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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / s390 / net / qeth_l2_main.c
blob7f236440483f2ca6fdc82caf5d21b649f8434471
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/ip.h>
21 #include <linux/list.h>
22 #include <linux/hash.h>
23 #include <linux/hashtable.h>
24 #include <linux/string.h>
25 #include <asm/setup.h>
26 #include "qeth_core.h"
27 #include "qeth_l2.h"
28
29 static int qeth_l2_set_offline(struct ccwgroup_device *);
30 static int qeth_l2_stop(struct net_device *);
31 static void qeth_l2_set_rx_mode(struct net_device *);
32 static void qeth_bridgeport_query_support(struct qeth_card *card);
33 static void qeth_bridge_state_change(struct qeth_card *card,
34 struct qeth_ipa_cmd *cmd);
35 static void qeth_bridge_host_event(struct qeth_card *card,
36 struct qeth_ipa_cmd *cmd);
37 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card);
38 static void qeth_l2_vnicc_init(struct qeth_card *card);
39 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
40 u32 *timeout);
41
42 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
43 {
44 struct qeth_card *card;
45 struct net_device *ndev;
46 __u16 temp_dev_no;
47 unsigned long flags;
48 struct ccw_dev_id read_devid;
49
50 ndev = NULL;
51 memcpy(&temp_dev_no, read_dev_no, 2);
52 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
53 list_for_each_entry(card, &qeth_core_card_list.list, list) {
54 ccw_device_get_id(CARD_RDEV(card), &read_devid);
55 if (read_devid.devno == temp_dev_no) {
56 ndev = card->dev;
57 break;
58 }
59 }
60 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
61 return ndev;
62 }
63
64 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode)
65 {
66 int rc;
67
68 if (retcode)
69 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
70 switch (retcode) {
71 case IPA_RC_SUCCESS:
72 rc = 0;
73 break;
74 case IPA_RC_L2_UNSUPPORTED_CMD:
75 rc = -EOPNOTSUPP;
76 break;
77 case IPA_RC_L2_ADDR_TABLE_FULL:
78 rc = -ENOSPC;
79 break;
80 case IPA_RC_L2_DUP_MAC:
81 case IPA_RC_L2_DUP_LAYER3_MAC:
82 rc = -EEXIST;
83 break;
84 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
85 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
86 rc = -EPERM;
87 break;
88 case IPA_RC_L2_MAC_NOT_FOUND:
89 rc = -ENOENT;
90 break;
91 case -ENOMEM:
92 rc = -ENOMEM;
93 break;
94 default:
95 rc = -EIO;
96 break;
97 }
98 return rc;
99 }
100
101 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
102 enum qeth_ipa_cmds ipacmd)
103 {
104 struct qeth_ipa_cmd *cmd;
105 struct qeth_cmd_buffer *iob;
106
107 QETH_CARD_TEXT(card, 2, "L2sdmac");
108 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
109 if (!iob)
110 return -ENOMEM;
111 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
112 cmd->data.setdelmac.mac_length = ETH_ALEN;
113 ether_addr_copy(cmd->data.setdelmac.mac, mac);
114 return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob,
115 NULL, NULL));
116 }
117
118 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
119 {
120 int rc;
121
122 QETH_CARD_TEXT(card, 2, "L2Setmac");
123 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
124 if (rc == 0) {
125 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
126 ether_addr_copy(card->dev->dev_addr, mac);
127 dev_info(&card->gdev->dev,
128 "MAC address %pM successfully registered on device %s\n",
129 card->dev->dev_addr, card->dev->name);
130 } else {
131 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
132 switch (rc) {
133 case -EEXIST:
134 dev_warn(&card->gdev->dev,
135 "MAC address %pM already exists\n", mac);
136 break;
137 case -EPERM:
138 dev_warn(&card->gdev->dev,
139 "MAC address %pM is not authorized\n", mac);
140 break;
141 }
142 }
143 return rc;
144 }
145
146 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
147 {
148 int rc;
149
150 QETH_CARD_TEXT(card, 2, "L2Delmac");
151 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
152 return 0;
153 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC);
154 if (rc == 0)
155 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
156 return rc;
157 }
158
159 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
160 {
161 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ?
162 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
163 int rc;
164
165 QETH_CARD_TEXT(card, 2, "L2Wmac");
166 rc = qeth_l2_send_setdelmac(card, mac, cmd);
167 if (rc == -EEXIST)
168 QETH_DBF_MESSAGE(2, "MAC %pM already registered on %s\n",
169 mac, QETH_CARD_IFNAME(card));
170 else if (rc)
171 QETH_DBF_MESSAGE(2, "Failed to register MAC %pM on %s: %d\n",
172 mac, QETH_CARD_IFNAME(card), rc);
173 return rc;
174 }
175
176 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
177 {
178 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ?
179 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
180 int rc;
181
182 QETH_CARD_TEXT(card, 2, "L2Rmac");
183 rc = qeth_l2_send_setdelmac(card, mac, cmd);
184 if (rc)
185 QETH_DBF_MESSAGE(2, "Failed to delete MAC %pM on %s: %d\n",
186 mac, QETH_CARD_IFNAME(card), rc);
187 return rc;
188 }
189
190 static void qeth_l2_del_all_macs(struct qeth_card *card)
191 {
192 struct qeth_mac *mac;
193 struct hlist_node *tmp;
194 int i;
195
196 spin_lock_bh(&card->mclock);
197 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
198 hash_del(&mac->hnode);
199 kfree(mac);
200 }
201 spin_unlock_bh(&card->mclock);
202 }
203
204 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
205 {
206 if (card->info.type == QETH_CARD_TYPE_OSN)
207 return RTN_UNSPEC;
208 if (is_broadcast_ether_addr(skb->data))
209 return RTN_BROADCAST;
210 if (is_multicast_ether_addr(skb->data))
211 return RTN_MULTICAST;
212 return RTN_UNSPEC;
213 }
214
215 static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr,
216 struct sk_buff *skb)
217 {
218 struct iphdr *iph = ip_hdr(skb);
219
220 /* tcph->check contains already the pseudo hdr checksum
221 * so just set the header flags
222 */
223 if (iph->protocol == IPPROTO_UDP)
224 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
225 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
226 QETH_HDR_EXT_CSUM_HDR_REQ;
227 iph->check = 0;
228 if (card->options.performance_stats)
229 card->perf_stats.tx_csum++;
230 }
231
232 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb,
233 int cast_type, unsigned int data_len)
234 {
235 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
236
237 memset(hdr, 0, sizeof(struct qeth_hdr));
238 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
239 hdr->hdr.l2.pkt_length = data_len;
240
241 /* set byte byte 3 to casting flags */
242 if (cast_type == RTN_MULTICAST)
243 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
244 else if (cast_type == RTN_BROADCAST)
245 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
246 else
247 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
248
249 /* VSWITCH relies on the VLAN
250 * information to be present in
251 * the QDIO header */
252 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
254 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
255 }
256 }
257
258 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode)
259 {
260 if (retcode)
261 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
262
263 switch (retcode) {
264 case IPA_RC_SUCCESS:
265 return 0;
266 case IPA_RC_L2_INVALID_VLAN_ID:
267 return -EINVAL;
268 case IPA_RC_L2_DUP_VLAN_ID:
269 return -EEXIST;
270 case IPA_RC_L2_VLAN_ID_NOT_FOUND:
271 return -ENOENT;
272 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
273 return -EPERM;
274 case -ENOMEM:
275 return -ENOMEM;
276 default:
277 return -EIO;
278 }
279 }
280
281 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
282 struct qeth_reply *reply,
283 unsigned long data)
284 {
285 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
286
287 QETH_CARD_TEXT(card, 2, "L2sdvcb");
288 if (cmd->hdr.return_code) {
289 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n",
290 cmd->data.setdelvlan.vlan_id,
291 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
292 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
293 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
294 }
295 return 0;
296 }
297
298 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
299 enum qeth_ipa_cmds ipacmd)
300 {
301 struct qeth_ipa_cmd *cmd;
302 struct qeth_cmd_buffer *iob;
303
304 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
305 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
306 if (!iob)
307 return -ENOMEM;
308 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
309 cmd->data.setdelvlan.vlan_id = i;
310 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob,
311 qeth_l2_send_setdelvlan_cb, NULL));
312 }
313
314 static void qeth_l2_process_vlans(struct qeth_card *card)
315 {
316 struct qeth_vlan_vid *id;
317 QETH_CARD_TEXT(card, 3, "L2prcvln");
318 spin_lock_bh(&card->vlanlock);
319 list_for_each_entry(id, &card->vid_list, list) {
320 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
321 }
322 spin_unlock_bh(&card->vlanlock);
323 }
324
325 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
326 __be16 proto, u16 vid)
327 {
328 struct qeth_card *card = dev->ml_priv;
329 struct qeth_vlan_vid *id;
330 int rc;
331
332 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
333 if (!vid)
334 return 0;
335 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
336 QETH_CARD_TEXT(card, 3, "aidREC");
337 return 0;
338 }
339 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
340 if (id) {
341 id->vid = vid;
342 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
343 if (rc) {
344 kfree(id);
345 return rc;
346 }
347 spin_lock_bh(&card->vlanlock);
348 list_add_tail(&id->list, &card->vid_list);
349 spin_unlock_bh(&card->vlanlock);
350 } else {
351 return -ENOMEM;
352 }
353 return 0;
354 }
355
356 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
357 __be16 proto, u16 vid)
358 {
359 struct qeth_vlan_vid *id, *tmpid = NULL;
360 struct qeth_card *card = dev->ml_priv;
361 int rc = 0;
362
363 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
364 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
365 QETH_CARD_TEXT(card, 3, "kidREC");
366 return 0;
367 }
368 spin_lock_bh(&card->vlanlock);
369 list_for_each_entry(id, &card->vid_list, list) {
370 if (id->vid == vid) {
371 list_del(&id->list);
372 tmpid = id;
373 break;
374 }
375 }
376 spin_unlock_bh(&card->vlanlock);
377 if (tmpid) {
378 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
379 kfree(tmpid);
380 }
381 qeth_l2_set_rx_mode(card->dev);
382 return rc;
383 }
384
385 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
386 {
387 QETH_DBF_TEXT(SETUP , 2, "stopcard");
388 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
389
390 qeth_set_allowed_threads(card, 0, 1);
391 if (card->read.state == CH_STATE_UP &&
392 card->write.state == CH_STATE_UP &&
393 (card->state == CARD_STATE_UP)) {
394 if (recovery_mode &&
395 card->info.type != QETH_CARD_TYPE_OSN) {
396 qeth_l2_stop(card->dev);
397 } else {
398 rtnl_lock();
399 dev_close(card->dev);
400 rtnl_unlock();
401 }
402 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
403 card->state = CARD_STATE_SOFTSETUP;
404 }
405 if (card->state == CARD_STATE_SOFTSETUP) {
406 qeth_l2_del_all_macs(card);
407 qeth_clear_ipacmd_list(card);
408 card->state = CARD_STATE_HARDSETUP;
409 }
410 if (card->state == CARD_STATE_HARDSETUP) {
411 qeth_qdio_clear_card(card, 0);
412 qeth_clear_qdio_buffers(card);
413 qeth_clear_working_pool_list(card);
414 card->state = CARD_STATE_DOWN;
415 }
416 if (card->state == CARD_STATE_DOWN) {
417 qeth_clear_cmd_buffers(&card->read);
418 qeth_clear_cmd_buffers(&card->write);
419 }
420 }
421
422 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
423 int budget, int *done)
424 {
425 int work_done = 0;
426 struct sk_buff *skb;
427 struct qeth_hdr *hdr;
428 unsigned int len;
429
430 *done = 0;
431 WARN_ON_ONCE(!budget);
432 while (budget) {
433 skb = qeth_core_get_next_skb(card,
434 &card->qdio.in_q->bufs[card->rx.b_index],
435 &card->rx.b_element, &card->rx.e_offset, &hdr);
436 if (!skb) {
437 *done = 1;
438 break;
439 }
440 skb->dev = card->dev;
441 switch (hdr->hdr.l2.id) {
442 case QETH_HEADER_TYPE_LAYER2:
443 skb->pkt_type = PACKET_HOST;
444 skb->protocol = eth_type_trans(skb, skb->dev);
445 if ((card->dev->features & NETIF_F_RXCSUM)
446 && ((hdr->hdr.l2.flags[1] &
447 (QETH_HDR_EXT_CSUM_HDR_REQ |
448 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
449 (QETH_HDR_EXT_CSUM_HDR_REQ |
450 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
451 skb->ip_summed = CHECKSUM_UNNECESSARY;
452 else
453 skb->ip_summed = CHECKSUM_NONE;
454 if (skb->protocol == htons(ETH_P_802_2))
455 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
456 len = skb->len;
457 napi_gro_receive(&card->napi, skb);
458 break;
459 case QETH_HEADER_TYPE_OSN:
460 if (card->info.type == QETH_CARD_TYPE_OSN) {
461 skb_push(skb, sizeof(struct qeth_hdr));
462 skb_copy_to_linear_data(skb, hdr,
463 sizeof(struct qeth_hdr));
464 len = skb->len;
465 card->osn_info.data_cb(skb);
466 break;
467 }
468 /* else unknown */
469 default:
470 dev_kfree_skb_any(skb);
471 QETH_CARD_TEXT(card, 3, "inbunkno");
472 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
473 continue;
474 }
475 work_done++;
476 budget--;
477 card->stats.rx_packets++;
478 card->stats.rx_bytes += len;
479 }
480 return work_done;
481 }
482
483 static int qeth_l2_request_initial_mac(struct qeth_card *card)
484 {
485 int rc = 0;
486 char vendor_pre[] = {0x02, 0x00, 0x00};
487
488 QETH_DBF_TEXT(SETUP, 2, "l2reqmac");
489 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
490
491 if (MACHINE_IS_VM) {
492 rc = qeth_vm_request_mac(card);
493 if (!rc)
494 goto out;
495 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n",
496 CARD_BUS_ID(card), rc);
497 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc);
498 /* fall back to alternative mechanism: */
499 }
500
501 if (card->info.type == QETH_CARD_TYPE_IQD ||
502 card->info.type == QETH_CARD_TYPE_OSM ||
503 card->info.type == QETH_CARD_TYPE_OSX ||
504 card->info.guestlan) {
505 rc = qeth_setadpparms_change_macaddr(card);
506 if (rc) {
507 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
508 "device %s: x%x\n", CARD_BUS_ID(card), rc);
509 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
510 return rc;
511 }
512 } else {
513 eth_random_addr(card->dev->dev_addr);
514 memcpy(card->dev->dev_addr, vendor_pre, 3);
515 }
516 out:
517 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len);
518 return 0;
519 }
520
521 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
522 {
523 struct sockaddr *addr = p;
524 struct qeth_card *card = dev->ml_priv;
525 int rc = 0;
526
527 QETH_CARD_TEXT(card, 3, "setmac");
528
529 if (card->info.type == QETH_CARD_TYPE_OSN ||
530 card->info.type == QETH_CARD_TYPE_OSM ||
531 card->info.type == QETH_CARD_TYPE_OSX) {
532 QETH_CARD_TEXT(card, 3, "setmcTYP");
533 return -EOPNOTSUPP;
534 }
535 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN);
536 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
537 QETH_CARD_TEXT(card, 3, "setmcREC");
538 return -ERESTARTSYS;
539 }
540 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
541 if (!rc || (rc == -ENOENT))
542 rc = qeth_l2_send_setmac(card, addr->sa_data);
543 return rc ? -EINVAL : 0;
544 }
545
546 static void qeth_promisc_to_bridge(struct qeth_card *card)
547 {
548 struct net_device *dev = card->dev;
549 enum qeth_ipa_promisc_modes promisc_mode;
550 int role;
551 int rc;
552
553 QETH_CARD_TEXT(card, 3, "pmisc2br");
554
555 if (!card->options.sbp.reflect_promisc)
556 return;
557 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
558 : SET_PROMISC_MODE_OFF;
559 if (promisc_mode == card->info.promisc_mode)
560 return;
561
562 if (promisc_mode == SET_PROMISC_MODE_ON) {
563 if (card->options.sbp.reflect_promisc_primary)
564 role = QETH_SBP_ROLE_PRIMARY;
565 else
566 role = QETH_SBP_ROLE_SECONDARY;
567 } else
568 role = QETH_SBP_ROLE_NONE;
569
570 rc = qeth_bridgeport_setrole(card, role);
571 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
572 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
573 if (!rc) {
574 card->options.sbp.role = role;
575 card->info.promisc_mode = promisc_mode;
576 }
577
578 }
579 /* New MAC address is added to the hash table and marked to be written on card
580 * only if there is not in the hash table storage already
581 *
582 */
583 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha)
584 {
585 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
586 struct qeth_mac *mac;
587
588 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) {
589 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) {
590 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
591 return;
592 }
593 }
594
595 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
596 if (!mac)
597 return;
598
599 ether_addr_copy(mac->mac_addr, ha->addr);
600 mac->disp_flag = QETH_DISP_ADDR_ADD;
601
602 hash_add(card->mac_htable, &mac->hnode, mac_hash);
603 }
604
605 static void qeth_l2_set_rx_mode(struct net_device *dev)
606 {
607 struct qeth_card *card = dev->ml_priv;
608 struct netdev_hw_addr *ha;
609 struct qeth_mac *mac;
610 struct hlist_node *tmp;
611 int i;
612 int rc;
613
614 if (card->info.type == QETH_CARD_TYPE_OSN)
615 return;
616
617 QETH_CARD_TEXT(card, 3, "setmulti");
618 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
619 (card->state != CARD_STATE_UP))
620 return;
621
622 spin_lock_bh(&card->mclock);
623
624 netdev_for_each_mc_addr(ha, dev)
625 qeth_l2_add_mac(card, ha);
626 netdev_for_each_uc_addr(ha, dev)
627 qeth_l2_add_mac(card, ha);
628
629 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
630 switch (mac->disp_flag) {
631 case QETH_DISP_ADDR_DELETE:
632 qeth_l2_remove_mac(card, mac->mac_addr);
633 hash_del(&mac->hnode);
634 kfree(mac);
635 break;
636 case QETH_DISP_ADDR_ADD:
637 rc = qeth_l2_write_mac(card, mac->mac_addr);
638 if (rc) {
639 hash_del(&mac->hnode);
640 kfree(mac);
641 break;
642 }
643 /* fall through */
644 default:
645 /* for next call to set_rx_mode(): */
646 mac->disp_flag = QETH_DISP_ADDR_DELETE;
647 }
648 }
649
650 spin_unlock_bh(&card->mclock);
651
652 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
653 qeth_setadp_promisc_mode(card);
654 else
655 qeth_promisc_to_bridge(card);
656 }
657
658 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb,
659 struct qeth_qdio_out_q *queue, int cast_type)
660 {
661 unsigned int data_offset = ETH_HLEN;
662 struct qeth_hdr *hdr;
663 int rc;
664
665 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
666 if (!hdr)
667 return -ENOMEM;
668 qeth_l2_fill_header(hdr, skb, cast_type, skb->len);
669 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr),
670 data_offset);
671
672 if (!qeth_get_elements_no(card, skb, 1, data_offset)) {
673 rc = -E2BIG;
674 goto out;
675 }
676 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
677 sizeof(*hdr) + data_offset);
678 out:
679 if (rc)
680 kmem_cache_free(qeth_core_header_cache, hdr);
681 return rc;
682 }
683
684 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb,
685 struct qeth_qdio_out_q *queue, int cast_type)
686 {
687 int push_len = sizeof(struct qeth_hdr);
688 unsigned int elements, nr_frags;
689 unsigned int hdr_elements = 0;
690 struct qeth_hdr *hdr = NULL;
691 unsigned int hd_len = 0;
692 int rc;
693
694 /* fix hardware limitation: as long as we do not have sbal
695 * chaining we can not send long frag lists
696 */
697 if (!qeth_get_elements_no(card, skb, 0, 0)) {
698 rc = skb_linearize(skb);
699
700 if (card->options.performance_stats) {
701 if (rc)
702 card->perf_stats.tx_linfail++;
703 else
704 card->perf_stats.tx_lin++;
705 }
706 if (rc)
707 return rc;
708 }
709 nr_frags = skb_shinfo(skb)->nr_frags;
710
711 rc = skb_cow_head(skb, push_len);
712 if (rc)
713 return rc;
714 push_len = qeth_push_hdr(skb, &hdr, push_len);
715 if (push_len < 0)
716 return push_len;
717 if (!push_len) {
718 /* hdr was allocated from cache */
719 hd_len = sizeof(*hdr);
720 hdr_elements = 1;
721 }
722 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len);
723 if (skb->ip_summed == CHECKSUM_PARTIAL)
724 qeth_l2_hdr_csum(card, hdr, skb);
725
726 elements = qeth_get_elements_no(card, skb, hdr_elements, 0);
727 if (!elements) {
728 rc = -E2BIG;
729 goto out;
730 }
731 elements += hdr_elements;
732
733 /* TODO: remove the skb_orphan() once TX completion is fast enough */
734 skb_orphan(skb);
735 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements);
736 out:
737 if (!rc) {
738 if (card->options.performance_stats && nr_frags) {
739 card->perf_stats.sg_skbs_sent++;
740 /* nr_frags + skb->data */
741 card->perf_stats.sg_frags_sent += nr_frags + 1;
742 }
743 } else {
744 if (hd_len)
745 kmem_cache_free(qeth_core_header_cache, hdr);
746 if (rc == -EBUSY)
747 /* roll back to ETH header */
748 skb_pull(skb, push_len);
749 }
750 return rc;
751 }
752
753 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
754 struct qeth_qdio_out_q *queue)
755 {
756 unsigned int elements;
757 struct qeth_hdr *hdr;
758
759 if (skb->protocol == htons(ETH_P_IPV6))
760 return -EPROTONOSUPPORT;
761
762 hdr = (struct qeth_hdr *)skb->data;
763 elements = qeth_get_elements_no(card, skb, 0, 0);
764 if (!elements)
765 return -E2BIG;
766 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr)))
767 return -EINVAL;
768 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements);
769 }
770
771 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
772 struct net_device *dev)
773 {
774 struct qeth_card *card = dev->ml_priv;
775 int cast_type = qeth_l2_get_cast_type(card, skb);
776 struct qeth_qdio_out_q *queue;
777 int tx_bytes = skb->len;
778 int rc;
779
780 if (card->qdio.do_prio_queueing || (cast_type &&
781 card->info.is_multicast_different))
782 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
783 qeth_get_ip_version(skb), cast_type)];
784 else
785 queue = card->qdio.out_qs[card->qdio.default_out_queue];
786
787 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
788 card->stats.tx_carrier_errors++;
789 goto tx_drop;
790 }
791
792 if (card->options.performance_stats) {
793 card->perf_stats.outbound_cnt++;
794 card->perf_stats.outbound_start_time = qeth_get_micros();
795 }
796 netif_stop_queue(dev);
797
798 switch (card->info.type) {
799 case QETH_CARD_TYPE_OSN:
800 rc = qeth_l2_xmit_osn(card, skb, queue);
801 break;
802 case QETH_CARD_TYPE_IQD:
803 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type);
804 break;
805 default:
806 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type);
807 }
808
809 if (!rc) {
810 card->stats.tx_packets++;
811 card->stats.tx_bytes += tx_bytes;
812 if (card->options.performance_stats)
813 card->perf_stats.outbound_time += qeth_get_micros() -
814 card->perf_stats.outbound_start_time;
815 netif_wake_queue(dev);
816 return NETDEV_TX_OK;
817 } else if (rc == -EBUSY) {
818 return NETDEV_TX_BUSY;
819 } /* else fall through */
820
821 tx_drop:
822 card->stats.tx_dropped++;
823 card->stats.tx_errors++;
824 dev_kfree_skb_any(skb);
825 netif_wake_queue(dev);
826 return NETDEV_TX_OK;
827 }
828
829 static int __qeth_l2_open(struct net_device *dev)
830 {
831 struct qeth_card *card = dev->ml_priv;
832 int rc = 0;
833
834 QETH_CARD_TEXT(card, 4, "qethopen");
835 if (card->state == CARD_STATE_UP)
836 return rc;
837 if (card->state != CARD_STATE_SOFTSETUP)
838 return -ENODEV;
839
840 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
841 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
842 QETH_CARD_TEXT(card, 4, "nomacadr");
843 return -EPERM;
844 }
845 card->data.state = CH_STATE_UP;
846 card->state = CARD_STATE_UP;
847 netif_start_queue(dev);
848
849 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
850 napi_enable(&card->napi);
851 napi_schedule(&card->napi);
852 } else
853 rc = -EIO;
854 return rc;
855 }
856
857 static int qeth_l2_open(struct net_device *dev)
858 {
859 struct qeth_card *card = dev->ml_priv;
860
861 QETH_CARD_TEXT(card, 5, "qethope_");
862 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
863 QETH_CARD_TEXT(card, 3, "openREC");
864 return -ERESTARTSYS;
865 }
866 return __qeth_l2_open(dev);
867 }
868
869 static int qeth_l2_stop(struct net_device *dev)
870 {
871 struct qeth_card *card = dev->ml_priv;
872
873 QETH_CARD_TEXT(card, 4, "qethstop");
874 netif_tx_disable(dev);
875 if (card->state == CARD_STATE_UP) {
876 card->state = CARD_STATE_SOFTSETUP;
877 napi_disable(&card->napi);
878 }
879 return 0;
880 }
881
882 static const struct device_type qeth_l2_devtype = {
883 .name = "qeth_layer2",
884 .groups = qeth_l2_attr_groups,
885 };
886
887 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
888 {
889 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
890 int rc;
891
892 if (gdev->dev.type == &qeth_generic_devtype) {
893 rc = qeth_l2_create_device_attributes(&gdev->dev);
894 if (rc)
895 return rc;
896 }
897 INIT_LIST_HEAD(&card->vid_list);
898 hash_init(card->mac_htable);
899 card->options.layer2 = 1;
900 card->info.hwtrap = 0;
901 qeth_l2_vnicc_set_defaults(card);
902 return 0;
903 }
904
905 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
906 {
907 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
908
909 if (cgdev->dev.type == &qeth_generic_devtype)
910 qeth_l2_remove_device_attributes(&cgdev->dev);
911 qeth_set_allowed_threads(card, 0, 1);
912 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
913
914 if (cgdev->state == CCWGROUP_ONLINE)
915 qeth_l2_set_offline(cgdev);
916
917 if (card->dev) {
918 netif_napi_del(&card->napi);
919 unregister_netdev(card->dev);
920 card->dev = NULL;
921 }
922 return;
923 }
924
925 static const struct ethtool_ops qeth_l2_ethtool_ops = {
926 .get_link = ethtool_op_get_link,
927 .get_strings = qeth_core_get_strings,
928 .get_ethtool_stats = qeth_core_get_ethtool_stats,
929 .get_sset_count = qeth_core_get_sset_count,
930 .get_drvinfo = qeth_core_get_drvinfo,
931 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
932 };
933
934 static const struct ethtool_ops qeth_l2_osn_ops = {
935 .get_strings = qeth_core_get_strings,
936 .get_ethtool_stats = qeth_core_get_ethtool_stats,
937 .get_sset_count = qeth_core_get_sset_count,
938 .get_drvinfo = qeth_core_get_drvinfo,
939 };
940
941 static const struct net_device_ops qeth_l2_netdev_ops = {
942 .ndo_open = qeth_l2_open,
943 .ndo_stop = qeth_l2_stop,
944 .ndo_get_stats = qeth_get_stats,
945 .ndo_start_xmit = qeth_l2_hard_start_xmit,
946 .ndo_features_check = qeth_features_check,
947 .ndo_validate_addr = eth_validate_addr,
948 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
949 .ndo_do_ioctl = qeth_do_ioctl,
950 .ndo_set_mac_address = qeth_l2_set_mac_address,
951 .ndo_change_mtu = qeth_change_mtu,
952 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
953 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
954 .ndo_tx_timeout = qeth_tx_timeout,
955 .ndo_fix_features = qeth_fix_features,
956 .ndo_set_features = qeth_set_features
957 };
958
959 static int qeth_l2_setup_netdev(struct qeth_card *card)
960 {
961 switch (card->info.type) {
962 case QETH_CARD_TYPE_IQD:
963 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
964 ether_setup);
965 break;
966 case QETH_CARD_TYPE_OSN:
967 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
968 ether_setup);
969 break;
970 default:
971 card->dev = alloc_etherdev(0);
972 }
973
974 if (!card->dev)
975 return -ENODEV;
976
977 card->dev->ml_priv = card;
978 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
979 card->dev->mtu = card->info.initial_mtu;
980 card->dev->min_mtu = 64;
981 card->dev->max_mtu = ETH_MAX_MTU;
982 card->dev->netdev_ops = &qeth_l2_netdev_ops;
983 if (card->info.type == QETH_CARD_TYPE_OSN) {
984 card->dev->ethtool_ops = &qeth_l2_osn_ops;
985 card->dev->flags |= IFF_NOARP;
986 } else {
987 card->dev->ethtool_ops = &qeth_l2_ethtool_ops;
988 }
989
990 if (card->info.type == QETH_CARD_TYPE_OSM)
991 card->dev->features |= NETIF_F_VLAN_CHALLENGED;
992 else
993 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
994 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
995 card->dev->hw_features = NETIF_F_SG;
996 card->dev->vlan_features = NETIF_F_SG;
997 card->dev->features |= NETIF_F_SG;
998 /* OSA 3S and earlier has no RX/TX support */
999 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1000 card->dev->hw_features |= NETIF_F_IP_CSUM;
1001 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1002 }
1003 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1004 card->dev->hw_features |= NETIF_F_RXCSUM;
1005 card->dev->vlan_features |= NETIF_F_RXCSUM;
1006 }
1007 }
1008 if (card->info.type != QETH_CARD_TYPE_OSN &&
1009 card->info.type != QETH_CARD_TYPE_IQD) {
1010 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING;
1011 card->dev->needed_headroom = sizeof(struct qeth_hdr);
1012 }
1013
1014 card->info.broadcast_capable = 1;
1015 qeth_l2_request_initial_mac(card);
1016 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1017 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1018 netif_carrier_off(card->dev);
1019 return register_netdev(card->dev);
1020 }
1021
1022 static int qeth_l2_start_ipassists(struct qeth_card *card)
1023 {
1024 /* configure isolation level */
1025 if (qeth_set_access_ctrl_online(card, 0))
1026 return -ENODEV;
1027 return 0;
1028 }
1029
1030 static void qeth_l2_trace_features(struct qeth_card *card)
1031 {
1032 /* Set BridgePort features */
1033 QETH_CARD_TEXT(card, 2, "featuSBP");
1034 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
1035 sizeof(card->options.sbp.supported_funcs));
1036 /* VNIC Characteristics features */
1037 QETH_CARD_TEXT(card, 2, "feaVNICC");
1038 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
1039 sizeof(card->options.vnicc.sup_chars));
1040 }
1041
1042 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1043 {
1044 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1045 int rc = 0;
1046 enum qeth_card_states recover_flag;
1047
1048 mutex_lock(&card->discipline_mutex);
1049 mutex_lock(&card->conf_mutex);
1050 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1051 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1052
1053 recover_flag = card->state;
1054 rc = qeth_core_hardsetup_card(card);
1055 if (rc) {
1056 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1057 rc = -ENODEV;
1058 goto out_remove;
1059 }
1060 qeth_bridgeport_query_support(card);
1061 if (card->options.sbp.supported_funcs)
1062 dev_info(&card->gdev->dev,
1063 "The device represents a Bridge Capable Port\n");
1064
1065 if (!card->dev && qeth_l2_setup_netdev(card)) {
1066 rc = -ENODEV;
1067 goto out_remove;
1068 }
1069
1070 if (card->info.type != QETH_CARD_TYPE_OSN)
1071 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1072
1073 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1074 if (card->info.hwtrap &&
1075 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1076 card->info.hwtrap = 0;
1077 } else
1078 card->info.hwtrap = 0;
1079
1080 /* for the rx_bcast characteristic, init VNICC after setmac */
1081 qeth_l2_vnicc_init(card);
1082
1083 qeth_trace_features(card);
1084 qeth_l2_trace_features(card);
1085
1086 qeth_l2_setup_bridgeport_attrs(card);
1087
1088 card->state = CARD_STATE_HARDSETUP;
1089 memset(&card->rx, 0, sizeof(struct qeth_rx));
1090 qeth_print_status_message(card);
1091
1092 /* softsetup */
1093 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1094
1095 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1096 (card->info.type == QETH_CARD_TYPE_OSX)) {
1097 rc = qeth_l2_start_ipassists(card);
1098 if (rc)
1099 goto out_remove;
1100 }
1101
1102 if (card->info.type != QETH_CARD_TYPE_OSN)
1103 qeth_l2_process_vlans(card);
1104
1105 netif_tx_disable(card->dev);
1106
1107 rc = qeth_init_qdio_queues(card);
1108 if (rc) {
1109 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1110 rc = -ENODEV;
1111 goto out_remove;
1112 }
1113 card->state = CARD_STATE_SOFTSETUP;
1114 if (card->lan_online)
1115 netif_carrier_on(card->dev);
1116 else
1117 netif_carrier_off(card->dev);
1118
1119 qeth_set_allowed_threads(card, 0xffffffff, 0);
1120 if (recover_flag == CARD_STATE_RECOVER) {
1121 if (recovery_mode &&
1122 card->info.type != QETH_CARD_TYPE_OSN) {
1123 __qeth_l2_open(card->dev);
1124 } else {
1125 rtnl_lock();
1126 dev_open(card->dev);
1127 rtnl_unlock();
1128 }
1129 /* this also sets saved unicast addresses */
1130 qeth_l2_set_rx_mode(card->dev);
1131 rtnl_lock();
1132 qeth_recover_features(card->dev);
1133 rtnl_unlock();
1134 }
1135 /* let user_space know that device is online */
1136 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1137 mutex_unlock(&card->conf_mutex);
1138 mutex_unlock(&card->discipline_mutex);
1139 return 0;
1140
1141 out_remove:
1142 qeth_l2_stop_card(card, 0);
1143 ccw_device_set_offline(CARD_DDEV(card));
1144 ccw_device_set_offline(CARD_WDEV(card));
1145 ccw_device_set_offline(CARD_RDEV(card));
1146 qdio_free(CARD_DDEV(card));
1147 if (recover_flag == CARD_STATE_RECOVER)
1148 card->state = CARD_STATE_RECOVER;
1149 else
1150 card->state = CARD_STATE_DOWN;
1151 mutex_unlock(&card->conf_mutex);
1152 mutex_unlock(&card->discipline_mutex);
1153 return rc;
1154 }
1155
1156 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1157 {
1158 return __qeth_l2_set_online(gdev, 0);
1159 }
1160
1161 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1162 int recovery_mode)
1163 {
1164 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1165 int rc = 0, rc2 = 0, rc3 = 0;
1166 enum qeth_card_states recover_flag;
1167
1168 mutex_lock(&card->discipline_mutex);
1169 mutex_lock(&card->conf_mutex);
1170 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1171 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1172
1173 if (card->dev && netif_carrier_ok(card->dev))
1174 netif_carrier_off(card->dev);
1175 recover_flag = card->state;
1176 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1177 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1178 card->info.hwtrap = 1;
1179 }
1180 qeth_l2_stop_card(card, recovery_mode);
1181 rc = ccw_device_set_offline(CARD_DDEV(card));
1182 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1183 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1184 if (!rc)
1185 rc = (rc2) ? rc2 : rc3;
1186 if (rc)
1187 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1188 qdio_free(CARD_DDEV(card));
1189 if (recover_flag == CARD_STATE_UP)
1190 card->state = CARD_STATE_RECOVER;
1191 /* let user_space know that device is offline */
1192 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1193 mutex_unlock(&card->conf_mutex);
1194 mutex_unlock(&card->discipline_mutex);
1195 return 0;
1196 }
1197
1198 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1199 {
1200 return __qeth_l2_set_offline(cgdev, 0);
1201 }
1202
1203 static int qeth_l2_recover(void *ptr)
1204 {
1205 struct qeth_card *card;
1206 int rc = 0;
1207
1208 card = (struct qeth_card *) ptr;
1209 QETH_CARD_TEXT(card, 2, "recover1");
1210 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1211 return 0;
1212 QETH_CARD_TEXT(card, 2, "recover2");
1213 dev_warn(&card->gdev->dev,
1214 "A recovery process has been started for the device\n");
1215 qeth_set_recovery_task(card);
1216 __qeth_l2_set_offline(card->gdev, 1);
1217 rc = __qeth_l2_set_online(card->gdev, 1);
1218 if (!rc)
1219 dev_info(&card->gdev->dev,
1220 "Device successfully recovered!\n");
1221 else {
1222 qeth_close_dev(card);
1223 dev_warn(&card->gdev->dev, "The qeth device driver "
1224 "failed to recover an error on the device\n");
1225 }
1226 qeth_clear_recovery_task(card);
1227 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1228 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1229 return 0;
1230 }
1231
1232 static int __init qeth_l2_init(void)
1233 {
1234 pr_info("register layer 2 discipline\n");
1235 return 0;
1236 }
1237
1238 static void __exit qeth_l2_exit(void)
1239 {
1240 pr_info("unregister layer 2 discipline\n");
1241 }
1242
1243 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1244 {
1245 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1246
1247 if (card->dev)
1248 netif_device_detach(card->dev);
1249 qeth_set_allowed_threads(card, 0, 1);
1250 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1251 if (gdev->state == CCWGROUP_OFFLINE)
1252 return 0;
1253 if (card->state == CARD_STATE_UP) {
1254 if (card->info.hwtrap)
1255 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1256 __qeth_l2_set_offline(card->gdev, 1);
1257 } else
1258 __qeth_l2_set_offline(card->gdev, 0);
1259 return 0;
1260 }
1261
1262 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1263 {
1264 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1265 int rc = 0;
1266
1267 if (gdev->state == CCWGROUP_OFFLINE)
1268 goto out;
1269
1270 if (card->state == CARD_STATE_RECOVER) {
1271 rc = __qeth_l2_set_online(card->gdev, 1);
1272 if (rc) {
1273 rtnl_lock();
1274 dev_close(card->dev);
1275 rtnl_unlock();
1276 }
1277 } else
1278 rc = __qeth_l2_set_online(card->gdev, 0);
1279 out:
1280 qeth_set_allowed_threads(card, 0xffffffff, 0);
1281 if (card->dev)
1282 netif_device_attach(card->dev);
1283 if (rc)
1284 dev_warn(&card->gdev->dev, "The qeth device driver "
1285 "failed to recover an error on the device\n");
1286 return rc;
1287 }
1288
1289 /* Returns zero if the command is successfully "consumed" */
1290 static int qeth_l2_control_event(struct qeth_card *card,
1291 struct qeth_ipa_cmd *cmd)
1292 {
1293 switch (cmd->hdr.command) {
1294 case IPA_CMD_SETBRIDGEPORT_OSA:
1295 case IPA_CMD_SETBRIDGEPORT_IQD:
1296 if (cmd->data.sbp.hdr.command_code ==
1297 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1298 qeth_bridge_state_change(card, cmd);
1299 return 0;
1300 } else
1301 return 1;
1302 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1303 qeth_bridge_host_event(card, cmd);
1304 return 0;
1305 default:
1306 return 1;
1307 }
1308 }
1309
1310 struct qeth_discipline qeth_l2_discipline = {
1311 .devtype = &qeth_l2_devtype,
1312 .start_poll = qeth_qdio_start_poll,
1313 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1314 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1315 .process_rx_buffer = qeth_l2_process_inbound_buffer,
1316 .recover = qeth_l2_recover,
1317 .setup = qeth_l2_probe_device,
1318 .remove = qeth_l2_remove_device,
1319 .set_online = qeth_l2_set_online,
1320 .set_offline = qeth_l2_set_offline,
1321 .freeze = qeth_l2_pm_suspend,
1322 .thaw = qeth_l2_pm_resume,
1323 .restore = qeth_l2_pm_resume,
1324 .do_ioctl = NULL,
1325 .control_event_handler = qeth_l2_control_event,
1326 };
1327 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1328
1329 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1330 struct qeth_cmd_buffer *iob)
1331 {
1332 unsigned long flags;
1333 int rc = 0;
1334
1335 QETH_CARD_TEXT(card, 5, "osndctrd");
1336
1337 wait_event(card->wait_q,
1338 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1339 qeth_prepare_control_data(card, len, iob);
1340 QETH_CARD_TEXT(card, 6, "osnoirqp");
1341 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1342 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1343 (addr_t) iob, 0, 0);
1344 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1345 if (rc) {
1346 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1347 "ccw_device_start rc = %i\n", rc);
1348 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1349 qeth_release_buffer(iob->channel, iob);
1350 atomic_set(&card->write.irq_pending, 0);
1351 wake_up(&card->wait_q);
1352 }
1353 return rc;
1354 }
1355
1356 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1357 struct qeth_cmd_buffer *iob, int data_len)
1358 {
1359 u16 s1, s2;
1360
1361 QETH_CARD_TEXT(card, 4, "osndipa");
1362
1363 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1364 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1365 s2 = (u16)data_len;
1366 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1367 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1368 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1369 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1370 return qeth_osn_send_control_data(card, s1, iob);
1371 }
1372
1373 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1374 {
1375 struct qeth_cmd_buffer *iob;
1376 struct qeth_card *card;
1377 int rc;
1378
1379 if (!dev)
1380 return -ENODEV;
1381 card = dev->ml_priv;
1382 if (!card)
1383 return -ENODEV;
1384 QETH_CARD_TEXT(card, 2, "osnsdmc");
1385 if (!qeth_card_hw_is_reachable(card))
1386 return -ENODEV;
1387 iob = qeth_wait_for_buffer(&card->write);
1388 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1389 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1390 return rc;
1391 }
1392 EXPORT_SYMBOL(qeth_osn_assist);
1393
1394 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1395 int (*assist_cb)(struct net_device *, void *),
1396 int (*data_cb)(struct sk_buff *))
1397 {
1398 struct qeth_card *card;
1399
1400 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1401 if (*dev == NULL)
1402 return -ENODEV;
1403 card = (*dev)->ml_priv;
1404 if (!card)
1405 return -ENODEV;
1406 QETH_CARD_TEXT(card, 2, "osnreg");
1407 if ((assist_cb == NULL) || (data_cb == NULL))
1408 return -EINVAL;
1409 card->osn_info.assist_cb = assist_cb;
1410 card->osn_info.data_cb = data_cb;
1411 return 0;
1412 }
1413 EXPORT_SYMBOL(qeth_osn_register);
1414
1415 void qeth_osn_deregister(struct net_device *dev)
1416 {
1417 struct qeth_card *card;
1418
1419 if (!dev)
1420 return;
1421 card = dev->ml_priv;
1422 if (!card)
1423 return;
1424 QETH_CARD_TEXT(card, 2, "osndereg");
1425 card->osn_info.assist_cb = NULL;
1426 card->osn_info.data_cb = NULL;
1427 return;
1428 }
1429 EXPORT_SYMBOL(qeth_osn_deregister);
1430
1431 /* SETBRIDGEPORT support, async notifications */
1432
1433 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1434
1435 /**
1436 * qeth_bridge_emit_host_event() - bridgeport address change notification
1437 * @card: qeth_card structure pointer, for udev events.
1438 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1439 * and reset token and addr_lnid are unused and may be NULL.
1440 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1441 * object, 0 - addition of an object.
1442 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1443 * @token: "network token" structure identifying physical address of the port.
1444 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1445 *
1446 * This function is called when registrations and deregistrations are
1447 * reported by the hardware, and also when notifications are enabled -
1448 * for all currently registered addresses.
1449 */
1450 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1451 enum qeth_an_event_type evtype,
1452 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1453 {
1454 char str[7][32];
1455 char *env[8];
1456 int i = 0;
1457
1458 switch (evtype) {
1459 case anev_reg_unreg:
1460 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1461 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1462 ? "deregister" : "register");
1463 env[i] = str[i]; i++;
1464 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1465 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1466 addr_lnid->lnid);
1467 env[i] = str[i]; i++;
1468 }
1469 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1470 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1471 addr_lnid->mac);
1472 env[i] = str[i]; i++;
1473 }
1474 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1475 token->cssid, token->ssid, token->devnum);
1476 env[i] = str[i]; i++;
1477 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1478 env[i] = str[i]; i++;
1479 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1480 token->chpid);
1481 env[i] = str[i]; i++;
1482 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1483 env[i] = str[i]; i++;
1484 break;
1485 case anev_abort:
1486 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1487 env[i] = str[i]; i++;
1488 break;
1489 case anev_reset:
1490 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1491 env[i] = str[i]; i++;
1492 break;
1493 }
1494 env[i] = NULL;
1495 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1496 }
1497
1498 struct qeth_bridge_state_data {
1499 struct work_struct worker;
1500 struct qeth_card *card;
1501 struct qeth_sbp_state_change qports;
1502 };
1503
1504 static void qeth_bridge_state_change_worker(struct work_struct *work)
1505 {
1506 struct qeth_bridge_state_data *data =
1507 container_of(work, struct qeth_bridge_state_data, worker);
1508 /* We are only interested in the first entry - local port */
1509 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1510 char env_locrem[32];
1511 char env_role[32];
1512 char env_state[32];
1513 char *env[] = {
1514 env_locrem,
1515 env_role,
1516 env_state,
1517 NULL
1518 };
1519
1520 /* Role should not change by itself, but if it did, */
1521 /* information from the hardware is authoritative. */
1522 mutex_lock(&data->card->conf_mutex);
1523 data->card->options.sbp.role = entry->role;
1524 mutex_unlock(&data->card->conf_mutex);
1525
1526 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1527 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1528 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1529 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1530 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1531 "<INVALID>");
1532 snprintf(env_state, sizeof(env_state), "STATE=%s",
1533 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1534 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1535 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1536 "<INVALID>");
1537 kobject_uevent_env(&data->card->gdev->dev.kobj,
1538 KOBJ_CHANGE, env);
1539 kfree(data);
1540 }
1541
1542 static void qeth_bridge_state_change(struct qeth_card *card,
1543 struct qeth_ipa_cmd *cmd)
1544 {
1545 struct qeth_sbp_state_change *qports =
1546 &cmd->data.sbp.data.state_change;
1547 struct qeth_bridge_state_data *data;
1548 int extrasize;
1549
1550 QETH_CARD_TEXT(card, 2, "brstchng");
1551 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1552 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1553 return;
1554 }
1555 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1556 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1557 GFP_ATOMIC);
1558 if (!data) {
1559 QETH_CARD_TEXT(card, 2, "BPSalloc");
1560 return;
1561 }
1562 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1563 data->card = card;
1564 memcpy(&data->qports, qports,
1565 sizeof(struct qeth_sbp_state_change) + extrasize);
1566 queue_work(qeth_wq, &data->worker);
1567 }
1568
1569 struct qeth_bridge_host_data {
1570 struct work_struct worker;
1571 struct qeth_card *card;
1572 struct qeth_ipacmd_addr_change hostevs;
1573 };
1574
1575 static void qeth_bridge_host_event_worker(struct work_struct *work)
1576 {
1577 struct qeth_bridge_host_data *data =
1578 container_of(work, struct qeth_bridge_host_data, worker);
1579 int i;
1580
1581 if (data->hostevs.lost_event_mask) {
1582 dev_info(&data->card->gdev->dev,
1583 "Address notification from the Bridge Port stopped %s (%s)\n",
1584 data->card->dev->name,
1585 (data->hostevs.lost_event_mask == 0x01)
1586 ? "Overflow"
1587 : (data->hostevs.lost_event_mask == 0x02)
1588 ? "Bridge port state change"
1589 : "Unknown reason");
1590 mutex_lock(&data->card->conf_mutex);
1591 data->card->options.sbp.hostnotification = 0;
1592 mutex_unlock(&data->card->conf_mutex);
1593 qeth_bridge_emit_host_event(data->card, anev_abort,
1594 0, NULL, NULL);
1595 } else
1596 for (i = 0; i < data->hostevs.num_entries; i++) {
1597 struct qeth_ipacmd_addr_change_entry *entry =
1598 &data->hostevs.entry[i];
1599 qeth_bridge_emit_host_event(data->card,
1600 anev_reg_unreg,
1601 entry->change_code,
1602 &entry->token, &entry->addr_lnid);
1603 }
1604 kfree(data);
1605 }
1606
1607 static void qeth_bridge_host_event(struct qeth_card *card,
1608 struct qeth_ipa_cmd *cmd)
1609 {
1610 struct qeth_ipacmd_addr_change *hostevs =
1611 &cmd->data.addrchange;
1612 struct qeth_bridge_host_data *data;
1613 int extrasize;
1614
1615 QETH_CARD_TEXT(card, 2, "brhostev");
1616 if (cmd->hdr.return_code != 0x0000) {
1617 if (cmd->hdr.return_code == 0x0010) {
1618 if (hostevs->lost_event_mask == 0x00)
1619 hostevs->lost_event_mask = 0xff;
1620 } else {
1621 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1622 cmd->hdr.return_code);
1623 return;
1624 }
1625 }
1626 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1627 hostevs->num_entries;
1628 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1629 GFP_ATOMIC);
1630 if (!data) {
1631 QETH_CARD_TEXT(card, 2, "BPHalloc");
1632 return;
1633 }
1634 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1635 data->card = card;
1636 memcpy(&data->hostevs, hostevs,
1637 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1638 queue_work(qeth_wq, &data->worker);
1639 }
1640
1641 /* SETBRIDGEPORT support; sending commands */
1642
1643 struct _qeth_sbp_cbctl {
1644 u16 ipa_rc;
1645 u16 cmd_rc;
1646 union {
1647 u32 supported;
1648 struct {
1649 enum qeth_sbp_roles *role;
1650 enum qeth_sbp_states *state;
1651 } qports;
1652 } data;
1653 };
1654
1655 /**
1656 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1657 * @card: qeth_card structure pointer, for debug messages.
1658 * @cbctl: state structure with hardware return codes.
1659 * @setcmd: IPA command code
1660 *
1661 * Returns negative errno-compatible error indication or 0 on success.
1662 */
1663 static int qeth_bridgeport_makerc(struct qeth_card *card,
1664 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1665 {
1666 int rc;
1667 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1668
1669 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1670 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1671 switch (cbctl->cmd_rc) {
1672 case IPA_RC_SUCCESS:
1673 rc = 0;
1674 break;
1675 case IPA_RC_L2_UNSUPPORTED_CMD:
1676 case IPA_RC_UNSUPPORTED_COMMAND:
1677 rc = -EOPNOTSUPP;
1678 break;
1679 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1680 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1681 rc = -ENODEV; /* maybe not the best code here? */
1682 dev_err(&card->gdev->dev,
1683 "The device is not configured as a Bridge Port\n");
1684 break;
1685 case IPA_RC_SBP_OSA_OS_MISMATCH:
1686 case IPA_RC_SBP_IQD_OS_MISMATCH:
1687 rc = -EPERM;
1688 dev_err(&card->gdev->dev,
1689 "A Bridge Port is already configured by a different operating system\n");
1690 break;
1691 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1692 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1693 switch (setcmd) {
1694 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1695 rc = -EEXIST;
1696 dev_err(&card->gdev->dev,
1697 "The LAN already has a primary Bridge Port\n");
1698 break;
1699 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1700 rc = -EBUSY;
1701 dev_err(&card->gdev->dev,
1702 "The device is already a primary Bridge Port\n");
1703 break;
1704 default:
1705 rc = -EIO;
1706 }
1707 break;
1708 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1709 case IPA_RC_SBP_IQD_CURRENT_SECOND:
1710 rc = -EBUSY;
1711 dev_err(&card->gdev->dev,
1712 "The device is already a secondary Bridge Port\n");
1713 break;
1714 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1715 case IPA_RC_SBP_IQD_LIMIT_SECOND:
1716 rc = -EEXIST;
1717 dev_err(&card->gdev->dev,
1718 "The LAN cannot have more secondary Bridge Ports\n");
1719 break;
1720 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1721 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1722 rc = -EBUSY;
1723 dev_err(&card->gdev->dev,
1724 "The device is already a primary Bridge Port\n");
1725 break;
1726 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1727 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1728 rc = -EACCES;
1729 dev_err(&card->gdev->dev,
1730 "The device is not authorized to be a Bridge Port\n");
1731 break;
1732 default:
1733 rc = -EIO;
1734 }
1735 else
1736 switch (cbctl->ipa_rc) {
1737 case IPA_RC_NOTSUPP:
1738 rc = -EOPNOTSUPP;
1739 break;
1740 case IPA_RC_UNSUPPORTED_COMMAND:
1741 rc = -EOPNOTSUPP;
1742 break;
1743 default:
1744 rc = -EIO;
1745 }
1746
1747 if (rc) {
1748 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1749 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1750 }
1751 return rc;
1752 }
1753
1754 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1755 enum qeth_ipa_sbp_cmd sbp_cmd,
1756 unsigned int cmd_length)
1757 {
1758 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ?
1759 IPA_CMD_SETBRIDGEPORT_IQD :
1760 IPA_CMD_SETBRIDGEPORT_OSA;
1761 struct qeth_cmd_buffer *iob;
1762 struct qeth_ipa_cmd *cmd;
1763
1764 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0);
1765 if (!iob)
1766 return iob;
1767 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1768 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1769 cmd_length;
1770 cmd->data.sbp.hdr.command_code = sbp_cmd;
1771 cmd->data.sbp.hdr.used_total = 1;
1772 cmd->data.sbp.hdr.seq_no = 1;
1773 return iob;
1774 }
1775
1776 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1777 struct qeth_reply *reply, unsigned long data)
1778 {
1779 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1780 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1781 QETH_CARD_TEXT(card, 2, "brqsupcb");
1782 cbctl->ipa_rc = cmd->hdr.return_code;
1783 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1784 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1785 cbctl->data.supported =
1786 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1787 } else {
1788 cbctl->data.supported = 0;
1789 }
1790 return 0;
1791 }
1792
1793 /**
1794 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1795 * @card: qeth_card structure pointer.
1796 *
1797 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1798 * strucutre: card->options.sbp.supported_funcs.
1799 */
1800 static void qeth_bridgeport_query_support(struct qeth_card *card)
1801 {
1802 struct qeth_cmd_buffer *iob;
1803 struct _qeth_sbp_cbctl cbctl;
1804
1805 QETH_CARD_TEXT(card, 2, "brqsuppo");
1806 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1807 sizeof(struct qeth_sbp_query_cmds_supp));
1808 if (!iob)
1809 return;
1810 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1811 (void *)&cbctl) ||
1812 qeth_bridgeport_makerc(card, &cbctl,
1813 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1814 /* non-zero makerc signifies failure, and produce messages */
1815 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1816 return;
1817 }
1818 card->options.sbp.supported_funcs = cbctl.data.supported;
1819 }
1820
1821 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1822 struct qeth_reply *reply, unsigned long data)
1823 {
1824 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1825 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1826 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1827
1828 QETH_CARD_TEXT(card, 2, "brqprtcb");
1829 cbctl->ipa_rc = cmd->hdr.return_code;
1830 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1831 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1832 return 0;
1833 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1834 cbctl->cmd_rc = 0xffff;
1835 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1836 return 0;
1837 }
1838 /* first entry contains the state of the local port */
1839 if (qports->num_entries > 0) {
1840 if (cbctl->data.qports.role)
1841 *cbctl->data.qports.role = qports->entry[0].role;
1842 if (cbctl->data.qports.state)
1843 *cbctl->data.qports.state = qports->entry[0].state;
1844 }
1845 return 0;
1846 }
1847
1848 /**
1849 * qeth_bridgeport_query_ports() - query local bridgeport status.
1850 * @card: qeth_card structure pointer.
1851 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1852 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1853 *
1854 * Returns negative errno-compatible error indication or 0 on success.
1855 *
1856 * 'role' and 'state' are not updated in case of hardware operation failure.
1857 */
1858 int qeth_bridgeport_query_ports(struct qeth_card *card,
1859 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1860 {
1861 int rc = 0;
1862 struct qeth_cmd_buffer *iob;
1863 struct _qeth_sbp_cbctl cbctl = {
1864 .data = {
1865 .qports = {
1866 .role = role,
1867 .state = state,
1868 },
1869 },
1870 };
1871
1872 QETH_CARD_TEXT(card, 2, "brqports");
1873 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1874 return -EOPNOTSUPP;
1875 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1876 if (!iob)
1877 return -ENOMEM;
1878 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1879 (void *)&cbctl);
1880 if (rc < 0)
1881 return rc;
1882 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1883 }
1884 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1885
1886 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1887 struct qeth_reply *reply, unsigned long data)
1888 {
1889 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1890 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1891 QETH_CARD_TEXT(card, 2, "brsetrcb");
1892 cbctl->ipa_rc = cmd->hdr.return_code;
1893 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1894 return 0;
1895 }
1896
1897 /**
1898 * qeth_bridgeport_setrole() - Assign primary role to the port.
1899 * @card: qeth_card structure pointer.
1900 * @role: Role to assign.
1901 *
1902 * Returns negative errno-compatible error indication or 0 on success.
1903 */
1904 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1905 {
1906 int rc = 0;
1907 int cmdlength;
1908 struct qeth_cmd_buffer *iob;
1909 struct _qeth_sbp_cbctl cbctl;
1910 enum qeth_ipa_sbp_cmd setcmd;
1911
1912 QETH_CARD_TEXT(card, 2, "brsetrol");
1913 switch (role) {
1914 case QETH_SBP_ROLE_NONE:
1915 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1916 cmdlength = sizeof(struct qeth_sbp_reset_role);
1917 break;
1918 case QETH_SBP_ROLE_PRIMARY:
1919 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1920 cmdlength = sizeof(struct qeth_sbp_set_primary);
1921 break;
1922 case QETH_SBP_ROLE_SECONDARY:
1923 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1924 cmdlength = sizeof(struct qeth_sbp_set_secondary);
1925 break;
1926 default:
1927 return -EINVAL;
1928 }
1929 if (!(card->options.sbp.supported_funcs & setcmd))
1930 return -EOPNOTSUPP;
1931 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1932 if (!iob)
1933 return -ENOMEM;
1934 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1935 (void *)&cbctl);
1936 if (rc < 0)
1937 return rc;
1938 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
1939 }
1940
1941 /**
1942 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1943 * @card: qeth_card structure pointer, for debug messages.
1944 *
1945 * Returns negative errno-compatible error indication or 0 on success.
1946 */
1947 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1948 {
1949 int rc;
1950
1951 if (pnso_rc == 0)
1952 switch (response) {
1953 case 0x0001:
1954 rc = 0;
1955 break;
1956 case 0x0004:
1957 case 0x0100:
1958 case 0x0106:
1959 rc = -EOPNOTSUPP;
1960 dev_err(&card->gdev->dev,
1961 "Setting address notification failed\n");
1962 break;
1963 case 0x0107:
1964 rc = -EAGAIN;
1965 break;
1966 default:
1967 rc = -EIO;
1968 }
1969 else
1970 rc = -EIO;
1971
1972 if (rc) {
1973 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1974 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1975 }
1976 return rc;
1977 }
1978
1979 static void qeth_bridgeport_an_set_cb(void *priv,
1980 enum qdio_brinfo_entry_type type, void *entry)
1981 {
1982 struct qeth_card *card = (struct qeth_card *)priv;
1983 struct qdio_brinfo_entry_l2 *l2entry;
1984 u8 code;
1985
1986 if (type != l2_addr_lnid) {
1987 WARN_ON_ONCE(1);
1988 return;
1989 }
1990
1991 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1992 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1993 if (l2entry->addr_lnid.lnid)
1994 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1995 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1996 (struct net_if_token *)&l2entry->nit,
1997 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1998 }
1999
2000 /**
2001 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2002 * @card: qeth_card structure pointer.
2003 * @enable: 0 - disable, non-zero - enable notifications
2004 *
2005 * Returns negative errno-compatible error indication or 0 on success.
2006 *
2007 * On enable, emits a series of address notifications udev events for all
2008 * currently registered hosts.
2009 */
2010 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2011 {
2012 int rc;
2013 u16 response;
2014 struct ccw_device *ddev;
2015 struct subchannel_id schid;
2016
2017 if (!card)
2018 return -EINVAL;
2019 if (!card->options.sbp.supported_funcs)
2020 return -EOPNOTSUPP;
2021 ddev = CARD_DDEV(card);
2022 ccw_device_get_schid(ddev, &schid);
2023
2024 if (enable) {
2025 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2026 rc = qdio_pnso_brinfo(schid, 1, &response,
2027 qeth_bridgeport_an_set_cb, card);
2028 } else
2029 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2030 return qeth_anset_makerc(card, rc, response);
2031 }
2032 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2033
2034 static bool qeth_bridgeport_is_in_use(struct qeth_card *card)
2035 {
2036 return (card->options.sbp.role || card->options.sbp.reflect_promisc ||
2037 card->options.sbp.hostnotification);
2038 }
2039
2040 /* VNIC Characteristics support */
2041
2042 /* handle VNICC IPA command return codes; convert to error codes */
2043 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc)
2044 {
2045 int rc;
2046
2047 switch (ipa_rc) {
2048 case IPA_RC_SUCCESS:
2049 return ipa_rc;
2050 case IPA_RC_L2_UNSUPPORTED_CMD:
2051 case IPA_RC_NOTSUPP:
2052 rc = -EOPNOTSUPP;
2053 break;
2054 case IPA_RC_VNICC_OOSEQ:
2055 rc = -EALREADY;
2056 break;
2057 case IPA_RC_VNICC_VNICBP:
2058 rc = -EBUSY;
2059 break;
2060 case IPA_RC_L2_ADDR_TABLE_FULL:
2061 rc = -ENOSPC;
2062 break;
2063 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
2064 rc = -EACCES;
2065 break;
2066 default:
2067 rc = -EIO;
2068 }
2069
2070 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
2071 return rc;
2072 }
2073
2074 /* generic VNICC request call back control */
2075 struct _qeth_l2_vnicc_request_cbctl {
2076 u32 sub_cmd;
2077 struct {
2078 u32 vnic_char;
2079 u32 timeout;
2080 } param;
2081 struct {
2082 union{
2083 u32 *sup_cmds;
2084 u32 *timeout;
2085 };
2086 } result;
2087 };
2088
2089 /* generic VNICC request call back */
2090 static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
2091 struct qeth_reply *reply,
2092 unsigned long data)
2093 {
2094 struct _qeth_l2_vnicc_request_cbctl *cbctl =
2095 (struct _qeth_l2_vnicc_request_cbctl *) reply->param;
2096 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2097 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
2098
2099 QETH_CARD_TEXT(card, 2, "vniccrcb");
2100 if (cmd->hdr.return_code)
2101 return 0;
2102 /* return results to caller */
2103 card->options.vnicc.sup_chars = rep->hdr.sup;
2104 card->options.vnicc.cur_chars = rep->hdr.cur;
2105
2106 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS)
2107 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds;
2108
2109 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT)
2110 *cbctl->result.timeout = rep->getset_timeout.timeout;
2111
2112 return 0;
2113 }
2114
2115 /* generic VNICC request */
2116 static int qeth_l2_vnicc_request(struct qeth_card *card,
2117 struct _qeth_l2_vnicc_request_cbctl *cbctl)
2118 {
2119 struct qeth_ipacmd_vnicc *req;
2120 struct qeth_cmd_buffer *iob;
2121 struct qeth_ipa_cmd *cmd;
2122 int rc;
2123
2124 QETH_CARD_TEXT(card, 2, "vniccreq");
2125
2126 /* get new buffer for request */
2127 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0);
2128 if (!iob)
2129 return -ENOMEM;
2130
2131 /* create header for request */
2132 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
2133 req = &cmd->data.vnicc;
2134
2135 /* create sub command header for request */
2136 req->sub_hdr.data_length = sizeof(req->sub_hdr);
2137 req->sub_hdr.sub_command = cbctl->sub_cmd;
2138
2139 /* create sub command specific request fields */
2140 switch (cbctl->sub_cmd) {
2141 case IPA_VNICC_QUERY_CHARS:
2142 break;
2143 case IPA_VNICC_QUERY_CMDS:
2144 req->sub_hdr.data_length += sizeof(req->query_cmds);
2145 req->query_cmds.vnic_char = cbctl->param.vnic_char;
2146 break;
2147 case IPA_VNICC_ENABLE:
2148 case IPA_VNICC_DISABLE:
2149 req->sub_hdr.data_length += sizeof(req->set_char);
2150 req->set_char.vnic_char = cbctl->param.vnic_char;
2151 break;
2152 case IPA_VNICC_SET_TIMEOUT:
2153 req->getset_timeout.timeout = cbctl->param.timeout;
2154 /* fallthrough */
2155 case IPA_VNICC_GET_TIMEOUT:
2156 req->sub_hdr.data_length += sizeof(req->getset_timeout);
2157 req->getset_timeout.vnic_char = cbctl->param.vnic_char;
2158 break;
2159 default:
2160 qeth_release_buffer(iob->channel, iob);
2161 return -EOPNOTSUPP;
2162 }
2163
2164 /* send request */
2165 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb,
2166 (void *) cbctl);
2167
2168 return qeth_l2_vnicc_makerc(card, rc);
2169 }
2170
2171 /* VNICC query VNIC characteristics request */
2172 static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
2173 {
2174 struct _qeth_l2_vnicc_request_cbctl cbctl;
2175
2176 /* prepare callback control */
2177 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS;
2178
2179 QETH_CARD_TEXT(card, 2, "vniccqch");
2180 return qeth_l2_vnicc_request(card, &cbctl);
2181 }
2182
2183 /* VNICC query sub commands request */
2184 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
2185 u32 *sup_cmds)
2186 {
2187 struct _qeth_l2_vnicc_request_cbctl cbctl;
2188
2189 /* prepare callback control */
2190 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS;
2191 cbctl.param.vnic_char = vnic_char;
2192 cbctl.result.sup_cmds = sup_cmds;
2193
2194 QETH_CARD_TEXT(card, 2, "vniccqcm");
2195 return qeth_l2_vnicc_request(card, &cbctl);
2196 }
2197
2198 /* VNICC enable/disable characteristic request */
2199 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
2200 u32 cmd)
2201 {
2202 struct _qeth_l2_vnicc_request_cbctl cbctl;
2203
2204 /* prepare callback control */
2205 cbctl.sub_cmd = cmd;
2206 cbctl.param.vnic_char = vnic_char;
2207
2208 QETH_CARD_TEXT(card, 2, "vniccedc");
2209 return qeth_l2_vnicc_request(card, &cbctl);
2210 }
2211
2212 /* VNICC get/set timeout for characteristic request */
2213 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
2214 u32 cmd, u32 *timeout)
2215 {
2216 struct _qeth_l2_vnicc_request_cbctl cbctl;
2217
2218 /* prepare callback control */
2219 cbctl.sub_cmd = cmd;
2220 cbctl.param.vnic_char = vnicc;
2221 if (cmd == IPA_VNICC_SET_TIMEOUT)
2222 cbctl.param.timeout = *timeout;
2223 if (cmd == IPA_VNICC_GET_TIMEOUT)
2224 cbctl.result.timeout = timeout;
2225
2226 QETH_CARD_TEXT(card, 2, "vniccgst");
2227 return qeth_l2_vnicc_request(card, &cbctl);
2228 }
2229
2230 /* set current VNICC flag state; called from sysfs store function */
2231 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
2232 {
2233 int rc = 0;
2234 u32 cmd;
2235
2236 QETH_CARD_TEXT(card, 2, "vniccsch");
2237
2238 /* do not change anything if BridgePort is enabled */
2239 if (qeth_bridgeport_is_in_use(card))
2240 return -EBUSY;
2241
2242 /* check if characteristic and enable/disable are supported */
2243 if (!(card->options.vnicc.sup_chars & vnicc) ||
2244 !(card->options.vnicc.set_char_sup & vnicc))
2245 return -EOPNOTSUPP;
2246
2247 /* set enable/disable command and store wanted characteristic */
2248 if (state) {
2249 cmd = IPA_VNICC_ENABLE;
2250 card->options.vnicc.wanted_chars |= vnicc;
2251 } else {
2252 cmd = IPA_VNICC_DISABLE;
2253 card->options.vnicc.wanted_chars &= ~vnicc;
2254 }
2255
2256 /* do we need to do anything? */
2257 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
2258 return rc;
2259
2260 /* if card is not ready, simply stop here */
2261 if (!qeth_card_hw_is_reachable(card)) {
2262 if (state)
2263 card->options.vnicc.cur_chars |= vnicc;
2264 else
2265 card->options.vnicc.cur_chars &= ~vnicc;
2266 return rc;
2267 }
2268
2269 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
2270 if (rc)
2271 card->options.vnicc.wanted_chars =
2272 card->options.vnicc.cur_chars;
2273 else {
2274 /* successful online VNICC change; handle special cases */
2275 if (state && vnicc == QETH_VNICC_RX_BCAST)
2276 card->options.vnicc.rx_bcast_enabled = true;
2277 if (!state && vnicc == QETH_VNICC_LEARNING)
2278 qeth_l2_vnicc_recover_timeout(card, vnicc,
2279 &card->options.vnicc.learning_timeout);
2280 }
2281
2282 return rc;
2283 }
2284
2285 /* get current VNICC flag state; called from sysfs show function */
2286 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
2287 {
2288 int rc = 0;
2289
2290 QETH_CARD_TEXT(card, 2, "vniccgch");
2291
2292 /* do not get anything if BridgePort is enabled */
2293 if (qeth_bridgeport_is_in_use(card))
2294 return -EBUSY;
2295
2296 /* check if characteristic is supported */
2297 if (!(card->options.vnicc.sup_chars & vnicc))
2298 return -EOPNOTSUPP;
2299
2300 /* if card is ready, query current VNICC state */
2301 if (qeth_card_hw_is_reachable(card))
2302 rc = qeth_l2_vnicc_query_chars(card);
2303
2304 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
2305 return rc;
2306 }
2307
2308 /* set VNICC timeout; called from sysfs store function. Currently, only learning
2309 * supports timeout
2310 */
2311 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
2312 {
2313 int rc = 0;
2314
2315 QETH_CARD_TEXT(card, 2, "vniccsto");
2316
2317 /* do not change anything if BridgePort is enabled */
2318 if (qeth_bridgeport_is_in_use(card))
2319 return -EBUSY;
2320
2321 /* check if characteristic and set_timeout are supported */
2322 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2323 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2324 return -EOPNOTSUPP;
2325
2326 /* do we need to do anything? */
2327 if (card->options.vnicc.learning_timeout == timeout)
2328 return rc;
2329
2330 /* if card is not ready, simply store the value internally and return */
2331 if (!qeth_card_hw_is_reachable(card)) {
2332 card->options.vnicc.learning_timeout = timeout;
2333 return rc;
2334 }
2335
2336 /* send timeout value to card; if successful, store value internally */
2337 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2338 IPA_VNICC_SET_TIMEOUT, &timeout);
2339 if (!rc)
2340 card->options.vnicc.learning_timeout = timeout;
2341
2342 return rc;
2343 }
2344
2345 /* get current VNICC timeout; called from sysfs show function. Currently, only
2346 * learning supports timeout
2347 */
2348 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
2349 {
2350 int rc = 0;
2351
2352 QETH_CARD_TEXT(card, 2, "vniccgto");
2353
2354 /* do not get anything if BridgePort is enabled */
2355 if (qeth_bridgeport_is_in_use(card))
2356 return -EBUSY;
2357
2358 /* check if characteristic and get_timeout are supported */
2359 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2360 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2361 return -EOPNOTSUPP;
2362 /* if card is ready, get timeout. Otherwise, just return stored value */
2363 *timeout = card->options.vnicc.learning_timeout;
2364 if (qeth_card_hw_is_reachable(card))
2365 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2366 IPA_VNICC_GET_TIMEOUT,
2367 timeout);
2368
2369 return rc;
2370 }
2371
2372 /* check if VNICC is currently enabled */
2373 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card)
2374 {
2375 /* if everything is turned off, VNICC is not active */
2376 if (!card->options.vnicc.cur_chars)
2377 return false;
2378 /* default values are only OK if rx_bcast was not enabled by user
2379 * or the card is offline.
2380 */
2381 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
2382 if (!card->options.vnicc.rx_bcast_enabled ||
2383 !qeth_card_hw_is_reachable(card))
2384 return false;
2385 }
2386 return true;
2387 }
2388
2389 /* recover user timeout setting */
2390 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
2391 u32 *timeout)
2392 {
2393 if (card->options.vnicc.sup_chars & vnicc &&
2394 card->options.vnicc.getset_timeout_sup & vnicc &&
2395 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
2396 timeout))
2397 return false;
2398 *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2399 return true;
2400 }
2401
2402 /* recover user characteristic setting */
2403 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2404 bool enable)
2405 {
2406 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2407
2408 if (card->options.vnicc.sup_chars & vnicc &&
2409 card->options.vnicc.set_char_sup & vnicc &&
2410 !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2411 return false;
2412 card->options.vnicc.wanted_chars &= ~vnicc;
2413 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2414 return true;
2415 }
2416
2417 /* (re-)initialize VNICC */
2418 static void qeth_l2_vnicc_init(struct qeth_card *card)
2419 {
2420 u32 *timeout = &card->options.vnicc.learning_timeout;
2421 unsigned int chars_len, i;
2422 unsigned long chars_tmp;
2423 u32 sup_cmds, vnicc;
2424 bool enable, error;
2425
2426 QETH_CARD_TEXT(card, 2, "vniccini");
2427 /* reset rx_bcast */
2428 card->options.vnicc.rx_bcast_enabled = 0;
2429 /* initial query and storage of VNIC characteristics */
2430 if (qeth_l2_vnicc_query_chars(card)) {
2431 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2432 *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
2433 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2434 /* fail quietly if user didn't change the default config */
2435 card->options.vnicc.sup_chars = 0;
2436 card->options.vnicc.cur_chars = 0;
2437 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2438 return;
2439 }
2440 /* get supported commands for each supported characteristic */
2441 chars_tmp = card->options.vnicc.sup_chars;
2442 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2443 for_each_set_bit(i, &chars_tmp, chars_len) {
2444 vnicc = BIT(i);
2445 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds);
2446 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) ||
2447 !(sup_cmds & IPA_VNICC_GET_TIMEOUT))
2448 card->options.vnicc.getset_timeout_sup &= ~vnicc;
2449 if (!(sup_cmds & IPA_VNICC_ENABLE) ||
2450 !(sup_cmds & IPA_VNICC_DISABLE))
2451 card->options.vnicc.set_char_sup &= ~vnicc;
2452 }
2453 /* enforce assumed default values and recover settings, if changed */
2454 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2455 timeout);
2456 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT;
2457 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE;
2458 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2459 for_each_set_bit(i, &chars_tmp, chars_len) {
2460 vnicc = BIT(i);
2461 enable = card->options.vnicc.wanted_chars & vnicc;
2462 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2463 }
2464 if (error)
2465 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2466 }
2467
2468 /* configure default values of VNIC characteristics */
2469 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2470 {
2471 /* characteristics values */
2472 card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2473 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
2474 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2475 /* supported commands */
2476 card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
2477 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
2478 /* settings wanted by users */
2479 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2480 }
2481
2482 module_init(qeth_l2_init);
2483 module_exit(qeth_l2_exit);
2484 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2485 MODULE_DESCRIPTION("qeth layer 2 discipline");
2486 MODULE_LICENSE("GPL");
CRIS linux kernel tree