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[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 int qeth_l2_probe_device(struct ccwgroup_device *gdev)
884 {
885 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
886
887 qeth_l2_create_device_attributes(&gdev->dev);
888 INIT_LIST_HEAD(&card->vid_list);
889 hash_init(card->mac_htable);
890 card->options.layer2 = 1;
891 card->info.hwtrap = 0;
892 return 0;
893 }
894
895 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
896 {
897 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
898
899 qeth_l2_remove_device_attributes(&cgdev->dev);
900 qeth_set_allowed_threads(card, 0, 1);
901 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
902
903 if (cgdev->state == CCWGROUP_ONLINE)
904 qeth_l2_set_offline(cgdev);
905
906 if (card->dev) {
907 netif_napi_del(&card->napi);
908 unregister_netdev(card->dev);
909 card->dev = NULL;
910 }
911 return;
912 }
913
914 static const struct ethtool_ops qeth_l2_ethtool_ops = {
915 .get_link = ethtool_op_get_link,
916 .get_strings = qeth_core_get_strings,
917 .get_ethtool_stats = qeth_core_get_ethtool_stats,
918 .get_sset_count = qeth_core_get_sset_count,
919 .get_drvinfo = qeth_core_get_drvinfo,
920 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
921 };
922
923 static const struct ethtool_ops qeth_l2_osn_ops = {
924 .get_strings = qeth_core_get_strings,
925 .get_ethtool_stats = qeth_core_get_ethtool_stats,
926 .get_sset_count = qeth_core_get_sset_count,
927 .get_drvinfo = qeth_core_get_drvinfo,
928 };
929
930 static const struct net_device_ops qeth_l2_netdev_ops = {
931 .ndo_open = qeth_l2_open,
932 .ndo_stop = qeth_l2_stop,
933 .ndo_get_stats = qeth_get_stats,
934 .ndo_start_xmit = qeth_l2_hard_start_xmit,
935 .ndo_validate_addr = eth_validate_addr,
936 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
937 .ndo_do_ioctl = qeth_do_ioctl,
938 .ndo_set_mac_address = qeth_l2_set_mac_address,
939 .ndo_change_mtu = qeth_change_mtu,
940 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
941 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
942 .ndo_tx_timeout = qeth_tx_timeout,
943 .ndo_fix_features = qeth_fix_features,
944 .ndo_set_features = qeth_set_features
945 };
946
947 static int qeth_l2_setup_netdev(struct qeth_card *card)
948 {
949 switch (card->info.type) {
950 case QETH_CARD_TYPE_IQD:
951 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
952 ether_setup);
953 break;
954 case QETH_CARD_TYPE_OSN:
955 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
956 ether_setup);
957 card->dev->flags |= IFF_NOARP;
958 break;
959 default:
960 card->dev = alloc_etherdev(0);
961 }
962
963 if (!card->dev)
964 return -ENODEV;
965
966 card->dev->ml_priv = card;
967 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
968 card->dev->mtu = card->info.initial_mtu;
969 card->dev->min_mtu = 64;
970 card->dev->max_mtu = ETH_MAX_MTU;
971 card->dev->netdev_ops = &qeth_l2_netdev_ops;
972 card->dev->ethtool_ops =
973 (card->info.type != QETH_CARD_TYPE_OSN) ?
974 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
975 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
976 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
977 card->dev->hw_features = NETIF_F_SG;
978 card->dev->vlan_features = NETIF_F_SG;
979 /* OSA 3S and earlier has no RX/TX support */
980 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
981 card->dev->hw_features |= NETIF_F_IP_CSUM;
982 card->dev->vlan_features |= NETIF_F_IP_CSUM;
983 }
984 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
985 card->dev->hw_features |= NETIF_F_RXCSUM;
986 card->dev->vlan_features |= NETIF_F_RXCSUM;
987 }
988 }
989 card->info.broadcast_capable = 1;
990 qeth_l2_request_initial_mac(card);
991 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
992 PAGE_SIZE;
993 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
994 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
995 netif_carrier_off(card->dev);
996 return register_netdev(card->dev);
997 }
998
999 static int qeth_l2_start_ipassists(struct qeth_card *card)
1000 {
1001 /* configure isolation level */
1002 if (qeth_set_access_ctrl_online(card, 0))
1003 return -ENODEV;
1004 return 0;
1005 }
1006
1007 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1008 {
1009 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1010 int rc = 0;
1011 enum qeth_card_states recover_flag;
1012
1013 mutex_lock(&card->discipline_mutex);
1014 mutex_lock(&card->conf_mutex);
1015 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1016 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1017
1018 recover_flag = card->state;
1019 rc = qeth_core_hardsetup_card(card);
1020 if (rc) {
1021 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1022 rc = -ENODEV;
1023 goto out_remove;
1024 }
1025 qeth_bridgeport_query_support(card);
1026 if (card->options.sbp.supported_funcs)
1027 dev_info(&card->gdev->dev,
1028 "The device represents a Bridge Capable Port\n");
1029 qeth_trace_features(card);
1030
1031 if (!card->dev && qeth_l2_setup_netdev(card)) {
1032 rc = -ENODEV;
1033 goto out_remove;
1034 }
1035
1036 if (card->info.type != QETH_CARD_TYPE_OSN)
1037 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1038
1039 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1040 if (card->info.hwtrap &&
1041 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1042 card->info.hwtrap = 0;
1043 } else
1044 card->info.hwtrap = 0;
1045
1046 qeth_l2_setup_bridgeport_attrs(card);
1047
1048 card->state = CARD_STATE_HARDSETUP;
1049 memset(&card->rx, 0, sizeof(struct qeth_rx));
1050 qeth_print_status_message(card);
1051
1052 /* softsetup */
1053 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1054
1055 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1056 (card->info.type == QETH_CARD_TYPE_OSX)) {
1057 rc = qeth_l2_start_ipassists(card);
1058 if (rc)
1059 goto out_remove;
1060 }
1061
1062 if (card->info.type != QETH_CARD_TYPE_OSN &&
1063 card->info.type != QETH_CARD_TYPE_OSM)
1064 qeth_l2_process_vlans(card);
1065
1066 netif_tx_disable(card->dev);
1067
1068 rc = qeth_init_qdio_queues(card);
1069 if (rc) {
1070 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1071 rc = -ENODEV;
1072 goto out_remove;
1073 }
1074 card->state = CARD_STATE_SOFTSETUP;
1075 if (card->lan_online)
1076 netif_carrier_on(card->dev);
1077 else
1078 netif_carrier_off(card->dev);
1079
1080 qeth_set_allowed_threads(card, 0xffffffff, 0);
1081 if (recover_flag == CARD_STATE_RECOVER) {
1082 if (recovery_mode &&
1083 card->info.type != QETH_CARD_TYPE_OSN) {
1084 __qeth_l2_open(card->dev);
1085 } else {
1086 rtnl_lock();
1087 dev_open(card->dev);
1088 rtnl_unlock();
1089 }
1090 /* this also sets saved unicast addresses */
1091 qeth_l2_set_rx_mode(card->dev);
1092 rtnl_lock();
1093 qeth_recover_features(card->dev);
1094 rtnl_unlock();
1095 }
1096 /* let user_space know that device is online */
1097 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1098 mutex_unlock(&card->conf_mutex);
1099 mutex_unlock(&card->discipline_mutex);
1100 return 0;
1101
1102 out_remove:
1103 qeth_l2_stop_card(card, 0);
1104 ccw_device_set_offline(CARD_DDEV(card));
1105 ccw_device_set_offline(CARD_WDEV(card));
1106 ccw_device_set_offline(CARD_RDEV(card));
1107 qdio_free(CARD_DDEV(card));
1108 if (recover_flag == CARD_STATE_RECOVER)
1109 card->state = CARD_STATE_RECOVER;
1110 else
1111 card->state = CARD_STATE_DOWN;
1112 mutex_unlock(&card->conf_mutex);
1113 mutex_unlock(&card->discipline_mutex);
1114 return rc;
1115 }
1116
1117 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1118 {
1119 return __qeth_l2_set_online(gdev, 0);
1120 }
1121
1122 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1123 int recovery_mode)
1124 {
1125 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1126 int rc = 0, rc2 = 0, rc3 = 0;
1127 enum qeth_card_states recover_flag;
1128
1129 mutex_lock(&card->discipline_mutex);
1130 mutex_lock(&card->conf_mutex);
1131 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1132 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1133
1134 if (card->dev && netif_carrier_ok(card->dev))
1135 netif_carrier_off(card->dev);
1136 recover_flag = card->state;
1137 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1138 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1139 card->info.hwtrap = 1;
1140 }
1141 qeth_l2_stop_card(card, recovery_mode);
1142 rc = ccw_device_set_offline(CARD_DDEV(card));
1143 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1144 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1145 if (!rc)
1146 rc = (rc2) ? rc2 : rc3;
1147 if (rc)
1148 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1149 qdio_free(CARD_DDEV(card));
1150 if (recover_flag == CARD_STATE_UP)
1151 card->state = CARD_STATE_RECOVER;
1152 /* let user_space know that device is offline */
1153 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1154 mutex_unlock(&card->conf_mutex);
1155 mutex_unlock(&card->discipline_mutex);
1156 return 0;
1157 }
1158
1159 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1160 {
1161 return __qeth_l2_set_offline(cgdev, 0);
1162 }
1163
1164 static int qeth_l2_recover(void *ptr)
1165 {
1166 struct qeth_card *card;
1167 int rc = 0;
1168
1169 card = (struct qeth_card *) ptr;
1170 QETH_CARD_TEXT(card, 2, "recover1");
1171 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1172 return 0;
1173 QETH_CARD_TEXT(card, 2, "recover2");
1174 dev_warn(&card->gdev->dev,
1175 "A recovery process has been started for the device\n");
1176 qeth_set_recovery_task(card);
1177 __qeth_l2_set_offline(card->gdev, 1);
1178 rc = __qeth_l2_set_online(card->gdev, 1);
1179 if (!rc)
1180 dev_info(&card->gdev->dev,
1181 "Device successfully recovered!\n");
1182 else {
1183 qeth_close_dev(card);
1184 dev_warn(&card->gdev->dev, "The qeth device driver "
1185 "failed to recover an error on the device\n");
1186 }
1187 qeth_clear_recovery_task(card);
1188 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1189 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1190 return 0;
1191 }
1192
1193 static int __init qeth_l2_init(void)
1194 {
1195 pr_info("register layer 2 discipline\n");
1196 return 0;
1197 }
1198
1199 static void __exit qeth_l2_exit(void)
1200 {
1201 pr_info("unregister layer 2 discipline\n");
1202 }
1203
1204 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1205 {
1206 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1207
1208 if (card->dev)
1209 netif_device_detach(card->dev);
1210 qeth_set_allowed_threads(card, 0, 1);
1211 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1212 if (gdev->state == CCWGROUP_OFFLINE)
1213 return 0;
1214 if (card->state == CARD_STATE_UP) {
1215 if (card->info.hwtrap)
1216 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1217 __qeth_l2_set_offline(card->gdev, 1);
1218 } else
1219 __qeth_l2_set_offline(card->gdev, 0);
1220 return 0;
1221 }
1222
1223 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1224 {
1225 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1226 int rc = 0;
1227
1228 if (gdev->state == CCWGROUP_OFFLINE)
1229 goto out;
1230
1231 if (card->state == CARD_STATE_RECOVER) {
1232 rc = __qeth_l2_set_online(card->gdev, 1);
1233 if (rc) {
1234 rtnl_lock();
1235 dev_close(card->dev);
1236 rtnl_unlock();
1237 }
1238 } else
1239 rc = __qeth_l2_set_online(card->gdev, 0);
1240 out:
1241 qeth_set_allowed_threads(card, 0xffffffff, 0);
1242 if (card->dev)
1243 netif_device_attach(card->dev);
1244 if (rc)
1245 dev_warn(&card->gdev->dev, "The qeth device driver "
1246 "failed to recover an error on the device\n");
1247 return rc;
1248 }
1249
1250 /* Returns zero if the command is successfully "consumed" */
1251 static int qeth_l2_control_event(struct qeth_card *card,
1252 struct qeth_ipa_cmd *cmd)
1253 {
1254 switch (cmd->hdr.command) {
1255 case IPA_CMD_SETBRIDGEPORT_OSA:
1256 case IPA_CMD_SETBRIDGEPORT_IQD:
1257 if (cmd->data.sbp.hdr.command_code ==
1258 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1259 qeth_bridge_state_change(card, cmd);
1260 return 0;
1261 } else
1262 return 1;
1263 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1264 qeth_bridge_host_event(card, cmd);
1265 return 0;
1266 default:
1267 return 1;
1268 }
1269 }
1270
1271 struct qeth_discipline qeth_l2_discipline = {
1272 .start_poll = qeth_qdio_start_poll,
1273 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1274 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1275 .process_rx_buffer = qeth_l2_process_inbound_buffer,
1276 .recover = qeth_l2_recover,
1277 .setup = qeth_l2_probe_device,
1278 .remove = qeth_l2_remove_device,
1279 .set_online = qeth_l2_set_online,
1280 .set_offline = qeth_l2_set_offline,
1281 .freeze = qeth_l2_pm_suspend,
1282 .thaw = qeth_l2_pm_resume,
1283 .restore = qeth_l2_pm_resume,
1284 .do_ioctl = NULL,
1285 .control_event_handler = qeth_l2_control_event,
1286 };
1287 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1288
1289 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1290 struct qeth_cmd_buffer *iob)
1291 {
1292 unsigned long flags;
1293 int rc = 0;
1294
1295 QETH_CARD_TEXT(card, 5, "osndctrd");
1296
1297 wait_event(card->wait_q,
1298 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1299 qeth_prepare_control_data(card, len, iob);
1300 QETH_CARD_TEXT(card, 6, "osnoirqp");
1301 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1302 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1303 (addr_t) iob, 0, 0);
1304 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1305 if (rc) {
1306 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1307 "ccw_device_start rc = %i\n", rc);
1308 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1309 qeth_release_buffer(iob->channel, iob);
1310 atomic_set(&card->write.irq_pending, 0);
1311 wake_up(&card->wait_q);
1312 }
1313 return rc;
1314 }
1315
1316 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1317 struct qeth_cmd_buffer *iob, int data_len)
1318 {
1319 u16 s1, s2;
1320
1321 QETH_CARD_TEXT(card, 4, "osndipa");
1322
1323 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1324 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1325 s2 = (u16)data_len;
1326 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1327 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1328 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1329 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1330 return qeth_osn_send_control_data(card, s1, iob);
1331 }
1332
1333 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1334 {
1335 struct qeth_cmd_buffer *iob;
1336 struct qeth_card *card;
1337 int rc;
1338
1339 if (!dev)
1340 return -ENODEV;
1341 card = dev->ml_priv;
1342 if (!card)
1343 return -ENODEV;
1344 QETH_CARD_TEXT(card, 2, "osnsdmc");
1345 if (!qeth_card_hw_is_reachable(card))
1346 return -ENODEV;
1347 iob = qeth_wait_for_buffer(&card->write);
1348 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1349 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1350 return rc;
1351 }
1352 EXPORT_SYMBOL(qeth_osn_assist);
1353
1354 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1355 int (*assist_cb)(struct net_device *, void *),
1356 int (*data_cb)(struct sk_buff *))
1357 {
1358 struct qeth_card *card;
1359
1360 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1361 if (*dev == NULL)
1362 return -ENODEV;
1363 card = (*dev)->ml_priv;
1364 if (!card)
1365 return -ENODEV;
1366 QETH_CARD_TEXT(card, 2, "osnreg");
1367 if ((assist_cb == NULL) || (data_cb == NULL))
1368 return -EINVAL;
1369 card->osn_info.assist_cb = assist_cb;
1370 card->osn_info.data_cb = data_cb;
1371 return 0;
1372 }
1373 EXPORT_SYMBOL(qeth_osn_register);
1374
1375 void qeth_osn_deregister(struct net_device *dev)
1376 {
1377 struct qeth_card *card;
1378
1379 if (!dev)
1380 return;
1381 card = dev->ml_priv;
1382 if (!card)
1383 return;
1384 QETH_CARD_TEXT(card, 2, "osndereg");
1385 card->osn_info.assist_cb = NULL;
1386 card->osn_info.data_cb = NULL;
1387 return;
1388 }
1389 EXPORT_SYMBOL(qeth_osn_deregister);
1390
1391 /* SETBRIDGEPORT support, async notifications */
1392
1393 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1394
1395 /**
1396 * qeth_bridge_emit_host_event() - bridgeport address change notification
1397 * @card: qeth_card structure pointer, for udev events.
1398 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1399 * and reset token and addr_lnid are unused and may be NULL.
1400 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1401 * object, 0 - addition of an object.
1402 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1403 * @token: "network token" structure identifying physical address of the port.
1404 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1405 *
1406 * This function is called when registrations and deregistrations are
1407 * reported by the hardware, and also when notifications are enabled -
1408 * for all currently registered addresses.
1409 */
1410 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1411 enum qeth_an_event_type evtype,
1412 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1413 {
1414 char str[7][32];
1415 char *env[8];
1416 int i = 0;
1417
1418 switch (evtype) {
1419 case anev_reg_unreg:
1420 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1421 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1422 ? "deregister" : "register");
1423 env[i] = str[i]; i++;
1424 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1425 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1426 addr_lnid->lnid);
1427 env[i] = str[i]; i++;
1428 }
1429 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1430 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1431 addr_lnid->mac);
1432 env[i] = str[i]; i++;
1433 }
1434 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1435 token->cssid, token->ssid, token->devnum);
1436 env[i] = str[i]; i++;
1437 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1438 env[i] = str[i]; i++;
1439 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1440 token->chpid);
1441 env[i] = str[i]; i++;
1442 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1443 env[i] = str[i]; i++;
1444 break;
1445 case anev_abort:
1446 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1447 env[i] = str[i]; i++;
1448 break;
1449 case anev_reset:
1450 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1451 env[i] = str[i]; i++;
1452 break;
1453 }
1454 env[i] = NULL;
1455 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1456 }
1457
1458 struct qeth_bridge_state_data {
1459 struct work_struct worker;
1460 struct qeth_card *card;
1461 struct qeth_sbp_state_change qports;
1462 };
1463
1464 static void qeth_bridge_state_change_worker(struct work_struct *work)
1465 {
1466 struct qeth_bridge_state_data *data =
1467 container_of(work, struct qeth_bridge_state_data, worker);
1468 /* We are only interested in the first entry - local port */
1469 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1470 char env_locrem[32];
1471 char env_role[32];
1472 char env_state[32];
1473 char *env[] = {
1474 env_locrem,
1475 env_role,
1476 env_state,
1477 NULL
1478 };
1479
1480 /* Role should not change by itself, but if it did, */
1481 /* information from the hardware is authoritative. */
1482 mutex_lock(&data->card->conf_mutex);
1483 data->card->options.sbp.role = entry->role;
1484 mutex_unlock(&data->card->conf_mutex);
1485
1486 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1487 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1488 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1489 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1490 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1491 "<INVALID>");
1492 snprintf(env_state, sizeof(env_state), "STATE=%s",
1493 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1494 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1495 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1496 "<INVALID>");
1497 kobject_uevent_env(&data->card->gdev->dev.kobj,
1498 KOBJ_CHANGE, env);
1499 kfree(data);
1500 }
1501
1502 static void qeth_bridge_state_change(struct qeth_card *card,
1503 struct qeth_ipa_cmd *cmd)
1504 {
1505 struct qeth_sbp_state_change *qports =
1506 &cmd->data.sbp.data.state_change;
1507 struct qeth_bridge_state_data *data;
1508 int extrasize;
1509
1510 QETH_CARD_TEXT(card, 2, "brstchng");
1511 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1512 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1513 return;
1514 }
1515 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1516 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1517 GFP_ATOMIC);
1518 if (!data) {
1519 QETH_CARD_TEXT(card, 2, "BPSalloc");
1520 return;
1521 }
1522 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1523 data->card = card;
1524 memcpy(&data->qports, qports,
1525 sizeof(struct qeth_sbp_state_change) + extrasize);
1526 queue_work(qeth_wq, &data->worker);
1527 }
1528
1529 struct qeth_bridge_host_data {
1530 struct work_struct worker;
1531 struct qeth_card *card;
1532 struct qeth_ipacmd_addr_change hostevs;
1533 };
1534
1535 static void qeth_bridge_host_event_worker(struct work_struct *work)
1536 {
1537 struct qeth_bridge_host_data *data =
1538 container_of(work, struct qeth_bridge_host_data, worker);
1539 int i;
1540
1541 if (data->hostevs.lost_event_mask) {
1542 dev_info(&data->card->gdev->dev,
1543 "Address notification from the Bridge Port stopped %s (%s)\n",
1544 data->card->dev->name,
1545 (data->hostevs.lost_event_mask == 0x01)
1546 ? "Overflow"
1547 : (data->hostevs.lost_event_mask == 0x02)
1548 ? "Bridge port state change"
1549 : "Unknown reason");
1550 mutex_lock(&data->card->conf_mutex);
1551 data->card->options.sbp.hostnotification = 0;
1552 mutex_unlock(&data->card->conf_mutex);
1553 qeth_bridge_emit_host_event(data->card, anev_abort,
1554 0, NULL, NULL);
1555 } else
1556 for (i = 0; i < data->hostevs.num_entries; i++) {
1557 struct qeth_ipacmd_addr_change_entry *entry =
1558 &data->hostevs.entry[i];
1559 qeth_bridge_emit_host_event(data->card,
1560 anev_reg_unreg,
1561 entry->change_code,
1562 &entry->token, &entry->addr_lnid);
1563 }
1564 kfree(data);
1565 }
1566
1567 static void qeth_bridge_host_event(struct qeth_card *card,
1568 struct qeth_ipa_cmd *cmd)
1569 {
1570 struct qeth_ipacmd_addr_change *hostevs =
1571 &cmd->data.addrchange;
1572 struct qeth_bridge_host_data *data;
1573 int extrasize;
1574
1575 QETH_CARD_TEXT(card, 2, "brhostev");
1576 if (cmd->hdr.return_code != 0x0000) {
1577 if (cmd->hdr.return_code == 0x0010) {
1578 if (hostevs->lost_event_mask == 0x00)
1579 hostevs->lost_event_mask = 0xff;
1580 } else {
1581 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1582 cmd->hdr.return_code);
1583 return;
1584 }
1585 }
1586 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1587 hostevs->num_entries;
1588 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1589 GFP_ATOMIC);
1590 if (!data) {
1591 QETH_CARD_TEXT(card, 2, "BPHalloc");
1592 return;
1593 }
1594 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1595 data->card = card;
1596 memcpy(&data->hostevs, hostevs,
1597 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1598 queue_work(qeth_wq, &data->worker);
1599 }
1600
1601 /* SETBRIDGEPORT support; sending commands */
1602
1603 struct _qeth_sbp_cbctl {
1604 u16 ipa_rc;
1605 u16 cmd_rc;
1606 union {
1607 u32 supported;
1608 struct {
1609 enum qeth_sbp_roles *role;
1610 enum qeth_sbp_states *state;
1611 } qports;
1612 } data;
1613 };
1614
1615 /**
1616 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1617 * @card: qeth_card structure pointer, for debug messages.
1618 * @cbctl: state structure with hardware return codes.
1619 * @setcmd: IPA command code
1620 *
1621 * Returns negative errno-compatible error indication or 0 on success.
1622 */
1623 static int qeth_bridgeport_makerc(struct qeth_card *card,
1624 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1625 {
1626 int rc;
1627 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1628
1629 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1630 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1631 switch (cbctl->cmd_rc) {
1632 case 0x0000:
1633 rc = 0;
1634 break;
1635 case 0x2B04:
1636 case 0x0004:
1637 rc = -EOPNOTSUPP;
1638 break;
1639 case 0x2B0C:
1640 case 0x000C: /* Not configured as bridge Port */
1641 rc = -ENODEV; /* maybe not the best code here? */
1642 dev_err(&card->gdev->dev,
1643 "The device is not configured as a Bridge Port\n");
1644 break;
1645 case 0x2B10:
1646 case 0x0010: /* OS mismatch */
1647 rc = -EPERM;
1648 dev_err(&card->gdev->dev,
1649 "A Bridge Port is already configured by a different operating system\n");
1650 break;
1651 case 0x2B14:
1652 case 0x0014: /* Another device is Primary */
1653 switch (setcmd) {
1654 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1655 rc = -EEXIST;
1656 dev_err(&card->gdev->dev,
1657 "The LAN already has a primary Bridge Port\n");
1658 break;
1659 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1660 rc = -EBUSY;
1661 dev_err(&card->gdev->dev,
1662 "The device is already a primary Bridge Port\n");
1663 break;
1664 default:
1665 rc = -EIO;
1666 }
1667 break;
1668 case 0x2B18:
1669 case 0x0018: /* This device is currently Secondary */
1670 rc = -EBUSY;
1671 dev_err(&card->gdev->dev,
1672 "The device is already a secondary Bridge Port\n");
1673 break;
1674 case 0x2B1C:
1675 case 0x001C: /* Limit for Secondary devices reached */
1676 rc = -EEXIST;
1677 dev_err(&card->gdev->dev,
1678 "The LAN cannot have more secondary Bridge Ports\n");
1679 break;
1680 case 0x2B24:
1681 case 0x0024: /* This device is currently Primary */
1682 rc = -EBUSY;
1683 dev_err(&card->gdev->dev,
1684 "The device is already a primary Bridge Port\n");
1685 break;
1686 case 0x2B20:
1687 case 0x0020: /* Not authorized by zManager */
1688 rc = -EACCES;
1689 dev_err(&card->gdev->dev,
1690 "The device is not authorized to be a Bridge Port\n");
1691 break;
1692 default:
1693 rc = -EIO;
1694 }
1695 else
1696 switch (cbctl->ipa_rc) {
1697 case IPA_RC_NOTSUPP:
1698 rc = -EOPNOTSUPP;
1699 break;
1700 case IPA_RC_UNSUPPORTED_COMMAND:
1701 rc = -EOPNOTSUPP;
1702 break;
1703 default:
1704 rc = -EIO;
1705 }
1706
1707 if (rc) {
1708 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1709 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1710 }
1711 return rc;
1712 }
1713
1714 static inline int ipa_cmd_sbp(struct qeth_card *card)
1715 {
1716 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1717 IPA_CMD_SETBRIDGEPORT_IQD :
1718 IPA_CMD_SETBRIDGEPORT_OSA;
1719 }
1720
1721 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1722 struct qeth_reply *reply, unsigned long data)
1723 {
1724 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1725 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1726 QETH_CARD_TEXT(card, 2, "brqsupcb");
1727 cbctl->ipa_rc = cmd->hdr.return_code;
1728 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1729 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1730 cbctl->data.supported =
1731 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1732 } else {
1733 cbctl->data.supported = 0;
1734 }
1735 return 0;
1736 }
1737
1738 /**
1739 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1740 * @card: qeth_card structure pointer.
1741 *
1742 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1743 * strucutre: card->options.sbp.supported_funcs.
1744 */
1745 static void qeth_bridgeport_query_support(struct qeth_card *card)
1746 {
1747 struct qeth_cmd_buffer *iob;
1748 struct qeth_ipa_cmd *cmd;
1749 struct _qeth_sbp_cbctl cbctl;
1750
1751 QETH_CARD_TEXT(card, 2, "brqsuppo");
1752 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1753 if (!iob)
1754 return;
1755 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1756 cmd->data.sbp.hdr.cmdlength =
1757 sizeof(struct qeth_ipacmd_sbp_hdr) +
1758 sizeof(struct qeth_sbp_query_cmds_supp);
1759 cmd->data.sbp.hdr.command_code =
1760 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1761 cmd->data.sbp.hdr.used_total = 1;
1762 cmd->data.sbp.hdr.seq_no = 1;
1763 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1764 (void *)&cbctl) ||
1765 qeth_bridgeport_makerc(card, &cbctl,
1766 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1767 /* non-zero makerc signifies failure, and produce messages */
1768 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1769 return;
1770 }
1771 card->options.sbp.supported_funcs = cbctl.data.supported;
1772 }
1773
1774 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1775 struct qeth_reply *reply, unsigned long data)
1776 {
1777 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1778 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1779 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1780
1781 QETH_CARD_TEXT(card, 2, "brqprtcb");
1782 cbctl->ipa_rc = cmd->hdr.return_code;
1783 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1784 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1785 return 0;
1786 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1787 cbctl->cmd_rc = 0xffff;
1788 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1789 return 0;
1790 }
1791 /* first entry contains the state of the local port */
1792 if (qports->num_entries > 0) {
1793 if (cbctl->data.qports.role)
1794 *cbctl->data.qports.role = qports->entry[0].role;
1795 if (cbctl->data.qports.state)
1796 *cbctl->data.qports.state = qports->entry[0].state;
1797 }
1798 return 0;
1799 }
1800
1801 /**
1802 * qeth_bridgeport_query_ports() - query local bridgeport status.
1803 * @card: qeth_card structure pointer.
1804 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1805 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1806 *
1807 * Returns negative errno-compatible error indication or 0 on success.
1808 *
1809 * 'role' and 'state' are not updated in case of hardware operation failure.
1810 */
1811 int qeth_bridgeport_query_ports(struct qeth_card *card,
1812 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1813 {
1814 int rc = 0;
1815 struct qeth_cmd_buffer *iob;
1816 struct qeth_ipa_cmd *cmd;
1817 struct _qeth_sbp_cbctl cbctl = {
1818 .data = {
1819 .qports = {
1820 .role = role,
1821 .state = state,
1822 },
1823 },
1824 };
1825
1826 QETH_CARD_TEXT(card, 2, "brqports");
1827 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1828 return -EOPNOTSUPP;
1829 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1830 if (!iob)
1831 return -ENOMEM;
1832 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1833 cmd->data.sbp.hdr.cmdlength =
1834 sizeof(struct qeth_ipacmd_sbp_hdr);
1835 cmd->data.sbp.hdr.command_code =
1836 IPA_SBP_QUERY_BRIDGE_PORTS;
1837 cmd->data.sbp.hdr.used_total = 1;
1838 cmd->data.sbp.hdr.seq_no = 1;
1839 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1840 (void *)&cbctl);
1841 if (rc < 0)
1842 return rc;
1843 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1844 }
1845 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1846
1847 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1848 struct qeth_reply *reply, unsigned long data)
1849 {
1850 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1851 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1852 QETH_CARD_TEXT(card, 2, "brsetrcb");
1853 cbctl->ipa_rc = cmd->hdr.return_code;
1854 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1855 return 0;
1856 }
1857
1858 /**
1859 * qeth_bridgeport_setrole() - Assign primary role to the port.
1860 * @card: qeth_card structure pointer.
1861 * @role: Role to assign.
1862 *
1863 * Returns negative errno-compatible error indication or 0 on success.
1864 */
1865 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1866 {
1867 int rc = 0;
1868 int cmdlength;
1869 struct qeth_cmd_buffer *iob;
1870 struct qeth_ipa_cmd *cmd;
1871 struct _qeth_sbp_cbctl cbctl;
1872 enum qeth_ipa_sbp_cmd setcmd;
1873
1874 QETH_CARD_TEXT(card, 2, "brsetrol");
1875 switch (role) {
1876 case QETH_SBP_ROLE_NONE:
1877 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1878 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1879 sizeof(struct qeth_sbp_reset_role);
1880 break;
1881 case QETH_SBP_ROLE_PRIMARY:
1882 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1883 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1884 sizeof(struct qeth_sbp_set_primary);
1885 break;
1886 case QETH_SBP_ROLE_SECONDARY:
1887 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1888 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1889 sizeof(struct qeth_sbp_set_secondary);
1890 break;
1891 default:
1892 return -EINVAL;
1893 }
1894 if (!(card->options.sbp.supported_funcs & setcmd))
1895 return -EOPNOTSUPP;
1896 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1897 if (!iob)
1898 return -ENOMEM;
1899 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1900 cmd->data.sbp.hdr.cmdlength = cmdlength;
1901 cmd->data.sbp.hdr.command_code = setcmd;
1902 cmd->data.sbp.hdr.used_total = 1;
1903 cmd->data.sbp.hdr.seq_no = 1;
1904 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1905 (void *)&cbctl);
1906 if (rc < 0)
1907 return rc;
1908 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
1909 }
1910
1911 /**
1912 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1913 * @card: qeth_card structure pointer, for debug messages.
1914 *
1915 * Returns negative errno-compatible error indication or 0 on success.
1916 */
1917 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1918 {
1919 int rc;
1920
1921 if (pnso_rc == 0)
1922 switch (response) {
1923 case 0x0001:
1924 rc = 0;
1925 break;
1926 case 0x0004:
1927 case 0x0100:
1928 case 0x0106:
1929 rc = -EOPNOTSUPP;
1930 dev_err(&card->gdev->dev,
1931 "Setting address notification failed\n");
1932 break;
1933 case 0x0107:
1934 rc = -EAGAIN;
1935 break;
1936 default:
1937 rc = -EIO;
1938 }
1939 else
1940 rc = -EIO;
1941
1942 if (rc) {
1943 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1944 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1945 }
1946 return rc;
1947 }
1948
1949 static void qeth_bridgeport_an_set_cb(void *priv,
1950 enum qdio_brinfo_entry_type type, void *entry)
1951 {
1952 struct qeth_card *card = (struct qeth_card *)priv;
1953 struct qdio_brinfo_entry_l2 *l2entry;
1954 u8 code;
1955
1956 if (type != l2_addr_lnid) {
1957 WARN_ON_ONCE(1);
1958 return;
1959 }
1960
1961 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1962 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1963 if (l2entry->addr_lnid.lnid)
1964 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1965 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1966 (struct net_if_token *)&l2entry->nit,
1967 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1968 }
1969
1970 /**
1971 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1972 * @card: qeth_card structure pointer.
1973 * @enable: 0 - disable, non-zero - enable notifications
1974 *
1975 * Returns negative errno-compatible error indication or 0 on success.
1976 *
1977 * On enable, emits a series of address notifications udev events for all
1978 * currently registered hosts.
1979 */
1980 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1981 {
1982 int rc;
1983 u16 response;
1984 struct ccw_device *ddev;
1985 struct subchannel_id schid;
1986
1987 if (!card)
1988 return -EINVAL;
1989 if (!card->options.sbp.supported_funcs)
1990 return -EOPNOTSUPP;
1991 ddev = CARD_DDEV(card);
1992 ccw_device_get_schid(ddev, &schid);
1993
1994 if (enable) {
1995 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1996 rc = qdio_pnso_brinfo(schid, 1, &response,
1997 qeth_bridgeport_an_set_cb, card);
1998 } else
1999 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2000 return qeth_anset_makerc(card, rc, response);
2001 }
2002 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2003
2004 module_init(qeth_l2_init);
2005 module_exit(qeth_l2_exit);
2006 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2007 MODULE_DESCRIPTION("qeth layer 2 discipline");
2008 MODULE_LICENSE("GPL");
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