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qeth: layer 2 allow ethtool to set TSO
[deliverable/linux.git] / drivers / s390 / net / qeth_l2_main.c
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 unsigned char *readno;
105 __u16 temp_dev_no, card_dev_no;
106 char *endp;
107 unsigned long flags;
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 readno = CARD_RDEV_ID(card);
114 readno += (strlen(readno) - 4);
115 card_dev_no = simple_strtoul(readno, &endp, 16);
116 if (card_dev_no == temp_dev_no) {
117 ndev = card->dev;
118 break;
119 }
120 }
121 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
122 return ndev;
123 }
124
125 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
126 struct qeth_reply *reply,
127 unsigned long data)
128 {
129 struct qeth_ipa_cmd *cmd;
130 __u8 *mac;
131
132 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
133 cmd = (struct qeth_ipa_cmd *) data;
134 mac = &cmd->data.setdelmac.mac[0];
135 /* MAC already registered, needed in couple/uncouple case */
136 if (cmd->hdr.return_code == 0x2005) {
137 PRINT_WARN("Group MAC %02x:%02x:%02x:%02x:%02x:%02x " \
138 "already existing on %s \n",
139 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
140 QETH_CARD_IFNAME(card));
141 cmd->hdr.return_code = 0;
142 }
143 if (cmd->hdr.return_code)
144 PRINT_ERR("Could not set group MAC " \
145 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
146 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
147 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
148 return 0;
149 }
150
151 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
152 {
153 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
154 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
155 qeth_l2_send_setgroupmac_cb);
156 }
157
158 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
159 struct qeth_reply *reply,
160 unsigned long data)
161 {
162 struct qeth_ipa_cmd *cmd;
163 __u8 *mac;
164
165 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
166 cmd = (struct qeth_ipa_cmd *) data;
167 mac = &cmd->data.setdelmac.mac[0];
168 if (cmd->hdr.return_code)
169 PRINT_ERR("Could not delete group MAC " \
170 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
171 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
172 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
173 return 0;
174 }
175
176 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
177 {
178 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
179 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
180 qeth_l2_send_delgroupmac_cb);
181 }
182
183 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac)
184 {
185 struct qeth_mc_mac *mc;
186
187 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
188
189 if (!mc) {
190 PRINT_ERR("no mem vor mc mac address\n");
191 return;
192 }
193
194 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
195 mc->mc_addrlen = OSA_ADDR_LEN;
196
197 if (!qeth_l2_send_setgroupmac(card, mac))
198 list_add_tail(&mc->list, &card->mc_list);
199 else
200 kfree(mc);
201 }
202
203 static void qeth_l2_del_all_mc(struct qeth_card *card)
204 {
205 struct qeth_mc_mac *mc, *tmp;
206
207 spin_lock_bh(&card->mclock);
208 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
209 qeth_l2_send_delgroupmac(card, mc->mc_addr);
210 list_del(&mc->list);
211 kfree(mc);
212 }
213 spin_unlock_bh(&card->mclock);
214 }
215
216 static void qeth_l2_get_packet_type(struct qeth_card *card,
217 struct qeth_hdr *hdr, struct sk_buff *skb)
218 {
219 __u16 hdr_mac;
220
221 if (!memcmp(skb->data + QETH_HEADER_SIZE,
222 skb->dev->broadcast, 6)) {
223 /* broadcast? */
224 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
225 return;
226 }
227 hdr_mac = *((__u16 *)skb->data);
228 /* tr multicast? */
229 switch (card->info.link_type) {
230 case QETH_LINK_TYPE_HSTR:
231 case QETH_LINK_TYPE_LANE_TR:
232 if ((hdr_mac == QETH_TR_MAC_NC) ||
233 (hdr_mac == QETH_TR_MAC_C))
234 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
235 else
236 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
237 break;
238 /* eth or so multicast? */
239 default:
240 if ((hdr_mac == QETH_ETH_MAC_V4) ||
241 (hdr_mac == QETH_ETH_MAC_V6))
242 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
243 else
244 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
245 }
246 }
247
248 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
249 struct sk_buff *skb, int ipv, int cast_type)
250 {
251 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)((skb->data) +
252 QETH_HEADER_SIZE);
253
254 memset(hdr, 0, sizeof(struct qeth_hdr));
255 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
256
257 /* set byte byte 3 to casting flags */
258 if (cast_type == RTN_MULTICAST)
259 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
260 else if (cast_type == RTN_BROADCAST)
261 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
262 else
263 qeth_l2_get_packet_type(card, hdr, skb);
264
265 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
266 /* VSWITCH relies on the VLAN
267 * information to be present in
268 * the QDIO header */
269 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
270 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
271 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
272 }
273 }
274
275 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
276 struct qeth_reply *reply, unsigned long data)
277 {
278 struct qeth_ipa_cmd *cmd;
279
280 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
281 cmd = (struct qeth_ipa_cmd *) data;
282 if (cmd->hdr.return_code) {
283 PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. "
284 "Continuing\n", cmd->data.setdelvlan.vlan_id,
285 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
286 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
287 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
288 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
289 }
290 return 0;
291 }
292
293 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
294 enum qeth_ipa_cmds ipacmd)
295 {
296 struct qeth_ipa_cmd *cmd;
297 struct qeth_cmd_buffer *iob;
298
299 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
300 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
301 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
302 cmd->data.setdelvlan.vlan_id = i;
303 return qeth_send_ipa_cmd(card, iob,
304 qeth_l2_send_setdelvlan_cb, NULL);
305 }
306
307 static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
308 {
309 struct qeth_vlan_vid *id;
310 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
311 spin_lock_bh(&card->vlanlock);
312 list_for_each_entry(id, &card->vid_list, list) {
313 if (clear)
314 qeth_l2_send_setdelvlan(card, id->vid,
315 IPA_CMD_DELVLAN);
316 else
317 qeth_l2_send_setdelvlan(card, id->vid,
318 IPA_CMD_SETVLAN);
319 }
320 spin_unlock_bh(&card->vlanlock);
321 }
322
323 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
324 {
325 struct qeth_card *card = netdev_priv(dev);
326 struct qeth_vlan_vid *id;
327
328 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
329 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
330 if (id) {
331 id->vid = vid;
332 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
333 spin_lock_bh(&card->vlanlock);
334 list_add_tail(&id->list, &card->vid_list);
335 spin_unlock_bh(&card->vlanlock);
336 } else {
337 PRINT_ERR("no memory for vid\n");
338 }
339 }
340
341 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
342 {
343 struct qeth_vlan_vid *id, *tmpid = NULL;
344 struct qeth_card *card = netdev_priv(dev);
345
346 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
347 spin_lock_bh(&card->vlanlock);
348 list_for_each_entry(id, &card->vid_list, list) {
349 if (id->vid == vid) {
350 list_del(&id->list);
351 tmpid = id;
352 break;
353 }
354 }
355 spin_unlock_bh(&card->vlanlock);
356 if (tmpid) {
357 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
358 kfree(tmpid);
359 }
360 qeth_l2_set_multicast_list(card->dev);
361 }
362
363 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
364 {
365 int rc = 0;
366
367 QETH_DBF_TEXT(SETUP , 2, "stopcard");
368 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
369
370 qeth_set_allowed_threads(card, 0, 1);
371 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
372 return -ERESTARTSYS;
373 if (card->read.state == CH_STATE_UP &&
374 card->write.state == CH_STATE_UP &&
375 (card->state == CARD_STATE_UP)) {
376 if (recovery_mode &&
377 card->info.type != QETH_CARD_TYPE_OSN) {
378 qeth_l2_stop(card->dev);
379 } else {
380 rtnl_lock();
381 dev_close(card->dev);
382 rtnl_unlock();
383 }
384 if (!card->use_hard_stop) {
385 __u8 *mac = &card->dev->dev_addr[0];
386 rc = qeth_l2_send_delmac(card, mac);
387 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
388 }
389 card->state = CARD_STATE_SOFTSETUP;
390 }
391 if (card->state == CARD_STATE_SOFTSETUP) {
392 qeth_l2_process_vlans(card, 1);
393 qeth_l2_del_all_mc(card);
394 qeth_clear_ipacmd_list(card);
395 card->state = CARD_STATE_HARDSETUP;
396 }
397 if (card->state == CARD_STATE_HARDSETUP) {
398 qeth_qdio_clear_card(card, 0);
399 qeth_clear_qdio_buffers(card);
400 qeth_clear_working_pool_list(card);
401 card->state = CARD_STATE_DOWN;
402 }
403 if (card->state == CARD_STATE_DOWN) {
404 qeth_clear_cmd_buffers(&card->read);
405 qeth_clear_cmd_buffers(&card->write);
406 }
407 card->use_hard_stop = 0;
408 return rc;
409 }
410
411 static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
412 struct qeth_qdio_buffer *buf, int index)
413 {
414 struct qdio_buffer_element *element;
415 struct sk_buff *skb;
416 struct qeth_hdr *hdr;
417 int offset;
418 unsigned int len;
419
420 /* get first element of current buffer */
421 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
422 offset = 0;
423 if (card->options.performance_stats)
424 card->perf_stats.bufs_rec++;
425 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
426 &offset, &hdr))) {
427 skb->dev = card->dev;
428 /* is device UP ? */
429 if (!(card->dev->flags & IFF_UP)) {
430 dev_kfree_skb_any(skb);
431 continue;
432 }
433
434 switch (hdr->hdr.l2.id) {
435 case QETH_HEADER_TYPE_LAYER2:
436 skb->pkt_type = PACKET_HOST;
437 skb->protocol = eth_type_trans(skb, skb->dev);
438 if (card->options.checksum_type == NO_CHECKSUMMING)
439 skb->ip_summed = CHECKSUM_UNNECESSARY;
440 else
441 skb->ip_summed = CHECKSUM_NONE;
442 if (skb->protocol == htons(ETH_P_802_2))
443 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
444 len = skb->len;
445 netif_rx(skb);
446 break;
447 case QETH_HEADER_TYPE_OSN:
448 skb_push(skb, sizeof(struct qeth_hdr));
449 skb_copy_to_linear_data(skb, hdr,
450 sizeof(struct qeth_hdr));
451 len = skb->len;
452 card->osn_info.data_cb(skb);
453 break;
454 default:
455 dev_kfree_skb_any(skb);
456 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
457 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
458 continue;
459 }
460 card->dev->last_rx = jiffies;
461 card->stats.rx_packets++;
462 card->stats.rx_bytes += len;
463 }
464 }
465
466 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
467 enum qeth_ipa_cmds ipacmd,
468 int (*reply_cb) (struct qeth_card *,
469 struct qeth_reply*,
470 unsigned long))
471 {
472 struct qeth_ipa_cmd *cmd;
473 struct qeth_cmd_buffer *iob;
474
475 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
476 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
477 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
478 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
479 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
480 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
481 }
482
483 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
484 struct qeth_reply *reply,
485 unsigned long data)
486 {
487 struct qeth_ipa_cmd *cmd;
488
489 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
490 cmd = (struct qeth_ipa_cmd *) data;
491 if (cmd->hdr.return_code) {
492 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
493 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
494 cmd->hdr.return_code = -EIO;
495 } else {
496 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
497 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
498 OSA_ADDR_LEN);
499 PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
500 "successfully registered on device %s\n",
501 card->dev->dev_addr[0], card->dev->dev_addr[1],
502 card->dev->dev_addr[2], card->dev->dev_addr[3],
503 card->dev->dev_addr[4], card->dev->dev_addr[5],
504 card->dev->name);
505 }
506 return 0;
507 }
508
509 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
510 {
511 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
512 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
513 qeth_l2_send_setmac_cb);
514 }
515
516 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
517 struct qeth_reply *reply,
518 unsigned long data)
519 {
520 struct qeth_ipa_cmd *cmd;
521
522 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
523 cmd = (struct qeth_ipa_cmd *) data;
524 if (cmd->hdr.return_code) {
525 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
526 cmd->hdr.return_code = -EIO;
527 return 0;
528 }
529 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
530
531 return 0;
532 }
533
534 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
535 {
536 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
537 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
538 return 0;
539 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
540 qeth_l2_send_delmac_cb);
541 }
542
543 static int qeth_l2_request_initial_mac(struct qeth_card *card)
544 {
545 int rc = 0;
546 char vendor_pre[] = {0x02, 0x00, 0x00};
547
548 QETH_DBF_TEXT(SETUP, 2, "doL2init");
549 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
550
551 rc = qeth_query_setadapterparms(card);
552 if (rc) {
553 PRINT_WARN("could not query adapter parameters on device %s: "
554 "x%x\n", CARD_BUS_ID(card), rc);
555 }
556
557 if (card->info.guestlan) {
558 rc = qeth_setadpparms_change_macaddr(card);
559 if (rc) {
560 PRINT_WARN("couldn't get MAC address on "
561 "device %s: x%x\n",
562 CARD_BUS_ID(card), rc);
563 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
564 return rc;
565 }
566 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
567 } else {
568 random_ether_addr(card->dev->dev_addr);
569 memcpy(card->dev->dev_addr, vendor_pre, 3);
570 }
571 return 0;
572 }
573
574 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
575 {
576 struct sockaddr *addr = p;
577 struct qeth_card *card = netdev_priv(dev);
578 int rc = 0;
579
580 QETH_DBF_TEXT(TRACE, 3, "setmac");
581
582 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
583 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
584 return -EOPNOTSUPP;
585 }
586
587 if (card->info.type == QETH_CARD_TYPE_OSN) {
588 PRINT_WARN("Setting MAC address on %s is not supported.\n",
589 dev->name);
590 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
591 return -EOPNOTSUPP;
592 }
593 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
594 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
595 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
596 if (!rc)
597 rc = qeth_l2_send_setmac(card, addr->sa_data);
598 return rc;
599 }
600
601 static void qeth_l2_set_multicast_list(struct net_device *dev)
602 {
603 struct qeth_card *card = netdev_priv(dev);
604 struct dev_mc_list *dm;
605
606 if (card->info.type == QETH_CARD_TYPE_OSN)
607 return ;
608
609 QETH_DBF_TEXT(TRACE, 3, "setmulti");
610 qeth_l2_del_all_mc(card);
611 spin_lock_bh(&card->mclock);
612 for (dm = dev->mc_list; dm; dm = dm->next)
613 qeth_l2_add_mc(card, dm->dmi_addr);
614 spin_unlock_bh(&card->mclock);
615 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
616 return;
617 qeth_setadp_promisc_mode(card);
618 }
619
620 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
621 {
622 int rc;
623 struct qeth_hdr *hdr = NULL;
624 int elements = 0;
625 struct qeth_card *card = netdev_priv(dev);
626 struct sk_buff *new_skb = skb;
627 int ipv = qeth_get_ip_version(skb);
628 int cast_type = qeth_get_cast_type(card, skb);
629 struct qeth_qdio_out_q *queue = card->qdio.out_qs
630 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
631 int tx_bytes = skb->len;
632 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
633 struct qeth_eddp_context *ctx = NULL;
634
635 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
636 card->stats.tx_carrier_errors++;
637 goto tx_drop;
638 }
639
640 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
641 (skb->protocol == htons(ETH_P_IPV6)))
642 goto tx_drop;
643
644 if (card->options.performance_stats) {
645 card->perf_stats.outbound_cnt++;
646 card->perf_stats.outbound_start_time = qeth_get_micros();
647 }
648 netif_stop_queue(dev);
649
650 if (skb_is_gso(skb))
651 large_send = QETH_LARGE_SEND_EDDP;
652
653 if (card->info.type == QETH_CARD_TYPE_OSN)
654 hdr = (struct qeth_hdr *)skb->data;
655 else {
656 /* create a clone with writeable headroom */
657 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr));
658 if (!new_skb)
659 goto tx_drop;
660 hdr = (struct qeth_hdr *)skb_push(new_skb,
661 sizeof(struct qeth_hdr));
662 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
663 }
664
665 if (large_send == QETH_LARGE_SEND_EDDP) {
666 ctx = qeth_eddp_create_context(card, new_skb, hdr,
667 skb->sk->sk_protocol);
668 if (ctx == NULL) {
669 PRINT_WARN("could not create eddp context\n");
670 goto tx_drop;
671 }
672 } else {
673 elements = qeth_get_elements_no(card, (void *)hdr, new_skb, 0);
674 if (!elements)
675 goto tx_drop;
676 }
677
678 if ((large_send == QETH_LARGE_SEND_NO) &&
679 (skb->ip_summed == CHECKSUM_PARTIAL))
680 qeth_tx_csum(new_skb);
681
682 if (card->info.type != QETH_CARD_TYPE_IQD)
683 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
684 elements, ctx);
685 else
686 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
687 elements, ctx);
688 if (!rc) {
689 card->stats.tx_packets++;
690 card->stats.tx_bytes += tx_bytes;
691 if (new_skb != skb)
692 dev_kfree_skb_any(skb);
693 if (card->options.performance_stats) {
694 if (large_send != QETH_LARGE_SEND_NO) {
695 card->perf_stats.large_send_bytes += tx_bytes;
696 card->perf_stats.large_send_cnt++;
697 }
698 if (skb_shinfo(new_skb)->nr_frags > 0) {
699 card->perf_stats.sg_skbs_sent++;
700 /* nr_frags + skb->data */
701 card->perf_stats.sg_frags_sent +=
702 skb_shinfo(new_skb)->nr_frags + 1;
703 }
704 }
705
706 if (ctx != NULL) {
707 qeth_eddp_put_context(ctx);
708 dev_kfree_skb_any(new_skb);
709 }
710 } else {
711 if (ctx != NULL)
712 qeth_eddp_put_context(ctx);
713
714 if (rc == -EBUSY) {
715 if (new_skb != skb)
716 dev_kfree_skb_any(new_skb);
717 return NETDEV_TX_BUSY;
718 } else
719 goto tx_drop;
720 }
721
722 netif_wake_queue(dev);
723 if (card->options.performance_stats)
724 card->perf_stats.outbound_time += qeth_get_micros() -
725 card->perf_stats.outbound_start_time;
726 return rc;
727
728 tx_drop:
729 card->stats.tx_dropped++;
730 card->stats.tx_errors++;
731 if ((new_skb != skb) && new_skb)
732 dev_kfree_skb_any(new_skb);
733 dev_kfree_skb_any(skb);
734 return NETDEV_TX_OK;
735 }
736
737 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
738 unsigned int status, unsigned int qdio_err,
739 unsigned int siga_err, unsigned int queue,
740 int first_element, int count, unsigned long card_ptr)
741 {
742 struct net_device *net_dev;
743 struct qeth_card *card;
744 struct qeth_qdio_buffer *buffer;
745 int index;
746 int i;
747
748 card = (struct qeth_card *) card_ptr;
749 net_dev = card->dev;
750 if (card->options.performance_stats) {
751 card->perf_stats.inbound_cnt++;
752 card->perf_stats.inbound_start_time = qeth_get_micros();
753 }
754 if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
755 if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
756 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
757 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
758 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
759 count);
760 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", queue, status);
761 qeth_schedule_recovery(card);
762 return;
763 }
764 }
765 for (i = first_element; i < (first_element + count); ++i) {
766 index = i % QDIO_MAX_BUFFERS_PER_Q;
767 buffer = &card->qdio.in_q->bufs[index];
768 if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
769 qeth_check_qdio_errors(buffer->buffer,
770 qdio_err, siga_err, "qinerr")))
771 qeth_l2_process_inbound_buffer(card, buffer, index);
772 /* clear buffer and give back to hardware */
773 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
774 qeth_queue_input_buffer(card, index);
775 }
776 if (card->options.performance_stats)
777 card->perf_stats.inbound_time += qeth_get_micros() -
778 card->perf_stats.inbound_start_time;
779 }
780
781 static int qeth_l2_open(struct net_device *dev)
782 {
783 struct qeth_card *card = netdev_priv(dev);
784
785 QETH_DBF_TEXT(TRACE, 4, "qethopen");
786 if (card->state != CARD_STATE_SOFTSETUP)
787 return -ENODEV;
788
789 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
790 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
791 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
792 return -EPERM;
793 }
794 card->data.state = CH_STATE_UP;
795 card->state = CARD_STATE_UP;
796 card->dev->flags |= IFF_UP;
797 netif_start_queue(dev);
798
799 if (!card->lan_online && netif_carrier_ok(dev))
800 netif_carrier_off(dev);
801 return 0;
802 }
803
804
805 static int qeth_l2_stop(struct net_device *dev)
806 {
807 struct qeth_card *card = netdev_priv(dev);
808
809 QETH_DBF_TEXT(TRACE, 4, "qethstop");
810 netif_tx_disable(dev);
811 card->dev->flags &= ~IFF_UP;
812 if (card->state == CARD_STATE_UP)
813 card->state = CARD_STATE_SOFTSETUP;
814 return 0;
815 }
816
817 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
818 {
819 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
820
821 INIT_LIST_HEAD(&card->vid_list);
822 INIT_LIST_HEAD(&card->mc_list);
823 card->options.layer2 = 1;
824 card->discipline.input_handler = (qdio_handler_t *)
825 qeth_l2_qdio_input_handler;
826 card->discipline.output_handler = (qdio_handler_t *)
827 qeth_qdio_output_handler;
828 card->discipline.recover = qeth_l2_recover;
829 return 0;
830 }
831
832 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
833 {
834 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
835
836 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
837
838 if (cgdev->state == CCWGROUP_ONLINE) {
839 card->use_hard_stop = 1;
840 qeth_l2_set_offline(cgdev);
841 }
842
843 if (card->dev) {
844 unregister_netdev(card->dev);
845 card->dev = NULL;
846 }
847
848 qeth_l2_del_all_mc(card);
849 return;
850 }
851
852 static int qeth_l2_ethtool_set_tso(struct net_device *dev, u32 data)
853 {
854 struct qeth_card *card = netdev_priv(dev);
855
856 if (data) {
857 if (card->options.large_send == QETH_LARGE_SEND_NO) {
858 card->options.large_send = QETH_LARGE_SEND_EDDP;
859 dev->features |= NETIF_F_TSO;
860 }
861 } else {
862 dev->features &= ~NETIF_F_TSO;
863 card->options.large_send = QETH_LARGE_SEND_NO;
864 }
865 return 0;
866 }
867
868 static struct ethtool_ops qeth_l2_ethtool_ops = {
869 .get_link = ethtool_op_get_link,
870 .get_tx_csum = ethtool_op_get_tx_csum,
871 .set_tx_csum = ethtool_op_set_tx_hw_csum,
872 .get_sg = ethtool_op_get_sg,
873 .set_sg = ethtool_op_set_sg,
874 .get_tso = ethtool_op_get_tso,
875 .set_tso = qeth_l2_ethtool_set_tso,
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 .get_settings = qeth_core_ethtool_get_settings,
881 };
882
883 static struct ethtool_ops qeth_l2_osn_ops = {
884 .get_strings = qeth_core_get_strings,
885 .get_ethtool_stats = qeth_core_get_ethtool_stats,
886 .get_stats_count = qeth_core_get_stats_count,
887 .get_drvinfo = qeth_core_get_drvinfo,
888 };
889
890 static int qeth_l2_setup_netdev(struct qeth_card *card)
891 {
892 switch (card->info.type) {
893 case QETH_CARD_TYPE_OSAE:
894 card->dev = alloc_etherdev(0);
895 break;
896 case QETH_CARD_TYPE_IQD:
897 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
898 break;
899 case QETH_CARD_TYPE_OSN:
900 card->dev = alloc_netdev(0, "osn%d", ether_setup);
901 card->dev->flags |= IFF_NOARP;
902 break;
903 default:
904 card->dev = alloc_etherdev(0);
905 }
906
907 if (!card->dev)
908 return -ENODEV;
909
910 card->dev->priv = card;
911 card->dev->tx_timeout = &qeth_tx_timeout;
912 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
913 card->dev->open = qeth_l2_open;
914 card->dev->stop = qeth_l2_stop;
915 card->dev->hard_start_xmit = qeth_l2_hard_start_xmit;
916 card->dev->do_ioctl = qeth_l2_do_ioctl;
917 card->dev->get_stats = qeth_get_stats;
918 card->dev->change_mtu = qeth_change_mtu;
919 card->dev->set_multicast_list = qeth_l2_set_multicast_list;
920 card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid;
921 card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid;
922 card->dev->set_mac_address = qeth_l2_set_mac_address;
923 card->dev->mtu = card->info.initial_mtu;
924 if (card->info.type != QETH_CARD_TYPE_OSN)
925 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
926 else
927 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
928 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
929 card->info.broadcast_capable = 1;
930 qeth_l2_request_initial_mac(card);
931 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
932 return register_netdev(card->dev);
933 }
934
935 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
936 {
937 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
938 int rc = 0;
939 enum qeth_card_states recover_flag;
940
941 BUG_ON(!card);
942 QETH_DBF_TEXT(SETUP, 2, "setonlin");
943 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
944
945 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
946 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) {
947 PRINT_WARN("set_online of card %s interrupted by user!\n",
948 CARD_BUS_ID(card));
949 return -ERESTARTSYS;
950 }
951
952 recover_flag = card->state;
953 rc = ccw_device_set_online(CARD_RDEV(card));
954 if (rc) {
955 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
956 return -EIO;
957 }
958 rc = ccw_device_set_online(CARD_WDEV(card));
959 if (rc) {
960 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
961 return -EIO;
962 }
963 rc = ccw_device_set_online(CARD_DDEV(card));
964 if (rc) {
965 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
966 return -EIO;
967 }
968
969 rc = qeth_core_hardsetup_card(card);
970 if (rc) {
971 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
972 goto out_remove;
973 }
974
975 if (!card->dev && qeth_l2_setup_netdev(card))
976 goto out_remove;
977
978 if (card->info.type != QETH_CARD_TYPE_OSN)
979 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
980
981 card->state = CARD_STATE_HARDSETUP;
982 qeth_print_status_message(card);
983
984 /* softsetup */
985 QETH_DBF_TEXT(SETUP, 2, "softsetp");
986
987 rc = qeth_send_startlan(card);
988 if (rc) {
989 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
990 if (rc == 0xe080) {
991 PRINT_WARN("LAN on card %s if offline! "
992 "Waiting for STARTLAN from card.\n",
993 CARD_BUS_ID(card));
994 card->lan_online = 0;
995 }
996 return rc;
997 } else
998 card->lan_online = 1;
999
1000 if (card->info.type != QETH_CARD_TYPE_OSN) {
1001 qeth_set_large_send(card, card->options.large_send);
1002 qeth_l2_process_vlans(card, 0);
1003 }
1004
1005 netif_tx_disable(card->dev);
1006
1007 rc = qeth_init_qdio_queues(card);
1008 if (rc) {
1009 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1010 goto out_remove;
1011 }
1012 card->state = CARD_STATE_SOFTSETUP;
1013 netif_carrier_on(card->dev);
1014
1015 qeth_set_allowed_threads(card, 0xffffffff, 0);
1016 if (recover_flag == CARD_STATE_RECOVER) {
1017 if (recovery_mode &&
1018 card->info.type != QETH_CARD_TYPE_OSN) {
1019 qeth_l2_open(card->dev);
1020 } else {
1021 rtnl_lock();
1022 dev_open(card->dev);
1023 rtnl_unlock();
1024 }
1025 /* this also sets saved unicast addresses */
1026 qeth_l2_set_multicast_list(card->dev);
1027 }
1028 /* let user_space know that device is online */
1029 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1030 return 0;
1031 out_remove:
1032 card->use_hard_stop = 1;
1033 qeth_l2_stop_card(card, 0);
1034 ccw_device_set_offline(CARD_DDEV(card));
1035 ccw_device_set_offline(CARD_WDEV(card));
1036 ccw_device_set_offline(CARD_RDEV(card));
1037 if (recover_flag == CARD_STATE_RECOVER)
1038 card->state = CARD_STATE_RECOVER;
1039 else
1040 card->state = CARD_STATE_DOWN;
1041 return -ENODEV;
1042 }
1043
1044 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1045 {
1046 return __qeth_l2_set_online(gdev, 0);
1047 }
1048
1049 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1050 int recovery_mode)
1051 {
1052 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1053 int rc = 0, rc2 = 0, rc3 = 0;
1054 enum qeth_card_states recover_flag;
1055
1056 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1057 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1058
1059 if (card->dev && netif_carrier_ok(card->dev))
1060 netif_carrier_off(card->dev);
1061 recover_flag = card->state;
1062 if (qeth_l2_stop_card(card, recovery_mode) == -ERESTARTSYS) {
1063 PRINT_WARN("Stopping card %s interrupted by user!\n",
1064 CARD_BUS_ID(card));
1065 return -ERESTARTSYS;
1066 }
1067 rc = ccw_device_set_offline(CARD_DDEV(card));
1068 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1069 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1070 if (!rc)
1071 rc = (rc2) ? rc2 : rc3;
1072 if (rc)
1073 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1074 if (recover_flag == CARD_STATE_UP)
1075 card->state = CARD_STATE_RECOVER;
1076 /* let user_space know that device is offline */
1077 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1078 return 0;
1079 }
1080
1081 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1082 {
1083 return __qeth_l2_set_offline(cgdev, 0);
1084 }
1085
1086 static int qeth_l2_recover(void *ptr)
1087 {
1088 struct qeth_card *card;
1089 int rc = 0;
1090
1091 card = (struct qeth_card *) ptr;
1092 QETH_DBF_TEXT(TRACE, 2, "recover1");
1093 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
1094 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1095 return 0;
1096 QETH_DBF_TEXT(TRACE, 2, "recover2");
1097 PRINT_WARN("Recovery of device %s started ...\n",
1098 CARD_BUS_ID(card));
1099 card->use_hard_stop = 1;
1100 __qeth_l2_set_offline(card->gdev, 1);
1101 rc = __qeth_l2_set_online(card->gdev, 1);
1102 /* don't run another scheduled recovery */
1103 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1104 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1105 if (!rc)
1106 PRINT_INFO("Device %s successfully recovered!\n",
1107 CARD_BUS_ID(card));
1108 else
1109 PRINT_INFO("Device %s could not be recovered!\n",
1110 CARD_BUS_ID(card));
1111 return 0;
1112 }
1113
1114 static int __init qeth_l2_init(void)
1115 {
1116 PRINT_INFO("register layer 2 discipline\n");
1117 return 0;
1118 }
1119
1120 static void __exit qeth_l2_exit(void)
1121 {
1122 PRINT_INFO("unregister layer 2 discipline\n");
1123 }
1124
1125 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1126 {
1127 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1128 qeth_qdio_clear_card(card, 0);
1129 qeth_clear_qdio_buffers(card);
1130 }
1131
1132 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1133 .probe = qeth_l2_probe_device,
1134 .remove = qeth_l2_remove_device,
1135 .set_online = qeth_l2_set_online,
1136 .set_offline = qeth_l2_set_offline,
1137 .shutdown = qeth_l2_shutdown,
1138 };
1139 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1140
1141 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1142 struct qeth_cmd_buffer *iob)
1143 {
1144 unsigned long flags;
1145 int rc = 0;
1146
1147 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
1148
1149 wait_event(card->wait_q,
1150 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1151 qeth_prepare_control_data(card, len, iob);
1152 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
1153 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1154 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1155 (addr_t) iob, 0, 0);
1156 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1157 if (rc) {
1158 PRINT_WARN("qeth_osn_send_control_data: "
1159 "ccw_device_start rc = %i\n", rc);
1160 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1161 qeth_release_buffer(iob->channel, iob);
1162 atomic_set(&card->write.irq_pending, 0);
1163 wake_up(&card->wait_q);
1164 }
1165 return rc;
1166 }
1167
1168 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1169 struct qeth_cmd_buffer *iob, int data_len)
1170 {
1171 u16 s1, s2;
1172
1173 QETH_DBF_TEXT(TRACE, 4, "osndipa");
1174
1175 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1176 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1177 s2 = (u16)data_len;
1178 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1179 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1180 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1181 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1182 return qeth_osn_send_control_data(card, s1, iob);
1183 }
1184
1185 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1186 {
1187 struct qeth_cmd_buffer *iob;
1188 struct qeth_card *card;
1189 int rc;
1190
1191 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
1192 if (!dev)
1193 return -ENODEV;
1194 card = netdev_priv(dev);
1195 if (!card)
1196 return -ENODEV;
1197 if ((card->state != CARD_STATE_UP) &&
1198 (card->state != CARD_STATE_SOFTSETUP))
1199 return -ENODEV;
1200 iob = qeth_wait_for_buffer(&card->write);
1201 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1202 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1203 return rc;
1204 }
1205 EXPORT_SYMBOL(qeth_osn_assist);
1206
1207 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1208 int (*assist_cb)(struct net_device *, void *),
1209 int (*data_cb)(struct sk_buff *))
1210 {
1211 struct qeth_card *card;
1212
1213 QETH_DBF_TEXT(TRACE, 2, "osnreg");
1214 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1215 if (*dev == NULL)
1216 return -ENODEV;
1217 card = netdev_priv(*dev);
1218 if (!card)
1219 return -ENODEV;
1220 if ((assist_cb == NULL) || (data_cb == NULL))
1221 return -EINVAL;
1222 card->osn_info.assist_cb = assist_cb;
1223 card->osn_info.data_cb = data_cb;
1224 return 0;
1225 }
1226 EXPORT_SYMBOL(qeth_osn_register);
1227
1228 void qeth_osn_deregister(struct net_device *dev)
1229 {
1230 struct qeth_card *card;
1231
1232 QETH_DBF_TEXT(TRACE, 2, "osndereg");
1233 if (!dev)
1234 return;
1235 card = netdev_priv(dev);
1236 if (!card)
1237 return;
1238 card->osn_info.assist_cb = NULL;
1239 card->osn_info.data_cb = NULL;
1240 return;
1241 }
1242 EXPORT_SYMBOL(qeth_osn_deregister);
1243
1244 module_init(qeth_l2_init);
1245 module_exit(qeth_l2_exit);
1246 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1247 MODULE_DESCRIPTION("qeth layer 2 discipline");
1248 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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