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qeth: Extend priority queueing to IPv6
[mirror_ubuntu-bionic-kernel.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", ether_setup);
956 break;
957 case QETH_CARD_TYPE_OSN:
958 card->dev = alloc_netdev(0, "osn%d", ether_setup);
959 card->dev->flags |= IFF_NOARP;
960 break;
961 default:
962 card->dev = alloc_etherdev(0);
963 }
964
965 if (!card->dev)
966 return -ENODEV;
967
968 card->dev->ml_priv = card;
969 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
970 card->dev->mtu = card->info.initial_mtu;
971 card->dev->netdev_ops = &qeth_l2_netdev_ops;
972 if (card->info.type != QETH_CARD_TYPE_OSN)
973 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
974 else
975 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
976 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
977 card->info.broadcast_capable = 1;
978 qeth_l2_request_initial_mac(card);
979 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
980 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
981 return register_netdev(card->dev);
982 }
983
984 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
985 {
986 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
987 int rc = 0;
988 enum qeth_card_states recover_flag;
989
990 mutex_lock(&card->discipline_mutex);
991 mutex_lock(&card->conf_mutex);
992 QETH_DBF_TEXT(SETUP, 2, "setonlin");
993 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
994
995 recover_flag = card->state;
996 rc = qeth_core_hardsetup_card(card);
997 if (rc) {
998 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
999 rc = -ENODEV;
1000 goto out_remove;
1001 }
1002 qeth_bridgeport_query_support(card);
1003 if (card->options.sbp.supported_funcs)
1004 dev_info(&card->gdev->dev,
1005 "The device represents a HiperSockets Bridge Capable Port\n");
1006 qeth_trace_features(card);
1007
1008 if (!card->dev && qeth_l2_setup_netdev(card)) {
1009 rc = -ENODEV;
1010 goto out_remove;
1011 }
1012
1013 if (card->info.type != QETH_CARD_TYPE_OSN)
1014 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1015
1016 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1017 if (card->info.hwtrap &&
1018 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1019 card->info.hwtrap = 0;
1020 } else
1021 card->info.hwtrap = 0;
1022
1023 qeth_l2_setup_bridgeport_attrs(card);
1024
1025 card->state = CARD_STATE_HARDSETUP;
1026 memset(&card->rx, 0, sizeof(struct qeth_rx));
1027 qeth_print_status_message(card);
1028
1029 /* softsetup */
1030 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1031
1032 rc = qeth_send_startlan(card);
1033 if (rc) {
1034 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1035 if (rc == 0xe080) {
1036 dev_warn(&card->gdev->dev,
1037 "The LAN is offline\n");
1038 card->lan_online = 0;
1039 goto contin;
1040 }
1041 rc = -ENODEV;
1042 goto out_remove;
1043 } else
1044 card->lan_online = 1;
1045
1046 contin:
1047 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1048 (card->info.type == QETH_CARD_TYPE_OSX)) {
1049 /* configure isolation level */
1050 rc = qeth_set_access_ctrl_online(card, 0);
1051 if (rc) {
1052 rc = -ENODEV;
1053 goto out_remove;
1054 }
1055 }
1056
1057 if (card->info.type != QETH_CARD_TYPE_OSN &&
1058 card->info.type != QETH_CARD_TYPE_OSM)
1059 qeth_l2_process_vlans(card);
1060
1061 netif_tx_disable(card->dev);
1062
1063 rc = qeth_init_qdio_queues(card);
1064 if (rc) {
1065 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1066 rc = -ENODEV;
1067 goto out_remove;
1068 }
1069 card->state = CARD_STATE_SOFTSETUP;
1070 if (card->lan_online)
1071 netif_carrier_on(card->dev);
1072 else
1073 netif_carrier_off(card->dev);
1074
1075 qeth_set_allowed_threads(card, 0xffffffff, 0);
1076 if (recover_flag == CARD_STATE_RECOVER) {
1077 if (recovery_mode &&
1078 card->info.type != QETH_CARD_TYPE_OSN) {
1079 __qeth_l2_open(card->dev);
1080 } else {
1081 rtnl_lock();
1082 dev_open(card->dev);
1083 rtnl_unlock();
1084 }
1085 /* this also sets saved unicast addresses */
1086 qeth_l2_set_multicast_list(card->dev);
1087 }
1088 /* let user_space know that device is online */
1089 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1090 mutex_unlock(&card->conf_mutex);
1091 mutex_unlock(&card->discipline_mutex);
1092 return 0;
1093
1094 out_remove:
1095 qeth_l2_stop_card(card, 0);
1096 ccw_device_set_offline(CARD_DDEV(card));
1097 ccw_device_set_offline(CARD_WDEV(card));
1098 ccw_device_set_offline(CARD_RDEV(card));
1099 qdio_free(CARD_DDEV(card));
1100 if (recover_flag == CARD_STATE_RECOVER)
1101 card->state = CARD_STATE_RECOVER;
1102 else
1103 card->state = CARD_STATE_DOWN;
1104 mutex_unlock(&card->conf_mutex);
1105 mutex_unlock(&card->discipline_mutex);
1106 return rc;
1107 }
1108
1109 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1110 {
1111 return __qeth_l2_set_online(gdev, 0);
1112 }
1113
1114 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1115 int recovery_mode)
1116 {
1117 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1118 int rc = 0, rc2 = 0, rc3 = 0;
1119 enum qeth_card_states recover_flag;
1120
1121 mutex_lock(&card->discipline_mutex);
1122 mutex_lock(&card->conf_mutex);
1123 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1124 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1125
1126 if (card->dev && netif_carrier_ok(card->dev))
1127 netif_carrier_off(card->dev);
1128 recover_flag = card->state;
1129 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1130 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1131 card->info.hwtrap = 1;
1132 }
1133 qeth_l2_stop_card(card, recovery_mode);
1134 rc = ccw_device_set_offline(CARD_DDEV(card));
1135 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1136 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1137 if (!rc)
1138 rc = (rc2) ? rc2 : rc3;
1139 if (rc)
1140 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1141 qdio_free(CARD_DDEV(card));
1142 if (recover_flag == CARD_STATE_UP)
1143 card->state = CARD_STATE_RECOVER;
1144 /* let user_space know that device is offline */
1145 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1146 mutex_unlock(&card->conf_mutex);
1147 mutex_unlock(&card->discipline_mutex);
1148 return 0;
1149 }
1150
1151 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1152 {
1153 return __qeth_l2_set_offline(cgdev, 0);
1154 }
1155
1156 static int qeth_l2_recover(void *ptr)
1157 {
1158 struct qeth_card *card;
1159 int rc = 0;
1160
1161 card = (struct qeth_card *) ptr;
1162 QETH_CARD_TEXT(card, 2, "recover1");
1163 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1164 return 0;
1165 QETH_CARD_TEXT(card, 2, "recover2");
1166 dev_warn(&card->gdev->dev,
1167 "A recovery process has been started for the device\n");
1168 qeth_set_recovery_task(card);
1169 __qeth_l2_set_offline(card->gdev, 1);
1170 rc = __qeth_l2_set_online(card->gdev, 1);
1171 if (!rc)
1172 dev_info(&card->gdev->dev,
1173 "Device successfully recovered!\n");
1174 else {
1175 qeth_close_dev(card);
1176 dev_warn(&card->gdev->dev, "The qeth device driver "
1177 "failed to recover an error on the device\n");
1178 }
1179 qeth_clear_recovery_task(card);
1180 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1181 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1182 return 0;
1183 }
1184
1185 static int __init qeth_l2_init(void)
1186 {
1187 pr_info("register layer 2 discipline\n");
1188 return 0;
1189 }
1190
1191 static void __exit qeth_l2_exit(void)
1192 {
1193 pr_info("unregister layer 2 discipline\n");
1194 }
1195
1196 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1197 {
1198 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1199 qeth_set_allowed_threads(card, 0, 1);
1200 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1201 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1202 qeth_qdio_clear_card(card, 0);
1203 qeth_clear_qdio_buffers(card);
1204 qdio_free(CARD_DDEV(card));
1205 }
1206
1207 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1208 {
1209 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1210
1211 if (card->dev)
1212 netif_device_detach(card->dev);
1213 qeth_set_allowed_threads(card, 0, 1);
1214 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1215 if (gdev->state == CCWGROUP_OFFLINE)
1216 return 0;
1217 if (card->state == CARD_STATE_UP) {
1218 if (card->info.hwtrap)
1219 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1220 __qeth_l2_set_offline(card->gdev, 1);
1221 } else
1222 __qeth_l2_set_offline(card->gdev, 0);
1223 return 0;
1224 }
1225
1226 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1227 {
1228 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1229 int rc = 0;
1230
1231 if (gdev->state == CCWGROUP_OFFLINE)
1232 goto out;
1233
1234 if (card->state == CARD_STATE_RECOVER) {
1235 rc = __qeth_l2_set_online(card->gdev, 1);
1236 if (rc) {
1237 rtnl_lock();
1238 dev_close(card->dev);
1239 rtnl_unlock();
1240 }
1241 } else
1242 rc = __qeth_l2_set_online(card->gdev, 0);
1243 out:
1244 qeth_set_allowed_threads(card, 0xffffffff, 0);
1245 if (card->dev)
1246 netif_device_attach(card->dev);
1247 if (rc)
1248 dev_warn(&card->gdev->dev, "The qeth device driver "
1249 "failed to recover an error on the device\n");
1250 return rc;
1251 }
1252
1253 /* Returns zero if the command is successfully "consumed" */
1254 static int qeth_l2_control_event(struct qeth_card *card,
1255 struct qeth_ipa_cmd *cmd)
1256 {
1257 switch (cmd->hdr.command) {
1258 case IPA_CMD_SETBRIDGEPORT:
1259 if (cmd->data.sbp.hdr.command_code ==
1260 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1261 qeth_bridge_state_change(card, cmd);
1262 return 0;
1263 } else
1264 return 1;
1265 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1266 qeth_bridge_host_event(card, cmd);
1267 return 0;
1268 default:
1269 return 1;
1270 }
1271 }
1272
1273 struct qeth_discipline qeth_l2_discipline = {
1274 .start_poll = qeth_qdio_start_poll,
1275 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1276 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1277 .recover = qeth_l2_recover,
1278 .setup = qeth_l2_probe_device,
1279 .remove = qeth_l2_remove_device,
1280 .set_online = qeth_l2_set_online,
1281 .set_offline = qeth_l2_set_offline,
1282 .shutdown = qeth_l2_shutdown,
1283 .freeze = qeth_l2_pm_suspend,
1284 .thaw = qeth_l2_pm_resume,
1285 .restore = qeth_l2_pm_resume,
1286 .control_event_handler = qeth_l2_control_event,
1287 };
1288 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1289
1290 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1291 struct qeth_cmd_buffer *iob)
1292 {
1293 unsigned long flags;
1294 int rc = 0;
1295
1296 QETH_CARD_TEXT(card, 5, "osndctrd");
1297
1298 wait_event(card->wait_q,
1299 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1300 qeth_prepare_control_data(card, len, iob);
1301 QETH_CARD_TEXT(card, 6, "osnoirqp");
1302 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1303 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1304 (addr_t) iob, 0, 0);
1305 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1306 if (rc) {
1307 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1308 "ccw_device_start rc = %i\n", rc);
1309 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1310 qeth_release_buffer(iob->channel, iob);
1311 atomic_set(&card->write.irq_pending, 0);
1312 wake_up(&card->wait_q);
1313 }
1314 return rc;
1315 }
1316
1317 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1318 struct qeth_cmd_buffer *iob, int data_len)
1319 {
1320 u16 s1, s2;
1321
1322 QETH_CARD_TEXT(card, 4, "osndipa");
1323
1324 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1325 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1326 s2 = (u16)data_len;
1327 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1328 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1329 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1330 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1331 return qeth_osn_send_control_data(card, s1, iob);
1332 }
1333
1334 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1335 {
1336 struct qeth_cmd_buffer *iob;
1337 struct qeth_card *card;
1338 int rc;
1339
1340 if (!dev)
1341 return -ENODEV;
1342 card = dev->ml_priv;
1343 if (!card)
1344 return -ENODEV;
1345 QETH_CARD_TEXT(card, 2, "osnsdmc");
1346 if ((card->state != CARD_STATE_UP) &&
1347 (card->state != CARD_STATE_SOFTSETUP))
1348 return -ENODEV;
1349 iob = qeth_wait_for_buffer(&card->write);
1350 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1351 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1352 return rc;
1353 }
1354 EXPORT_SYMBOL(qeth_osn_assist);
1355
1356 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1357 int (*assist_cb)(struct net_device *, void *),
1358 int (*data_cb)(struct sk_buff *))
1359 {
1360 struct qeth_card *card;
1361
1362 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1363 if (*dev == NULL)
1364 return -ENODEV;
1365 card = (*dev)->ml_priv;
1366 if (!card)
1367 return -ENODEV;
1368 QETH_CARD_TEXT(card, 2, "osnreg");
1369 if ((assist_cb == NULL) || (data_cb == NULL))
1370 return -EINVAL;
1371 card->osn_info.assist_cb = assist_cb;
1372 card->osn_info.data_cb = data_cb;
1373 return 0;
1374 }
1375 EXPORT_SYMBOL(qeth_osn_register);
1376
1377 void qeth_osn_deregister(struct net_device *dev)
1378 {
1379 struct qeth_card *card;
1380
1381 if (!dev)
1382 return;
1383 card = dev->ml_priv;
1384 if (!card)
1385 return;
1386 QETH_CARD_TEXT(card, 2, "osndereg");
1387 card->osn_info.assist_cb = NULL;
1388 card->osn_info.data_cb = NULL;
1389 return;
1390 }
1391 EXPORT_SYMBOL(qeth_osn_deregister);
1392
1393 /* SETBRIDGEPORT support, async notifications */
1394
1395 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1396
1397 /**
1398 * qeth_bridge_emit_host_event() - bridgeport address change notification
1399 * @card: qeth_card structure pointer, for udev events.
1400 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1401 * and reset token and addr_lnid are unused and may be NULL.
1402 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1403 * object, 0 - addition of an object.
1404 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1405 * @token: "network token" structure identifying physical address of the port.
1406 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1407 *
1408 * This function is called when registrations and deregistrations are
1409 * reported by the hardware, and also when notifications are enabled -
1410 * for all currently registered addresses.
1411 */
1412 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1413 enum qeth_an_event_type evtype,
1414 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1415 {
1416 char str[7][32];
1417 char *env[8];
1418 int i = 0;
1419
1420 switch (evtype) {
1421 case anev_reg_unreg:
1422 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1423 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1424 ? "deregister" : "register");
1425 env[i] = str[i]; i++;
1426 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1427 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1428 addr_lnid->lnid);
1429 env[i] = str[i]; i++;
1430 }
1431 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1432 snprintf(str[i], sizeof(str[i]), "MAC=%pM6",
1433 &addr_lnid->mac);
1434 env[i] = str[i]; i++;
1435 }
1436 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1437 token->cssid, token->ssid, token->devnum);
1438 env[i] = str[i]; i++;
1439 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1440 env[i] = str[i]; i++;
1441 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1442 token->chpid);
1443 env[i] = str[i]; i++;
1444 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1445 env[i] = str[i]; i++;
1446 break;
1447 case anev_abort:
1448 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1449 env[i] = str[i]; i++;
1450 break;
1451 case anev_reset:
1452 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1453 env[i] = str[i]; i++;
1454 break;
1455 }
1456 env[i] = NULL;
1457 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1458 }
1459
1460 struct qeth_bridge_state_data {
1461 struct work_struct worker;
1462 struct qeth_card *card;
1463 struct qeth_sbp_state_change qports;
1464 };
1465
1466 static void qeth_bridge_state_change_worker(struct work_struct *work)
1467 {
1468 struct qeth_bridge_state_data *data =
1469 container_of(work, struct qeth_bridge_state_data, worker);
1470 /* We are only interested in the first entry - local port */
1471 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1472 char env_locrem[32];
1473 char env_role[32];
1474 char env_state[32];
1475 char *env[] = {
1476 env_locrem,
1477 env_role,
1478 env_state,
1479 NULL
1480 };
1481
1482 /* Role should not change by itself, but if it did, */
1483 /* information from the hardware is authoritative. */
1484 mutex_lock(&data->card->conf_mutex);
1485 data->card->options.sbp.role = entry->role;
1486 mutex_unlock(&data->card->conf_mutex);
1487
1488 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1489 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1490 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1491 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1492 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1493 "<INVALID>");
1494 snprintf(env_state, sizeof(env_state), "STATE=%s",
1495 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1496 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1497 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1498 "<INVALID>");
1499 kobject_uevent_env(&data->card->gdev->dev.kobj,
1500 KOBJ_CHANGE, env);
1501 kfree(data);
1502 }
1503
1504 static void qeth_bridge_state_change(struct qeth_card *card,
1505 struct qeth_ipa_cmd *cmd)
1506 {
1507 struct qeth_sbp_state_change *qports =
1508 &cmd->data.sbp.data.state_change;
1509 struct qeth_bridge_state_data *data;
1510 int extrasize;
1511
1512 QETH_CARD_TEXT(card, 2, "brstchng");
1513 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1514 QETH_CARD_TEXT_(card, 2, "BPsz%.8d", qports->entry_length);
1515 return;
1516 }
1517 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1518 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1519 GFP_ATOMIC);
1520 if (!data) {
1521 QETH_CARD_TEXT(card, 2, "BPSalloc");
1522 return;
1523 }
1524 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1525 data->card = card;
1526 memcpy(&data->qports, qports,
1527 sizeof(struct qeth_sbp_state_change) + extrasize);
1528 queue_work(qeth_wq, &data->worker);
1529 }
1530
1531 struct qeth_bridge_host_data {
1532 struct work_struct worker;
1533 struct qeth_card *card;
1534 struct qeth_ipacmd_addr_change hostevs;
1535 };
1536
1537 static void qeth_bridge_host_event_worker(struct work_struct *work)
1538 {
1539 struct qeth_bridge_host_data *data =
1540 container_of(work, struct qeth_bridge_host_data, worker);
1541 int i;
1542
1543 if (data->hostevs.lost_event_mask) {
1544 dev_info(&data->card->gdev->dev,
1545 "Address notification from the HiperSockets Bridge Port stopped %s (%s)\n",
1546 data->card->dev->name,
1547 (data->hostevs.lost_event_mask == 0x01)
1548 ? "Overflow"
1549 : (data->hostevs.lost_event_mask == 0x02)
1550 ? "Bridge port state change"
1551 : "Unknown reason");
1552 mutex_lock(&data->card->conf_mutex);
1553 data->card->options.sbp.hostnotification = 0;
1554 mutex_unlock(&data->card->conf_mutex);
1555 qeth_bridge_emit_host_event(data->card, anev_abort,
1556 0, NULL, NULL);
1557 } else
1558 for (i = 0; i < data->hostevs.num_entries; i++) {
1559 struct qeth_ipacmd_addr_change_entry *entry =
1560 &data->hostevs.entry[i];
1561 qeth_bridge_emit_host_event(data->card,
1562 anev_reg_unreg,
1563 entry->change_code,
1564 &entry->token, &entry->addr_lnid);
1565 }
1566 kfree(data);
1567 }
1568
1569 static void qeth_bridge_host_event(struct qeth_card *card,
1570 struct qeth_ipa_cmd *cmd)
1571 {
1572 struct qeth_ipacmd_addr_change *hostevs =
1573 &cmd->data.addrchange;
1574 struct qeth_bridge_host_data *data;
1575 int extrasize;
1576
1577 QETH_CARD_TEXT(card, 2, "brhostev");
1578 if (cmd->hdr.return_code != 0x0000) {
1579 if (cmd->hdr.return_code == 0x0010) {
1580 if (hostevs->lost_event_mask == 0x00)
1581 hostevs->lost_event_mask = 0xff;
1582 } else {
1583 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1584 cmd->hdr.return_code);
1585 return;
1586 }
1587 }
1588 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1589 hostevs->num_entries;
1590 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1591 GFP_ATOMIC);
1592 if (!data) {
1593 QETH_CARD_TEXT(card, 2, "BPHalloc");
1594 return;
1595 }
1596 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1597 data->card = card;
1598 memcpy(&data->hostevs, hostevs,
1599 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1600 queue_work(qeth_wq, &data->worker);
1601 }
1602
1603 /* SETBRIDGEPORT support; sending commands */
1604
1605 struct _qeth_sbp_cbctl {
1606 u16 ipa_rc;
1607 u16 cmd_rc;
1608 union {
1609 u32 supported;
1610 struct {
1611 enum qeth_sbp_roles *role;
1612 enum qeth_sbp_states *state;
1613 } qports;
1614 } data;
1615 };
1616
1617 /**
1618 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1619 * @card: qeth_card structure pointer, for debug messages.
1620 * @cbctl: state structure with hardware return codes.
1621 * @setcmd: IPA command code
1622 *
1623 * Returns negative errno-compatible error indication or 0 on success.
1624 */
1625 static int qeth_bridgeport_makerc(struct qeth_card *card,
1626 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1627 {
1628 int rc;
1629
1630 switch (cbctl->ipa_rc) {
1631 case IPA_RC_SUCCESS:
1632 switch (cbctl->cmd_rc) {
1633 case 0x0000:
1634 rc = 0;
1635 break;
1636 case 0x0004:
1637 rc = -ENOSYS;
1638 break;
1639 case 0x000C: /* Not configured as bridge Port */
1640 rc = -ENODEV; /* maybe not the best code here? */
1641 dev_err(&card->gdev->dev,
1642 "The HiperSockets device is not configured as a Bridge Port\n");
1643 break;
1644 case 0x0014: /* Another device is Primary */
1645 switch (setcmd) {
1646 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1647 rc = -EEXIST;
1648 dev_err(&card->gdev->dev,
1649 "The HiperSockets LAN already has a primary Bridge Port\n");
1650 break;
1651 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1652 rc = -EBUSY;
1653 dev_err(&card->gdev->dev,
1654 "The HiperSockets device is already a primary Bridge Port\n");
1655 break;
1656 default:
1657 rc = -EIO;
1658 }
1659 break;
1660 case 0x0018: /* This device is currently Secondary */
1661 rc = -EBUSY;
1662 dev_err(&card->gdev->dev,
1663 "The HiperSockets device is already a secondary Bridge Port\n");
1664 break;
1665 case 0x001C: /* Limit for Secondary devices reached */
1666 rc = -EEXIST;
1667 dev_err(&card->gdev->dev,
1668 "The HiperSockets LAN cannot have more secondary Bridge Ports\n");
1669 break;
1670 case 0x0024: /* This device is currently Primary */
1671 rc = -EBUSY;
1672 dev_err(&card->gdev->dev,
1673 "The HiperSockets device is already a primary Bridge Port\n");
1674 break;
1675 case 0x0020: /* Not authorized by zManager */
1676 rc = -EACCES;
1677 dev_err(&card->gdev->dev,
1678 "The HiperSockets device is not authorized to be a Bridge Port\n");
1679 break;
1680 default:
1681 rc = -EIO;
1682 }
1683 break;
1684 case IPA_RC_NOTSUPP:
1685 rc = -ENOSYS;
1686 break;
1687 case IPA_RC_UNSUPPORTED_COMMAND:
1688 rc = -ENOSYS;
1689 break;
1690 default:
1691 rc = -EIO;
1692 }
1693 if (rc) {
1694 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1695 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1696 }
1697 return rc;
1698 }
1699
1700 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1701 struct qeth_reply *reply, unsigned long data)
1702 {
1703 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1704 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1705 QETH_CARD_TEXT(card, 2, "brqsupcb");
1706 cbctl->ipa_rc = cmd->hdr.return_code;
1707 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1708 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1709 cbctl->data.supported =
1710 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1711 } else {
1712 cbctl->data.supported = 0;
1713 }
1714 return 0;
1715 }
1716
1717 /**
1718 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1719 * @card: qeth_card structure pointer.
1720 *
1721 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1722 * strucutre: card->options.sbp.supported_funcs.
1723 */
1724 static void qeth_bridgeport_query_support(struct qeth_card *card)
1725 {
1726 struct qeth_cmd_buffer *iob;
1727 struct qeth_ipa_cmd *cmd;
1728 struct _qeth_sbp_cbctl cbctl;
1729
1730 QETH_CARD_TEXT(card, 2, "brqsuppo");
1731 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1732 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1733 cmd->data.sbp.hdr.cmdlength =
1734 sizeof(struct qeth_ipacmd_sbp_hdr) +
1735 sizeof(struct qeth_sbp_query_cmds_supp);
1736 cmd->data.sbp.hdr.command_code =
1737 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1738 cmd->data.sbp.hdr.used_total = 1;
1739 cmd->data.sbp.hdr.seq_no = 1;
1740 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1741 (void *)&cbctl) ||
1742 qeth_bridgeport_makerc(card, &cbctl,
1743 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1744 /* non-zero makerc signifies failure, and produce messages */
1745 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1746 return;
1747 }
1748 card->options.sbp.supported_funcs = cbctl.data.supported;
1749 }
1750
1751 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1752 struct qeth_reply *reply, unsigned long data)
1753 {
1754 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1755 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1756 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1757
1758 QETH_CARD_TEXT(card, 2, "brqprtcb");
1759 cbctl->ipa_rc = cmd->hdr.return_code;
1760 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1761 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1762 return 0;
1763 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1764 cbctl->cmd_rc = 0xffff;
1765 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1766 return 0;
1767 }
1768 /* first entry contains the state of the local port */
1769 if (qports->num_entries > 0) {
1770 if (cbctl->data.qports.role)
1771 *cbctl->data.qports.role = qports->entry[0].role;
1772 if (cbctl->data.qports.state)
1773 *cbctl->data.qports.state = qports->entry[0].state;
1774 }
1775 return 0;
1776 }
1777
1778 /**
1779 * qeth_bridgeport_query_ports() - query local bridgeport status.
1780 * @card: qeth_card structure pointer.
1781 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1782 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1783 *
1784 * Returns negative errno-compatible error indication or 0 on success.
1785 *
1786 * 'role' and 'state' are not updated in case of hardware operation failure.
1787 */
1788 int qeth_bridgeport_query_ports(struct qeth_card *card,
1789 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1790 {
1791 int rc = 0;
1792 struct qeth_cmd_buffer *iob;
1793 struct qeth_ipa_cmd *cmd;
1794 struct _qeth_sbp_cbctl cbctl = {
1795 .data = {
1796 .qports = {
1797 .role = role,
1798 .state = state,
1799 },
1800 },
1801 };
1802
1803 QETH_CARD_TEXT(card, 2, "brqports");
1804 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1805 return -EOPNOTSUPP;
1806 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1807 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1808 cmd->data.sbp.hdr.cmdlength =
1809 sizeof(struct qeth_ipacmd_sbp_hdr);
1810 cmd->data.sbp.hdr.command_code =
1811 IPA_SBP_QUERY_BRIDGE_PORTS;
1812 cmd->data.sbp.hdr.used_total = 1;
1813 cmd->data.sbp.hdr.seq_no = 1;
1814 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1815 (void *)&cbctl);
1816 if (rc)
1817 return rc;
1818 rc = qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1819 if (rc)
1820 return rc;
1821 return 0;
1822 }
1823 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1824
1825 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1826 struct qeth_reply *reply, unsigned long data)
1827 {
1828 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1829 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1830 QETH_CARD_TEXT(card, 2, "brsetrcb");
1831 cbctl->ipa_rc = cmd->hdr.return_code;
1832 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1833 return 0;
1834 }
1835
1836 /**
1837 * qeth_bridgeport_setrole() - Assign primary role to the port.
1838 * @card: qeth_card structure pointer.
1839 * @role: Role to assign.
1840 *
1841 * Returns negative errno-compatible error indication or 0 on success.
1842 */
1843 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1844 {
1845 int rc = 0;
1846 int cmdlength;
1847 struct qeth_cmd_buffer *iob;
1848 struct qeth_ipa_cmd *cmd;
1849 struct _qeth_sbp_cbctl cbctl;
1850 enum qeth_ipa_sbp_cmd setcmd;
1851
1852 QETH_CARD_TEXT(card, 2, "brsetrol");
1853 switch (role) {
1854 case QETH_SBP_ROLE_NONE:
1855 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1856 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1857 sizeof(struct qeth_sbp_reset_role);
1858 break;
1859 case QETH_SBP_ROLE_PRIMARY:
1860 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1861 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1862 sizeof(struct qeth_sbp_set_primary);
1863 break;
1864 case QETH_SBP_ROLE_SECONDARY:
1865 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1866 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1867 sizeof(struct qeth_sbp_set_secondary);
1868 break;
1869 default:
1870 return -EINVAL;
1871 }
1872 if (!(card->options.sbp.supported_funcs & setcmd))
1873 return -EOPNOTSUPP;
1874 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1875 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1876 cmd->data.sbp.hdr.cmdlength = cmdlength;
1877 cmd->data.sbp.hdr.command_code = setcmd;
1878 cmd->data.sbp.hdr.used_total = 1;
1879 cmd->data.sbp.hdr.seq_no = 1;
1880 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1881 (void *)&cbctl);
1882 if (rc)
1883 return rc;
1884 rc = qeth_bridgeport_makerc(card, &cbctl, setcmd);
1885 return rc;
1886 }
1887
1888 /**
1889 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1890 * @card: qeth_card structure pointer, for debug messages.
1891 *
1892 * Returns negative errno-compatible error indication or 0 on success.
1893 */
1894 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1895 {
1896 int rc;
1897
1898 if (pnso_rc == 0)
1899 switch (response) {
1900 case 0x0001:
1901 rc = 0;
1902 break;
1903 case 0x0004:
1904 case 0x0100:
1905 case 0x0106:
1906 rc = -ENOSYS;
1907 dev_err(&card->gdev->dev,
1908 "Setting address notification failed\n");
1909 break;
1910 case 0x0107:
1911 rc = -EAGAIN;
1912 break;
1913 default:
1914 rc = -EIO;
1915 }
1916 else
1917 rc = -EIO;
1918
1919 if (rc) {
1920 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1921 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1922 }
1923 return rc;
1924 }
1925
1926 static void qeth_bridgeport_an_set_cb(void *priv,
1927 enum qdio_brinfo_entry_type type, void *entry)
1928 {
1929 struct qeth_card *card = (struct qeth_card *)priv;
1930 struct qdio_brinfo_entry_l2 *l2entry;
1931 u8 code;
1932
1933 if (type != l2_addr_lnid) {
1934 WARN_ON_ONCE(1);
1935 return;
1936 }
1937
1938 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1939 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1940 if (l2entry->addr_lnid.lnid)
1941 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1942 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1943 (struct net_if_token *)&l2entry->nit,
1944 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1945 }
1946
1947 /**
1948 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1949 * @card: qeth_card structure pointer.
1950 * @enable: 0 - disable, non-zero - enable notifications
1951 *
1952 * Returns negative errno-compatible error indication or 0 on success.
1953 *
1954 * On enable, emits a series of address notifications udev events for all
1955 * currently registered hosts.
1956 */
1957 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1958 {
1959 int rc;
1960 u16 response;
1961 struct ccw_device *ddev;
1962 struct subchannel_id schid;
1963
1964 if (!card)
1965 return -EINVAL;
1966 if (!card->options.sbp.supported_funcs)
1967 return -EOPNOTSUPP;
1968 ddev = CARD_DDEV(card);
1969 ccw_device_get_schid(ddev, &schid);
1970
1971 if (enable) {
1972 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1973 rc = qdio_pnso_brinfo(schid, 1, &response,
1974 qeth_bridgeport_an_set_cb, card);
1975 } else
1976 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
1977 return qeth_anset_makerc(card, rc, response);
1978 }
1979 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
1980
1981 module_init(qeth_l2_init);
1982 module_exit(qeth_l2_exit);
1983 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1984 MODULE_DESCRIPTION("qeth layer 2 discipline");
1985 MODULE_LICENSE("GPL");
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