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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
31static 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
65static 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
74static int qeth_l2_send_setdelmac(struct qeth_card *card, const __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
91static int qeth_l2_send_setmac(struct qeth_card *card, const __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
115static 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 address %012llx is already registered on device %x\n",
125 ether_addr_to_u64(mac), CARD_DEVID(card));
126 else if (rc)
127 QETH_DBF_MESSAGE(2, "Failed to register MAC address %012llx on device %x: %d\n",
128 ether_addr_to_u64(mac), CARD_DEVID(card), rc);
129 return rc;
130}
131
132static 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 address %012llx on device %x: %d\n",
142 ether_addr_to_u64(mac), CARD_DEVID(card), rc);
143 return rc;
144}
145
146static 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
158static 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
192static 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
213static 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
229static 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
245static 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
257static 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
269static 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
280static 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
296static 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
326out:
327 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len);
328 return 0;
329}
330
331static 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
342static 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
353static 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 eth_hw_addr_set(dev, 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
388static 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
411static 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*/
432static 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
454static 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
498static 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
522static u16 qeth_l2_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
523 struct net_device *sb_dev)
524{
525 return qeth_iqd_select_queue(dev, skb, qeth_get_ether_cast_type(skb),
526 sb_dev);
527}
528
529static void qeth_l2_set_rx_mode(struct net_device *dev)
530{
531 struct qeth_card *card = dev->ml_priv;
532
533 schedule_work(&card->rx_mode_work);
534}
535
536/**
537 * qeth_l2_pnso() - perform network subchannel operation
538 * @card: qeth_card structure pointer
539 * @oc: Operation Code
540 * @cnc: Boolean Change-Notification Control
541 * @cb: Callback function will be executed for each element
542 * of the address list
543 * @priv: Pointer to pass to the callback function.
544 *
545 * Collects network information in a network address list and calls the
546 * callback function for every entry in the list. If "change-notification-
547 * control" is set, further changes in the address list will be reported
548 * via the IPA command.
549 */
550static int qeth_l2_pnso(struct qeth_card *card, u8 oc, int cnc,
551 void (*cb)(void *priv, struct chsc_pnso_naid_l2 *entry),
552 void *priv)
553{
554 struct ccw_device *ddev = CARD_DDEV(card);
555 struct chsc_pnso_area *rr;
556 u32 prev_instance = 0;
557 int isfirstblock = 1;
558 int i, size, elems;
559 int rc;
560
561 rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL);
562 if (rr == NULL)
563 return -ENOMEM;
564 do {
565 QETH_CARD_TEXT(card, 2, "PNSO");
566 /* on the first iteration, naihdr.resume_token will be zero */
567 rc = ccw_device_pnso(ddev, rr, oc, rr->naihdr.resume_token,
568 cnc);
569 if (rc)
570 continue;
571 if (cb == NULL)
572 continue;
573
574 size = rr->naihdr.naids;
575 if (size != sizeof(struct chsc_pnso_naid_l2)) {
576 WARN_ON_ONCE(1);
577 continue;
578 }
579
580 elems = (rr->response.length - sizeof(struct chsc_header) -
581 sizeof(struct chsc_pnso_naihdr)) / size;
582
583 if (!isfirstblock && (rr->naihdr.instance != prev_instance)) {
584 /* Inform the caller that they need to scrap */
585 /* the data that was already reported via cb */
586 rc = -EAGAIN;
587 break;
588 }
589 isfirstblock = 0;
590 prev_instance = rr->naihdr.instance;
591 for (i = 0; i < elems; i++)
592 (*cb)(priv, &rr->entries[i]);
593 } while ((rc == -EBUSY) || (!rc && /* list stored */
594 /* resume token is non-zero => list incomplete */
595 (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2)));
596
597 if (rc)
598 QETH_CARD_TEXT_(card, 2, "PNrp%04x", rr->response.code);
599
600 free_page((unsigned long)rr);
601 return rc;
602}
603
604static bool qeth_is_my_net_if_token(struct qeth_card *card,
605 struct net_if_token *token)
606{
607 return ((card->info.ddev_devno == token->devnum) &&
608 (card->info.cssid == token->cssid) &&
609 (card->info.iid == token->iid) &&
610 (card->info.ssid == token->ssid) &&
611 (card->info.chpid == token->chpid) &&
612 (card->info.chid == token->chid));
613}
614
615/**
616 * qeth_l2_dev2br_fdb_notify() - update fdb of master bridge
617 * @card: qeth_card structure pointer
618 * @code: event bitmask: high order bit 0x80 set to
619 * 1 - removal of an object
620 * 0 - addition of an object
621 * Object type(s):
622 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC
623 * @token: "network token" structure identifying 'physical' location
624 * of the target
625 * @addr_lnid: structure with MAC address and VLAN ID of the target
626 */
627static void qeth_l2_dev2br_fdb_notify(struct qeth_card *card, u8 code,
628 struct net_if_token *token,
629 struct mac_addr_lnid *addr_lnid)
630{
631 struct switchdev_notifier_fdb_info info = {};
632 u8 ntfy_mac[ETH_ALEN];
633
634 ether_addr_copy(ntfy_mac, addr_lnid->mac);
635 /* Ignore VLAN only changes */
636 if (!(code & IPA_ADDR_CHANGE_CODE_MACADDR))
637 return;
638 /* Ignore mcast entries */
639 if (is_multicast_ether_addr(ntfy_mac))
640 return;
641 /* Ignore my own addresses */
642 if (qeth_is_my_net_if_token(card, token))
643 return;
644
645 info.addr = ntfy_mac;
646 /* don't report VLAN IDs */
647 info.vid = 0;
648 info.added_by_user = false;
649 info.offloaded = true;
650
651 if (code & IPA_ADDR_CHANGE_CODE_REMOVAL) {
652 call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE,
653 card->dev, &info.info, NULL);
654 QETH_CARD_TEXT(card, 4, "andelmac");
655 QETH_CARD_TEXT_(card, 4,
656 "mc%012llx", ether_addr_to_u64(ntfy_mac));
657 } else {
658 call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE,
659 card->dev, &info.info, NULL);
660 QETH_CARD_TEXT(card, 4, "anaddmac");
661 QETH_CARD_TEXT_(card, 4,
662 "mc%012llx", ether_addr_to_u64(ntfy_mac));
663 }
664}
665
666static void qeth_l2_dev2br_an_set_cb(void *priv,
667 struct chsc_pnso_naid_l2 *entry)
668{
669 u8 code = IPA_ADDR_CHANGE_CODE_MACADDR;
670 struct qeth_card *card = priv;
671
672 if (entry->addr_lnid.lnid < VLAN_N_VID)
673 code |= IPA_ADDR_CHANGE_CODE_VLANID;
674 qeth_l2_dev2br_fdb_notify(card, code,
675 (struct net_if_token *)&entry->nit,
676 (struct mac_addr_lnid *)&entry->addr_lnid);
677}
678
679/**
680 * qeth_l2_dev2br_an_set() -
681 * Enable or disable 'dev to bridge network address notification'
682 * @card: qeth_card structure pointer
683 * @enable: Enable or disable 'dev to bridge network address notification'
684 *
685 * Returns negative errno-compatible error indication or 0 on success.
686 *
687 * On enable, emits a series of address notifications for all
688 * currently registered hosts.
689 */
690static int qeth_l2_dev2br_an_set(struct qeth_card *card, bool enable)
691{
692 int rc;
693
694 if (enable) {
695 QETH_CARD_TEXT(card, 2, "anseton");
696 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 1,
697 qeth_l2_dev2br_an_set_cb, card);
698 if (rc == -EAGAIN)
699 /* address notification enabled, but inconsistent
700 * addresses reported -> disable address notification
701 */
702 qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0,
703 NULL, NULL);
704 } else {
705 QETH_CARD_TEXT(card, 2, "ansetoff");
706 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL);
707 }
708
709 return rc;
710}
711
712struct qeth_l2_br2dev_event_work {
713 struct work_struct work;
714 struct net_device *br_dev;
715 struct net_device *lsync_dev;
716 struct net_device *dst_dev;
717 unsigned long event;
718 unsigned char addr[ETH_ALEN];
719};
720
721static const struct net_device_ops qeth_l2_iqd_netdev_ops;
722static const struct net_device_ops qeth_l2_osa_netdev_ops;
723
724static bool qeth_l2_must_learn(struct net_device *netdev,
725 struct net_device *dstdev)
726{
727 struct qeth_priv *priv;
728
729 priv = netdev_priv(netdev);
730 return (netdev != dstdev &&
731 (priv->brport_features & BR_LEARNING_SYNC) &&
732 !(br_port_flag_is_set(netdev, BR_ISOLATED) &&
733 br_port_flag_is_set(dstdev, BR_ISOLATED)) &&
734 (netdev->netdev_ops == &qeth_l2_iqd_netdev_ops ||
735 netdev->netdev_ops == &qeth_l2_osa_netdev_ops));
736}
737
738/**
739 * qeth_l2_br2dev_worker() - update local MACs
740 * @work: bridge to device FDB update
741 *
742 * Update local MACs of a learning_sync bridgeport so it can receive
743 * messages for a destination port.
744 * In case of an isolated learning_sync port, also update its isolated
745 * siblings.
746 */
747static void qeth_l2_br2dev_worker(struct work_struct *work)
748{
749 struct qeth_l2_br2dev_event_work *br2dev_event_work =
750 container_of(work, struct qeth_l2_br2dev_event_work, work);
751 struct net_device *lsyncdev = br2dev_event_work->lsync_dev;
752 struct net_device *dstdev = br2dev_event_work->dst_dev;
753 struct net_device *brdev = br2dev_event_work->br_dev;
754 unsigned long event = br2dev_event_work->event;
755 unsigned char *addr = br2dev_event_work->addr;
756 struct qeth_card *card = lsyncdev->ml_priv;
757 struct net_device *lowerdev;
758 struct list_head *iter;
759 int err = 0;
760
761 QETH_CARD_TEXT_(card, 4, "b2dw%04lx", event);
762 QETH_CARD_TEXT_(card, 4, "ma%012llx", ether_addr_to_u64(addr));
763
764 rcu_read_lock();
765 /* Verify preconditions are still valid: */
766 if (!netif_is_bridge_port(lsyncdev) ||
767 brdev != netdev_master_upper_dev_get_rcu(lsyncdev))
768 goto unlock;
769 if (!qeth_l2_must_learn(lsyncdev, dstdev))
770 goto unlock;
771
772 if (br_port_flag_is_set(lsyncdev, BR_ISOLATED)) {
773 /* Update lsyncdev and its isolated sibling(s): */
774 iter = &brdev->adj_list.lower;
775 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
776 while (lowerdev) {
777 if (br_port_flag_is_set(lowerdev, BR_ISOLATED)) {
778 switch (event) {
779 case SWITCHDEV_FDB_ADD_TO_DEVICE:
780 err = dev_uc_add(lowerdev, addr);
781 break;
782 case SWITCHDEV_FDB_DEL_TO_DEVICE:
783 err = dev_uc_del(lowerdev, addr);
784 break;
785 default:
786 break;
787 }
788 if (err) {
789 QETH_CARD_TEXT(card, 2, "b2derris");
790 QETH_CARD_TEXT_(card, 2,
791 "err%02lx%03d", event,
792 lowerdev->ifindex);
793 }
794 }
795 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
796 }
797 } else {
798 switch (event) {
799 case SWITCHDEV_FDB_ADD_TO_DEVICE:
800 err = dev_uc_add(lsyncdev, addr);
801 break;
802 case SWITCHDEV_FDB_DEL_TO_DEVICE:
803 err = dev_uc_del(lsyncdev, addr);
804 break;
805 default:
806 break;
807 }
808 if (err)
809 QETH_CARD_TEXT_(card, 2, "b2derr%02lx", event);
810 }
811
812unlock:
813 rcu_read_unlock();
814 dev_put(brdev);
815 dev_put(lsyncdev);
816 dev_put(dstdev);
817 kfree(br2dev_event_work);
818}
819
820static int qeth_l2_br2dev_queue_work(struct net_device *brdev,
821 struct net_device *lsyncdev,
822 struct net_device *dstdev,
823 unsigned long event,
824 const unsigned char *addr)
825{
826 struct qeth_l2_br2dev_event_work *worker_data;
827 struct qeth_card *card;
828
829 worker_data = kzalloc(sizeof(*worker_data), GFP_ATOMIC);
830 if (!worker_data)
831 return -ENOMEM;
832 INIT_WORK(&worker_data->work, qeth_l2_br2dev_worker);
833 worker_data->br_dev = brdev;
834 worker_data->lsync_dev = lsyncdev;
835 worker_data->dst_dev = dstdev;
836 worker_data->event = event;
837 ether_addr_copy(worker_data->addr, addr);
838
839 card = lsyncdev->ml_priv;
840 /* Take a reference on the sw port devices and the bridge */
841 dev_hold(brdev);
842 dev_hold(lsyncdev);
843 dev_hold(dstdev);
844 queue_work(card->event_wq, &worker_data->work);
845 return 0;
846}
847
848/* Called under rtnl_lock */
849static int qeth_l2_switchdev_event(struct notifier_block *unused,
850 unsigned long event, void *ptr)
851{
852 struct net_device *dstdev, *brdev, *lowerdev;
853 struct switchdev_notifier_fdb_info *fdb_info;
854 struct switchdev_notifier_info *info = ptr;
855 struct list_head *iter;
856 struct qeth_card *card;
857 int rc;
858
859 if (!(event == SWITCHDEV_FDB_ADD_TO_DEVICE ||
860 event == SWITCHDEV_FDB_DEL_TO_DEVICE))
861 return NOTIFY_DONE;
862
863 dstdev = switchdev_notifier_info_to_dev(info);
864 brdev = netdev_master_upper_dev_get_rcu(dstdev);
865 if (!brdev || !netif_is_bridge_master(brdev))
866 return NOTIFY_DONE;
867 fdb_info = container_of(info,
868 struct switchdev_notifier_fdb_info,
869 info);
870 iter = &brdev->adj_list.lower;
871 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
872 while (lowerdev) {
873 if (qeth_l2_must_learn(lowerdev, dstdev)) {
874 card = lowerdev->ml_priv;
875 QETH_CARD_TEXT_(card, 4, "b2dqw%03lx", event);
876 rc = qeth_l2_br2dev_queue_work(brdev, lowerdev,
877 dstdev, event,
878 fdb_info->addr);
879 if (rc) {
880 QETH_CARD_TEXT(card, 2, "b2dqwerr");
881 return NOTIFY_BAD;
882 }
883 }
884 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
885 }
886 return NOTIFY_DONE;
887}
888
889static struct notifier_block qeth_l2_sw_notifier = {
890 .notifier_call = qeth_l2_switchdev_event,
891};
892
893static refcount_t qeth_l2_switchdev_notify_refcnt;
894
895/* Called under rtnl_lock */
896static void qeth_l2_br2dev_get(void)
897{
898 int rc;
899
900 if (!refcount_inc_not_zero(&qeth_l2_switchdev_notify_refcnt)) {
901 rc = register_switchdev_notifier(&qeth_l2_sw_notifier);
902 if (rc) {
903 QETH_DBF_MESSAGE(2,
904 "failed to register qeth_l2_sw_notifier: %d\n",
905 rc);
906 } else {
907 refcount_set(&qeth_l2_switchdev_notify_refcnt, 1);
908 QETH_DBF_MESSAGE(2, "qeth_l2_sw_notifier registered\n");
909 }
910 }
911 QETH_DBF_TEXT_(SETUP, 2, "b2d+%04d",
912 qeth_l2_switchdev_notify_refcnt.refs.counter);
913}
914
915/* Called under rtnl_lock */
916static void qeth_l2_br2dev_put(void)
917{
918 int rc;
919
920 if (refcount_dec_and_test(&qeth_l2_switchdev_notify_refcnt)) {
921 rc = unregister_switchdev_notifier(&qeth_l2_sw_notifier);
922 if (rc) {
923 QETH_DBF_MESSAGE(2,
924 "failed to unregister qeth_l2_sw_notifier: %d\n",
925 rc);
926 } else {
927 QETH_DBF_MESSAGE(2,
928 "qeth_l2_sw_notifier unregistered\n");
929 }
930 }
931 QETH_DBF_TEXT_(SETUP, 2, "b2d-%04d",
932 qeth_l2_switchdev_notify_refcnt.refs.counter);
933}
934
935static int qeth_l2_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
936 struct net_device *dev, u32 filter_mask,
937 int nlflags)
938{
939 struct qeth_priv *priv = netdev_priv(dev);
940 struct qeth_card *card = dev->ml_priv;
941 u16 mode = BRIDGE_MODE_UNDEF;
942
943 /* Do not even show qeth devs that cannot do bridge_setlink */
944 if (!priv->brport_hw_features || !netif_device_present(dev) ||
945 qeth_bridgeport_is_in_use(card))
946 return -EOPNOTSUPP;
947
948 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
949 mode, priv->brport_features,
950 priv->brport_hw_features,
951 nlflags, filter_mask, NULL);
952}
953
954static const struct nla_policy qeth_brport_policy[IFLA_BRPORT_MAX + 1] = {
955 [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 },
956};
957
958/**
959 * qeth_l2_bridge_setlink() - set bridgeport attributes
960 * @dev: netdevice
961 * @nlh: netlink message header
962 * @flags: bridge flags (here: BRIDGE_FLAGS_SELF)
963 * @extack: extended ACK report struct
964 *
965 * Called under rtnl_lock
966 */
967static int qeth_l2_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
968 u16 flags, struct netlink_ext_ack *extack)
969{
970 struct qeth_priv *priv = netdev_priv(dev);
971 struct nlattr *bp_tb[IFLA_BRPORT_MAX + 1];
972 struct qeth_card *card = dev->ml_priv;
973 struct nlattr *attr, *nested_attr;
974 bool enable, has_protinfo = false;
975 int rem1, rem2;
976 int rc;
977
978 if (!netif_device_present(dev))
979 return -ENODEV;
980
981 nlmsg_for_each_attr(attr, nlh, sizeof(struct ifinfomsg), rem1) {
982 if (nla_type(attr) == IFLA_PROTINFO) {
983 rc = nla_parse_nested(bp_tb, IFLA_BRPORT_MAX, attr,
984 qeth_brport_policy, extack);
985 if (rc)
986 return rc;
987 has_protinfo = true;
988 } else if (nla_type(attr) == IFLA_AF_SPEC) {
989 nla_for_each_nested(nested_attr, attr, rem2) {
990 if (nla_type(nested_attr) == IFLA_BRIDGE_FLAGS)
991 continue;
992 NL_SET_ERR_MSG_ATTR(extack, nested_attr,
993 "Unsupported attribute");
994 return -EINVAL;
995 }
996 } else {
997 NL_SET_ERR_MSG_ATTR(extack, attr, "Unsupported attribute");
998 return -EINVAL;
999 }
1000 }
1001 if (!has_protinfo)
1002 return 0;
1003 if (!bp_tb[IFLA_BRPORT_LEARNING_SYNC])
1004 return -EINVAL;
1005 if (!(priv->brport_hw_features & BR_LEARNING_SYNC)) {
1006 NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC],
1007 "Operation not supported by HW");
1008 return -EOPNOTSUPP;
1009 }
1010 if (!IS_ENABLED(CONFIG_NET_SWITCHDEV)) {
1011 NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC],
1012 "Requires NET_SWITCHDEV");
1013 return -EOPNOTSUPP;
1014 }
1015 enable = !!nla_get_u8(bp_tb[IFLA_BRPORT_LEARNING_SYNC]);
1016
1017 if (enable == !!(priv->brport_features & BR_LEARNING_SYNC))
1018 return 0;
1019
1020 mutex_lock(&card->sbp_lock);
1021 /* do not change anything if BridgePort is enabled */
1022 if (qeth_bridgeport_is_in_use(card)) {
1023 NL_SET_ERR_MSG(extack, "n/a (BridgePort)");
1024 rc = -EBUSY;
1025 } else if (enable) {
1026 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1027 rc = qeth_l2_dev2br_an_set(card, true);
1028 if (rc) {
1029 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1030 } else {
1031 priv->brport_features |= BR_LEARNING_SYNC;
1032 qeth_l2_br2dev_get();
1033 }
1034 } else {
1035 rc = qeth_l2_dev2br_an_set(card, false);
1036 if (!rc) {
1037 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1038 priv->brport_features ^= BR_LEARNING_SYNC;
1039 qeth_l2_dev2br_fdb_flush(card);
1040 qeth_l2_br2dev_put();
1041 }
1042 }
1043 mutex_unlock(&card->sbp_lock);
1044
1045 return rc;
1046}
1047
1048static const struct net_device_ops qeth_l2_iqd_netdev_ops = {
1049 .ndo_open = qeth_open,
1050 .ndo_stop = qeth_stop,
1051 .ndo_get_stats64 = qeth_get_stats64,
1052 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1053 .ndo_features_check = qeth_features_check,
1054 .ndo_select_queue = qeth_l2_iqd_select_queue,
1055 .ndo_validate_addr = qeth_l2_validate_addr,
1056 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1057 .ndo_eth_ioctl = qeth_do_ioctl,
1058 .ndo_siocdevprivate = qeth_siocdevprivate,
1059 .ndo_set_mac_address = qeth_l2_set_mac_address,
1060 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1061 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1062 .ndo_tx_timeout = qeth_tx_timeout,
1063 .ndo_fix_features = qeth_fix_features,
1064 .ndo_set_features = qeth_set_features,
1065 .ndo_bridge_getlink = qeth_l2_bridge_getlink,
1066 .ndo_bridge_setlink = qeth_l2_bridge_setlink,
1067};
1068
1069static const struct net_device_ops qeth_l2_osa_netdev_ops = {
1070 .ndo_open = qeth_open,
1071 .ndo_stop = qeth_stop,
1072 .ndo_get_stats64 = qeth_get_stats64,
1073 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1074 .ndo_features_check = qeth_features_check,
1075 .ndo_select_queue = qeth_osa_select_queue,
1076 .ndo_validate_addr = qeth_l2_validate_addr,
1077 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1078 .ndo_eth_ioctl = qeth_do_ioctl,
1079 .ndo_siocdevprivate = qeth_siocdevprivate,
1080 .ndo_set_mac_address = qeth_l2_set_mac_address,
1081 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1082 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1083 .ndo_tx_timeout = qeth_tx_timeout,
1084 .ndo_fix_features = qeth_fix_features,
1085 .ndo_set_features = qeth_set_features,
1086};
1087
1088static int qeth_l2_setup_netdev(struct qeth_card *card)
1089{
1090 card->dev->netdev_ops = IS_IQD(card) ? &qeth_l2_iqd_netdev_ops :
1091 &qeth_l2_osa_netdev_ops;
1092 card->dev->needed_headroom = sizeof(struct qeth_hdr);
1093 card->dev->priv_flags |= IFF_UNICAST_FLT;
1094
1095 if (IS_OSM(card)) {
1096 card->dev->features |= NETIF_F_VLAN_CHALLENGED;
1097 } else {
1098 if (!IS_VM_NIC(card))
1099 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1100 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1101 }
1102
1103 if (IS_OSD(card) && !IS_VM_NIC(card)) {
1104 card->dev->features |= NETIF_F_SG;
1105 /* OSA 3S and earlier has no RX/TX support */
1106 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1107 card->dev->hw_features |= NETIF_F_IP_CSUM;
1108 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1109 }
1110 }
1111 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1112 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1113 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1114 }
1115 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) ||
1116 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) {
1117 card->dev->hw_features |= NETIF_F_RXCSUM;
1118 card->dev->vlan_features |= NETIF_F_RXCSUM;
1119 }
1120 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1121 card->dev->hw_features |= NETIF_F_TSO;
1122 card->dev->vlan_features |= NETIF_F_TSO;
1123 }
1124 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1125 card->dev->hw_features |= NETIF_F_TSO6;
1126 card->dev->vlan_features |= NETIF_F_TSO6;
1127 }
1128
1129 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1130 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso);
1131 netif_keep_dst(card->dev);
1132 netif_set_tso_max_size(card->dev,
1133 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1));
1134 }
1135
1136 netif_napi_add(card->dev, &card->napi, qeth_poll);
1137 return register_netdev(card->dev);
1138}
1139
1140static void qeth_l2_trace_features(struct qeth_card *card)
1141{
1142 /* Set BridgePort features */
1143 QETH_CARD_TEXT(card, 2, "featuSBP");
1144 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
1145 sizeof(card->options.sbp.supported_funcs));
1146 /* VNIC Characteristics features */
1147 QETH_CARD_TEXT(card, 2, "feaVNICC");
1148 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
1149 sizeof(card->options.vnicc.sup_chars));
1150}
1151
1152static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card)
1153{
1154 if (!card->options.sbp.reflect_promisc &&
1155 card->options.sbp.role != QETH_SBP_ROLE_NONE) {
1156 /* Conditional to avoid spurious error messages */
1157 qeth_bridgeport_setrole(card, card->options.sbp.role);
1158 /* Let the callback function refresh the stored role value. */
1159 qeth_bridgeport_query_ports(card, &card->options.sbp.role,
1160 NULL);
1161 }
1162 if (card->options.sbp.hostnotification) {
1163 if (qeth_bridgeport_an_set(card, 1))
1164 card->options.sbp.hostnotification = 0;
1165 }
1166}
1167
1168/**
1169 * qeth_l2_detect_dev2br_support() -
1170 * Detect whether this card supports 'dev to bridge fdb network address
1171 * change notification' and thus can support the learning_sync bridgeport
1172 * attribute
1173 * @card: qeth_card structure pointer
1174 */
1175static void qeth_l2_detect_dev2br_support(struct qeth_card *card)
1176{
1177 struct qeth_priv *priv = netdev_priv(card->dev);
1178 bool dev2br_supported;
1179
1180 QETH_CARD_TEXT(card, 2, "d2brsup");
1181 if (!IS_IQD(card))
1182 return;
1183
1184 /* dev2br requires valid cssid,iid,chid */
1185 dev2br_supported = card->info.ids_valid &&
1186 css_general_characteristics.enarf;
1187 QETH_CARD_TEXT_(card, 2, "D2Bsup%02x", dev2br_supported);
1188
1189 if (dev2br_supported)
1190 priv->brport_hw_features |= BR_LEARNING_SYNC;
1191 else
1192 priv->brport_hw_features &= ~BR_LEARNING_SYNC;
1193}
1194
1195static void qeth_l2_enable_brport_features(struct qeth_card *card)
1196{
1197 struct qeth_priv *priv = netdev_priv(card->dev);
1198 int rc;
1199
1200 if (priv->brport_features & BR_LEARNING_SYNC) {
1201 if (priv->brport_hw_features & BR_LEARNING_SYNC) {
1202 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1203 rc = qeth_l2_dev2br_an_set(card, true);
1204 if (rc == -EAGAIN) {
1205 /* Recoverable error, retry once */
1206 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1207 qeth_l2_dev2br_fdb_flush(card);
1208 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1209 rc = qeth_l2_dev2br_an_set(card, true);
1210 }
1211 if (rc) {
1212 netdev_err(card->dev,
1213 "failed to enable bridge learning_sync: %d\n",
1214 rc);
1215 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1216 qeth_l2_dev2br_fdb_flush(card);
1217 priv->brport_features ^= BR_LEARNING_SYNC;
1218 }
1219 } else {
1220 dev_warn(&card->gdev->dev,
1221 "bridge learning_sync not supported\n");
1222 priv->brport_features ^= BR_LEARNING_SYNC;
1223 }
1224 }
1225}
1226
1227/* SETBRIDGEPORT support, async notifications */
1228
1229enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1230
1231/**
1232 * qeth_bridge_emit_host_event() - bridgeport address change notification
1233 * @card: qeth_card structure pointer, for udev events.
1234 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1235 * and reset token and addr_lnid are unused and may be NULL.
1236 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1237 * object, 0 - addition of an object.
1238 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1239 * @token: "network token" structure identifying physical address of the port.
1240 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1241 *
1242 * This function is called when registrations and deregistrations are
1243 * reported by the hardware, and also when notifications are enabled -
1244 * for all currently registered addresses.
1245 */
1246static void qeth_bridge_emit_host_event(struct qeth_card *card,
1247 enum qeth_an_event_type evtype,
1248 u8 code,
1249 struct net_if_token *token,
1250 struct mac_addr_lnid *addr_lnid)
1251{
1252 char str[7][32];
1253 char *env[8];
1254 int i = 0;
1255
1256 switch (evtype) {
1257 case anev_reg_unreg:
1258 scnprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1259 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1260 ? "deregister" : "register");
1261 env[i] = str[i]; i++;
1262 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1263 scnprintf(str[i], sizeof(str[i]), "VLAN=%d",
1264 addr_lnid->lnid);
1265 env[i] = str[i]; i++;
1266 }
1267 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1268 scnprintf(str[i], sizeof(str[i]), "MAC=%pM",
1269 addr_lnid->mac);
1270 env[i] = str[i]; i++;
1271 }
1272 scnprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1273 token->cssid, token->ssid, token->devnum);
1274 env[i] = str[i]; i++;
1275 scnprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1276 env[i] = str[i]; i++;
1277 scnprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1278 token->chpid);
1279 env[i] = str[i]; i++;
1280 scnprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x",
1281 token->chid);
1282 env[i] = str[i]; i++;
1283 break;
1284 case anev_abort:
1285 scnprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1286 env[i] = str[i]; i++;
1287 break;
1288 case anev_reset:
1289 scnprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1290 env[i] = str[i]; i++;
1291 break;
1292 }
1293 env[i] = NULL;
1294 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1295}
1296
1297struct qeth_bridge_state_data {
1298 struct work_struct worker;
1299 struct qeth_card *card;
1300 u8 role;
1301 u8 state;
1302};
1303
1304static void qeth_bridge_state_change_worker(struct work_struct *work)
1305{
1306 struct qeth_bridge_state_data *data =
1307 container_of(work, struct qeth_bridge_state_data, worker);
1308 char env_locrem[32];
1309 char env_role[32];
1310 char env_state[32];
1311 char *env[] = {
1312 env_locrem,
1313 env_role,
1314 env_state,
1315 NULL
1316 };
1317
1318 scnprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1319 scnprintf(env_role, sizeof(env_role), "ROLE=%s",
1320 (data->role == QETH_SBP_ROLE_NONE) ? "none" :
1321 (data->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1322 (data->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1323 "<INVALID>");
1324 scnprintf(env_state, sizeof(env_state), "STATE=%s",
1325 (data->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1326 (data->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1327 (data->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1328 "<INVALID>");
1329 kobject_uevent_env(&data->card->gdev->dev.kobj,
1330 KOBJ_CHANGE, env);
1331 kfree(data);
1332}
1333
1334static void qeth_bridge_state_change(struct qeth_card *card,
1335 struct qeth_ipa_cmd *cmd)
1336{
1337 struct qeth_sbp_port_data *qports = &cmd->data.sbp.data.port_data;
1338 struct qeth_bridge_state_data *data;
1339
1340 QETH_CARD_TEXT(card, 2, "brstchng");
1341 if (qports->num_entries == 0) {
1342 QETH_CARD_TEXT(card, 2, "BPempty");
1343 return;
1344 }
1345 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1346 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1347 return;
1348 }
1349
1350 data = kzalloc(sizeof(*data), GFP_ATOMIC);
1351 if (!data) {
1352 QETH_CARD_TEXT(card, 2, "BPSalloc");
1353 return;
1354 }
1355 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1356 data->card = card;
1357 /* Information for the local port: */
1358 data->role = qports->entry[0].role;
1359 data->state = qports->entry[0].state;
1360
1361 queue_work(card->event_wq, &data->worker);
1362}
1363
1364struct qeth_addr_change_data {
1365 struct delayed_work dwork;
1366 struct qeth_card *card;
1367 struct qeth_ipacmd_addr_change ac_event;
1368};
1369
1370static void qeth_l2_dev2br_worker(struct work_struct *work)
1371{
1372 struct delayed_work *dwork = to_delayed_work(work);
1373 struct qeth_addr_change_data *data;
1374 struct qeth_card *card;
1375 struct qeth_priv *priv;
1376 unsigned int i;
1377 int rc;
1378
1379 data = container_of(dwork, struct qeth_addr_change_data, dwork);
1380 card = data->card;
1381 priv = netdev_priv(card->dev);
1382
1383 QETH_CARD_TEXT(card, 4, "dev2brew");
1384
1385 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE)
1386 goto free;
1387
1388 if (data->ac_event.lost_event_mask) {
1389 /* Potential re-config in progress, try again later: */
1390 if (!rtnl_trylock()) {
1391 queue_delayed_work(card->event_wq, dwork,
1392 msecs_to_jiffies(100));
1393 return;
1394 }
1395
1396 if (!netif_device_present(card->dev)) {
1397 rtnl_unlock();
1398 goto free;
1399 }
1400
1401 QETH_DBF_MESSAGE(3,
1402 "Address change notification overflow on device %x\n",
1403 CARD_DEVID(card));
1404 /* Card fdb and bridge fdb are out of sync, card has stopped
1405 * notifications (no need to drain_workqueue). Purge all
1406 * 'extern_learn' entries from the parent bridge and restart
1407 * the notifications.
1408 */
1409 qeth_l2_dev2br_fdb_flush(card);
1410 rc = qeth_l2_dev2br_an_set(card, true);
1411 if (rc) {
1412 /* TODO: if we want to retry after -EAGAIN, be
1413 * aware there could be stale entries in the
1414 * workqueue now, that need to be drained.
1415 * For now we give up:
1416 */
1417 netdev_err(card->dev,
1418 "bridge learning_sync failed to recover: %d\n",
1419 rc);
1420 WRITE_ONCE(card->info.pnso_mode,
1421 QETH_PNSO_NONE);
1422 /* To remove fdb entries reported by an_set: */
1423 qeth_l2_dev2br_fdb_flush(card);
1424 priv->brport_features ^= BR_LEARNING_SYNC;
1425 } else {
1426 QETH_DBF_MESSAGE(3,
1427 "Address Notification resynced on device %x\n",
1428 CARD_DEVID(card));
1429 }
1430
1431 rtnl_unlock();
1432 } else {
1433 for (i = 0; i < data->ac_event.num_entries; i++) {
1434 struct qeth_ipacmd_addr_change_entry *entry =
1435 &data->ac_event.entry[i];
1436 qeth_l2_dev2br_fdb_notify(card,
1437 entry->change_code,
1438 &entry->token,
1439 &entry->addr_lnid);
1440 }
1441 }
1442
1443free:
1444 kfree(data);
1445}
1446
1447static void qeth_addr_change_event_worker(struct work_struct *work)
1448{
1449 struct delayed_work *dwork = to_delayed_work(work);
1450 struct qeth_addr_change_data *data;
1451 struct qeth_card *card;
1452 int i;
1453
1454 data = container_of(dwork, struct qeth_addr_change_data, dwork);
1455 card = data->card;
1456
1457 QETH_CARD_TEXT(data->card, 4, "adrchgew");
1458
1459 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE)
1460 goto free;
1461
1462 if (data->ac_event.lost_event_mask) {
1463 /* Potential re-config in progress, try again later: */
1464 if (!mutex_trylock(&card->sbp_lock)) {
1465 queue_delayed_work(card->event_wq, dwork,
1466 msecs_to_jiffies(100));
1467 return;
1468 }
1469
1470 dev_info(&data->card->gdev->dev,
1471 "Address change notification stopped on %s (%s)\n",
1472 netdev_name(card->dev),
1473 (data->ac_event.lost_event_mask == 0x01)
1474 ? "Overflow"
1475 : (data->ac_event.lost_event_mask == 0x02)
1476 ? "Bridge port state change"
1477 : "Unknown reason");
1478
1479 data->card->options.sbp.hostnotification = 0;
1480 card->info.pnso_mode = QETH_PNSO_NONE;
1481 mutex_unlock(&data->card->sbp_lock);
1482 qeth_bridge_emit_host_event(data->card, anev_abort,
1483 0, NULL, NULL);
1484 } else
1485 for (i = 0; i < data->ac_event.num_entries; i++) {
1486 struct qeth_ipacmd_addr_change_entry *entry =
1487 &data->ac_event.entry[i];
1488 qeth_bridge_emit_host_event(data->card,
1489 anev_reg_unreg,
1490 entry->change_code,
1491 &entry->token,
1492 &entry->addr_lnid);
1493 }
1494
1495free:
1496 kfree(data);
1497}
1498
1499static void qeth_addr_change_event(struct qeth_card *card,
1500 struct qeth_ipa_cmd *cmd)
1501{
1502 struct qeth_ipacmd_addr_change *hostevs =
1503 &cmd->data.addrchange;
1504 struct qeth_addr_change_data *data;
1505 int extrasize;
1506
1507 if (card->info.pnso_mode == QETH_PNSO_NONE)
1508 return;
1509
1510 QETH_CARD_TEXT(card, 4, "adrchgev");
1511 if (cmd->hdr.return_code != 0x0000) {
1512 if (cmd->hdr.return_code == 0x0010) {
1513 if (hostevs->lost_event_mask == 0x00)
1514 hostevs->lost_event_mask = 0xff;
1515 } else {
1516 QETH_CARD_TEXT_(card, 2, "ACHN%04x",
1517 cmd->hdr.return_code);
1518 return;
1519 }
1520 }
1521 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1522 hostevs->num_entries;
1523 data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize,
1524 GFP_ATOMIC);
1525 if (!data) {
1526 QETH_CARD_TEXT(card, 2, "ACNalloc");
1527 return;
1528 }
1529 if (card->info.pnso_mode == QETH_PNSO_BRIDGEPORT)
1530 INIT_DELAYED_WORK(&data->dwork, qeth_addr_change_event_worker);
1531 else
1532 INIT_DELAYED_WORK(&data->dwork, qeth_l2_dev2br_worker);
1533 data->card = card;
1534 data->ac_event = *hostevs;
1535 memcpy(data->ac_event.entry, hostevs->entry, extrasize);
1536 queue_delayed_work(card->event_wq, &data->dwork, 0);
1537}
1538
1539/* SETBRIDGEPORT support; sending commands */
1540
1541struct _qeth_sbp_cbctl {
1542 union {
1543 u32 supported;
1544 struct {
1545 enum qeth_sbp_roles *role;
1546 enum qeth_sbp_states *state;
1547 } qports;
1548 } data;
1549};
1550
1551static int qeth_bridgeport_makerc(struct qeth_card *card,
1552 struct qeth_ipa_cmd *cmd)
1553{
1554 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp;
1555 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code;
1556 u16 ipa_rc = cmd->hdr.return_code;
1557 u16 sbp_rc = sbp->hdr.return_code;
1558 int rc;
1559
1560 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS)
1561 return 0;
1562
1563 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) ||
1564 (!IS_IQD(card) && ipa_rc == sbp_rc)) {
1565 switch (sbp_rc) {
1566 case IPA_RC_SUCCESS:
1567 rc = 0;
1568 break;
1569 case IPA_RC_L2_UNSUPPORTED_CMD:
1570 case IPA_RC_UNSUPPORTED_COMMAND:
1571 rc = -EOPNOTSUPP;
1572 break;
1573 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1574 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1575 rc = -ENODEV; /* maybe not the best code here? */
1576 dev_err(&card->gdev->dev,
1577 "The device is not configured as a Bridge Port\n");
1578 break;
1579 case IPA_RC_SBP_OSA_OS_MISMATCH:
1580 case IPA_RC_SBP_IQD_OS_MISMATCH:
1581 rc = -EPERM;
1582 dev_err(&card->gdev->dev,
1583 "A Bridge Port is already configured by a different operating system\n");
1584 break;
1585 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1586 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1587 switch (setcmd) {
1588 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1589 rc = -EEXIST;
1590 dev_err(&card->gdev->dev,
1591 "The LAN already has a primary Bridge Port\n");
1592 break;
1593 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1594 rc = -EBUSY;
1595 dev_err(&card->gdev->dev,
1596 "The device is already a primary Bridge Port\n");
1597 break;
1598 default:
1599 rc = -EIO;
1600 }
1601 break;
1602 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1603 case IPA_RC_SBP_IQD_CURRENT_SECOND:
1604 rc = -EBUSY;
1605 dev_err(&card->gdev->dev,
1606 "The device is already a secondary Bridge Port\n");
1607 break;
1608 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1609 case IPA_RC_SBP_IQD_LIMIT_SECOND:
1610 rc = -EEXIST;
1611 dev_err(&card->gdev->dev,
1612 "The LAN cannot have more secondary Bridge Ports\n");
1613 break;
1614 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1615 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1616 rc = -EBUSY;
1617 dev_err(&card->gdev->dev,
1618 "The device is already a primary Bridge Port\n");
1619 break;
1620 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1621 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1622 rc = -EACCES;
1623 dev_err(&card->gdev->dev,
1624 "The device is not authorized to be a Bridge Port\n");
1625 break;
1626 default:
1627 rc = -EIO;
1628 }
1629 } else {
1630 switch (ipa_rc) {
1631 case IPA_RC_NOTSUPP:
1632 rc = -EOPNOTSUPP;
1633 break;
1634 case IPA_RC_UNSUPPORTED_COMMAND:
1635 rc = -EOPNOTSUPP;
1636 break;
1637 default:
1638 rc = -EIO;
1639 }
1640 }
1641
1642 if (rc) {
1643 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc);
1644 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc);
1645 }
1646 return rc;
1647}
1648
1649static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1650 enum qeth_ipa_sbp_cmd sbp_cmd,
1651 unsigned int data_length)
1652{
1653 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD :
1654 IPA_CMD_SETBRIDGEPORT_OSA;
1655 struct qeth_ipacmd_sbp_hdr *hdr;
1656 struct qeth_cmd_buffer *iob;
1657
1658 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE,
1659 data_length +
1660 offsetof(struct qeth_ipacmd_setbridgeport,
1661 data));
1662 if (!iob)
1663 return iob;
1664
1665 hdr = &__ipa_cmd(iob)->data.sbp.hdr;
1666 hdr->cmdlength = sizeof(*hdr) + data_length;
1667 hdr->command_code = sbp_cmd;
1668 hdr->used_total = 1;
1669 hdr->seq_no = 1;
1670 return iob;
1671}
1672
1673static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1674 struct qeth_reply *reply, unsigned long data)
1675{
1676 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1677 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1678 int rc;
1679
1680 QETH_CARD_TEXT(card, 2, "brqsupcb");
1681 rc = qeth_bridgeport_makerc(card, cmd);
1682 if (rc)
1683 return rc;
1684
1685 cbctl->data.supported =
1686 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1687 return 0;
1688}
1689
1690/**
1691 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1692 * @card: qeth_card structure pointer.
1693 *
1694 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1695 * strucutre: card->options.sbp.supported_funcs.
1696 */
1697static void qeth_bridgeport_query_support(struct qeth_card *card)
1698{
1699 struct qeth_cmd_buffer *iob;
1700 struct _qeth_sbp_cbctl cbctl;
1701
1702 QETH_CARD_TEXT(card, 2, "brqsuppo");
1703 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1704 SBP_DATA_SIZEOF(query_cmds_supp));
1705 if (!iob)
1706 return;
1707
1708 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1709 &cbctl)) {
1710 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1711 card->options.sbp.supported_funcs = 0;
1712 return;
1713 }
1714 card->options.sbp.supported_funcs = cbctl.data.supported;
1715}
1716
1717static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1718 struct qeth_reply *reply, unsigned long data)
1719{
1720 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1721 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1722 struct qeth_sbp_port_data *qports;
1723 int rc;
1724
1725 QETH_CARD_TEXT(card, 2, "brqprtcb");
1726 rc = qeth_bridgeport_makerc(card, cmd);
1727 if (rc)
1728 return rc;
1729
1730 qports = &cmd->data.sbp.data.port_data;
1731 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1732 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1733 return -EINVAL;
1734 }
1735 /* first entry contains the state of the local port */
1736 if (qports->num_entries > 0) {
1737 if (cbctl->data.qports.role)
1738 *cbctl->data.qports.role = qports->entry[0].role;
1739 if (cbctl->data.qports.state)
1740 *cbctl->data.qports.state = qports->entry[0].state;
1741 }
1742 return 0;
1743}
1744
1745/**
1746 * qeth_bridgeport_query_ports() - query local bridgeport status.
1747 * @card: qeth_card structure pointer.
1748 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1749 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1750 *
1751 * Returns negative errno-compatible error indication or 0 on success.
1752 *
1753 * 'role' and 'state' are not updated in case of hardware operation failure.
1754 */
1755int qeth_bridgeport_query_ports(struct qeth_card *card,
1756 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1757{
1758 struct qeth_cmd_buffer *iob;
1759 struct _qeth_sbp_cbctl cbctl = {
1760 .data = {
1761 .qports = {
1762 .role = role,
1763 .state = state,
1764 },
1765 },
1766 };
1767
1768 QETH_CARD_TEXT(card, 2, "brqports");
1769 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1770 return -EOPNOTSUPP;
1771 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1772 if (!iob)
1773 return -ENOMEM;
1774
1775 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1776 &cbctl);
1777}
1778
1779static int qeth_bridgeport_set_cb(struct qeth_card *card,
1780 struct qeth_reply *reply, unsigned long data)
1781{
1782 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1783
1784 QETH_CARD_TEXT(card, 2, "brsetrcb");
1785 return qeth_bridgeport_makerc(card, cmd);
1786}
1787
1788/**
1789 * qeth_bridgeport_setrole() - Assign primary role to the port.
1790 * @card: qeth_card structure pointer.
1791 * @role: Role to assign.
1792 *
1793 * Returns negative errno-compatible error indication or 0 on success.
1794 */
1795int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1796{
1797 struct qeth_cmd_buffer *iob;
1798 enum qeth_ipa_sbp_cmd setcmd;
1799 unsigned int cmdlength = 0;
1800
1801 QETH_CARD_TEXT(card, 2, "brsetrol");
1802 switch (role) {
1803 case QETH_SBP_ROLE_NONE:
1804 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1805 break;
1806 case QETH_SBP_ROLE_PRIMARY:
1807 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1808 cmdlength = SBP_DATA_SIZEOF(set_primary);
1809 break;
1810 case QETH_SBP_ROLE_SECONDARY:
1811 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1812 break;
1813 default:
1814 return -EINVAL;
1815 }
1816 if (!(card->options.sbp.supported_funcs & setcmd))
1817 return -EOPNOTSUPP;
1818 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1819 if (!iob)
1820 return -ENOMEM;
1821
1822 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL);
1823}
1824
1825static void qeth_bridgeport_an_set_cb(void *priv,
1826 struct chsc_pnso_naid_l2 *entry)
1827{
1828 struct qeth_card *card = (struct qeth_card *)priv;
1829 u8 code;
1830
1831 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1832 if (entry->addr_lnid.lnid < VLAN_N_VID)
1833 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1834 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1835 (struct net_if_token *)&entry->nit,
1836 (struct mac_addr_lnid *)&entry->addr_lnid);
1837}
1838
1839/**
1840 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1841 * @card: qeth_card structure pointer.
1842 * @enable: 0 - disable, non-zero - enable notifications
1843 *
1844 * Returns negative errno-compatible error indication or 0 on success.
1845 *
1846 * On enable, emits a series of address notifications udev events for all
1847 * currently registered hosts.
1848 */
1849int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1850{
1851 int rc;
1852
1853 if (!card->options.sbp.supported_funcs)
1854 return -EOPNOTSUPP;
1855
1856 if (enable) {
1857 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1858 qeth_l2_set_pnso_mode(card, QETH_PNSO_BRIDGEPORT);
1859 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 1,
1860 qeth_bridgeport_an_set_cb, card);
1861 if (rc)
1862 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1863 } else {
1864 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 0, NULL, NULL);
1865 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1866 }
1867 return rc;
1868}
1869
1870/* VNIC Characteristics support */
1871
1872/* handle VNICC IPA command return codes; convert to error codes */
1873static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc)
1874{
1875 int rc;
1876
1877 switch (ipa_rc) {
1878 case IPA_RC_SUCCESS:
1879 return ipa_rc;
1880 case IPA_RC_L2_UNSUPPORTED_CMD:
1881 case IPA_RC_NOTSUPP:
1882 rc = -EOPNOTSUPP;
1883 break;
1884 case IPA_RC_VNICC_OOSEQ:
1885 rc = -EALREADY;
1886 break;
1887 case IPA_RC_VNICC_VNICBP:
1888 rc = -EBUSY;
1889 break;
1890 case IPA_RC_L2_ADDR_TABLE_FULL:
1891 rc = -ENOSPC;
1892 break;
1893 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
1894 rc = -EACCES;
1895 break;
1896 default:
1897 rc = -EIO;
1898 }
1899
1900 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
1901 return rc;
1902}
1903
1904/* generic VNICC request call back */
1905static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
1906 struct qeth_reply *reply,
1907 unsigned long data)
1908{
1909 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1910 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
1911 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command;
1912
1913 QETH_CARD_TEXT(card, 2, "vniccrcb");
1914 if (cmd->hdr.return_code)
1915 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code);
1916 /* return results to caller */
1917 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported;
1918 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled;
1919
1920 if (sub_cmd == IPA_VNICC_QUERY_CMDS)
1921 *(u32 *)reply->param = rep->data.query_cmds.sup_cmds;
1922 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT)
1923 *(u32 *)reply->param = rep->data.getset_timeout.timeout;
1924
1925 return 0;
1926}
1927
1928static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card,
1929 u32 vnicc_cmd,
1930 unsigned int data_length)
1931{
1932 struct qeth_ipacmd_vnicc_hdr *hdr;
1933 struct qeth_cmd_buffer *iob;
1934
1935 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE,
1936 data_length +
1937 offsetof(struct qeth_ipacmd_vnicc, data));
1938 if (!iob)
1939 return NULL;
1940
1941 hdr = &__ipa_cmd(iob)->data.vnicc.hdr;
1942 hdr->data_length = sizeof(*hdr) + data_length;
1943 hdr->sub_command = vnicc_cmd;
1944 return iob;
1945}
1946
1947/* VNICC query VNIC characteristics request */
1948static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
1949{
1950 struct qeth_cmd_buffer *iob;
1951
1952 QETH_CARD_TEXT(card, 2, "vniccqch");
1953 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0);
1954 if (!iob)
1955 return -ENOMEM;
1956
1957 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1958}
1959
1960/* VNICC query sub commands request */
1961static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
1962 u32 *sup_cmds)
1963{
1964 struct qeth_cmd_buffer *iob;
1965
1966 QETH_CARD_TEXT(card, 2, "vniccqcm");
1967 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS,
1968 VNICC_DATA_SIZEOF(query_cmds));
1969 if (!iob)
1970 return -ENOMEM;
1971
1972 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char;
1973
1974 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds);
1975}
1976
1977/* VNICC enable/disable characteristic request */
1978static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
1979 u32 cmd)
1980{
1981 struct qeth_cmd_buffer *iob;
1982
1983 QETH_CARD_TEXT(card, 2, "vniccedc");
1984 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char));
1985 if (!iob)
1986 return -ENOMEM;
1987
1988 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char;
1989
1990 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1991}
1992
1993/* VNICC get/set timeout for characteristic request */
1994static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
1995 u32 cmd, u32 *timeout)
1996{
1997 struct qeth_vnicc_getset_timeout *getset_timeout;
1998 struct qeth_cmd_buffer *iob;
1999
2000 QETH_CARD_TEXT(card, 2, "vniccgst");
2001 iob = qeth_l2_vnicc_build_cmd(card, cmd,
2002 VNICC_DATA_SIZEOF(getset_timeout));
2003 if (!iob)
2004 return -ENOMEM;
2005
2006 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout;
2007 getset_timeout->vnic_char = vnicc;
2008
2009 if (cmd == IPA_VNICC_SET_TIMEOUT)
2010 getset_timeout->timeout = *timeout;
2011
2012 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, timeout);
2013}
2014
2015/* recover user timeout setting */
2016static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
2017 u32 *timeout)
2018{
2019 if (card->options.vnicc.sup_chars & vnicc &&
2020 card->options.vnicc.getset_timeout_sup & vnicc &&
2021 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
2022 timeout))
2023 return false;
2024 *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2025 return true;
2026}
2027
2028/* set current VNICC flag state; called from sysfs store function */
2029int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
2030{
2031 int rc = 0;
2032 u32 cmd;
2033
2034 QETH_CARD_TEXT(card, 2, "vniccsch");
2035
2036 /* check if characteristic and enable/disable are supported */
2037 if (!(card->options.vnicc.sup_chars & vnicc) ||
2038 !(card->options.vnicc.set_char_sup & vnicc))
2039 return -EOPNOTSUPP;
2040
2041 if (qeth_bridgeport_is_in_use(card))
2042 return -EBUSY;
2043
2044 /* set enable/disable command and store wanted characteristic */
2045 if (state) {
2046 cmd = IPA_VNICC_ENABLE;
2047 card->options.vnicc.wanted_chars |= vnicc;
2048 } else {
2049 cmd = IPA_VNICC_DISABLE;
2050 card->options.vnicc.wanted_chars &= ~vnicc;
2051 }
2052
2053 /* do we need to do anything? */
2054 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
2055 return rc;
2056
2057 /* if card is not ready, simply stop here */
2058 if (!qeth_card_hw_is_reachable(card)) {
2059 if (state)
2060 card->options.vnicc.cur_chars |= vnicc;
2061 else
2062 card->options.vnicc.cur_chars &= ~vnicc;
2063 return rc;
2064 }
2065
2066 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
2067 if (rc)
2068 card->options.vnicc.wanted_chars =
2069 card->options.vnicc.cur_chars;
2070 else {
2071 /* successful online VNICC change; handle special cases */
2072 if (state && vnicc == QETH_VNICC_RX_BCAST)
2073 card->options.vnicc.rx_bcast_enabled = true;
2074 if (!state && vnicc == QETH_VNICC_LEARNING)
2075 qeth_l2_vnicc_recover_timeout(card, vnicc,
2076 &card->options.vnicc.learning_timeout);
2077 }
2078
2079 return rc;
2080}
2081
2082/* get current VNICC flag state; called from sysfs show function */
2083int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
2084{
2085 int rc = 0;
2086
2087 QETH_CARD_TEXT(card, 2, "vniccgch");
2088
2089 /* check if characteristic is supported */
2090 if (!(card->options.vnicc.sup_chars & vnicc))
2091 return -EOPNOTSUPP;
2092
2093 if (qeth_bridgeport_is_in_use(card))
2094 return -EBUSY;
2095
2096 /* if card is ready, query current VNICC state */
2097 if (qeth_card_hw_is_reachable(card))
2098 rc = qeth_l2_vnicc_query_chars(card);
2099
2100 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
2101 return rc;
2102}
2103
2104/* set VNICC timeout; called from sysfs store function. Currently, only learning
2105 * supports timeout
2106 */
2107int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
2108{
2109 int rc = 0;
2110
2111 QETH_CARD_TEXT(card, 2, "vniccsto");
2112
2113 /* check if characteristic and set_timeout are supported */
2114 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2115 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2116 return -EOPNOTSUPP;
2117
2118 if (qeth_bridgeport_is_in_use(card))
2119 return -EBUSY;
2120
2121 /* do we need to do anything? */
2122 if (card->options.vnicc.learning_timeout == timeout)
2123 return rc;
2124
2125 /* if card is not ready, simply store the value internally and return */
2126 if (!qeth_card_hw_is_reachable(card)) {
2127 card->options.vnicc.learning_timeout = timeout;
2128 return rc;
2129 }
2130
2131 /* send timeout value to card; if successful, store value internally */
2132 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2133 IPA_VNICC_SET_TIMEOUT, &timeout);
2134 if (!rc)
2135 card->options.vnicc.learning_timeout = timeout;
2136
2137 return rc;
2138}
2139
2140/* get current VNICC timeout; called from sysfs show function. Currently, only
2141 * learning supports timeout
2142 */
2143int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
2144{
2145 int rc = 0;
2146
2147 QETH_CARD_TEXT(card, 2, "vniccgto");
2148
2149 /* check if characteristic and get_timeout are supported */
2150 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2151 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2152 return -EOPNOTSUPP;
2153
2154 if (qeth_bridgeport_is_in_use(card))
2155 return -EBUSY;
2156
2157 /* if card is ready, get timeout. Otherwise, just return stored value */
2158 *timeout = card->options.vnicc.learning_timeout;
2159 if (qeth_card_hw_is_reachable(card))
2160 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2161 IPA_VNICC_GET_TIMEOUT,
2162 timeout);
2163
2164 return rc;
2165}
2166
2167/* check if VNICC is currently enabled */
2168static bool _qeth_l2_vnicc_is_in_use(struct qeth_card *card)
2169{
2170 if (!card->options.vnicc.sup_chars)
2171 return false;
2172 /* default values are only OK if rx_bcast was not enabled by user
2173 * or the card is offline.
2174 */
2175 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
2176 if (!card->options.vnicc.rx_bcast_enabled ||
2177 !qeth_card_hw_is_reachable(card))
2178 return false;
2179 }
2180 return true;
2181}
2182
2183/**
2184 * qeth_bridgeport_allowed - are any qeth_bridgeport functions allowed?
2185 * @card: qeth_card structure pointer
2186 *
2187 * qeth_bridgeport functionality is mutually exclusive with usage of the
2188 * VNIC Characteristics and dev2br address notifications
2189 */
2190bool qeth_bridgeport_allowed(struct qeth_card *card)
2191{
2192 struct qeth_priv *priv = netdev_priv(card->dev);
2193
2194 return (!_qeth_l2_vnicc_is_in_use(card) &&
2195 !(priv->brport_features & BR_LEARNING_SYNC));
2196}
2197
2198/* recover user characteristic setting */
2199static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2200 bool enable)
2201{
2202 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2203
2204 if (card->options.vnicc.sup_chars & vnicc &&
2205 card->options.vnicc.set_char_sup & vnicc &&
2206 !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2207 return false;
2208 card->options.vnicc.wanted_chars &= ~vnicc;
2209 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2210 return true;
2211}
2212
2213/* (re-)initialize VNICC */
2214static void qeth_l2_vnicc_init(struct qeth_card *card)
2215{
2216 u32 *timeout = &card->options.vnicc.learning_timeout;
2217 bool enable, error = false;
2218 unsigned int chars_len, i;
2219 unsigned long chars_tmp;
2220 u32 sup_cmds, vnicc;
2221
2222 QETH_CARD_TEXT(card, 2, "vniccini");
2223 /* reset rx_bcast */
2224 card->options.vnicc.rx_bcast_enabled = 0;
2225 /* initial query and storage of VNIC characteristics */
2226 if (qeth_l2_vnicc_query_chars(card)) {
2227 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2228 *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
2229 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2230 /* fail quietly if user didn't change the default config */
2231 card->options.vnicc.sup_chars = 0;
2232 card->options.vnicc.cur_chars = 0;
2233 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2234 return;
2235 }
2236 /* get supported commands for each supported characteristic */
2237 chars_tmp = card->options.vnicc.sup_chars;
2238 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2239 for_each_set_bit(i, &chars_tmp, chars_len) {
2240 vnicc = BIT(i);
2241 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) {
2242 sup_cmds = 0;
2243 error = true;
2244 }
2245 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) &&
2246 (sup_cmds & IPA_VNICC_GET_TIMEOUT))
2247 card->options.vnicc.getset_timeout_sup |= vnicc;
2248 else
2249 card->options.vnicc.getset_timeout_sup &= ~vnicc;
2250 if ((sup_cmds & IPA_VNICC_ENABLE) &&
2251 (sup_cmds & IPA_VNICC_DISABLE))
2252 card->options.vnicc.set_char_sup |= vnicc;
2253 else
2254 card->options.vnicc.set_char_sup &= ~vnicc;
2255 }
2256 /* enforce assumed default values and recover settings, if changed */
2257 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2258 timeout);
2259 /* Change chars, if necessary */
2260 chars_tmp = card->options.vnicc.wanted_chars ^
2261 card->options.vnicc.cur_chars;
2262 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2263 for_each_set_bit(i, &chars_tmp, chars_len) {
2264 vnicc = BIT(i);
2265 enable = card->options.vnicc.wanted_chars & vnicc;
2266 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2267 }
2268 if (error)
2269 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2270}
2271
2272/* configure default values of VNIC characteristics */
2273static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2274{
2275 /* characteristics values */
2276 card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2277 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
2278 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2279 /* supported commands */
2280 card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
2281 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
2282 /* settings wanted by users */
2283 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2284}
2285
2286static const struct device_type qeth_l2_devtype = {
2287 .name = "qeth_layer2",
2288 .groups = qeth_l2_attr_groups,
2289};
2290
2291static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
2292{
2293 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2294 int rc;
2295
2296 qeth_l2_vnicc_set_defaults(card);
2297 mutex_init(&card->sbp_lock);
2298
2299 if (gdev->dev.type) {
2300 rc = device_add_groups(&gdev->dev, qeth_l2_attr_groups);
2301 if (rc)
2302 return rc;
2303 } else {
2304 gdev->dev.type = &qeth_l2_devtype;
2305 }
2306
2307 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work);
2308 return 0;
2309}
2310
2311static void qeth_l2_remove_device(struct ccwgroup_device *gdev)
2312{
2313 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2314 struct qeth_priv *priv;
2315
2316 if (gdev->dev.type != &qeth_l2_devtype)
2317 device_remove_groups(&gdev->dev, qeth_l2_attr_groups);
2318
2319 qeth_set_allowed_threads(card, 0, 1);
2320 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2321
2322 if (gdev->state == CCWGROUP_ONLINE)
2323 qeth_set_offline(card, card->discipline, false);
2324
2325 if (card->dev->reg_state == NETREG_REGISTERED) {
2326 priv = netdev_priv(card->dev);
2327 if (priv->brport_features & BR_LEARNING_SYNC) {
2328 rtnl_lock();
2329 qeth_l2_br2dev_put();
2330 rtnl_unlock();
2331 }
2332 unregister_netdev(card->dev);
2333 }
2334}
2335
2336static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok)
2337{
2338 struct net_device *dev = card->dev;
2339 int rc = 0;
2340
2341 qeth_l2_detect_dev2br_support(card);
2342
2343 mutex_lock(&card->sbp_lock);
2344 qeth_bridgeport_query_support(card);
2345 if (card->options.sbp.supported_funcs) {
2346 qeth_l2_setup_bridgeport_attrs(card);
2347 dev_info(&card->gdev->dev,
2348 "The device represents a Bridge Capable Port\n");
2349 }
2350 mutex_unlock(&card->sbp_lock);
2351
2352 qeth_l2_register_dev_addr(card);
2353
2354 /* for the rx_bcast characteristic, init VNICC after setmac */
2355 qeth_l2_vnicc_init(card);
2356
2357 qeth_l2_trace_features(card);
2358
2359 /* softsetup */
2360 QETH_CARD_TEXT(card, 2, "softsetp");
2361
2362 card->state = CARD_STATE_SOFTSETUP;
2363
2364 qeth_set_allowed_threads(card, 0xffffffff, 0);
2365
2366 if (dev->reg_state != NETREG_REGISTERED) {
2367 rc = qeth_l2_setup_netdev(card);
2368 if (rc)
2369 goto err_setup;
2370
2371 if (carrier_ok)
2372 netif_carrier_on(dev);
2373 } else {
2374 rtnl_lock();
2375 rc = qeth_set_real_num_tx_queues(card,
2376 qeth_tx_actual_queues(card));
2377 if (rc) {
2378 rtnl_unlock();
2379 goto err_set_queues;
2380 }
2381
2382 if (carrier_ok)
2383 netif_carrier_on(dev);
2384 else
2385 netif_carrier_off(dev);
2386
2387 netif_device_attach(dev);
2388 qeth_enable_hw_features(dev);
2389 qeth_l2_enable_brport_features(card);
2390
2391 if (netif_running(dev)) {
2392 local_bh_disable();
2393 napi_schedule(&card->napi);
2394 /* kick-start the NAPI softirq: */
2395 local_bh_enable();
2396 qeth_l2_set_rx_mode(dev);
2397 }
2398 rtnl_unlock();
2399 }
2400 return 0;
2401
2402err_set_queues:
2403err_setup:
2404 qeth_set_allowed_threads(card, 0, 1);
2405 card->state = CARD_STATE_DOWN;
2406 return rc;
2407}
2408
2409static void qeth_l2_set_offline(struct qeth_card *card)
2410{
2411 struct qeth_priv *priv = netdev_priv(card->dev);
2412
2413 qeth_set_allowed_threads(card, 0, 1);
2414 qeth_l2_drain_rx_mode_cache(card);
2415
2416 if (card->state == CARD_STATE_SOFTSETUP)
2417 card->state = CARD_STATE_DOWN;
2418
2419 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
2420 if (priv->brport_features & BR_LEARNING_SYNC)
2421 qeth_l2_dev2br_fdb_flush(card);
2422}
2423
2424/* Returns zero if the command is successfully "consumed" */
2425static int qeth_l2_control_event(struct qeth_card *card,
2426 struct qeth_ipa_cmd *cmd)
2427{
2428 switch (cmd->hdr.command) {
2429 case IPA_CMD_SETBRIDGEPORT_OSA:
2430 case IPA_CMD_SETBRIDGEPORT_IQD:
2431 if (cmd->data.sbp.hdr.command_code ==
2432 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
2433 qeth_bridge_state_change(card, cmd);
2434 return 0;
2435 }
2436
2437 return 1;
2438 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
2439 qeth_addr_change_event(card, cmd);
2440 return 0;
2441 default:
2442 return 1;
2443 }
2444}
2445
2446const struct qeth_discipline qeth_l2_discipline = {
2447 .setup = qeth_l2_probe_device,
2448 .remove = qeth_l2_remove_device,
2449 .set_online = qeth_l2_set_online,
2450 .set_offline = qeth_l2_set_offline,
2451 .control_event_handler = qeth_l2_control_event,
2452};
2453EXPORT_SYMBOL_GPL(qeth_l2_discipline);
2454
2455static int __init qeth_l2_init(void)
2456{
2457 pr_info("register layer 2 discipline\n");
2458 refcount_set(&qeth_l2_switchdev_notify_refcnt, 0);
2459 return 0;
2460}
2461
2462static void __exit qeth_l2_exit(void)
2463{
2464 pr_info("unregister layer 2 discipline\n");
2465}
2466
2467module_init(qeth_l2_init);
2468module_exit(qeth_l2_exit);
2469MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2470MODULE_DESCRIPTION("qeth layer 2 discipline");
2471MODULE_LICENSE("GPL");
1/*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9#define KMSG_COMPONENT "qeth"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include <linux/module.h>
13#include <linux/moduleparam.h>
14#include <linux/string.h>
15#include <linux/errno.h>
16#include <linux/kernel.h>
17#include <linux/slab.h>
18#include <linux/etherdevice.h>
19#include <linux/mii.h>
20#include <linux/ip.h>
21#include <linux/list.h>
22#include <linux/hash.h>
23#include <linux/hashtable.h>
24#include <linux/string.h>
25#include "qeth_core.h"
26#include "qeth_l2.h"
27
28static int qeth_l2_set_offline(struct ccwgroup_device *);
29static int qeth_l2_stop(struct net_device *);
30static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
31static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
32 enum qeth_ipa_cmds);
33static void qeth_l2_set_rx_mode(struct net_device *);
34static int qeth_l2_recover(void *);
35static void qeth_bridgeport_query_support(struct qeth_card *card);
36static void qeth_bridge_state_change(struct qeth_card *card,
37 struct qeth_ipa_cmd *cmd);
38static void qeth_bridge_host_event(struct qeth_card *card,
39 struct qeth_ipa_cmd *cmd);
40
41static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
42{
43 struct qeth_card *card = dev->ml_priv;
44 struct mii_ioctl_data *mii_data;
45 int rc = 0;
46
47 if (!card)
48 return -ENODEV;
49
50 if (!qeth_card_hw_is_reachable(card))
51 return -ENODEV;
52
53 if (card->info.type == QETH_CARD_TYPE_OSN)
54 return -EPERM;
55
56 switch (cmd) {
57 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
58 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
59 break;
60 case SIOC_QETH_GET_CARD_TYPE:
61 if ((card->info.type == QETH_CARD_TYPE_OSD ||
62 card->info.type == QETH_CARD_TYPE_OSM ||
63 card->info.type == QETH_CARD_TYPE_OSX) &&
64 !card->info.guestlan)
65 return 1;
66 return 0;
67 break;
68 case SIOCGMIIPHY:
69 mii_data = if_mii(rq);
70 mii_data->phy_id = 0;
71 break;
72 case SIOCGMIIREG:
73 mii_data = if_mii(rq);
74 if (mii_data->phy_id != 0)
75 rc = -EINVAL;
76 else
77 mii_data->val_out = qeth_mdio_read(dev,
78 mii_data->phy_id, mii_data->reg_num);
79 break;
80 case SIOC_QETH_QUERY_OAT:
81 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
82 break;
83 default:
84 rc = -EOPNOTSUPP;
85 }
86 if (rc)
87 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
88 return rc;
89}
90
91static int qeth_l2_verify_dev(struct net_device *dev)
92{
93 struct qeth_card *card;
94 unsigned long flags;
95 int rc = 0;
96
97 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
98 list_for_each_entry(card, &qeth_core_card_list.list, list) {
99 if (card->dev == dev) {
100 rc = QETH_REAL_CARD;
101 break;
102 }
103 }
104 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
105
106 return rc;
107}
108
109static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
110{
111 struct qeth_card *card;
112 struct net_device *ndev;
113 __u16 temp_dev_no;
114 unsigned long flags;
115 struct ccw_dev_id read_devid;
116
117 ndev = NULL;
118 memcpy(&temp_dev_no, read_dev_no, 2);
119 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
120 list_for_each_entry(card, &qeth_core_card_list.list, list) {
121 ccw_device_get_id(CARD_RDEV(card), &read_devid);
122 if (read_devid.devno == temp_dev_no) {
123 ndev = card->dev;
124 break;
125 }
126 }
127 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
128 return ndev;
129}
130
131static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
132{
133 int rc;
134
135 if (retcode)
136 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
137 switch (retcode) {
138 case IPA_RC_SUCCESS:
139 rc = 0;
140 break;
141 case IPA_RC_L2_UNSUPPORTED_CMD:
142 rc = -EOPNOTSUPP;
143 break;
144 case IPA_RC_L2_ADDR_TABLE_FULL:
145 rc = -ENOSPC;
146 break;
147 case IPA_RC_L2_DUP_MAC:
148 case IPA_RC_L2_DUP_LAYER3_MAC:
149 rc = -EEXIST;
150 break;
151 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
152 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
153 rc = -EPERM;
154 break;
155 case IPA_RC_L2_MAC_NOT_FOUND:
156 rc = -ENOENT;
157 break;
158 case -ENOMEM:
159 rc = -ENOMEM;
160 break;
161 default:
162 rc = -EIO;
163 break;
164 }
165 return rc;
166}
167
168static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
169{
170 int rc;
171
172 QETH_CARD_TEXT(card, 2, "L2Sgmac");
173 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
174 IPA_CMD_SETGMAC));
175 if (rc == -EEXIST)
176 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
177 mac, QETH_CARD_IFNAME(card));
178 else if (rc)
179 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
180 mac, QETH_CARD_IFNAME(card), rc);
181 return rc;
182}
183
184static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
185{
186 int rc;
187
188 QETH_CARD_TEXT(card, 2, "L2Dgmac");
189 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
190 IPA_CMD_DELGMAC));
191 if (rc)
192 QETH_DBF_MESSAGE(2,
193 "Could not delete group MAC %pM on %s: %d\n",
194 mac, QETH_CARD_IFNAME(card), rc);
195 return rc;
196}
197
198static inline u32 qeth_l2_mac_hash(const u8 *addr)
199{
200 return get_unaligned((u32 *)(&addr[2]));
201}
202
203static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
204{
205
206 int rc;
207
208 if (mac->is_uc) {
209 rc = qeth_setdel_makerc(card,
210 qeth_l2_send_setdelmac(card, mac->mac_addr,
211 IPA_CMD_SETVMAC));
212 } else {
213 rc = qeth_setdel_makerc(card,
214 qeth_l2_send_setgroupmac(card, mac->mac_addr));
215 }
216 return rc;
217}
218
219static void qeth_l2_del_all_macs(struct qeth_card *card, int del)
220{
221 struct qeth_mac *mac;
222 struct hlist_node *tmp;
223 int i;
224
225 spin_lock_bh(&card->mclock);
226 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
227 if (del) {
228 if (mac->is_uc)
229 qeth_l2_send_setdelmac(card, mac->mac_addr,
230 IPA_CMD_DELVMAC);
231 else
232 qeth_l2_send_delgroupmac(card, mac->mac_addr);
233 }
234 hash_del(&mac->hnode);
235 kfree(mac);
236 }
237 spin_unlock_bh(&card->mclock);
238}
239
240static inline int qeth_l2_get_cast_type(struct qeth_card *card,
241 struct sk_buff *skb)
242{
243 if (card->info.type == QETH_CARD_TYPE_OSN)
244 return RTN_UNSPEC;
245 if (is_broadcast_ether_addr(skb->data))
246 return RTN_BROADCAST;
247 if (is_multicast_ether_addr(skb->data))
248 return RTN_MULTICAST;
249 return RTN_UNSPEC;
250}
251
252static inline void qeth_l2_hdr_csum(struct qeth_card *card,
253 struct qeth_hdr *hdr, struct sk_buff *skb)
254{
255 struct iphdr *iph = ip_hdr(skb);
256
257 /* tcph->check contains already the pseudo hdr checksum
258 * so just set the header flags
259 */
260 if (iph->protocol == IPPROTO_UDP)
261 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
262 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
263 QETH_HDR_EXT_CSUM_HDR_REQ;
264 iph->check = 0;
265 if (card->options.performance_stats)
266 card->perf_stats.tx_csum++;
267}
268
269static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
270 struct sk_buff *skb, int cast_type)
271{
272 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
273
274 memset(hdr, 0, sizeof(struct qeth_hdr));
275 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
276
277 /* set byte byte 3 to casting flags */
278 if (cast_type == RTN_MULTICAST)
279 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
280 else if (cast_type == RTN_BROADCAST)
281 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
282 else
283 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
284
285 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
286 /* VSWITCH relies on the VLAN
287 * information to be present in
288 * the QDIO header */
289 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
290 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
291 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
292 }
293}
294
295static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
296 struct qeth_reply *reply, unsigned long data)
297{
298 struct qeth_ipa_cmd *cmd;
299
300 QETH_CARD_TEXT(card, 2, "L2sdvcb");
301 cmd = (struct qeth_ipa_cmd *) data;
302 if (cmd->hdr.return_code) {
303 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
304 "Continuing\n", cmd->data.setdelvlan.vlan_id,
305 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
306 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
307 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
308 }
309 return 0;
310}
311
312static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
313 enum qeth_ipa_cmds ipacmd)
314{
315 struct qeth_ipa_cmd *cmd;
316 struct qeth_cmd_buffer *iob;
317
318 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
319 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
320 if (!iob)
321 return -ENOMEM;
322 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
323 cmd->data.setdelvlan.vlan_id = i;
324 return qeth_send_ipa_cmd(card, iob,
325 qeth_l2_send_setdelvlan_cb, NULL);
326}
327
328static void qeth_l2_process_vlans(struct qeth_card *card)
329{
330 struct qeth_vlan_vid *id;
331 QETH_CARD_TEXT(card, 3, "L2prcvln");
332 spin_lock_bh(&card->vlanlock);
333 list_for_each_entry(id, &card->vid_list, list) {
334 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
335 }
336 spin_unlock_bh(&card->vlanlock);
337}
338
339static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
340 __be16 proto, u16 vid)
341{
342 struct qeth_card *card = dev->ml_priv;
343 struct qeth_vlan_vid *id;
344 int rc;
345
346 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
347 if (!vid)
348 return 0;
349 if (card->info.type == QETH_CARD_TYPE_OSM) {
350 QETH_CARD_TEXT(card, 3, "aidOSM");
351 return 0;
352 }
353 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
354 QETH_CARD_TEXT(card, 3, "aidREC");
355 return 0;
356 }
357 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
358 if (id) {
359 id->vid = vid;
360 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
361 if (rc) {
362 kfree(id);
363 return rc;
364 }
365 spin_lock_bh(&card->vlanlock);
366 list_add_tail(&id->list, &card->vid_list);
367 spin_unlock_bh(&card->vlanlock);
368 } else {
369 return -ENOMEM;
370 }
371 return 0;
372}
373
374static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
375 __be16 proto, u16 vid)
376{
377 struct qeth_vlan_vid *id, *tmpid = NULL;
378 struct qeth_card *card = dev->ml_priv;
379 int rc = 0;
380
381 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
382 if (card->info.type == QETH_CARD_TYPE_OSM) {
383 QETH_CARD_TEXT(card, 3, "kidOSM");
384 return 0;
385 }
386 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
387 QETH_CARD_TEXT(card, 3, "kidREC");
388 return 0;
389 }
390 spin_lock_bh(&card->vlanlock);
391 list_for_each_entry(id, &card->vid_list, list) {
392 if (id->vid == vid) {
393 list_del(&id->list);
394 tmpid = id;
395 break;
396 }
397 }
398 spin_unlock_bh(&card->vlanlock);
399 if (tmpid) {
400 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
401 kfree(tmpid);
402 }
403 qeth_l2_set_rx_mode(card->dev);
404 return rc;
405}
406
407static netdev_features_t qeth_l2_fix_features(struct net_device *dev,
408 netdev_features_t features)
409{
410 struct qeth_card *card = dev->ml_priv;
411
412 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
413 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
414 features &= ~NETIF_F_IP_CSUM;
415 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
416 features &= ~NETIF_F_RXCSUM;
417 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
418 return features;
419}
420
421static int qeth_l2_set_features(struct net_device *dev,
422 netdev_features_t features)
423{
424 struct qeth_card *card = dev->ml_priv;
425 netdev_features_t changed = dev->features ^ features;
426
427 QETH_DBF_TEXT(SETUP, 2, "setfeat");
428 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
429
430 if (card->state == CARD_STATE_DOWN ||
431 card->state == CARD_STATE_RECOVER)
432 return 0;
433
434 if (!(changed & NETIF_F_RXCSUM))
435 return 0;
436 return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
437}
438
439static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
440{
441 QETH_DBF_TEXT(SETUP , 2, "stopcard");
442 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
443
444 qeth_set_allowed_threads(card, 0, 1);
445 if (card->read.state == CH_STATE_UP &&
446 card->write.state == CH_STATE_UP &&
447 (card->state == CARD_STATE_UP)) {
448 if (recovery_mode &&
449 card->info.type != QETH_CARD_TYPE_OSN) {
450 qeth_l2_stop(card->dev);
451 } else {
452 rtnl_lock();
453 dev_close(card->dev);
454 rtnl_unlock();
455 }
456 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
457 card->state = CARD_STATE_SOFTSETUP;
458 }
459 if (card->state == CARD_STATE_SOFTSETUP) {
460 qeth_l2_del_all_macs(card, 0);
461 qeth_clear_ipacmd_list(card);
462 card->state = CARD_STATE_HARDSETUP;
463 }
464 if (card->state == CARD_STATE_HARDSETUP) {
465 qeth_qdio_clear_card(card, 0);
466 qeth_clear_qdio_buffers(card);
467 qeth_clear_working_pool_list(card);
468 card->state = CARD_STATE_DOWN;
469 }
470 if (card->state == CARD_STATE_DOWN) {
471 qeth_clear_cmd_buffers(&card->read);
472 qeth_clear_cmd_buffers(&card->write);
473 }
474}
475
476static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
477 int budget, int *done)
478{
479 int work_done = 0;
480 struct sk_buff *skb;
481 struct qeth_hdr *hdr;
482 unsigned int len;
483
484 *done = 0;
485 WARN_ON_ONCE(!budget);
486 while (budget) {
487 skb = qeth_core_get_next_skb(card,
488 &card->qdio.in_q->bufs[card->rx.b_index],
489 &card->rx.b_element, &card->rx.e_offset, &hdr);
490 if (!skb) {
491 *done = 1;
492 break;
493 }
494 skb->dev = card->dev;
495 switch (hdr->hdr.l2.id) {
496 case QETH_HEADER_TYPE_LAYER2:
497 skb->pkt_type = PACKET_HOST;
498 skb->protocol = eth_type_trans(skb, skb->dev);
499 if ((card->dev->features & NETIF_F_RXCSUM)
500 && ((hdr->hdr.l2.flags[1] &
501 (QETH_HDR_EXT_CSUM_HDR_REQ |
502 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
503 (QETH_HDR_EXT_CSUM_HDR_REQ |
504 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
505 skb->ip_summed = CHECKSUM_UNNECESSARY;
506 else
507 skb->ip_summed = CHECKSUM_NONE;
508 if (skb->protocol == htons(ETH_P_802_2))
509 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
510 len = skb->len;
511 napi_gro_receive(&card->napi, skb);
512 break;
513 case QETH_HEADER_TYPE_OSN:
514 if (card->info.type == QETH_CARD_TYPE_OSN) {
515 skb_push(skb, sizeof(struct qeth_hdr));
516 skb_copy_to_linear_data(skb, hdr,
517 sizeof(struct qeth_hdr));
518 len = skb->len;
519 card->osn_info.data_cb(skb);
520 break;
521 }
522 /* else unknown */
523 default:
524 dev_kfree_skb_any(skb);
525 QETH_CARD_TEXT(card, 3, "inbunkno");
526 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
527 continue;
528 }
529 work_done++;
530 budget--;
531 card->stats.rx_packets++;
532 card->stats.rx_bytes += len;
533 }
534 return work_done;
535}
536
537static int qeth_l2_poll(struct napi_struct *napi, int budget)
538{
539 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
540 int work_done = 0;
541 struct qeth_qdio_buffer *buffer;
542 int done;
543 int new_budget = budget;
544
545 if (card->options.performance_stats) {
546 card->perf_stats.inbound_cnt++;
547 card->perf_stats.inbound_start_time = qeth_get_micros();
548 }
549
550 while (1) {
551 if (!card->rx.b_count) {
552 card->rx.qdio_err = 0;
553 card->rx.b_count = qdio_get_next_buffers(
554 card->data.ccwdev, 0, &card->rx.b_index,
555 &card->rx.qdio_err);
556 if (card->rx.b_count <= 0) {
557 card->rx.b_count = 0;
558 break;
559 }
560 card->rx.b_element =
561 &card->qdio.in_q->bufs[card->rx.b_index]
562 .buffer->element[0];
563 card->rx.e_offset = 0;
564 }
565
566 while (card->rx.b_count) {
567 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
568 if (!(card->rx.qdio_err &&
569 qeth_check_qdio_errors(card, buffer->buffer,
570 card->rx.qdio_err, "qinerr")))
571 work_done += qeth_l2_process_inbound_buffer(
572 card, new_budget, &done);
573 else
574 done = 1;
575
576 if (done) {
577 if (card->options.performance_stats)
578 card->perf_stats.bufs_rec++;
579 qeth_put_buffer_pool_entry(card,
580 buffer->pool_entry);
581 qeth_queue_input_buffer(card, card->rx.b_index);
582 card->rx.b_count--;
583 if (card->rx.b_count) {
584 card->rx.b_index =
585 (card->rx.b_index + 1) %
586 QDIO_MAX_BUFFERS_PER_Q;
587 card->rx.b_element =
588 &card->qdio.in_q
589 ->bufs[card->rx.b_index]
590 .buffer->element[0];
591 card->rx.e_offset = 0;
592 }
593 }
594
595 if (work_done >= budget)
596 goto out;
597 else
598 new_budget = budget - work_done;
599 }
600 }
601
602 napi_complete(napi);
603 if (qdio_start_irq(card->data.ccwdev, 0))
604 napi_schedule(&card->napi);
605out:
606 if (card->options.performance_stats)
607 card->perf_stats.inbound_time += qeth_get_micros() -
608 card->perf_stats.inbound_start_time;
609 return work_done;
610}
611
612static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
613 enum qeth_ipa_cmds ipacmd)
614{
615 struct qeth_ipa_cmd *cmd;
616 struct qeth_cmd_buffer *iob;
617
618 QETH_CARD_TEXT(card, 2, "L2sdmac");
619 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
620 if (!iob)
621 return -ENOMEM;
622 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
623 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
624 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
625 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
626}
627
628static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
629{
630 int rc;
631
632 QETH_CARD_TEXT(card, 2, "L2Setmac");
633 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
634 IPA_CMD_SETVMAC));
635 if (rc == 0) {
636 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
637 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
638 dev_info(&card->gdev->dev,
639 "MAC address %pM successfully registered on device %s\n",
640 card->dev->dev_addr, card->dev->name);
641 } else {
642 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
643 switch (rc) {
644 case -EEXIST:
645 dev_warn(&card->gdev->dev,
646 "MAC address %pM already exists\n", mac);
647 break;
648 case -EPERM:
649 dev_warn(&card->gdev->dev,
650 "MAC address %pM is not authorized\n", mac);
651 break;
652 }
653 }
654 return rc;
655}
656
657static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
658{
659 int rc;
660
661 QETH_CARD_TEXT(card, 2, "L2Delmac");
662 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
663 return 0;
664 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
665 IPA_CMD_DELVMAC));
666 if (rc == 0)
667 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
668 return rc;
669}
670
671static int qeth_l2_request_initial_mac(struct qeth_card *card)
672{
673 int rc = 0;
674 char vendor_pre[] = {0x02, 0x00, 0x00};
675
676 QETH_DBF_TEXT(SETUP, 2, "doL2init");
677 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
678
679 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
680 rc = qeth_query_setadapterparms(card);
681 if (rc) {
682 QETH_DBF_MESSAGE(2, "could not query adapter "
683 "parameters on device %s: x%x\n",
684 CARD_BUS_ID(card), rc);
685 }
686 }
687
688 if (card->info.type == QETH_CARD_TYPE_IQD ||
689 card->info.type == QETH_CARD_TYPE_OSM ||
690 card->info.type == QETH_CARD_TYPE_OSX ||
691 card->info.guestlan) {
692 rc = qeth_setadpparms_change_macaddr(card);
693 if (rc) {
694 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
695 "device %s: x%x\n", CARD_BUS_ID(card), rc);
696 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
697 return rc;
698 }
699 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
700 } else {
701 eth_random_addr(card->dev->dev_addr);
702 memcpy(card->dev->dev_addr, vendor_pre, 3);
703 }
704 return 0;
705}
706
707static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
708{
709 struct sockaddr *addr = p;
710 struct qeth_card *card = dev->ml_priv;
711 int rc = 0;
712
713 QETH_CARD_TEXT(card, 3, "setmac");
714
715 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
716 QETH_CARD_TEXT(card, 3, "setmcINV");
717 return -EOPNOTSUPP;
718 }
719
720 if (card->info.type == QETH_CARD_TYPE_OSN ||
721 card->info.type == QETH_CARD_TYPE_OSM ||
722 card->info.type == QETH_CARD_TYPE_OSX) {
723 QETH_CARD_TEXT(card, 3, "setmcTYP");
724 return -EOPNOTSUPP;
725 }
726 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
727 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
728 QETH_CARD_TEXT(card, 3, "setmcREC");
729 return -ERESTARTSYS;
730 }
731 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
732 if (!rc || (rc == -ENOENT))
733 rc = qeth_l2_send_setmac(card, addr->sa_data);
734 return rc ? -EINVAL : 0;
735}
736
737static void qeth_promisc_to_bridge(struct qeth_card *card)
738{
739 struct net_device *dev = card->dev;
740 enum qeth_ipa_promisc_modes promisc_mode;
741 int role;
742 int rc;
743
744 QETH_CARD_TEXT(card, 3, "pmisc2br");
745
746 if (!card->options.sbp.reflect_promisc)
747 return;
748 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
749 : SET_PROMISC_MODE_OFF;
750 if (promisc_mode == card->info.promisc_mode)
751 return;
752
753 if (promisc_mode == SET_PROMISC_MODE_ON) {
754 if (card->options.sbp.reflect_promisc_primary)
755 role = QETH_SBP_ROLE_PRIMARY;
756 else
757 role = QETH_SBP_ROLE_SECONDARY;
758 } else
759 role = QETH_SBP_ROLE_NONE;
760
761 rc = qeth_bridgeport_setrole(card, role);
762 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
763 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
764 if (!rc) {
765 card->options.sbp.role = role;
766 card->info.promisc_mode = promisc_mode;
767 }
768
769}
770/* New MAC address is added to the hash table and marked to be written on card
771 * only if there is not in the hash table storage already
772 *
773*/
774static void
775qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
776{
777 struct qeth_mac *mac;
778
779 hash_for_each_possible(card->mac_htable, mac, hnode,
780 qeth_l2_mac_hash(ha->addr)) {
781 if (is_uc == mac->is_uc &&
782 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
783 mac->disp_flag = QETH_DISP_MAC_DO_NOTHING;
784 return;
785 }
786 }
787
788 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
789
790 if (!mac)
791 return;
792
793 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
794 mac->is_uc = is_uc;
795 mac->disp_flag = QETH_DISP_MAC_ADD;
796
797 hash_add(card->mac_htable, &mac->hnode,
798 qeth_l2_mac_hash(mac->mac_addr));
799
800}
801
802static void qeth_l2_set_rx_mode(struct net_device *dev)
803{
804 struct qeth_card *card = dev->ml_priv;
805 struct netdev_hw_addr *ha;
806 struct qeth_mac *mac;
807 struct hlist_node *tmp;
808 int i;
809 int rc;
810
811 if (card->info.type == QETH_CARD_TYPE_OSN)
812 return;
813
814 QETH_CARD_TEXT(card, 3, "setmulti");
815 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
816 (card->state != CARD_STATE_UP))
817 return;
818
819 spin_lock_bh(&card->mclock);
820
821 netdev_for_each_mc_addr(ha, dev)
822 qeth_l2_add_mac(card, ha, 0);
823
824 netdev_for_each_uc_addr(ha, dev)
825 qeth_l2_add_mac(card, ha, 1);
826
827 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
828 if (mac->disp_flag == QETH_DISP_MAC_DELETE) {
829 if (!mac->is_uc)
830 rc = qeth_l2_send_delgroupmac(card,
831 mac->mac_addr);
832 else {
833 rc = qeth_l2_send_setdelmac(card, mac->mac_addr,
834 IPA_CMD_DELVMAC);
835 }
836
837 hash_del(&mac->hnode);
838 kfree(mac);
839
840 } else if (mac->disp_flag == QETH_DISP_MAC_ADD) {
841 rc = qeth_l2_write_mac(card, mac);
842 if (rc) {
843 hash_del(&mac->hnode);
844 kfree(mac);
845 } else
846 mac->disp_flag = QETH_DISP_MAC_DELETE;
847 } else
848 mac->disp_flag = QETH_DISP_MAC_DELETE;
849 }
850
851 spin_unlock_bh(&card->mclock);
852
853 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
854 qeth_setadp_promisc_mode(card);
855 else
856 qeth_promisc_to_bridge(card);
857}
858
859static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
860{
861 int rc;
862 struct qeth_hdr *hdr = NULL;
863 int elements = 0;
864 struct qeth_card *card = dev->ml_priv;
865 struct sk_buff *new_skb = skb;
866 int cast_type = qeth_l2_get_cast_type(card, skb);
867 struct qeth_qdio_out_q *queue;
868 int tx_bytes = skb->len;
869 int data_offset = -1;
870 int elements_needed = 0;
871 int hd_len = 0;
872
873 if (card->qdio.do_prio_queueing || (cast_type &&
874 card->info.is_multicast_different))
875 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
876 qeth_get_ip_version(skb), cast_type)];
877 else
878 queue = card->qdio.out_qs[card->qdio.default_out_queue];
879
880 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
881 card->stats.tx_carrier_errors++;
882 goto tx_drop;
883 }
884
885 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
886 (skb->protocol == htons(ETH_P_IPV6)))
887 goto tx_drop;
888
889 if (card->options.performance_stats) {
890 card->perf_stats.outbound_cnt++;
891 card->perf_stats.outbound_start_time = qeth_get_micros();
892 }
893 netif_stop_queue(dev);
894
895 if (card->info.type == QETH_CARD_TYPE_OSN)
896 hdr = (struct qeth_hdr *)skb->data;
897 else {
898 if (card->info.type == QETH_CARD_TYPE_IQD) {
899 new_skb = skb;
900 data_offset = ETH_HLEN;
901 hd_len = ETH_HLEN;
902 hdr = kmem_cache_alloc(qeth_core_header_cache,
903 GFP_ATOMIC);
904 if (!hdr)
905 goto tx_drop;
906 elements_needed++;
907 skb_reset_mac_header(new_skb);
908 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
909 hdr->hdr.l2.pkt_length = new_skb->len;
910 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
911 skb_mac_header(new_skb), ETH_HLEN);
912 } else {
913 /* create a clone with writeable headroom */
914 new_skb = skb_realloc_headroom(skb,
915 sizeof(struct qeth_hdr));
916 if (!new_skb)
917 goto tx_drop;
918 hdr = (struct qeth_hdr *)skb_push(new_skb,
919 sizeof(struct qeth_hdr));
920 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
921 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
922 if (new_skb->ip_summed == CHECKSUM_PARTIAL)
923 qeth_l2_hdr_csum(card, hdr, new_skb);
924 }
925 }
926
927 elements = qeth_get_elements_no(card, new_skb, elements_needed);
928 if (!elements) {
929 if (data_offset >= 0)
930 kmem_cache_free(qeth_core_header_cache, hdr);
931 goto tx_drop;
932 }
933
934 if (card->info.type != QETH_CARD_TYPE_IQD) {
935 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
936 sizeof(struct qeth_hdr_layer2)))
937 goto tx_drop;
938 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
939 elements);
940 } else
941 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
942 elements, data_offset, hd_len);
943 if (!rc) {
944 card->stats.tx_packets++;
945 card->stats.tx_bytes += tx_bytes;
946 if (new_skb != skb)
947 dev_kfree_skb_any(skb);
948 rc = NETDEV_TX_OK;
949 } else {
950 if (data_offset >= 0)
951 kmem_cache_free(qeth_core_header_cache, hdr);
952
953 if (rc == -EBUSY) {
954 if (new_skb != skb)
955 dev_kfree_skb_any(new_skb);
956 return NETDEV_TX_BUSY;
957 } else
958 goto tx_drop;
959 }
960
961 netif_wake_queue(dev);
962 if (card->options.performance_stats)
963 card->perf_stats.outbound_time += qeth_get_micros() -
964 card->perf_stats.outbound_start_time;
965 return rc;
966
967tx_drop:
968 card->stats.tx_dropped++;
969 card->stats.tx_errors++;
970 if ((new_skb != skb) && new_skb)
971 dev_kfree_skb_any(new_skb);
972 dev_kfree_skb_any(skb);
973 netif_wake_queue(dev);
974 return NETDEV_TX_OK;
975}
976
977static int __qeth_l2_open(struct net_device *dev)
978{
979 struct qeth_card *card = dev->ml_priv;
980 int rc = 0;
981
982 QETH_CARD_TEXT(card, 4, "qethopen");
983 if (card->state == CARD_STATE_UP)
984 return rc;
985 if (card->state != CARD_STATE_SOFTSETUP)
986 return -ENODEV;
987
988 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
989 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
990 QETH_CARD_TEXT(card, 4, "nomacadr");
991 return -EPERM;
992 }
993 card->data.state = CH_STATE_UP;
994 card->state = CARD_STATE_UP;
995 netif_start_queue(dev);
996
997 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
998 napi_enable(&card->napi);
999 napi_schedule(&card->napi);
1000 } else
1001 rc = -EIO;
1002 return rc;
1003}
1004
1005static int qeth_l2_open(struct net_device *dev)
1006{
1007 struct qeth_card *card = dev->ml_priv;
1008
1009 QETH_CARD_TEXT(card, 5, "qethope_");
1010 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1011 QETH_CARD_TEXT(card, 3, "openREC");
1012 return -ERESTARTSYS;
1013 }
1014 return __qeth_l2_open(dev);
1015}
1016
1017static int qeth_l2_stop(struct net_device *dev)
1018{
1019 struct qeth_card *card = dev->ml_priv;
1020
1021 QETH_CARD_TEXT(card, 4, "qethstop");
1022 netif_tx_disable(dev);
1023 if (card->state == CARD_STATE_UP) {
1024 card->state = CARD_STATE_SOFTSETUP;
1025 napi_disable(&card->napi);
1026 }
1027 return 0;
1028}
1029
1030static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
1031{
1032 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1033
1034 qeth_l2_create_device_attributes(&gdev->dev);
1035 INIT_LIST_HEAD(&card->vid_list);
1036 hash_init(card->mac_htable);
1037 card->options.layer2 = 1;
1038 card->info.hwtrap = 0;
1039 return 0;
1040}
1041
1042static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
1043{
1044 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1045
1046 qeth_l2_remove_device_attributes(&cgdev->dev);
1047 qeth_set_allowed_threads(card, 0, 1);
1048 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1049
1050 if (cgdev->state == CCWGROUP_ONLINE)
1051 qeth_l2_set_offline(cgdev);
1052
1053 if (card->dev) {
1054 unregister_netdev(card->dev);
1055 card->dev = NULL;
1056 }
1057 return;
1058}
1059
1060static const struct ethtool_ops qeth_l2_ethtool_ops = {
1061 .get_link = ethtool_op_get_link,
1062 .get_strings = qeth_core_get_strings,
1063 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1064 .get_sset_count = qeth_core_get_sset_count,
1065 .get_drvinfo = qeth_core_get_drvinfo,
1066 .get_settings = qeth_core_ethtool_get_settings,
1067};
1068
1069static const struct ethtool_ops qeth_l2_osn_ops = {
1070 .get_strings = qeth_core_get_strings,
1071 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1072 .get_sset_count = qeth_core_get_sset_count,
1073 .get_drvinfo = qeth_core_get_drvinfo,
1074};
1075
1076static const struct net_device_ops qeth_l2_netdev_ops = {
1077 .ndo_open = qeth_l2_open,
1078 .ndo_stop = qeth_l2_stop,
1079 .ndo_get_stats = qeth_get_stats,
1080 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1081 .ndo_validate_addr = eth_validate_addr,
1082 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1083 .ndo_do_ioctl = qeth_l2_do_ioctl,
1084 .ndo_set_mac_address = qeth_l2_set_mac_address,
1085 .ndo_change_mtu = qeth_change_mtu,
1086 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1087 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1088 .ndo_tx_timeout = qeth_tx_timeout,
1089 .ndo_fix_features = qeth_l2_fix_features,
1090 .ndo_set_features = qeth_l2_set_features
1091};
1092
1093static int qeth_l2_setup_netdev(struct qeth_card *card)
1094{
1095 switch (card->info.type) {
1096 case QETH_CARD_TYPE_IQD:
1097 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1098 ether_setup);
1099 break;
1100 case QETH_CARD_TYPE_OSN:
1101 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1102 ether_setup);
1103 card->dev->flags |= IFF_NOARP;
1104 break;
1105 default:
1106 card->dev = alloc_etherdev(0);
1107 }
1108
1109 if (!card->dev)
1110 return -ENODEV;
1111
1112 card->dev->ml_priv = card;
1113 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
1114 card->dev->mtu = card->info.initial_mtu;
1115 card->dev->netdev_ops = &qeth_l2_netdev_ops;
1116 card->dev->ethtool_ops =
1117 (card->info.type != QETH_CARD_TYPE_OSN) ?
1118 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
1119 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1120 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1121 card->dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
1122 /* Turn on RX offloading per default */
1123 card->dev->features |= NETIF_F_RXCSUM;
1124 }
1125 card->info.broadcast_capable = 1;
1126 qeth_l2_request_initial_mac(card);
1127 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1128 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1129 netif_carrier_off(card->dev);
1130 return register_netdev(card->dev);
1131}
1132
1133static int qeth_l2_start_ipassists(struct qeth_card *card)
1134{
1135 /* configure isolation level */
1136 if (qeth_set_access_ctrl_online(card, 0))
1137 return -ENODEV;
1138 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
1139 qeth_set_rx_csum(card, 1);
1140 qeth_start_ipa_tx_checksum(card);
1141 return 0;
1142}
1143
1144static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1145{
1146 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1147 int rc = 0;
1148 enum qeth_card_states recover_flag;
1149
1150 mutex_lock(&card->discipline_mutex);
1151 mutex_lock(&card->conf_mutex);
1152 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1153 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1154
1155 recover_flag = card->state;
1156 rc = qeth_core_hardsetup_card(card);
1157 if (rc) {
1158 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1159 rc = -ENODEV;
1160 goto out_remove;
1161 }
1162 qeth_bridgeport_query_support(card);
1163 if (card->options.sbp.supported_funcs)
1164 dev_info(&card->gdev->dev,
1165 "The device represents a Bridge Capable Port\n");
1166 qeth_trace_features(card);
1167
1168 if (!card->dev && qeth_l2_setup_netdev(card)) {
1169 rc = -ENODEV;
1170 goto out_remove;
1171 }
1172
1173 if (card->info.type != QETH_CARD_TYPE_OSN)
1174 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1175
1176 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1177 if (card->info.hwtrap &&
1178 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1179 card->info.hwtrap = 0;
1180 } else
1181 card->info.hwtrap = 0;
1182
1183 qeth_l2_setup_bridgeport_attrs(card);
1184
1185 card->state = CARD_STATE_HARDSETUP;
1186 memset(&card->rx, 0, sizeof(struct qeth_rx));
1187 qeth_print_status_message(card);
1188
1189 /* softsetup */
1190 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1191
1192 rc = qeth_send_startlan(card);
1193 if (rc) {
1194 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1195 if (rc == 0xe080) {
1196 dev_warn(&card->gdev->dev,
1197 "The LAN is offline\n");
1198 card->lan_online = 0;
1199 goto contin;
1200 }
1201 rc = -ENODEV;
1202 goto out_remove;
1203 } else
1204 card->lan_online = 1;
1205
1206contin:
1207 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1208 (card->info.type == QETH_CARD_TYPE_OSX)) {
1209 if (qeth_l2_start_ipassists(card))
1210 goto out_remove;
1211 }
1212
1213 if (card->info.type != QETH_CARD_TYPE_OSN &&
1214 card->info.type != QETH_CARD_TYPE_OSM)
1215 qeth_l2_process_vlans(card);
1216
1217 netif_tx_disable(card->dev);
1218
1219 rc = qeth_init_qdio_queues(card);
1220 if (rc) {
1221 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1222 rc = -ENODEV;
1223 goto out_remove;
1224 }
1225 card->state = CARD_STATE_SOFTSETUP;
1226 if (card->lan_online)
1227 netif_carrier_on(card->dev);
1228 else
1229 netif_carrier_off(card->dev);
1230
1231 qeth_set_allowed_threads(card, 0xffffffff, 0);
1232 if (recover_flag == CARD_STATE_RECOVER) {
1233 if (recovery_mode &&
1234 card->info.type != QETH_CARD_TYPE_OSN) {
1235 __qeth_l2_open(card->dev);
1236 } else {
1237 rtnl_lock();
1238 dev_open(card->dev);
1239 rtnl_unlock();
1240 }
1241 /* this also sets saved unicast addresses */
1242 qeth_l2_set_rx_mode(card->dev);
1243 }
1244 /* let user_space know that device is online */
1245 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1246 mutex_unlock(&card->conf_mutex);
1247 mutex_unlock(&card->discipline_mutex);
1248 return 0;
1249
1250out_remove:
1251 qeth_l2_stop_card(card, 0);
1252 ccw_device_set_offline(CARD_DDEV(card));
1253 ccw_device_set_offline(CARD_WDEV(card));
1254 ccw_device_set_offline(CARD_RDEV(card));
1255 qdio_free(CARD_DDEV(card));
1256 if (recover_flag == CARD_STATE_RECOVER)
1257 card->state = CARD_STATE_RECOVER;
1258 else
1259 card->state = CARD_STATE_DOWN;
1260 mutex_unlock(&card->conf_mutex);
1261 mutex_unlock(&card->discipline_mutex);
1262 return rc;
1263}
1264
1265static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1266{
1267 return __qeth_l2_set_online(gdev, 0);
1268}
1269
1270static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1271 int recovery_mode)
1272{
1273 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1274 int rc = 0, rc2 = 0, rc3 = 0;
1275 enum qeth_card_states recover_flag;
1276
1277 mutex_lock(&card->discipline_mutex);
1278 mutex_lock(&card->conf_mutex);
1279 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1280 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1281
1282 if (card->dev && netif_carrier_ok(card->dev))
1283 netif_carrier_off(card->dev);
1284 recover_flag = card->state;
1285 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1286 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1287 card->info.hwtrap = 1;
1288 }
1289 qeth_l2_stop_card(card, recovery_mode);
1290 rc = ccw_device_set_offline(CARD_DDEV(card));
1291 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1292 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1293 if (!rc)
1294 rc = (rc2) ? rc2 : rc3;
1295 if (rc)
1296 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1297 qdio_free(CARD_DDEV(card));
1298 if (recover_flag == CARD_STATE_UP)
1299 card->state = CARD_STATE_RECOVER;
1300 /* let user_space know that device is offline */
1301 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1302 mutex_unlock(&card->conf_mutex);
1303 mutex_unlock(&card->discipline_mutex);
1304 return 0;
1305}
1306
1307static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1308{
1309 return __qeth_l2_set_offline(cgdev, 0);
1310}
1311
1312static int qeth_l2_recover(void *ptr)
1313{
1314 struct qeth_card *card;
1315 int rc = 0;
1316
1317 card = (struct qeth_card *) ptr;
1318 QETH_CARD_TEXT(card, 2, "recover1");
1319 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1320 return 0;
1321 QETH_CARD_TEXT(card, 2, "recover2");
1322 dev_warn(&card->gdev->dev,
1323 "A recovery process has been started for the device\n");
1324 qeth_set_recovery_task(card);
1325 __qeth_l2_set_offline(card->gdev, 1);
1326 rc = __qeth_l2_set_online(card->gdev, 1);
1327 if (!rc)
1328 dev_info(&card->gdev->dev,
1329 "Device successfully recovered!\n");
1330 else {
1331 qeth_close_dev(card);
1332 dev_warn(&card->gdev->dev, "The qeth device driver "
1333 "failed to recover an error on the device\n");
1334 }
1335 qeth_clear_recovery_task(card);
1336 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1337 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1338 return 0;
1339}
1340
1341static int __init qeth_l2_init(void)
1342{
1343 pr_info("register layer 2 discipline\n");
1344 return 0;
1345}
1346
1347static void __exit qeth_l2_exit(void)
1348{
1349 pr_info("unregister layer 2 discipline\n");
1350}
1351
1352static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1353{
1354 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1355 qeth_set_allowed_threads(card, 0, 1);
1356 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1357 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1358 qeth_qdio_clear_card(card, 0);
1359 qeth_clear_qdio_buffers(card);
1360 qdio_free(CARD_DDEV(card));
1361}
1362
1363static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1364{
1365 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1366
1367 if (card->dev)
1368 netif_device_detach(card->dev);
1369 qeth_set_allowed_threads(card, 0, 1);
1370 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1371 if (gdev->state == CCWGROUP_OFFLINE)
1372 return 0;
1373 if (card->state == CARD_STATE_UP) {
1374 if (card->info.hwtrap)
1375 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1376 __qeth_l2_set_offline(card->gdev, 1);
1377 } else
1378 __qeth_l2_set_offline(card->gdev, 0);
1379 return 0;
1380}
1381
1382static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1383{
1384 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1385 int rc = 0;
1386
1387 if (gdev->state == CCWGROUP_OFFLINE)
1388 goto out;
1389
1390 if (card->state == CARD_STATE_RECOVER) {
1391 rc = __qeth_l2_set_online(card->gdev, 1);
1392 if (rc) {
1393 rtnl_lock();
1394 dev_close(card->dev);
1395 rtnl_unlock();
1396 }
1397 } else
1398 rc = __qeth_l2_set_online(card->gdev, 0);
1399out:
1400 qeth_set_allowed_threads(card, 0xffffffff, 0);
1401 if (card->dev)
1402 netif_device_attach(card->dev);
1403 if (rc)
1404 dev_warn(&card->gdev->dev, "The qeth device driver "
1405 "failed to recover an error on the device\n");
1406 return rc;
1407}
1408
1409/* Returns zero if the command is successfully "consumed" */
1410static int qeth_l2_control_event(struct qeth_card *card,
1411 struct qeth_ipa_cmd *cmd)
1412{
1413 switch (cmd->hdr.command) {
1414 case IPA_CMD_SETBRIDGEPORT_OSA:
1415 case IPA_CMD_SETBRIDGEPORT_IQD:
1416 if (cmd->data.sbp.hdr.command_code ==
1417 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1418 qeth_bridge_state_change(card, cmd);
1419 return 0;
1420 } else
1421 return 1;
1422 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1423 qeth_bridge_host_event(card, cmd);
1424 return 0;
1425 default:
1426 return 1;
1427 }
1428}
1429
1430struct qeth_discipline qeth_l2_discipline = {
1431 .start_poll = qeth_qdio_start_poll,
1432 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1433 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1434 .recover = qeth_l2_recover,
1435 .setup = qeth_l2_probe_device,
1436 .remove = qeth_l2_remove_device,
1437 .set_online = qeth_l2_set_online,
1438 .set_offline = qeth_l2_set_offline,
1439 .shutdown = qeth_l2_shutdown,
1440 .freeze = qeth_l2_pm_suspend,
1441 .thaw = qeth_l2_pm_resume,
1442 .restore = qeth_l2_pm_resume,
1443 .control_event_handler = qeth_l2_control_event,
1444};
1445EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1446
1447static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1448 struct qeth_cmd_buffer *iob)
1449{
1450 unsigned long flags;
1451 int rc = 0;
1452
1453 QETH_CARD_TEXT(card, 5, "osndctrd");
1454
1455 wait_event(card->wait_q,
1456 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1457 qeth_prepare_control_data(card, len, iob);
1458 QETH_CARD_TEXT(card, 6, "osnoirqp");
1459 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1460 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1461 (addr_t) iob, 0, 0);
1462 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1463 if (rc) {
1464 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1465 "ccw_device_start rc = %i\n", rc);
1466 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1467 qeth_release_buffer(iob->channel, iob);
1468 atomic_set(&card->write.irq_pending, 0);
1469 wake_up(&card->wait_q);
1470 }
1471 return rc;
1472}
1473
1474static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1475 struct qeth_cmd_buffer *iob, int data_len)
1476{
1477 u16 s1, s2;
1478
1479 QETH_CARD_TEXT(card, 4, "osndipa");
1480
1481 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1482 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1483 s2 = (u16)data_len;
1484 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1485 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1486 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1487 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1488 return qeth_osn_send_control_data(card, s1, iob);
1489}
1490
1491int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1492{
1493 struct qeth_cmd_buffer *iob;
1494 struct qeth_card *card;
1495 int rc;
1496
1497 if (!dev)
1498 return -ENODEV;
1499 card = dev->ml_priv;
1500 if (!card)
1501 return -ENODEV;
1502 QETH_CARD_TEXT(card, 2, "osnsdmc");
1503 if (!qeth_card_hw_is_reachable(card))
1504 return -ENODEV;
1505 iob = qeth_wait_for_buffer(&card->write);
1506 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1507 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1508 return rc;
1509}
1510EXPORT_SYMBOL(qeth_osn_assist);
1511
1512int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1513 int (*assist_cb)(struct net_device *, void *),
1514 int (*data_cb)(struct sk_buff *))
1515{
1516 struct qeth_card *card;
1517
1518 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1519 if (*dev == NULL)
1520 return -ENODEV;
1521 card = (*dev)->ml_priv;
1522 if (!card)
1523 return -ENODEV;
1524 QETH_CARD_TEXT(card, 2, "osnreg");
1525 if ((assist_cb == NULL) || (data_cb == NULL))
1526 return -EINVAL;
1527 card->osn_info.assist_cb = assist_cb;
1528 card->osn_info.data_cb = data_cb;
1529 return 0;
1530}
1531EXPORT_SYMBOL(qeth_osn_register);
1532
1533void qeth_osn_deregister(struct net_device *dev)
1534{
1535 struct qeth_card *card;
1536
1537 if (!dev)
1538 return;
1539 card = dev->ml_priv;
1540 if (!card)
1541 return;
1542 QETH_CARD_TEXT(card, 2, "osndereg");
1543 card->osn_info.assist_cb = NULL;
1544 card->osn_info.data_cb = NULL;
1545 return;
1546}
1547EXPORT_SYMBOL(qeth_osn_deregister);
1548
1549/* SETBRIDGEPORT support, async notifications */
1550
1551enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1552
1553/**
1554 * qeth_bridge_emit_host_event() - bridgeport address change notification
1555 * @card: qeth_card structure pointer, for udev events.
1556 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1557 * and reset token and addr_lnid are unused and may be NULL.
1558 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1559 * object, 0 - addition of an object.
1560 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1561 * @token: "network token" structure identifying physical address of the port.
1562 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1563 *
1564 * This function is called when registrations and deregistrations are
1565 * reported by the hardware, and also when notifications are enabled -
1566 * for all currently registered addresses.
1567 */
1568static void qeth_bridge_emit_host_event(struct qeth_card *card,
1569 enum qeth_an_event_type evtype,
1570 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1571{
1572 char str[7][32];
1573 char *env[8];
1574 int i = 0;
1575
1576 switch (evtype) {
1577 case anev_reg_unreg:
1578 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1579 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1580 ? "deregister" : "register");
1581 env[i] = str[i]; i++;
1582 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1583 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1584 addr_lnid->lnid);
1585 env[i] = str[i]; i++;
1586 }
1587 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1588 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1589 addr_lnid->mac);
1590 env[i] = str[i]; i++;
1591 }
1592 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1593 token->cssid, token->ssid, token->devnum);
1594 env[i] = str[i]; i++;
1595 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1596 env[i] = str[i]; i++;
1597 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1598 token->chpid);
1599 env[i] = str[i]; i++;
1600 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1601 env[i] = str[i]; i++;
1602 break;
1603 case anev_abort:
1604 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1605 env[i] = str[i]; i++;
1606 break;
1607 case anev_reset:
1608 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1609 env[i] = str[i]; i++;
1610 break;
1611 }
1612 env[i] = NULL;
1613 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1614}
1615
1616struct qeth_bridge_state_data {
1617 struct work_struct worker;
1618 struct qeth_card *card;
1619 struct qeth_sbp_state_change qports;
1620};
1621
1622static void qeth_bridge_state_change_worker(struct work_struct *work)
1623{
1624 struct qeth_bridge_state_data *data =
1625 container_of(work, struct qeth_bridge_state_data, worker);
1626 /* We are only interested in the first entry - local port */
1627 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1628 char env_locrem[32];
1629 char env_role[32];
1630 char env_state[32];
1631 char *env[] = {
1632 env_locrem,
1633 env_role,
1634 env_state,
1635 NULL
1636 };
1637
1638 /* Role should not change by itself, but if it did, */
1639 /* information from the hardware is authoritative. */
1640 mutex_lock(&data->card->conf_mutex);
1641 data->card->options.sbp.role = entry->role;
1642 mutex_unlock(&data->card->conf_mutex);
1643
1644 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1645 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1646 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1647 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1648 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1649 "<INVALID>");
1650 snprintf(env_state, sizeof(env_state), "STATE=%s",
1651 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1652 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1653 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1654 "<INVALID>");
1655 kobject_uevent_env(&data->card->gdev->dev.kobj,
1656 KOBJ_CHANGE, env);
1657 kfree(data);
1658}
1659
1660static void qeth_bridge_state_change(struct qeth_card *card,
1661 struct qeth_ipa_cmd *cmd)
1662{
1663 struct qeth_sbp_state_change *qports =
1664 &cmd->data.sbp.data.state_change;
1665 struct qeth_bridge_state_data *data;
1666 int extrasize;
1667
1668 QETH_CARD_TEXT(card, 2, "brstchng");
1669 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1670 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1671 return;
1672 }
1673 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1674 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1675 GFP_ATOMIC);
1676 if (!data) {
1677 QETH_CARD_TEXT(card, 2, "BPSalloc");
1678 return;
1679 }
1680 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1681 data->card = card;
1682 memcpy(&data->qports, qports,
1683 sizeof(struct qeth_sbp_state_change) + extrasize);
1684 queue_work(qeth_wq, &data->worker);
1685}
1686
1687struct qeth_bridge_host_data {
1688 struct work_struct worker;
1689 struct qeth_card *card;
1690 struct qeth_ipacmd_addr_change hostevs;
1691};
1692
1693static void qeth_bridge_host_event_worker(struct work_struct *work)
1694{
1695 struct qeth_bridge_host_data *data =
1696 container_of(work, struct qeth_bridge_host_data, worker);
1697 int i;
1698
1699 if (data->hostevs.lost_event_mask) {
1700 dev_info(&data->card->gdev->dev,
1701"Address notification from the Bridge Port stopped %s (%s)\n",
1702 data->card->dev->name,
1703 (data->hostevs.lost_event_mask == 0x01)
1704 ? "Overflow"
1705 : (data->hostevs.lost_event_mask == 0x02)
1706 ? "Bridge port state change"
1707 : "Unknown reason");
1708 mutex_lock(&data->card->conf_mutex);
1709 data->card->options.sbp.hostnotification = 0;
1710 mutex_unlock(&data->card->conf_mutex);
1711 qeth_bridge_emit_host_event(data->card, anev_abort,
1712 0, NULL, NULL);
1713 } else
1714 for (i = 0; i < data->hostevs.num_entries; i++) {
1715 struct qeth_ipacmd_addr_change_entry *entry =
1716 &data->hostevs.entry[i];
1717 qeth_bridge_emit_host_event(data->card,
1718 anev_reg_unreg,
1719 entry->change_code,
1720 &entry->token, &entry->addr_lnid);
1721 }
1722 kfree(data);
1723}
1724
1725static void qeth_bridge_host_event(struct qeth_card *card,
1726 struct qeth_ipa_cmd *cmd)
1727{
1728 struct qeth_ipacmd_addr_change *hostevs =
1729 &cmd->data.addrchange;
1730 struct qeth_bridge_host_data *data;
1731 int extrasize;
1732
1733 QETH_CARD_TEXT(card, 2, "brhostev");
1734 if (cmd->hdr.return_code != 0x0000) {
1735 if (cmd->hdr.return_code == 0x0010) {
1736 if (hostevs->lost_event_mask == 0x00)
1737 hostevs->lost_event_mask = 0xff;
1738 } else {
1739 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1740 cmd->hdr.return_code);
1741 return;
1742 }
1743 }
1744 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1745 hostevs->num_entries;
1746 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1747 GFP_ATOMIC);
1748 if (!data) {
1749 QETH_CARD_TEXT(card, 2, "BPHalloc");
1750 return;
1751 }
1752 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1753 data->card = card;
1754 memcpy(&data->hostevs, hostevs,
1755 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1756 queue_work(qeth_wq, &data->worker);
1757}
1758
1759/* SETBRIDGEPORT support; sending commands */
1760
1761struct _qeth_sbp_cbctl {
1762 u16 ipa_rc;
1763 u16 cmd_rc;
1764 union {
1765 u32 supported;
1766 struct {
1767 enum qeth_sbp_roles *role;
1768 enum qeth_sbp_states *state;
1769 } qports;
1770 } data;
1771};
1772
1773/**
1774 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1775 * @card: qeth_card structure pointer, for debug messages.
1776 * @cbctl: state structure with hardware return codes.
1777 * @setcmd: IPA command code
1778 *
1779 * Returns negative errno-compatible error indication or 0 on success.
1780 */
1781static int qeth_bridgeport_makerc(struct qeth_card *card,
1782 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1783{
1784 int rc;
1785 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1786
1787 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1788 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1789 switch (cbctl->cmd_rc) {
1790 case 0x0000:
1791 rc = 0;
1792 break;
1793 case 0x2B04:
1794 case 0x0004:
1795 rc = -EOPNOTSUPP;
1796 break;
1797 case 0x2B0C:
1798 case 0x000C: /* Not configured as bridge Port */
1799 rc = -ENODEV; /* maybe not the best code here? */
1800 dev_err(&card->gdev->dev,
1801 "The device is not configured as a Bridge Port\n");
1802 break;
1803 case 0x2B14:
1804 case 0x0014: /* Another device is Primary */
1805 switch (setcmd) {
1806 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1807 rc = -EEXIST;
1808 dev_err(&card->gdev->dev,
1809 "The LAN already has a primary Bridge Port\n");
1810 break;
1811 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1812 rc = -EBUSY;
1813 dev_err(&card->gdev->dev,
1814 "The device is already a primary Bridge Port\n");
1815 break;
1816 default:
1817 rc = -EIO;
1818 }
1819 break;
1820 case 0x2B18:
1821 case 0x0018: /* This device is currently Secondary */
1822 rc = -EBUSY;
1823 dev_err(&card->gdev->dev,
1824 "The device is already a secondary Bridge Port\n");
1825 break;
1826 case 0x2B1C:
1827 case 0x001C: /* Limit for Secondary devices reached */
1828 rc = -EEXIST;
1829 dev_err(&card->gdev->dev,
1830 "The LAN cannot have more secondary Bridge Ports\n");
1831 break;
1832 case 0x2B24:
1833 case 0x0024: /* This device is currently Primary */
1834 rc = -EBUSY;
1835 dev_err(&card->gdev->dev,
1836 "The device is already a primary Bridge Port\n");
1837 break;
1838 case 0x2B20:
1839 case 0x0020: /* Not authorized by zManager */
1840 rc = -EACCES;
1841 dev_err(&card->gdev->dev,
1842 "The device is not authorized to be a Bridge Port\n");
1843 break;
1844 default:
1845 rc = -EIO;
1846 }
1847 else
1848 switch (cbctl->ipa_rc) {
1849 case IPA_RC_NOTSUPP:
1850 rc = -EOPNOTSUPP;
1851 break;
1852 case IPA_RC_UNSUPPORTED_COMMAND:
1853 rc = -EOPNOTSUPP;
1854 break;
1855 default:
1856 rc = -EIO;
1857 }
1858
1859 if (rc) {
1860 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1861 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1862 }
1863 return rc;
1864}
1865
1866static inline int ipa_cmd_sbp(struct qeth_card *card)
1867{
1868 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1869 IPA_CMD_SETBRIDGEPORT_IQD :
1870 IPA_CMD_SETBRIDGEPORT_OSA;
1871}
1872
1873static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1874 struct qeth_reply *reply, unsigned long data)
1875{
1876 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1877 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1878 QETH_CARD_TEXT(card, 2, "brqsupcb");
1879 cbctl->ipa_rc = cmd->hdr.return_code;
1880 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1881 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1882 cbctl->data.supported =
1883 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1884 } else {
1885 cbctl->data.supported = 0;
1886 }
1887 return 0;
1888}
1889
1890/**
1891 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1892 * @card: qeth_card structure pointer.
1893 *
1894 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1895 * strucutre: card->options.sbp.supported_funcs.
1896 */
1897static void qeth_bridgeport_query_support(struct qeth_card *card)
1898{
1899 struct qeth_cmd_buffer *iob;
1900 struct qeth_ipa_cmd *cmd;
1901 struct _qeth_sbp_cbctl cbctl;
1902
1903 QETH_CARD_TEXT(card, 2, "brqsuppo");
1904 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1905 if (!iob)
1906 return;
1907 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1908 cmd->data.sbp.hdr.cmdlength =
1909 sizeof(struct qeth_ipacmd_sbp_hdr) +
1910 sizeof(struct qeth_sbp_query_cmds_supp);
1911 cmd->data.sbp.hdr.command_code =
1912 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1913 cmd->data.sbp.hdr.used_total = 1;
1914 cmd->data.sbp.hdr.seq_no = 1;
1915 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1916 (void *)&cbctl) ||
1917 qeth_bridgeport_makerc(card, &cbctl,
1918 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1919 /* non-zero makerc signifies failure, and produce messages */
1920 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1921 return;
1922 }
1923 card->options.sbp.supported_funcs = cbctl.data.supported;
1924}
1925
1926static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1927 struct qeth_reply *reply, unsigned long data)
1928{
1929 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1930 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1931 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1932
1933 QETH_CARD_TEXT(card, 2, "brqprtcb");
1934 cbctl->ipa_rc = cmd->hdr.return_code;
1935 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1936 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1937 return 0;
1938 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1939 cbctl->cmd_rc = 0xffff;
1940 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1941 return 0;
1942 }
1943 /* first entry contains the state of the local port */
1944 if (qports->num_entries > 0) {
1945 if (cbctl->data.qports.role)
1946 *cbctl->data.qports.role = qports->entry[0].role;
1947 if (cbctl->data.qports.state)
1948 *cbctl->data.qports.state = qports->entry[0].state;
1949 }
1950 return 0;
1951}
1952
1953/**
1954 * qeth_bridgeport_query_ports() - query local bridgeport status.
1955 * @card: qeth_card structure pointer.
1956 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1957 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1958 *
1959 * Returns negative errno-compatible error indication or 0 on success.
1960 *
1961 * 'role' and 'state' are not updated in case of hardware operation failure.
1962 */
1963int qeth_bridgeport_query_ports(struct qeth_card *card,
1964 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1965{
1966 int rc = 0;
1967 struct qeth_cmd_buffer *iob;
1968 struct qeth_ipa_cmd *cmd;
1969 struct _qeth_sbp_cbctl cbctl = {
1970 .data = {
1971 .qports = {
1972 .role = role,
1973 .state = state,
1974 },
1975 },
1976 };
1977
1978 QETH_CARD_TEXT(card, 2, "brqports");
1979 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1980 return -EOPNOTSUPP;
1981 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1982 if (!iob)
1983 return -ENOMEM;
1984 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1985 cmd->data.sbp.hdr.cmdlength =
1986 sizeof(struct qeth_ipacmd_sbp_hdr);
1987 cmd->data.sbp.hdr.command_code =
1988 IPA_SBP_QUERY_BRIDGE_PORTS;
1989 cmd->data.sbp.hdr.used_total = 1;
1990 cmd->data.sbp.hdr.seq_no = 1;
1991 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1992 (void *)&cbctl);
1993 if (rc < 0)
1994 return rc;
1995 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1996}
1997EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1998
1999static int qeth_bridgeport_set_cb(struct qeth_card *card,
2000 struct qeth_reply *reply, unsigned long data)
2001{
2002 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
2003 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
2004 QETH_CARD_TEXT(card, 2, "brsetrcb");
2005 cbctl->ipa_rc = cmd->hdr.return_code;
2006 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
2007 return 0;
2008}
2009
2010/**
2011 * qeth_bridgeport_setrole() - Assign primary role to the port.
2012 * @card: qeth_card structure pointer.
2013 * @role: Role to assign.
2014 *
2015 * Returns negative errno-compatible error indication or 0 on success.
2016 */
2017int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
2018{
2019 int rc = 0;
2020 int cmdlength;
2021 struct qeth_cmd_buffer *iob;
2022 struct qeth_ipa_cmd *cmd;
2023 struct _qeth_sbp_cbctl cbctl;
2024 enum qeth_ipa_sbp_cmd setcmd;
2025
2026 QETH_CARD_TEXT(card, 2, "brsetrol");
2027 switch (role) {
2028 case QETH_SBP_ROLE_NONE:
2029 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
2030 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2031 sizeof(struct qeth_sbp_reset_role);
2032 break;
2033 case QETH_SBP_ROLE_PRIMARY:
2034 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
2035 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2036 sizeof(struct qeth_sbp_set_primary);
2037 break;
2038 case QETH_SBP_ROLE_SECONDARY:
2039 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
2040 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2041 sizeof(struct qeth_sbp_set_secondary);
2042 break;
2043 default:
2044 return -EINVAL;
2045 }
2046 if (!(card->options.sbp.supported_funcs & setcmd))
2047 return -EOPNOTSUPP;
2048 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
2049 if (!iob)
2050 return -ENOMEM;
2051 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2052 cmd->data.sbp.hdr.cmdlength = cmdlength;
2053 cmd->data.sbp.hdr.command_code = setcmd;
2054 cmd->data.sbp.hdr.used_total = 1;
2055 cmd->data.sbp.hdr.seq_no = 1;
2056 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
2057 (void *)&cbctl);
2058 if (rc < 0)
2059 return rc;
2060 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
2061}
2062
2063/**
2064 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
2065 * @card: qeth_card structure pointer, for debug messages.
2066 *
2067 * Returns negative errno-compatible error indication or 0 on success.
2068 */
2069static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2070{
2071 int rc;
2072
2073 if (pnso_rc == 0)
2074 switch (response) {
2075 case 0x0001:
2076 rc = 0;
2077 break;
2078 case 0x0004:
2079 case 0x0100:
2080 case 0x0106:
2081 rc = -EOPNOTSUPP;
2082 dev_err(&card->gdev->dev,
2083 "Setting address notification failed\n");
2084 break;
2085 case 0x0107:
2086 rc = -EAGAIN;
2087 break;
2088 default:
2089 rc = -EIO;
2090 }
2091 else
2092 rc = -EIO;
2093
2094 if (rc) {
2095 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2096 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2097 }
2098 return rc;
2099}
2100
2101static void qeth_bridgeport_an_set_cb(void *priv,
2102 enum qdio_brinfo_entry_type type, void *entry)
2103{
2104 struct qeth_card *card = (struct qeth_card *)priv;
2105 struct qdio_brinfo_entry_l2 *l2entry;
2106 u8 code;
2107
2108 if (type != l2_addr_lnid) {
2109 WARN_ON_ONCE(1);
2110 return;
2111 }
2112
2113 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2114 code = IPA_ADDR_CHANGE_CODE_MACADDR;
2115 if (l2entry->addr_lnid.lnid)
2116 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2117 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2118 (struct net_if_token *)&l2entry->nit,
2119 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2120}
2121
2122/**
2123 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2124 * @card: qeth_card structure pointer.
2125 * @enable: 0 - disable, non-zero - enable notifications
2126 *
2127 * Returns negative errno-compatible error indication or 0 on success.
2128 *
2129 * On enable, emits a series of address notifications udev events for all
2130 * currently registered hosts.
2131 */
2132int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2133{
2134 int rc;
2135 u16 response;
2136 struct ccw_device *ddev;
2137 struct subchannel_id schid;
2138
2139 if (!card)
2140 return -EINVAL;
2141 if (!card->options.sbp.supported_funcs)
2142 return -EOPNOTSUPP;
2143 ddev = CARD_DDEV(card);
2144 ccw_device_get_schid(ddev, &schid);
2145
2146 if (enable) {
2147 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2148 rc = qdio_pnso_brinfo(schid, 1, &response,
2149 qeth_bridgeport_an_set_cb, card);
2150 } else
2151 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2152 return qeth_anset_makerc(card, rc, response);
2153}
2154EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2155
2156module_init(qeth_l2_init);
2157module_exit(qeth_l2_exit);
2158MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2159MODULE_DESCRIPTION("qeth layer 2 discipline");
2160MODULE_LICENSE("GPL");