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netdev: drivers should make ethtool_ops const
[linux-2.6/btrfs-unstable.git] / drivers / s390 / net / qeth_l2_main.c
blob94b161121c2625581b90c1e088066d209ca341eb
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->dev->last_rx = jiffies;
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 "
491 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
492 "already exists\n",
493 card->dev->dev_addr[0], card->dev->dev_addr[1],
494 card->dev->dev_addr[2], card->dev->dev_addr[3],
495 card->dev->dev_addr[4], card->dev->dev_addr[5]);
496 break;
497 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
498 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
499 dev_warn(&card->gdev->dev,
500 "MAC address "
501 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
502 "is not authorized\n",
503 card->dev->dev_addr[0], card->dev->dev_addr[1],
504 card->dev->dev_addr[2], card->dev->dev_addr[3],
505 card->dev->dev_addr[4], card->dev->dev_addr[5]);
506 break;
507 default:
508 break;
509 }
510 cmd->hdr.return_code = -EIO;
511 } else {
512 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
513 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
514 OSA_ADDR_LEN);
515 dev_info(&card->gdev->dev,
516 "MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
517 "successfully registered on device %s\n",
518 card->dev->dev_addr[0], card->dev->dev_addr[1],
519 card->dev->dev_addr[2], card->dev->dev_addr[3],
520 card->dev->dev_addr[4], card->dev->dev_addr[5],
521 card->dev->name);
522 }
523 return 0;
524 }
525
526 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
527 {
528 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
529 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
530 qeth_l2_send_setmac_cb);
531 }
532
533 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
534 struct qeth_reply *reply,
535 unsigned long data)
536 {
537 struct qeth_ipa_cmd *cmd;
538
539 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
540 cmd = (struct qeth_ipa_cmd *) data;
541 if (cmd->hdr.return_code) {
542 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
543 cmd->hdr.return_code = -EIO;
544 return 0;
545 }
546 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
547
548 return 0;
549 }
550
551 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
552 {
553 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
554 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
555 return 0;
556 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
557 qeth_l2_send_delmac_cb);
558 }
559
560 static int qeth_l2_request_initial_mac(struct qeth_card *card)
561 {
562 int rc = 0;
563 char vendor_pre[] = {0x02, 0x00, 0x00};
564
565 QETH_DBF_TEXT(SETUP, 2, "doL2init");
566 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
567
568 rc = qeth_query_setadapterparms(card);
569 if (rc) {
570 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
571 "device %s: x%x\n", CARD_BUS_ID(card), rc);
572 }
573
574 if ((card->info.type == QETH_CARD_TYPE_IQD) ||
575 (card->info.guestlan)) {
576 rc = qeth_setadpparms_change_macaddr(card);
577 if (rc) {
578 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
579 "device %s: x%x\n", CARD_BUS_ID(card), rc);
580 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
581 return rc;
582 }
583 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
584 } else {
585 random_ether_addr(card->dev->dev_addr);
586 memcpy(card->dev->dev_addr, vendor_pre, 3);
587 }
588 return 0;
589 }
590
591 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
592 {
593 struct sockaddr *addr = p;
594 struct qeth_card *card = dev->ml_priv;
595 int rc = 0;
596
597 QETH_DBF_TEXT(TRACE, 3, "setmac");
598
599 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
600 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
601 return -EOPNOTSUPP;
602 }
603
604 if (card->info.type == QETH_CARD_TYPE_OSN) {
605 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
606 return -EOPNOTSUPP;
607 }
608 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
609 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
610 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
611 QETH_DBF_TEXT(TRACE, 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 dev_addr_list *dm;
624 struct netdev_hw_addr *ha;
625
626 if (card->info.type == QETH_CARD_TYPE_OSN)
627 return ;
628
629 QETH_DBF_TEXT(TRACE, 3, "setmulti");
630 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
631 (card->state != CARD_STATE_UP))
632 return;
633 qeth_l2_del_all_mc(card);
634 spin_lock_bh(&card->mclock);
635 for (dm = dev->mc_list; dm; dm = dm->next)
636 qeth_l2_add_mc(card, dm->da_addr, 0);
637
638 list_for_each_entry(ha, &dev->uc.list, list)
639 qeth_l2_add_mc(card, ha->addr, 1);
640
641 spin_unlock_bh(&card->mclock);
642 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
643 return;
644 qeth_setadp_promisc_mode(card);
645 }
646
647 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
648 {
649 int rc;
650 struct qeth_hdr *hdr = NULL;
651 int elements = 0;
652 struct qeth_card *card = dev->ml_priv;
653 struct sk_buff *new_skb = skb;
654 int ipv = qeth_get_ip_version(skb);
655 int cast_type = qeth_l2_get_cast_type(card, skb);
656 struct qeth_qdio_out_q *queue = card->qdio.out_qs
657 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
658 int tx_bytes = skb->len;
659 int data_offset = -1;
660 int elements_needed = 0;
661 int hd_len = 0;
662
663 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
664 card->stats.tx_carrier_errors++;
665 goto tx_drop;
666 }
667
668 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
669 (skb->protocol == htons(ETH_P_IPV6)))
670 goto tx_drop;
671
672 if (card->options.performance_stats) {
673 card->perf_stats.outbound_cnt++;
674 card->perf_stats.outbound_start_time = qeth_get_micros();
675 }
676 netif_stop_queue(dev);
677
678 if (card->info.type == QETH_CARD_TYPE_OSN)
679 hdr = (struct qeth_hdr *)skb->data;
680 else {
681 if (card->info.type == QETH_CARD_TYPE_IQD) {
682 new_skb = skb;
683 data_offset = ETH_HLEN;
684 hd_len = ETH_HLEN;
685 hdr = kmem_cache_alloc(qeth_core_header_cache,
686 GFP_ATOMIC);
687 if (!hdr)
688 goto tx_drop;
689 elements_needed++;
690 skb_reset_mac_header(new_skb);
691 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
692 hdr->hdr.l2.pkt_length = new_skb->len;
693 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
694 skb_mac_header(new_skb), ETH_HLEN);
695 } else {
696 /* create a clone with writeable headroom */
697 new_skb = skb_realloc_headroom(skb,
698 sizeof(struct qeth_hdr));
699 if (!new_skb)
700 goto tx_drop;
701 hdr = (struct qeth_hdr *)skb_push(new_skb,
702 sizeof(struct qeth_hdr));
703 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
704 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
705 }
706 }
707
708 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
709 elements_needed);
710 if (!elements) {
711 if (data_offset >= 0)
712 kmem_cache_free(qeth_core_header_cache, hdr);
713 goto tx_drop;
714 }
715
716 if (card->info.type != QETH_CARD_TYPE_IQD)
717 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
718 elements);
719 else
720 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
721 elements, data_offset, hd_len);
722 if (!rc) {
723 card->stats.tx_packets++;
724 card->stats.tx_bytes += tx_bytes;
725 if (new_skb != skb)
726 dev_kfree_skb_any(skb);
727 rc = NETDEV_TX_OK;
728 } else {
729 if (data_offset >= 0)
730 kmem_cache_free(qeth_core_header_cache, hdr);
731
732 if (rc == -EBUSY) {
733 if (new_skb != skb)
734 dev_kfree_skb_any(new_skb);
735 return NETDEV_TX_BUSY;
736 } else
737 goto tx_drop;
738 }
739
740 netif_wake_queue(dev);
741 if (card->options.performance_stats)
742 card->perf_stats.outbound_time += qeth_get_micros() -
743 card->perf_stats.outbound_start_time;
744 return rc;
745
746 tx_drop:
747 card->stats.tx_dropped++;
748 card->stats.tx_errors++;
749 if ((new_skb != skb) && new_skb)
750 dev_kfree_skb_any(new_skb);
751 dev_kfree_skb_any(skb);
752 netif_wake_queue(dev);
753 return NETDEV_TX_OK;
754 }
755
756 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
757 unsigned int qdio_err, unsigned int queue,
758 int first_element, int count, unsigned long card_ptr)
759 {
760 struct net_device *net_dev;
761 struct qeth_card *card;
762 struct qeth_qdio_buffer *buffer;
763 int index;
764 int i;
765
766 card = (struct qeth_card *) card_ptr;
767 net_dev = card->dev;
768 if (card->options.performance_stats) {
769 card->perf_stats.inbound_cnt++;
770 card->perf_stats.inbound_start_time = qeth_get_micros();
771 }
772 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
773 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
774 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
775 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
776 count);
777 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
778 qeth_schedule_recovery(card);
779 return;
780 }
781 for (i = first_element; i < (first_element + count); ++i) {
782 index = i % QDIO_MAX_BUFFERS_PER_Q;
783 buffer = &card->qdio.in_q->bufs[index];
784 if (!(qdio_err &&
785 qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr")))
786 qeth_l2_process_inbound_buffer(card, buffer, index);
787 /* clear buffer and give back to hardware */
788 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
789 qeth_queue_input_buffer(card, index);
790 }
791 if (card->options.performance_stats)
792 card->perf_stats.inbound_time += qeth_get_micros() -
793 card->perf_stats.inbound_start_time;
794 }
795
796 static int qeth_l2_open(struct net_device *dev)
797 {
798 struct qeth_card *card = dev->ml_priv;
799
800 QETH_DBF_TEXT(TRACE, 4, "qethopen");
801 if (card->state != CARD_STATE_SOFTSETUP)
802 return -ENODEV;
803
804 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
805 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
806 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
807 return -EPERM;
808 }
809 card->data.state = CH_STATE_UP;
810 card->state = CARD_STATE_UP;
811 netif_start_queue(dev);
812
813 if (!card->lan_online && netif_carrier_ok(dev))
814 netif_carrier_off(dev);
815 return 0;
816 }
817
818
819 static int qeth_l2_stop(struct net_device *dev)
820 {
821 struct qeth_card *card = dev->ml_priv;
822
823 QETH_DBF_TEXT(TRACE, 4, "qethstop");
824 netif_tx_disable(dev);
825 if (card->state == CARD_STATE_UP)
826 card->state = CARD_STATE_SOFTSETUP;
827 return 0;
828 }
829
830 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
831 {
832 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
833
834 INIT_LIST_HEAD(&card->vid_list);
835 INIT_LIST_HEAD(&card->mc_list);
836 card->options.layer2 = 1;
837 card->discipline.input_handler = (qdio_handler_t *)
838 qeth_l2_qdio_input_handler;
839 card->discipline.output_handler = (qdio_handler_t *)
840 qeth_qdio_output_handler;
841 card->discipline.recover = qeth_l2_recover;
842 return 0;
843 }
844
845 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
846 {
847 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
848
849 qeth_set_allowed_threads(card, 0, 1);
850 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
851
852 if (cgdev->state == CCWGROUP_ONLINE) {
853 card->use_hard_stop = 1;
854 qeth_l2_set_offline(cgdev);
855 }
856
857 if (card->dev) {
858 unregister_netdev(card->dev);
859 card->dev = NULL;
860 }
861
862 qeth_l2_del_all_mc(card);
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_stats_count = qeth_core_get_stats_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_stats_count = qeth_core_get_stats_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_OSAE:
901 card->dev = alloc_etherdev(0);
902 break;
903 case QETH_CARD_TYPE_IQD:
904 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
905 break;
906 case QETH_CARD_TYPE_OSN:
907 card->dev = alloc_netdev(0, "osn%d", ether_setup);
908 card->dev->flags |= IFF_NOARP;
909 break;
910 default:
911 card->dev = alloc_etherdev(0);
912 }
913
914 if (!card->dev)
915 return -ENODEV;
916
917 card->dev->ml_priv = card;
918 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
919 card->dev->mtu = card->info.initial_mtu;
920 card->dev->netdev_ops = &qeth_l2_netdev_ops;
921 if (card->info.type != QETH_CARD_TYPE_OSN)
922 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
923 else
924 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
925 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
926 card->info.broadcast_capable = 1;
927 qeth_l2_request_initial_mac(card);
928 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
929 return register_netdev(card->dev);
930 }
931
932 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
933 {
934 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
935 int rc = 0;
936 enum qeth_card_states recover_flag;
937
938 BUG_ON(!card);
939 QETH_DBF_TEXT(SETUP, 2, "setonlin");
940 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
941
942 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
943 recover_flag = card->state;
944 rc = ccw_device_set_online(CARD_RDEV(card));
945 if (rc) {
946 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
947 return -EIO;
948 }
949 rc = ccw_device_set_online(CARD_WDEV(card));
950 if (rc) {
951 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
952 return -EIO;
953 }
954 rc = ccw_device_set_online(CARD_DDEV(card));
955 if (rc) {
956 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
957 return -EIO;
958 }
959
960 rc = qeth_core_hardsetup_card(card);
961 if (rc) {
962 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
963 goto out_remove;
964 }
965
966 if (!card->dev && qeth_l2_setup_netdev(card))
967 goto out_remove;
968
969 if (card->info.type != QETH_CARD_TYPE_OSN)
970 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
971
972 card->state = CARD_STATE_HARDSETUP;
973 qeth_print_status_message(card);
974
975 /* softsetup */
976 QETH_DBF_TEXT(SETUP, 2, "softsetp");
977
978 rc = qeth_send_startlan(card);
979 if (rc) {
980 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
981 if (rc == 0xe080) {
982 dev_warn(&card->gdev->dev,
983 "The LAN is offline\n");
984 card->lan_online = 0;
985 return 0;
986 }
987 goto out_remove;
988 } else
989 card->lan_online = 1;
990
991 if (card->info.type != QETH_CARD_TYPE_OSN) {
992 qeth_set_large_send(card, card->options.large_send);
993 qeth_l2_process_vlans(card, 0);
994 }
995
996 netif_tx_disable(card->dev);
997
998 rc = qeth_init_qdio_queues(card);
999 if (rc) {
1000 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1001 goto out_remove;
1002 }
1003 card->state = CARD_STATE_SOFTSETUP;
1004 netif_carrier_on(card->dev);
1005
1006 qeth_set_allowed_threads(card, 0xffffffff, 0);
1007 if (recover_flag == CARD_STATE_RECOVER) {
1008 if (recovery_mode &&
1009 card->info.type != QETH_CARD_TYPE_OSN) {
1010 qeth_l2_open(card->dev);
1011 } else {
1012 rtnl_lock();
1013 dev_open(card->dev);
1014 rtnl_unlock();
1015 }
1016 /* this also sets saved unicast addresses */
1017 qeth_l2_set_multicast_list(card->dev);
1018 }
1019 /* let user_space know that device is online */
1020 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1021 return 0;
1022 out_remove:
1023 card->use_hard_stop = 1;
1024 qeth_l2_stop_card(card, 0);
1025 ccw_device_set_offline(CARD_DDEV(card));
1026 ccw_device_set_offline(CARD_WDEV(card));
1027 ccw_device_set_offline(CARD_RDEV(card));
1028 if (recover_flag == CARD_STATE_RECOVER)
1029 card->state = CARD_STATE_RECOVER;
1030 else
1031 card->state = CARD_STATE_DOWN;
1032 return -ENODEV;
1033 }
1034
1035 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1036 {
1037 return __qeth_l2_set_online(gdev, 0);
1038 }
1039
1040 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1041 int recovery_mode)
1042 {
1043 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1044 int rc = 0, rc2 = 0, rc3 = 0;
1045 enum qeth_card_states recover_flag;
1046
1047 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1048 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1049
1050 if (card->dev && netif_carrier_ok(card->dev))
1051 netif_carrier_off(card->dev);
1052 recover_flag = card->state;
1053 qeth_l2_stop_card(card, recovery_mode);
1054 rc = ccw_device_set_offline(CARD_DDEV(card));
1055 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1056 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1057 if (!rc)
1058 rc = (rc2) ? rc2 : rc3;
1059 if (rc)
1060 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1061 if (recover_flag == CARD_STATE_UP)
1062 card->state = CARD_STATE_RECOVER;
1063 /* let user_space know that device is offline */
1064 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1065 return 0;
1066 }
1067
1068 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1069 {
1070 return __qeth_l2_set_offline(cgdev, 0);
1071 }
1072
1073 static int qeth_l2_recover(void *ptr)
1074 {
1075 struct qeth_card *card;
1076 int rc = 0;
1077
1078 card = (struct qeth_card *) ptr;
1079 QETH_DBF_TEXT(TRACE, 2, "recover1");
1080 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
1081 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1082 return 0;
1083 QETH_DBF_TEXT(TRACE, 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 if (card->dev) {
1097 rtnl_lock();
1098 dev_close(card->dev);
1099 rtnl_unlock();
1100 }
1101 dev_warn(&card->gdev->dev, "The qeth device driver "
1102 "failed to recover an error on the device\n");
1103 }
1104 return 0;
1105 }
1106
1107 static int __init qeth_l2_init(void)
1108 {
1109 pr_info("register layer 2 discipline\n");
1110 return 0;
1111 }
1112
1113 static void __exit qeth_l2_exit(void)
1114 {
1115 pr_info("unregister layer 2 discipline\n");
1116 }
1117
1118 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1119 {
1120 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1121 qeth_qdio_clear_card(card, 0);
1122 qeth_clear_qdio_buffers(card);
1123 }
1124
1125 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1126 {
1127 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1128
1129 if (card->dev)
1130 netif_device_detach(card->dev);
1131 qeth_set_allowed_threads(card, 0, 1);
1132 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1133 if (gdev->state == CCWGROUP_OFFLINE)
1134 return 0;
1135 if (card->state == CARD_STATE_UP) {
1136 card->use_hard_stop = 1;
1137 __qeth_l2_set_offline(card->gdev, 1);
1138 } else
1139 __qeth_l2_set_offline(card->gdev, 0);
1140 return 0;
1141 }
1142
1143 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1144 {
1145 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1146 int rc = 0;
1147
1148 if (gdev->state == CCWGROUP_OFFLINE)
1149 goto out;
1150
1151 if (card->state == CARD_STATE_RECOVER) {
1152 rc = __qeth_l2_set_online(card->gdev, 1);
1153 if (rc) {
1154 if (card->dev) {
1155 rtnl_lock();
1156 dev_close(card->dev);
1157 rtnl_unlock();
1158 }
1159 }
1160 } else
1161 rc = __qeth_l2_set_online(card->gdev, 0);
1162 out:
1163 qeth_set_allowed_threads(card, 0xffffffff, 0);
1164 if (card->dev)
1165 netif_device_attach(card->dev);
1166 if (rc)
1167 dev_warn(&card->gdev->dev, "The qeth device driver "
1168 "failed to recover an error on the device\n");
1169 return rc;
1170 }
1171
1172 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1173 .probe = qeth_l2_probe_device,
1174 .remove = qeth_l2_remove_device,
1175 .set_online = qeth_l2_set_online,
1176 .set_offline = qeth_l2_set_offline,
1177 .shutdown = qeth_l2_shutdown,
1178 .freeze = qeth_l2_pm_suspend,
1179 .thaw = qeth_l2_pm_resume,
1180 .restore = qeth_l2_pm_resume,
1181 };
1182 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1183
1184 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1185 struct qeth_cmd_buffer *iob)
1186 {
1187 unsigned long flags;
1188 int rc = 0;
1189
1190 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
1191
1192 wait_event(card->wait_q,
1193 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1194 qeth_prepare_control_data(card, len, iob);
1195 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
1196 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1197 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1198 (addr_t) iob, 0, 0);
1199 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1200 if (rc) {
1201 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1202 "ccw_device_start rc = %i\n", rc);
1203 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1204 qeth_release_buffer(iob->channel, iob);
1205 atomic_set(&card->write.irq_pending, 0);
1206 wake_up(&card->wait_q);
1207 }
1208 return rc;
1209 }
1210
1211 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1212 struct qeth_cmd_buffer *iob, int data_len)
1213 {
1214 u16 s1, s2;
1215
1216 QETH_DBF_TEXT(TRACE, 4, "osndipa");
1217
1218 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1219 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1220 s2 = (u16)data_len;
1221 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1222 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1223 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1224 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1225 return qeth_osn_send_control_data(card, s1, iob);
1226 }
1227
1228 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1229 {
1230 struct qeth_cmd_buffer *iob;
1231 struct qeth_card *card;
1232 int rc;
1233
1234 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
1235 if (!dev)
1236 return -ENODEV;
1237 card = dev->ml_priv;
1238 if (!card)
1239 return -ENODEV;
1240 if ((card->state != CARD_STATE_UP) &&
1241 (card->state != CARD_STATE_SOFTSETUP))
1242 return -ENODEV;
1243 iob = qeth_wait_for_buffer(&card->write);
1244 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1245 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1246 return rc;
1247 }
1248 EXPORT_SYMBOL(qeth_osn_assist);
1249
1250 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1251 int (*assist_cb)(struct net_device *, void *),
1252 int (*data_cb)(struct sk_buff *))
1253 {
1254 struct qeth_card *card;
1255
1256 QETH_DBF_TEXT(TRACE, 2, "osnreg");
1257 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1258 if (*dev == NULL)
1259 return -ENODEV;
1260 card = (*dev)->ml_priv;
1261 if (!card)
1262 return -ENODEV;
1263 if ((assist_cb == NULL) || (data_cb == NULL))
1264 return -EINVAL;
1265 card->osn_info.assist_cb = assist_cb;
1266 card->osn_info.data_cb = data_cb;
1267 return 0;
1268 }
1269 EXPORT_SYMBOL(qeth_osn_register);
1270
1271 void qeth_osn_deregister(struct net_device *dev)
1272 {
1273 struct qeth_card *card;
1274
1275 QETH_DBF_TEXT(TRACE, 2, "osndereg");
1276 if (!dev)
1277 return;
1278 card = dev->ml_priv;
1279 if (!card)
1280 return;
1281 card->osn_info.assist_cb = NULL;
1282 card->osn_info.data_cb = NULL;
1283 return;
1284 }
1285 EXPORT_SYMBOL(qeth_osn_deregister);
1286
1287 module_init(qeth_l2_init);
1288 module_exit(qeth_l2_exit);
1289 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1290 MODULE_DESCRIPTION("qeth layer 2 discipline");
1291 MODULE_LICENSE("GPL");
(deprecated) Btrfs devel tree