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qeth: Use ccw_device_get_id().
[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
4a71df50
FB		 25static int qeth_l2_set_offline(struct ccwgroup_device *);
26static int qeth_l2_stop(struct net_device *);
27static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
28static 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));
33static void qeth_l2_set_multicast_list(struct net_device *);
34static int qeth_l2_recover(void *);
35
36static 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)
d11ba0c4 78 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
4a71df50
FB		 79 return rc;
80}
81
82static 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
100static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
101{
102 struct qeth_card *card;
103 struct net_device *ndev;
f06f6f32 104 __u16 temp_dev_no;
4a71df50 105 unsigned long flags;
f06f6f32 106 struct ccw_dev_id read_devid;
4a71df50
FB		 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) {
f06f6f32
CH		 112 ccw_device_get_id(CARD_RDEV(card), &read_devid);
113 if (read_devid.devno == temp_dev_no) {
4a71df50
FB		 114 ndev = card->dev;
115 break;
116 }
117 }
118 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
119 return ndev;
120}
121
122static 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
d11ba0c4 129 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
4a71df50
FB		 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 PRINT_WARN("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 PRINT_ERR("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
148static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
149{
d11ba0c4 150 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
4a71df50
FB		 151 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
152 qeth_l2_send_setgroupmac_cb);
153}
154
155static 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
d11ba0c4 162 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
4a71df50
FB		 163 cmd = (struct qeth_ipa_cmd *) data;
164 mac = &cmd->data.setdelmac.mac[0];
165 if (cmd->hdr.return_code)
166 PRINT_ERR("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
173static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
174{
d11ba0c4 175 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
4a71df50
FB		 176 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
177 qeth_l2_send_delgroupmac_cb);
178}
179
180static 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 PRINT_ERR("no mem vor mc mac address\n");
188 return;
189 }
190
191 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
192 mc->mc_addrlen = OSA_ADDR_LEN;
193
194 if (!qeth_l2_send_setgroupmac(card, mac))
195 list_add_tail(&mc->list, &card->mc_list);
196 else
197 kfree(mc);
198}
199
200static void qeth_l2_del_all_mc(struct qeth_card *card)
201{
202 struct qeth_mc_mac *mc, *tmp;
203
204 spin_lock_bh(&card->mclock);
205 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
206 qeth_l2_send_delgroupmac(card, mc->mc_addr);
207 list_del(&mc->list);
208 kfree(mc);
209 }
210 spin_unlock_bh(&card->mclock);
211}
212
213static void qeth_l2_get_packet_type(struct qeth_card *card,
214 struct qeth_hdr *hdr, struct sk_buff *skb)
215{
216 __u16 hdr_mac;
217
218 if (!memcmp(skb->data + QETH_HEADER_SIZE,
219 skb->dev->broadcast, 6)) {
220 /* broadcast? */
221 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
222 return;
223 }
224 hdr_mac = *((__u16 *)skb->data);
225 /* tr multicast? */
226 switch (card->info.link_type) {
227 case QETH_LINK_TYPE_HSTR:
228 case QETH_LINK_TYPE_LANE_TR:
229 if ((hdr_mac == QETH_TR_MAC_NC) ||
230 (hdr_mac == QETH_TR_MAC_C))
231 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
232 else
233 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
234 break;
235 /* eth or so multicast? */
236 default:
237 if ((hdr_mac == QETH_ETH_MAC_V4) ||
238 (hdr_mac == QETH_ETH_MAC_V6))
239 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
240 else
241 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
242 }
243}
244
245static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
246 struct sk_buff *skb, int ipv, int cast_type)
247{
248 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)((skb->data) +
249 QETH_HEADER_SIZE);
250
251 memset(hdr, 0, sizeof(struct qeth_hdr));
252 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
253
254 /* set byte byte 3 to casting flags */
255 if (cast_type == RTN_MULTICAST)
256 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
257 else if (cast_type == RTN_BROADCAST)
258 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
259 else
260 qeth_l2_get_packet_type(card, hdr, skb);
261
262 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
263 /* VSWITCH relies on the VLAN
264 * information to be present in
265 * the QDIO header */
266 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
267 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
268 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
269 }
270}
271
272static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
273 struct qeth_reply *reply, unsigned long data)
274{
275 struct qeth_ipa_cmd *cmd;
276
d11ba0c4 277 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
4a71df50
FB		 278 cmd = (struct qeth_ipa_cmd *) data;
279 if (cmd->hdr.return_code) {
280 PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. "
281 "Continuing\n", cmd->data.setdelvlan.vlan_id,
282 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
d11ba0c4
PT		 283 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
284 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
285 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 286 }
287 return 0;
288}
289
290static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
291 enum qeth_ipa_cmds ipacmd)
292{
293 struct qeth_ipa_cmd *cmd;
294 struct qeth_cmd_buffer *iob;
295
d11ba0c4 296 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
4a71df50
FB		 297 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
298 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
299 cmd->data.setdelvlan.vlan_id = i;
300 return qeth_send_ipa_cmd(card, iob,
301 qeth_l2_send_setdelvlan_cb, NULL);
302}
303
304static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
305{
306 struct qeth_vlan_vid *id;
d11ba0c4 307 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
4a71df50
FB		 308 spin_lock_bh(&card->vlanlock);
309 list_for_each_entry(id, &card->vid_list, list) {
310 if (clear)
311 qeth_l2_send_setdelvlan(card, id->vid,
312 IPA_CMD_DELVLAN);
313 else
314 qeth_l2_send_setdelvlan(card, id->vid,
315 IPA_CMD_SETVLAN);
316 }
317 spin_unlock_bh(&card->vlanlock);
318}
319
320static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
321{
322 struct qeth_card *card = netdev_priv(dev);
323 struct qeth_vlan_vid *id;
324
d11ba0c4 325 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
4a71df50
FB		 326 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
327 if (id) {
328 id->vid = vid;
329 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
330 spin_lock_bh(&card->vlanlock);
331 list_add_tail(&id->list, &card->vid_list);
332 spin_unlock_bh(&card->vlanlock);
333 } else {
334 PRINT_ERR("no memory for vid\n");
335 }
336}
337
338static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
339{
340 struct qeth_vlan_vid *id, *tmpid = NULL;
341 struct qeth_card *card = netdev_priv(dev);
342
d11ba0c4 343 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
4a71df50
FB		 344 spin_lock_bh(&card->vlanlock);
345 list_for_each_entry(id, &card->vid_list, list) {
346 if (id->vid == vid) {
347 list_del(&id->list);
348 tmpid = id;
349 break;
350 }
351 }
352 spin_unlock_bh(&card->vlanlock);
353 if (tmpid) {
354 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
355 kfree(tmpid);
356 }
357 qeth_l2_set_multicast_list(card->dev);
358}
359
360static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
361{
362 int rc = 0;
363
d11ba0c4
PT		 364 QETH_DBF_TEXT(SETUP , 2, "stopcard");
365 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 366
367 qeth_set_allowed_threads(card, 0, 1);
368 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
369 return -ERESTARTSYS;
370 if (card->read.state == CH_STATE_UP &&
371 card->write.state == CH_STATE_UP &&
372 (card->state == CARD_STATE_UP)) {
373 if (recovery_mode &&
374 card->info.type != QETH_CARD_TYPE_OSN) {
375 qeth_l2_stop(card->dev);
376 } else {
377 rtnl_lock();
378 dev_close(card->dev);
379 rtnl_unlock();
380 }
381 if (!card->use_hard_stop) {
382 __u8 *mac = &card->dev->dev_addr[0];
383 rc = qeth_l2_send_delmac(card, mac);
d11ba0c4 384 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
4a71df50
FB		 385 }
386 card->state = CARD_STATE_SOFTSETUP;
387 }
388 if (card->state == CARD_STATE_SOFTSETUP) {
389 qeth_l2_process_vlans(card, 1);
390 qeth_l2_del_all_mc(card);
391 qeth_clear_ipacmd_list(card);
392 card->state = CARD_STATE_HARDSETUP;
393 }
394 if (card->state == CARD_STATE_HARDSETUP) {
395 qeth_qdio_clear_card(card, 0);
396 qeth_clear_qdio_buffers(card);
397 qeth_clear_working_pool_list(card);
398 card->state = CARD_STATE_DOWN;
399 }
400 if (card->state == CARD_STATE_DOWN) {
401 qeth_clear_cmd_buffers(&card->read);
402 qeth_clear_cmd_buffers(&card->write);
403 }
404 card->use_hard_stop = 0;
405 return rc;
406}
407
408static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
409 struct qeth_qdio_buffer *buf, int index)
410{
411 struct qdio_buffer_element *element;
412 struct sk_buff *skb;
413 struct qeth_hdr *hdr;
414 int offset;
415 unsigned int len;
416
417 /* get first element of current buffer */
418 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
419 offset = 0;
420 if (card->options.performance_stats)
421 card->perf_stats.bufs_rec++;
422 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
423 &offset, &hdr))) {
424 skb->dev = card->dev;
425 /* is device UP ? */
426 if (!(card->dev->flags & IFF_UP)) {
427 dev_kfree_skb_any(skb);
428 continue;
429 }
430
431 switch (hdr->hdr.l2.id) {
432 case QETH_HEADER_TYPE_LAYER2:
433 skb->pkt_type = PACKET_HOST;
434 skb->protocol = eth_type_trans(skb, skb->dev);
435 if (card->options.checksum_type == NO_CHECKSUMMING)
436 skb->ip_summed = CHECKSUM_UNNECESSARY;
437 else
438 skb->ip_summed = CHECKSUM_NONE;
12883725
UB		 439 if (skb->protocol == htons(ETH_P_802_2))
440 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
4a71df50
FB		 441 len = skb->len;
442 netif_rx(skb);
443 break;
444 case QETH_HEADER_TYPE_OSN:
445 skb_push(skb, sizeof(struct qeth_hdr));
446 skb_copy_to_linear_data(skb, hdr,
447 sizeof(struct qeth_hdr));
448 len = skb->len;
449 card->osn_info.data_cb(skb);
450 break;
451 default:
452 dev_kfree_skb_any(skb);
d11ba0c4
PT		 453 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
454 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 455 continue;
456 }
457 card->dev->last_rx = jiffies;
458 card->stats.rx_packets++;
459 card->stats.rx_bytes += len;
460 }
461}
462
463static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
464 enum qeth_ipa_cmds ipacmd,
465 int (*reply_cb) (struct qeth_card *,
466 struct qeth_reply*,
467 unsigned long))
468{
469 struct qeth_ipa_cmd *cmd;
470 struct qeth_cmd_buffer *iob;
471
d11ba0c4 472 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
4a71df50
FB		 473 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
474 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
475 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
476 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
477 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
478}
479
480static int qeth_l2_send_setmac_cb(struct qeth_card *card,
481 struct qeth_reply *reply,
482 unsigned long data)
483{
484 struct qeth_ipa_cmd *cmd;
485
d11ba0c4 486 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
4a71df50
FB		 487 cmd = (struct qeth_ipa_cmd *) data;
488 if (cmd->hdr.return_code) {
d11ba0c4 489 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
4a71df50
FB		 490 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
491 cmd->hdr.return_code = -EIO;
492 } else {
493 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
494 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
495 OSA_ADDR_LEN);
496 PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
497 "successfully registered on device %s\n",
498 card->dev->dev_addr[0], card->dev->dev_addr[1],
499 card->dev->dev_addr[2], card->dev->dev_addr[3],
500 card->dev->dev_addr[4], card->dev->dev_addr[5],
501 card->dev->name);
502 }
503 return 0;
504}
505
506static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
507{
d11ba0c4 508 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
4a71df50
FB		 509 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
510 qeth_l2_send_setmac_cb);
511}
512
513static int qeth_l2_send_delmac_cb(struct qeth_card *card,
514 struct qeth_reply *reply,
515 unsigned long data)
516{
517 struct qeth_ipa_cmd *cmd;
518
d11ba0c4 519 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
4a71df50
FB		 520 cmd = (struct qeth_ipa_cmd *) data;
521 if (cmd->hdr.return_code) {
d11ba0c4 522 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 523 cmd->hdr.return_code = -EIO;
524 return 0;
525 }
526 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
527
528 return 0;
529}
530
531static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
532{
d11ba0c4 533 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
4a71df50
FB		 534 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
535 return 0;
536 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
537 qeth_l2_send_delmac_cb);
538}
539
540static int qeth_l2_request_initial_mac(struct qeth_card *card)
541{
542 int rc = 0;
543 char vendor_pre[] = {0x02, 0x00, 0x00};
544
d11ba0c4
PT		 545 QETH_DBF_TEXT(SETUP, 2, "doL2init");
546 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
4a71df50
FB		 547
548 rc = qeth_query_setadapterparms(card);
549 if (rc) {
550 PRINT_WARN("could not query adapter parameters on device %s: "
551 "x%x\n", CARD_BUS_ID(card), rc);
552 }
553
554 if (card->info.guestlan) {
555 rc = qeth_setadpparms_change_macaddr(card);
556 if (rc) {
557 PRINT_WARN("couldn't get MAC address on "
558 "device %s: x%x\n",
559 CARD_BUS_ID(card), rc);
d11ba0c4 560 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 561 return rc;
562 }
d11ba0c4 563 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
4a71df50
FB		 564 } else {
565 random_ether_addr(card->dev->dev_addr);
566 memcpy(card->dev->dev_addr, vendor_pre, 3);
567 }
568 return 0;
569}
570
571static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
572{
573 struct sockaddr *addr = p;
574 struct qeth_card *card = netdev_priv(dev);
575 int rc = 0;
576
d11ba0c4 577 QETH_DBF_TEXT(TRACE, 3, "setmac");
4a71df50
FB		 578
579 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
d11ba0c4 580 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
4a71df50
FB		 581 return -EOPNOTSUPP;
582 }
583
584 if (card->info.type == QETH_CARD_TYPE_OSN) {
585 PRINT_WARN("Setting MAC address on %s is not supported.\n",
586 dev->name);
d11ba0c4 587 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
4a71df50
FB		 588 return -EOPNOTSUPP;
589 }
d11ba0c4
PT		 590 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
591 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
4a71df50
FB		 592 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
593 if (!rc)
594 rc = qeth_l2_send_setmac(card, addr->sa_data);
595 return rc;
596}
597
598static void qeth_l2_set_multicast_list(struct net_device *dev)
599{
600 struct qeth_card *card = netdev_priv(dev);
601 struct dev_mc_list *dm;
602
603 if (card->info.type == QETH_CARD_TYPE_OSN)
604 return ;
605
d11ba0c4 606 QETH_DBF_TEXT(TRACE, 3, "setmulti");
4a71df50
FB		 607 qeth_l2_del_all_mc(card);
608 spin_lock_bh(&card->mclock);
609 for (dm = dev->mc_list; dm; dm = dm->next)
610 qeth_l2_add_mc(card, dm->dmi_addr);
611 spin_unlock_bh(&card->mclock);
612 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
613 return;
614 qeth_setadp_promisc_mode(card);
615}
616
617static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
618{
619 int rc;
620 struct qeth_hdr *hdr = NULL;
621 int elements = 0;
622 struct qeth_card *card = netdev_priv(dev);
623 struct sk_buff *new_skb = skb;
624 int ipv = qeth_get_ip_version(skb);
625 int cast_type = qeth_get_cast_type(card, skb);
626 struct qeth_qdio_out_q *queue = card->qdio.out_qs
627 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
628 int tx_bytes = skb->len;
629 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
630 struct qeth_eddp_context *ctx = NULL;
631
4a71df50
FB		 632 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
633 card->stats.tx_carrier_errors++;
634 goto tx_drop;
635 }
636
637 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
638 (skb->protocol == htons(ETH_P_IPV6)))
639 goto tx_drop;
640
641 if (card->options.performance_stats) {
642 card->perf_stats.outbound_cnt++;
643 card->perf_stats.outbound_start_time = qeth_get_micros();
644 }
645 netif_stop_queue(dev);
646
647 if (skb_is_gso(skb))
648 large_send = QETH_LARGE_SEND_EDDP;
649
650 if (card->info.type == QETH_CARD_TYPE_OSN)
651 hdr = (struct qeth_hdr *)skb->data;
652 else {
f90b744e
FB		 653 /* create a clone with writeable headroom */
654 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr));
4a71df50
FB		 655 if (!new_skb)
656 goto tx_drop;
f90b744e
FB		 657 hdr = (struct qeth_hdr *)skb_push(new_skb,
658 sizeof(struct qeth_hdr));
4a71df50
FB		 659 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
660 }
661
662 if (large_send == QETH_LARGE_SEND_EDDP) {
663 ctx = qeth_eddp_create_context(card, new_skb, hdr,
664 skb->sk->sk_protocol);
665 if (ctx == NULL) {
666 PRINT_WARN("could not create eddp context\n");
667 goto tx_drop;
668 }
669 } else {
670 elements = qeth_get_elements_no(card, (void *)hdr, new_skb, 0);
671 if (!elements)
672 goto tx_drop;
673 }
674
675 if ((large_send == QETH_LARGE_SEND_NO) &&
676 (skb->ip_summed == CHECKSUM_PARTIAL))
677 qeth_tx_csum(new_skb);
678
679 if (card->info.type != QETH_CARD_TYPE_IQD)
680 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
681 elements, ctx);
682 else
683 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
684 elements, ctx);
685 if (!rc) {
686 card->stats.tx_packets++;
687 card->stats.tx_bytes += tx_bytes;
688 if (new_skb != skb)
689 dev_kfree_skb_any(skb);
690 if (card->options.performance_stats) {
691 if (large_send != QETH_LARGE_SEND_NO) {
692 card->perf_stats.large_send_bytes += tx_bytes;
693 card->perf_stats.large_send_cnt++;
694 }
695 if (skb_shinfo(new_skb)->nr_frags > 0) {
696 card->perf_stats.sg_skbs_sent++;
697 /* nr_frags + skb->data */
698 card->perf_stats.sg_frags_sent +=
699 skb_shinfo(new_skb)->nr_frags + 1;
700 }
701 }
702
703 if (ctx != NULL) {
704 qeth_eddp_put_context(ctx);
705 dev_kfree_skb_any(new_skb);
706 }
707 } else {
708 if (ctx != NULL)
709 qeth_eddp_put_context(ctx);
710
711 if (rc == -EBUSY) {
712 if (new_skb != skb)
713 dev_kfree_skb_any(new_skb);
714 return NETDEV_TX_BUSY;
715 } else
716 goto tx_drop;
717 }
718
719 netif_wake_queue(dev);
720 if (card->options.performance_stats)
721 card->perf_stats.outbound_time += qeth_get_micros() -
722 card->perf_stats.outbound_start_time;
723 return rc;
724
725tx_drop:
726 card->stats.tx_dropped++;
727 card->stats.tx_errors++;
728 if ((new_skb != skb) && new_skb)
729 dev_kfree_skb_any(new_skb);
730 dev_kfree_skb_any(skb);
731 return NETDEV_TX_OK;
732}
733
734static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
735 unsigned int status, unsigned int qdio_err,
736 unsigned int siga_err, unsigned int queue,
737 int first_element, int count, unsigned long card_ptr)
738{
739 struct net_device *net_dev;
740 struct qeth_card *card;
741 struct qeth_qdio_buffer *buffer;
742 int index;
743 int i;
744
4a71df50
FB		 745 card = (struct qeth_card *) card_ptr;
746 net_dev = card->dev;
747 if (card->options.performance_stats) {
748 card->perf_stats.inbound_cnt++;
749 card->perf_stats.inbound_start_time = qeth_get_micros();
750 }
751 if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
752 if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
d11ba0c4
PT		 753 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
754 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
755 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
4a71df50 756 count);
d11ba0c4 757 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", queue, status);
4a71df50
FB		 758 qeth_schedule_recovery(card);
759 return;
760 }
761 }
762 for (i = first_element; i < (first_element + count); ++i) {
763 index = i % QDIO_MAX_BUFFERS_PER_Q;
764 buffer = &card->qdio.in_q->bufs[index];
765 if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
766 qeth_check_qdio_errors(buffer->buffer,
767 qdio_err, siga_err, "qinerr")))
768 qeth_l2_process_inbound_buffer(card, buffer, index);
769 /* clear buffer and give back to hardware */
770 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
771 qeth_queue_input_buffer(card, index);
772 }
773 if (card->options.performance_stats)
774 card->perf_stats.inbound_time += qeth_get_micros() -
775 card->perf_stats.inbound_start_time;
776}
777
778static int qeth_l2_open(struct net_device *dev)
779{
780 struct qeth_card *card = netdev_priv(dev);
781
d11ba0c4 782 QETH_DBF_TEXT(TRACE, 4, "qethopen");
4a71df50
FB		 783 if (card->state != CARD_STATE_SOFTSETUP)
784 return -ENODEV;
785
786 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
787 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
d11ba0c4 788 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
4a71df50
FB		 789 return -EPERM;
790 }
791 card->data.state = CH_STATE_UP;
792 card->state = CARD_STATE_UP;
793 card->dev->flags |= IFF_UP;
794 netif_start_queue(dev);
795
796 if (!card->lan_online && netif_carrier_ok(dev))
797 netif_carrier_off(dev);
798 return 0;
799}
800
801
802static int qeth_l2_stop(struct net_device *dev)
803{
804 struct qeth_card *card = netdev_priv(dev);
805
d11ba0c4 806 QETH_DBF_TEXT(TRACE, 4, "qethstop");
4a71df50
FB		 807 netif_tx_disable(dev);
808 card->dev->flags &= ~IFF_UP;
809 if (card->state == CARD_STATE_UP)
810 card->state = CARD_STATE_SOFTSETUP;
811 return 0;
812}
813
814static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
815{
816 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
817
818 INIT_LIST_HEAD(&card->vid_list);
819 INIT_LIST_HEAD(&card->mc_list);
820 card->options.layer2 = 1;
821 card->discipline.input_handler = (qdio_handler_t *)
822 qeth_l2_qdio_input_handler;
823 card->discipline.output_handler = (qdio_handler_t *)
824 qeth_qdio_output_handler;
825 card->discipline.recover = qeth_l2_recover;
826 return 0;
827}
828
829static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
830{
831 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
832
833 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
834
835 if (cgdev->state == CCWGROUP_ONLINE) {
836 card->use_hard_stop = 1;
837 qeth_l2_set_offline(cgdev);
838 }
839
840 if (card->dev) {
841 unregister_netdev(card->dev);
842 card->dev = NULL;
843 }
844
845 qeth_l2_del_all_mc(card);
846 return;
847}
848
efe3df6f
FB		 849static int qeth_l2_ethtool_set_tso(struct net_device *dev, u32 data)
850{
851 struct qeth_card *card = netdev_priv(dev);
852
853 if (data) {
854 if (card->options.large_send == QETH_LARGE_SEND_NO) {
855 card->options.large_send = QETH_LARGE_SEND_EDDP;
856 dev->features |= NETIF_F_TSO;
857 }
858 } else {
859 dev->features &= ~NETIF_F_TSO;
860 card->options.large_send = QETH_LARGE_SEND_NO;
861 }
862 return 0;
863}
864
4a71df50
FB		 865static struct ethtool_ops qeth_l2_ethtool_ops = {
866 .get_link = ethtool_op_get_link,
867 .get_tx_csum = ethtool_op_get_tx_csum,
868 .set_tx_csum = ethtool_op_set_tx_hw_csum,
869 .get_sg = ethtool_op_get_sg,
870 .set_sg = ethtool_op_set_sg,
871 .get_tso = ethtool_op_get_tso,
efe3df6f 872 .set_tso = qeth_l2_ethtool_set_tso,
4a71df50
FB		 873 .get_strings = qeth_core_get_strings,
874 .get_ethtool_stats = qeth_core_get_ethtool_stats,
875 .get_stats_count = qeth_core_get_stats_count,
876 .get_drvinfo = qeth_core_get_drvinfo,
3f9975aa 877 .get_settings = qeth_core_ethtool_get_settings,
4a71df50
FB		 878};
879
880static struct ethtool_ops qeth_l2_osn_ops = {
881 .get_strings = qeth_core_get_strings,
882 .get_ethtool_stats = qeth_core_get_ethtool_stats,
883 .get_stats_count = qeth_core_get_stats_count,
884 .get_drvinfo = qeth_core_get_drvinfo,
885};
886
887static int qeth_l2_setup_netdev(struct qeth_card *card)
888{
889 switch (card->info.type) {
890 case QETH_CARD_TYPE_OSAE:
891 card->dev = alloc_etherdev(0);
892 break;
893 case QETH_CARD_TYPE_IQD:
894 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
895 break;
896 case QETH_CARD_TYPE_OSN:
897 card->dev = alloc_netdev(0, "osn%d", ether_setup);
898 card->dev->flags |= IFF_NOARP;
899 break;
900 default:
901 card->dev = alloc_etherdev(0);
902 }
903
904 if (!card->dev)
905 return -ENODEV;
906
907 card->dev->priv = card;
908 card->dev->tx_timeout = &qeth_tx_timeout;
909 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
910 card->dev->open = qeth_l2_open;
911 card->dev->stop = qeth_l2_stop;
912 card->dev->hard_start_xmit = qeth_l2_hard_start_xmit;
913 card->dev->do_ioctl = qeth_l2_do_ioctl;
914 card->dev->get_stats = qeth_get_stats;
915 card->dev->change_mtu = qeth_change_mtu;
916 card->dev->set_multicast_list = qeth_l2_set_multicast_list;
917 card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid;
918 card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid;
919 card->dev->set_mac_address = qeth_l2_set_mac_address;
920 card->dev->mtu = card->info.initial_mtu;
921 if (card->info.type != QETH_CARD_TYPE_OSN)
922 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
923 else
924 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
925 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
926 card->info.broadcast_capable = 1;
927 qeth_l2_request_initial_mac(card);
928 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
929 return register_netdev(card->dev);
930}
931
932static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
933{
934 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
935 int rc = 0;
936 enum qeth_card_states recover_flag;
937
938 BUG_ON(!card);
d11ba0c4
PT		 939 QETH_DBF_TEXT(SETUP, 2, "setonlin");
940 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 941
942 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
943 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) {
944 PRINT_WARN("set_online of card %s interrupted by user!\n",
945 CARD_BUS_ID(card));
946 return -ERESTARTSYS;
947 }
948
949 recover_flag = card->state;
950 rc = ccw_device_set_online(CARD_RDEV(card));
951 if (rc) {
d11ba0c4 952 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 953 return -EIO;
954 }
955 rc = ccw_device_set_online(CARD_WDEV(card));
956 if (rc) {
d11ba0c4 957 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 958 return -EIO;
959 }
960 rc = ccw_device_set_online(CARD_DDEV(card));
961 if (rc) {
d11ba0c4 962 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 963 return -EIO;
964 }
965
966 rc = qeth_core_hardsetup_card(card);
967 if (rc) {
d11ba0c4 968 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4a71df50
FB		 969 goto out_remove;
970 }
971
972 if (!card->dev && qeth_l2_setup_netdev(card))
973 goto out_remove;
974
975 if (card->info.type != QETH_CARD_TYPE_OSN)
976 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
977
978 card->state = CARD_STATE_HARDSETUP;
979 qeth_print_status_message(card);
980
981 /* softsetup */
d11ba0c4 982 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50
FB		 983
984 rc = qeth_send_startlan(card);
985 if (rc) {
d11ba0c4 986 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 987 if (rc == 0xe080) {
988 PRINT_WARN("LAN on card %s if offline! "
989 "Waiting for STARTLAN from card.\n",
990 CARD_BUS_ID(card));
991 card->lan_online = 0;
992 }
993 return rc;
994 } else
995 card->lan_online = 1;
996
997 if (card->info.type != QETH_CARD_TYPE_OSN) {
998 qeth_set_large_send(card, card->options.large_send);
999 qeth_l2_process_vlans(card, 0);
1000 }
1001
1002 netif_tx_disable(card->dev);
1003
1004 rc = qeth_init_qdio_queues(card);
1005 if (rc) {
d11ba0c4 1006 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4a71df50
FB		 1007 goto out_remove;
1008 }
1009 card->state = CARD_STATE_SOFTSETUP;
1010 netif_carrier_on(card->dev);
1011
1012 qeth_set_allowed_threads(card, 0xffffffff, 0);
1013 if (recover_flag == CARD_STATE_RECOVER) {
1014 if (recovery_mode &&
1015 card->info.type != QETH_CARD_TYPE_OSN) {
1016 qeth_l2_open(card->dev);
1017 } else {
1018 rtnl_lock();
1019 dev_open(card->dev);
1020 rtnl_unlock();
1021 }
1022 /* this also sets saved unicast addresses */
1023 qeth_l2_set_multicast_list(card->dev);
1024 }
1025 /* let user_space know that device is online */
1026 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1027 return 0;
1028out_remove:
1029 card->use_hard_stop = 1;
1030 qeth_l2_stop_card(card, 0);
1031 ccw_device_set_offline(CARD_DDEV(card));
1032 ccw_device_set_offline(CARD_WDEV(card));
1033 ccw_device_set_offline(CARD_RDEV(card));
1034 if (recover_flag == CARD_STATE_RECOVER)
1035 card->state = CARD_STATE_RECOVER;
1036 else
1037 card->state = CARD_STATE_DOWN;
1038 return -ENODEV;
1039}
1040
1041static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1042{
1043 return __qeth_l2_set_online(gdev, 0);
1044}
1045
1046static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1047 int recovery_mode)
1048{
1049 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1050 int rc = 0, rc2 = 0, rc3 = 0;
1051 enum qeth_card_states recover_flag;
1052
d11ba0c4
PT		 1053 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1054 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1055
1056 if (card->dev && netif_carrier_ok(card->dev))
1057 netif_carrier_off(card->dev);
1058 recover_flag = card->state;
1059 if (qeth_l2_stop_card(card, recovery_mode) == -ERESTARTSYS) {
1060 PRINT_WARN("Stopping card %s interrupted by user!\n",
1061 CARD_BUS_ID(card));
1062 return -ERESTARTSYS;
1063 }
1064 rc = ccw_device_set_offline(CARD_DDEV(card));
1065 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1066 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1067 if (!rc)
1068 rc = (rc2) ? rc2 : rc3;
1069 if (rc)
d11ba0c4 1070 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 1071 if (recover_flag == CARD_STATE_UP)
1072 card->state = CARD_STATE_RECOVER;
1073 /* let user_space know that device is offline */
1074 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1075 return 0;
1076}
1077
1078static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1079{
1080 return __qeth_l2_set_offline(cgdev, 0);
1081}
1082
1083static int qeth_l2_recover(void *ptr)
1084{
1085 struct qeth_card *card;
1086 int rc = 0;
1087
1088 card = (struct qeth_card *) ptr;
d11ba0c4
PT		 1089 QETH_DBF_TEXT(TRACE, 2, "recover1");
1090 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
4a71df50
FB		 1091 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1092 return 0;
d11ba0c4 1093 QETH_DBF_TEXT(TRACE, 2, "recover2");
4a71df50
FB		 1094 PRINT_WARN("Recovery of device %s started ...\n",
1095 CARD_BUS_ID(card));
1096 card->use_hard_stop = 1;
1097 __qeth_l2_set_offline(card->gdev, 1);
1098 rc = __qeth_l2_set_online(card->gdev, 1);
1099 /* don't run another scheduled recovery */
1100 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1101 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1102 if (!rc)
1103 PRINT_INFO("Device %s successfully recovered!\n",
1104 CARD_BUS_ID(card));
1105 else
1106 PRINT_INFO("Device %s could not be recovered!\n",
1107 CARD_BUS_ID(card));
1108 return 0;
1109}
1110
1111static int __init qeth_l2_init(void)
1112{
1113 PRINT_INFO("register layer 2 discipline\n");
1114 return 0;
1115}
1116
1117static void __exit qeth_l2_exit(void)
1118{
1119 PRINT_INFO("unregister layer 2 discipline\n");
1120}
1121
1122static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1123{
1124 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1125 qeth_qdio_clear_card(card, 0);
1126 qeth_clear_qdio_buffers(card);
1127}
1128
1129struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1130 .probe = qeth_l2_probe_device,
1131 .remove = qeth_l2_remove_device,
1132 .set_online = qeth_l2_set_online,
1133 .set_offline = qeth_l2_set_offline,
1134 .shutdown = qeth_l2_shutdown,
1135};
1136EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1137
1138static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1139 struct qeth_cmd_buffer *iob)
1140{
1141 unsigned long flags;
1142 int rc = 0;
1143
d11ba0c4 1144 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
4a71df50
FB		 1145
1146 wait_event(card->wait_q,
1147 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1148 qeth_prepare_control_data(card, len, iob);
d11ba0c4 1149 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
4a71df50
FB		 1150 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1151 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1152 (addr_t) iob, 0, 0);
1153 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1154 if (rc) {
1155 PRINT_WARN("qeth_osn_send_control_data: "
1156 "ccw_device_start rc = %i\n", rc);
d11ba0c4 1157 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
4a71df50
FB		 1158 qeth_release_buffer(iob->channel, iob);
1159 atomic_set(&card->write.irq_pending, 0);
1160 wake_up(&card->wait_q);
1161 }
1162 return rc;
1163}
1164
1165static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1166 struct qeth_cmd_buffer *iob, int data_len)
1167{
1168 u16 s1, s2;
1169
d11ba0c4 1170 QETH_DBF_TEXT(TRACE, 4, "osndipa");
4a71df50
FB		 1171
1172 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1173 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1174 s2 = (u16)data_len;
1175 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1176 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1177 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1178 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1179 return qeth_osn_send_control_data(card, s1, iob);
1180}
1181
1182int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1183{
1184 struct qeth_cmd_buffer *iob;
1185 struct qeth_card *card;
1186 int rc;
1187
d11ba0c4 1188 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
4a71df50
FB		 1189 if (!dev)
1190 return -ENODEV;
1191 card = netdev_priv(dev);
1192 if (!card)
1193 return -ENODEV;
1194 if ((card->state != CARD_STATE_UP) &&
1195 (card->state != CARD_STATE_SOFTSETUP))
1196 return -ENODEV;
1197 iob = qeth_wait_for_buffer(&card->write);
1198 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1199 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1200 return rc;
1201}
1202EXPORT_SYMBOL(qeth_osn_assist);
1203
1204int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1205 int (*assist_cb)(struct net_device *, void *),
1206 int (*data_cb)(struct sk_buff *))
1207{
1208 struct qeth_card *card;
1209
d11ba0c4 1210 QETH_DBF_TEXT(TRACE, 2, "osnreg");
4a71df50
FB		 1211 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1212 if (*dev == NULL)
1213 return -ENODEV;
1214 card = netdev_priv(*dev);
1215 if (!card)
1216 return -ENODEV;
1217 if ((assist_cb == NULL) || (data_cb == NULL))
1218 return -EINVAL;
1219 card->osn_info.assist_cb = assist_cb;
1220 card->osn_info.data_cb = data_cb;
1221 return 0;
1222}
1223EXPORT_SYMBOL(qeth_osn_register);
1224
1225void qeth_osn_deregister(struct net_device *dev)
1226{
1227 struct qeth_card *card;
1228
d11ba0c4 1229 QETH_DBF_TEXT(TRACE, 2, "osndereg");
4a71df50
FB		 1230 if (!dev)
1231 return;
1232 card = netdev_priv(dev);
1233 if (!card)
1234 return;
1235 card->osn_info.assist_cb = NULL;
1236 card->osn_info.data_cb = NULL;
1237 return;
1238}
1239EXPORT_SYMBOL(qeth_osn_deregister);
1240
1241module_init(qeth_l2_init);
1242module_exit(qeth_l2_exit);
1243MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1244MODULE_DESCRIPTION("qeth layer 2 discipline");
1245MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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