&s->protinfo.nr->t1timer) / HZ,
|
ax25_display_timer(&s->protinfo.nr->t1timer) / HZ,
|
s->protinfo.nr->t1 / HZ,
|
s->protinfo.nr->t1 / HZ,
|
ax25_display_timer(&s->protinfo.nr->t2timer) / HZ,
|
ax25_display_timer(&s->protinfo.nr->t2timer) / HZ,
|
s->protinfo.nr->t2 / HZ,
|
s->protinfo.nr->t2 / HZ,
|
ax25_display_timer(&s->protinfo.nr->t4timer) / HZ,
|
ax25_display_timer(&s->protinfo.nr->t4timer) / HZ,
|
s->protinfo.nr->t4 / HZ,
|
s->protinfo.nr->t4 / HZ,
|
ax25_display_timer(&s->protinfo.nr->idletimer) / (60 * HZ),
|
ax25_display_timer(&s->protinfo.nr->idletimer) / (60 * HZ),
|
s->protinfo.nr->idle / (60 * HZ),
|
s->protinfo.nr->idle / (60 * HZ),
|
s->protinfo.nr->n2count,
|
s->protinfo.nr->n2count,
|
s->protinfo.nr->n2,
|
s->protinfo.nr->n2,
|
s->protinfo.nr->window,
|
s->protinfo.nr->window,
|
atomic_read(&s->wmem_alloc),
|
atomic_read(&s->wmem_alloc),
|
atomic_read(&s->rmem_alloc),
|
atomic_read(&s->rmem_alloc),
|
s->socket != NULL ? s->socket->inode->i_ino : 0L);
|
s->socket != NULL ? s->socket->inode->i_ino : 0L);
|
|
|
pos = begin + len;
|
pos = begin + len;
|
|
|
if (pos < offset) {
|
if (pos < offset) {
|
len = 0;
|
len = 0;
|
begin = pos;
|
begin = pos;
|
}
|
}
|
|
|
if (pos > offset + length)
|
if (pos > offset + length)
|
break;
|
break;
|
}
|
}
|
|
|
sti();
|
sti();
|
|
|
*start = buffer + (offset - begin);
|
*start = buffer + (offset - begin);
|
len -= (offset - begin);
|
len -= (offset - begin);
|
|
|
if (len > length) len = length;
|
if (len > length) len = length;
|
|
|
return(len);
|
return(len);
|
}
|
}
|
|
|
static struct net_proto_family nr_family_ops = {
|
static struct net_proto_family nr_family_ops = {
|
family: PF_NETROM,
|
family: PF_NETROM,
|
create: nr_create,
|
create: nr_create,
|
};
|
};
|
|
|
static struct proto_ops SOCKOPS_WRAPPED(nr_proto_ops) = {
|
static struct proto_ops SOCKOPS_WRAPPED(nr_proto_ops) = {
|
family: PF_NETROM,
|
family: PF_NETROM,
|
|
|
release: nr_release,
|
release: nr_release,
|
bind: nr_bind,
|
bind: nr_bind,
|
connect: nr_connect,
|
connect: nr_connect,
|
socketpair: sock_no_socketpair,
|
socketpair: sock_no_socketpair,
|
accept: nr_accept,
|
accept: nr_accept,
|
getname: nr_getname,
|
getname: nr_getname,
|
poll: datagram_poll,
|
poll: datagram_poll,
|
ioctl: nr_ioctl,
|
ioctl: nr_ioctl,
|
listen: nr_listen,
|
listen: nr_listen,
|
shutdown: sock_no_shutdown,
|
shutdown: sock_no_shutdown,
|
setsockopt: nr_setsockopt,
|
setsockopt: nr_setsockopt,
|
getsockopt: nr_getsockopt,
|
getsockopt: nr_getsockopt,
|
sendmsg: nr_sendmsg,
|
sendmsg: nr_sendmsg,
|
recvmsg: nr_recvmsg,
|
recvmsg: nr_recvmsg,
|
mmap: sock_no_mmap,
|
mmap: sock_no_mmap,
|
sendpage: sock_no_sendpage,
|
sendpage: sock_no_sendpage,
|
};
|
};
|
|
|
#include <linux/smp_lock.h>
|
#include <linux/smp_lock.h>
|
SOCKOPS_WRAP(nr_proto, PF_NETROM);
|
SOCKOPS_WRAP(nr_proto, PF_NETROM);
|
|
|
static struct notifier_block nr_dev_notifier = {
|
static struct notifier_block nr_dev_notifier = {
|
notifier_call: nr_device_event,
|
notifier_call: nr_device_event,
|
};
|
};
|
|
|
static struct net_device *dev_nr;
|
static struct net_device *dev_nr;
|
|
|
static char banner[] __initdata = KERN_INFO "G4KLX NET/ROM for Linux. Version 0.7 for AX25.037 Linux 2.4\n";
|
static char banner[] __initdata = KERN_INFO "G4KLX NET/ROM for Linux. Version 0.7 for AX25.037 Linux 2.4\n";
|
|
|
static int __init nr_proto_init(void)
|
static int __init nr_proto_init(void)
|
{
|
{
|
int i;
|
int i;
|
|
|
if (nr_ndevs > 0x7fffffff/sizeof(struct net_device)) {
|
if (nr_ndevs > 0x7fffffff/sizeof(struct net_device)) {
|
printk(KERN_ERR "NET/ROM: nr_proto_init - nr_ndevs parameter to large\n");
|
printk(KERN_ERR "NET/ROM: nr_proto_init - nr_ndevs parameter to large\n");
|
return -1;
|
return -1;
|
}
|
}
|
|
|
if ((dev_nr = kmalloc(nr_ndevs * sizeof(struct net_device), GFP_KERNEL)) == NULL) {
|
if ((dev_nr = kmalloc(nr_ndevs * sizeof(struct net_device), GFP_KERNEL)) == NULL) {
|
printk(KERN_ERR "NET/ROM: nr_proto_init - unable to allocate device structure\n");
|
printk(KERN_ERR "NET/ROM: nr_proto_init - unable to allocate device structure\n");
|
return -1;
|
return -1;
|
}
|
}
|
|
|
memset(dev_nr, 0x00, nr_ndevs * sizeof(struct net_device));
|
memset(dev_nr, 0x00, nr_ndevs * sizeof(struct net_device));
|
|
|
for (i = 0; i < nr_ndevs; i++) {
|
for (i = 0; i < nr_ndevs; i++) {
|
sprintf(dev_nr[i].name, "nr%d", i);
|
sprintf(dev_nr[i].name, "nr%d", i);
|
dev_nr[i].init = nr_init;
|
dev_nr[i].init = nr_init;
|
register_netdev(&dev_nr[i]);
|
register_netdev(&dev_nr[i]);
|
}
|
}
|
|
|
sock_register(&nr_family_ops);
|
sock_register(&nr_family_ops);
|
register_netdevice_notifier(&nr_dev_notifier);
|
register_netdevice_notifier(&nr_dev_notifier);
|
printk(banner);
|
printk(banner);
|
|
|
ax25_protocol_register(AX25_P_NETROM, nr_route_frame);
|
ax25_protocol_register(AX25_P_NETROM, nr_route_frame);
|
ax25_linkfail_register(nr_link_failed);
|
ax25_linkfail_register(nr_link_failed);
|
|
|
#ifdef CONFIG_SYSCTL
|
#ifdef CONFIG_SYSCTL
|
nr_register_sysctl();
|
nr_register_sysctl();
|
#endif
|
#endif
|
|
|
nr_loopback_init();
|
nr_loopback_init();
|
|
|
proc_net_create("nr", 0, nr_get_info);
|
proc_net_create("nr", 0, nr_get_info);
|
proc_net_create("nr_neigh", 0, nr_neigh_get_info);
|
proc_net_create("nr_neigh", 0, nr_neigh_get_info);
|
proc_net_create("nr_nodes", 0, nr_nodes_get_info);
|
proc_net_create("nr_nodes", 0, nr_nodes_get_info);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
module_init(nr_proto_init);
|
module_init(nr_proto_init);
|
|
|
|
|
EXPORT_NO_SYMBOLS;
|
EXPORT_NO_SYMBOLS;
|
|
|
MODULE_PARM(nr_ndevs, "i");
|
MODULE_PARM(nr_ndevs, "i");
|
MODULE_PARM_DESC(nr_ndevs, "number of NET/ROM devices");
|
MODULE_PARM_DESC(nr_ndevs, "number of NET/ROM devices");
|
|
|
MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
|
MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
|
MODULE_DESCRIPTION("The amateur radio NET/ROM network and transport layer protocol");
|
MODULE_DESCRIPTION("The amateur radio NET/ROM network and transport layer protocol");
|
MODULE_LICENSE("GPL");
|
MODULE_LICENSE("GPL");
|
|
|
static void __exit nr_exit(void)
|
static void __exit nr_exit(void)
|
{
|
{
|
int i;
|
int i;
|
|
|
proc_net_remove("nr");
|
proc_net_remove("nr");
|
proc_net_remove("nr_neigh");
|
proc_net_remove("nr_neigh");
|
proc_net_remove("nr_nodes");
|
proc_net_remove("nr_nodes");
|
nr_loopback_clear();
|
nr_loopback_clear();
|
|
|
nr_rt_free();
|
nr_rt_free();
|
|
|
ax25_protocol_release(AX25_P_NETROM);
|
ax25_protocol_release(AX25_P_NETROM);
|
ax25_linkfail_release(nr_link_failed);
|
ax25_linkfail_release(nr_link_failed);
|
|
|
unregister_netdevice_notifier(&nr_dev_notifier);
|
unregister_netdevice_notifier(&nr_dev_notifier);
|
|
|
#ifdef CONFIG_SYSCTL
|
#ifdef CONFIG_SYSCTL
|
nr_unregister_sysctl();
|
nr_unregister_sysctl();
|
#endif
|
#endif
|
sock_unregister(PF_NETROM);
|
sock_unregister(PF_NETROM);
|
|
|
for (i = 0; i < nr_ndevs; i++) {
|
for (i = 0; i < nr_ndevs; i++) {
|
if (dev_nr[i].priv != NULL) {
|
if (dev_nr[i].priv != NULL) {
|
kfree(dev_nr[i].priv);
|
kfree(dev_nr[i].priv);
|
dev_nr[i].priv = NULL;
|
dev_nr[i].priv = NULL;
|
unregister_netdev(&dev_nr[i]);
|
unregister_netdev(&dev_nr[i]);
|
}
|
}
|
}
|
}
|
|
|
kfree(dev_nr);
|
kfree(dev_nr);
|
}
|
}
|
module_exit(nr_exit);
|
module_exit(nr_exit);
|
|
|
