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1/*
2 * drivers/s390/net/qeth_l2_main.c
3 *
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11#define KMSG_COMPONENT "qeth"
12#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/string.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
19#include <linux/slab.h>
20#include <linux/etherdevice.h>
21#include <linux/mii.h>
22#include <linux/ip.h>
23#include <linux/list.h>
24
25#include "qeth_core.h"
26
27static int qeth_l2_set_offline(struct ccwgroup_device *);
28static int qeth_l2_stop(struct net_device *);
29static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
30static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
31 enum qeth_ipa_cmds,
32 int (*reply_cb) (struct qeth_card *,
33 struct qeth_reply*,
34 unsigned long));
35static void qeth_l2_set_multicast_list(struct net_device *);
36static int qeth_l2_recover(void *);
37
38static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
39{
40 struct qeth_card *card = dev->ml_priv;
41 struct mii_ioctl_data *mii_data;
42 int rc = 0;
43
44 if (!card)
45 return -ENODEV;
46
47 if ((card->state != CARD_STATE_UP) &&
48 (card->state != CARD_STATE_SOFTSETUP))
49 return -ENODEV;
50
51 if (card->info.type == QETH_CARD_TYPE_OSN)
52 return -EPERM;
53
54 switch (cmd) {
55 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
56 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
57 break;
58 case SIOC_QETH_GET_CARD_TYPE:
59 if ((card->info.type == QETH_CARD_TYPE_OSD ||
60 card->info.type == QETH_CARD_TYPE_OSM ||
61 card->info.type == QETH_CARD_TYPE_OSX) &&
62 !card->info.guestlan)
63 return 1;
64 return 0;
65 break;
66 case SIOCGMIIPHY:
67 mii_data = if_mii(rq);
68 mii_data->phy_id = 0;
69 break;
70 case SIOCGMIIREG:
71 mii_data = if_mii(rq);
72 if (mii_data->phy_id != 0)
73 rc = -EINVAL;
74 else
75 mii_data->val_out = qeth_mdio_read(dev,
76 mii_data->phy_id, mii_data->reg_num);
77 break;
78 default:
79 rc = -EOPNOTSUPP;
80 }
81 if (rc)
82 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
83 return rc;
84}
85
86static int qeth_l2_verify_dev(struct net_device *dev)
87{
88 struct qeth_card *card;
89 unsigned long flags;
90 int rc = 0;
91
92 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
93 list_for_each_entry(card, &qeth_core_card_list.list, list) {
94 if (card->dev == dev) {
95 rc = QETH_REAL_CARD;
96 break;
97 }
98 }
99 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
100
101 return rc;
102}
103
104static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
105{
106 struct qeth_card *card;
107 struct net_device *ndev;
108 __u16 temp_dev_no;
109 unsigned long flags;
110 struct ccw_dev_id read_devid;
111
112 ndev = NULL;
113 memcpy(&temp_dev_no, read_dev_no, 2);
114 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
115 list_for_each_entry(card, &qeth_core_card_list.list, list) {
116 ccw_device_get_id(CARD_RDEV(card), &read_devid);
117 if (read_devid.devno == temp_dev_no) {
118 ndev = card->dev;
119 break;
120 }
121 }
122 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
123 return ndev;
124}
125
126static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
127 struct qeth_reply *reply,
128 unsigned long data)
129{
130 struct qeth_ipa_cmd *cmd;
131 __u8 *mac;
132
133 QETH_CARD_TEXT(card, 2, "L2Sgmacb");
134 cmd = (struct qeth_ipa_cmd *) data;
135 mac = &cmd->data.setdelmac.mac[0];
136 /* MAC already registered, needed in couple/uncouple case */
137 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
138 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
139 mac, QETH_CARD_IFNAME(card));
140 cmd->hdr.return_code = 0;
141 }
142 if (cmd->hdr.return_code)
143 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
144 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
145 return 0;
146}
147
148static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
149{
150 QETH_CARD_TEXT(card, 2, "L2Sgmac");
151 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
152 qeth_l2_send_setgroupmac_cb);
153}
154
155static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
156 struct qeth_reply *reply,
157 unsigned long data)
158{
159 struct qeth_ipa_cmd *cmd;
160 __u8 *mac;
161
162 QETH_CARD_TEXT(card, 2, "L2Dgmacb");
163 cmd = (struct qeth_ipa_cmd *) data;
164 mac = &cmd->data.setdelmac.mac[0];
165 if (cmd->hdr.return_code)
166 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
167 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
168 return 0;
169}
170
171static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
172{
173 QETH_CARD_TEXT(card, 2, "L2Dgmac");
174 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
175 qeth_l2_send_delgroupmac_cb);
176}
177
178static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
179{
180 struct qeth_mc_mac *mc;
181 int rc;
182
183 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
184
185 if (!mc)
186 return;
187
188 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
189 mc->mc_addrlen = OSA_ADDR_LEN;
190 mc->is_vmac = vmac;
191
192 if (vmac) {
193 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
194 NULL);
195 } else {
196 rc = qeth_l2_send_setgroupmac(card, mac);
197 }
198
199 if (!rc)
200 list_add_tail(&mc->list, &card->mc_list);
201 else
202 kfree(mc);
203}
204
205static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
206{
207 struct qeth_mc_mac *mc, *tmp;
208
209 spin_lock_bh(&card->mclock);
210 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
211 if (del) {
212 if (mc->is_vmac)
213 qeth_l2_send_setdelmac(card, mc->mc_addr,
214 IPA_CMD_DELVMAC, NULL);
215 else
216 qeth_l2_send_delgroupmac(card, mc->mc_addr);
217 }
218 list_del(&mc->list);
219 kfree(mc);
220 }
221 spin_unlock_bh(&card->mclock);
222}
223
224static inline int qeth_l2_get_cast_type(struct qeth_card *card,
225 struct sk_buff *skb)
226{
227 if (card->info.type == QETH_CARD_TYPE_OSN)
228 return RTN_UNSPEC;
229 if (is_broadcast_ether_addr(skb->data))
230 return RTN_BROADCAST;
231 if (is_multicast_ether_addr(skb->data))
232 return RTN_MULTICAST;
233 return RTN_UNSPEC;
234}
235
236static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
237 struct sk_buff *skb, int ipv, int cast_type)
238{
239 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
240
241 memset(hdr, 0, sizeof(struct qeth_hdr));
242 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
243
244 /* set byte byte 3 to casting flags */
245 if (cast_type == RTN_MULTICAST)
246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
247 else if (cast_type == RTN_BROADCAST)
248 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
249 else
250 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
251
252 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
253 /* VSWITCH relies on the VLAN
254 * information to be present in
255 * the QDIO header */
256 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
257 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
258 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
259 }
260}
261
262static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
263 struct qeth_reply *reply, unsigned long data)
264{
265 struct qeth_ipa_cmd *cmd;
266
267 QETH_CARD_TEXT(card, 2, "L2sdvcb");
268 cmd = (struct qeth_ipa_cmd *) data;
269 if (cmd->hdr.return_code) {
270 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
271 "Continuing\n", cmd->data.setdelvlan.vlan_id,
272 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
273 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
274 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
275 }
276 return 0;
277}
278
279static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
280 enum qeth_ipa_cmds ipacmd)
281{
282 struct qeth_ipa_cmd *cmd;
283 struct qeth_cmd_buffer *iob;
284
285 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
286 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
287 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
288 cmd->data.setdelvlan.vlan_id = i;
289 return qeth_send_ipa_cmd(card, iob,
290 qeth_l2_send_setdelvlan_cb, NULL);
291}
292
293static void qeth_l2_process_vlans(struct qeth_card *card)
294{
295 struct qeth_vlan_vid *id;
296 QETH_CARD_TEXT(card, 3, "L2prcvln");
297 spin_lock_bh(&card->vlanlock);
298 list_for_each_entry(id, &card->vid_list, list) {
299 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
300 }
301 spin_unlock_bh(&card->vlanlock);
302}
303
304static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
305{
306 struct qeth_card *card = dev->ml_priv;
307 struct qeth_vlan_vid *id;
308
309 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
310 if (!vid)
311 return;
312 if (card->info.type == QETH_CARD_TYPE_OSM) {
313 QETH_CARD_TEXT(card, 3, "aidOSM");
314 return;
315 }
316 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
317 QETH_CARD_TEXT(card, 3, "aidREC");
318 return;
319 }
320 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
321 if (id) {
322 id->vid = vid;
323 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
324 spin_lock_bh(&card->vlanlock);
325 list_add_tail(&id->list, &card->vid_list);
326 spin_unlock_bh(&card->vlanlock);
327 }
328}
329
330static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
331{
332 struct qeth_vlan_vid *id, *tmpid = NULL;
333 struct qeth_card *card = dev->ml_priv;
334
335 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
336 if (card->info.type == QETH_CARD_TYPE_OSM) {
337 QETH_CARD_TEXT(card, 3, "kidOSM");
338 return;
339 }
340 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
341 QETH_CARD_TEXT(card, 3, "kidREC");
342 return;
343 }
344 spin_lock_bh(&card->vlanlock);
345 list_for_each_entry(id, &card->vid_list, list) {
346 if (id->vid == vid) {
347 list_del(&id->list);
348 tmpid = id;
349 break;
350 }
351 }
352 spin_unlock_bh(&card->vlanlock);
353 if (tmpid) {
354 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
355 kfree(tmpid);
356 }
357 qeth_l2_set_multicast_list(card->dev);
358}
359
360static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
361{
362 int rc = 0;
363
364 QETH_DBF_TEXT(SETUP , 2, "stopcard");
365 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
366
367 qeth_set_allowed_threads(card, 0, 1);
368 if (card->read.state == CH_STATE_UP &&
369 card->write.state == CH_STATE_UP &&
370 (card->state == CARD_STATE_UP)) {
371 if (recovery_mode &&
372 card->info.type != QETH_CARD_TYPE_OSN) {
373 qeth_l2_stop(card->dev);
374 } else {
375 rtnl_lock();
376 dev_close(card->dev);
377 rtnl_unlock();
378 }
379 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
380 card->state = CARD_STATE_SOFTSETUP;
381 }
382 if (card->state == CARD_STATE_SOFTSETUP) {
383 qeth_l2_del_all_mc(card, 0);
384 qeth_clear_ipacmd_list(card);
385 card->state = CARD_STATE_HARDSETUP;
386 }
387 if (card->state == CARD_STATE_HARDSETUP) {
388 qeth_qdio_clear_card(card, 0);
389 qeth_clear_qdio_buffers(card);
390 qeth_clear_working_pool_list(card);
391 card->state = CARD_STATE_DOWN;
392 }
393 if (card->state == CARD_STATE_DOWN) {
394 qeth_clear_cmd_buffers(&card->read);
395 qeth_clear_cmd_buffers(&card->write);
396 }
397 return rc;
398}
399
400static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
401 int budget, int *done)
402{
403 int work_done = 0;
404 struct sk_buff *skb;
405 struct qeth_hdr *hdr;
406 unsigned int len;
407
408 *done = 0;
409 BUG_ON(!budget);
410 while (budget) {
411 skb = qeth_core_get_next_skb(card,
412 card->qdio.in_q->bufs[card->rx.b_index].buffer,
413 &card->rx.b_element, &card->rx.e_offset, &hdr);
414 if (!skb) {
415 *done = 1;
416 break;
417 }
418 skb->dev = card->dev;
419 switch (hdr->hdr.l2.id) {
420 case QETH_HEADER_TYPE_LAYER2:
421 skb->pkt_type = PACKET_HOST;
422 skb->protocol = eth_type_trans(skb, skb->dev);
423 skb->ip_summed = CHECKSUM_NONE;
424 if (skb->protocol == htons(ETH_P_802_2))
425 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
426 len = skb->len;
427 netif_receive_skb(skb);
428 break;
429 case QETH_HEADER_TYPE_OSN:
430 if (card->info.type == QETH_CARD_TYPE_OSN) {
431 skb_push(skb, sizeof(struct qeth_hdr));
432 skb_copy_to_linear_data(skb, hdr,
433 sizeof(struct qeth_hdr));
434 len = skb->len;
435 card->osn_info.data_cb(skb);
436 break;
437 }
438 /* else unknown */
439 default:
440 dev_kfree_skb_any(skb);
441 QETH_CARD_TEXT(card, 3, "inbunkno");
442 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
443 continue;
444 }
445 work_done++;
446 budget--;
447 card->stats.rx_packets++;
448 card->stats.rx_bytes += len;
449 }
450 return work_done;
451}
452
453static int qeth_l2_poll(struct napi_struct *napi, int budget)
454{
455 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
456 int work_done = 0;
457 struct qeth_qdio_buffer *buffer;
458 int done;
459 int new_budget = budget;
460
461 if (card->options.performance_stats) {
462 card->perf_stats.inbound_cnt++;
463 card->perf_stats.inbound_start_time = qeth_get_micros();
464 }
465
466 while (1) {
467 if (!card->rx.b_count) {
468 card->rx.qdio_err = 0;
469 card->rx.b_count = qdio_get_next_buffers(
470 card->data.ccwdev, 0, &card->rx.b_index,
471 &card->rx.qdio_err);
472 if (card->rx.b_count <= 0) {
473 card->rx.b_count = 0;
474 break;
475 }
476 card->rx.b_element =
477 &card->qdio.in_q->bufs[card->rx.b_index]
478 .buffer->element[0];
479 card->rx.e_offset = 0;
480 }
481
482 while (card->rx.b_count) {
483 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
484 if (!(card->rx.qdio_err &&
485 qeth_check_qdio_errors(card, buffer->buffer,
486 card->rx.qdio_err, "qinerr")))
487 work_done += qeth_l2_process_inbound_buffer(
488 card, new_budget, &done);
489 else
490 done = 1;
491
492 if (done) {
493 if (card->options.performance_stats)
494 card->perf_stats.bufs_rec++;
495 qeth_put_buffer_pool_entry(card,
496 buffer->pool_entry);
497 qeth_queue_input_buffer(card, card->rx.b_index);
498 card->rx.b_count--;
499 if (card->rx.b_count) {
500 card->rx.b_index =
501 (card->rx.b_index + 1) %
502 QDIO_MAX_BUFFERS_PER_Q;
503 card->rx.b_element =
504 &card->qdio.in_q
505 ->bufs[card->rx.b_index]
506 .buffer->element[0];
507 card->rx.e_offset = 0;
508 }
509 }
510
511 if (work_done >= budget)
512 goto out;
513 else
514 new_budget = budget - work_done;
515 }
516 }
517
518 napi_complete(napi);
519 if (qdio_start_irq(card->data.ccwdev, 0))
520 napi_schedule(&card->napi);
521out:
522 if (card->options.performance_stats)
523 card->perf_stats.inbound_time += qeth_get_micros() -
524 card->perf_stats.inbound_start_time;
525 return work_done;
526}
527
528static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
529 enum qeth_ipa_cmds ipacmd,
530 int (*reply_cb) (struct qeth_card *,
531 struct qeth_reply*,
532 unsigned long))
533{
534 struct qeth_ipa_cmd *cmd;
535 struct qeth_cmd_buffer *iob;
536
537 QETH_CARD_TEXT(card, 2, "L2sdmac");
538 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
539 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
540 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
541 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
542 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
543}
544
545static int qeth_l2_send_setmac_cb(struct qeth_card *card,
546 struct qeth_reply *reply,
547 unsigned long data)
548{
549 struct qeth_ipa_cmd *cmd;
550
551 QETH_CARD_TEXT(card, 2, "L2Smaccb");
552 cmd = (struct qeth_ipa_cmd *) data;
553 if (cmd->hdr.return_code) {
554 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
555 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
556 switch (cmd->hdr.return_code) {
557 case IPA_RC_L2_DUP_MAC:
558 case IPA_RC_L2_DUP_LAYER3_MAC:
559 dev_warn(&card->gdev->dev,
560 "MAC address %pM already exists\n",
561 cmd->data.setdelmac.mac);
562 break;
563 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
564 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
565 dev_warn(&card->gdev->dev,
566 "MAC address %pM is not authorized\n",
567 cmd->data.setdelmac.mac);
568 break;
569 default:
570 break;
571 }
572 cmd->hdr.return_code = -EIO;
573 } else {
574 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
575 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
576 OSA_ADDR_LEN);
577 dev_info(&card->gdev->dev,
578 "MAC address %pM successfully registered on device %s\n",
579 card->dev->dev_addr, card->dev->name);
580 }
581 return 0;
582}
583
584static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
585{
586 QETH_CARD_TEXT(card, 2, "L2Setmac");
587 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
588 qeth_l2_send_setmac_cb);
589}
590
591static int qeth_l2_send_delmac_cb(struct qeth_card *card,
592 struct qeth_reply *reply,
593 unsigned long data)
594{
595 struct qeth_ipa_cmd *cmd;
596
597 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
598 cmd = (struct qeth_ipa_cmd *) data;
599 if (cmd->hdr.return_code) {
600 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
601 cmd->hdr.return_code = -EIO;
602 return 0;
603 }
604 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
605
606 return 0;
607}
608
609static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
610{
611 QETH_CARD_TEXT(card, 2, "L2Delmac");
612 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
613 return 0;
614 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
615 qeth_l2_send_delmac_cb);
616}
617
618static int qeth_l2_request_initial_mac(struct qeth_card *card)
619{
620 int rc = 0;
621 char vendor_pre[] = {0x02, 0x00, 0x00};
622
623 QETH_DBF_TEXT(SETUP, 2, "doL2init");
624 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
625
626 rc = qeth_query_setadapterparms(card);
627 if (rc) {
628 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
629 "device %s: x%x\n", CARD_BUS_ID(card), rc);
630 }
631
632 if (card->info.type == QETH_CARD_TYPE_IQD ||
633 card->info.type == QETH_CARD_TYPE_OSM ||
634 card->info.type == QETH_CARD_TYPE_OSX ||
635 card->info.guestlan) {
636 rc = qeth_setadpparms_change_macaddr(card);
637 if (rc) {
638 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
639 "device %s: x%x\n", CARD_BUS_ID(card), rc);
640 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
641 return rc;
642 }
643 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
644 } else {
645 random_ether_addr(card->dev->dev_addr);
646 memcpy(card->dev->dev_addr, vendor_pre, 3);
647 }
648 return 0;
649}
650
651static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
652{
653 struct sockaddr *addr = p;
654 struct qeth_card *card = dev->ml_priv;
655 int rc = 0;
656
657 QETH_CARD_TEXT(card, 3, "setmac");
658
659 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
660 QETH_CARD_TEXT(card, 3, "setmcINV");
661 return -EOPNOTSUPP;
662 }
663
664 if (card->info.type == QETH_CARD_TYPE_OSN ||
665 card->info.type == QETH_CARD_TYPE_OSM ||
666 card->info.type == QETH_CARD_TYPE_OSX) {
667 QETH_CARD_TEXT(card, 3, "setmcTYP");
668 return -EOPNOTSUPP;
669 }
670 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
671 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
672 QETH_CARD_TEXT(card, 3, "setmcREC");
673 return -ERESTARTSYS;
674 }
675 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
676 if (!rc)
677 rc = qeth_l2_send_setmac(card, addr->sa_data);
678 return rc;
679}
680
681static void qeth_l2_set_multicast_list(struct net_device *dev)
682{
683 struct qeth_card *card = dev->ml_priv;
684 struct netdev_hw_addr *ha;
685
686 if (card->info.type == QETH_CARD_TYPE_OSN)
687 return ;
688
689 QETH_CARD_TEXT(card, 3, "setmulti");
690 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
691 (card->state != CARD_STATE_UP))
692 return;
693 qeth_l2_del_all_mc(card, 1);
694 spin_lock_bh(&card->mclock);
695 netdev_for_each_mc_addr(ha, dev)
696 qeth_l2_add_mc(card, ha->addr, 0);
697
698 netdev_for_each_uc_addr(ha, dev)
699 qeth_l2_add_mc(card, ha->addr, 1);
700
701 spin_unlock_bh(&card->mclock);
702 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
703 return;
704 qeth_setadp_promisc_mode(card);
705}
706
707static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
708{
709 int rc;
710 struct qeth_hdr *hdr = NULL;
711 int elements = 0;
712 struct qeth_card *card = dev->ml_priv;
713 struct sk_buff *new_skb = skb;
714 int ipv = qeth_get_ip_version(skb);
715 int cast_type = qeth_l2_get_cast_type(card, skb);
716 struct qeth_qdio_out_q *queue = card->qdio.out_qs
717 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
718 int tx_bytes = skb->len;
719 int data_offset = -1;
720 int elements_needed = 0;
721 int hd_len = 0;
722
723 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
724 card->stats.tx_carrier_errors++;
725 goto tx_drop;
726 }
727
728 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
729 (skb->protocol == htons(ETH_P_IPV6)))
730 goto tx_drop;
731
732 if (card->options.performance_stats) {
733 card->perf_stats.outbound_cnt++;
734 card->perf_stats.outbound_start_time = qeth_get_micros();
735 }
736 netif_stop_queue(dev);
737
738 if (card->info.type == QETH_CARD_TYPE_OSN)
739 hdr = (struct qeth_hdr *)skb->data;
740 else {
741 if (card->info.type == QETH_CARD_TYPE_IQD) {
742 new_skb = skb;
743 data_offset = ETH_HLEN;
744 hd_len = ETH_HLEN;
745 hdr = kmem_cache_alloc(qeth_core_header_cache,
746 GFP_ATOMIC);
747 if (!hdr)
748 goto tx_drop;
749 elements_needed++;
750 skb_reset_mac_header(new_skb);
751 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
752 hdr->hdr.l2.pkt_length = new_skb->len;
753 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
754 skb_mac_header(new_skb), ETH_HLEN);
755 } else {
756 /* create a clone with writeable headroom */
757 new_skb = skb_realloc_headroom(skb,
758 sizeof(struct qeth_hdr));
759 if (!new_skb)
760 goto tx_drop;
761 hdr = (struct qeth_hdr *)skb_push(new_skb,
762 sizeof(struct qeth_hdr));
763 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
764 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
765 }
766 }
767
768 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
769 elements_needed);
770 if (!elements) {
771 if (data_offset >= 0)
772 kmem_cache_free(qeth_core_header_cache, hdr);
773 goto tx_drop;
774 }
775
776 if (card->info.type != QETH_CARD_TYPE_IQD) {
777 if (qeth_hdr_chk_and_bounce(new_skb,
778 sizeof(struct qeth_hdr_layer2)))
779 goto tx_drop;
780 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
781 elements);
782 } else
783 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
784 elements, data_offset, hd_len);
785 if (!rc) {
786 card->stats.tx_packets++;
787 card->stats.tx_bytes += tx_bytes;
788 if (new_skb != skb)
789 dev_kfree_skb_any(skb);
790 rc = NETDEV_TX_OK;
791 } else {
792 if (data_offset >= 0)
793 kmem_cache_free(qeth_core_header_cache, hdr);
794
795 if (rc == -EBUSY) {
796 if (new_skb != skb)
797 dev_kfree_skb_any(new_skb);
798 return NETDEV_TX_BUSY;
799 } else
800 goto tx_drop;
801 }
802
803 netif_wake_queue(dev);
804 if (card->options.performance_stats)
805 card->perf_stats.outbound_time += qeth_get_micros() -
806 card->perf_stats.outbound_start_time;
807 return rc;
808
809tx_drop:
810 card->stats.tx_dropped++;
811 card->stats.tx_errors++;
812 if ((new_skb != skb) && new_skb)
813 dev_kfree_skb_any(new_skb);
814 dev_kfree_skb_any(skb);
815 netif_wake_queue(dev);
816 return NETDEV_TX_OK;
817}
818
819static int __qeth_l2_open(struct net_device *dev)
820{
821 struct qeth_card *card = dev->ml_priv;
822 int rc = 0;
823
824 QETH_CARD_TEXT(card, 4, "qethopen");
825 if (card->state == CARD_STATE_UP)
826 return rc;
827 if (card->state != CARD_STATE_SOFTSETUP)
828 return -ENODEV;
829
830 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
831 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
832 QETH_CARD_TEXT(card, 4, "nomacadr");
833 return -EPERM;
834 }
835 card->data.state = CH_STATE_UP;
836 card->state = CARD_STATE_UP;
837 netif_start_queue(dev);
838
839 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
840 napi_enable(&card->napi);
841 napi_schedule(&card->napi);
842 } else
843 rc = -EIO;
844 return rc;
845}
846
847static int qeth_l2_open(struct net_device *dev)
848{
849 struct qeth_card *card = dev->ml_priv;
850
851 QETH_CARD_TEXT(card, 5, "qethope_");
852 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
853 QETH_CARD_TEXT(card, 3, "openREC");
854 return -ERESTARTSYS;
855 }
856 return __qeth_l2_open(dev);
857}
858
859static int qeth_l2_stop(struct net_device *dev)
860{
861 struct qeth_card *card = dev->ml_priv;
862
863 QETH_CARD_TEXT(card, 4, "qethstop");
864 netif_tx_disable(dev);
865 if (card->state == CARD_STATE_UP) {
866 card->state = CARD_STATE_SOFTSETUP;
867 napi_disable(&card->napi);
868 }
869 return 0;
870}
871
872static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
873{
874 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
875
876 INIT_LIST_HEAD(&card->vid_list);
877 INIT_LIST_HEAD(&card->mc_list);
878 card->options.layer2 = 1;
879 card->info.hwtrap = 0;
880 card->discipline.start_poll = qeth_qdio_start_poll;
881 card->discipline.input_handler = (qdio_handler_t *)
882 qeth_qdio_input_handler;
883 card->discipline.output_handler = (qdio_handler_t *)
884 qeth_qdio_output_handler;
885 card->discipline.recover = qeth_l2_recover;
886 return 0;
887}
888
889static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
890{
891 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
892
893 qeth_set_allowed_threads(card, 0, 1);
894 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
895
896 if (cgdev->state == CCWGROUP_ONLINE)
897 qeth_l2_set_offline(cgdev);
898
899 if (card->dev) {
900 unregister_netdev(card->dev);
901 card->dev = NULL;
902 }
903 return;
904}
905
906static const struct ethtool_ops qeth_l2_ethtool_ops = {
907 .get_link = ethtool_op_get_link,
908 .get_strings = qeth_core_get_strings,
909 .get_ethtool_stats = qeth_core_get_ethtool_stats,
910 .get_sset_count = qeth_core_get_sset_count,
911 .get_drvinfo = qeth_core_get_drvinfo,
912 .get_settings = qeth_core_ethtool_get_settings,
913};
914
915static const struct ethtool_ops qeth_l2_osn_ops = {
916 .get_strings = qeth_core_get_strings,
917 .get_ethtool_stats = qeth_core_get_ethtool_stats,
918 .get_sset_count = qeth_core_get_sset_count,
919 .get_drvinfo = qeth_core_get_drvinfo,
920};
921
922static const struct net_device_ops qeth_l2_netdev_ops = {
923 .ndo_open = qeth_l2_open,
924 .ndo_stop = qeth_l2_stop,
925 .ndo_get_stats = qeth_get_stats,
926 .ndo_start_xmit = qeth_l2_hard_start_xmit,
927 .ndo_validate_addr = eth_validate_addr,
928 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
929 .ndo_do_ioctl = qeth_l2_do_ioctl,
930 .ndo_set_mac_address = qeth_l2_set_mac_address,
931 .ndo_change_mtu = qeth_change_mtu,
932 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
933 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
934 .ndo_tx_timeout = qeth_tx_timeout,
935};
936
937static int qeth_l2_setup_netdev(struct qeth_card *card)
938{
939 switch (card->info.type) {
940 case QETH_CARD_TYPE_IQD:
941 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
942 break;
943 case QETH_CARD_TYPE_OSN:
944 card->dev = alloc_netdev(0, "osn%d", ether_setup);
945 card->dev->flags |= IFF_NOARP;
946 break;
947 default:
948 card->dev = alloc_etherdev(0);
949 }
950
951 if (!card->dev)
952 return -ENODEV;
953
954 card->dev->ml_priv = card;
955 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
956 card->dev->mtu = card->info.initial_mtu;
957 card->dev->netdev_ops = &qeth_l2_netdev_ops;
958 if (card->info.type != QETH_CARD_TYPE_OSN)
959 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
960 else
961 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
962 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
963 card->info.broadcast_capable = 1;
964 qeth_l2_request_initial_mac(card);
965 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
966 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
967 return register_netdev(card->dev);
968}
969
970static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
971{
972 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
973 int rc = 0;
974 enum qeth_card_states recover_flag;
975
976 BUG_ON(!card);
977 mutex_lock(&card->discipline_mutex);
978 mutex_lock(&card->conf_mutex);
979 QETH_DBF_TEXT(SETUP, 2, "setonlin");
980 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
981
982 recover_flag = card->state;
983 rc = qeth_core_hardsetup_card(card);
984 if (rc) {
985 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
986 rc = -ENODEV;
987 goto out_remove;
988 }
989
990 if (!card->dev && qeth_l2_setup_netdev(card)) {
991 rc = -ENODEV;
992 goto out_remove;
993 }
994
995 if (card->info.type != QETH_CARD_TYPE_OSN)
996 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
997
998 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
999 if (card->info.hwtrap &&
1000 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1001 card->info.hwtrap = 0;
1002 } else
1003 card->info.hwtrap = 0;
1004
1005 card->state = CARD_STATE_HARDSETUP;
1006 memset(&card->rx, 0, sizeof(struct qeth_rx));
1007 qeth_print_status_message(card);
1008
1009 /* softsetup */
1010 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1011
1012 rc = qeth_send_startlan(card);
1013 if (rc) {
1014 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1015 if (rc == 0xe080) {
1016 dev_warn(&card->gdev->dev,
1017 "The LAN is offline\n");
1018 card->lan_online = 0;
1019 goto contin;
1020 }
1021 rc = -ENODEV;
1022 goto out_remove;
1023 } else
1024 card->lan_online = 1;
1025
1026contin:
1027 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1028 (card->info.type == QETH_CARD_TYPE_OSX))
1029 /* configure isolation level */
1030 qeth_set_access_ctrl_online(card);
1031
1032 if (card->info.type != QETH_CARD_TYPE_OSN &&
1033 card->info.type != QETH_CARD_TYPE_OSM)
1034 qeth_l2_process_vlans(card);
1035
1036 netif_tx_disable(card->dev);
1037
1038 rc = qeth_init_qdio_queues(card);
1039 if (rc) {
1040 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1041 rc = -ENODEV;
1042 goto out_remove;
1043 }
1044 card->state = CARD_STATE_SOFTSETUP;
1045 if (card->lan_online)
1046 netif_carrier_on(card->dev);
1047 else
1048 netif_carrier_off(card->dev);
1049
1050 qeth_set_allowed_threads(card, 0xffffffff, 0);
1051 if (recover_flag == CARD_STATE_RECOVER) {
1052 if (recovery_mode &&
1053 card->info.type != QETH_CARD_TYPE_OSN) {
1054 __qeth_l2_open(card->dev);
1055 } else {
1056 rtnl_lock();
1057 dev_open(card->dev);
1058 rtnl_unlock();
1059 }
1060 /* this also sets saved unicast addresses */
1061 qeth_l2_set_multicast_list(card->dev);
1062 }
1063 /* let user_space know that device is online */
1064 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1065 mutex_unlock(&card->conf_mutex);
1066 mutex_unlock(&card->discipline_mutex);
1067 return 0;
1068
1069out_remove:
1070 qeth_l2_stop_card(card, 0);
1071 ccw_device_set_offline(CARD_DDEV(card));
1072 ccw_device_set_offline(CARD_WDEV(card));
1073 ccw_device_set_offline(CARD_RDEV(card));
1074 if (recover_flag == CARD_STATE_RECOVER)
1075 card->state = CARD_STATE_RECOVER;
1076 else
1077 card->state = CARD_STATE_DOWN;
1078 mutex_unlock(&card->conf_mutex);
1079 mutex_unlock(&card->discipline_mutex);
1080 return rc;
1081}
1082
1083static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1084{
1085 return __qeth_l2_set_online(gdev, 0);
1086}
1087
1088static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1089 int recovery_mode)
1090{
1091 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1092 int rc = 0, rc2 = 0, rc3 = 0;
1093 enum qeth_card_states recover_flag;
1094
1095 mutex_lock(&card->discipline_mutex);
1096 mutex_lock(&card->conf_mutex);
1097 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1098 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1099
1100 if (card->dev && netif_carrier_ok(card->dev))
1101 netif_carrier_off(card->dev);
1102 recover_flag = card->state;
1103 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1104 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1105 card->info.hwtrap = 1;
1106 }
1107 qeth_l2_stop_card(card, recovery_mode);
1108 rc = ccw_device_set_offline(CARD_DDEV(card));
1109 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1110 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1111 if (!rc)
1112 rc = (rc2) ? rc2 : rc3;
1113 if (rc)
1114 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1115 if (recover_flag == CARD_STATE_UP)
1116 card->state = CARD_STATE_RECOVER;
1117 /* let user_space know that device is offline */
1118 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1119 mutex_unlock(&card->conf_mutex);
1120 mutex_unlock(&card->discipline_mutex);
1121 return 0;
1122}
1123
1124static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1125{
1126 return __qeth_l2_set_offline(cgdev, 0);
1127}
1128
1129static int qeth_l2_recover(void *ptr)
1130{
1131 struct qeth_card *card;
1132 int rc = 0;
1133
1134 card = (struct qeth_card *) ptr;
1135 QETH_CARD_TEXT(card, 2, "recover1");
1136 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1137 return 0;
1138 QETH_CARD_TEXT(card, 2, "recover2");
1139 dev_warn(&card->gdev->dev,
1140 "A recovery process has been started for the device\n");
1141 __qeth_l2_set_offline(card->gdev, 1);
1142 rc = __qeth_l2_set_online(card->gdev, 1);
1143 if (!rc)
1144 dev_info(&card->gdev->dev,
1145 "Device successfully recovered!\n");
1146 else {
1147 rtnl_lock();
1148 dev_close(card->dev);
1149 rtnl_unlock();
1150 dev_warn(&card->gdev->dev, "The qeth device driver "
1151 "failed to recover an error on the device\n");
1152 }
1153 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1154 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1155 return 0;
1156}
1157
1158static int __init qeth_l2_init(void)
1159{
1160 pr_info("register layer 2 discipline\n");
1161 return 0;
1162}
1163
1164static void __exit qeth_l2_exit(void)
1165{
1166 pr_info("unregister layer 2 discipline\n");
1167}
1168
1169static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1170{
1171 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1172 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1173 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1174 qeth_qdio_clear_card(card, 0);
1175 qeth_clear_qdio_buffers(card);
1176}
1177
1178static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1179{
1180 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1181
1182 if (card->dev)
1183 netif_device_detach(card->dev);
1184 qeth_set_allowed_threads(card, 0, 1);
1185 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1186 if (gdev->state == CCWGROUP_OFFLINE)
1187 return 0;
1188 if (card->state == CARD_STATE_UP) {
1189 if (card->info.hwtrap)
1190 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1191 __qeth_l2_set_offline(card->gdev, 1);
1192 } else
1193 __qeth_l2_set_offline(card->gdev, 0);
1194 return 0;
1195}
1196
1197static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1198{
1199 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1200 int rc = 0;
1201
1202 if (gdev->state == CCWGROUP_OFFLINE)
1203 goto out;
1204
1205 if (card->state == CARD_STATE_RECOVER) {
1206 rc = __qeth_l2_set_online(card->gdev, 1);
1207 if (rc) {
1208 rtnl_lock();
1209 dev_close(card->dev);
1210 rtnl_unlock();
1211 }
1212 } else
1213 rc = __qeth_l2_set_online(card->gdev, 0);
1214out:
1215 qeth_set_allowed_threads(card, 0xffffffff, 0);
1216 if (card->dev)
1217 netif_device_attach(card->dev);
1218 if (rc)
1219 dev_warn(&card->gdev->dev, "The qeth device driver "
1220 "failed to recover an error on the device\n");
1221 return rc;
1222}
1223
1224struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1225 .probe = qeth_l2_probe_device,
1226 .remove = qeth_l2_remove_device,
1227 .set_online = qeth_l2_set_online,
1228 .set_offline = qeth_l2_set_offline,
1229 .shutdown = qeth_l2_shutdown,
1230 .freeze = qeth_l2_pm_suspend,
1231 .thaw = qeth_l2_pm_resume,
1232 .restore = qeth_l2_pm_resume,
1233};
1234EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1235
1236static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1237 struct qeth_cmd_buffer *iob)
1238{
1239 unsigned long flags;
1240 int rc = 0;
1241
1242 QETH_CARD_TEXT(card, 5, "osndctrd");
1243
1244 wait_event(card->wait_q,
1245 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1246 qeth_prepare_control_data(card, len, iob);
1247 QETH_CARD_TEXT(card, 6, "osnoirqp");
1248 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1249 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1250 (addr_t) iob, 0, 0);
1251 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1252 if (rc) {
1253 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1254 "ccw_device_start rc = %i\n", rc);
1255 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1256 qeth_release_buffer(iob->channel, iob);
1257 atomic_set(&card->write.irq_pending, 0);
1258 wake_up(&card->wait_q);
1259 }
1260 return rc;
1261}
1262
1263static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1264 struct qeth_cmd_buffer *iob, int data_len)
1265{
1266 u16 s1, s2;
1267
1268 QETH_CARD_TEXT(card, 4, "osndipa");
1269
1270 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1271 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1272 s2 = (u16)data_len;
1273 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1274 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1275 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1276 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1277 return qeth_osn_send_control_data(card, s1, iob);
1278}
1279
1280int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1281{
1282 struct qeth_cmd_buffer *iob;
1283 struct qeth_card *card;
1284 int rc;
1285
1286 if (!dev)
1287 return -ENODEV;
1288 card = dev->ml_priv;
1289 if (!card)
1290 return -ENODEV;
1291 QETH_CARD_TEXT(card, 2, "osnsdmc");
1292 if ((card->state != CARD_STATE_UP) &&
1293 (card->state != CARD_STATE_SOFTSETUP))
1294 return -ENODEV;
1295 iob = qeth_wait_for_buffer(&card->write);
1296 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1297 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1298 return rc;
1299}
1300EXPORT_SYMBOL(qeth_osn_assist);
1301
1302int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1303 int (*assist_cb)(struct net_device *, void *),
1304 int (*data_cb)(struct sk_buff *))
1305{
1306 struct qeth_card *card;
1307
1308 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1309 if (*dev == NULL)
1310 return -ENODEV;
1311 card = (*dev)->ml_priv;
1312 if (!card)
1313 return -ENODEV;
1314 QETH_CARD_TEXT(card, 2, "osnreg");
1315 if ((assist_cb == NULL) || (data_cb == NULL))
1316 return -EINVAL;
1317 card->osn_info.assist_cb = assist_cb;
1318 card->osn_info.data_cb = data_cb;
1319 return 0;
1320}
1321EXPORT_SYMBOL(qeth_osn_register);
1322
1323void qeth_osn_deregister(struct net_device *dev)
1324{
1325 struct qeth_card *card;
1326
1327 if (!dev)
1328 return;
1329 card = dev->ml_priv;
1330 if (!card)
1331 return;
1332 QETH_CARD_TEXT(card, 2, "osndereg");
1333 card->osn_info.assist_cb = NULL;
1334 card->osn_info.data_cb = NULL;
1335 return;
1336}
1337EXPORT_SYMBOL(qeth_osn_deregister);
1338
1339module_init(qeth_l2_init);
1340module_exit(qeth_l2_exit);
1341MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1342MODULE_DESCRIPTION("qeth layer 2 discipline");
1343MODULE_LICENSE("GPL");
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/list.h>
21#include <linux/hash.h>
22#include <linux/hashtable.h>
23#include <asm/setup.h>
24#include "qeth_core.h"
25#include "qeth_l2.h"
26
27static int qeth_l2_set_offline(struct ccwgroup_device *);
28static void qeth_bridgeport_query_support(struct qeth_card *card);
29static void qeth_bridge_state_change(struct qeth_card *card,
30 struct qeth_ipa_cmd *cmd);
31static void qeth_bridge_host_event(struct qeth_card *card,
32 struct qeth_ipa_cmd *cmd);
33static void qeth_l2_vnicc_set_defaults(struct qeth_card *card);
34static void qeth_l2_vnicc_init(struct qeth_card *card);
35static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
36 u32 *timeout);
37
38static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode)
39{
40 int rc;
41
42 if (retcode)
43 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
44 switch (retcode) {
45 case IPA_RC_SUCCESS:
46 rc = 0;
47 break;
48 case IPA_RC_L2_UNSUPPORTED_CMD:
49 rc = -EOPNOTSUPP;
50 break;
51 case IPA_RC_L2_ADDR_TABLE_FULL:
52 rc = -ENOSPC;
53 break;
54 case IPA_RC_L2_DUP_MAC:
55 case IPA_RC_L2_DUP_LAYER3_MAC:
56 rc = -EEXIST;
57 break;
58 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
59 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
60 rc = -EPERM;
61 break;
62 case IPA_RC_L2_MAC_NOT_FOUND:
63 rc = -ENOENT;
64 break;
65 default:
66 rc = -EIO;
67 break;
68 }
69 return rc;
70}
71
72static int qeth_l2_send_setdelmac_cb(struct qeth_card *card,
73 struct qeth_reply *reply,
74 unsigned long data)
75{
76 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
77
78 return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code);
79}
80
81static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
82 enum qeth_ipa_cmds ipacmd)
83{
84 struct qeth_ipa_cmd *cmd;
85 struct qeth_cmd_buffer *iob;
86
87 QETH_CARD_TEXT(card, 2, "L2sdmac");
88 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
89 IPA_DATA_SIZEOF(setdelmac));
90 if (!iob)
91 return -ENOMEM;
92 cmd = __ipa_cmd(iob);
93 cmd->data.setdelmac.mac_length = ETH_ALEN;
94 ether_addr_copy(cmd->data.setdelmac.mac, mac);
95 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelmac_cb, NULL);
96}
97
98static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
99{
100 int rc;
101
102 QETH_CARD_TEXT(card, 2, "L2Setmac");
103 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
104 if (rc == 0) {
105 dev_info(&card->gdev->dev,
106 "MAC address %pM successfully registered\n", mac);
107 } else {
108 switch (rc) {
109 case -EEXIST:
110 dev_warn(&card->gdev->dev,
111 "MAC address %pM already exists\n", mac);
112 break;
113 case -EPERM:
114 dev_warn(&card->gdev->dev,
115 "MAC address %pM is not authorized\n", mac);
116 break;
117 }
118 }
119 return rc;
120}
121
122static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
123{
124 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
125 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
126 int rc;
127
128 QETH_CARD_TEXT(card, 2, "L2Wmac");
129 rc = qeth_l2_send_setdelmac(card, mac, cmd);
130 if (rc == -EEXIST)
131 QETH_DBF_MESSAGE(2, "MAC already registered on device %x\n",
132 CARD_DEVID(card));
133 else if (rc)
134 QETH_DBF_MESSAGE(2, "Failed to register MAC on device %x: %d\n",
135 CARD_DEVID(card), rc);
136 return rc;
137}
138
139static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
140{
141 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
142 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
143 int rc;
144
145 QETH_CARD_TEXT(card, 2, "L2Rmac");
146 rc = qeth_l2_send_setdelmac(card, mac, cmd);
147 if (rc)
148 QETH_DBF_MESSAGE(2, "Failed to delete MAC on device %u: %d\n",
149 CARD_DEVID(card), rc);
150 return rc;
151}
152
153static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card)
154{
155 struct qeth_mac *mac;
156 struct hlist_node *tmp;
157 int i;
158
159 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
160 hash_del(&mac->hnode);
161 kfree(mac);
162 }
163}
164
165static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue,
166 struct qeth_hdr *hdr, struct sk_buff *skb,
167 int ipv, unsigned int data_len)
168{
169 int cast_type = qeth_get_ether_cast_type(skb);
170 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
171
172 hdr->hdr.l2.pkt_length = data_len;
173
174 if (skb_is_gso(skb)) {
175 hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO;
176 } else {
177 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
178 if (skb->ip_summed == CHECKSUM_PARTIAL)
179 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv);
180 }
181
182 /* set byte byte 3 to casting flags */
183 if (cast_type == RTN_MULTICAST)
184 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
185 else if (cast_type == RTN_BROADCAST)
186 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
187 else
188 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
189
190 /* VSWITCH relies on the VLAN
191 * information to be present in
192 * the QDIO header */
193 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
194 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
195 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
196 }
197}
198
199static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode)
200{
201 if (retcode)
202 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
203
204 switch (retcode) {
205 case IPA_RC_SUCCESS:
206 return 0;
207 case IPA_RC_L2_INVALID_VLAN_ID:
208 return -EINVAL;
209 case IPA_RC_L2_DUP_VLAN_ID:
210 return -EEXIST;
211 case IPA_RC_L2_VLAN_ID_NOT_FOUND:
212 return -ENOENT;
213 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
214 return -EPERM;
215 default:
216 return -EIO;
217 }
218}
219
220static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
221 struct qeth_reply *reply,
222 unsigned long data)
223{
224 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
225
226 QETH_CARD_TEXT(card, 2, "L2sdvcb");
227 if (cmd->hdr.return_code) {
228 QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n",
229 cmd->data.setdelvlan.vlan_id,
230 CARD_DEVID(card), cmd->hdr.return_code);
231 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
232 }
233 return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code);
234}
235
236static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
237 enum qeth_ipa_cmds ipacmd)
238{
239 struct qeth_ipa_cmd *cmd;
240 struct qeth_cmd_buffer *iob;
241
242 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
243 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
244 IPA_DATA_SIZEOF(setdelvlan));
245 if (!iob)
246 return -ENOMEM;
247 cmd = __ipa_cmd(iob);
248 cmd->data.setdelvlan.vlan_id = i;
249 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelvlan_cb, NULL);
250}
251
252static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
253 __be16 proto, u16 vid)
254{
255 struct qeth_card *card = dev->ml_priv;
256
257 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
258 if (!vid)
259 return 0;
260
261 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
262}
263
264static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
265 __be16 proto, u16 vid)
266{
267 struct qeth_card *card = dev->ml_priv;
268
269 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
270 if (!vid)
271 return 0;
272
273 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
274}
275
276static void qeth_l2_stop_card(struct qeth_card *card)
277{
278 QETH_CARD_TEXT(card, 2, "stopcard");
279
280 qeth_set_allowed_threads(card, 0, 1);
281
282 cancel_work_sync(&card->rx_mode_work);
283 qeth_l2_drain_rx_mode_cache(card);
284
285 if (card->state == CARD_STATE_SOFTSETUP) {
286 qeth_clear_ipacmd_list(card);
287 card->state = CARD_STATE_HARDSETUP;
288 }
289 if (card->state == CARD_STATE_HARDSETUP) {
290 qeth_qdio_clear_card(card, 0);
291 qeth_drain_output_queues(card);
292 qeth_clear_working_pool_list(card);
293 card->state = CARD_STATE_DOWN;
294 }
295
296 flush_workqueue(card->event_wq);
297 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
298}
299
300static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
301 int budget, int *done)
302{
303 int work_done = 0;
304 struct sk_buff *skb;
305 struct qeth_hdr *hdr;
306 unsigned int len;
307
308 *done = 0;
309 WARN_ON_ONCE(!budget);
310 while (budget) {
311 skb = qeth_core_get_next_skb(card,
312 &card->qdio.in_q->bufs[card->rx.b_index],
313 &card->rx.b_element, &card->rx.e_offset, &hdr);
314 if (!skb) {
315 *done = 1;
316 break;
317 }
318 switch (hdr->hdr.l2.id) {
319 case QETH_HEADER_TYPE_LAYER2:
320 skb->protocol = eth_type_trans(skb, skb->dev);
321 qeth_rx_csum(card, skb, hdr->hdr.l2.flags[1]);
322 len = skb->len;
323 napi_gro_receive(&card->napi, skb);
324 break;
325 case QETH_HEADER_TYPE_OSN:
326 if (IS_OSN(card)) {
327 skb_push(skb, sizeof(struct qeth_hdr));
328 skb_copy_to_linear_data(skb, hdr,
329 sizeof(struct qeth_hdr));
330 len = skb->len;
331 card->osn_info.data_cb(skb);
332 break;
333 }
334 /* Else, fall through */
335 default:
336 dev_kfree_skb_any(skb);
337 QETH_CARD_TEXT(card, 3, "inbunkno");
338 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
339 continue;
340 }
341 work_done++;
342 budget--;
343 QETH_CARD_STAT_INC(card, rx_packets);
344 QETH_CARD_STAT_ADD(card, rx_bytes, len);
345 }
346 return work_done;
347}
348
349static int qeth_l2_request_initial_mac(struct qeth_card *card)
350{
351 int rc = 0;
352
353 QETH_CARD_TEXT(card, 2, "l2reqmac");
354
355 if (MACHINE_IS_VM) {
356 rc = qeth_vm_request_mac(card);
357 if (!rc)
358 goto out;
359 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n",
360 CARD_DEVID(card), rc);
361 QETH_CARD_TEXT_(card, 2, "err%04x", rc);
362 /* fall back to alternative mechanism: */
363 }
364
365 if (!IS_OSN(card)) {
366 rc = qeth_setadpparms_change_macaddr(card);
367 if (!rc)
368 goto out;
369 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n",
370 CARD_DEVID(card), rc);
371 QETH_CARD_TEXT_(card, 2, "1err%04x", rc);
372 /* fall back once more: */
373 }
374
375 /* some devices don't support a custom MAC address: */
376 if (IS_OSM(card) || IS_OSX(card))
377 return (rc) ? rc : -EADDRNOTAVAIL;
378 eth_hw_addr_random(card->dev);
379
380out:
381 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len);
382 return 0;
383}
384
385static void qeth_l2_register_dev_addr(struct qeth_card *card)
386{
387 if (!is_valid_ether_addr(card->dev->dev_addr))
388 qeth_l2_request_initial_mac(card);
389
390 if (!IS_OSN(card) && !qeth_l2_send_setmac(card, card->dev->dev_addr))
391 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
392}
393
394static int qeth_l2_validate_addr(struct net_device *dev)
395{
396 struct qeth_card *card = dev->ml_priv;
397
398 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)
399 return eth_validate_addr(dev);
400
401 QETH_CARD_TEXT(card, 4, "nomacadr");
402 return -EPERM;
403}
404
405static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
406{
407 struct sockaddr *addr = p;
408 struct qeth_card *card = dev->ml_priv;
409 u8 old_addr[ETH_ALEN];
410 int rc = 0;
411
412 QETH_CARD_TEXT(card, 3, "setmac");
413
414 if (IS_OSM(card) || IS_OSX(card)) {
415 QETH_CARD_TEXT(card, 3, "setmcTYP");
416 return -EOPNOTSUPP;
417 }
418 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN);
419 if (!is_valid_ether_addr(addr->sa_data))
420 return -EADDRNOTAVAIL;
421
422 /* don't register the same address twice */
423 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) &&
424 (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
425 return 0;
426
427 /* add the new address, switch over, drop the old */
428 rc = qeth_l2_send_setmac(card, addr->sa_data);
429 if (rc)
430 return rc;
431 ether_addr_copy(old_addr, dev->dev_addr);
432 ether_addr_copy(dev->dev_addr, addr->sa_data);
433
434 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)
435 qeth_l2_remove_mac(card, old_addr);
436 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
437 return 0;
438}
439
440static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable)
441{
442 int role;
443 int rc;
444
445 QETH_CARD_TEXT(card, 3, "pmisc2br");
446
447 if (enable) {
448 if (card->options.sbp.reflect_promisc_primary)
449 role = QETH_SBP_ROLE_PRIMARY;
450 else
451 role = QETH_SBP_ROLE_SECONDARY;
452 } else
453 role = QETH_SBP_ROLE_NONE;
454
455 rc = qeth_bridgeport_setrole(card, role);
456 QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc);
457 if (!rc) {
458 card->options.sbp.role = role;
459 card->info.promisc_mode = enable;
460 }
461}
462
463static void qeth_l2_set_promisc_mode(struct qeth_card *card)
464{
465 bool enable = card->dev->flags & IFF_PROMISC;
466
467 if (card->info.promisc_mode == enable)
468 return;
469
470 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) {
471 qeth_setadp_promisc_mode(card, enable);
472 } else {
473 mutex_lock(&card->sbp_lock);
474 if (card->options.sbp.reflect_promisc)
475 qeth_l2_promisc_to_bridge(card, enable);
476 mutex_unlock(&card->sbp_lock);
477 }
478}
479
480/* New MAC address is added to the hash table and marked to be written on card
481 * only if there is not in the hash table storage already
482 *
483*/
484static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha)
485{
486 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
487 struct qeth_mac *mac;
488
489 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) {
490 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) {
491 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
492 return;
493 }
494 }
495
496 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
497 if (!mac)
498 return;
499
500 ether_addr_copy(mac->mac_addr, ha->addr);
501 mac->disp_flag = QETH_DISP_ADDR_ADD;
502
503 hash_add(card->mac_htable, &mac->hnode, mac_hash);
504}
505
506static void qeth_l2_rx_mode_work(struct work_struct *work)
507{
508 struct qeth_card *card = container_of(work, struct qeth_card,
509 rx_mode_work);
510 struct net_device *dev = card->dev;
511 struct netdev_hw_addr *ha;
512 struct qeth_mac *mac;
513 struct hlist_node *tmp;
514 int i;
515 int rc;
516
517 QETH_CARD_TEXT(card, 3, "setmulti");
518
519 netif_addr_lock_bh(dev);
520 netdev_for_each_mc_addr(ha, dev)
521 qeth_l2_add_mac(card, ha);
522 netdev_for_each_uc_addr(ha, dev)
523 qeth_l2_add_mac(card, ha);
524 netif_addr_unlock_bh(dev);
525
526 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
527 switch (mac->disp_flag) {
528 case QETH_DISP_ADDR_DELETE:
529 qeth_l2_remove_mac(card, mac->mac_addr);
530 hash_del(&mac->hnode);
531 kfree(mac);
532 break;
533 case QETH_DISP_ADDR_ADD:
534 rc = qeth_l2_write_mac(card, mac->mac_addr);
535 if (rc) {
536 hash_del(&mac->hnode);
537 kfree(mac);
538 break;
539 }
540 /* fall through */
541 default:
542 /* for next call to set_rx_mode(): */
543 mac->disp_flag = QETH_DISP_ADDR_DELETE;
544 }
545 }
546
547 qeth_l2_set_promisc_mode(card);
548}
549
550static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
551 struct qeth_qdio_out_q *queue)
552{
553 struct qeth_hdr *hdr = (struct qeth_hdr *)skb->data;
554 addr_t end = (addr_t)(skb->data + sizeof(*hdr));
555 addr_t start = (addr_t)skb->data;
556 unsigned int elements = 0;
557 unsigned int hd_len = 0;
558 int rc;
559
560 if (skb->protocol == htons(ETH_P_IPV6))
561 return -EPROTONOSUPPORT;
562
563 if (qeth_get_elements_for_range(start, end) > 1) {
564 /* Misaligned HW header, move it to its own buffer element. */
565 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
566 if (!hdr)
567 return -ENOMEM;
568 hd_len = sizeof(*hdr);
569 skb_copy_from_linear_data(skb, (char *)hdr, hd_len);
570 elements++;
571 }
572
573 elements += qeth_count_elements(skb, hd_len);
574 if (elements > queue->max_elements) {
575 rc = -E2BIG;
576 goto out;
577 }
578
579 rc = qeth_do_send_packet(card, queue, skb, hdr, hd_len, hd_len,
580 elements);
581out:
582 if (rc && hd_len)
583 kmem_cache_free(qeth_core_header_cache, hdr);
584 return rc;
585}
586
587static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
588 struct net_device *dev)
589{
590 struct qeth_card *card = dev->ml_priv;
591 u16 txq = skb_get_queue_mapping(skb);
592 struct qeth_qdio_out_q *queue;
593 int rc;
594
595 if (!skb_is_gso(skb))
596 qdisc_skb_cb(skb)->pkt_len = skb->len;
597 if (IS_IQD(card))
598 txq = qeth_iqd_translate_txq(dev, txq);
599 queue = card->qdio.out_qs[txq];
600
601 if (IS_OSN(card))
602 rc = qeth_l2_xmit_osn(card, skb, queue);
603 else
604 rc = qeth_xmit(card, skb, queue, qeth_get_ip_version(skb),
605 qeth_l2_fill_header);
606
607 if (!rc)
608 return NETDEV_TX_OK;
609
610 QETH_TXQ_STAT_INC(queue, tx_dropped);
611 kfree_skb(skb);
612 return NETDEV_TX_OK;
613}
614
615static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb,
616 struct net_device *sb_dev)
617{
618 struct qeth_card *card = dev->ml_priv;
619
620 if (IS_IQD(card))
621 return qeth_iqd_select_queue(dev, skb,
622 qeth_get_ether_cast_type(skb),
623 sb_dev);
624 return qeth_get_priority_queue(card, skb);
625}
626
627static const struct device_type qeth_l2_devtype = {
628 .name = "qeth_layer2",
629 .groups = qeth_l2_attr_groups,
630};
631
632static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
633{
634 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
635 int rc;
636
637 qeth_l2_vnicc_set_defaults(card);
638 mutex_init(&card->sbp_lock);
639
640 if (gdev->dev.type == &qeth_generic_devtype) {
641 rc = qeth_l2_create_device_attributes(&gdev->dev);
642 if (rc)
643 return rc;
644 }
645
646 hash_init(card->mac_htable);
647 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work);
648 return 0;
649}
650
651static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
652{
653 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
654
655 if (cgdev->dev.type == &qeth_generic_devtype)
656 qeth_l2_remove_device_attributes(&cgdev->dev);
657 qeth_set_allowed_threads(card, 0, 1);
658 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
659
660 if (cgdev->state == CCWGROUP_ONLINE)
661 qeth_l2_set_offline(cgdev);
662
663 cancel_work_sync(&card->close_dev_work);
664 if (qeth_netdev_is_registered(card->dev))
665 unregister_netdev(card->dev);
666}
667
668static void qeth_l2_set_rx_mode(struct net_device *dev)
669{
670 struct qeth_card *card = dev->ml_priv;
671
672 schedule_work(&card->rx_mode_work);
673}
674
675static const struct net_device_ops qeth_l2_netdev_ops = {
676 .ndo_open = qeth_open,
677 .ndo_stop = qeth_stop,
678 .ndo_get_stats64 = qeth_get_stats64,
679 .ndo_start_xmit = qeth_l2_hard_start_xmit,
680 .ndo_features_check = qeth_features_check,
681 .ndo_select_queue = qeth_l2_select_queue,
682 .ndo_validate_addr = qeth_l2_validate_addr,
683 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
684 .ndo_do_ioctl = qeth_do_ioctl,
685 .ndo_set_mac_address = qeth_l2_set_mac_address,
686 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
687 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
688 .ndo_tx_timeout = qeth_tx_timeout,
689 .ndo_fix_features = qeth_fix_features,
690 .ndo_set_features = qeth_set_features
691};
692
693static const struct net_device_ops qeth_osn_netdev_ops = {
694 .ndo_open = qeth_open,
695 .ndo_stop = qeth_stop,
696 .ndo_get_stats64 = qeth_get_stats64,
697 .ndo_start_xmit = qeth_l2_hard_start_xmit,
698 .ndo_validate_addr = eth_validate_addr,
699 .ndo_tx_timeout = qeth_tx_timeout,
700};
701
702static int qeth_l2_setup_netdev(struct qeth_card *card, bool carrier_ok)
703{
704 int rc;
705
706 if (IS_OSN(card)) {
707 card->dev->netdev_ops = &qeth_osn_netdev_ops;
708 card->dev->flags |= IFF_NOARP;
709 goto add_napi;
710 }
711
712 card->dev->needed_headroom = sizeof(struct qeth_hdr);
713 card->dev->netdev_ops = &qeth_l2_netdev_ops;
714 card->dev->priv_flags |= IFF_UNICAST_FLT;
715
716 if (IS_OSM(card)) {
717 card->dev->features |= NETIF_F_VLAN_CHALLENGED;
718 } else {
719 if (!IS_VM_NIC(card))
720 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
721 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
722 }
723
724 if (IS_OSD(card) && !IS_VM_NIC(card)) {
725 card->dev->features |= NETIF_F_SG;
726 /* OSA 3S and earlier has no RX/TX support */
727 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
728 card->dev->hw_features |= NETIF_F_IP_CSUM;
729 card->dev->vlan_features |= NETIF_F_IP_CSUM;
730 }
731 }
732 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
733 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
734 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
735 }
736 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) ||
737 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) {
738 card->dev->hw_features |= NETIF_F_RXCSUM;
739 card->dev->vlan_features |= NETIF_F_RXCSUM;
740 }
741 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
742 card->dev->hw_features |= NETIF_F_TSO;
743 card->dev->vlan_features |= NETIF_F_TSO;
744 }
745 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
746 card->dev->hw_features |= NETIF_F_TSO6;
747 card->dev->vlan_features |= NETIF_F_TSO6;
748 }
749
750 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) {
751 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso);
752 netif_set_gso_max_size(card->dev,
753 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1));
754 }
755
756add_napi:
757 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
758 rc = register_netdev(card->dev);
759 if (!rc && carrier_ok)
760 netif_carrier_on(card->dev);
761
762 if (rc)
763 card->dev->netdev_ops = NULL;
764 return rc;
765}
766
767static int qeth_l2_start_ipassists(struct qeth_card *card)
768{
769 /* configure isolation level */
770 if (qeth_set_access_ctrl_online(card, 0))
771 return -ENODEV;
772 return 0;
773}
774
775static void qeth_l2_trace_features(struct qeth_card *card)
776{
777 /* Set BridgePort features */
778 QETH_CARD_TEXT(card, 2, "featuSBP");
779 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
780 sizeof(card->options.sbp.supported_funcs));
781 /* VNIC Characteristics features */
782 QETH_CARD_TEXT(card, 2, "feaVNICC");
783 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
784 sizeof(card->options.vnicc.sup_chars));
785}
786
787static int qeth_l2_set_online(struct ccwgroup_device *gdev)
788{
789 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
790 struct net_device *dev = card->dev;
791 int rc = 0;
792 bool carrier_ok;
793
794 mutex_lock(&card->discipline_mutex);
795 mutex_lock(&card->conf_mutex);
796 QETH_CARD_TEXT(card, 2, "setonlin");
797
798 rc = qeth_core_hardsetup_card(card, &carrier_ok);
799 if (rc) {
800 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
801 rc = -ENODEV;
802 goto out_remove;
803 }
804
805 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
806 if (card->info.hwtrap &&
807 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
808 card->info.hwtrap = 0;
809 } else
810 card->info.hwtrap = 0;
811
812 mutex_lock(&card->sbp_lock);
813 qeth_bridgeport_query_support(card);
814 if (card->options.sbp.supported_funcs)
815 dev_info(&card->gdev->dev,
816 "The device represents a Bridge Capable Port\n");
817 mutex_unlock(&card->sbp_lock);
818
819 qeth_l2_register_dev_addr(card);
820
821 /* for the rx_bcast characteristic, init VNICC after setmac */
822 qeth_l2_vnicc_init(card);
823
824 qeth_trace_features(card);
825 qeth_l2_trace_features(card);
826
827 qeth_l2_setup_bridgeport_attrs(card);
828
829 card->state = CARD_STATE_HARDSETUP;
830 qeth_print_status_message(card);
831
832 /* softsetup */
833 QETH_CARD_TEXT(card, 2, "softsetp");
834
835 if (IS_OSD(card) || IS_OSX(card)) {
836 rc = qeth_l2_start_ipassists(card);
837 if (rc)
838 goto out_remove;
839 }
840
841 rc = qeth_init_qdio_queues(card);
842 if (rc) {
843 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
844 rc = -ENODEV;
845 goto out_remove;
846 }
847 card->state = CARD_STATE_SOFTSETUP;
848
849 qeth_set_allowed_threads(card, 0xffffffff, 0);
850
851 if (!qeth_netdev_is_registered(dev)) {
852 rc = qeth_l2_setup_netdev(card, carrier_ok);
853 if (rc)
854 goto out_remove;
855 } else {
856 rtnl_lock();
857 if (carrier_ok)
858 netif_carrier_on(dev);
859 else
860 netif_carrier_off(dev);
861
862 netif_device_attach(dev);
863 qeth_enable_hw_features(dev);
864
865 if (card->info.open_when_online) {
866 card->info.open_when_online = 0;
867 dev_open(dev, NULL);
868 }
869 rtnl_unlock();
870 }
871 /* let user_space know that device is online */
872 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
873 mutex_unlock(&card->conf_mutex);
874 mutex_unlock(&card->discipline_mutex);
875 return 0;
876
877out_remove:
878 qeth_l2_stop_card(card);
879 ccw_device_set_offline(CARD_DDEV(card));
880 ccw_device_set_offline(CARD_WDEV(card));
881 ccw_device_set_offline(CARD_RDEV(card));
882 qdio_free(CARD_DDEV(card));
883
884 mutex_unlock(&card->conf_mutex);
885 mutex_unlock(&card->discipline_mutex);
886 return rc;
887}
888
889static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
890 int recovery_mode)
891{
892 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
893 int rc = 0, rc2 = 0, rc3 = 0;
894
895 mutex_lock(&card->discipline_mutex);
896 mutex_lock(&card->conf_mutex);
897 QETH_CARD_TEXT(card, 3, "setoffl");
898
899 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
900 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
901 card->info.hwtrap = 1;
902 }
903
904 rtnl_lock();
905 card->info.open_when_online = card->dev->flags & IFF_UP;
906 dev_close(card->dev);
907 netif_device_detach(card->dev);
908 netif_carrier_off(card->dev);
909 rtnl_unlock();
910
911 qeth_l2_stop_card(card);
912 rc = ccw_device_set_offline(CARD_DDEV(card));
913 rc2 = ccw_device_set_offline(CARD_WDEV(card));
914 rc3 = ccw_device_set_offline(CARD_RDEV(card));
915 if (!rc)
916 rc = (rc2) ? rc2 : rc3;
917 if (rc)
918 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
919 qdio_free(CARD_DDEV(card));
920
921 /* let user_space know that device is offline */
922 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
923 mutex_unlock(&card->conf_mutex);
924 mutex_unlock(&card->discipline_mutex);
925 return 0;
926}
927
928static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
929{
930 return __qeth_l2_set_offline(cgdev, 0);
931}
932
933static int qeth_l2_recover(void *ptr)
934{
935 struct qeth_card *card;
936 int rc = 0;
937
938 card = (struct qeth_card *) ptr;
939 QETH_CARD_TEXT(card, 2, "recover1");
940 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
941 return 0;
942 QETH_CARD_TEXT(card, 2, "recover2");
943 dev_warn(&card->gdev->dev,
944 "A recovery process has been started for the device\n");
945 __qeth_l2_set_offline(card->gdev, 1);
946 rc = qeth_l2_set_online(card->gdev);
947 if (!rc)
948 dev_info(&card->gdev->dev,
949 "Device successfully recovered!\n");
950 else {
951 ccwgroup_set_offline(card->gdev);
952 dev_warn(&card->gdev->dev, "The qeth device driver "
953 "failed to recover an error on the device\n");
954 }
955 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
956 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
957 return 0;
958}
959
960static int __init qeth_l2_init(void)
961{
962 pr_info("register layer 2 discipline\n");
963 return 0;
964}
965
966static void __exit qeth_l2_exit(void)
967{
968 pr_info("unregister layer 2 discipline\n");
969}
970
971/* Returns zero if the command is successfully "consumed" */
972static int qeth_l2_control_event(struct qeth_card *card,
973 struct qeth_ipa_cmd *cmd)
974{
975 switch (cmd->hdr.command) {
976 case IPA_CMD_SETBRIDGEPORT_OSA:
977 case IPA_CMD_SETBRIDGEPORT_IQD:
978 if (cmd->data.sbp.hdr.command_code ==
979 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
980 qeth_bridge_state_change(card, cmd);
981 return 0;
982 } else
983 return 1;
984 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
985 qeth_bridge_host_event(card, cmd);
986 return 0;
987 default:
988 return 1;
989 }
990}
991
992struct qeth_discipline qeth_l2_discipline = {
993 .devtype = &qeth_l2_devtype,
994 .process_rx_buffer = qeth_l2_process_inbound_buffer,
995 .recover = qeth_l2_recover,
996 .setup = qeth_l2_probe_device,
997 .remove = qeth_l2_remove_device,
998 .set_online = qeth_l2_set_online,
999 .set_offline = qeth_l2_set_offline,
1000 .do_ioctl = NULL,
1001 .control_event_handler = qeth_l2_control_event,
1002};
1003EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1004
1005static void qeth_osn_assist_cb(struct qeth_card *card,
1006 struct qeth_cmd_buffer *iob,
1007 unsigned int data_length)
1008{
1009 qeth_notify_cmd(iob, 0);
1010 qeth_put_cmd(iob);
1011}
1012
1013int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1014{
1015 struct qeth_cmd_buffer *iob;
1016 struct qeth_card *card;
1017
1018 if (data_len < 0)
1019 return -EINVAL;
1020 if (!dev)
1021 return -ENODEV;
1022 card = dev->ml_priv;
1023 if (!card)
1024 return -ENODEV;
1025 QETH_CARD_TEXT(card, 2, "osnsdmc");
1026 if (!qeth_card_hw_is_reachable(card))
1027 return -ENODEV;
1028
1029 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_len, 1,
1030 QETH_IPA_TIMEOUT);
1031 if (!iob)
1032 return -ENOMEM;
1033
1034 qeth_prepare_ipa_cmd(card, iob, (u16) data_len);
1035 memcpy(__ipa_cmd(iob), data, data_len);
1036 iob->callback = qeth_osn_assist_cb;
1037 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
1038}
1039EXPORT_SYMBOL(qeth_osn_assist);
1040
1041int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1042 int (*assist_cb)(struct net_device *, void *),
1043 int (*data_cb)(struct sk_buff *))
1044{
1045 struct qeth_card *card;
1046 char bus_id[16];
1047 u16 devno;
1048
1049 memcpy(&devno, read_dev_no, 2);
1050 sprintf(bus_id, "0.0.%04x", devno);
1051 card = qeth_get_card_by_busid(bus_id);
1052 if (!card || !IS_OSN(card))
1053 return -ENODEV;
1054 *dev = card->dev;
1055
1056 QETH_CARD_TEXT(card, 2, "osnreg");
1057 if ((assist_cb == NULL) || (data_cb == NULL))
1058 return -EINVAL;
1059 card->osn_info.assist_cb = assist_cb;
1060 card->osn_info.data_cb = data_cb;
1061 return 0;
1062}
1063EXPORT_SYMBOL(qeth_osn_register);
1064
1065void qeth_osn_deregister(struct net_device *dev)
1066{
1067 struct qeth_card *card;
1068
1069 if (!dev)
1070 return;
1071 card = dev->ml_priv;
1072 if (!card)
1073 return;
1074 QETH_CARD_TEXT(card, 2, "osndereg");
1075 card->osn_info.assist_cb = NULL;
1076 card->osn_info.data_cb = NULL;
1077 return;
1078}
1079EXPORT_SYMBOL(qeth_osn_deregister);
1080
1081/* SETBRIDGEPORT support, async notifications */
1082
1083enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1084
1085/**
1086 * qeth_bridge_emit_host_event() - bridgeport address change notification
1087 * @card: qeth_card structure pointer, for udev events.
1088 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1089 * and reset token and addr_lnid are unused and may be NULL.
1090 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1091 * object, 0 - addition of an object.
1092 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1093 * @token: "network token" structure identifying physical address of the port.
1094 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1095 *
1096 * This function is called when registrations and deregistrations are
1097 * reported by the hardware, and also when notifications are enabled -
1098 * for all currently registered addresses.
1099 */
1100static void qeth_bridge_emit_host_event(struct qeth_card *card,
1101 enum qeth_an_event_type evtype,
1102 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1103{
1104 char str[7][32];
1105 char *env[8];
1106 int i = 0;
1107
1108 switch (evtype) {
1109 case anev_reg_unreg:
1110 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1111 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1112 ? "deregister" : "register");
1113 env[i] = str[i]; i++;
1114 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1115 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1116 addr_lnid->lnid);
1117 env[i] = str[i]; i++;
1118 }
1119 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1120 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1121 addr_lnid->mac);
1122 env[i] = str[i]; i++;
1123 }
1124 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1125 token->cssid, token->ssid, token->devnum);
1126 env[i] = str[i]; i++;
1127 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1128 env[i] = str[i]; i++;
1129 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1130 token->chpid);
1131 env[i] = str[i]; i++;
1132 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1133 env[i] = str[i]; i++;
1134 break;
1135 case anev_abort:
1136 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1137 env[i] = str[i]; i++;
1138 break;
1139 case anev_reset:
1140 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1141 env[i] = str[i]; i++;
1142 break;
1143 }
1144 env[i] = NULL;
1145 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1146}
1147
1148struct qeth_bridge_state_data {
1149 struct work_struct worker;
1150 struct qeth_card *card;
1151 struct qeth_sbp_state_change qports;
1152};
1153
1154static void qeth_bridge_state_change_worker(struct work_struct *work)
1155{
1156 struct qeth_bridge_state_data *data =
1157 container_of(work, struct qeth_bridge_state_data, worker);
1158 /* We are only interested in the first entry - local port */
1159 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1160 char env_locrem[32];
1161 char env_role[32];
1162 char env_state[32];
1163 char *env[] = {
1164 env_locrem,
1165 env_role,
1166 env_state,
1167 NULL
1168 };
1169
1170 /* Role should not change by itself, but if it did, */
1171 /* information from the hardware is authoritative. */
1172 mutex_lock(&data->card->sbp_lock);
1173 data->card->options.sbp.role = entry->role;
1174 mutex_unlock(&data->card->sbp_lock);
1175
1176 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1177 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1178 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1179 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1180 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1181 "<INVALID>");
1182 snprintf(env_state, sizeof(env_state), "STATE=%s",
1183 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1184 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1185 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1186 "<INVALID>");
1187 kobject_uevent_env(&data->card->gdev->dev.kobj,
1188 KOBJ_CHANGE, env);
1189 kfree(data);
1190}
1191
1192static void qeth_bridge_state_change(struct qeth_card *card,
1193 struct qeth_ipa_cmd *cmd)
1194{
1195 struct qeth_sbp_state_change *qports =
1196 &cmd->data.sbp.data.state_change;
1197 struct qeth_bridge_state_data *data;
1198 int extrasize;
1199
1200 QETH_CARD_TEXT(card, 2, "brstchng");
1201 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1202 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1203 return;
1204 }
1205 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1206 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1207 GFP_ATOMIC);
1208 if (!data) {
1209 QETH_CARD_TEXT(card, 2, "BPSalloc");
1210 return;
1211 }
1212 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1213 data->card = card;
1214 memcpy(&data->qports, qports,
1215 sizeof(struct qeth_sbp_state_change) + extrasize);
1216 queue_work(card->event_wq, &data->worker);
1217}
1218
1219struct qeth_bridge_host_data {
1220 struct work_struct worker;
1221 struct qeth_card *card;
1222 struct qeth_ipacmd_addr_change hostevs;
1223};
1224
1225static void qeth_bridge_host_event_worker(struct work_struct *work)
1226{
1227 struct qeth_bridge_host_data *data =
1228 container_of(work, struct qeth_bridge_host_data, worker);
1229 int i;
1230
1231 if (data->hostevs.lost_event_mask) {
1232 dev_info(&data->card->gdev->dev,
1233"Address notification from the Bridge Port stopped %s (%s)\n",
1234 data->card->dev->name,
1235 (data->hostevs.lost_event_mask == 0x01)
1236 ? "Overflow"
1237 : (data->hostevs.lost_event_mask == 0x02)
1238 ? "Bridge port state change"
1239 : "Unknown reason");
1240 mutex_lock(&data->card->sbp_lock);
1241 data->card->options.sbp.hostnotification = 0;
1242 mutex_unlock(&data->card->sbp_lock);
1243 qeth_bridge_emit_host_event(data->card, anev_abort,
1244 0, NULL, NULL);
1245 } else
1246 for (i = 0; i < data->hostevs.num_entries; i++) {
1247 struct qeth_ipacmd_addr_change_entry *entry =
1248 &data->hostevs.entry[i];
1249 qeth_bridge_emit_host_event(data->card,
1250 anev_reg_unreg,
1251 entry->change_code,
1252 &entry->token, &entry->addr_lnid);
1253 }
1254 kfree(data);
1255}
1256
1257static void qeth_bridge_host_event(struct qeth_card *card,
1258 struct qeth_ipa_cmd *cmd)
1259{
1260 struct qeth_ipacmd_addr_change *hostevs =
1261 &cmd->data.addrchange;
1262 struct qeth_bridge_host_data *data;
1263 int extrasize;
1264
1265 QETH_CARD_TEXT(card, 2, "brhostev");
1266 if (cmd->hdr.return_code != 0x0000) {
1267 if (cmd->hdr.return_code == 0x0010) {
1268 if (hostevs->lost_event_mask == 0x00)
1269 hostevs->lost_event_mask = 0xff;
1270 } else {
1271 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1272 cmd->hdr.return_code);
1273 return;
1274 }
1275 }
1276 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1277 hostevs->num_entries;
1278 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1279 GFP_ATOMIC);
1280 if (!data) {
1281 QETH_CARD_TEXT(card, 2, "BPHalloc");
1282 return;
1283 }
1284 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1285 data->card = card;
1286 memcpy(&data->hostevs, hostevs,
1287 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1288 queue_work(card->event_wq, &data->worker);
1289}
1290
1291/* SETBRIDGEPORT support; sending commands */
1292
1293struct _qeth_sbp_cbctl {
1294 union {
1295 u32 supported;
1296 struct {
1297 enum qeth_sbp_roles *role;
1298 enum qeth_sbp_states *state;
1299 } qports;
1300 } data;
1301};
1302
1303static int qeth_bridgeport_makerc(struct qeth_card *card,
1304 struct qeth_ipa_cmd *cmd)
1305{
1306 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp;
1307 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code;
1308 u16 ipa_rc = cmd->hdr.return_code;
1309 u16 sbp_rc = sbp->hdr.return_code;
1310 int rc;
1311
1312 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS)
1313 return 0;
1314
1315 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) ||
1316 (!IS_IQD(card) && ipa_rc == sbp_rc)) {
1317 switch (sbp_rc) {
1318 case IPA_RC_SUCCESS:
1319 rc = 0;
1320 break;
1321 case IPA_RC_L2_UNSUPPORTED_CMD:
1322 case IPA_RC_UNSUPPORTED_COMMAND:
1323 rc = -EOPNOTSUPP;
1324 break;
1325 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1326 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1327 rc = -ENODEV; /* maybe not the best code here? */
1328 dev_err(&card->gdev->dev,
1329 "The device is not configured as a Bridge Port\n");
1330 break;
1331 case IPA_RC_SBP_OSA_OS_MISMATCH:
1332 case IPA_RC_SBP_IQD_OS_MISMATCH:
1333 rc = -EPERM;
1334 dev_err(&card->gdev->dev,
1335 "A Bridge Port is already configured by a different operating system\n");
1336 break;
1337 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1338 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1339 switch (setcmd) {
1340 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1341 rc = -EEXIST;
1342 dev_err(&card->gdev->dev,
1343 "The LAN already has a primary Bridge Port\n");
1344 break;
1345 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1346 rc = -EBUSY;
1347 dev_err(&card->gdev->dev,
1348 "The device is already a primary Bridge Port\n");
1349 break;
1350 default:
1351 rc = -EIO;
1352 }
1353 break;
1354 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1355 case IPA_RC_SBP_IQD_CURRENT_SECOND:
1356 rc = -EBUSY;
1357 dev_err(&card->gdev->dev,
1358 "The device is already a secondary Bridge Port\n");
1359 break;
1360 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1361 case IPA_RC_SBP_IQD_LIMIT_SECOND:
1362 rc = -EEXIST;
1363 dev_err(&card->gdev->dev,
1364 "The LAN cannot have more secondary Bridge Ports\n");
1365 break;
1366 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1367 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1368 rc = -EBUSY;
1369 dev_err(&card->gdev->dev,
1370 "The device is already a primary Bridge Port\n");
1371 break;
1372 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1373 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1374 rc = -EACCES;
1375 dev_err(&card->gdev->dev,
1376 "The device is not authorized to be a Bridge Port\n");
1377 break;
1378 default:
1379 rc = -EIO;
1380 }
1381 } else {
1382 switch (ipa_rc) {
1383 case IPA_RC_NOTSUPP:
1384 rc = -EOPNOTSUPP;
1385 break;
1386 case IPA_RC_UNSUPPORTED_COMMAND:
1387 rc = -EOPNOTSUPP;
1388 break;
1389 default:
1390 rc = -EIO;
1391 }
1392 }
1393
1394 if (rc) {
1395 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc);
1396 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc);
1397 }
1398 return rc;
1399}
1400
1401static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1402 enum qeth_ipa_sbp_cmd sbp_cmd,
1403 unsigned int data_length)
1404{
1405 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD :
1406 IPA_CMD_SETBRIDGEPORT_OSA;
1407 struct qeth_ipacmd_sbp_hdr *hdr;
1408 struct qeth_cmd_buffer *iob;
1409
1410 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE,
1411 data_length +
1412 offsetof(struct qeth_ipacmd_setbridgeport,
1413 data));
1414 if (!iob)
1415 return iob;
1416
1417 hdr = &__ipa_cmd(iob)->data.sbp.hdr;
1418 hdr->cmdlength = sizeof(*hdr) + data_length;
1419 hdr->command_code = sbp_cmd;
1420 hdr->used_total = 1;
1421 hdr->seq_no = 1;
1422 return iob;
1423}
1424
1425static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1426 struct qeth_reply *reply, unsigned long data)
1427{
1428 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1429 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1430 int rc;
1431
1432 QETH_CARD_TEXT(card, 2, "brqsupcb");
1433 rc = qeth_bridgeport_makerc(card, cmd);
1434 if (rc)
1435 return rc;
1436
1437 cbctl->data.supported =
1438 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1439 return 0;
1440}
1441
1442/**
1443 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1444 * @card: qeth_card structure pointer.
1445 *
1446 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1447 * strucutre: card->options.sbp.supported_funcs.
1448 */
1449static void qeth_bridgeport_query_support(struct qeth_card *card)
1450{
1451 struct qeth_cmd_buffer *iob;
1452 struct _qeth_sbp_cbctl cbctl;
1453
1454 QETH_CARD_TEXT(card, 2, "brqsuppo");
1455 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1456 SBP_DATA_SIZEOF(query_cmds_supp));
1457 if (!iob)
1458 return;
1459
1460 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1461 &cbctl)) {
1462 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1463 card->options.sbp.supported_funcs = 0;
1464 return;
1465 }
1466 card->options.sbp.supported_funcs = cbctl.data.supported;
1467}
1468
1469static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1470 struct qeth_reply *reply, unsigned long data)
1471{
1472 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1473 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1474 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1475 int rc;
1476
1477 QETH_CARD_TEXT(card, 2, "brqprtcb");
1478 rc = qeth_bridgeport_makerc(card, cmd);
1479 if (rc)
1480 return rc;
1481
1482 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1483 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1484 return -EINVAL;
1485 }
1486 /* first entry contains the state of the local port */
1487 if (qports->num_entries > 0) {
1488 if (cbctl->data.qports.role)
1489 *cbctl->data.qports.role = qports->entry[0].role;
1490 if (cbctl->data.qports.state)
1491 *cbctl->data.qports.state = qports->entry[0].state;
1492 }
1493 return 0;
1494}
1495
1496/**
1497 * qeth_bridgeport_query_ports() - query local bridgeport status.
1498 * @card: qeth_card structure pointer.
1499 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1500 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1501 *
1502 * Returns negative errno-compatible error indication or 0 on success.
1503 *
1504 * 'role' and 'state' are not updated in case of hardware operation failure.
1505 */
1506int qeth_bridgeport_query_ports(struct qeth_card *card,
1507 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1508{
1509 struct qeth_cmd_buffer *iob;
1510 struct _qeth_sbp_cbctl cbctl = {
1511 .data = {
1512 .qports = {
1513 .role = role,
1514 .state = state,
1515 },
1516 },
1517 };
1518
1519 QETH_CARD_TEXT(card, 2, "brqports");
1520 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1521 return -EOPNOTSUPP;
1522 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1523 if (!iob)
1524 return -ENOMEM;
1525
1526 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1527 &cbctl);
1528}
1529
1530static int qeth_bridgeport_set_cb(struct qeth_card *card,
1531 struct qeth_reply *reply, unsigned long data)
1532{
1533 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1534
1535 QETH_CARD_TEXT(card, 2, "brsetrcb");
1536 return qeth_bridgeport_makerc(card, cmd);
1537}
1538
1539/**
1540 * qeth_bridgeport_setrole() - Assign primary role to the port.
1541 * @card: qeth_card structure pointer.
1542 * @role: Role to assign.
1543 *
1544 * Returns negative errno-compatible error indication or 0 on success.
1545 */
1546int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1547{
1548 struct qeth_cmd_buffer *iob;
1549 enum qeth_ipa_sbp_cmd setcmd;
1550 unsigned int cmdlength = 0;
1551
1552 QETH_CARD_TEXT(card, 2, "brsetrol");
1553 switch (role) {
1554 case QETH_SBP_ROLE_NONE:
1555 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1556 break;
1557 case QETH_SBP_ROLE_PRIMARY:
1558 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1559 cmdlength = SBP_DATA_SIZEOF(set_primary);
1560 break;
1561 case QETH_SBP_ROLE_SECONDARY:
1562 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1563 break;
1564 default:
1565 return -EINVAL;
1566 }
1567 if (!(card->options.sbp.supported_funcs & setcmd))
1568 return -EOPNOTSUPP;
1569 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1570 if (!iob)
1571 return -ENOMEM;
1572
1573 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL);
1574}
1575
1576/**
1577 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1578 * @card: qeth_card structure pointer, for debug messages.
1579 *
1580 * Returns negative errno-compatible error indication or 0 on success.
1581 */
1582static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1583{
1584 int rc;
1585
1586 if (pnso_rc == 0)
1587 switch (response) {
1588 case 0x0001:
1589 rc = 0;
1590 break;
1591 case 0x0004:
1592 case 0x0100:
1593 case 0x0106:
1594 rc = -EOPNOTSUPP;
1595 dev_err(&card->gdev->dev,
1596 "Setting address notification failed\n");
1597 break;
1598 case 0x0107:
1599 rc = -EAGAIN;
1600 break;
1601 default:
1602 rc = -EIO;
1603 }
1604 else
1605 rc = -EIO;
1606
1607 if (rc) {
1608 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1609 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1610 }
1611 return rc;
1612}
1613
1614static void qeth_bridgeport_an_set_cb(void *priv,
1615 enum qdio_brinfo_entry_type type, void *entry)
1616{
1617 struct qeth_card *card = (struct qeth_card *)priv;
1618 struct qdio_brinfo_entry_l2 *l2entry;
1619 u8 code;
1620
1621 if (type != l2_addr_lnid) {
1622 WARN_ON_ONCE(1);
1623 return;
1624 }
1625
1626 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1627 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1628 if (l2entry->addr_lnid.lnid < VLAN_N_VID)
1629 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1630 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1631 (struct net_if_token *)&l2entry->nit,
1632 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1633}
1634
1635/**
1636 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1637 * @card: qeth_card structure pointer.
1638 * @enable: 0 - disable, non-zero - enable notifications
1639 *
1640 * Returns negative errno-compatible error indication or 0 on success.
1641 *
1642 * On enable, emits a series of address notifications udev events for all
1643 * currently registered hosts.
1644 */
1645int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1646{
1647 int rc;
1648 u16 response;
1649 struct ccw_device *ddev;
1650 struct subchannel_id schid;
1651
1652 if (!card)
1653 return -EINVAL;
1654 if (!card->options.sbp.supported_funcs)
1655 return -EOPNOTSUPP;
1656 ddev = CARD_DDEV(card);
1657 ccw_device_get_schid(ddev, &schid);
1658
1659 if (enable) {
1660 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1661 rc = qdio_pnso_brinfo(schid, 1, &response,
1662 qeth_bridgeport_an_set_cb, card);
1663 } else
1664 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
1665 return qeth_anset_makerc(card, rc, response);
1666}
1667
1668static bool qeth_bridgeport_is_in_use(struct qeth_card *card)
1669{
1670 return (card->options.sbp.role || card->options.sbp.reflect_promisc ||
1671 card->options.sbp.hostnotification);
1672}
1673
1674/* VNIC Characteristics support */
1675
1676/* handle VNICC IPA command return codes; convert to error codes */
1677static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc)
1678{
1679 int rc;
1680
1681 switch (ipa_rc) {
1682 case IPA_RC_SUCCESS:
1683 return ipa_rc;
1684 case IPA_RC_L2_UNSUPPORTED_CMD:
1685 case IPA_RC_NOTSUPP:
1686 rc = -EOPNOTSUPP;
1687 break;
1688 case IPA_RC_VNICC_OOSEQ:
1689 rc = -EALREADY;
1690 break;
1691 case IPA_RC_VNICC_VNICBP:
1692 rc = -EBUSY;
1693 break;
1694 case IPA_RC_L2_ADDR_TABLE_FULL:
1695 rc = -ENOSPC;
1696 break;
1697 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
1698 rc = -EACCES;
1699 break;
1700 default:
1701 rc = -EIO;
1702 }
1703
1704 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
1705 return rc;
1706}
1707
1708/* generic VNICC request call back control */
1709struct _qeth_l2_vnicc_request_cbctl {
1710 struct {
1711 union{
1712 u32 *sup_cmds;
1713 u32 *timeout;
1714 };
1715 } result;
1716};
1717
1718/* generic VNICC request call back */
1719static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
1720 struct qeth_reply *reply,
1721 unsigned long data)
1722{
1723 struct _qeth_l2_vnicc_request_cbctl *cbctl =
1724 (struct _qeth_l2_vnicc_request_cbctl *) reply->param;
1725 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1726 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
1727 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command;
1728
1729 QETH_CARD_TEXT(card, 2, "vniccrcb");
1730 if (cmd->hdr.return_code)
1731 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code);
1732 /* return results to caller */
1733 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported;
1734 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled;
1735
1736 if (sub_cmd == IPA_VNICC_QUERY_CMDS)
1737 *cbctl->result.sup_cmds = rep->data.query_cmds.sup_cmds;
1738 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT)
1739 *cbctl->result.timeout = rep->data.getset_timeout.timeout;
1740
1741 return 0;
1742}
1743
1744static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card,
1745 u32 vnicc_cmd,
1746 unsigned int data_length)
1747{
1748 struct qeth_ipacmd_vnicc_hdr *hdr;
1749 struct qeth_cmd_buffer *iob;
1750
1751 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE,
1752 data_length +
1753 offsetof(struct qeth_ipacmd_vnicc, data));
1754 if (!iob)
1755 return NULL;
1756
1757 hdr = &__ipa_cmd(iob)->data.vnicc.hdr;
1758 hdr->data_length = sizeof(*hdr) + data_length;
1759 hdr->sub_command = vnicc_cmd;
1760 return iob;
1761}
1762
1763/* VNICC query VNIC characteristics request */
1764static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
1765{
1766 struct qeth_cmd_buffer *iob;
1767
1768 QETH_CARD_TEXT(card, 2, "vniccqch");
1769 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0);
1770 if (!iob)
1771 return -ENOMEM;
1772
1773 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1774}
1775
1776/* VNICC query sub commands request */
1777static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
1778 u32 *sup_cmds)
1779{
1780 struct _qeth_l2_vnicc_request_cbctl cbctl;
1781 struct qeth_cmd_buffer *iob;
1782
1783 QETH_CARD_TEXT(card, 2, "vniccqcm");
1784 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS,
1785 VNICC_DATA_SIZEOF(query_cmds));
1786 if (!iob)
1787 return -ENOMEM;
1788
1789 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char;
1790
1791 /* prepare callback control */
1792 cbctl.result.sup_cmds = sup_cmds;
1793
1794 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl);
1795}
1796
1797/* VNICC enable/disable characteristic request */
1798static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
1799 u32 cmd)
1800{
1801 struct qeth_cmd_buffer *iob;
1802
1803 QETH_CARD_TEXT(card, 2, "vniccedc");
1804 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char));
1805 if (!iob)
1806 return -ENOMEM;
1807
1808 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char;
1809
1810 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1811}
1812
1813/* VNICC get/set timeout for characteristic request */
1814static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
1815 u32 cmd, u32 *timeout)
1816{
1817 struct qeth_vnicc_getset_timeout *getset_timeout;
1818 struct _qeth_l2_vnicc_request_cbctl cbctl;
1819 struct qeth_cmd_buffer *iob;
1820
1821 QETH_CARD_TEXT(card, 2, "vniccgst");
1822 iob = qeth_l2_vnicc_build_cmd(card, cmd,
1823 VNICC_DATA_SIZEOF(getset_timeout));
1824 if (!iob)
1825 return -ENOMEM;
1826
1827 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout;
1828 getset_timeout->vnic_char = vnicc;
1829
1830 if (cmd == IPA_VNICC_SET_TIMEOUT)
1831 getset_timeout->timeout = *timeout;
1832
1833 /* prepare callback control */
1834 if (cmd == IPA_VNICC_GET_TIMEOUT)
1835 cbctl.result.timeout = timeout;
1836
1837 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl);
1838}
1839
1840/* set current VNICC flag state; called from sysfs store function */
1841int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
1842{
1843 int rc = 0;
1844 u32 cmd;
1845
1846 QETH_CARD_TEXT(card, 2, "vniccsch");
1847
1848 /* do not change anything if BridgePort is enabled */
1849 if (qeth_bridgeport_is_in_use(card))
1850 return -EBUSY;
1851
1852 /* check if characteristic and enable/disable are supported */
1853 if (!(card->options.vnicc.sup_chars & vnicc) ||
1854 !(card->options.vnicc.set_char_sup & vnicc))
1855 return -EOPNOTSUPP;
1856
1857 /* set enable/disable command and store wanted characteristic */
1858 if (state) {
1859 cmd = IPA_VNICC_ENABLE;
1860 card->options.vnicc.wanted_chars |= vnicc;
1861 } else {
1862 cmd = IPA_VNICC_DISABLE;
1863 card->options.vnicc.wanted_chars &= ~vnicc;
1864 }
1865
1866 /* do we need to do anything? */
1867 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
1868 return rc;
1869
1870 /* if card is not ready, simply stop here */
1871 if (!qeth_card_hw_is_reachable(card)) {
1872 if (state)
1873 card->options.vnicc.cur_chars |= vnicc;
1874 else
1875 card->options.vnicc.cur_chars &= ~vnicc;
1876 return rc;
1877 }
1878
1879 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
1880 if (rc)
1881 card->options.vnicc.wanted_chars =
1882 card->options.vnicc.cur_chars;
1883 else {
1884 /* successful online VNICC change; handle special cases */
1885 if (state && vnicc == QETH_VNICC_RX_BCAST)
1886 card->options.vnicc.rx_bcast_enabled = true;
1887 if (!state && vnicc == QETH_VNICC_LEARNING)
1888 qeth_l2_vnicc_recover_timeout(card, vnicc,
1889 &card->options.vnicc.learning_timeout);
1890 }
1891
1892 return rc;
1893}
1894
1895/* get current VNICC flag state; called from sysfs show function */
1896int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
1897{
1898 int rc = 0;
1899
1900 QETH_CARD_TEXT(card, 2, "vniccgch");
1901
1902 /* do not get anything if BridgePort is enabled */
1903 if (qeth_bridgeport_is_in_use(card))
1904 return -EBUSY;
1905
1906 /* check if characteristic is supported */
1907 if (!(card->options.vnicc.sup_chars & vnicc))
1908 return -EOPNOTSUPP;
1909
1910 /* if card is ready, query current VNICC state */
1911 if (qeth_card_hw_is_reachable(card))
1912 rc = qeth_l2_vnicc_query_chars(card);
1913
1914 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
1915 return rc;
1916}
1917
1918/* set VNICC timeout; called from sysfs store function. Currently, only learning
1919 * supports timeout
1920 */
1921int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
1922{
1923 int rc = 0;
1924
1925 QETH_CARD_TEXT(card, 2, "vniccsto");
1926
1927 /* do not change anything if BridgePort is enabled */
1928 if (qeth_bridgeport_is_in_use(card))
1929 return -EBUSY;
1930
1931 /* check if characteristic and set_timeout are supported */
1932 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
1933 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
1934 return -EOPNOTSUPP;
1935
1936 /* do we need to do anything? */
1937 if (card->options.vnicc.learning_timeout == timeout)
1938 return rc;
1939
1940 /* if card is not ready, simply store the value internally and return */
1941 if (!qeth_card_hw_is_reachable(card)) {
1942 card->options.vnicc.learning_timeout = timeout;
1943 return rc;
1944 }
1945
1946 /* send timeout value to card; if successful, store value internally */
1947 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
1948 IPA_VNICC_SET_TIMEOUT, &timeout);
1949 if (!rc)
1950 card->options.vnicc.learning_timeout = timeout;
1951
1952 return rc;
1953}
1954
1955/* get current VNICC timeout; called from sysfs show function. Currently, only
1956 * learning supports timeout
1957 */
1958int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
1959{
1960 int rc = 0;
1961
1962 QETH_CARD_TEXT(card, 2, "vniccgto");
1963
1964 /* do not get anything if BridgePort is enabled */
1965 if (qeth_bridgeport_is_in_use(card))
1966 return -EBUSY;
1967
1968 /* check if characteristic and get_timeout are supported */
1969 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
1970 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
1971 return -EOPNOTSUPP;
1972 /* if card is ready, get timeout. Otherwise, just return stored value */
1973 *timeout = card->options.vnicc.learning_timeout;
1974 if (qeth_card_hw_is_reachable(card))
1975 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
1976 IPA_VNICC_GET_TIMEOUT,
1977 timeout);
1978
1979 return rc;
1980}
1981
1982/* check if VNICC is currently enabled */
1983bool qeth_l2_vnicc_is_in_use(struct qeth_card *card)
1984{
1985 /* if everything is turned off, VNICC is not active */
1986 if (!card->options.vnicc.cur_chars)
1987 return false;
1988 /* default values are only OK if rx_bcast was not enabled by user
1989 * or the card is offline.
1990 */
1991 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
1992 if (!card->options.vnicc.rx_bcast_enabled ||
1993 !qeth_card_hw_is_reachable(card))
1994 return false;
1995 }
1996 return true;
1997}
1998
1999/* recover user timeout setting */
2000static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
2001 u32 *timeout)
2002{
2003 if (card->options.vnicc.sup_chars & vnicc &&
2004 card->options.vnicc.getset_timeout_sup & vnicc &&
2005 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
2006 timeout))
2007 return false;
2008 *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2009 return true;
2010}
2011
2012/* recover user characteristic setting */
2013static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2014 bool enable)
2015{
2016 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2017
2018 if (card->options.vnicc.sup_chars & vnicc &&
2019 card->options.vnicc.set_char_sup & vnicc &&
2020 !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2021 return false;
2022 card->options.vnicc.wanted_chars &= ~vnicc;
2023 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2024 return true;
2025}
2026
2027/* (re-)initialize VNICC */
2028static void qeth_l2_vnicc_init(struct qeth_card *card)
2029{
2030 u32 *timeout = &card->options.vnicc.learning_timeout;
2031 bool enable, error = false;
2032 unsigned int chars_len, i;
2033 unsigned long chars_tmp;
2034 u32 sup_cmds, vnicc;
2035
2036 QETH_CARD_TEXT(card, 2, "vniccini");
2037 /* reset rx_bcast */
2038 card->options.vnicc.rx_bcast_enabled = 0;
2039 /* initial query and storage of VNIC characteristics */
2040 if (qeth_l2_vnicc_query_chars(card)) {
2041 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2042 *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
2043 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2044 /* fail quietly if user didn't change the default config */
2045 card->options.vnicc.sup_chars = 0;
2046 card->options.vnicc.cur_chars = 0;
2047 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2048 return;
2049 }
2050 /* get supported commands for each supported characteristic */
2051 chars_tmp = card->options.vnicc.sup_chars;
2052 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2053 for_each_set_bit(i, &chars_tmp, chars_len) {
2054 vnicc = BIT(i);
2055 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) {
2056 sup_cmds = 0;
2057 error = true;
2058 }
2059 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) &&
2060 (sup_cmds & IPA_VNICC_GET_TIMEOUT))
2061 card->options.vnicc.getset_timeout_sup |= vnicc;
2062 else
2063 card->options.vnicc.getset_timeout_sup &= ~vnicc;
2064 if ((sup_cmds & IPA_VNICC_ENABLE) &&
2065 (sup_cmds & IPA_VNICC_DISABLE))
2066 card->options.vnicc.set_char_sup |= vnicc;
2067 else
2068 card->options.vnicc.set_char_sup &= ~vnicc;
2069 }
2070 /* enforce assumed default values and recover settings, if changed */
2071 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2072 timeout);
2073 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT;
2074 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE;
2075 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2076 for_each_set_bit(i, &chars_tmp, chars_len) {
2077 vnicc = BIT(i);
2078 enable = card->options.vnicc.wanted_chars & vnicc;
2079 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2080 }
2081 if (error)
2082 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2083}
2084
2085/* configure default values of VNIC characteristics */
2086static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2087{
2088 /* characteristics values */
2089 card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2090 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
2091 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2092 /* supported commands */
2093 card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
2094 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
2095 /* settings wanted by users */
2096 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2097}
2098
2099module_init(qeth_l2_init);
2100module_exit(qeth_l2_exit);
2101MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2102MODULE_DESCRIPTION("qeth layer 2 discipline");
2103MODULE_LICENSE("GPL");