^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) Steven Whitehouse GW7RRM (stevew@acm.org)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) Joerg Reuter DL1BKE (jreuter@yaina.de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) Hans-Joachim Hetscher DD8NE (dd8ne@bnv-bamberg.de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) Frederic Rible F1OAT (frible@teaser.fr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/capability.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/socket.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/in.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/sockios.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/net.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <net/ax25.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/inet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/if_arp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static ax25_route *ax25_route_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) DEFINE_RWLOCK(ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) void ax25_rt_device_down(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) ax25_route *s, *t, *ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) write_lock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) ax25_rt = ax25_route_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) while (ax25_rt != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) s = ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) ax25_rt = ax25_rt->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (s->dev == dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) if (ax25_route_list == s) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) ax25_route_list = s->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) kfree(s->digipeat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) kfree(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) for (t = ax25_route_list; t != NULL; t = t->next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (t->next == s) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) t->next = s->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) kfree(s->digipeat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) kfree(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) write_unlock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static int __must_check ax25_rt_add(struct ax25_routes_struct *route)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ax25_route *ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) ax25_dev *ax25_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if ((ax25_dev = ax25_addr_ax25dev(&route->port_addr)) == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (route->digi_count > AX25_MAX_DIGIS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) write_lock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) ax25_rt = ax25_route_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) while (ax25_rt != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (ax25cmp(&ax25_rt->callsign, &route->dest_addr) == 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) ax25_rt->dev == ax25_dev->dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) kfree(ax25_rt->digipeat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) ax25_rt->digipeat = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (route->digi_count != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if ((ax25_rt->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) write_unlock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) ax25_rt->digipeat->lastrepeat = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) ax25_rt->digipeat->ndigi = route->digi_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) for (i = 0; i < route->digi_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ax25_rt->digipeat->repeated[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) ax25_rt->digipeat->calls[i] = route->digi_addr[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) write_unlock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ax25_rt = ax25_rt->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if ((ax25_rt = kmalloc(sizeof(ax25_route), GFP_ATOMIC)) == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) write_unlock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) refcount_set(&ax25_rt->refcount, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) ax25_rt->callsign = route->dest_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) ax25_rt->dev = ax25_dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) ax25_rt->digipeat = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) ax25_rt->ip_mode = ' ';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (route->digi_count != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if ((ax25_rt->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) write_unlock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) kfree(ax25_rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) ax25_rt->digipeat->lastrepeat = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) ax25_rt->digipeat->ndigi = route->digi_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) for (i = 0; i < route->digi_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) ax25_rt->digipeat->repeated[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) ax25_rt->digipeat->calls[i] = route->digi_addr[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ax25_rt->next = ax25_route_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) ax25_route_list = ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) write_unlock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) void __ax25_put_route(ax25_route *ax25_rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) kfree(ax25_rt->digipeat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) kfree(ax25_rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static int ax25_rt_del(struct ax25_routes_struct *route)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) ax25_route *s, *t, *ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) ax25_dev *ax25_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) if ((ax25_dev = ax25_addr_ax25dev(&route->port_addr)) == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) write_lock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) ax25_rt = ax25_route_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) while (ax25_rt != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) s = ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) ax25_rt = ax25_rt->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (s->dev == ax25_dev->dev &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) ax25cmp(&route->dest_addr, &s->callsign) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (ax25_route_list == s) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) ax25_route_list = s->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) ax25_put_route(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) for (t = ax25_route_list; t != NULL; t = t->next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) if (t->next == s) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) t->next = s->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) ax25_put_route(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) write_unlock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static int ax25_rt_opt(struct ax25_route_opt_struct *rt_option)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) ax25_route *ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) ax25_dev *ax25_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if ((ax25_dev = ax25_addr_ax25dev(&rt_option->port_addr)) == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) write_lock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) ax25_rt = ax25_route_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) while (ax25_rt != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (ax25_rt->dev == ax25_dev->dev &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) ax25cmp(&rt_option->dest_addr, &ax25_rt->callsign) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) switch (rt_option->cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) case AX25_SET_RT_IPMODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) switch (rt_option->arg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) case ' ':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) case 'D':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) case 'V':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) ax25_rt->ip_mode = rt_option->arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) ax25_rt = ax25_rt->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) write_unlock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) int ax25_rt_ioctl(unsigned int cmd, void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct ax25_route_opt_struct rt_option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) struct ax25_routes_struct route;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) case SIOCADDRT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (copy_from_user(&route, arg, sizeof(route)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return ax25_rt_add(&route);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) case SIOCDELRT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (copy_from_user(&route, arg, sizeof(route)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return ax25_rt_del(&route);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) case SIOCAX25OPTRT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (copy_from_user(&rt_option, arg, sizeof(rt_option)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return ax25_rt_opt(&rt_option);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static void *ax25_rt_seq_start(struct seq_file *seq, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) __acquires(ax25_route_lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) struct ax25_route *ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) int i = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) read_lock(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (*pos == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return SEQ_START_TOKEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) for (ax25_rt = ax25_route_list; ax25_rt != NULL; ax25_rt = ax25_rt->next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (i == *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) ++i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) static void *ax25_rt_seq_next(struct seq_file *seq, void *v, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) ++*pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return (v == SEQ_START_TOKEN) ? ax25_route_list :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) ((struct ax25_route *) v)->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static void ax25_rt_seq_stop(struct seq_file *seq, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) __releases(ax25_route_lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) read_unlock(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static int ax25_rt_seq_show(struct seq_file *seq, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) char buf[11];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (v == SEQ_START_TOKEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) seq_puts(seq, "callsign dev mode digipeaters\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) struct ax25_route *ax25_rt = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) const char *callsign;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (ax25cmp(&ax25_rt->callsign, &null_ax25_address) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) callsign = "default";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) callsign = ax2asc(buf, &ax25_rt->callsign);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) seq_printf(seq, "%-9s %-4s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) callsign,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) ax25_rt->dev ? ax25_rt->dev->name : "???");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) switch (ax25_rt->ip_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) case 'V':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) seq_puts(seq, " vc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) case 'D':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) seq_puts(seq, " dg");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) seq_puts(seq, " *");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (ax25_rt->digipeat != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) for (i = 0; i < ax25_rt->digipeat->ndigi; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) seq_printf(seq, " %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) ax2asc(buf, &ax25_rt->digipeat->calls[i]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) seq_puts(seq, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) const struct seq_operations ax25_rt_seqops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) .start = ax25_rt_seq_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) .next = ax25_rt_seq_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) .stop = ax25_rt_seq_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) .show = ax25_rt_seq_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) * Find AX.25 route
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) * Only routes with a reference count of zero can be destroyed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) * Must be called with ax25_route_lock read locked.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) ax25_route *ax25_spe_rt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) ax25_route *ax25_def_rt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) ax25_route *ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) * Bind to the physical interface we heard them on, or the default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) * route if none is found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) for (ax25_rt = ax25_route_list; ax25_rt != NULL; ax25_rt = ax25_rt->next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (dev == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) if (ax25cmp(&ax25_rt->callsign, addr) == 0 && ax25_rt->dev != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) ax25_spe_rt = ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if (ax25cmp(&ax25_rt->callsign, &null_ax25_address) == 0 && ax25_rt->dev != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) ax25_def_rt = ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (ax25cmp(&ax25_rt->callsign, addr) == 0 && ax25_rt->dev == dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) ax25_spe_rt = ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (ax25cmp(&ax25_rt->callsign, &null_ax25_address) == 0 && ax25_rt->dev == dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) ax25_def_rt = ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) ax25_rt = ax25_def_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (ax25_spe_rt != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) ax25_rt = ax25_spe_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) * Adjust path: If you specify a default route and want to connect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) * a target on the digipeater path but w/o having a special route
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) * set before, the path has to be truncated from your target on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) static inline void ax25_adjust_path(ax25_address *addr, ax25_digi *digipeat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) int k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) for (k = 0; k < digipeat->ndigi; k++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (ax25cmp(addr, &digipeat->calls[k]) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) digipeat->ndigi = k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) * Find which interface to use.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) int ax25_rt_autobind(ax25_cb *ax25, ax25_address *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) ax25_uid_assoc *user;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) ax25_route *ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) ax25_route_lock_use();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) ax25_rt = ax25_get_route(addr, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) if (!ax25_rt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) ax25_route_lock_unuse();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) return -EHOSTUNREACH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if ((ax25->ax25_dev = ax25_dev_ax25dev(ax25_rt->dev)) == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) err = -EHOSTUNREACH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) goto put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) user = ax25_findbyuid(current_euid());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if (user) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) ax25->source_addr = user->call;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) ax25_uid_put(user);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) err = -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) goto put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) ax25->source_addr = *(ax25_address *)ax25->ax25_dev->dev->dev_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) if (ax25_rt->digipeat != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) ax25->digipeat = kmemdup(ax25_rt->digipeat, sizeof(ax25_digi),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if (ax25->digipeat == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) goto put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) ax25_adjust_path(addr, ax25->digipeat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) if (ax25->sk != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) local_bh_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) bh_lock_sock(ax25->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) sock_reset_flag(ax25->sk, SOCK_ZAPPED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) bh_unlock_sock(ax25->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) local_bh_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) ax25_route_lock_unuse();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) struct sk_buff *ax25_rt_build_path(struct sk_buff *skb, ax25_address *src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) ax25_address *dest, ax25_digi *digi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) struct sk_buff *skbn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) unsigned char *bp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) len = digi->ndigi * AX25_ADDR_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) if (skb_headroom(skb) < len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) if ((skbn = skb_realloc_headroom(skb, len)) == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) printk(KERN_CRIT "AX.25: ax25_dg_build_path - out of memory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (skb->sk != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) skb_set_owner_w(skbn, skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) consume_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) skb = skbn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) bp = skb_push(skb, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) ax25_addr_build(bp, src, dest, digi, AX25_COMMAND, AX25_MODULUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) return skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * Free all memory associated with routing structures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) void __exit ax25_rt_free(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) ax25_route *s, *ax25_rt = ax25_route_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) write_lock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) while (ax25_rt != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) s = ax25_rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) ax25_rt = ax25_rt->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) kfree(s->digipeat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) kfree(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) write_unlock_bh(&ax25_route_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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