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[mirror_ubuntu-jammy-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 ipv, 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 ipv = qeth_get_ip_version(skb);
729 int cast_type = qeth_l2_get_cast_type(card, skb);
730 struct qeth_qdio_out_q *queue = card->qdio.out_qs
731 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
732 int tx_bytes = skb->len;
733 int data_offset = -1;
734 int elements_needed = 0;
735 int hd_len = 0;
736
737 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
738 card->stats.tx_carrier_errors++;
739 goto tx_drop;
740 }
741
742 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
743 (skb->protocol == htons(ETH_P_IPV6)))
744 goto tx_drop;
745
746 if (card->options.performance_stats) {
747 card->perf_stats.outbound_cnt++;
748 card->perf_stats.outbound_start_time = qeth_get_micros();
749 }
750 netif_stop_queue(dev);
751
752 if (card->info.type == QETH_CARD_TYPE_OSN)
753 hdr = (struct qeth_hdr *)skb->data;
754 else {
755 if (card->info.type == QETH_CARD_TYPE_IQD) {
756 new_skb = skb;
757 data_offset = ETH_HLEN;
758 hd_len = ETH_HLEN;
759 hdr = kmem_cache_alloc(qeth_core_header_cache,
760 GFP_ATOMIC);
761 if (!hdr)
762 goto tx_drop;
763 elements_needed++;
764 skb_reset_mac_header(new_skb);
765 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
766 hdr->hdr.l2.pkt_length = new_skb->len;
767 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
768 skb_mac_header(new_skb), ETH_HLEN);
769 } else {
770 /* create a clone with writeable headroom */
771 new_skb = skb_realloc_headroom(skb,
772 sizeof(struct qeth_hdr));
773 if (!new_skb)
774 goto tx_drop;
775 hdr = (struct qeth_hdr *)skb_push(new_skb,
776 sizeof(struct qeth_hdr));
777 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
778 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
779 }
780 }
781
782 elements = qeth_get_elements_no(card, new_skb, elements_needed);
783 if (!elements) {
784 if (data_offset >= 0)
785 kmem_cache_free(qeth_core_header_cache, hdr);
786 goto tx_drop;
787 }
788
789 if (card->info.type != QETH_CARD_TYPE_IQD) {
790 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
791 sizeof(struct qeth_hdr_layer2)))
792 goto tx_drop;
793 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
794 elements);
795 } else
796 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
797 elements, data_offset, hd_len);
798 if (!rc) {
799 card->stats.tx_packets++;
800 card->stats.tx_bytes += tx_bytes;
801 if (new_skb != skb)
802 dev_kfree_skb_any(skb);
803 rc = NETDEV_TX_OK;
804 } else {
805 if (data_offset >= 0)
806 kmem_cache_free(qeth_core_header_cache, hdr);
807
808 if (rc == -EBUSY) {
809 if (new_skb != skb)
810 dev_kfree_skb_any(new_skb);
811 return NETDEV_TX_BUSY;
812 } else
813 goto tx_drop;
814 }
815
816 netif_wake_queue(dev);
817 if (card->options.performance_stats)
818 card->perf_stats.outbound_time += qeth_get_micros() -
819 card->perf_stats.outbound_start_time;
820 return rc;
821
822 tx_drop:
823 card->stats.tx_dropped++;
824 card->stats.tx_errors++;
825 if ((new_skb != skb) && new_skb)
826 dev_kfree_skb_any(new_skb);
827 dev_kfree_skb_any(skb);
828 netif_wake_queue(dev);
829 return NETDEV_TX_OK;
830 }
831
832 static int __qeth_l2_open(struct net_device *dev)
833 {
834 struct qeth_card *card = dev->ml_priv;
835 int rc = 0;
836
837 QETH_CARD_TEXT(card, 4, "qethopen");
838 if (card->state == CARD_STATE_UP)
839 return rc;
840 if (card->state != CARD_STATE_SOFTSETUP)
841 return -ENODEV;
842
843 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
844 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
845 QETH_CARD_TEXT(card, 4, "nomacadr");
846 return -EPERM;
847 }
848 card->data.state = CH_STATE_UP;
849 card->state = CARD_STATE_UP;
850 netif_start_queue(dev);
851
852 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
853 napi_enable(&card->napi);
854 napi_schedule(&card->napi);
855 } else
856 rc = -EIO;
857 return rc;
858 }
859
860 static int qeth_l2_open(struct net_device *dev)
861 {
862 struct qeth_card *card = dev->ml_priv;
863
864 QETH_CARD_TEXT(card, 5, "qethope_");
865 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
866 QETH_CARD_TEXT(card, 3, "openREC");
867 return -ERESTARTSYS;
868 }
869 return __qeth_l2_open(dev);
870 }
871
872 static int qeth_l2_stop(struct net_device *dev)
873 {
874 struct qeth_card *card = dev->ml_priv;
875
876 QETH_CARD_TEXT(card, 4, "qethstop");
877 netif_tx_disable(dev);
878 if (card->state == CARD_STATE_UP) {
879 card->state = CARD_STATE_SOFTSETUP;
880 napi_disable(&card->napi);
881 }
882 return 0;
883 }
884
885 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
886 {
887 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
888
889 qeth_l2_create_device_attributes(&gdev->dev);
890 INIT_LIST_HEAD(&card->vid_list);
891 INIT_LIST_HEAD(&card->mc_list);
892 card->options.layer2 = 1;
893 card->info.hwtrap = 0;
894 return 0;
895 }
896
897 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
898 {
899 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
900
901 qeth_l2_remove_device_attributes(&cgdev->dev);
902 qeth_set_allowed_threads(card, 0, 1);
903 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
904
905 if (cgdev->state == CCWGROUP_ONLINE)
906 qeth_l2_set_offline(cgdev);
907
908 if (card->dev) {
909 unregister_netdev(card->dev);
910 card->dev = NULL;
911 }
912 return;
913 }
914
915 static const struct ethtool_ops qeth_l2_ethtool_ops = {
916 .get_link = ethtool_op_get_link,
917 .get_strings = qeth_core_get_strings,
918 .get_ethtool_stats = qeth_core_get_ethtool_stats,
919 .get_sset_count = qeth_core_get_sset_count,
920 .get_drvinfo = qeth_core_get_drvinfo,
921 .get_settings = qeth_core_ethtool_get_settings,
922 };
923
924 static const struct ethtool_ops qeth_l2_osn_ops = {
925 .get_strings = qeth_core_get_strings,
926 .get_ethtool_stats = qeth_core_get_ethtool_stats,
927 .get_sset_count = qeth_core_get_sset_count,
928 .get_drvinfo = qeth_core_get_drvinfo,
929 };
930
931 static const struct net_device_ops qeth_l2_netdev_ops = {
932 .ndo_open = qeth_l2_open,
933 .ndo_stop = qeth_l2_stop,
934 .ndo_get_stats = qeth_get_stats,
935 .ndo_start_xmit = qeth_l2_hard_start_xmit,
936 .ndo_validate_addr = eth_validate_addr,
937 .ndo_set_rx_mode = qeth_l2_set_multicast_list,
938 .ndo_do_ioctl = qeth_l2_do_ioctl,
939 .ndo_set_mac_address = qeth_l2_set_mac_address,
940 .ndo_change_mtu = qeth_change_mtu,
941 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
942 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
943 .ndo_tx_timeout = qeth_tx_timeout,
944 };
945
946 static int qeth_l2_setup_netdev(struct qeth_card *card)
947 {
948 switch (card->info.type) {
949 case QETH_CARD_TYPE_IQD:
950 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
951 break;
952 case QETH_CARD_TYPE_OSN:
953 card->dev = alloc_netdev(0, "osn%d", ether_setup);
954 card->dev->flags |= IFF_NOARP;
955 break;
956 default:
957 card->dev = alloc_etherdev(0);
958 }
959
960 if (!card->dev)
961 return -ENODEV;
962
963 card->dev->ml_priv = card;
964 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
965 card->dev->mtu = card->info.initial_mtu;
966 card->dev->netdev_ops = &qeth_l2_netdev_ops;
967 if (card->info.type != QETH_CARD_TYPE_OSN)
968 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
969 else
970 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
971 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
972 card->info.broadcast_capable = 1;
973 qeth_l2_request_initial_mac(card);
974 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
975 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
976 return register_netdev(card->dev);
977 }
978
979 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
980 {
981 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
982 int rc = 0;
983 enum qeth_card_states recover_flag;
984
985 mutex_lock(&card->discipline_mutex);
986 mutex_lock(&card->conf_mutex);
987 QETH_DBF_TEXT(SETUP, 2, "setonlin");
988 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
989
990 recover_flag = card->state;
991 rc = qeth_core_hardsetup_card(card);
992 if (rc) {
993 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
994 rc = -ENODEV;
995 goto out_remove;
996 }
997 qeth_bridgeport_query_support(card);
998 if (card->options.sbp.supported_funcs)
999 dev_info(&card->gdev->dev,
1000 "The device represents a HiperSockets Bridge Capable Port\n");
1001 qeth_trace_features(card);
1002
1003 if (!card->dev && qeth_l2_setup_netdev(card)) {
1004 rc = -ENODEV;
1005 goto out_remove;
1006 }
1007
1008 if (card->info.type != QETH_CARD_TYPE_OSN)
1009 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1010
1011 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1012 if (card->info.hwtrap &&
1013 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1014 card->info.hwtrap = 0;
1015 } else
1016 card->info.hwtrap = 0;
1017
1018 qeth_l2_setup_bridgeport_attrs(card);
1019
1020 card->state = CARD_STATE_HARDSETUP;
1021 memset(&card->rx, 0, sizeof(struct qeth_rx));
1022 qeth_print_status_message(card);
1023
1024 /* softsetup */
1025 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1026
1027 rc = qeth_send_startlan(card);
1028 if (rc) {
1029 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1030 if (rc == 0xe080) {
1031 dev_warn(&card->gdev->dev,
1032 "The LAN is offline\n");
1033 card->lan_online = 0;
1034 goto contin;
1035 }
1036 rc = -ENODEV;
1037 goto out_remove;
1038 } else
1039 card->lan_online = 1;
1040
1041 contin:
1042 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1043 (card->info.type == QETH_CARD_TYPE_OSX)) {
1044 /* configure isolation level */
1045 rc = qeth_set_access_ctrl_online(card, 0);
1046 if (rc) {
1047 rc = -ENODEV;
1048 goto out_remove;
1049 }
1050 }
1051
1052 if (card->info.type != QETH_CARD_TYPE_OSN &&
1053 card->info.type != QETH_CARD_TYPE_OSM)
1054 qeth_l2_process_vlans(card);
1055
1056 netif_tx_disable(card->dev);
1057
1058 rc = qeth_init_qdio_queues(card);
1059 if (rc) {
1060 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1061 rc = -ENODEV;
1062 goto out_remove;
1063 }
1064 card->state = CARD_STATE_SOFTSETUP;
1065 if (card->lan_online)
1066 netif_carrier_on(card->dev);
1067 else
1068 netif_carrier_off(card->dev);
1069
1070 qeth_set_allowed_threads(card, 0xffffffff, 0);
1071 if (recover_flag == CARD_STATE_RECOVER) {
1072 if (recovery_mode &&
1073 card->info.type != QETH_CARD_TYPE_OSN) {
1074 __qeth_l2_open(card->dev);
1075 } else {
1076 rtnl_lock();
1077 dev_open(card->dev);
1078 rtnl_unlock();
1079 }
1080 /* this also sets saved unicast addresses */
1081 qeth_l2_set_multicast_list(card->dev);
1082 }
1083 /* let user_space know that device is online */
1084 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1085 mutex_unlock(&card->conf_mutex);
1086 mutex_unlock(&card->discipline_mutex);
1087 return 0;
1088
1089 out_remove:
1090 qeth_l2_stop_card(card, 0);
1091 ccw_device_set_offline(CARD_DDEV(card));
1092 ccw_device_set_offline(CARD_WDEV(card));
1093 ccw_device_set_offline(CARD_RDEV(card));
1094 if (recover_flag == CARD_STATE_RECOVER)
1095 card->state = CARD_STATE_RECOVER;
1096 else
1097 card->state = CARD_STATE_DOWN;
1098 mutex_unlock(&card->conf_mutex);
1099 mutex_unlock(&card->discipline_mutex);
1100 return rc;
1101 }
1102
1103 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1104 {
1105 return __qeth_l2_set_online(gdev, 0);
1106 }
1107
1108 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1109 int recovery_mode)
1110 {
1111 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1112 int rc = 0, rc2 = 0, rc3 = 0;
1113 enum qeth_card_states recover_flag;
1114
1115 mutex_lock(&card->discipline_mutex);
1116 mutex_lock(&card->conf_mutex);
1117 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1118 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1119
1120 if (card->dev && netif_carrier_ok(card->dev))
1121 netif_carrier_off(card->dev);
1122 recover_flag = card->state;
1123 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1124 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1125 card->info.hwtrap = 1;
1126 }
1127 qeth_l2_stop_card(card, recovery_mode);
1128 rc = ccw_device_set_offline(CARD_DDEV(card));
1129 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1130 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1131 if (!rc)
1132 rc = (rc2) ? rc2 : rc3;
1133 if (rc)
1134 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1135 if (recover_flag == CARD_STATE_UP)
1136 card->state = CARD_STATE_RECOVER;
1137 /* let user_space know that device is offline */
1138 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1139 mutex_unlock(&card->conf_mutex);
1140 mutex_unlock(&card->discipline_mutex);
1141 return 0;
1142 }
1143
1144 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1145 {
1146 return __qeth_l2_set_offline(cgdev, 0);
1147 }
1148
1149 static int qeth_l2_recover(void *ptr)
1150 {
1151 struct qeth_card *card;
1152 int rc = 0;
1153
1154 card = (struct qeth_card *) ptr;
1155 QETH_CARD_TEXT(card, 2, "recover1");
1156 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1157 return 0;
1158 QETH_CARD_TEXT(card, 2, "recover2");
1159 dev_warn(&card->gdev->dev,
1160 "A recovery process has been started for the device\n");
1161 qeth_set_recovery_task(card);
1162 __qeth_l2_set_offline(card->gdev, 1);
1163 rc = __qeth_l2_set_online(card->gdev, 1);
1164 if (!rc)
1165 dev_info(&card->gdev->dev,
1166 "Device successfully recovered!\n");
1167 else {
1168 qeth_close_dev(card);
1169 dev_warn(&card->gdev->dev, "The qeth device driver "
1170 "failed to recover an error on the device\n");
1171 }
1172 qeth_clear_recovery_task(card);
1173 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1174 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1175 return 0;
1176 }
1177
1178 static int __init qeth_l2_init(void)
1179 {
1180 pr_info("register layer 2 discipline\n");
1181 return 0;
1182 }
1183
1184 static void __exit qeth_l2_exit(void)
1185 {
1186 pr_info("unregister layer 2 discipline\n");
1187 }
1188
1189 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1190 {
1191 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1192 qeth_set_allowed_threads(card, 0, 1);
1193 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1194 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1195 qeth_qdio_clear_card(card, 0);
1196 qeth_clear_qdio_buffers(card);
1197 }
1198
1199 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1200 {
1201 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1202
1203 if (card->dev)
1204 netif_device_detach(card->dev);
1205 qeth_set_allowed_threads(card, 0, 1);
1206 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1207 if (gdev->state == CCWGROUP_OFFLINE)
1208 return 0;
1209 if (card->state == CARD_STATE_UP) {
1210 if (card->info.hwtrap)
1211 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1212 __qeth_l2_set_offline(card->gdev, 1);
1213 } else
1214 __qeth_l2_set_offline(card->gdev, 0);
1215 return 0;
1216 }
1217
1218 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1219 {
1220 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1221 int rc = 0;
1222
1223 if (gdev->state == CCWGROUP_OFFLINE)
1224 goto out;
1225
1226 if (card->state == CARD_STATE_RECOVER) {
1227 rc = __qeth_l2_set_online(card->gdev, 1);
1228 if (rc) {
1229 rtnl_lock();
1230 dev_close(card->dev);
1231 rtnl_unlock();
1232 }
1233 } else
1234 rc = __qeth_l2_set_online(card->gdev, 0);
1235 out:
1236 qeth_set_allowed_threads(card, 0xffffffff, 0);
1237 if (card->dev)
1238 netif_device_attach(card->dev);
1239 if (rc)
1240 dev_warn(&card->gdev->dev, "The qeth device driver "
1241 "failed to recover an error on the device\n");
1242 return rc;
1243 }
1244
1245 /* Returns zero if the command is successfully "consumed" */
1246 static int qeth_l2_control_event(struct qeth_card *card,
1247 struct qeth_ipa_cmd *cmd)
1248 {
1249 switch (cmd->hdr.command) {
1250 case IPA_CMD_SETBRIDGEPORT:
1251 if (cmd->data.sbp.hdr.command_code ==
1252 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1253 qeth_bridge_state_change(card, cmd);
1254 return 0;
1255 } else
1256 return 1;
1257 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1258 qeth_bridge_host_event(card, cmd);
1259 return 0;
1260 default:
1261 return 1;
1262 }
1263 }
1264
1265 struct qeth_discipline qeth_l2_discipline = {
1266 .start_poll = qeth_qdio_start_poll,
1267 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1268 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1269 .recover = qeth_l2_recover,
1270 .setup = qeth_l2_probe_device,
1271 .remove = qeth_l2_remove_device,
1272 .set_online = qeth_l2_set_online,
1273 .set_offline = qeth_l2_set_offline,
1274 .shutdown = qeth_l2_shutdown,
1275 .freeze = qeth_l2_pm_suspend,
1276 .thaw = qeth_l2_pm_resume,
1277 .restore = qeth_l2_pm_resume,
1278 .control_event_handler = qeth_l2_control_event,
1279 };
1280 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1281
1282 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1283 struct qeth_cmd_buffer *iob)
1284 {
1285 unsigned long flags;
1286 int rc = 0;
1287
1288 QETH_CARD_TEXT(card, 5, "osndctrd");
1289
1290 wait_event(card->wait_q,
1291 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1292 qeth_prepare_control_data(card, len, iob);
1293 QETH_CARD_TEXT(card, 6, "osnoirqp");
1294 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1295 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1296 (addr_t) iob, 0, 0);
1297 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1298 if (rc) {
1299 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1300 "ccw_device_start rc = %i\n", rc);
1301 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1302 qeth_release_buffer(iob->channel, iob);
1303 atomic_set(&card->write.irq_pending, 0);
1304 wake_up(&card->wait_q);
1305 }
1306 return rc;
1307 }
1308
1309 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1310 struct qeth_cmd_buffer *iob, int data_len)
1311 {
1312 u16 s1, s2;
1313
1314 QETH_CARD_TEXT(card, 4, "osndipa");
1315
1316 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1317 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1318 s2 = (u16)data_len;
1319 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1320 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1321 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1322 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1323 return qeth_osn_send_control_data(card, s1, iob);
1324 }
1325
1326 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1327 {
1328 struct qeth_cmd_buffer *iob;
1329 struct qeth_card *card;
1330 int rc;
1331
1332 if (!dev)
1333 return -ENODEV;
1334 card = dev->ml_priv;
1335 if (!card)
1336 return -ENODEV;
1337 QETH_CARD_TEXT(card, 2, "osnsdmc");
1338 if ((card->state != CARD_STATE_UP) &&
1339 (card->state != CARD_STATE_SOFTSETUP))
1340 return -ENODEV;
1341 iob = qeth_wait_for_buffer(&card->write);
1342 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1343 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1344 return rc;
1345 }
1346 EXPORT_SYMBOL(qeth_osn_assist);
1347
1348 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1349 int (*assist_cb)(struct net_device *, void *),
1350 int (*data_cb)(struct sk_buff *))
1351 {
1352 struct qeth_card *card;
1353
1354 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1355 if (*dev == NULL)
1356 return -ENODEV;
1357 card = (*dev)->ml_priv;
1358 if (!card)
1359 return -ENODEV;
1360 QETH_CARD_TEXT(card, 2, "osnreg");
1361 if ((assist_cb == NULL) || (data_cb == NULL))
1362 return -EINVAL;
1363 card->osn_info.assist_cb = assist_cb;
1364 card->osn_info.data_cb = data_cb;
1365 return 0;
1366 }
1367 EXPORT_SYMBOL(qeth_osn_register);
1368
1369 void qeth_osn_deregister(struct net_device *dev)
1370 {
1371 struct qeth_card *card;
1372
1373 if (!dev)
1374 return;
1375 card = dev->ml_priv;
1376 if (!card)
1377 return;
1378 QETH_CARD_TEXT(card, 2, "osndereg");
1379 card->osn_info.assist_cb = NULL;
1380 card->osn_info.data_cb = NULL;
1381 return;
1382 }
1383 EXPORT_SYMBOL(qeth_osn_deregister);
1384
1385 /* SETBRIDGEPORT support, async notifications */
1386
1387 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1388
1389 /**
1390 * qeth_bridge_emit_host_event() - bridgeport address change notification
1391 * @card: qeth_card structure pointer, for udev events.
1392 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1393 * and reset token and addr_lnid are unused and may be NULL.
1394 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1395 * object, 0 - addition of an object.
1396 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1397 * @token: "network token" structure identifying physical address of the port.
1398 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1399 *
1400 * This function is called when registrations and deregistrations are
1401 * reported by the hardware, and also when notifications are enabled -
1402 * for all currently registered addresses.
1403 */
1404 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1405 enum qeth_an_event_type evtype,
1406 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1407 {
1408 char str[7][32];
1409 char *env[8];
1410 int i = 0;
1411
1412 switch (evtype) {
1413 case anev_reg_unreg:
1414 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1415 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1416 ? "deregister" : "register");
1417 env[i] = str[i]; i++;
1418 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1419 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1420 addr_lnid->lnid);
1421 env[i] = str[i]; i++;
1422 }
1423 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1424 snprintf(str[i], sizeof(str[i]), "MAC=%pM6",
1425 &addr_lnid->mac);
1426 env[i] = str[i]; i++;
1427 }
1428 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1429 token->cssid, token->ssid, token->devnum);
1430 env[i] = str[i]; i++;
1431 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1432 env[i] = str[i]; i++;
1433 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1434 token->chpid);
1435 env[i] = str[i]; i++;
1436 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1437 env[i] = str[i]; i++;
1438 break;
1439 case anev_abort:
1440 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1441 env[i] = str[i]; i++;
1442 break;
1443 case anev_reset:
1444 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1445 env[i] = str[i]; i++;
1446 break;
1447 }
1448 env[i] = NULL;
1449 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1450 }
1451
1452 struct qeth_bridge_state_data {
1453 struct work_struct worker;
1454 struct qeth_card *card;
1455 struct qeth_sbp_state_change qports;
1456 };
1457
1458 static void qeth_bridge_state_change_worker(struct work_struct *work)
1459 {
1460 struct qeth_bridge_state_data *data =
1461 container_of(work, struct qeth_bridge_state_data, worker);
1462 /* We are only interested in the first entry - local port */
1463 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1464 char env_locrem[32];
1465 char env_role[32];
1466 char env_state[32];
1467 char *env[] = {
1468 env_locrem,
1469 env_role,
1470 env_state,
1471 NULL
1472 };
1473
1474 /* Role should not change by itself, but if it did, */
1475 /* information from the hardware is authoritative. */
1476 mutex_lock(&data->card->conf_mutex);
1477 data->card->options.sbp.role = entry->role;
1478 mutex_unlock(&data->card->conf_mutex);
1479
1480 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1481 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1482 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1483 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1484 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1485 "<INVALID>");
1486 snprintf(env_state, sizeof(env_state), "STATE=%s",
1487 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1488 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1489 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1490 "<INVALID>");
1491 kobject_uevent_env(&data->card->gdev->dev.kobj,
1492 KOBJ_CHANGE, env);
1493 kfree(data);
1494 }
1495
1496 static void qeth_bridge_state_change(struct qeth_card *card,
1497 struct qeth_ipa_cmd *cmd)
1498 {
1499 struct qeth_sbp_state_change *qports =
1500 &cmd->data.sbp.data.state_change;
1501 struct qeth_bridge_state_data *data;
1502 int extrasize;
1503
1504 QETH_CARD_TEXT(card, 2, "brstchng");
1505 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1506 QETH_CARD_TEXT_(card, 2, "BPsz%.8d", qports->entry_length);
1507 return;
1508 }
1509 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1510 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1511 GFP_ATOMIC);
1512 if (!data) {
1513 QETH_CARD_TEXT(card, 2, "BPSalloc");
1514 return;
1515 }
1516 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1517 data->card = card;
1518 memcpy(&data->qports, qports,
1519 sizeof(struct qeth_sbp_state_change) + extrasize);
1520 queue_work(qeth_wq, &data->worker);
1521 }
1522
1523 struct qeth_bridge_host_data {
1524 struct work_struct worker;
1525 struct qeth_card *card;
1526 struct qeth_ipacmd_addr_change hostevs;
1527 };
1528
1529 static void qeth_bridge_host_event_worker(struct work_struct *work)
1530 {
1531 struct qeth_bridge_host_data *data =
1532 container_of(work, struct qeth_bridge_host_data, worker);
1533 int i;
1534
1535 if (data->hostevs.lost_event_mask) {
1536 dev_info(&data->card->gdev->dev,
1537 "Address notification from the HiperSockets Bridge Port stopped %s (%s)\n",
1538 data->card->dev->name,
1539 (data->hostevs.lost_event_mask == 0x01)
1540 ? "Overflow"
1541 : (data->hostevs.lost_event_mask == 0x02)
1542 ? "Bridge port state change"
1543 : "Unknown reason");
1544 mutex_lock(&data->card->conf_mutex);
1545 data->card->options.sbp.hostnotification = 0;
1546 mutex_unlock(&data->card->conf_mutex);
1547 qeth_bridge_emit_host_event(data->card, anev_abort,
1548 0, NULL, NULL);
1549 } else
1550 for (i = 0; i < data->hostevs.num_entries; i++) {
1551 struct qeth_ipacmd_addr_change_entry *entry =
1552 &data->hostevs.entry[i];
1553 qeth_bridge_emit_host_event(data->card,
1554 anev_reg_unreg,
1555 entry->change_code,
1556 &entry->token, &entry->addr_lnid);
1557 }
1558 kfree(data);
1559 }
1560
1561 static void qeth_bridge_host_event(struct qeth_card *card,
1562 struct qeth_ipa_cmd *cmd)
1563 {
1564 struct qeth_ipacmd_addr_change *hostevs =
1565 &cmd->data.addrchange;
1566 struct qeth_bridge_host_data *data;
1567 int extrasize;
1568
1569 QETH_CARD_TEXT(card, 2, "brhostev");
1570 if (cmd->hdr.return_code != 0x0000) {
1571 if (cmd->hdr.return_code == 0x0010) {
1572 if (hostevs->lost_event_mask == 0x00)
1573 hostevs->lost_event_mask = 0xff;
1574 } else {
1575 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1576 cmd->hdr.return_code);
1577 return;
1578 }
1579 }
1580 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1581 hostevs->num_entries;
1582 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1583 GFP_ATOMIC);
1584 if (!data) {
1585 QETH_CARD_TEXT(card, 2, "BPHalloc");
1586 return;
1587 }
1588 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1589 data->card = card;
1590 memcpy(&data->hostevs, hostevs,
1591 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1592 queue_work(qeth_wq, &data->worker);
1593 }
1594
1595 /* SETBRIDGEPORT support; sending commands */
1596
1597 struct _qeth_sbp_cbctl {
1598 u16 ipa_rc;
1599 u16 cmd_rc;
1600 union {
1601 u32 supported;
1602 struct {
1603 enum qeth_sbp_roles *role;
1604 enum qeth_sbp_states *state;
1605 } qports;
1606 } data;
1607 };
1608
1609 /**
1610 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1611 * @card: qeth_card structure pointer, for debug messages.
1612 * @cbctl: state structure with hardware return codes.
1613 * @setcmd: IPA command code
1614 *
1615 * Returns negative errno-compatible error indication or 0 on success.
1616 */
1617 static int qeth_bridgeport_makerc(struct qeth_card *card,
1618 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1619 {
1620 int rc;
1621
1622 switch (cbctl->ipa_rc) {
1623 case IPA_RC_SUCCESS:
1624 switch (cbctl->cmd_rc) {
1625 case 0x0000:
1626 rc = 0;
1627 break;
1628 case 0x0004:
1629 rc = -ENOSYS;
1630 break;
1631 case 0x000C: /* Not configured as bridge Port */
1632 rc = -ENODEV; /* maybe not the best code here? */
1633 dev_err(&card->gdev->dev,
1634 "The HiperSockets device is not configured as a Bridge Port\n");
1635 break;
1636 case 0x0014: /* Another device is Primary */
1637 switch (setcmd) {
1638 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1639 rc = -EEXIST;
1640 dev_err(&card->gdev->dev,
1641 "The HiperSockets LAN already has a primary Bridge Port\n");
1642 break;
1643 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1644 rc = -EBUSY;
1645 dev_err(&card->gdev->dev,
1646 "The HiperSockets device is already a primary Bridge Port\n");
1647 break;
1648 default:
1649 rc = -EIO;
1650 }
1651 break;
1652 case 0x0018: /* This device is currently Secondary */
1653 rc = -EBUSY;
1654 dev_err(&card->gdev->dev,
1655 "The HiperSockets device is already a secondary Bridge Port\n");
1656 break;
1657 case 0x001C: /* Limit for Secondary devices reached */
1658 rc = -EEXIST;
1659 dev_err(&card->gdev->dev,
1660 "The HiperSockets LAN cannot have more secondary Bridge Ports\n");
1661 break;
1662 case 0x0024: /* This device is currently Primary */
1663 rc = -EBUSY;
1664 dev_err(&card->gdev->dev,
1665 "The HiperSockets device is already a primary Bridge Port\n");
1666 break;
1667 case 0x0020: /* Not authorized by zManager */
1668 rc = -EACCES;
1669 dev_err(&card->gdev->dev,
1670 "The HiperSockets device is not authorized to be a Bridge Port\n");
1671 break;
1672 default:
1673 rc = -EIO;
1674 }
1675 break;
1676 case IPA_RC_NOTSUPP:
1677 rc = -ENOSYS;
1678 break;
1679 case IPA_RC_UNSUPPORTED_COMMAND:
1680 rc = -ENOSYS;
1681 break;
1682 default:
1683 rc = -EIO;
1684 }
1685 if (rc) {
1686 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1687 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1688 }
1689 return rc;
1690 }
1691
1692 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1693 struct qeth_reply *reply, unsigned long data)
1694 {
1695 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1696 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1697 QETH_CARD_TEXT(card, 2, "brqsupcb");
1698 cbctl->ipa_rc = cmd->hdr.return_code;
1699 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1700 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1701 cbctl->data.supported =
1702 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1703 } else {
1704 cbctl->data.supported = 0;
1705 }
1706 return 0;
1707 }
1708
1709 /**
1710 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1711 * @card: qeth_card structure pointer.
1712 *
1713 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1714 * strucutre: card->options.sbp.supported_funcs.
1715 */
1716 static void qeth_bridgeport_query_support(struct qeth_card *card)
1717 {
1718 struct qeth_cmd_buffer *iob;
1719 struct qeth_ipa_cmd *cmd;
1720 struct _qeth_sbp_cbctl cbctl;
1721
1722 QETH_CARD_TEXT(card, 2, "brqsuppo");
1723 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1724 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1725 cmd->data.sbp.hdr.cmdlength =
1726 sizeof(struct qeth_ipacmd_sbp_hdr) +
1727 sizeof(struct qeth_sbp_query_cmds_supp);
1728 cmd->data.sbp.hdr.command_code =
1729 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1730 cmd->data.sbp.hdr.used_total = 1;
1731 cmd->data.sbp.hdr.seq_no = 1;
1732 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1733 (void *)&cbctl) ||
1734 qeth_bridgeport_makerc(card, &cbctl,
1735 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1736 /* non-zero makerc signifies failure, and produce messages */
1737 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1738 return;
1739 }
1740 card->options.sbp.supported_funcs = cbctl.data.supported;
1741 }
1742
1743 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1744 struct qeth_reply *reply, unsigned long data)
1745 {
1746 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1747 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1748 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1749
1750 QETH_CARD_TEXT(card, 2, "brqprtcb");
1751 cbctl->ipa_rc = cmd->hdr.return_code;
1752 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1753 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1754 return 0;
1755 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1756 cbctl->cmd_rc = 0xffff;
1757 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1758 return 0;
1759 }
1760 /* first entry contains the state of the local port */
1761 if (qports->num_entries > 0) {
1762 if (cbctl->data.qports.role)
1763 *cbctl->data.qports.role = qports->entry[0].role;
1764 if (cbctl->data.qports.state)
1765 *cbctl->data.qports.state = qports->entry[0].state;
1766 }
1767 return 0;
1768 }
1769
1770 /**
1771 * qeth_bridgeport_query_ports() - query local bridgeport status.
1772 * @card: qeth_card structure pointer.
1773 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1774 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1775 *
1776 * Returns negative errno-compatible error indication or 0 on success.
1777 *
1778 * 'role' and 'state' are not updated in case of hardware operation failure.
1779 */
1780 int qeth_bridgeport_query_ports(struct qeth_card *card,
1781 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1782 {
1783 int rc = 0;
1784 struct qeth_cmd_buffer *iob;
1785 struct qeth_ipa_cmd *cmd;
1786 struct _qeth_sbp_cbctl cbctl = {
1787 .data = {
1788 .qports = {
1789 .role = role,
1790 .state = state,
1791 },
1792 },
1793 };
1794
1795 QETH_CARD_TEXT(card, 2, "brqports");
1796 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1797 return -EOPNOTSUPP;
1798 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1799 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1800 cmd->data.sbp.hdr.cmdlength =
1801 sizeof(struct qeth_ipacmd_sbp_hdr);
1802 cmd->data.sbp.hdr.command_code =
1803 IPA_SBP_QUERY_BRIDGE_PORTS;
1804 cmd->data.sbp.hdr.used_total = 1;
1805 cmd->data.sbp.hdr.seq_no = 1;
1806 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1807 (void *)&cbctl);
1808 if (rc)
1809 return rc;
1810 rc = qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1811 if (rc)
1812 return rc;
1813 return 0;
1814 }
1815 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1816
1817 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1818 struct qeth_reply *reply, unsigned long data)
1819 {
1820 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1821 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1822 QETH_CARD_TEXT(card, 2, "brsetrcb");
1823 cbctl->ipa_rc = cmd->hdr.return_code;
1824 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1825 return 0;
1826 }
1827
1828 /**
1829 * qeth_bridgeport_setrole() - Assign primary role to the port.
1830 * @card: qeth_card structure pointer.
1831 * @role: Role to assign.
1832 *
1833 * Returns negative errno-compatible error indication or 0 on success.
1834 */
1835 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1836 {
1837 int rc = 0;
1838 int cmdlength;
1839 struct qeth_cmd_buffer *iob;
1840 struct qeth_ipa_cmd *cmd;
1841 struct _qeth_sbp_cbctl cbctl;
1842 enum qeth_ipa_sbp_cmd setcmd;
1843
1844 QETH_CARD_TEXT(card, 2, "brsetrol");
1845 switch (role) {
1846 case QETH_SBP_ROLE_NONE:
1847 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1848 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1849 sizeof(struct qeth_sbp_reset_role);
1850 break;
1851 case QETH_SBP_ROLE_PRIMARY:
1852 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1853 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1854 sizeof(struct qeth_sbp_set_primary);
1855 break;
1856 case QETH_SBP_ROLE_SECONDARY:
1857 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1858 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1859 sizeof(struct qeth_sbp_set_secondary);
1860 break;
1861 default:
1862 return -EINVAL;
1863 }
1864 if (!(card->options.sbp.supported_funcs & setcmd))
1865 return -EOPNOTSUPP;
1866 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1867 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1868 cmd->data.sbp.hdr.cmdlength = cmdlength;
1869 cmd->data.sbp.hdr.command_code = setcmd;
1870 cmd->data.sbp.hdr.used_total = 1;
1871 cmd->data.sbp.hdr.seq_no = 1;
1872 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1873 (void *)&cbctl);
1874 if (rc)
1875 return rc;
1876 rc = qeth_bridgeport_makerc(card, &cbctl, setcmd);
1877 return rc;
1878 }
1879
1880 /**
1881 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1882 * @card: qeth_card structure pointer, for debug messages.
1883 *
1884 * Returns negative errno-compatible error indication or 0 on success.
1885 */
1886 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1887 {
1888 int rc;
1889
1890 if (pnso_rc == 0)
1891 switch (response) {
1892 case 0x0001:
1893 rc = 0;
1894 break;
1895 case 0x0004:
1896 case 0x0100:
1897 case 0x0106:
1898 rc = -ENOSYS;
1899 dev_err(&card->gdev->dev,
1900 "Setting address notification failed\n");
1901 break;
1902 case 0x0107:
1903 rc = -EAGAIN;
1904 break;
1905 default:
1906 rc = -EIO;
1907 }
1908 else
1909 rc = -EIO;
1910
1911 if (rc) {
1912 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1913 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1914 }
1915 return rc;
1916 }
1917
1918 static void qeth_bridgeport_an_set_cb(void *priv,
1919 enum qdio_brinfo_entry_type type, void *entry)
1920 {
1921 struct qeth_card *card = (struct qeth_card *)priv;
1922 struct qdio_brinfo_entry_l2 *l2entry;
1923 u8 code;
1924
1925 if (type != l2_addr_lnid) {
1926 WARN_ON_ONCE(1);
1927 return;
1928 }
1929
1930 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1931 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1932 if (l2entry->addr_lnid.lnid)
1933 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1934 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1935 (struct net_if_token *)&l2entry->nit,
1936 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1937 }
1938
1939 /**
1940 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1941 * @card: qeth_card structure pointer.
1942 * @enable: 0 - disable, non-zero - enable notifications
1943 *
1944 * Returns negative errno-compatible error indication or 0 on success.
1945 *
1946 * On enable, emits a series of address notifications udev events for all
1947 * currently registered hosts.
1948 */
1949 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1950 {
1951 int rc;
1952 u16 response;
1953 struct ccw_device *ddev;
1954 struct subchannel_id schid;
1955
1956 if (!card)
1957 return -EINVAL;
1958 if (!card->options.sbp.supported_funcs)
1959 return -EOPNOTSUPP;
1960 ddev = CARD_DDEV(card);
1961 ccw_device_get_schid(ddev, &schid);
1962
1963 if (enable) {
1964 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1965 rc = qdio_pnso_brinfo(schid, 1, &response,
1966 qeth_bridgeport_an_set_cb, card);
1967 } else
1968 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
1969 return qeth_anset_makerc(card, rc, response);
1970 }
1971 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
1972
1973 module_init(qeth_l2_init);
1974 module_exit(qeth_l2_exit);
1975 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1976 MODULE_DESCRIPTION("qeth layer 2 discipline");
1977 MODULE_LICENSE("GPL");
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