Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * cycx_x25.c Cyclom 2X WAN Link Driver. X.25 module. | |
3 | * | |
4 | * Author: Arnaldo Carvalho de Melo <acme@conectiva.com.br> | |
5 | * | |
6 | * Copyright: (c) 1998-2003 Arnaldo Carvalho de Melo | |
7 | * | |
8 | * Based on sdla_x25.c by Gene Kozin <genek@compuserve.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | * ============================================================================ | |
15 | * 2001/01/12 acme use dev_kfree_skb_irq on interrupt context | |
16 | * 2000/04/02 acme dprintk, cycx_debug | |
17 | * fixed the bug introduced in get_dev_by_lcn and | |
18 | * get_dev_by_dte_addr by the anonymous hacker | |
19 | * that converted this driver to softnet | |
20 | * 2000/01/08 acme cleanup | |
21 | * 1999/10/27 acme use ARPHRD_HWX25 so that the X.25 stack know | |
22 | * that we have a X.25 stack implemented in | |
23 | * firmware onboard | |
24 | * 1999/10/18 acme support for X.25 sockets in if_send, | |
25 | * beware: socket(AF_X25...) IS WORK IN PROGRESS, | |
26 | * TCP/IP over X.25 via wanrouter not affected, | |
27 | * working. | |
28 | * 1999/10/09 acme chan_disc renamed to chan_disconnect, | |
29 | * began adding support for X.25 sockets: | |
30 | * conf->protocol in new_if | |
31 | * 1999/10/05 acme fixed return E... to return -E... | |
32 | * 1999/08/10 acme serialized access to the card thru a spinlock | |
33 | * in x25_exec | |
34 | * 1999/08/09 acme removed per channel spinlocks | |
35 | * removed references to enable_tx_int | |
36 | * 1999/05/28 acme fixed nibble_to_byte, ackvc now properly treated | |
37 | * if_send simplified | |
38 | * 1999/05/25 acme fixed t1, t2, t21 & t23 configuration | |
39 | * use spinlocks instead of cli/sti in some points | |
40 | * 1999/05/24 acme finished the x25_get_stat function | |
41 | * 1999/05/23 acme dev->type = ARPHRD_X25 (tcpdump only works, | |
42 | * AFAIT, with ARPHRD_ETHER). This seems to be | |
43 | * needed to use socket(AF_X25)... | |
44 | * Now the config file must specify a peer media | |
45 | * address for svc channels over a crossover cable. | |
46 | * Removed hold_timeout from x25_channel_t, | |
47 | * not used. | |
48 | * A little enhancement in the DEBUG processing | |
49 | * 1999/05/22 acme go to DISCONNECTED in disconnect_confirm_intr, | |
50 | * instead of chan_disc. | |
51 | * 1999/05/16 marcelo fixed timer initialization in SVCs | |
52 | * 1999/01/05 acme x25_configure now get (most of) all | |
53 | * parameters... | |
54 | * 1999/01/05 acme pktlen now (correctly) uses log2 (value | |
55 | * configured) | |
56 | * 1999/01/03 acme judicious use of data types (u8, u16, u32, etc) | |
57 | * 1999/01/03 acme cyx_isr: reset dpmbase to acknowledge | |
58 | * indication (interrupt from cyclom 2x) | |
59 | * 1999/01/02 acme cyx_isr: first hackings... | |
60 | * 1999/01/0203 acme when initializing an array don't give less | |
61 | * elements than declared... | |
62 | * example: char send_cmd[6] = "?\xFF\x10"; | |
63 | * you'll gonna lose a couple hours, 'cause your | |
64 | * brain won't admit that there's an error in the | |
65 | * above declaration... the side effect is that | |
66 | * memset is put into the unresolved symbols | |
67 | * instead of using the inline memset functions... | |
68 | * 1999/01/02 acme began chan_connect, chan_send, x25_send | |
69 | * 1998/12/31 acme x25_configure | |
70 | * this code can be compiled as non module | |
71 | * 1998/12/27 acme code cleanup | |
72 | * IPX code wiped out! let's decrease code | |
73 | * complexity for now, remember: I'm learning! :) | |
74 | * bps_to_speed_code OK | |
75 | * 1998/12/26 acme Minimal debug code cleanup | |
76 | * 1998/08/08 acme Initial version. | |
77 | */ | |
78 | ||
79 | #define CYCLOMX_X25_DEBUG 1 | |
80 | ||
8e18d1f9 | 81 | #include <linux/ctype.h> /* isdigit() */ |
1da177e4 LT |
82 | #include <linux/errno.h> /* return codes */ |
83 | #include <linux/if_arp.h> /* ARPHRD_HWX25 */ | |
84 | #include <linux/kernel.h> /* printk(), and other useful stuff */ | |
85 | #include <linux/module.h> | |
86 | #include <linux/string.h> /* inline memset(), etc. */ | |
87 | #include <linux/slab.h> /* kmalloc(), kfree() */ | |
88 | #include <linux/stddef.h> /* offsetof(), etc. */ | |
89 | #include <linux/wanrouter.h> /* WAN router definitions */ | |
90 | ||
91 | #include <asm/byteorder.h> /* htons(), etc. */ | |
92 | ||
93 | #include <linux/cyclomx.h> /* Cyclom 2X common user API definitions */ | |
94 | #include <linux/cycx_x25.h> /* X.25 firmware API definitions */ | |
95 | ||
96 | #include <net/x25device.h> | |
97 | ||
98 | /* Defines & Macros */ | |
99 | #define CYCX_X25_MAX_CMD_RETRY 5 | |
100 | #define CYCX_X25_CHAN_MTU 2048 /* unfragmented logical channel MTU */ | |
101 | ||
102 | /* Data Structures */ | |
103 | /* This is an extension of the 'struct net_device' we create for each network | |
104 | interface to keep the rest of X.25 channel-specific data. */ | |
105 | struct cycx_x25_channel { | |
106 | /* This member must be first. */ | |
107 | struct net_device *slave; /* WAN slave */ | |
108 | ||
109 | char name[WAN_IFNAME_SZ+1]; /* interface name, ASCIIZ */ | |
110 | char addr[WAN_ADDRESS_SZ+1]; /* media address, ASCIIZ */ | |
111 | char *local_addr; /* local media address, ASCIIZ - | |
112 | svc thru crossover cable */ | |
113 | s16 lcn; /* logical channel number/conn.req.key*/ | |
114 | u8 link; | |
115 | struct timer_list timer; /* timer used for svc channel disc. */ | |
116 | u16 protocol; /* ethertype, 0 - multiplexed */ | |
117 | u8 svc; /* 0 - permanent, 1 - switched */ | |
118 | u8 state; /* channel state */ | |
119 | u8 drop_sequence; /* mark sequence for dropping */ | |
120 | u32 idle_tmout; /* sec, before disconnecting */ | |
121 | struct sk_buff *rx_skb; /* receive socket buffer */ | |
122 | struct cycx_device *card; /* -> owner */ | |
123 | struct net_device_stats ifstats;/* interface statistics */ | |
124 | }; | |
125 | ||
126 | /* Function Prototypes */ | |
127 | /* WAN link driver entry points. These are called by the WAN router module. */ | |
128 | static int cycx_wan_update(struct wan_device *wandev), | |
129 | cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev, | |
130 | wanif_conf_t *conf), | |
131 | cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev); | |
132 | ||
133 | /* Network device interface */ | |
3b04ddde SH |
134 | static int cycx_netdevice_init(struct net_device *dev); |
135 | static int cycx_netdevice_open(struct net_device *dev); | |
136 | static int cycx_netdevice_stop(struct net_device *dev); | |
137 | static int cycx_netdevice_hard_header(struct sk_buff *skb, | |
138 | struct net_device *dev, u16 type, | |
139 | const void *daddr, const void *saddr, | |
140 | unsigned len); | |
141 | static int cycx_netdevice_rebuild_header(struct sk_buff *skb); | |
142 | static int cycx_netdevice_hard_start_xmit(struct sk_buff *skb, | |
1da177e4 LT |
143 | struct net_device *dev); |
144 | ||
145 | static struct net_device_stats * | |
146 | cycx_netdevice_get_stats(struct net_device *dev); | |
147 | ||
148 | /* Interrupt handlers */ | |
149 | static void cycx_x25_irq_handler(struct cycx_device *card), | |
150 | cycx_x25_irq_tx(struct cycx_device *card, struct cycx_x25_cmd *cmd), | |
151 | cycx_x25_irq_rx(struct cycx_device *card, struct cycx_x25_cmd *cmd), | |
152 | cycx_x25_irq_log(struct cycx_device *card, | |
153 | struct cycx_x25_cmd *cmd), | |
154 | cycx_x25_irq_stat(struct cycx_device *card, | |
155 | struct cycx_x25_cmd *cmd), | |
156 | cycx_x25_irq_connect_confirm(struct cycx_device *card, | |
157 | struct cycx_x25_cmd *cmd), | |
158 | cycx_x25_irq_disconnect_confirm(struct cycx_device *card, | |
159 | struct cycx_x25_cmd *cmd), | |
160 | cycx_x25_irq_connect(struct cycx_device *card, | |
161 | struct cycx_x25_cmd *cmd), | |
162 | cycx_x25_irq_disconnect(struct cycx_device *card, | |
163 | struct cycx_x25_cmd *cmd), | |
164 | cycx_x25_irq_spurious(struct cycx_device *card, | |
165 | struct cycx_x25_cmd *cmd); | |
166 | ||
167 | /* X.25 firmware interface functions */ | |
168 | static int cycx_x25_configure(struct cycx_device *card, | |
169 | struct cycx_x25_config *conf), | |
170 | cycx_x25_get_stats(struct cycx_device *card), | |
171 | cycx_x25_send(struct cycx_device *card, u8 link, u8 lcn, u8 bitm, | |
172 | int len, void *buf), | |
173 | cycx_x25_connect_response(struct cycx_device *card, | |
174 | struct cycx_x25_channel *chan), | |
175 | cycx_x25_disconnect_response(struct cycx_device *card, u8 link, | |
176 | u8 lcn); | |
177 | ||
178 | /* channel functions */ | |
179 | static int cycx_x25_chan_connect(struct net_device *dev), | |
180 | cycx_x25_chan_send(struct net_device *dev, struct sk_buff *skb); | |
181 | ||
182 | static void cycx_x25_chan_disconnect(struct net_device *dev), | |
183 | cycx_x25_chan_send_event(struct net_device *dev, u8 event); | |
184 | ||
185 | /* Miscellaneous functions */ | |
186 | static void cycx_x25_set_chan_state(struct net_device *dev, u8 state), | |
187 | cycx_x25_chan_timer(unsigned long d); | |
188 | ||
189 | static void nibble_to_byte(u8 *s, u8 *d, u8 len, u8 nibble), | |
190 | reset_timer(struct net_device *dev); | |
191 | ||
192 | static u8 bps_to_speed_code(u32 bps); | |
193 | static u8 cycx_log2(u32 n); | |
194 | ||
195 | static unsigned dec_to_uint(u8 *str, int len); | |
196 | ||
197 | static struct net_device *cycx_x25_get_dev_by_lcn(struct wan_device *wandev, | |
198 | s16 lcn); | |
199 | static struct net_device * | |
200 | cycx_x25_get_dev_by_dte_addr(struct wan_device *wandev, char *dte); | |
201 | ||
7be6065b WC |
202 | static void cycx_x25_chan_setup(struct net_device *dev); |
203 | ||
1da177e4 LT |
204 | #ifdef CYCLOMX_X25_DEBUG |
205 | static void hex_dump(char *msg, unsigned char *p, int len); | |
206 | static void cycx_x25_dump_config(struct cycx_x25_config *conf); | |
207 | static void cycx_x25_dump_stats(struct cycx_x25_stats *stats); | |
208 | static void cycx_x25_dump_devs(struct wan_device *wandev); | |
209 | #else | |
210 | #define hex_dump(msg, p, len) | |
211 | #define cycx_x25_dump_config(conf) | |
212 | #define cycx_x25_dump_stats(stats) | |
213 | #define cycx_x25_dump_devs(wandev) | |
214 | #endif | |
215 | /* Public Functions */ | |
216 | ||
217 | /* X.25 Protocol Initialization routine. | |
218 | * | |
219 | * This routine is called by the main Cyclom 2X module during setup. At this | |
220 | * point adapter is completely initialized and X.25 firmware is running. | |
221 | * o configure adapter | |
222 | * o initialize protocol-specific fields of the adapter data space. | |
223 | * | |
224 | * Return: 0 o.k. | |
225 | * < 0 failure. */ | |
226 | int cycx_x25_wan_init(struct cycx_device *card, wandev_conf_t *conf) | |
227 | { | |
228 | struct cycx_x25_config cfg; | |
229 | ||
230 | /* Verify configuration ID */ | |
231 | if (conf->config_id != WANCONFIG_X25) { | |
232 | printk(KERN_INFO "%s: invalid configuration ID %u!\n", | |
233 | card->devname, conf->config_id); | |
234 | return -EINVAL; | |
235 | } | |
236 | ||
237 | /* Initialize protocol-specific fields */ | |
238 | card->mbox = card->hw.dpmbase + X25_MBOX_OFFS; | |
239 | card->u.x.connection_keys = 0; | |
240 | spin_lock_init(&card->u.x.lock); | |
241 | ||
242 | /* Configure adapter. Here we set reasonable defaults, then parse | |
243 | * device configuration structure and set configuration options. | |
244 | * Most configuration options are verified and corrected (if | |
245 | * necessary) since we can't rely on the adapter to do so and don't | |
246 | * want it to fail either. */ | |
247 | memset(&cfg, 0, sizeof(cfg)); | |
248 | cfg.link = 0; | |
249 | cfg.clock = conf->clocking == WANOPT_EXTERNAL ? 8 : 55; | |
250 | cfg.speed = bps_to_speed_code(conf->bps); | |
251 | cfg.n3win = 7; | |
252 | cfg.n2win = 2; | |
253 | cfg.n2 = 5; | |
254 | cfg.nvc = 1; | |
255 | cfg.npvc = 1; | |
256 | cfg.flags = 0x02; /* default = V35 */ | |
257 | cfg.t1 = 10; /* line carrier timeout */ | |
258 | cfg.t2 = 29; /* tx timeout */ | |
259 | cfg.t21 = 180; /* CALL timeout */ | |
260 | cfg.t23 = 180; /* CLEAR timeout */ | |
261 | ||
262 | /* adjust MTU */ | |
263 | if (!conf->mtu || conf->mtu >= 512) | |
264 | card->wandev.mtu = 512; | |
265 | else if (conf->mtu >= 256) | |
266 | card->wandev.mtu = 256; | |
267 | else if (conf->mtu >= 128) | |
268 | card->wandev.mtu = 128; | |
269 | else | |
270 | card->wandev.mtu = 64; | |
271 | ||
272 | cfg.pktlen = cycx_log2(card->wandev.mtu); | |
273 | ||
274 | if (conf->station == WANOPT_DTE) { | |
275 | cfg.locaddr = 3; /* DTE */ | |
276 | cfg.remaddr = 1; /* DCE */ | |
277 | } else { | |
278 | cfg.locaddr = 1; /* DCE */ | |
279 | cfg.remaddr = 3; /* DTE */ | |
280 | } | |
281 | ||
282 | if (conf->interface == WANOPT_RS232) | |
283 | cfg.flags = 0; /* FIXME just reset the 2nd bit */ | |
284 | ||
285 | if (conf->u.x25.hi_pvc) { | |
286 | card->u.x.hi_pvc = min_t(unsigned int, conf->u.x25.hi_pvc, 4095); | |
287 | card->u.x.lo_pvc = min_t(unsigned int, conf->u.x25.lo_pvc, card->u.x.hi_pvc); | |
288 | } | |
289 | ||
290 | if (conf->u.x25.hi_svc) { | |
291 | card->u.x.hi_svc = min_t(unsigned int, conf->u.x25.hi_svc, 4095); | |
292 | card->u.x.lo_svc = min_t(unsigned int, conf->u.x25.lo_svc, card->u.x.hi_svc); | |
293 | } | |
294 | ||
295 | if (card->u.x.lo_pvc == 255) | |
296 | cfg.npvc = 0; | |
297 | else | |
298 | cfg.npvc = card->u.x.hi_pvc - card->u.x.lo_pvc + 1; | |
299 | ||
300 | cfg.nvc = card->u.x.hi_svc - card->u.x.lo_svc + 1 + cfg.npvc; | |
301 | ||
302 | if (conf->u.x25.hdlc_window) | |
303 | cfg.n2win = min_t(unsigned int, conf->u.x25.hdlc_window, 7); | |
304 | ||
305 | if (conf->u.x25.pkt_window) | |
306 | cfg.n3win = min_t(unsigned int, conf->u.x25.pkt_window, 7); | |
307 | ||
308 | if (conf->u.x25.t1) | |
309 | cfg.t1 = min_t(unsigned int, conf->u.x25.t1, 30); | |
310 | ||
311 | if (conf->u.x25.t2) | |
312 | cfg.t2 = min_t(unsigned int, conf->u.x25.t2, 30); | |
313 | ||
314 | if (conf->u.x25.t11_t21) | |
315 | cfg.t21 = min_t(unsigned int, conf->u.x25.t11_t21, 30); | |
316 | ||
317 | if (conf->u.x25.t13_t23) | |
318 | cfg.t23 = min_t(unsigned int, conf->u.x25.t13_t23, 30); | |
319 | ||
320 | if (conf->u.x25.n2) | |
321 | cfg.n2 = min_t(unsigned int, conf->u.x25.n2, 30); | |
322 | ||
323 | /* initialize adapter */ | |
324 | if (cycx_x25_configure(card, &cfg)) | |
325 | return -EIO; | |
326 | ||
327 | /* Initialize protocol-specific fields of adapter data space */ | |
328 | card->wandev.bps = conf->bps; | |
329 | card->wandev.interface = conf->interface; | |
330 | card->wandev.clocking = conf->clocking; | |
331 | card->wandev.station = conf->station; | |
332 | card->isr = cycx_x25_irq_handler; | |
333 | card->exec = NULL; | |
334 | card->wandev.update = cycx_wan_update; | |
335 | card->wandev.new_if = cycx_wan_new_if; | |
336 | card->wandev.del_if = cycx_wan_del_if; | |
337 | card->wandev.state = WAN_DISCONNECTED; | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | /* WAN Device Driver Entry Points */ | |
343 | /* Update device status & statistics. */ | |
344 | static int cycx_wan_update(struct wan_device *wandev) | |
345 | { | |
346 | /* sanity checks */ | |
347 | if (!wandev || !wandev->private) | |
348 | return -EFAULT; | |
349 | ||
350 | if (wandev->state == WAN_UNCONFIGURED) | |
351 | return -ENODEV; | |
352 | ||
353 | cycx_x25_get_stats(wandev->private); | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
7be6065b WC |
358 | /* callback to initialize device */ |
359 | static void cycx_x25_chan_setup(struct net_device *dev) | |
360 | { | |
361 | dev->init = cycx_netdevice_init; | |
362 | } | |
363 | ||
1da177e4 LT |
364 | /* Create new logical channel. |
365 | * This routine is called by the router when ROUTER_IFNEW IOCTL is being | |
366 | * handled. | |
367 | * o parse media- and hardware-specific configuration | |
368 | * o make sure that a new channel can be created | |
369 | * o allocate resources, if necessary | |
370 | * o prepare network device structure for registration. | |
371 | * | |
372 | * Return: 0 o.k. | |
373 | * < 0 failure (channel will not be created) */ | |
374 | static int cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev, | |
375 | wanif_conf_t *conf) | |
376 | { | |
377 | struct cycx_device *card = wandev->private; | |
378 | struct cycx_x25_channel *chan; | |
379 | int err = 0; | |
380 | ||
381 | if (!conf->name[0] || strlen(conf->name) > WAN_IFNAME_SZ) { | |
382 | printk(KERN_INFO "%s: invalid interface name!\n", | |
383 | card->devname); | |
384 | return -EINVAL; | |
385 | } | |
386 | ||
7be6065b WC |
387 | dev = alloc_netdev(sizeof(struct cycx_x25_channel), conf->name, |
388 | cycx_x25_chan_setup); | |
389 | if (!dev) | |
1da177e4 LT |
390 | return -ENOMEM; |
391 | ||
7be6065b | 392 | chan = netdev_priv(dev); |
1da177e4 LT |
393 | strcpy(chan->name, conf->name); |
394 | chan->card = card; | |
395 | chan->link = conf->port; | |
396 | chan->protocol = conf->protocol ? ETH_P_X25 : ETH_P_IP; | |
397 | chan->rx_skb = NULL; | |
398 | /* only used in svc connected thru crossover cable */ | |
399 | chan->local_addr = NULL; | |
400 | ||
401 | if (conf->addr[0] == '@') { /* SVC */ | |
402 | int len = strlen(conf->local_addr); | |
403 | ||
404 | if (len) { | |
405 | if (len > WAN_ADDRESS_SZ) { | |
406 | printk(KERN_ERR "%s: %s local addr too long!\n", | |
407 | wandev->name, chan->name); | |
7be6065b WC |
408 | err = -EINVAL; |
409 | goto error; | |
1da177e4 LT |
410 | } else { |
411 | chan->local_addr = kmalloc(len + 1, GFP_KERNEL); | |
412 | ||
413 | if (!chan->local_addr) { | |
7be6065b WC |
414 | err = -ENOMEM; |
415 | goto error; | |
1da177e4 LT |
416 | } |
417 | } | |
418 | ||
419 | strncpy(chan->local_addr, conf->local_addr, | |
420 | WAN_ADDRESS_SZ); | |
421 | } | |
422 | ||
423 | chan->svc = 1; | |
424 | strncpy(chan->addr, &conf->addr[1], WAN_ADDRESS_SZ); | |
425 | init_timer(&chan->timer); | |
426 | chan->timer.function = cycx_x25_chan_timer; | |
427 | chan->timer.data = (unsigned long)dev; | |
428 | ||
429 | /* Set channel timeouts (default if not specified) */ | |
430 | chan->idle_tmout = conf->idle_timeout ? conf->idle_timeout : 90; | |
8e18d1f9 | 431 | } else if (isdigit(conf->addr[0])) { /* PVC */ |
1da177e4 LT |
432 | s16 lcn = dec_to_uint(conf->addr, 0); |
433 | ||
434 | if (lcn >= card->u.x.lo_pvc && lcn <= card->u.x.hi_pvc) | |
435 | chan->lcn = lcn; | |
436 | else { | |
437 | printk(KERN_ERR | |
438 | "%s: PVC %u is out of range on interface %s!\n", | |
439 | wandev->name, lcn, chan->name); | |
440 | err = -EINVAL; | |
7be6065b | 441 | goto error; |
1da177e4 LT |
442 | } |
443 | } else { | |
444 | printk(KERN_ERR "%s: invalid media address on interface %s!\n", | |
445 | wandev->name, chan->name); | |
446 | err = -EINVAL; | |
7be6065b | 447 | goto error; |
1da177e4 LT |
448 | } |
449 | ||
1da177e4 | 450 | return 0; |
7be6065b WC |
451 | |
452 | error: | |
453 | free_netdev(dev); | |
454 | return err; | |
1da177e4 LT |
455 | } |
456 | ||
457 | /* Delete logical channel. */ | |
458 | static int cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev) | |
459 | { | |
7be6065b | 460 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 | 461 | |
7be6065b WC |
462 | if (chan->svc) { |
463 | kfree(chan->local_addr); | |
464 | if (chan->state == WAN_CONNECTED) | |
465 | del_timer(&chan->timer); | |
1da177e4 LT |
466 | } |
467 | ||
468 | return 0; | |
469 | } | |
470 | ||
3b04ddde | 471 | |
1da177e4 | 472 | /* Network Device Interface */ |
3b04ddde SH |
473 | |
474 | static const struct header_ops cycx_header_ops = { | |
475 | .create = cycx_netdevice_hard_header, | |
476 | .rebuild = cycx_netdevice_rebuild_header, | |
477 | }; | |
478 | ||
1da177e4 LT |
479 | /* Initialize Linux network interface. |
480 | * | |
481 | * This routine is called only once for each interface, during Linux network | |
482 | * interface registration. Returning anything but zero will fail interface | |
483 | * registration. */ | |
484 | static int cycx_netdevice_init(struct net_device *dev) | |
485 | { | |
7be6065b | 486 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
487 | struct cycx_device *card = chan->card; |
488 | struct wan_device *wandev = &card->wandev; | |
489 | ||
490 | /* Initialize device driver entry points */ | |
491 | dev->open = cycx_netdevice_open; | |
492 | dev->stop = cycx_netdevice_stop; | |
3b04ddde SH |
493 | dev->header_ops = &cycx_header_ops; |
494 | ||
1da177e4 LT |
495 | dev->hard_start_xmit = cycx_netdevice_hard_start_xmit; |
496 | dev->get_stats = cycx_netdevice_get_stats; | |
497 | ||
498 | /* Initialize media-specific parameters */ | |
499 | dev->mtu = CYCX_X25_CHAN_MTU; | |
500 | dev->type = ARPHRD_HWX25; /* ARP h/w type */ | |
501 | dev->hard_header_len = 0; /* media header length */ | |
502 | dev->addr_len = 0; /* hardware address length */ | |
503 | ||
504 | if (!chan->svc) | |
7fd71e58 | 505 | *(__be16*)dev->dev_addr = htons(chan->lcn); |
1da177e4 LT |
506 | |
507 | /* Initialize hardware parameters (just for reference) */ | |
508 | dev->irq = wandev->irq; | |
509 | dev->dma = wandev->dma; | |
510 | dev->base_addr = wandev->ioport; | |
511 | dev->mem_start = (unsigned long)wandev->maddr; | |
512 | dev->mem_end = (unsigned long)(wandev->maddr + | |
513 | wandev->msize - 1); | |
514 | dev->flags |= IFF_NOARP; | |
515 | ||
516 | /* Set transmit buffer queue length */ | |
517 | dev->tx_queue_len = 10; | |
1da177e4 LT |
518 | |
519 | /* Initialize socket buffers */ | |
520 | cycx_x25_set_chan_state(dev, WAN_DISCONNECTED); | |
521 | ||
522 | return 0; | |
523 | } | |
524 | ||
525 | /* Open network interface. | |
526 | * o prevent module from unloading by incrementing use count | |
527 | * o if link is disconnected then initiate connection | |
528 | * | |
529 | * Return 0 if O.k. or errno. */ | |
530 | static int cycx_netdevice_open(struct net_device *dev) | |
531 | { | |
532 | if (netif_running(dev)) | |
533 | return -EBUSY; /* only one open is allowed */ | |
534 | ||
535 | netif_start_queue(dev); | |
536 | return 0; | |
537 | } | |
538 | ||
539 | /* Close network interface. | |
540 | * o reset flags. | |
541 | * o if there's no more open channels then disconnect physical link. */ | |
542 | static int cycx_netdevice_stop(struct net_device *dev) | |
543 | { | |
7be6065b | 544 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
545 | |
546 | netif_stop_queue(dev); | |
547 | ||
548 | if (chan->state == WAN_CONNECTED || chan->state == WAN_CONNECTING) | |
549 | cycx_x25_chan_disconnect(dev); | |
550 | ||
551 | return 0; | |
552 | } | |
553 | ||
554 | /* Build media header. | |
555 | * o encapsulate packet according to encapsulation type. | |
556 | * | |
557 | * The trick here is to put packet type (Ethertype) into 'protocol' field of | |
558 | * the socket buffer, so that we don't forget it. If encapsulation fails, | |
559 | * set skb->protocol to 0 and discard packet later. | |
560 | * | |
561 | * Return: media header length. */ | |
562 | static int cycx_netdevice_hard_header(struct sk_buff *skb, | |
563 | struct net_device *dev, u16 type, | |
3b04ddde SH |
564 | const void *daddr, const void *saddr, |
565 | unsigned len) | |
1da177e4 | 566 | { |
7fd71e58 | 567 | skb->protocol = htons(type); |
1da177e4 LT |
568 | |
569 | return dev->hard_header_len; | |
570 | } | |
571 | ||
572 | /* * Re-build media header. | |
573 | * Return: 1 physical address resolved. | |
574 | * 0 physical address not resolved */ | |
575 | static int cycx_netdevice_rebuild_header(struct sk_buff *skb) | |
576 | { | |
577 | return 1; | |
578 | } | |
579 | ||
580 | /* Send a packet on a network interface. | |
581 | * o set busy flag (marks start of the transmission). | |
582 | * o check link state. If link is not up, then drop the packet. | |
583 | * o check channel status. If it's down then initiate a call. | |
584 | * o pass a packet to corresponding WAN device. | |
585 | * o free socket buffer | |
586 | * | |
587 | * Return: 0 complete (socket buffer must be freed) | |
588 | * non-0 packet may be re-transmitted (tbusy must be set) | |
589 | * | |
590 | * Notes: | |
591 | * 1. This routine is called either by the protocol stack or by the "net | |
592 | * bottom half" (with interrupts enabled). | |
593 | * 2. Setting tbusy flag will inhibit further transmit requests from the | |
594 | * protocol stack and can be used for flow control with protocol layer. */ | |
595 | static int cycx_netdevice_hard_start_xmit(struct sk_buff *skb, | |
596 | struct net_device *dev) | |
597 | { | |
7be6065b | 598 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
599 | struct cycx_device *card = chan->card; |
600 | ||
601 | if (!chan->svc) | |
7fd71e58 | 602 | chan->protocol = ntohs(skb->protocol); |
1da177e4 LT |
603 | |
604 | if (card->wandev.state != WAN_CONNECTED) | |
605 | ++chan->ifstats.tx_dropped; | |
606 | else if (chan->svc && chan->protocol && | |
7fd71e58 | 607 | chan->protocol != ntohs(skb->protocol)) { |
1da177e4 LT |
608 | printk(KERN_INFO |
609 | "%s: unsupported Ethertype 0x%04X on interface %s!\n", | |
7fd71e58 | 610 | card->devname, ntohs(skb->protocol), dev->name); |
1da177e4 LT |
611 | ++chan->ifstats.tx_errors; |
612 | } else if (chan->protocol == ETH_P_IP) { | |
613 | switch (chan->state) { | |
614 | case WAN_DISCONNECTED: | |
615 | if (cycx_x25_chan_connect(dev)) { | |
616 | netif_stop_queue(dev); | |
617 | return -EBUSY; | |
618 | } | |
619 | /* fall thru */ | |
620 | case WAN_CONNECTED: | |
621 | reset_timer(dev); | |
622 | dev->trans_start = jiffies; | |
623 | netif_stop_queue(dev); | |
624 | ||
625 | if (cycx_x25_chan_send(dev, skb)) | |
626 | return -EBUSY; | |
627 | ||
628 | break; | |
629 | default: | |
630 | ++chan->ifstats.tx_dropped; | |
631 | ++card->wandev.stats.tx_dropped; | |
632 | } | |
633 | } else { /* chan->protocol == ETH_P_X25 */ | |
634 | switch (skb->data[0]) { | |
635 | case 0: break; | |
636 | case 1: /* Connect request */ | |
637 | cycx_x25_chan_connect(dev); | |
638 | goto free_packet; | |
639 | case 2: /* Disconnect request */ | |
640 | cycx_x25_chan_disconnect(dev); | |
641 | goto free_packet; | |
642 | default: | |
643 | printk(KERN_INFO | |
644 | "%s: unknown %d x25-iface request on %s!\n", | |
645 | card->devname, skb->data[0], dev->name); | |
646 | ++chan->ifstats.tx_errors; | |
647 | goto free_packet; | |
648 | } | |
649 | ||
650 | skb_pull(skb, 1); /* Remove control byte */ | |
651 | reset_timer(dev); | |
652 | dev->trans_start = jiffies; | |
653 | netif_stop_queue(dev); | |
654 | ||
655 | if (cycx_x25_chan_send(dev, skb)) { | |
656 | /* prepare for future retransmissions */ | |
657 | skb_push(skb, 1); | |
658 | return -EBUSY; | |
659 | } | |
660 | } | |
661 | ||
662 | free_packet: | |
663 | dev_kfree_skb(skb); | |
664 | ||
665 | return 0; | |
666 | } | |
667 | ||
668 | /* Get Ethernet-style interface statistics. | |
669 | * Return a pointer to struct net_device_stats */ | |
670 | static struct net_device_stats *cycx_netdevice_get_stats(struct net_device *dev) | |
671 | { | |
7be6065b | 672 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
673 | |
674 | return chan ? &chan->ifstats : NULL; | |
675 | } | |
676 | ||
677 | /* Interrupt Handlers */ | |
678 | /* X.25 Interrupt Service Routine. */ | |
679 | static void cycx_x25_irq_handler(struct cycx_device *card) | |
680 | { | |
681 | struct cycx_x25_cmd cmd; | |
682 | u16 z = 0; | |
683 | ||
684 | card->in_isr = 1; | |
685 | card->buff_int_mode_unbusy = 0; | |
686 | cycx_peek(&card->hw, X25_RXMBOX_OFFS, &cmd, sizeof(cmd)); | |
687 | ||
688 | switch (cmd.command) { | |
689 | case X25_DATA_INDICATION: | |
690 | cycx_x25_irq_rx(card, &cmd); | |
691 | break; | |
692 | case X25_ACK_FROM_VC: | |
693 | cycx_x25_irq_tx(card, &cmd); | |
694 | break; | |
695 | case X25_LOG: | |
696 | cycx_x25_irq_log(card, &cmd); | |
697 | break; | |
698 | case X25_STATISTIC: | |
699 | cycx_x25_irq_stat(card, &cmd); | |
700 | break; | |
701 | case X25_CONNECT_CONFIRM: | |
702 | cycx_x25_irq_connect_confirm(card, &cmd); | |
703 | break; | |
704 | case X25_CONNECT_INDICATION: | |
705 | cycx_x25_irq_connect(card, &cmd); | |
706 | break; | |
707 | case X25_DISCONNECT_INDICATION: | |
708 | cycx_x25_irq_disconnect(card, &cmd); | |
709 | break; | |
710 | case X25_DISCONNECT_CONFIRM: | |
711 | cycx_x25_irq_disconnect_confirm(card, &cmd); | |
712 | break; | |
713 | case X25_LINE_ON: | |
714 | cycx_set_state(card, WAN_CONNECTED); | |
715 | break; | |
716 | case X25_LINE_OFF: | |
717 | cycx_set_state(card, WAN_DISCONNECTED); | |
718 | break; | |
719 | default: | |
720 | cycx_x25_irq_spurious(card, &cmd); | |
721 | break; | |
722 | } | |
723 | ||
724 | cycx_poke(&card->hw, 0, &z, sizeof(z)); | |
725 | cycx_poke(&card->hw, X25_RXMBOX_OFFS, &z, sizeof(z)); | |
726 | card->in_isr = 0; | |
727 | } | |
728 | ||
729 | /* Transmit interrupt handler. | |
730 | * o Release socket buffer | |
731 | * o Clear 'tbusy' flag */ | |
732 | static void cycx_x25_irq_tx(struct cycx_device *card, struct cycx_x25_cmd *cmd) | |
733 | { | |
734 | struct net_device *dev; | |
735 | struct wan_device *wandev = &card->wandev; | |
736 | u8 lcn; | |
737 | ||
738 | cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn)); | |
739 | ||
740 | /* unbusy device and then dev_tint(); */ | |
741 | dev = cycx_x25_get_dev_by_lcn(wandev, lcn); | |
742 | if (dev) { | |
743 | card->buff_int_mode_unbusy = 1; | |
744 | netif_wake_queue(dev); | |
745 | } else | |
746 | printk(KERN_ERR "%s:ackvc for inexistent lcn %d\n", | |
747 | card->devname, lcn); | |
748 | } | |
749 | ||
750 | /* Receive interrupt handler. | |
751 | * This routine handles fragmented IP packets using M-bit according to the | |
752 | * RFC1356. | |
753 | * o map logical channel number to network interface. | |
754 | * o allocate socket buffer or append received packet to the existing one. | |
755 | * o if M-bit is reset (i.e. it's the last packet in a sequence) then | |
756 | * decapsulate packet and pass socket buffer to the protocol stack. | |
757 | * | |
758 | * Notes: | |
759 | * 1. When allocating a socket buffer, if M-bit is set then more data is | |
760 | * coming and we have to allocate buffer for the maximum IP packet size | |
761 | * expected on this channel. | |
762 | * 2. If something goes wrong and X.25 packet has to be dropped (e.g. no | |
763 | * socket buffers available) the whole packet sequence must be discarded. */ | |
764 | static void cycx_x25_irq_rx(struct cycx_device *card, struct cycx_x25_cmd *cmd) | |
765 | { | |
766 | struct wan_device *wandev = &card->wandev; | |
767 | struct net_device *dev; | |
768 | struct cycx_x25_channel *chan; | |
769 | struct sk_buff *skb; | |
770 | u8 bitm, lcn; | |
771 | int pktlen = cmd->len - 5; | |
772 | ||
773 | cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn)); | |
774 | cycx_peek(&card->hw, cmd->buf + 4, &bitm, sizeof(bitm)); | |
775 | bitm &= 0x10; | |
776 | ||
777 | dev = cycx_x25_get_dev_by_lcn(wandev, lcn); | |
778 | if (!dev) { | |
779 | /* Invalid channel, discard packet */ | |
780 | printk(KERN_INFO "%s: receiving on orphaned LCN %d!\n", | |
781 | card->devname, lcn); | |
782 | return; | |
783 | } | |
784 | ||
7be6065b | 785 | chan = netdev_priv(dev); |
1da177e4 LT |
786 | reset_timer(dev); |
787 | ||
788 | if (chan->drop_sequence) { | |
789 | if (!bitm) | |
790 | chan->drop_sequence = 0; | |
791 | else | |
792 | return; | |
793 | } | |
794 | ||
795 | if ((skb = chan->rx_skb) == NULL) { | |
796 | /* Allocate new socket buffer */ | |
797 | int bufsize = bitm ? dev->mtu : pktlen; | |
798 | ||
799 | if ((skb = dev_alloc_skb((chan->protocol == ETH_P_X25 ? 1 : 0) + | |
800 | bufsize + | |
801 | dev->hard_header_len)) == NULL) { | |
802 | printk(KERN_INFO "%s: no socket buffers available!\n", | |
803 | card->devname); | |
804 | chan->drop_sequence = 1; | |
805 | ++chan->ifstats.rx_dropped; | |
806 | return; | |
807 | } | |
808 | ||
809 | if (chan->protocol == ETH_P_X25) /* X.25 socket layer control */ | |
810 | /* 0 = data packet (dev_alloc_skb zeroed skb->data) */ | |
811 | skb_put(skb, 1); | |
812 | ||
813 | skb->dev = dev; | |
814 | skb->protocol = htons(chan->protocol); | |
815 | chan->rx_skb = skb; | |
816 | } | |
817 | ||
818 | if (skb_tailroom(skb) < pktlen) { | |
819 | /* No room for the packet. Call off the whole thing! */ | |
820 | dev_kfree_skb_irq(skb); | |
821 | chan->rx_skb = NULL; | |
822 | ||
823 | if (bitm) | |
824 | chan->drop_sequence = 1; | |
825 | ||
826 | printk(KERN_INFO "%s: unexpectedly long packet sequence " | |
827 | "on interface %s!\n", card->devname, dev->name); | |
828 | ++chan->ifstats.rx_length_errors; | |
829 | return; | |
830 | } | |
831 | ||
832 | /* Append packet to the socket buffer */ | |
833 | cycx_peek(&card->hw, cmd->buf + 5, skb_put(skb, pktlen), pktlen); | |
834 | ||
835 | if (bitm) | |
836 | return; /* more data is coming */ | |
837 | ||
838 | chan->rx_skb = NULL; /* dequeue packet */ | |
839 | ||
840 | ++chan->ifstats.rx_packets; | |
841 | chan->ifstats.rx_bytes += pktlen; | |
842 | ||
459a98ed | 843 | skb_reset_mac_header(skb); |
1da177e4 | 844 | netif_rx(skb); |
1da177e4 LT |
845 | } |
846 | ||
847 | /* Connect interrupt handler. */ | |
848 | static void cycx_x25_irq_connect(struct cycx_device *card, | |
849 | struct cycx_x25_cmd *cmd) | |
850 | { | |
851 | struct wan_device *wandev = &card->wandev; | |
852 | struct net_device *dev = NULL; | |
853 | struct cycx_x25_channel *chan; | |
854 | u8 d[32], | |
855 | loc[24], | |
856 | rem[24]; | |
857 | u8 lcn, sizeloc, sizerem; | |
858 | ||
859 | cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn)); | |
860 | cycx_peek(&card->hw, cmd->buf + 5, &sizeloc, sizeof(sizeloc)); | |
861 | cycx_peek(&card->hw, cmd->buf + 6, d, cmd->len - 6); | |
862 | ||
863 | sizerem = sizeloc >> 4; | |
864 | sizeloc &= 0x0F; | |
865 | ||
866 | loc[0] = rem[0] = '\0'; | |
867 | ||
868 | if (sizeloc) | |
869 | nibble_to_byte(d, loc, sizeloc, 0); | |
870 | ||
871 | if (sizerem) | |
872 | nibble_to_byte(d + (sizeloc >> 1), rem, sizerem, sizeloc & 1); | |
873 | ||
874 | dprintk(1, KERN_INFO "%s:lcn=%d, local=%s, remote=%s\n", | |
b39d66a8 | 875 | __func__, lcn, loc, rem); |
1da177e4 LT |
876 | |
877 | dev = cycx_x25_get_dev_by_dte_addr(wandev, rem); | |
878 | if (!dev) { | |
879 | /* Invalid channel, discard packet */ | |
880 | printk(KERN_INFO "%s: connect not expected: remote %s!\n", | |
881 | card->devname, rem); | |
882 | return; | |
883 | } | |
884 | ||
7be6065b | 885 | chan = netdev_priv(dev); |
1da177e4 LT |
886 | chan->lcn = lcn; |
887 | cycx_x25_connect_response(card, chan); | |
888 | cycx_x25_set_chan_state(dev, WAN_CONNECTED); | |
889 | } | |
890 | ||
891 | /* Connect confirm interrupt handler. */ | |
892 | static void cycx_x25_irq_connect_confirm(struct cycx_device *card, | |
893 | struct cycx_x25_cmd *cmd) | |
894 | { | |
895 | struct wan_device *wandev = &card->wandev; | |
896 | struct net_device *dev; | |
897 | struct cycx_x25_channel *chan; | |
898 | u8 lcn, key; | |
899 | ||
900 | cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn)); | |
901 | cycx_peek(&card->hw, cmd->buf + 1, &key, sizeof(key)); | |
902 | dprintk(1, KERN_INFO "%s: %s:lcn=%d, key=%d\n", | |
b39d66a8 | 903 | card->devname, __func__, lcn, key); |
1da177e4 LT |
904 | |
905 | dev = cycx_x25_get_dev_by_lcn(wandev, -key); | |
906 | if (!dev) { | |
907 | /* Invalid channel, discard packet */ | |
908 | clear_bit(--key, (void*)&card->u.x.connection_keys); | |
909 | printk(KERN_INFO "%s: connect confirm not expected: lcn %d, " | |
910 | "key=%d!\n", card->devname, lcn, key); | |
911 | return; | |
912 | } | |
913 | ||
914 | clear_bit(--key, (void*)&card->u.x.connection_keys); | |
7be6065b | 915 | chan = netdev_priv(dev); |
1da177e4 LT |
916 | chan->lcn = lcn; |
917 | cycx_x25_set_chan_state(dev, WAN_CONNECTED); | |
918 | } | |
919 | ||
920 | /* Disconnect confirm interrupt handler. */ | |
921 | static void cycx_x25_irq_disconnect_confirm(struct cycx_device *card, | |
922 | struct cycx_x25_cmd *cmd) | |
923 | { | |
924 | struct wan_device *wandev = &card->wandev; | |
925 | struct net_device *dev; | |
926 | u8 lcn; | |
927 | ||
928 | cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn)); | |
929 | dprintk(1, KERN_INFO "%s: %s:lcn=%d\n", | |
b39d66a8 | 930 | card->devname, __func__, lcn); |
1da177e4 LT |
931 | dev = cycx_x25_get_dev_by_lcn(wandev, lcn); |
932 | if (!dev) { | |
933 | /* Invalid channel, discard packet */ | |
934 | printk(KERN_INFO "%s:disconnect confirm not expected!:lcn %d\n", | |
935 | card->devname, lcn); | |
936 | return; | |
937 | } | |
938 | ||
939 | cycx_x25_set_chan_state(dev, WAN_DISCONNECTED); | |
940 | } | |
941 | ||
942 | /* disconnect interrupt handler. */ | |
943 | static void cycx_x25_irq_disconnect(struct cycx_device *card, | |
944 | struct cycx_x25_cmd *cmd) | |
945 | { | |
946 | struct wan_device *wandev = &card->wandev; | |
947 | struct net_device *dev; | |
948 | u8 lcn; | |
949 | ||
950 | cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn)); | |
b39d66a8 | 951 | dprintk(1, KERN_INFO "%s:lcn=%d\n", __func__, lcn); |
1da177e4 LT |
952 | |
953 | dev = cycx_x25_get_dev_by_lcn(wandev, lcn); | |
954 | if (dev) { | |
7be6065b | 955 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
956 | |
957 | cycx_x25_disconnect_response(card, chan->link, lcn); | |
958 | cycx_x25_set_chan_state(dev, WAN_DISCONNECTED); | |
959 | } else | |
960 | cycx_x25_disconnect_response(card, 0, lcn); | |
961 | } | |
962 | ||
963 | /* LOG interrupt handler. */ | |
964 | static void cycx_x25_irq_log(struct cycx_device *card, struct cycx_x25_cmd *cmd) | |
965 | { | |
966 | #if CYCLOMX_X25_DEBUG | |
967 | char bf[20]; | |
968 | u16 size, toread, link, msg_code; | |
969 | u8 code, routine; | |
970 | ||
971 | cycx_peek(&card->hw, cmd->buf, &msg_code, sizeof(msg_code)); | |
972 | cycx_peek(&card->hw, cmd->buf + 2, &link, sizeof(link)); | |
973 | cycx_peek(&card->hw, cmd->buf + 4, &size, sizeof(size)); | |
974 | /* at most 20 bytes are available... thanks to Daniela :) */ | |
975 | toread = size < 20 ? size : 20; | |
976 | cycx_peek(&card->hw, cmd->buf + 10, &bf, toread); | |
977 | cycx_peek(&card->hw, cmd->buf + 10 + toread, &code, 1); | |
978 | cycx_peek(&card->hw, cmd->buf + 10 + toread + 1, &routine, 1); | |
979 | ||
980 | printk(KERN_INFO "cycx_x25_irq_handler: X25_LOG (0x4500) indic.:\n"); | |
981 | printk(KERN_INFO "cmd->buf=0x%X\n", cmd->buf); | |
982 | printk(KERN_INFO "Log message code=0x%X\n", msg_code); | |
983 | printk(KERN_INFO "Link=%d\n", link); | |
984 | printk(KERN_INFO "log code=0x%X\n", code); | |
985 | printk(KERN_INFO "log routine=0x%X\n", routine); | |
986 | printk(KERN_INFO "Message size=%d\n", size); | |
987 | hex_dump("Message", bf, toread); | |
988 | #endif | |
989 | } | |
990 | ||
991 | /* STATISTIC interrupt handler. */ | |
992 | static void cycx_x25_irq_stat(struct cycx_device *card, | |
993 | struct cycx_x25_cmd *cmd) | |
994 | { | |
995 | cycx_peek(&card->hw, cmd->buf, &card->u.x.stats, | |
996 | sizeof(card->u.x.stats)); | |
997 | hex_dump("cycx_x25_irq_stat", (unsigned char*)&card->u.x.stats, | |
998 | sizeof(card->u.x.stats)); | |
999 | cycx_x25_dump_stats(&card->u.x.stats); | |
1000 | wake_up_interruptible(&card->wait_stats); | |
1001 | } | |
1002 | ||
1003 | /* Spurious interrupt handler. | |
1004 | * o print a warning | |
1005 | * If number of spurious interrupts exceeded some limit, then ??? */ | |
1006 | static void cycx_x25_irq_spurious(struct cycx_device *card, | |
1007 | struct cycx_x25_cmd *cmd) | |
1008 | { | |
1009 | printk(KERN_INFO "%s: spurious interrupt (0x%X)!\n", | |
1010 | card->devname, cmd->command); | |
1011 | } | |
1012 | #ifdef CYCLOMX_X25_DEBUG | |
1013 | static void hex_dump(char *msg, unsigned char *p, int len) | |
1014 | { | |
1015 | unsigned char hex[1024], | |
1016 | * phex = hex; | |
1017 | ||
1018 | if (len >= (sizeof(hex) / 2)) | |
1019 | len = (sizeof(hex) / 2) - 1; | |
1020 | ||
1021 | while (len--) { | |
1022 | sprintf(phex, "%02x", *p++); | |
1023 | phex += 2; | |
1024 | } | |
1025 | ||
1026 | printk(KERN_INFO "%s: %s\n", msg, hex); | |
1027 | } | |
1028 | #endif | |
1029 | ||
1030 | /* Cyclom 2X Firmware-Specific Functions */ | |
1031 | /* Exec X.25 command. */ | |
1032 | static int x25_exec(struct cycx_device *card, int command, int link, | |
1033 | void *d1, int len1, void *d2, int len2) | |
1034 | { | |
1035 | struct cycx_x25_cmd c; | |
1036 | unsigned long flags; | |
1037 | u32 addr = 0x1200 + 0x2E0 * link + 0x1E2; | |
1038 | u8 retry = CYCX_X25_MAX_CMD_RETRY; | |
1039 | int err = 0; | |
1040 | ||
1041 | c.command = command; | |
1042 | c.link = link; | |
1043 | c.len = len1 + len2; | |
1044 | ||
1045 | spin_lock_irqsave(&card->u.x.lock, flags); | |
1046 | ||
1047 | /* write command */ | |
1048 | cycx_poke(&card->hw, X25_MBOX_OFFS, &c, sizeof(c) - sizeof(c.buf)); | |
1049 | ||
1050 | /* write X.25 data */ | |
1051 | if (d1) { | |
1052 | cycx_poke(&card->hw, addr, d1, len1); | |
1053 | ||
1054 | if (d2) { | |
1055 | if (len2 > 254) { | |
1056 | u32 addr1 = 0xA00 + 0x400 * link; | |
1057 | ||
1058 | cycx_poke(&card->hw, addr + len1, d2, 249); | |
1059 | cycx_poke(&card->hw, addr1, ((u8*)d2) + 249, | |
1060 | len2 - 249); | |
1061 | } else | |
1062 | cycx_poke(&card->hw, addr + len1, d2, len2); | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | /* generate interruption, executing command */ | |
1067 | cycx_intr(&card->hw); | |
1068 | ||
1069 | /* wait till card->mbox == 0 */ | |
1070 | do { | |
1071 | err = cycx_exec(card->mbox); | |
1072 | } while (retry-- && err); | |
1073 | ||
1074 | spin_unlock_irqrestore(&card->u.x.lock, flags); | |
1075 | ||
1076 | return err; | |
1077 | } | |
1078 | ||
1079 | /* Configure adapter. */ | |
1080 | static int cycx_x25_configure(struct cycx_device *card, | |
1081 | struct cycx_x25_config *conf) | |
1082 | { | |
1083 | struct { | |
1084 | u16 nlinks; | |
1085 | struct cycx_x25_config conf[2]; | |
1086 | } x25_cmd_conf; | |
1087 | ||
1088 | memset(&x25_cmd_conf, 0, sizeof(x25_cmd_conf)); | |
1089 | x25_cmd_conf.nlinks = 2; | |
1090 | x25_cmd_conf.conf[0] = *conf; | |
1091 | /* FIXME: we need to find a way in the wanrouter framework | |
1092 | to configure the second link, for now lets use it | |
1093 | with the same config from the first link, fixing | |
1094 | the interface type to RS232, the speed in 38400 and | |
1095 | the clock to external */ | |
1096 | x25_cmd_conf.conf[1] = *conf; | |
1097 | x25_cmd_conf.conf[1].link = 1; | |
1098 | x25_cmd_conf.conf[1].speed = 5; /* 38400 */ | |
1099 | x25_cmd_conf.conf[1].clock = 8; | |
1100 | x25_cmd_conf.conf[1].flags = 0; /* default = RS232 */ | |
1101 | ||
1102 | cycx_x25_dump_config(&x25_cmd_conf.conf[0]); | |
1103 | cycx_x25_dump_config(&x25_cmd_conf.conf[1]); | |
1104 | ||
1105 | return x25_exec(card, X25_CONFIG, 0, | |
1106 | &x25_cmd_conf, sizeof(x25_cmd_conf), NULL, 0); | |
1107 | } | |
1108 | ||
1109 | /* Get protocol statistics. */ | |
1110 | static int cycx_x25_get_stats(struct cycx_device *card) | |
1111 | { | |
1112 | /* the firmware expects 20 in the size field!!! | |
1113 | thanks to Daniela */ | |
1114 | int err = x25_exec(card, X25_STATISTIC, 0, NULL, 20, NULL, 0); | |
1115 | ||
1116 | if (err) | |
1117 | return err; | |
1118 | ||
1119 | interruptible_sleep_on(&card->wait_stats); | |
1120 | ||
1121 | if (signal_pending(current)) | |
1122 | return -EINTR; | |
1123 | ||
1124 | card->wandev.stats.rx_packets = card->u.x.stats.n2_rx_frames; | |
1125 | card->wandev.stats.rx_over_errors = card->u.x.stats.rx_over_errors; | |
1126 | card->wandev.stats.rx_crc_errors = card->u.x.stats.rx_crc_errors; | |
1127 | card->wandev.stats.rx_length_errors = 0; /* not available from fw */ | |
1128 | card->wandev.stats.rx_frame_errors = 0; /* not available from fw */ | |
1129 | card->wandev.stats.rx_missed_errors = card->u.x.stats.rx_aborts; | |
1130 | card->wandev.stats.rx_dropped = 0; /* not available from fw */ | |
1131 | card->wandev.stats.rx_errors = 0; /* not available from fw */ | |
1132 | card->wandev.stats.tx_packets = card->u.x.stats.n2_tx_frames; | |
1133 | card->wandev.stats.tx_aborted_errors = card->u.x.stats.tx_aborts; | |
1134 | card->wandev.stats.tx_dropped = 0; /* not available from fw */ | |
1135 | card->wandev.stats.collisions = 0; /* not available from fw */ | |
1136 | card->wandev.stats.tx_errors = 0; /* not available from fw */ | |
1137 | ||
1138 | cycx_x25_dump_devs(&card->wandev); | |
1139 | ||
1140 | return 0; | |
1141 | } | |
1142 | ||
1143 | /* return the number of nibbles */ | |
1144 | static int byte_to_nibble(u8 *s, u8 *d, char *nibble) | |
1145 | { | |
1146 | int i = 0; | |
1147 | ||
1148 | if (*nibble && *s) { | |
1149 | d[i] |= *s++ - '0'; | |
1150 | *nibble = 0; | |
1151 | ++i; | |
1152 | } | |
1153 | ||
1154 | while (*s) { | |
1155 | d[i] = (*s - '0') << 4; | |
1156 | if (*(s + 1)) | |
1157 | d[i] |= *(s + 1) - '0'; | |
1158 | else { | |
1159 | *nibble = 1; | |
1160 | break; | |
1161 | } | |
1162 | ++i; | |
1163 | s += 2; | |
1164 | } | |
1165 | ||
1166 | return i; | |
1167 | } | |
1168 | ||
1169 | static void nibble_to_byte(u8 *s, u8 *d, u8 len, u8 nibble) | |
1170 | { | |
1171 | if (nibble) { | |
1172 | *d++ = '0' + (*s++ & 0x0F); | |
1173 | --len; | |
1174 | } | |
1175 | ||
1176 | while (len) { | |
1177 | *d++ = '0' + (*s >> 4); | |
1178 | ||
1179 | if (--len) { | |
1180 | *d++ = '0' + (*s & 0x0F); | |
1181 | --len; | |
1182 | } else break; | |
1183 | ||
1184 | ++s; | |
1185 | } | |
1186 | ||
1187 | *d = '\0'; | |
1188 | } | |
1189 | ||
1190 | /* Place X.25 call. */ | |
1191 | static int x25_place_call(struct cycx_device *card, | |
1192 | struct cycx_x25_channel *chan) | |
1193 | { | |
1194 | int err = 0, | |
1195 | len; | |
1196 | char d[64], | |
1197 | nibble = 0, | |
1198 | mylen = chan->local_addr ? strlen(chan->local_addr) : 0, | |
1199 | remotelen = strlen(chan->addr); | |
1200 | u8 key; | |
1201 | ||
1202 | if (card->u.x.connection_keys == ~0U) { | |
1203 | printk(KERN_INFO "%s: too many simultaneous connection " | |
1204 | "requests!\n", card->devname); | |
1205 | return -EAGAIN; | |
1206 | } | |
1207 | ||
1208 | key = ffz(card->u.x.connection_keys); | |
1209 | set_bit(key, (void*)&card->u.x.connection_keys); | |
1210 | ++key; | |
1211 | dprintk(1, KERN_INFO "%s:x25_place_call:key=%d\n", card->devname, key); | |
1212 | memset(d, 0, sizeof(d)); | |
1213 | d[1] = key; /* user key */ | |
1214 | d[2] = 0x10; | |
1215 | d[4] = 0x0B; | |
1216 | ||
1217 | len = byte_to_nibble(chan->addr, d + 6, &nibble); | |
1218 | ||
1219 | if (chan->local_addr) | |
1220 | len += byte_to_nibble(chan->local_addr, d + 6 + len, &nibble); | |
1221 | ||
1222 | if (nibble) | |
1223 | ++len; | |
1224 | ||
1225 | d[5] = mylen << 4 | remotelen; | |
1226 | d[6 + len + 1] = 0xCC; /* TCP/IP over X.25, thanks to Daniela :) */ | |
1227 | ||
1228 | if ((err = x25_exec(card, X25_CONNECT_REQUEST, chan->link, | |
1229 | &d, 7 + len + 1, NULL, 0)) != 0) | |
1230 | clear_bit(--key, (void*)&card->u.x.connection_keys); | |
1231 | else | |
1232 | chan->lcn = -key; | |
1233 | ||
1234 | return err; | |
1235 | } | |
1236 | ||
1237 | /* Place X.25 CONNECT RESPONSE. */ | |
1238 | static int cycx_x25_connect_response(struct cycx_device *card, | |
1239 | struct cycx_x25_channel *chan) | |
1240 | { | |
1241 | u8 d[8]; | |
1242 | ||
1243 | memset(d, 0, sizeof(d)); | |
1244 | d[0] = d[3] = chan->lcn; | |
1245 | d[2] = 0x10; | |
1246 | d[4] = 0x0F; | |
1247 | d[7] = 0xCC; /* TCP/IP over X.25, thanks Daniela */ | |
1248 | ||
1249 | return x25_exec(card, X25_CONNECT_RESPONSE, chan->link, &d, 8, NULL, 0); | |
1250 | } | |
1251 | ||
1252 | /* Place X.25 DISCONNECT RESPONSE. */ | |
1253 | static int cycx_x25_disconnect_response(struct cycx_device *card, u8 link, | |
1254 | u8 lcn) | |
1255 | { | |
1256 | char d[5]; | |
1257 | ||
1258 | memset(d, 0, sizeof(d)); | |
1259 | d[0] = d[3] = lcn; | |
1260 | d[2] = 0x10; | |
1261 | d[4] = 0x17; | |
1262 | ||
1263 | return x25_exec(card, X25_DISCONNECT_RESPONSE, link, &d, 5, NULL, 0); | |
1264 | } | |
1265 | ||
1266 | /* Clear X.25 call. */ | |
1267 | static int x25_clear_call(struct cycx_device *card, u8 link, u8 lcn, u8 cause, | |
1268 | u8 diagn) | |
1269 | { | |
1270 | u8 d[7]; | |
1271 | ||
1272 | memset(d, 0, sizeof(d)); | |
1273 | d[0] = d[3] = lcn; | |
1274 | d[2] = 0x10; | |
1275 | d[4] = 0x13; | |
1276 | d[5] = cause; | |
1277 | d[6] = diagn; | |
1278 | ||
1279 | return x25_exec(card, X25_DISCONNECT_REQUEST, link, d, 7, NULL, 0); | |
1280 | } | |
1281 | ||
1282 | /* Send X.25 data packet. */ | |
1283 | static int cycx_x25_send(struct cycx_device *card, u8 link, u8 lcn, u8 bitm, | |
1284 | int len, void *buf) | |
1285 | { | |
1286 | u8 d[] = "?\xFF\x10??"; | |
1287 | ||
1288 | d[0] = d[3] = lcn; | |
1289 | d[4] = bitm; | |
1290 | ||
1291 | return x25_exec(card, X25_DATA_REQUEST, link, &d, 5, buf, len); | |
1292 | } | |
1293 | ||
1294 | /* Miscellaneous */ | |
1295 | /* Find network device by its channel number. */ | |
1296 | static struct net_device *cycx_x25_get_dev_by_lcn(struct wan_device *wandev, | |
1297 | s16 lcn) | |
1298 | { | |
1299 | struct net_device *dev = wandev->dev; | |
1300 | struct cycx_x25_channel *chan; | |
1301 | ||
1302 | while (dev) { | |
7be6065b | 1303 | chan = netdev_priv(dev); |
1da177e4 LT |
1304 | |
1305 | if (chan->lcn == lcn) | |
1306 | break; | |
1307 | dev = chan->slave; | |
1308 | } | |
1309 | return dev; | |
1310 | } | |
1311 | ||
1312 | /* Find network device by its remote dte address. */ | |
1313 | static struct net_device * | |
1314 | cycx_x25_get_dev_by_dte_addr(struct wan_device *wandev, char *dte) | |
1315 | { | |
1316 | struct net_device *dev = wandev->dev; | |
1317 | struct cycx_x25_channel *chan; | |
1318 | ||
1319 | while (dev) { | |
7be6065b | 1320 | chan = netdev_priv(dev); |
1da177e4 LT |
1321 | |
1322 | if (!strcmp(chan->addr, dte)) | |
1323 | break; | |
1324 | dev = chan->slave; | |
1325 | } | |
1326 | return dev; | |
1327 | } | |
1328 | ||
1329 | /* Initiate connection on the logical channel. | |
1330 | * o for PVC we just get channel configuration | |
1331 | * o for SVCs place an X.25 call | |
1332 | * | |
1333 | * Return: 0 connected | |
1334 | * >0 connection in progress | |
1335 | * <0 failure */ | |
1336 | static int cycx_x25_chan_connect(struct net_device *dev) | |
1337 | { | |
7be6065b | 1338 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
1339 | struct cycx_device *card = chan->card; |
1340 | ||
1341 | if (chan->svc) { | |
1342 | if (!chan->addr[0]) | |
1343 | return -EINVAL; /* no destination address */ | |
1344 | ||
1345 | dprintk(1, KERN_INFO "%s: placing X.25 call to %s...\n", | |
1346 | card->devname, chan->addr); | |
1347 | ||
1348 | if (x25_place_call(card, chan)) | |
1349 | return -EIO; | |
1350 | ||
1351 | cycx_x25_set_chan_state(dev, WAN_CONNECTING); | |
1352 | return 1; | |
1353 | } else | |
1354 | cycx_x25_set_chan_state(dev, WAN_CONNECTED); | |
1355 | ||
1356 | return 0; | |
1357 | } | |
1358 | ||
1359 | /* Disconnect logical channel. | |
1360 | * o if SVC then clear X.25 call */ | |
1361 | static void cycx_x25_chan_disconnect(struct net_device *dev) | |
1362 | { | |
7be6065b | 1363 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
1364 | |
1365 | if (chan->svc) { | |
1366 | x25_clear_call(chan->card, chan->link, chan->lcn, 0, 0); | |
1367 | cycx_x25_set_chan_state(dev, WAN_DISCONNECTING); | |
1368 | } else | |
1369 | cycx_x25_set_chan_state(dev, WAN_DISCONNECTED); | |
1370 | } | |
1371 | ||
1372 | /* Called by kernel timer */ | |
1373 | static void cycx_x25_chan_timer(unsigned long d) | |
1374 | { | |
1375 | struct net_device *dev = (struct net_device *)d; | |
7be6065b | 1376 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
1377 | |
1378 | if (chan->state == WAN_CONNECTED) | |
1379 | cycx_x25_chan_disconnect(dev); | |
1380 | else | |
1381 | printk(KERN_ERR "%s: %s for svc (%s) not connected!\n", | |
b39d66a8 | 1382 | chan->card->devname, __func__, dev->name); |
1da177e4 LT |
1383 | } |
1384 | ||
1385 | /* Set logical channel state. */ | |
1386 | static void cycx_x25_set_chan_state(struct net_device *dev, u8 state) | |
1387 | { | |
7be6065b | 1388 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
1389 | struct cycx_device *card = chan->card; |
1390 | unsigned long flags; | |
1391 | char *string_state = NULL; | |
1392 | ||
1393 | spin_lock_irqsave(&card->lock, flags); | |
1394 | ||
1395 | if (chan->state != state) { | |
1396 | if (chan->svc && chan->state == WAN_CONNECTED) | |
1397 | del_timer(&chan->timer); | |
1398 | ||
1399 | switch (state) { | |
1400 | case WAN_CONNECTED: | |
1401 | string_state = "connected!"; | |
7fd71e58 | 1402 | *(__be16*)dev->dev_addr = htons(chan->lcn); |
1da177e4 LT |
1403 | netif_wake_queue(dev); |
1404 | reset_timer(dev); | |
1405 | ||
1406 | if (chan->protocol == ETH_P_X25) | |
1407 | cycx_x25_chan_send_event(dev, 1); | |
1408 | ||
1409 | break; | |
1410 | case WAN_CONNECTING: | |
1411 | string_state = "connecting..."; | |
1412 | break; | |
1413 | case WAN_DISCONNECTING: | |
1414 | string_state = "disconnecting..."; | |
1415 | break; | |
1416 | case WAN_DISCONNECTED: | |
1417 | string_state = "disconnected!"; | |
1418 | ||
1419 | if (chan->svc) { | |
1420 | *(unsigned short*)dev->dev_addr = 0; | |
1421 | chan->lcn = 0; | |
1422 | } | |
1423 | ||
1424 | if (chan->protocol == ETH_P_X25) | |
1425 | cycx_x25_chan_send_event(dev, 2); | |
1426 | ||
1427 | netif_wake_queue(dev); | |
1428 | break; | |
1429 | } | |
1430 | ||
1431 | printk(KERN_INFO "%s: interface %s %s\n", card->devname, | |
1432 | dev->name, string_state); | |
1433 | chan->state = state; | |
1434 | } | |
1435 | ||
1436 | spin_unlock_irqrestore(&card->lock, flags); | |
1437 | } | |
1438 | ||
1439 | /* Send packet on a logical channel. | |
1440 | * When this function is called, tx_skb field of the channel data space | |
1441 | * points to the transmit socket buffer. When transmission is complete, | |
1442 | * release socket buffer and reset 'tbusy' flag. | |
1443 | * | |
1444 | * Return: 0 - transmission complete | |
1445 | * 1 - busy | |
1446 | * | |
1447 | * Notes: | |
1448 | * 1. If packet length is greater than MTU for this channel, we'll fragment | |
1449 | * the packet into 'complete sequence' using M-bit. | |
1450 | * 2. When transmission is complete, an event notification should be issued | |
1451 | * to the router. */ | |
1452 | static int cycx_x25_chan_send(struct net_device *dev, struct sk_buff *skb) | |
1453 | { | |
7be6065b | 1454 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
1455 | struct cycx_device *card = chan->card; |
1456 | int bitm = 0; /* final packet */ | |
1457 | unsigned len = skb->len; | |
1458 | ||
1459 | if (skb->len > card->wandev.mtu) { | |
1460 | len = card->wandev.mtu; | |
1461 | bitm = 0x10; /* set M-bit (more data) */ | |
1462 | } | |
1463 | ||
1464 | if (cycx_x25_send(card, chan->link, chan->lcn, bitm, len, skb->data)) | |
1465 | return 1; | |
1466 | ||
1467 | if (bitm) { | |
1468 | skb_pull(skb, len); | |
1469 | return 1; | |
1470 | } | |
1471 | ||
1472 | ++chan->ifstats.tx_packets; | |
1473 | chan->ifstats.tx_bytes += len; | |
1474 | ||
1475 | return 0; | |
1476 | } | |
1477 | ||
1478 | /* Send event (connection, disconnection, etc) to X.25 socket layer */ | |
1479 | ||
1480 | static void cycx_x25_chan_send_event(struct net_device *dev, u8 event) | |
1481 | { | |
1482 | struct sk_buff *skb; | |
1483 | unsigned char *ptr; | |
1484 | ||
1485 | if ((skb = dev_alloc_skb(1)) == NULL) { | |
b39d66a8 | 1486 | printk(KERN_ERR "%s: out of memory\n", __func__); |
1da177e4 LT |
1487 | return; |
1488 | } | |
1489 | ||
1490 | ptr = skb_put(skb, 1); | |
1491 | *ptr = event; | |
1492 | ||
1493 | skb->protocol = x25_type_trans(skb, dev); | |
1494 | netif_rx(skb); | |
1da177e4 LT |
1495 | } |
1496 | ||
1497 | /* Convert line speed in bps to a number used by cyclom 2x code. */ | |
1498 | static u8 bps_to_speed_code(u32 bps) | |
1499 | { | |
1500 | u8 number = 0; /* defaults to the lowest (1200) speed ;> */ | |
1501 | ||
1502 | if (bps >= 512000) number = 8; | |
1503 | else if (bps >= 256000) number = 7; | |
1504 | else if (bps >= 64000) number = 6; | |
1505 | else if (bps >= 38400) number = 5; | |
1506 | else if (bps >= 19200) number = 4; | |
1507 | else if (bps >= 9600) number = 3; | |
1508 | else if (bps >= 4800) number = 2; | |
1509 | else if (bps >= 2400) number = 1; | |
1510 | ||
1511 | return number; | |
1512 | } | |
1513 | ||
1514 | /* log base 2 */ | |
1515 | static u8 cycx_log2(u32 n) | |
1516 | { | |
1517 | u8 log = 0; | |
1518 | ||
1519 | if (!n) | |
1520 | return 0; | |
1521 | ||
1522 | while (n > 1) { | |
1523 | n >>= 1; | |
1524 | ++log; | |
1525 | } | |
1526 | ||
1527 | return log; | |
1528 | } | |
1529 | ||
1530 | /* Convert decimal string to unsigned integer. | |
1531 | * If len != 0 then only 'len' characters of the string are converted. */ | |
1532 | static unsigned dec_to_uint(u8 *str, int len) | |
1533 | { | |
1534 | unsigned val = 0; | |
1535 | ||
1536 | if (!len) | |
1537 | len = strlen(str); | |
1538 | ||
8e18d1f9 | 1539 | for (; len && isdigit(*str); ++str, --len) |
1da177e4 LT |
1540 | val = (val * 10) + (*str - (unsigned) '0'); |
1541 | ||
1542 | return val; | |
1543 | } | |
1544 | ||
1545 | static void reset_timer(struct net_device *dev) | |
1546 | { | |
7be6065b | 1547 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
1548 | |
1549 | if (chan->svc) | |
1550 | mod_timer(&chan->timer, jiffies+chan->idle_tmout*HZ); | |
1551 | } | |
1552 | #ifdef CYCLOMX_X25_DEBUG | |
1553 | static void cycx_x25_dump_config(struct cycx_x25_config *conf) | |
1554 | { | |
1555 | printk(KERN_INFO "X.25 configuration\n"); | |
1556 | printk(KERN_INFO "-----------------\n"); | |
1557 | printk(KERN_INFO "link number=%d\n", conf->link); | |
1558 | printk(KERN_INFO "line speed=%d\n", conf->speed); | |
1559 | printk(KERN_INFO "clock=%sternal\n", conf->clock == 8 ? "Ex" : "In"); | |
1560 | printk(KERN_INFO "# level 2 retransm.=%d\n", conf->n2); | |
1561 | printk(KERN_INFO "level 2 window=%d\n", conf->n2win); | |
1562 | printk(KERN_INFO "level 3 window=%d\n", conf->n3win); | |
1563 | printk(KERN_INFO "# logical channels=%d\n", conf->nvc); | |
1564 | printk(KERN_INFO "level 3 pkt len=%d\n", conf->pktlen); | |
1565 | printk(KERN_INFO "my address=%d\n", conf->locaddr); | |
1566 | printk(KERN_INFO "remote address=%d\n", conf->remaddr); | |
1567 | printk(KERN_INFO "t1=%d seconds\n", conf->t1); | |
1568 | printk(KERN_INFO "t2=%d seconds\n", conf->t2); | |
1569 | printk(KERN_INFO "t21=%d seconds\n", conf->t21); | |
1570 | printk(KERN_INFO "# PVCs=%d\n", conf->npvc); | |
1571 | printk(KERN_INFO "t23=%d seconds\n", conf->t23); | |
1572 | printk(KERN_INFO "flags=0x%x\n", conf->flags); | |
1573 | } | |
1574 | ||
1575 | static void cycx_x25_dump_stats(struct cycx_x25_stats *stats) | |
1576 | { | |
1577 | printk(KERN_INFO "X.25 statistics\n"); | |
1578 | printk(KERN_INFO "--------------\n"); | |
1579 | printk(KERN_INFO "rx_crc_errors=%d\n", stats->rx_crc_errors); | |
1580 | printk(KERN_INFO "rx_over_errors=%d\n", stats->rx_over_errors); | |
1581 | printk(KERN_INFO "n2_tx_frames=%d\n", stats->n2_tx_frames); | |
1582 | printk(KERN_INFO "n2_rx_frames=%d\n", stats->n2_rx_frames); | |
1583 | printk(KERN_INFO "tx_timeouts=%d\n", stats->tx_timeouts); | |
1584 | printk(KERN_INFO "rx_timeouts=%d\n", stats->rx_timeouts); | |
1585 | printk(KERN_INFO "n3_tx_packets=%d\n", stats->n3_tx_packets); | |
1586 | printk(KERN_INFO "n3_rx_packets=%d\n", stats->n3_rx_packets); | |
1587 | printk(KERN_INFO "tx_aborts=%d\n", stats->tx_aborts); | |
1588 | printk(KERN_INFO "rx_aborts=%d\n", stats->rx_aborts); | |
1589 | } | |
1590 | ||
1591 | static void cycx_x25_dump_devs(struct wan_device *wandev) | |
1592 | { | |
1593 | struct net_device *dev = wandev->dev; | |
1594 | ||
1595 | printk(KERN_INFO "X.25 dev states\n"); | |
1596 | printk(KERN_INFO "name: addr: txoff: protocol:\n"); | |
1597 | printk(KERN_INFO "---------------------------------------\n"); | |
1598 | ||
1599 | while(dev) { | |
7be6065b | 1600 | struct cycx_x25_channel *chan = netdev_priv(dev); |
1da177e4 LT |
1601 | |
1602 | printk(KERN_INFO "%-5.5s %-15.15s %d ETH_P_%s\n", | |
1603 | chan->name, chan->addr, netif_queue_stopped(dev), | |
1604 | chan->protocol == ETH_P_IP ? "IP" : "X25"); | |
1605 | dev = chan->slave; | |
1606 | } | |
1607 | } | |
1608 | ||
1609 | #endif /* CYCLOMX_X25_DEBUG */ | |
1610 | /* End */ |