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qeth: use -EOPNOTSUPP instead of -ENOTSUPP.
[linux-2.6-block.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{
509e2562 38 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 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) {
14cc21b6 134 QETH_DBF_MESSAGE(2, "Group MAC %02x:%02x:%02x:%02x:%02x:%02x "
4a71df50
FB		 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)
14cc21b6 141 QETH_DBF_MESSAGE(2, "Could not set group MAC "
4a71df50
FB		 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)
14cc21b6 166 QETH_DBF_MESSAGE(2, "Could not delete group MAC "
4a71df50
FB		 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
14cc21b6 186 if (!mc)
4a71df50 187 return;
4a71df50
FB		 188
189 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
190 mc->mc_addrlen = OSA_ADDR_LEN;
191
192 if (!qeth_l2_send_setgroupmac(card, mac))
193 list_add_tail(&mc->list, &card->mc_list);
194 else
195 kfree(mc);
196}
197
198static void qeth_l2_del_all_mc(struct qeth_card *card)
199{
200 struct qeth_mc_mac *mc, *tmp;
201
202 spin_lock_bh(&card->mclock);
203 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
204 qeth_l2_send_delgroupmac(card, mc->mc_addr);
205 list_del(&mc->list);
206 kfree(mc);
207 }
208 spin_unlock_bh(&card->mclock);
209}
210
211static void qeth_l2_get_packet_type(struct qeth_card *card,
212 struct qeth_hdr *hdr, struct sk_buff *skb)
213{
214 __u16 hdr_mac;
215
216 if (!memcmp(skb->data + QETH_HEADER_SIZE,
217 skb->dev->broadcast, 6)) {
218 /* broadcast? */
219 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
220 return;
221 }
222 hdr_mac = *((__u16 *)skb->data);
223 /* tr multicast? */
224 switch (card->info.link_type) {
225 case QETH_LINK_TYPE_HSTR:
226 case QETH_LINK_TYPE_LANE_TR:
227 if ((hdr_mac == QETH_TR_MAC_NC) ||
228 (hdr_mac == QETH_TR_MAC_C))
229 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
230 else
231 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
232 break;
233 /* eth or so multicast? */
234 default:
235 if ((hdr_mac == QETH_ETH_MAC_V4) ||
236 (hdr_mac == QETH_ETH_MAC_V6))
237 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
238 else
239 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
240 }
241}
242
243static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
244 struct sk_buff *skb, int ipv, int cast_type)
245{
683d718a 246 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
4a71df50
FB		 247
248 memset(hdr, 0, sizeof(struct qeth_hdr));
249 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
250
251 /* set byte byte 3 to casting flags */
252 if (cast_type == RTN_MULTICAST)
253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
254 else if (cast_type == RTN_BROADCAST)
255 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
256 else
257 qeth_l2_get_packet_type(card, hdr, skb);
258
259 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
260 /* VSWITCH relies on the VLAN
261 * information to be present in
262 * the QDIO header */
263 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
264 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
265 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
266 }
267}
268
269static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
270 struct qeth_reply *reply, unsigned long data)
271{
272 struct qeth_ipa_cmd *cmd;
273
d11ba0c4 274 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
4a71df50
FB		 275 cmd = (struct qeth_ipa_cmd *) data;
276 if (cmd->hdr.return_code) {
14cc21b6 277 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
4a71df50
FB		 278 "Continuing\n", cmd->data.setdelvlan.vlan_id,
279 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
d11ba0c4
PT		 280 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
281 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
282 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 283 }
284 return 0;
285}
286
287static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
288 enum qeth_ipa_cmds ipacmd)
289{
290 struct qeth_ipa_cmd *cmd;
291 struct qeth_cmd_buffer *iob;
292
d11ba0c4 293 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
4a71df50
FB		 294 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
295 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
296 cmd->data.setdelvlan.vlan_id = i;
297 return qeth_send_ipa_cmd(card, iob,
298 qeth_l2_send_setdelvlan_cb, NULL);
299}
300
301static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
302{
303 struct qeth_vlan_vid *id;
d11ba0c4 304 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
4a71df50
FB		 305 spin_lock_bh(&card->vlanlock);
306 list_for_each_entry(id, &card->vid_list, list) {
307 if (clear)
308 qeth_l2_send_setdelvlan(card, id->vid,
309 IPA_CMD_DELVLAN);
310 else
311 qeth_l2_send_setdelvlan(card, id->vid,
312 IPA_CMD_SETVLAN);
313 }
314 spin_unlock_bh(&card->vlanlock);
315}
316
317static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
318{
509e2562 319 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 320 struct qeth_vlan_vid *id;
321
d11ba0c4 322 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
4a71df50
FB		 323 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
324 if (id) {
325 id->vid = vid;
326 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
327 spin_lock_bh(&card->vlanlock);
328 list_add_tail(&id->list, &card->vid_list);
329 spin_unlock_bh(&card->vlanlock);
4a71df50
FB		 330 }
331}
332
333static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
334{
335 struct qeth_vlan_vid *id, *tmpid = NULL;
509e2562 336 struct qeth_card *card = dev->ml_priv;
4a71df50 337
d11ba0c4 338 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
4a71df50
FB		 339 spin_lock_bh(&card->vlanlock);
340 list_for_each_entry(id, &card->vid_list, list) {
341 if (id->vid == vid) {
342 list_del(&id->list);
343 tmpid = id;
344 break;
345 }
346 }
347 spin_unlock_bh(&card->vlanlock);
348 if (tmpid) {
349 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
350 kfree(tmpid);
351 }
352 qeth_l2_set_multicast_list(card->dev);
353}
354
355static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
356{
357 int rc = 0;
358
d11ba0c4
PT		 359 QETH_DBF_TEXT(SETUP , 2, "stopcard");
360 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 361
362 qeth_set_allowed_threads(card, 0, 1);
363 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
364 return -ERESTARTSYS;
365 if (card->read.state == CH_STATE_UP &&
366 card->write.state == CH_STATE_UP &&
367 (card->state == CARD_STATE_UP)) {
368 if (recovery_mode &&
369 card->info.type != QETH_CARD_TYPE_OSN) {
370 qeth_l2_stop(card->dev);
371 } else {
372 rtnl_lock();
373 dev_close(card->dev);
374 rtnl_unlock();
375 }
376 if (!card->use_hard_stop) {
377 __u8 *mac = &card->dev->dev_addr[0];
378 rc = qeth_l2_send_delmac(card, mac);
d11ba0c4 379 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
4a71df50
FB		 380 }
381 card->state = CARD_STATE_SOFTSETUP;
382 }
383 if (card->state == CARD_STATE_SOFTSETUP) {
384 qeth_l2_process_vlans(card, 1);
385 qeth_l2_del_all_mc(card);
386 qeth_clear_ipacmd_list(card);
387 card->state = CARD_STATE_HARDSETUP;
388 }
389 if (card->state == CARD_STATE_HARDSETUP) {
390 qeth_qdio_clear_card(card, 0);
391 qeth_clear_qdio_buffers(card);
392 qeth_clear_working_pool_list(card);
393 card->state = CARD_STATE_DOWN;
394 }
395 if (card->state == CARD_STATE_DOWN) {
396 qeth_clear_cmd_buffers(&card->read);
397 qeth_clear_cmd_buffers(&card->write);
398 }
399 card->use_hard_stop = 0;
400 return rc;
401}
402
403static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
404 struct qeth_qdio_buffer *buf, int index)
405{
406 struct qdio_buffer_element *element;
407 struct sk_buff *skb;
408 struct qeth_hdr *hdr;
409 int offset;
410 unsigned int len;
411
412 /* get first element of current buffer */
413 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
414 offset = 0;
415 if (card->options.performance_stats)
416 card->perf_stats.bufs_rec++;
417 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
418 &offset, &hdr))) {
419 skb->dev = card->dev;
420 /* is device UP ? */
421 if (!(card->dev->flags & IFF_UP)) {
422 dev_kfree_skb_any(skb);
423 continue;
424 }
425
426 switch (hdr->hdr.l2.id) {
427 case QETH_HEADER_TYPE_LAYER2:
428 skb->pkt_type = PACKET_HOST;
429 skb->protocol = eth_type_trans(skb, skb->dev);
430 if (card->options.checksum_type == NO_CHECKSUMMING)
431 skb->ip_summed = CHECKSUM_UNNECESSARY;
432 else
433 skb->ip_summed = CHECKSUM_NONE;
12883725
UB		 434 if (skb->protocol == htons(ETH_P_802_2))
435 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
4a71df50
FB		 436 len = skb->len;
437 netif_rx(skb);
438 break;
439 case QETH_HEADER_TYPE_OSN:
440 skb_push(skb, sizeof(struct qeth_hdr));
441 skb_copy_to_linear_data(skb, hdr,
442 sizeof(struct qeth_hdr));
443 len = skb->len;
444 card->osn_info.data_cb(skb);
445 break;
446 default:
447 dev_kfree_skb_any(skb);
d11ba0c4
PT		 448 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
449 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 450 continue;
451 }
452 card->dev->last_rx = jiffies;
453 card->stats.rx_packets++;
454 card->stats.rx_bytes += len;
455 }
456}
457
458static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
459 enum qeth_ipa_cmds ipacmd,
460 int (*reply_cb) (struct qeth_card *,
461 struct qeth_reply*,
462 unsigned long))
463{
464 struct qeth_ipa_cmd *cmd;
465 struct qeth_cmd_buffer *iob;
466
d11ba0c4 467 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
4a71df50
FB		 468 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
469 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
470 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
471 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
472 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
473}
474
475static int qeth_l2_send_setmac_cb(struct qeth_card *card,
476 struct qeth_reply *reply,
477 unsigned long data)
478{
479 struct qeth_ipa_cmd *cmd;
480
d11ba0c4 481 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
4a71df50
FB		 482 cmd = (struct qeth_ipa_cmd *) data;
483 if (cmd->hdr.return_code) {
d11ba0c4 484 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
4a71df50
FB		 485 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
486 cmd->hdr.return_code = -EIO;
487 } else {
488 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
489 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
490 OSA_ADDR_LEN);
491 PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
492 "successfully registered on device %s\n",
493 card->dev->dev_addr[0], card->dev->dev_addr[1],
494 card->dev->dev_addr[2], card->dev->dev_addr[3],
495 card->dev->dev_addr[4], card->dev->dev_addr[5],
496 card->dev->name);
497 }
498 return 0;
499}
500
501static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
502{
d11ba0c4 503 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
4a71df50
FB		 504 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
505 qeth_l2_send_setmac_cb);
506}
507
508static int qeth_l2_send_delmac_cb(struct qeth_card *card,
509 struct qeth_reply *reply,
510 unsigned long data)
511{
512 struct qeth_ipa_cmd *cmd;
513
d11ba0c4 514 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
4a71df50
FB		 515 cmd = (struct qeth_ipa_cmd *) data;
516 if (cmd->hdr.return_code) {
d11ba0c4 517 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 518 cmd->hdr.return_code = -EIO;
519 return 0;
520 }
521 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
522
523 return 0;
524}
525
526static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
527{
d11ba0c4 528 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
4a71df50
FB		 529 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
530 return 0;
531 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
532 qeth_l2_send_delmac_cb);
533}
534
535static int qeth_l2_request_initial_mac(struct qeth_card *card)
536{
537 int rc = 0;
538 char vendor_pre[] = {0x02, 0x00, 0x00};
539
d11ba0c4
PT		 540 QETH_DBF_TEXT(SETUP, 2, "doL2init");
541 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
4a71df50
FB		 542
543 rc = qeth_query_setadapterparms(card);
544 if (rc) {
14cc21b6
FB		 545 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
546 "device %s: x%x\n", CARD_BUS_ID(card), rc);
4a71df50
FB		 547 }
548
549 if (card->info.guestlan) {
550 rc = qeth_setadpparms_change_macaddr(card);
551 if (rc) {
14cc21b6
FB		 552 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
553 "device %s: x%x\n", CARD_BUS_ID(card), rc);
d11ba0c4 554 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 555 return rc;
556 }
d11ba0c4 557 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
4a71df50
FB		 558 } else {
559 random_ether_addr(card->dev->dev_addr);
560 memcpy(card->dev->dev_addr, vendor_pre, 3);
561 }
562 return 0;
563}
564
565static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
566{
567 struct sockaddr *addr = p;
509e2562 568 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 569 int rc = 0;
570
d11ba0c4 571 QETH_DBF_TEXT(TRACE, 3, "setmac");
4a71df50
FB		 572
573 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
d11ba0c4 574 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
4a71df50
FB		 575 return -EOPNOTSUPP;
576 }
577
578 if (card->info.type == QETH_CARD_TYPE_OSN) {
d11ba0c4 579 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
4a71df50
FB		 580 return -EOPNOTSUPP;
581 }
d11ba0c4
PT		 582 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
583 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
4a71df50
FB		 584 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
585 if (!rc)
586 rc = qeth_l2_send_setmac(card, addr->sa_data);
587 return rc;
588}
589
590static void qeth_l2_set_multicast_list(struct net_device *dev)
591{
509e2562 592 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 593 struct dev_mc_list *dm;
594
595 if (card->info.type == QETH_CARD_TYPE_OSN)
596 return ;
597
d11ba0c4 598 QETH_DBF_TEXT(TRACE, 3, "setmulti");
4a71df50
FB		 599 qeth_l2_del_all_mc(card);
600 spin_lock_bh(&card->mclock);
601 for (dm = dev->mc_list; dm; dm = dm->next)
602 qeth_l2_add_mc(card, dm->dmi_addr);
603 spin_unlock_bh(&card->mclock);
604 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
605 return;
606 qeth_setadp_promisc_mode(card);
607}
608
609static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
610{
611 int rc;
612 struct qeth_hdr *hdr = NULL;
613 int elements = 0;
509e2562 614 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 615 struct sk_buff *new_skb = skb;
616 int ipv = qeth_get_ip_version(skb);
617 int cast_type = qeth_get_cast_type(card, skb);
618 struct qeth_qdio_out_q *queue = card->qdio.out_qs
619 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
620 int tx_bytes = skb->len;
621 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
622 struct qeth_eddp_context *ctx = NULL;
683d718a
FB		 623 int data_offset = -1;
624 int elements_needed = 0;
625 int hd_len = 0;
4a71df50 626
4a71df50
FB		 627 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
628 card->stats.tx_carrier_errors++;
629 goto tx_drop;
630 }
631
632 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
633 (skb->protocol == htons(ETH_P_IPV6)))
634 goto tx_drop;
635
636 if (card->options.performance_stats) {
637 card->perf_stats.outbound_cnt++;
638 card->perf_stats.outbound_start_time = qeth_get_micros();
639 }
640 netif_stop_queue(dev);
641
642 if (skb_is_gso(skb))
643 large_send = QETH_LARGE_SEND_EDDP;
644
645 if (card->info.type == QETH_CARD_TYPE_OSN)
646 hdr = (struct qeth_hdr *)skb->data;
647 else {
683d718a
FB		 648 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
649 (skb_shinfo(skb)->nr_frags == 0)) {
650 new_skb = skb;
651 data_offset = ETH_HLEN;
652 hd_len = ETH_HLEN;
653 hdr = kmem_cache_alloc(qeth_core_header_cache,
654 GFP_ATOMIC);
655 if (!hdr)
656 goto tx_drop;
657 elements_needed++;
658 skb_reset_mac_header(new_skb);
659 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
660 hdr->hdr.l2.pkt_length = new_skb->len;
661 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
662 skb_mac_header(new_skb), ETH_HLEN);
663 } else {
664 /* create a clone with writeable headroom */
665 new_skb = skb_realloc_headroom(skb,
666 sizeof(struct qeth_hdr));
667 if (!new_skb)
668 goto tx_drop;
669 hdr = (struct qeth_hdr *)skb_push(new_skb,
f90b744e 670 sizeof(struct qeth_hdr));
683d718a
FB		 671 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
672 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
673 }
4a71df50
FB		 674 }
675
676 if (large_send == QETH_LARGE_SEND_EDDP) {
677 ctx = qeth_eddp_create_context(card, new_skb, hdr,
678 skb->sk->sk_protocol);
679 if (ctx == NULL) {
14cc21b6 680 QETH_DBF_MESSAGE(2, "could not create eddp context\n");
4a71df50
FB		 681 goto tx_drop;
682 }
683 } else {
683d718a
FB		 684 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
685 elements_needed);
686 if (!elements) {
687 if (data_offset >= 0)
688 kmem_cache_free(qeth_core_header_cache, hdr);
4a71df50 689 goto tx_drop;
683d718a 690 }
4a71df50
FB		 691 }
692
693 if ((large_send == QETH_LARGE_SEND_NO) &&
694 (skb->ip_summed == CHECKSUM_PARTIAL))
695 qeth_tx_csum(new_skb);
696
697 if (card->info.type != QETH_CARD_TYPE_IQD)
698 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
699 elements, ctx);
700 else
701 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
683d718a 702 elements, ctx, data_offset, hd_len);
4a71df50
FB		 703 if (!rc) {
704 card->stats.tx_packets++;
705 card->stats.tx_bytes += tx_bytes;
706 if (new_skb != skb)
707 dev_kfree_skb_any(skb);
708 if (card->options.performance_stats) {
709 if (large_send != QETH_LARGE_SEND_NO) {
710 card->perf_stats.large_send_bytes += tx_bytes;
711 card->perf_stats.large_send_cnt++;
712 }
713 if (skb_shinfo(new_skb)->nr_frags > 0) {
714 card->perf_stats.sg_skbs_sent++;
715 /* nr_frags + skb->data */
716 card->perf_stats.sg_frags_sent +=
717 skb_shinfo(new_skb)->nr_frags + 1;
718 }
719 }
720
721 if (ctx != NULL) {
722 qeth_eddp_put_context(ctx);
723 dev_kfree_skb_any(new_skb);
724 }
725 } else {
726 if (ctx != NULL)
727 qeth_eddp_put_context(ctx);
728
683d718a
FB		 729 if (data_offset >= 0)
730 kmem_cache_free(qeth_core_header_cache, hdr);
731
4a71df50
FB		 732 if (rc == -EBUSY) {
733 if (new_skb != skb)
734 dev_kfree_skb_any(new_skb);
735 return NETDEV_TX_BUSY;
736 } else
737 goto tx_drop;
738 }
739
740 netif_wake_queue(dev);
741 if (card->options.performance_stats)
742 card->perf_stats.outbound_time += qeth_get_micros() -
743 card->perf_stats.outbound_start_time;
744 return rc;
745
746tx_drop:
747 card->stats.tx_dropped++;
748 card->stats.tx_errors++;
749 if ((new_skb != skb) && new_skb)
750 dev_kfree_skb_any(new_skb);
751 dev_kfree_skb_any(skb);
d0ec0f54 752 netif_wake_queue(dev);
4a71df50
FB		 753 return NETDEV_TX_OK;
754}
755
756static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
779e6e1c 757 unsigned int qdio_err, unsigned int queue,
4a71df50
FB		 758 int first_element, int count, unsigned long card_ptr)
759{
760 struct net_device *net_dev;
761 struct qeth_card *card;
762 struct qeth_qdio_buffer *buffer;
763 int index;
764 int i;
765
4a71df50
FB		 766 card = (struct qeth_card *) card_ptr;
767 net_dev = card->dev;
768 if (card->options.performance_stats) {
769 card->perf_stats.inbound_cnt++;
770 card->perf_stats.inbound_start_time = qeth_get_micros();
771 }
779e6e1c
JG		 772 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
773 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
774 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
775 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
776 count);
777 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
778 qeth_schedule_recovery(card);
779 return;
4a71df50
FB		 780 }
781 for (i = first_element; i < (first_element + count); ++i) {
782 index = i % QDIO_MAX_BUFFERS_PER_Q;
783 buffer = &card->qdio.in_q->bufs[index];
779e6e1c
JG		 784 if (!(qdio_err &&
785 qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr")))
4a71df50
FB		 786 qeth_l2_process_inbound_buffer(card, buffer, index);
787 /* clear buffer and give back to hardware */
788 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
789 qeth_queue_input_buffer(card, index);
790 }
791 if (card->options.performance_stats)
792 card->perf_stats.inbound_time += qeth_get_micros() -
793 card->perf_stats.inbound_start_time;
794}
795
796static int qeth_l2_open(struct net_device *dev)
797{
509e2562 798 struct qeth_card *card = dev->ml_priv;
4a71df50 799
d11ba0c4 800 QETH_DBF_TEXT(TRACE, 4, "qethopen");
4a71df50
FB		 801 if (card->state != CARD_STATE_SOFTSETUP)
802 return -ENODEV;
803
804 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
805 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
d11ba0c4 806 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
4a71df50
FB		 807 return -EPERM;
808 }
809 card->data.state = CH_STATE_UP;
810 card->state = CARD_STATE_UP;
811 card->dev->flags |= IFF_UP;
812 netif_start_queue(dev);
813
814 if (!card->lan_online && netif_carrier_ok(dev))
815 netif_carrier_off(dev);
816 return 0;
817}
818
819
820static int qeth_l2_stop(struct net_device *dev)
821{
509e2562 822 struct qeth_card *card = dev->ml_priv;
4a71df50 823
d11ba0c4 824 QETH_DBF_TEXT(TRACE, 4, "qethstop");
4a71df50
FB		 825 netif_tx_disable(dev);
826 card->dev->flags &= ~IFF_UP;
827 if (card->state == CARD_STATE_UP)
828 card->state = CARD_STATE_SOFTSETUP;
829 return 0;
830}
831
832static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
833{
834 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
835
836 INIT_LIST_HEAD(&card->vid_list);
837 INIT_LIST_HEAD(&card->mc_list);
838 card->options.layer2 = 1;
839 card->discipline.input_handler = (qdio_handler_t *)
840 qeth_l2_qdio_input_handler;
841 card->discipline.output_handler = (qdio_handler_t *)
842 qeth_qdio_output_handler;
843 card->discipline.recover = qeth_l2_recover;
844 return 0;
845}
846
847static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
848{
849 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
850
851 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
852
853 if (cgdev->state == CCWGROUP_ONLINE) {
854 card->use_hard_stop = 1;
855 qeth_l2_set_offline(cgdev);
856 }
857
858 if (card->dev) {
859 unregister_netdev(card->dev);
860 card->dev = NULL;
861 }
862
863 qeth_l2_del_all_mc(card);
864 return;
865}
866
efe3df6f
FB		 867static int qeth_l2_ethtool_set_tso(struct net_device *dev, u32 data)
868{
509e2562 869 struct qeth_card *card = dev->ml_priv;
efe3df6f
FB		 870
871 if (data) {
872 if (card->options.large_send == QETH_LARGE_SEND_NO) {
873 card->options.large_send = QETH_LARGE_SEND_EDDP;
874 dev->features |= NETIF_F_TSO;
875 }
876 } else {
877 dev->features &= ~NETIF_F_TSO;
878 card->options.large_send = QETH_LARGE_SEND_NO;
879 }
880 return 0;
881}
882
4a71df50
FB		 883static struct ethtool_ops qeth_l2_ethtool_ops = {
884 .get_link = ethtool_op_get_link,
885 .get_tx_csum = ethtool_op_get_tx_csum,
886 .set_tx_csum = ethtool_op_set_tx_hw_csum,
887 .get_sg = ethtool_op_get_sg,
888 .set_sg = ethtool_op_set_sg,
889 .get_tso = ethtool_op_get_tso,
efe3df6f 890 .set_tso = qeth_l2_ethtool_set_tso,
4a71df50
FB		 891 .get_strings = qeth_core_get_strings,
892 .get_ethtool_stats = qeth_core_get_ethtool_stats,
893 .get_stats_count = qeth_core_get_stats_count,
894 .get_drvinfo = qeth_core_get_drvinfo,
3f9975aa 895 .get_settings = qeth_core_ethtool_get_settings,
4a71df50
FB		 896};
897
898static struct ethtool_ops qeth_l2_osn_ops = {
899 .get_strings = qeth_core_get_strings,
900 .get_ethtool_stats = qeth_core_get_ethtool_stats,
901 .get_stats_count = qeth_core_get_stats_count,
902 .get_drvinfo = qeth_core_get_drvinfo,
903};
904
905static int qeth_l2_setup_netdev(struct qeth_card *card)
906{
907 switch (card->info.type) {
908 case QETH_CARD_TYPE_OSAE:
909 card->dev = alloc_etherdev(0);
910 break;
911 case QETH_CARD_TYPE_IQD:
912 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
913 break;
914 case QETH_CARD_TYPE_OSN:
915 card->dev = alloc_netdev(0, "osn%d", ether_setup);
916 card->dev->flags |= IFF_NOARP;
917 break;
918 default:
919 card->dev = alloc_etherdev(0);
920 }
921
922 if (!card->dev)
923 return -ENODEV;
924
509e2562 925 card->dev->ml_priv = card;
4a71df50
FB		 926 card->dev->tx_timeout = &qeth_tx_timeout;
927 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
928 card->dev->open = qeth_l2_open;
929 card->dev->stop = qeth_l2_stop;
930 card->dev->hard_start_xmit = qeth_l2_hard_start_xmit;
931 card->dev->do_ioctl = qeth_l2_do_ioctl;
932 card->dev->get_stats = qeth_get_stats;
933 card->dev->change_mtu = qeth_change_mtu;
934 card->dev->set_multicast_list = qeth_l2_set_multicast_list;
935 card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid;
936 card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid;
937 card->dev->set_mac_address = qeth_l2_set_mac_address;
938 card->dev->mtu = card->info.initial_mtu;
939 if (card->info.type != QETH_CARD_TYPE_OSN)
940 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
941 else
942 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
943 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
944 card->info.broadcast_capable = 1;
945 qeth_l2_request_initial_mac(card);
946 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
947 return register_netdev(card->dev);
948}
949
950static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
951{
952 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
953 int rc = 0;
954 enum qeth_card_states recover_flag;
955
956 BUG_ON(!card);
d11ba0c4
PT		 957 QETH_DBF_TEXT(SETUP, 2, "setonlin");
958 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 959
960 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
961 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) {
962 PRINT_WARN("set_online of card %s interrupted by user!\n",
963 CARD_BUS_ID(card));
964 return -ERESTARTSYS;
965 }
966
967 recover_flag = card->state;
968 rc = ccw_device_set_online(CARD_RDEV(card));
969 if (rc) {
d11ba0c4 970 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 971 return -EIO;
972 }
973 rc = ccw_device_set_online(CARD_WDEV(card));
974 if (rc) {
d11ba0c4 975 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 976 return -EIO;
977 }
978 rc = ccw_device_set_online(CARD_DDEV(card));
979 if (rc) {
d11ba0c4 980 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 981 return -EIO;
982 }
983
984 rc = qeth_core_hardsetup_card(card);
985 if (rc) {
d11ba0c4 986 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4a71df50
FB		 987 goto out_remove;
988 }
989
990 if (!card->dev && qeth_l2_setup_netdev(card))
991 goto out_remove;
992
993 if (card->info.type != QETH_CARD_TYPE_OSN)
994 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
995
996 card->state = CARD_STATE_HARDSETUP;
997 qeth_print_status_message(card);
998
999 /* softsetup */
d11ba0c4 1000 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50
FB		 1001
1002 rc = qeth_send_startlan(card);
1003 if (rc) {
d11ba0c4 1004 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 1005 if (rc == 0xe080) {
1006 PRINT_WARN("LAN on card %s if offline! "
1007 "Waiting for STARTLAN from card.\n",
1008 CARD_BUS_ID(card));
1009 card->lan_online = 0;
1010 }
1011 return rc;
1012 } else
1013 card->lan_online = 1;
1014
1015 if (card->info.type != QETH_CARD_TYPE_OSN) {
1016 qeth_set_large_send(card, card->options.large_send);
1017 qeth_l2_process_vlans(card, 0);
1018 }
1019
1020 netif_tx_disable(card->dev);
1021
1022 rc = qeth_init_qdio_queues(card);
1023 if (rc) {
d11ba0c4 1024 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4a71df50
FB		 1025 goto out_remove;
1026 }
1027 card->state = CARD_STATE_SOFTSETUP;
1028 netif_carrier_on(card->dev);
1029
1030 qeth_set_allowed_threads(card, 0xffffffff, 0);
1031 if (recover_flag == CARD_STATE_RECOVER) {
1032 if (recovery_mode &&
1033 card->info.type != QETH_CARD_TYPE_OSN) {
1034 qeth_l2_open(card->dev);
1035 } else {
1036 rtnl_lock();
1037 dev_open(card->dev);
1038 rtnl_unlock();
1039 }
1040 /* this also sets saved unicast addresses */
1041 qeth_l2_set_multicast_list(card->dev);
1042 }
1043 /* let user_space know that device is online */
1044 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1045 return 0;
1046out_remove:
1047 card->use_hard_stop = 1;
1048 qeth_l2_stop_card(card, 0);
1049 ccw_device_set_offline(CARD_DDEV(card));
1050 ccw_device_set_offline(CARD_WDEV(card));
1051 ccw_device_set_offline(CARD_RDEV(card));
1052 if (recover_flag == CARD_STATE_RECOVER)
1053 card->state = CARD_STATE_RECOVER;
1054 else
1055 card->state = CARD_STATE_DOWN;
1056 return -ENODEV;
1057}
1058
1059static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1060{
1061 return __qeth_l2_set_online(gdev, 0);
1062}
1063
1064static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1065 int recovery_mode)
1066{
1067 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1068 int rc = 0, rc2 = 0, rc3 = 0;
1069 enum qeth_card_states recover_flag;
1070
d11ba0c4
PT		 1071 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1072 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1073
1074 if (card->dev && netif_carrier_ok(card->dev))
1075 netif_carrier_off(card->dev);
1076 recover_flag = card->state;
1077 if (qeth_l2_stop_card(card, recovery_mode) == -ERESTARTSYS) {
1078 PRINT_WARN("Stopping card %s interrupted by user!\n",
1079 CARD_BUS_ID(card));
1080 return -ERESTARTSYS;
1081 }
1082 rc = ccw_device_set_offline(CARD_DDEV(card));
1083 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1084 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1085 if (!rc)
1086 rc = (rc2) ? rc2 : rc3;
1087 if (rc)
d11ba0c4 1088 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 1089 if (recover_flag == CARD_STATE_UP)
1090 card->state = CARD_STATE_RECOVER;
1091 /* let user_space know that device is offline */
1092 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1093 return 0;
1094}
1095
1096static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1097{
1098 return __qeth_l2_set_offline(cgdev, 0);
1099}
1100
1101static int qeth_l2_recover(void *ptr)
1102{
1103 struct qeth_card *card;
1104 int rc = 0;
1105
1106 card = (struct qeth_card *) ptr;
d11ba0c4
PT		 1107 QETH_DBF_TEXT(TRACE, 2, "recover1");
1108 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
4a71df50
FB		 1109 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1110 return 0;
d11ba0c4 1111 QETH_DBF_TEXT(TRACE, 2, "recover2");
4a71df50
FB		 1112 PRINT_WARN("Recovery of device %s started ...\n",
1113 CARD_BUS_ID(card));
1114 card->use_hard_stop = 1;
1115 __qeth_l2_set_offline(card->gdev, 1);
1116 rc = __qeth_l2_set_online(card->gdev, 1);
1117 /* don't run another scheduled recovery */
1118 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1119 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1120 if (!rc)
1121 PRINT_INFO("Device %s successfully recovered!\n",
1122 CARD_BUS_ID(card));
1123 else
1124 PRINT_INFO("Device %s could not be recovered!\n",
1125 CARD_BUS_ID(card));
1126 return 0;
1127}
1128
1129static int __init qeth_l2_init(void)
1130{
1131 PRINT_INFO("register layer 2 discipline\n");
1132 return 0;
1133}
1134
1135static void __exit qeth_l2_exit(void)
1136{
1137 PRINT_INFO("unregister layer 2 discipline\n");
1138}
1139
1140static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1141{
1142 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1143 qeth_qdio_clear_card(card, 0);
1144 qeth_clear_qdio_buffers(card);
1145}
1146
1147struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1148 .probe = qeth_l2_probe_device,
1149 .remove = qeth_l2_remove_device,
1150 .set_online = qeth_l2_set_online,
1151 .set_offline = qeth_l2_set_offline,
1152 .shutdown = qeth_l2_shutdown,
1153};
1154EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1155
1156static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1157 struct qeth_cmd_buffer *iob)
1158{
1159 unsigned long flags;
1160 int rc = 0;
1161
d11ba0c4 1162 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
4a71df50
FB		 1163
1164 wait_event(card->wait_q,
1165 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1166 qeth_prepare_control_data(card, len, iob);
d11ba0c4 1167 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
4a71df50
FB		 1168 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1169 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1170 (addr_t) iob, 0, 0);
1171 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1172 if (rc) {
14cc21b6 1173 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
4a71df50 1174 "ccw_device_start rc = %i\n", rc);
d11ba0c4 1175 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
4a71df50
FB		 1176 qeth_release_buffer(iob->channel, iob);
1177 atomic_set(&card->write.irq_pending, 0);
1178 wake_up(&card->wait_q);
1179 }
1180 return rc;
1181}
1182
1183static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1184 struct qeth_cmd_buffer *iob, int data_len)
1185{
1186 u16 s1, s2;
1187
d11ba0c4 1188 QETH_DBF_TEXT(TRACE, 4, "osndipa");
4a71df50
FB		 1189
1190 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1191 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1192 s2 = (u16)data_len;
1193 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1194 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1195 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1196 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1197 return qeth_osn_send_control_data(card, s1, iob);
1198}
1199
1200int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1201{
1202 struct qeth_cmd_buffer *iob;
1203 struct qeth_card *card;
1204 int rc;
1205
d11ba0c4 1206 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
4a71df50
FB		 1207 if (!dev)
1208 return -ENODEV;
509e2562 1209 card = dev->ml_priv;
4a71df50
FB		 1210 if (!card)
1211 return -ENODEV;
1212 if ((card->state != CARD_STATE_UP) &&
1213 (card->state != CARD_STATE_SOFTSETUP))
1214 return -ENODEV;
1215 iob = qeth_wait_for_buffer(&card->write);
1216 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1217 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1218 return rc;
1219}
1220EXPORT_SYMBOL(qeth_osn_assist);
1221
1222int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1223 int (*assist_cb)(struct net_device *, void *),
1224 int (*data_cb)(struct sk_buff *))
1225{
1226 struct qeth_card *card;
1227
d11ba0c4 1228 QETH_DBF_TEXT(TRACE, 2, "osnreg");
4a71df50
FB		 1229 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1230 if (*dev == NULL)
1231 return -ENODEV;
509e2562 1232 card = (*dev)->ml_priv;
4a71df50
FB		 1233 if (!card)
1234 return -ENODEV;
1235 if ((assist_cb == NULL) || (data_cb == NULL))
1236 return -EINVAL;
1237 card->osn_info.assist_cb = assist_cb;
1238 card->osn_info.data_cb = data_cb;
1239 return 0;
1240}
1241EXPORT_SYMBOL(qeth_osn_register);
1242
1243void qeth_osn_deregister(struct net_device *dev)
1244{
1245 struct qeth_card *card;
1246
d11ba0c4 1247 QETH_DBF_TEXT(TRACE, 2, "osndereg");
4a71df50
FB		 1248 if (!dev)
1249 return;
509e2562 1250 card = dev->ml_priv;
4a71df50
FB		 1251 if (!card)
1252 return;
1253 card->osn_info.assist_cb = NULL;
1254 card->osn_info.data_cb = NULL;
1255 return;
1256}
1257EXPORT_SYMBOL(qeth_osn_deregister);
1258
1259module_init(qeth_l2_init);
1260module_exit(qeth_l2_exit);
1261MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1262MODULE_DESCRIPTION("qeth layer 2 discipline");
1263MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)