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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
[mirror_ubuntu-artful-kernel.git] / drivers / s390 / net / qeth_l2_main.c
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/etherdevice.h>
20 #include <linux/mii.h>
21 #include <linux/ip.h>
22 #include <linux/list.h>
23
24 #include "qeth_core.h"
25
26 static int qeth_l2_set_offline(struct ccwgroup_device *);
27 static int qeth_l2_stop(struct net_device *);
28 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
29 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
30 enum qeth_ipa_cmds,
31 int (*reply_cb) (struct qeth_card *,
32 struct qeth_reply*,
33 unsigned long));
34 static void qeth_l2_set_multicast_list(struct net_device *);
35 static int qeth_l2_recover(void *);
36
37 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
38 {
39 struct qeth_card *card = dev->ml_priv;
40 struct mii_ioctl_data *mii_data;
41 int rc = 0;
42
43 if (!card)
44 return -ENODEV;
45
46 if ((card->state != CARD_STATE_UP) &&
47 (card->state != CARD_STATE_SOFTSETUP))
48 return -ENODEV;
49
50 if (card->info.type == QETH_CARD_TYPE_OSN)
51 return -EPERM;
52
53 switch (cmd) {
54 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
55 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
56 break;
57 case SIOC_QETH_GET_CARD_TYPE:
58 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
59 !card->info.guestlan)
60 return 1;
61 return 0;
62 break;
63 case SIOCGMIIPHY:
64 mii_data = if_mii(rq);
65 mii_data->phy_id = 0;
66 break;
67 case SIOCGMIIREG:
68 mii_data = if_mii(rq);
69 if (mii_data->phy_id != 0)
70 rc = -EINVAL;
71 else
72 mii_data->val_out = qeth_mdio_read(dev,
73 mii_data->phy_id, mii_data->reg_num);
74 break;
75 default:
76 rc = -EOPNOTSUPP;
77 }
78 if (rc)
79 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
80 return rc;
81 }
82
83 static int qeth_l2_verify_dev(struct net_device *dev)
84 {
85 struct qeth_card *card;
86 unsigned long flags;
87 int rc = 0;
88
89 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
90 list_for_each_entry(card, &qeth_core_card_list.list, list) {
91 if (card->dev == dev) {
92 rc = QETH_REAL_CARD;
93 break;
94 }
95 }
96 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
97
98 return rc;
99 }
100
101 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
102 {
103 struct qeth_card *card;
104 struct net_device *ndev;
105 __u16 temp_dev_no;
106 unsigned long flags;
107 struct ccw_dev_id read_devid;
108
109 ndev = NULL;
110 memcpy(&temp_dev_no, read_dev_no, 2);
111 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
112 list_for_each_entry(card, &qeth_core_card_list.list, list) {
113 ccw_device_get_id(CARD_RDEV(card), &read_devid);
114 if (read_devid.devno == temp_dev_no) {
115 ndev = card->dev;
116 break;
117 }
118 }
119 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
120 return ndev;
121 }
122
123 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
124 struct qeth_reply *reply,
125 unsigned long data)
126 {
127 struct qeth_ipa_cmd *cmd;
128 __u8 *mac;
129
130 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
131 cmd = (struct qeth_ipa_cmd *) data;
132 mac = &cmd->data.setdelmac.mac[0];
133 /* MAC already registered, needed in couple/uncouple case */
134 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
135 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
136 mac, QETH_CARD_IFNAME(card));
137 cmd->hdr.return_code = 0;
138 }
139 if (cmd->hdr.return_code)
140 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
141 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
142 return 0;
143 }
144
145 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
146 {
147 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
148 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
149 qeth_l2_send_setgroupmac_cb);
150 }
151
152 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
153 struct qeth_reply *reply,
154 unsigned long data)
155 {
156 struct qeth_ipa_cmd *cmd;
157 __u8 *mac;
158
159 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
160 cmd = (struct qeth_ipa_cmd *) data;
161 mac = &cmd->data.setdelmac.mac[0];
162 if (cmd->hdr.return_code)
163 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
164 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
165 return 0;
166 }
167
168 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
169 {
170 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
171 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
172 qeth_l2_send_delgroupmac_cb);
173 }
174
175 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
176 {
177 struct qeth_mc_mac *mc;
178 int rc;
179
180 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
181
182 if (!mc)
183 return;
184
185 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
186 mc->mc_addrlen = OSA_ADDR_LEN;
187 mc->is_vmac = vmac;
188
189 if (vmac) {
190 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
191 NULL);
192 } else {
193 rc = qeth_l2_send_setgroupmac(card, mac);
194 }
195
196 if (!rc)
197 list_add_tail(&mc->list, &card->mc_list);
198 else
199 kfree(mc);
200 }
201
202 static void qeth_l2_del_all_mc(struct qeth_card *card)
203 {
204 struct qeth_mc_mac *mc, *tmp;
205
206 spin_lock_bh(&card->mclock);
207 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
208 if (mc->is_vmac)
209 qeth_l2_send_setdelmac(card, mc->mc_addr,
210 IPA_CMD_DELVMAC, NULL);
211 else
212 qeth_l2_send_delgroupmac(card, mc->mc_addr);
213 list_del(&mc->list);
214 kfree(mc);
215 }
216 spin_unlock_bh(&card->mclock);
217 }
218
219 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
220 struct sk_buff *skb)
221 {
222 if (card->info.type == QETH_CARD_TYPE_OSN)
223 return RTN_UNSPEC;
224 if (is_broadcast_ether_addr(skb->data))
225 return RTN_BROADCAST;
226 if (is_multicast_ether_addr(skb->data))
227 return RTN_MULTICAST;
228 return RTN_UNSPEC;
229 }
230
231 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
232 struct sk_buff *skb, int ipv, int cast_type)
233 {
234 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
235
236 memset(hdr, 0, sizeof(struct qeth_hdr));
237 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
238
239 /* set byte byte 3 to casting flags */
240 if (cast_type == RTN_MULTICAST)
241 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
242 else if (cast_type == RTN_BROADCAST)
243 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
244 else
245 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
246
247 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
248 /* VSWITCH relies on the VLAN
249 * information to be present in
250 * the QDIO header */
251 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
252 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
253 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
254 }
255 }
256
257 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
258 struct qeth_reply *reply, unsigned long data)
259 {
260 struct qeth_ipa_cmd *cmd;
261
262 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
263 cmd = (struct qeth_ipa_cmd *) data;
264 if (cmd->hdr.return_code) {
265 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
266 "Continuing\n", cmd->data.setdelvlan.vlan_id,
267 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
268 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
269 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
270 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
271 }
272 return 0;
273 }
274
275 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
276 enum qeth_ipa_cmds ipacmd)
277 {
278 struct qeth_ipa_cmd *cmd;
279 struct qeth_cmd_buffer *iob;
280
281 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
282 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
283 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
284 cmd->data.setdelvlan.vlan_id = i;
285 return qeth_send_ipa_cmd(card, iob,
286 qeth_l2_send_setdelvlan_cb, NULL);
287 }
288
289 static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
290 {
291 struct qeth_vlan_vid *id;
292 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
293 spin_lock_bh(&card->vlanlock);
294 list_for_each_entry(id, &card->vid_list, list) {
295 if (clear)
296 qeth_l2_send_setdelvlan(card, id->vid,
297 IPA_CMD_DELVLAN);
298 else
299 qeth_l2_send_setdelvlan(card, id->vid,
300 IPA_CMD_SETVLAN);
301 }
302 spin_unlock_bh(&card->vlanlock);
303 }
304
305 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
306 {
307 struct qeth_card *card = dev->ml_priv;
308 struct qeth_vlan_vid *id;
309
310 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
311 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
312 QETH_DBF_TEXT(TRACE, 3, "aidREC");
313 return;
314 }
315 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
316 if (id) {
317 id->vid = vid;
318 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
319 spin_lock_bh(&card->vlanlock);
320 list_add_tail(&id->list, &card->vid_list);
321 spin_unlock_bh(&card->vlanlock);
322 }
323 }
324
325 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
326 {
327 struct qeth_vlan_vid *id, *tmpid = NULL;
328 struct qeth_card *card = dev->ml_priv;
329
330 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
331 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
332 QETH_DBF_TEXT(TRACE, 3, "kidREC");
333 return;
334 }
335 spin_lock_bh(&card->vlanlock);
336 list_for_each_entry(id, &card->vid_list, list) {
337 if (id->vid == vid) {
338 list_del(&id->list);
339 tmpid = id;
340 break;
341 }
342 }
343 spin_unlock_bh(&card->vlanlock);
344 if (tmpid) {
345 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
346 kfree(tmpid);
347 }
348 qeth_l2_set_multicast_list(card->dev);
349 }
350
351 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
352 {
353 int rc = 0;
354
355 QETH_DBF_TEXT(SETUP , 2, "stopcard");
356 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
357
358 qeth_set_allowed_threads(card, 0, 1);
359 if (card->read.state == CH_STATE_UP &&
360 card->write.state == CH_STATE_UP &&
361 (card->state == CARD_STATE_UP)) {
362 if (recovery_mode &&
363 card->info.type != QETH_CARD_TYPE_OSN) {
364 qeth_l2_stop(card->dev);
365 } else {
366 rtnl_lock();
367 dev_close(card->dev);
368 rtnl_unlock();
369 }
370 if (!card->use_hard_stop ||
371 recovery_mode) {
372 __u8 *mac = &card->dev->dev_addr[0];
373 rc = qeth_l2_send_delmac(card, mac);
374 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
375 }
376 card->state = CARD_STATE_SOFTSETUP;
377 }
378 if (card->state == CARD_STATE_SOFTSETUP) {
379 qeth_l2_process_vlans(card, 1);
380 if (!card->use_hard_stop ||
381 recovery_mode)
382 qeth_l2_del_all_mc(card);
383 qeth_clear_ipacmd_list(card);
384 card->state = CARD_STATE_HARDSETUP;
385 }
386 if (card->state == CARD_STATE_HARDSETUP) {
387 qeth_qdio_clear_card(card, 0);
388 qeth_clear_qdio_buffers(card);
389 qeth_clear_working_pool_list(card);
390 card->state = CARD_STATE_DOWN;
391 }
392 if (card->state == CARD_STATE_DOWN) {
393 qeth_clear_cmd_buffers(&card->read);
394 qeth_clear_cmd_buffers(&card->write);
395 }
396 card->use_hard_stop = 0;
397 return rc;
398 }
399
400 static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
401 struct qeth_qdio_buffer *buf, int index)
402 {
403 struct qdio_buffer_element *element;
404 struct sk_buff *skb;
405 struct qeth_hdr *hdr;
406 int offset;
407 unsigned int len;
408
409 /* get first element of current buffer */
410 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
411 offset = 0;
412 if (card->options.performance_stats)
413 card->perf_stats.bufs_rec++;
414 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
415 &offset, &hdr))) {
416 skb->dev = card->dev;
417 /* is device UP ? */
418 if (!(card->dev->flags & IFF_UP)) {
419 dev_kfree_skb_any(skb);
420 continue;
421 }
422
423 switch (hdr->hdr.l2.id) {
424 case QETH_HEADER_TYPE_LAYER2:
425 skb->pkt_type = PACKET_HOST;
426 skb->protocol = eth_type_trans(skb, skb->dev);
427 if (card->options.checksum_type == NO_CHECKSUMMING)
428 skb->ip_summed = CHECKSUM_UNNECESSARY;
429 else
430 skb->ip_summed = CHECKSUM_NONE;
431 if (skb->protocol == htons(ETH_P_802_2))
432 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
433 len = skb->len;
434 netif_rx(skb);
435 break;
436 case QETH_HEADER_TYPE_OSN:
437 if (card->info.type == QETH_CARD_TYPE_OSN) {
438 skb_push(skb, sizeof(struct qeth_hdr));
439 skb_copy_to_linear_data(skb, hdr,
440 sizeof(struct qeth_hdr));
441 len = skb->len;
442 card->osn_info.data_cb(skb);
443 break;
444 }
445 /* else unknown */
446 default:
447 dev_kfree_skb_any(skb);
448 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
449 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
450 continue;
451 }
452 card->stats.rx_packets++;
453 card->stats.rx_bytes += len;
454 }
455 }
456
457 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
458 enum qeth_ipa_cmds ipacmd,
459 int (*reply_cb) (struct qeth_card *,
460 struct qeth_reply*,
461 unsigned long))
462 {
463 struct qeth_ipa_cmd *cmd;
464 struct qeth_cmd_buffer *iob;
465
466 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
467 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
468 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
469 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
470 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
471 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
472 }
473
474 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
475 struct qeth_reply *reply,
476 unsigned long data)
477 {
478 struct qeth_ipa_cmd *cmd;
479
480 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
481 cmd = (struct qeth_ipa_cmd *) data;
482 if (cmd->hdr.return_code) {
483 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
484 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
485 switch (cmd->hdr.return_code) {
486 case IPA_RC_L2_DUP_MAC:
487 case IPA_RC_L2_DUP_LAYER3_MAC:
488 dev_warn(&card->gdev->dev,
489 "MAC address %pM already exists\n",
490 card->dev->dev_addr);
491 break;
492 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
493 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
494 dev_warn(&card->gdev->dev,
495 "MAC address %pM is not authorized\n",
496 card->dev->dev_addr);
497 break;
498 default:
499 break;
500 }
501 cmd->hdr.return_code = -EIO;
502 } else {
503 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
504 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
505 OSA_ADDR_LEN);
506 dev_info(&card->gdev->dev,
507 "MAC address %pM successfully registered on device %s\n",
508 card->dev->dev_addr, card->dev->name);
509 }
510 return 0;
511 }
512
513 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
514 {
515 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
516 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
517 qeth_l2_send_setmac_cb);
518 }
519
520 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
521 struct qeth_reply *reply,
522 unsigned long data)
523 {
524 struct qeth_ipa_cmd *cmd;
525
526 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
527 cmd = (struct qeth_ipa_cmd *) data;
528 if (cmd->hdr.return_code) {
529 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
530 cmd->hdr.return_code = -EIO;
531 return 0;
532 }
533 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
534
535 return 0;
536 }
537
538 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
539 {
540 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
541 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
542 return 0;
543 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
544 qeth_l2_send_delmac_cb);
545 }
546
547 static int qeth_l2_request_initial_mac(struct qeth_card *card)
548 {
549 int rc = 0;
550 char vendor_pre[] = {0x02, 0x00, 0x00};
551
552 QETH_DBF_TEXT(SETUP, 2, "doL2init");
553 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
554
555 rc = qeth_query_setadapterparms(card);
556 if (rc) {
557 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
558 "device %s: x%x\n", CARD_BUS_ID(card), rc);
559 }
560
561 if ((card->info.type == QETH_CARD_TYPE_IQD) ||
562 (card->info.guestlan)) {
563 rc = qeth_setadpparms_change_macaddr(card);
564 if (rc) {
565 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
566 "device %s: x%x\n", CARD_BUS_ID(card), rc);
567 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
568 return rc;
569 }
570 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
571 } else {
572 random_ether_addr(card->dev->dev_addr);
573 memcpy(card->dev->dev_addr, vendor_pre, 3);
574 }
575 return 0;
576 }
577
578 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
579 {
580 struct sockaddr *addr = p;
581 struct qeth_card *card = dev->ml_priv;
582 int rc = 0;
583
584 QETH_DBF_TEXT(TRACE, 3, "setmac");
585
586 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
587 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
588 return -EOPNOTSUPP;
589 }
590
591 if (card->info.type == QETH_CARD_TYPE_OSN) {
592 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
593 return -EOPNOTSUPP;
594 }
595 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
596 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
597 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
598 QETH_DBF_TEXT(TRACE, 3, "setmcREC");
599 return -ERESTARTSYS;
600 }
601 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
602 if (!rc)
603 rc = qeth_l2_send_setmac(card, addr->sa_data);
604 return rc;
605 }
606
607 static void qeth_l2_set_multicast_list(struct net_device *dev)
608 {
609 struct qeth_card *card = dev->ml_priv;
610 struct dev_addr_list *dm;
611 struct netdev_hw_addr *ha;
612
613 if (card->info.type == QETH_CARD_TYPE_OSN)
614 return ;
615
616 QETH_DBF_TEXT(TRACE, 3, "setmulti");
617 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
618 (card->state != CARD_STATE_UP))
619 return;
620 qeth_l2_del_all_mc(card);
621 spin_lock_bh(&card->mclock);
622 for (dm = dev->mc_list; dm; dm = dm->next)
623 qeth_l2_add_mc(card, dm->da_addr, 0);
624
625 netdev_for_each_uc_addr(ha, dev)
626 qeth_l2_add_mc(card, ha->addr, 1);
627
628 spin_unlock_bh(&card->mclock);
629 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
630 return;
631 qeth_setadp_promisc_mode(card);
632 }
633
634 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
635 {
636 int rc;
637 struct qeth_hdr *hdr = NULL;
638 int elements = 0;
639 struct qeth_card *card = dev->ml_priv;
640 struct sk_buff *new_skb = skb;
641 int ipv = qeth_get_ip_version(skb);
642 int cast_type = qeth_l2_get_cast_type(card, skb);
643 struct qeth_qdio_out_q *queue = card->qdio.out_qs
644 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
645 int tx_bytes = skb->len;
646 int data_offset = -1;
647 int elements_needed = 0;
648 int hd_len = 0;
649
650 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
651 card->stats.tx_carrier_errors++;
652 goto tx_drop;
653 }
654
655 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
656 (skb->protocol == htons(ETH_P_IPV6)))
657 goto tx_drop;
658
659 if (card->options.performance_stats) {
660 card->perf_stats.outbound_cnt++;
661 card->perf_stats.outbound_start_time = qeth_get_micros();
662 }
663 netif_stop_queue(dev);
664
665 if (card->info.type == QETH_CARD_TYPE_OSN)
666 hdr = (struct qeth_hdr *)skb->data;
667 else {
668 if (card->info.type == QETH_CARD_TYPE_IQD) {
669 new_skb = skb;
670 data_offset = ETH_HLEN;
671 hd_len = ETH_HLEN;
672 hdr = kmem_cache_alloc(qeth_core_header_cache,
673 GFP_ATOMIC);
674 if (!hdr)
675 goto tx_drop;
676 elements_needed++;
677 skb_reset_mac_header(new_skb);
678 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
679 hdr->hdr.l2.pkt_length = new_skb->len;
680 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
681 skb_mac_header(new_skb), ETH_HLEN);
682 } else {
683 /* create a clone with writeable headroom */
684 new_skb = skb_realloc_headroom(skb,
685 sizeof(struct qeth_hdr));
686 if (!new_skb)
687 goto tx_drop;
688 hdr = (struct qeth_hdr *)skb_push(new_skb,
689 sizeof(struct qeth_hdr));
690 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
691 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
692 }
693 }
694
695 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
696 elements_needed);
697 if (!elements) {
698 if (data_offset >= 0)
699 kmem_cache_free(qeth_core_header_cache, hdr);
700 goto tx_drop;
701 }
702
703 if (card->info.type != QETH_CARD_TYPE_IQD)
704 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
705 elements);
706 else
707 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
708 elements, data_offset, hd_len);
709 if (!rc) {
710 card->stats.tx_packets++;
711 card->stats.tx_bytes += tx_bytes;
712 if (new_skb != skb)
713 dev_kfree_skb_any(skb);
714 rc = NETDEV_TX_OK;
715 } else {
716 if (data_offset >= 0)
717 kmem_cache_free(qeth_core_header_cache, hdr);
718
719 if (rc == -EBUSY) {
720 if (new_skb != skb)
721 dev_kfree_skb_any(new_skb);
722 return NETDEV_TX_BUSY;
723 } else
724 goto tx_drop;
725 }
726
727 netif_wake_queue(dev);
728 if (card->options.performance_stats)
729 card->perf_stats.outbound_time += qeth_get_micros() -
730 card->perf_stats.outbound_start_time;
731 return rc;
732
733 tx_drop:
734 card->stats.tx_dropped++;
735 card->stats.tx_errors++;
736 if ((new_skb != skb) && new_skb)
737 dev_kfree_skb_any(new_skb);
738 dev_kfree_skb_any(skb);
739 netif_wake_queue(dev);
740 return NETDEV_TX_OK;
741 }
742
743 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
744 unsigned int qdio_err, unsigned int queue,
745 int first_element, int count, unsigned long card_ptr)
746 {
747 struct net_device *net_dev;
748 struct qeth_card *card;
749 struct qeth_qdio_buffer *buffer;
750 int index;
751 int i;
752
753 card = (struct qeth_card *) card_ptr;
754 net_dev = card->dev;
755 if (card->options.performance_stats) {
756 card->perf_stats.inbound_cnt++;
757 card->perf_stats.inbound_start_time = qeth_get_micros();
758 }
759 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
760 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
761 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
762 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
763 count);
764 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
765 qeth_schedule_recovery(card);
766 return;
767 }
768 for (i = first_element; i < (first_element + count); ++i) {
769 index = i % QDIO_MAX_BUFFERS_PER_Q;
770 buffer = &card->qdio.in_q->bufs[index];
771 if (!(qdio_err &&
772 qeth_check_qdio_errors(card, buffer->buffer, qdio_err,
773 "qinerr")))
774 qeth_l2_process_inbound_buffer(card, buffer, index);
775 /* clear buffer and give back to hardware */
776 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
777 qeth_queue_input_buffer(card, index);
778 }
779 if (card->options.performance_stats)
780 card->perf_stats.inbound_time += qeth_get_micros() -
781 card->perf_stats.inbound_start_time;
782 }
783
784 static int qeth_l2_open(struct net_device *dev)
785 {
786 struct qeth_card *card = dev->ml_priv;
787
788 QETH_DBF_TEXT(TRACE, 4, "qethopen");
789 if (card->state != CARD_STATE_SOFTSETUP)
790 return -ENODEV;
791
792 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
793 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
794 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
795 return -EPERM;
796 }
797 card->data.state = CH_STATE_UP;
798 card->state = CARD_STATE_UP;
799 netif_start_queue(dev);
800
801 if (!card->lan_online && netif_carrier_ok(dev))
802 netif_carrier_off(dev);
803 return 0;
804 }
805
806
807 static int qeth_l2_stop(struct net_device *dev)
808 {
809 struct qeth_card *card = dev->ml_priv;
810
811 QETH_DBF_TEXT(TRACE, 4, "qethstop");
812 netif_tx_disable(dev);
813 if (card->state == CARD_STATE_UP)
814 card->state = CARD_STATE_SOFTSETUP;
815 return 0;
816 }
817
818 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
819 {
820 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
821
822 INIT_LIST_HEAD(&card->vid_list);
823 INIT_LIST_HEAD(&card->mc_list);
824 card->options.layer2 = 1;
825 card->discipline.input_handler = (qdio_handler_t *)
826 qeth_l2_qdio_input_handler;
827 card->discipline.output_handler = (qdio_handler_t *)
828 qeth_qdio_output_handler;
829 card->discipline.recover = qeth_l2_recover;
830 return 0;
831 }
832
833 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
834 {
835 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
836
837 qeth_set_allowed_threads(card, 0, 1);
838 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
839
840 if (cgdev->state == CCWGROUP_ONLINE) {
841 card->use_hard_stop = 1;
842 qeth_l2_set_offline(cgdev);
843 }
844
845 if (card->dev) {
846 unregister_netdev(card->dev);
847 card->dev = NULL;
848 }
849
850 qeth_l2_del_all_mc(card);
851 return;
852 }
853
854 static const struct ethtool_ops qeth_l2_ethtool_ops = {
855 .get_link = ethtool_op_get_link,
856 .get_strings = qeth_core_get_strings,
857 .get_ethtool_stats = qeth_core_get_ethtool_stats,
858 .get_sset_count = qeth_core_get_sset_count,
859 .get_drvinfo = qeth_core_get_drvinfo,
860 .get_settings = qeth_core_ethtool_get_settings,
861 };
862
863 static const struct ethtool_ops qeth_l2_osn_ops = {
864 .get_strings = qeth_core_get_strings,
865 .get_ethtool_stats = qeth_core_get_ethtool_stats,
866 .get_sset_count = qeth_core_get_sset_count,
867 .get_drvinfo = qeth_core_get_drvinfo,
868 };
869
870 static const struct net_device_ops qeth_l2_netdev_ops = {
871 .ndo_open = qeth_l2_open,
872 .ndo_stop = qeth_l2_stop,
873 .ndo_get_stats = qeth_get_stats,
874 .ndo_start_xmit = qeth_l2_hard_start_xmit,
875 .ndo_validate_addr = eth_validate_addr,
876 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
877 .ndo_do_ioctl = qeth_l2_do_ioctl,
878 .ndo_set_mac_address = qeth_l2_set_mac_address,
879 .ndo_change_mtu = qeth_change_mtu,
880 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
881 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
882 .ndo_tx_timeout = qeth_tx_timeout,
883 };
884
885 static int qeth_l2_setup_netdev(struct qeth_card *card)
886 {
887 switch (card->info.type) {
888 case QETH_CARD_TYPE_OSAE:
889 card->dev = alloc_etherdev(0);
890 break;
891 case QETH_CARD_TYPE_IQD:
892 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
893 break;
894 case QETH_CARD_TYPE_OSN:
895 card->dev = alloc_netdev(0, "osn%d", ether_setup);
896 card->dev->flags |= IFF_NOARP;
897 break;
898 default:
899 card->dev = alloc_etherdev(0);
900 }
901
902 if (!card->dev)
903 return -ENODEV;
904
905 card->dev->ml_priv = card;
906 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
907 card->dev->mtu = card->info.initial_mtu;
908 card->dev->netdev_ops = &qeth_l2_netdev_ops;
909 if (card->info.type != QETH_CARD_TYPE_OSN)
910 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
911 else
912 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
913 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
914 card->info.broadcast_capable = 1;
915 qeth_l2_request_initial_mac(card);
916 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
917 return register_netdev(card->dev);
918 }
919
920 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
921 {
922 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
923 int rc = 0;
924 enum qeth_card_states recover_flag;
925
926 BUG_ON(!card);
927 QETH_DBF_TEXT(SETUP, 2, "setonlin");
928 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
929
930 recover_flag = card->state;
931 rc = qeth_core_hardsetup_card(card);
932 if (rc) {
933 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
934 rc = -ENODEV;
935 goto out_remove;
936 }
937
938 if (!card->dev && qeth_l2_setup_netdev(card)) {
939 rc = -ENODEV;
940 goto out_remove;
941 }
942
943 if (card->info.type != QETH_CARD_TYPE_OSN)
944 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
945
946 card->state = CARD_STATE_HARDSETUP;
947 qeth_print_status_message(card);
948
949 /* softsetup */
950 QETH_DBF_TEXT(SETUP, 2, "softsetp");
951
952 rc = qeth_send_startlan(card);
953 if (rc) {
954 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
955 if (rc == 0xe080) {
956 dev_warn(&card->gdev->dev,
957 "The LAN is offline\n");
958 card->lan_online = 0;
959 return 0;
960 }
961 rc = -ENODEV;
962 goto out_remove;
963 } else
964 card->lan_online = 1;
965
966 if (card->info.type != QETH_CARD_TYPE_OSN) {
967 /* configure isolation level */
968 qeth_set_access_ctrl_online(card);
969 qeth_l2_process_vlans(card, 0);
970 }
971
972 netif_tx_disable(card->dev);
973
974 rc = qeth_init_qdio_queues(card);
975 if (rc) {
976 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
977 rc = -ENODEV;
978 goto out_remove;
979 }
980 card->state = CARD_STATE_SOFTSETUP;
981 netif_carrier_on(card->dev);
982
983 qeth_set_allowed_threads(card, 0xffffffff, 0);
984 if (recover_flag == CARD_STATE_RECOVER) {
985 if (recovery_mode &&
986 card->info.type != QETH_CARD_TYPE_OSN) {
987 qeth_l2_open(card->dev);
988 } else {
989 rtnl_lock();
990 dev_open(card->dev);
991 rtnl_unlock();
992 }
993 /* this also sets saved unicast addresses */
994 qeth_l2_set_multicast_list(card->dev);
995 }
996 /* let user_space know that device is online */
997 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
998 return 0;
999
1000 out_remove:
1001 card->use_hard_stop = 1;
1002 qeth_l2_stop_card(card, 0);
1003 ccw_device_set_offline(CARD_DDEV(card));
1004 ccw_device_set_offline(CARD_WDEV(card));
1005 ccw_device_set_offline(CARD_RDEV(card));
1006 if (recover_flag == CARD_STATE_RECOVER)
1007 card->state = CARD_STATE_RECOVER;
1008 else
1009 card->state = CARD_STATE_DOWN;
1010 return rc;
1011 }
1012
1013 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1014 {
1015 return __qeth_l2_set_online(gdev, 0);
1016 }
1017
1018 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1019 int recovery_mode)
1020 {
1021 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1022 int rc = 0, rc2 = 0, rc3 = 0;
1023 enum qeth_card_states recover_flag;
1024
1025 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1026 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1027
1028 if (card->dev && netif_carrier_ok(card->dev))
1029 netif_carrier_off(card->dev);
1030 recover_flag = card->state;
1031 qeth_l2_stop_card(card, recovery_mode);
1032 rc = ccw_device_set_offline(CARD_DDEV(card));
1033 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1034 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1035 if (!rc)
1036 rc = (rc2) ? rc2 : rc3;
1037 if (rc)
1038 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1039 if (recover_flag == CARD_STATE_UP)
1040 card->state = CARD_STATE_RECOVER;
1041 /* let user_space know that device is offline */
1042 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1043 return 0;
1044 }
1045
1046 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1047 {
1048 return __qeth_l2_set_offline(cgdev, 0);
1049 }
1050
1051 static int qeth_l2_recover(void *ptr)
1052 {
1053 struct qeth_card *card;
1054 int rc = 0;
1055
1056 card = (struct qeth_card *) ptr;
1057 QETH_DBF_TEXT(TRACE, 2, "recover1");
1058 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
1059 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1060 return 0;
1061 QETH_DBF_TEXT(TRACE, 2, "recover2");
1062 dev_warn(&card->gdev->dev,
1063 "A recovery process has been started for the device\n");
1064 card->use_hard_stop = 1;
1065 __qeth_l2_set_offline(card->gdev, 1);
1066 rc = __qeth_l2_set_online(card->gdev, 1);
1067 /* don't run another scheduled recovery */
1068 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1069 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1070 if (!rc)
1071 dev_info(&card->gdev->dev,
1072 "Device successfully recovered!\n");
1073 else {
1074 if (card->dev) {
1075 rtnl_lock();
1076 dev_close(card->dev);
1077 rtnl_unlock();
1078 }
1079 dev_warn(&card->gdev->dev, "The qeth device driver "
1080 "failed to recover an error on the device\n");
1081 }
1082 return 0;
1083 }
1084
1085 static int __init qeth_l2_init(void)
1086 {
1087 pr_info("register layer 2 discipline\n");
1088 return 0;
1089 }
1090
1091 static void __exit qeth_l2_exit(void)
1092 {
1093 pr_info("unregister layer 2 discipline\n");
1094 }
1095
1096 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1097 {
1098 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1099 qeth_qdio_clear_card(card, 0);
1100 qeth_clear_qdio_buffers(card);
1101 }
1102
1103 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1104 {
1105 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1106
1107 if (card->dev)
1108 netif_device_detach(card->dev);
1109 qeth_set_allowed_threads(card, 0, 1);
1110 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1111 if (gdev->state == CCWGROUP_OFFLINE)
1112 return 0;
1113 if (card->state == CARD_STATE_UP) {
1114 card->use_hard_stop = 1;
1115 __qeth_l2_set_offline(card->gdev, 1);
1116 } else
1117 __qeth_l2_set_offline(card->gdev, 0);
1118 return 0;
1119 }
1120
1121 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1122 {
1123 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1124 int rc = 0;
1125
1126 if (gdev->state == CCWGROUP_OFFLINE)
1127 goto out;
1128
1129 if (card->state == CARD_STATE_RECOVER) {
1130 rc = __qeth_l2_set_online(card->gdev, 1);
1131 if (rc) {
1132 if (card->dev) {
1133 rtnl_lock();
1134 dev_close(card->dev);
1135 rtnl_unlock();
1136 }
1137 }
1138 } else
1139 rc = __qeth_l2_set_online(card->gdev, 0);
1140 out:
1141 qeth_set_allowed_threads(card, 0xffffffff, 0);
1142 if (card->dev)
1143 netif_device_attach(card->dev);
1144 if (rc)
1145 dev_warn(&card->gdev->dev, "The qeth device driver "
1146 "failed to recover an error on the device\n");
1147 return rc;
1148 }
1149
1150 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1151 .probe = qeth_l2_probe_device,
1152 .remove = qeth_l2_remove_device,
1153 .set_online = qeth_l2_set_online,
1154 .set_offline = qeth_l2_set_offline,
1155 .shutdown = qeth_l2_shutdown,
1156 .freeze = qeth_l2_pm_suspend,
1157 .thaw = qeth_l2_pm_resume,
1158 .restore = qeth_l2_pm_resume,
1159 };
1160 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1161
1162 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1163 struct qeth_cmd_buffer *iob)
1164 {
1165 unsigned long flags;
1166 int rc = 0;
1167
1168 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
1169
1170 wait_event(card->wait_q,
1171 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1172 qeth_prepare_control_data(card, len, iob);
1173 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
1174 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1175 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1176 (addr_t) iob, 0, 0);
1177 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1178 if (rc) {
1179 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1180 "ccw_device_start rc = %i\n", rc);
1181 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1182 qeth_release_buffer(iob->channel, iob);
1183 atomic_set(&card->write.irq_pending, 0);
1184 wake_up(&card->wait_q);
1185 }
1186 return rc;
1187 }
1188
1189 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1190 struct qeth_cmd_buffer *iob, int data_len)
1191 {
1192 u16 s1, s2;
1193
1194 QETH_DBF_TEXT(TRACE, 4, "osndipa");
1195
1196 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1197 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1198 s2 = (u16)data_len;
1199 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1200 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1201 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1202 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1203 return qeth_osn_send_control_data(card, s1, iob);
1204 }
1205
1206 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1207 {
1208 struct qeth_cmd_buffer *iob;
1209 struct qeth_card *card;
1210 int rc;
1211
1212 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
1213 if (!dev)
1214 return -ENODEV;
1215 card = dev->ml_priv;
1216 if (!card)
1217 return -ENODEV;
1218 if ((card->state != CARD_STATE_UP) &&
1219 (card->state != CARD_STATE_SOFTSETUP))
1220 return -ENODEV;
1221 iob = qeth_wait_for_buffer(&card->write);
1222 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1223 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1224 return rc;
1225 }
1226 EXPORT_SYMBOL(qeth_osn_assist);
1227
1228 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1229 int (*assist_cb)(struct net_device *, void *),
1230 int (*data_cb)(struct sk_buff *))
1231 {
1232 struct qeth_card *card;
1233
1234 QETH_DBF_TEXT(TRACE, 2, "osnreg");
1235 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1236 if (*dev == NULL)
1237 return -ENODEV;
1238 card = (*dev)->ml_priv;
1239 if (!card)
1240 return -ENODEV;
1241 if ((assist_cb == NULL) || (data_cb == NULL))
1242 return -EINVAL;
1243 card->osn_info.assist_cb = assist_cb;
1244 card->osn_info.data_cb = data_cb;
1245 return 0;
1246 }
1247 EXPORT_SYMBOL(qeth_osn_register);
1248
1249 void qeth_osn_deregister(struct net_device *dev)
1250 {
1251 struct qeth_card *card;
1252
1253 QETH_DBF_TEXT(TRACE, 2, "osndereg");
1254 if (!dev)
1255 return;
1256 card = dev->ml_priv;
1257 if (!card)
1258 return;
1259 card->osn_info.assist_cb = NULL;
1260 card->osn_info.data_cb = NULL;
1261 return;
1262 }
1263 EXPORT_SYMBOL(qeth_osn_deregister);
1264
1265 module_init(qeth_l2_init);
1266 module_exit(qeth_l2_exit);
1267 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1268 MODULE_DESCRIPTION("qeth layer 2 discipline");
1269 MODULE_LICENSE("GPL");
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