?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / s390 / net / qeth_l2_main.c
blob830d63524d612ff8bc665f918d6b01400e5c0c88
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_CARD_TEXT_(card, 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_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
148 static 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
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_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
171 static 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
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_CARD_TEXT(card, 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_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
272 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
273 }
274 return 0;
275 }
276
277 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
278 enum qeth_ipa_cmds ipacmd)
279 {
280 struct qeth_ipa_cmd *cmd;
281 struct qeth_cmd_buffer *iob;
282
283 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
284 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
285 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
286 cmd->data.setdelvlan.vlan_id = i;
287 return qeth_send_ipa_cmd(card, iob,
288 qeth_l2_send_setdelvlan_cb, NULL);
289 }
290
291 static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
292 {
293 struct qeth_vlan_vid *id;
294 QETH_CARD_TEXT(card, 3, "L2prcvln");
295 spin_lock_bh(&card->vlanlock);
296 list_for_each_entry(id, &card->vid_list, list) {
297 if (clear)
298 qeth_l2_send_setdelvlan(card, id->vid,
299 IPA_CMD_DELVLAN);
300 else
301 qeth_l2_send_setdelvlan(card, id->vid,
302 IPA_CMD_SETVLAN);
303 }
304 spin_unlock_bh(&card->vlanlock);
305 }
306
307 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
308 {
309 struct qeth_card *card = dev->ml_priv;
310 struct qeth_vlan_vid *id;
311
312 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
313 if (card->info.type == QETH_CARD_TYPE_OSM) {
314 QETH_CARD_TEXT(card, 3, "aidOSM");
315 return;
316 }
317 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
318 QETH_CARD_TEXT(card, 3, "aidREC");
319 return;
320 }
321 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
322 if (id) {
323 id->vid = vid;
324 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
325 spin_lock_bh(&card->vlanlock);
326 list_add_tail(&id->list, &card->vid_list);
327 spin_unlock_bh(&card->vlanlock);
328 }
329 }
330
331 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
332 {
333 struct qeth_vlan_vid *id, *tmpid = NULL;
334 struct qeth_card *card = dev->ml_priv;
335
336 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
337 if (card->info.type == QETH_CARD_TYPE_OSM) {
338 QETH_CARD_TEXT(card, 3, "kidOSM");
339 return;
340 }
341 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
342 QETH_CARD_TEXT(card, 3, "kidREC");
343 return;
344 }
345 spin_lock_bh(&card->vlanlock);
346 list_for_each_entry(id, &card->vid_list, list) {
347 if (id->vid == vid) {
348 list_del(&id->list);
349 tmpid = id;
350 break;
351 }
352 }
353 spin_unlock_bh(&card->vlanlock);
354 if (tmpid) {
355 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
356 kfree(tmpid);
357 }
358 qeth_l2_set_multicast_list(card->dev);
359 }
360
361 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
362 {
363 int rc = 0;
364
365 QETH_DBF_TEXT(SETUP , 2, "stopcard");
366 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
367
368 qeth_set_allowed_threads(card, 0, 1);
369 if (card->read.state == CH_STATE_UP &&
370 card->write.state == CH_STATE_UP &&
371 (card->state == CARD_STATE_UP)) {
372 if (recovery_mode &&
373 card->info.type != QETH_CARD_TYPE_OSN) {
374 qeth_l2_stop(card->dev);
375 } else {
376 rtnl_lock();
377 dev_close(card->dev);
378 rtnl_unlock();
379 }
380 if (!card->use_hard_stop ||
381 recovery_mode) {
382 __u8 *mac = &card->dev->dev_addr[0];
383 rc = qeth_l2_send_delmac(card, mac);
384 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
385 }
386 card->state = CARD_STATE_SOFTSETUP;
387 }
388 if (card->state == CARD_STATE_SOFTSETUP) {
389 qeth_l2_process_vlans(card, 1);
390 if (!card->use_hard_stop ||
391 recovery_mode)
392 qeth_l2_del_all_mc(card);
393 qeth_clear_ipacmd_list(card);
394 card->state = CARD_STATE_HARDSETUP;
395 }
396 if (card->state == CARD_STATE_HARDSETUP) {
397 qeth_qdio_clear_card(card, 0);
398 qeth_clear_qdio_buffers(card);
399 qeth_clear_working_pool_list(card);
400 card->state = CARD_STATE_DOWN;
401 }
402 if (card->state == CARD_STATE_DOWN) {
403 qeth_clear_cmd_buffers(&card->read);
404 qeth_clear_cmd_buffers(&card->write);
405 }
406 card->use_hard_stop = 0;
407 return rc;
408 }
409
410 static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
411 struct qeth_qdio_buffer *buf, int index)
412 {
413 struct qdio_buffer_element *element;
414 struct sk_buff *skb;
415 struct qeth_hdr *hdr;
416 int offset;
417 unsigned int len;
418
419 /* get first element of current buffer */
420 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
421 offset = 0;
422 if (card->options.performance_stats)
423 card->perf_stats.bufs_rec++;
424 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
425 &offset, &hdr))) {
426 skb->dev = card->dev;
427 /* is device UP ? */
428 if (!(card->dev->flags & IFF_UP)) {
429 dev_kfree_skb_any(skb);
430 continue;
431 }
432
433 switch (hdr->hdr.l2.id) {
434 case QETH_HEADER_TYPE_LAYER2:
435 skb->pkt_type = PACKET_HOST;
436 skb->protocol = eth_type_trans(skb, skb->dev);
437 if (card->options.checksum_type == NO_CHECKSUMMING)
438 skb->ip_summed = CHECKSUM_UNNECESSARY;
439 else
440 skb->ip_summed = CHECKSUM_NONE;
441 if (skb->protocol == htons(ETH_P_802_2))
442 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
443 len = skb->len;
444 netif_rx(skb);
445 break;
446 case QETH_HEADER_TYPE_OSN:
447 if (card->info.type == QETH_CARD_TYPE_OSN) {
448 skb_push(skb, sizeof(struct qeth_hdr));
449 skb_copy_to_linear_data(skb, hdr,
450 sizeof(struct qeth_hdr));
451 len = skb->len;
452 card->osn_info.data_cb(skb);
453 break;
454 }
455 /* else unknown */
456 default:
457 dev_kfree_skb_any(skb);
458 QETH_CARD_TEXT(card, 3, "inbunkno");
459 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
460 continue;
461 }
462 card->stats.rx_packets++;
463 card->stats.rx_bytes += len;
464 }
465 }
466
467 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
468 enum qeth_ipa_cmds ipacmd,
469 int (*reply_cb) (struct qeth_card *,
470 struct qeth_reply*,
471 unsigned long))
472 {
473 struct qeth_ipa_cmd *cmd;
474 struct qeth_cmd_buffer *iob;
475
476 QETH_CARD_TEXT(card, 2, "L2sdmac");
477 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
478 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
479 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
480 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
481 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
482 }
483
484 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
485 struct qeth_reply *reply,
486 unsigned long data)
487 {
488 struct qeth_ipa_cmd *cmd;
489
490 QETH_CARD_TEXT(card, 2, "L2Smaccb");
491 cmd = (struct qeth_ipa_cmd *) data;
492 if (cmd->hdr.return_code) {
493 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
494 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
495 switch (cmd->hdr.return_code) {
496 case IPA_RC_L2_DUP_MAC:
497 case IPA_RC_L2_DUP_LAYER3_MAC:
498 dev_warn(&card->gdev->dev,
499 "MAC address %pM already exists\n",
500 card->dev->dev_addr);
501 break;
502 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
503 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
504 dev_warn(&card->gdev->dev,
505 "MAC address %pM is not authorized\n",
506 card->dev->dev_addr);
507 break;
508 default:
509 break;
510 }
511 cmd->hdr.return_code = -EIO;
512 } else {
513 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
514 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
515 OSA_ADDR_LEN);
516 dev_info(&card->gdev->dev,
517 "MAC address %pM successfully registered on device %s\n",
518 card->dev->dev_addr, card->dev->name);
519 }
520 return 0;
521 }
522
523 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
524 {
525 QETH_CARD_TEXT(card, 2, "L2Setmac");
526 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
527 qeth_l2_send_setmac_cb);
528 }
529
530 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
531 struct qeth_reply *reply,
532 unsigned long data)
533 {
534 struct qeth_ipa_cmd *cmd;
535
536 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
537 cmd = (struct qeth_ipa_cmd *) data;
538 if (cmd->hdr.return_code) {
539 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
540 cmd->hdr.return_code = -EIO;
541 return 0;
542 }
543 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
544
545 return 0;
546 }
547
548 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
549 {
550 QETH_CARD_TEXT(card, 2, "L2Delmac");
551 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
552 return 0;
553 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
554 qeth_l2_send_delmac_cb);
555 }
556
557 static int qeth_l2_request_initial_mac(struct qeth_card *card)
558 {
559 int rc = 0;
560 char vendor_pre[] = {0x02, 0x00, 0x00};
561
562 QETH_DBF_TEXT(SETUP, 2, "doL2init");
563 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
564
565 rc = qeth_query_setadapterparms(card);
566 if (rc) {
567 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
568 "device %s: x%x\n", CARD_BUS_ID(card), rc);
569 }
570
571 if (card->info.type == QETH_CARD_TYPE_IQD ||
572 card->info.type == QETH_CARD_TYPE_OSM ||
573 card->info.type == QETH_CARD_TYPE_OSX ||
574 card->info.guestlan) {
575 rc = qeth_setadpparms_change_macaddr(card);
576 if (rc) {
577 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
578 "device %s: x%x\n", CARD_BUS_ID(card), rc);
579 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
580 return rc;
581 }
582 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
583 } else {
584 random_ether_addr(card->dev->dev_addr);
585 memcpy(card->dev->dev_addr, vendor_pre, 3);
586 }
587 return 0;
588 }
589
590 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
591 {
592 struct sockaddr *addr = p;
593 struct qeth_card *card = dev->ml_priv;
594 int rc = 0;
595
596 QETH_CARD_TEXT(card, 3, "setmac");
597
598 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
599 QETH_CARD_TEXT(card, 3, "setmcINV");
600 return -EOPNOTSUPP;
601 }
602
603 if (card->info.type == QETH_CARD_TYPE_OSN ||
604 card->info.type == QETH_CARD_TYPE_OSM ||
605 card->info.type == QETH_CARD_TYPE_OSX) {
606 QETH_CARD_TEXT(card, 3, "setmcTYP");
607 return -EOPNOTSUPP;
608 }
609 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
610 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
611 QETH_CARD_TEXT(card, 3, "setmcREC");
612 return -ERESTARTSYS;
613 }
614 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
615 if (!rc)
616 rc = qeth_l2_send_setmac(card, addr->sa_data);
617 return rc;
618 }
619
620 static void qeth_l2_set_multicast_list(struct net_device *dev)
621 {
622 struct qeth_card *card = dev->ml_priv;
623 struct netdev_hw_addr *ha;
624
625 if (card->info.type == QETH_CARD_TYPE_OSN)
626 return ;
627
628 QETH_CARD_TEXT(card, 3, "setmulti");
629 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
630 (card->state != CARD_STATE_UP))
631 return;
632 qeth_l2_del_all_mc(card);
633 spin_lock_bh(&card->mclock);
634 netdev_for_each_mc_addr(ha, dev)
635 qeth_l2_add_mc(card, ha->addr, 0);
636
637 netdev_for_each_uc_addr(ha, dev)
638 qeth_l2_add_mc(card, ha->addr, 1);
639
640 spin_unlock_bh(&card->mclock);
641 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
642 return;
643 qeth_setadp_promisc_mode(card);
644 }
645
646 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
647 {
648 int rc;
649 struct qeth_hdr *hdr = NULL;
650 int elements = 0;
651 struct qeth_card *card = dev->ml_priv;
652 struct sk_buff *new_skb = skb;
653 int ipv = qeth_get_ip_version(skb);
654 int cast_type = qeth_l2_get_cast_type(card, skb);
655 struct qeth_qdio_out_q *queue = card->qdio.out_qs
656 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
657 int tx_bytes = skb->len;
658 int data_offset = -1;
659 int elements_needed = 0;
660 int hd_len = 0;
661
662 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
663 card->stats.tx_carrier_errors++;
664 goto tx_drop;
665 }
666
667 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
668 (skb->protocol == htons(ETH_P_IPV6)))
669 goto tx_drop;
670
671 if (card->options.performance_stats) {
672 card->perf_stats.outbound_cnt++;
673 card->perf_stats.outbound_start_time = qeth_get_micros();
674 }
675 netif_stop_queue(dev);
676
677 if (card->info.type == QETH_CARD_TYPE_OSN)
678 hdr = (struct qeth_hdr *)skb->data;
679 else {
680 if (card->info.type == QETH_CARD_TYPE_IQD) {
681 new_skb = skb;
682 data_offset = ETH_HLEN;
683 hd_len = ETH_HLEN;
684 hdr = kmem_cache_alloc(qeth_core_header_cache,
685 GFP_ATOMIC);
686 if (!hdr)
687 goto tx_drop;
688 elements_needed++;
689 skb_reset_mac_header(new_skb);
690 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
691 hdr->hdr.l2.pkt_length = new_skb->len;
692 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
693 skb_mac_header(new_skb), ETH_HLEN);
694 } else {
695 /* create a clone with writeable headroom */
696 new_skb = skb_realloc_headroom(skb,
697 sizeof(struct qeth_hdr));
698 if (!new_skb)
699 goto tx_drop;
700 hdr = (struct qeth_hdr *)skb_push(new_skb,
701 sizeof(struct qeth_hdr));
702 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
703 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
704 }
705 }
706
707 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
708 elements_needed);
709 if (!elements) {
710 if (data_offset >= 0)
711 kmem_cache_free(qeth_core_header_cache, hdr);
712 goto tx_drop;
713 }
714
715 if (card->info.type != QETH_CARD_TYPE_IQD) {
716 if (qeth_hdr_chk_and_bounce(new_skb,
717 sizeof(struct qeth_hdr_layer2)))
718 goto tx_drop;
719 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
720 elements);
721 } else
722 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
723 elements, data_offset, hd_len);
724 if (!rc) {
725 card->stats.tx_packets++;
726 card->stats.tx_bytes += tx_bytes;
727 if (new_skb != skb)
728 dev_kfree_skb_any(skb);
729 rc = NETDEV_TX_OK;
730 } else {
731 if (data_offset >= 0)
732 kmem_cache_free(qeth_core_header_cache, hdr);
733
734 if (rc == -EBUSY) {
735 if (new_skb != skb)
736 dev_kfree_skb_any(new_skb);
737 return NETDEV_TX_BUSY;
738 } else
739 goto tx_drop;
740 }
741
742 netif_wake_queue(dev);
743 if (card->options.performance_stats)
744 card->perf_stats.outbound_time += qeth_get_micros() -
745 card->perf_stats.outbound_start_time;
746 return rc;
747
748 tx_drop:
749 card->stats.tx_dropped++;
750 card->stats.tx_errors++;
751 if ((new_skb != skb) && new_skb)
752 dev_kfree_skb_any(new_skb);
753 dev_kfree_skb_any(skb);
754 netif_wake_queue(dev);
755 return NETDEV_TX_OK;
756 }
757
758 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
759 unsigned int qdio_err, unsigned int queue,
760 int first_element, int count, unsigned long card_ptr)
761 {
762 struct net_device *net_dev;
763 struct qeth_card *card;
764 struct qeth_qdio_buffer *buffer;
765 int index;
766 int i;
767
768 card = (struct qeth_card *) card_ptr;
769 net_dev = card->dev;
770 if (card->options.performance_stats) {
771 card->perf_stats.inbound_cnt++;
772 card->perf_stats.inbound_start_time = qeth_get_micros();
773 }
774 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
775 QETH_CARD_TEXT(card, 1, "qdinchk");
776 QETH_CARD_TEXT_(card, 1, "%04X%04X", first_element,
777 count);
778 QETH_CARD_TEXT_(card, 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_CARD_TEXT(card, 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_CARD_TEXT(card, 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_CARD_TEXT(card, 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 return;
864 }
865
866 static const struct ethtool_ops qeth_l2_ethtool_ops = {
867 .get_link = ethtool_op_get_link,
868 .get_strings = qeth_core_get_strings,
869 .get_ethtool_stats = qeth_core_get_ethtool_stats,
870 .get_sset_count = qeth_core_get_sset_count,
871 .get_drvinfo = qeth_core_get_drvinfo,
872 .get_settings = qeth_core_ethtool_get_settings,
873 };
874
875 static const struct ethtool_ops qeth_l2_osn_ops = {
876 .get_strings = qeth_core_get_strings,
877 .get_ethtool_stats = qeth_core_get_ethtool_stats,
878 .get_sset_count = qeth_core_get_sset_count,
879 .get_drvinfo = qeth_core_get_drvinfo,
880 };
881
882 static const struct net_device_ops qeth_l2_netdev_ops = {
883 .ndo_open = qeth_l2_open,
884 .ndo_stop = qeth_l2_stop,
885 .ndo_get_stats = qeth_get_stats,
886 .ndo_start_xmit = qeth_l2_hard_start_xmit,
887 .ndo_validate_addr = eth_validate_addr,
888 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
889 .ndo_do_ioctl = qeth_l2_do_ioctl,
890 .ndo_set_mac_address = qeth_l2_set_mac_address,
891 .ndo_change_mtu = qeth_change_mtu,
892 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
893 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
894 .ndo_tx_timeout = qeth_tx_timeout,
895 };
896
897 static int qeth_l2_setup_netdev(struct qeth_card *card)
898 {
899 switch (card->info.type) {
900 case QETH_CARD_TYPE_IQD:
901 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
902 break;
903 case QETH_CARD_TYPE_OSN:
904 card->dev = alloc_netdev(0, "osn%d", ether_setup);
905 card->dev->flags |= IFF_NOARP;
906 break;
907 default:
908 card->dev = alloc_etherdev(0);
909 }
910
911 if (!card->dev)
912 return -ENODEV;
913
914 card->dev->ml_priv = card;
915 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
916 card->dev->mtu = card->info.initial_mtu;
917 card->dev->netdev_ops = &qeth_l2_netdev_ops;
918 if (card->info.type != QETH_CARD_TYPE_OSN)
919 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
920 else
921 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
922 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
923 card->info.broadcast_capable = 1;
924 qeth_l2_request_initial_mac(card);
925 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
926 return register_netdev(card->dev);
927 }
928
929 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
930 {
931 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
932 int rc = 0;
933 enum qeth_card_states recover_flag;
934
935 BUG_ON(!card);
936 mutex_lock(&card->discipline_mutex);
937 mutex_lock(&card->conf_mutex);
938 QETH_DBF_TEXT(SETUP, 2, "setonlin");
939 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
940
941 recover_flag = card->state;
942 rc = qeth_core_hardsetup_card(card);
943 if (rc) {
944 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
945 rc = -ENODEV;
946 goto out_remove;
947 }
948
949 if (!card->dev && qeth_l2_setup_netdev(card)) {
950 rc = -ENODEV;
951 goto out_remove;
952 }
953
954 if (card->info.type != QETH_CARD_TYPE_OSN)
955 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
956
957 card->state = CARD_STATE_HARDSETUP;
958 qeth_print_status_message(card);
959
960 /* softsetup */
961 QETH_DBF_TEXT(SETUP, 2, "softsetp");
962
963 rc = qeth_send_startlan(card);
964 if (rc) {
965 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
966 if (rc == 0xe080) {
967 dev_warn(&card->gdev->dev,
968 "The LAN is offline\n");
969 card->lan_online = 0;
970 goto out;
971 }
972 rc = -ENODEV;
973 goto out_remove;
974 } else
975 card->lan_online = 1;
976
977 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
978 (card->info.type == QETH_CARD_TYPE_OSX))
979 /* configure isolation level */
980 qeth_set_access_ctrl_online(card);
981
982 if (card->info.type != QETH_CARD_TYPE_OSN &&
983 card->info.type != QETH_CARD_TYPE_OSM)
984 qeth_l2_process_vlans(card, 0);
985
986 netif_tx_disable(card->dev);
987
988 rc = qeth_init_qdio_queues(card);
989 if (rc) {
990 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
991 rc = -ENODEV;
992 goto out_remove;
993 }
994 card->state = CARD_STATE_SOFTSETUP;
995 netif_carrier_on(card->dev);
996
997 qeth_set_allowed_threads(card, 0xffffffff, 0);
998 if (recover_flag == CARD_STATE_RECOVER) {
999 if (recovery_mode &&
1000 card->info.type != QETH_CARD_TYPE_OSN) {
1001 qeth_l2_open(card->dev);
1002 } else {
1003 rtnl_lock();
1004 dev_open(card->dev);
1005 rtnl_unlock();
1006 }
1007 /* this also sets saved unicast addresses */
1008 qeth_l2_set_multicast_list(card->dev);
1009 }
1010 /* let user_space know that device is online */
1011 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1012 out:
1013 mutex_unlock(&card->conf_mutex);
1014 mutex_unlock(&card->discipline_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 mutex_unlock(&card->discipline_mutex);
1029 return rc;
1030 }
1031
1032 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1033 {
1034 return __qeth_l2_set_online(gdev, 0);
1035 }
1036
1037 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1038 int recovery_mode)
1039 {
1040 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1041 int rc = 0, rc2 = 0, rc3 = 0;
1042 enum qeth_card_states recover_flag;
1043
1044 mutex_lock(&card->discipline_mutex);
1045 mutex_lock(&card->conf_mutex);
1046 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1047 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1048
1049 if (card->dev && netif_carrier_ok(card->dev))
1050 netif_carrier_off(card->dev);
1051 recover_flag = card->state;
1052 qeth_l2_stop_card(card, recovery_mode);
1053 rc = ccw_device_set_offline(CARD_DDEV(card));
1054 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1055 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1056 if (!rc)
1057 rc = (rc2) ? rc2 : rc3;
1058 if (rc)
1059 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1060 if (recover_flag == CARD_STATE_UP)
1061 card->state = CARD_STATE_RECOVER;
1062 /* let user_space know that device is offline */
1063 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1064 mutex_unlock(&card->conf_mutex);
1065 mutex_unlock(&card->discipline_mutex);
1066 return 0;
1067 }
1068
1069 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1070 {
1071 return __qeth_l2_set_offline(cgdev, 0);
1072 }
1073
1074 static int qeth_l2_recover(void *ptr)
1075 {
1076 struct qeth_card *card;
1077 int rc = 0;
1078
1079 card = (struct qeth_card *) ptr;
1080 QETH_CARD_TEXT(card, 2, "recover1");
1081 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1082 return 0;
1083 QETH_CARD_TEXT(card, 2, "recover2");
1084 dev_warn(&card->gdev->dev,
1085 "A recovery process has been started for the device\n");
1086 card->use_hard_stop = 1;
1087 __qeth_l2_set_offline(card->gdev, 1);
1088 rc = __qeth_l2_set_online(card->gdev, 1);
1089 /* don't run another scheduled recovery */
1090 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1091 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1092 if (!rc)
1093 dev_info(&card->gdev->dev,
1094 "Device successfully recovered!\n");
1095 else {
1096 rtnl_lock();
1097 dev_close(card->dev);
1098 rtnl_unlock();
1099 dev_warn(&card->gdev->dev, "The qeth device driver "
1100 "failed to recover an error on the device\n");
1101 }
1102 return 0;
1103 }
1104
1105 static int __init qeth_l2_init(void)
1106 {
1107 pr_info("register layer 2 discipline\n");
1108 return 0;
1109 }
1110
1111 static void __exit qeth_l2_exit(void)
1112 {
1113 pr_info("unregister layer 2 discipline\n");
1114 }
1115
1116 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1117 {
1118 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1119 qeth_qdio_clear_card(card, 0);
1120 qeth_clear_qdio_buffers(card);
1121 }
1122
1123 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1124 {
1125 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1126
1127 if (card->dev)
1128 netif_device_detach(card->dev);
1129 qeth_set_allowed_threads(card, 0, 1);
1130 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1131 if (gdev->state == CCWGROUP_OFFLINE)
1132 return 0;
1133 if (card->state == CARD_STATE_UP) {
1134 card->use_hard_stop = 1;
1135 __qeth_l2_set_offline(card->gdev, 1);
1136 } else
1137 __qeth_l2_set_offline(card->gdev, 0);
1138 return 0;
1139 }
1140
1141 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1142 {
1143 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1144 int rc = 0;
1145
1146 if (gdev->state == CCWGROUP_OFFLINE)
1147 goto out;
1148
1149 if (card->state == CARD_STATE_RECOVER) {
1150 rc = __qeth_l2_set_online(card->gdev, 1);
1151 if (rc) {
1152 rtnl_lock();
1153 dev_close(card->dev);
1154 rtnl_unlock();
1155 }
1156 } else
1157 rc = __qeth_l2_set_online(card->gdev, 0);
1158 out:
1159 qeth_set_allowed_threads(card, 0xffffffff, 0);
1160 if (card->dev)
1161 netif_device_attach(card->dev);
1162 if (rc)
1163 dev_warn(&card->gdev->dev, "The qeth device driver "
1164 "failed to recover an error on the device\n");
1165 return rc;
1166 }
1167
1168 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1169 .probe = qeth_l2_probe_device,
1170 .remove = qeth_l2_remove_device,
1171 .set_online = qeth_l2_set_online,
1172 .set_offline = qeth_l2_set_offline,
1173 .shutdown = qeth_l2_shutdown,
1174 .freeze = qeth_l2_pm_suspend,
1175 .thaw = qeth_l2_pm_resume,
1176 .restore = qeth_l2_pm_resume,
1177 };
1178 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1179
1180 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1181 struct qeth_cmd_buffer *iob)
1182 {
1183 unsigned long flags;
1184 int rc = 0;
1185
1186 QETH_CARD_TEXT(card, 5, "osndctrd");
1187
1188 wait_event(card->wait_q,
1189 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1190 qeth_prepare_control_data(card, len, iob);
1191 QETH_CARD_TEXT(card, 6, "osnoirqp");
1192 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1193 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1194 (addr_t) iob, 0, 0);
1195 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1196 if (rc) {
1197 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1198 "ccw_device_start rc = %i\n", rc);
1199 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1200 qeth_release_buffer(iob->channel, iob);
1201 atomic_set(&card->write.irq_pending, 0);
1202 wake_up(&card->wait_q);
1203 }
1204 return rc;
1205 }
1206
1207 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1208 struct qeth_cmd_buffer *iob, int data_len)
1209 {
1210 u16 s1, s2;
1211
1212 QETH_CARD_TEXT(card, 4, "osndipa");
1213
1214 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1215 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1216 s2 = (u16)data_len;
1217 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1218 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1219 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1220 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1221 return qeth_osn_send_control_data(card, s1, iob);
1222 }
1223
1224 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1225 {
1226 struct qeth_cmd_buffer *iob;
1227 struct qeth_card *card;
1228 int rc;
1229
1230 if (!dev)
1231 return -ENODEV;
1232 card = dev->ml_priv;
1233 if (!card)
1234 return -ENODEV;
1235 QETH_CARD_TEXT(card, 2, "osnsdmc");
1236 if ((card->state != CARD_STATE_UP) &&
1237 (card->state != CARD_STATE_SOFTSETUP))
1238 return -ENODEV;
1239 iob = qeth_wait_for_buffer(&card->write);
1240 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1241 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1242 return rc;
1243 }
1244 EXPORT_SYMBOL(qeth_osn_assist);
1245
1246 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1247 int (*assist_cb)(struct net_device *, void *),
1248 int (*data_cb)(struct sk_buff *))
1249 {
1250 struct qeth_card *card;
1251
1252 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1253 if (*dev == NULL)
1254 return -ENODEV;
1255 card = (*dev)->ml_priv;
1256 if (!card)
1257 return -ENODEV;
1258 QETH_CARD_TEXT(card, 2, "osnreg");
1259 if ((assist_cb == NULL) || (data_cb == NULL))
1260 return -EINVAL;
1261 card->osn_info.assist_cb = assist_cb;
1262 card->osn_info.data_cb = data_cb;
1263 return 0;
1264 }
1265 EXPORT_SYMBOL(qeth_osn_register);
1266
1267 void qeth_osn_deregister(struct net_device *dev)
1268 {
1269 struct qeth_card *card;
1270
1271 if (!dev)
1272 return;
1273 card = dev->ml_priv;
1274 if (!card)
1275 return;
1276 QETH_CARD_TEXT(card, 2, "osndereg");
1277 card->osn_info.assist_cb = NULL;
1278 card->osn_info.data_cb = NULL;
1279 return;
1280 }
1281 EXPORT_SYMBOL(qeth_osn_deregister);
1282
1283 module_init(qeth_l2_init);
1284 module_exit(qeth_l2_exit);
1285 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1286 MODULE_DESCRIPTION("qeth layer 2 discipline");
1287 MODULE_LICENSE("GPL");
Tomato firmware and modifications.