?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux 4.2.1
[linux/fpc-iii.git] / drivers / s390 / net / qeth_l2_main.c
blob2e65b989a9ea529b4e69a555eee2f2fb494c2752
1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/slab.h>
18 #include <linux/etherdevice.h>
19 #include <linux/mii.h>
20 #include <linux/ip.h>
21 #include <linux/list.h>
22
23 #include "qeth_core.h"
24 #include "qeth_l2.h"
25
26 static int qeth_l2_set_offline(struct ccwgroup_device *);
27 static int qeth_l2_stop(struct net_device *);
28 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
29 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
30 enum qeth_ipa_cmds);
31 static void qeth_l2_set_multicast_list(struct net_device *);
32 static int qeth_l2_recover(void *);
33 static void qeth_bridgeport_query_support(struct qeth_card *card);
34 static void qeth_bridge_state_change(struct qeth_card *card,
35 struct qeth_ipa_cmd *cmd);
36 static void qeth_bridge_host_event(struct qeth_card *card,
37 struct qeth_ipa_cmd *cmd);
38
39 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
40 {
41 struct qeth_card *card = dev->ml_priv;
42 struct mii_ioctl_data *mii_data;
43 int rc = 0;
44
45 if (!card)
46 return -ENODEV;
47
48 if (!qeth_card_hw_is_reachable(card))
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 case SIOC_QETH_QUERY_OAT:
79 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
80 break;
81 default:
82 rc = -EOPNOTSUPP;
83 }
84 if (rc)
85 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
86 return rc;
87 }
88
89 static int qeth_l2_verify_dev(struct net_device *dev)
90 {
91 struct qeth_card *card;
92 unsigned long flags;
93 int rc = 0;
94
95 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
96 list_for_each_entry(card, &qeth_core_card_list.list, list) {
97 if (card->dev == dev) {
98 rc = QETH_REAL_CARD;
99 break;
100 }
101 }
102 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
103
104 return rc;
105 }
106
107 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
108 {
109 struct qeth_card *card;
110 struct net_device *ndev;
111 __u16 temp_dev_no;
112 unsigned long flags;
113 struct ccw_dev_id read_devid;
114
115 ndev = NULL;
116 memcpy(&temp_dev_no, read_dev_no, 2);
117 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
118 list_for_each_entry(card, &qeth_core_card_list.list, list) {
119 ccw_device_get_id(CARD_RDEV(card), &read_devid);
120 if (read_devid.devno == temp_dev_no) {
121 ndev = card->dev;
122 break;
123 }
124 }
125 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
126 return ndev;
127 }
128
129 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
130 {
131 int rc;
132
133 if (retcode)
134 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
135 switch (retcode) {
136 case IPA_RC_SUCCESS:
137 rc = 0;
138 break;
139 case IPA_RC_L2_UNSUPPORTED_CMD:
140 rc = -EOPNOTSUPP;
141 break;
142 case IPA_RC_L2_ADDR_TABLE_FULL:
143 rc = -ENOSPC;
144 break;
145 case IPA_RC_L2_DUP_MAC:
146 case IPA_RC_L2_DUP_LAYER3_MAC:
147 rc = -EEXIST;
148 break;
149 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
150 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
151 rc = -EPERM;
152 break;
153 case IPA_RC_L2_MAC_NOT_FOUND:
154 rc = -ENOENT;
155 break;
156 case -ENOMEM:
157 rc = -ENOMEM;
158 break;
159 default:
160 rc = -EIO;
161 break;
162 }
163 return rc;
164 }
165
166 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
167 {
168 int rc;
169
170 QETH_CARD_TEXT(card, 2, "L2Sgmac");
171 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
172 IPA_CMD_SETGMAC));
173 if (rc == -EEXIST)
174 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
175 mac, QETH_CARD_IFNAME(card));
176 else if (rc)
177 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
178 mac, QETH_CARD_IFNAME(card), rc);
179 return rc;
180 }
181
182 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
183 {
184 int rc;
185
186 QETH_CARD_TEXT(card, 2, "L2Dgmac");
187 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
188 IPA_CMD_DELGMAC));
189 if (rc)
190 QETH_DBF_MESSAGE(2,
191 "Could not delete group MAC %pM on %s: %d\n",
192 mac, QETH_CARD_IFNAME(card), rc);
193 return rc;
194 }
195
196 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
197 {
198 struct qeth_mc_mac *mc;
199 int rc;
200
201 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
202
203 if (!mc)
204 return;
205
206 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
207 mc->mc_addrlen = OSA_ADDR_LEN;
208 mc->is_vmac = vmac;
209
210 if (vmac) {
211 rc = qeth_setdel_makerc(card,
212 qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC));
213 } else {
214 rc = qeth_setdel_makerc(card,
215 qeth_l2_send_setgroupmac(card, mac));
216 }
217
218 if (!rc)
219 list_add_tail(&mc->list, &card->mc_list);
220 else
221 kfree(mc);
222 }
223
224 static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
225 {
226 struct qeth_mc_mac *mc, *tmp;
227
228 spin_lock_bh(&card->mclock);
229 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
230 if (del) {
231 if (mc->is_vmac)
232 qeth_l2_send_setdelmac(card, mc->mc_addr,
233 IPA_CMD_DELVMAC);
234 else
235 qeth_l2_send_delgroupmac(card, mc->mc_addr);
236 }
237 list_del(&mc->list);
238 kfree(mc);
239 }
240 spin_unlock_bh(&card->mclock);
241 }
242
243 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
244 struct sk_buff *skb)
245 {
246 if (card->info.type == QETH_CARD_TYPE_OSN)
247 return RTN_UNSPEC;
248 if (is_broadcast_ether_addr(skb->data))
249 return RTN_BROADCAST;
250 if (is_multicast_ether_addr(skb->data))
251 return RTN_MULTICAST;
252 return RTN_UNSPEC;
253 }
254
255 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
256 struct sk_buff *skb, int cast_type)
257 {
258 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
259
260 memset(hdr, 0, sizeof(struct qeth_hdr));
261 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
262
263 /* set byte byte 3 to casting flags */
264 if (cast_type == RTN_MULTICAST)
265 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
266 else if (cast_type == RTN_BROADCAST)
267 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
268 else
269 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
270
271 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
272 /* VSWITCH relies on the VLAN
273 * information to be present in
274 * the QDIO header */
275 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
276 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
277 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
278 }
279 }
280
281 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
282 struct qeth_reply *reply, unsigned long data)
283 {
284 struct qeth_ipa_cmd *cmd;
285
286 QETH_CARD_TEXT(card, 2, "L2sdvcb");
287 cmd = (struct qeth_ipa_cmd *) data;
288 if (cmd->hdr.return_code) {
289 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
290 "Continuing\n", cmd->data.setdelvlan.vlan_id,
291 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
292 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
293 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
294 }
295 return 0;
296 }
297
298 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
299 enum qeth_ipa_cmds ipacmd)
300 {
301 struct qeth_ipa_cmd *cmd;
302 struct qeth_cmd_buffer *iob;
303
304 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
305 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
306 if (!iob)
307 return -ENOMEM;
308 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
309 cmd->data.setdelvlan.vlan_id = i;
310 return qeth_send_ipa_cmd(card, iob,
311 qeth_l2_send_setdelvlan_cb, NULL);
312 }
313
314 static void qeth_l2_process_vlans(struct qeth_card *card)
315 {
316 struct qeth_vlan_vid *id;
317 QETH_CARD_TEXT(card, 3, "L2prcvln");
318 spin_lock_bh(&card->vlanlock);
319 list_for_each_entry(id, &card->vid_list, list) {
320 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
321 }
322 spin_unlock_bh(&card->vlanlock);
323 }
324
325 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
326 __be16 proto, u16 vid)
327 {
328 struct qeth_card *card = dev->ml_priv;
329 struct qeth_vlan_vid *id;
330 int rc;
331
332 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
333 if (!vid)
334 return 0;
335 if (card->info.type == QETH_CARD_TYPE_OSM) {
336 QETH_CARD_TEXT(card, 3, "aidOSM");
337 return 0;
338 }
339 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
340 QETH_CARD_TEXT(card, 3, "aidREC");
341 return 0;
342 }
343 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
344 if (id) {
345 id->vid = vid;
346 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
347 if (rc) {
348 kfree(id);
349 return rc;
350 }
351 spin_lock_bh(&card->vlanlock);
352 list_add_tail(&id->list, &card->vid_list);
353 spin_unlock_bh(&card->vlanlock);
354 } else {
355 return -ENOMEM;
356 }
357 return 0;
358 }
359
360 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
361 __be16 proto, u16 vid)
362 {
363 struct qeth_vlan_vid *id, *tmpid = NULL;
364 struct qeth_card *card = dev->ml_priv;
365 int rc = 0;
366
367 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
368 if (card->info.type == QETH_CARD_TYPE_OSM) {
369 QETH_CARD_TEXT(card, 3, "kidOSM");
370 return 0;
371 }
372 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
373 QETH_CARD_TEXT(card, 3, "kidREC");
374 return 0;
375 }
376 spin_lock_bh(&card->vlanlock);
377 list_for_each_entry(id, &card->vid_list, list) {
378 if (id->vid == vid) {
379 list_del(&id->list);
380 tmpid = id;
381 break;
382 }
383 }
384 spin_unlock_bh(&card->vlanlock);
385 if (tmpid) {
386 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
387 kfree(tmpid);
388 }
389 qeth_l2_set_multicast_list(card->dev);
390 return rc;
391 }
392
393 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
394 {
395 int rc = 0;
396
397 QETH_DBF_TEXT(SETUP , 2, "stopcard");
398 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
399
400 qeth_set_allowed_threads(card, 0, 1);
401 if (card->read.state == CH_STATE_UP &&
402 card->write.state == CH_STATE_UP &&
403 (card->state == CARD_STATE_UP)) {
404 if (recovery_mode &&
405 card->info.type != QETH_CARD_TYPE_OSN) {
406 qeth_l2_stop(card->dev);
407 } else {
408 rtnl_lock();
409 dev_close(card->dev);
410 rtnl_unlock();
411 }
412 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
413 card->state = CARD_STATE_SOFTSETUP;
414 }
415 if (card->state == CARD_STATE_SOFTSETUP) {
416 qeth_l2_del_all_mc(card, 0);
417 qeth_clear_ipacmd_list(card);
418 card->state = CARD_STATE_HARDSETUP;
419 }
420 if (card->state == CARD_STATE_HARDSETUP) {
421 qeth_qdio_clear_card(card, 0);
422 qeth_clear_qdio_buffers(card);
423 qeth_clear_working_pool_list(card);
424 card->state = CARD_STATE_DOWN;
425 }
426 if (card->state == CARD_STATE_DOWN) {
427 qeth_clear_cmd_buffers(&card->read);
428 qeth_clear_cmd_buffers(&card->write);
429 }
430 return rc;
431 }
432
433 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
434 int budget, int *done)
435 {
436 int work_done = 0;
437 struct sk_buff *skb;
438 struct qeth_hdr *hdr;
439 unsigned int len;
440
441 *done = 0;
442 WARN_ON_ONCE(!budget);
443 while (budget) {
444 skb = qeth_core_get_next_skb(card,
445 &card->qdio.in_q->bufs[card->rx.b_index],
446 &card->rx.b_element, &card->rx.e_offset, &hdr);
447 if (!skb) {
448 *done = 1;
449 break;
450 }
451 skb->dev = card->dev;
452 switch (hdr->hdr.l2.id) {
453 case QETH_HEADER_TYPE_LAYER2:
454 skb->pkt_type = PACKET_HOST;
455 skb->protocol = eth_type_trans(skb, skb->dev);
456 skb->ip_summed = CHECKSUM_NONE;
457 if (skb->protocol == htons(ETH_P_802_2))
458 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
459 len = skb->len;
460 netif_receive_skb(skb);
461 break;
462 case QETH_HEADER_TYPE_OSN:
463 if (card->info.type == QETH_CARD_TYPE_OSN) {
464 skb_push(skb, sizeof(struct qeth_hdr));
465 skb_copy_to_linear_data(skb, hdr,
466 sizeof(struct qeth_hdr));
467 len = skb->len;
468 card->osn_info.data_cb(skb);
469 break;
470 }
471 /* else unknown */
472 default:
473 dev_kfree_skb_any(skb);
474 QETH_CARD_TEXT(card, 3, "inbunkno");
475 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
476 continue;
477 }
478 work_done++;
479 budget--;
480 card->stats.rx_packets++;
481 card->stats.rx_bytes += len;
482 }
483 return work_done;
484 }
485
486 static int qeth_l2_poll(struct napi_struct *napi, int budget)
487 {
488 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
489 int work_done = 0;
490 struct qeth_qdio_buffer *buffer;
491 int done;
492 int new_budget = budget;
493
494 if (card->options.performance_stats) {
495 card->perf_stats.inbound_cnt++;
496 card->perf_stats.inbound_start_time = qeth_get_micros();
497 }
498
499 while (1) {
500 if (!card->rx.b_count) {
501 card->rx.qdio_err = 0;
502 card->rx.b_count = qdio_get_next_buffers(
503 card->data.ccwdev, 0, &card->rx.b_index,
504 &card->rx.qdio_err);
505 if (card->rx.b_count <= 0) {
506 card->rx.b_count = 0;
507 break;
508 }
509 card->rx.b_element =
510 &card->qdio.in_q->bufs[card->rx.b_index]
511 .buffer->element[0];
512 card->rx.e_offset = 0;
513 }
514
515 while (card->rx.b_count) {
516 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
517 if (!(card->rx.qdio_err &&
518 qeth_check_qdio_errors(card, buffer->buffer,
519 card->rx.qdio_err, "qinerr")))
520 work_done += qeth_l2_process_inbound_buffer(
521 card, new_budget, &done);
522 else
523 done = 1;
524
525 if (done) {
526 if (card->options.performance_stats)
527 card->perf_stats.bufs_rec++;
528 qeth_put_buffer_pool_entry(card,
529 buffer->pool_entry);
530 qeth_queue_input_buffer(card, card->rx.b_index);
531 card->rx.b_count--;
532 if (card->rx.b_count) {
533 card->rx.b_index =
534 (card->rx.b_index + 1) %
535 QDIO_MAX_BUFFERS_PER_Q;
536 card->rx.b_element =
537 &card->qdio.in_q
538 ->bufs[card->rx.b_index]
539 .buffer->element[0];
540 card->rx.e_offset = 0;
541 }
542 }
543
544 if (work_done >= budget)
545 goto out;
546 else
547 new_budget = budget - work_done;
548 }
549 }
550
551 napi_complete(napi);
552 if (qdio_start_irq(card->data.ccwdev, 0))
553 napi_schedule(&card->napi);
554 out:
555 if (card->options.performance_stats)
556 card->perf_stats.inbound_time += qeth_get_micros() -
557 card->perf_stats.inbound_start_time;
558 return work_done;
559 }
560
561 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
562 enum qeth_ipa_cmds ipacmd)
563 {
564 struct qeth_ipa_cmd *cmd;
565 struct qeth_cmd_buffer *iob;
566
567 QETH_CARD_TEXT(card, 2, "L2sdmac");
568 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
569 if (!iob)
570 return -ENOMEM;
571 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
572 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
573 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
574 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
575 }
576
577 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
578 {
579 int rc;
580
581 QETH_CARD_TEXT(card, 2, "L2Setmac");
582 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
583 IPA_CMD_SETVMAC));
584 if (rc == 0) {
585 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
586 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
587 dev_info(&card->gdev->dev,
588 "MAC address %pM successfully registered on device %s\n",
589 card->dev->dev_addr, card->dev->name);
590 } else {
591 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
592 switch (rc) {
593 case -EEXIST:
594 dev_warn(&card->gdev->dev,
595 "MAC address %pM already exists\n", mac);
596 break;
597 case -EPERM:
598 dev_warn(&card->gdev->dev,
599 "MAC address %pM is not authorized\n", mac);
600 break;
601 }
602 }
603 return rc;
604 }
605
606 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
607 {
608 int rc;
609
610 QETH_CARD_TEXT(card, 2, "L2Delmac");
611 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
612 return 0;
613 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
614 IPA_CMD_DELVMAC));
615 if (rc == 0)
616 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
617 return rc;
618 }
619
620 static int qeth_l2_request_initial_mac(struct qeth_card *card)
621 {
622 int rc = 0;
623 char vendor_pre[] = {0x02, 0x00, 0x00};
624
625 QETH_DBF_TEXT(SETUP, 2, "doL2init");
626 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
627
628 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
629 rc = qeth_query_setadapterparms(card);
630 if (rc) {
631 QETH_DBF_MESSAGE(2, "could not query adapter "
632 "parameters on device %s: x%x\n",
633 CARD_BUS_ID(card), rc);
634 }
635 }
636
637 if (card->info.type == QETH_CARD_TYPE_IQD ||
638 card->info.type == QETH_CARD_TYPE_OSM ||
639 card->info.type == QETH_CARD_TYPE_OSX ||
640 card->info.guestlan) {
641 rc = qeth_setadpparms_change_macaddr(card);
642 if (rc) {
643 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
644 "device %s: x%x\n", CARD_BUS_ID(card), rc);
645 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
646 return rc;
647 }
648 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
649 } else {
650 eth_random_addr(card->dev->dev_addr);
651 memcpy(card->dev->dev_addr, vendor_pre, 3);
652 }
653 return 0;
654 }
655
656 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
657 {
658 struct sockaddr *addr = p;
659 struct qeth_card *card = dev->ml_priv;
660 int rc = 0;
661
662 QETH_CARD_TEXT(card, 3, "setmac");
663
664 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
665 QETH_CARD_TEXT(card, 3, "setmcINV");
666 return -EOPNOTSUPP;
667 }
668
669 if (card->info.type == QETH_CARD_TYPE_OSN ||
670 card->info.type == QETH_CARD_TYPE_OSM ||
671 card->info.type == QETH_CARD_TYPE_OSX) {
672 QETH_CARD_TEXT(card, 3, "setmcTYP");
673 return -EOPNOTSUPP;
674 }
675 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
676 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
677 QETH_CARD_TEXT(card, 3, "setmcREC");
678 return -ERESTARTSYS;
679 }
680 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
681 if (!rc || (rc == -ENOENT))
682 rc = qeth_l2_send_setmac(card, addr->sa_data);
683 return rc ? -EINVAL : 0;
684 }
685
686 static void qeth_promisc_to_bridge(struct qeth_card *card)
687 {
688 struct net_device *dev = card->dev;
689 enum qeth_ipa_promisc_modes promisc_mode;
690 int role;
691 int rc;
692
693 QETH_CARD_TEXT(card, 3, "pmisc2br");
694
695 if (!card->options.sbp.reflect_promisc)
696 return;
697 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
698 : SET_PROMISC_MODE_OFF;
699 if (promisc_mode == card->info.promisc_mode)
700 return;
701
702 if (promisc_mode == SET_PROMISC_MODE_ON) {
703 if (card->options.sbp.reflect_promisc_primary)
704 role = QETH_SBP_ROLE_PRIMARY;
705 else
706 role = QETH_SBP_ROLE_SECONDARY;
707 } else
708 role = QETH_SBP_ROLE_NONE;
709
710 rc = qeth_bridgeport_setrole(card, role);
711 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
712 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
713 if (!rc) {
714 card->options.sbp.role = role;
715 card->info.promisc_mode = promisc_mode;
716 }
717 }
718
719 static void qeth_l2_set_multicast_list(struct net_device *dev)
720 {
721 struct qeth_card *card = dev->ml_priv;
722 struct netdev_hw_addr *ha;
723
724 if (card->info.type == QETH_CARD_TYPE_OSN)
725 return ;
726
727 QETH_CARD_TEXT(card, 3, "setmulti");
728 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
729 (card->state != CARD_STATE_UP))
730 return;
731 qeth_l2_del_all_mc(card, 1);
732 spin_lock_bh(&card->mclock);
733 netdev_for_each_mc_addr(ha, dev)
734 qeth_l2_add_mc(card, ha->addr, 0);
735
736 netdev_for_each_uc_addr(ha, dev)
737 qeth_l2_add_mc(card, ha->addr, 1);
738
739 spin_unlock_bh(&card->mclock);
740 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
741 qeth_setadp_promisc_mode(card);
742 else
743 qeth_promisc_to_bridge(card);
744 }
745
746 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
747 {
748 int rc;
749 struct qeth_hdr *hdr = NULL;
750 int elements = 0;
751 struct qeth_card *card = dev->ml_priv;
752 struct sk_buff *new_skb = skb;
753 int cast_type = qeth_l2_get_cast_type(card, skb);
754 struct qeth_qdio_out_q *queue;
755 int tx_bytes = skb->len;
756 int data_offset = -1;
757 int elements_needed = 0;
758 int hd_len = 0;
759
760 if (card->qdio.do_prio_queueing || (cast_type &&
761 card->info.is_multicast_different))
762 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
763 qeth_get_ip_version(skb), cast_type)];
764 else
765 queue = card->qdio.out_qs[card->qdio.default_out_queue];
766
767 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
768 card->stats.tx_carrier_errors++;
769 goto tx_drop;
770 }
771
772 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
773 (skb->protocol == htons(ETH_P_IPV6)))
774 goto tx_drop;
775
776 if (card->options.performance_stats) {
777 card->perf_stats.outbound_cnt++;
778 card->perf_stats.outbound_start_time = qeth_get_micros();
779 }
780 netif_stop_queue(dev);
781
782 if (card->info.type == QETH_CARD_TYPE_OSN)
783 hdr = (struct qeth_hdr *)skb->data;
784 else {
785 if (card->info.type == QETH_CARD_TYPE_IQD) {
786 new_skb = skb;
787 data_offset = ETH_HLEN;
788 hd_len = ETH_HLEN;
789 hdr = kmem_cache_alloc(qeth_core_header_cache,
790 GFP_ATOMIC);
791 if (!hdr)
792 goto tx_drop;
793 elements_needed++;
794 skb_reset_mac_header(new_skb);
795 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
796 hdr->hdr.l2.pkt_length = new_skb->len;
797 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
798 skb_mac_header(new_skb), ETH_HLEN);
799 } else {
800 /* create a clone with writeable headroom */
801 new_skb = skb_realloc_headroom(skb,
802 sizeof(struct qeth_hdr));
803 if (!new_skb)
804 goto tx_drop;
805 hdr = (struct qeth_hdr *)skb_push(new_skb,
806 sizeof(struct qeth_hdr));
807 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
808 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
809 }
810 }
811
812 elements = qeth_get_elements_no(card, new_skb, elements_needed);
813 if (!elements) {
814 if (data_offset >= 0)
815 kmem_cache_free(qeth_core_header_cache, hdr);
816 goto tx_drop;
817 }
818
819 if (card->info.type != QETH_CARD_TYPE_IQD) {
820 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
821 sizeof(struct qeth_hdr_layer2)))
822 goto tx_drop;
823 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
824 elements);
825 } else
826 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
827 elements, data_offset, hd_len);
828 if (!rc) {
829 card->stats.tx_packets++;
830 card->stats.tx_bytes += tx_bytes;
831 if (new_skb != skb)
832 dev_kfree_skb_any(skb);
833 rc = NETDEV_TX_OK;
834 } else {
835 if (data_offset >= 0)
836 kmem_cache_free(qeth_core_header_cache, hdr);
837
838 if (rc == -EBUSY) {
839 if (new_skb != skb)
840 dev_kfree_skb_any(new_skb);
841 return NETDEV_TX_BUSY;
842 } else
843 goto tx_drop;
844 }
845
846 netif_wake_queue(dev);
847 if (card->options.performance_stats)
848 card->perf_stats.outbound_time += qeth_get_micros() -
849 card->perf_stats.outbound_start_time;
850 return rc;
851
852 tx_drop:
853 card->stats.tx_dropped++;
854 card->stats.tx_errors++;
855 if ((new_skb != skb) && new_skb)
856 dev_kfree_skb_any(new_skb);
857 dev_kfree_skb_any(skb);
858 netif_wake_queue(dev);
859 return NETDEV_TX_OK;
860 }
861
862 static int __qeth_l2_open(struct net_device *dev)
863 {
864 struct qeth_card *card = dev->ml_priv;
865 int rc = 0;
866
867 QETH_CARD_TEXT(card, 4, "qethopen");
868 if (card->state == CARD_STATE_UP)
869 return rc;
870 if (card->state != CARD_STATE_SOFTSETUP)
871 return -ENODEV;
872
873 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
874 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
875 QETH_CARD_TEXT(card, 4, "nomacadr");
876 return -EPERM;
877 }
878 card->data.state = CH_STATE_UP;
879 card->state = CARD_STATE_UP;
880 netif_start_queue(dev);
881
882 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
883 napi_enable(&card->napi);
884 napi_schedule(&card->napi);
885 } else
886 rc = -EIO;
887 return rc;
888 }
889
890 static int qeth_l2_open(struct net_device *dev)
891 {
892 struct qeth_card *card = dev->ml_priv;
893
894 QETH_CARD_TEXT(card, 5, "qethope_");
895 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
896 QETH_CARD_TEXT(card, 3, "openREC");
897 return -ERESTARTSYS;
898 }
899 return __qeth_l2_open(dev);
900 }
901
902 static int qeth_l2_stop(struct net_device *dev)
903 {
904 struct qeth_card *card = dev->ml_priv;
905
906 QETH_CARD_TEXT(card, 4, "qethstop");
907 netif_tx_disable(dev);
908 if (card->state == CARD_STATE_UP) {
909 card->state = CARD_STATE_SOFTSETUP;
910 napi_disable(&card->napi);
911 }
912 return 0;
913 }
914
915 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
916 {
917 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
918
919 qeth_l2_create_device_attributes(&gdev->dev);
920 INIT_LIST_HEAD(&card->vid_list);
921 INIT_LIST_HEAD(&card->mc_list);
922 card->options.layer2 = 1;
923 card->info.hwtrap = 0;
924 return 0;
925 }
926
927 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
928 {
929 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
930
931 qeth_l2_remove_device_attributes(&cgdev->dev);
932 qeth_set_allowed_threads(card, 0, 1);
933 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
934
935 if (cgdev->state == CCWGROUP_ONLINE)
936 qeth_l2_set_offline(cgdev);
937
938 if (card->dev) {
939 unregister_netdev(card->dev);
940 card->dev = NULL;
941 }
942 return;
943 }
944
945 static const struct ethtool_ops qeth_l2_ethtool_ops = {
946 .get_link = ethtool_op_get_link,
947 .get_strings = qeth_core_get_strings,
948 .get_ethtool_stats = qeth_core_get_ethtool_stats,
949 .get_sset_count = qeth_core_get_sset_count,
950 .get_drvinfo = qeth_core_get_drvinfo,
951 .get_settings = qeth_core_ethtool_get_settings,
952 };
953
954 static const struct ethtool_ops qeth_l2_osn_ops = {
955 .get_strings = qeth_core_get_strings,
956 .get_ethtool_stats = qeth_core_get_ethtool_stats,
957 .get_sset_count = qeth_core_get_sset_count,
958 .get_drvinfo = qeth_core_get_drvinfo,
959 };
960
961 static const struct net_device_ops qeth_l2_netdev_ops = {
962 .ndo_open = qeth_l2_open,
963 .ndo_stop = qeth_l2_stop,
964 .ndo_get_stats = qeth_get_stats,
965 .ndo_start_xmit = qeth_l2_hard_start_xmit,
966 .ndo_validate_addr = eth_validate_addr,
967 .ndo_set_rx_mode = qeth_l2_set_multicast_list,
968 .ndo_do_ioctl = qeth_l2_do_ioctl,
969 .ndo_set_mac_address = qeth_l2_set_mac_address,
970 .ndo_change_mtu = qeth_change_mtu,
971 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
972 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
973 .ndo_tx_timeout = qeth_tx_timeout,
974 };
975
976 static int qeth_l2_setup_netdev(struct qeth_card *card)
977 {
978 switch (card->info.type) {
979 case QETH_CARD_TYPE_IQD:
980 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
981 ether_setup);
982 break;
983 case QETH_CARD_TYPE_OSN:
984 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
985 ether_setup);
986 card->dev->flags |= IFF_NOARP;
987 break;
988 default:
989 card->dev = alloc_etherdev(0);
990 }
991
992 if (!card->dev)
993 return -ENODEV;
994
995 card->dev->ml_priv = card;
996 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
997 card->dev->mtu = card->info.initial_mtu;
998 card->dev->netdev_ops = &qeth_l2_netdev_ops;
999 card->dev->ethtool_ops =
1000 (card->info.type != QETH_CARD_TYPE_OSN) ?
1001 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
1002 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1003 card->info.broadcast_capable = 1;
1004 qeth_l2_request_initial_mac(card);
1005 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1006 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1007 return register_netdev(card->dev);
1008 }
1009
1010 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1011 {
1012 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1013 int rc = 0;
1014 enum qeth_card_states recover_flag;
1015
1016 mutex_lock(&card->discipline_mutex);
1017 mutex_lock(&card->conf_mutex);
1018 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1019 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1020
1021 recover_flag = card->state;
1022 rc = qeth_core_hardsetup_card(card);
1023 if (rc) {
1024 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1025 rc = -ENODEV;
1026 goto out_remove;
1027 }
1028 qeth_bridgeport_query_support(card);
1029 if (card->options.sbp.supported_funcs)
1030 dev_info(&card->gdev->dev,
1031 "The device represents a Bridge Capable Port\n");
1032 qeth_trace_features(card);
1033
1034 if (!card->dev && qeth_l2_setup_netdev(card)) {
1035 rc = -ENODEV;
1036 goto out_remove;
1037 }
1038
1039 if (card->info.type != QETH_CARD_TYPE_OSN)
1040 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1041
1042 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1043 if (card->info.hwtrap &&
1044 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1045 card->info.hwtrap = 0;
1046 } else
1047 card->info.hwtrap = 0;
1048
1049 qeth_l2_setup_bridgeport_attrs(card);
1050
1051 card->state = CARD_STATE_HARDSETUP;
1052 memset(&card->rx, 0, sizeof(struct qeth_rx));
1053 qeth_print_status_message(card);
1054
1055 /* softsetup */
1056 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1057
1058 rc = qeth_send_startlan(card);
1059 if (rc) {
1060 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1061 if (rc == 0xe080) {
1062 dev_warn(&card->gdev->dev,
1063 "The LAN is offline\n");
1064 card->lan_online = 0;
1065 goto contin;
1066 }
1067 rc = -ENODEV;
1068 goto out_remove;
1069 } else
1070 card->lan_online = 1;
1071
1072 contin:
1073 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1074 (card->info.type == QETH_CARD_TYPE_OSX)) {
1075 /* configure isolation level */
1076 rc = qeth_set_access_ctrl_online(card, 0);
1077 if (rc) {
1078 rc = -ENODEV;
1079 goto out_remove;
1080 }
1081 }
1082
1083 if (card->info.type != QETH_CARD_TYPE_OSN &&
1084 card->info.type != QETH_CARD_TYPE_OSM)
1085 qeth_l2_process_vlans(card);
1086
1087 netif_tx_disable(card->dev);
1088
1089 rc = qeth_init_qdio_queues(card);
1090 if (rc) {
1091 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1092 rc = -ENODEV;
1093 goto out_remove;
1094 }
1095 card->state = CARD_STATE_SOFTSETUP;
1096 if (card->lan_online)
1097 netif_carrier_on(card->dev);
1098 else
1099 netif_carrier_off(card->dev);
1100
1101 qeth_set_allowed_threads(card, 0xffffffff, 0);
1102 if (recover_flag == CARD_STATE_RECOVER) {
1103 if (recovery_mode &&
1104 card->info.type != QETH_CARD_TYPE_OSN) {
1105 __qeth_l2_open(card->dev);
1106 } else {
1107 rtnl_lock();
1108 dev_open(card->dev);
1109 rtnl_unlock();
1110 }
1111 /* this also sets saved unicast addresses */
1112 qeth_l2_set_multicast_list(card->dev);
1113 }
1114 /* let user_space know that device is online */
1115 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1116 mutex_unlock(&card->conf_mutex);
1117 mutex_unlock(&card->discipline_mutex);
1118 return 0;
1119
1120 out_remove:
1121 qeth_l2_stop_card(card, 0);
1122 ccw_device_set_offline(CARD_DDEV(card));
1123 ccw_device_set_offline(CARD_WDEV(card));
1124 ccw_device_set_offline(CARD_RDEV(card));
1125 qdio_free(CARD_DDEV(card));
1126 if (recover_flag == CARD_STATE_RECOVER)
1127 card->state = CARD_STATE_RECOVER;
1128 else
1129 card->state = CARD_STATE_DOWN;
1130 mutex_unlock(&card->conf_mutex);
1131 mutex_unlock(&card->discipline_mutex);
1132 return rc;
1133 }
1134
1135 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1136 {
1137 return __qeth_l2_set_online(gdev, 0);
1138 }
1139
1140 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1141 int recovery_mode)
1142 {
1143 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1144 int rc = 0, rc2 = 0, rc3 = 0;
1145 enum qeth_card_states recover_flag;
1146
1147 mutex_lock(&card->discipline_mutex);
1148 mutex_lock(&card->conf_mutex);
1149 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1150 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1151
1152 if (card->dev && netif_carrier_ok(card->dev))
1153 netif_carrier_off(card->dev);
1154 recover_flag = card->state;
1155 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1156 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1157 card->info.hwtrap = 1;
1158 }
1159 qeth_l2_stop_card(card, recovery_mode);
1160 rc = ccw_device_set_offline(CARD_DDEV(card));
1161 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1162 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1163 if (!rc)
1164 rc = (rc2) ? rc2 : rc3;
1165 if (rc)
1166 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1167 qdio_free(CARD_DDEV(card));
1168 if (recover_flag == CARD_STATE_UP)
1169 card->state = CARD_STATE_RECOVER;
1170 /* let user_space know that device is offline */
1171 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1172 mutex_unlock(&card->conf_mutex);
1173 mutex_unlock(&card->discipline_mutex);
1174 return 0;
1175 }
1176
1177 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1178 {
1179 return __qeth_l2_set_offline(cgdev, 0);
1180 }
1181
1182 static int qeth_l2_recover(void *ptr)
1183 {
1184 struct qeth_card *card;
1185 int rc = 0;
1186
1187 card = (struct qeth_card *) ptr;
1188 QETH_CARD_TEXT(card, 2, "recover1");
1189 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1190 return 0;
1191 QETH_CARD_TEXT(card, 2, "recover2");
1192 dev_warn(&card->gdev->dev,
1193 "A recovery process has been started for the device\n");
1194 qeth_set_recovery_task(card);
1195 __qeth_l2_set_offline(card->gdev, 1);
1196 rc = __qeth_l2_set_online(card->gdev, 1);
1197 if (!rc)
1198 dev_info(&card->gdev->dev,
1199 "Device successfully recovered!\n");
1200 else {
1201 qeth_close_dev(card);
1202 dev_warn(&card->gdev->dev, "The qeth device driver "
1203 "failed to recover an error on the device\n");
1204 }
1205 qeth_clear_recovery_task(card);
1206 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1207 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1208 return 0;
1209 }
1210
1211 static int __init qeth_l2_init(void)
1212 {
1213 pr_info("register layer 2 discipline\n");
1214 return 0;
1215 }
1216
1217 static void __exit qeth_l2_exit(void)
1218 {
1219 pr_info("unregister layer 2 discipline\n");
1220 }
1221
1222 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1223 {
1224 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1225 qeth_set_allowed_threads(card, 0, 1);
1226 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1227 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1228 qeth_qdio_clear_card(card, 0);
1229 qeth_clear_qdio_buffers(card);
1230 qdio_free(CARD_DDEV(card));
1231 }
1232
1233 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1234 {
1235 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1236
1237 if (card->dev)
1238 netif_device_detach(card->dev);
1239 qeth_set_allowed_threads(card, 0, 1);
1240 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1241 if (gdev->state == CCWGROUP_OFFLINE)
1242 return 0;
1243 if (card->state == CARD_STATE_UP) {
1244 if (card->info.hwtrap)
1245 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1246 __qeth_l2_set_offline(card->gdev, 1);
1247 } else
1248 __qeth_l2_set_offline(card->gdev, 0);
1249 return 0;
1250 }
1251
1252 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1253 {
1254 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1255 int rc = 0;
1256
1257 if (gdev->state == CCWGROUP_OFFLINE)
1258 goto out;
1259
1260 if (card->state == CARD_STATE_RECOVER) {
1261 rc = __qeth_l2_set_online(card->gdev, 1);
1262 if (rc) {
1263 rtnl_lock();
1264 dev_close(card->dev);
1265 rtnl_unlock();
1266 }
1267 } else
1268 rc = __qeth_l2_set_online(card->gdev, 0);
1269 out:
1270 qeth_set_allowed_threads(card, 0xffffffff, 0);
1271 if (card->dev)
1272 netif_device_attach(card->dev);
1273 if (rc)
1274 dev_warn(&card->gdev->dev, "The qeth device driver "
1275 "failed to recover an error on the device\n");
1276 return rc;
1277 }
1278
1279 /* Returns zero if the command is successfully "consumed" */
1280 static int qeth_l2_control_event(struct qeth_card *card,
1281 struct qeth_ipa_cmd *cmd)
1282 {
1283 switch (cmd->hdr.command) {
1284 case IPA_CMD_SETBRIDGEPORT_OSA:
1285 case IPA_CMD_SETBRIDGEPORT_IQD:
1286 if (cmd->data.sbp.hdr.command_code ==
1287 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1288 qeth_bridge_state_change(card, cmd);
1289 return 0;
1290 } else
1291 return 1;
1292 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1293 qeth_bridge_host_event(card, cmd);
1294 return 0;
1295 default:
1296 return 1;
1297 }
1298 }
1299
1300 struct qeth_discipline qeth_l2_discipline = {
1301 .start_poll = qeth_qdio_start_poll,
1302 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1303 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1304 .recover = qeth_l2_recover,
1305 .setup = qeth_l2_probe_device,
1306 .remove = qeth_l2_remove_device,
1307 .set_online = qeth_l2_set_online,
1308 .set_offline = qeth_l2_set_offline,
1309 .shutdown = qeth_l2_shutdown,
1310 .freeze = qeth_l2_pm_suspend,
1311 .thaw = qeth_l2_pm_resume,
1312 .restore = qeth_l2_pm_resume,
1313 .control_event_handler = qeth_l2_control_event,
1314 };
1315 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1316
1317 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1318 struct qeth_cmd_buffer *iob)
1319 {
1320 unsigned long flags;
1321 int rc = 0;
1322
1323 QETH_CARD_TEXT(card, 5, "osndctrd");
1324
1325 wait_event(card->wait_q,
1326 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1327 qeth_prepare_control_data(card, len, iob);
1328 QETH_CARD_TEXT(card, 6, "osnoirqp");
1329 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1330 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1331 (addr_t) iob, 0, 0);
1332 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1333 if (rc) {
1334 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1335 "ccw_device_start rc = %i\n", rc);
1336 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1337 qeth_release_buffer(iob->channel, iob);
1338 atomic_set(&card->write.irq_pending, 0);
1339 wake_up(&card->wait_q);
1340 }
1341 return rc;
1342 }
1343
1344 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1345 struct qeth_cmd_buffer *iob, int data_len)
1346 {
1347 u16 s1, s2;
1348
1349 QETH_CARD_TEXT(card, 4, "osndipa");
1350
1351 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1352 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1353 s2 = (u16)data_len;
1354 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1355 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1356 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1357 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1358 return qeth_osn_send_control_data(card, s1, iob);
1359 }
1360
1361 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1362 {
1363 struct qeth_cmd_buffer *iob;
1364 struct qeth_card *card;
1365 int rc;
1366
1367 if (!dev)
1368 return -ENODEV;
1369 card = dev->ml_priv;
1370 if (!card)
1371 return -ENODEV;
1372 QETH_CARD_TEXT(card, 2, "osnsdmc");
1373 if (!qeth_card_hw_is_reachable(card))
1374 return -ENODEV;
1375 iob = qeth_wait_for_buffer(&card->write);
1376 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1377 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1378 return rc;
1379 }
1380 EXPORT_SYMBOL(qeth_osn_assist);
1381
1382 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1383 int (*assist_cb)(struct net_device *, void *),
1384 int (*data_cb)(struct sk_buff *))
1385 {
1386 struct qeth_card *card;
1387
1388 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1389 if (*dev == NULL)
1390 return -ENODEV;
1391 card = (*dev)->ml_priv;
1392 if (!card)
1393 return -ENODEV;
1394 QETH_CARD_TEXT(card, 2, "osnreg");
1395 if ((assist_cb == NULL) || (data_cb == NULL))
1396 return -EINVAL;
1397 card->osn_info.assist_cb = assist_cb;
1398 card->osn_info.data_cb = data_cb;
1399 return 0;
1400 }
1401 EXPORT_SYMBOL(qeth_osn_register);
1402
1403 void qeth_osn_deregister(struct net_device *dev)
1404 {
1405 struct qeth_card *card;
1406
1407 if (!dev)
1408 return;
1409 card = dev->ml_priv;
1410 if (!card)
1411 return;
1412 QETH_CARD_TEXT(card, 2, "osndereg");
1413 card->osn_info.assist_cb = NULL;
1414 card->osn_info.data_cb = NULL;
1415 return;
1416 }
1417 EXPORT_SYMBOL(qeth_osn_deregister);
1418
1419 /* SETBRIDGEPORT support, async notifications */
1420
1421 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1422
1423 /**
1424 * qeth_bridge_emit_host_event() - bridgeport address change notification
1425 * @card: qeth_card structure pointer, for udev events.
1426 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1427 * and reset token and addr_lnid are unused and may be NULL.
1428 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1429 * object, 0 - addition of an object.
1430 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1431 * @token: "network token" structure identifying physical address of the port.
1432 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1433 *
1434 * This function is called when registrations and deregistrations are
1435 * reported by the hardware, and also when notifications are enabled -
1436 * for all currently registered addresses.
1437 */
1438 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1439 enum qeth_an_event_type evtype,
1440 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1441 {
1442 char str[7][32];
1443 char *env[8];
1444 int i = 0;
1445
1446 switch (evtype) {
1447 case anev_reg_unreg:
1448 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1449 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1450 ? "deregister" : "register");
1451 env[i] = str[i]; i++;
1452 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1453 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1454 addr_lnid->lnid);
1455 env[i] = str[i]; i++;
1456 }
1457 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1458 snprintf(str[i], sizeof(str[i]), "MAC=%pM6",
1459 &addr_lnid->mac);
1460 env[i] = str[i]; i++;
1461 }
1462 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1463 token->cssid, token->ssid, token->devnum);
1464 env[i] = str[i]; i++;
1465 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1466 env[i] = str[i]; i++;
1467 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1468 token->chpid);
1469 env[i] = str[i]; i++;
1470 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1471 env[i] = str[i]; i++;
1472 break;
1473 case anev_abort:
1474 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1475 env[i] = str[i]; i++;
1476 break;
1477 case anev_reset:
1478 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1479 env[i] = str[i]; i++;
1480 break;
1481 }
1482 env[i] = NULL;
1483 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1484 }
1485
1486 struct qeth_bridge_state_data {
1487 struct work_struct worker;
1488 struct qeth_card *card;
1489 struct qeth_sbp_state_change qports;
1490 };
1491
1492 static void qeth_bridge_state_change_worker(struct work_struct *work)
1493 {
1494 struct qeth_bridge_state_data *data =
1495 container_of(work, struct qeth_bridge_state_data, worker);
1496 /* We are only interested in the first entry - local port */
1497 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1498 char env_locrem[32];
1499 char env_role[32];
1500 char env_state[32];
1501 char *env[] = {
1502 env_locrem,
1503 env_role,
1504 env_state,
1505 NULL
1506 };
1507
1508 /* Role should not change by itself, but if it did, */
1509 /* information from the hardware is authoritative. */
1510 mutex_lock(&data->card->conf_mutex);
1511 data->card->options.sbp.role = entry->role;
1512 mutex_unlock(&data->card->conf_mutex);
1513
1514 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1515 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1516 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1517 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1518 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1519 "<INVALID>");
1520 snprintf(env_state, sizeof(env_state), "STATE=%s",
1521 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1522 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1523 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1524 "<INVALID>");
1525 kobject_uevent_env(&data->card->gdev->dev.kobj,
1526 KOBJ_CHANGE, env);
1527 kfree(data);
1528 }
1529
1530 static void qeth_bridge_state_change(struct qeth_card *card,
1531 struct qeth_ipa_cmd *cmd)
1532 {
1533 struct qeth_sbp_state_change *qports =
1534 &cmd->data.sbp.data.state_change;
1535 struct qeth_bridge_state_data *data;
1536 int extrasize;
1537
1538 QETH_CARD_TEXT(card, 2, "brstchng");
1539 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1540 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1541 return;
1542 }
1543 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1544 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1545 GFP_ATOMIC);
1546 if (!data) {
1547 QETH_CARD_TEXT(card, 2, "BPSalloc");
1548 return;
1549 }
1550 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1551 data->card = card;
1552 memcpy(&data->qports, qports,
1553 sizeof(struct qeth_sbp_state_change) + extrasize);
1554 queue_work(qeth_wq, &data->worker);
1555 }
1556
1557 struct qeth_bridge_host_data {
1558 struct work_struct worker;
1559 struct qeth_card *card;
1560 struct qeth_ipacmd_addr_change hostevs;
1561 };
1562
1563 static void qeth_bridge_host_event_worker(struct work_struct *work)
1564 {
1565 struct qeth_bridge_host_data *data =
1566 container_of(work, struct qeth_bridge_host_data, worker);
1567 int i;
1568
1569 if (data->hostevs.lost_event_mask) {
1570 dev_info(&data->card->gdev->dev,
1571 "Address notification from the Bridge Port stopped %s (%s)\n",
1572 data->card->dev->name,
1573 (data->hostevs.lost_event_mask == 0x01)
1574 ? "Overflow"
1575 : (data->hostevs.lost_event_mask == 0x02)
1576 ? "Bridge port state change"
1577 : "Unknown reason");
1578 mutex_lock(&data->card->conf_mutex);
1579 data->card->options.sbp.hostnotification = 0;
1580 mutex_unlock(&data->card->conf_mutex);
1581 qeth_bridge_emit_host_event(data->card, anev_abort,
1582 0, NULL, NULL);
1583 } else
1584 for (i = 0; i < data->hostevs.num_entries; i++) {
1585 struct qeth_ipacmd_addr_change_entry *entry =
1586 &data->hostevs.entry[i];
1587 qeth_bridge_emit_host_event(data->card,
1588 anev_reg_unreg,
1589 entry->change_code,
1590 &entry->token, &entry->addr_lnid);
1591 }
1592 kfree(data);
1593 }
1594
1595 static void qeth_bridge_host_event(struct qeth_card *card,
1596 struct qeth_ipa_cmd *cmd)
1597 {
1598 struct qeth_ipacmd_addr_change *hostevs =
1599 &cmd->data.addrchange;
1600 struct qeth_bridge_host_data *data;
1601 int extrasize;
1602
1603 QETH_CARD_TEXT(card, 2, "brhostev");
1604 if (cmd->hdr.return_code != 0x0000) {
1605 if (cmd->hdr.return_code == 0x0010) {
1606 if (hostevs->lost_event_mask == 0x00)
1607 hostevs->lost_event_mask = 0xff;
1608 } else {
1609 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1610 cmd->hdr.return_code);
1611 return;
1612 }
1613 }
1614 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1615 hostevs->num_entries;
1616 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1617 GFP_ATOMIC);
1618 if (!data) {
1619 QETH_CARD_TEXT(card, 2, "BPHalloc");
1620 return;
1621 }
1622 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1623 data->card = card;
1624 memcpy(&data->hostevs, hostevs,
1625 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1626 queue_work(qeth_wq, &data->worker);
1627 }
1628
1629 /* SETBRIDGEPORT support; sending commands */
1630
1631 struct _qeth_sbp_cbctl {
1632 u16 ipa_rc;
1633 u16 cmd_rc;
1634 union {
1635 u32 supported;
1636 struct {
1637 enum qeth_sbp_roles *role;
1638 enum qeth_sbp_states *state;
1639 } qports;
1640 } data;
1641 };
1642
1643 /**
1644 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1645 * @card: qeth_card structure pointer, for debug messages.
1646 * @cbctl: state structure with hardware return codes.
1647 * @setcmd: IPA command code
1648 *
1649 * Returns negative errno-compatible error indication or 0 on success.
1650 */
1651 static int qeth_bridgeport_makerc(struct qeth_card *card,
1652 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1653 {
1654 int rc;
1655 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1656
1657 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1658 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1659 switch (cbctl->cmd_rc) {
1660 case 0x0000:
1661 rc = 0;
1662 break;
1663 case 0x2B04:
1664 case 0x0004:
1665 rc = -EOPNOTSUPP;
1666 break;
1667 case 0x2B0C:
1668 case 0x000C: /* Not configured as bridge Port */
1669 rc = -ENODEV; /* maybe not the best code here? */
1670 dev_err(&card->gdev->dev,
1671 "The device is not configured as a Bridge Port\n");
1672 break;
1673 case 0x2B14:
1674 case 0x0014: /* Another device is Primary */
1675 switch (setcmd) {
1676 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1677 rc = -EEXIST;
1678 dev_err(&card->gdev->dev,
1679 "The LAN already has a primary Bridge Port\n");
1680 break;
1681 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1682 rc = -EBUSY;
1683 dev_err(&card->gdev->dev,
1684 "The device is already a primary Bridge Port\n");
1685 break;
1686 default:
1687 rc = -EIO;
1688 }
1689 break;
1690 case 0x2B18:
1691 case 0x0018: /* This device is currently Secondary */
1692 rc = -EBUSY;
1693 dev_err(&card->gdev->dev,
1694 "The device is already a secondary Bridge Port\n");
1695 break;
1696 case 0x2B1C:
1697 case 0x001C: /* Limit for Secondary devices reached */
1698 rc = -EEXIST;
1699 dev_err(&card->gdev->dev,
1700 "The LAN cannot have more secondary Bridge Ports\n");
1701 break;
1702 case 0x2B24:
1703 case 0x0024: /* This device is currently Primary */
1704 rc = -EBUSY;
1705 dev_err(&card->gdev->dev,
1706 "The device is already a primary Bridge Port\n");
1707 break;
1708 case 0x2B20:
1709 case 0x0020: /* Not authorized by zManager */
1710 rc = -EACCES;
1711 dev_err(&card->gdev->dev,
1712 "The device is not authorized to be a Bridge Port\n");
1713 break;
1714 default:
1715 rc = -EIO;
1716 }
1717 else
1718 switch (cbctl->ipa_rc) {
1719 case IPA_RC_NOTSUPP:
1720 rc = -EOPNOTSUPP;
1721 break;
1722 case IPA_RC_UNSUPPORTED_COMMAND:
1723 rc = -EOPNOTSUPP;
1724 break;
1725 default:
1726 rc = -EIO;
1727 }
1728
1729 if (rc) {
1730 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1731 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1732 }
1733 return rc;
1734 }
1735
1736 static inline int ipa_cmd_sbp(struct qeth_card *card)
1737 {
1738 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1739 IPA_CMD_SETBRIDGEPORT_IQD :
1740 IPA_CMD_SETBRIDGEPORT_OSA;
1741 }
1742
1743 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1744 struct qeth_reply *reply, unsigned long data)
1745 {
1746 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1747 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1748 QETH_CARD_TEXT(card, 2, "brqsupcb");
1749 cbctl->ipa_rc = cmd->hdr.return_code;
1750 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1751 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1752 cbctl->data.supported =
1753 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1754 } else {
1755 cbctl->data.supported = 0;
1756 }
1757 return 0;
1758 }
1759
1760 /**
1761 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1762 * @card: qeth_card structure pointer.
1763 *
1764 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1765 * strucutre: card->options.sbp.supported_funcs.
1766 */
1767 static void qeth_bridgeport_query_support(struct qeth_card *card)
1768 {
1769 struct qeth_cmd_buffer *iob;
1770 struct qeth_ipa_cmd *cmd;
1771 struct _qeth_sbp_cbctl cbctl;
1772
1773 QETH_CARD_TEXT(card, 2, "brqsuppo");
1774 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1775 if (!iob)
1776 return;
1777 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1778 cmd->data.sbp.hdr.cmdlength =
1779 sizeof(struct qeth_ipacmd_sbp_hdr) +
1780 sizeof(struct qeth_sbp_query_cmds_supp);
1781 cmd->data.sbp.hdr.command_code =
1782 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1783 cmd->data.sbp.hdr.used_total = 1;
1784 cmd->data.sbp.hdr.seq_no = 1;
1785 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1786 (void *)&cbctl) ||
1787 qeth_bridgeport_makerc(card, &cbctl,
1788 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1789 /* non-zero makerc signifies failure, and produce messages */
1790 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1791 return;
1792 }
1793 card->options.sbp.supported_funcs = cbctl.data.supported;
1794 }
1795
1796 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1797 struct qeth_reply *reply, unsigned long data)
1798 {
1799 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1800 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1801 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1802
1803 QETH_CARD_TEXT(card, 2, "brqprtcb");
1804 cbctl->ipa_rc = cmd->hdr.return_code;
1805 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1806 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1807 return 0;
1808 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1809 cbctl->cmd_rc = 0xffff;
1810 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1811 return 0;
1812 }
1813 /* first entry contains the state of the local port */
1814 if (qports->num_entries > 0) {
1815 if (cbctl->data.qports.role)
1816 *cbctl->data.qports.role = qports->entry[0].role;
1817 if (cbctl->data.qports.state)
1818 *cbctl->data.qports.state = qports->entry[0].state;
1819 }
1820 return 0;
1821 }
1822
1823 /**
1824 * qeth_bridgeport_query_ports() - query local bridgeport status.
1825 * @card: qeth_card structure pointer.
1826 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1827 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1828 *
1829 * Returns negative errno-compatible error indication or 0 on success.
1830 *
1831 * 'role' and 'state' are not updated in case of hardware operation failure.
1832 */
1833 int qeth_bridgeport_query_ports(struct qeth_card *card,
1834 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1835 {
1836 int rc = 0;
1837 struct qeth_cmd_buffer *iob;
1838 struct qeth_ipa_cmd *cmd;
1839 struct _qeth_sbp_cbctl cbctl = {
1840 .data = {
1841 .qports = {
1842 .role = role,
1843 .state = state,
1844 },
1845 },
1846 };
1847
1848 QETH_CARD_TEXT(card, 2, "brqports");
1849 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1850 return -EOPNOTSUPP;
1851 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1852 if (!iob)
1853 return -ENOMEM;
1854 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1855 cmd->data.sbp.hdr.cmdlength =
1856 sizeof(struct qeth_ipacmd_sbp_hdr);
1857 cmd->data.sbp.hdr.command_code =
1858 IPA_SBP_QUERY_BRIDGE_PORTS;
1859 cmd->data.sbp.hdr.used_total = 1;
1860 cmd->data.sbp.hdr.seq_no = 1;
1861 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1862 (void *)&cbctl);
1863 if (rc < 0)
1864 return rc;
1865 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1866 }
1867 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1868
1869 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1870 struct qeth_reply *reply, unsigned long data)
1871 {
1872 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1873 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1874 QETH_CARD_TEXT(card, 2, "brsetrcb");
1875 cbctl->ipa_rc = cmd->hdr.return_code;
1876 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1877 return 0;
1878 }
1879
1880 /**
1881 * qeth_bridgeport_setrole() - Assign primary role to the port.
1882 * @card: qeth_card structure pointer.
1883 * @role: Role to assign.
1884 *
1885 * Returns negative errno-compatible error indication or 0 on success.
1886 */
1887 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1888 {
1889 int rc = 0;
1890 int cmdlength;
1891 struct qeth_cmd_buffer *iob;
1892 struct qeth_ipa_cmd *cmd;
1893 struct _qeth_sbp_cbctl cbctl;
1894 enum qeth_ipa_sbp_cmd setcmd;
1895
1896 QETH_CARD_TEXT(card, 2, "brsetrol");
1897 switch (role) {
1898 case QETH_SBP_ROLE_NONE:
1899 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1900 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1901 sizeof(struct qeth_sbp_reset_role);
1902 break;
1903 case QETH_SBP_ROLE_PRIMARY:
1904 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1905 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1906 sizeof(struct qeth_sbp_set_primary);
1907 break;
1908 case QETH_SBP_ROLE_SECONDARY:
1909 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1910 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1911 sizeof(struct qeth_sbp_set_secondary);
1912 break;
1913 default:
1914 return -EINVAL;
1915 }
1916 if (!(card->options.sbp.supported_funcs & setcmd))
1917 return -EOPNOTSUPP;
1918 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1919 if (!iob)
1920 return -ENOMEM;
1921 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1922 cmd->data.sbp.hdr.cmdlength = cmdlength;
1923 cmd->data.sbp.hdr.command_code = setcmd;
1924 cmd->data.sbp.hdr.used_total = 1;
1925 cmd->data.sbp.hdr.seq_no = 1;
1926 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1927 (void *)&cbctl);
1928 if (rc < 0)
1929 return rc;
1930 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
1931 }
1932
1933 /**
1934 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1935 * @card: qeth_card structure pointer, for debug messages.
1936 *
1937 * Returns negative errno-compatible error indication or 0 on success.
1938 */
1939 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1940 {
1941 int rc;
1942
1943 if (pnso_rc == 0)
1944 switch (response) {
1945 case 0x0001:
1946 rc = 0;
1947 break;
1948 case 0x0004:
1949 case 0x0100:
1950 case 0x0106:
1951 rc = -EOPNOTSUPP;
1952 dev_err(&card->gdev->dev,
1953 "Setting address notification failed\n");
1954 break;
1955 case 0x0107:
1956 rc = -EAGAIN;
1957 break;
1958 default:
1959 rc = -EIO;
1960 }
1961 else
1962 rc = -EIO;
1963
1964 if (rc) {
1965 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1966 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1967 }
1968 return rc;
1969 }
1970
1971 static void qeth_bridgeport_an_set_cb(void *priv,
1972 enum qdio_brinfo_entry_type type, void *entry)
1973 {
1974 struct qeth_card *card = (struct qeth_card *)priv;
1975 struct qdio_brinfo_entry_l2 *l2entry;
1976 u8 code;
1977
1978 if (type != l2_addr_lnid) {
1979 WARN_ON_ONCE(1);
1980 return;
1981 }
1982
1983 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1984 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1985 if (l2entry->addr_lnid.lnid)
1986 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1987 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1988 (struct net_if_token *)&l2entry->nit,
1989 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1990 }
1991
1992 /**
1993 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1994 * @card: qeth_card structure pointer.
1995 * @enable: 0 - disable, non-zero - enable notifications
1996 *
1997 * Returns negative errno-compatible error indication or 0 on success.
1998 *
1999 * On enable, emits a series of address notifications udev events for all
2000 * currently registered hosts.
2001 */
2002 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2003 {
2004 int rc;
2005 u16 response;
2006 struct ccw_device *ddev;
2007 struct subchannel_id schid;
2008
2009 if (!card)
2010 return -EINVAL;
2011 if (!card->options.sbp.supported_funcs)
2012 return -EOPNOTSUPP;
2013 ddev = CARD_DDEV(card);
2014 ccw_device_get_schid(ddev, &schid);
2015
2016 if (enable) {
2017 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2018 rc = qdio_pnso_brinfo(schid, 1, &response,
2019 qeth_bridgeport_an_set_cb, card);
2020 } else
2021 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2022 return qeth_anset_makerc(card, rc, response);
2023 }
2024 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2025
2026 module_init(qeth_l2_init);
2027 module_exit(qeth_l2_exit);
2028 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2029 MODULE_DESCRIPTION("qeth layer 2 discipline");
2030 MODULE_LICENSE("GPL");
Linux with added FPC-III support