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qeth: reduce number of kernel messages
[linux-2.6/linux-loongson.git] / drivers / s390 / net / qeth_l2_main.c
blobdd7659c8de16e5b626f23ba5d899f6455e5a6e06
1 /*
2 * drivers/s390/net/qeth_l2_main.c
3 *
4 * Copyright IBM Corp. 2007
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 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/string.h>
14 #include <linux/errno.h>
15 #include <linux/kernel.h>
16 #include <linux/etherdevice.h>
17 #include <linux/mii.h>
18 #include <linux/ip.h>
19
20 #include <asm/s390_rdev.h>
21
22 #include "qeth_core.h"
23 #include "qeth_core_offl.h"
24
25 static int qeth_l2_set_offline(struct ccwgroup_device *);
26 static int qeth_l2_stop(struct net_device *);
27 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
28 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
29 enum qeth_ipa_cmds,
30 int (*reply_cb) (struct qeth_card *,
31 struct qeth_reply*,
32 unsigned long));
33 static void qeth_l2_set_multicast_list(struct net_device *);
34 static int qeth_l2_recover(void *);
35
36 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
37 {
38 struct qeth_card *card = netdev_priv(dev);
39 struct mii_ioctl_data *mii_data;
40 int rc = 0;
41
42 if (!card)
43 return -ENODEV;
44
45 if ((card->state != CARD_STATE_UP) &&
46 (card->state != CARD_STATE_SOFTSETUP))
47 return -ENODEV;
48
49 if (card->info.type == QETH_CARD_TYPE_OSN)
50 return -EPERM;
51
52 switch (cmd) {
53 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
54 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
55 break;
56 case SIOC_QETH_GET_CARD_TYPE:
57 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
58 !card->info.guestlan)
59 return 1;
60 return 0;
61 break;
62 case SIOCGMIIPHY:
63 mii_data = if_mii(rq);
64 mii_data->phy_id = 0;
65 break;
66 case SIOCGMIIREG:
67 mii_data = if_mii(rq);
68 if (mii_data->phy_id != 0)
69 rc = -EINVAL;
70 else
71 mii_data->val_out = qeth_mdio_read(dev,
72 mii_data->phy_id, mii_data->reg_num);
73 break;
74 default:
75 rc = -EOPNOTSUPP;
76 }
77 if (rc)
78 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
79 return rc;
80 }
81
82 static int qeth_l2_verify_dev(struct net_device *dev)
83 {
84 struct qeth_card *card;
85 unsigned long flags;
86 int rc = 0;
87
88 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
89 list_for_each_entry(card, &qeth_core_card_list.list, list) {
90 if (card->dev == dev) {
91 rc = QETH_REAL_CARD;
92 break;
93 }
94 }
95 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
96
97 return rc;
98 }
99
100 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
101 {
102 struct qeth_card *card;
103 struct net_device *ndev;
104 __u16 temp_dev_no;
105 unsigned long flags;
106 struct ccw_dev_id read_devid;
107
108 ndev = NULL;
109 memcpy(&temp_dev_no, read_dev_no, 2);
110 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
111 list_for_each_entry(card, &qeth_core_card_list.list, list) {
112 ccw_device_get_id(CARD_RDEV(card), &read_devid);
113 if (read_devid.devno == temp_dev_no) {
114 ndev = card->dev;
115 break;
116 }
117 }
118 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
119 return ndev;
120 }
121
122 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
123 struct qeth_reply *reply,
124 unsigned long data)
125 {
126 struct qeth_ipa_cmd *cmd;
127 __u8 *mac;
128
129 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
130 cmd = (struct qeth_ipa_cmd *) data;
131 mac = &cmd->data.setdelmac.mac[0];
132 /* MAC already registered, needed in couple/uncouple case */
133 if (cmd->hdr.return_code == 0x2005) {
134 QETH_DBF_MESSAGE(2, "Group MAC %02x:%02x:%02x:%02x:%02x:%02x "
135 "already existing on %s \n",
136 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
137 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 "
142 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
143 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
144 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
145 return 0;
146 }
147
148 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
149 {
150 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
151 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
152 qeth_l2_send_setgroupmac_cb);
153 }
154
155 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
156 struct qeth_reply *reply,
157 unsigned long data)
158 {
159 struct qeth_ipa_cmd *cmd;
160 __u8 *mac;
161
162 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
163 cmd = (struct qeth_ipa_cmd *) data;
164 mac = &cmd->data.setdelmac.mac[0];
165 if (cmd->hdr.return_code)
166 QETH_DBF_MESSAGE(2, "Could not delete group MAC "
167 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
168 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
169 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
170 return 0;
171 }
172
173 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
174 {
175 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
176 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
177 qeth_l2_send_delgroupmac_cb);
178 }
179
180 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac)
181 {
182 struct qeth_mc_mac *mc;
183
184 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
185
186 if (!mc)
187 return;
188
189 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
190 mc->mc_addrlen = OSA_ADDR_LEN;
191
192 if (!qeth_l2_send_setgroupmac(card, mac))
193 list_add_tail(&mc->list, &card->mc_list);
194 else
195 kfree(mc);
196 }
197
198 static void qeth_l2_del_all_mc(struct qeth_card *card)
199 {
200 struct qeth_mc_mac *mc, *tmp;
201
202 spin_lock_bh(&card->mclock);
203 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
204 qeth_l2_send_delgroupmac(card, mc->mc_addr);
205 list_del(&mc->list);
206 kfree(mc);
207 }
208 spin_unlock_bh(&card->mclock);
209 }
210
211 static void qeth_l2_get_packet_type(struct qeth_card *card,
212 struct qeth_hdr *hdr, struct sk_buff *skb)
213 {
214 __u16 hdr_mac;
215
216 if (!memcmp(skb->data + QETH_HEADER_SIZE,
217 skb->dev->broadcast, 6)) {
218 /* broadcast? */
219 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
220 return;
221 }
222 hdr_mac = *((__u16 *)skb->data);
223 /* tr multicast? */
224 switch (card->info.link_type) {
225 case QETH_LINK_TYPE_HSTR:
226 case QETH_LINK_TYPE_LANE_TR:
227 if ((hdr_mac == QETH_TR_MAC_NC) ||
228 (hdr_mac == QETH_TR_MAC_C))
229 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
230 else
231 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
232 break;
233 /* eth or so multicast? */
234 default:
235 if ((hdr_mac == QETH_ETH_MAC_V4) ||
236 (hdr_mac == QETH_ETH_MAC_V6))
237 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
238 else
239 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
240 }
241 }
242
243 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
244 struct sk_buff *skb, int ipv, int cast_type)
245 {
246 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)((skb->data) +
247 QETH_HEADER_SIZE);
248
249 memset(hdr, 0, sizeof(struct qeth_hdr));
250 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
251
252 /* set byte byte 3 to casting flags */
253 if (cast_type == RTN_MULTICAST)
254 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
255 else if (cast_type == RTN_BROADCAST)
256 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
257 else
258 qeth_l2_get_packet_type(card, hdr, skb);
259
260 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
261 /* VSWITCH relies on the VLAN
262 * information to be present in
263 * the QDIO header */
264 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
265 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
266 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
267 }
268 }
269
270 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
271 struct qeth_reply *reply, unsigned long data)
272 {
273 struct qeth_ipa_cmd *cmd;
274
275 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
276 cmd = (struct qeth_ipa_cmd *) data;
277 if (cmd->hdr.return_code) {
278 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
279 "Continuing\n", cmd->data.setdelvlan.vlan_id,
280 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
281 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
282 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
283 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
284 }
285 return 0;
286 }
287
288 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
289 enum qeth_ipa_cmds ipacmd)
290 {
291 struct qeth_ipa_cmd *cmd;
292 struct qeth_cmd_buffer *iob;
293
294 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
295 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
296 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
297 cmd->data.setdelvlan.vlan_id = i;
298 return qeth_send_ipa_cmd(card, iob,
299 qeth_l2_send_setdelvlan_cb, NULL);
300 }
301
302 static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
303 {
304 struct qeth_vlan_vid *id;
305 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
306 spin_lock_bh(&card->vlanlock);
307 list_for_each_entry(id, &card->vid_list, list) {
308 if (clear)
309 qeth_l2_send_setdelvlan(card, id->vid,
310 IPA_CMD_DELVLAN);
311 else
312 qeth_l2_send_setdelvlan(card, id->vid,
313 IPA_CMD_SETVLAN);
314 }
315 spin_unlock_bh(&card->vlanlock);
316 }
317
318 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
319 {
320 struct qeth_card *card = netdev_priv(dev);
321 struct qeth_vlan_vid *id;
322
323 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
324 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
325 if (id) {
326 id->vid = vid;
327 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
328 spin_lock_bh(&card->vlanlock);
329 list_add_tail(&id->list, &card->vid_list);
330 spin_unlock_bh(&card->vlanlock);
331 }
332 }
333
334 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
335 {
336 struct qeth_vlan_vid *id, *tmpid = NULL;
337 struct qeth_card *card = netdev_priv(dev);
338
339 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
340 spin_lock_bh(&card->vlanlock);
341 list_for_each_entry(id, &card->vid_list, list) {
342 if (id->vid == vid) {
343 list_del(&id->list);
344 tmpid = id;
345 break;
346 }
347 }
348 spin_unlock_bh(&card->vlanlock);
349 if (tmpid) {
350 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
351 kfree(tmpid);
352 }
353 qeth_l2_set_multicast_list(card->dev);
354 }
355
356 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
357 {
358 int rc = 0;
359
360 QETH_DBF_TEXT(SETUP , 2, "stopcard");
361 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
362
363 qeth_set_allowed_threads(card, 0, 1);
364 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
365 return -ERESTARTSYS;
366 if (card->read.state == CH_STATE_UP &&
367 card->write.state == CH_STATE_UP &&
368 (card->state == CARD_STATE_UP)) {
369 if (recovery_mode &&
370 card->info.type != QETH_CARD_TYPE_OSN) {
371 qeth_l2_stop(card->dev);
372 } else {
373 rtnl_lock();
374 dev_close(card->dev);
375 rtnl_unlock();
376 }
377 if (!card->use_hard_stop) {
378 __u8 *mac = &card->dev->dev_addr[0];
379 rc = qeth_l2_send_delmac(card, mac);
380 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
381 }
382 card->state = CARD_STATE_SOFTSETUP;
383 }
384 if (card->state == CARD_STATE_SOFTSETUP) {
385 qeth_l2_process_vlans(card, 1);
386 qeth_l2_del_all_mc(card);
387 qeth_clear_ipacmd_list(card);
388 card->state = CARD_STATE_HARDSETUP;
389 }
390 if (card->state == CARD_STATE_HARDSETUP) {
391 qeth_qdio_clear_card(card, 0);
392 qeth_clear_qdio_buffers(card);
393 qeth_clear_working_pool_list(card);
394 card->state = CARD_STATE_DOWN;
395 }
396 if (card->state == CARD_STATE_DOWN) {
397 qeth_clear_cmd_buffers(&card->read);
398 qeth_clear_cmd_buffers(&card->write);
399 }
400 card->use_hard_stop = 0;
401 return rc;
402 }
403
404 static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
405 struct qeth_qdio_buffer *buf, int index)
406 {
407 struct qdio_buffer_element *element;
408 struct sk_buff *skb;
409 struct qeth_hdr *hdr;
410 int offset;
411 unsigned int len;
412
413 /* get first element of current buffer */
414 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
415 offset = 0;
416 if (card->options.performance_stats)
417 card->perf_stats.bufs_rec++;
418 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
419 &offset, &hdr))) {
420 skb->dev = card->dev;
421 /* is device UP ? */
422 if (!(card->dev->flags & IFF_UP)) {
423 dev_kfree_skb_any(skb);
424 continue;
425 }
426
427 switch (hdr->hdr.l2.id) {
428 case QETH_HEADER_TYPE_LAYER2:
429 skb->pkt_type = PACKET_HOST;
430 skb->protocol = eth_type_trans(skb, skb->dev);
431 if (card->options.checksum_type == NO_CHECKSUMMING)
432 skb->ip_summed = CHECKSUM_UNNECESSARY;
433 else
434 skb->ip_summed = CHECKSUM_NONE;
435 if (skb->protocol == htons(ETH_P_802_2))
436 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
437 len = skb->len;
438 netif_rx(skb);
439 break;
440 case QETH_HEADER_TYPE_OSN:
441 skb_push(skb, sizeof(struct qeth_hdr));
442 skb_copy_to_linear_data(skb, hdr,
443 sizeof(struct qeth_hdr));
444 len = skb->len;
445 card->osn_info.data_cb(skb);
446 break;
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->dev->last_rx = jiffies;
454 card->stats.rx_packets++;
455 card->stats.rx_bytes += len;
456 }
457 }
458
459 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
460 enum qeth_ipa_cmds ipacmd,
461 int (*reply_cb) (struct qeth_card *,
462 struct qeth_reply*,
463 unsigned long))
464 {
465 struct qeth_ipa_cmd *cmd;
466 struct qeth_cmd_buffer *iob;
467
468 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
469 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
470 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
471 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
472 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
473 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
474 }
475
476 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
477 struct qeth_reply *reply,
478 unsigned long data)
479 {
480 struct qeth_ipa_cmd *cmd;
481
482 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
483 cmd = (struct qeth_ipa_cmd *) data;
484 if (cmd->hdr.return_code) {
485 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
486 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
487 cmd->hdr.return_code = -EIO;
488 } else {
489 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
490 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
491 OSA_ADDR_LEN);
492 PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
493 "successfully registered on device %s\n",
494 card->dev->dev_addr[0], card->dev->dev_addr[1],
495 card->dev->dev_addr[2], card->dev->dev_addr[3],
496 card->dev->dev_addr[4], card->dev->dev_addr[5],
497 card->dev->name);
498 }
499 return 0;
500 }
501
502 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
503 {
504 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
505 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
506 qeth_l2_send_setmac_cb);
507 }
508
509 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
510 struct qeth_reply *reply,
511 unsigned long data)
512 {
513 struct qeth_ipa_cmd *cmd;
514
515 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
516 cmd = (struct qeth_ipa_cmd *) data;
517 if (cmd->hdr.return_code) {
518 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
519 cmd->hdr.return_code = -EIO;
520 return 0;
521 }
522 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
523
524 return 0;
525 }
526
527 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
528 {
529 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
530 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
531 return 0;
532 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
533 qeth_l2_send_delmac_cb);
534 }
535
536 static int qeth_l2_request_initial_mac(struct qeth_card *card)
537 {
538 int rc = 0;
539 char vendor_pre[] = {0x02, 0x00, 0x00};
540
541 QETH_DBF_TEXT(SETUP, 2, "doL2init");
542 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
543
544 rc = qeth_query_setadapterparms(card);
545 if (rc) {
546 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
547 "device %s: x%x\n", CARD_BUS_ID(card), rc);
548 }
549
550 if (card->info.guestlan) {
551 rc = qeth_setadpparms_change_macaddr(card);
552 if (rc) {
553 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
554 "device %s: x%x\n", CARD_BUS_ID(card), rc);
555 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
556 return rc;
557 }
558 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
559 } else {
560 random_ether_addr(card->dev->dev_addr);
561 memcpy(card->dev->dev_addr, vendor_pre, 3);
562 }
563 return 0;
564 }
565
566 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
567 {
568 struct sockaddr *addr = p;
569 struct qeth_card *card = netdev_priv(dev);
570 int rc = 0;
571
572 QETH_DBF_TEXT(TRACE, 3, "setmac");
573
574 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
575 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
576 return -EOPNOTSUPP;
577 }
578
579 if (card->info.type == QETH_CARD_TYPE_OSN) {
580 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
581 return -EOPNOTSUPP;
582 }
583 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
584 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
585 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
586 if (!rc)
587 rc = qeth_l2_send_setmac(card, addr->sa_data);
588 return rc;
589 }
590
591 static void qeth_l2_set_multicast_list(struct net_device *dev)
592 {
593 struct qeth_card *card = netdev_priv(dev);
594 struct dev_mc_list *dm;
595
596 if (card->info.type == QETH_CARD_TYPE_OSN)
597 return ;
598
599 QETH_DBF_TEXT(TRACE, 3, "setmulti");
600 qeth_l2_del_all_mc(card);
601 spin_lock_bh(&card->mclock);
602 for (dm = dev->mc_list; dm; dm = dm->next)
603 qeth_l2_add_mc(card, dm->dmi_addr);
604 spin_unlock_bh(&card->mclock);
605 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
606 return;
607 qeth_setadp_promisc_mode(card);
608 }
609
610 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
611 {
612 int rc;
613 struct qeth_hdr *hdr = NULL;
614 int elements = 0;
615 struct qeth_card *card = netdev_priv(dev);
616 struct sk_buff *new_skb = skb;
617 int ipv = qeth_get_ip_version(skb);
618 int cast_type = qeth_get_cast_type(card, skb);
619 struct qeth_qdio_out_q *queue = card->qdio.out_qs
620 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
621 int tx_bytes = skb->len;
622 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
623 struct qeth_eddp_context *ctx = NULL;
624
625 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
626 card->stats.tx_carrier_errors++;
627 goto tx_drop;
628 }
629
630 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
631 (skb->protocol == htons(ETH_P_IPV6)))
632 goto tx_drop;
633
634 if (card->options.performance_stats) {
635 card->perf_stats.outbound_cnt++;
636 card->perf_stats.outbound_start_time = qeth_get_micros();
637 }
638 netif_stop_queue(dev);
639
640 if (skb_is_gso(skb))
641 large_send = QETH_LARGE_SEND_EDDP;
642
643 if (card->info.type == QETH_CARD_TYPE_OSN)
644 hdr = (struct qeth_hdr *)skb->data;
645 else {
646 /* create a clone with writeable headroom */
647 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr));
648 if (!new_skb)
649 goto tx_drop;
650 hdr = (struct qeth_hdr *)skb_push(new_skb,
651 sizeof(struct qeth_hdr));
652 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
653 }
654
655 if (large_send == QETH_LARGE_SEND_EDDP) {
656 ctx = qeth_eddp_create_context(card, new_skb, hdr,
657 skb->sk->sk_protocol);
658 if (ctx == NULL) {
659 QETH_DBF_MESSAGE(2, "could not create eddp context\n");
660 goto tx_drop;
661 }
662 } else {
663 elements = qeth_get_elements_no(card, (void *)hdr, new_skb, 0);
664 if (!elements)
665 goto tx_drop;
666 }
667
668 if ((large_send == QETH_LARGE_SEND_NO) &&
669 (skb->ip_summed == CHECKSUM_PARTIAL))
670 qeth_tx_csum(new_skb);
671
672 if (card->info.type != QETH_CARD_TYPE_IQD)
673 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
674 elements, ctx);
675 else
676 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
677 elements, ctx);
678 if (!rc) {
679 card->stats.tx_packets++;
680 card->stats.tx_bytes += tx_bytes;
681 if (new_skb != skb)
682 dev_kfree_skb_any(skb);
683 if (card->options.performance_stats) {
684 if (large_send != QETH_LARGE_SEND_NO) {
685 card->perf_stats.large_send_bytes += tx_bytes;
686 card->perf_stats.large_send_cnt++;
687 }
688 if (skb_shinfo(new_skb)->nr_frags > 0) {
689 card->perf_stats.sg_skbs_sent++;
690 /* nr_frags + skb->data */
691 card->perf_stats.sg_frags_sent +=
692 skb_shinfo(new_skb)->nr_frags + 1;
693 }
694 }
695
696 if (ctx != NULL) {
697 qeth_eddp_put_context(ctx);
698 dev_kfree_skb_any(new_skb);
699 }
700 } else {
701 if (ctx != NULL)
702 qeth_eddp_put_context(ctx);
703
704 if (rc == -EBUSY) {
705 if (new_skb != skb)
706 dev_kfree_skb_any(new_skb);
707 return NETDEV_TX_BUSY;
708 } else
709 goto tx_drop;
710 }
711
712 netif_wake_queue(dev);
713 if (card->options.performance_stats)
714 card->perf_stats.outbound_time += qeth_get_micros() -
715 card->perf_stats.outbound_start_time;
716 return rc;
717
718 tx_drop:
719 card->stats.tx_dropped++;
720 card->stats.tx_errors++;
721 if ((new_skb != skb) && new_skb)
722 dev_kfree_skb_any(new_skb);
723 dev_kfree_skb_any(skb);
724 return NETDEV_TX_OK;
725 }
726
727 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
728 unsigned int status, unsigned int qdio_err,
729 unsigned int siga_err, unsigned int queue,
730 int first_element, int count, unsigned long card_ptr)
731 {
732 struct net_device *net_dev;
733 struct qeth_card *card;
734 struct qeth_qdio_buffer *buffer;
735 int index;
736 int i;
737
738 card = (struct qeth_card *) card_ptr;
739 net_dev = card->dev;
740 if (card->options.performance_stats) {
741 card->perf_stats.inbound_cnt++;
742 card->perf_stats.inbound_start_time = qeth_get_micros();
743 }
744 if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
745 if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
746 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
747 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
748 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
749 count);
750 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", queue, status);
751 qeth_schedule_recovery(card);
752 return;
753 }
754 }
755 for (i = first_element; i < (first_element + count); ++i) {
756 index = i % QDIO_MAX_BUFFERS_PER_Q;
757 buffer = &card->qdio.in_q->bufs[index];
758 if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
759 qeth_check_qdio_errors(buffer->buffer,
760 qdio_err, siga_err, "qinerr")))
761 qeth_l2_process_inbound_buffer(card, buffer, index);
762 /* clear buffer and give back to hardware */
763 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
764 qeth_queue_input_buffer(card, index);
765 }
766 if (card->options.performance_stats)
767 card->perf_stats.inbound_time += qeth_get_micros() -
768 card->perf_stats.inbound_start_time;
769 }
770
771 static int qeth_l2_open(struct net_device *dev)
772 {
773 struct qeth_card *card = netdev_priv(dev);
774
775 QETH_DBF_TEXT(TRACE, 4, "qethopen");
776 if (card->state != CARD_STATE_SOFTSETUP)
777 return -ENODEV;
778
779 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
780 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
781 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
782 return -EPERM;
783 }
784 card->data.state = CH_STATE_UP;
785 card->state = CARD_STATE_UP;
786 card->dev->flags |= IFF_UP;
787 netif_start_queue(dev);
788
789 if (!card->lan_online && netif_carrier_ok(dev))
790 netif_carrier_off(dev);
791 return 0;
792 }
793
794
795 static int qeth_l2_stop(struct net_device *dev)
796 {
797 struct qeth_card *card = netdev_priv(dev);
798
799 QETH_DBF_TEXT(TRACE, 4, "qethstop");
800 netif_tx_disable(dev);
801 card->dev->flags &= ~IFF_UP;
802 if (card->state == CARD_STATE_UP)
803 card->state = CARD_STATE_SOFTSETUP;
804 return 0;
805 }
806
807 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
808 {
809 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
810
811 INIT_LIST_HEAD(&card->vid_list);
812 INIT_LIST_HEAD(&card->mc_list);
813 card->options.layer2 = 1;
814 card->discipline.input_handler = (qdio_handler_t *)
815 qeth_l2_qdio_input_handler;
816 card->discipline.output_handler = (qdio_handler_t *)
817 qeth_qdio_output_handler;
818 card->discipline.recover = qeth_l2_recover;
819 return 0;
820 }
821
822 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
823 {
824 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
825
826 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
827
828 if (cgdev->state == CCWGROUP_ONLINE) {
829 card->use_hard_stop = 1;
830 qeth_l2_set_offline(cgdev);
831 }
832
833 if (card->dev) {
834 unregister_netdev(card->dev);
835 card->dev = NULL;
836 }
837
838 qeth_l2_del_all_mc(card);
839 return;
840 }
841
842 static int qeth_l2_ethtool_set_tso(struct net_device *dev, u32 data)
843 {
844 struct qeth_card *card = netdev_priv(dev);
845
846 if (data) {
847 if (card->options.large_send == QETH_LARGE_SEND_NO) {
848 card->options.large_send = QETH_LARGE_SEND_EDDP;
849 dev->features |= NETIF_F_TSO;
850 }
851 } else {
852 dev->features &= ~NETIF_F_TSO;
853 card->options.large_send = QETH_LARGE_SEND_NO;
854 }
855 return 0;
856 }
857
858 static struct ethtool_ops qeth_l2_ethtool_ops = {
859 .get_link = ethtool_op_get_link,
860 .get_tx_csum = ethtool_op_get_tx_csum,
861 .set_tx_csum = ethtool_op_set_tx_hw_csum,
862 .get_sg = ethtool_op_get_sg,
863 .set_sg = ethtool_op_set_sg,
864 .get_tso = ethtool_op_get_tso,
865 .set_tso = qeth_l2_ethtool_set_tso,
866 .get_strings = qeth_core_get_strings,
867 .get_ethtool_stats = qeth_core_get_ethtool_stats,
868 .get_stats_count = qeth_core_get_stats_count,
869 .get_drvinfo = qeth_core_get_drvinfo,
870 .get_settings = qeth_core_ethtool_get_settings,
871 };
872
873 static struct ethtool_ops qeth_l2_osn_ops = {
874 .get_strings = qeth_core_get_strings,
875 .get_ethtool_stats = qeth_core_get_ethtool_stats,
876 .get_stats_count = qeth_core_get_stats_count,
877 .get_drvinfo = qeth_core_get_drvinfo,
878 };
879
880 static int qeth_l2_setup_netdev(struct qeth_card *card)
881 {
882 switch (card->info.type) {
883 case QETH_CARD_TYPE_OSAE:
884 card->dev = alloc_etherdev(0);
885 break;
886 case QETH_CARD_TYPE_IQD:
887 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
888 break;
889 case QETH_CARD_TYPE_OSN:
890 card->dev = alloc_netdev(0, "osn%d", ether_setup);
891 card->dev->flags |= IFF_NOARP;
892 break;
893 default:
894 card->dev = alloc_etherdev(0);
895 }
896
897 if (!card->dev)
898 return -ENODEV;
899
900 card->dev->priv = card;
901 card->dev->tx_timeout = &qeth_tx_timeout;
902 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
903 card->dev->open = qeth_l2_open;
904 card->dev->stop = qeth_l2_stop;
905 card->dev->hard_start_xmit = qeth_l2_hard_start_xmit;
906 card->dev->do_ioctl = qeth_l2_do_ioctl;
907 card->dev->get_stats = qeth_get_stats;
908 card->dev->change_mtu = qeth_change_mtu;
909 card->dev->set_multicast_list = qeth_l2_set_multicast_list;
910 card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid;
911 card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid;
912 card->dev->set_mac_address = qeth_l2_set_mac_address;
913 card->dev->mtu = card->info.initial_mtu;
914 if (card->info.type != QETH_CARD_TYPE_OSN)
915 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
916 else
917 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
918 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
919 card->info.broadcast_capable = 1;
920 qeth_l2_request_initial_mac(card);
921 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
922 return register_netdev(card->dev);
923 }
924
925 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
926 {
927 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
928 int rc = 0;
929 enum qeth_card_states recover_flag;
930
931 BUG_ON(!card);
932 QETH_DBF_TEXT(SETUP, 2, "setonlin");
933 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
934
935 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
936 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) {
937 PRINT_WARN("set_online of card %s interrupted by user!\n",
938 CARD_BUS_ID(card));
939 return -ERESTARTSYS;
940 }
941
942 recover_flag = card->state;
943 rc = ccw_device_set_online(CARD_RDEV(card));
944 if (rc) {
945 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
946 return -EIO;
947 }
948 rc = ccw_device_set_online(CARD_WDEV(card));
949 if (rc) {
950 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
951 return -EIO;
952 }
953 rc = ccw_device_set_online(CARD_DDEV(card));
954 if (rc) {
955 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
956 return -EIO;
957 }
958
959 rc = qeth_core_hardsetup_card(card);
960 if (rc) {
961 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
962 goto out_remove;
963 }
964
965 if (!card->dev && qeth_l2_setup_netdev(card))
966 goto out_remove;
967
968 if (card->info.type != QETH_CARD_TYPE_OSN)
969 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
970
971 card->state = CARD_STATE_HARDSETUP;
972 qeth_print_status_message(card);
973
974 /* softsetup */
975 QETH_DBF_TEXT(SETUP, 2, "softsetp");
976
977 rc = qeth_send_startlan(card);
978 if (rc) {
979 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
980 if (rc == 0xe080) {
981 PRINT_WARN("LAN on card %s if offline! "
982 "Waiting for STARTLAN from card.\n",
983 CARD_BUS_ID(card));
984 card->lan_online = 0;
985 }
986 return rc;
987 } else
988 card->lan_online = 1;
989
990 if (card->info.type != QETH_CARD_TYPE_OSN) {
991 qeth_set_large_send(card, card->options.large_send);
992 qeth_l2_process_vlans(card, 0);
993 }
994
995 netif_tx_disable(card->dev);
996
997 rc = qeth_init_qdio_queues(card);
998 if (rc) {
999 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1000 goto out_remove;
1001 }
1002 card->state = CARD_STATE_SOFTSETUP;
1003 netif_carrier_on(card->dev);
1004
1005 qeth_set_allowed_threads(card, 0xffffffff, 0);
1006 if (recover_flag == CARD_STATE_RECOVER) {
1007 if (recovery_mode &&
1008 card->info.type != QETH_CARD_TYPE_OSN) {
1009 qeth_l2_open(card->dev);
1010 } else {
1011 rtnl_lock();
1012 dev_open(card->dev);
1013 rtnl_unlock();
1014 }
1015 /* this also sets saved unicast addresses */
1016 qeth_l2_set_multicast_list(card->dev);
1017 }
1018 /* let user_space know that device is online */
1019 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1020 return 0;
1021 out_remove:
1022 card->use_hard_stop = 1;
1023 qeth_l2_stop_card(card, 0);
1024 ccw_device_set_offline(CARD_DDEV(card));
1025 ccw_device_set_offline(CARD_WDEV(card));
1026 ccw_device_set_offline(CARD_RDEV(card));
1027 if (recover_flag == CARD_STATE_RECOVER)
1028 card->state = CARD_STATE_RECOVER;
1029 else
1030 card->state = CARD_STATE_DOWN;
1031 return -ENODEV;
1032 }
1033
1034 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1035 {
1036 return __qeth_l2_set_online(gdev, 0);
1037 }
1038
1039 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1040 int recovery_mode)
1041 {
1042 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1043 int rc = 0, rc2 = 0, rc3 = 0;
1044 enum qeth_card_states recover_flag;
1045
1046 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1047 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1048
1049 if (card->dev && netif_carrier_ok(card->dev))
1050 netif_carrier_off(card->dev);
1051 recover_flag = card->state;
1052 if (qeth_l2_stop_card(card, recovery_mode) == -ERESTARTSYS) {
1053 PRINT_WARN("Stopping card %s interrupted by user!\n",
1054 CARD_BUS_ID(card));
1055 return -ERESTARTSYS;
1056 }
1057 rc = ccw_device_set_offline(CARD_DDEV(card));
1058 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1059 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1060 if (!rc)
1061 rc = (rc2) ? rc2 : rc3;
1062 if (rc)
1063 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1064 if (recover_flag == CARD_STATE_UP)
1065 card->state = CARD_STATE_RECOVER;
1066 /* let user_space know that device is offline */
1067 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1068 return 0;
1069 }
1070
1071 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1072 {
1073 return __qeth_l2_set_offline(cgdev, 0);
1074 }
1075
1076 static int qeth_l2_recover(void *ptr)
1077 {
1078 struct qeth_card *card;
1079 int rc = 0;
1080
1081 card = (struct qeth_card *) ptr;
1082 QETH_DBF_TEXT(TRACE, 2, "recover1");
1083 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
1084 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1085 return 0;
1086 QETH_DBF_TEXT(TRACE, 2, "recover2");
1087 PRINT_WARN("Recovery of device %s started ...\n",
1088 CARD_BUS_ID(card));
1089 card->use_hard_stop = 1;
1090 __qeth_l2_set_offline(card->gdev, 1);
1091 rc = __qeth_l2_set_online(card->gdev, 1);
1092 /* don't run another scheduled recovery */
1093 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1094 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1095 if (!rc)
1096 PRINT_INFO("Device %s successfully recovered!\n",
1097 CARD_BUS_ID(card));
1098 else
1099 PRINT_INFO("Device %s could not be recovered!\n",
1100 CARD_BUS_ID(card));
1101 return 0;
1102 }
1103
1104 static int __init qeth_l2_init(void)
1105 {
1106 PRINT_INFO("register layer 2 discipline\n");
1107 return 0;
1108 }
1109
1110 static void __exit qeth_l2_exit(void)
1111 {
1112 PRINT_INFO("unregister layer 2 discipline\n");
1113 }
1114
1115 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1116 {
1117 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1118 qeth_qdio_clear_card(card, 0);
1119 qeth_clear_qdio_buffers(card);
1120 }
1121
1122 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1123 .probe = qeth_l2_probe_device,
1124 .remove = qeth_l2_remove_device,
1125 .set_online = qeth_l2_set_online,
1126 .set_offline = qeth_l2_set_offline,
1127 .shutdown = qeth_l2_shutdown,
1128 };
1129 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1130
1131 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1132 struct qeth_cmd_buffer *iob)
1133 {
1134 unsigned long flags;
1135 int rc = 0;
1136
1137 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
1138
1139 wait_event(card->wait_q,
1140 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1141 qeth_prepare_control_data(card, len, iob);
1142 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
1143 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1144 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1145 (addr_t) iob, 0, 0);
1146 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1147 if (rc) {
1148 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1149 "ccw_device_start rc = %i\n", rc);
1150 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1151 qeth_release_buffer(iob->channel, iob);
1152 atomic_set(&card->write.irq_pending, 0);
1153 wake_up(&card->wait_q);
1154 }
1155 return rc;
1156 }
1157
1158 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1159 struct qeth_cmd_buffer *iob, int data_len)
1160 {
1161 u16 s1, s2;
1162
1163 QETH_DBF_TEXT(TRACE, 4, "osndipa");
1164
1165 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1166 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1167 s2 = (u16)data_len;
1168 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1169 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1170 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1171 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1172 return qeth_osn_send_control_data(card, s1, iob);
1173 }
1174
1175 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1176 {
1177 struct qeth_cmd_buffer *iob;
1178 struct qeth_card *card;
1179 int rc;
1180
1181 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
1182 if (!dev)
1183 return -ENODEV;
1184 card = netdev_priv(dev);
1185 if (!card)
1186 return -ENODEV;
1187 if ((card->state != CARD_STATE_UP) &&
1188 (card->state != CARD_STATE_SOFTSETUP))
1189 return -ENODEV;
1190 iob = qeth_wait_for_buffer(&card->write);
1191 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1192 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1193 return rc;
1194 }
1195 EXPORT_SYMBOL(qeth_osn_assist);
1196
1197 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1198 int (*assist_cb)(struct net_device *, void *),
1199 int (*data_cb)(struct sk_buff *))
1200 {
1201 struct qeth_card *card;
1202
1203 QETH_DBF_TEXT(TRACE, 2, "osnreg");
1204 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1205 if (*dev == NULL)
1206 return -ENODEV;
1207 card = netdev_priv(*dev);
1208 if (!card)
1209 return -ENODEV;
1210 if ((assist_cb == NULL) || (data_cb == NULL))
1211 return -EINVAL;
1212 card->osn_info.assist_cb = assist_cb;
1213 card->osn_info.data_cb = data_cb;
1214 return 0;
1215 }
1216 EXPORT_SYMBOL(qeth_osn_register);
1217
1218 void qeth_osn_deregister(struct net_device *dev)
1219 {
1220 struct qeth_card *card;
1221
1222 QETH_DBF_TEXT(TRACE, 2, "osndereg");
1223 if (!dev)
1224 return;
1225 card = netdev_priv(dev);
1226 if (!card)
1227 return;
1228 card->osn_info.assist_cb = NULL;
1229 card->osn_info.data_cb = NULL;
1230 return;
1231 }
1232 EXPORT_SYMBOL(qeth_osn_deregister);
1233
1234 module_init(qeth_l2_init);
1235 module_exit(qeth_l2_exit);
1236 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1237 MODULE_DESCRIPTION("qeth layer 2 discipline");
1238 MODULE_LICENSE("GPL");
linux kernel for loongson