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Merge tag 'iio-fixes-for-3.19a' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / s390 / net / qeth_l2_main.c
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 int (*reply_cb) (struct qeth_card *,
32 struct qeth_reply*,
33 unsigned long));
34 static void qeth_l2_set_multicast_list(struct net_device *);
35 static int qeth_l2_recover(void *);
36 static void qeth_bridgeport_query_support(struct qeth_card *card);
37 static void qeth_bridge_state_change(struct qeth_card *card,
38 struct qeth_ipa_cmd *cmd);
39 static void qeth_bridge_host_event(struct qeth_card *card,
40 struct qeth_ipa_cmd *cmd);
41
42 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
43 {
44 struct qeth_card *card = dev->ml_priv;
45 struct mii_ioctl_data *mii_data;
46 int rc = 0;
47
48 if (!card)
49 return -ENODEV;
50
51 if ((card->state != CARD_STATE_UP) &&
52 (card->state != CARD_STATE_SOFTSETUP))
53 return -ENODEV;
54
55 if (card->info.type == QETH_CARD_TYPE_OSN)
56 return -EPERM;
57
58 switch (cmd) {
59 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
60 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
61 break;
62 case SIOC_QETH_GET_CARD_TYPE:
63 if ((card->info.type == QETH_CARD_TYPE_OSD ||
64 card->info.type == QETH_CARD_TYPE_OSM ||
65 card->info.type == QETH_CARD_TYPE_OSX) &&
66 !card->info.guestlan)
67 return 1;
68 return 0;
69 break;
70 case SIOCGMIIPHY:
71 mii_data = if_mii(rq);
72 mii_data->phy_id = 0;
73 break;
74 case SIOCGMIIREG:
75 mii_data = if_mii(rq);
76 if (mii_data->phy_id != 0)
77 rc = -EINVAL;
78 else
79 mii_data->val_out = qeth_mdio_read(dev,
80 mii_data->phy_id, mii_data->reg_num);
81 break;
82 case SIOC_QETH_QUERY_OAT:
83 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
84 break;
85 default:
86 rc = -EOPNOTSUPP;
87 }
88 if (rc)
89 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
90 return rc;
91 }
92
93 static int qeth_l2_verify_dev(struct net_device *dev)
94 {
95 struct qeth_card *card;
96 unsigned long flags;
97 int rc = 0;
98
99 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
100 list_for_each_entry(card, &qeth_core_card_list.list, list) {
101 if (card->dev == dev) {
102 rc = QETH_REAL_CARD;
103 break;
104 }
105 }
106 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
107
108 return rc;
109 }
110
111 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
112 {
113 struct qeth_card *card;
114 struct net_device *ndev;
115 __u16 temp_dev_no;
116 unsigned long flags;
117 struct ccw_dev_id read_devid;
118
119 ndev = NULL;
120 memcpy(&temp_dev_no, read_dev_no, 2);
121 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
122 list_for_each_entry(card, &qeth_core_card_list.list, list) {
123 ccw_device_get_id(CARD_RDEV(card), &read_devid);
124 if (read_devid.devno == temp_dev_no) {
125 ndev = card->dev;
126 break;
127 }
128 }
129 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
130 return ndev;
131 }
132
133 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
134 struct qeth_reply *reply,
135 unsigned long data)
136 {
137 struct qeth_ipa_cmd *cmd;
138 __u8 *mac;
139
140 QETH_CARD_TEXT(card, 2, "L2Sgmacb");
141 cmd = (struct qeth_ipa_cmd *) data;
142 mac = &cmd->data.setdelmac.mac[0];
143 /* MAC already registered, needed in couple/uncouple case */
144 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
145 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
146 mac, QETH_CARD_IFNAME(card));
147 cmd->hdr.return_code = 0;
148 }
149 if (cmd->hdr.return_code)
150 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
151 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
152 return 0;
153 }
154
155 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
156 {
157 QETH_CARD_TEXT(card, 2, "L2Sgmac");
158 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
159 qeth_l2_send_setgroupmac_cb);
160 }
161
162 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
163 struct qeth_reply *reply,
164 unsigned long data)
165 {
166 struct qeth_ipa_cmd *cmd;
167 __u8 *mac;
168
169 QETH_CARD_TEXT(card, 2, "L2Dgmacb");
170 cmd = (struct qeth_ipa_cmd *) data;
171 mac = &cmd->data.setdelmac.mac[0];
172 if (cmd->hdr.return_code)
173 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
174 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
175 return 0;
176 }
177
178 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
179 {
180 QETH_CARD_TEXT(card, 2, "L2Dgmac");
181 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
182 qeth_l2_send_delgroupmac_cb);
183 }
184
185 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
186 {
187 struct qeth_mc_mac *mc;
188 int rc;
189
190 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
191
192 if (!mc)
193 return;
194
195 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
196 mc->mc_addrlen = OSA_ADDR_LEN;
197 mc->is_vmac = vmac;
198
199 if (vmac) {
200 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
201 NULL);
202 } else {
203 rc = qeth_l2_send_setgroupmac(card, mac);
204 }
205
206 if (!rc)
207 list_add_tail(&mc->list, &card->mc_list);
208 else
209 kfree(mc);
210 }
211
212 static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
213 {
214 struct qeth_mc_mac *mc, *tmp;
215
216 spin_lock_bh(&card->mclock);
217 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
218 if (del) {
219 if (mc->is_vmac)
220 qeth_l2_send_setdelmac(card, mc->mc_addr,
221 IPA_CMD_DELVMAC, NULL);
222 else
223 qeth_l2_send_delgroupmac(card, mc->mc_addr);
224 }
225 list_del(&mc->list);
226 kfree(mc);
227 }
228 spin_unlock_bh(&card->mclock);
229 }
230
231 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
232 struct sk_buff *skb)
233 {
234 if (card->info.type == QETH_CARD_TYPE_OSN)
235 return RTN_UNSPEC;
236 if (is_broadcast_ether_addr(skb->data))
237 return RTN_BROADCAST;
238 if (is_multicast_ether_addr(skb->data))
239 return RTN_MULTICAST;
240 return RTN_UNSPEC;
241 }
242
243 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
244 struct sk_buff *skb, int cast_type)
245 {
246 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
247
248 memset(hdr, 0, sizeof(struct qeth_hdr));
249 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
250
251 /* set byte byte 3 to casting flags */
252 if (cast_type == RTN_MULTICAST)
253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
254 else if (cast_type == RTN_BROADCAST)
255 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
256 else
257 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
258
259 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
260 /* VSWITCH relies on the VLAN
261 * information to be present in
262 * the QDIO header */
263 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
264 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
265 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
266 }
267 }
268
269 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
270 struct qeth_reply *reply, unsigned long data)
271 {
272 struct qeth_ipa_cmd *cmd;
273
274 QETH_CARD_TEXT(card, 2, "L2sdvcb");
275 cmd = (struct qeth_ipa_cmd *) data;
276 if (cmd->hdr.return_code) {
277 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
278 "Continuing\n", cmd->data.setdelvlan.vlan_id,
279 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
280 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
281 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
282 }
283 return 0;
284 }
285
286 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
287 enum qeth_ipa_cmds ipacmd)
288 {
289 struct qeth_ipa_cmd *cmd;
290 struct qeth_cmd_buffer *iob;
291
292 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
293 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
294 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
295 cmd->data.setdelvlan.vlan_id = i;
296 return qeth_send_ipa_cmd(card, iob,
297 qeth_l2_send_setdelvlan_cb, NULL);
298 }
299
300 static void qeth_l2_process_vlans(struct qeth_card *card)
301 {
302 struct qeth_vlan_vid *id;
303 QETH_CARD_TEXT(card, 3, "L2prcvln");
304 spin_lock_bh(&card->vlanlock);
305 list_for_each_entry(id, &card->vid_list, list) {
306 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
307 }
308 spin_unlock_bh(&card->vlanlock);
309 }
310
311 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
312 __be16 proto, u16 vid)
313 {
314 struct qeth_card *card = dev->ml_priv;
315 struct qeth_vlan_vid *id;
316
317 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
318 if (!vid)
319 return 0;
320 if (card->info.type == QETH_CARD_TYPE_OSM) {
321 QETH_CARD_TEXT(card, 3, "aidOSM");
322 return 0;
323 }
324 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
325 QETH_CARD_TEXT(card, 3, "aidREC");
326 return 0;
327 }
328 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
329 if (id) {
330 id->vid = vid;
331 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
332 spin_lock_bh(&card->vlanlock);
333 list_add_tail(&id->list, &card->vid_list);
334 spin_unlock_bh(&card->vlanlock);
335 } else {
336 return -ENOMEM;
337 }
338 return 0;
339 }
340
341 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
342 __be16 proto, u16 vid)
343 {
344 struct qeth_vlan_vid *id, *tmpid = NULL;
345 struct qeth_card *card = dev->ml_priv;
346
347 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
348 if (card->info.type == QETH_CARD_TYPE_OSM) {
349 QETH_CARD_TEXT(card, 3, "kidOSM");
350 return 0;
351 }
352 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
353 QETH_CARD_TEXT(card, 3, "kidREC");
354 return 0;
355 }
356 spin_lock_bh(&card->vlanlock);
357 list_for_each_entry(id, &card->vid_list, list) {
358 if (id->vid == vid) {
359 list_del(&id->list);
360 tmpid = id;
361 break;
362 }
363 }
364 spin_unlock_bh(&card->vlanlock);
365 if (tmpid) {
366 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
367 kfree(tmpid);
368 }
369 qeth_l2_set_multicast_list(card->dev);
370 return 0;
371 }
372
373 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
374 {
375 int rc = 0;
376
377 QETH_DBF_TEXT(SETUP , 2, "stopcard");
378 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
379
380 qeth_set_allowed_threads(card, 0, 1);
381 if (card->read.state == CH_STATE_UP &&
382 card->write.state == CH_STATE_UP &&
383 (card->state == CARD_STATE_UP)) {
384 if (recovery_mode &&
385 card->info.type != QETH_CARD_TYPE_OSN) {
386 qeth_l2_stop(card->dev);
387 } else {
388 rtnl_lock();
389 dev_close(card->dev);
390 rtnl_unlock();
391 }
392 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
393 card->state = CARD_STATE_SOFTSETUP;
394 }
395 if (card->state == CARD_STATE_SOFTSETUP) {
396 qeth_l2_del_all_mc(card, 0);
397 qeth_clear_ipacmd_list(card);
398 card->state = CARD_STATE_HARDSETUP;
399 }
400 if (card->state == CARD_STATE_HARDSETUP) {
401 qeth_qdio_clear_card(card, 0);
402 qeth_clear_qdio_buffers(card);
403 qeth_clear_working_pool_list(card);
404 card->state = CARD_STATE_DOWN;
405 }
406 if (card->state == CARD_STATE_DOWN) {
407 qeth_clear_cmd_buffers(&card->read);
408 qeth_clear_cmd_buffers(&card->write);
409 }
410 return rc;
411 }
412
413 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
414 int budget, int *done)
415 {
416 int work_done = 0;
417 struct sk_buff *skb;
418 struct qeth_hdr *hdr;
419 unsigned int len;
420
421 *done = 0;
422 WARN_ON_ONCE(!budget);
423 while (budget) {
424 skb = qeth_core_get_next_skb(card,
425 &card->qdio.in_q->bufs[card->rx.b_index],
426 &card->rx.b_element, &card->rx.e_offset, &hdr);
427 if (!skb) {
428 *done = 1;
429 break;
430 }
431 skb->dev = card->dev;
432 switch (hdr->hdr.l2.id) {
433 case QETH_HEADER_TYPE_LAYER2:
434 skb->pkt_type = PACKET_HOST;
435 skb->protocol = eth_type_trans(skb, skb->dev);
436 skb->ip_summed = CHECKSUM_NONE;
437 if (skb->protocol == htons(ETH_P_802_2))
438 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
439 len = skb->len;
440 netif_receive_skb(skb);
441 break;
442 case QETH_HEADER_TYPE_OSN:
443 if (card->info.type == QETH_CARD_TYPE_OSN) {
444 skb_push(skb, sizeof(struct qeth_hdr));
445 skb_copy_to_linear_data(skb, hdr,
446 sizeof(struct qeth_hdr));
447 len = skb->len;
448 card->osn_info.data_cb(skb);
449 break;
450 }
451 /* else unknown */
452 default:
453 dev_kfree_skb_any(skb);
454 QETH_CARD_TEXT(card, 3, "inbunkno");
455 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
456 continue;
457 }
458 work_done++;
459 budget--;
460 card->stats.rx_packets++;
461 card->stats.rx_bytes += len;
462 }
463 return work_done;
464 }
465
466 static int qeth_l2_poll(struct napi_struct *napi, int budget)
467 {
468 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
469 int work_done = 0;
470 struct qeth_qdio_buffer *buffer;
471 int done;
472 int new_budget = budget;
473
474 if (card->options.performance_stats) {
475 card->perf_stats.inbound_cnt++;
476 card->perf_stats.inbound_start_time = qeth_get_micros();
477 }
478
479 while (1) {
480 if (!card->rx.b_count) {
481 card->rx.qdio_err = 0;
482 card->rx.b_count = qdio_get_next_buffers(
483 card->data.ccwdev, 0, &card->rx.b_index,
484 &card->rx.qdio_err);
485 if (card->rx.b_count <= 0) {
486 card->rx.b_count = 0;
487 break;
488 }
489 card->rx.b_element =
490 &card->qdio.in_q->bufs[card->rx.b_index]
491 .buffer->element[0];
492 card->rx.e_offset = 0;
493 }
494
495 while (card->rx.b_count) {
496 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
497 if (!(card->rx.qdio_err &&
498 qeth_check_qdio_errors(card, buffer->buffer,
499 card->rx.qdio_err, "qinerr")))
500 work_done += qeth_l2_process_inbound_buffer(
501 card, new_budget, &done);
502 else
503 done = 1;
504
505 if (done) {
506 if (card->options.performance_stats)
507 card->perf_stats.bufs_rec++;
508 qeth_put_buffer_pool_entry(card,
509 buffer->pool_entry);
510 qeth_queue_input_buffer(card, card->rx.b_index);
511 card->rx.b_count--;
512 if (card->rx.b_count) {
513 card->rx.b_index =
514 (card->rx.b_index + 1) %
515 QDIO_MAX_BUFFERS_PER_Q;
516 card->rx.b_element =
517 &card->qdio.in_q
518 ->bufs[card->rx.b_index]
519 .buffer->element[0];
520 card->rx.e_offset = 0;
521 }
522 }
523
524 if (work_done >= budget)
525 goto out;
526 else
527 new_budget = budget - work_done;
528 }
529 }
530
531 napi_complete(napi);
532 if (qdio_start_irq(card->data.ccwdev, 0))
533 napi_schedule(&card->napi);
534 out:
535 if (card->options.performance_stats)
536 card->perf_stats.inbound_time += qeth_get_micros() -
537 card->perf_stats.inbound_start_time;
538 return work_done;
539 }
540
541 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
542 enum qeth_ipa_cmds ipacmd,
543 int (*reply_cb) (struct qeth_card *,
544 struct qeth_reply*,
545 unsigned long))
546 {
547 struct qeth_ipa_cmd *cmd;
548 struct qeth_cmd_buffer *iob;
549
550 QETH_CARD_TEXT(card, 2, "L2sdmac");
551 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
552 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
553 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
554 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
555 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
556 }
557
558 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
559 struct qeth_reply *reply,
560 unsigned long data)
561 {
562 struct qeth_ipa_cmd *cmd;
563
564 QETH_CARD_TEXT(card, 2, "L2Smaccb");
565 cmd = (struct qeth_ipa_cmd *) data;
566 if (cmd->hdr.return_code) {
567 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
568 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
569 switch (cmd->hdr.return_code) {
570 case IPA_RC_L2_DUP_MAC:
571 case IPA_RC_L2_DUP_LAYER3_MAC:
572 dev_warn(&card->gdev->dev,
573 "MAC address %pM already exists\n",
574 cmd->data.setdelmac.mac);
575 break;
576 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
577 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
578 dev_warn(&card->gdev->dev,
579 "MAC address %pM is not authorized\n",
580 cmd->data.setdelmac.mac);
581 break;
582 default:
583 break;
584 }
585 } else {
586 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
587 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
588 OSA_ADDR_LEN);
589 dev_info(&card->gdev->dev,
590 "MAC address %pM successfully registered on device %s\n",
591 card->dev->dev_addr, card->dev->name);
592 }
593 return 0;
594 }
595
596 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
597 {
598 QETH_CARD_TEXT(card, 2, "L2Setmac");
599 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
600 qeth_l2_send_setmac_cb);
601 }
602
603 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
604 struct qeth_reply *reply,
605 unsigned long data)
606 {
607 struct qeth_ipa_cmd *cmd;
608
609 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
610 cmd = (struct qeth_ipa_cmd *) data;
611 if (cmd->hdr.return_code) {
612 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
613 return 0;
614 }
615 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
616
617 return 0;
618 }
619
620 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
621 {
622 QETH_CARD_TEXT(card, 2, "L2Delmac");
623 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
624 return 0;
625 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
626 qeth_l2_send_delmac_cb);
627 }
628
629 static int qeth_l2_request_initial_mac(struct qeth_card *card)
630 {
631 int rc = 0;
632 char vendor_pre[] = {0x02, 0x00, 0x00};
633
634 QETH_DBF_TEXT(SETUP, 2, "doL2init");
635 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
636
637 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
638 rc = qeth_query_setadapterparms(card);
639 if (rc) {
640 QETH_DBF_MESSAGE(2, "could not query adapter "
641 "parameters on device %s: x%x\n",
642 CARD_BUS_ID(card), rc);
643 }
644 }
645
646 if (card->info.type == QETH_CARD_TYPE_IQD ||
647 card->info.type == QETH_CARD_TYPE_OSM ||
648 card->info.type == QETH_CARD_TYPE_OSX ||
649 card->info.guestlan) {
650 rc = qeth_setadpparms_change_macaddr(card);
651 if (rc) {
652 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
653 "device %s: x%x\n", CARD_BUS_ID(card), rc);
654 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
655 return rc;
656 }
657 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
658 } else {
659 eth_random_addr(card->dev->dev_addr);
660 memcpy(card->dev->dev_addr, vendor_pre, 3);
661 }
662 return 0;
663 }
664
665 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
666 {
667 struct sockaddr *addr = p;
668 struct qeth_card *card = dev->ml_priv;
669 int rc = 0;
670
671 QETH_CARD_TEXT(card, 3, "setmac");
672
673 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
674 QETH_CARD_TEXT(card, 3, "setmcINV");
675 return -EOPNOTSUPP;
676 }
677
678 if (card->info.type == QETH_CARD_TYPE_OSN ||
679 card->info.type == QETH_CARD_TYPE_OSM ||
680 card->info.type == QETH_CARD_TYPE_OSX) {
681 QETH_CARD_TEXT(card, 3, "setmcTYP");
682 return -EOPNOTSUPP;
683 }
684 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
685 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
686 QETH_CARD_TEXT(card, 3, "setmcREC");
687 return -ERESTARTSYS;
688 }
689 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
690 if (!rc || (rc == IPA_RC_L2_MAC_NOT_FOUND))
691 rc = qeth_l2_send_setmac(card, addr->sa_data);
692 return rc ? -EINVAL : 0;
693 }
694
695 static void qeth_l2_set_multicast_list(struct net_device *dev)
696 {
697 struct qeth_card *card = dev->ml_priv;
698 struct netdev_hw_addr *ha;
699
700 if (card->info.type == QETH_CARD_TYPE_OSN)
701 return ;
702
703 QETH_CARD_TEXT(card, 3, "setmulti");
704 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
705 (card->state != CARD_STATE_UP))
706 return;
707 qeth_l2_del_all_mc(card, 1);
708 spin_lock_bh(&card->mclock);
709 netdev_for_each_mc_addr(ha, dev)
710 qeth_l2_add_mc(card, ha->addr, 0);
711
712 netdev_for_each_uc_addr(ha, dev)
713 qeth_l2_add_mc(card, ha->addr, 1);
714
715 spin_unlock_bh(&card->mclock);
716 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
717 return;
718 qeth_setadp_promisc_mode(card);
719 }
720
721 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
722 {
723 int rc;
724 struct qeth_hdr *hdr = NULL;
725 int elements = 0;
726 struct qeth_card *card = dev->ml_priv;
727 struct sk_buff *new_skb = skb;
728 int cast_type = qeth_l2_get_cast_type(card, skb);
729 struct qeth_qdio_out_q *queue;
730 int tx_bytes = skb->len;
731 int data_offset = -1;
732 int elements_needed = 0;
733 int hd_len = 0;
734
735 if (card->qdio.do_prio_queueing || (cast_type &&
736 card->info.is_multicast_different))
737 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
738 qeth_get_ip_version(skb), cast_type)];
739 else
740 queue = card->qdio.out_qs[card->qdio.default_out_queue];
741
742 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
743 card->stats.tx_carrier_errors++;
744 goto tx_drop;
745 }
746
747 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
748 (skb->protocol == htons(ETH_P_IPV6)))
749 goto tx_drop;
750
751 if (card->options.performance_stats) {
752 card->perf_stats.outbound_cnt++;
753 card->perf_stats.outbound_start_time = qeth_get_micros();
754 }
755 netif_stop_queue(dev);
756
757 if (card->info.type == QETH_CARD_TYPE_OSN)
758 hdr = (struct qeth_hdr *)skb->data;
759 else {
760 if (card->info.type == QETH_CARD_TYPE_IQD) {
761 new_skb = skb;
762 data_offset = ETH_HLEN;
763 hd_len = ETH_HLEN;
764 hdr = kmem_cache_alloc(qeth_core_header_cache,
765 GFP_ATOMIC);
766 if (!hdr)
767 goto tx_drop;
768 elements_needed++;
769 skb_reset_mac_header(new_skb);
770 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
771 hdr->hdr.l2.pkt_length = new_skb->len;
772 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
773 skb_mac_header(new_skb), ETH_HLEN);
774 } else {
775 /* create a clone with writeable headroom */
776 new_skb = skb_realloc_headroom(skb,
777 sizeof(struct qeth_hdr));
778 if (!new_skb)
779 goto tx_drop;
780 hdr = (struct qeth_hdr *)skb_push(new_skb,
781 sizeof(struct qeth_hdr));
782 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
783 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
784 }
785 }
786
787 elements = qeth_get_elements_no(card, new_skb, elements_needed);
788 if (!elements) {
789 if (data_offset >= 0)
790 kmem_cache_free(qeth_core_header_cache, hdr);
791 goto tx_drop;
792 }
793
794 if (card->info.type != QETH_CARD_TYPE_IQD) {
795 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
796 sizeof(struct qeth_hdr_layer2)))
797 goto tx_drop;
798 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
799 elements);
800 } else
801 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
802 elements, data_offset, hd_len);
803 if (!rc) {
804 card->stats.tx_packets++;
805 card->stats.tx_bytes += tx_bytes;
806 if (new_skb != skb)
807 dev_kfree_skb_any(skb);
808 rc = NETDEV_TX_OK;
809 } else {
810 if (data_offset >= 0)
811 kmem_cache_free(qeth_core_header_cache, hdr);
812
813 if (rc == -EBUSY) {
814 if (new_skb != skb)
815 dev_kfree_skb_any(new_skb);
816 return NETDEV_TX_BUSY;
817 } else
818 goto tx_drop;
819 }
820
821 netif_wake_queue(dev);
822 if (card->options.performance_stats)
823 card->perf_stats.outbound_time += qeth_get_micros() -
824 card->perf_stats.outbound_start_time;
825 return rc;
826
827 tx_drop:
828 card->stats.tx_dropped++;
829 card->stats.tx_errors++;
830 if ((new_skb != skb) && new_skb)
831 dev_kfree_skb_any(new_skb);
832 dev_kfree_skb_any(skb);
833 netif_wake_queue(dev);
834 return NETDEV_TX_OK;
835 }
836
837 static int __qeth_l2_open(struct net_device *dev)
838 {
839 struct qeth_card *card = dev->ml_priv;
840 int rc = 0;
841
842 QETH_CARD_TEXT(card, 4, "qethopen");
843 if (card->state == CARD_STATE_UP)
844 return rc;
845 if (card->state != CARD_STATE_SOFTSETUP)
846 return -ENODEV;
847
848 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
849 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
850 QETH_CARD_TEXT(card, 4, "nomacadr");
851 return -EPERM;
852 }
853 card->data.state = CH_STATE_UP;
854 card->state = CARD_STATE_UP;
855 netif_start_queue(dev);
856
857 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
858 napi_enable(&card->napi);
859 napi_schedule(&card->napi);
860 } else
861 rc = -EIO;
862 return rc;
863 }
864
865 static int qeth_l2_open(struct net_device *dev)
866 {
867 struct qeth_card *card = dev->ml_priv;
868
869 QETH_CARD_TEXT(card, 5, "qethope_");
870 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
871 QETH_CARD_TEXT(card, 3, "openREC");
872 return -ERESTARTSYS;
873 }
874 return __qeth_l2_open(dev);
875 }
876
877 static int qeth_l2_stop(struct net_device *dev)
878 {
879 struct qeth_card *card = dev->ml_priv;
880
881 QETH_CARD_TEXT(card, 4, "qethstop");
882 netif_tx_disable(dev);
883 if (card->state == CARD_STATE_UP) {
884 card->state = CARD_STATE_SOFTSETUP;
885 napi_disable(&card->napi);
886 }
887 return 0;
888 }
889
890 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
891 {
892 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
893
894 qeth_l2_create_device_attributes(&gdev->dev);
895 INIT_LIST_HEAD(&card->vid_list);
896 INIT_LIST_HEAD(&card->mc_list);
897 card->options.layer2 = 1;
898 card->info.hwtrap = 0;
899 return 0;
900 }
901
902 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
903 {
904 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
905
906 qeth_l2_remove_device_attributes(&cgdev->dev);
907 qeth_set_allowed_threads(card, 0, 1);
908 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
909
910 if (cgdev->state == CCWGROUP_ONLINE)
911 qeth_l2_set_offline(cgdev);
912
913 if (card->dev) {
914 unregister_netdev(card->dev);
915 card->dev = NULL;
916 }
917 return;
918 }
919
920 static const struct ethtool_ops qeth_l2_ethtool_ops = {
921 .get_link = ethtool_op_get_link,
922 .get_strings = qeth_core_get_strings,
923 .get_ethtool_stats = qeth_core_get_ethtool_stats,
924 .get_sset_count = qeth_core_get_sset_count,
925 .get_drvinfo = qeth_core_get_drvinfo,
926 .get_settings = qeth_core_ethtool_get_settings,
927 };
928
929 static const struct ethtool_ops qeth_l2_osn_ops = {
930 .get_strings = qeth_core_get_strings,
931 .get_ethtool_stats = qeth_core_get_ethtool_stats,
932 .get_sset_count = qeth_core_get_sset_count,
933 .get_drvinfo = qeth_core_get_drvinfo,
934 };
935
936 static const struct net_device_ops qeth_l2_netdev_ops = {
937 .ndo_open = qeth_l2_open,
938 .ndo_stop = qeth_l2_stop,
939 .ndo_get_stats = qeth_get_stats,
940 .ndo_start_xmit = qeth_l2_hard_start_xmit,
941 .ndo_validate_addr = eth_validate_addr,
942 .ndo_set_rx_mode = qeth_l2_set_multicast_list,
943 .ndo_do_ioctl = qeth_l2_do_ioctl,
944 .ndo_set_mac_address = qeth_l2_set_mac_address,
945 .ndo_change_mtu = qeth_change_mtu,
946 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
947 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
948 .ndo_tx_timeout = qeth_tx_timeout,
949 };
950
951 static int qeth_l2_setup_netdev(struct qeth_card *card)
952 {
953 switch (card->info.type) {
954 case QETH_CARD_TYPE_IQD:
955 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
956 ether_setup);
957 break;
958 case QETH_CARD_TYPE_OSN:
959 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
960 ether_setup);
961 card->dev->flags |= IFF_NOARP;
962 break;
963 default:
964 card->dev = alloc_etherdev(0);
965 }
966
967 if (!card->dev)
968 return -ENODEV;
969
970 card->dev->ml_priv = card;
971 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
972 card->dev->mtu = card->info.initial_mtu;
973 card->dev->netdev_ops = &qeth_l2_netdev_ops;
974 card->dev->ethtool_ops =
975 (card->info.type != QETH_CARD_TYPE_OSN) ?
976 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
977 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
978 card->info.broadcast_capable = 1;
979 qeth_l2_request_initial_mac(card);
980 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
981 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
982 return register_netdev(card->dev);
983 }
984
985 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
986 {
987 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
988 int rc = 0;
989 enum qeth_card_states recover_flag;
990
991 mutex_lock(&card->discipline_mutex);
992 mutex_lock(&card->conf_mutex);
993 QETH_DBF_TEXT(SETUP, 2, "setonlin");
994 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
995
996 recover_flag = card->state;
997 rc = qeth_core_hardsetup_card(card);
998 if (rc) {
999 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1000 rc = -ENODEV;
1001 goto out_remove;
1002 }
1003 qeth_bridgeport_query_support(card);
1004 if (card->options.sbp.supported_funcs)
1005 dev_info(&card->gdev->dev,
1006 "The device represents a HiperSockets Bridge Capable Port\n");
1007 qeth_trace_features(card);
1008
1009 if (!card->dev && qeth_l2_setup_netdev(card)) {
1010 rc = -ENODEV;
1011 goto out_remove;
1012 }
1013
1014 if (card->info.type != QETH_CARD_TYPE_OSN)
1015 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1016
1017 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1018 if (card->info.hwtrap &&
1019 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1020 card->info.hwtrap = 0;
1021 } else
1022 card->info.hwtrap = 0;
1023
1024 qeth_l2_setup_bridgeport_attrs(card);
1025
1026 card->state = CARD_STATE_HARDSETUP;
1027 memset(&card->rx, 0, sizeof(struct qeth_rx));
1028 qeth_print_status_message(card);
1029
1030 /* softsetup */
1031 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1032
1033 rc = qeth_send_startlan(card);
1034 if (rc) {
1035 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1036 if (rc == 0xe080) {
1037 dev_warn(&card->gdev->dev,
1038 "The LAN is offline\n");
1039 card->lan_online = 0;
1040 goto contin;
1041 }
1042 rc = -ENODEV;
1043 goto out_remove;
1044 } else
1045 card->lan_online = 1;
1046
1047 contin:
1048 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1049 (card->info.type == QETH_CARD_TYPE_OSX)) {
1050 /* configure isolation level */
1051 rc = qeth_set_access_ctrl_online(card, 0);
1052 if (rc) {
1053 rc = -ENODEV;
1054 goto out_remove;
1055 }
1056 }
1057
1058 if (card->info.type != QETH_CARD_TYPE_OSN &&
1059 card->info.type != QETH_CARD_TYPE_OSM)
1060 qeth_l2_process_vlans(card);
1061
1062 netif_tx_disable(card->dev);
1063
1064 rc = qeth_init_qdio_queues(card);
1065 if (rc) {
1066 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1067 rc = -ENODEV;
1068 goto out_remove;
1069 }
1070 card->state = CARD_STATE_SOFTSETUP;
1071 if (card->lan_online)
1072 netif_carrier_on(card->dev);
1073 else
1074 netif_carrier_off(card->dev);
1075
1076 qeth_set_allowed_threads(card, 0xffffffff, 0);
1077 if (recover_flag == CARD_STATE_RECOVER) {
1078 if (recovery_mode &&
1079 card->info.type != QETH_CARD_TYPE_OSN) {
1080 __qeth_l2_open(card->dev);
1081 } else {
1082 rtnl_lock();
1083 dev_open(card->dev);
1084 rtnl_unlock();
1085 }
1086 /* this also sets saved unicast addresses */
1087 qeth_l2_set_multicast_list(card->dev);
1088 }
1089 /* let user_space know that device is online */
1090 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1091 mutex_unlock(&card->conf_mutex);
1092 mutex_unlock(&card->discipline_mutex);
1093 return 0;
1094
1095 out_remove:
1096 qeth_l2_stop_card(card, 0);
1097 ccw_device_set_offline(CARD_DDEV(card));
1098 ccw_device_set_offline(CARD_WDEV(card));
1099 ccw_device_set_offline(CARD_RDEV(card));
1100 qdio_free(CARD_DDEV(card));
1101 if (recover_flag == CARD_STATE_RECOVER)
1102 card->state = CARD_STATE_RECOVER;
1103 else
1104 card->state = CARD_STATE_DOWN;
1105 mutex_unlock(&card->conf_mutex);
1106 mutex_unlock(&card->discipline_mutex);
1107 return rc;
1108 }
1109
1110 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1111 {
1112 return __qeth_l2_set_online(gdev, 0);
1113 }
1114
1115 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1116 int recovery_mode)
1117 {
1118 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1119 int rc = 0, rc2 = 0, rc3 = 0;
1120 enum qeth_card_states recover_flag;
1121
1122 mutex_lock(&card->discipline_mutex);
1123 mutex_lock(&card->conf_mutex);
1124 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1125 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1126
1127 if (card->dev && netif_carrier_ok(card->dev))
1128 netif_carrier_off(card->dev);
1129 recover_flag = card->state;
1130 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1131 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1132 card->info.hwtrap = 1;
1133 }
1134 qeth_l2_stop_card(card, recovery_mode);
1135 rc = ccw_device_set_offline(CARD_DDEV(card));
1136 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1137 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1138 if (!rc)
1139 rc = (rc2) ? rc2 : rc3;
1140 if (rc)
1141 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1142 qdio_free(CARD_DDEV(card));
1143 if (recover_flag == CARD_STATE_UP)
1144 card->state = CARD_STATE_RECOVER;
1145 /* let user_space know that device is offline */
1146 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1147 mutex_unlock(&card->conf_mutex);
1148 mutex_unlock(&card->discipline_mutex);
1149 return 0;
1150 }
1151
1152 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1153 {
1154 return __qeth_l2_set_offline(cgdev, 0);
1155 }
1156
1157 static int qeth_l2_recover(void *ptr)
1158 {
1159 struct qeth_card *card;
1160 int rc = 0;
1161
1162 card = (struct qeth_card *) ptr;
1163 QETH_CARD_TEXT(card, 2, "recover1");
1164 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1165 return 0;
1166 QETH_CARD_TEXT(card, 2, "recover2");
1167 dev_warn(&card->gdev->dev,
1168 "A recovery process has been started for the device\n");
1169 qeth_set_recovery_task(card);
1170 __qeth_l2_set_offline(card->gdev, 1);
1171 rc = __qeth_l2_set_online(card->gdev, 1);
1172 if (!rc)
1173 dev_info(&card->gdev->dev,
1174 "Device successfully recovered!\n");
1175 else {
1176 qeth_close_dev(card);
1177 dev_warn(&card->gdev->dev, "The qeth device driver "
1178 "failed to recover an error on the device\n");
1179 }
1180 qeth_clear_recovery_task(card);
1181 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1182 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1183 return 0;
1184 }
1185
1186 static int __init qeth_l2_init(void)
1187 {
1188 pr_info("register layer 2 discipline\n");
1189 return 0;
1190 }
1191
1192 static void __exit qeth_l2_exit(void)
1193 {
1194 pr_info("unregister layer 2 discipline\n");
1195 }
1196
1197 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1198 {
1199 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1200 qeth_set_allowed_threads(card, 0, 1);
1201 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1202 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1203 qeth_qdio_clear_card(card, 0);
1204 qeth_clear_qdio_buffers(card);
1205 qdio_free(CARD_DDEV(card));
1206 }
1207
1208 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1209 {
1210 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1211
1212 if (card->dev)
1213 netif_device_detach(card->dev);
1214 qeth_set_allowed_threads(card, 0, 1);
1215 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1216 if (gdev->state == CCWGROUP_OFFLINE)
1217 return 0;
1218 if (card->state == CARD_STATE_UP) {
1219 if (card->info.hwtrap)
1220 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1221 __qeth_l2_set_offline(card->gdev, 1);
1222 } else
1223 __qeth_l2_set_offline(card->gdev, 0);
1224 return 0;
1225 }
1226
1227 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1228 {
1229 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1230 int rc = 0;
1231
1232 if (gdev->state == CCWGROUP_OFFLINE)
1233 goto out;
1234
1235 if (card->state == CARD_STATE_RECOVER) {
1236 rc = __qeth_l2_set_online(card->gdev, 1);
1237 if (rc) {
1238 rtnl_lock();
1239 dev_close(card->dev);
1240 rtnl_unlock();
1241 }
1242 } else
1243 rc = __qeth_l2_set_online(card->gdev, 0);
1244 out:
1245 qeth_set_allowed_threads(card, 0xffffffff, 0);
1246 if (card->dev)
1247 netif_device_attach(card->dev);
1248 if (rc)
1249 dev_warn(&card->gdev->dev, "The qeth device driver "
1250 "failed to recover an error on the device\n");
1251 return rc;
1252 }
1253
1254 /* Returns zero if the command is successfully "consumed" */
1255 static int qeth_l2_control_event(struct qeth_card *card,
1256 struct qeth_ipa_cmd *cmd)
1257 {
1258 switch (cmd->hdr.command) {
1259 case IPA_CMD_SETBRIDGEPORT:
1260 if (cmd->data.sbp.hdr.command_code ==
1261 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1262 qeth_bridge_state_change(card, cmd);
1263 return 0;
1264 } else
1265 return 1;
1266 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1267 qeth_bridge_host_event(card, cmd);
1268 return 0;
1269 default:
1270 return 1;
1271 }
1272 }
1273
1274 struct qeth_discipline qeth_l2_discipline = {
1275 .start_poll = qeth_qdio_start_poll,
1276 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1277 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1278 .recover = qeth_l2_recover,
1279 .setup = qeth_l2_probe_device,
1280 .remove = qeth_l2_remove_device,
1281 .set_online = qeth_l2_set_online,
1282 .set_offline = qeth_l2_set_offline,
1283 .shutdown = qeth_l2_shutdown,
1284 .freeze = qeth_l2_pm_suspend,
1285 .thaw = qeth_l2_pm_resume,
1286 .restore = qeth_l2_pm_resume,
1287 .control_event_handler = qeth_l2_control_event,
1288 };
1289 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1290
1291 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1292 struct qeth_cmd_buffer *iob)
1293 {
1294 unsigned long flags;
1295 int rc = 0;
1296
1297 QETH_CARD_TEXT(card, 5, "osndctrd");
1298
1299 wait_event(card->wait_q,
1300 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1301 qeth_prepare_control_data(card, len, iob);
1302 QETH_CARD_TEXT(card, 6, "osnoirqp");
1303 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1304 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1305 (addr_t) iob, 0, 0);
1306 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1307 if (rc) {
1308 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1309 "ccw_device_start rc = %i\n", rc);
1310 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1311 qeth_release_buffer(iob->channel, iob);
1312 atomic_set(&card->write.irq_pending, 0);
1313 wake_up(&card->wait_q);
1314 }
1315 return rc;
1316 }
1317
1318 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1319 struct qeth_cmd_buffer *iob, int data_len)
1320 {
1321 u16 s1, s2;
1322
1323 QETH_CARD_TEXT(card, 4, "osndipa");
1324
1325 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1326 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1327 s2 = (u16)data_len;
1328 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1329 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1330 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1331 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1332 return qeth_osn_send_control_data(card, s1, iob);
1333 }
1334
1335 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1336 {
1337 struct qeth_cmd_buffer *iob;
1338 struct qeth_card *card;
1339 int rc;
1340
1341 if (!dev)
1342 return -ENODEV;
1343 card = dev->ml_priv;
1344 if (!card)
1345 return -ENODEV;
1346 QETH_CARD_TEXT(card, 2, "osnsdmc");
1347 if ((card->state != CARD_STATE_UP) &&
1348 (card->state != CARD_STATE_SOFTSETUP))
1349 return -ENODEV;
1350 iob = qeth_wait_for_buffer(&card->write);
1351 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1352 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1353 return rc;
1354 }
1355 EXPORT_SYMBOL(qeth_osn_assist);
1356
1357 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1358 int (*assist_cb)(struct net_device *, void *),
1359 int (*data_cb)(struct sk_buff *))
1360 {
1361 struct qeth_card *card;
1362
1363 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1364 if (*dev == NULL)
1365 return -ENODEV;
1366 card = (*dev)->ml_priv;
1367 if (!card)
1368 return -ENODEV;
1369 QETH_CARD_TEXT(card, 2, "osnreg");
1370 if ((assist_cb == NULL) || (data_cb == NULL))
1371 return -EINVAL;
1372 card->osn_info.assist_cb = assist_cb;
1373 card->osn_info.data_cb = data_cb;
1374 return 0;
1375 }
1376 EXPORT_SYMBOL(qeth_osn_register);
1377
1378 void qeth_osn_deregister(struct net_device *dev)
1379 {
1380 struct qeth_card *card;
1381
1382 if (!dev)
1383 return;
1384 card = dev->ml_priv;
1385 if (!card)
1386 return;
1387 QETH_CARD_TEXT(card, 2, "osndereg");
1388 card->osn_info.assist_cb = NULL;
1389 card->osn_info.data_cb = NULL;
1390 return;
1391 }
1392 EXPORT_SYMBOL(qeth_osn_deregister);
1393
1394 /* SETBRIDGEPORT support, async notifications */
1395
1396 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1397
1398 /**
1399 * qeth_bridge_emit_host_event() - bridgeport address change notification
1400 * @card: qeth_card structure pointer, for udev events.
1401 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1402 * and reset token and addr_lnid are unused and may be NULL.
1403 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1404 * object, 0 - addition of an object.
1405 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1406 * @token: "network token" structure identifying physical address of the port.
1407 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1408 *
1409 * This function is called when registrations and deregistrations are
1410 * reported by the hardware, and also when notifications are enabled -
1411 * for all currently registered addresses.
1412 */
1413 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1414 enum qeth_an_event_type evtype,
1415 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1416 {
1417 char str[7][32];
1418 char *env[8];
1419 int i = 0;
1420
1421 switch (evtype) {
1422 case anev_reg_unreg:
1423 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1424 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1425 ? "deregister" : "register");
1426 env[i] = str[i]; i++;
1427 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1428 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1429 addr_lnid->lnid);
1430 env[i] = str[i]; i++;
1431 }
1432 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1433 snprintf(str[i], sizeof(str[i]), "MAC=%pM6",
1434 &addr_lnid->mac);
1435 env[i] = str[i]; i++;
1436 }
1437 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1438 token->cssid, token->ssid, token->devnum);
1439 env[i] = str[i]; i++;
1440 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1441 env[i] = str[i]; i++;
1442 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1443 token->chpid);
1444 env[i] = str[i]; i++;
1445 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1446 env[i] = str[i]; i++;
1447 break;
1448 case anev_abort:
1449 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1450 env[i] = str[i]; i++;
1451 break;
1452 case anev_reset:
1453 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1454 env[i] = str[i]; i++;
1455 break;
1456 }
1457 env[i] = NULL;
1458 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1459 }
1460
1461 struct qeth_bridge_state_data {
1462 struct work_struct worker;
1463 struct qeth_card *card;
1464 struct qeth_sbp_state_change qports;
1465 };
1466
1467 static void qeth_bridge_state_change_worker(struct work_struct *work)
1468 {
1469 struct qeth_bridge_state_data *data =
1470 container_of(work, struct qeth_bridge_state_data, worker);
1471 /* We are only interested in the first entry - local port */
1472 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1473 char env_locrem[32];
1474 char env_role[32];
1475 char env_state[32];
1476 char *env[] = {
1477 env_locrem,
1478 env_role,
1479 env_state,
1480 NULL
1481 };
1482
1483 /* Role should not change by itself, but if it did, */
1484 /* information from the hardware is authoritative. */
1485 mutex_lock(&data->card->conf_mutex);
1486 data->card->options.sbp.role = entry->role;
1487 mutex_unlock(&data->card->conf_mutex);
1488
1489 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1490 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1491 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1492 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1493 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1494 "<INVALID>");
1495 snprintf(env_state, sizeof(env_state), "STATE=%s",
1496 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1497 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1498 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1499 "<INVALID>");
1500 kobject_uevent_env(&data->card->gdev->dev.kobj,
1501 KOBJ_CHANGE, env);
1502 kfree(data);
1503 }
1504
1505 static void qeth_bridge_state_change(struct qeth_card *card,
1506 struct qeth_ipa_cmd *cmd)
1507 {
1508 struct qeth_sbp_state_change *qports =
1509 &cmd->data.sbp.data.state_change;
1510 struct qeth_bridge_state_data *data;
1511 int extrasize;
1512
1513 QETH_CARD_TEXT(card, 2, "brstchng");
1514 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1515 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1516 return;
1517 }
1518 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1519 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1520 GFP_ATOMIC);
1521 if (!data) {
1522 QETH_CARD_TEXT(card, 2, "BPSalloc");
1523 return;
1524 }
1525 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1526 data->card = card;
1527 memcpy(&data->qports, qports,
1528 sizeof(struct qeth_sbp_state_change) + extrasize);
1529 queue_work(qeth_wq, &data->worker);
1530 }
1531
1532 struct qeth_bridge_host_data {
1533 struct work_struct worker;
1534 struct qeth_card *card;
1535 struct qeth_ipacmd_addr_change hostevs;
1536 };
1537
1538 static void qeth_bridge_host_event_worker(struct work_struct *work)
1539 {
1540 struct qeth_bridge_host_data *data =
1541 container_of(work, struct qeth_bridge_host_data, worker);
1542 int i;
1543
1544 if (data->hostevs.lost_event_mask) {
1545 dev_info(&data->card->gdev->dev,
1546 "Address notification from the HiperSockets Bridge Port stopped %s (%s)\n",
1547 data->card->dev->name,
1548 (data->hostevs.lost_event_mask == 0x01)
1549 ? "Overflow"
1550 : (data->hostevs.lost_event_mask == 0x02)
1551 ? "Bridge port state change"
1552 : "Unknown reason");
1553 mutex_lock(&data->card->conf_mutex);
1554 data->card->options.sbp.hostnotification = 0;
1555 mutex_unlock(&data->card->conf_mutex);
1556 qeth_bridge_emit_host_event(data->card, anev_abort,
1557 0, NULL, NULL);
1558 } else
1559 for (i = 0; i < data->hostevs.num_entries; i++) {
1560 struct qeth_ipacmd_addr_change_entry *entry =
1561 &data->hostevs.entry[i];
1562 qeth_bridge_emit_host_event(data->card,
1563 anev_reg_unreg,
1564 entry->change_code,
1565 &entry->token, &entry->addr_lnid);
1566 }
1567 kfree(data);
1568 }
1569
1570 static void qeth_bridge_host_event(struct qeth_card *card,
1571 struct qeth_ipa_cmd *cmd)
1572 {
1573 struct qeth_ipacmd_addr_change *hostevs =
1574 &cmd->data.addrchange;
1575 struct qeth_bridge_host_data *data;
1576 int extrasize;
1577
1578 QETH_CARD_TEXT(card, 2, "brhostev");
1579 if (cmd->hdr.return_code != 0x0000) {
1580 if (cmd->hdr.return_code == 0x0010) {
1581 if (hostevs->lost_event_mask == 0x00)
1582 hostevs->lost_event_mask = 0xff;
1583 } else {
1584 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1585 cmd->hdr.return_code);
1586 return;
1587 }
1588 }
1589 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1590 hostevs->num_entries;
1591 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1592 GFP_ATOMIC);
1593 if (!data) {
1594 QETH_CARD_TEXT(card, 2, "BPHalloc");
1595 return;
1596 }
1597 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1598 data->card = card;
1599 memcpy(&data->hostevs, hostevs,
1600 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1601 queue_work(qeth_wq, &data->worker);
1602 }
1603
1604 /* SETBRIDGEPORT support; sending commands */
1605
1606 struct _qeth_sbp_cbctl {
1607 u16 ipa_rc;
1608 u16 cmd_rc;
1609 union {
1610 u32 supported;
1611 struct {
1612 enum qeth_sbp_roles *role;
1613 enum qeth_sbp_states *state;
1614 } qports;
1615 } data;
1616 };
1617
1618 /**
1619 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1620 * @card: qeth_card structure pointer, for debug messages.
1621 * @cbctl: state structure with hardware return codes.
1622 * @setcmd: IPA command code
1623 *
1624 * Returns negative errno-compatible error indication or 0 on success.
1625 */
1626 static int qeth_bridgeport_makerc(struct qeth_card *card,
1627 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1628 {
1629 int rc;
1630
1631 switch (cbctl->ipa_rc) {
1632 case IPA_RC_SUCCESS:
1633 switch (cbctl->cmd_rc) {
1634 case 0x0000:
1635 rc = 0;
1636 break;
1637 case 0x0004:
1638 rc = -ENOSYS;
1639 break;
1640 case 0x000C: /* Not configured as bridge Port */
1641 rc = -ENODEV; /* maybe not the best code here? */
1642 dev_err(&card->gdev->dev,
1643 "The HiperSockets device is not configured as a Bridge Port\n");
1644 break;
1645 case 0x0014: /* Another device is Primary */
1646 switch (setcmd) {
1647 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1648 rc = -EEXIST;
1649 dev_err(&card->gdev->dev,
1650 "The HiperSockets LAN already has a primary Bridge Port\n");
1651 break;
1652 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1653 rc = -EBUSY;
1654 dev_err(&card->gdev->dev,
1655 "The HiperSockets device is already a primary Bridge Port\n");
1656 break;
1657 default:
1658 rc = -EIO;
1659 }
1660 break;
1661 case 0x0018: /* This device is currently Secondary */
1662 rc = -EBUSY;
1663 dev_err(&card->gdev->dev,
1664 "The HiperSockets device is already a secondary Bridge Port\n");
1665 break;
1666 case 0x001C: /* Limit for Secondary devices reached */
1667 rc = -EEXIST;
1668 dev_err(&card->gdev->dev,
1669 "The HiperSockets LAN cannot have more secondary Bridge Ports\n");
1670 break;
1671 case 0x0024: /* This device is currently Primary */
1672 rc = -EBUSY;
1673 dev_err(&card->gdev->dev,
1674 "The HiperSockets device is already a primary Bridge Port\n");
1675 break;
1676 case 0x0020: /* Not authorized by zManager */
1677 rc = -EACCES;
1678 dev_err(&card->gdev->dev,
1679 "The HiperSockets device is not authorized to be a Bridge Port\n");
1680 break;
1681 default:
1682 rc = -EIO;
1683 }
1684 break;
1685 case IPA_RC_NOTSUPP:
1686 rc = -ENOSYS;
1687 break;
1688 case IPA_RC_UNSUPPORTED_COMMAND:
1689 rc = -ENOSYS;
1690 break;
1691 default:
1692 rc = -EIO;
1693 }
1694 if (rc) {
1695 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1696 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1697 }
1698 return rc;
1699 }
1700
1701 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1702 struct qeth_reply *reply, unsigned long data)
1703 {
1704 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1705 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1706 QETH_CARD_TEXT(card, 2, "brqsupcb");
1707 cbctl->ipa_rc = cmd->hdr.return_code;
1708 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1709 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1710 cbctl->data.supported =
1711 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1712 } else {
1713 cbctl->data.supported = 0;
1714 }
1715 return 0;
1716 }
1717
1718 /**
1719 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1720 * @card: qeth_card structure pointer.
1721 *
1722 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1723 * strucutre: card->options.sbp.supported_funcs.
1724 */
1725 static void qeth_bridgeport_query_support(struct qeth_card *card)
1726 {
1727 struct qeth_cmd_buffer *iob;
1728 struct qeth_ipa_cmd *cmd;
1729 struct _qeth_sbp_cbctl cbctl;
1730
1731 QETH_CARD_TEXT(card, 2, "brqsuppo");
1732 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1733 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1734 cmd->data.sbp.hdr.cmdlength =
1735 sizeof(struct qeth_ipacmd_sbp_hdr) +
1736 sizeof(struct qeth_sbp_query_cmds_supp);
1737 cmd->data.sbp.hdr.command_code =
1738 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1739 cmd->data.sbp.hdr.used_total = 1;
1740 cmd->data.sbp.hdr.seq_no = 1;
1741 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1742 (void *)&cbctl) ||
1743 qeth_bridgeport_makerc(card, &cbctl,
1744 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1745 /* non-zero makerc signifies failure, and produce messages */
1746 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1747 return;
1748 }
1749 card->options.sbp.supported_funcs = cbctl.data.supported;
1750 }
1751
1752 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1753 struct qeth_reply *reply, unsigned long data)
1754 {
1755 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1756 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1757 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1758
1759 QETH_CARD_TEXT(card, 2, "brqprtcb");
1760 cbctl->ipa_rc = cmd->hdr.return_code;
1761 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1762 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1763 return 0;
1764 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1765 cbctl->cmd_rc = 0xffff;
1766 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1767 return 0;
1768 }
1769 /* first entry contains the state of the local port */
1770 if (qports->num_entries > 0) {
1771 if (cbctl->data.qports.role)
1772 *cbctl->data.qports.role = qports->entry[0].role;
1773 if (cbctl->data.qports.state)
1774 *cbctl->data.qports.state = qports->entry[0].state;
1775 }
1776 return 0;
1777 }
1778
1779 /**
1780 * qeth_bridgeport_query_ports() - query local bridgeport status.
1781 * @card: qeth_card structure pointer.
1782 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1783 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1784 *
1785 * Returns negative errno-compatible error indication or 0 on success.
1786 *
1787 * 'role' and 'state' are not updated in case of hardware operation failure.
1788 */
1789 int qeth_bridgeport_query_ports(struct qeth_card *card,
1790 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1791 {
1792 int rc = 0;
1793 struct qeth_cmd_buffer *iob;
1794 struct qeth_ipa_cmd *cmd;
1795 struct _qeth_sbp_cbctl cbctl = {
1796 .data = {
1797 .qports = {
1798 .role = role,
1799 .state = state,
1800 },
1801 },
1802 };
1803
1804 QETH_CARD_TEXT(card, 2, "brqports");
1805 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1806 return -EOPNOTSUPP;
1807 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1808 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1809 cmd->data.sbp.hdr.cmdlength =
1810 sizeof(struct qeth_ipacmd_sbp_hdr);
1811 cmd->data.sbp.hdr.command_code =
1812 IPA_SBP_QUERY_BRIDGE_PORTS;
1813 cmd->data.sbp.hdr.used_total = 1;
1814 cmd->data.sbp.hdr.seq_no = 1;
1815 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1816 (void *)&cbctl);
1817 if (rc)
1818 return rc;
1819 rc = qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1820 if (rc)
1821 return rc;
1822 return 0;
1823 }
1824 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1825
1826 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1827 struct qeth_reply *reply, unsigned long data)
1828 {
1829 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1830 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1831 QETH_CARD_TEXT(card, 2, "brsetrcb");
1832 cbctl->ipa_rc = cmd->hdr.return_code;
1833 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1834 return 0;
1835 }
1836
1837 /**
1838 * qeth_bridgeport_setrole() - Assign primary role to the port.
1839 * @card: qeth_card structure pointer.
1840 * @role: Role to assign.
1841 *
1842 * Returns negative errno-compatible error indication or 0 on success.
1843 */
1844 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1845 {
1846 int rc = 0;
1847 int cmdlength;
1848 struct qeth_cmd_buffer *iob;
1849 struct qeth_ipa_cmd *cmd;
1850 struct _qeth_sbp_cbctl cbctl;
1851 enum qeth_ipa_sbp_cmd setcmd;
1852
1853 QETH_CARD_TEXT(card, 2, "brsetrol");
1854 switch (role) {
1855 case QETH_SBP_ROLE_NONE:
1856 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1857 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1858 sizeof(struct qeth_sbp_reset_role);
1859 break;
1860 case QETH_SBP_ROLE_PRIMARY:
1861 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1862 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1863 sizeof(struct qeth_sbp_set_primary);
1864 break;
1865 case QETH_SBP_ROLE_SECONDARY:
1866 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1867 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1868 sizeof(struct qeth_sbp_set_secondary);
1869 break;
1870 default:
1871 return -EINVAL;
1872 }
1873 if (!(card->options.sbp.supported_funcs & setcmd))
1874 return -EOPNOTSUPP;
1875 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1876 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1877 cmd->data.sbp.hdr.cmdlength = cmdlength;
1878 cmd->data.sbp.hdr.command_code = setcmd;
1879 cmd->data.sbp.hdr.used_total = 1;
1880 cmd->data.sbp.hdr.seq_no = 1;
1881 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1882 (void *)&cbctl);
1883 if (rc)
1884 return rc;
1885 rc = qeth_bridgeport_makerc(card, &cbctl, setcmd);
1886 return rc;
1887 }
1888
1889 /**
1890 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1891 * @card: qeth_card structure pointer, for debug messages.
1892 *
1893 * Returns negative errno-compatible error indication or 0 on success.
1894 */
1895 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1896 {
1897 int rc;
1898
1899 if (pnso_rc == 0)
1900 switch (response) {
1901 case 0x0001:
1902 rc = 0;
1903 break;
1904 case 0x0004:
1905 case 0x0100:
1906 case 0x0106:
1907 rc = -ENOSYS;
1908 dev_err(&card->gdev->dev,
1909 "Setting address notification failed\n");
1910 break;
1911 case 0x0107:
1912 rc = -EAGAIN;
1913 break;
1914 default:
1915 rc = -EIO;
1916 }
1917 else
1918 rc = -EIO;
1919
1920 if (rc) {
1921 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1922 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1923 }
1924 return rc;
1925 }
1926
1927 static void qeth_bridgeport_an_set_cb(void *priv,
1928 enum qdio_brinfo_entry_type type, void *entry)
1929 {
1930 struct qeth_card *card = (struct qeth_card *)priv;
1931 struct qdio_brinfo_entry_l2 *l2entry;
1932 u8 code;
1933
1934 if (type != l2_addr_lnid) {
1935 WARN_ON_ONCE(1);
1936 return;
1937 }
1938
1939 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1940 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1941 if (l2entry->addr_lnid.lnid)
1942 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1943 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1944 (struct net_if_token *)&l2entry->nit,
1945 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1946 }
1947
1948 /**
1949 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1950 * @card: qeth_card structure pointer.
1951 * @enable: 0 - disable, non-zero - enable notifications
1952 *
1953 * Returns negative errno-compatible error indication or 0 on success.
1954 *
1955 * On enable, emits a series of address notifications udev events for all
1956 * currently registered hosts.
1957 */
1958 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1959 {
1960 int rc;
1961 u16 response;
1962 struct ccw_device *ddev;
1963 struct subchannel_id schid;
1964
1965 if (!card)
1966 return -EINVAL;
1967 if (!card->options.sbp.supported_funcs)
1968 return -EOPNOTSUPP;
1969 ddev = CARD_DDEV(card);
1970 ccw_device_get_schid(ddev, &schid);
1971
1972 if (enable) {
1973 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1974 rc = qdio_pnso_brinfo(schid, 1, &response,
1975 qeth_bridgeport_an_set_cb, card);
1976 } else
1977 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
1978 return qeth_anset_makerc(card, rc, response);
1979 }
1980 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
1981
1982 module_init(qeth_l2_init);
1983 module_exit(qeth_l2_exit);
1984 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1985 MODULE_DESCRIPTION("qeth layer 2 discipline");
1986 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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