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Staging: strip: delete the driver
[linux/fpc-iii.git] / drivers / s390 / net / qeth_l2_main.c
blob6a801dc3bf8eb6546ccb3bc6960ca8b6c632ac4c
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_OSAE) &&
60 !card->info.guestlan)
61 return 1;
62 return 0;
63 break;
64 case SIOCGMIIPHY:
65 mii_data = if_mii(rq);
66 mii_data->phy_id = 0;
67 break;
68 case SIOCGMIIREG:
69 mii_data = if_mii(rq);
70 if (mii_data->phy_id != 0)
71 rc = -EINVAL;
72 else
73 mii_data->val_out = qeth_mdio_read(dev,
74 mii_data->phy_id, mii_data->reg_num);
75 break;
76 default:
77 rc = -EOPNOTSUPP;
78 }
79 if (rc)
80 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
81 return rc;
82 }
83
84 static int qeth_l2_verify_dev(struct net_device *dev)
85 {
86 struct qeth_card *card;
87 unsigned long flags;
88 int rc = 0;
89
90 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
91 list_for_each_entry(card, &qeth_core_card_list.list, list) {
92 if (card->dev == dev) {
93 rc = QETH_REAL_CARD;
94 break;
95 }
96 }
97 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
98
99 return rc;
100 }
101
102 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
103 {
104 struct qeth_card *card;
105 struct net_device *ndev;
106 __u16 temp_dev_no;
107 unsigned long flags;
108 struct ccw_dev_id read_devid;
109
110 ndev = NULL;
111 memcpy(&temp_dev_no, read_dev_no, 2);
112 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
113 list_for_each_entry(card, &qeth_core_card_list.list, list) {
114 ccw_device_get_id(CARD_RDEV(card), &read_devid);
115 if (read_devid.devno == temp_dev_no) {
116 ndev = card->dev;
117 break;
118 }
119 }
120 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
121 return ndev;
122 }
123
124 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
125 struct qeth_reply *reply,
126 unsigned long data)
127 {
128 struct qeth_ipa_cmd *cmd;
129 __u8 *mac;
130
131 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
132 cmd = (struct qeth_ipa_cmd *) data;
133 mac = &cmd->data.setdelmac.mac[0];
134 /* MAC already registered, needed in couple/uncouple case */
135 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
136 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
137 mac, QETH_CARD_IFNAME(card));
138 cmd->hdr.return_code = 0;
139 }
140 if (cmd->hdr.return_code)
141 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
142 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
143 return 0;
144 }
145
146 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
147 {
148 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
149 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
150 qeth_l2_send_setgroupmac_cb);
151 }
152
153 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
154 struct qeth_reply *reply,
155 unsigned long data)
156 {
157 struct qeth_ipa_cmd *cmd;
158 __u8 *mac;
159
160 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
161 cmd = (struct qeth_ipa_cmd *) data;
162 mac = &cmd->data.setdelmac.mac[0];
163 if (cmd->hdr.return_code)
164 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
165 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
166 return 0;
167 }
168
169 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
170 {
171 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
172 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
173 qeth_l2_send_delgroupmac_cb);
174 }
175
176 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
177 {
178 struct qeth_mc_mac *mc;
179 int rc;
180
181 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
182
183 if (!mc)
184 return;
185
186 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
187 mc->mc_addrlen = OSA_ADDR_LEN;
188 mc->is_vmac = vmac;
189
190 if (vmac) {
191 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
192 NULL);
193 } else {
194 rc = qeth_l2_send_setgroupmac(card, mac);
195 }
196
197 if (!rc)
198 list_add_tail(&mc->list, &card->mc_list);
199 else
200 kfree(mc);
201 }
202
203 static void qeth_l2_del_all_mc(struct qeth_card *card)
204 {
205 struct qeth_mc_mac *mc, *tmp;
206
207 spin_lock_bh(&card->mclock);
208 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
209 if (mc->is_vmac)
210 qeth_l2_send_setdelmac(card, mc->mc_addr,
211 IPA_CMD_DELVMAC, NULL);
212 else
213 qeth_l2_send_delgroupmac(card, mc->mc_addr);
214 list_del(&mc->list);
215 kfree(mc);
216 }
217 spin_unlock_bh(&card->mclock);
218 }
219
220 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
221 struct sk_buff *skb)
222 {
223 if (card->info.type == QETH_CARD_TYPE_OSN)
224 return RTN_UNSPEC;
225 if (is_broadcast_ether_addr(skb->data))
226 return RTN_BROADCAST;
227 if (is_multicast_ether_addr(skb->data))
228 return RTN_MULTICAST;
229 return RTN_UNSPEC;
230 }
231
232 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
233 struct sk_buff *skb, int ipv, int cast_type)
234 {
235 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
236
237 memset(hdr, 0, sizeof(struct qeth_hdr));
238 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
239
240 /* set byte byte 3 to casting flags */
241 if (cast_type == RTN_MULTICAST)
242 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
243 else if (cast_type == RTN_BROADCAST)
244 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
245 else
246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
247
248 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
249 /* VSWITCH relies on the VLAN
250 * information to be present in
251 * the QDIO header */
252 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
254 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
255 }
256 }
257
258 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
259 struct qeth_reply *reply, unsigned long data)
260 {
261 struct qeth_ipa_cmd *cmd;
262
263 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
264 cmd = (struct qeth_ipa_cmd *) data;
265 if (cmd->hdr.return_code) {
266 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
267 "Continuing\n", cmd->data.setdelvlan.vlan_id,
268 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
269 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
270 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
271 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
272 }
273 return 0;
274 }
275
276 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
277 enum qeth_ipa_cmds ipacmd)
278 {
279 struct qeth_ipa_cmd *cmd;
280 struct qeth_cmd_buffer *iob;
281
282 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
283 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
284 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
285 cmd->data.setdelvlan.vlan_id = i;
286 return qeth_send_ipa_cmd(card, iob,
287 qeth_l2_send_setdelvlan_cb, NULL);
288 }
289
290 static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
291 {
292 struct qeth_vlan_vid *id;
293 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
294 spin_lock_bh(&card->vlanlock);
295 list_for_each_entry(id, &card->vid_list, list) {
296 if (clear)
297 qeth_l2_send_setdelvlan(card, id->vid,
298 IPA_CMD_DELVLAN);
299 else
300 qeth_l2_send_setdelvlan(card, id->vid,
301 IPA_CMD_SETVLAN);
302 }
303 spin_unlock_bh(&card->vlanlock);
304 }
305
306 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
307 {
308 struct qeth_card *card = dev->ml_priv;
309 struct qeth_vlan_vid *id;
310
311 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
312 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
313 QETH_DBF_TEXT(TRACE, 3, "aidREC");
314 return;
315 }
316 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
317 if (id) {
318 id->vid = vid;
319 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
320 spin_lock_bh(&card->vlanlock);
321 list_add_tail(&id->list, &card->vid_list);
322 spin_unlock_bh(&card->vlanlock);
323 }
324 }
325
326 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
327 {
328 struct qeth_vlan_vid *id, *tmpid = NULL;
329 struct qeth_card *card = dev->ml_priv;
330
331 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
332 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
333 QETH_DBF_TEXT(TRACE, 3, "kidREC");
334 return;
335 }
336 spin_lock_bh(&card->vlanlock);
337 list_for_each_entry(id, &card->vid_list, list) {
338 if (id->vid == vid) {
339 list_del(&id->list);
340 tmpid = id;
341 break;
342 }
343 }
344 spin_unlock_bh(&card->vlanlock);
345 if (tmpid) {
346 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
347 kfree(tmpid);
348 }
349 qeth_l2_set_multicast_list(card->dev);
350 }
351
352 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
353 {
354 int rc = 0;
355
356 QETH_DBF_TEXT(SETUP , 2, "stopcard");
357 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
358
359 qeth_set_allowed_threads(card, 0, 1);
360 if (card->read.state == CH_STATE_UP &&
361 card->write.state == CH_STATE_UP &&
362 (card->state == CARD_STATE_UP)) {
363 if (recovery_mode &&
364 card->info.type != QETH_CARD_TYPE_OSN) {
365 qeth_l2_stop(card->dev);
366 } else {
367 rtnl_lock();
368 dev_close(card->dev);
369 rtnl_unlock();
370 }
371 if (!card->use_hard_stop ||
372 recovery_mode) {
373 __u8 *mac = &card->dev->dev_addr[0];
374 rc = qeth_l2_send_delmac(card, mac);
375 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
376 }
377 card->state = CARD_STATE_SOFTSETUP;
378 }
379 if (card->state == CARD_STATE_SOFTSETUP) {
380 qeth_l2_process_vlans(card, 1);
381 if (!card->use_hard_stop ||
382 recovery_mode)
383 qeth_l2_del_all_mc(card);
384 qeth_clear_ipacmd_list(card);
385 card->state = CARD_STATE_HARDSETUP;
386 }
387 if (card->state == CARD_STATE_HARDSETUP) {
388 qeth_qdio_clear_card(card, 0);
389 qeth_clear_qdio_buffers(card);
390 qeth_clear_working_pool_list(card);
391 card->state = CARD_STATE_DOWN;
392 }
393 if (card->state == CARD_STATE_DOWN) {
394 qeth_clear_cmd_buffers(&card->read);
395 qeth_clear_cmd_buffers(&card->write);
396 }
397 card->use_hard_stop = 0;
398 return rc;
399 }
400
401 static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
402 struct qeth_qdio_buffer *buf, int index)
403 {
404 struct qdio_buffer_element *element;
405 struct sk_buff *skb;
406 struct qeth_hdr *hdr;
407 int offset;
408 unsigned int len;
409
410 /* get first element of current buffer */
411 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
412 offset = 0;
413 if (card->options.performance_stats)
414 card->perf_stats.bufs_rec++;
415 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
416 &offset, &hdr))) {
417 skb->dev = card->dev;
418 /* is device UP ? */
419 if (!(card->dev->flags & IFF_UP)) {
420 dev_kfree_skb_any(skb);
421 continue;
422 }
423
424 switch (hdr->hdr.l2.id) {
425 case QETH_HEADER_TYPE_LAYER2:
426 skb->pkt_type = PACKET_HOST;
427 skb->protocol = eth_type_trans(skb, skb->dev);
428 if (card->options.checksum_type == NO_CHECKSUMMING)
429 skb->ip_summed = CHECKSUM_UNNECESSARY;
430 else
431 skb->ip_summed = CHECKSUM_NONE;
432 if (skb->protocol == htons(ETH_P_802_2))
433 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
434 len = skb->len;
435 netif_rx(skb);
436 break;
437 case QETH_HEADER_TYPE_OSN:
438 if (card->info.type == QETH_CARD_TYPE_OSN) {
439 skb_push(skb, sizeof(struct qeth_hdr));
440 skb_copy_to_linear_data(skb, hdr,
441 sizeof(struct qeth_hdr));
442 len = skb->len;
443 card->osn_info.data_cb(skb);
444 break;
445 }
446 /* else unknown */
447 default:
448 dev_kfree_skb_any(skb);
449 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
450 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
451 continue;
452 }
453 card->stats.rx_packets++;
454 card->stats.rx_bytes += len;
455 }
456 }
457
458 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
459 enum qeth_ipa_cmds ipacmd,
460 int (*reply_cb) (struct qeth_card *,
461 struct qeth_reply*,
462 unsigned long))
463 {
464 struct qeth_ipa_cmd *cmd;
465 struct qeth_cmd_buffer *iob;
466
467 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
468 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
469 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
470 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
471 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
472 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
473 }
474
475 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
476 struct qeth_reply *reply,
477 unsigned long data)
478 {
479 struct qeth_ipa_cmd *cmd;
480
481 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
482 cmd = (struct qeth_ipa_cmd *) data;
483 if (cmd->hdr.return_code) {
484 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
485 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
486 switch (cmd->hdr.return_code) {
487 case IPA_RC_L2_DUP_MAC:
488 case IPA_RC_L2_DUP_LAYER3_MAC:
489 dev_warn(&card->gdev->dev,
490 "MAC address %pM already exists\n",
491 card->dev->dev_addr);
492 break;
493 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
494 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
495 dev_warn(&card->gdev->dev,
496 "MAC address %pM is not authorized\n",
497 card->dev->dev_addr);
498 break;
499 default:
500 break;
501 }
502 cmd->hdr.return_code = -EIO;
503 } else {
504 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
505 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
506 OSA_ADDR_LEN);
507 dev_info(&card->gdev->dev,
508 "MAC address %pM successfully registered on device %s\n",
509 card->dev->dev_addr, card->dev->name);
510 }
511 return 0;
512 }
513
514 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
515 {
516 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
517 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
518 qeth_l2_send_setmac_cb);
519 }
520
521 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
522 struct qeth_reply *reply,
523 unsigned long data)
524 {
525 struct qeth_ipa_cmd *cmd;
526
527 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
528 cmd = (struct qeth_ipa_cmd *) data;
529 if (cmd->hdr.return_code) {
530 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
531 cmd->hdr.return_code = -EIO;
532 return 0;
533 }
534 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
535
536 return 0;
537 }
538
539 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
540 {
541 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
542 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
543 return 0;
544 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
545 qeth_l2_send_delmac_cb);
546 }
547
548 static int qeth_l2_request_initial_mac(struct qeth_card *card)
549 {
550 int rc = 0;
551 char vendor_pre[] = {0x02, 0x00, 0x00};
552
553 QETH_DBF_TEXT(SETUP, 2, "doL2init");
554 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
555
556 rc = qeth_query_setadapterparms(card);
557 if (rc) {
558 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
559 "device %s: x%x\n", CARD_BUS_ID(card), rc);
560 }
561
562 if ((card->info.type == QETH_CARD_TYPE_IQD) ||
563 (card->info.guestlan)) {
564 rc = qeth_setadpparms_change_macaddr(card);
565 if (rc) {
566 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
567 "device %s: x%x\n", CARD_BUS_ID(card), rc);
568 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
569 return rc;
570 }
571 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
572 } else {
573 random_ether_addr(card->dev->dev_addr);
574 memcpy(card->dev->dev_addr, vendor_pre, 3);
575 }
576 return 0;
577 }
578
579 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
580 {
581 struct sockaddr *addr = p;
582 struct qeth_card *card = dev->ml_priv;
583 int rc = 0;
584
585 QETH_DBF_TEXT(TRACE, 3, "setmac");
586
587 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
588 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
589 return -EOPNOTSUPP;
590 }
591
592 if (card->info.type == QETH_CARD_TYPE_OSN) {
593 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
594 return -EOPNOTSUPP;
595 }
596 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
597 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
598 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
599 QETH_DBF_TEXT(TRACE, 3, "setmcREC");
600 return -ERESTARTSYS;
601 }
602 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
603 if (!rc)
604 rc = qeth_l2_send_setmac(card, addr->sa_data);
605 return rc;
606 }
607
608 static void qeth_l2_set_multicast_list(struct net_device *dev)
609 {
610 struct qeth_card *card = dev->ml_priv;
611 struct dev_addr_list *dm;
612 struct netdev_hw_addr *ha;
613
614 if (card->info.type == QETH_CARD_TYPE_OSN)
615 return ;
616
617 QETH_DBF_TEXT(TRACE, 3, "setmulti");
618 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
619 (card->state != CARD_STATE_UP))
620 return;
621 qeth_l2_del_all_mc(card);
622 spin_lock_bh(&card->mclock);
623 for (dm = dev->mc_list; dm; dm = dm->next)
624 qeth_l2_add_mc(card, dm->da_addr, 0);
625
626 netdev_for_each_uc_addr(ha, dev)
627 qeth_l2_add_mc(card, ha->addr, 1);
628
629 spin_unlock_bh(&card->mclock);
630 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
631 return;
632 qeth_setadp_promisc_mode(card);
633 }
634
635 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
636 {
637 int rc;
638 struct qeth_hdr *hdr = NULL;
639 int elements = 0;
640 struct qeth_card *card = dev->ml_priv;
641 struct sk_buff *new_skb = skb;
642 int ipv = qeth_get_ip_version(skb);
643 int cast_type = qeth_l2_get_cast_type(card, skb);
644 struct qeth_qdio_out_q *queue = card->qdio.out_qs
645 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
646 int tx_bytes = skb->len;
647 int data_offset = -1;
648 int elements_needed = 0;
649 int hd_len = 0;
650
651 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
652 card->stats.tx_carrier_errors++;
653 goto tx_drop;
654 }
655
656 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
657 (skb->protocol == htons(ETH_P_IPV6)))
658 goto tx_drop;
659
660 if (card->options.performance_stats) {
661 card->perf_stats.outbound_cnt++;
662 card->perf_stats.outbound_start_time = qeth_get_micros();
663 }
664 netif_stop_queue(dev);
665
666 if (card->info.type == QETH_CARD_TYPE_OSN)
667 hdr = (struct qeth_hdr *)skb->data;
668 else {
669 if (card->info.type == QETH_CARD_TYPE_IQD) {
670 new_skb = skb;
671 data_offset = ETH_HLEN;
672 hd_len = ETH_HLEN;
673 hdr = kmem_cache_alloc(qeth_core_header_cache,
674 GFP_ATOMIC);
675 if (!hdr)
676 goto tx_drop;
677 elements_needed++;
678 skb_reset_mac_header(new_skb);
679 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
680 hdr->hdr.l2.pkt_length = new_skb->len;
681 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
682 skb_mac_header(new_skb), ETH_HLEN);
683 } else {
684 /* create a clone with writeable headroom */
685 new_skb = skb_realloc_headroom(skb,
686 sizeof(struct qeth_hdr));
687 if (!new_skb)
688 goto tx_drop;
689 hdr = (struct qeth_hdr *)skb_push(new_skb,
690 sizeof(struct qeth_hdr));
691 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
692 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
693 }
694 }
695
696 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
697 elements_needed);
698 if (!elements) {
699 if (data_offset >= 0)
700 kmem_cache_free(qeth_core_header_cache, hdr);
701 goto tx_drop;
702 }
703
704 if (card->info.type != QETH_CARD_TYPE_IQD)
705 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
706 elements);
707 else
708 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
709 elements, data_offset, hd_len);
710 if (!rc) {
711 card->stats.tx_packets++;
712 card->stats.tx_bytes += tx_bytes;
713 if (new_skb != skb)
714 dev_kfree_skb_any(skb);
715 rc = NETDEV_TX_OK;
716 } else {
717 if (data_offset >= 0)
718 kmem_cache_free(qeth_core_header_cache, hdr);
719
720 if (rc == -EBUSY) {
721 if (new_skb != skb)
722 dev_kfree_skb_any(new_skb);
723 return NETDEV_TX_BUSY;
724 } else
725 goto tx_drop;
726 }
727
728 netif_wake_queue(dev);
729 if (card->options.performance_stats)
730 card->perf_stats.outbound_time += qeth_get_micros() -
731 card->perf_stats.outbound_start_time;
732 return rc;
733
734 tx_drop:
735 card->stats.tx_dropped++;
736 card->stats.tx_errors++;
737 if ((new_skb != skb) && new_skb)
738 dev_kfree_skb_any(new_skb);
739 dev_kfree_skb_any(skb);
740 netif_wake_queue(dev);
741 return NETDEV_TX_OK;
742 }
743
744 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
745 unsigned int qdio_err, unsigned int queue,
746 int first_element, int count, unsigned long card_ptr)
747 {
748 struct net_device *net_dev;
749 struct qeth_card *card;
750 struct qeth_qdio_buffer *buffer;
751 int index;
752 int i;
753
754 card = (struct qeth_card *) card_ptr;
755 net_dev = card->dev;
756 if (card->options.performance_stats) {
757 card->perf_stats.inbound_cnt++;
758 card->perf_stats.inbound_start_time = qeth_get_micros();
759 }
760 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
761 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
762 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
763 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
764 count);
765 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
766 qeth_schedule_recovery(card);
767 return;
768 }
769 for (i = first_element; i < (first_element + count); ++i) {
770 index = i % QDIO_MAX_BUFFERS_PER_Q;
771 buffer = &card->qdio.in_q->bufs[index];
772 if (!(qdio_err &&
773 qeth_check_qdio_errors(card, buffer->buffer, qdio_err,
774 "qinerr")))
775 qeth_l2_process_inbound_buffer(card, buffer, index);
776 /* clear buffer and give back to hardware */
777 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
778 qeth_queue_input_buffer(card, index);
779 }
780 if (card->options.performance_stats)
781 card->perf_stats.inbound_time += qeth_get_micros() -
782 card->perf_stats.inbound_start_time;
783 }
784
785 static int qeth_l2_open(struct net_device *dev)
786 {
787 struct qeth_card *card = dev->ml_priv;
788
789 QETH_DBF_TEXT(TRACE, 4, "qethopen");
790 if (card->state != CARD_STATE_SOFTSETUP)
791 return -ENODEV;
792
793 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
794 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
795 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
796 return -EPERM;
797 }
798 card->data.state = CH_STATE_UP;
799 card->state = CARD_STATE_UP;
800 netif_start_queue(dev);
801
802 if (!card->lan_online && netif_carrier_ok(dev))
803 netif_carrier_off(dev);
804 return 0;
805 }
806
807
808 static int qeth_l2_stop(struct net_device *dev)
809 {
810 struct qeth_card *card = dev->ml_priv;
811
812 QETH_DBF_TEXT(TRACE, 4, "qethstop");
813 netif_tx_disable(dev);
814 if (card->state == CARD_STATE_UP)
815 card->state = CARD_STATE_SOFTSETUP;
816 return 0;
817 }
818
819 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
820 {
821 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
822
823 INIT_LIST_HEAD(&card->vid_list);
824 INIT_LIST_HEAD(&card->mc_list);
825 card->options.layer2 = 1;
826 card->discipline.input_handler = (qdio_handler_t *)
827 qeth_l2_qdio_input_handler;
828 card->discipline.output_handler = (qdio_handler_t *)
829 qeth_qdio_output_handler;
830 card->discipline.recover = qeth_l2_recover;
831 return 0;
832 }
833
834 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
835 {
836 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
837
838 qeth_set_allowed_threads(card, 0, 1);
839 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
840
841 if (cgdev->state == CCWGROUP_ONLINE) {
842 card->use_hard_stop = 1;
843 qeth_l2_set_offline(cgdev);
844 }
845
846 if (card->dev) {
847 unregister_netdev(card->dev);
848 card->dev = NULL;
849 }
850
851 qeth_l2_del_all_mc(card);
852 return;
853 }
854
855 static const struct ethtool_ops qeth_l2_ethtool_ops = {
856 .get_link = ethtool_op_get_link,
857 .get_strings = qeth_core_get_strings,
858 .get_ethtool_stats = qeth_core_get_ethtool_stats,
859 .get_sset_count = qeth_core_get_sset_count,
860 .get_drvinfo = qeth_core_get_drvinfo,
861 .get_settings = qeth_core_ethtool_get_settings,
862 };
863
864 static const struct ethtool_ops qeth_l2_osn_ops = {
865 .get_strings = qeth_core_get_strings,
866 .get_ethtool_stats = qeth_core_get_ethtool_stats,
867 .get_sset_count = qeth_core_get_sset_count,
868 .get_drvinfo = qeth_core_get_drvinfo,
869 };
870
871 static const struct net_device_ops qeth_l2_netdev_ops = {
872 .ndo_open = qeth_l2_open,
873 .ndo_stop = qeth_l2_stop,
874 .ndo_get_stats = qeth_get_stats,
875 .ndo_start_xmit = qeth_l2_hard_start_xmit,
876 .ndo_validate_addr = eth_validate_addr,
877 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
878 .ndo_do_ioctl = qeth_l2_do_ioctl,
879 .ndo_set_mac_address = qeth_l2_set_mac_address,
880 .ndo_change_mtu = qeth_change_mtu,
881 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
882 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
883 .ndo_tx_timeout = qeth_tx_timeout,
884 };
885
886 static int qeth_l2_setup_netdev(struct qeth_card *card)
887 {
888 switch (card->info.type) {
889 case QETH_CARD_TYPE_OSAE:
890 card->dev = alloc_etherdev(0);
891 break;
892 case QETH_CARD_TYPE_IQD:
893 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
894 break;
895 case QETH_CARD_TYPE_OSN:
896 card->dev = alloc_netdev(0, "osn%d", ether_setup);
897 card->dev->flags |= IFF_NOARP;
898 break;
899 default:
900 card->dev = alloc_etherdev(0);
901 }
902
903 if (!card->dev)
904 return -ENODEV;
905
906 card->dev->ml_priv = card;
907 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
908 card->dev->mtu = card->info.initial_mtu;
909 card->dev->netdev_ops = &qeth_l2_netdev_ops;
910 if (card->info.type != QETH_CARD_TYPE_OSN)
911 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
912 else
913 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
914 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
915 card->info.broadcast_capable = 1;
916 qeth_l2_request_initial_mac(card);
917 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
918 return register_netdev(card->dev);
919 }
920
921 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
922 {
923 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
924 int rc = 0;
925 enum qeth_card_states recover_flag;
926
927 BUG_ON(!card);
928 QETH_DBF_TEXT(SETUP, 2, "setonlin");
929 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
930
931 recover_flag = card->state;
932 rc = qeth_core_hardsetup_card(card);
933 if (rc) {
934 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
935 rc = -ENODEV;
936 goto out_remove;
937 }
938
939 if (!card->dev && qeth_l2_setup_netdev(card)) {
940 rc = -ENODEV;
941 goto out_remove;
942 }
943
944 if (card->info.type != QETH_CARD_TYPE_OSN)
945 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
946
947 card->state = CARD_STATE_HARDSETUP;
948 qeth_print_status_message(card);
949
950 /* softsetup */
951 QETH_DBF_TEXT(SETUP, 2, "softsetp");
952
953 rc = qeth_send_startlan(card);
954 if (rc) {
955 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
956 if (rc == 0xe080) {
957 dev_warn(&card->gdev->dev,
958 "The LAN is offline\n");
959 card->lan_online = 0;
960 return 0;
961 }
962 rc = -ENODEV;
963 goto out_remove;
964 } else
965 card->lan_online = 1;
966
967 if (card->info.type != QETH_CARD_TYPE_OSN) {
968 /* configure isolation level */
969 qeth_set_access_ctrl_online(card);
970 qeth_l2_process_vlans(card, 0);
971 }
972
973 netif_tx_disable(card->dev);
974
975 rc = qeth_init_qdio_queues(card);
976 if (rc) {
977 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
978 rc = -ENODEV;
979 goto out_remove;
980 }
981 card->state = CARD_STATE_SOFTSETUP;
982 netif_carrier_on(card->dev);
983
984 qeth_set_allowed_threads(card, 0xffffffff, 0);
985 if (recover_flag == CARD_STATE_RECOVER) {
986 if (recovery_mode &&
987 card->info.type != QETH_CARD_TYPE_OSN) {
988 qeth_l2_open(card->dev);
989 } else {
990 rtnl_lock();
991 dev_open(card->dev);
992 rtnl_unlock();
993 }
994 /* this also sets saved unicast addresses */
995 qeth_l2_set_multicast_list(card->dev);
996 }
997 /* let user_space know that device is online */
998 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
999 return 0;
1000
1001 out_remove:
1002 card->use_hard_stop = 1;
1003 qeth_l2_stop_card(card, 0);
1004 ccw_device_set_offline(CARD_DDEV(card));
1005 ccw_device_set_offline(CARD_WDEV(card));
1006 ccw_device_set_offline(CARD_RDEV(card));
1007 if (recover_flag == CARD_STATE_RECOVER)
1008 card->state = CARD_STATE_RECOVER;
1009 else
1010 card->state = CARD_STATE_DOWN;
1011 return rc;
1012 }
1013
1014 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1015 {
1016 return __qeth_l2_set_online(gdev, 0);
1017 }
1018
1019 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1020 int recovery_mode)
1021 {
1022 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1023 int rc = 0, rc2 = 0, rc3 = 0;
1024 enum qeth_card_states recover_flag;
1025
1026 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1027 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1028
1029 if (card->dev && netif_carrier_ok(card->dev))
1030 netif_carrier_off(card->dev);
1031 recover_flag = card->state;
1032 qeth_l2_stop_card(card, recovery_mode);
1033 rc = ccw_device_set_offline(CARD_DDEV(card));
1034 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1035 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1036 if (!rc)
1037 rc = (rc2) ? rc2 : rc3;
1038 if (rc)
1039 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1040 if (recover_flag == CARD_STATE_UP)
1041 card->state = CARD_STATE_RECOVER;
1042 /* let user_space know that device is offline */
1043 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1044 return 0;
1045 }
1046
1047 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1048 {
1049 return __qeth_l2_set_offline(cgdev, 0);
1050 }
1051
1052 static int qeth_l2_recover(void *ptr)
1053 {
1054 struct qeth_card *card;
1055 int rc = 0;
1056
1057 card = (struct qeth_card *) ptr;
1058 QETH_DBF_TEXT(TRACE, 2, "recover1");
1059 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
1060 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1061 return 0;
1062 QETH_DBF_TEXT(TRACE, 2, "recover2");
1063 dev_warn(&card->gdev->dev,
1064 "A recovery process has been started for the device\n");
1065 card->use_hard_stop = 1;
1066 __qeth_l2_set_offline(card->gdev, 1);
1067 rc = __qeth_l2_set_online(card->gdev, 1);
1068 /* don't run another scheduled recovery */
1069 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1070 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1071 if (!rc)
1072 dev_info(&card->gdev->dev,
1073 "Device successfully recovered!\n");
1074 else {
1075 rtnl_lock();
1076 dev_close(card->dev);
1077 rtnl_unlock();
1078 dev_warn(&card->gdev->dev, "The qeth device driver "
1079 "failed to recover an error on the device\n");
1080 }
1081 return 0;
1082 }
1083
1084 static int __init qeth_l2_init(void)
1085 {
1086 pr_info("register layer 2 discipline\n");
1087 return 0;
1088 }
1089
1090 static void __exit qeth_l2_exit(void)
1091 {
1092 pr_info("unregister layer 2 discipline\n");
1093 }
1094
1095 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1096 {
1097 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1098 qeth_qdio_clear_card(card, 0);
1099 qeth_clear_qdio_buffers(card);
1100 }
1101
1102 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1103 {
1104 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1105
1106 if (card->dev)
1107 netif_device_detach(card->dev);
1108 qeth_set_allowed_threads(card, 0, 1);
1109 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1110 if (gdev->state == CCWGROUP_OFFLINE)
1111 return 0;
1112 if (card->state == CARD_STATE_UP) {
1113 card->use_hard_stop = 1;
1114 __qeth_l2_set_offline(card->gdev, 1);
1115 } else
1116 __qeth_l2_set_offline(card->gdev, 0);
1117 return 0;
1118 }
1119
1120 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1121 {
1122 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1123 int rc = 0;
1124
1125 if (gdev->state == CCWGROUP_OFFLINE)
1126 goto out;
1127
1128 if (card->state == CARD_STATE_RECOVER) {
1129 rc = __qeth_l2_set_online(card->gdev, 1);
1130 if (rc) {
1131 rtnl_lock();
1132 dev_close(card->dev);
1133 rtnl_unlock();
1134 }
1135 } else
1136 rc = __qeth_l2_set_online(card->gdev, 0);
1137 out:
1138 qeth_set_allowed_threads(card, 0xffffffff, 0);
1139 if (card->dev)
1140 netif_device_attach(card->dev);
1141 if (rc)
1142 dev_warn(&card->gdev->dev, "The qeth device driver "
1143 "failed to recover an error on the device\n");
1144 return rc;
1145 }
1146
1147 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1148 .probe = qeth_l2_probe_device,
1149 .remove = qeth_l2_remove_device,
1150 .set_online = qeth_l2_set_online,
1151 .set_offline = qeth_l2_set_offline,
1152 .shutdown = qeth_l2_shutdown,
1153 .freeze = qeth_l2_pm_suspend,
1154 .thaw = qeth_l2_pm_resume,
1155 .restore = qeth_l2_pm_resume,
1156 };
1157 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1158
1159 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1160 struct qeth_cmd_buffer *iob)
1161 {
1162 unsigned long flags;
1163 int rc = 0;
1164
1165 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
1166
1167 wait_event(card->wait_q,
1168 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1169 qeth_prepare_control_data(card, len, iob);
1170 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
1171 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1172 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1173 (addr_t) iob, 0, 0);
1174 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1175 if (rc) {
1176 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1177 "ccw_device_start rc = %i\n", rc);
1178 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1179 qeth_release_buffer(iob->channel, iob);
1180 atomic_set(&card->write.irq_pending, 0);
1181 wake_up(&card->wait_q);
1182 }
1183 return rc;
1184 }
1185
1186 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1187 struct qeth_cmd_buffer *iob, int data_len)
1188 {
1189 u16 s1, s2;
1190
1191 QETH_DBF_TEXT(TRACE, 4, "osndipa");
1192
1193 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1194 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1195 s2 = (u16)data_len;
1196 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1197 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1198 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1199 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1200 return qeth_osn_send_control_data(card, s1, iob);
1201 }
1202
1203 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1204 {
1205 struct qeth_cmd_buffer *iob;
1206 struct qeth_card *card;
1207 int rc;
1208
1209 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
1210 if (!dev)
1211 return -ENODEV;
1212 card = dev->ml_priv;
1213 if (!card)
1214 return -ENODEV;
1215 if ((card->state != CARD_STATE_UP) &&
1216 (card->state != CARD_STATE_SOFTSETUP))
1217 return -ENODEV;
1218 iob = qeth_wait_for_buffer(&card->write);
1219 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1220 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1221 return rc;
1222 }
1223 EXPORT_SYMBOL(qeth_osn_assist);
1224
1225 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1226 int (*assist_cb)(struct net_device *, void *),
1227 int (*data_cb)(struct sk_buff *))
1228 {
1229 struct qeth_card *card;
1230
1231 QETH_DBF_TEXT(TRACE, 2, "osnreg");
1232 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1233 if (*dev == NULL)
1234 return -ENODEV;
1235 card = (*dev)->ml_priv;
1236 if (!card)
1237 return -ENODEV;
1238 if ((assist_cb == NULL) || (data_cb == NULL))
1239 return -EINVAL;
1240 card->osn_info.assist_cb = assist_cb;
1241 card->osn_info.data_cb = data_cb;
1242 return 0;
1243 }
1244 EXPORT_SYMBOL(qeth_osn_register);
1245
1246 void qeth_osn_deregister(struct net_device *dev)
1247 {
1248 struct qeth_card *card;
1249
1250 QETH_DBF_TEXT(TRACE, 2, "osndereg");
1251 if (!dev)
1252 return;
1253 card = dev->ml_priv;
1254 if (!card)
1255 return;
1256 card->osn_info.assist_cb = NULL;
1257 card->osn_info.data_cb = NULL;
1258 return;
1259 }
1260 EXPORT_SYMBOL(qeth_osn_deregister);
1261
1262 module_init(qeth_l2_init);
1263 module_exit(qeth_l2_exit);
1264 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1265 MODULE_DESCRIPTION("qeth layer 2 discipline");
1266 MODULE_LICENSE("GPL");
Linux with added FPC-III support