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Merge tag 'at91-ab-4.13-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/abellon...
[mirror_ubuntu-bionic-kernel.git] / drivers / s390 / net / qeth_l2_main.c
1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/slab.h>
18 #include <linux/etherdevice.h>
19 #include <linux/ip.h>
20 #include <linux/list.h>
21 #include <linux/hash.h>
22 #include <linux/hashtable.h>
23 #include <linux/string.h>
24 #include "qeth_core.h"
25 #include "qeth_l2.h"
26
27 static int qeth_l2_set_offline(struct ccwgroup_device *);
28 static int qeth_l2_stop(struct net_device *);
29 static void qeth_l2_set_rx_mode(struct net_device *);
30 static void qeth_bridgeport_query_support(struct qeth_card *card);
31 static void qeth_bridge_state_change(struct qeth_card *card,
32 struct qeth_ipa_cmd *cmd);
33 static void qeth_bridge_host_event(struct qeth_card *card,
34 struct qeth_ipa_cmd *cmd);
35
36 static int qeth_l2_verify_dev(struct net_device *dev)
37 {
38 struct qeth_card *card;
39 unsigned long flags;
40 int rc = 0;
41
42 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
43 list_for_each_entry(card, &qeth_core_card_list.list, list) {
44 if (card->dev == dev) {
45 rc = QETH_REAL_CARD;
46 break;
47 }
48 }
49 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
50
51 return rc;
52 }
53
54 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
55 {
56 struct qeth_card *card;
57 struct net_device *ndev;
58 __u16 temp_dev_no;
59 unsigned long flags;
60 struct ccw_dev_id read_devid;
61
62 ndev = NULL;
63 memcpy(&temp_dev_no, read_dev_no, 2);
64 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
65 list_for_each_entry(card, &qeth_core_card_list.list, list) {
66 ccw_device_get_id(CARD_RDEV(card), &read_devid);
67 if (read_devid.devno == temp_dev_no) {
68 ndev = card->dev;
69 break;
70 }
71 }
72 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
73 return ndev;
74 }
75
76 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
77 {
78 int rc;
79
80 if (retcode)
81 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
82 switch (retcode) {
83 case IPA_RC_SUCCESS:
84 rc = 0;
85 break;
86 case IPA_RC_L2_UNSUPPORTED_CMD:
87 rc = -EOPNOTSUPP;
88 break;
89 case IPA_RC_L2_ADDR_TABLE_FULL:
90 rc = -ENOSPC;
91 break;
92 case IPA_RC_L2_DUP_MAC:
93 case IPA_RC_L2_DUP_LAYER3_MAC:
94 rc = -EEXIST;
95 break;
96 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
97 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
98 rc = -EPERM;
99 break;
100 case IPA_RC_L2_MAC_NOT_FOUND:
101 rc = -ENOENT;
102 break;
103 case -ENOMEM:
104 rc = -ENOMEM;
105 break;
106 default:
107 rc = -EIO;
108 break;
109 }
110 return rc;
111 }
112
113 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
114 enum qeth_ipa_cmds ipacmd)
115 {
116 struct qeth_ipa_cmd *cmd;
117 struct qeth_cmd_buffer *iob;
118
119 QETH_CARD_TEXT(card, 2, "L2sdmac");
120 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
121 if (!iob)
122 return -ENOMEM;
123 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
124 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
125 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
126 return qeth_setdel_makerc(card, qeth_send_ipa_cmd(card, iob,
127 NULL, NULL));
128 }
129
130 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
131 {
132 int rc;
133
134 QETH_CARD_TEXT(card, 2, "L2Setmac");
135 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
136 if (rc == 0) {
137 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
138 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
139 dev_info(&card->gdev->dev,
140 "MAC address %pM successfully registered on device %s\n",
141 card->dev->dev_addr, card->dev->name);
142 } else {
143 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
144 switch (rc) {
145 case -EEXIST:
146 dev_warn(&card->gdev->dev,
147 "MAC address %pM already exists\n", mac);
148 break;
149 case -EPERM:
150 dev_warn(&card->gdev->dev,
151 "MAC address %pM is not authorized\n", mac);
152 break;
153 }
154 }
155 return rc;
156 }
157
158 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
159 {
160 int rc;
161
162 QETH_CARD_TEXT(card, 2, "L2Delmac");
163 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
164 return 0;
165 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC);
166 if (rc == 0)
167 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
168 return rc;
169 }
170
171 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
172 {
173 int rc;
174
175 QETH_CARD_TEXT(card, 2, "L2Sgmac");
176 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC);
177 if (rc == -EEXIST)
178 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
179 mac, QETH_CARD_IFNAME(card));
180 else if (rc)
181 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
182 mac, QETH_CARD_IFNAME(card), rc);
183 return rc;
184 }
185
186 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
187 {
188 int rc;
189
190 QETH_CARD_TEXT(card, 2, "L2Dgmac");
191 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC);
192 if (rc)
193 QETH_DBF_MESSAGE(2,
194 "Could not delete group MAC %pM on %s: %d\n",
195 mac, QETH_CARD_IFNAME(card), rc);
196 return rc;
197 }
198
199 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
200 {
201 if (mac->is_uc) {
202 return qeth_l2_send_setdelmac(card, mac->mac_addr,
203 IPA_CMD_SETVMAC);
204 } else {
205 return qeth_l2_send_setgroupmac(card, mac->mac_addr);
206 }
207 }
208
209 static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac)
210 {
211 if (mac->is_uc) {
212 return qeth_l2_send_setdelmac(card, mac->mac_addr,
213 IPA_CMD_DELVMAC);
214 } else {
215 return qeth_l2_send_delgroupmac(card, mac->mac_addr);
216 }
217 }
218
219 static void qeth_l2_del_all_macs(struct qeth_card *card)
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 hash_del(&mac->hnode);
228 kfree(mac);
229 }
230 spin_unlock_bh(&card->mclock);
231 }
232
233 static inline u32 qeth_l2_mac_hash(const u8 *addr)
234 {
235 return get_unaligned((u32 *)(&addr[2]));
236 }
237
238 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
239 struct sk_buff *skb)
240 {
241 if (card->info.type == QETH_CARD_TYPE_OSN)
242 return RTN_UNSPEC;
243 if (is_broadcast_ether_addr(skb->data))
244 return RTN_BROADCAST;
245 if (is_multicast_ether_addr(skb->data))
246 return RTN_MULTICAST;
247 return RTN_UNSPEC;
248 }
249
250 static inline void qeth_l2_hdr_csum(struct qeth_card *card,
251 struct qeth_hdr *hdr, struct sk_buff *skb)
252 {
253 struct iphdr *iph = ip_hdr(skb);
254
255 /* tcph->check contains already the pseudo hdr checksum
256 * so just set the header flags
257 */
258 if (iph->protocol == IPPROTO_UDP)
259 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
260 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
261 QETH_HDR_EXT_CSUM_HDR_REQ;
262 iph->check = 0;
263 if (card->options.performance_stats)
264 card->perf_stats.tx_csum++;
265 }
266
267 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
268 struct sk_buff *skb, int cast_type)
269 {
270 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
271
272 memset(hdr, 0, sizeof(struct qeth_hdr));
273 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
274
275 /* set byte byte 3 to casting flags */
276 if (cast_type == RTN_MULTICAST)
277 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
278 else if (cast_type == RTN_BROADCAST)
279 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
280 else
281 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
282
283 hdr->hdr.l2.pkt_length = skb->len - sizeof(struct qeth_hdr);
284 /* VSWITCH relies on the VLAN
285 * information to be present in
286 * the QDIO header */
287 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
288 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
289 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
290 }
291 }
292
293 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
294 struct qeth_reply *reply, unsigned long data)
295 {
296 struct qeth_ipa_cmd *cmd;
297
298 QETH_CARD_TEXT(card, 2, "L2sdvcb");
299 cmd = (struct qeth_ipa_cmd *) data;
300 if (cmd->hdr.return_code) {
301 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
302 "Continuing\n", cmd->data.setdelvlan.vlan_id,
303 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
304 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
305 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
306 }
307 return 0;
308 }
309
310 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
311 enum qeth_ipa_cmds ipacmd)
312 {
313 struct qeth_ipa_cmd *cmd;
314 struct qeth_cmd_buffer *iob;
315
316 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
317 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
318 if (!iob)
319 return -ENOMEM;
320 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
321 cmd->data.setdelvlan.vlan_id = i;
322 return qeth_send_ipa_cmd(card, iob,
323 qeth_l2_send_setdelvlan_cb, NULL);
324 }
325
326 static void qeth_l2_process_vlans(struct qeth_card *card)
327 {
328 struct qeth_vlan_vid *id;
329 QETH_CARD_TEXT(card, 3, "L2prcvln");
330 spin_lock_bh(&card->vlanlock);
331 list_for_each_entry(id, &card->vid_list, list) {
332 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
333 }
334 spin_unlock_bh(&card->vlanlock);
335 }
336
337 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
338 __be16 proto, u16 vid)
339 {
340 struct qeth_card *card = dev->ml_priv;
341 struct qeth_vlan_vid *id;
342 int rc;
343
344 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
345 if (!vid)
346 return 0;
347 if (card->info.type == QETH_CARD_TYPE_OSM) {
348 QETH_CARD_TEXT(card, 3, "aidOSM");
349 return 0;
350 }
351 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
352 QETH_CARD_TEXT(card, 3, "aidREC");
353 return 0;
354 }
355 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
356 if (id) {
357 id->vid = vid;
358 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
359 if (rc) {
360 kfree(id);
361 return rc;
362 }
363 spin_lock_bh(&card->vlanlock);
364 list_add_tail(&id->list, &card->vid_list);
365 spin_unlock_bh(&card->vlanlock);
366 } else {
367 return -ENOMEM;
368 }
369 return 0;
370 }
371
372 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
373 __be16 proto, u16 vid)
374 {
375 struct qeth_vlan_vid *id, *tmpid = NULL;
376 struct qeth_card *card = dev->ml_priv;
377 int rc = 0;
378
379 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
380 if (card->info.type == QETH_CARD_TYPE_OSM) {
381 QETH_CARD_TEXT(card, 3, "kidOSM");
382 return 0;
383 }
384 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
385 QETH_CARD_TEXT(card, 3, "kidREC");
386 return 0;
387 }
388 spin_lock_bh(&card->vlanlock);
389 list_for_each_entry(id, &card->vid_list, list) {
390 if (id->vid == vid) {
391 list_del(&id->list);
392 tmpid = id;
393 break;
394 }
395 }
396 spin_unlock_bh(&card->vlanlock);
397 if (tmpid) {
398 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
399 kfree(tmpid);
400 }
401 qeth_l2_set_rx_mode(card->dev);
402 return rc;
403 }
404
405 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
406 {
407 QETH_DBF_TEXT(SETUP , 2, "stopcard");
408 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
409
410 qeth_set_allowed_threads(card, 0, 1);
411 if (card->read.state == CH_STATE_UP &&
412 card->write.state == CH_STATE_UP &&
413 (card->state == CARD_STATE_UP)) {
414 if (recovery_mode &&
415 card->info.type != QETH_CARD_TYPE_OSN) {
416 qeth_l2_stop(card->dev);
417 } else {
418 rtnl_lock();
419 dev_close(card->dev);
420 rtnl_unlock();
421 }
422 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
423 card->state = CARD_STATE_SOFTSETUP;
424 }
425 if (card->state == CARD_STATE_SOFTSETUP) {
426 qeth_l2_del_all_macs(card);
427 qeth_clear_ipacmd_list(card);
428 card->state = CARD_STATE_HARDSETUP;
429 }
430 if (card->state == CARD_STATE_HARDSETUP) {
431 qeth_qdio_clear_card(card, 0);
432 qeth_clear_qdio_buffers(card);
433 qeth_clear_working_pool_list(card);
434 card->state = CARD_STATE_DOWN;
435 }
436 if (card->state == CARD_STATE_DOWN) {
437 qeth_clear_cmd_buffers(&card->read);
438 qeth_clear_cmd_buffers(&card->write);
439 }
440 }
441
442 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
443 int budget, int *done)
444 {
445 int work_done = 0;
446 struct sk_buff *skb;
447 struct qeth_hdr *hdr;
448 unsigned int len;
449
450 *done = 0;
451 WARN_ON_ONCE(!budget);
452 while (budget) {
453 skb = qeth_core_get_next_skb(card,
454 &card->qdio.in_q->bufs[card->rx.b_index],
455 &card->rx.b_element, &card->rx.e_offset, &hdr);
456 if (!skb) {
457 *done = 1;
458 break;
459 }
460 skb->dev = card->dev;
461 switch (hdr->hdr.l2.id) {
462 case QETH_HEADER_TYPE_LAYER2:
463 skb->pkt_type = PACKET_HOST;
464 skb->protocol = eth_type_trans(skb, skb->dev);
465 if ((card->dev->features & NETIF_F_RXCSUM)
466 && ((hdr->hdr.l2.flags[1] &
467 (QETH_HDR_EXT_CSUM_HDR_REQ |
468 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
469 (QETH_HDR_EXT_CSUM_HDR_REQ |
470 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
471 skb->ip_summed = CHECKSUM_UNNECESSARY;
472 else
473 skb->ip_summed = CHECKSUM_NONE;
474 if (skb->protocol == htons(ETH_P_802_2))
475 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
476 len = skb->len;
477 napi_gro_receive(&card->napi, skb);
478 break;
479 case QETH_HEADER_TYPE_OSN:
480 if (card->info.type == QETH_CARD_TYPE_OSN) {
481 skb_push(skb, sizeof(struct qeth_hdr));
482 skb_copy_to_linear_data(skb, hdr,
483 sizeof(struct qeth_hdr));
484 len = skb->len;
485 card->osn_info.data_cb(skb);
486 break;
487 }
488 /* else unknown */
489 default:
490 dev_kfree_skb_any(skb);
491 QETH_CARD_TEXT(card, 3, "inbunkno");
492 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
493 continue;
494 }
495 work_done++;
496 budget--;
497 card->stats.rx_packets++;
498 card->stats.rx_bytes += len;
499 }
500 return work_done;
501 }
502
503 static int qeth_l2_request_initial_mac(struct qeth_card *card)
504 {
505 int rc = 0;
506 char vendor_pre[] = {0x02, 0x00, 0x00};
507
508 QETH_DBF_TEXT(SETUP, 2, "doL2init");
509 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
510
511 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
512 rc = qeth_query_setadapterparms(card);
513 if (rc) {
514 QETH_DBF_MESSAGE(2, "could not query adapter "
515 "parameters on device %s: x%x\n",
516 CARD_BUS_ID(card), rc);
517 }
518 }
519
520 if (card->info.type == QETH_CARD_TYPE_IQD ||
521 card->info.type == QETH_CARD_TYPE_OSM ||
522 card->info.type == QETH_CARD_TYPE_OSX ||
523 card->info.guestlan) {
524 rc = qeth_setadpparms_change_macaddr(card);
525 if (rc) {
526 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
527 "device %s: x%x\n", CARD_BUS_ID(card), rc);
528 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
529 return rc;
530 }
531 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
532 } else {
533 eth_random_addr(card->dev->dev_addr);
534 memcpy(card->dev->dev_addr, vendor_pre, 3);
535 }
536 return 0;
537 }
538
539 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
540 {
541 struct sockaddr *addr = p;
542 struct qeth_card *card = dev->ml_priv;
543 int rc = 0;
544
545 QETH_CARD_TEXT(card, 3, "setmac");
546
547 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
548 QETH_CARD_TEXT(card, 3, "setmcINV");
549 return -EOPNOTSUPP;
550 }
551
552 if (card->info.type == QETH_CARD_TYPE_OSN ||
553 card->info.type == QETH_CARD_TYPE_OSM ||
554 card->info.type == QETH_CARD_TYPE_OSX) {
555 QETH_CARD_TEXT(card, 3, "setmcTYP");
556 return -EOPNOTSUPP;
557 }
558 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
559 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
560 QETH_CARD_TEXT(card, 3, "setmcREC");
561 return -ERESTARTSYS;
562 }
563 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
564 if (!rc || (rc == -ENOENT))
565 rc = qeth_l2_send_setmac(card, addr->sa_data);
566 return rc ? -EINVAL : 0;
567 }
568
569 static void qeth_promisc_to_bridge(struct qeth_card *card)
570 {
571 struct net_device *dev = card->dev;
572 enum qeth_ipa_promisc_modes promisc_mode;
573 int role;
574 int rc;
575
576 QETH_CARD_TEXT(card, 3, "pmisc2br");
577
578 if (!card->options.sbp.reflect_promisc)
579 return;
580 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
581 : SET_PROMISC_MODE_OFF;
582 if (promisc_mode == card->info.promisc_mode)
583 return;
584
585 if (promisc_mode == SET_PROMISC_MODE_ON) {
586 if (card->options.sbp.reflect_promisc_primary)
587 role = QETH_SBP_ROLE_PRIMARY;
588 else
589 role = QETH_SBP_ROLE_SECONDARY;
590 } else
591 role = QETH_SBP_ROLE_NONE;
592
593 rc = qeth_bridgeport_setrole(card, role);
594 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
595 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
596 if (!rc) {
597 card->options.sbp.role = role;
598 card->info.promisc_mode = promisc_mode;
599 }
600
601 }
602 /* New MAC address is added to the hash table and marked to be written on card
603 * only if there is not in the hash table storage already
604 *
605 */
606 static void
607 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
608 {
609 struct qeth_mac *mac;
610
611 hash_for_each_possible(card->mac_htable, mac, hnode,
612 qeth_l2_mac_hash(ha->addr)) {
613 if (is_uc == mac->is_uc &&
614 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
615 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
616 return;
617 }
618 }
619
620 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
621
622 if (!mac)
623 return;
624
625 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
626 mac->is_uc = is_uc;
627 mac->disp_flag = QETH_DISP_ADDR_ADD;
628
629 hash_add(card->mac_htable, &mac->hnode,
630 qeth_l2_mac_hash(mac->mac_addr));
631
632 }
633
634 static void qeth_l2_set_rx_mode(struct net_device *dev)
635 {
636 struct qeth_card *card = dev->ml_priv;
637 struct netdev_hw_addr *ha;
638 struct qeth_mac *mac;
639 struct hlist_node *tmp;
640 int i;
641 int rc;
642
643 if (card->info.type == QETH_CARD_TYPE_OSN)
644 return;
645
646 QETH_CARD_TEXT(card, 3, "setmulti");
647 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
648 (card->state != CARD_STATE_UP))
649 return;
650
651 spin_lock_bh(&card->mclock);
652
653 netdev_for_each_mc_addr(ha, dev)
654 qeth_l2_add_mac(card, ha, 0);
655
656 netdev_for_each_uc_addr(ha, dev)
657 qeth_l2_add_mac(card, ha, 1);
658
659 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
660 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
661 qeth_l2_remove_mac(card, mac);
662 hash_del(&mac->hnode);
663 kfree(mac);
664
665 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
666 rc = qeth_l2_write_mac(card, mac);
667 if (rc) {
668 hash_del(&mac->hnode);
669 kfree(mac);
670 } else
671 mac->disp_flag = QETH_DISP_ADDR_DELETE;
672 } else
673 mac->disp_flag = QETH_DISP_ADDR_DELETE;
674 }
675
676 spin_unlock_bh(&card->mclock);
677
678 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
679 qeth_setadp_promisc_mode(card);
680 else
681 qeth_promisc_to_bridge(card);
682 }
683
684 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
685 struct net_device *dev)
686 {
687 int rc;
688 struct qeth_hdr *hdr = NULL;
689 int elements = 0;
690 struct qeth_card *card = dev->ml_priv;
691 struct sk_buff *new_skb = skb;
692 int cast_type = qeth_l2_get_cast_type(card, skb);
693 struct qeth_qdio_out_q *queue;
694 int tx_bytes = skb->len;
695 int data_offset = -1;
696 int elements_needed = 0;
697 int hd_len = 0;
698 int nr_frags;
699
700 if (card->qdio.do_prio_queueing || (cast_type &&
701 card->info.is_multicast_different))
702 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
703 qeth_get_ip_version(skb), cast_type)];
704 else
705 queue = card->qdio.out_qs[card->qdio.default_out_queue];
706
707 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
708 card->stats.tx_carrier_errors++;
709 goto tx_drop;
710 }
711
712 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
713 (skb->protocol == htons(ETH_P_IPV6)))
714 goto tx_drop;
715
716 if (card->options.performance_stats) {
717 card->perf_stats.outbound_cnt++;
718 card->perf_stats.outbound_start_time = qeth_get_micros();
719 }
720 netif_stop_queue(dev);
721
722 /* fix hardware limitation: as long as we do not have sbal
723 * chaining we can not send long frag lists
724 */
725 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
726 !qeth_get_elements_no(card, new_skb, 0, 0)) {
727 int lin_rc = skb_linearize(new_skb);
728
729 if (card->options.performance_stats) {
730 if (lin_rc)
731 card->perf_stats.tx_linfail++;
732 else
733 card->perf_stats.tx_lin++;
734 }
735 if (lin_rc)
736 goto tx_drop;
737 }
738
739 if (card->info.type == QETH_CARD_TYPE_OSN)
740 hdr = (struct qeth_hdr *)skb->data;
741 else {
742 if (card->info.type == QETH_CARD_TYPE_IQD) {
743 new_skb = skb;
744 data_offset = ETH_HLEN;
745 hd_len = ETH_HLEN;
746 hdr = kmem_cache_alloc(qeth_core_header_cache,
747 GFP_ATOMIC);
748 if (!hdr)
749 goto tx_drop;
750 elements_needed++;
751 skb_reset_mac_header(new_skb);
752 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
753 hdr->hdr.l2.pkt_length = new_skb->len;
754 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
755 skb_mac_header(new_skb), ETH_HLEN);
756 } else {
757 /* create a clone with writeable headroom */
758 new_skb = skb_realloc_headroom(skb,
759 sizeof(struct qeth_hdr));
760 if (!new_skb)
761 goto tx_drop;
762 hdr = (struct qeth_hdr *)skb_push(new_skb,
763 sizeof(struct qeth_hdr));
764 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
765 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
766 if (new_skb->ip_summed == CHECKSUM_PARTIAL)
767 qeth_l2_hdr_csum(card, hdr, new_skb);
768 }
769 }
770
771 elements = qeth_get_elements_no(card, new_skb, elements_needed,
772 (data_offset > 0) ? data_offset : 0);
773 if (!elements) {
774 if (data_offset >= 0)
775 kmem_cache_free(qeth_core_header_cache, hdr);
776 goto tx_drop;
777 }
778
779 if (card->info.type != QETH_CARD_TYPE_IQD) {
780 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
781 sizeof(struct qeth_hdr_layer2)))
782 goto tx_drop;
783 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
784 elements);
785 } else
786 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
787 data_offset, hd_len);
788 if (!rc) {
789 card->stats.tx_packets++;
790 card->stats.tx_bytes += tx_bytes;
791 if (card->options.performance_stats) {
792 nr_frags = skb_shinfo(new_skb)->nr_frags;
793 if (nr_frags) {
794 card->perf_stats.sg_skbs_sent++;
795 /* nr_frags + skb->data */
796 card->perf_stats.sg_frags_sent += nr_frags + 1;
797 }
798 }
799 if (new_skb != skb)
800 dev_kfree_skb_any(skb);
801 rc = NETDEV_TX_OK;
802 } else {
803 if (data_offset >= 0)
804 kmem_cache_free(qeth_core_header_cache, hdr);
805
806 if (rc == -EBUSY) {
807 if (new_skb != skb)
808 dev_kfree_skb_any(new_skb);
809 return NETDEV_TX_BUSY;
810 } else
811 goto tx_drop;
812 }
813
814 netif_wake_queue(dev);
815 if (card->options.performance_stats)
816 card->perf_stats.outbound_time += qeth_get_micros() -
817 card->perf_stats.outbound_start_time;
818 return rc;
819
820 tx_drop:
821 card->stats.tx_dropped++;
822 card->stats.tx_errors++;
823 if ((new_skb != skb) && new_skb)
824 dev_kfree_skb_any(new_skb);
825 dev_kfree_skb_any(skb);
826 netif_wake_queue(dev);
827 return NETDEV_TX_OK;
828 }
829
830 static int __qeth_l2_open(struct net_device *dev)
831 {
832 struct qeth_card *card = dev->ml_priv;
833 int rc = 0;
834
835 QETH_CARD_TEXT(card, 4, "qethopen");
836 if (card->state == CARD_STATE_UP)
837 return rc;
838 if (card->state != CARD_STATE_SOFTSETUP)
839 return -ENODEV;
840
841 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
842 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
843 QETH_CARD_TEXT(card, 4, "nomacadr");
844 return -EPERM;
845 }
846 card->data.state = CH_STATE_UP;
847 card->state = CARD_STATE_UP;
848 netif_start_queue(dev);
849
850 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
851 napi_enable(&card->napi);
852 napi_schedule(&card->napi);
853 } else
854 rc = -EIO;
855 return rc;
856 }
857
858 static int qeth_l2_open(struct net_device *dev)
859 {
860 struct qeth_card *card = dev->ml_priv;
861
862 QETH_CARD_TEXT(card, 5, "qethope_");
863 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
864 QETH_CARD_TEXT(card, 3, "openREC");
865 return -ERESTARTSYS;
866 }
867 return __qeth_l2_open(dev);
868 }
869
870 static int qeth_l2_stop(struct net_device *dev)
871 {
872 struct qeth_card *card = dev->ml_priv;
873
874 QETH_CARD_TEXT(card, 4, "qethstop");
875 netif_tx_disable(dev);
876 if (card->state == CARD_STATE_UP) {
877 card->state = CARD_STATE_SOFTSETUP;
878 napi_disable(&card->napi);
879 }
880 return 0;
881 }
882
883 static const struct device_type qeth_l2_devtype = {
884 .name = "qeth_layer2",
885 .groups = qeth_l2_attr_groups,
886 };
887
888 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
889 {
890 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
891 int rc;
892
893 if (gdev->dev.type == &qeth_generic_devtype) {
894 rc = qeth_l2_create_device_attributes(&gdev->dev);
895 if (rc)
896 return rc;
897 }
898 INIT_LIST_HEAD(&card->vid_list);
899 hash_init(card->mac_htable);
900 card->options.layer2 = 1;
901 card->info.hwtrap = 0;
902 return 0;
903 }
904
905 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
906 {
907 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
908
909 if (cgdev->dev.type == &qeth_generic_devtype)
910 qeth_l2_remove_device_attributes(&cgdev->dev);
911 qeth_set_allowed_threads(card, 0, 1);
912 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
913
914 if (cgdev->state == CCWGROUP_ONLINE)
915 qeth_l2_set_offline(cgdev);
916
917 if (card->dev) {
918 netif_napi_del(&card->napi);
919 unregister_netdev(card->dev);
920 card->dev = NULL;
921 }
922 return;
923 }
924
925 static const struct ethtool_ops qeth_l2_ethtool_ops = {
926 .get_link = ethtool_op_get_link,
927 .get_strings = qeth_core_get_strings,
928 .get_ethtool_stats = qeth_core_get_ethtool_stats,
929 .get_sset_count = qeth_core_get_sset_count,
930 .get_drvinfo = qeth_core_get_drvinfo,
931 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
932 };
933
934 static const struct ethtool_ops qeth_l2_osn_ops = {
935 .get_strings = qeth_core_get_strings,
936 .get_ethtool_stats = qeth_core_get_ethtool_stats,
937 .get_sset_count = qeth_core_get_sset_count,
938 .get_drvinfo = qeth_core_get_drvinfo,
939 };
940
941 static const struct net_device_ops qeth_l2_netdev_ops = {
942 .ndo_open = qeth_l2_open,
943 .ndo_stop = qeth_l2_stop,
944 .ndo_get_stats = qeth_get_stats,
945 .ndo_start_xmit = qeth_l2_hard_start_xmit,
946 .ndo_validate_addr = eth_validate_addr,
947 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
948 .ndo_do_ioctl = qeth_do_ioctl,
949 .ndo_set_mac_address = qeth_l2_set_mac_address,
950 .ndo_change_mtu = qeth_change_mtu,
951 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
952 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
953 .ndo_tx_timeout = qeth_tx_timeout,
954 .ndo_fix_features = qeth_fix_features,
955 .ndo_set_features = qeth_set_features
956 };
957
958 static int qeth_l2_setup_netdev(struct qeth_card *card)
959 {
960 switch (card->info.type) {
961 case QETH_CARD_TYPE_IQD:
962 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
963 ether_setup);
964 break;
965 case QETH_CARD_TYPE_OSN:
966 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
967 ether_setup);
968 break;
969 default:
970 card->dev = alloc_etherdev(0);
971 }
972
973 if (!card->dev)
974 return -ENODEV;
975
976 card->dev->ml_priv = card;
977 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
978 card->dev->mtu = card->info.initial_mtu;
979 card->dev->min_mtu = 64;
980 card->dev->max_mtu = ETH_MAX_MTU;
981 card->dev->netdev_ops = &qeth_l2_netdev_ops;
982 if (card->info.type == QETH_CARD_TYPE_OSN) {
983 card->dev->ethtool_ops = &qeth_l2_osn_ops;
984 card->dev->flags |= IFF_NOARP;
985 } else {
986 card->dev->ethtool_ops = &qeth_l2_ethtool_ops;
987 }
988 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
989 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
990 card->dev->hw_features = NETIF_F_SG;
991 card->dev->vlan_features = NETIF_F_SG;
992 /* OSA 3S and earlier has no RX/TX support */
993 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
994 card->dev->hw_features |= NETIF_F_IP_CSUM;
995 card->dev->vlan_features |= NETIF_F_IP_CSUM;
996 }
997 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
998 card->dev->hw_features |= NETIF_F_RXCSUM;
999 card->dev->vlan_features |= NETIF_F_RXCSUM;
1000 }
1001 }
1002 card->info.broadcast_capable = 1;
1003 qeth_l2_request_initial_mac(card);
1004 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
1005 PAGE_SIZE;
1006 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1007 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1008 netif_carrier_off(card->dev);
1009 return register_netdev(card->dev);
1010 }
1011
1012 static int qeth_l2_start_ipassists(struct qeth_card *card)
1013 {
1014 /* configure isolation level */
1015 if (qeth_set_access_ctrl_online(card, 0))
1016 return -ENODEV;
1017 return 0;
1018 }
1019
1020 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1021 {
1022 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1023 int rc = 0;
1024 enum qeth_card_states recover_flag;
1025
1026 mutex_lock(&card->discipline_mutex);
1027 mutex_lock(&card->conf_mutex);
1028 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1029 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1030
1031 recover_flag = card->state;
1032 rc = qeth_core_hardsetup_card(card);
1033 if (rc) {
1034 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1035 rc = -ENODEV;
1036 goto out_remove;
1037 }
1038 qeth_bridgeport_query_support(card);
1039 if (card->options.sbp.supported_funcs)
1040 dev_info(&card->gdev->dev,
1041 "The device represents a Bridge Capable Port\n");
1042 qeth_trace_features(card);
1043
1044 if (!card->dev && qeth_l2_setup_netdev(card)) {
1045 rc = -ENODEV;
1046 goto out_remove;
1047 }
1048
1049 if (card->info.type != QETH_CARD_TYPE_OSN)
1050 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1051
1052 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1053 if (card->info.hwtrap &&
1054 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1055 card->info.hwtrap = 0;
1056 } else
1057 card->info.hwtrap = 0;
1058
1059 qeth_l2_setup_bridgeport_attrs(card);
1060
1061 card->state = CARD_STATE_HARDSETUP;
1062 memset(&card->rx, 0, sizeof(struct qeth_rx));
1063 qeth_print_status_message(card);
1064
1065 /* softsetup */
1066 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1067
1068 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1069 (card->info.type == QETH_CARD_TYPE_OSX)) {
1070 rc = qeth_l2_start_ipassists(card);
1071 if (rc)
1072 goto out_remove;
1073 }
1074
1075 if (card->info.type != QETH_CARD_TYPE_OSN &&
1076 card->info.type != QETH_CARD_TYPE_OSM)
1077 qeth_l2_process_vlans(card);
1078
1079 netif_tx_disable(card->dev);
1080
1081 rc = qeth_init_qdio_queues(card);
1082 if (rc) {
1083 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1084 rc = -ENODEV;
1085 goto out_remove;
1086 }
1087 card->state = CARD_STATE_SOFTSETUP;
1088 if (card->lan_online)
1089 netif_carrier_on(card->dev);
1090 else
1091 netif_carrier_off(card->dev);
1092
1093 qeth_set_allowed_threads(card, 0xffffffff, 0);
1094 if (recover_flag == CARD_STATE_RECOVER) {
1095 if (recovery_mode &&
1096 card->info.type != QETH_CARD_TYPE_OSN) {
1097 __qeth_l2_open(card->dev);
1098 } else {
1099 rtnl_lock();
1100 dev_open(card->dev);
1101 rtnl_unlock();
1102 }
1103 /* this also sets saved unicast addresses */
1104 qeth_l2_set_rx_mode(card->dev);
1105 rtnl_lock();
1106 qeth_recover_features(card->dev);
1107 rtnl_unlock();
1108 }
1109 /* let user_space know that device is online */
1110 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1111 mutex_unlock(&card->conf_mutex);
1112 mutex_unlock(&card->discipline_mutex);
1113 return 0;
1114
1115 out_remove:
1116 qeth_l2_stop_card(card, 0);
1117 ccw_device_set_offline(CARD_DDEV(card));
1118 ccw_device_set_offline(CARD_WDEV(card));
1119 ccw_device_set_offline(CARD_RDEV(card));
1120 qdio_free(CARD_DDEV(card));
1121 if (recover_flag == CARD_STATE_RECOVER)
1122 card->state = CARD_STATE_RECOVER;
1123 else
1124 card->state = CARD_STATE_DOWN;
1125 mutex_unlock(&card->conf_mutex);
1126 mutex_unlock(&card->discipline_mutex);
1127 return rc;
1128 }
1129
1130 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1131 {
1132 return __qeth_l2_set_online(gdev, 0);
1133 }
1134
1135 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1136 int recovery_mode)
1137 {
1138 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1139 int rc = 0, rc2 = 0, rc3 = 0;
1140 enum qeth_card_states recover_flag;
1141
1142 mutex_lock(&card->discipline_mutex);
1143 mutex_lock(&card->conf_mutex);
1144 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1145 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1146
1147 if (card->dev && netif_carrier_ok(card->dev))
1148 netif_carrier_off(card->dev);
1149 recover_flag = card->state;
1150 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1151 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1152 card->info.hwtrap = 1;
1153 }
1154 qeth_l2_stop_card(card, recovery_mode);
1155 rc = ccw_device_set_offline(CARD_DDEV(card));
1156 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1157 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1158 if (!rc)
1159 rc = (rc2) ? rc2 : rc3;
1160 if (rc)
1161 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1162 qdio_free(CARD_DDEV(card));
1163 if (recover_flag == CARD_STATE_UP)
1164 card->state = CARD_STATE_RECOVER;
1165 /* let user_space know that device is offline */
1166 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1167 mutex_unlock(&card->conf_mutex);
1168 mutex_unlock(&card->discipline_mutex);
1169 return 0;
1170 }
1171
1172 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1173 {
1174 return __qeth_l2_set_offline(cgdev, 0);
1175 }
1176
1177 static int qeth_l2_recover(void *ptr)
1178 {
1179 struct qeth_card *card;
1180 int rc = 0;
1181
1182 card = (struct qeth_card *) ptr;
1183 QETH_CARD_TEXT(card, 2, "recover1");
1184 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1185 return 0;
1186 QETH_CARD_TEXT(card, 2, "recover2");
1187 dev_warn(&card->gdev->dev,
1188 "A recovery process has been started for the device\n");
1189 qeth_set_recovery_task(card);
1190 __qeth_l2_set_offline(card->gdev, 1);
1191 rc = __qeth_l2_set_online(card->gdev, 1);
1192 if (!rc)
1193 dev_info(&card->gdev->dev,
1194 "Device successfully recovered!\n");
1195 else {
1196 qeth_close_dev(card);
1197 dev_warn(&card->gdev->dev, "The qeth device driver "
1198 "failed to recover an error on the device\n");
1199 }
1200 qeth_clear_recovery_task(card);
1201 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1202 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1203 return 0;
1204 }
1205
1206 static int __init qeth_l2_init(void)
1207 {
1208 pr_info("register layer 2 discipline\n");
1209 return 0;
1210 }
1211
1212 static void __exit qeth_l2_exit(void)
1213 {
1214 pr_info("unregister layer 2 discipline\n");
1215 }
1216
1217 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1218 {
1219 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1220
1221 if (card->dev)
1222 netif_device_detach(card->dev);
1223 qeth_set_allowed_threads(card, 0, 1);
1224 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1225 if (gdev->state == CCWGROUP_OFFLINE)
1226 return 0;
1227 if (card->state == CARD_STATE_UP) {
1228 if (card->info.hwtrap)
1229 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1230 __qeth_l2_set_offline(card->gdev, 1);
1231 } else
1232 __qeth_l2_set_offline(card->gdev, 0);
1233 return 0;
1234 }
1235
1236 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1237 {
1238 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1239 int rc = 0;
1240
1241 if (gdev->state == CCWGROUP_OFFLINE)
1242 goto out;
1243
1244 if (card->state == CARD_STATE_RECOVER) {
1245 rc = __qeth_l2_set_online(card->gdev, 1);
1246 if (rc) {
1247 rtnl_lock();
1248 dev_close(card->dev);
1249 rtnl_unlock();
1250 }
1251 } else
1252 rc = __qeth_l2_set_online(card->gdev, 0);
1253 out:
1254 qeth_set_allowed_threads(card, 0xffffffff, 0);
1255 if (card->dev)
1256 netif_device_attach(card->dev);
1257 if (rc)
1258 dev_warn(&card->gdev->dev, "The qeth device driver "
1259 "failed to recover an error on the device\n");
1260 return rc;
1261 }
1262
1263 /* Returns zero if the command is successfully "consumed" */
1264 static int qeth_l2_control_event(struct qeth_card *card,
1265 struct qeth_ipa_cmd *cmd)
1266 {
1267 switch (cmd->hdr.command) {
1268 case IPA_CMD_SETBRIDGEPORT_OSA:
1269 case IPA_CMD_SETBRIDGEPORT_IQD:
1270 if (cmd->data.sbp.hdr.command_code ==
1271 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1272 qeth_bridge_state_change(card, cmd);
1273 return 0;
1274 } else
1275 return 1;
1276 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1277 qeth_bridge_host_event(card, cmd);
1278 return 0;
1279 default:
1280 return 1;
1281 }
1282 }
1283
1284 struct qeth_discipline qeth_l2_discipline = {
1285 .devtype = &qeth_l2_devtype,
1286 .start_poll = qeth_qdio_start_poll,
1287 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1288 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1289 .process_rx_buffer = qeth_l2_process_inbound_buffer,
1290 .recover = qeth_l2_recover,
1291 .setup = qeth_l2_probe_device,
1292 .remove = qeth_l2_remove_device,
1293 .set_online = qeth_l2_set_online,
1294 .set_offline = qeth_l2_set_offline,
1295 .freeze = qeth_l2_pm_suspend,
1296 .thaw = qeth_l2_pm_resume,
1297 .restore = qeth_l2_pm_resume,
1298 .do_ioctl = NULL,
1299 .control_event_handler = qeth_l2_control_event,
1300 };
1301 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1302
1303 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1304 struct qeth_cmd_buffer *iob)
1305 {
1306 unsigned long flags;
1307 int rc = 0;
1308
1309 QETH_CARD_TEXT(card, 5, "osndctrd");
1310
1311 wait_event(card->wait_q,
1312 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1313 qeth_prepare_control_data(card, len, iob);
1314 QETH_CARD_TEXT(card, 6, "osnoirqp");
1315 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1316 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1317 (addr_t) iob, 0, 0);
1318 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1319 if (rc) {
1320 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1321 "ccw_device_start rc = %i\n", rc);
1322 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1323 qeth_release_buffer(iob->channel, iob);
1324 atomic_set(&card->write.irq_pending, 0);
1325 wake_up(&card->wait_q);
1326 }
1327 return rc;
1328 }
1329
1330 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1331 struct qeth_cmd_buffer *iob, int data_len)
1332 {
1333 u16 s1, s2;
1334
1335 QETH_CARD_TEXT(card, 4, "osndipa");
1336
1337 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1338 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1339 s2 = (u16)data_len;
1340 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1341 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1342 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1343 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1344 return qeth_osn_send_control_data(card, s1, iob);
1345 }
1346
1347 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1348 {
1349 struct qeth_cmd_buffer *iob;
1350 struct qeth_card *card;
1351 int rc;
1352
1353 if (!dev)
1354 return -ENODEV;
1355 card = dev->ml_priv;
1356 if (!card)
1357 return -ENODEV;
1358 QETH_CARD_TEXT(card, 2, "osnsdmc");
1359 if (!qeth_card_hw_is_reachable(card))
1360 return -ENODEV;
1361 iob = qeth_wait_for_buffer(&card->write);
1362 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1363 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1364 return rc;
1365 }
1366 EXPORT_SYMBOL(qeth_osn_assist);
1367
1368 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1369 int (*assist_cb)(struct net_device *, void *),
1370 int (*data_cb)(struct sk_buff *))
1371 {
1372 struct qeth_card *card;
1373
1374 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1375 if (*dev == NULL)
1376 return -ENODEV;
1377 card = (*dev)->ml_priv;
1378 if (!card)
1379 return -ENODEV;
1380 QETH_CARD_TEXT(card, 2, "osnreg");
1381 if ((assist_cb == NULL) || (data_cb == NULL))
1382 return -EINVAL;
1383 card->osn_info.assist_cb = assist_cb;
1384 card->osn_info.data_cb = data_cb;
1385 return 0;
1386 }
1387 EXPORT_SYMBOL(qeth_osn_register);
1388
1389 void qeth_osn_deregister(struct net_device *dev)
1390 {
1391 struct qeth_card *card;
1392
1393 if (!dev)
1394 return;
1395 card = dev->ml_priv;
1396 if (!card)
1397 return;
1398 QETH_CARD_TEXT(card, 2, "osndereg");
1399 card->osn_info.assist_cb = NULL;
1400 card->osn_info.data_cb = NULL;
1401 return;
1402 }
1403 EXPORT_SYMBOL(qeth_osn_deregister);
1404
1405 /* SETBRIDGEPORT support, async notifications */
1406
1407 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1408
1409 /**
1410 * qeth_bridge_emit_host_event() - bridgeport address change notification
1411 * @card: qeth_card structure pointer, for udev events.
1412 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1413 * and reset token and addr_lnid are unused and may be NULL.
1414 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1415 * object, 0 - addition of an object.
1416 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1417 * @token: "network token" structure identifying physical address of the port.
1418 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1419 *
1420 * This function is called when registrations and deregistrations are
1421 * reported by the hardware, and also when notifications are enabled -
1422 * for all currently registered addresses.
1423 */
1424 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1425 enum qeth_an_event_type evtype,
1426 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1427 {
1428 char str[7][32];
1429 char *env[8];
1430 int i = 0;
1431
1432 switch (evtype) {
1433 case anev_reg_unreg:
1434 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1435 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1436 ? "deregister" : "register");
1437 env[i] = str[i]; i++;
1438 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1439 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1440 addr_lnid->lnid);
1441 env[i] = str[i]; i++;
1442 }
1443 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1444 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1445 addr_lnid->mac);
1446 env[i] = str[i]; i++;
1447 }
1448 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1449 token->cssid, token->ssid, token->devnum);
1450 env[i] = str[i]; i++;
1451 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1452 env[i] = str[i]; i++;
1453 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1454 token->chpid);
1455 env[i] = str[i]; i++;
1456 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1457 env[i] = str[i]; i++;
1458 break;
1459 case anev_abort:
1460 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1461 env[i] = str[i]; i++;
1462 break;
1463 case anev_reset:
1464 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1465 env[i] = str[i]; i++;
1466 break;
1467 }
1468 env[i] = NULL;
1469 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1470 }
1471
1472 struct qeth_bridge_state_data {
1473 struct work_struct worker;
1474 struct qeth_card *card;
1475 struct qeth_sbp_state_change qports;
1476 };
1477
1478 static void qeth_bridge_state_change_worker(struct work_struct *work)
1479 {
1480 struct qeth_bridge_state_data *data =
1481 container_of(work, struct qeth_bridge_state_data, worker);
1482 /* We are only interested in the first entry - local port */
1483 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1484 char env_locrem[32];
1485 char env_role[32];
1486 char env_state[32];
1487 char *env[] = {
1488 env_locrem,
1489 env_role,
1490 env_state,
1491 NULL
1492 };
1493
1494 /* Role should not change by itself, but if it did, */
1495 /* information from the hardware is authoritative. */
1496 mutex_lock(&data->card->conf_mutex);
1497 data->card->options.sbp.role = entry->role;
1498 mutex_unlock(&data->card->conf_mutex);
1499
1500 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1501 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1502 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1503 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1504 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1505 "<INVALID>");
1506 snprintf(env_state, sizeof(env_state), "STATE=%s",
1507 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1508 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1509 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1510 "<INVALID>");
1511 kobject_uevent_env(&data->card->gdev->dev.kobj,
1512 KOBJ_CHANGE, env);
1513 kfree(data);
1514 }
1515
1516 static void qeth_bridge_state_change(struct qeth_card *card,
1517 struct qeth_ipa_cmd *cmd)
1518 {
1519 struct qeth_sbp_state_change *qports =
1520 &cmd->data.sbp.data.state_change;
1521 struct qeth_bridge_state_data *data;
1522 int extrasize;
1523
1524 QETH_CARD_TEXT(card, 2, "brstchng");
1525 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1526 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1527 return;
1528 }
1529 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1530 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1531 GFP_ATOMIC);
1532 if (!data) {
1533 QETH_CARD_TEXT(card, 2, "BPSalloc");
1534 return;
1535 }
1536 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1537 data->card = card;
1538 memcpy(&data->qports, qports,
1539 sizeof(struct qeth_sbp_state_change) + extrasize);
1540 queue_work(qeth_wq, &data->worker);
1541 }
1542
1543 struct qeth_bridge_host_data {
1544 struct work_struct worker;
1545 struct qeth_card *card;
1546 struct qeth_ipacmd_addr_change hostevs;
1547 };
1548
1549 static void qeth_bridge_host_event_worker(struct work_struct *work)
1550 {
1551 struct qeth_bridge_host_data *data =
1552 container_of(work, struct qeth_bridge_host_data, worker);
1553 int i;
1554
1555 if (data->hostevs.lost_event_mask) {
1556 dev_info(&data->card->gdev->dev,
1557 "Address notification from the Bridge Port stopped %s (%s)\n",
1558 data->card->dev->name,
1559 (data->hostevs.lost_event_mask == 0x01)
1560 ? "Overflow"
1561 : (data->hostevs.lost_event_mask == 0x02)
1562 ? "Bridge port state change"
1563 : "Unknown reason");
1564 mutex_lock(&data->card->conf_mutex);
1565 data->card->options.sbp.hostnotification = 0;
1566 mutex_unlock(&data->card->conf_mutex);
1567 qeth_bridge_emit_host_event(data->card, anev_abort,
1568 0, NULL, NULL);
1569 } else
1570 for (i = 0; i < data->hostevs.num_entries; i++) {
1571 struct qeth_ipacmd_addr_change_entry *entry =
1572 &data->hostevs.entry[i];
1573 qeth_bridge_emit_host_event(data->card,
1574 anev_reg_unreg,
1575 entry->change_code,
1576 &entry->token, &entry->addr_lnid);
1577 }
1578 kfree(data);
1579 }
1580
1581 static void qeth_bridge_host_event(struct qeth_card *card,
1582 struct qeth_ipa_cmd *cmd)
1583 {
1584 struct qeth_ipacmd_addr_change *hostevs =
1585 &cmd->data.addrchange;
1586 struct qeth_bridge_host_data *data;
1587 int extrasize;
1588
1589 QETH_CARD_TEXT(card, 2, "brhostev");
1590 if (cmd->hdr.return_code != 0x0000) {
1591 if (cmd->hdr.return_code == 0x0010) {
1592 if (hostevs->lost_event_mask == 0x00)
1593 hostevs->lost_event_mask = 0xff;
1594 } else {
1595 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1596 cmd->hdr.return_code);
1597 return;
1598 }
1599 }
1600 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1601 hostevs->num_entries;
1602 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1603 GFP_ATOMIC);
1604 if (!data) {
1605 QETH_CARD_TEXT(card, 2, "BPHalloc");
1606 return;
1607 }
1608 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1609 data->card = card;
1610 memcpy(&data->hostevs, hostevs,
1611 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1612 queue_work(qeth_wq, &data->worker);
1613 }
1614
1615 /* SETBRIDGEPORT support; sending commands */
1616
1617 struct _qeth_sbp_cbctl {
1618 u16 ipa_rc;
1619 u16 cmd_rc;
1620 union {
1621 u32 supported;
1622 struct {
1623 enum qeth_sbp_roles *role;
1624 enum qeth_sbp_states *state;
1625 } qports;
1626 } data;
1627 };
1628
1629 /**
1630 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1631 * @card: qeth_card structure pointer, for debug messages.
1632 * @cbctl: state structure with hardware return codes.
1633 * @setcmd: IPA command code
1634 *
1635 * Returns negative errno-compatible error indication or 0 on success.
1636 */
1637 static int qeth_bridgeport_makerc(struct qeth_card *card,
1638 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1639 {
1640 int rc;
1641 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1642
1643 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1644 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1645 switch (cbctl->cmd_rc) {
1646 case 0x0000:
1647 rc = 0;
1648 break;
1649 case 0x2B04:
1650 case 0x0004:
1651 rc = -EOPNOTSUPP;
1652 break;
1653 case 0x2B0C:
1654 case 0x000C: /* Not configured as bridge Port */
1655 rc = -ENODEV; /* maybe not the best code here? */
1656 dev_err(&card->gdev->dev,
1657 "The device is not configured as a Bridge Port\n");
1658 break;
1659 case 0x2B10:
1660 case 0x0010: /* OS mismatch */
1661 rc = -EPERM;
1662 dev_err(&card->gdev->dev,
1663 "A Bridge Port is already configured by a different operating system\n");
1664 break;
1665 case 0x2B14:
1666 case 0x0014: /* Another device is Primary */
1667 switch (setcmd) {
1668 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1669 rc = -EEXIST;
1670 dev_err(&card->gdev->dev,
1671 "The LAN already has a primary Bridge Port\n");
1672 break;
1673 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1674 rc = -EBUSY;
1675 dev_err(&card->gdev->dev,
1676 "The device is already a primary Bridge Port\n");
1677 break;
1678 default:
1679 rc = -EIO;
1680 }
1681 break;
1682 case 0x2B18:
1683 case 0x0018: /* This device is currently Secondary */
1684 rc = -EBUSY;
1685 dev_err(&card->gdev->dev,
1686 "The device is already a secondary Bridge Port\n");
1687 break;
1688 case 0x2B1C:
1689 case 0x001C: /* Limit for Secondary devices reached */
1690 rc = -EEXIST;
1691 dev_err(&card->gdev->dev,
1692 "The LAN cannot have more secondary Bridge Ports\n");
1693 break;
1694 case 0x2B24:
1695 case 0x0024: /* This device is currently Primary */
1696 rc = -EBUSY;
1697 dev_err(&card->gdev->dev,
1698 "The device is already a primary Bridge Port\n");
1699 break;
1700 case 0x2B20:
1701 case 0x0020: /* Not authorized by zManager */
1702 rc = -EACCES;
1703 dev_err(&card->gdev->dev,
1704 "The device is not authorized to be a Bridge Port\n");
1705 break;
1706 default:
1707 rc = -EIO;
1708 }
1709 else
1710 switch (cbctl->ipa_rc) {
1711 case IPA_RC_NOTSUPP:
1712 rc = -EOPNOTSUPP;
1713 break;
1714 case IPA_RC_UNSUPPORTED_COMMAND:
1715 rc = -EOPNOTSUPP;
1716 break;
1717 default:
1718 rc = -EIO;
1719 }
1720
1721 if (rc) {
1722 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1723 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1724 }
1725 return rc;
1726 }
1727
1728 static inline int ipa_cmd_sbp(struct qeth_card *card)
1729 {
1730 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1731 IPA_CMD_SETBRIDGEPORT_IQD :
1732 IPA_CMD_SETBRIDGEPORT_OSA;
1733 }
1734
1735 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1736 struct qeth_reply *reply, unsigned long data)
1737 {
1738 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1739 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1740 QETH_CARD_TEXT(card, 2, "brqsupcb");
1741 cbctl->ipa_rc = cmd->hdr.return_code;
1742 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1743 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1744 cbctl->data.supported =
1745 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1746 } else {
1747 cbctl->data.supported = 0;
1748 }
1749 return 0;
1750 }
1751
1752 /**
1753 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1754 * @card: qeth_card structure pointer.
1755 *
1756 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1757 * strucutre: card->options.sbp.supported_funcs.
1758 */
1759 static void qeth_bridgeport_query_support(struct qeth_card *card)
1760 {
1761 struct qeth_cmd_buffer *iob;
1762 struct qeth_ipa_cmd *cmd;
1763 struct _qeth_sbp_cbctl cbctl;
1764
1765 QETH_CARD_TEXT(card, 2, "brqsuppo");
1766 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1767 if (!iob)
1768 return;
1769 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1770 cmd->data.sbp.hdr.cmdlength =
1771 sizeof(struct qeth_ipacmd_sbp_hdr) +
1772 sizeof(struct qeth_sbp_query_cmds_supp);
1773 cmd->data.sbp.hdr.command_code =
1774 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1775 cmd->data.sbp.hdr.used_total = 1;
1776 cmd->data.sbp.hdr.seq_no = 1;
1777 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1778 (void *)&cbctl) ||
1779 qeth_bridgeport_makerc(card, &cbctl,
1780 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1781 /* non-zero makerc signifies failure, and produce messages */
1782 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1783 return;
1784 }
1785 card->options.sbp.supported_funcs = cbctl.data.supported;
1786 }
1787
1788 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1789 struct qeth_reply *reply, unsigned long data)
1790 {
1791 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1792 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1793 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1794
1795 QETH_CARD_TEXT(card, 2, "brqprtcb");
1796 cbctl->ipa_rc = cmd->hdr.return_code;
1797 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1798 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1799 return 0;
1800 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1801 cbctl->cmd_rc = 0xffff;
1802 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1803 return 0;
1804 }
1805 /* first entry contains the state of the local port */
1806 if (qports->num_entries > 0) {
1807 if (cbctl->data.qports.role)
1808 *cbctl->data.qports.role = qports->entry[0].role;
1809 if (cbctl->data.qports.state)
1810 *cbctl->data.qports.state = qports->entry[0].state;
1811 }
1812 return 0;
1813 }
1814
1815 /**
1816 * qeth_bridgeport_query_ports() - query local bridgeport status.
1817 * @card: qeth_card structure pointer.
1818 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1819 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1820 *
1821 * Returns negative errno-compatible error indication or 0 on success.
1822 *
1823 * 'role' and 'state' are not updated in case of hardware operation failure.
1824 */
1825 int qeth_bridgeport_query_ports(struct qeth_card *card,
1826 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1827 {
1828 int rc = 0;
1829 struct qeth_cmd_buffer *iob;
1830 struct qeth_ipa_cmd *cmd;
1831 struct _qeth_sbp_cbctl cbctl = {
1832 .data = {
1833 .qports = {
1834 .role = role,
1835 .state = state,
1836 },
1837 },
1838 };
1839
1840 QETH_CARD_TEXT(card, 2, "brqports");
1841 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1842 return -EOPNOTSUPP;
1843 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1844 if (!iob)
1845 return -ENOMEM;
1846 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1847 cmd->data.sbp.hdr.cmdlength =
1848 sizeof(struct qeth_ipacmd_sbp_hdr);
1849 cmd->data.sbp.hdr.command_code =
1850 IPA_SBP_QUERY_BRIDGE_PORTS;
1851 cmd->data.sbp.hdr.used_total = 1;
1852 cmd->data.sbp.hdr.seq_no = 1;
1853 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1854 (void *)&cbctl);
1855 if (rc < 0)
1856 return rc;
1857 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1858 }
1859 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1860
1861 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1862 struct qeth_reply *reply, unsigned long data)
1863 {
1864 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1865 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1866 QETH_CARD_TEXT(card, 2, "brsetrcb");
1867 cbctl->ipa_rc = cmd->hdr.return_code;
1868 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1869 return 0;
1870 }
1871
1872 /**
1873 * qeth_bridgeport_setrole() - Assign primary role to the port.
1874 * @card: qeth_card structure pointer.
1875 * @role: Role to assign.
1876 *
1877 * Returns negative errno-compatible error indication or 0 on success.
1878 */
1879 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1880 {
1881 int rc = 0;
1882 int cmdlength;
1883 struct qeth_cmd_buffer *iob;
1884 struct qeth_ipa_cmd *cmd;
1885 struct _qeth_sbp_cbctl cbctl;
1886 enum qeth_ipa_sbp_cmd setcmd;
1887
1888 QETH_CARD_TEXT(card, 2, "brsetrol");
1889 switch (role) {
1890 case QETH_SBP_ROLE_NONE:
1891 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1892 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1893 sizeof(struct qeth_sbp_reset_role);
1894 break;
1895 case QETH_SBP_ROLE_PRIMARY:
1896 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1897 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1898 sizeof(struct qeth_sbp_set_primary);
1899 break;
1900 case QETH_SBP_ROLE_SECONDARY:
1901 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1902 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1903 sizeof(struct qeth_sbp_set_secondary);
1904 break;
1905 default:
1906 return -EINVAL;
1907 }
1908 if (!(card->options.sbp.supported_funcs & setcmd))
1909 return -EOPNOTSUPP;
1910 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1911 if (!iob)
1912 return -ENOMEM;
1913 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1914 cmd->data.sbp.hdr.cmdlength = cmdlength;
1915 cmd->data.sbp.hdr.command_code = setcmd;
1916 cmd->data.sbp.hdr.used_total = 1;
1917 cmd->data.sbp.hdr.seq_no = 1;
1918 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1919 (void *)&cbctl);
1920 if (rc < 0)
1921 return rc;
1922 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
1923 }
1924
1925 /**
1926 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1927 * @card: qeth_card structure pointer, for debug messages.
1928 *
1929 * Returns negative errno-compatible error indication or 0 on success.
1930 */
1931 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1932 {
1933 int rc;
1934
1935 if (pnso_rc == 0)
1936 switch (response) {
1937 case 0x0001:
1938 rc = 0;
1939 break;
1940 case 0x0004:
1941 case 0x0100:
1942 case 0x0106:
1943 rc = -EOPNOTSUPP;
1944 dev_err(&card->gdev->dev,
1945 "Setting address notification failed\n");
1946 break;
1947 case 0x0107:
1948 rc = -EAGAIN;
1949 break;
1950 default:
1951 rc = -EIO;
1952 }
1953 else
1954 rc = -EIO;
1955
1956 if (rc) {
1957 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1958 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1959 }
1960 return rc;
1961 }
1962
1963 static void qeth_bridgeport_an_set_cb(void *priv,
1964 enum qdio_brinfo_entry_type type, void *entry)
1965 {
1966 struct qeth_card *card = (struct qeth_card *)priv;
1967 struct qdio_brinfo_entry_l2 *l2entry;
1968 u8 code;
1969
1970 if (type != l2_addr_lnid) {
1971 WARN_ON_ONCE(1);
1972 return;
1973 }
1974
1975 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1976 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1977 if (l2entry->addr_lnid.lnid)
1978 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1979 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1980 (struct net_if_token *)&l2entry->nit,
1981 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1982 }
1983
1984 /**
1985 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1986 * @card: qeth_card structure pointer.
1987 * @enable: 0 - disable, non-zero - enable notifications
1988 *
1989 * Returns negative errno-compatible error indication or 0 on success.
1990 *
1991 * On enable, emits a series of address notifications udev events for all
1992 * currently registered hosts.
1993 */
1994 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1995 {
1996 int rc;
1997 u16 response;
1998 struct ccw_device *ddev;
1999 struct subchannel_id schid;
2000
2001 if (!card)
2002 return -EINVAL;
2003 if (!card->options.sbp.supported_funcs)
2004 return -EOPNOTSUPP;
2005 ddev = CARD_DDEV(card);
2006 ccw_device_get_schid(ddev, &schid);
2007
2008 if (enable) {
2009 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2010 rc = qdio_pnso_brinfo(schid, 1, &response,
2011 qeth_bridgeport_an_set_cb, card);
2012 } else
2013 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2014 return qeth_anset_makerc(card, rc, response);
2015 }
2016 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2017
2018 module_init(qeth_l2_init);
2019 module_exit(qeth_l2_exit);
2020 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2021 MODULE_DESCRIPTION("qeth layer 2 discipline");
2022 MODULE_LICENSE("GPL");
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