]>
Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * IUCV network driver |
3 | * | |
4 | * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation | |
5 | * Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com) | |
6 | * | |
4ce3b30c CH |
7 | * Sysfs integration and all bugs therein by Cornelia Huck |
8 | * (cornelia.huck@de.ibm.com) | |
1da177e4 LT |
9 | * |
10 | * Documentation used: | |
11 | * the source of the original IUCV driver by: | |
12 | * Stefan Hegewald <hegewald@de.ibm.com> | |
13 | * Hartmut Penner <hpenner@de.ibm.com> | |
14 | * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) | |
15 | * Martin Schwidefsky (schwidefsky@de.ibm.com) | |
16 | * Alan Altmark (Alan_Altmark@us.ibm.com) Sept. 2000 | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or modify | |
19 | * it under the terms of the GNU General Public License as published by | |
20 | * the Free Software Foundation; either version 2, or (at your option) | |
21 | * any later version. | |
22 | * | |
23 | * This program is distributed in the hope that it will be useful, | |
24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | * GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License | |
29 | * along with this program; if not, write to the Free Software | |
30 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
31 | * | |
1da177e4 LT |
32 | */ |
33 | \f | |
34 | #undef DEBUG | |
35 | ||
36 | #include <linux/module.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/slab.h> | |
40 | #include <linux/errno.h> | |
41 | #include <linux/types.h> | |
42 | #include <linux/interrupt.h> | |
43 | #include <linux/timer.h> | |
44 | #include <linux/sched.h> | |
45 | #include <linux/bitops.h> | |
46 | ||
47 | #include <linux/signal.h> | |
48 | #include <linux/string.h> | |
49 | #include <linux/device.h> | |
50 | ||
51 | #include <linux/ip.h> | |
52 | #include <linux/if_arp.h> | |
53 | #include <linux/tcp.h> | |
54 | #include <linux/skbuff.h> | |
55 | #include <linux/ctype.h> | |
56 | #include <net/dst.h> | |
57 | ||
58 | #include <asm/io.h> | |
59 | #include <asm/uaccess.h> | |
60 | ||
61 | #include "iucv.h" | |
62 | #include "fsm.h" | |
63 | ||
64 | MODULE_AUTHOR | |
65 | ("(C) 2001 IBM Corporation by Fritz Elfert (felfert@millenux.com)"); | |
66 | MODULE_DESCRIPTION ("Linux for S/390 IUCV network driver"); | |
67 | ||
68 | \f | |
69 | #define PRINTK_HEADER " iucv: " /* for debugging */ | |
70 | ||
71 | static struct device_driver netiucv_driver = { | |
72 | .name = "netiucv", | |
73 | .bus = &iucv_bus, | |
74 | }; | |
75 | ||
76 | /** | |
77 | * Per connection profiling data | |
78 | */ | |
79 | struct connection_profile { | |
80 | unsigned long maxmulti; | |
81 | unsigned long maxcqueue; | |
82 | unsigned long doios_single; | |
83 | unsigned long doios_multi; | |
84 | unsigned long txlen; | |
85 | unsigned long tx_time; | |
86 | struct timespec send_stamp; | |
87 | unsigned long tx_pending; | |
88 | unsigned long tx_max_pending; | |
89 | }; | |
90 | ||
91 | /** | |
92 | * Representation of one iucv connection | |
93 | */ | |
94 | struct iucv_connection { | |
95 | struct iucv_connection *next; | |
96 | iucv_handle_t handle; | |
97 | __u16 pathid; | |
98 | struct sk_buff *rx_buff; | |
99 | struct sk_buff *tx_buff; | |
100 | struct sk_buff_head collect_queue; | |
101 | struct sk_buff_head commit_queue; | |
102 | spinlock_t collect_lock; | |
103 | int collect_len; | |
104 | int max_buffsize; | |
105 | fsm_timer timer; | |
106 | fsm_instance *fsm; | |
107 | struct net_device *netdev; | |
108 | struct connection_profile prof; | |
109 | char userid[9]; | |
110 | }; | |
111 | ||
112 | /** | |
113 | * Linked list of all connection structs. | |
114 | */ | |
115 | static struct iucv_connection *iucv_connections; | |
116 | ||
117 | /** | |
118 | * Representation of event-data for the | |
119 | * connection state machine. | |
120 | */ | |
121 | struct iucv_event { | |
122 | struct iucv_connection *conn; | |
123 | void *data; | |
124 | }; | |
125 | ||
126 | /** | |
127 | * Private part of the network device structure | |
128 | */ | |
129 | struct netiucv_priv { | |
130 | struct net_device_stats stats; | |
131 | unsigned long tbusy; | |
132 | fsm_instance *fsm; | |
133 | struct iucv_connection *conn; | |
134 | struct device *dev; | |
135 | }; | |
136 | ||
137 | /** | |
138 | * Link level header for a packet. | |
139 | */ | |
140 | typedef struct ll_header_t { | |
141 | __u16 next; | |
142 | } ll_header; | |
143 | ||
144 | #define NETIUCV_HDRLEN (sizeof(ll_header)) | |
145 | #define NETIUCV_BUFSIZE_MAX 32768 | |
146 | #define NETIUCV_BUFSIZE_DEFAULT NETIUCV_BUFSIZE_MAX | |
147 | #define NETIUCV_MTU_MAX (NETIUCV_BUFSIZE_MAX - NETIUCV_HDRLEN) | |
148 | #define NETIUCV_MTU_DEFAULT 9216 | |
149 | #define NETIUCV_QUEUELEN_DEFAULT 50 | |
150 | #define NETIUCV_TIMEOUT_5SEC 5000 | |
151 | ||
152 | /** | |
153 | * Compatibility macros for busy handling | |
154 | * of network devices. | |
155 | */ | |
156 | static __inline__ void netiucv_clear_busy(struct net_device *dev) | |
157 | { | |
158 | clear_bit(0, &(((struct netiucv_priv *)dev->priv)->tbusy)); | |
159 | netif_wake_queue(dev); | |
160 | } | |
161 | ||
162 | static __inline__ int netiucv_test_and_set_busy(struct net_device *dev) | |
163 | { | |
164 | netif_stop_queue(dev); | |
165 | return test_and_set_bit(0, &((struct netiucv_priv *)dev->priv)->tbusy); | |
166 | } | |
167 | ||
168 | static __u8 iucv_host[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
169 | static __u8 iucvMagic[16] = { | |
170 | 0xF0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, | |
171 | 0xF0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40 | |
172 | }; | |
173 | ||
174 | /** | |
175 | * This mask means the 16-byte IUCV "magic" and the origin userid must | |
176 | * match exactly as specified in order to give connection_pending() | |
177 | * control. | |
178 | */ | |
179 | static __u8 netiucv_mask[] = { | |
180 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
181 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
182 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff | |
183 | }; | |
184 | ||
185 | /** | |
186 | * Convert an iucv userId to its printable | |
187 | * form (strip whitespace at end). | |
188 | * | |
189 | * @param An iucv userId | |
190 | * | |
191 | * @returns The printable string (static data!!) | |
192 | */ | |
193 | static __inline__ char * | |
194 | netiucv_printname(char *name) | |
195 | { | |
196 | static char tmp[9]; | |
197 | char *p = tmp; | |
198 | memcpy(tmp, name, 8); | |
199 | tmp[8] = '\0'; | |
200 | while (*p && (!isspace(*p))) | |
201 | p++; | |
202 | *p = '\0'; | |
203 | return tmp; | |
204 | } | |
205 | \f | |
206 | /** | |
207 | * States of the interface statemachine. | |
208 | */ | |
209 | enum dev_states { | |
210 | DEV_STATE_STOPPED, | |
211 | DEV_STATE_STARTWAIT, | |
212 | DEV_STATE_STOPWAIT, | |
213 | DEV_STATE_RUNNING, | |
214 | /** | |
215 | * MUST be always the last element!! | |
216 | */ | |
217 | NR_DEV_STATES | |
218 | }; | |
219 | ||
220 | static const char *dev_state_names[] = { | |
221 | "Stopped", | |
222 | "StartWait", | |
223 | "StopWait", | |
224 | "Running", | |
225 | }; | |
226 | ||
227 | /** | |
228 | * Events of the interface statemachine. | |
229 | */ | |
230 | enum dev_events { | |
231 | DEV_EVENT_START, | |
232 | DEV_EVENT_STOP, | |
233 | DEV_EVENT_CONUP, | |
234 | DEV_EVENT_CONDOWN, | |
235 | /** | |
236 | * MUST be always the last element!! | |
237 | */ | |
238 | NR_DEV_EVENTS | |
239 | }; | |
240 | ||
241 | static const char *dev_event_names[] = { | |
242 | "Start", | |
243 | "Stop", | |
244 | "Connection up", | |
245 | "Connection down", | |
246 | }; | |
247 | \f | |
248 | /** | |
249 | * Events of the connection statemachine | |
250 | */ | |
251 | enum conn_events { | |
252 | /** | |
253 | * Events, representing callbacks from | |
254 | * lowlevel iucv layer) | |
255 | */ | |
256 | CONN_EVENT_CONN_REQ, | |
257 | CONN_EVENT_CONN_ACK, | |
258 | CONN_EVENT_CONN_REJ, | |
259 | CONN_EVENT_CONN_SUS, | |
260 | CONN_EVENT_CONN_RES, | |
261 | CONN_EVENT_RX, | |
262 | CONN_EVENT_TXDONE, | |
263 | ||
264 | /** | |
265 | * Events, representing errors return codes from | |
266 | * calls to lowlevel iucv layer | |
267 | */ | |
268 | ||
269 | /** | |
270 | * Event, representing timer expiry. | |
271 | */ | |
272 | CONN_EVENT_TIMER, | |
273 | ||
274 | /** | |
275 | * Events, representing commands from upper levels. | |
276 | */ | |
277 | CONN_EVENT_START, | |
278 | CONN_EVENT_STOP, | |
279 | ||
280 | /** | |
281 | * MUST be always the last element!! | |
282 | */ | |
283 | NR_CONN_EVENTS, | |
284 | }; | |
285 | ||
286 | static const char *conn_event_names[] = { | |
287 | "Remote connection request", | |
288 | "Remote connection acknowledge", | |
289 | "Remote connection reject", | |
290 | "Connection suspended", | |
291 | "Connection resumed", | |
292 | "Data received", | |
293 | "Data sent", | |
294 | ||
295 | "Timer", | |
296 | ||
297 | "Start", | |
298 | "Stop", | |
299 | }; | |
300 | ||
301 | /** | |
302 | * States of the connection statemachine. | |
303 | */ | |
304 | enum conn_states { | |
305 | /** | |
306 | * Connection not assigned to any device, | |
307 | * initial state, invalid | |
308 | */ | |
309 | CONN_STATE_INVALID, | |
310 | ||
311 | /** | |
312 | * Userid assigned but not operating | |
313 | */ | |
314 | CONN_STATE_STOPPED, | |
315 | ||
316 | /** | |
317 | * Connection registered, | |
318 | * no connection request sent yet, | |
319 | * no connection request received | |
320 | */ | |
321 | CONN_STATE_STARTWAIT, | |
322 | ||
323 | /** | |
324 | * Connection registered and connection request sent, | |
325 | * no acknowledge and no connection request received yet. | |
326 | */ | |
327 | CONN_STATE_SETUPWAIT, | |
328 | ||
329 | /** | |
330 | * Connection up and running idle | |
331 | */ | |
332 | CONN_STATE_IDLE, | |
333 | ||
334 | /** | |
335 | * Data sent, awaiting CONN_EVENT_TXDONE | |
336 | */ | |
337 | CONN_STATE_TX, | |
338 | ||
339 | /** | |
340 | * Error during registration. | |
341 | */ | |
342 | CONN_STATE_REGERR, | |
343 | ||
344 | /** | |
345 | * Error during registration. | |
346 | */ | |
347 | CONN_STATE_CONNERR, | |
348 | ||
349 | /** | |
350 | * MUST be always the last element!! | |
351 | */ | |
352 | NR_CONN_STATES, | |
353 | }; | |
354 | ||
355 | static const char *conn_state_names[] = { | |
356 | "Invalid", | |
357 | "Stopped", | |
358 | "StartWait", | |
359 | "SetupWait", | |
360 | "Idle", | |
361 | "TX", | |
362 | "Terminating", | |
363 | "Registration error", | |
364 | "Connect error", | |
365 | }; | |
366 | ||
367 | \f | |
368 | /** | |
369 | * Debug Facility Stuff | |
370 | */ | |
371 | static debug_info_t *iucv_dbf_setup = NULL; | |
372 | static debug_info_t *iucv_dbf_data = NULL; | |
373 | static debug_info_t *iucv_dbf_trace = NULL; | |
374 | ||
375 | DEFINE_PER_CPU(char[256], iucv_dbf_txt_buf); | |
376 | ||
377 | static void | |
378 | iucv_unregister_dbf_views(void) | |
379 | { | |
380 | if (iucv_dbf_setup) | |
381 | debug_unregister(iucv_dbf_setup); | |
382 | if (iucv_dbf_data) | |
383 | debug_unregister(iucv_dbf_data); | |
384 | if (iucv_dbf_trace) | |
385 | debug_unregister(iucv_dbf_trace); | |
386 | } | |
387 | static int | |
388 | iucv_register_dbf_views(void) | |
389 | { | |
390 | iucv_dbf_setup = debug_register(IUCV_DBF_SETUP_NAME, | |
66a464db | 391 | IUCV_DBF_SETUP_PAGES, |
1da177e4 LT |
392 | IUCV_DBF_SETUP_NR_AREAS, |
393 | IUCV_DBF_SETUP_LEN); | |
394 | iucv_dbf_data = debug_register(IUCV_DBF_DATA_NAME, | |
66a464db | 395 | IUCV_DBF_DATA_PAGES, |
1da177e4 LT |
396 | IUCV_DBF_DATA_NR_AREAS, |
397 | IUCV_DBF_DATA_LEN); | |
398 | iucv_dbf_trace = debug_register(IUCV_DBF_TRACE_NAME, | |
66a464db | 399 | IUCV_DBF_TRACE_PAGES, |
1da177e4 LT |
400 | IUCV_DBF_TRACE_NR_AREAS, |
401 | IUCV_DBF_TRACE_LEN); | |
402 | ||
403 | if ((iucv_dbf_setup == NULL) || (iucv_dbf_data == NULL) || | |
404 | (iucv_dbf_trace == NULL)) { | |
405 | iucv_unregister_dbf_views(); | |
406 | return -ENOMEM; | |
407 | } | |
408 | debug_register_view(iucv_dbf_setup, &debug_hex_ascii_view); | |
409 | debug_set_level(iucv_dbf_setup, IUCV_DBF_SETUP_LEVEL); | |
410 | ||
411 | debug_register_view(iucv_dbf_data, &debug_hex_ascii_view); | |
412 | debug_set_level(iucv_dbf_data, IUCV_DBF_DATA_LEVEL); | |
413 | ||
414 | debug_register_view(iucv_dbf_trace, &debug_hex_ascii_view); | |
415 | debug_set_level(iucv_dbf_trace, IUCV_DBF_TRACE_LEVEL); | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
420 | /** | |
421 | * Callback-wrappers, called from lowlevel iucv layer. | |
422 | *****************************************************************************/ | |
423 | ||
424 | static void | |
425 | netiucv_callback_rx(iucv_MessagePending *eib, void *pgm_data) | |
426 | { | |
427 | struct iucv_connection *conn = (struct iucv_connection *)pgm_data; | |
428 | struct iucv_event ev; | |
429 | ||
430 | ev.conn = conn; | |
431 | ev.data = (void *)eib; | |
432 | ||
433 | fsm_event(conn->fsm, CONN_EVENT_RX, &ev); | |
434 | } | |
435 | ||
436 | static void | |
437 | netiucv_callback_txdone(iucv_MessageComplete *eib, void *pgm_data) | |
438 | { | |
439 | struct iucv_connection *conn = (struct iucv_connection *)pgm_data; | |
440 | struct iucv_event ev; | |
441 | ||
442 | ev.conn = conn; | |
443 | ev.data = (void *)eib; | |
444 | fsm_event(conn->fsm, CONN_EVENT_TXDONE, &ev); | |
445 | } | |
446 | ||
447 | static void | |
448 | netiucv_callback_connack(iucv_ConnectionComplete *eib, void *pgm_data) | |
449 | { | |
450 | struct iucv_connection *conn = (struct iucv_connection *)pgm_data; | |
451 | struct iucv_event ev; | |
452 | ||
453 | ev.conn = conn; | |
454 | ev.data = (void *)eib; | |
455 | fsm_event(conn->fsm, CONN_EVENT_CONN_ACK, &ev); | |
456 | } | |
457 | ||
458 | static void | |
459 | netiucv_callback_connreq(iucv_ConnectionPending *eib, void *pgm_data) | |
460 | { | |
461 | struct iucv_connection *conn = (struct iucv_connection *)pgm_data; | |
462 | struct iucv_event ev; | |
463 | ||
464 | ev.conn = conn; | |
465 | ev.data = (void *)eib; | |
466 | fsm_event(conn->fsm, CONN_EVENT_CONN_REQ, &ev); | |
467 | } | |
468 | ||
469 | static void | |
470 | netiucv_callback_connrej(iucv_ConnectionSevered *eib, void *pgm_data) | |
471 | { | |
472 | struct iucv_connection *conn = (struct iucv_connection *)pgm_data; | |
473 | struct iucv_event ev; | |
474 | ||
475 | ev.conn = conn; | |
476 | ev.data = (void *)eib; | |
477 | fsm_event(conn->fsm, CONN_EVENT_CONN_REJ, &ev); | |
478 | } | |
479 | ||
480 | static void | |
481 | netiucv_callback_connsusp(iucv_ConnectionQuiesced *eib, void *pgm_data) | |
482 | { | |
483 | struct iucv_connection *conn = (struct iucv_connection *)pgm_data; | |
484 | struct iucv_event ev; | |
485 | ||
486 | ev.conn = conn; | |
487 | ev.data = (void *)eib; | |
488 | fsm_event(conn->fsm, CONN_EVENT_CONN_SUS, &ev); | |
489 | } | |
490 | ||
491 | static void | |
492 | netiucv_callback_connres(iucv_ConnectionResumed *eib, void *pgm_data) | |
493 | { | |
494 | struct iucv_connection *conn = (struct iucv_connection *)pgm_data; | |
495 | struct iucv_event ev; | |
496 | ||
497 | ev.conn = conn; | |
498 | ev.data = (void *)eib; | |
499 | fsm_event(conn->fsm, CONN_EVENT_CONN_RES, &ev); | |
500 | } | |
501 | ||
502 | static iucv_interrupt_ops_t netiucv_ops = { | |
503 | .ConnectionPending = netiucv_callback_connreq, | |
504 | .ConnectionComplete = netiucv_callback_connack, | |
505 | .ConnectionSevered = netiucv_callback_connrej, | |
506 | .ConnectionQuiesced = netiucv_callback_connsusp, | |
507 | .ConnectionResumed = netiucv_callback_connres, | |
508 | .MessagePending = netiucv_callback_rx, | |
509 | .MessageComplete = netiucv_callback_txdone | |
510 | }; | |
511 | ||
512 | /** | |
513 | * Dummy NOP action for all statemachines | |
514 | */ | |
515 | static void | |
516 | fsm_action_nop(fsm_instance *fi, int event, void *arg) | |
517 | { | |
518 | } | |
519 | \f | |
520 | /** | |
521 | * Actions of the connection statemachine | |
522 | *****************************************************************************/ | |
523 | ||
524 | /** | |
525 | * Helper function for conn_action_rx() | |
526 | * Unpack a just received skb and hand it over to | |
527 | * upper layers. | |
528 | * | |
529 | * @param conn The connection where this skb has been received. | |
530 | * @param pskb The received skb. | |
531 | */ | |
532 | //static __inline__ void | |
533 | static void | |
534 | netiucv_unpack_skb(struct iucv_connection *conn, struct sk_buff *pskb) | |
535 | { | |
536 | struct net_device *dev = conn->netdev; | |
537 | struct netiucv_priv *privptr = dev->priv; | |
538 | __u16 offset = 0; | |
539 | ||
540 | skb_put(pskb, NETIUCV_HDRLEN); | |
541 | pskb->dev = dev; | |
542 | pskb->ip_summed = CHECKSUM_NONE; | |
543 | pskb->protocol = ntohs(ETH_P_IP); | |
544 | ||
545 | while (1) { | |
546 | struct sk_buff *skb; | |
547 | ll_header *header = (ll_header *)pskb->data; | |
548 | ||
549 | if (!header->next) | |
550 | break; | |
551 | ||
552 | skb_pull(pskb, NETIUCV_HDRLEN); | |
553 | header->next -= offset; | |
554 | offset += header->next; | |
555 | header->next -= NETIUCV_HDRLEN; | |
556 | if (skb_tailroom(pskb) < header->next) { | |
557 | PRINT_WARN("%s: Illegal next field in iucv header: " | |
558 | "%d > %d\n", | |
559 | dev->name, header->next, skb_tailroom(pskb)); | |
560 | IUCV_DBF_TEXT_(data, 2, "Illegal next field: %d > %d\n", | |
561 | header->next, skb_tailroom(pskb)); | |
562 | return; | |
563 | } | |
564 | skb_put(pskb, header->next); | |
565 | pskb->mac.raw = pskb->data; | |
566 | skb = dev_alloc_skb(pskb->len); | |
567 | if (!skb) { | |
568 | PRINT_WARN("%s Out of memory in netiucv_unpack_skb\n", | |
569 | dev->name); | |
570 | IUCV_DBF_TEXT(data, 2, | |
571 | "Out of memory in netiucv_unpack_skb\n"); | |
572 | privptr->stats.rx_dropped++; | |
573 | return; | |
574 | } | |
575 | memcpy(skb_put(skb, pskb->len), pskb->data, pskb->len); | |
576 | skb->mac.raw = skb->data; | |
577 | skb->dev = pskb->dev; | |
578 | skb->protocol = pskb->protocol; | |
579 | pskb->ip_summed = CHECKSUM_UNNECESSARY; | |
580 | /* | |
581 | * Since receiving is always initiated from a tasklet (in iucv.c), | |
582 | * we must use netif_rx_ni() instead of netif_rx() | |
583 | */ | |
584 | netif_rx_ni(skb); | |
585 | dev->last_rx = jiffies; | |
586 | privptr->stats.rx_packets++; | |
587 | privptr->stats.rx_bytes += skb->len; | |
588 | skb_pull(pskb, header->next); | |
589 | skb_put(pskb, NETIUCV_HDRLEN); | |
590 | } | |
591 | } | |
592 | ||
593 | static void | |
594 | conn_action_rx(fsm_instance *fi, int event, void *arg) | |
595 | { | |
596 | struct iucv_event *ev = (struct iucv_event *)arg; | |
597 | struct iucv_connection *conn = ev->conn; | |
598 | iucv_MessagePending *eib = (iucv_MessagePending *)ev->data; | |
599 | struct netiucv_priv *privptr =(struct netiucv_priv *)conn->netdev->priv; | |
600 | ||
601 | __u32 msglen = eib->ln1msg2.ipbfln1f; | |
602 | int rc; | |
603 | ||
604 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); | |
605 | ||
606 | if (!conn->netdev) { | |
607 | /* FRITZ: How to tell iucv LL to drop the msg? */ | |
608 | PRINT_WARN("Received data for unlinked connection\n"); | |
609 | IUCV_DBF_TEXT(data, 2, | |
610 | "Received data for unlinked connection\n"); | |
611 | return; | |
612 | } | |
613 | if (msglen > conn->max_buffsize) { | |
614 | /* FRITZ: How to tell iucv LL to drop the msg? */ | |
615 | privptr->stats.rx_dropped++; | |
616 | PRINT_WARN("msglen %d > max_buffsize %d\n", | |
617 | msglen, conn->max_buffsize); | |
618 | IUCV_DBF_TEXT_(data, 2, "msglen %d > max_buffsize %d\n", | |
619 | msglen, conn->max_buffsize); | |
620 | return; | |
621 | } | |
622 | conn->rx_buff->data = conn->rx_buff->tail = conn->rx_buff->head; | |
623 | conn->rx_buff->len = 0; | |
624 | rc = iucv_receive(conn->pathid, eib->ipmsgid, eib->iptrgcls, | |
625 | conn->rx_buff->data, msglen, NULL, NULL, NULL); | |
626 | if (rc || msglen < 5) { | |
627 | privptr->stats.rx_errors++; | |
628 | PRINT_WARN("iucv_receive returned %08x\n", rc); | |
629 | IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_receive\n", rc); | |
630 | return; | |
631 | } | |
632 | netiucv_unpack_skb(conn, conn->rx_buff); | |
633 | } | |
634 | ||
635 | static void | |
636 | conn_action_txdone(fsm_instance *fi, int event, void *arg) | |
637 | { | |
638 | struct iucv_event *ev = (struct iucv_event *)arg; | |
639 | struct iucv_connection *conn = ev->conn; | |
640 | iucv_MessageComplete *eib = (iucv_MessageComplete *)ev->data; | |
641 | struct netiucv_priv *privptr = NULL; | |
642 | /* Shut up, gcc! skb is always below 2G. */ | |
643 | __u32 single_flag = eib->ipmsgtag; | |
644 | __u32 txbytes = 0; | |
645 | __u32 txpackets = 0; | |
646 | __u32 stat_maxcq = 0; | |
647 | struct sk_buff *skb; | |
648 | unsigned long saveflags; | |
649 | ll_header header; | |
650 | ||
651 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); | |
652 | ||
653 | if (conn && conn->netdev && conn->netdev->priv) | |
654 | privptr = (struct netiucv_priv *)conn->netdev->priv; | |
655 | conn->prof.tx_pending--; | |
656 | if (single_flag) { | |
657 | if ((skb = skb_dequeue(&conn->commit_queue))) { | |
658 | atomic_dec(&skb->users); | |
659 | dev_kfree_skb_any(skb); | |
660 | if (privptr) { | |
661 | privptr->stats.tx_packets++; | |
662 | privptr->stats.tx_bytes += | |
663 | (skb->len - NETIUCV_HDRLEN | |
664 | - NETIUCV_HDRLEN); | |
665 | } | |
666 | } | |
667 | } | |
668 | conn->tx_buff->data = conn->tx_buff->tail = conn->tx_buff->head; | |
669 | conn->tx_buff->len = 0; | |
670 | spin_lock_irqsave(&conn->collect_lock, saveflags); | |
671 | while ((skb = skb_dequeue(&conn->collect_queue))) { | |
672 | header.next = conn->tx_buff->len + skb->len + NETIUCV_HDRLEN; | |
673 | memcpy(skb_put(conn->tx_buff, NETIUCV_HDRLEN), &header, | |
674 | NETIUCV_HDRLEN); | |
675 | memcpy(skb_put(conn->tx_buff, skb->len), skb->data, skb->len); | |
676 | txbytes += skb->len; | |
677 | txpackets++; | |
678 | stat_maxcq++; | |
679 | atomic_dec(&skb->users); | |
680 | dev_kfree_skb_any(skb); | |
681 | } | |
682 | if (conn->collect_len > conn->prof.maxmulti) | |
683 | conn->prof.maxmulti = conn->collect_len; | |
684 | conn->collect_len = 0; | |
685 | spin_unlock_irqrestore(&conn->collect_lock, saveflags); | |
686 | if (conn->tx_buff->len) { | |
687 | int rc; | |
688 | ||
689 | header.next = 0; | |
690 | memcpy(skb_put(conn->tx_buff, NETIUCV_HDRLEN), &header, | |
691 | NETIUCV_HDRLEN); | |
692 | ||
693 | conn->prof.send_stamp = xtime; | |
694 | rc = iucv_send(conn->pathid, NULL, 0, 0, 0, 0, | |
695 | conn->tx_buff->data, conn->tx_buff->len); | |
696 | conn->prof.doios_multi++; | |
697 | conn->prof.txlen += conn->tx_buff->len; | |
698 | conn->prof.tx_pending++; | |
699 | if (conn->prof.tx_pending > conn->prof.tx_max_pending) | |
700 | conn->prof.tx_max_pending = conn->prof.tx_pending; | |
701 | if (rc) { | |
702 | conn->prof.tx_pending--; | |
703 | fsm_newstate(fi, CONN_STATE_IDLE); | |
704 | if (privptr) | |
705 | privptr->stats.tx_errors += txpackets; | |
706 | PRINT_WARN("iucv_send returned %08x\n", rc); | |
707 | IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_send\n", rc); | |
708 | } else { | |
709 | if (privptr) { | |
710 | privptr->stats.tx_packets += txpackets; | |
711 | privptr->stats.tx_bytes += txbytes; | |
712 | } | |
713 | if (stat_maxcq > conn->prof.maxcqueue) | |
714 | conn->prof.maxcqueue = stat_maxcq; | |
715 | } | |
716 | } else | |
717 | fsm_newstate(fi, CONN_STATE_IDLE); | |
718 | } | |
719 | ||
720 | static void | |
721 | conn_action_connaccept(fsm_instance *fi, int event, void *arg) | |
722 | { | |
723 | struct iucv_event *ev = (struct iucv_event *)arg; | |
724 | struct iucv_connection *conn = ev->conn; | |
725 | iucv_ConnectionPending *eib = (iucv_ConnectionPending *)ev->data; | |
726 | struct net_device *netdev = conn->netdev; | |
727 | struct netiucv_priv *privptr = (struct netiucv_priv *)netdev->priv; | |
728 | int rc; | |
729 | __u16 msglimit; | |
730 | __u8 udata[16]; | |
731 | ||
732 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
733 | ||
734 | rc = iucv_accept(eib->ippathid, NETIUCV_QUEUELEN_DEFAULT, udata, 0, | |
735 | conn->handle, conn, NULL, &msglimit); | |
736 | if (rc) { | |
737 | PRINT_WARN("%s: IUCV accept failed with error %d\n", | |
738 | netdev->name, rc); | |
739 | IUCV_DBF_TEXT_(setup, 2, "rc %d from iucv_accept", rc); | |
740 | return; | |
741 | } | |
742 | fsm_newstate(fi, CONN_STATE_IDLE); | |
743 | conn->pathid = eib->ippathid; | |
744 | netdev->tx_queue_len = msglimit; | |
745 | fsm_event(privptr->fsm, DEV_EVENT_CONUP, netdev); | |
746 | } | |
747 | ||
748 | static void | |
749 | conn_action_connreject(fsm_instance *fi, int event, void *arg) | |
750 | { | |
751 | struct iucv_event *ev = (struct iucv_event *)arg; | |
752 | struct iucv_connection *conn = ev->conn; | |
753 | struct net_device *netdev = conn->netdev; | |
754 | iucv_ConnectionPending *eib = (iucv_ConnectionPending *)ev->data; | |
755 | __u8 udata[16]; | |
756 | ||
757 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
758 | ||
759 | iucv_sever(eib->ippathid, udata); | |
760 | if (eib->ippathid != conn->pathid) { | |
761 | PRINT_INFO("%s: IR Connection Pending; " | |
762 | "pathid %d does not match original pathid %d\n", | |
763 | netdev->name, eib->ippathid, conn->pathid); | |
764 | IUCV_DBF_TEXT_(data, 2, | |
765 | "connreject: IR pathid %d, conn. pathid %d\n", | |
766 | eib->ippathid, conn->pathid); | |
767 | iucv_sever(conn->pathid, udata); | |
768 | } | |
769 | } | |
770 | ||
771 | static void | |
772 | conn_action_connack(fsm_instance *fi, int event, void *arg) | |
773 | { | |
774 | struct iucv_event *ev = (struct iucv_event *)arg; | |
775 | struct iucv_connection *conn = ev->conn; | |
776 | iucv_ConnectionComplete *eib = (iucv_ConnectionComplete *)ev->data; | |
777 | struct net_device *netdev = conn->netdev; | |
778 | struct netiucv_priv *privptr = (struct netiucv_priv *)netdev->priv; | |
779 | ||
780 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
781 | ||
782 | fsm_deltimer(&conn->timer); | |
783 | fsm_newstate(fi, CONN_STATE_IDLE); | |
784 | if (eib->ippathid != conn->pathid) { | |
785 | PRINT_INFO("%s: IR Connection Complete; " | |
786 | "pathid %d does not match original pathid %d\n", | |
787 | netdev->name, eib->ippathid, conn->pathid); | |
788 | IUCV_DBF_TEXT_(data, 2, | |
789 | "connack: IR pathid %d, conn. pathid %d\n", | |
790 | eib->ippathid, conn->pathid); | |
791 | conn->pathid = eib->ippathid; | |
792 | } | |
793 | netdev->tx_queue_len = eib->ipmsglim; | |
794 | fsm_event(privptr->fsm, DEV_EVENT_CONUP, netdev); | |
795 | } | |
796 | ||
797 | static void | |
798 | conn_action_conntimsev(fsm_instance *fi, int event, void *arg) | |
799 | { | |
800 | struct iucv_connection *conn = (struct iucv_connection *)arg; | |
801 | __u8 udata[16]; | |
802 | ||
803 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
804 | ||
805 | fsm_deltimer(&conn->timer); | |
806 | iucv_sever(conn->pathid, udata); | |
807 | fsm_newstate(fi, CONN_STATE_STARTWAIT); | |
808 | } | |
809 | ||
810 | static void | |
811 | conn_action_connsever(fsm_instance *fi, int event, void *arg) | |
812 | { | |
813 | struct iucv_event *ev = (struct iucv_event *)arg; | |
814 | struct iucv_connection *conn = ev->conn; | |
815 | struct net_device *netdev = conn->netdev; | |
816 | struct netiucv_priv *privptr = (struct netiucv_priv *)netdev->priv; | |
817 | __u8 udata[16]; | |
818 | ||
819 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
820 | ||
821 | fsm_deltimer(&conn->timer); | |
822 | iucv_sever(conn->pathid, udata); | |
823 | PRINT_INFO("%s: Remote dropped connection\n", netdev->name); | |
824 | IUCV_DBF_TEXT(data, 2, | |
825 | "conn_action_connsever: Remote dropped connection\n"); | |
826 | fsm_newstate(fi, CONN_STATE_STARTWAIT); | |
827 | fsm_event(privptr->fsm, DEV_EVENT_CONDOWN, netdev); | |
828 | } | |
829 | ||
830 | static void | |
831 | conn_action_start(fsm_instance *fi, int event, void *arg) | |
832 | { | |
833 | struct iucv_event *ev = (struct iucv_event *)arg; | |
834 | struct iucv_connection *conn = ev->conn; | |
835 | __u16 msglimit; | |
836 | int rc; | |
837 | ||
838 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
839 | ||
840 | if (!conn->handle) { | |
841 | IUCV_DBF_TEXT(trace, 5, "calling iucv_register_program\n"); | |
842 | conn->handle = | |
843 | iucv_register_program(iucvMagic, conn->userid, | |
844 | netiucv_mask, | |
845 | &netiucv_ops, conn); | |
846 | fsm_newstate(fi, CONN_STATE_STARTWAIT); | |
847 | if (!conn->handle) { | |
848 | fsm_newstate(fi, CONN_STATE_REGERR); | |
849 | conn->handle = NULL; | |
850 | IUCV_DBF_TEXT(setup, 2, | |
851 | "NULL from iucv_register_program\n"); | |
852 | return; | |
853 | } | |
854 | ||
855 | PRINT_DEBUG("%s('%s'): registered successfully\n", | |
856 | conn->netdev->name, conn->userid); | |
857 | } | |
858 | ||
859 | PRINT_DEBUG("%s('%s'): connecting ...\n", | |
860 | conn->netdev->name, conn->userid); | |
861 | ||
862 | /* We must set the state before calling iucv_connect because the callback | |
863 | * handler could be called at any point after the connection request is | |
864 | * sent */ | |
865 | ||
866 | fsm_newstate(fi, CONN_STATE_SETUPWAIT); | |
867 | rc = iucv_connect(&(conn->pathid), NETIUCV_QUEUELEN_DEFAULT, iucvMagic, | |
868 | conn->userid, iucv_host, 0, NULL, &msglimit, | |
869 | conn->handle, conn); | |
870 | switch (rc) { | |
871 | case 0: | |
872 | conn->netdev->tx_queue_len = msglimit; | |
873 | fsm_addtimer(&conn->timer, NETIUCV_TIMEOUT_5SEC, | |
874 | CONN_EVENT_TIMER, conn); | |
875 | return; | |
876 | case 11: | |
877 | PRINT_INFO("%s: User %s is currently not available.\n", | |
878 | conn->netdev->name, | |
879 | netiucv_printname(conn->userid)); | |
880 | fsm_newstate(fi, CONN_STATE_STARTWAIT); | |
881 | return; | |
882 | case 12: | |
883 | PRINT_INFO("%s: User %s is currently not ready.\n", | |
884 | conn->netdev->name, | |
885 | netiucv_printname(conn->userid)); | |
886 | fsm_newstate(fi, CONN_STATE_STARTWAIT); | |
887 | return; | |
888 | case 13: | |
889 | PRINT_WARN("%s: Too many IUCV connections.\n", | |
890 | conn->netdev->name); | |
891 | fsm_newstate(fi, CONN_STATE_CONNERR); | |
892 | break; | |
893 | case 14: | |
894 | PRINT_WARN( | |
895 | "%s: User %s has too many IUCV connections.\n", | |
896 | conn->netdev->name, | |
897 | netiucv_printname(conn->userid)); | |
898 | fsm_newstate(fi, CONN_STATE_CONNERR); | |
899 | break; | |
900 | case 15: | |
901 | PRINT_WARN( | |
902 | "%s: No IUCV authorization in CP directory.\n", | |
903 | conn->netdev->name); | |
904 | fsm_newstate(fi, CONN_STATE_CONNERR); | |
905 | break; | |
906 | default: | |
907 | PRINT_WARN("%s: iucv_connect returned error %d\n", | |
908 | conn->netdev->name, rc); | |
909 | fsm_newstate(fi, CONN_STATE_CONNERR); | |
910 | break; | |
911 | } | |
912 | IUCV_DBF_TEXT_(setup, 5, "iucv_connect rc is %d\n", rc); | |
913 | IUCV_DBF_TEXT(trace, 5, "calling iucv_unregister_program\n"); | |
914 | iucv_unregister_program(conn->handle); | |
915 | conn->handle = NULL; | |
916 | } | |
917 | ||
918 | static void | |
919 | netiucv_purge_skb_queue(struct sk_buff_head *q) | |
920 | { | |
921 | struct sk_buff *skb; | |
922 | ||
923 | while ((skb = skb_dequeue(q))) { | |
924 | atomic_dec(&skb->users); | |
925 | dev_kfree_skb_any(skb); | |
926 | } | |
927 | } | |
928 | ||
929 | static void | |
930 | conn_action_stop(fsm_instance *fi, int event, void *arg) | |
931 | { | |
932 | struct iucv_event *ev = (struct iucv_event *)arg; | |
933 | struct iucv_connection *conn = ev->conn; | |
934 | struct net_device *netdev = conn->netdev; | |
935 | struct netiucv_priv *privptr = (struct netiucv_priv *)netdev->priv; | |
936 | ||
937 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
938 | ||
939 | fsm_deltimer(&conn->timer); | |
940 | fsm_newstate(fi, CONN_STATE_STOPPED); | |
941 | netiucv_purge_skb_queue(&conn->collect_queue); | |
942 | if (conn->handle) | |
943 | IUCV_DBF_TEXT(trace, 5, "calling iucv_unregister_program\n"); | |
944 | iucv_unregister_program(conn->handle); | |
945 | conn->handle = NULL; | |
946 | netiucv_purge_skb_queue(&conn->commit_queue); | |
947 | fsm_event(privptr->fsm, DEV_EVENT_CONDOWN, netdev); | |
948 | } | |
949 | ||
950 | static void | |
951 | conn_action_inval(fsm_instance *fi, int event, void *arg) | |
952 | { | |
953 | struct iucv_event *ev = (struct iucv_event *)arg; | |
954 | struct iucv_connection *conn = ev->conn; | |
955 | struct net_device *netdev = conn->netdev; | |
956 | ||
957 | PRINT_WARN("%s: Cannot connect without username\n", | |
958 | netdev->name); | |
959 | IUCV_DBF_TEXT(data, 2, "conn_action_inval called\n"); | |
960 | } | |
961 | ||
962 | static const fsm_node conn_fsm[] = { | |
963 | { CONN_STATE_INVALID, CONN_EVENT_START, conn_action_inval }, | |
964 | { CONN_STATE_STOPPED, CONN_EVENT_START, conn_action_start }, | |
965 | ||
966 | { CONN_STATE_STOPPED, CONN_EVENT_STOP, conn_action_stop }, | |
967 | { CONN_STATE_STARTWAIT, CONN_EVENT_STOP, conn_action_stop }, | |
968 | { CONN_STATE_SETUPWAIT, CONN_EVENT_STOP, conn_action_stop }, | |
969 | { CONN_STATE_IDLE, CONN_EVENT_STOP, conn_action_stop }, | |
970 | { CONN_STATE_TX, CONN_EVENT_STOP, conn_action_stop }, | |
971 | { CONN_STATE_REGERR, CONN_EVENT_STOP, conn_action_stop }, | |
972 | { CONN_STATE_CONNERR, CONN_EVENT_STOP, conn_action_stop }, | |
973 | ||
974 | { CONN_STATE_STOPPED, CONN_EVENT_CONN_REQ, conn_action_connreject }, | |
975 | { CONN_STATE_STARTWAIT, CONN_EVENT_CONN_REQ, conn_action_connaccept }, | |
976 | { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_REQ, conn_action_connaccept }, | |
977 | { CONN_STATE_IDLE, CONN_EVENT_CONN_REQ, conn_action_connreject }, | |
978 | { CONN_STATE_TX, CONN_EVENT_CONN_REQ, conn_action_connreject }, | |
979 | ||
980 | { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_ACK, conn_action_connack }, | |
981 | { CONN_STATE_SETUPWAIT, CONN_EVENT_TIMER, conn_action_conntimsev }, | |
982 | ||
983 | { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_REJ, conn_action_connsever }, | |
984 | { CONN_STATE_IDLE, CONN_EVENT_CONN_REJ, conn_action_connsever }, | |
985 | { CONN_STATE_TX, CONN_EVENT_CONN_REJ, conn_action_connsever }, | |
986 | ||
987 | { CONN_STATE_IDLE, CONN_EVENT_RX, conn_action_rx }, | |
988 | { CONN_STATE_TX, CONN_EVENT_RX, conn_action_rx }, | |
989 | ||
990 | { CONN_STATE_TX, CONN_EVENT_TXDONE, conn_action_txdone }, | |
991 | { CONN_STATE_IDLE, CONN_EVENT_TXDONE, conn_action_txdone }, | |
992 | }; | |
993 | ||
994 | static const int CONN_FSM_LEN = sizeof(conn_fsm) / sizeof(fsm_node); | |
995 | ||
996 | \f | |
997 | /** | |
998 | * Actions for interface - statemachine. | |
999 | *****************************************************************************/ | |
1000 | ||
1001 | /** | |
1002 | * Startup connection by sending CONN_EVENT_START to it. | |
1003 | * | |
1004 | * @param fi An instance of an interface statemachine. | |
1005 | * @param event The event, just happened. | |
1006 | * @param arg Generic pointer, casted from struct net_device * upon call. | |
1007 | */ | |
1008 | static void | |
1009 | dev_action_start(fsm_instance *fi, int event, void *arg) | |
1010 | { | |
1011 | struct net_device *dev = (struct net_device *)arg; | |
1012 | struct netiucv_priv *privptr = dev->priv; | |
1013 | struct iucv_event ev; | |
1014 | ||
1015 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1016 | ||
1017 | ev.conn = privptr->conn; | |
1018 | fsm_newstate(fi, DEV_STATE_STARTWAIT); | |
1019 | fsm_event(privptr->conn->fsm, CONN_EVENT_START, &ev); | |
1020 | } | |
1021 | ||
1022 | /** | |
1023 | * Shutdown connection by sending CONN_EVENT_STOP to it. | |
1024 | * | |
1025 | * @param fi An instance of an interface statemachine. | |
1026 | * @param event The event, just happened. | |
1027 | * @param arg Generic pointer, casted from struct net_device * upon call. | |
1028 | */ | |
1029 | static void | |
1030 | dev_action_stop(fsm_instance *fi, int event, void *arg) | |
1031 | { | |
1032 | struct net_device *dev = (struct net_device *)arg; | |
1033 | struct netiucv_priv *privptr = dev->priv; | |
1034 | struct iucv_event ev; | |
1035 | ||
1036 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1037 | ||
1038 | ev.conn = privptr->conn; | |
1039 | ||
1040 | fsm_newstate(fi, DEV_STATE_STOPWAIT); | |
1041 | fsm_event(privptr->conn->fsm, CONN_EVENT_STOP, &ev); | |
1042 | } | |
1043 | ||
1044 | /** | |
1045 | * Called from connection statemachine | |
1046 | * when a connection is up and running. | |
1047 | * | |
1048 | * @param fi An instance of an interface statemachine. | |
1049 | * @param event The event, just happened. | |
1050 | * @param arg Generic pointer, casted from struct net_device * upon call. | |
1051 | */ | |
1052 | static void | |
1053 | dev_action_connup(fsm_instance *fi, int event, void *arg) | |
1054 | { | |
1055 | struct net_device *dev = (struct net_device *)arg; | |
1056 | struct netiucv_priv *privptr = dev->priv; | |
1057 | ||
1058 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1059 | ||
1060 | switch (fsm_getstate(fi)) { | |
1061 | case DEV_STATE_STARTWAIT: | |
1062 | fsm_newstate(fi, DEV_STATE_RUNNING); | |
1063 | PRINT_INFO("%s: connected with remote side %s\n", | |
1064 | dev->name, privptr->conn->userid); | |
1065 | IUCV_DBF_TEXT(setup, 3, | |
1066 | "connection is up and running\n"); | |
1067 | break; | |
1068 | case DEV_STATE_STOPWAIT: | |
1069 | PRINT_INFO( | |
1070 | "%s: got connection UP event during shutdown!\n", | |
1071 | dev->name); | |
1072 | IUCV_DBF_TEXT(data, 2, | |
1073 | "dev_action_connup: in DEV_STATE_STOPWAIT\n"); | |
1074 | break; | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | /** | |
1079 | * Called from connection statemachine | |
1080 | * when a connection has been shutdown. | |
1081 | * | |
1082 | * @param fi An instance of an interface statemachine. | |
1083 | * @param event The event, just happened. | |
1084 | * @param arg Generic pointer, casted from struct net_device * upon call. | |
1085 | */ | |
1086 | static void | |
1087 | dev_action_conndown(fsm_instance *fi, int event, void *arg) | |
1088 | { | |
1089 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1090 | ||
1091 | switch (fsm_getstate(fi)) { | |
1092 | case DEV_STATE_RUNNING: | |
1093 | fsm_newstate(fi, DEV_STATE_STARTWAIT); | |
1094 | break; | |
1095 | case DEV_STATE_STOPWAIT: | |
1096 | fsm_newstate(fi, DEV_STATE_STOPPED); | |
1097 | IUCV_DBF_TEXT(setup, 3, "connection is down\n"); | |
1098 | break; | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | static const fsm_node dev_fsm[] = { | |
1103 | { DEV_STATE_STOPPED, DEV_EVENT_START, dev_action_start }, | |
1104 | ||
1105 | { DEV_STATE_STOPWAIT, DEV_EVENT_START, dev_action_start }, | |
1106 | { DEV_STATE_STOPWAIT, DEV_EVENT_CONDOWN, dev_action_conndown }, | |
1107 | ||
1108 | { DEV_STATE_STARTWAIT, DEV_EVENT_STOP, dev_action_stop }, | |
1109 | { DEV_STATE_STARTWAIT, DEV_EVENT_CONUP, dev_action_connup }, | |
1110 | ||
1111 | { DEV_STATE_RUNNING, DEV_EVENT_STOP, dev_action_stop }, | |
1112 | { DEV_STATE_RUNNING, DEV_EVENT_CONDOWN, dev_action_conndown }, | |
1113 | { DEV_STATE_RUNNING, DEV_EVENT_CONUP, fsm_action_nop }, | |
1114 | }; | |
1115 | ||
1116 | static const int DEV_FSM_LEN = sizeof(dev_fsm) / sizeof(fsm_node); | |
1117 | ||
1118 | /** | |
1119 | * Transmit a packet. | |
1120 | * This is a helper function for netiucv_tx(). | |
1121 | * | |
1122 | * @param conn Connection to be used for sending. | |
1123 | * @param skb Pointer to struct sk_buff of packet to send. | |
1124 | * The linklevel header has already been set up | |
1125 | * by netiucv_tx(). | |
1126 | * | |
1127 | * @return 0 on success, -ERRNO on failure. (Never fails.) | |
1128 | */ | |
1129 | static int | |
1130 | netiucv_transmit_skb(struct iucv_connection *conn, struct sk_buff *skb) { | |
1131 | unsigned long saveflags; | |
1132 | ll_header header; | |
1133 | int rc = 0; | |
1134 | ||
1135 | if (fsm_getstate(conn->fsm) != CONN_STATE_IDLE) { | |
1136 | int l = skb->len + NETIUCV_HDRLEN; | |
1137 | ||
1138 | spin_lock_irqsave(&conn->collect_lock, saveflags); | |
1139 | if (conn->collect_len + l > | |
1140 | (conn->max_buffsize - NETIUCV_HDRLEN)) { | |
1141 | rc = -EBUSY; | |
1142 | IUCV_DBF_TEXT(data, 2, | |
1143 | "EBUSY from netiucv_transmit_skb\n"); | |
1144 | } else { | |
1145 | atomic_inc(&skb->users); | |
1146 | skb_queue_tail(&conn->collect_queue, skb); | |
1147 | conn->collect_len += l; | |
1148 | } | |
1149 | spin_unlock_irqrestore(&conn->collect_lock, saveflags); | |
1150 | } else { | |
1151 | struct sk_buff *nskb = skb; | |
1152 | /** | |
1153 | * Copy the skb to a new allocated skb in lowmem only if the | |
1154 | * data is located above 2G in memory or tailroom is < 2. | |
1155 | */ | |
1156 | unsigned long hi = | |
1157 | ((unsigned long)(skb->tail + NETIUCV_HDRLEN)) >> 31; | |
1158 | int copied = 0; | |
1159 | if (hi || (skb_tailroom(skb) < 2)) { | |
1160 | nskb = alloc_skb(skb->len + NETIUCV_HDRLEN + | |
1161 | NETIUCV_HDRLEN, GFP_ATOMIC | GFP_DMA); | |
1162 | if (!nskb) { | |
1163 | PRINT_WARN("%s: Could not allocate tx_skb\n", | |
1164 | conn->netdev->name); | |
1165 | IUCV_DBF_TEXT(data, 2, "alloc_skb failed\n"); | |
1166 | rc = -ENOMEM; | |
1167 | return rc; | |
1168 | } else { | |
1169 | skb_reserve(nskb, NETIUCV_HDRLEN); | |
1170 | memcpy(skb_put(nskb, skb->len), | |
1171 | skb->data, skb->len); | |
1172 | } | |
1173 | copied = 1; | |
1174 | } | |
1175 | /** | |
1176 | * skb now is below 2G and has enough room. Add headers. | |
1177 | */ | |
1178 | header.next = nskb->len + NETIUCV_HDRLEN; | |
1179 | memcpy(skb_push(nskb, NETIUCV_HDRLEN), &header, NETIUCV_HDRLEN); | |
1180 | header.next = 0; | |
1181 | memcpy(skb_put(nskb, NETIUCV_HDRLEN), &header, NETIUCV_HDRLEN); | |
1182 | ||
1183 | fsm_newstate(conn->fsm, CONN_STATE_TX); | |
1184 | conn->prof.send_stamp = xtime; | |
1185 | ||
1186 | rc = iucv_send(conn->pathid, NULL, 0, 0, 1 /* single_flag */, | |
1187 | 0, nskb->data, nskb->len); | |
1188 | /* Shut up, gcc! nskb is always below 2G. */ | |
1189 | conn->prof.doios_single++; | |
1190 | conn->prof.txlen += skb->len; | |
1191 | conn->prof.tx_pending++; | |
1192 | if (conn->prof.tx_pending > conn->prof.tx_max_pending) | |
1193 | conn->prof.tx_max_pending = conn->prof.tx_pending; | |
1194 | if (rc) { | |
1195 | struct netiucv_priv *privptr; | |
1196 | fsm_newstate(conn->fsm, CONN_STATE_IDLE); | |
1197 | conn->prof.tx_pending--; | |
1198 | privptr = (struct netiucv_priv *)conn->netdev->priv; | |
1199 | if (privptr) | |
1200 | privptr->stats.tx_errors++; | |
1201 | if (copied) | |
1202 | dev_kfree_skb(nskb); | |
1203 | else { | |
1204 | /** | |
1205 | * Remove our headers. They get added | |
1206 | * again on retransmit. | |
1207 | */ | |
1208 | skb_pull(skb, NETIUCV_HDRLEN); | |
1209 | skb_trim(skb, skb->len - NETIUCV_HDRLEN); | |
1210 | } | |
1211 | PRINT_WARN("iucv_send returned %08x\n", rc); | |
1212 | IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_send\n", rc); | |
1213 | } else { | |
1214 | if (copied) | |
1215 | dev_kfree_skb(skb); | |
1216 | atomic_inc(&nskb->users); | |
1217 | skb_queue_tail(&conn->commit_queue, nskb); | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | return rc; | |
1222 | } | |
1223 | \f | |
1224 | /** | |
1225 | * Interface API for upper network layers | |
1226 | *****************************************************************************/ | |
1227 | ||
1228 | /** | |
1229 | * Open an interface. | |
1230 | * Called from generic network layer when ifconfig up is run. | |
1231 | * | |
1232 | * @param dev Pointer to interface struct. | |
1233 | * | |
1234 | * @return 0 on success, -ERRNO on failure. (Never fails.) | |
1235 | */ | |
1236 | static int | |
1237 | netiucv_open(struct net_device *dev) { | |
1238 | fsm_event(((struct netiucv_priv *)dev->priv)->fsm, DEV_EVENT_START,dev); | |
1239 | return 0; | |
1240 | } | |
1241 | ||
1242 | /** | |
1243 | * Close an interface. | |
1244 | * Called from generic network layer when ifconfig down is run. | |
1245 | * | |
1246 | * @param dev Pointer to interface struct. | |
1247 | * | |
1248 | * @return 0 on success, -ERRNO on failure. (Never fails.) | |
1249 | */ | |
1250 | static int | |
1251 | netiucv_close(struct net_device *dev) { | |
1252 | fsm_event(((struct netiucv_priv *)dev->priv)->fsm, DEV_EVENT_STOP, dev); | |
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | /** | |
1257 | * Start transmission of a packet. | |
1258 | * Called from generic network device layer. | |
1259 | * | |
1260 | * @param skb Pointer to buffer containing the packet. | |
1261 | * @param dev Pointer to interface struct. | |
1262 | * | |
1263 | * @return 0 if packet consumed, !0 if packet rejected. | |
1264 | * Note: If we return !0, then the packet is free'd by | |
1265 | * the generic network layer. | |
1266 | */ | |
1267 | static int netiucv_tx(struct sk_buff *skb, struct net_device *dev) | |
1268 | { | |
1269 | int rc = 0; | |
1270 | struct netiucv_priv *privptr = dev->priv; | |
1271 | ||
1272 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); | |
1273 | /** | |
1274 | * Some sanity checks ... | |
1275 | */ | |
1276 | if (skb == NULL) { | |
1277 | PRINT_WARN("%s: NULL sk_buff passed\n", dev->name); | |
1278 | IUCV_DBF_TEXT(data, 2, "netiucv_tx: skb is NULL\n"); | |
1279 | privptr->stats.tx_dropped++; | |
1280 | return 0; | |
1281 | } | |
1282 | if (skb_headroom(skb) < NETIUCV_HDRLEN) { | |
1283 | PRINT_WARN("%s: Got sk_buff with head room < %ld bytes\n", | |
1284 | dev->name, NETIUCV_HDRLEN); | |
1285 | IUCV_DBF_TEXT(data, 2, | |
1286 | "netiucv_tx: skb_headroom < NETIUCV_HDRLEN\n"); | |
1287 | dev_kfree_skb(skb); | |
1288 | privptr->stats.tx_dropped++; | |
1289 | return 0; | |
1290 | } | |
1291 | ||
1292 | /** | |
1293 | * If connection is not running, try to restart it | |
1294 | * and throw away packet. | |
1295 | */ | |
1296 | if (fsm_getstate(privptr->fsm) != DEV_STATE_RUNNING) { | |
1297 | fsm_event(privptr->fsm, DEV_EVENT_START, dev); | |
1298 | dev_kfree_skb(skb); | |
1299 | privptr->stats.tx_dropped++; | |
1300 | privptr->stats.tx_errors++; | |
1301 | privptr->stats.tx_carrier_errors++; | |
1302 | return 0; | |
1303 | } | |
1304 | ||
1305 | if (netiucv_test_and_set_busy(dev)) { | |
1306 | IUCV_DBF_TEXT(data, 2, "EBUSY from netiucv_tx\n"); | |
1307 | return -EBUSY; | |
1308 | } | |
1309 | dev->trans_start = jiffies; | |
1310 | if (netiucv_transmit_skb(privptr->conn, skb)) | |
1311 | rc = 1; | |
1312 | netiucv_clear_busy(dev); | |
1313 | return rc; | |
1314 | } | |
1315 | ||
1316 | /** | |
1317 | * Returns interface statistics of a device. | |
1318 | * | |
1319 | * @param dev Pointer to interface struct. | |
1320 | * | |
1321 | * @return Pointer to stats struct of this interface. | |
1322 | */ | |
1323 | static struct net_device_stats * | |
1324 | netiucv_stats (struct net_device * dev) | |
1325 | { | |
1326 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1327 | return &((struct netiucv_priv *)dev->priv)->stats; | |
1328 | } | |
1329 | ||
1330 | /** | |
1331 | * Sets MTU of an interface. | |
1332 | * | |
1333 | * @param dev Pointer to interface struct. | |
1334 | * @param new_mtu The new MTU to use for this interface. | |
1335 | * | |
1336 | * @return 0 on success, -EINVAL if MTU is out of valid range. | |
1337 | * (valid range is 576 .. NETIUCV_MTU_MAX). | |
1338 | */ | |
1339 | static int | |
1340 | netiucv_change_mtu (struct net_device * dev, int new_mtu) | |
1341 | { | |
1342 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1343 | if ((new_mtu < 576) || (new_mtu > NETIUCV_MTU_MAX)) { | |
1344 | IUCV_DBF_TEXT(setup, 2, "given MTU out of valid range\n"); | |
1345 | return -EINVAL; | |
1346 | } | |
1347 | dev->mtu = new_mtu; | |
1348 | return 0; | |
1349 | } | |
1350 | ||
1351 | /** | |
1352 | * attributes in sysfs | |
1353 | *****************************************************************************/ | |
1354 | ||
1355 | static ssize_t | |
3fd3c0a5 | 1356 | user_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1357 | { |
1358 | struct netiucv_priv *priv = dev->driver_data; | |
1359 | ||
1360 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1361 | return sprintf(buf, "%s\n", netiucv_printname(priv->conn->userid)); | |
1362 | } | |
1363 | ||
1364 | static ssize_t | |
3fd3c0a5 | 1365 | user_write (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
1366 | { |
1367 | struct netiucv_priv *priv = dev->driver_data; | |
1368 | struct net_device *ndev = priv->conn->netdev; | |
1369 | char *p; | |
1370 | char *tmp; | |
1371 | char username[10]; | |
1372 | int i; | |
1373 | ||
1374 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1375 | if (count>9) { | |
1376 | PRINT_WARN("netiucv: username too long (%d)!\n", (int)count); | |
1377 | IUCV_DBF_TEXT_(setup, 2, | |
1378 | "%d is length of username\n", (int)count); | |
1379 | return -EINVAL; | |
1380 | } | |
1381 | ||
1382 | tmp = strsep((char **) &buf, "\n"); | |
1383 | for (i=0, p=tmp; i<8 && *p; i++, p++) { | |
1384 | if (isalnum(*p) || (*p == '$')) | |
1385 | username[i]= *p; | |
1386 | else if (*p == '\n') { | |
1387 | /* trailing lf, grr */ | |
1388 | break; | |
1389 | } else { | |
1390 | PRINT_WARN("netiucv: Invalid char %c in username!\n", | |
1391 | *p); | |
1392 | IUCV_DBF_TEXT_(setup, 2, | |
1393 | "username: invalid character %c\n", | |
1394 | *p); | |
1395 | return -EINVAL; | |
1396 | } | |
1397 | } | |
1398 | while (i<9) | |
1399 | username[i++] = ' '; | |
1400 | username[9] = '\0'; | |
1401 | ||
1402 | if (memcmp(username, priv->conn->userid, 8)) { | |
1403 | /* username changed */ | |
1404 | if (ndev->flags & (IFF_UP | IFF_RUNNING)) { | |
1405 | PRINT_WARN( | |
1406 | "netiucv: device %s active, connected to %s\n", | |
1407 | dev->bus_id, priv->conn->userid); | |
1408 | PRINT_WARN("netiucv: user cannot be updated\n"); | |
1409 | IUCV_DBF_TEXT(setup, 2, "user_write: device active\n"); | |
1410 | return -EBUSY; | |
1411 | } | |
1412 | } | |
1413 | memcpy(priv->conn->userid, username, 9); | |
1414 | ||
1415 | return count; | |
1416 | ||
1417 | } | |
1418 | ||
1419 | static DEVICE_ATTR(user, 0644, user_show, user_write); | |
1420 | ||
1421 | static ssize_t | |
3fd3c0a5 | 1422 | buffer_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1423 | { |
1424 | struct netiucv_priv *priv = dev->driver_data; | |
1425 | ||
1426 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1427 | return sprintf(buf, "%d\n", priv->conn->max_buffsize); | |
1428 | } | |
1429 | ||
1430 | static ssize_t | |
3fd3c0a5 | 1431 | buffer_write (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
1432 | { |
1433 | struct netiucv_priv *priv = dev->driver_data; | |
1434 | struct net_device *ndev = priv->conn->netdev; | |
1435 | char *e; | |
1436 | int bs1; | |
1437 | ||
1438 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1439 | if (count >= 39) | |
1440 | return -EINVAL; | |
1441 | ||
1442 | bs1 = simple_strtoul(buf, &e, 0); | |
1443 | ||
1444 | if (e && (!isspace(*e))) { | |
1445 | PRINT_WARN("netiucv: Invalid character in buffer!\n"); | |
1446 | IUCV_DBF_TEXT_(setup, 2, "buffer_write: invalid char %c\n", *e); | |
1447 | return -EINVAL; | |
1448 | } | |
1449 | if (bs1 > NETIUCV_BUFSIZE_MAX) { | |
1450 | PRINT_WARN("netiucv: Given buffer size %d too large.\n", | |
1451 | bs1); | |
1452 | IUCV_DBF_TEXT_(setup, 2, | |
1453 | "buffer_write: buffer size %d too large\n", | |
1454 | bs1); | |
1455 | return -EINVAL; | |
1456 | } | |
1457 | if ((ndev->flags & IFF_RUNNING) && | |
1458 | (bs1 < (ndev->mtu + NETIUCV_HDRLEN + 2))) { | |
1459 | PRINT_WARN("netiucv: Given buffer size %d too small.\n", | |
1460 | bs1); | |
1461 | IUCV_DBF_TEXT_(setup, 2, | |
1462 | "buffer_write: buffer size %d too small\n", | |
1463 | bs1); | |
1464 | return -EINVAL; | |
1465 | } | |
1466 | if (bs1 < (576 + NETIUCV_HDRLEN + NETIUCV_HDRLEN)) { | |
1467 | PRINT_WARN("netiucv: Given buffer size %d too small.\n", | |
1468 | bs1); | |
1469 | IUCV_DBF_TEXT_(setup, 2, | |
1470 | "buffer_write: buffer size %d too small\n", | |
1471 | bs1); | |
1472 | return -EINVAL; | |
1473 | } | |
1474 | ||
1475 | priv->conn->max_buffsize = bs1; | |
1476 | if (!(ndev->flags & IFF_RUNNING)) | |
1477 | ndev->mtu = bs1 - NETIUCV_HDRLEN - NETIUCV_HDRLEN; | |
1478 | ||
1479 | return count; | |
1480 | ||
1481 | } | |
1482 | ||
1483 | static DEVICE_ATTR(buffer, 0644, buffer_show, buffer_write); | |
1484 | ||
1485 | static ssize_t | |
3fd3c0a5 | 1486 | dev_fsm_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1487 | { |
1488 | struct netiucv_priv *priv = dev->driver_data; | |
1489 | ||
1490 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1491 | return sprintf(buf, "%s\n", fsm_getstate_str(priv->fsm)); | |
1492 | } | |
1493 | ||
1494 | static DEVICE_ATTR(device_fsm_state, 0444, dev_fsm_show, NULL); | |
1495 | ||
1496 | static ssize_t | |
3fd3c0a5 | 1497 | conn_fsm_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1498 | { |
1499 | struct netiucv_priv *priv = dev->driver_data; | |
1500 | ||
1501 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1502 | return sprintf(buf, "%s\n", fsm_getstate_str(priv->conn->fsm)); | |
1503 | } | |
1504 | ||
1505 | static DEVICE_ATTR(connection_fsm_state, 0444, conn_fsm_show, NULL); | |
1506 | ||
1507 | static ssize_t | |
3fd3c0a5 | 1508 | maxmulti_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1509 | { |
1510 | struct netiucv_priv *priv = dev->driver_data; | |
1511 | ||
1512 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1513 | return sprintf(buf, "%ld\n", priv->conn->prof.maxmulti); | |
1514 | } | |
1515 | ||
1516 | static ssize_t | |
3fd3c0a5 | 1517 | maxmulti_write (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
1518 | { |
1519 | struct netiucv_priv *priv = dev->driver_data; | |
1520 | ||
1521 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); | |
1522 | priv->conn->prof.maxmulti = 0; | |
1523 | return count; | |
1524 | } | |
1525 | ||
1526 | static DEVICE_ATTR(max_tx_buffer_used, 0644, maxmulti_show, maxmulti_write); | |
1527 | ||
1528 | static ssize_t | |
3fd3c0a5 | 1529 | maxcq_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1530 | { |
1531 | struct netiucv_priv *priv = dev->driver_data; | |
1532 | ||
1533 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1534 | return sprintf(buf, "%ld\n", priv->conn->prof.maxcqueue); | |
1535 | } | |
1536 | ||
1537 | static ssize_t | |
3fd3c0a5 | 1538 | maxcq_write (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
1539 | { |
1540 | struct netiucv_priv *priv = dev->driver_data; | |
1541 | ||
1542 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); | |
1543 | priv->conn->prof.maxcqueue = 0; | |
1544 | return count; | |
1545 | } | |
1546 | ||
1547 | static DEVICE_ATTR(max_chained_skbs, 0644, maxcq_show, maxcq_write); | |
1548 | ||
1549 | static ssize_t | |
3fd3c0a5 | 1550 | sdoio_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1551 | { |
1552 | struct netiucv_priv *priv = dev->driver_data; | |
1553 | ||
1554 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1555 | return sprintf(buf, "%ld\n", priv->conn->prof.doios_single); | |
1556 | } | |
1557 | ||
1558 | static ssize_t | |
3fd3c0a5 | 1559 | sdoio_write (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
1560 | { |
1561 | struct netiucv_priv *priv = dev->driver_data; | |
1562 | ||
1563 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); | |
1564 | priv->conn->prof.doios_single = 0; | |
1565 | return count; | |
1566 | } | |
1567 | ||
1568 | static DEVICE_ATTR(tx_single_write_ops, 0644, sdoio_show, sdoio_write); | |
1569 | ||
1570 | static ssize_t | |
3fd3c0a5 | 1571 | mdoio_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1572 | { |
1573 | struct netiucv_priv *priv = dev->driver_data; | |
1574 | ||
1575 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1576 | return sprintf(buf, "%ld\n", priv->conn->prof.doios_multi); | |
1577 | } | |
1578 | ||
1579 | static ssize_t | |
3fd3c0a5 | 1580 | mdoio_write (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
1581 | { |
1582 | struct netiucv_priv *priv = dev->driver_data; | |
1583 | ||
1584 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1585 | priv->conn->prof.doios_multi = 0; | |
1586 | return count; | |
1587 | } | |
1588 | ||
1589 | static DEVICE_ATTR(tx_multi_write_ops, 0644, mdoio_show, mdoio_write); | |
1590 | ||
1591 | static ssize_t | |
3fd3c0a5 | 1592 | txlen_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1593 | { |
1594 | struct netiucv_priv *priv = dev->driver_data; | |
1595 | ||
1596 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1597 | return sprintf(buf, "%ld\n", priv->conn->prof.txlen); | |
1598 | } | |
1599 | ||
1600 | static ssize_t | |
3fd3c0a5 | 1601 | txlen_write (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
1602 | { |
1603 | struct netiucv_priv *priv = dev->driver_data; | |
1604 | ||
1605 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); | |
1606 | priv->conn->prof.txlen = 0; | |
1607 | return count; | |
1608 | } | |
1609 | ||
1610 | static DEVICE_ATTR(netto_bytes, 0644, txlen_show, txlen_write); | |
1611 | ||
1612 | static ssize_t | |
3fd3c0a5 | 1613 | txtime_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1614 | { |
1615 | struct netiucv_priv *priv = dev->driver_data; | |
1616 | ||
1617 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1618 | return sprintf(buf, "%ld\n", priv->conn->prof.tx_time); | |
1619 | } | |
1620 | ||
1621 | static ssize_t | |
3fd3c0a5 | 1622 | txtime_write (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
1623 | { |
1624 | struct netiucv_priv *priv = dev->driver_data; | |
1625 | ||
1626 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); | |
1627 | priv->conn->prof.tx_time = 0; | |
1628 | return count; | |
1629 | } | |
1630 | ||
1631 | static DEVICE_ATTR(max_tx_io_time, 0644, txtime_show, txtime_write); | |
1632 | ||
1633 | static ssize_t | |
3fd3c0a5 | 1634 | txpend_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1635 | { |
1636 | struct netiucv_priv *priv = dev->driver_data; | |
1637 | ||
1638 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1639 | return sprintf(buf, "%ld\n", priv->conn->prof.tx_pending); | |
1640 | } | |
1641 | ||
1642 | static ssize_t | |
3fd3c0a5 | 1643 | txpend_write (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
1644 | { |
1645 | struct netiucv_priv *priv = dev->driver_data; | |
1646 | ||
1647 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); | |
1648 | priv->conn->prof.tx_pending = 0; | |
1649 | return count; | |
1650 | } | |
1651 | ||
1652 | static DEVICE_ATTR(tx_pending, 0644, txpend_show, txpend_write); | |
1653 | ||
1654 | static ssize_t | |
3fd3c0a5 | 1655 | txmpnd_show (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
1656 | { |
1657 | struct netiucv_priv *priv = dev->driver_data; | |
1658 | ||
1659 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); | |
1660 | return sprintf(buf, "%ld\n", priv->conn->prof.tx_max_pending); | |
1661 | } | |
1662 | ||
1663 | static ssize_t | |
3fd3c0a5 | 1664 | txmpnd_write (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
1665 | { |
1666 | struct netiucv_priv *priv = dev->driver_data; | |
1667 | ||
1668 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); | |
1669 | priv->conn->prof.tx_max_pending = 0; | |
1670 | return count; | |
1671 | } | |
1672 | ||
1673 | static DEVICE_ATTR(tx_max_pending, 0644, txmpnd_show, txmpnd_write); | |
1674 | ||
1675 | static struct attribute *netiucv_attrs[] = { | |
1676 | &dev_attr_buffer.attr, | |
1677 | &dev_attr_user.attr, | |
1678 | NULL, | |
1679 | }; | |
1680 | ||
1681 | static struct attribute_group netiucv_attr_group = { | |
1682 | .attrs = netiucv_attrs, | |
1683 | }; | |
1684 | ||
1685 | static struct attribute *netiucv_stat_attrs[] = { | |
1686 | &dev_attr_device_fsm_state.attr, | |
1687 | &dev_attr_connection_fsm_state.attr, | |
1688 | &dev_attr_max_tx_buffer_used.attr, | |
1689 | &dev_attr_max_chained_skbs.attr, | |
1690 | &dev_attr_tx_single_write_ops.attr, | |
1691 | &dev_attr_tx_multi_write_ops.attr, | |
1692 | &dev_attr_netto_bytes.attr, | |
1693 | &dev_attr_max_tx_io_time.attr, | |
1694 | &dev_attr_tx_pending.attr, | |
1695 | &dev_attr_tx_max_pending.attr, | |
1696 | NULL, | |
1697 | }; | |
1698 | ||
1699 | static struct attribute_group netiucv_stat_attr_group = { | |
1700 | .name = "stats", | |
1701 | .attrs = netiucv_stat_attrs, | |
1702 | }; | |
1703 | ||
1704 | static inline int | |
1705 | netiucv_add_files(struct device *dev) | |
1706 | { | |
1707 | int ret; | |
1708 | ||
1709 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1710 | ret = sysfs_create_group(&dev->kobj, &netiucv_attr_group); | |
1711 | if (ret) | |
1712 | return ret; | |
1713 | ret = sysfs_create_group(&dev->kobj, &netiucv_stat_attr_group); | |
1714 | if (ret) | |
1715 | sysfs_remove_group(&dev->kobj, &netiucv_attr_group); | |
1716 | return ret; | |
1717 | } | |
1718 | ||
1719 | static inline void | |
1720 | netiucv_remove_files(struct device *dev) | |
1721 | { | |
1722 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1723 | sysfs_remove_group(&dev->kobj, &netiucv_stat_attr_group); | |
1724 | sysfs_remove_group(&dev->kobj, &netiucv_attr_group); | |
1725 | } | |
1726 | ||
1727 | static int | |
1728 | netiucv_register_device(struct net_device *ndev) | |
1729 | { | |
1730 | struct netiucv_priv *priv = ndev->priv; | |
1731 | struct device *dev = kmalloc(sizeof(struct device), GFP_KERNEL); | |
1732 | int ret; | |
1733 | ||
1734 | ||
1735 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1736 | ||
1737 | if (dev) { | |
1738 | memset(dev, 0, sizeof(struct device)); | |
1739 | snprintf(dev->bus_id, BUS_ID_SIZE, "net%s", ndev->name); | |
1740 | dev->bus = &iucv_bus; | |
1741 | dev->parent = iucv_root; | |
1742 | /* | |
1743 | * The release function could be called after the | |
1744 | * module has been unloaded. It's _only_ task is to | |
1745 | * free the struct. Therefore, we specify kfree() | |
1746 | * directly here. (Probably a little bit obfuscating | |
1747 | * but legitime ...). | |
1748 | */ | |
1749 | dev->release = (void (*)(struct device *))kfree; | |
1750 | dev->driver = &netiucv_driver; | |
1751 | } else | |
1752 | return -ENOMEM; | |
1753 | ||
1754 | ret = device_register(dev); | |
1755 | ||
1756 | if (ret) | |
1757 | return ret; | |
1758 | ret = netiucv_add_files(dev); | |
1759 | if (ret) | |
1760 | goto out_unreg; | |
1761 | priv->dev = dev; | |
1762 | dev->driver_data = priv; | |
1763 | return 0; | |
1764 | ||
1765 | out_unreg: | |
1766 | device_unregister(dev); | |
1767 | return ret; | |
1768 | } | |
1769 | ||
1770 | static void | |
1771 | netiucv_unregister_device(struct device *dev) | |
1772 | { | |
1773 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1774 | netiucv_remove_files(dev); | |
1775 | device_unregister(dev); | |
1776 | } | |
1777 | ||
1778 | /** | |
1779 | * Allocate and initialize a new connection structure. | |
1780 | * Add it to the list of netiucv connections; | |
1781 | */ | |
1782 | static struct iucv_connection * | |
1783 | netiucv_new_connection(struct net_device *dev, char *username) | |
1784 | { | |
1785 | struct iucv_connection **clist = &iucv_connections; | |
1786 | struct iucv_connection *conn = | |
1787 | (struct iucv_connection *) | |
1788 | kmalloc(sizeof(struct iucv_connection), GFP_KERNEL); | |
1789 | ||
1790 | if (conn) { | |
1791 | memset(conn, 0, sizeof(struct iucv_connection)); | |
1792 | skb_queue_head_init(&conn->collect_queue); | |
1793 | skb_queue_head_init(&conn->commit_queue); | |
1794 | conn->max_buffsize = NETIUCV_BUFSIZE_DEFAULT; | |
1795 | conn->netdev = dev; | |
1796 | ||
1797 | conn->rx_buff = alloc_skb(NETIUCV_BUFSIZE_DEFAULT, | |
1798 | GFP_KERNEL | GFP_DMA); | |
1799 | if (!conn->rx_buff) { | |
1800 | kfree(conn); | |
1801 | return NULL; | |
1802 | } | |
1803 | conn->tx_buff = alloc_skb(NETIUCV_BUFSIZE_DEFAULT, | |
1804 | GFP_KERNEL | GFP_DMA); | |
1805 | if (!conn->tx_buff) { | |
1806 | kfree_skb(conn->rx_buff); | |
1807 | kfree(conn); | |
1808 | return NULL; | |
1809 | } | |
1810 | conn->fsm = init_fsm("netiucvconn", conn_state_names, | |
1811 | conn_event_names, NR_CONN_STATES, | |
1812 | NR_CONN_EVENTS, conn_fsm, CONN_FSM_LEN, | |
1813 | GFP_KERNEL); | |
1814 | if (!conn->fsm) { | |
1815 | kfree_skb(conn->tx_buff); | |
1816 | kfree_skb(conn->rx_buff); | |
1817 | kfree(conn); | |
1818 | return NULL; | |
1819 | } | |
1820 | fsm_settimer(conn->fsm, &conn->timer); | |
1821 | fsm_newstate(conn->fsm, CONN_STATE_INVALID); | |
1822 | ||
1823 | if (username) { | |
1824 | memcpy(conn->userid, username, 9); | |
1825 | fsm_newstate(conn->fsm, CONN_STATE_STOPPED); | |
1826 | } | |
1827 | ||
1828 | conn->next = *clist; | |
1829 | *clist = conn; | |
1830 | } | |
1831 | return conn; | |
1832 | } | |
1833 | ||
1834 | /** | |
1835 | * Release a connection structure and remove it from the | |
1836 | * list of netiucv connections. | |
1837 | */ | |
1838 | static void | |
1839 | netiucv_remove_connection(struct iucv_connection *conn) | |
1840 | { | |
1841 | struct iucv_connection **clist = &iucv_connections; | |
1842 | ||
1843 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1844 | if (conn == NULL) | |
1845 | return; | |
1846 | while (*clist) { | |
1847 | if (*clist == conn) { | |
1848 | *clist = conn->next; | |
1849 | if (conn->handle) { | |
1850 | iucv_unregister_program(conn->handle); | |
1851 | conn->handle = NULL; | |
1852 | } | |
1853 | fsm_deltimer(&conn->timer); | |
1854 | kfree_fsm(conn->fsm); | |
1855 | kfree_skb(conn->rx_buff); | |
1856 | kfree_skb(conn->tx_buff); | |
1857 | return; | |
1858 | } | |
1859 | clist = &((*clist)->next); | |
1860 | } | |
1861 | } | |
1862 | ||
1863 | /** | |
1864 | * Release everything of a net device. | |
1865 | */ | |
1866 | static void | |
1867 | netiucv_free_netdevice(struct net_device *dev) | |
1868 | { | |
1869 | struct netiucv_priv *privptr; | |
1870 | ||
1871 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1872 | ||
1873 | if (!dev) | |
1874 | return; | |
1875 | ||
1876 | privptr = (struct netiucv_priv *)dev->priv; | |
1877 | if (privptr) { | |
1878 | if (privptr->conn) | |
1879 | netiucv_remove_connection(privptr->conn); | |
1880 | if (privptr->fsm) | |
1881 | kfree_fsm(privptr->fsm); | |
1882 | privptr->conn = NULL; privptr->fsm = NULL; | |
1883 | /* privptr gets freed by free_netdev() */ | |
1884 | } | |
1885 | free_netdev(dev); | |
1886 | } | |
1887 | ||
1888 | /** | |
1889 | * Initialize a net device. (Called from kernel in alloc_netdev()) | |
1890 | */ | |
1891 | static void | |
1892 | netiucv_setup_netdevice(struct net_device *dev) | |
1893 | { | |
1894 | memset(dev->priv, 0, sizeof(struct netiucv_priv)); | |
1895 | ||
1896 | dev->mtu = NETIUCV_MTU_DEFAULT; | |
1897 | dev->hard_start_xmit = netiucv_tx; | |
1898 | dev->open = netiucv_open; | |
1899 | dev->stop = netiucv_close; | |
1900 | dev->get_stats = netiucv_stats; | |
1901 | dev->change_mtu = netiucv_change_mtu; | |
1902 | dev->destructor = netiucv_free_netdevice; | |
1903 | dev->hard_header_len = NETIUCV_HDRLEN; | |
1904 | dev->addr_len = 0; | |
1905 | dev->type = ARPHRD_SLIP; | |
1906 | dev->tx_queue_len = NETIUCV_QUEUELEN_DEFAULT; | |
1907 | dev->flags = IFF_POINTOPOINT | IFF_NOARP; | |
1908 | SET_MODULE_OWNER(dev); | |
1909 | } | |
1910 | ||
1911 | /** | |
1912 | * Allocate and initialize everything of a net device. | |
1913 | */ | |
1914 | static struct net_device * | |
1915 | netiucv_init_netdevice(char *username) | |
1916 | { | |
1917 | struct netiucv_priv *privptr; | |
1918 | struct net_device *dev; | |
1919 | ||
1920 | dev = alloc_netdev(sizeof(struct netiucv_priv), "iucv%d", | |
1921 | netiucv_setup_netdevice); | |
1922 | if (!dev) | |
1923 | return NULL; | |
1924 | if (dev_alloc_name(dev, dev->name) < 0) { | |
1925 | free_netdev(dev); | |
1926 | return NULL; | |
1927 | } | |
1928 | ||
1929 | privptr = (struct netiucv_priv *)dev->priv; | |
1930 | privptr->fsm = init_fsm("netiucvdev", dev_state_names, | |
1931 | dev_event_names, NR_DEV_STATES, NR_DEV_EVENTS, | |
1932 | dev_fsm, DEV_FSM_LEN, GFP_KERNEL); | |
1933 | if (!privptr->fsm) { | |
1934 | free_netdev(dev); | |
1935 | return NULL; | |
1936 | } | |
1937 | privptr->conn = netiucv_new_connection(dev, username); | |
1938 | if (!privptr->conn) { | |
1939 | kfree_fsm(privptr->fsm); | |
1940 | free_netdev(dev); | |
1941 | IUCV_DBF_TEXT(setup, 2, "NULL from netiucv_new_connection\n"); | |
1942 | return NULL; | |
1943 | } | |
1944 | fsm_newstate(privptr->fsm, DEV_STATE_STOPPED); | |
1945 | ||
1946 | return dev; | |
1947 | } | |
1948 | ||
1949 | static ssize_t | |
1950 | conn_write(struct device_driver *drv, const char *buf, size_t count) | |
1951 | { | |
1952 | char *p; | |
1953 | char username[10]; | |
1954 | int i, ret; | |
1955 | struct net_device *dev; | |
1956 | ||
1957 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
1958 | if (count>9) { | |
1959 | PRINT_WARN("netiucv: username too long (%d)!\n", (int)count); | |
1960 | IUCV_DBF_TEXT(setup, 2, "conn_write: too long\n"); | |
1961 | return -EINVAL; | |
1962 | } | |
1963 | ||
1964 | for (i=0, p=(char *)buf; i<8 && *p; i++, p++) { | |
1965 | if (isalnum(*p) || (*p == '$')) | |
1966 | username[i]= *p; | |
1967 | else if (*p == '\n') { | |
1968 | /* trailing lf, grr */ | |
1969 | break; | |
1970 | } else { | |
1971 | PRINT_WARN("netiucv: Invalid character in username!\n"); | |
1972 | IUCV_DBF_TEXT_(setup, 2, | |
1973 | "conn_write: invalid character %c\n", *p); | |
1974 | return -EINVAL; | |
1975 | } | |
1976 | } | |
1977 | while (i<9) | |
1978 | username[i++] = ' '; | |
1979 | username[9] = '\0'; | |
1980 | dev = netiucv_init_netdevice(username); | |
1981 | if (!dev) { | |
1982 | PRINT_WARN( | |
1983 | "netiucv: Could not allocate network device structure " | |
1984 | "for user '%s'\n", netiucv_printname(username)); | |
1985 | IUCV_DBF_TEXT(setup, 2, "NULL from netiucv_init_netdevice\n"); | |
1986 | return -ENODEV; | |
1987 | } | |
1988 | ||
1989 | if ((ret = netiucv_register_device(dev))) { | |
1990 | IUCV_DBF_TEXT_(setup, 2, | |
1991 | "ret %d from netiucv_register_device\n", ret); | |
1992 | goto out_free_ndev; | |
1993 | } | |
1994 | ||
1995 | /* sysfs magic */ | |
1996 | SET_NETDEV_DEV(dev, | |
1997 | (struct device*)((struct netiucv_priv*)dev->priv)->dev); | |
1998 | ||
1999 | if ((ret = register_netdev(dev))) { | |
2000 | netiucv_unregister_device((struct device*) | |
2001 | ((struct netiucv_priv*)dev->priv)->dev); | |
2002 | goto out_free_ndev; | |
2003 | } | |
2004 | ||
2005 | PRINT_INFO("%s: '%s'\n", dev->name, netiucv_printname(username)); | |
2006 | ||
2007 | return count; | |
2008 | ||
2009 | out_free_ndev: | |
2010 | PRINT_WARN("netiucv: Could not register '%s'\n", dev->name); | |
2011 | IUCV_DBF_TEXT(setup, 2, "conn_write: could not register\n"); | |
2012 | netiucv_free_netdevice(dev); | |
2013 | return ret; | |
2014 | } | |
2015 | ||
2016 | DRIVER_ATTR(connection, 0200, NULL, conn_write); | |
2017 | ||
2018 | static ssize_t | |
2019 | remove_write (struct device_driver *drv, const char *buf, size_t count) | |
2020 | { | |
2021 | struct iucv_connection **clist = &iucv_connections; | |
2022 | struct net_device *ndev; | |
2023 | struct netiucv_priv *priv; | |
2024 | struct device *dev; | |
2025 | char name[IFNAMSIZ]; | |
2026 | char *p; | |
2027 | int i; | |
2028 | ||
2029 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
2030 | ||
2031 | if (count >= IFNAMSIZ) | |
2032 | count = IFNAMSIZ-1; | |
2033 | ||
2034 | for (i=0, p=(char *)buf; i<count && *p; i++, p++) { | |
2035 | if ((*p == '\n') | (*p == ' ')) { | |
2036 | /* trailing lf, grr */ | |
2037 | break; | |
2038 | } else { | |
2039 | name[i]=*p; | |
2040 | } | |
2041 | } | |
2042 | name[i] = '\0'; | |
2043 | ||
2044 | while (*clist) { | |
2045 | ndev = (*clist)->netdev; | |
2046 | priv = (struct netiucv_priv*)ndev->priv; | |
2047 | dev = priv->dev; | |
2048 | ||
2049 | if (strncmp(name, ndev->name, count)) { | |
2050 | clist = &((*clist)->next); | |
2051 | continue; | |
2052 | } | |
2053 | if (ndev->flags & (IFF_UP | IFF_RUNNING)) { | |
2054 | PRINT_WARN( | |
2055 | "netiucv: net device %s active with peer %s\n", | |
2056 | ndev->name, priv->conn->userid); | |
2057 | PRINT_WARN("netiucv: %s cannot be removed\n", | |
2058 | ndev->name); | |
2059 | IUCV_DBF_TEXT(data, 2, "remove_write: still active\n"); | |
2060 | return -EBUSY; | |
2061 | } | |
2062 | unregister_netdev(ndev); | |
2063 | netiucv_unregister_device(dev); | |
2064 | return count; | |
2065 | } | |
2066 | PRINT_WARN("netiucv: net device %s unknown\n", name); | |
2067 | IUCV_DBF_TEXT(data, 2, "remove_write: unknown device\n"); | |
2068 | return -EINVAL; | |
2069 | } | |
2070 | ||
2071 | DRIVER_ATTR(remove, 0200, NULL, remove_write); | |
2072 | ||
2073 | static void | |
2074 | netiucv_banner(void) | |
2075 | { | |
e018ba1f | 2076 | PRINT_INFO("NETIUCV driver initialized\n"); |
1da177e4 LT |
2077 | } |
2078 | ||
2079 | static void __exit | |
2080 | netiucv_exit(void) | |
2081 | { | |
2082 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
2083 | while (iucv_connections) { | |
2084 | struct net_device *ndev = iucv_connections->netdev; | |
2085 | struct netiucv_priv *priv = (struct netiucv_priv*)ndev->priv; | |
2086 | struct device *dev = priv->dev; | |
2087 | ||
2088 | unregister_netdev(ndev); | |
2089 | netiucv_unregister_device(dev); | |
2090 | } | |
2091 | ||
2092 | driver_remove_file(&netiucv_driver, &driver_attr_connection); | |
2093 | driver_remove_file(&netiucv_driver, &driver_attr_remove); | |
2094 | driver_unregister(&netiucv_driver); | |
2095 | iucv_unregister_dbf_views(); | |
2096 | ||
2097 | PRINT_INFO("NETIUCV driver unloaded\n"); | |
2098 | return; | |
2099 | } | |
2100 | ||
2101 | static int __init | |
2102 | netiucv_init(void) | |
2103 | { | |
2104 | int ret; | |
2105 | ||
2106 | ret = iucv_register_dbf_views(); | |
2107 | if (ret) { | |
2108 | PRINT_WARN("netiucv_init failed, " | |
2109 | "iucv_register_dbf_views rc = %d\n", ret); | |
2110 | return ret; | |
2111 | } | |
2112 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); | |
2113 | ret = driver_register(&netiucv_driver); | |
2114 | if (ret) { | |
2115 | PRINT_ERR("NETIUCV: failed to register driver.\n"); | |
2116 | IUCV_DBF_TEXT_(setup, 2, "ret %d from driver_register\n", ret); | |
2117 | iucv_unregister_dbf_views(); | |
2118 | return ret; | |
2119 | } | |
2120 | ||
2121 | /* Add entry for specifying connections. */ | |
2122 | ret = driver_create_file(&netiucv_driver, &driver_attr_connection); | |
2123 | if (!ret) { | |
2124 | ret = driver_create_file(&netiucv_driver, &driver_attr_remove); | |
2125 | netiucv_banner(); | |
2126 | } else { | |
2127 | PRINT_ERR("NETIUCV: failed to add driver attribute.\n"); | |
2128 | IUCV_DBF_TEXT_(setup, 2, "ret %d from driver_create_file\n", ret); | |
2129 | driver_unregister(&netiucv_driver); | |
2130 | iucv_unregister_dbf_views(); | |
2131 | } | |
2132 | return ret; | |
2133 | } | |
2134 | ||
2135 | module_init(netiucv_init); | |
2136 | module_exit(netiucv_exit); | |
2137 | MODULE_LICENSE("GPL"); |