?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
spi-topcliff-pch: supports a spi mode setup and bit order setup by IO control
[zen-stable.git] / drivers / s390 / net / qeth_l2_main.c
blobc1296713311404469026efc04e6e34081d812552
1 /*
2 * drivers/s390/net/qeth_l2_main.c
3 *
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/slab.h>
20 #include <linux/etherdevice.h>
21 #include <linux/mii.h>
22 #include <linux/ip.h>
23 #include <linux/list.h>
24
25 #include "qeth_core.h"
26
27 static int qeth_l2_set_offline(struct ccwgroup_device *);
28 static int qeth_l2_stop(struct net_device *);
29 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
30 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
31 enum qeth_ipa_cmds,
32 int (*reply_cb) (struct qeth_card *,
33 struct qeth_reply*,
34 unsigned long));
35 static void qeth_l2_set_multicast_list(struct net_device *);
36 static int qeth_l2_recover(void *);
37
38 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
39 {
40 struct qeth_card *card = dev->ml_priv;
41 struct mii_ioctl_data *mii_data;
42 int rc = 0;
43
44 if (!card)
45 return -ENODEV;
46
47 if ((card->state != CARD_STATE_UP) &&
48 (card->state != CARD_STATE_SOFTSETUP))
49 return -ENODEV;
50
51 if (card->info.type == QETH_CARD_TYPE_OSN)
52 return -EPERM;
53
54 switch (cmd) {
55 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
56 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
57 break;
58 case SIOC_QETH_GET_CARD_TYPE:
59 if ((card->info.type == QETH_CARD_TYPE_OSD ||
60 card->info.type == QETH_CARD_TYPE_OSM ||
61 card->info.type == QETH_CARD_TYPE_OSX) &&
62 !card->info.guestlan)
63 return 1;
64 return 0;
65 break;
66 case SIOCGMIIPHY:
67 mii_data = if_mii(rq);
68 mii_data->phy_id = 0;
69 break;
70 case SIOCGMIIREG:
71 mii_data = if_mii(rq);
72 if (mii_data->phy_id != 0)
73 rc = -EINVAL;
74 else
75 mii_data->val_out = qeth_mdio_read(dev,
76 mii_data->phy_id, mii_data->reg_num);
77 break;
78 default:
79 rc = -EOPNOTSUPP;
80 }
81 if (rc)
82 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
83 return rc;
84 }
85
86 static int qeth_l2_verify_dev(struct net_device *dev)
87 {
88 struct qeth_card *card;
89 unsigned long flags;
90 int rc = 0;
91
92 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
93 list_for_each_entry(card, &qeth_core_card_list.list, list) {
94 if (card->dev == dev) {
95 rc = QETH_REAL_CARD;
96 break;
97 }
98 }
99 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
100
101 return rc;
102 }
103
104 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
105 {
106 struct qeth_card *card;
107 struct net_device *ndev;
108 __u16 temp_dev_no;
109 unsigned long flags;
110 struct ccw_dev_id read_devid;
111
112 ndev = NULL;
113 memcpy(&temp_dev_no, read_dev_no, 2);
114 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
115 list_for_each_entry(card, &qeth_core_card_list.list, list) {
116 ccw_device_get_id(CARD_RDEV(card), &read_devid);
117 if (read_devid.devno == temp_dev_no) {
118 ndev = card->dev;
119 break;
120 }
121 }
122 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
123 return ndev;
124 }
125
126 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
127 struct qeth_reply *reply,
128 unsigned long data)
129 {
130 struct qeth_ipa_cmd *cmd;
131 __u8 *mac;
132
133 QETH_CARD_TEXT(card, 2, "L2Sgmacb");
134 cmd = (struct qeth_ipa_cmd *) data;
135 mac = &cmd->data.setdelmac.mac[0];
136 /* MAC already registered, needed in couple/uncouple case */
137 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
138 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
139 mac, QETH_CARD_IFNAME(card));
140 cmd->hdr.return_code = 0;
141 }
142 if (cmd->hdr.return_code)
143 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
144 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
145 return 0;
146 }
147
148 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
149 {
150 QETH_CARD_TEXT(card, 2, "L2Sgmac");
151 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
152 qeth_l2_send_setgroupmac_cb);
153 }
154
155 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
156 struct qeth_reply *reply,
157 unsigned long data)
158 {
159 struct qeth_ipa_cmd *cmd;
160 __u8 *mac;
161
162 QETH_CARD_TEXT(card, 2, "L2Dgmacb");
163 cmd = (struct qeth_ipa_cmd *) data;
164 mac = &cmd->data.setdelmac.mac[0];
165 if (cmd->hdr.return_code)
166 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
167 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
168 return 0;
169 }
170
171 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
172 {
173 QETH_CARD_TEXT(card, 2, "L2Dgmac");
174 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
175 qeth_l2_send_delgroupmac_cb);
176 }
177
178 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
179 {
180 struct qeth_mc_mac *mc;
181 int rc;
182
183 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
184
185 if (!mc)
186 return;
187
188 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
189 mc->mc_addrlen = OSA_ADDR_LEN;
190 mc->is_vmac = vmac;
191
192 if (vmac) {
193 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
194 NULL);
195 } else {
196 rc = qeth_l2_send_setgroupmac(card, mac);
197 }
198
199 if (!rc)
200 list_add_tail(&mc->list, &card->mc_list);
201 else
202 kfree(mc);
203 }
204
205 static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
206 {
207 struct qeth_mc_mac *mc, *tmp;
208
209 spin_lock_bh(&card->mclock);
210 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
211 if (del) {
212 if (mc->is_vmac)
213 qeth_l2_send_setdelmac(card, mc->mc_addr,
214 IPA_CMD_DELVMAC, NULL);
215 else
216 qeth_l2_send_delgroupmac(card, mc->mc_addr);
217 }
218 list_del(&mc->list);
219 kfree(mc);
220 }
221 spin_unlock_bh(&card->mclock);
222 }
223
224 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
225 struct sk_buff *skb)
226 {
227 if (card->info.type == QETH_CARD_TYPE_OSN)
228 return RTN_UNSPEC;
229 if (is_broadcast_ether_addr(skb->data))
230 return RTN_BROADCAST;
231 if (is_multicast_ether_addr(skb->data))
232 return RTN_MULTICAST;
233 return RTN_UNSPEC;
234 }
235
236 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
237 struct sk_buff *skb, int ipv, int cast_type)
238 {
239 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
240
241 memset(hdr, 0, sizeof(struct qeth_hdr));
242 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
243
244 /* set byte byte 3 to casting flags */
245 if (cast_type == RTN_MULTICAST)
246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
247 else if (cast_type == RTN_BROADCAST)
248 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
249 else
250 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
251
252 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
253 /* VSWITCH relies on the VLAN
254 * information to be present in
255 * the QDIO header */
256 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
257 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
258 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
259 }
260 }
261
262 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
263 struct qeth_reply *reply, unsigned long data)
264 {
265 struct qeth_ipa_cmd *cmd;
266
267 QETH_CARD_TEXT(card, 2, "L2sdvcb");
268 cmd = (struct qeth_ipa_cmd *) data;
269 if (cmd->hdr.return_code) {
270 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
271 "Continuing\n", cmd->data.setdelvlan.vlan_id,
272 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
273 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
274 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
275 }
276 return 0;
277 }
278
279 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
280 enum qeth_ipa_cmds ipacmd)
281 {
282 struct qeth_ipa_cmd *cmd;
283 struct qeth_cmd_buffer *iob;
284
285 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
286 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
287 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
288 cmd->data.setdelvlan.vlan_id = i;
289 return qeth_send_ipa_cmd(card, iob,
290 qeth_l2_send_setdelvlan_cb, NULL);
291 }
292
293 static void qeth_l2_process_vlans(struct qeth_card *card)
294 {
295 struct qeth_vlan_vid *id;
296 QETH_CARD_TEXT(card, 3, "L2prcvln");
297 spin_lock_bh(&card->vlanlock);
298 list_for_each_entry(id, &card->vid_list, list) {
299 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
300 }
301 spin_unlock_bh(&card->vlanlock);
302 }
303
304 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
305 {
306 struct qeth_card *card = dev->ml_priv;
307 struct qeth_vlan_vid *id;
308
309 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
310 if (!vid)
311 return 0;
312 if (card->info.type == QETH_CARD_TYPE_OSM) {
313 QETH_CARD_TEXT(card, 3, "aidOSM");
314 return 0;
315 }
316 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
317 QETH_CARD_TEXT(card, 3, "aidREC");
318 return 0;
319 }
320 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
321 if (id) {
322 id->vid = vid;
323 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
324 spin_lock_bh(&card->vlanlock);
325 list_add_tail(&id->list, &card->vid_list);
326 spin_unlock_bh(&card->vlanlock);
327 } else {
328 return -ENOMEM;
329 }
330 return 0;
331 }
332
333 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
334 {
335 struct qeth_vlan_vid *id, *tmpid = NULL;
336 struct qeth_card *card = dev->ml_priv;
337
338 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
339 if (card->info.type == QETH_CARD_TYPE_OSM) {
340 QETH_CARD_TEXT(card, 3, "kidOSM");
341 return 0;
342 }
343 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
344 QETH_CARD_TEXT(card, 3, "kidREC");
345 return 0;
346 }
347 spin_lock_bh(&card->vlanlock);
348 list_for_each_entry(id, &card->vid_list, list) {
349 if (id->vid == vid) {
350 list_del(&id->list);
351 tmpid = id;
352 break;
353 }
354 }
355 spin_unlock_bh(&card->vlanlock);
356 if (tmpid) {
357 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
358 kfree(tmpid);
359 }
360 qeth_l2_set_multicast_list(card->dev);
361 return 0;
362 }
363
364 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
365 {
366 int rc = 0;
367
368 QETH_DBF_TEXT(SETUP , 2, "stopcard");
369 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
370
371 qeth_set_allowed_threads(card, 0, 1);
372 if (card->read.state == CH_STATE_UP &&
373 card->write.state == CH_STATE_UP &&
374 (card->state == CARD_STATE_UP)) {
375 if (recovery_mode &&
376 card->info.type != QETH_CARD_TYPE_OSN) {
377 qeth_l2_stop(card->dev);
378 } else {
379 rtnl_lock();
380 dev_close(card->dev);
381 rtnl_unlock();
382 }
383 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
384 card->state = CARD_STATE_SOFTSETUP;
385 }
386 if (card->state == CARD_STATE_SOFTSETUP) {
387 qeth_l2_del_all_mc(card, 0);
388 qeth_clear_ipacmd_list(card);
389 card->state = CARD_STATE_HARDSETUP;
390 }
391 if (card->state == CARD_STATE_HARDSETUP) {
392 qeth_qdio_clear_card(card, 0);
393 qeth_clear_qdio_buffers(card);
394 qeth_clear_working_pool_list(card);
395 card->state = CARD_STATE_DOWN;
396 }
397 if (card->state == CARD_STATE_DOWN) {
398 qeth_clear_cmd_buffers(&card->read);
399 qeth_clear_cmd_buffers(&card->write);
400 }
401 return rc;
402 }
403
404 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
405 int budget, int *done)
406 {
407 int work_done = 0;
408 struct sk_buff *skb;
409 struct qeth_hdr *hdr;
410 unsigned int len;
411
412 *done = 0;
413 BUG_ON(!budget);
414 while (budget) {
415 skb = qeth_core_get_next_skb(card,
416 &card->qdio.in_q->bufs[card->rx.b_index],
417 &card->rx.b_element, &card->rx.e_offset, &hdr);
418 if (!skb) {
419 *done = 1;
420 break;
421 }
422 skb->dev = card->dev;
423 switch (hdr->hdr.l2.id) {
424 case QETH_HEADER_TYPE_LAYER2:
425 skb->pkt_type = PACKET_HOST;
426 skb->protocol = eth_type_trans(skb, skb->dev);
427 skb->ip_summed = CHECKSUM_NONE;
428 if (skb->protocol == htons(ETH_P_802_2))
429 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
430 len = skb->len;
431 netif_receive_skb(skb);
432 break;
433 case QETH_HEADER_TYPE_OSN:
434 if (card->info.type == QETH_CARD_TYPE_OSN) {
435 skb_push(skb, sizeof(struct qeth_hdr));
436 skb_copy_to_linear_data(skb, hdr,
437 sizeof(struct qeth_hdr));
438 len = skb->len;
439 card->osn_info.data_cb(skb);
440 break;
441 }
442 /* else unknown */
443 default:
444 dev_kfree_skb_any(skb);
445 QETH_CARD_TEXT(card, 3, "inbunkno");
446 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
447 continue;
448 }
449 work_done++;
450 budget--;
451 card->stats.rx_packets++;
452 card->stats.rx_bytes += len;
453 }
454 return work_done;
455 }
456
457 static int qeth_l2_poll(struct napi_struct *napi, int budget)
458 {
459 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
460 int work_done = 0;
461 struct qeth_qdio_buffer *buffer;
462 int done;
463 int new_budget = budget;
464
465 if (card->options.performance_stats) {
466 card->perf_stats.inbound_cnt++;
467 card->perf_stats.inbound_start_time = qeth_get_micros();
468 }
469
470 while (1) {
471 if (!card->rx.b_count) {
472 card->rx.qdio_err = 0;
473 card->rx.b_count = qdio_get_next_buffers(
474 card->data.ccwdev, 0, &card->rx.b_index,
475 &card->rx.qdio_err);
476 if (card->rx.b_count <= 0) {
477 card->rx.b_count = 0;
478 break;
479 }
480 card->rx.b_element =
481 &card->qdio.in_q->bufs[card->rx.b_index]
482 .buffer->element[0];
483 card->rx.e_offset = 0;
484 }
485
486 while (card->rx.b_count) {
487 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
488 if (!(card->rx.qdio_err &&
489 qeth_check_qdio_errors(card, buffer->buffer,
490 card->rx.qdio_err, "qinerr")))
491 work_done += qeth_l2_process_inbound_buffer(
492 card, new_budget, &done);
493 else
494 done = 1;
495
496 if (done) {
497 if (card->options.performance_stats)
498 card->perf_stats.bufs_rec++;
499 qeth_put_buffer_pool_entry(card,
500 buffer->pool_entry);
501 qeth_queue_input_buffer(card, card->rx.b_index);
502 card->rx.b_count--;
503 if (card->rx.b_count) {
504 card->rx.b_index =
505 (card->rx.b_index + 1) %
506 QDIO_MAX_BUFFERS_PER_Q;
507 card->rx.b_element =
508 &card->qdio.in_q
509 ->bufs[card->rx.b_index]
510 .buffer->element[0];
511 card->rx.e_offset = 0;
512 }
513 }
514
515 if (work_done >= budget)
516 goto out;
517 else
518 new_budget = budget - work_done;
519 }
520 }
521
522 napi_complete(napi);
523 if (qdio_start_irq(card->data.ccwdev, 0))
524 napi_schedule(&card->napi);
525 out:
526 if (card->options.performance_stats)
527 card->perf_stats.inbound_time += qeth_get_micros() -
528 card->perf_stats.inbound_start_time;
529 return work_done;
530 }
531
532 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
533 enum qeth_ipa_cmds ipacmd,
534 int (*reply_cb) (struct qeth_card *,
535 struct qeth_reply*,
536 unsigned long))
537 {
538 struct qeth_ipa_cmd *cmd;
539 struct qeth_cmd_buffer *iob;
540
541 QETH_CARD_TEXT(card, 2, "L2sdmac");
542 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
543 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
544 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
545 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
546 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
547 }
548
549 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
550 struct qeth_reply *reply,
551 unsigned long data)
552 {
553 struct qeth_ipa_cmd *cmd;
554
555 QETH_CARD_TEXT(card, 2, "L2Smaccb");
556 cmd = (struct qeth_ipa_cmd *) data;
557 if (cmd->hdr.return_code) {
558 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
559 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
560 switch (cmd->hdr.return_code) {
561 case IPA_RC_L2_DUP_MAC:
562 case IPA_RC_L2_DUP_LAYER3_MAC:
563 dev_warn(&card->gdev->dev,
564 "MAC address %pM already exists\n",
565 cmd->data.setdelmac.mac);
566 break;
567 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
568 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
569 dev_warn(&card->gdev->dev,
570 "MAC address %pM is not authorized\n",
571 cmd->data.setdelmac.mac);
572 break;
573 default:
574 break;
575 }
576 cmd->hdr.return_code = -EIO;
577 } else {
578 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
579 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
580 OSA_ADDR_LEN);
581 dev_info(&card->gdev->dev,
582 "MAC address %pM successfully registered on device %s\n",
583 card->dev->dev_addr, card->dev->name);
584 }
585 return 0;
586 }
587
588 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
589 {
590 QETH_CARD_TEXT(card, 2, "L2Setmac");
591 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
592 qeth_l2_send_setmac_cb);
593 }
594
595 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
596 struct qeth_reply *reply,
597 unsigned long data)
598 {
599 struct qeth_ipa_cmd *cmd;
600
601 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
602 cmd = (struct qeth_ipa_cmd *) data;
603 if (cmd->hdr.return_code) {
604 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
605 cmd->hdr.return_code = -EIO;
606 return 0;
607 }
608 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
609
610 return 0;
611 }
612
613 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
614 {
615 QETH_CARD_TEXT(card, 2, "L2Delmac");
616 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
617 return 0;
618 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
619 qeth_l2_send_delmac_cb);
620 }
621
622 static int qeth_l2_request_initial_mac(struct qeth_card *card)
623 {
624 int rc = 0;
625 char vendor_pre[] = {0x02, 0x00, 0x00};
626
627 QETH_DBF_TEXT(SETUP, 2, "doL2init");
628 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
629
630 rc = qeth_query_setadapterparms(card);
631 if (rc) {
632 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
633 "device %s: x%x\n", CARD_BUS_ID(card), rc);
634 }
635
636 if (card->info.type == QETH_CARD_TYPE_IQD ||
637 card->info.type == QETH_CARD_TYPE_OSM ||
638 card->info.type == QETH_CARD_TYPE_OSX ||
639 card->info.guestlan) {
640 rc = qeth_setadpparms_change_macaddr(card);
641 if (rc) {
642 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
643 "device %s: x%x\n", CARD_BUS_ID(card), rc);
644 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
645 return rc;
646 }
647 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
648 } else {
649 random_ether_addr(card->dev->dev_addr);
650 memcpy(card->dev->dev_addr, vendor_pre, 3);
651 }
652 return 0;
653 }
654
655 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
656 {
657 struct sockaddr *addr = p;
658 struct qeth_card *card = dev->ml_priv;
659 int rc = 0;
660
661 QETH_CARD_TEXT(card, 3, "setmac");
662
663 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
664 QETH_CARD_TEXT(card, 3, "setmcINV");
665 return -EOPNOTSUPP;
666 }
667
668 if (card->info.type == QETH_CARD_TYPE_OSN ||
669 card->info.type == QETH_CARD_TYPE_OSM ||
670 card->info.type == QETH_CARD_TYPE_OSX) {
671 QETH_CARD_TEXT(card, 3, "setmcTYP");
672 return -EOPNOTSUPP;
673 }
674 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
675 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
676 QETH_CARD_TEXT(card, 3, "setmcREC");
677 return -ERESTARTSYS;
678 }
679 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
680 if (!rc)
681 rc = qeth_l2_send_setmac(card, addr->sa_data);
682 return rc;
683 }
684
685 static void qeth_l2_set_multicast_list(struct net_device *dev)
686 {
687 struct qeth_card *card = dev->ml_priv;
688 struct netdev_hw_addr *ha;
689
690 if (card->info.type == QETH_CARD_TYPE_OSN)
691 return ;
692
693 QETH_CARD_TEXT(card, 3, "setmulti");
694 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
695 (card->state != CARD_STATE_UP))
696 return;
697 qeth_l2_del_all_mc(card, 1);
698 spin_lock_bh(&card->mclock);
699 netdev_for_each_mc_addr(ha, dev)
700 qeth_l2_add_mc(card, ha->addr, 0);
701
702 netdev_for_each_uc_addr(ha, dev)
703 qeth_l2_add_mc(card, ha->addr, 1);
704
705 spin_unlock_bh(&card->mclock);
706 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
707 return;
708 qeth_setadp_promisc_mode(card);
709 }
710
711 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
712 {
713 int rc;
714 struct qeth_hdr *hdr = NULL;
715 int elements = 0;
716 struct qeth_card *card = dev->ml_priv;
717 struct sk_buff *new_skb = skb;
718 int ipv = qeth_get_ip_version(skb);
719 int cast_type = qeth_l2_get_cast_type(card, skb);
720 struct qeth_qdio_out_q *queue = card->qdio.out_qs
721 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
722 int tx_bytes = skb->len;
723 int data_offset = -1;
724 int elements_needed = 0;
725 int hd_len = 0;
726
727 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
728 card->stats.tx_carrier_errors++;
729 goto tx_drop;
730 }
731
732 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
733 (skb->protocol == htons(ETH_P_IPV6)))
734 goto tx_drop;
735
736 if (card->options.performance_stats) {
737 card->perf_stats.outbound_cnt++;
738 card->perf_stats.outbound_start_time = qeth_get_micros();
739 }
740 netif_stop_queue(dev);
741
742 if (card->info.type == QETH_CARD_TYPE_OSN)
743 hdr = (struct qeth_hdr *)skb->data;
744 else {
745 if (card->info.type == QETH_CARD_TYPE_IQD) {
746 new_skb = skb;
747 data_offset = ETH_HLEN;
748 hd_len = ETH_HLEN;
749 hdr = kmem_cache_alloc(qeth_core_header_cache,
750 GFP_ATOMIC);
751 if (!hdr)
752 goto tx_drop;
753 elements_needed++;
754 skb_reset_mac_header(new_skb);
755 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
756 hdr->hdr.l2.pkt_length = new_skb->len;
757 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
758 skb_mac_header(new_skb), ETH_HLEN);
759 } else {
760 /* create a clone with writeable headroom */
761 new_skb = skb_realloc_headroom(skb,
762 sizeof(struct qeth_hdr));
763 if (!new_skb)
764 goto tx_drop;
765 hdr = (struct qeth_hdr *)skb_push(new_skb,
766 sizeof(struct qeth_hdr));
767 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
768 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
769 }
770 }
771
772 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
773 elements_needed);
774 if (!elements) {
775 if (data_offset >= 0)
776 kmem_cache_free(qeth_core_header_cache, hdr);
777 goto tx_drop;
778 }
779
780 if (card->info.type != QETH_CARD_TYPE_IQD) {
781 if (qeth_hdr_chk_and_bounce(new_skb,
782 sizeof(struct qeth_hdr_layer2)))
783 goto tx_drop;
784 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
785 elements);
786 } else
787 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
788 elements, data_offset, hd_len);
789 if (!rc) {
790 card->stats.tx_packets++;
791 card->stats.tx_bytes += tx_bytes;
792 if (new_skb != skb)
793 dev_kfree_skb_any(skb);
794 rc = NETDEV_TX_OK;
795 } else {
796 if (data_offset >= 0)
797 kmem_cache_free(qeth_core_header_cache, hdr);
798
799 if (rc == -EBUSY) {
800 if (new_skb != skb)
801 dev_kfree_skb_any(new_skb);
802 return NETDEV_TX_BUSY;
803 } else
804 goto tx_drop;
805 }
806
807 netif_wake_queue(dev);
808 if (card->options.performance_stats)
809 card->perf_stats.outbound_time += qeth_get_micros() -
810 card->perf_stats.outbound_start_time;
811 return rc;
812
813 tx_drop:
814 card->stats.tx_dropped++;
815 card->stats.tx_errors++;
816 if ((new_skb != skb) && new_skb)
817 dev_kfree_skb_any(new_skb);
818 dev_kfree_skb_any(skb);
819 netif_wake_queue(dev);
820 return NETDEV_TX_OK;
821 }
822
823 static int __qeth_l2_open(struct net_device *dev)
824 {
825 struct qeth_card *card = dev->ml_priv;
826 int rc = 0;
827
828 QETH_CARD_TEXT(card, 4, "qethopen");
829 if (card->state == CARD_STATE_UP)
830 return rc;
831 if (card->state != CARD_STATE_SOFTSETUP)
832 return -ENODEV;
833
834 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
835 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
836 QETH_CARD_TEXT(card, 4, "nomacadr");
837 return -EPERM;
838 }
839 card->data.state = CH_STATE_UP;
840 card->state = CARD_STATE_UP;
841 netif_start_queue(dev);
842
843 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
844 napi_enable(&card->napi);
845 napi_schedule(&card->napi);
846 } else
847 rc = -EIO;
848 return rc;
849 }
850
851 static int qeth_l2_open(struct net_device *dev)
852 {
853 struct qeth_card *card = dev->ml_priv;
854
855 QETH_CARD_TEXT(card, 5, "qethope_");
856 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
857 QETH_CARD_TEXT(card, 3, "openREC");
858 return -ERESTARTSYS;
859 }
860 return __qeth_l2_open(dev);
861 }
862
863 static int qeth_l2_stop(struct net_device *dev)
864 {
865 struct qeth_card *card = dev->ml_priv;
866
867 QETH_CARD_TEXT(card, 4, "qethstop");
868 netif_tx_disable(dev);
869 if (card->state == CARD_STATE_UP) {
870 card->state = CARD_STATE_SOFTSETUP;
871 napi_disable(&card->napi);
872 }
873 return 0;
874 }
875
876 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
877 {
878 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
879
880 INIT_LIST_HEAD(&card->vid_list);
881 INIT_LIST_HEAD(&card->mc_list);
882 card->options.layer2 = 1;
883 card->info.hwtrap = 0;
884 card->discipline.start_poll = qeth_qdio_start_poll;
885 card->discipline.input_handler = (qdio_handler_t *)
886 qeth_qdio_input_handler;
887 card->discipline.output_handler = (qdio_handler_t *)
888 qeth_qdio_output_handler;
889 card->discipline.recover = qeth_l2_recover;
890 return 0;
891 }
892
893 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
894 {
895 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
896
897 qeth_set_allowed_threads(card, 0, 1);
898 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
899
900 if (cgdev->state == CCWGROUP_ONLINE)
901 qeth_l2_set_offline(cgdev);
902
903 if (card->dev) {
904 unregister_netdev(card->dev);
905 card->dev = NULL;
906 }
907 return;
908 }
909
910 static const struct ethtool_ops qeth_l2_ethtool_ops = {
911 .get_link = ethtool_op_get_link,
912 .get_strings = qeth_core_get_strings,
913 .get_ethtool_stats = qeth_core_get_ethtool_stats,
914 .get_sset_count = qeth_core_get_sset_count,
915 .get_drvinfo = qeth_core_get_drvinfo,
916 .get_settings = qeth_core_ethtool_get_settings,
917 };
918
919 static const struct ethtool_ops qeth_l2_osn_ops = {
920 .get_strings = qeth_core_get_strings,
921 .get_ethtool_stats = qeth_core_get_ethtool_stats,
922 .get_sset_count = qeth_core_get_sset_count,
923 .get_drvinfo = qeth_core_get_drvinfo,
924 };
925
926 static const struct net_device_ops qeth_l2_netdev_ops = {
927 .ndo_open = qeth_l2_open,
928 .ndo_stop = qeth_l2_stop,
929 .ndo_get_stats = qeth_get_stats,
930 .ndo_start_xmit = qeth_l2_hard_start_xmit,
931 .ndo_validate_addr = eth_validate_addr,
932 .ndo_set_rx_mode = qeth_l2_set_multicast_list,
933 .ndo_do_ioctl = qeth_l2_do_ioctl,
934 .ndo_set_mac_address = qeth_l2_set_mac_address,
935 .ndo_change_mtu = qeth_change_mtu,
936 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
937 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
938 .ndo_tx_timeout = qeth_tx_timeout,
939 };
940
941 static int qeth_l2_setup_netdev(struct qeth_card *card)
942 {
943 switch (card->info.type) {
944 case QETH_CARD_TYPE_IQD:
945 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
946 break;
947 case QETH_CARD_TYPE_OSN:
948 card->dev = alloc_netdev(0, "osn%d", ether_setup);
949 card->dev->flags |= IFF_NOARP;
950 break;
951 default:
952 card->dev = alloc_etherdev(0);
953 }
954
955 if (!card->dev)
956 return -ENODEV;
957
958 card->dev->ml_priv = card;
959 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
960 card->dev->mtu = card->info.initial_mtu;
961 card->dev->netdev_ops = &qeth_l2_netdev_ops;
962 if (card->info.type != QETH_CARD_TYPE_OSN)
963 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
964 else
965 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
966 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
967 card->info.broadcast_capable = 1;
968 qeth_l2_request_initial_mac(card);
969 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
970 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
971 return register_netdev(card->dev);
972 }
973
974 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
975 {
976 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
977 int rc = 0;
978 enum qeth_card_states recover_flag;
979
980 BUG_ON(!card);
981 mutex_lock(&card->discipline_mutex);
982 mutex_lock(&card->conf_mutex);
983 QETH_DBF_TEXT(SETUP, 2, "setonlin");
984 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
985
986 recover_flag = card->state;
987 rc = qeth_core_hardsetup_card(card);
988 if (rc) {
989 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
990 rc = -ENODEV;
991 goto out_remove;
992 }
993
994 if (!card->dev && qeth_l2_setup_netdev(card)) {
995 rc = -ENODEV;
996 goto out_remove;
997 }
998
999 if (card->info.type != QETH_CARD_TYPE_OSN)
1000 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1001
1002 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1003 if (card->info.hwtrap &&
1004 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1005 card->info.hwtrap = 0;
1006 } else
1007 card->info.hwtrap = 0;
1008
1009 card->state = CARD_STATE_HARDSETUP;
1010 memset(&card->rx, 0, sizeof(struct qeth_rx));
1011 qeth_print_status_message(card);
1012
1013 /* softsetup */
1014 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1015
1016 rc = qeth_send_startlan(card);
1017 if (rc) {
1018 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1019 if (rc == 0xe080) {
1020 dev_warn(&card->gdev->dev,
1021 "The LAN is offline\n");
1022 card->lan_online = 0;
1023 goto contin;
1024 }
1025 rc = -ENODEV;
1026 goto out_remove;
1027 } else
1028 card->lan_online = 1;
1029
1030 contin:
1031 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1032 (card->info.type == QETH_CARD_TYPE_OSX))
1033 /* configure isolation level */
1034 qeth_set_access_ctrl_online(card);
1035
1036 if (card->info.type != QETH_CARD_TYPE_OSN &&
1037 card->info.type != QETH_CARD_TYPE_OSM)
1038 qeth_l2_process_vlans(card);
1039
1040 netif_tx_disable(card->dev);
1041
1042 rc = qeth_init_qdio_queues(card);
1043 if (rc) {
1044 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1045 rc = -ENODEV;
1046 goto out_remove;
1047 }
1048 card->state = CARD_STATE_SOFTSETUP;
1049 if (card->lan_online)
1050 netif_carrier_on(card->dev);
1051 else
1052 netif_carrier_off(card->dev);
1053
1054 qeth_set_allowed_threads(card, 0xffffffff, 0);
1055 if (recover_flag == CARD_STATE_RECOVER) {
1056 if (recovery_mode &&
1057 card->info.type != QETH_CARD_TYPE_OSN) {
1058 __qeth_l2_open(card->dev);
1059 } else {
1060 rtnl_lock();
1061 dev_open(card->dev);
1062 rtnl_unlock();
1063 }
1064 /* this also sets saved unicast addresses */
1065 qeth_l2_set_multicast_list(card->dev);
1066 }
1067 /* let user_space know that device is online */
1068 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1069 mutex_unlock(&card->conf_mutex);
1070 mutex_unlock(&card->discipline_mutex);
1071 return 0;
1072
1073 out_remove:
1074 qeth_l2_stop_card(card, 0);
1075 ccw_device_set_offline(CARD_DDEV(card));
1076 ccw_device_set_offline(CARD_WDEV(card));
1077 ccw_device_set_offline(CARD_RDEV(card));
1078 if (recover_flag == CARD_STATE_RECOVER)
1079 card->state = CARD_STATE_RECOVER;
1080 else
1081 card->state = CARD_STATE_DOWN;
1082 mutex_unlock(&card->conf_mutex);
1083 mutex_unlock(&card->discipline_mutex);
1084 return rc;
1085 }
1086
1087 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1088 {
1089 return __qeth_l2_set_online(gdev, 0);
1090 }
1091
1092 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1093 int recovery_mode)
1094 {
1095 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1096 int rc = 0, rc2 = 0, rc3 = 0;
1097 enum qeth_card_states recover_flag;
1098
1099 mutex_lock(&card->discipline_mutex);
1100 mutex_lock(&card->conf_mutex);
1101 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1102 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1103
1104 if (card->dev && netif_carrier_ok(card->dev))
1105 netif_carrier_off(card->dev);
1106 recover_flag = card->state;
1107 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1108 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1109 card->info.hwtrap = 1;
1110 }
1111 qeth_l2_stop_card(card, recovery_mode);
1112 rc = ccw_device_set_offline(CARD_DDEV(card));
1113 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1114 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1115 if (!rc)
1116 rc = (rc2) ? rc2 : rc3;
1117 if (rc)
1118 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1119 if (recover_flag == CARD_STATE_UP)
1120 card->state = CARD_STATE_RECOVER;
1121 /* let user_space know that device is offline */
1122 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1123 mutex_unlock(&card->conf_mutex);
1124 mutex_unlock(&card->discipline_mutex);
1125 return 0;
1126 }
1127
1128 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1129 {
1130 return __qeth_l2_set_offline(cgdev, 0);
1131 }
1132
1133 static int qeth_l2_recover(void *ptr)
1134 {
1135 struct qeth_card *card;
1136 int rc = 0;
1137
1138 card = (struct qeth_card *) ptr;
1139 QETH_CARD_TEXT(card, 2, "recover1");
1140 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1141 return 0;
1142 QETH_CARD_TEXT(card, 2, "recover2");
1143 dev_warn(&card->gdev->dev,
1144 "A recovery process has been started for the device\n");
1145 __qeth_l2_set_offline(card->gdev, 1);
1146 rc = __qeth_l2_set_online(card->gdev, 1);
1147 if (!rc)
1148 dev_info(&card->gdev->dev,
1149 "Device successfully recovered!\n");
1150 else {
1151 rtnl_lock();
1152 dev_close(card->dev);
1153 rtnl_unlock();
1154 dev_warn(&card->gdev->dev, "The qeth device driver "
1155 "failed to recover an error on the device\n");
1156 }
1157 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1158 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1159 return 0;
1160 }
1161
1162 static int __init qeth_l2_init(void)
1163 {
1164 pr_info("register layer 2 discipline\n");
1165 return 0;
1166 }
1167
1168 static void __exit qeth_l2_exit(void)
1169 {
1170 pr_info("unregister layer 2 discipline\n");
1171 }
1172
1173 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1174 {
1175 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1176 qeth_set_allowed_threads(card, 0, 1);
1177 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1178 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1179 qeth_qdio_clear_card(card, 0);
1180 qeth_clear_qdio_buffers(card);
1181 }
1182
1183 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1184 {
1185 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1186
1187 if (card->dev)
1188 netif_device_detach(card->dev);
1189 qeth_set_allowed_threads(card, 0, 1);
1190 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1191 if (gdev->state == CCWGROUP_OFFLINE)
1192 return 0;
1193 if (card->state == CARD_STATE_UP) {
1194 if (card->info.hwtrap)
1195 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1196 __qeth_l2_set_offline(card->gdev, 1);
1197 } else
1198 __qeth_l2_set_offline(card->gdev, 0);
1199 return 0;
1200 }
1201
1202 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1203 {
1204 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1205 int rc = 0;
1206
1207 if (gdev->state == CCWGROUP_OFFLINE)
1208 goto out;
1209
1210 if (card->state == CARD_STATE_RECOVER) {
1211 rc = __qeth_l2_set_online(card->gdev, 1);
1212 if (rc) {
1213 rtnl_lock();
1214 dev_close(card->dev);
1215 rtnl_unlock();
1216 }
1217 } else
1218 rc = __qeth_l2_set_online(card->gdev, 0);
1219 out:
1220 qeth_set_allowed_threads(card, 0xffffffff, 0);
1221 if (card->dev)
1222 netif_device_attach(card->dev);
1223 if (rc)
1224 dev_warn(&card->gdev->dev, "The qeth device driver "
1225 "failed to recover an error on the device\n");
1226 return rc;
1227 }
1228
1229 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1230 .probe = qeth_l2_probe_device,
1231 .remove = qeth_l2_remove_device,
1232 .set_online = qeth_l2_set_online,
1233 .set_offline = qeth_l2_set_offline,
1234 .shutdown = qeth_l2_shutdown,
1235 .freeze = qeth_l2_pm_suspend,
1236 .thaw = qeth_l2_pm_resume,
1237 .restore = qeth_l2_pm_resume,
1238 };
1239 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1240
1241 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1242 struct qeth_cmd_buffer *iob)
1243 {
1244 unsigned long flags;
1245 int rc = 0;
1246
1247 QETH_CARD_TEXT(card, 5, "osndctrd");
1248
1249 wait_event(card->wait_q,
1250 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1251 qeth_prepare_control_data(card, len, iob);
1252 QETH_CARD_TEXT(card, 6, "osnoirqp");
1253 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1254 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1255 (addr_t) iob, 0, 0);
1256 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1257 if (rc) {
1258 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1259 "ccw_device_start rc = %i\n", rc);
1260 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1261 qeth_release_buffer(iob->channel, iob);
1262 atomic_set(&card->write.irq_pending, 0);
1263 wake_up(&card->wait_q);
1264 }
1265 return rc;
1266 }
1267
1268 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1269 struct qeth_cmd_buffer *iob, int data_len)
1270 {
1271 u16 s1, s2;
1272
1273 QETH_CARD_TEXT(card, 4, "osndipa");
1274
1275 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1276 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1277 s2 = (u16)data_len;
1278 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1279 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1280 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1281 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1282 return qeth_osn_send_control_data(card, s1, iob);
1283 }
1284
1285 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1286 {
1287 struct qeth_cmd_buffer *iob;
1288 struct qeth_card *card;
1289 int rc;
1290
1291 if (!dev)
1292 return -ENODEV;
1293 card = dev->ml_priv;
1294 if (!card)
1295 return -ENODEV;
1296 QETH_CARD_TEXT(card, 2, "osnsdmc");
1297 if ((card->state != CARD_STATE_UP) &&
1298 (card->state != CARD_STATE_SOFTSETUP))
1299 return -ENODEV;
1300 iob = qeth_wait_for_buffer(&card->write);
1301 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1302 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1303 return rc;
1304 }
1305 EXPORT_SYMBOL(qeth_osn_assist);
1306
1307 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1308 int (*assist_cb)(struct net_device *, void *),
1309 int (*data_cb)(struct sk_buff *))
1310 {
1311 struct qeth_card *card;
1312
1313 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1314 if (*dev == NULL)
1315 return -ENODEV;
1316 card = (*dev)->ml_priv;
1317 if (!card)
1318 return -ENODEV;
1319 QETH_CARD_TEXT(card, 2, "osnreg");
1320 if ((assist_cb == NULL) || (data_cb == NULL))
1321 return -EINVAL;
1322 card->osn_info.assist_cb = assist_cb;
1323 card->osn_info.data_cb = data_cb;
1324 return 0;
1325 }
1326 EXPORT_SYMBOL(qeth_osn_register);
1327
1328 void qeth_osn_deregister(struct net_device *dev)
1329 {
1330 struct qeth_card *card;
1331
1332 if (!dev)
1333 return;
1334 card = dev->ml_priv;
1335 if (!card)
1336 return;
1337 QETH_CARD_TEXT(card, 2, "osndereg");
1338 card->osn_info.assist_cb = NULL;
1339 card->osn_info.data_cb = NULL;
1340 return;
1341 }
1342 EXPORT_SYMBOL(qeth_osn_deregister);
1343
1344 module_init(qeth_l2_init);
1345 module_exit(qeth_l2_exit);
1346 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1347 MODULE_DESCRIPTION("qeth layer 2 discipline");
1348 MODULE_LICENSE("GPL");