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[mirror_ubuntu-zesty-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 #include <linux/hash.h>
23 #include <linux/hashtable.h>
24 #include <linux/string.h>
25 #include "qeth_core.h"
26 #include "qeth_l2.h"
27
28 static int qeth_l2_set_offline(struct ccwgroup_device *);
29 static int qeth_l2_stop(struct net_device *);
30 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
31 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
32 enum qeth_ipa_cmds);
33 static void qeth_l2_set_rx_mode(struct net_device *);
34 static int qeth_l2_recover(void *);
35 static void qeth_bridgeport_query_support(struct qeth_card *card);
36 static void qeth_bridge_state_change(struct qeth_card *card,
37 struct qeth_ipa_cmd *cmd);
38 static void qeth_bridge_host_event(struct qeth_card *card,
39 struct qeth_ipa_cmd *cmd);
40
41 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
42 {
43 struct qeth_card *card = dev->ml_priv;
44 struct mii_ioctl_data *mii_data;
45 int rc = 0;
46
47 if (!card)
48 return -ENODEV;
49
50 if (!qeth_card_hw_is_reachable(card))
51 return -ENODEV;
52
53 if (card->info.type == QETH_CARD_TYPE_OSN)
54 return -EPERM;
55
56 switch (cmd) {
57 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
58 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
59 break;
60 case SIOC_QETH_GET_CARD_TYPE:
61 if ((card->info.type == QETH_CARD_TYPE_OSD ||
62 card->info.type == QETH_CARD_TYPE_OSM ||
63 card->info.type == QETH_CARD_TYPE_OSX) &&
64 !card->info.guestlan)
65 return 1;
66 return 0;
67 break;
68 case SIOCGMIIPHY:
69 mii_data = if_mii(rq);
70 mii_data->phy_id = 0;
71 break;
72 case SIOCGMIIREG:
73 mii_data = if_mii(rq);
74 if (mii_data->phy_id != 0)
75 rc = -EINVAL;
76 else
77 mii_data->val_out = qeth_mdio_read(dev,
78 mii_data->phy_id, mii_data->reg_num);
79 break;
80 case SIOC_QETH_QUERY_OAT:
81 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
82 break;
83 default:
84 rc = -EOPNOTSUPP;
85 }
86 if (rc)
87 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
88 return rc;
89 }
90
91 static int qeth_l2_verify_dev(struct net_device *dev)
92 {
93 struct qeth_card *card;
94 unsigned long flags;
95 int rc = 0;
96
97 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
98 list_for_each_entry(card, &qeth_core_card_list.list, list) {
99 if (card->dev == dev) {
100 rc = QETH_REAL_CARD;
101 break;
102 }
103 }
104 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
105
106 return rc;
107 }
108
109 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
110 {
111 struct qeth_card *card;
112 struct net_device *ndev;
113 __u16 temp_dev_no;
114 unsigned long flags;
115 struct ccw_dev_id read_devid;
116
117 ndev = NULL;
118 memcpy(&temp_dev_no, read_dev_no, 2);
119 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
120 list_for_each_entry(card, &qeth_core_card_list.list, list) {
121 ccw_device_get_id(CARD_RDEV(card), &read_devid);
122 if (read_devid.devno == temp_dev_no) {
123 ndev = card->dev;
124 break;
125 }
126 }
127 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
128 return ndev;
129 }
130
131 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
132 {
133 int rc;
134
135 if (retcode)
136 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
137 switch (retcode) {
138 case IPA_RC_SUCCESS:
139 rc = 0;
140 break;
141 case IPA_RC_L2_UNSUPPORTED_CMD:
142 rc = -EOPNOTSUPP;
143 break;
144 case IPA_RC_L2_ADDR_TABLE_FULL:
145 rc = -ENOSPC;
146 break;
147 case IPA_RC_L2_DUP_MAC:
148 case IPA_RC_L2_DUP_LAYER3_MAC:
149 rc = -EEXIST;
150 break;
151 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
152 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
153 rc = -EPERM;
154 break;
155 case IPA_RC_L2_MAC_NOT_FOUND:
156 rc = -ENOENT;
157 break;
158 case -ENOMEM:
159 rc = -ENOMEM;
160 break;
161 default:
162 rc = -EIO;
163 break;
164 }
165 return rc;
166 }
167
168 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
169 {
170 int rc;
171
172 QETH_CARD_TEXT(card, 2, "L2Sgmac");
173 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
174 IPA_CMD_SETGMAC));
175 if (rc == -EEXIST)
176 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
177 mac, QETH_CARD_IFNAME(card));
178 else if (rc)
179 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
180 mac, QETH_CARD_IFNAME(card), rc);
181 return rc;
182 }
183
184 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
185 {
186 int rc;
187
188 QETH_CARD_TEXT(card, 2, "L2Dgmac");
189 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
190 IPA_CMD_DELGMAC));
191 if (rc)
192 QETH_DBF_MESSAGE(2,
193 "Could not delete group MAC %pM on %s: %d\n",
194 mac, QETH_CARD_IFNAME(card), rc);
195 return rc;
196 }
197
198 static inline u32 qeth_l2_mac_hash(const u8 *addr)
199 {
200 return get_unaligned((u32 *)(&addr[2]));
201 }
202
203 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
204 {
205
206 int rc;
207
208 if (mac->is_uc) {
209 rc = qeth_setdel_makerc(card,
210 qeth_l2_send_setdelmac(card, mac->mac_addr,
211 IPA_CMD_SETVMAC));
212 } else {
213 rc = qeth_setdel_makerc(card,
214 qeth_l2_send_setgroupmac(card, mac->mac_addr));
215 }
216 return rc;
217 }
218
219 static void qeth_l2_del_all_macs(struct qeth_card *card, int del)
220 {
221 struct qeth_mac *mac;
222 struct hlist_node *tmp;
223 int i;
224
225 spin_lock_bh(&card->mclock);
226 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
227 if (del) {
228 if (mac->is_uc)
229 qeth_l2_send_setdelmac(card, mac->mac_addr,
230 IPA_CMD_DELVMAC);
231 else
232 qeth_l2_send_delgroupmac(card, mac->mac_addr);
233 }
234 hash_del(&mac->hnode);
235 kfree(mac);
236 }
237 spin_unlock_bh(&card->mclock);
238 }
239
240 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
241 struct sk_buff *skb)
242 {
243 if (card->info.type == QETH_CARD_TYPE_OSN)
244 return RTN_UNSPEC;
245 if (is_broadcast_ether_addr(skb->data))
246 return RTN_BROADCAST;
247 if (is_multicast_ether_addr(skb->data))
248 return RTN_MULTICAST;
249 return RTN_UNSPEC;
250 }
251
252 static inline void qeth_l2_hdr_csum(struct qeth_card *card,
253 struct qeth_hdr *hdr, struct sk_buff *skb)
254 {
255 struct iphdr *iph = ip_hdr(skb);
256
257 /* tcph->check contains already the pseudo hdr checksum
258 * so just set the header flags
259 */
260 if (iph->protocol == IPPROTO_UDP)
261 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
262 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
263 QETH_HDR_EXT_CSUM_HDR_REQ;
264 iph->check = 0;
265 if (card->options.performance_stats)
266 card->perf_stats.tx_csum++;
267 }
268
269 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
270 struct sk_buff *skb, int cast_type)
271 {
272 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
273
274 memset(hdr, 0, sizeof(struct qeth_hdr));
275 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
276
277 /* set byte byte 3 to casting flags */
278 if (cast_type == RTN_MULTICAST)
279 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
280 else if (cast_type == RTN_BROADCAST)
281 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
282 else
283 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
284
285 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
286 /* VSWITCH relies on the VLAN
287 * information to be present in
288 * the QDIO header */
289 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
290 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
291 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
292 }
293 }
294
295 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
296 struct qeth_reply *reply, unsigned long data)
297 {
298 struct qeth_ipa_cmd *cmd;
299
300 QETH_CARD_TEXT(card, 2, "L2sdvcb");
301 cmd = (struct qeth_ipa_cmd *) data;
302 if (cmd->hdr.return_code) {
303 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
304 "Continuing\n", cmd->data.setdelvlan.vlan_id,
305 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
306 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
307 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
308 }
309 return 0;
310 }
311
312 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
313 enum qeth_ipa_cmds ipacmd)
314 {
315 struct qeth_ipa_cmd *cmd;
316 struct qeth_cmd_buffer *iob;
317
318 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
319 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
320 if (!iob)
321 return -ENOMEM;
322 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
323 cmd->data.setdelvlan.vlan_id = i;
324 return qeth_send_ipa_cmd(card, iob,
325 qeth_l2_send_setdelvlan_cb, NULL);
326 }
327
328 static void qeth_l2_process_vlans(struct qeth_card *card)
329 {
330 struct qeth_vlan_vid *id;
331 QETH_CARD_TEXT(card, 3, "L2prcvln");
332 spin_lock_bh(&card->vlanlock);
333 list_for_each_entry(id, &card->vid_list, list) {
334 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
335 }
336 spin_unlock_bh(&card->vlanlock);
337 }
338
339 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
340 __be16 proto, u16 vid)
341 {
342 struct qeth_card *card = dev->ml_priv;
343 struct qeth_vlan_vid *id;
344 int rc;
345
346 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
347 if (!vid)
348 return 0;
349 if (card->info.type == QETH_CARD_TYPE_OSM) {
350 QETH_CARD_TEXT(card, 3, "aidOSM");
351 return 0;
352 }
353 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
354 QETH_CARD_TEXT(card, 3, "aidREC");
355 return 0;
356 }
357 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
358 if (id) {
359 id->vid = vid;
360 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
361 if (rc) {
362 kfree(id);
363 return rc;
364 }
365 spin_lock_bh(&card->vlanlock);
366 list_add_tail(&id->list, &card->vid_list);
367 spin_unlock_bh(&card->vlanlock);
368 } else {
369 return -ENOMEM;
370 }
371 return 0;
372 }
373
374 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
375 __be16 proto, u16 vid)
376 {
377 struct qeth_vlan_vid *id, *tmpid = NULL;
378 struct qeth_card *card = dev->ml_priv;
379 int rc = 0;
380
381 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
382 if (card->info.type == QETH_CARD_TYPE_OSM) {
383 QETH_CARD_TEXT(card, 3, "kidOSM");
384 return 0;
385 }
386 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
387 QETH_CARD_TEXT(card, 3, "kidREC");
388 return 0;
389 }
390 spin_lock_bh(&card->vlanlock);
391 list_for_each_entry(id, &card->vid_list, list) {
392 if (id->vid == vid) {
393 list_del(&id->list);
394 tmpid = id;
395 break;
396 }
397 }
398 spin_unlock_bh(&card->vlanlock);
399 if (tmpid) {
400 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
401 kfree(tmpid);
402 }
403 qeth_l2_set_rx_mode(card->dev);
404 return rc;
405 }
406
407 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
408 {
409 QETH_DBF_TEXT(SETUP , 2, "stopcard");
410 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
411
412 qeth_set_allowed_threads(card, 0, 1);
413 if (card->read.state == CH_STATE_UP &&
414 card->write.state == CH_STATE_UP &&
415 (card->state == CARD_STATE_UP)) {
416 if (recovery_mode &&
417 card->info.type != QETH_CARD_TYPE_OSN) {
418 qeth_l2_stop(card->dev);
419 } else {
420 rtnl_lock();
421 dev_close(card->dev);
422 rtnl_unlock();
423 }
424 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
425 card->state = CARD_STATE_SOFTSETUP;
426 }
427 if (card->state == CARD_STATE_SOFTSETUP) {
428 qeth_l2_del_all_macs(card, 0);
429 qeth_clear_ipacmd_list(card);
430 card->state = CARD_STATE_HARDSETUP;
431 }
432 if (card->state == CARD_STATE_HARDSETUP) {
433 qeth_qdio_clear_card(card, 0);
434 qeth_clear_qdio_buffers(card);
435 qeth_clear_working_pool_list(card);
436 card->state = CARD_STATE_DOWN;
437 }
438 if (card->state == CARD_STATE_DOWN) {
439 qeth_clear_cmd_buffers(&card->read);
440 qeth_clear_cmd_buffers(&card->write);
441 }
442 }
443
444 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
445 int budget, int *done)
446 {
447 int work_done = 0;
448 struct sk_buff *skb;
449 struct qeth_hdr *hdr;
450 unsigned int len;
451
452 *done = 0;
453 WARN_ON_ONCE(!budget);
454 while (budget) {
455 skb = qeth_core_get_next_skb(card,
456 &card->qdio.in_q->bufs[card->rx.b_index],
457 &card->rx.b_element, &card->rx.e_offset, &hdr);
458 if (!skb) {
459 *done = 1;
460 break;
461 }
462 skb->dev = card->dev;
463 switch (hdr->hdr.l2.id) {
464 case QETH_HEADER_TYPE_LAYER2:
465 skb->pkt_type = PACKET_HOST;
466 skb->protocol = eth_type_trans(skb, skb->dev);
467 if ((card->dev->features & NETIF_F_RXCSUM)
468 && ((hdr->hdr.l2.flags[1] &
469 (QETH_HDR_EXT_CSUM_HDR_REQ |
470 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
471 (QETH_HDR_EXT_CSUM_HDR_REQ |
472 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
473 skb->ip_summed = CHECKSUM_UNNECESSARY;
474 else
475 skb->ip_summed = CHECKSUM_NONE;
476 if (skb->protocol == htons(ETH_P_802_2))
477 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
478 len = skb->len;
479 napi_gro_receive(&card->napi, skb);
480 break;
481 case QETH_HEADER_TYPE_OSN:
482 if (card->info.type == QETH_CARD_TYPE_OSN) {
483 skb_push(skb, sizeof(struct qeth_hdr));
484 skb_copy_to_linear_data(skb, hdr,
485 sizeof(struct qeth_hdr));
486 len = skb->len;
487 card->osn_info.data_cb(skb);
488 break;
489 }
490 /* else unknown */
491 default:
492 dev_kfree_skb_any(skb);
493 QETH_CARD_TEXT(card, 3, "inbunkno");
494 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
495 continue;
496 }
497 work_done++;
498 budget--;
499 card->stats.rx_packets++;
500 card->stats.rx_bytes += len;
501 }
502 return work_done;
503 }
504
505 static int qeth_l2_poll(struct napi_struct *napi, int budget)
506 {
507 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
508 int work_done = 0;
509 struct qeth_qdio_buffer *buffer;
510 int done;
511 int new_budget = budget;
512
513 if (card->options.performance_stats) {
514 card->perf_stats.inbound_cnt++;
515 card->perf_stats.inbound_start_time = qeth_get_micros();
516 }
517
518 while (1) {
519 if (!card->rx.b_count) {
520 card->rx.qdio_err = 0;
521 card->rx.b_count = qdio_get_next_buffers(
522 card->data.ccwdev, 0, &card->rx.b_index,
523 &card->rx.qdio_err);
524 if (card->rx.b_count <= 0) {
525 card->rx.b_count = 0;
526 break;
527 }
528 card->rx.b_element =
529 &card->qdio.in_q->bufs[card->rx.b_index]
530 .buffer->element[0];
531 card->rx.e_offset = 0;
532 }
533
534 while (card->rx.b_count) {
535 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
536 if (!(card->rx.qdio_err &&
537 qeth_check_qdio_errors(card, buffer->buffer,
538 card->rx.qdio_err, "qinerr")))
539 work_done += qeth_l2_process_inbound_buffer(
540 card, new_budget, &done);
541 else
542 done = 1;
543
544 if (done) {
545 if (card->options.performance_stats)
546 card->perf_stats.bufs_rec++;
547 qeth_put_buffer_pool_entry(card,
548 buffer->pool_entry);
549 qeth_queue_input_buffer(card, card->rx.b_index);
550 card->rx.b_count--;
551 if (card->rx.b_count) {
552 card->rx.b_index =
553 (card->rx.b_index + 1) %
554 QDIO_MAX_BUFFERS_PER_Q;
555 card->rx.b_element =
556 &card->qdio.in_q
557 ->bufs[card->rx.b_index]
558 .buffer->element[0];
559 card->rx.e_offset = 0;
560 }
561 }
562
563 if (work_done >= budget)
564 goto out;
565 else
566 new_budget = budget - work_done;
567 }
568 }
569
570 napi_complete(napi);
571 if (qdio_start_irq(card->data.ccwdev, 0))
572 napi_schedule(&card->napi);
573 out:
574 if (card->options.performance_stats)
575 card->perf_stats.inbound_time += qeth_get_micros() -
576 card->perf_stats.inbound_start_time;
577 return work_done;
578 }
579
580 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
581 enum qeth_ipa_cmds ipacmd)
582 {
583 struct qeth_ipa_cmd *cmd;
584 struct qeth_cmd_buffer *iob;
585
586 QETH_CARD_TEXT(card, 2, "L2sdmac");
587 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
588 if (!iob)
589 return -ENOMEM;
590 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
591 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
592 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
593 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
594 }
595
596 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
597 {
598 int rc;
599
600 QETH_CARD_TEXT(card, 2, "L2Setmac");
601 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
602 IPA_CMD_SETVMAC));
603 if (rc == 0) {
604 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
605 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
606 dev_info(&card->gdev->dev,
607 "MAC address %pM successfully registered on device %s\n",
608 card->dev->dev_addr, card->dev->name);
609 } else {
610 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
611 switch (rc) {
612 case -EEXIST:
613 dev_warn(&card->gdev->dev,
614 "MAC address %pM already exists\n", mac);
615 break;
616 case -EPERM:
617 dev_warn(&card->gdev->dev,
618 "MAC address %pM is not authorized\n", mac);
619 break;
620 }
621 }
622 return rc;
623 }
624
625 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
626 {
627 int rc;
628
629 QETH_CARD_TEXT(card, 2, "L2Delmac");
630 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
631 return 0;
632 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
633 IPA_CMD_DELVMAC));
634 if (rc == 0)
635 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
636 return rc;
637 }
638
639 static int qeth_l2_request_initial_mac(struct qeth_card *card)
640 {
641 int rc = 0;
642 char vendor_pre[] = {0x02, 0x00, 0x00};
643
644 QETH_DBF_TEXT(SETUP, 2, "doL2init");
645 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
646
647 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
648 rc = qeth_query_setadapterparms(card);
649 if (rc) {
650 QETH_DBF_MESSAGE(2, "could not query adapter "
651 "parameters on device %s: x%x\n",
652 CARD_BUS_ID(card), rc);
653 }
654 }
655
656 if (card->info.type == QETH_CARD_TYPE_IQD ||
657 card->info.type == QETH_CARD_TYPE_OSM ||
658 card->info.type == QETH_CARD_TYPE_OSX ||
659 card->info.guestlan) {
660 rc = qeth_setadpparms_change_macaddr(card);
661 if (rc) {
662 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
663 "device %s: x%x\n", CARD_BUS_ID(card), rc);
664 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
665 return rc;
666 }
667 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
668 } else {
669 eth_random_addr(card->dev->dev_addr);
670 memcpy(card->dev->dev_addr, vendor_pre, 3);
671 }
672 return 0;
673 }
674
675 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
676 {
677 struct sockaddr *addr = p;
678 struct qeth_card *card = dev->ml_priv;
679 int rc = 0;
680
681 QETH_CARD_TEXT(card, 3, "setmac");
682
683 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
684 QETH_CARD_TEXT(card, 3, "setmcINV");
685 return -EOPNOTSUPP;
686 }
687
688 if (card->info.type == QETH_CARD_TYPE_OSN ||
689 card->info.type == QETH_CARD_TYPE_OSM ||
690 card->info.type == QETH_CARD_TYPE_OSX) {
691 QETH_CARD_TEXT(card, 3, "setmcTYP");
692 return -EOPNOTSUPP;
693 }
694 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
695 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
696 QETH_CARD_TEXT(card, 3, "setmcREC");
697 return -ERESTARTSYS;
698 }
699 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
700 if (!rc || (rc == -ENOENT))
701 rc = qeth_l2_send_setmac(card, addr->sa_data);
702 return rc ? -EINVAL : 0;
703 }
704
705 static void qeth_promisc_to_bridge(struct qeth_card *card)
706 {
707 struct net_device *dev = card->dev;
708 enum qeth_ipa_promisc_modes promisc_mode;
709 int role;
710 int rc;
711
712 QETH_CARD_TEXT(card, 3, "pmisc2br");
713
714 if (!card->options.sbp.reflect_promisc)
715 return;
716 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
717 : SET_PROMISC_MODE_OFF;
718 if (promisc_mode == card->info.promisc_mode)
719 return;
720
721 if (promisc_mode == SET_PROMISC_MODE_ON) {
722 if (card->options.sbp.reflect_promisc_primary)
723 role = QETH_SBP_ROLE_PRIMARY;
724 else
725 role = QETH_SBP_ROLE_SECONDARY;
726 } else
727 role = QETH_SBP_ROLE_NONE;
728
729 rc = qeth_bridgeport_setrole(card, role);
730 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
731 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
732 if (!rc) {
733 card->options.sbp.role = role;
734 card->info.promisc_mode = promisc_mode;
735 }
736
737 }
738 /* New MAC address is added to the hash table and marked to be written on card
739 * only if there is not in the hash table storage already
740 *
741 */
742 static void
743 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
744 {
745 struct qeth_mac *mac;
746
747 hash_for_each_possible(card->mac_htable, mac, hnode,
748 qeth_l2_mac_hash(ha->addr)) {
749 if (is_uc == mac->is_uc &&
750 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
751 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
752 return;
753 }
754 }
755
756 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
757
758 if (!mac)
759 return;
760
761 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
762 mac->is_uc = is_uc;
763 mac->disp_flag = QETH_DISP_ADDR_ADD;
764
765 hash_add(card->mac_htable, &mac->hnode,
766 qeth_l2_mac_hash(mac->mac_addr));
767
768 }
769
770 static void qeth_l2_set_rx_mode(struct net_device *dev)
771 {
772 struct qeth_card *card = dev->ml_priv;
773 struct netdev_hw_addr *ha;
774 struct qeth_mac *mac;
775 struct hlist_node *tmp;
776 int i;
777 int rc;
778
779 if (card->info.type == QETH_CARD_TYPE_OSN)
780 return;
781
782 QETH_CARD_TEXT(card, 3, "setmulti");
783 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
784 (card->state != CARD_STATE_UP))
785 return;
786
787 spin_lock_bh(&card->mclock);
788
789 netdev_for_each_mc_addr(ha, dev)
790 qeth_l2_add_mac(card, ha, 0);
791
792 netdev_for_each_uc_addr(ha, dev)
793 qeth_l2_add_mac(card, ha, 1);
794
795 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
796 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
797 if (!mac->is_uc)
798 rc = qeth_l2_send_delgroupmac(card,
799 mac->mac_addr);
800 else {
801 rc = qeth_l2_send_setdelmac(card, mac->mac_addr,
802 IPA_CMD_DELVMAC);
803 }
804
805 hash_del(&mac->hnode);
806 kfree(mac);
807
808 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
809 rc = qeth_l2_write_mac(card, mac);
810 if (rc) {
811 hash_del(&mac->hnode);
812 kfree(mac);
813 } else
814 mac->disp_flag = QETH_DISP_ADDR_DELETE;
815 } else
816 mac->disp_flag = QETH_DISP_ADDR_DELETE;
817 }
818
819 spin_unlock_bh(&card->mclock);
820
821 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
822 qeth_setadp_promisc_mode(card);
823 else
824 qeth_promisc_to_bridge(card);
825 }
826
827 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
828 {
829 int rc;
830 struct qeth_hdr *hdr = NULL;
831 int elements = 0;
832 struct qeth_card *card = dev->ml_priv;
833 struct sk_buff *new_skb = skb;
834 int cast_type = qeth_l2_get_cast_type(card, skb);
835 struct qeth_qdio_out_q *queue;
836 int tx_bytes = skb->len;
837 int data_offset = -1;
838 int elements_needed = 0;
839 int hd_len = 0;
840 int nr_frags;
841
842 if (card->qdio.do_prio_queueing || (cast_type &&
843 card->info.is_multicast_different))
844 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
845 qeth_get_ip_version(skb), cast_type)];
846 else
847 queue = card->qdio.out_qs[card->qdio.default_out_queue];
848
849 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
850 card->stats.tx_carrier_errors++;
851 goto tx_drop;
852 }
853
854 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
855 (skb->protocol == htons(ETH_P_IPV6)))
856 goto tx_drop;
857
858 if (card->options.performance_stats) {
859 card->perf_stats.outbound_cnt++;
860 card->perf_stats.outbound_start_time = qeth_get_micros();
861 }
862 netif_stop_queue(dev);
863
864 /* fix hardware limitation: as long as we do not have sbal
865 * chaining we can not send long frag lists
866 */
867 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
868 !qeth_get_elements_no(card, new_skb, 0)) {
869 int lin_rc = skb_linearize(new_skb);
870
871 if (card->options.performance_stats) {
872 if (lin_rc)
873 card->perf_stats.tx_linfail++;
874 else
875 card->perf_stats.tx_lin++;
876 }
877 if (lin_rc)
878 goto tx_drop;
879 }
880
881 if (card->info.type == QETH_CARD_TYPE_OSN)
882 hdr = (struct qeth_hdr *)skb->data;
883 else {
884 if (card->info.type == QETH_CARD_TYPE_IQD) {
885 new_skb = skb;
886 data_offset = ETH_HLEN;
887 hd_len = ETH_HLEN;
888 hdr = kmem_cache_alloc(qeth_core_header_cache,
889 GFP_ATOMIC);
890 if (!hdr)
891 goto tx_drop;
892 elements_needed++;
893 skb_reset_mac_header(new_skb);
894 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
895 hdr->hdr.l2.pkt_length = new_skb->len;
896 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
897 skb_mac_header(new_skb), ETH_HLEN);
898 } else {
899 /* create a clone with writeable headroom */
900 new_skb = skb_realloc_headroom(skb,
901 sizeof(struct qeth_hdr));
902 if (!new_skb)
903 goto tx_drop;
904 hdr = (struct qeth_hdr *)skb_push(new_skb,
905 sizeof(struct qeth_hdr));
906 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
907 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
908 if (new_skb->ip_summed == CHECKSUM_PARTIAL)
909 qeth_l2_hdr_csum(card, hdr, new_skb);
910 }
911 }
912
913 elements = qeth_get_elements_no(card, new_skb, elements_needed);
914 if (!elements) {
915 if (data_offset >= 0)
916 kmem_cache_free(qeth_core_header_cache, hdr);
917 goto tx_drop;
918 }
919
920 if (card->info.type != QETH_CARD_TYPE_IQD) {
921 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
922 sizeof(struct qeth_hdr_layer2)))
923 goto tx_drop;
924 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
925 elements);
926 } else
927 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
928 elements, data_offset, hd_len);
929 if (!rc) {
930 card->stats.tx_packets++;
931 card->stats.tx_bytes += tx_bytes;
932 if (card->options.performance_stats) {
933 nr_frags = skb_shinfo(new_skb)->nr_frags;
934 if (nr_frags) {
935 card->perf_stats.sg_skbs_sent++;
936 /* nr_frags + skb->data */
937 card->perf_stats.sg_frags_sent += nr_frags + 1;
938 }
939 }
940 if (new_skb != skb)
941 dev_kfree_skb_any(skb);
942 rc = NETDEV_TX_OK;
943 } else {
944 if (data_offset >= 0)
945 kmem_cache_free(qeth_core_header_cache, hdr);
946
947 if (rc == -EBUSY) {
948 if (new_skb != skb)
949 dev_kfree_skb_any(new_skb);
950 return NETDEV_TX_BUSY;
951 } else
952 goto tx_drop;
953 }
954
955 netif_wake_queue(dev);
956 if (card->options.performance_stats)
957 card->perf_stats.outbound_time += qeth_get_micros() -
958 card->perf_stats.outbound_start_time;
959 return rc;
960
961 tx_drop:
962 card->stats.tx_dropped++;
963 card->stats.tx_errors++;
964 if ((new_skb != skb) && new_skb)
965 dev_kfree_skb_any(new_skb);
966 dev_kfree_skb_any(skb);
967 netif_wake_queue(dev);
968 return NETDEV_TX_OK;
969 }
970
971 static int __qeth_l2_open(struct net_device *dev)
972 {
973 struct qeth_card *card = dev->ml_priv;
974 int rc = 0;
975
976 QETH_CARD_TEXT(card, 4, "qethopen");
977 if (card->state == CARD_STATE_UP)
978 return rc;
979 if (card->state != CARD_STATE_SOFTSETUP)
980 return -ENODEV;
981
982 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
983 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
984 QETH_CARD_TEXT(card, 4, "nomacadr");
985 return -EPERM;
986 }
987 card->data.state = CH_STATE_UP;
988 card->state = CARD_STATE_UP;
989 netif_start_queue(dev);
990
991 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
992 napi_enable(&card->napi);
993 napi_schedule(&card->napi);
994 } else
995 rc = -EIO;
996 return rc;
997 }
998
999 static int qeth_l2_open(struct net_device *dev)
1000 {
1001 struct qeth_card *card = dev->ml_priv;
1002
1003 QETH_CARD_TEXT(card, 5, "qethope_");
1004 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1005 QETH_CARD_TEXT(card, 3, "openREC");
1006 return -ERESTARTSYS;
1007 }
1008 return __qeth_l2_open(dev);
1009 }
1010
1011 static int qeth_l2_stop(struct net_device *dev)
1012 {
1013 struct qeth_card *card = dev->ml_priv;
1014
1015 QETH_CARD_TEXT(card, 4, "qethstop");
1016 netif_tx_disable(dev);
1017 if (card->state == CARD_STATE_UP) {
1018 card->state = CARD_STATE_SOFTSETUP;
1019 napi_disable(&card->napi);
1020 }
1021 return 0;
1022 }
1023
1024 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
1025 {
1026 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1027
1028 qeth_l2_create_device_attributes(&gdev->dev);
1029 INIT_LIST_HEAD(&card->vid_list);
1030 hash_init(card->mac_htable);
1031 card->options.layer2 = 1;
1032 card->info.hwtrap = 0;
1033 return 0;
1034 }
1035
1036 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
1037 {
1038 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1039
1040 qeth_l2_remove_device_attributes(&cgdev->dev);
1041 qeth_set_allowed_threads(card, 0, 1);
1042 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1043
1044 if (cgdev->state == CCWGROUP_ONLINE)
1045 qeth_l2_set_offline(cgdev);
1046
1047 if (card->dev) {
1048 netif_napi_del(&card->napi);
1049 unregister_netdev(card->dev);
1050 card->dev = NULL;
1051 }
1052 return;
1053 }
1054
1055 static const struct ethtool_ops qeth_l2_ethtool_ops = {
1056 .get_link = ethtool_op_get_link,
1057 .get_strings = qeth_core_get_strings,
1058 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1059 .get_sset_count = qeth_core_get_sset_count,
1060 .get_drvinfo = qeth_core_get_drvinfo,
1061 .get_settings = qeth_core_ethtool_get_settings,
1062 };
1063
1064 static const struct ethtool_ops qeth_l2_osn_ops = {
1065 .get_strings = qeth_core_get_strings,
1066 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1067 .get_sset_count = qeth_core_get_sset_count,
1068 .get_drvinfo = qeth_core_get_drvinfo,
1069 };
1070
1071 static const struct net_device_ops qeth_l2_netdev_ops = {
1072 .ndo_open = qeth_l2_open,
1073 .ndo_stop = qeth_l2_stop,
1074 .ndo_get_stats = qeth_get_stats,
1075 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1076 .ndo_validate_addr = eth_validate_addr,
1077 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1078 .ndo_do_ioctl = qeth_l2_do_ioctl,
1079 .ndo_set_mac_address = qeth_l2_set_mac_address,
1080 .ndo_change_mtu = qeth_change_mtu,
1081 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1082 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1083 .ndo_tx_timeout = qeth_tx_timeout,
1084 .ndo_fix_features = qeth_fix_features,
1085 .ndo_set_features = qeth_set_features
1086 };
1087
1088 static int qeth_l2_setup_netdev(struct qeth_card *card)
1089 {
1090 switch (card->info.type) {
1091 case QETH_CARD_TYPE_IQD:
1092 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1093 ether_setup);
1094 break;
1095 case QETH_CARD_TYPE_OSN:
1096 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1097 ether_setup);
1098 card->dev->flags |= IFF_NOARP;
1099 break;
1100 default:
1101 card->dev = alloc_etherdev(0);
1102 }
1103
1104 if (!card->dev)
1105 return -ENODEV;
1106
1107 card->dev->ml_priv = card;
1108 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
1109 card->dev->mtu = card->info.initial_mtu;
1110 card->dev->netdev_ops = &qeth_l2_netdev_ops;
1111 card->dev->ethtool_ops =
1112 (card->info.type != QETH_CARD_TYPE_OSN) ?
1113 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
1114 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1115 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1116 card->dev->hw_features = NETIF_F_SG;
1117 card->dev->vlan_features = NETIF_F_SG;
1118 /* OSA 3S and earlier has no RX/TX support */
1119 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1120 card->dev->hw_features |= NETIF_F_IP_CSUM;
1121 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1122 }
1123 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1124 card->dev->hw_features |= NETIF_F_RXCSUM;
1125 card->dev->vlan_features |= NETIF_F_RXCSUM;
1126 }
1127 /* Turn on SG per default */
1128 card->dev->features |= NETIF_F_SG;
1129 }
1130 card->info.broadcast_capable = 1;
1131 qeth_l2_request_initial_mac(card);
1132 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
1133 PAGE_SIZE;
1134 card->dev->gso_max_segs = (QETH_MAX_BUFFER_ELEMENTS(card) - 1);
1135 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1136 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1137 netif_carrier_off(card->dev);
1138 return register_netdev(card->dev);
1139 }
1140
1141 static int qeth_l2_start_ipassists(struct qeth_card *card)
1142 {
1143 /* configure isolation level */
1144 if (qeth_set_access_ctrl_online(card, 0))
1145 return -ENODEV;
1146 return 0;
1147 }
1148
1149 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1150 {
1151 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1152 int rc = 0;
1153 enum qeth_card_states recover_flag;
1154
1155 mutex_lock(&card->discipline_mutex);
1156 mutex_lock(&card->conf_mutex);
1157 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1158 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1159
1160 recover_flag = card->state;
1161 rc = qeth_core_hardsetup_card(card);
1162 if (rc) {
1163 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1164 rc = -ENODEV;
1165 goto out_remove;
1166 }
1167 qeth_bridgeport_query_support(card);
1168 if (card->options.sbp.supported_funcs)
1169 dev_info(&card->gdev->dev,
1170 "The device represents a Bridge Capable Port\n");
1171 qeth_trace_features(card);
1172
1173 if (!card->dev && qeth_l2_setup_netdev(card)) {
1174 rc = -ENODEV;
1175 goto out_remove;
1176 }
1177
1178 if (card->info.type != QETH_CARD_TYPE_OSN)
1179 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1180
1181 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1182 if (card->info.hwtrap &&
1183 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1184 card->info.hwtrap = 0;
1185 } else
1186 card->info.hwtrap = 0;
1187
1188 qeth_l2_setup_bridgeport_attrs(card);
1189
1190 card->state = CARD_STATE_HARDSETUP;
1191 memset(&card->rx, 0, sizeof(struct qeth_rx));
1192 qeth_print_status_message(card);
1193
1194 /* softsetup */
1195 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1196
1197 rc = qeth_send_startlan(card);
1198 if (rc) {
1199 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1200 if (rc == 0xe080) {
1201 dev_warn(&card->gdev->dev,
1202 "The LAN is offline\n");
1203 card->lan_online = 0;
1204 goto contin;
1205 }
1206 rc = -ENODEV;
1207 goto out_remove;
1208 } else
1209 card->lan_online = 1;
1210
1211 contin:
1212 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1213 (card->info.type == QETH_CARD_TYPE_OSX)) {
1214 rc = qeth_l2_start_ipassists(card);
1215 if (rc)
1216 goto out_remove;
1217 }
1218
1219 if (card->info.type != QETH_CARD_TYPE_OSN &&
1220 card->info.type != QETH_CARD_TYPE_OSM)
1221 qeth_l2_process_vlans(card);
1222
1223 netif_tx_disable(card->dev);
1224
1225 rc = qeth_init_qdio_queues(card);
1226 if (rc) {
1227 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1228 rc = -ENODEV;
1229 goto out_remove;
1230 }
1231 card->state = CARD_STATE_SOFTSETUP;
1232 if (card->lan_online)
1233 netif_carrier_on(card->dev);
1234 else
1235 netif_carrier_off(card->dev);
1236
1237 qeth_set_allowed_threads(card, 0xffffffff, 0);
1238 if (recover_flag == CARD_STATE_RECOVER) {
1239 if (recovery_mode &&
1240 card->info.type != QETH_CARD_TYPE_OSN) {
1241 __qeth_l2_open(card->dev);
1242 } else {
1243 rtnl_lock();
1244 dev_open(card->dev);
1245 rtnl_unlock();
1246 }
1247 /* this also sets saved unicast addresses */
1248 qeth_l2_set_rx_mode(card->dev);
1249 }
1250 /* let user_space know that device is online */
1251 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1252 mutex_unlock(&card->conf_mutex);
1253 mutex_unlock(&card->discipline_mutex);
1254 return 0;
1255
1256 out_remove:
1257 qeth_l2_stop_card(card, 0);
1258 ccw_device_set_offline(CARD_DDEV(card));
1259 ccw_device_set_offline(CARD_WDEV(card));
1260 ccw_device_set_offline(CARD_RDEV(card));
1261 qdio_free(CARD_DDEV(card));
1262 if (recover_flag == CARD_STATE_RECOVER)
1263 card->state = CARD_STATE_RECOVER;
1264 else
1265 card->state = CARD_STATE_DOWN;
1266 mutex_unlock(&card->conf_mutex);
1267 mutex_unlock(&card->discipline_mutex);
1268 return rc;
1269 }
1270
1271 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1272 {
1273 return __qeth_l2_set_online(gdev, 0);
1274 }
1275
1276 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1277 int recovery_mode)
1278 {
1279 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1280 int rc = 0, rc2 = 0, rc3 = 0;
1281 enum qeth_card_states recover_flag;
1282
1283 mutex_lock(&card->discipline_mutex);
1284 mutex_lock(&card->conf_mutex);
1285 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1286 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1287
1288 if (card->dev && netif_carrier_ok(card->dev))
1289 netif_carrier_off(card->dev);
1290 recover_flag = card->state;
1291 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1292 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1293 card->info.hwtrap = 1;
1294 }
1295 qeth_l2_stop_card(card, recovery_mode);
1296 rc = ccw_device_set_offline(CARD_DDEV(card));
1297 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1298 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1299 if (!rc)
1300 rc = (rc2) ? rc2 : rc3;
1301 if (rc)
1302 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1303 qdio_free(CARD_DDEV(card));
1304 if (recover_flag == CARD_STATE_UP)
1305 card->state = CARD_STATE_RECOVER;
1306 /* let user_space know that device is offline */
1307 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1308 mutex_unlock(&card->conf_mutex);
1309 mutex_unlock(&card->discipline_mutex);
1310 return 0;
1311 }
1312
1313 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1314 {
1315 return __qeth_l2_set_offline(cgdev, 0);
1316 }
1317
1318 static int qeth_l2_recover(void *ptr)
1319 {
1320 struct qeth_card *card;
1321 int rc = 0;
1322
1323 card = (struct qeth_card *) ptr;
1324 QETH_CARD_TEXT(card, 2, "recover1");
1325 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1326 return 0;
1327 QETH_CARD_TEXT(card, 2, "recover2");
1328 dev_warn(&card->gdev->dev,
1329 "A recovery process has been started for the device\n");
1330 qeth_set_recovery_task(card);
1331 __qeth_l2_set_offline(card->gdev, 1);
1332 rc = __qeth_l2_set_online(card->gdev, 1);
1333 if (!rc)
1334 dev_info(&card->gdev->dev,
1335 "Device successfully recovered!\n");
1336 else {
1337 qeth_close_dev(card);
1338 dev_warn(&card->gdev->dev, "The qeth device driver "
1339 "failed to recover an error on the device\n");
1340 }
1341 qeth_clear_recovery_task(card);
1342 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1343 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1344 return 0;
1345 }
1346
1347 static int __init qeth_l2_init(void)
1348 {
1349 pr_info("register layer 2 discipline\n");
1350 return 0;
1351 }
1352
1353 static void __exit qeth_l2_exit(void)
1354 {
1355 pr_info("unregister layer 2 discipline\n");
1356 }
1357
1358 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1359 {
1360 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1361 qeth_set_allowed_threads(card, 0, 1);
1362 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1363 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1364 qeth_qdio_clear_card(card, 0);
1365 qeth_clear_qdio_buffers(card);
1366 qdio_free(CARD_DDEV(card));
1367 }
1368
1369 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1370 {
1371 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1372
1373 if (card->dev)
1374 netif_device_detach(card->dev);
1375 qeth_set_allowed_threads(card, 0, 1);
1376 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1377 if (gdev->state == CCWGROUP_OFFLINE)
1378 return 0;
1379 if (card->state == CARD_STATE_UP) {
1380 if (card->info.hwtrap)
1381 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1382 __qeth_l2_set_offline(card->gdev, 1);
1383 } else
1384 __qeth_l2_set_offline(card->gdev, 0);
1385 return 0;
1386 }
1387
1388 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1389 {
1390 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1391 int rc = 0;
1392
1393 if (gdev->state == CCWGROUP_OFFLINE)
1394 goto out;
1395
1396 if (card->state == CARD_STATE_RECOVER) {
1397 rc = __qeth_l2_set_online(card->gdev, 1);
1398 if (rc) {
1399 rtnl_lock();
1400 dev_close(card->dev);
1401 rtnl_unlock();
1402 }
1403 } else
1404 rc = __qeth_l2_set_online(card->gdev, 0);
1405 out:
1406 qeth_set_allowed_threads(card, 0xffffffff, 0);
1407 if (card->dev)
1408 netif_device_attach(card->dev);
1409 if (rc)
1410 dev_warn(&card->gdev->dev, "The qeth device driver "
1411 "failed to recover an error on the device\n");
1412 return rc;
1413 }
1414
1415 /* Returns zero if the command is successfully "consumed" */
1416 static int qeth_l2_control_event(struct qeth_card *card,
1417 struct qeth_ipa_cmd *cmd)
1418 {
1419 switch (cmd->hdr.command) {
1420 case IPA_CMD_SETBRIDGEPORT_OSA:
1421 case IPA_CMD_SETBRIDGEPORT_IQD:
1422 if (cmd->data.sbp.hdr.command_code ==
1423 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1424 qeth_bridge_state_change(card, cmd);
1425 return 0;
1426 } else
1427 return 1;
1428 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1429 qeth_bridge_host_event(card, cmd);
1430 return 0;
1431 default:
1432 return 1;
1433 }
1434 }
1435
1436 struct qeth_discipline qeth_l2_discipline = {
1437 .start_poll = qeth_qdio_start_poll,
1438 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1439 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1440 .recover = qeth_l2_recover,
1441 .setup = qeth_l2_probe_device,
1442 .remove = qeth_l2_remove_device,
1443 .set_online = qeth_l2_set_online,
1444 .set_offline = qeth_l2_set_offline,
1445 .shutdown = qeth_l2_shutdown,
1446 .freeze = qeth_l2_pm_suspend,
1447 .thaw = qeth_l2_pm_resume,
1448 .restore = qeth_l2_pm_resume,
1449 .control_event_handler = qeth_l2_control_event,
1450 };
1451 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1452
1453 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1454 struct qeth_cmd_buffer *iob)
1455 {
1456 unsigned long flags;
1457 int rc = 0;
1458
1459 QETH_CARD_TEXT(card, 5, "osndctrd");
1460
1461 wait_event(card->wait_q,
1462 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1463 qeth_prepare_control_data(card, len, iob);
1464 QETH_CARD_TEXT(card, 6, "osnoirqp");
1465 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1466 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1467 (addr_t) iob, 0, 0);
1468 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1469 if (rc) {
1470 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1471 "ccw_device_start rc = %i\n", rc);
1472 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1473 qeth_release_buffer(iob->channel, iob);
1474 atomic_set(&card->write.irq_pending, 0);
1475 wake_up(&card->wait_q);
1476 }
1477 return rc;
1478 }
1479
1480 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1481 struct qeth_cmd_buffer *iob, int data_len)
1482 {
1483 u16 s1, s2;
1484
1485 QETH_CARD_TEXT(card, 4, "osndipa");
1486
1487 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1488 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1489 s2 = (u16)data_len;
1490 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1491 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1492 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1493 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1494 return qeth_osn_send_control_data(card, s1, iob);
1495 }
1496
1497 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1498 {
1499 struct qeth_cmd_buffer *iob;
1500 struct qeth_card *card;
1501 int rc;
1502
1503 if (!dev)
1504 return -ENODEV;
1505 card = dev->ml_priv;
1506 if (!card)
1507 return -ENODEV;
1508 QETH_CARD_TEXT(card, 2, "osnsdmc");
1509 if (!qeth_card_hw_is_reachable(card))
1510 return -ENODEV;
1511 iob = qeth_wait_for_buffer(&card->write);
1512 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1513 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1514 return rc;
1515 }
1516 EXPORT_SYMBOL(qeth_osn_assist);
1517
1518 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1519 int (*assist_cb)(struct net_device *, void *),
1520 int (*data_cb)(struct sk_buff *))
1521 {
1522 struct qeth_card *card;
1523
1524 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1525 if (*dev == NULL)
1526 return -ENODEV;
1527 card = (*dev)->ml_priv;
1528 if (!card)
1529 return -ENODEV;
1530 QETH_CARD_TEXT(card, 2, "osnreg");
1531 if ((assist_cb == NULL) || (data_cb == NULL))
1532 return -EINVAL;
1533 card->osn_info.assist_cb = assist_cb;
1534 card->osn_info.data_cb = data_cb;
1535 return 0;
1536 }
1537 EXPORT_SYMBOL(qeth_osn_register);
1538
1539 void qeth_osn_deregister(struct net_device *dev)
1540 {
1541 struct qeth_card *card;
1542
1543 if (!dev)
1544 return;
1545 card = dev->ml_priv;
1546 if (!card)
1547 return;
1548 QETH_CARD_TEXT(card, 2, "osndereg");
1549 card->osn_info.assist_cb = NULL;
1550 card->osn_info.data_cb = NULL;
1551 return;
1552 }
1553 EXPORT_SYMBOL(qeth_osn_deregister);
1554
1555 /* SETBRIDGEPORT support, async notifications */
1556
1557 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1558
1559 /**
1560 * qeth_bridge_emit_host_event() - bridgeport address change notification
1561 * @card: qeth_card structure pointer, for udev events.
1562 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1563 * and reset token and addr_lnid are unused and may be NULL.
1564 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1565 * object, 0 - addition of an object.
1566 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1567 * @token: "network token" structure identifying physical address of the port.
1568 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1569 *
1570 * This function is called when registrations and deregistrations are
1571 * reported by the hardware, and also when notifications are enabled -
1572 * for all currently registered addresses.
1573 */
1574 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1575 enum qeth_an_event_type evtype,
1576 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1577 {
1578 char str[7][32];
1579 char *env[8];
1580 int i = 0;
1581
1582 switch (evtype) {
1583 case anev_reg_unreg:
1584 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1585 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1586 ? "deregister" : "register");
1587 env[i] = str[i]; i++;
1588 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1589 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1590 addr_lnid->lnid);
1591 env[i] = str[i]; i++;
1592 }
1593 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1594 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1595 addr_lnid->mac);
1596 env[i] = str[i]; i++;
1597 }
1598 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1599 token->cssid, token->ssid, token->devnum);
1600 env[i] = str[i]; i++;
1601 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1602 env[i] = str[i]; i++;
1603 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1604 token->chpid);
1605 env[i] = str[i]; i++;
1606 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1607 env[i] = str[i]; i++;
1608 break;
1609 case anev_abort:
1610 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1611 env[i] = str[i]; i++;
1612 break;
1613 case anev_reset:
1614 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1615 env[i] = str[i]; i++;
1616 break;
1617 }
1618 env[i] = NULL;
1619 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1620 }
1621
1622 struct qeth_bridge_state_data {
1623 struct work_struct worker;
1624 struct qeth_card *card;
1625 struct qeth_sbp_state_change qports;
1626 };
1627
1628 static void qeth_bridge_state_change_worker(struct work_struct *work)
1629 {
1630 struct qeth_bridge_state_data *data =
1631 container_of(work, struct qeth_bridge_state_data, worker);
1632 /* We are only interested in the first entry - local port */
1633 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1634 char env_locrem[32];
1635 char env_role[32];
1636 char env_state[32];
1637 char *env[] = {
1638 env_locrem,
1639 env_role,
1640 env_state,
1641 NULL
1642 };
1643
1644 /* Role should not change by itself, but if it did, */
1645 /* information from the hardware is authoritative. */
1646 mutex_lock(&data->card->conf_mutex);
1647 data->card->options.sbp.role = entry->role;
1648 mutex_unlock(&data->card->conf_mutex);
1649
1650 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1651 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1652 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1653 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1654 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1655 "<INVALID>");
1656 snprintf(env_state, sizeof(env_state), "STATE=%s",
1657 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1658 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1659 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1660 "<INVALID>");
1661 kobject_uevent_env(&data->card->gdev->dev.kobj,
1662 KOBJ_CHANGE, env);
1663 kfree(data);
1664 }
1665
1666 static void qeth_bridge_state_change(struct qeth_card *card,
1667 struct qeth_ipa_cmd *cmd)
1668 {
1669 struct qeth_sbp_state_change *qports =
1670 &cmd->data.sbp.data.state_change;
1671 struct qeth_bridge_state_data *data;
1672 int extrasize;
1673
1674 QETH_CARD_TEXT(card, 2, "brstchng");
1675 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1676 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1677 return;
1678 }
1679 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1680 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1681 GFP_ATOMIC);
1682 if (!data) {
1683 QETH_CARD_TEXT(card, 2, "BPSalloc");
1684 return;
1685 }
1686 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1687 data->card = card;
1688 memcpy(&data->qports, qports,
1689 sizeof(struct qeth_sbp_state_change) + extrasize);
1690 queue_work(qeth_wq, &data->worker);
1691 }
1692
1693 struct qeth_bridge_host_data {
1694 struct work_struct worker;
1695 struct qeth_card *card;
1696 struct qeth_ipacmd_addr_change hostevs;
1697 };
1698
1699 static void qeth_bridge_host_event_worker(struct work_struct *work)
1700 {
1701 struct qeth_bridge_host_data *data =
1702 container_of(work, struct qeth_bridge_host_data, worker);
1703 int i;
1704
1705 if (data->hostevs.lost_event_mask) {
1706 dev_info(&data->card->gdev->dev,
1707 "Address notification from the Bridge Port stopped %s (%s)\n",
1708 data->card->dev->name,
1709 (data->hostevs.lost_event_mask == 0x01)
1710 ? "Overflow"
1711 : (data->hostevs.lost_event_mask == 0x02)
1712 ? "Bridge port state change"
1713 : "Unknown reason");
1714 mutex_lock(&data->card->conf_mutex);
1715 data->card->options.sbp.hostnotification = 0;
1716 mutex_unlock(&data->card->conf_mutex);
1717 qeth_bridge_emit_host_event(data->card, anev_abort,
1718 0, NULL, NULL);
1719 } else
1720 for (i = 0; i < data->hostevs.num_entries; i++) {
1721 struct qeth_ipacmd_addr_change_entry *entry =
1722 &data->hostevs.entry[i];
1723 qeth_bridge_emit_host_event(data->card,
1724 anev_reg_unreg,
1725 entry->change_code,
1726 &entry->token, &entry->addr_lnid);
1727 }
1728 kfree(data);
1729 }
1730
1731 static void qeth_bridge_host_event(struct qeth_card *card,
1732 struct qeth_ipa_cmd *cmd)
1733 {
1734 struct qeth_ipacmd_addr_change *hostevs =
1735 &cmd->data.addrchange;
1736 struct qeth_bridge_host_data *data;
1737 int extrasize;
1738
1739 QETH_CARD_TEXT(card, 2, "brhostev");
1740 if (cmd->hdr.return_code != 0x0000) {
1741 if (cmd->hdr.return_code == 0x0010) {
1742 if (hostevs->lost_event_mask == 0x00)
1743 hostevs->lost_event_mask = 0xff;
1744 } else {
1745 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1746 cmd->hdr.return_code);
1747 return;
1748 }
1749 }
1750 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1751 hostevs->num_entries;
1752 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1753 GFP_ATOMIC);
1754 if (!data) {
1755 QETH_CARD_TEXT(card, 2, "BPHalloc");
1756 return;
1757 }
1758 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1759 data->card = card;
1760 memcpy(&data->hostevs, hostevs,
1761 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1762 queue_work(qeth_wq, &data->worker);
1763 }
1764
1765 /* SETBRIDGEPORT support; sending commands */
1766
1767 struct _qeth_sbp_cbctl {
1768 u16 ipa_rc;
1769 u16 cmd_rc;
1770 union {
1771 u32 supported;
1772 struct {
1773 enum qeth_sbp_roles *role;
1774 enum qeth_sbp_states *state;
1775 } qports;
1776 } data;
1777 };
1778
1779 /**
1780 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1781 * @card: qeth_card structure pointer, for debug messages.
1782 * @cbctl: state structure with hardware return codes.
1783 * @setcmd: IPA command code
1784 *
1785 * Returns negative errno-compatible error indication or 0 on success.
1786 */
1787 static int qeth_bridgeport_makerc(struct qeth_card *card,
1788 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1789 {
1790 int rc;
1791 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1792
1793 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1794 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1795 switch (cbctl->cmd_rc) {
1796 case 0x0000:
1797 rc = 0;
1798 break;
1799 case 0x2B04:
1800 case 0x0004:
1801 rc = -EOPNOTSUPP;
1802 break;
1803 case 0x2B0C:
1804 case 0x000C: /* Not configured as bridge Port */
1805 rc = -ENODEV; /* maybe not the best code here? */
1806 dev_err(&card->gdev->dev,
1807 "The device is not configured as a Bridge Port\n");
1808 break;
1809 case 0x2B10:
1810 case 0x0010: /* OS mismatch */
1811 rc = -EPERM;
1812 dev_err(&card->gdev->dev,
1813 "A Bridge Port is already configured by a different operating system\n");
1814 break;
1815 case 0x2B14:
1816 case 0x0014: /* Another device is Primary */
1817 switch (setcmd) {
1818 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1819 rc = -EEXIST;
1820 dev_err(&card->gdev->dev,
1821 "The LAN already has a primary Bridge Port\n");
1822 break;
1823 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1824 rc = -EBUSY;
1825 dev_err(&card->gdev->dev,
1826 "The device is already a primary Bridge Port\n");
1827 break;
1828 default:
1829 rc = -EIO;
1830 }
1831 break;
1832 case 0x2B18:
1833 case 0x0018: /* This device is currently Secondary */
1834 rc = -EBUSY;
1835 dev_err(&card->gdev->dev,
1836 "The device is already a secondary Bridge Port\n");
1837 break;
1838 case 0x2B1C:
1839 case 0x001C: /* Limit for Secondary devices reached */
1840 rc = -EEXIST;
1841 dev_err(&card->gdev->dev,
1842 "The LAN cannot have more secondary Bridge Ports\n");
1843 break;
1844 case 0x2B24:
1845 case 0x0024: /* This device is currently Primary */
1846 rc = -EBUSY;
1847 dev_err(&card->gdev->dev,
1848 "The device is already a primary Bridge Port\n");
1849 break;
1850 case 0x2B20:
1851 case 0x0020: /* Not authorized by zManager */
1852 rc = -EACCES;
1853 dev_err(&card->gdev->dev,
1854 "The device is not authorized to be a Bridge Port\n");
1855 break;
1856 default:
1857 rc = -EIO;
1858 }
1859 else
1860 switch (cbctl->ipa_rc) {
1861 case IPA_RC_NOTSUPP:
1862 rc = -EOPNOTSUPP;
1863 break;
1864 case IPA_RC_UNSUPPORTED_COMMAND:
1865 rc = -EOPNOTSUPP;
1866 break;
1867 default:
1868 rc = -EIO;
1869 }
1870
1871 if (rc) {
1872 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1873 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1874 }
1875 return rc;
1876 }
1877
1878 static inline int ipa_cmd_sbp(struct qeth_card *card)
1879 {
1880 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1881 IPA_CMD_SETBRIDGEPORT_IQD :
1882 IPA_CMD_SETBRIDGEPORT_OSA;
1883 }
1884
1885 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1886 struct qeth_reply *reply, unsigned long data)
1887 {
1888 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1889 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1890 QETH_CARD_TEXT(card, 2, "brqsupcb");
1891 cbctl->ipa_rc = cmd->hdr.return_code;
1892 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1893 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1894 cbctl->data.supported =
1895 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1896 } else {
1897 cbctl->data.supported = 0;
1898 }
1899 return 0;
1900 }
1901
1902 /**
1903 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1904 * @card: qeth_card structure pointer.
1905 *
1906 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1907 * strucutre: card->options.sbp.supported_funcs.
1908 */
1909 static void qeth_bridgeport_query_support(struct qeth_card *card)
1910 {
1911 struct qeth_cmd_buffer *iob;
1912 struct qeth_ipa_cmd *cmd;
1913 struct _qeth_sbp_cbctl cbctl;
1914
1915 QETH_CARD_TEXT(card, 2, "brqsuppo");
1916 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1917 if (!iob)
1918 return;
1919 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1920 cmd->data.sbp.hdr.cmdlength =
1921 sizeof(struct qeth_ipacmd_sbp_hdr) +
1922 sizeof(struct qeth_sbp_query_cmds_supp);
1923 cmd->data.sbp.hdr.command_code =
1924 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1925 cmd->data.sbp.hdr.used_total = 1;
1926 cmd->data.sbp.hdr.seq_no = 1;
1927 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1928 (void *)&cbctl) ||
1929 qeth_bridgeport_makerc(card, &cbctl,
1930 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1931 /* non-zero makerc signifies failure, and produce messages */
1932 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1933 return;
1934 }
1935 card->options.sbp.supported_funcs = cbctl.data.supported;
1936 }
1937
1938 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1939 struct qeth_reply *reply, unsigned long data)
1940 {
1941 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1942 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1943 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1944
1945 QETH_CARD_TEXT(card, 2, "brqprtcb");
1946 cbctl->ipa_rc = cmd->hdr.return_code;
1947 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1948 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1949 return 0;
1950 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1951 cbctl->cmd_rc = 0xffff;
1952 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1953 return 0;
1954 }
1955 /* first entry contains the state of the local port */
1956 if (qports->num_entries > 0) {
1957 if (cbctl->data.qports.role)
1958 *cbctl->data.qports.role = qports->entry[0].role;
1959 if (cbctl->data.qports.state)
1960 *cbctl->data.qports.state = qports->entry[0].state;
1961 }
1962 return 0;
1963 }
1964
1965 /**
1966 * qeth_bridgeport_query_ports() - query local bridgeport status.
1967 * @card: qeth_card structure pointer.
1968 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1969 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1970 *
1971 * Returns negative errno-compatible error indication or 0 on success.
1972 *
1973 * 'role' and 'state' are not updated in case of hardware operation failure.
1974 */
1975 int qeth_bridgeport_query_ports(struct qeth_card *card,
1976 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1977 {
1978 int rc = 0;
1979 struct qeth_cmd_buffer *iob;
1980 struct qeth_ipa_cmd *cmd;
1981 struct _qeth_sbp_cbctl cbctl = {
1982 .data = {
1983 .qports = {
1984 .role = role,
1985 .state = state,
1986 },
1987 },
1988 };
1989
1990 QETH_CARD_TEXT(card, 2, "brqports");
1991 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1992 return -EOPNOTSUPP;
1993 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1994 if (!iob)
1995 return -ENOMEM;
1996 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1997 cmd->data.sbp.hdr.cmdlength =
1998 sizeof(struct qeth_ipacmd_sbp_hdr);
1999 cmd->data.sbp.hdr.command_code =
2000 IPA_SBP_QUERY_BRIDGE_PORTS;
2001 cmd->data.sbp.hdr.used_total = 1;
2002 cmd->data.sbp.hdr.seq_no = 1;
2003 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
2004 (void *)&cbctl);
2005 if (rc < 0)
2006 return rc;
2007 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
2008 }
2009 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
2010
2011 static int qeth_bridgeport_set_cb(struct qeth_card *card,
2012 struct qeth_reply *reply, unsigned long data)
2013 {
2014 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
2015 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
2016 QETH_CARD_TEXT(card, 2, "brsetrcb");
2017 cbctl->ipa_rc = cmd->hdr.return_code;
2018 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
2019 return 0;
2020 }
2021
2022 /**
2023 * qeth_bridgeport_setrole() - Assign primary role to the port.
2024 * @card: qeth_card structure pointer.
2025 * @role: Role to assign.
2026 *
2027 * Returns negative errno-compatible error indication or 0 on success.
2028 */
2029 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
2030 {
2031 int rc = 0;
2032 int cmdlength;
2033 struct qeth_cmd_buffer *iob;
2034 struct qeth_ipa_cmd *cmd;
2035 struct _qeth_sbp_cbctl cbctl;
2036 enum qeth_ipa_sbp_cmd setcmd;
2037
2038 QETH_CARD_TEXT(card, 2, "brsetrol");
2039 switch (role) {
2040 case QETH_SBP_ROLE_NONE:
2041 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
2042 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2043 sizeof(struct qeth_sbp_reset_role);
2044 break;
2045 case QETH_SBP_ROLE_PRIMARY:
2046 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
2047 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2048 sizeof(struct qeth_sbp_set_primary);
2049 break;
2050 case QETH_SBP_ROLE_SECONDARY:
2051 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
2052 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2053 sizeof(struct qeth_sbp_set_secondary);
2054 break;
2055 default:
2056 return -EINVAL;
2057 }
2058 if (!(card->options.sbp.supported_funcs & setcmd))
2059 return -EOPNOTSUPP;
2060 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
2061 if (!iob)
2062 return -ENOMEM;
2063 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2064 cmd->data.sbp.hdr.cmdlength = cmdlength;
2065 cmd->data.sbp.hdr.command_code = setcmd;
2066 cmd->data.sbp.hdr.used_total = 1;
2067 cmd->data.sbp.hdr.seq_no = 1;
2068 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
2069 (void *)&cbctl);
2070 if (rc < 0)
2071 return rc;
2072 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
2073 }
2074
2075 /**
2076 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
2077 * @card: qeth_card structure pointer, for debug messages.
2078 *
2079 * Returns negative errno-compatible error indication or 0 on success.
2080 */
2081 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2082 {
2083 int rc;
2084
2085 if (pnso_rc == 0)
2086 switch (response) {
2087 case 0x0001:
2088 rc = 0;
2089 break;
2090 case 0x0004:
2091 case 0x0100:
2092 case 0x0106:
2093 rc = -EOPNOTSUPP;
2094 dev_err(&card->gdev->dev,
2095 "Setting address notification failed\n");
2096 break;
2097 case 0x0107:
2098 rc = -EAGAIN;
2099 break;
2100 default:
2101 rc = -EIO;
2102 }
2103 else
2104 rc = -EIO;
2105
2106 if (rc) {
2107 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2108 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2109 }
2110 return rc;
2111 }
2112
2113 static void qeth_bridgeport_an_set_cb(void *priv,
2114 enum qdio_brinfo_entry_type type, void *entry)
2115 {
2116 struct qeth_card *card = (struct qeth_card *)priv;
2117 struct qdio_brinfo_entry_l2 *l2entry;
2118 u8 code;
2119
2120 if (type != l2_addr_lnid) {
2121 WARN_ON_ONCE(1);
2122 return;
2123 }
2124
2125 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2126 code = IPA_ADDR_CHANGE_CODE_MACADDR;
2127 if (l2entry->addr_lnid.lnid)
2128 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2129 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2130 (struct net_if_token *)&l2entry->nit,
2131 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2132 }
2133
2134 /**
2135 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2136 * @card: qeth_card structure pointer.
2137 * @enable: 0 - disable, non-zero - enable notifications
2138 *
2139 * Returns negative errno-compatible error indication or 0 on success.
2140 *
2141 * On enable, emits a series of address notifications udev events for all
2142 * currently registered hosts.
2143 */
2144 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2145 {
2146 int rc;
2147 u16 response;
2148 struct ccw_device *ddev;
2149 struct subchannel_id schid;
2150
2151 if (!card)
2152 return -EINVAL;
2153 if (!card->options.sbp.supported_funcs)
2154 return -EOPNOTSUPP;
2155 ddev = CARD_DDEV(card);
2156 ccw_device_get_schid(ddev, &schid);
2157
2158 if (enable) {
2159 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2160 rc = qdio_pnso_brinfo(schid, 1, &response,
2161 qeth_bridgeport_an_set_cb, card);
2162 } else
2163 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2164 return qeth_anset_makerc(card, rc, response);
2165 }
2166 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2167
2168 module_init(qeth_l2_init);
2169 module_exit(qeth_l2_exit);
2170 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2171 MODULE_DESCRIPTION("qeth layer 2 discipline");
2172 MODULE_LICENSE("GPL");
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