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Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
[linux/fpc-iii.git] / drivers / s390 / net / qeth_l2_main.c
blobd43f57a4ac6614b2d8924b9381a4ab77d814390f
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
27 static int qeth_l2_set_offline(struct ccwgroup_device *);
28 static int qeth_l2_stop(struct net_device *);
29 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
30 static 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));
35 static void qeth_l2_set_multicast_list(struct net_device *);
36 static int qeth_l2_recover(void *);
37
38 static 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_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
83 return rc;
84 }
85
86 static 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
104 static 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
126 static 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_DBF_TEXT(TRACE, 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
148 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
149 {
150 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
151 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
152 qeth_l2_send_setgroupmac_cb);
153 }
154
155 static 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_DBF_TEXT(TRACE, 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
171 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
172 {
173 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
174 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
175 qeth_l2_send_delgroupmac_cb);
176 }
177
178 static 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
205 static void qeth_l2_del_all_mc(struct qeth_card *card)
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 (mc->is_vmac)
212 qeth_l2_send_setdelmac(card, mc->mc_addr,
213 IPA_CMD_DELVMAC, NULL);
214 else
215 qeth_l2_send_delgroupmac(card, mc->mc_addr);
216 list_del(&mc->list);
217 kfree(mc);
218 }
219 spin_unlock_bh(&card->mclock);
220 }
221
222 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
223 struct sk_buff *skb)
224 {
225 if (card->info.type == QETH_CARD_TYPE_OSN)
226 return RTN_UNSPEC;
227 if (is_broadcast_ether_addr(skb->data))
228 return RTN_BROADCAST;
229 if (is_multicast_ether_addr(skb->data))
230 return RTN_MULTICAST;
231 return RTN_UNSPEC;
232 }
233
234 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
235 struct sk_buff *skb, int ipv, int cast_type)
236 {
237 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
238
239 memset(hdr, 0, sizeof(struct qeth_hdr));
240 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
241
242 /* set byte byte 3 to casting flags */
243 if (cast_type == RTN_MULTICAST)
244 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
245 else if (cast_type == RTN_BROADCAST)
246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
247 else
248 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
249
250 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
251 /* VSWITCH relies on the VLAN
252 * information to be present in
253 * the QDIO header */
254 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
255 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
256 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
257 }
258 }
259
260 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
261 struct qeth_reply *reply, unsigned long data)
262 {
263 struct qeth_ipa_cmd *cmd;
264
265 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
266 cmd = (struct qeth_ipa_cmd *) data;
267 if (cmd->hdr.return_code) {
268 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
269 "Continuing\n", cmd->data.setdelvlan.vlan_id,
270 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
271 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
272 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
273 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
274 }
275 return 0;
276 }
277
278 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
279 enum qeth_ipa_cmds ipacmd)
280 {
281 struct qeth_ipa_cmd *cmd;
282 struct qeth_cmd_buffer *iob;
283
284 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
285 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
286 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
287 cmd->data.setdelvlan.vlan_id = i;
288 return qeth_send_ipa_cmd(card, iob,
289 qeth_l2_send_setdelvlan_cb, NULL);
290 }
291
292 static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
293 {
294 struct qeth_vlan_vid *id;
295 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
296 spin_lock_bh(&card->vlanlock);
297 list_for_each_entry(id, &card->vid_list, list) {
298 if (clear)
299 qeth_l2_send_setdelvlan(card, id->vid,
300 IPA_CMD_DELVLAN);
301 else
302 qeth_l2_send_setdelvlan(card, id->vid,
303 IPA_CMD_SETVLAN);
304 }
305 spin_unlock_bh(&card->vlanlock);
306 }
307
308 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
309 {
310 struct qeth_card *card = dev->ml_priv;
311 struct qeth_vlan_vid *id;
312
313 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
314 if (card->info.type == QETH_CARD_TYPE_OSM) {
315 QETH_DBF_TEXT(TRACE, 3, "aidOSM");
316 return;
317 }
318 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
319 QETH_DBF_TEXT(TRACE, 3, "aidREC");
320 return;
321 }
322 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
323 if (id) {
324 id->vid = vid;
325 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
326 spin_lock_bh(&card->vlanlock);
327 list_add_tail(&id->list, &card->vid_list);
328 spin_unlock_bh(&card->vlanlock);
329 }
330 }
331
332 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
333 {
334 struct qeth_vlan_vid *id, *tmpid = NULL;
335 struct qeth_card *card = dev->ml_priv;
336
337 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
338 if (card->info.type == QETH_CARD_TYPE_OSM) {
339 QETH_DBF_TEXT(TRACE, 3, "kidOSM");
340 return;
341 }
342 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
343 QETH_DBF_TEXT(TRACE, 3, "kidREC");
344 return;
345 }
346 spin_lock_bh(&card->vlanlock);
347 list_for_each_entry(id, &card->vid_list, list) {
348 if (id->vid == vid) {
349 list_del(&id->list);
350 tmpid = id;
351 break;
352 }
353 }
354 spin_unlock_bh(&card->vlanlock);
355 if (tmpid) {
356 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
357 kfree(tmpid);
358 }
359 qeth_l2_set_multicast_list(card->dev);
360 }
361
362 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
363 {
364 int rc = 0;
365
366 QETH_DBF_TEXT(SETUP , 2, "stopcard");
367 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
368
369 qeth_set_allowed_threads(card, 0, 1);
370 if (card->read.state == CH_STATE_UP &&
371 card->write.state == CH_STATE_UP &&
372 (card->state == CARD_STATE_UP)) {
373 if (recovery_mode &&
374 card->info.type != QETH_CARD_TYPE_OSN) {
375 qeth_l2_stop(card->dev);
376 } else {
377 rtnl_lock();
378 dev_close(card->dev);
379 rtnl_unlock();
380 }
381 if (!card->use_hard_stop ||
382 recovery_mode) {
383 __u8 *mac = &card->dev->dev_addr[0];
384 rc = qeth_l2_send_delmac(card, mac);
385 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
386 }
387 card->state = CARD_STATE_SOFTSETUP;
388 }
389 if (card->state == CARD_STATE_SOFTSETUP) {
390 qeth_l2_process_vlans(card, 1);
391 if (!card->use_hard_stop ||
392 recovery_mode)
393 qeth_l2_del_all_mc(card);
394 qeth_clear_ipacmd_list(card);
395 card->state = CARD_STATE_HARDSETUP;
396 }
397 if (card->state == CARD_STATE_HARDSETUP) {
398 qeth_qdio_clear_card(card, 0);
399 qeth_clear_qdio_buffers(card);
400 qeth_clear_working_pool_list(card);
401 card->state = CARD_STATE_DOWN;
402 }
403 if (card->state == CARD_STATE_DOWN) {
404 qeth_clear_cmd_buffers(&card->read);
405 qeth_clear_cmd_buffers(&card->write);
406 }
407 card->use_hard_stop = 0;
408 return rc;
409 }
410
411 static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
412 struct qeth_qdio_buffer *buf, int index)
413 {
414 struct qdio_buffer_element *element;
415 struct sk_buff *skb;
416 struct qeth_hdr *hdr;
417 int offset;
418 unsigned int len;
419
420 /* get first element of current buffer */
421 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
422 offset = 0;
423 if (card->options.performance_stats)
424 card->perf_stats.bufs_rec++;
425 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
426 &offset, &hdr))) {
427 skb->dev = card->dev;
428 /* is device UP ? */
429 if (!(card->dev->flags & IFF_UP)) {
430 dev_kfree_skb_any(skb);
431 continue;
432 }
433
434 switch (hdr->hdr.l2.id) {
435 case QETH_HEADER_TYPE_LAYER2:
436 skb->pkt_type = PACKET_HOST;
437 skb->protocol = eth_type_trans(skb, skb->dev);
438 if (card->options.checksum_type == NO_CHECKSUMMING)
439 skb->ip_summed = CHECKSUM_UNNECESSARY;
440 else
441 skb->ip_summed = CHECKSUM_NONE;
442 if (skb->protocol == htons(ETH_P_802_2))
443 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
444 len = skb->len;
445 netif_rx(skb);
446 break;
447 case QETH_HEADER_TYPE_OSN:
448 if (card->info.type == QETH_CARD_TYPE_OSN) {
449 skb_push(skb, sizeof(struct qeth_hdr));
450 skb_copy_to_linear_data(skb, hdr,
451 sizeof(struct qeth_hdr));
452 len = skb->len;
453 card->osn_info.data_cb(skb);
454 break;
455 }
456 /* else unknown */
457 default:
458 dev_kfree_skb_any(skb);
459 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
460 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
461 continue;
462 }
463 card->stats.rx_packets++;
464 card->stats.rx_bytes += len;
465 }
466 }
467
468 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
469 enum qeth_ipa_cmds ipacmd,
470 int (*reply_cb) (struct qeth_card *,
471 struct qeth_reply*,
472 unsigned long))
473 {
474 struct qeth_ipa_cmd *cmd;
475 struct qeth_cmd_buffer *iob;
476
477 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
478 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
479 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
480 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
481 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
482 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
483 }
484
485 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
486 struct qeth_reply *reply,
487 unsigned long data)
488 {
489 struct qeth_ipa_cmd *cmd;
490
491 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
492 cmd = (struct qeth_ipa_cmd *) data;
493 if (cmd->hdr.return_code) {
494 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
495 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
496 switch (cmd->hdr.return_code) {
497 case IPA_RC_L2_DUP_MAC:
498 case IPA_RC_L2_DUP_LAYER3_MAC:
499 dev_warn(&card->gdev->dev,
500 "MAC address %pM already exists\n",
501 card->dev->dev_addr);
502 break;
503 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
504 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
505 dev_warn(&card->gdev->dev,
506 "MAC address %pM is not authorized\n",
507 card->dev->dev_addr);
508 break;
509 default:
510 break;
511 }
512 cmd->hdr.return_code = -EIO;
513 } else {
514 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
515 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
516 OSA_ADDR_LEN);
517 dev_info(&card->gdev->dev,
518 "MAC address %pM successfully registered on device %s\n",
519 card->dev->dev_addr, card->dev->name);
520 }
521 return 0;
522 }
523
524 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
525 {
526 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
527 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
528 qeth_l2_send_setmac_cb);
529 }
530
531 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
532 struct qeth_reply *reply,
533 unsigned long data)
534 {
535 struct qeth_ipa_cmd *cmd;
536
537 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
538 cmd = (struct qeth_ipa_cmd *) data;
539 if (cmd->hdr.return_code) {
540 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
541 cmd->hdr.return_code = -EIO;
542 return 0;
543 }
544 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
545
546 return 0;
547 }
548
549 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
550 {
551 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
552 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
553 return 0;
554 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
555 qeth_l2_send_delmac_cb);
556 }
557
558 static int qeth_l2_request_initial_mac(struct qeth_card *card)
559 {
560 int rc = 0;
561 char vendor_pre[] = {0x02, 0x00, 0x00};
562
563 QETH_DBF_TEXT(SETUP, 2, "doL2init");
564 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
565
566 rc = qeth_query_setadapterparms(card);
567 if (rc) {
568 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
569 "device %s: x%x\n", CARD_BUS_ID(card), rc);
570 }
571
572 if (card->info.type == QETH_CARD_TYPE_IQD ||
573 card->info.type == QETH_CARD_TYPE_OSM ||
574 card->info.type == QETH_CARD_TYPE_OSX ||
575 card->info.guestlan) {
576 rc = qeth_setadpparms_change_macaddr(card);
577 if (rc) {
578 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
579 "device %s: x%x\n", CARD_BUS_ID(card), rc);
580 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
581 return rc;
582 }
583 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
584 } else {
585 random_ether_addr(card->dev->dev_addr);
586 memcpy(card->dev->dev_addr, vendor_pre, 3);
587 }
588 return 0;
589 }
590
591 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
592 {
593 struct sockaddr *addr = p;
594 struct qeth_card *card = dev->ml_priv;
595 int rc = 0;
596
597 QETH_DBF_TEXT(TRACE, 3, "setmac");
598
599 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
600 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
601 return -EOPNOTSUPP;
602 }
603
604 if (card->info.type == QETH_CARD_TYPE_OSN ||
605 card->info.type == QETH_CARD_TYPE_OSM ||
606 card->info.type == QETH_CARD_TYPE_OSX) {
607 QETH_DBF_TEXT(TRACE, 3, "setmcTYP");
608 return -EOPNOTSUPP;
609 }
610 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
611 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
612 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
613 QETH_DBF_TEXT(TRACE, 3, "setmcREC");
614 return -ERESTARTSYS;
615 }
616 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
617 if (!rc)
618 rc = qeth_l2_send_setmac(card, addr->sa_data);
619 return rc;
620 }
621
622 static void qeth_l2_set_multicast_list(struct net_device *dev)
623 {
624 struct qeth_card *card = dev->ml_priv;
625 struct netdev_hw_addr *ha;
626
627 if (card->info.type == QETH_CARD_TYPE_OSN)
628 return ;
629
630 QETH_DBF_TEXT(TRACE, 3, "setmulti");
631 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
632 (card->state != CARD_STATE_UP))
633 return;
634 qeth_l2_del_all_mc(card);
635 spin_lock_bh(&card->mclock);
636 netdev_for_each_mc_addr(ha, dev)
637 qeth_l2_add_mc(card, ha->addr, 0);
638
639 netdev_for_each_uc_addr(ha, dev)
640 qeth_l2_add_mc(card, ha->addr, 1);
641
642 spin_unlock_bh(&card->mclock);
643 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
644 return;
645 qeth_setadp_promisc_mode(card);
646 }
647
648 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
649 {
650 int rc;
651 struct qeth_hdr *hdr = NULL;
652 int elements = 0;
653 struct qeth_card *card = dev->ml_priv;
654 struct sk_buff *new_skb = skb;
655 int ipv = qeth_get_ip_version(skb);
656 int cast_type = qeth_l2_get_cast_type(card, skb);
657 struct qeth_qdio_out_q *queue = card->qdio.out_qs
658 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
659 int tx_bytes = skb->len;
660 int data_offset = -1;
661 int elements_needed = 0;
662 int hd_len = 0;
663
664 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
665 card->stats.tx_carrier_errors++;
666 goto tx_drop;
667 }
668
669 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
670 (skb->protocol == htons(ETH_P_IPV6)))
671 goto tx_drop;
672
673 if (card->options.performance_stats) {
674 card->perf_stats.outbound_cnt++;
675 card->perf_stats.outbound_start_time = qeth_get_micros();
676 }
677 netif_stop_queue(dev);
678
679 if (card->info.type == QETH_CARD_TYPE_OSN)
680 hdr = (struct qeth_hdr *)skb->data;
681 else {
682 if (card->info.type == QETH_CARD_TYPE_IQD) {
683 new_skb = skb;
684 data_offset = ETH_HLEN;
685 hd_len = ETH_HLEN;
686 hdr = kmem_cache_alloc(qeth_core_header_cache,
687 GFP_ATOMIC);
688 if (!hdr)
689 goto tx_drop;
690 elements_needed++;
691 skb_reset_mac_header(new_skb);
692 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
693 hdr->hdr.l2.pkt_length = new_skb->len;
694 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
695 skb_mac_header(new_skb), ETH_HLEN);
696 } else {
697 /* create a clone with writeable headroom */
698 new_skb = skb_realloc_headroom(skb,
699 sizeof(struct qeth_hdr));
700 if (!new_skb)
701 goto tx_drop;
702 hdr = (struct qeth_hdr *)skb_push(new_skb,
703 sizeof(struct qeth_hdr));
704 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
705 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
706 }
707 }
708
709 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
710 elements_needed);
711 if (!elements) {
712 if (data_offset >= 0)
713 kmem_cache_free(qeth_core_header_cache, hdr);
714 goto tx_drop;
715 }
716
717 if (card->info.type != QETH_CARD_TYPE_IQD)
718 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
719 elements);
720 else
721 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
722 elements, data_offset, hd_len);
723 if (!rc) {
724 card->stats.tx_packets++;
725 card->stats.tx_bytes += tx_bytes;
726 if (new_skb != skb)
727 dev_kfree_skb_any(skb);
728 rc = NETDEV_TX_OK;
729 } else {
730 if (data_offset >= 0)
731 kmem_cache_free(qeth_core_header_cache, hdr);
732
733 if (rc == -EBUSY) {
734 if (new_skb != skb)
735 dev_kfree_skb_any(new_skb);
736 return NETDEV_TX_BUSY;
737 } else
738 goto tx_drop;
739 }
740
741 netif_wake_queue(dev);
742 if (card->options.performance_stats)
743 card->perf_stats.outbound_time += qeth_get_micros() -
744 card->perf_stats.outbound_start_time;
745 return rc;
746
747 tx_drop:
748 card->stats.tx_dropped++;
749 card->stats.tx_errors++;
750 if ((new_skb != skb) && new_skb)
751 dev_kfree_skb_any(new_skb);
752 dev_kfree_skb_any(skb);
753 netif_wake_queue(dev);
754 return NETDEV_TX_OK;
755 }
756
757 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
758 unsigned int qdio_err, unsigned int queue,
759 int first_element, int count, unsigned long card_ptr)
760 {
761 struct net_device *net_dev;
762 struct qeth_card *card;
763 struct qeth_qdio_buffer *buffer;
764 int index;
765 int i;
766
767 card = (struct qeth_card *) card_ptr;
768 net_dev = card->dev;
769 if (card->options.performance_stats) {
770 card->perf_stats.inbound_cnt++;
771 card->perf_stats.inbound_start_time = qeth_get_micros();
772 }
773 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
774 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
775 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
776 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
777 count);
778 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
779 qeth_schedule_recovery(card);
780 return;
781 }
782 for (i = first_element; i < (first_element + count); ++i) {
783 index = i % QDIO_MAX_BUFFERS_PER_Q;
784 buffer = &card->qdio.in_q->bufs[index];
785 if (!(qdio_err &&
786 qeth_check_qdio_errors(card, buffer->buffer, qdio_err,
787 "qinerr")))
788 qeth_l2_process_inbound_buffer(card, buffer, index);
789 /* clear buffer and give back to hardware */
790 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
791 qeth_queue_input_buffer(card, index);
792 }
793 if (card->options.performance_stats)
794 card->perf_stats.inbound_time += qeth_get_micros() -
795 card->perf_stats.inbound_start_time;
796 }
797
798 static int qeth_l2_open(struct net_device *dev)
799 {
800 struct qeth_card *card = dev->ml_priv;
801
802 QETH_DBF_TEXT(TRACE, 4, "qethopen");
803 if (card->state != CARD_STATE_SOFTSETUP)
804 return -ENODEV;
805
806 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
807 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
808 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
809 return -EPERM;
810 }
811 card->data.state = CH_STATE_UP;
812 card->state = CARD_STATE_UP;
813 netif_start_queue(dev);
814
815 if (!card->lan_online && netif_carrier_ok(dev))
816 netif_carrier_off(dev);
817 return 0;
818 }
819
820
821 static int qeth_l2_stop(struct net_device *dev)
822 {
823 struct qeth_card *card = dev->ml_priv;
824
825 QETH_DBF_TEXT(TRACE, 4, "qethstop");
826 netif_tx_disable(dev);
827 if (card->state == CARD_STATE_UP)
828 card->state = CARD_STATE_SOFTSETUP;
829 return 0;
830 }
831
832 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
833 {
834 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
835
836 INIT_LIST_HEAD(&card->vid_list);
837 INIT_LIST_HEAD(&card->mc_list);
838 card->options.layer2 = 1;
839 card->discipline.input_handler = (qdio_handler_t *)
840 qeth_l2_qdio_input_handler;
841 card->discipline.output_handler = (qdio_handler_t *)
842 qeth_qdio_output_handler;
843 card->discipline.recover = qeth_l2_recover;
844 return 0;
845 }
846
847 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
848 {
849 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
850
851 qeth_set_allowed_threads(card, 0, 1);
852 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
853
854 if (cgdev->state == CCWGROUP_ONLINE) {
855 card->use_hard_stop = 1;
856 qeth_l2_set_offline(cgdev);
857 }
858
859 if (card->dev) {
860 unregister_netdev(card->dev);
861 card->dev = NULL;
862 }
863
864 qeth_l2_del_all_mc(card);
865 return;
866 }
867
868 static const struct ethtool_ops qeth_l2_ethtool_ops = {
869 .get_link = ethtool_op_get_link,
870 .get_strings = qeth_core_get_strings,
871 .get_ethtool_stats = qeth_core_get_ethtool_stats,
872 .get_sset_count = qeth_core_get_sset_count,
873 .get_drvinfo = qeth_core_get_drvinfo,
874 .get_settings = qeth_core_ethtool_get_settings,
875 };
876
877 static const struct ethtool_ops qeth_l2_osn_ops = {
878 .get_strings = qeth_core_get_strings,
879 .get_ethtool_stats = qeth_core_get_ethtool_stats,
880 .get_sset_count = qeth_core_get_sset_count,
881 .get_drvinfo = qeth_core_get_drvinfo,
882 };
883
884 static const struct net_device_ops qeth_l2_netdev_ops = {
885 .ndo_open = qeth_l2_open,
886 .ndo_stop = qeth_l2_stop,
887 .ndo_get_stats = qeth_get_stats,
888 .ndo_start_xmit = qeth_l2_hard_start_xmit,
889 .ndo_validate_addr = eth_validate_addr,
890 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
891 .ndo_do_ioctl = qeth_l2_do_ioctl,
892 .ndo_set_mac_address = qeth_l2_set_mac_address,
893 .ndo_change_mtu = qeth_change_mtu,
894 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
895 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
896 .ndo_tx_timeout = qeth_tx_timeout,
897 };
898
899 static int qeth_l2_setup_netdev(struct qeth_card *card)
900 {
901 switch (card->info.type) {
902 case QETH_CARD_TYPE_IQD:
903 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
904 break;
905 case QETH_CARD_TYPE_OSN:
906 card->dev = alloc_netdev(0, "osn%d", ether_setup);
907 card->dev->flags |= IFF_NOARP;
908 break;
909 default:
910 card->dev = alloc_etherdev(0);
911 }
912
913 if (!card->dev)
914 return -ENODEV;
915
916 card->dev->ml_priv = card;
917 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
918 card->dev->mtu = card->info.initial_mtu;
919 card->dev->netdev_ops = &qeth_l2_netdev_ops;
920 if (card->info.type != QETH_CARD_TYPE_OSN)
921 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
922 else
923 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
924 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
925 card->info.broadcast_capable = 1;
926 qeth_l2_request_initial_mac(card);
927 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
928 return register_netdev(card->dev);
929 }
930
931 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
932 {
933 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
934 int rc = 0;
935 enum qeth_card_states recover_flag;
936
937 BUG_ON(!card);
938 mutex_lock(&card->conf_mutex);
939 QETH_DBF_TEXT(SETUP, 2, "setonlin");
940 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
941
942 recover_flag = card->state;
943 rc = qeth_core_hardsetup_card(card);
944 if (rc) {
945 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
946 rc = -ENODEV;
947 goto out_remove;
948 }
949
950 if (!card->dev && qeth_l2_setup_netdev(card)) {
951 rc = -ENODEV;
952 goto out_remove;
953 }
954
955 if (card->info.type != QETH_CARD_TYPE_OSN)
956 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
957
958 card->state = CARD_STATE_HARDSETUP;
959 qeth_print_status_message(card);
960
961 /* softsetup */
962 QETH_DBF_TEXT(SETUP, 2, "softsetp");
963
964 rc = qeth_send_startlan(card);
965 if (rc) {
966 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
967 if (rc == 0xe080) {
968 dev_warn(&card->gdev->dev,
969 "The LAN is offline\n");
970 card->lan_online = 0;
971 goto out;
972 }
973 rc = -ENODEV;
974 goto out_remove;
975 } else
976 card->lan_online = 1;
977
978 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
979 (card->info.type == QETH_CARD_TYPE_OSX))
980 /* configure isolation level */
981 qeth_set_access_ctrl_online(card);
982
983 if (card->info.type != QETH_CARD_TYPE_OSN &&
984 card->info.type != QETH_CARD_TYPE_OSM)
985 qeth_l2_process_vlans(card, 0);
986
987 netif_tx_disable(card->dev);
988
989 rc = qeth_init_qdio_queues(card);
990 if (rc) {
991 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
992 rc = -ENODEV;
993 goto out_remove;
994 }
995 card->state = CARD_STATE_SOFTSETUP;
996 netif_carrier_on(card->dev);
997
998 qeth_set_allowed_threads(card, 0xffffffff, 0);
999 if (recover_flag == CARD_STATE_RECOVER) {
1000 if (recovery_mode &&
1001 card->info.type != QETH_CARD_TYPE_OSN) {
1002 qeth_l2_open(card->dev);
1003 } else {
1004 rtnl_lock();
1005 dev_open(card->dev);
1006 rtnl_unlock();
1007 }
1008 /* this also sets saved unicast addresses */
1009 qeth_l2_set_multicast_list(card->dev);
1010 }
1011 /* let user_space know that device is online */
1012 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1013 out:
1014 mutex_unlock(&card->conf_mutex);
1015 return 0;
1016
1017 out_remove:
1018 card->use_hard_stop = 1;
1019 qeth_l2_stop_card(card, 0);
1020 ccw_device_set_offline(CARD_DDEV(card));
1021 ccw_device_set_offline(CARD_WDEV(card));
1022 ccw_device_set_offline(CARD_RDEV(card));
1023 if (recover_flag == CARD_STATE_RECOVER)
1024 card->state = CARD_STATE_RECOVER;
1025 else
1026 card->state = CARD_STATE_DOWN;
1027 mutex_unlock(&card->conf_mutex);
1028 return rc;
1029 }
1030
1031 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1032 {
1033 return __qeth_l2_set_online(gdev, 0);
1034 }
1035
1036 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1037 int recovery_mode)
1038 {
1039 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1040 int rc = 0, rc2 = 0, rc3 = 0;
1041 enum qeth_card_states recover_flag;
1042
1043 mutex_lock(&card->conf_mutex);
1044 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1045 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1046
1047 if (card->dev && netif_carrier_ok(card->dev))
1048 netif_carrier_off(card->dev);
1049 recover_flag = card->state;
1050 qeth_l2_stop_card(card, recovery_mode);
1051 rc = ccw_device_set_offline(CARD_DDEV(card));
1052 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1053 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1054 if (!rc)
1055 rc = (rc2) ? rc2 : rc3;
1056 if (rc)
1057 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1058 if (recover_flag == CARD_STATE_UP)
1059 card->state = CARD_STATE_RECOVER;
1060 /* let user_space know that device is offline */
1061 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1062 mutex_unlock(&card->conf_mutex);
1063 return 0;
1064 }
1065
1066 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1067 {
1068 return __qeth_l2_set_offline(cgdev, 0);
1069 }
1070
1071 static int qeth_l2_recover(void *ptr)
1072 {
1073 struct qeth_card *card;
1074 int rc = 0;
1075
1076 card = (struct qeth_card *) ptr;
1077 QETH_DBF_TEXT(TRACE, 2, "recover1");
1078 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
1079 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1080 return 0;
1081 QETH_DBF_TEXT(TRACE, 2, "recover2");
1082 dev_warn(&card->gdev->dev,
1083 "A recovery process has been started for the device\n");
1084 card->use_hard_stop = 1;
1085 __qeth_l2_set_offline(card->gdev, 1);
1086 rc = __qeth_l2_set_online(card->gdev, 1);
1087 /* don't run another scheduled recovery */
1088 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1089 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1090 if (!rc)
1091 dev_info(&card->gdev->dev,
1092 "Device successfully recovered!\n");
1093 else {
1094 rtnl_lock();
1095 dev_close(card->dev);
1096 rtnl_unlock();
1097 dev_warn(&card->gdev->dev, "The qeth device driver "
1098 "failed to recover an error on the device\n");
1099 }
1100 return 0;
1101 }
1102
1103 static int __init qeth_l2_init(void)
1104 {
1105 pr_info("register layer 2 discipline\n");
1106 return 0;
1107 }
1108
1109 static void __exit qeth_l2_exit(void)
1110 {
1111 pr_info("unregister layer 2 discipline\n");
1112 }
1113
1114 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1115 {
1116 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1117 qeth_qdio_clear_card(card, 0);
1118 qeth_clear_qdio_buffers(card);
1119 }
1120
1121 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1122 {
1123 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1124
1125 if (card->dev)
1126 netif_device_detach(card->dev);
1127 qeth_set_allowed_threads(card, 0, 1);
1128 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1129 if (gdev->state == CCWGROUP_OFFLINE)
1130 return 0;
1131 if (card->state == CARD_STATE_UP) {
1132 card->use_hard_stop = 1;
1133 __qeth_l2_set_offline(card->gdev, 1);
1134 } else
1135 __qeth_l2_set_offline(card->gdev, 0);
1136 return 0;
1137 }
1138
1139 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1140 {
1141 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1142 int rc = 0;
1143
1144 if (gdev->state == CCWGROUP_OFFLINE)
1145 goto out;
1146
1147 if (card->state == CARD_STATE_RECOVER) {
1148 rc = __qeth_l2_set_online(card->gdev, 1);
1149 if (rc) {
1150 rtnl_lock();
1151 dev_close(card->dev);
1152 rtnl_unlock();
1153 }
1154 } else
1155 rc = __qeth_l2_set_online(card->gdev, 0);
1156 out:
1157 qeth_set_allowed_threads(card, 0xffffffff, 0);
1158 if (card->dev)
1159 netif_device_attach(card->dev);
1160 if (rc)
1161 dev_warn(&card->gdev->dev, "The qeth device driver "
1162 "failed to recover an error on the device\n");
1163 return rc;
1164 }
1165
1166 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1167 .probe = qeth_l2_probe_device,
1168 .remove = qeth_l2_remove_device,
1169 .set_online = qeth_l2_set_online,
1170 .set_offline = qeth_l2_set_offline,
1171 .shutdown = qeth_l2_shutdown,
1172 .freeze = qeth_l2_pm_suspend,
1173 .thaw = qeth_l2_pm_resume,
1174 .restore = qeth_l2_pm_resume,
1175 };
1176 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1177
1178 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1179 struct qeth_cmd_buffer *iob)
1180 {
1181 unsigned long flags;
1182 int rc = 0;
1183
1184 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
1185
1186 wait_event(card->wait_q,
1187 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1188 qeth_prepare_control_data(card, len, iob);
1189 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
1190 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1191 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1192 (addr_t) iob, 0, 0);
1193 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1194 if (rc) {
1195 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1196 "ccw_device_start rc = %i\n", rc);
1197 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1198 qeth_release_buffer(iob->channel, iob);
1199 atomic_set(&card->write.irq_pending, 0);
1200 wake_up(&card->wait_q);
1201 }
1202 return rc;
1203 }
1204
1205 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1206 struct qeth_cmd_buffer *iob, int data_len)
1207 {
1208 u16 s1, s2;
1209
1210 QETH_DBF_TEXT(TRACE, 4, "osndipa");
1211
1212 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1213 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1214 s2 = (u16)data_len;
1215 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1216 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1217 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1218 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1219 return qeth_osn_send_control_data(card, s1, iob);
1220 }
1221
1222 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1223 {
1224 struct qeth_cmd_buffer *iob;
1225 struct qeth_card *card;
1226 int rc;
1227
1228 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
1229 if (!dev)
1230 return -ENODEV;
1231 card = dev->ml_priv;
1232 if (!card)
1233 return -ENODEV;
1234 if ((card->state != CARD_STATE_UP) &&
1235 (card->state != CARD_STATE_SOFTSETUP))
1236 return -ENODEV;
1237 iob = qeth_wait_for_buffer(&card->write);
1238 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1239 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1240 return rc;
1241 }
1242 EXPORT_SYMBOL(qeth_osn_assist);
1243
1244 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1245 int (*assist_cb)(struct net_device *, void *),
1246 int (*data_cb)(struct sk_buff *))
1247 {
1248 struct qeth_card *card;
1249
1250 QETH_DBF_TEXT(TRACE, 2, "osnreg");
1251 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1252 if (*dev == NULL)
1253 return -ENODEV;
1254 card = (*dev)->ml_priv;
1255 if (!card)
1256 return -ENODEV;
1257 if ((assist_cb == NULL) || (data_cb == NULL))
1258 return -EINVAL;
1259 card->osn_info.assist_cb = assist_cb;
1260 card->osn_info.data_cb = data_cb;
1261 return 0;
1262 }
1263 EXPORT_SYMBOL(qeth_osn_register);
1264
1265 void qeth_osn_deregister(struct net_device *dev)
1266 {
1267 struct qeth_card *card;
1268
1269 QETH_DBF_TEXT(TRACE, 2, "osndereg");
1270 if (!dev)
1271 return;
1272 card = dev->ml_priv;
1273 if (!card)
1274 return;
1275 card->osn_info.assist_cb = NULL;
1276 card->osn_info.data_cb = NULL;
1277 return;
1278 }
1279 EXPORT_SYMBOL(qeth_osn_deregister);
1280
1281 module_init(qeth_l2_init);
1282 module_exit(qeth_l2_exit);
1283 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1284 MODULE_DESCRIPTION("qeth layer 2 discipline");
1285 MODULE_LICENSE("GPL");
Linux with added FPC-III support