4 * This code REQUIRES 2.1.15 or higher/ NET3.038
7 * This module is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
12 * Other kernels modules in this kit are generally BSD derived. See the copyright headers.
16 * AX.25 036 Jonathan(G4KLX) Split from ax25_route.c.
19 #include <linux/config.h>
20 #include <linux/errno.h>
21 #include <linux/types.h>
22 #include <linux/socket.h>
24 #include <linux/kernel.h>
25 #include <linux/sched.h>
26 #include <linux/timer.h>
27 #include <linux/string.h>
28 #include <linux/sockios.h>
29 #include <linux/net.h>
31 #include <linux/inet.h>
32 #include <linux/netdevice.h>
33 #include <linux/if_arp.h>
34 #include <linux/skbuff.h>
36 #include <asm/uaccess.h>
37 #include <asm/system.h>
38 #include <linux/fcntl.h>
40 #include <linux/interrupt.h>
41 #include <linux/init.h>
43 ax25_dev *ax25_dev_list;
45 ax25_dev *ax25_dev_ax25dev(struct net_device *dev)
49 for (ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next)
50 if (ax25_dev->dev == dev)
56 ax25_dev *ax25_addr_ax25dev(ax25_address *addr)
60 for (ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next)
61 if (ax25cmp(addr, (ax25_address *)ax25_dev->dev->dev_addr) == 0)
68 * This is called when an interface is brought up. These are
69 * reasonable defaults.
71 void ax25_dev_device_up(struct net_device *dev)
76 if ((ax25_dev = kmalloc(sizeof(*ax25_dev), GFP_ATOMIC)) == NULL) {
77 printk(KERN_ERR "AX.25: ax25_dev_device_up - out of memory\n");
81 ax25_unregister_sysctl();
83 memset(ax25_dev, 0x00, sizeof(*ax25_dev));
86 ax25_dev->forward = NULL;
88 ax25_dev->values[AX25_VALUES_IPDEFMODE] = AX25_DEF_IPDEFMODE;
89 ax25_dev->values[AX25_VALUES_AXDEFMODE] = AX25_DEF_AXDEFMODE;
90 ax25_dev->values[AX25_VALUES_BACKOFF] = AX25_DEF_BACKOFF;
91 ax25_dev->values[AX25_VALUES_CONMODE] = AX25_DEF_CONMODE;
92 ax25_dev->values[AX25_VALUES_WINDOW] = AX25_DEF_WINDOW;
93 ax25_dev->values[AX25_VALUES_EWINDOW] = AX25_DEF_EWINDOW;
94 ax25_dev->values[AX25_VALUES_T1] = AX25_DEF_T1;
95 ax25_dev->values[AX25_VALUES_T2] = AX25_DEF_T2;
96 ax25_dev->values[AX25_VALUES_T3] = AX25_DEF_T3;
97 ax25_dev->values[AX25_VALUES_IDLE] = AX25_DEF_IDLE;
98 ax25_dev->values[AX25_VALUES_N2] = AX25_DEF_N2;
99 ax25_dev->values[AX25_VALUES_PACLEN] = AX25_DEF_PACLEN;
100 ax25_dev->values[AX25_VALUES_PROTOCOL] = AX25_DEF_PROTOCOL;
101 ax25_dev->values[AX25_VALUES_DS_TIMEOUT]= AX25_DEF_DS_TIMEOUT;
103 save_flags(flags); cli();
104 ax25_dev->next = ax25_dev_list;
105 ax25_dev_list = ax25_dev;
106 restore_flags(flags);
108 ax25_register_sysctl();
111 void ax25_dev_device_down(struct net_device *dev)
113 ax25_dev *s, *ax25_dev;
116 if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL)
119 ax25_unregister_sysctl();
121 save_flags(flags); cli();
123 #ifdef CONFIG_AX25_DAMA_SLAVE
124 ax25_ds_del_timer(ax25_dev);
128 * Remove any packet forwarding that points to this device.
130 for (s = ax25_dev_list; s != NULL; s = s->next)
131 if (s->forward == dev)
134 if ((s = ax25_dev_list) == ax25_dev) {
135 ax25_dev_list = s->next;
136 restore_flags(flags);
138 ax25_register_sysctl();
142 while (s != NULL && s->next != NULL) {
143 if (s->next == ax25_dev) {
144 s->next = ax25_dev->next;
145 restore_flags(flags);
147 ax25_register_sysctl();
154 restore_flags(flags);
155 ax25_register_sysctl();
158 int ax25_fwd_ioctl(unsigned int cmd, struct ax25_fwd_struct *fwd)
160 ax25_dev *ax25_dev, *fwd_dev;
162 if ((ax25_dev = ax25_addr_ax25dev(&fwd->port_from)) == NULL)
167 if ((fwd_dev = ax25_addr_ax25dev(&fwd->port_to)) == NULL)
169 if (ax25_dev->forward != NULL)
171 ax25_dev->forward = fwd_dev->dev;
175 if (ax25_dev->forward == NULL)
177 ax25_dev->forward = NULL;
187 struct net_device *ax25_fwd_dev(struct net_device *dev)
191 if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL)
194 if (ax25_dev->forward == NULL)
197 return ax25_dev->forward;
201 * Free all memory associated with device structures.
203 void __exit ax25_dev_free(void)
205 ax25_dev *s, *ax25_dev = ax25_dev_list;
207 while (ax25_dev != NULL) {
209 ax25_dev = ax25_dev->next;