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qeth: set lan_online flag after a received STARTLAN
[deliverable/linux.git] / drivers / s390 / net / qeth_l2_main.c
CommitLineData
4a71df50
FB		 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#define QETH_DBF_TEXT_(name, level, text...) \
26 do { \
27 if (qeth_dbf_passes(qeth_dbf_##name, level)) { \
28 char *dbf_txt_buf = get_cpu_var(qeth_l2_dbf_txt_buf); \
29 sprintf(dbf_txt_buf, text); \
30 debug_text_event(qeth_dbf_##name, level, dbf_txt_buf); \
31 put_cpu_var(qeth_l2_dbf_txt_buf); \
32 } \
33 } while (0)
34
35static DEFINE_PER_CPU(char[256], qeth_l2_dbf_txt_buf);
36
37static int qeth_l2_set_offline(struct ccwgroup_device *);
38static int qeth_l2_stop(struct net_device *);
39static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
40static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
41 enum qeth_ipa_cmds,
42 int (*reply_cb) (struct qeth_card *,
43 struct qeth_reply*,
44 unsigned long));
45static void qeth_l2_set_multicast_list(struct net_device *);
46static int qeth_l2_recover(void *);
47
48static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
49{
50 struct qeth_card *card = netdev_priv(dev);
51 struct mii_ioctl_data *mii_data;
52 int rc = 0;
53
54 if (!card)
55 return -ENODEV;
56
57 if ((card->state != CARD_STATE_UP) &&
58 (card->state != CARD_STATE_SOFTSETUP))
59 return -ENODEV;
60
61 if (card->info.type == QETH_CARD_TYPE_OSN)
62 return -EPERM;
63
64 switch (cmd) {
65 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
66 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
67 break;
68 case SIOC_QETH_GET_CARD_TYPE:
69 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
70 !card->info.guestlan)
71 return 1;
72 return 0;
73 break;
74 case SIOCGMIIPHY:
75 mii_data = if_mii(rq);
76 mii_data->phy_id = 0;
77 break;
78 case SIOCGMIIREG:
79 mii_data = if_mii(rq);
80 if (mii_data->phy_id != 0)
81 rc = -EINVAL;
82 else
83 mii_data->val_out = qeth_mdio_read(dev,
84 mii_data->phy_id, mii_data->reg_num);
85 break;
86 default:
87 rc = -EOPNOTSUPP;
88 }
89 if (rc)
90 QETH_DBF_TEXT_(trace, 2, "ioce%d", rc);
91 return rc;
92}
93
94static int qeth_l2_verify_dev(struct net_device *dev)
95{
96 struct qeth_card *card;
97 unsigned long flags;
98 int rc = 0;
99
100 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
101 list_for_each_entry(card, &qeth_core_card_list.list, list) {
102 if (card->dev == dev) {
103 rc = QETH_REAL_CARD;
104 break;
105 }
106 }
107 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
108
109 return rc;
110}
111
112static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
113{
114 struct qeth_card *card;
115 struct net_device *ndev;
116 unsigned char *readno;
117 __u16 temp_dev_no, card_dev_no;
118 char *endp;
119 unsigned long flags;
120
121 ndev = NULL;
122 memcpy(&temp_dev_no, read_dev_no, 2);
123 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
124 list_for_each_entry(card, &qeth_core_card_list.list, list) {
125 readno = CARD_RDEV_ID(card);
126 readno += (strlen(readno) - 4);
127 card_dev_no = simple_strtoul(readno, &endp, 16);
128 if (card_dev_no == temp_dev_no) {
129 ndev = card->dev;
130 break;
131 }
132 }
133 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
134 return ndev;
135}
136
137static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
138 struct qeth_reply *reply,
139 unsigned long data)
140{
141 struct qeth_ipa_cmd *cmd;
142 __u8 *mac;
143
144 QETH_DBF_TEXT(trace, 2, "L2Sgmacb");
145 cmd = (struct qeth_ipa_cmd *) data;
146 mac = &cmd->data.setdelmac.mac[0];
147 /* MAC already registered, needed in couple/uncouple case */
148 if (cmd->hdr.return_code == 0x2005) {
149 PRINT_WARN("Group MAC %02x:%02x:%02x:%02x:%02x:%02x " \
150 "already existing on %s \n",
151 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
152 QETH_CARD_IFNAME(card));
153 cmd->hdr.return_code = 0;
154 }
155 if (cmd->hdr.return_code)
156 PRINT_ERR("Could not set group MAC " \
157 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
158 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
159 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
160 return 0;
161}
162
163static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
164{
165 QETH_DBF_TEXT(trace, 2, "L2Sgmac");
166 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
167 qeth_l2_send_setgroupmac_cb);
168}
169
170static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
171 struct qeth_reply *reply,
172 unsigned long data)
173{
174 struct qeth_ipa_cmd *cmd;
175 __u8 *mac;
176
177 QETH_DBF_TEXT(trace, 2, "L2Dgmacb");
178 cmd = (struct qeth_ipa_cmd *) data;
179 mac = &cmd->data.setdelmac.mac[0];
180 if (cmd->hdr.return_code)
181 PRINT_ERR("Could not delete group MAC " \
182 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
183 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
184 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
185 return 0;
186}
187
188static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
189{
190 QETH_DBF_TEXT(trace, 2, "L2Dgmac");
191 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
192 qeth_l2_send_delgroupmac_cb);
193}
194
195static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac)
196{
197 struct qeth_mc_mac *mc;
198
199 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
200
201 if (!mc) {
202 PRINT_ERR("no mem vor mc mac address\n");
203 return;
204 }
205
206 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
207 mc->mc_addrlen = OSA_ADDR_LEN;
208
209 if (!qeth_l2_send_setgroupmac(card, mac))
210 list_add_tail(&mc->list, &card->mc_list);
211 else
212 kfree(mc);
213}
214
215static void qeth_l2_del_all_mc(struct qeth_card *card)
216{
217 struct qeth_mc_mac *mc, *tmp;
218
219 spin_lock_bh(&card->mclock);
220 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
221 qeth_l2_send_delgroupmac(card, mc->mc_addr);
222 list_del(&mc->list);
223 kfree(mc);
224 }
225 spin_unlock_bh(&card->mclock);
226}
227
228static void qeth_l2_get_packet_type(struct qeth_card *card,
229 struct qeth_hdr *hdr, struct sk_buff *skb)
230{
231 __u16 hdr_mac;
232
233 if (!memcmp(skb->data + QETH_HEADER_SIZE,
234 skb->dev->broadcast, 6)) {
235 /* broadcast? */
236 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
237 return;
238 }
239 hdr_mac = *((__u16 *)skb->data);
240 /* tr multicast? */
241 switch (card->info.link_type) {
242 case QETH_LINK_TYPE_HSTR:
243 case QETH_LINK_TYPE_LANE_TR:
244 if ((hdr_mac == QETH_TR_MAC_NC) ||
245 (hdr_mac == QETH_TR_MAC_C))
246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
247 else
248 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
249 break;
250 /* eth or so multicast? */
251 default:
252 if ((hdr_mac == QETH_ETH_MAC_V4) ||
253 (hdr_mac == QETH_ETH_MAC_V6))
254 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
255 else
256 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
257 }
258}
259
260static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
261 struct sk_buff *skb, int ipv, int cast_type)
262{
263 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)((skb->data) +
264 QETH_HEADER_SIZE);
265
266 memset(hdr, 0, sizeof(struct qeth_hdr));
267 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
268
269 /* set byte byte 3 to casting flags */
270 if (cast_type == RTN_MULTICAST)
271 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
272 else if (cast_type == RTN_BROADCAST)
273 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
274 else
275 qeth_l2_get_packet_type(card, hdr, skb);
276
277 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
278 /* VSWITCH relies on the VLAN
279 * information to be present in
280 * the QDIO header */
281 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
282 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
283 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
284 }
285}
286
287static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
288 struct qeth_reply *reply, unsigned long data)
289{
290 struct qeth_ipa_cmd *cmd;
291
292 QETH_DBF_TEXT(trace, 2, "L2sdvcb");
293 cmd = (struct qeth_ipa_cmd *) data;
294 if (cmd->hdr.return_code) {
295 PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. "
296 "Continuing\n", cmd->data.setdelvlan.vlan_id,
297 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
298 QETH_DBF_TEXT_(trace, 2, "L2VL%4x", cmd->hdr.command);
299 QETH_DBF_TEXT_(trace, 2, "L2%s", CARD_BUS_ID(card));
300 QETH_DBF_TEXT_(trace, 2, "err%d", cmd->hdr.return_code);
301 }
302 return 0;
303}
304
305static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
306 enum qeth_ipa_cmds ipacmd)
307{
308 struct qeth_ipa_cmd *cmd;
309 struct qeth_cmd_buffer *iob;
310
311 QETH_DBF_TEXT_(trace, 4, "L2sdv%x", ipacmd);
312 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
313 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
314 cmd->data.setdelvlan.vlan_id = i;
315 return qeth_send_ipa_cmd(card, iob,
316 qeth_l2_send_setdelvlan_cb, NULL);
317}
318
319static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
320{
321 struct qeth_vlan_vid *id;
322 QETH_DBF_TEXT(trace, 3, "L2prcvln");
323 spin_lock_bh(&card->vlanlock);
324 list_for_each_entry(id, &card->vid_list, list) {
325 if (clear)
326 qeth_l2_send_setdelvlan(card, id->vid,
327 IPA_CMD_DELVLAN);
328 else
329 qeth_l2_send_setdelvlan(card, id->vid,
330 IPA_CMD_SETVLAN);
331 }
332 spin_unlock_bh(&card->vlanlock);
333}
334
335static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
336{
337 struct qeth_card *card = netdev_priv(dev);
338 struct qeth_vlan_vid *id;
339
340 QETH_DBF_TEXT_(trace, 4, "aid:%d", vid);
341 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
342 if (id) {
343 id->vid = vid;
344 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
345 spin_lock_bh(&card->vlanlock);
346 list_add_tail(&id->list, &card->vid_list);
347 spin_unlock_bh(&card->vlanlock);
348 } else {
349 PRINT_ERR("no memory for vid\n");
350 }
351}
352
353static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
354{
355 struct qeth_vlan_vid *id, *tmpid = NULL;
356 struct qeth_card *card = netdev_priv(dev);
357
358 QETH_DBF_TEXT_(trace, 4, "kid:%d", vid);
359 spin_lock_bh(&card->vlanlock);
360 list_for_each_entry(id, &card->vid_list, list) {
361 if (id->vid == vid) {
362 list_del(&id->list);
363 tmpid = id;
364 break;
365 }
366 }
367 spin_unlock_bh(&card->vlanlock);
368 if (tmpid) {
369 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
370 kfree(tmpid);
371 }
372 qeth_l2_set_multicast_list(card->dev);
373}
374
375static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
376{
377 int rc = 0;
378
379 QETH_DBF_TEXT(setup , 2, "stopcard");
380 QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
381
382 qeth_set_allowed_threads(card, 0, 1);
383 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
384 return -ERESTARTSYS;
385 if (card->read.state == CH_STATE_UP &&
386 card->write.state == CH_STATE_UP &&
387 (card->state == CARD_STATE_UP)) {
388 if (recovery_mode &&
389 card->info.type != QETH_CARD_TYPE_OSN) {
390 qeth_l2_stop(card->dev);
391 } else {
392 rtnl_lock();
393 dev_close(card->dev);
394 rtnl_unlock();
395 }
396 if (!card->use_hard_stop) {
397 __u8 *mac = &card->dev->dev_addr[0];
398 rc = qeth_l2_send_delmac(card, mac);
399 QETH_DBF_TEXT_(setup, 2, "Lerr%d", rc);
400 }
401 card->state = CARD_STATE_SOFTSETUP;
402 }
403 if (card->state == CARD_STATE_SOFTSETUP) {
404 qeth_l2_process_vlans(card, 1);
405 qeth_l2_del_all_mc(card);
406 qeth_clear_ipacmd_list(card);
407 card->state = CARD_STATE_HARDSETUP;
408 }
409 if (card->state == CARD_STATE_HARDSETUP) {
410 qeth_qdio_clear_card(card, 0);
411 qeth_clear_qdio_buffers(card);
412 qeth_clear_working_pool_list(card);
413 card->state = CARD_STATE_DOWN;
414 }
415 if (card->state == CARD_STATE_DOWN) {
416 qeth_clear_cmd_buffers(&card->read);
417 qeth_clear_cmd_buffers(&card->write);
418 }
419 card->use_hard_stop = 0;
420 return rc;
421}
422
423static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
424 struct qeth_qdio_buffer *buf, int index)
425{
426 struct qdio_buffer_element *element;
427 struct sk_buff *skb;
428 struct qeth_hdr *hdr;
429 int offset;
430 unsigned int len;
431
432 /* get first element of current buffer */
433 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
434 offset = 0;
435 if (card->options.performance_stats)
436 card->perf_stats.bufs_rec++;
437 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
438 &offset, &hdr))) {
439 skb->dev = card->dev;
440 /* is device UP ? */
441 if (!(card->dev->flags & IFF_UP)) {
442 dev_kfree_skb_any(skb);
443 continue;
444 }
445
446 switch (hdr->hdr.l2.id) {
447 case QETH_HEADER_TYPE_LAYER2:
448 skb->pkt_type = PACKET_HOST;
449 skb->protocol = eth_type_trans(skb, skb->dev);
450 if (card->options.checksum_type == NO_CHECKSUMMING)
451 skb->ip_summed = CHECKSUM_UNNECESSARY;
452 else
453 skb->ip_summed = CHECKSUM_NONE;
454 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
455 len = skb->len;
456 netif_rx(skb);
457 break;
458 case QETH_HEADER_TYPE_OSN:
459 skb_push(skb, sizeof(struct qeth_hdr));
460 skb_copy_to_linear_data(skb, hdr,
461 sizeof(struct qeth_hdr));
462 len = skb->len;
463 card->osn_info.data_cb(skb);
464 break;
465 default:
466 dev_kfree_skb_any(skb);
467 QETH_DBF_TEXT(trace, 3, "inbunkno");
468 QETH_DBF_HEX(control, 3, hdr, QETH_DBF_CONTROL_LEN);
469 continue;
470 }
471 card->dev->last_rx = jiffies;
472 card->stats.rx_packets++;
473 card->stats.rx_bytes += len;
474 }
475}
476
477static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
478 enum qeth_ipa_cmds ipacmd,
479 int (*reply_cb) (struct qeth_card *,
480 struct qeth_reply*,
481 unsigned long))
482{
483 struct qeth_ipa_cmd *cmd;
484 struct qeth_cmd_buffer *iob;
485
486 QETH_DBF_TEXT(trace, 2, "L2sdmac");
487 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
488 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
489 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
490 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
491 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
492}
493
494static int qeth_l2_send_setmac_cb(struct qeth_card *card,
495 struct qeth_reply *reply,
496 unsigned long data)
497{
498 struct qeth_ipa_cmd *cmd;
499
500 QETH_DBF_TEXT(trace, 2, "L2Smaccb");
501 cmd = (struct qeth_ipa_cmd *) data;
502 if (cmd->hdr.return_code) {
503 QETH_DBF_TEXT_(trace, 2, "L2er%x", cmd->hdr.return_code);
504 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
505 cmd->hdr.return_code = -EIO;
506 } else {
507 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
508 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
509 OSA_ADDR_LEN);
510 PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
511 "successfully registered on device %s\n",
512 card->dev->dev_addr[0], card->dev->dev_addr[1],
513 card->dev->dev_addr[2], card->dev->dev_addr[3],
514 card->dev->dev_addr[4], card->dev->dev_addr[5],
515 card->dev->name);
516 }
517 return 0;
518}
519
520static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
521{
522 QETH_DBF_TEXT(trace, 2, "L2Setmac");
523 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
524 qeth_l2_send_setmac_cb);
525}
526
527static int qeth_l2_send_delmac_cb(struct qeth_card *card,
528 struct qeth_reply *reply,
529 unsigned long data)
530{
531 struct qeth_ipa_cmd *cmd;
532
533 QETH_DBF_TEXT(trace, 2, "L2Dmaccb");
534 cmd = (struct qeth_ipa_cmd *) data;
535 if (cmd->hdr.return_code) {
536 QETH_DBF_TEXT_(trace, 2, "err%d", cmd->hdr.return_code);
537 cmd->hdr.return_code = -EIO;
538 return 0;
539 }
540 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
541
542 return 0;
543}
544
545static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
546{
547 QETH_DBF_TEXT(trace, 2, "L2Delmac");
548 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
549 return 0;
550 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
551 qeth_l2_send_delmac_cb);
552}
553
554static int qeth_l2_request_initial_mac(struct qeth_card *card)
555{
556 int rc = 0;
557 char vendor_pre[] = {0x02, 0x00, 0x00};
558
559 QETH_DBF_TEXT(setup, 2, "doL2init");
560 QETH_DBF_TEXT_(setup, 2, "doL2%s", CARD_BUS_ID(card));
561
562 rc = qeth_query_setadapterparms(card);
563 if (rc) {
564 PRINT_WARN("could not query adapter parameters on device %s: "
565 "x%x\n", CARD_BUS_ID(card), rc);
566 }
567
568 if (card->info.guestlan) {
569 rc = qeth_setadpparms_change_macaddr(card);
570 if (rc) {
571 PRINT_WARN("couldn't get MAC address on "
572 "device %s: x%x\n",
573 CARD_BUS_ID(card), rc);
574 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
575 return rc;
576 }
577 QETH_DBF_HEX(setup, 2, card->dev->dev_addr, OSA_ADDR_LEN);
578 } else {
579 random_ether_addr(card->dev->dev_addr);
580 memcpy(card->dev->dev_addr, vendor_pre, 3);
581 }
582 return 0;
583}
584
585static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
586{
587 struct sockaddr *addr = p;
588 struct qeth_card *card = netdev_priv(dev);
589 int rc = 0;
590
591 QETH_DBF_TEXT(trace, 3, "setmac");
592
593 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
594 QETH_DBF_TEXT(trace, 3, "setmcINV");
595 return -EOPNOTSUPP;
596 }
597
598 if (card->info.type == QETH_CARD_TYPE_OSN) {
599 PRINT_WARN("Setting MAC address on %s is not supported.\n",
600 dev->name);
601 QETH_DBF_TEXT(trace, 3, "setmcOSN");
602 return -EOPNOTSUPP;
603 }
604 QETH_DBF_TEXT_(trace, 3, "%s", CARD_BUS_ID(card));
605 QETH_DBF_HEX(trace, 3, addr->sa_data, OSA_ADDR_LEN);
606 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
607 if (!rc)
608 rc = qeth_l2_send_setmac(card, addr->sa_data);
609 return rc;
610}
611
612static void qeth_l2_set_multicast_list(struct net_device *dev)
613{
614 struct qeth_card *card = netdev_priv(dev);
615 struct dev_mc_list *dm;
616
617 if (card->info.type == QETH_CARD_TYPE_OSN)
618 return ;
619
620 QETH_DBF_TEXT(trace, 3, "setmulti");
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->dmi_addr);
625 spin_unlock_bh(&card->mclock);
626 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
627 return;
628 qeth_setadp_promisc_mode(card);
629}
630
631static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
632{
633 int rc;
634 struct qeth_hdr *hdr = NULL;
635 int elements = 0;
636 struct qeth_card *card = netdev_priv(dev);
637 struct sk_buff *new_skb = skb;
638 int ipv = qeth_get_ip_version(skb);
639 int cast_type = qeth_get_cast_type(card, skb);
640 struct qeth_qdio_out_q *queue = card->qdio.out_qs
641 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
642 int tx_bytes = skb->len;
643 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
644 struct qeth_eddp_context *ctx = NULL;
645
646 QETH_DBF_TEXT(trace, 6, "l2xmit");
647
648 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
649 card->stats.tx_carrier_errors++;
650 goto tx_drop;
651 }
652
653 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
654 (skb->protocol == htons(ETH_P_IPV6)))
655 goto tx_drop;
656
657 if (card->options.performance_stats) {
658 card->perf_stats.outbound_cnt++;
659 card->perf_stats.outbound_start_time = qeth_get_micros();
660 }
661 netif_stop_queue(dev);
662
663 if (skb_is_gso(skb))
664 large_send = QETH_LARGE_SEND_EDDP;
665
666 if (card->info.type == QETH_CARD_TYPE_OSN)
667 hdr = (struct qeth_hdr *)skb->data;
668 else {
669 new_skb = qeth_prepare_skb(card, skb, &hdr);
670 if (!new_skb)
671 goto tx_drop;
672 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
673 }
674
675 if (large_send == QETH_LARGE_SEND_EDDP) {
676 ctx = qeth_eddp_create_context(card, new_skb, hdr,
677 skb->sk->sk_protocol);
678 if (ctx == NULL) {
679 PRINT_WARN("could not create eddp context\n");
680 goto tx_drop;
681 }
682 } else {
683 elements = qeth_get_elements_no(card, (void *)hdr, new_skb, 0);
684 if (!elements)
685 goto tx_drop;
686 }
687
688 if ((large_send == QETH_LARGE_SEND_NO) &&
689 (skb->ip_summed == CHECKSUM_PARTIAL))
690 qeth_tx_csum(new_skb);
691
692 if (card->info.type != QETH_CARD_TYPE_IQD)
693 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
694 elements, ctx);
695 else
696 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
697 elements, ctx);
698 if (!rc) {
699 card->stats.tx_packets++;
700 card->stats.tx_bytes += tx_bytes;
701 if (new_skb != skb)
702 dev_kfree_skb_any(skb);
703 if (card->options.performance_stats) {
704 if (large_send != QETH_LARGE_SEND_NO) {
705 card->perf_stats.large_send_bytes += tx_bytes;
706 card->perf_stats.large_send_cnt++;
707 }
708 if (skb_shinfo(new_skb)->nr_frags > 0) {
709 card->perf_stats.sg_skbs_sent++;
710 /* nr_frags + skb->data */
711 card->perf_stats.sg_frags_sent +=
712 skb_shinfo(new_skb)->nr_frags + 1;
713 }
714 }
715
716 if (ctx != NULL) {
717 qeth_eddp_put_context(ctx);
718 dev_kfree_skb_any(new_skb);
719 }
720 } else {
721 if (ctx != NULL)
722 qeth_eddp_put_context(ctx);
723
724 if (rc == -EBUSY) {
725 if (new_skb != skb)
726 dev_kfree_skb_any(new_skb);
727 return NETDEV_TX_BUSY;
728 } else
729 goto tx_drop;
730 }
731
732 netif_wake_queue(dev);
733 if (card->options.performance_stats)
734 card->perf_stats.outbound_time += qeth_get_micros() -
735 card->perf_stats.outbound_start_time;
736 return rc;
737
738tx_drop:
739 card->stats.tx_dropped++;
740 card->stats.tx_errors++;
741 if ((new_skb != skb) && new_skb)
742 dev_kfree_skb_any(new_skb);
743 dev_kfree_skb_any(skb);
744 return NETDEV_TX_OK;
745}
746
747static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
748 unsigned int status, unsigned int qdio_err,
749 unsigned int siga_err, unsigned int queue,
750 int first_element, int count, unsigned long card_ptr)
751{
752 struct net_device *net_dev;
753 struct qeth_card *card;
754 struct qeth_qdio_buffer *buffer;
755 int index;
756 int i;
757
758 QETH_DBF_TEXT(trace, 6, "qdinput");
759 card = (struct qeth_card *) card_ptr;
760 net_dev = card->dev;
761 if (card->options.performance_stats) {
762 card->perf_stats.inbound_cnt++;
763 card->perf_stats.inbound_start_time = qeth_get_micros();
764 }
765 if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
766 if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
767 QETH_DBF_TEXT(trace, 1, "qdinchk");
768 QETH_DBF_TEXT_(trace, 1, "%s", CARD_BUS_ID(card));
769 QETH_DBF_TEXT_(trace, 1, "%04X%04X", first_element,
770 count);
771 QETH_DBF_TEXT_(trace, 1, "%04X%04X", queue, status);
772 qeth_schedule_recovery(card);
773 return;
774 }
775 }
776 for (i = first_element; i < (first_element + count); ++i) {
777 index = i % QDIO_MAX_BUFFERS_PER_Q;
778 buffer = &card->qdio.in_q->bufs[index];
779 if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
780 qeth_check_qdio_errors(buffer->buffer,
781 qdio_err, siga_err, "qinerr")))
782 qeth_l2_process_inbound_buffer(card, buffer, index);
783 /* clear buffer and give back to hardware */
784 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
785 qeth_queue_input_buffer(card, index);
786 }
787 if (card->options.performance_stats)
788 card->perf_stats.inbound_time += qeth_get_micros() -
789 card->perf_stats.inbound_start_time;
790}
791
792static int qeth_l2_open(struct net_device *dev)
793{
794 struct qeth_card *card = netdev_priv(dev);
795
796 QETH_DBF_TEXT(trace, 4, "qethopen");
797 if (card->state != CARD_STATE_SOFTSETUP)
798 return -ENODEV;
799
800 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
801 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
802 QETH_DBF_TEXT(trace, 4, "nomacadr");
803 return -EPERM;
804 }
805 card->data.state = CH_STATE_UP;
806 card->state = CARD_STATE_UP;
807 card->dev->flags |= IFF_UP;
808 netif_start_queue(dev);
809
810 if (!card->lan_online && netif_carrier_ok(dev))
811 netif_carrier_off(dev);
812 return 0;
813}
814
815
816static int qeth_l2_stop(struct net_device *dev)
817{
818 struct qeth_card *card = netdev_priv(dev);
819
820 QETH_DBF_TEXT(trace, 4, "qethstop");
821 netif_tx_disable(dev);
822 card->dev->flags &= ~IFF_UP;
823 if (card->state == CARD_STATE_UP)
824 card->state = CARD_STATE_SOFTSETUP;
825 return 0;
826}
827
828static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
829{
830 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
831
832 INIT_LIST_HEAD(&card->vid_list);
833 INIT_LIST_HEAD(&card->mc_list);
834 card->options.layer2 = 1;
835 card->discipline.input_handler = (qdio_handler_t *)
836 qeth_l2_qdio_input_handler;
837 card->discipline.output_handler = (qdio_handler_t *)
838 qeth_qdio_output_handler;
839 card->discipline.recover = qeth_l2_recover;
840 return 0;
841}
842
843static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
844{
845 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
846
847 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
848
849 if (cgdev->state == CCWGROUP_ONLINE) {
850 card->use_hard_stop = 1;
851 qeth_l2_set_offline(cgdev);
852 }
853
854 if (card->dev) {
855 unregister_netdev(card->dev);
856 card->dev = NULL;
857 }
858
859 qeth_l2_del_all_mc(card);
860 return;
861}
862
863static struct ethtool_ops qeth_l2_ethtool_ops = {
864 .get_link = ethtool_op_get_link,
865 .get_tx_csum = ethtool_op_get_tx_csum,
866 .set_tx_csum = ethtool_op_set_tx_hw_csum,
867 .get_sg = ethtool_op_get_sg,
868 .set_sg = ethtool_op_set_sg,
869 .get_tso = ethtool_op_get_tso,
870 .set_tso = ethtool_op_set_tso,
871 .get_strings = qeth_core_get_strings,
872 .get_ethtool_stats = qeth_core_get_ethtool_stats,
873 .get_stats_count = qeth_core_get_stats_count,
874 .get_drvinfo = qeth_core_get_drvinfo,
875};
876
877static struct ethtool_ops qeth_l2_osn_ops = {
878 .get_strings = qeth_core_get_strings,
879 .get_ethtool_stats = qeth_core_get_ethtool_stats,
880 .get_stats_count = qeth_core_get_stats_count,
881 .get_drvinfo = qeth_core_get_drvinfo,
882};
883
884static int qeth_l2_setup_netdev(struct qeth_card *card)
885{
886 switch (card->info.type) {
887 case QETH_CARD_TYPE_OSAE:
888 card->dev = alloc_etherdev(0);
889 break;
890 case QETH_CARD_TYPE_IQD:
891 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
892 break;
893 case QETH_CARD_TYPE_OSN:
894 card->dev = alloc_netdev(0, "osn%d", ether_setup);
895 card->dev->flags |= IFF_NOARP;
896 break;
897 default:
898 card->dev = alloc_etherdev(0);
899 }
900
901 if (!card->dev)
902 return -ENODEV;
903
904 card->dev->priv = card;
905 card->dev->tx_timeout = &qeth_tx_timeout;
906 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
907 card->dev->open = qeth_l2_open;
908 card->dev->stop = qeth_l2_stop;
909 card->dev->hard_start_xmit = qeth_l2_hard_start_xmit;
910 card->dev->do_ioctl = qeth_l2_do_ioctl;
911 card->dev->get_stats = qeth_get_stats;
912 card->dev->change_mtu = qeth_change_mtu;
913 card->dev->set_multicast_list = qeth_l2_set_multicast_list;
914 card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid;
915 card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid;
916 card->dev->set_mac_address = qeth_l2_set_mac_address;
917 card->dev->mtu = card->info.initial_mtu;
918 if (card->info.type != QETH_CARD_TYPE_OSN)
919 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
920 else
921 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
922 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
923 card->info.broadcast_capable = 1;
924 qeth_l2_request_initial_mac(card);
925 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
926 return register_netdev(card->dev);
927}
928
929static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
930{
931 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
932 int rc = 0;
933 enum qeth_card_states recover_flag;
934
935 BUG_ON(!card);
936 QETH_DBF_TEXT(setup, 2, "setonlin");
937 QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
938
939 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
940 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) {
941 PRINT_WARN("set_online of card %s interrupted by user!\n",
942 CARD_BUS_ID(card));
943 return -ERESTARTSYS;
944 }
945
946 recover_flag = card->state;
947 rc = ccw_device_set_online(CARD_RDEV(card));
948 if (rc) {
949 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
950 return -EIO;
951 }
952 rc = ccw_device_set_online(CARD_WDEV(card));
953 if (rc) {
954 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
955 return -EIO;
956 }
957 rc = ccw_device_set_online(CARD_DDEV(card));
958 if (rc) {
959 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
960 return -EIO;
961 }
962
963 rc = qeth_core_hardsetup_card(card);
964 if (rc) {
965 QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
966 goto out_remove;
967 }
968
969 if (!card->dev && qeth_l2_setup_netdev(card))
970 goto out_remove;
971
972 if (card->info.type != QETH_CARD_TYPE_OSN)
973 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
974
975 card->state = CARD_STATE_HARDSETUP;
976 qeth_print_status_message(card);
977
978 /* softsetup */
979 QETH_DBF_TEXT(setup, 2, "softsetp");
980
981 rc = qeth_send_startlan(card);
982 if (rc) {
983 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
984 if (rc == 0xe080) {
985 PRINT_WARN("LAN on card %s if offline! "
986 "Waiting for STARTLAN from card.\n",
987 CARD_BUS_ID(card));
988 card->lan_online = 0;
989 }
990 return rc;
991 } else
992 card->lan_online = 1;
993
994 if (card->info.type != QETH_CARD_TYPE_OSN) {
995 qeth_set_large_send(card, card->options.large_send);
996 qeth_l2_process_vlans(card, 0);
997 }
998
999 netif_tx_disable(card->dev);
1000
1001 rc = qeth_init_qdio_queues(card);
1002 if (rc) {
1003 QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
1004 goto out_remove;
1005 }
1006 card->state = CARD_STATE_SOFTSETUP;
1007 netif_carrier_on(card->dev);
1008
1009 qeth_set_allowed_threads(card, 0xffffffff, 0);
1010 if (recover_flag == CARD_STATE_RECOVER) {
1011 if (recovery_mode &&
1012 card->info.type != QETH_CARD_TYPE_OSN) {
1013 qeth_l2_open(card->dev);
1014 } else {
1015 rtnl_lock();
1016 dev_open(card->dev);
1017 rtnl_unlock();
1018 }
1019 /* this also sets saved unicast addresses */
1020 qeth_l2_set_multicast_list(card->dev);
1021 }
1022 /* let user_space know that device is online */
1023 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1024 return 0;
1025out_remove:
1026 card->use_hard_stop = 1;
1027 qeth_l2_stop_card(card, 0);
1028 ccw_device_set_offline(CARD_DDEV(card));
1029 ccw_device_set_offline(CARD_WDEV(card));
1030 ccw_device_set_offline(CARD_RDEV(card));
1031 if (recover_flag == CARD_STATE_RECOVER)
1032 card->state = CARD_STATE_RECOVER;
1033 else
1034 card->state = CARD_STATE_DOWN;
1035 return -ENODEV;
1036}
1037
1038static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1039{
1040 return __qeth_l2_set_online(gdev, 0);
1041}
1042
1043static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1044 int recovery_mode)
1045{
1046 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1047 int rc = 0, rc2 = 0, rc3 = 0;
1048 enum qeth_card_states recover_flag;
1049
1050 QETH_DBF_TEXT(setup, 3, "setoffl");
1051 QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
1052
1053 if (card->dev && netif_carrier_ok(card->dev))
1054 netif_carrier_off(card->dev);
1055 recover_flag = card->state;
1056 if (qeth_l2_stop_card(card, recovery_mode) == -ERESTARTSYS) {
1057 PRINT_WARN("Stopping card %s interrupted by user!\n",
1058 CARD_BUS_ID(card));
1059 return -ERESTARTSYS;
1060 }
1061 rc = ccw_device_set_offline(CARD_DDEV(card));
1062 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1063 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1064 if (!rc)
1065 rc = (rc2) ? rc2 : rc3;
1066 if (rc)
1067 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
1068 if (recover_flag == CARD_STATE_UP)
1069 card->state = CARD_STATE_RECOVER;
1070 /* let user_space know that device is offline */
1071 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1072 return 0;
1073}
1074
1075static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1076{
1077 return __qeth_l2_set_offline(cgdev, 0);
1078}
1079
1080static int qeth_l2_recover(void *ptr)
1081{
1082 struct qeth_card *card;
1083 int rc = 0;
1084
1085 card = (struct qeth_card *) ptr;
1086 QETH_DBF_TEXT(trace, 2, "recover1");
1087 QETH_DBF_HEX(trace, 2, &card, sizeof(void *));
1088 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1089 return 0;
1090 QETH_DBF_TEXT(trace, 2, "recover2");
1091 PRINT_WARN("Recovery of device %s started ...\n",
1092 CARD_BUS_ID(card));
1093 card->use_hard_stop = 1;
1094 __qeth_l2_set_offline(card->gdev, 1);
1095 rc = __qeth_l2_set_online(card->gdev, 1);
1096 /* don't run another scheduled recovery */
1097 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1098 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1099 if (!rc)
1100 PRINT_INFO("Device %s successfully recovered!\n",
1101 CARD_BUS_ID(card));
1102 else
1103 PRINT_INFO("Device %s could not be recovered!\n",
1104 CARD_BUS_ID(card));
1105 return 0;
1106}
1107
1108static int __init qeth_l2_init(void)
1109{
1110 PRINT_INFO("register layer 2 discipline\n");
1111 return 0;
1112}
1113
1114static void __exit qeth_l2_exit(void)
1115{
1116 PRINT_INFO("unregister layer 2 discipline\n");
1117}
1118
1119static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1120{
1121 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1122 qeth_qdio_clear_card(card, 0);
1123 qeth_clear_qdio_buffers(card);
1124}
1125
1126struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1127 .probe = qeth_l2_probe_device,
1128 .remove = qeth_l2_remove_device,
1129 .set_online = qeth_l2_set_online,
1130 .set_offline = qeth_l2_set_offline,
1131 .shutdown = qeth_l2_shutdown,
1132};
1133EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1134
1135static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1136 struct qeth_cmd_buffer *iob)
1137{
1138 unsigned long flags;
1139 int rc = 0;
1140
1141 QETH_DBF_TEXT(trace, 5, "osndctrd");
1142
1143 wait_event(card->wait_q,
1144 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1145 qeth_prepare_control_data(card, len, iob);
1146 QETH_DBF_TEXT(trace, 6, "osnoirqp");
1147 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1148 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1149 (addr_t) iob, 0, 0);
1150 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1151 if (rc) {
1152 PRINT_WARN("qeth_osn_send_control_data: "
1153 "ccw_device_start rc = %i\n", rc);
1154 QETH_DBF_TEXT_(trace, 2, " err%d", rc);
1155 qeth_release_buffer(iob->channel, iob);
1156 atomic_set(&card->write.irq_pending, 0);
1157 wake_up(&card->wait_q);
1158 }
1159 return rc;
1160}
1161
1162static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1163 struct qeth_cmd_buffer *iob, int data_len)
1164{
1165 u16 s1, s2;
1166
1167 QETH_DBF_TEXT(trace, 4, "osndipa");
1168
1169 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1170 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1171 s2 = (u16)data_len;
1172 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1173 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1174 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1175 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1176 return qeth_osn_send_control_data(card, s1, iob);
1177}
1178
1179int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1180{
1181 struct qeth_cmd_buffer *iob;
1182 struct qeth_card *card;
1183 int rc;
1184
1185 QETH_DBF_TEXT(trace, 2, "osnsdmc");
1186 if (!dev)
1187 return -ENODEV;
1188 card = netdev_priv(dev);
1189 if (!card)
1190 return -ENODEV;
1191 if ((card->state != CARD_STATE_UP) &&
1192 (card->state != CARD_STATE_SOFTSETUP))
1193 return -ENODEV;
1194 iob = qeth_wait_for_buffer(&card->write);
1195 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1196 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1197 return rc;
1198}
1199EXPORT_SYMBOL(qeth_osn_assist);
1200
1201int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1202 int (*assist_cb)(struct net_device *, void *),
1203 int (*data_cb)(struct sk_buff *))
1204{
1205 struct qeth_card *card;
1206
1207 QETH_DBF_TEXT(trace, 2, "osnreg");
1208 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1209 if (*dev == NULL)
1210 return -ENODEV;
1211 card = netdev_priv(*dev);
1212 if (!card)
1213 return -ENODEV;
1214 if ((assist_cb == NULL) || (data_cb == NULL))
1215 return -EINVAL;
1216 card->osn_info.assist_cb = assist_cb;
1217 card->osn_info.data_cb = data_cb;
1218 return 0;
1219}
1220EXPORT_SYMBOL(qeth_osn_register);
1221
1222void qeth_osn_deregister(struct net_device *dev)
1223{
1224 struct qeth_card *card;
1225
1226 QETH_DBF_TEXT(trace, 2, "osndereg");
1227 if (!dev)
1228 return;
1229 card = netdev_priv(dev);
1230 if (!card)
1231 return;
1232 card->osn_info.assist_cb = NULL;
1233 card->osn_info.data_cb = NULL;
1234 return;
1235}
1236EXPORT_SYMBOL(qeth_osn_deregister);
1237
1238module_init(qeth_l2_init);
1239module_exit(qeth_l2_exit);
1240MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1241MODULE_DESCRIPTION("qeth layer 2 discipline");
1242MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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