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[mirror_ubuntu-jammy-kernel.git] / drivers / s390 / net / qeth_l2_main.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright IBM Corp. 2007, 2009
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13 #include <linux/module.h>
14 #include <linux/moduleparam.h>
15 #include <linux/string.h>
16 #include <linux/errno.h>
17 #include <linux/kernel.h>
18 #include <linux/slab.h>
19 #include <linux/etherdevice.h>
20 #include <linux/if_bridge.h>
21 #include <linux/list.h>
22 #include <linux/hash.h>
23 #include <linux/hashtable.h>
24 #include <net/switchdev.h>
25 #include <asm/chsc.h>
26 #include <asm/css_chars.h>
27 #include <asm/setup.h>
28 #include "qeth_core.h"
29 #include "qeth_l2.h"
30
31 static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode)
32 {
33 int rc;
34
35 if (retcode)
36 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
37 switch (retcode) {
38 case IPA_RC_SUCCESS:
39 rc = 0;
40 break;
41 case IPA_RC_L2_UNSUPPORTED_CMD:
42 rc = -EOPNOTSUPP;
43 break;
44 case IPA_RC_L2_ADDR_TABLE_FULL:
45 rc = -ENOSPC;
46 break;
47 case IPA_RC_L2_DUP_MAC:
48 case IPA_RC_L2_DUP_LAYER3_MAC:
49 rc = -EADDRINUSE;
50 break;
51 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
52 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
53 rc = -EADDRNOTAVAIL;
54 break;
55 case IPA_RC_L2_MAC_NOT_FOUND:
56 rc = -ENOENT;
57 break;
58 default:
59 rc = -EIO;
60 break;
61 }
62 return rc;
63 }
64
65 static int qeth_l2_send_setdelmac_cb(struct qeth_card *card,
66 struct qeth_reply *reply,
67 unsigned long data)
68 {
69 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
70
71 return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code);
72 }
73
74 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
75 enum qeth_ipa_cmds ipacmd)
76 {
77 struct qeth_ipa_cmd *cmd;
78 struct qeth_cmd_buffer *iob;
79
80 QETH_CARD_TEXT(card, 2, "L2sdmac");
81 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
82 IPA_DATA_SIZEOF(setdelmac));
83 if (!iob)
84 return -ENOMEM;
85 cmd = __ipa_cmd(iob);
86 cmd->data.setdelmac.mac_length = ETH_ALEN;
87 ether_addr_copy(cmd->data.setdelmac.mac, mac);
88 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelmac_cb, NULL);
89 }
90
91 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
92 {
93 int rc;
94
95 QETH_CARD_TEXT(card, 2, "L2Setmac");
96 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
97 if (rc == 0) {
98 dev_info(&card->gdev->dev,
99 "MAC address %pM successfully registered\n", mac);
100 } else {
101 switch (rc) {
102 case -EADDRINUSE:
103 dev_warn(&card->gdev->dev,
104 "MAC address %pM already exists\n", mac);
105 break;
106 case -EADDRNOTAVAIL:
107 dev_warn(&card->gdev->dev,
108 "MAC address %pM is not authorized\n", mac);
109 break;
110 }
111 }
112 return rc;
113 }
114
115 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
116 {
117 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
118 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
119 int rc;
120
121 QETH_CARD_TEXT(card, 2, "L2Wmac");
122 rc = qeth_l2_send_setdelmac(card, mac, cmd);
123 if (rc == -EADDRINUSE)
124 QETH_DBF_MESSAGE(2, "MAC already registered on device %x\n",
125 CARD_DEVID(card));
126 else if (rc)
127 QETH_DBF_MESSAGE(2, "Failed to register MAC on device %x: %d\n",
128 CARD_DEVID(card), rc);
129 return rc;
130 }
131
132 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
133 {
134 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
135 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
136 int rc;
137
138 QETH_CARD_TEXT(card, 2, "L2Rmac");
139 rc = qeth_l2_send_setdelmac(card, mac, cmd);
140 if (rc)
141 QETH_DBF_MESSAGE(2, "Failed to delete MAC on device %u: %d\n",
142 CARD_DEVID(card), rc);
143 return rc;
144 }
145
146 static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card)
147 {
148 struct qeth_mac *mac;
149 struct hlist_node *tmp;
150 int i;
151
152 hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) {
153 hash_del(&mac->hnode);
154 kfree(mac);
155 }
156 }
157
158 static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue,
159 struct qeth_hdr *hdr, struct sk_buff *skb,
160 __be16 proto, unsigned int data_len)
161 {
162 int cast_type = qeth_get_ether_cast_type(skb);
163 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
164
165 hdr->hdr.l2.pkt_length = data_len;
166
167 if (skb_is_gso(skb)) {
168 hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO;
169 } else {
170 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
171 if (skb->ip_summed == CHECKSUM_PARTIAL)
172 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], proto);
173 }
174
175 /* set byte byte 3 to casting flags */
176 if (cast_type == RTN_MULTICAST)
177 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
178 else if (cast_type == RTN_BROADCAST)
179 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
180 else
181 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
182
183 /* VSWITCH relies on the VLAN
184 * information to be present in
185 * the QDIO header */
186 if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
187 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
188 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
189 }
190 }
191
192 static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode)
193 {
194 if (retcode)
195 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
196
197 switch (retcode) {
198 case IPA_RC_SUCCESS:
199 return 0;
200 case IPA_RC_L2_INVALID_VLAN_ID:
201 return -EINVAL;
202 case IPA_RC_L2_DUP_VLAN_ID:
203 return -EEXIST;
204 case IPA_RC_L2_VLAN_ID_NOT_FOUND:
205 return -ENOENT;
206 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
207 return -EPERM;
208 default:
209 return -EIO;
210 }
211 }
212
213 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
214 struct qeth_reply *reply,
215 unsigned long data)
216 {
217 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
218
219 QETH_CARD_TEXT(card, 2, "L2sdvcb");
220 if (cmd->hdr.return_code) {
221 QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n",
222 cmd->data.setdelvlan.vlan_id,
223 CARD_DEVID(card), cmd->hdr.return_code);
224 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
225 }
226 return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code);
227 }
228
229 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
230 enum qeth_ipa_cmds ipacmd)
231 {
232 struct qeth_ipa_cmd *cmd;
233 struct qeth_cmd_buffer *iob;
234
235 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
236 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
237 IPA_DATA_SIZEOF(setdelvlan));
238 if (!iob)
239 return -ENOMEM;
240 cmd = __ipa_cmd(iob);
241 cmd->data.setdelvlan.vlan_id = i;
242 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelvlan_cb, NULL);
243 }
244
245 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
246 __be16 proto, u16 vid)
247 {
248 struct qeth_card *card = dev->ml_priv;
249
250 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
251 if (!vid)
252 return 0;
253
254 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
255 }
256
257 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
258 __be16 proto, u16 vid)
259 {
260 struct qeth_card *card = dev->ml_priv;
261
262 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
263 if (!vid)
264 return 0;
265
266 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
267 }
268
269 static void qeth_l2_set_pnso_mode(struct qeth_card *card,
270 enum qeth_pnso_mode mode)
271 {
272 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
273 WRITE_ONCE(card->info.pnso_mode, mode);
274 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
275
276 if (mode == QETH_PNSO_NONE)
277 drain_workqueue(card->event_wq);
278 }
279
280 static void qeth_l2_dev2br_fdb_flush(struct qeth_card *card)
281 {
282 struct switchdev_notifier_fdb_info info = {};
283
284 QETH_CARD_TEXT(card, 2, "fdbflush");
285
286 info.addr = NULL;
287 /* flush all VLANs: */
288 info.vid = 0;
289 info.added_by_user = false;
290 info.offloaded = true;
291
292 call_switchdev_notifiers(SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
293 card->dev, &info.info, NULL);
294 }
295
296 static int qeth_l2_request_initial_mac(struct qeth_card *card)
297 {
298 int rc = 0;
299
300 QETH_CARD_TEXT(card, 2, "l2reqmac");
301
302 if (MACHINE_IS_VM) {
303 rc = qeth_vm_request_mac(card);
304 if (!rc)
305 goto out;
306 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n",
307 CARD_DEVID(card), rc);
308 QETH_CARD_TEXT_(card, 2, "err%04x", rc);
309 /* fall back to alternative mechanism: */
310 }
311
312 rc = qeth_setadpparms_change_macaddr(card);
313 if (!rc)
314 goto out;
315 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n",
316 CARD_DEVID(card), rc);
317 QETH_CARD_TEXT_(card, 2, "1err%04x", rc);
318
319 /* Fall back once more, but some devices don't support a custom MAC
320 * address:
321 */
322 if (IS_OSM(card) || IS_OSX(card))
323 return (rc) ? rc : -EADDRNOTAVAIL;
324 eth_hw_addr_random(card->dev);
325
326 out:
327 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len);
328 return 0;
329 }
330
331 static void qeth_l2_register_dev_addr(struct qeth_card *card)
332 {
333 if (!is_valid_ether_addr(card->dev->dev_addr))
334 qeth_l2_request_initial_mac(card);
335
336 if (!qeth_l2_send_setmac(card, card->dev->dev_addr))
337 card->info.dev_addr_is_registered = 1;
338 else
339 card->info.dev_addr_is_registered = 0;
340 }
341
342 static int qeth_l2_validate_addr(struct net_device *dev)
343 {
344 struct qeth_card *card = dev->ml_priv;
345
346 if (card->info.dev_addr_is_registered)
347 return eth_validate_addr(dev);
348
349 QETH_CARD_TEXT(card, 4, "nomacadr");
350 return -EPERM;
351 }
352
353 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
354 {
355 struct sockaddr *addr = p;
356 struct qeth_card *card = dev->ml_priv;
357 u8 old_addr[ETH_ALEN];
358 int rc = 0;
359
360 QETH_CARD_TEXT(card, 3, "setmac");
361
362 if (IS_OSM(card) || IS_OSX(card)) {
363 QETH_CARD_TEXT(card, 3, "setmcTYP");
364 return -EOPNOTSUPP;
365 }
366 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN);
367 if (!is_valid_ether_addr(addr->sa_data))
368 return -EADDRNOTAVAIL;
369
370 /* don't register the same address twice */
371 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) &&
372 card->info.dev_addr_is_registered)
373 return 0;
374
375 /* add the new address, switch over, drop the old */
376 rc = qeth_l2_send_setmac(card, addr->sa_data);
377 if (rc)
378 return rc;
379 ether_addr_copy(old_addr, dev->dev_addr);
380 ether_addr_copy(dev->dev_addr, addr->sa_data);
381
382 if (card->info.dev_addr_is_registered)
383 qeth_l2_remove_mac(card, old_addr);
384 card->info.dev_addr_is_registered = 1;
385 return 0;
386 }
387
388 static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable)
389 {
390 int role;
391 int rc;
392
393 QETH_CARD_TEXT(card, 3, "pmisc2br");
394
395 if (enable) {
396 if (card->options.sbp.reflect_promisc_primary)
397 role = QETH_SBP_ROLE_PRIMARY;
398 else
399 role = QETH_SBP_ROLE_SECONDARY;
400 } else
401 role = QETH_SBP_ROLE_NONE;
402
403 rc = qeth_bridgeport_setrole(card, role);
404 QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc);
405 if (!rc) {
406 card->options.sbp.role = role;
407 card->info.promisc_mode = enable;
408 }
409 }
410
411 static void qeth_l2_set_promisc_mode(struct qeth_card *card)
412 {
413 bool enable = card->dev->flags & IFF_PROMISC;
414
415 if (card->info.promisc_mode == enable)
416 return;
417
418 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) {
419 qeth_setadp_promisc_mode(card, enable);
420 } else {
421 mutex_lock(&card->sbp_lock);
422 if (card->options.sbp.reflect_promisc)
423 qeth_l2_promisc_to_bridge(card, enable);
424 mutex_unlock(&card->sbp_lock);
425 }
426 }
427
428 /* New MAC address is added to the hash table and marked to be written on card
429 * only if there is not in the hash table storage already
430 *
431 */
432 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha)
433 {
434 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
435 struct qeth_mac *mac;
436
437 hash_for_each_possible(card->rx_mode_addrs, mac, hnode, mac_hash) {
438 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) {
439 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
440 return;
441 }
442 }
443
444 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
445 if (!mac)
446 return;
447
448 ether_addr_copy(mac->mac_addr, ha->addr);
449 mac->disp_flag = QETH_DISP_ADDR_ADD;
450
451 hash_add(card->rx_mode_addrs, &mac->hnode, mac_hash);
452 }
453
454 static void qeth_l2_rx_mode_work(struct work_struct *work)
455 {
456 struct qeth_card *card = container_of(work, struct qeth_card,
457 rx_mode_work);
458 struct net_device *dev = card->dev;
459 struct netdev_hw_addr *ha;
460 struct qeth_mac *mac;
461 struct hlist_node *tmp;
462 int i;
463 int rc;
464
465 QETH_CARD_TEXT(card, 3, "setmulti");
466
467 netif_addr_lock_bh(dev);
468 netdev_for_each_mc_addr(ha, dev)
469 qeth_l2_add_mac(card, ha);
470 netdev_for_each_uc_addr(ha, dev)
471 qeth_l2_add_mac(card, ha);
472 netif_addr_unlock_bh(dev);
473
474 hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) {
475 switch (mac->disp_flag) {
476 case QETH_DISP_ADDR_DELETE:
477 qeth_l2_remove_mac(card, mac->mac_addr);
478 hash_del(&mac->hnode);
479 kfree(mac);
480 break;
481 case QETH_DISP_ADDR_ADD:
482 rc = qeth_l2_write_mac(card, mac->mac_addr);
483 if (rc) {
484 hash_del(&mac->hnode);
485 kfree(mac);
486 break;
487 }
488 fallthrough;
489 default:
490 /* for next call to set_rx_mode(): */
491 mac->disp_flag = QETH_DISP_ADDR_DELETE;
492 }
493 }
494
495 qeth_l2_set_promisc_mode(card);
496 }
497
498 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
499 struct net_device *dev)
500 {
501 struct qeth_card *card = dev->ml_priv;
502 u16 txq = skb_get_queue_mapping(skb);
503 struct qeth_qdio_out_q *queue;
504 int rc;
505
506 if (!skb_is_gso(skb))
507 qdisc_skb_cb(skb)->pkt_len = skb->len;
508 if (IS_IQD(card))
509 txq = qeth_iqd_translate_txq(dev, txq);
510 queue = card->qdio.out_qs[txq];
511
512 rc = qeth_xmit(card, skb, queue, vlan_get_protocol(skb),
513 qeth_l2_fill_header);
514 if (!rc)
515 return NETDEV_TX_OK;
516
517 QETH_TXQ_STAT_INC(queue, tx_dropped);
518 kfree_skb(skb);
519 return NETDEV_TX_OK;
520 }
521
522 static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb,
523 struct net_device *sb_dev)
524 {
525 struct qeth_card *card = dev->ml_priv;
526
527 if (IS_IQD(card))
528 return qeth_iqd_select_queue(dev, skb,
529 qeth_get_ether_cast_type(skb),
530 sb_dev);
531 if (qeth_uses_tx_prio_queueing(card))
532 return qeth_get_priority_queue(card, skb);
533
534 return netdev_pick_tx(dev, skb, sb_dev);
535 }
536
537 static void qeth_l2_set_rx_mode(struct net_device *dev)
538 {
539 struct qeth_card *card = dev->ml_priv;
540
541 schedule_work(&card->rx_mode_work);
542 }
543
544 /**
545 * qeth_l2_pnso() - perform network subchannel operation
546 * @card: qeth_card structure pointer
547 * @oc: Operation Code
548 * @cnc: Boolean Change-Notification Control
549 * @cb: Callback function will be executed for each element
550 * of the address list
551 * @priv: Pointer to pass to the callback function.
552 *
553 * Collects network information in a network address list and calls the
554 * callback function for every entry in the list. If "change-notification-
555 * control" is set, further changes in the address list will be reported
556 * via the IPA command.
557 */
558 static int qeth_l2_pnso(struct qeth_card *card, u8 oc, int cnc,
559 void (*cb)(void *priv, struct chsc_pnso_naid_l2 *entry),
560 void *priv)
561 {
562 struct ccw_device *ddev = CARD_DDEV(card);
563 struct chsc_pnso_area *rr;
564 u32 prev_instance = 0;
565 int isfirstblock = 1;
566 int i, size, elems;
567 int rc;
568
569 rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL);
570 if (rr == NULL)
571 return -ENOMEM;
572 do {
573 QETH_CARD_TEXT(card, 2, "PNSO");
574 /* on the first iteration, naihdr.resume_token will be zero */
575 rc = ccw_device_pnso(ddev, rr, oc, rr->naihdr.resume_token,
576 cnc);
577 if (rc)
578 continue;
579 if (cb == NULL)
580 continue;
581
582 size = rr->naihdr.naids;
583 if (size != sizeof(struct chsc_pnso_naid_l2)) {
584 WARN_ON_ONCE(1);
585 continue;
586 }
587
588 elems = (rr->response.length - sizeof(struct chsc_header) -
589 sizeof(struct chsc_pnso_naihdr)) / size;
590
591 if (!isfirstblock && (rr->naihdr.instance != prev_instance)) {
592 /* Inform the caller that they need to scrap */
593 /* the data that was already reported via cb */
594 rc = -EAGAIN;
595 break;
596 }
597 isfirstblock = 0;
598 prev_instance = rr->naihdr.instance;
599 for (i = 0; i < elems; i++)
600 (*cb)(priv, &rr->entries[i]);
601 } while ((rc == -EBUSY) || (!rc && /* list stored */
602 /* resume token is non-zero => list incomplete */
603 (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2)));
604
605 if (rc)
606 QETH_CARD_TEXT_(card, 2, "PNrp%04x", rr->response.code);
607
608 free_page((unsigned long)rr);
609 return rc;
610 }
611
612 static bool qeth_is_my_net_if_token(struct qeth_card *card,
613 struct net_if_token *token)
614 {
615 return ((card->info.ddev_devno == token->devnum) &&
616 (card->info.cssid == token->cssid) &&
617 (card->info.iid == token->iid) &&
618 (card->info.ssid == token->ssid) &&
619 (card->info.chpid == token->chpid) &&
620 (card->info.chid == token->chid));
621 }
622
623 /**
624 * qeth_l2_dev2br_fdb_notify() - update fdb of master bridge
625 * @card: qeth_card structure pointer
626 * @code: event bitmask: high order bit 0x80 set to
627 * 1 - removal of an object
628 * 0 - addition of an object
629 * Object type(s):
630 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC
631 * @token: "network token" structure identifying 'physical' location
632 * of the target
633 * @addr_lnid: structure with MAC address and VLAN ID of the target
634 */
635 static void qeth_l2_dev2br_fdb_notify(struct qeth_card *card, u8 code,
636 struct net_if_token *token,
637 struct mac_addr_lnid *addr_lnid)
638 {
639 struct switchdev_notifier_fdb_info info = {};
640 u8 ntfy_mac[ETH_ALEN];
641
642 ether_addr_copy(ntfy_mac, addr_lnid->mac);
643 /* Ignore VLAN only changes */
644 if (!(code & IPA_ADDR_CHANGE_CODE_MACADDR))
645 return;
646 /* Ignore mcast entries */
647 if (is_multicast_ether_addr(ntfy_mac))
648 return;
649 /* Ignore my own addresses */
650 if (qeth_is_my_net_if_token(card, token))
651 return;
652
653 info.addr = ntfy_mac;
654 /* don't report VLAN IDs */
655 info.vid = 0;
656 info.added_by_user = false;
657 info.offloaded = true;
658
659 if (code & IPA_ADDR_CHANGE_CODE_REMOVAL) {
660 call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE,
661 card->dev, &info.info, NULL);
662 QETH_CARD_TEXT(card, 4, "andelmac");
663 QETH_CARD_TEXT_(card, 4,
664 "mc%012llx", ether_addr_to_u64(ntfy_mac));
665 } else {
666 call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE,
667 card->dev, &info.info, NULL);
668 QETH_CARD_TEXT(card, 4, "anaddmac");
669 QETH_CARD_TEXT_(card, 4,
670 "mc%012llx", ether_addr_to_u64(ntfy_mac));
671 }
672 }
673
674 static void qeth_l2_dev2br_an_set_cb(void *priv,
675 struct chsc_pnso_naid_l2 *entry)
676 {
677 u8 code = IPA_ADDR_CHANGE_CODE_MACADDR;
678 struct qeth_card *card = priv;
679
680 if (entry->addr_lnid.lnid < VLAN_N_VID)
681 code |= IPA_ADDR_CHANGE_CODE_VLANID;
682 qeth_l2_dev2br_fdb_notify(card, code,
683 (struct net_if_token *)&entry->nit,
684 (struct mac_addr_lnid *)&entry->addr_lnid);
685 }
686
687 /**
688 * qeth_l2_dev2br_an_set() -
689 * Enable or disable 'dev to bridge network address notification'
690 * @card: qeth_card structure pointer
691 * @enable: Enable or disable 'dev to bridge network address notification'
692 *
693 * Returns negative errno-compatible error indication or 0 on success.
694 *
695 * On enable, emits a series of address notifications for all
696 * currently registered hosts.
697 */
698 static int qeth_l2_dev2br_an_set(struct qeth_card *card, bool enable)
699 {
700 int rc;
701
702 if (enable) {
703 QETH_CARD_TEXT(card, 2, "anseton");
704 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 1,
705 qeth_l2_dev2br_an_set_cb, card);
706 if (rc == -EAGAIN)
707 /* address notification enabled, but inconsistent
708 * addresses reported -> disable address notification
709 */
710 qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0,
711 NULL, NULL);
712 } else {
713 QETH_CARD_TEXT(card, 2, "ansetoff");
714 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL);
715 }
716
717 return rc;
718 }
719
720 struct qeth_l2_br2dev_event_work {
721 struct work_struct work;
722 struct net_device *br_dev;
723 struct net_device *lsync_dev;
724 struct net_device *dst_dev;
725 unsigned long event;
726 unsigned char addr[ETH_ALEN];
727 };
728
729 static const struct net_device_ops qeth_l2_netdev_ops;
730
731 static bool qeth_l2_must_learn(struct net_device *netdev,
732 struct net_device *dstdev)
733 {
734 struct qeth_priv *priv;
735
736 priv = netdev_priv(netdev);
737 return (netdev != dstdev &&
738 (priv->brport_features & BR_LEARNING_SYNC) &&
739 !(br_port_flag_is_set(netdev, BR_ISOLATED) &&
740 br_port_flag_is_set(dstdev, BR_ISOLATED)) &&
741 netdev->netdev_ops == &qeth_l2_netdev_ops);
742 }
743
744 /**
745 * qeth_l2_br2dev_worker() - update local MACs
746 * @work: bridge to device FDB update
747 *
748 * Update local MACs of a learning_sync bridgeport so it can receive
749 * messages for a destination port.
750 * In case of an isolated learning_sync port, also update its isolated
751 * siblings.
752 */
753 static void qeth_l2_br2dev_worker(struct work_struct *work)
754 {
755 struct qeth_l2_br2dev_event_work *br2dev_event_work =
756 container_of(work, struct qeth_l2_br2dev_event_work, work);
757 struct net_device *lsyncdev = br2dev_event_work->lsync_dev;
758 struct net_device *dstdev = br2dev_event_work->dst_dev;
759 struct net_device *brdev = br2dev_event_work->br_dev;
760 unsigned long event = br2dev_event_work->event;
761 unsigned char *addr = br2dev_event_work->addr;
762 struct qeth_card *card = lsyncdev->ml_priv;
763 struct net_device *lowerdev;
764 struct list_head *iter;
765 int err = 0;
766
767 kfree(br2dev_event_work);
768 QETH_CARD_TEXT_(card, 4, "b2dw%04lx", event);
769 QETH_CARD_TEXT_(card, 4, "ma%012llx", ether_addr_to_u64(addr));
770
771 rcu_read_lock();
772 /* Verify preconditions are still valid: */
773 if (!netif_is_bridge_port(lsyncdev) ||
774 brdev != netdev_master_upper_dev_get_rcu(lsyncdev))
775 goto unlock;
776 if (!qeth_l2_must_learn(lsyncdev, dstdev))
777 goto unlock;
778
779 if (br_port_flag_is_set(lsyncdev, BR_ISOLATED)) {
780 /* Update lsyncdev and its isolated sibling(s): */
781 iter = &brdev->adj_list.lower;
782 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
783 while (lowerdev) {
784 if (br_port_flag_is_set(lowerdev, BR_ISOLATED)) {
785 switch (event) {
786 case SWITCHDEV_FDB_ADD_TO_DEVICE:
787 err = dev_uc_add(lowerdev, addr);
788 break;
789 case SWITCHDEV_FDB_DEL_TO_DEVICE:
790 err = dev_uc_del(lowerdev, addr);
791 break;
792 default:
793 break;
794 }
795 if (err) {
796 QETH_CARD_TEXT(card, 2, "b2derris");
797 QETH_CARD_TEXT_(card, 2,
798 "err%02lx%03d", event,
799 lowerdev->ifindex);
800 }
801 }
802 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
803 }
804 } else {
805 switch (event) {
806 case SWITCHDEV_FDB_ADD_TO_DEVICE:
807 err = dev_uc_add(lsyncdev, addr);
808 break;
809 case SWITCHDEV_FDB_DEL_TO_DEVICE:
810 err = dev_uc_del(lsyncdev, addr);
811 break;
812 default:
813 break;
814 }
815 if (err)
816 QETH_CARD_TEXT_(card, 2, "b2derr%02lx", event);
817 }
818
819 unlock:
820 rcu_read_unlock();
821 dev_put(brdev);
822 dev_put(lsyncdev);
823 dev_put(dstdev);
824 }
825
826 static int qeth_l2_br2dev_queue_work(struct net_device *brdev,
827 struct net_device *lsyncdev,
828 struct net_device *dstdev,
829 unsigned long event,
830 const unsigned char *addr)
831 {
832 struct qeth_l2_br2dev_event_work *worker_data;
833 struct qeth_card *card;
834
835 worker_data = kzalloc(sizeof(*worker_data), GFP_ATOMIC);
836 if (!worker_data)
837 return -ENOMEM;
838 INIT_WORK(&worker_data->work, qeth_l2_br2dev_worker);
839 worker_data->br_dev = brdev;
840 worker_data->lsync_dev = lsyncdev;
841 worker_data->dst_dev = dstdev;
842 worker_data->event = event;
843 ether_addr_copy(worker_data->addr, addr);
844
845 card = lsyncdev->ml_priv;
846 /* Take a reference on the sw port devices and the bridge */
847 dev_hold(brdev);
848 dev_hold(lsyncdev);
849 dev_hold(dstdev);
850 queue_work(card->event_wq, &worker_data->work);
851 return 0;
852 }
853
854 /* Called under rtnl_lock */
855 static int qeth_l2_switchdev_event(struct notifier_block *unused,
856 unsigned long event, void *ptr)
857 {
858 struct net_device *dstdev, *brdev, *lowerdev;
859 struct switchdev_notifier_fdb_info *fdb_info;
860 struct switchdev_notifier_info *info = ptr;
861 struct list_head *iter;
862 struct qeth_card *card;
863 int rc;
864
865 if (!(event == SWITCHDEV_FDB_ADD_TO_DEVICE ||
866 event == SWITCHDEV_FDB_DEL_TO_DEVICE))
867 return NOTIFY_DONE;
868
869 dstdev = switchdev_notifier_info_to_dev(info);
870 brdev = netdev_master_upper_dev_get_rcu(dstdev);
871 if (!brdev || !netif_is_bridge_master(brdev))
872 return NOTIFY_DONE;
873 fdb_info = container_of(info,
874 struct switchdev_notifier_fdb_info,
875 info);
876 iter = &brdev->adj_list.lower;
877 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
878 while (lowerdev) {
879 if (qeth_l2_must_learn(lowerdev, dstdev)) {
880 card = lowerdev->ml_priv;
881 QETH_CARD_TEXT_(card, 4, "b2dqw%03lx", event);
882 rc = qeth_l2_br2dev_queue_work(brdev, lowerdev,
883 dstdev, event,
884 fdb_info->addr);
885 if (rc) {
886 QETH_CARD_TEXT(card, 2, "b2dqwerr");
887 return NOTIFY_BAD;
888 }
889 }
890 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
891 }
892 return NOTIFY_DONE;
893 }
894
895 static struct notifier_block qeth_l2_sw_notifier = {
896 .notifier_call = qeth_l2_switchdev_event,
897 };
898
899 static refcount_t qeth_l2_switchdev_notify_refcnt;
900
901 /* Called under rtnl_lock */
902 static void qeth_l2_br2dev_get(void)
903 {
904 int rc;
905
906 if (!refcount_inc_not_zero(&qeth_l2_switchdev_notify_refcnt)) {
907 rc = register_switchdev_notifier(&qeth_l2_sw_notifier);
908 if (rc) {
909 QETH_DBF_MESSAGE(2,
910 "failed to register qeth_l2_sw_notifier: %d\n",
911 rc);
912 } else {
913 refcount_set(&qeth_l2_switchdev_notify_refcnt, 1);
914 QETH_DBF_MESSAGE(2, "qeth_l2_sw_notifier registered\n");
915 }
916 }
917 QETH_DBF_TEXT_(SETUP, 2, "b2d+%04d",
918 qeth_l2_switchdev_notify_refcnt.refs.counter);
919 }
920
921 /* Called under rtnl_lock */
922 static void qeth_l2_br2dev_put(void)
923 {
924 int rc;
925
926 if (refcount_dec_and_test(&qeth_l2_switchdev_notify_refcnt)) {
927 rc = unregister_switchdev_notifier(&qeth_l2_sw_notifier);
928 if (rc) {
929 QETH_DBF_MESSAGE(2,
930 "failed to unregister qeth_l2_sw_notifier: %d\n",
931 rc);
932 } else {
933 QETH_DBF_MESSAGE(2,
934 "qeth_l2_sw_notifier unregistered\n");
935 }
936 }
937 QETH_DBF_TEXT_(SETUP, 2, "b2d-%04d",
938 qeth_l2_switchdev_notify_refcnt.refs.counter);
939 }
940
941 static int qeth_l2_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
942 struct net_device *dev, u32 filter_mask,
943 int nlflags)
944 {
945 struct qeth_priv *priv = netdev_priv(dev);
946 struct qeth_card *card = dev->ml_priv;
947 u16 mode = BRIDGE_MODE_UNDEF;
948
949 /* Do not even show qeth devs that cannot do bridge_setlink */
950 if (!priv->brport_hw_features || !netif_device_present(dev) ||
951 qeth_bridgeport_is_in_use(card))
952 return -EOPNOTSUPP;
953
954 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
955 mode, priv->brport_features,
956 priv->brport_hw_features,
957 nlflags, filter_mask, NULL);
958 }
959
960 static const struct nla_policy qeth_brport_policy[IFLA_BRPORT_MAX + 1] = {
961 [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 },
962 };
963
964 /**
965 * qeth_l2_bridge_setlink() - set bridgeport attributes
966 * @dev: netdevice
967 * @nlh: netlink message header
968 * @flags: bridge flags (here: BRIDGE_FLAGS_SELF)
969 * @extack: extended ACK report struct
970 *
971 * Called under rtnl_lock
972 */
973 static int qeth_l2_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
974 u16 flags, struct netlink_ext_ack *extack)
975 {
976 struct qeth_priv *priv = netdev_priv(dev);
977 struct nlattr *bp_tb[IFLA_BRPORT_MAX + 1];
978 struct qeth_card *card = dev->ml_priv;
979 struct nlattr *attr, *nested_attr;
980 bool enable, has_protinfo = false;
981 int rem1, rem2;
982 int rc;
983
984 if (!netif_device_present(dev))
985 return -ENODEV;
986
987 nlmsg_for_each_attr(attr, nlh, sizeof(struct ifinfomsg), rem1) {
988 if (nla_type(attr) == IFLA_PROTINFO) {
989 rc = nla_parse_nested(bp_tb, IFLA_BRPORT_MAX, attr,
990 qeth_brport_policy, extack);
991 if (rc)
992 return rc;
993 has_protinfo = true;
994 } else if (nla_type(attr) == IFLA_AF_SPEC) {
995 nla_for_each_nested(nested_attr, attr, rem2) {
996 if (nla_type(nested_attr) == IFLA_BRIDGE_FLAGS)
997 continue;
998 NL_SET_ERR_MSG_ATTR(extack, nested_attr,
999 "Unsupported attribute");
1000 return -EINVAL;
1001 }
1002 } else {
1003 NL_SET_ERR_MSG_ATTR(extack, attr, "Unsupported attribute");
1004 return -EINVAL;
1005 }
1006 }
1007 if (!has_protinfo)
1008 return 0;
1009 if (!bp_tb[IFLA_BRPORT_LEARNING_SYNC])
1010 return -EINVAL;
1011 if (!(priv->brport_hw_features & BR_LEARNING_SYNC)) {
1012 NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC],
1013 "Operation not supported by HW");
1014 return -EOPNOTSUPP;
1015 }
1016 if (!IS_ENABLED(CONFIG_NET_SWITCHDEV)) {
1017 NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC],
1018 "Requires NET_SWITCHDEV");
1019 return -EOPNOTSUPP;
1020 }
1021 enable = !!nla_get_u8(bp_tb[IFLA_BRPORT_LEARNING_SYNC]);
1022
1023 if (enable == !!(priv->brport_features & BR_LEARNING_SYNC))
1024 return 0;
1025
1026 mutex_lock(&card->sbp_lock);
1027 /* do not change anything if BridgePort is enabled */
1028 if (qeth_bridgeport_is_in_use(card)) {
1029 NL_SET_ERR_MSG(extack, "n/a (BridgePort)");
1030 rc = -EBUSY;
1031 } else if (enable) {
1032 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1033 rc = qeth_l2_dev2br_an_set(card, true);
1034 if (rc) {
1035 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1036 } else {
1037 priv->brport_features |= BR_LEARNING_SYNC;
1038 qeth_l2_br2dev_get();
1039 }
1040 } else {
1041 rc = qeth_l2_dev2br_an_set(card, false);
1042 if (!rc) {
1043 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1044 priv->brport_features ^= BR_LEARNING_SYNC;
1045 qeth_l2_dev2br_fdb_flush(card);
1046 qeth_l2_br2dev_put();
1047 }
1048 }
1049 mutex_unlock(&card->sbp_lock);
1050
1051 return rc;
1052 }
1053
1054 static const struct net_device_ops qeth_l2_netdev_ops = {
1055 .ndo_open = qeth_open,
1056 .ndo_stop = qeth_stop,
1057 .ndo_get_stats64 = qeth_get_stats64,
1058 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1059 .ndo_features_check = qeth_features_check,
1060 .ndo_select_queue = qeth_l2_select_queue,
1061 .ndo_validate_addr = qeth_l2_validate_addr,
1062 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1063 .ndo_eth_ioctl = qeth_do_ioctl,
1064 .ndo_siocdevprivate = qeth_siocdevprivate,
1065 .ndo_set_mac_address = qeth_l2_set_mac_address,
1066 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1067 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1068 .ndo_tx_timeout = qeth_tx_timeout,
1069 .ndo_fix_features = qeth_fix_features,
1070 .ndo_set_features = qeth_set_features,
1071 .ndo_bridge_getlink = qeth_l2_bridge_getlink,
1072 .ndo_bridge_setlink = qeth_l2_bridge_setlink,
1073 };
1074
1075 static int qeth_l2_setup_netdev(struct qeth_card *card)
1076 {
1077 card->dev->needed_headroom = sizeof(struct qeth_hdr);
1078 card->dev->netdev_ops = &qeth_l2_netdev_ops;
1079 card->dev->priv_flags |= IFF_UNICAST_FLT;
1080
1081 if (IS_OSM(card)) {
1082 card->dev->features |= NETIF_F_VLAN_CHALLENGED;
1083 } else {
1084 if (!IS_VM_NIC(card))
1085 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1086 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1087 }
1088
1089 if (IS_OSD(card) && !IS_VM_NIC(card)) {
1090 card->dev->features |= NETIF_F_SG;
1091 /* OSA 3S and earlier has no RX/TX support */
1092 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1093 card->dev->hw_features |= NETIF_F_IP_CSUM;
1094 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1095 }
1096 }
1097 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1098 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1099 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1100 }
1101 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) ||
1102 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) {
1103 card->dev->hw_features |= NETIF_F_RXCSUM;
1104 card->dev->vlan_features |= NETIF_F_RXCSUM;
1105 }
1106 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1107 card->dev->hw_features |= NETIF_F_TSO;
1108 card->dev->vlan_features |= NETIF_F_TSO;
1109 }
1110 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1111 card->dev->hw_features |= NETIF_F_TSO6;
1112 card->dev->vlan_features |= NETIF_F_TSO6;
1113 }
1114
1115 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1116 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso);
1117 netif_keep_dst(card->dev);
1118 netif_set_gso_max_size(card->dev,
1119 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1));
1120 }
1121
1122 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1123 return register_netdev(card->dev);
1124 }
1125
1126 static void qeth_l2_trace_features(struct qeth_card *card)
1127 {
1128 /* Set BridgePort features */
1129 QETH_CARD_TEXT(card, 2, "featuSBP");
1130 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
1131 sizeof(card->options.sbp.supported_funcs));
1132 /* VNIC Characteristics features */
1133 QETH_CARD_TEXT(card, 2, "feaVNICC");
1134 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
1135 sizeof(card->options.vnicc.sup_chars));
1136 }
1137
1138 static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card)
1139 {
1140 if (!card->options.sbp.reflect_promisc &&
1141 card->options.sbp.role != QETH_SBP_ROLE_NONE) {
1142 /* Conditional to avoid spurious error messages */
1143 qeth_bridgeport_setrole(card, card->options.sbp.role);
1144 /* Let the callback function refresh the stored role value. */
1145 qeth_bridgeport_query_ports(card, &card->options.sbp.role,
1146 NULL);
1147 }
1148 if (card->options.sbp.hostnotification) {
1149 if (qeth_bridgeport_an_set(card, 1))
1150 card->options.sbp.hostnotification = 0;
1151 }
1152 }
1153
1154 /**
1155 * qeth_l2_detect_dev2br_support() -
1156 * Detect whether this card supports 'dev to bridge fdb network address
1157 * change notification' and thus can support the learning_sync bridgeport
1158 * attribute
1159 * @card: qeth_card structure pointer
1160 */
1161 static void qeth_l2_detect_dev2br_support(struct qeth_card *card)
1162 {
1163 struct qeth_priv *priv = netdev_priv(card->dev);
1164 bool dev2br_supported;
1165
1166 QETH_CARD_TEXT(card, 2, "d2brsup");
1167 if (!IS_IQD(card))
1168 return;
1169
1170 /* dev2br requires valid cssid,iid,chid */
1171 dev2br_supported = card->info.ids_valid &&
1172 css_general_characteristics.enarf;
1173 QETH_CARD_TEXT_(card, 2, "D2Bsup%02x", dev2br_supported);
1174
1175 if (dev2br_supported)
1176 priv->brport_hw_features |= BR_LEARNING_SYNC;
1177 else
1178 priv->brport_hw_features &= ~BR_LEARNING_SYNC;
1179 }
1180
1181 static void qeth_l2_enable_brport_features(struct qeth_card *card)
1182 {
1183 struct qeth_priv *priv = netdev_priv(card->dev);
1184 int rc;
1185
1186 if (priv->brport_features & BR_LEARNING_SYNC) {
1187 if (priv->brport_hw_features & BR_LEARNING_SYNC) {
1188 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1189 rc = qeth_l2_dev2br_an_set(card, true);
1190 if (rc == -EAGAIN) {
1191 /* Recoverable error, retry once */
1192 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1193 qeth_l2_dev2br_fdb_flush(card);
1194 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1195 rc = qeth_l2_dev2br_an_set(card, true);
1196 }
1197 if (rc) {
1198 netdev_err(card->dev,
1199 "failed to enable bridge learning_sync: %d\n",
1200 rc);
1201 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1202 qeth_l2_dev2br_fdb_flush(card);
1203 priv->brport_features ^= BR_LEARNING_SYNC;
1204 }
1205 } else {
1206 dev_warn(&card->gdev->dev,
1207 "bridge learning_sync not supported\n");
1208 priv->brport_features ^= BR_LEARNING_SYNC;
1209 }
1210 }
1211 }
1212
1213 /* SETBRIDGEPORT support, async notifications */
1214
1215 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1216
1217 /**
1218 * qeth_bridge_emit_host_event() - bridgeport address change notification
1219 * @card: qeth_card structure pointer, for udev events.
1220 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1221 * and reset token and addr_lnid are unused and may be NULL.
1222 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1223 * object, 0 - addition of an object.
1224 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1225 * @token: "network token" structure identifying physical address of the port.
1226 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1227 *
1228 * This function is called when registrations and deregistrations are
1229 * reported by the hardware, and also when notifications are enabled -
1230 * for all currently registered addresses.
1231 */
1232 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1233 enum qeth_an_event_type evtype,
1234 u8 code,
1235 struct net_if_token *token,
1236 struct mac_addr_lnid *addr_lnid)
1237 {
1238 char str[7][32];
1239 char *env[8];
1240 int i = 0;
1241
1242 switch (evtype) {
1243 case anev_reg_unreg:
1244 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1245 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1246 ? "deregister" : "register");
1247 env[i] = str[i]; i++;
1248 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1249 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1250 addr_lnid->lnid);
1251 env[i] = str[i]; i++;
1252 }
1253 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1254 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1255 addr_lnid->mac);
1256 env[i] = str[i]; i++;
1257 }
1258 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1259 token->cssid, token->ssid, token->devnum);
1260 env[i] = str[i]; i++;
1261 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1262 env[i] = str[i]; i++;
1263 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1264 token->chpid);
1265 env[i] = str[i]; i++;
1266 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1267 env[i] = str[i]; i++;
1268 break;
1269 case anev_abort:
1270 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1271 env[i] = str[i]; i++;
1272 break;
1273 case anev_reset:
1274 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1275 env[i] = str[i]; i++;
1276 break;
1277 }
1278 env[i] = NULL;
1279 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1280 }
1281
1282 struct qeth_bridge_state_data {
1283 struct work_struct worker;
1284 struct qeth_card *card;
1285 u8 role;
1286 u8 state;
1287 };
1288
1289 static void qeth_bridge_state_change_worker(struct work_struct *work)
1290 {
1291 struct qeth_bridge_state_data *data =
1292 container_of(work, struct qeth_bridge_state_data, worker);
1293 char env_locrem[32];
1294 char env_role[32];
1295 char env_state[32];
1296 char *env[] = {
1297 env_locrem,
1298 env_role,
1299 env_state,
1300 NULL
1301 };
1302
1303 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1304 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1305 (data->role == QETH_SBP_ROLE_NONE) ? "none" :
1306 (data->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1307 (data->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1308 "<INVALID>");
1309 snprintf(env_state, sizeof(env_state), "STATE=%s",
1310 (data->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1311 (data->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1312 (data->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1313 "<INVALID>");
1314 kobject_uevent_env(&data->card->gdev->dev.kobj,
1315 KOBJ_CHANGE, env);
1316 kfree(data);
1317 }
1318
1319 static void qeth_bridge_state_change(struct qeth_card *card,
1320 struct qeth_ipa_cmd *cmd)
1321 {
1322 struct qeth_sbp_port_data *qports = &cmd->data.sbp.data.port_data;
1323 struct qeth_bridge_state_data *data;
1324
1325 QETH_CARD_TEXT(card, 2, "brstchng");
1326 if (qports->num_entries == 0) {
1327 QETH_CARD_TEXT(card, 2, "BPempty");
1328 return;
1329 }
1330 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1331 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1332 return;
1333 }
1334
1335 data = kzalloc(sizeof(*data), GFP_ATOMIC);
1336 if (!data) {
1337 QETH_CARD_TEXT(card, 2, "BPSalloc");
1338 return;
1339 }
1340 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1341 data->card = card;
1342 /* Information for the local port: */
1343 data->role = qports->entry[0].role;
1344 data->state = qports->entry[0].state;
1345
1346 queue_work(card->event_wq, &data->worker);
1347 }
1348
1349 struct qeth_addr_change_data {
1350 struct delayed_work dwork;
1351 struct qeth_card *card;
1352 struct qeth_ipacmd_addr_change ac_event;
1353 };
1354
1355 static void qeth_l2_dev2br_worker(struct work_struct *work)
1356 {
1357 struct delayed_work *dwork = to_delayed_work(work);
1358 struct qeth_addr_change_data *data;
1359 struct qeth_card *card;
1360 struct qeth_priv *priv;
1361 unsigned int i;
1362 int rc;
1363
1364 data = container_of(dwork, struct qeth_addr_change_data, dwork);
1365 card = data->card;
1366 priv = netdev_priv(card->dev);
1367
1368 QETH_CARD_TEXT(card, 4, "dev2brew");
1369
1370 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE)
1371 goto free;
1372
1373 if (data->ac_event.lost_event_mask) {
1374 /* Potential re-config in progress, try again later: */
1375 if (!rtnl_trylock()) {
1376 queue_delayed_work(card->event_wq, dwork,
1377 msecs_to_jiffies(100));
1378 return;
1379 }
1380
1381 if (!netif_device_present(card->dev)) {
1382 rtnl_unlock();
1383 goto free;
1384 }
1385
1386 QETH_DBF_MESSAGE(3,
1387 "Address change notification overflow on device %x\n",
1388 CARD_DEVID(card));
1389 /* Card fdb and bridge fdb are out of sync, card has stopped
1390 * notifications (no need to drain_workqueue). Purge all
1391 * 'extern_learn' entries from the parent bridge and restart
1392 * the notifications.
1393 */
1394 qeth_l2_dev2br_fdb_flush(card);
1395 rc = qeth_l2_dev2br_an_set(card, true);
1396 if (rc) {
1397 /* TODO: if we want to retry after -EAGAIN, be
1398 * aware there could be stale entries in the
1399 * workqueue now, that need to be drained.
1400 * For now we give up:
1401 */
1402 netdev_err(card->dev,
1403 "bridge learning_sync failed to recover: %d\n",
1404 rc);
1405 WRITE_ONCE(card->info.pnso_mode,
1406 QETH_PNSO_NONE);
1407 /* To remove fdb entries reported by an_set: */
1408 qeth_l2_dev2br_fdb_flush(card);
1409 priv->brport_features ^= BR_LEARNING_SYNC;
1410 } else {
1411 QETH_DBF_MESSAGE(3,
1412 "Address Notification resynced on device %x\n",
1413 CARD_DEVID(card));
1414 }
1415
1416 rtnl_unlock();
1417 } else {
1418 for (i = 0; i < data->ac_event.num_entries; i++) {
1419 struct qeth_ipacmd_addr_change_entry *entry =
1420 &data->ac_event.entry[i];
1421 qeth_l2_dev2br_fdb_notify(card,
1422 entry->change_code,
1423 &entry->token,
1424 &entry->addr_lnid);
1425 }
1426 }
1427
1428 free:
1429 kfree(data);
1430 }
1431
1432 static void qeth_addr_change_event_worker(struct work_struct *work)
1433 {
1434 struct delayed_work *dwork = to_delayed_work(work);
1435 struct qeth_addr_change_data *data;
1436 struct qeth_card *card;
1437 int i;
1438
1439 data = container_of(dwork, struct qeth_addr_change_data, dwork);
1440 card = data->card;
1441
1442 QETH_CARD_TEXT(data->card, 4, "adrchgew");
1443
1444 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE)
1445 goto free;
1446
1447 if (data->ac_event.lost_event_mask) {
1448 /* Potential re-config in progress, try again later: */
1449 if (!mutex_trylock(&card->sbp_lock)) {
1450 queue_delayed_work(card->event_wq, dwork,
1451 msecs_to_jiffies(100));
1452 return;
1453 }
1454
1455 dev_info(&data->card->gdev->dev,
1456 "Address change notification stopped on %s (%s)\n",
1457 netdev_name(card->dev),
1458 (data->ac_event.lost_event_mask == 0x01)
1459 ? "Overflow"
1460 : (data->ac_event.lost_event_mask == 0x02)
1461 ? "Bridge port state change"
1462 : "Unknown reason");
1463
1464 data->card->options.sbp.hostnotification = 0;
1465 card->info.pnso_mode = QETH_PNSO_NONE;
1466 mutex_unlock(&data->card->sbp_lock);
1467 qeth_bridge_emit_host_event(data->card, anev_abort,
1468 0, NULL, NULL);
1469 } else
1470 for (i = 0; i < data->ac_event.num_entries; i++) {
1471 struct qeth_ipacmd_addr_change_entry *entry =
1472 &data->ac_event.entry[i];
1473 qeth_bridge_emit_host_event(data->card,
1474 anev_reg_unreg,
1475 entry->change_code,
1476 &entry->token,
1477 &entry->addr_lnid);
1478 }
1479
1480 free:
1481 kfree(data);
1482 }
1483
1484 static void qeth_addr_change_event(struct qeth_card *card,
1485 struct qeth_ipa_cmd *cmd)
1486 {
1487 struct qeth_ipacmd_addr_change *hostevs =
1488 &cmd->data.addrchange;
1489 struct qeth_addr_change_data *data;
1490 int extrasize;
1491
1492 if (card->info.pnso_mode == QETH_PNSO_NONE)
1493 return;
1494
1495 QETH_CARD_TEXT(card, 4, "adrchgev");
1496 if (cmd->hdr.return_code != 0x0000) {
1497 if (cmd->hdr.return_code == 0x0010) {
1498 if (hostevs->lost_event_mask == 0x00)
1499 hostevs->lost_event_mask = 0xff;
1500 } else {
1501 QETH_CARD_TEXT_(card, 2, "ACHN%04x",
1502 cmd->hdr.return_code);
1503 return;
1504 }
1505 }
1506 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1507 hostevs->num_entries;
1508 data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize,
1509 GFP_ATOMIC);
1510 if (!data) {
1511 QETH_CARD_TEXT(card, 2, "ACNalloc");
1512 return;
1513 }
1514 if (card->info.pnso_mode == QETH_PNSO_BRIDGEPORT)
1515 INIT_DELAYED_WORK(&data->dwork, qeth_addr_change_event_worker);
1516 else
1517 INIT_DELAYED_WORK(&data->dwork, qeth_l2_dev2br_worker);
1518 data->card = card;
1519 memcpy(&data->ac_event, hostevs,
1520 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1521 queue_delayed_work(card->event_wq, &data->dwork, 0);
1522 }
1523
1524 /* SETBRIDGEPORT support; sending commands */
1525
1526 struct _qeth_sbp_cbctl {
1527 union {
1528 u32 supported;
1529 struct {
1530 enum qeth_sbp_roles *role;
1531 enum qeth_sbp_states *state;
1532 } qports;
1533 } data;
1534 };
1535
1536 static int qeth_bridgeport_makerc(struct qeth_card *card,
1537 struct qeth_ipa_cmd *cmd)
1538 {
1539 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp;
1540 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code;
1541 u16 ipa_rc = cmd->hdr.return_code;
1542 u16 sbp_rc = sbp->hdr.return_code;
1543 int rc;
1544
1545 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS)
1546 return 0;
1547
1548 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) ||
1549 (!IS_IQD(card) && ipa_rc == sbp_rc)) {
1550 switch (sbp_rc) {
1551 case IPA_RC_SUCCESS:
1552 rc = 0;
1553 break;
1554 case IPA_RC_L2_UNSUPPORTED_CMD:
1555 case IPA_RC_UNSUPPORTED_COMMAND:
1556 rc = -EOPNOTSUPP;
1557 break;
1558 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1559 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1560 rc = -ENODEV; /* maybe not the best code here? */
1561 dev_err(&card->gdev->dev,
1562 "The device is not configured as a Bridge Port\n");
1563 break;
1564 case IPA_RC_SBP_OSA_OS_MISMATCH:
1565 case IPA_RC_SBP_IQD_OS_MISMATCH:
1566 rc = -EPERM;
1567 dev_err(&card->gdev->dev,
1568 "A Bridge Port is already configured by a different operating system\n");
1569 break;
1570 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1571 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1572 switch (setcmd) {
1573 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1574 rc = -EEXIST;
1575 dev_err(&card->gdev->dev,
1576 "The LAN already has a primary Bridge Port\n");
1577 break;
1578 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1579 rc = -EBUSY;
1580 dev_err(&card->gdev->dev,
1581 "The device is already a primary Bridge Port\n");
1582 break;
1583 default:
1584 rc = -EIO;
1585 }
1586 break;
1587 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1588 case IPA_RC_SBP_IQD_CURRENT_SECOND:
1589 rc = -EBUSY;
1590 dev_err(&card->gdev->dev,
1591 "The device is already a secondary Bridge Port\n");
1592 break;
1593 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1594 case IPA_RC_SBP_IQD_LIMIT_SECOND:
1595 rc = -EEXIST;
1596 dev_err(&card->gdev->dev,
1597 "The LAN cannot have more secondary Bridge Ports\n");
1598 break;
1599 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1600 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1601 rc = -EBUSY;
1602 dev_err(&card->gdev->dev,
1603 "The device is already a primary Bridge Port\n");
1604 break;
1605 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1606 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1607 rc = -EACCES;
1608 dev_err(&card->gdev->dev,
1609 "The device is not authorized to be a Bridge Port\n");
1610 break;
1611 default:
1612 rc = -EIO;
1613 }
1614 } else {
1615 switch (ipa_rc) {
1616 case IPA_RC_NOTSUPP:
1617 rc = -EOPNOTSUPP;
1618 break;
1619 case IPA_RC_UNSUPPORTED_COMMAND:
1620 rc = -EOPNOTSUPP;
1621 break;
1622 default:
1623 rc = -EIO;
1624 }
1625 }
1626
1627 if (rc) {
1628 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc);
1629 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc);
1630 }
1631 return rc;
1632 }
1633
1634 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1635 enum qeth_ipa_sbp_cmd sbp_cmd,
1636 unsigned int data_length)
1637 {
1638 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD :
1639 IPA_CMD_SETBRIDGEPORT_OSA;
1640 struct qeth_ipacmd_sbp_hdr *hdr;
1641 struct qeth_cmd_buffer *iob;
1642
1643 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE,
1644 data_length +
1645 offsetof(struct qeth_ipacmd_setbridgeport,
1646 data));
1647 if (!iob)
1648 return iob;
1649
1650 hdr = &__ipa_cmd(iob)->data.sbp.hdr;
1651 hdr->cmdlength = sizeof(*hdr) + data_length;
1652 hdr->command_code = sbp_cmd;
1653 hdr->used_total = 1;
1654 hdr->seq_no = 1;
1655 return iob;
1656 }
1657
1658 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1659 struct qeth_reply *reply, unsigned long data)
1660 {
1661 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1662 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1663 int rc;
1664
1665 QETH_CARD_TEXT(card, 2, "brqsupcb");
1666 rc = qeth_bridgeport_makerc(card, cmd);
1667 if (rc)
1668 return rc;
1669
1670 cbctl->data.supported =
1671 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1672 return 0;
1673 }
1674
1675 /**
1676 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1677 * @card: qeth_card structure pointer.
1678 *
1679 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1680 * strucutre: card->options.sbp.supported_funcs.
1681 */
1682 static void qeth_bridgeport_query_support(struct qeth_card *card)
1683 {
1684 struct qeth_cmd_buffer *iob;
1685 struct _qeth_sbp_cbctl cbctl;
1686
1687 QETH_CARD_TEXT(card, 2, "brqsuppo");
1688 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1689 SBP_DATA_SIZEOF(query_cmds_supp));
1690 if (!iob)
1691 return;
1692
1693 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1694 &cbctl)) {
1695 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1696 card->options.sbp.supported_funcs = 0;
1697 return;
1698 }
1699 card->options.sbp.supported_funcs = cbctl.data.supported;
1700 }
1701
1702 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1703 struct qeth_reply *reply, unsigned long data)
1704 {
1705 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1706 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1707 struct qeth_sbp_port_data *qports;
1708 int rc;
1709
1710 QETH_CARD_TEXT(card, 2, "brqprtcb");
1711 rc = qeth_bridgeport_makerc(card, cmd);
1712 if (rc)
1713 return rc;
1714
1715 qports = &cmd->data.sbp.data.port_data;
1716 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1717 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1718 return -EINVAL;
1719 }
1720 /* first entry contains the state of the local port */
1721 if (qports->num_entries > 0) {
1722 if (cbctl->data.qports.role)
1723 *cbctl->data.qports.role = qports->entry[0].role;
1724 if (cbctl->data.qports.state)
1725 *cbctl->data.qports.state = qports->entry[0].state;
1726 }
1727 return 0;
1728 }
1729
1730 /**
1731 * qeth_bridgeport_query_ports() - query local bridgeport status.
1732 * @card: qeth_card structure pointer.
1733 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1734 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1735 *
1736 * Returns negative errno-compatible error indication or 0 on success.
1737 *
1738 * 'role' and 'state' are not updated in case of hardware operation failure.
1739 */
1740 int qeth_bridgeport_query_ports(struct qeth_card *card,
1741 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1742 {
1743 struct qeth_cmd_buffer *iob;
1744 struct _qeth_sbp_cbctl cbctl = {
1745 .data = {
1746 .qports = {
1747 .role = role,
1748 .state = state,
1749 },
1750 },
1751 };
1752
1753 QETH_CARD_TEXT(card, 2, "brqports");
1754 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1755 return -EOPNOTSUPP;
1756 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1757 if (!iob)
1758 return -ENOMEM;
1759
1760 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1761 &cbctl);
1762 }
1763
1764 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1765 struct qeth_reply *reply, unsigned long data)
1766 {
1767 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1768
1769 QETH_CARD_TEXT(card, 2, "brsetrcb");
1770 return qeth_bridgeport_makerc(card, cmd);
1771 }
1772
1773 /**
1774 * qeth_bridgeport_setrole() - Assign primary role to the port.
1775 * @card: qeth_card structure pointer.
1776 * @role: Role to assign.
1777 *
1778 * Returns negative errno-compatible error indication or 0 on success.
1779 */
1780 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1781 {
1782 struct qeth_cmd_buffer *iob;
1783 enum qeth_ipa_sbp_cmd setcmd;
1784 unsigned int cmdlength = 0;
1785
1786 QETH_CARD_TEXT(card, 2, "brsetrol");
1787 switch (role) {
1788 case QETH_SBP_ROLE_NONE:
1789 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1790 break;
1791 case QETH_SBP_ROLE_PRIMARY:
1792 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1793 cmdlength = SBP_DATA_SIZEOF(set_primary);
1794 break;
1795 case QETH_SBP_ROLE_SECONDARY:
1796 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1797 break;
1798 default:
1799 return -EINVAL;
1800 }
1801 if (!(card->options.sbp.supported_funcs & setcmd))
1802 return -EOPNOTSUPP;
1803 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1804 if (!iob)
1805 return -ENOMEM;
1806
1807 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL);
1808 }
1809
1810 static void qeth_bridgeport_an_set_cb(void *priv,
1811 struct chsc_pnso_naid_l2 *entry)
1812 {
1813 struct qeth_card *card = (struct qeth_card *)priv;
1814 u8 code;
1815
1816 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1817 if (entry->addr_lnid.lnid < VLAN_N_VID)
1818 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1819 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1820 (struct net_if_token *)&entry->nit,
1821 (struct mac_addr_lnid *)&entry->addr_lnid);
1822 }
1823
1824 /**
1825 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1826 * @card: qeth_card structure pointer.
1827 * @enable: 0 - disable, non-zero - enable notifications
1828 *
1829 * Returns negative errno-compatible error indication or 0 on success.
1830 *
1831 * On enable, emits a series of address notifications udev events for all
1832 * currently registered hosts.
1833 */
1834 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1835 {
1836 int rc;
1837
1838 if (!card->options.sbp.supported_funcs)
1839 return -EOPNOTSUPP;
1840
1841 if (enable) {
1842 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1843 qeth_l2_set_pnso_mode(card, QETH_PNSO_BRIDGEPORT);
1844 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 1,
1845 qeth_bridgeport_an_set_cb, card);
1846 if (rc)
1847 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1848 } else {
1849 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 0, NULL, NULL);
1850 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1851 }
1852 return rc;
1853 }
1854
1855 /* VNIC Characteristics support */
1856
1857 /* handle VNICC IPA command return codes; convert to error codes */
1858 static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc)
1859 {
1860 int rc;
1861
1862 switch (ipa_rc) {
1863 case IPA_RC_SUCCESS:
1864 return ipa_rc;
1865 case IPA_RC_L2_UNSUPPORTED_CMD:
1866 case IPA_RC_NOTSUPP:
1867 rc = -EOPNOTSUPP;
1868 break;
1869 case IPA_RC_VNICC_OOSEQ:
1870 rc = -EALREADY;
1871 break;
1872 case IPA_RC_VNICC_VNICBP:
1873 rc = -EBUSY;
1874 break;
1875 case IPA_RC_L2_ADDR_TABLE_FULL:
1876 rc = -ENOSPC;
1877 break;
1878 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
1879 rc = -EACCES;
1880 break;
1881 default:
1882 rc = -EIO;
1883 }
1884
1885 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
1886 return rc;
1887 }
1888
1889 /* generic VNICC request call back */
1890 static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
1891 struct qeth_reply *reply,
1892 unsigned long data)
1893 {
1894 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1895 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
1896 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command;
1897
1898 QETH_CARD_TEXT(card, 2, "vniccrcb");
1899 if (cmd->hdr.return_code)
1900 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code);
1901 /* return results to caller */
1902 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported;
1903 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled;
1904
1905 if (sub_cmd == IPA_VNICC_QUERY_CMDS)
1906 *(u32 *)reply->param = rep->data.query_cmds.sup_cmds;
1907 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT)
1908 *(u32 *)reply->param = rep->data.getset_timeout.timeout;
1909
1910 return 0;
1911 }
1912
1913 static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card,
1914 u32 vnicc_cmd,
1915 unsigned int data_length)
1916 {
1917 struct qeth_ipacmd_vnicc_hdr *hdr;
1918 struct qeth_cmd_buffer *iob;
1919
1920 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE,
1921 data_length +
1922 offsetof(struct qeth_ipacmd_vnicc, data));
1923 if (!iob)
1924 return NULL;
1925
1926 hdr = &__ipa_cmd(iob)->data.vnicc.hdr;
1927 hdr->data_length = sizeof(*hdr) + data_length;
1928 hdr->sub_command = vnicc_cmd;
1929 return iob;
1930 }
1931
1932 /* VNICC query VNIC characteristics request */
1933 static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
1934 {
1935 struct qeth_cmd_buffer *iob;
1936
1937 QETH_CARD_TEXT(card, 2, "vniccqch");
1938 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0);
1939 if (!iob)
1940 return -ENOMEM;
1941
1942 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1943 }
1944
1945 /* VNICC query sub commands request */
1946 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
1947 u32 *sup_cmds)
1948 {
1949 struct qeth_cmd_buffer *iob;
1950
1951 QETH_CARD_TEXT(card, 2, "vniccqcm");
1952 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS,
1953 VNICC_DATA_SIZEOF(query_cmds));
1954 if (!iob)
1955 return -ENOMEM;
1956
1957 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char;
1958
1959 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds);
1960 }
1961
1962 /* VNICC enable/disable characteristic request */
1963 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
1964 u32 cmd)
1965 {
1966 struct qeth_cmd_buffer *iob;
1967
1968 QETH_CARD_TEXT(card, 2, "vniccedc");
1969 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char));
1970 if (!iob)
1971 return -ENOMEM;
1972
1973 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char;
1974
1975 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1976 }
1977
1978 /* VNICC get/set timeout for characteristic request */
1979 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
1980 u32 cmd, u32 *timeout)
1981 {
1982 struct qeth_vnicc_getset_timeout *getset_timeout;
1983 struct qeth_cmd_buffer *iob;
1984
1985 QETH_CARD_TEXT(card, 2, "vniccgst");
1986 iob = qeth_l2_vnicc_build_cmd(card, cmd,
1987 VNICC_DATA_SIZEOF(getset_timeout));
1988 if (!iob)
1989 return -ENOMEM;
1990
1991 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout;
1992 getset_timeout->vnic_char = vnicc;
1993
1994 if (cmd == IPA_VNICC_SET_TIMEOUT)
1995 getset_timeout->timeout = *timeout;
1996
1997 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, timeout);
1998 }
1999
2000 /* recover user timeout setting */
2001 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
2002 u32 *timeout)
2003 {
2004 if (card->options.vnicc.sup_chars & vnicc &&
2005 card->options.vnicc.getset_timeout_sup & vnicc &&
2006 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
2007 timeout))
2008 return false;
2009 *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2010 return true;
2011 }
2012
2013 /* set current VNICC flag state; called from sysfs store function */
2014 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
2015 {
2016 int rc = 0;
2017 u32 cmd;
2018
2019 QETH_CARD_TEXT(card, 2, "vniccsch");
2020
2021 /* check if characteristic and enable/disable are supported */
2022 if (!(card->options.vnicc.sup_chars & vnicc) ||
2023 !(card->options.vnicc.set_char_sup & vnicc))
2024 return -EOPNOTSUPP;
2025
2026 if (qeth_bridgeport_is_in_use(card))
2027 return -EBUSY;
2028
2029 /* set enable/disable command and store wanted characteristic */
2030 if (state) {
2031 cmd = IPA_VNICC_ENABLE;
2032 card->options.vnicc.wanted_chars |= vnicc;
2033 } else {
2034 cmd = IPA_VNICC_DISABLE;
2035 card->options.vnicc.wanted_chars &= ~vnicc;
2036 }
2037
2038 /* do we need to do anything? */
2039 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
2040 return rc;
2041
2042 /* if card is not ready, simply stop here */
2043 if (!qeth_card_hw_is_reachable(card)) {
2044 if (state)
2045 card->options.vnicc.cur_chars |= vnicc;
2046 else
2047 card->options.vnicc.cur_chars &= ~vnicc;
2048 return rc;
2049 }
2050
2051 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
2052 if (rc)
2053 card->options.vnicc.wanted_chars =
2054 card->options.vnicc.cur_chars;
2055 else {
2056 /* successful online VNICC change; handle special cases */
2057 if (state && vnicc == QETH_VNICC_RX_BCAST)
2058 card->options.vnicc.rx_bcast_enabled = true;
2059 if (!state && vnicc == QETH_VNICC_LEARNING)
2060 qeth_l2_vnicc_recover_timeout(card, vnicc,
2061 &card->options.vnicc.learning_timeout);
2062 }
2063
2064 return rc;
2065 }
2066
2067 /* get current VNICC flag state; called from sysfs show function */
2068 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
2069 {
2070 int rc = 0;
2071
2072 QETH_CARD_TEXT(card, 2, "vniccgch");
2073
2074 /* check if characteristic is supported */
2075 if (!(card->options.vnicc.sup_chars & vnicc))
2076 return -EOPNOTSUPP;
2077
2078 if (qeth_bridgeport_is_in_use(card))
2079 return -EBUSY;
2080
2081 /* if card is ready, query current VNICC state */
2082 if (qeth_card_hw_is_reachable(card))
2083 rc = qeth_l2_vnicc_query_chars(card);
2084
2085 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
2086 return rc;
2087 }
2088
2089 /* set VNICC timeout; called from sysfs store function. Currently, only learning
2090 * supports timeout
2091 */
2092 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
2093 {
2094 int rc = 0;
2095
2096 QETH_CARD_TEXT(card, 2, "vniccsto");
2097
2098 /* check if characteristic and set_timeout are supported */
2099 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2100 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2101 return -EOPNOTSUPP;
2102
2103 if (qeth_bridgeport_is_in_use(card))
2104 return -EBUSY;
2105
2106 /* do we need to do anything? */
2107 if (card->options.vnicc.learning_timeout == timeout)
2108 return rc;
2109
2110 /* if card is not ready, simply store the value internally and return */
2111 if (!qeth_card_hw_is_reachable(card)) {
2112 card->options.vnicc.learning_timeout = timeout;
2113 return rc;
2114 }
2115
2116 /* send timeout value to card; if successful, store value internally */
2117 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2118 IPA_VNICC_SET_TIMEOUT, &timeout);
2119 if (!rc)
2120 card->options.vnicc.learning_timeout = timeout;
2121
2122 return rc;
2123 }
2124
2125 /* get current VNICC timeout; called from sysfs show function. Currently, only
2126 * learning supports timeout
2127 */
2128 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
2129 {
2130 int rc = 0;
2131
2132 QETH_CARD_TEXT(card, 2, "vniccgto");
2133
2134 /* check if characteristic and get_timeout are supported */
2135 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2136 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2137 return -EOPNOTSUPP;
2138
2139 if (qeth_bridgeport_is_in_use(card))
2140 return -EBUSY;
2141
2142 /* if card is ready, get timeout. Otherwise, just return stored value */
2143 *timeout = card->options.vnicc.learning_timeout;
2144 if (qeth_card_hw_is_reachable(card))
2145 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2146 IPA_VNICC_GET_TIMEOUT,
2147 timeout);
2148
2149 return rc;
2150 }
2151
2152 /* check if VNICC is currently enabled */
2153 static bool _qeth_l2_vnicc_is_in_use(struct qeth_card *card)
2154 {
2155 if (!card->options.vnicc.sup_chars)
2156 return false;
2157 /* default values are only OK if rx_bcast was not enabled by user
2158 * or the card is offline.
2159 */
2160 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
2161 if (!card->options.vnicc.rx_bcast_enabled ||
2162 !qeth_card_hw_is_reachable(card))
2163 return false;
2164 }
2165 return true;
2166 }
2167
2168 /**
2169 * qeth_bridgeport_allowed - are any qeth_bridgeport functions allowed?
2170 * @card: qeth_card structure pointer
2171 *
2172 * qeth_bridgeport functionality is mutually exclusive with usage of the
2173 * VNIC Characteristics and dev2br address notifications
2174 */
2175 bool qeth_bridgeport_allowed(struct qeth_card *card)
2176 {
2177 struct qeth_priv *priv = netdev_priv(card->dev);
2178
2179 return (!_qeth_l2_vnicc_is_in_use(card) &&
2180 !(priv->brport_features & BR_LEARNING_SYNC));
2181 }
2182
2183 /* recover user characteristic setting */
2184 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2185 bool enable)
2186 {
2187 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2188
2189 if (card->options.vnicc.sup_chars & vnicc &&
2190 card->options.vnicc.set_char_sup & vnicc &&
2191 !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2192 return false;
2193 card->options.vnicc.wanted_chars &= ~vnicc;
2194 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2195 return true;
2196 }
2197
2198 /* (re-)initialize VNICC */
2199 static void qeth_l2_vnicc_init(struct qeth_card *card)
2200 {
2201 u32 *timeout = &card->options.vnicc.learning_timeout;
2202 bool enable, error = false;
2203 unsigned int chars_len, i;
2204 unsigned long chars_tmp;
2205 u32 sup_cmds, vnicc;
2206
2207 QETH_CARD_TEXT(card, 2, "vniccini");
2208 /* reset rx_bcast */
2209 card->options.vnicc.rx_bcast_enabled = 0;
2210 /* initial query and storage of VNIC characteristics */
2211 if (qeth_l2_vnicc_query_chars(card)) {
2212 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2213 *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
2214 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2215 /* fail quietly if user didn't change the default config */
2216 card->options.vnicc.sup_chars = 0;
2217 card->options.vnicc.cur_chars = 0;
2218 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2219 return;
2220 }
2221 /* get supported commands for each supported characteristic */
2222 chars_tmp = card->options.vnicc.sup_chars;
2223 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2224 for_each_set_bit(i, &chars_tmp, chars_len) {
2225 vnicc = BIT(i);
2226 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) {
2227 sup_cmds = 0;
2228 error = true;
2229 }
2230 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) &&
2231 (sup_cmds & IPA_VNICC_GET_TIMEOUT))
2232 card->options.vnicc.getset_timeout_sup |= vnicc;
2233 else
2234 card->options.vnicc.getset_timeout_sup &= ~vnicc;
2235 if ((sup_cmds & IPA_VNICC_ENABLE) &&
2236 (sup_cmds & IPA_VNICC_DISABLE))
2237 card->options.vnicc.set_char_sup |= vnicc;
2238 else
2239 card->options.vnicc.set_char_sup &= ~vnicc;
2240 }
2241 /* enforce assumed default values and recover settings, if changed */
2242 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2243 timeout);
2244 /* Change chars, if necessary */
2245 chars_tmp = card->options.vnicc.wanted_chars ^
2246 card->options.vnicc.cur_chars;
2247 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2248 for_each_set_bit(i, &chars_tmp, chars_len) {
2249 vnicc = BIT(i);
2250 enable = card->options.vnicc.wanted_chars & vnicc;
2251 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2252 }
2253 if (error)
2254 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2255 }
2256
2257 /* configure default values of VNIC characteristics */
2258 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2259 {
2260 /* characteristics values */
2261 card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2262 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
2263 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2264 /* supported commands */
2265 card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
2266 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
2267 /* settings wanted by users */
2268 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2269 }
2270
2271 static const struct device_type qeth_l2_devtype = {
2272 .name = "qeth_layer2",
2273 .groups = qeth_l2_attr_groups,
2274 };
2275
2276 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
2277 {
2278 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2279 int rc;
2280
2281 qeth_l2_vnicc_set_defaults(card);
2282 mutex_init(&card->sbp_lock);
2283
2284 if (gdev->dev.type) {
2285 rc = device_add_groups(&gdev->dev, qeth_l2_attr_groups);
2286 if (rc)
2287 return rc;
2288 } else {
2289 gdev->dev.type = &qeth_l2_devtype;
2290 }
2291
2292 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work);
2293 return 0;
2294 }
2295
2296 static void qeth_l2_remove_device(struct ccwgroup_device *gdev)
2297 {
2298 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2299 struct qeth_priv *priv;
2300
2301 if (gdev->dev.type != &qeth_l2_devtype)
2302 device_remove_groups(&gdev->dev, qeth_l2_attr_groups);
2303
2304 qeth_set_allowed_threads(card, 0, 1);
2305 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2306
2307 if (gdev->state == CCWGROUP_ONLINE)
2308 qeth_set_offline(card, card->discipline, false);
2309
2310 if (card->dev->reg_state == NETREG_REGISTERED) {
2311 priv = netdev_priv(card->dev);
2312 if (priv->brport_features & BR_LEARNING_SYNC) {
2313 rtnl_lock();
2314 qeth_l2_br2dev_put();
2315 rtnl_unlock();
2316 }
2317 unregister_netdev(card->dev);
2318 }
2319 }
2320
2321 static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok)
2322 {
2323 struct net_device *dev = card->dev;
2324 int rc = 0;
2325
2326 qeth_l2_detect_dev2br_support(card);
2327
2328 mutex_lock(&card->sbp_lock);
2329 qeth_bridgeport_query_support(card);
2330 if (card->options.sbp.supported_funcs) {
2331 qeth_l2_setup_bridgeport_attrs(card);
2332 dev_info(&card->gdev->dev,
2333 "The device represents a Bridge Capable Port\n");
2334 }
2335 mutex_unlock(&card->sbp_lock);
2336
2337 qeth_l2_register_dev_addr(card);
2338
2339 /* for the rx_bcast characteristic, init VNICC after setmac */
2340 qeth_l2_vnicc_init(card);
2341
2342 qeth_l2_trace_features(card);
2343
2344 /* softsetup */
2345 QETH_CARD_TEXT(card, 2, "softsetp");
2346
2347 card->state = CARD_STATE_SOFTSETUP;
2348
2349 qeth_set_allowed_threads(card, 0xffffffff, 0);
2350
2351 if (dev->reg_state != NETREG_REGISTERED) {
2352 rc = qeth_l2_setup_netdev(card);
2353 if (rc)
2354 goto err_setup;
2355
2356 if (carrier_ok)
2357 netif_carrier_on(dev);
2358 } else {
2359 rtnl_lock();
2360 rc = qeth_set_real_num_tx_queues(card,
2361 qeth_tx_actual_queues(card));
2362 if (rc) {
2363 rtnl_unlock();
2364 goto err_set_queues;
2365 }
2366
2367 if (carrier_ok)
2368 netif_carrier_on(dev);
2369 else
2370 netif_carrier_off(dev);
2371
2372 netif_device_attach(dev);
2373 qeth_enable_hw_features(dev);
2374 qeth_l2_enable_brport_features(card);
2375
2376 if (card->info.open_when_online) {
2377 card->info.open_when_online = 0;
2378 dev_open(dev, NULL);
2379 }
2380 rtnl_unlock();
2381 }
2382 return 0;
2383
2384 err_set_queues:
2385 err_setup:
2386 qeth_set_allowed_threads(card, 0, 1);
2387 card->state = CARD_STATE_DOWN;
2388 return rc;
2389 }
2390
2391 static void qeth_l2_set_offline(struct qeth_card *card)
2392 {
2393 struct qeth_priv *priv = netdev_priv(card->dev);
2394
2395 qeth_set_allowed_threads(card, 0, 1);
2396 qeth_l2_drain_rx_mode_cache(card);
2397
2398 if (card->state == CARD_STATE_SOFTSETUP)
2399 card->state = CARD_STATE_DOWN;
2400
2401 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
2402 if (priv->brport_features & BR_LEARNING_SYNC)
2403 qeth_l2_dev2br_fdb_flush(card);
2404 }
2405
2406 /* Returns zero if the command is successfully "consumed" */
2407 static int qeth_l2_control_event(struct qeth_card *card,
2408 struct qeth_ipa_cmd *cmd)
2409 {
2410 switch (cmd->hdr.command) {
2411 case IPA_CMD_SETBRIDGEPORT_OSA:
2412 case IPA_CMD_SETBRIDGEPORT_IQD:
2413 if (cmd->data.sbp.hdr.command_code ==
2414 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
2415 qeth_bridge_state_change(card, cmd);
2416 return 0;
2417 }
2418
2419 return 1;
2420 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
2421 qeth_addr_change_event(card, cmd);
2422 return 0;
2423 default:
2424 return 1;
2425 }
2426 }
2427
2428 const struct qeth_discipline qeth_l2_discipline = {
2429 .setup = qeth_l2_probe_device,
2430 .remove = qeth_l2_remove_device,
2431 .set_online = qeth_l2_set_online,
2432 .set_offline = qeth_l2_set_offline,
2433 .do_ioctl = NULL,
2434 .control_event_handler = qeth_l2_control_event,
2435 };
2436 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
2437
2438 static int __init qeth_l2_init(void)
2439 {
2440 pr_info("register layer 2 discipline\n");
2441 refcount_set(&qeth_l2_switchdev_notify_refcnt, 0);
2442 return 0;
2443 }
2444
2445 static void __exit qeth_l2_exit(void)
2446 {
2447 pr_info("unregister layer 2 discipline\n");
2448 }
2449
2450 module_init(qeth_l2_init);
2451 module_exit(qeth_l2_exit);
2452 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2453 MODULE_DESCRIPTION("qeth layer 2 discipline");
2454 MODULE_LICENSE("GPL");
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