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qeth: convert to hw_features part 2
[deliverable/linux.git] / drivers / s390 / net / qeth_l2_main.c
CommitLineData
4a71df50
FB		 1/*
2 * drivers/s390/net/qeth_l2_main.c
3 *
bbcfcdc8 4 * Copyright IBM Corp. 2007, 2009
4a71df50
FB		 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
74eacdb9
FB		 11#define KMSG_COMPONENT "qeth"
12#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
4a71df50
FB		 14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/string.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
5a0e3ad6 19#include <linux/slab.h>
4a71df50
FB		 20#include <linux/etherdevice.h>
21#include <linux/mii.h>
22#include <linux/ip.h>
ccffad25 23#include <linux/list.h>
4a71df50 24
4a71df50 25#include "qeth_core.h"
4a71df50 26
4a71df50
FB		 27static int qeth_l2_set_offline(struct ccwgroup_device *);
28static int qeth_l2_stop(struct net_device *);
29static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
30static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
31 enum qeth_ipa_cmds,
32 int (*reply_cb) (struct qeth_card *,
33 struct qeth_reply*,
34 unsigned long));
35static void qeth_l2_set_multicast_list(struct net_device *);
36static int qeth_l2_recover(void *);
37
38static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
39{
509e2562 40 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 41 struct mii_ioctl_data *mii_data;
42 int rc = 0;
43
44 if (!card)
45 return -ENODEV;
46
47 if ((card->state != CARD_STATE_UP) &&
48 (card->state != CARD_STATE_SOFTSETUP))
49 return -ENODEV;
50
51 if (card->info.type == QETH_CARD_TYPE_OSN)
52 return -EPERM;
53
54 switch (cmd) {
55 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
56 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
57 break;
58 case SIOC_QETH_GET_CARD_TYPE:
5113fec0
UB		 59 if ((card->info.type == QETH_CARD_TYPE_OSD ||
60 card->info.type == QETH_CARD_TYPE_OSM ||
61 card->info.type == QETH_CARD_TYPE_OSX) &&
4a71df50
FB		 62 !card->info.guestlan)
63 return 1;
64 return 0;
65 break;
66 case SIOCGMIIPHY:
67 mii_data = if_mii(rq);
68 mii_data->phy_id = 0;
69 break;
70 case SIOCGMIIREG:
71 mii_data = if_mii(rq);
72 if (mii_data->phy_id != 0)
73 rc = -EINVAL;
74 else
75 mii_data->val_out = qeth_mdio_read(dev,
76 mii_data->phy_id, mii_data->reg_num);
77 break;
78 default:
79 rc = -EOPNOTSUPP;
80 }
81 if (rc)
847a50fd 82 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
4a71df50
FB		 83 return rc;
84}
85
86static int qeth_l2_verify_dev(struct net_device *dev)
87{
88 struct qeth_card *card;
89 unsigned long flags;
90 int rc = 0;
91
92 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
93 list_for_each_entry(card, &qeth_core_card_list.list, list) {
94 if (card->dev == dev) {
95 rc = QETH_REAL_CARD;
96 break;
97 }
98 }
99 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
100
101 return rc;
102}
103
104static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
105{
106 struct qeth_card *card;
107 struct net_device *ndev;
f06f6f32 108 __u16 temp_dev_no;
4a71df50 109 unsigned long flags;
f06f6f32 110 struct ccw_dev_id read_devid;
4a71df50
FB		 111
112 ndev = NULL;
113 memcpy(&temp_dev_no, read_dev_no, 2);
114 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
115 list_for_each_entry(card, &qeth_core_card_list.list, list) {
f06f6f32
CH		 116 ccw_device_get_id(CARD_RDEV(card), &read_devid);
117 if (read_devid.devno == temp_dev_no) {
4a71df50
FB		 118 ndev = card->dev;
119 break;
120 }
121 }
122 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
123 return ndev;
124}
125
126static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
127 struct qeth_reply *reply,
128 unsigned long data)
129{
130 struct qeth_ipa_cmd *cmd;
131 __u8 *mac;
132
847a50fd 133 QETH_CARD_TEXT(card, 2, "L2Sgmacb");
4a71df50
FB		 134 cmd = (struct qeth_ipa_cmd *) data;
135 mac = &cmd->data.setdelmac.mac[0];
136 /* MAC already registered, needed in couple/uncouple case */
0666eb06 137 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
7c510e4b
JB		 138 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
139 mac, QETH_CARD_IFNAME(card));
4a71df50
FB		 140 cmd->hdr.return_code = 0;
141 }
142 if (cmd->hdr.return_code)
7c510e4b
JB		 143 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
144 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
4a71df50
FB		 145 return 0;
146}
147
148static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
149{
847a50fd 150 QETH_CARD_TEXT(card, 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
847a50fd 162 QETH_CARD_TEXT(card, 2, "L2Dgmacb");
4a71df50
FB		 163 cmd = (struct qeth_ipa_cmd *) data;
164 mac = &cmd->data.setdelmac.mac[0];
165 if (cmd->hdr.return_code)
7c510e4b
JB		 166 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
167 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
4a71df50
FB		 168 return 0;
169}
170
171static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
172{
847a50fd 173 QETH_CARD_TEXT(card, 2, "L2Dgmac");
4a71df50
FB		 174 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
175 qeth_l2_send_delgroupmac_cb);
176}
177
7db2266a 178static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
4a71df50
FB		 179{
180 struct qeth_mc_mac *mc;
7db2266a 181 int rc;
4a71df50
FB		 182
183 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
184
14cc21b6 185 if (!mc)
4a71df50 186 return;
4a71df50
FB		 187
188 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
189 mc->mc_addrlen = OSA_ADDR_LEN;
7db2266a
FB		 190 mc->is_vmac = vmac;
191
192 if (vmac) {
193 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
194 NULL);
195 } else {
196 rc = qeth_l2_send_setgroupmac(card, mac);
197 }
4a71df50 198
7db2266a 199 if (!rc)
4a71df50
FB		 200 list_add_tail(&mc->list, &card->mc_list);
201 else
202 kfree(mc);
203}
204
70919e23 205static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
4a71df50
FB		 206{
207 struct qeth_mc_mac *mc, *tmp;
208
209 spin_lock_bh(&card->mclock);
210 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
70919e23
UB		 211 if (del) {
212 if (mc->is_vmac)
213 qeth_l2_send_setdelmac(card, mc->mc_addr,
7db2266a 214 IPA_CMD_DELVMAC, NULL);
70919e23
UB		 215 else
216 qeth_l2_send_delgroupmac(card, mc->mc_addr);
217 }
4a71df50
FB		 218 list_del(&mc->list);
219 kfree(mc);
220 }
221 spin_unlock_bh(&card->mclock);
222}
223
ce73e10e
KDW		 224static inline int qeth_l2_get_cast_type(struct qeth_card *card,
225 struct sk_buff *skb)
4a71df50 226{
ce73e10e
KDW		 227 if (card->info.type == QETH_CARD_TYPE_OSN)
228 return RTN_UNSPEC;
229 if (is_broadcast_ether_addr(skb->data))
230 return RTN_BROADCAST;
231 if (is_multicast_ether_addr(skb->data))
232 return RTN_MULTICAST;
233 return RTN_UNSPEC;
4a71df50
FB		 234}
235
236static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
237 struct sk_buff *skb, int ipv, int cast_type)
238{
683d718a 239 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
4a71df50
FB		 240
241 memset(hdr, 0, sizeof(struct qeth_hdr));
242 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
243
244 /* set byte byte 3 to casting flags */
245 if (cast_type == RTN_MULTICAST)
246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
247 else if (cast_type == RTN_BROADCAST)
248 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
249 else
ce73e10e 250 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
4a71df50
FB		 251
252 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
253 /* VSWITCH relies on the VLAN
254 * information to be present in
255 * the QDIO header */
256 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
257 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
258 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
259 }
260}
261
262static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
263 struct qeth_reply *reply, unsigned long data)
264{
265 struct qeth_ipa_cmd *cmd;
266
847a50fd 267 QETH_CARD_TEXT(card, 2, "L2sdvcb");
4a71df50
FB		 268 cmd = (struct qeth_ipa_cmd *) data;
269 if (cmd->hdr.return_code) {
14cc21b6 270 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
4a71df50
FB		 271 "Continuing\n", cmd->data.setdelvlan.vlan_id,
272 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
847a50fd
CO		 273 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
274 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 275 }
276 return 0;
277}
278
279static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
280 enum qeth_ipa_cmds ipacmd)
281{
282 struct qeth_ipa_cmd *cmd;
283 struct qeth_cmd_buffer *iob;
284
847a50fd 285 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
4a71df50
FB		 286 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
287 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
288 cmd->data.setdelvlan.vlan_id = i;
289 return qeth_send_ipa_cmd(card, iob,
290 qeth_l2_send_setdelvlan_cb, NULL);
291}
292
70919e23 293static void qeth_l2_process_vlans(struct qeth_card *card)
4a71df50
FB		 294{
295 struct qeth_vlan_vid *id;
847a50fd 296 QETH_CARD_TEXT(card, 3, "L2prcvln");
4a71df50
FB		 297 spin_lock_bh(&card->vlanlock);
298 list_for_each_entry(id, &card->vid_list, list) {
70919e23 299 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
4a71df50
FB		 300 }
301 spin_unlock_bh(&card->vlanlock);
302}
303
304static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
305{
509e2562 306 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 307 struct qeth_vlan_vid *id;
308
847a50fd 309 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
10651db7
UB		 310 if (!vid)
311 return;
5113fec0 312 if (card->info.type == QETH_CARD_TYPE_OSM) {
847a50fd 313 QETH_CARD_TEXT(card, 3, "aidOSM");
5113fec0
UB		 314 return;
315 }
8e98ac48 316 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 317 QETH_CARD_TEXT(card, 3, "aidREC");
8e98ac48
UB		 318 return;
319 }
4a71df50
FB		 320 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
321 if (id) {
322 id->vid = vid;
323 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
324 spin_lock_bh(&card->vlanlock);
325 list_add_tail(&id->list, &card->vid_list);
326 spin_unlock_bh(&card->vlanlock);
4a71df50
FB		 327 }
328}
329
330static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
331{
332 struct qeth_vlan_vid *id, *tmpid = NULL;
509e2562 333 struct qeth_card *card = dev->ml_priv;
4a71df50 334
847a50fd 335 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
5113fec0 336 if (card->info.type == QETH_CARD_TYPE_OSM) {
847a50fd 337 QETH_CARD_TEXT(card, 3, "kidOSM");
5113fec0
UB		 338 return;
339 }
8e98ac48 340 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 341 QETH_CARD_TEXT(card, 3, "kidREC");
8e98ac48
UB		 342 return;
343 }
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);
4a71df50
FB		 368 if (card->read.state == CH_STATE_UP &&
369 card->write.state == CH_STATE_UP &&
370 (card->state == CARD_STATE_UP)) {
371 if (recovery_mode &&
372 card->info.type != QETH_CARD_TYPE_OSN) {
373 qeth_l2_stop(card->dev);
374 } else {
375 rtnl_lock();
376 dev_close(card->dev);
377 rtnl_unlock();
378 }
70919e23 379 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
4a71df50
FB		 380 card->state = CARD_STATE_SOFTSETUP;
381 }
382 if (card->state == CARD_STATE_SOFTSETUP) {
70919e23 383 qeth_l2_del_all_mc(card, 0);
4a71df50
FB		 384 qeth_clear_ipacmd_list(card);
385 card->state = CARD_STATE_HARDSETUP;
386 }
387 if (card->state == CARD_STATE_HARDSETUP) {
388 qeth_qdio_clear_card(card, 0);
389 qeth_clear_qdio_buffers(card);
390 qeth_clear_working_pool_list(card);
391 card->state = CARD_STATE_DOWN;
392 }
393 if (card->state == CARD_STATE_DOWN) {
394 qeth_clear_cmd_buffers(&card->read);
395 qeth_clear_cmd_buffers(&card->write);
396 }
4a71df50
FB		 397 return rc;
398}
399
a1c3ed4c
FB		 400static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
401 int budget, int *done)
4a71df50 402{
a1c3ed4c 403 int work_done = 0;
4a71df50
FB		 404 struct sk_buff *skb;
405 struct qeth_hdr *hdr;
4a71df50
FB		 406 unsigned int len;
407
a1c3ed4c
FB		 408 *done = 0;
409 BUG_ON(!budget);
410 while (budget) {
411 skb = qeth_core_get_next_skb(card,
412 card->qdio.in_q->bufs[card->rx.b_index].buffer,
413 &card->rx.b_element, &card->rx.e_offset, &hdr);
414 if (!skb) {
415 *done = 1;
416 break;
4a71df50 417 }
a1c3ed4c 418 skb->dev = card->dev;
4a71df50
FB		 419 switch (hdr->hdr.l2.id) {
420 case QETH_HEADER_TYPE_LAYER2:
421 skb->pkt_type = PACKET_HOST;
422 skb->protocol = eth_type_trans(skb, skb->dev);
c5e631a8 423 skb->ip_summed = CHECKSUM_NONE;
12883725
UB		 424 if (skb->protocol == htons(ETH_P_802_2))
425 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
4a71df50 426 len = skb->len;
a1c3ed4c 427 netif_receive_skb(skb);
4a71df50
FB		 428 break;
429 case QETH_HEADER_TYPE_OSN:
2d488c2f
UB		 430 if (card->info.type == QETH_CARD_TYPE_OSN) {
431 skb_push(skb, sizeof(struct qeth_hdr));
432 skb_copy_to_linear_data(skb, hdr,
4a71df50 433 sizeof(struct qeth_hdr));
2d488c2f
UB		 434 len = skb->len;
435 card->osn_info.data_cb(skb);
436 break;
437 }
438 /* else unknown */
4a71df50
FB		 439 default:
440 dev_kfree_skb_any(skb);
847a50fd 441 QETH_CARD_TEXT(card, 3, "inbunkno");
d11ba0c4 442 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 443 continue;
444 }
a1c3ed4c
FB		 445 work_done++;
446 budget--;
4a71df50
FB		 447 card->stats.rx_packets++;
448 card->stats.rx_bytes += len;
449 }
a1c3ed4c
FB		 450 return work_done;
451}
452
453static int qeth_l2_poll(struct napi_struct *napi, int budget)
454{
455 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
456 int work_done = 0;
457 struct qeth_qdio_buffer *buffer;
458 int done;
459 int new_budget = budget;
460
461 if (card->options.performance_stats) {
462 card->perf_stats.inbound_cnt++;
463 card->perf_stats.inbound_start_time = qeth_get_micros();
464 }
465
466 while (1) {
467 if (!card->rx.b_count) {
468 card->rx.qdio_err = 0;
469 card->rx.b_count = qdio_get_next_buffers(
470 card->data.ccwdev, 0, &card->rx.b_index,
471 &card->rx.qdio_err);
472 if (card->rx.b_count <= 0) {
473 card->rx.b_count = 0;
474 break;
475 }
476 card->rx.b_element =
477 &card->qdio.in_q->bufs[card->rx.b_index]
478 .buffer->element[0];
479 card->rx.e_offset = 0;
480 }
481
482 while (card->rx.b_count) {
483 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
484 if (!(card->rx.qdio_err &&
485 qeth_check_qdio_errors(card, buffer->buffer,
486 card->rx.qdio_err, "qinerr")))
487 work_done += qeth_l2_process_inbound_buffer(
488 card, new_budget, &done);
489 else
490 done = 1;
491
492 if (done) {
493 if (card->options.performance_stats)
494 card->perf_stats.bufs_rec++;
495 qeth_put_buffer_pool_entry(card,
496 buffer->pool_entry);
497 qeth_queue_input_buffer(card, card->rx.b_index);
498 card->rx.b_count--;
499 if (card->rx.b_count) {
500 card->rx.b_index =
501 (card->rx.b_index + 1) %
502 QDIO_MAX_BUFFERS_PER_Q;
503 card->rx.b_element =
504 &card->qdio.in_q
505 ->bufs[card->rx.b_index]
506 .buffer->element[0];
507 card->rx.e_offset = 0;
508 }
509 }
510
511 if (work_done >= budget)
512 goto out;
513 else
514 new_budget = budget - work_done;
515 }
516 }
517
518 napi_complete(napi);
519 if (qdio_start_irq(card->data.ccwdev, 0))
520 napi_schedule(&card->napi);
521out:
522 if (card->options.performance_stats)
523 card->perf_stats.inbound_time += qeth_get_micros() -
524 card->perf_stats.inbound_start_time;
525 return work_done;
4a71df50
FB		 526}
527
528static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
529 enum qeth_ipa_cmds ipacmd,
530 int (*reply_cb) (struct qeth_card *,
531 struct qeth_reply*,
532 unsigned long))
533{
534 struct qeth_ipa_cmd *cmd;
535 struct qeth_cmd_buffer *iob;
536
847a50fd 537 QETH_CARD_TEXT(card, 2, "L2sdmac");
4a71df50
FB		 538 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
539 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
540 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
541 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
542 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
543}
544
545static int qeth_l2_send_setmac_cb(struct qeth_card *card,
546 struct qeth_reply *reply,
547 unsigned long data)
548{
549 struct qeth_ipa_cmd *cmd;
550
847a50fd 551 QETH_CARD_TEXT(card, 2, "L2Smaccb");
4a71df50
FB		 552 cmd = (struct qeth_ipa_cmd *) data;
553 if (cmd->hdr.return_code) {
847a50fd 554 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
4a71df50 555 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
0666eb06
UB		 556 switch (cmd->hdr.return_code) {
557 case IPA_RC_L2_DUP_MAC:
558 case IPA_RC_L2_DUP_LAYER3_MAC:
559 dev_warn(&card->gdev->dev,
d998ab0b 560 "MAC address %pM already exists\n",
221c17fe 561 cmd->data.setdelmac.mac);
0666eb06
UB		 562 break;
563 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
564 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
565 dev_warn(&card->gdev->dev,
d998ab0b 566 "MAC address %pM is not authorized\n",
221c17fe 567 cmd->data.setdelmac.mac);
0666eb06
UB		 568 break;
569 default:
570 break;
571 }
4a71df50
FB		 572 cmd->hdr.return_code = -EIO;
573 } else {
574 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
575 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
576 OSA_ADDR_LEN);
74eacdb9 577 dev_info(&card->gdev->dev,
d998ab0b
HS		 578 "MAC address %pM successfully registered on device %s\n",
579 card->dev->dev_addr, card->dev->name);
4a71df50
FB		 580 }
581 return 0;
582}
583
584static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
585{
847a50fd 586 QETH_CARD_TEXT(card, 2, "L2Setmac");
4a71df50
FB		 587 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
588 qeth_l2_send_setmac_cb);
589}
590
591static int qeth_l2_send_delmac_cb(struct qeth_card *card,
592 struct qeth_reply *reply,
593 unsigned long data)
594{
595 struct qeth_ipa_cmd *cmd;
596
847a50fd 597 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
4a71df50
FB		 598 cmd = (struct qeth_ipa_cmd *) data;
599 if (cmd->hdr.return_code) {
847a50fd 600 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 601 cmd->hdr.return_code = -EIO;
602 return 0;
603 }
604 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
605
606 return 0;
607}
608
609static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
610{
847a50fd 611 QETH_CARD_TEXT(card, 2, "L2Delmac");
4a71df50
FB		 612 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
613 return 0;
614 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
615 qeth_l2_send_delmac_cb);
616}
617
618static int qeth_l2_request_initial_mac(struct qeth_card *card)
619{
620 int rc = 0;
621 char vendor_pre[] = {0x02, 0x00, 0x00};
622
d11ba0c4
PT		 623 QETH_DBF_TEXT(SETUP, 2, "doL2init");
624 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
4a71df50
FB		 625
626 rc = qeth_query_setadapterparms(card);
627 if (rc) {
14cc21b6
FB		 628 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
629 "device %s: x%x\n", CARD_BUS_ID(card), rc);
4a71df50
FB		 630 }
631
5113fec0
UB		 632 if (card->info.type == QETH_CARD_TYPE_IQD ||
633 card->info.type == QETH_CARD_TYPE_OSM ||
634 card->info.type == QETH_CARD_TYPE_OSX ||
635 card->info.guestlan) {
4a71df50
FB		 636 rc = qeth_setadpparms_change_macaddr(card);
637 if (rc) {
14cc21b6
FB		 638 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
639 "device %s: x%x\n", CARD_BUS_ID(card), rc);
d11ba0c4 640 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 641 return rc;
642 }
d11ba0c4 643 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
4a71df50
FB		 644 } else {
645 random_ether_addr(card->dev->dev_addr);
646 memcpy(card->dev->dev_addr, vendor_pre, 3);
647 }
648 return 0;
649}
650
651static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
652{
653 struct sockaddr *addr = p;
509e2562 654 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 655 int rc = 0;
656
847a50fd 657 QETH_CARD_TEXT(card, 3, "setmac");
4a71df50
FB		 658
659 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
847a50fd 660 QETH_CARD_TEXT(card, 3, "setmcINV");
4a71df50
FB		 661 return -EOPNOTSUPP;
662 }
663
5113fec0
UB		 664 if (card->info.type == QETH_CARD_TYPE_OSN ||
665 card->info.type == QETH_CARD_TYPE_OSM ||
666 card->info.type == QETH_CARD_TYPE_OSX) {
847a50fd 667 QETH_CARD_TEXT(card, 3, "setmcTYP");
4a71df50
FB		 668 return -EOPNOTSUPP;
669 }
847a50fd 670 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
8e98ac48 671 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 672 QETH_CARD_TEXT(card, 3, "setmcREC");
8e98ac48
UB		 673 return -ERESTARTSYS;
674 }
4a71df50
FB		 675 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
676 if (!rc)
677 rc = qeth_l2_send_setmac(card, addr->sa_data);
678 return rc;
679}
680
681static void qeth_l2_set_multicast_list(struct net_device *dev)
682{
509e2562 683 struct qeth_card *card = dev->ml_priv;
ccffad25 684 struct netdev_hw_addr *ha;
4a71df50
FB		 685
686 if (card->info.type == QETH_CARD_TYPE_OSN)
687 return ;
688
847a50fd 689 QETH_CARD_TEXT(card, 3, "setmulti");
8e98ac48
UB		 690 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
691 (card->state != CARD_STATE_UP))
692 return;
70919e23 693 qeth_l2_del_all_mc(card, 1);
4a71df50 694 spin_lock_bh(&card->mclock);
22bedad3
JP		 695 netdev_for_each_mc_addr(ha, dev)
696 qeth_l2_add_mc(card, ha->addr, 0);
7db2266a 697
32e7bfc4 698 netdev_for_each_uc_addr(ha, dev)
ccffad25 699 qeth_l2_add_mc(card, ha->addr, 1);
7db2266a 700
4a71df50
FB		 701 spin_unlock_bh(&card->mclock);
702 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
703 return;
704 qeth_setadp_promisc_mode(card);
705}
706
707static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
708{
709 int rc;
710 struct qeth_hdr *hdr = NULL;
711 int elements = 0;
509e2562 712 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 713 struct sk_buff *new_skb = skb;
714 int ipv = qeth_get_ip_version(skb);
ce73e10e 715 int cast_type = qeth_l2_get_cast_type(card, skb);
4a71df50
FB		 716 struct qeth_qdio_out_q *queue = card->qdio.out_qs
717 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
718 int tx_bytes = skb->len;
683d718a
FB		 719 int data_offset = -1;
720 int elements_needed = 0;
721 int hd_len = 0;
4a71df50 722
4a71df50
FB		 723 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
724 card->stats.tx_carrier_errors++;
725 goto tx_drop;
726 }
727
728 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
729 (skb->protocol == htons(ETH_P_IPV6)))
730 goto tx_drop;
731
732 if (card->options.performance_stats) {
733 card->perf_stats.outbound_cnt++;
734 card->perf_stats.outbound_start_time = qeth_get_micros();
735 }
736 netif_stop_queue(dev);
737
4a71df50
FB		 738 if (card->info.type == QETH_CARD_TYPE_OSN)
739 hdr = (struct qeth_hdr *)skb->data;
740 else {
64ef8957 741 if (card->info.type == QETH_CARD_TYPE_IQD) {
683d718a
FB		 742 new_skb = skb;
743 data_offset = ETH_HLEN;
744 hd_len = ETH_HLEN;
745 hdr = kmem_cache_alloc(qeth_core_header_cache,
746 GFP_ATOMIC);
747 if (!hdr)
748 goto tx_drop;
749 elements_needed++;
750 skb_reset_mac_header(new_skb);
751 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
752 hdr->hdr.l2.pkt_length = new_skb->len;
753 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
754 skb_mac_header(new_skb), ETH_HLEN);
755 } else {
756 /* create a clone with writeable headroom */
757 new_skb = skb_realloc_headroom(skb,
758 sizeof(struct qeth_hdr));
759 if (!new_skb)
760 goto tx_drop;
761 hdr = (struct qeth_hdr *)skb_push(new_skb,
f90b744e 762 sizeof(struct qeth_hdr));
683d718a
FB		 763 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
764 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
765 }
4a71df50
FB		 766 }
767
64ef8957 768 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
683d718a 769 elements_needed);
64ef8957
FB		 770 if (!elements) {
771 if (data_offset >= 0)
772 kmem_cache_free(qeth_core_header_cache, hdr);
773 goto tx_drop;
f61a0d05 774 }
4a71df50 775
51aa165c
FB		 776 if (card->info.type != QETH_CARD_TYPE_IQD) {
777 if (qeth_hdr_chk_and_bounce(new_skb,
778 sizeof(struct qeth_hdr_layer2)))
779 goto tx_drop;
4a71df50 780 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
64ef8957 781 elements);
51aa165c 782 } else
4a71df50 783 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
64ef8957 784 elements, data_offset, hd_len);
4a71df50
FB		 785 if (!rc) {
786 card->stats.tx_packets++;
787 card->stats.tx_bytes += tx_bytes;
788 if (new_skb != skb)
789 dev_kfree_skb_any(skb);
ec634fe3 790 rc = NETDEV_TX_OK;
4a71df50 791 } else {
683d718a
FB		 792 if (data_offset >= 0)
793 kmem_cache_free(qeth_core_header_cache, hdr);
794
4a71df50
FB		 795 if (rc == -EBUSY) {
796 if (new_skb != skb)
797 dev_kfree_skb_any(new_skb);
798 return NETDEV_TX_BUSY;
799 } else
800 goto tx_drop;
801 }
802
803 netif_wake_queue(dev);
804 if (card->options.performance_stats)
805 card->perf_stats.outbound_time += qeth_get_micros() -
806 card->perf_stats.outbound_start_time;
807 return rc;
808
809tx_drop:
810 card->stats.tx_dropped++;
811 card->stats.tx_errors++;
812 if ((new_skb != skb) && new_skb)
813 dev_kfree_skb_any(new_skb);
814 dev_kfree_skb_any(skb);
d0ec0f54 815 netif_wake_queue(dev);
4a71df50
FB		 816 return NETDEV_TX_OK;
817}
818
39423440 819static int __qeth_l2_open(struct net_device *dev)
4a71df50 820{
509e2562 821 struct qeth_card *card = dev->ml_priv;
a1c3ed4c 822 int rc = 0;
4a71df50 823
847a50fd 824 QETH_CARD_TEXT(card, 4, "qethopen");
39423440
UB		 825 if (card->state == CARD_STATE_UP)
826 return rc;
4a71df50
FB		 827 if (card->state != CARD_STATE_SOFTSETUP)
828 return -ENODEV;
829
830 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
831 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
847a50fd 832 QETH_CARD_TEXT(card, 4, "nomacadr");
4a71df50
FB		 833 return -EPERM;
834 }
835 card->data.state = CH_STATE_UP;
836 card->state = CARD_STATE_UP;
4a71df50
FB		 837 netif_start_queue(dev);
838
a1c3ed4c
FB		 839 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
840 napi_enable(&card->napi);
841 napi_schedule(&card->napi);
842 } else
843 rc = -EIO;
844 return rc;
4a71df50
FB		 845}
846
39423440
UB		 847static int qeth_l2_open(struct net_device *dev)
848{
849 struct qeth_card *card = dev->ml_priv;
850
851 QETH_CARD_TEXT(card, 5, "qethope_");
852 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
853 QETH_CARD_TEXT(card, 3, "openREC");
854 return -ERESTARTSYS;
855 }
856 return __qeth_l2_open(dev);
857}
858
4a71df50
FB		 859static int qeth_l2_stop(struct net_device *dev)
860{
509e2562 861 struct qeth_card *card = dev->ml_priv;
4a71df50 862
847a50fd 863 QETH_CARD_TEXT(card, 4, "qethstop");
4a71df50 864 netif_tx_disable(dev);
a1c3ed4c 865 if (card->state == CARD_STATE_UP) {
4a71df50 866 card->state = CARD_STATE_SOFTSETUP;
a1c3ed4c
FB		 867 napi_disable(&card->napi);
868 }
4a71df50
FB		 869 return 0;
870}
871
872static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
873{
874 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
875
876 INIT_LIST_HEAD(&card->vid_list);
877 INIT_LIST_HEAD(&card->mc_list);
878 card->options.layer2 = 1;
a1c3ed4c 879 card->discipline.start_poll = qeth_qdio_start_poll;
4a71df50 880 card->discipline.input_handler = (qdio_handler_t *)
a1c3ed4c 881 qeth_qdio_input_handler;
4a71df50
FB		 882 card->discipline.output_handler = (qdio_handler_t *)
883 qeth_qdio_output_handler;
884 card->discipline.recover = qeth_l2_recover;
885 return 0;
886}
887
888static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
889{
890 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
891
f2148565 892 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 893 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
894
70919e23 895 if (cgdev->state == CCWGROUP_ONLINE)
4a71df50 896 qeth_l2_set_offline(cgdev);
4a71df50
FB		 897
898 if (card->dev) {
899 unregister_netdev(card->dev);
900 card->dev = NULL;
901 }
4a71df50
FB		 902 return;
903}
904
0fc0b732 905static const struct ethtool_ops qeth_l2_ethtool_ops = {
4a71df50 906 .get_link = ethtool_op_get_link,
4a71df50
FB		 907 .get_strings = qeth_core_get_strings,
908 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 909 .get_sset_count = qeth_core_get_sset_count,
4a71df50 910 .get_drvinfo = qeth_core_get_drvinfo,
3f9975aa 911 .get_settings = qeth_core_ethtool_get_settings,
4a71df50
FB		 912};
913
0fc0b732 914static const struct ethtool_ops qeth_l2_osn_ops = {
4a71df50
FB		 915 .get_strings = qeth_core_get_strings,
916 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 917 .get_sset_count = qeth_core_get_sset_count,
4a71df50
FB		 918 .get_drvinfo = qeth_core_get_drvinfo,
919};
920
3d58cefd 921static const struct net_device_ops qeth_l2_netdev_ops = {
8403b13c
FB		 922 .ndo_open = qeth_l2_open,
923 .ndo_stop = qeth_l2_stop,
924 .ndo_get_stats = qeth_get_stats,
925 .ndo_start_xmit = qeth_l2_hard_start_xmit,
926 .ndo_validate_addr = eth_validate_addr,
927 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
928 .ndo_do_ioctl = qeth_l2_do_ioctl,
929 .ndo_set_mac_address = qeth_l2_set_mac_address,
930 .ndo_change_mtu = qeth_change_mtu,
931 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
932 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
933 .ndo_tx_timeout = qeth_tx_timeout,
934};
935
4a71df50
FB		 936static int qeth_l2_setup_netdev(struct qeth_card *card)
937{
938 switch (card->info.type) {
4a71df50
FB		 939 case QETH_CARD_TYPE_IQD:
940 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
941 break;
942 case QETH_CARD_TYPE_OSN:
943 card->dev = alloc_netdev(0, "osn%d", ether_setup);
944 card->dev->flags |= IFF_NOARP;
945 break;
946 default:
947 card->dev = alloc_etherdev(0);
948 }
949
950 if (!card->dev)
951 return -ENODEV;
952
509e2562 953 card->dev->ml_priv = card;
4a71df50 954 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
4a71df50 955 card->dev->mtu = card->info.initial_mtu;
8403b13c 956 card->dev->netdev_ops = &qeth_l2_netdev_ops;
4a71df50
FB		 957 if (card->info.type != QETH_CARD_TYPE_OSN)
958 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
959 else
960 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
961 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
962 card->info.broadcast_capable = 1;
963 qeth_l2_request_initial_mac(card);
964 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
a1c3ed4c 965 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
4a71df50
FB		 966 return register_netdev(card->dev);
967}
968
969static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
970{
971 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
972 int rc = 0;
973 enum qeth_card_states recover_flag;
974
975 BUG_ON(!card);
9dc48ccc 976 mutex_lock(&card->discipline_mutex);
c4949f07 977 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 978 QETH_DBF_TEXT(SETUP, 2, "setonlin");
979 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50 980
4a71df50 981 recover_flag = card->state;
4a71df50
FB		 982 rc = qeth_core_hardsetup_card(card);
983 if (rc) {
d11ba0c4 984 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
aa909224 985 rc = -ENODEV;
4a71df50
FB		 986 goto out_remove;
987 }
988
aa909224
UB		 989 if (!card->dev && qeth_l2_setup_netdev(card)) {
990 rc = -ENODEV;
4a71df50 991 goto out_remove;
aa909224 992 }
4a71df50
FB		 993
994 if (card->info.type != QETH_CARD_TYPE_OSN)
995 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
996
997 card->state = CARD_STATE_HARDSETUP;
a1c3ed4c 998 memset(&card->rx, 0, sizeof(struct qeth_rx));
4a71df50
FB		 999 qeth_print_status_message(card);
1000
1001 /* softsetup */
d11ba0c4 1002 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50
FB		 1003
1004 rc = qeth_send_startlan(card);
1005 if (rc) {
d11ba0c4 1006 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50 1007 if (rc == 0xe080) {
74eacdb9
FB		 1008 dev_warn(&card->gdev->dev,
1009 "The LAN is offline\n");
4a71df50 1010 card->lan_online = 0;
2b6203bb 1011 goto contin;
4a71df50 1012 }
aa909224 1013 rc = -ENODEV;
f2148565 1014 goto out_remove;
4a71df50
FB		 1015 } else
1016 card->lan_online = 1;
1017
2b6203bb 1018contin:
5113fec0
UB		 1019 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1020 (card->info.type == QETH_CARD_TYPE_OSX))
d64ecc22
EL		 1021 /* configure isolation level */
1022 qeth_set_access_ctrl_online(card);
5113fec0
UB		 1023
1024 if (card->info.type != QETH_CARD_TYPE_OSN &&
1025 card->info.type != QETH_CARD_TYPE_OSM)
70919e23 1026 qeth_l2_process_vlans(card);
4a71df50
FB		 1027
1028 netif_tx_disable(card->dev);
1029
1030 rc = qeth_init_qdio_queues(card);
1031 if (rc) {
d11ba0c4 1032 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
aa909224 1033 rc = -ENODEV;
4a71df50
FB		 1034 goto out_remove;
1035 }
1036 card->state = CARD_STATE_SOFTSETUP;
2b6203bb
UB		 1037 if (card->lan_online)
1038 netif_carrier_on(card->dev);
1039 else
1040 netif_carrier_off(card->dev);
4a71df50
FB		 1041
1042 qeth_set_allowed_threads(card, 0xffffffff, 0);
1043 if (recover_flag == CARD_STATE_RECOVER) {
1044 if (recovery_mode &&
1045 card->info.type != QETH_CARD_TYPE_OSN) {
39423440 1046 __qeth_l2_open(card->dev);
4a71df50
FB		 1047 } else {
1048 rtnl_lock();
1049 dev_open(card->dev);
1050 rtnl_unlock();
1051 }
1052 /* this also sets saved unicast addresses */
1053 qeth_l2_set_multicast_list(card->dev);
1054 }
1055 /* let user_space know that device is online */
1056 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
c4949f07 1057 mutex_unlock(&card->conf_mutex);
9dc48ccc 1058 mutex_unlock(&card->discipline_mutex);
4a71df50 1059 return 0;
aa909224 1060
4a71df50 1061out_remove:
4a71df50
FB		 1062 qeth_l2_stop_card(card, 0);
1063 ccw_device_set_offline(CARD_DDEV(card));
1064 ccw_device_set_offline(CARD_WDEV(card));
1065 ccw_device_set_offline(CARD_RDEV(card));
1066 if (recover_flag == CARD_STATE_RECOVER)
1067 card->state = CARD_STATE_RECOVER;
1068 else
1069 card->state = CARD_STATE_DOWN;
c4949f07 1070 mutex_unlock(&card->conf_mutex);
9dc48ccc 1071 mutex_unlock(&card->discipline_mutex);
aa909224 1072 return rc;
4a71df50
FB		 1073}
1074
1075static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1076{
1077 return __qeth_l2_set_online(gdev, 0);
1078}
1079
1080static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1081 int recovery_mode)
1082{
1083 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1084 int rc = 0, rc2 = 0, rc3 = 0;
1085 enum qeth_card_states recover_flag;
1086
9dc48ccc 1087 mutex_lock(&card->discipline_mutex);
c4949f07 1088 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 1089 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1090 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1091
1092 if (card->dev && netif_carrier_ok(card->dev))
1093 netif_carrier_off(card->dev);
1094 recover_flag = card->state;
0f5623c9 1095 qeth_l2_stop_card(card, recovery_mode);
4a71df50
FB		 1096 rc = ccw_device_set_offline(CARD_DDEV(card));
1097 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1098 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1099 if (!rc)
1100 rc = (rc2) ? rc2 : rc3;
1101 if (rc)
d11ba0c4 1102 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 1103 if (recover_flag == CARD_STATE_UP)
1104 card->state = CARD_STATE_RECOVER;
1105 /* let user_space know that device is offline */
1106 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
c4949f07 1107 mutex_unlock(&card->conf_mutex);
9dc48ccc 1108 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 1109 return 0;
1110}
1111
1112static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1113{
1114 return __qeth_l2_set_offline(cgdev, 0);
1115}
1116
1117static int qeth_l2_recover(void *ptr)
1118{
1119 struct qeth_card *card;
1120 int rc = 0;
1121
1122 card = (struct qeth_card *) ptr;
847a50fd 1123 QETH_CARD_TEXT(card, 2, "recover1");
4a71df50
FB		 1124 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1125 return 0;
847a50fd 1126 QETH_CARD_TEXT(card, 2, "recover2");
74eacdb9
FB		 1127 dev_warn(&card->gdev->dev,
1128 "A recovery process has been started for the device\n");
4a71df50
FB		 1129 __qeth_l2_set_offline(card->gdev, 1);
1130 rc = __qeth_l2_set_online(card->gdev, 1);
4a71df50 1131 if (!rc)
74eacdb9
FB		 1132 dev_info(&card->gdev->dev,
1133 "Device successfully recovered!\n");
28a7e4c9 1134 else {
869da90b
UB		 1135 rtnl_lock();
1136 dev_close(card->dev);
1137 rtnl_unlock();
74eacdb9
FB		 1138 dev_warn(&card->gdev->dev, "The qeth device driver "
1139 "failed to recover an error on the device\n");
28a7e4c9 1140 }
a1c3ed4c
FB		 1141 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1142 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
4a71df50
FB		 1143 return 0;
1144}
1145
1146static int __init qeth_l2_init(void)
1147{
74eacdb9 1148 pr_info("register layer 2 discipline\n");
4a71df50
FB		 1149 return 0;
1150}
1151
1152static void __exit qeth_l2_exit(void)
1153{
74eacdb9 1154 pr_info("unregister layer 2 discipline\n");
4a71df50
FB		 1155}
1156
1157static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1158{
1159 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1160 qeth_qdio_clear_card(card, 0);
1161 qeth_clear_qdio_buffers(card);
1162}
1163
bbcfcdc8
FB		 1164static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1165{
1166 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1167
1168 if (card->dev)
1169 netif_device_detach(card->dev);
1170 qeth_set_allowed_threads(card, 0, 1);
1171 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1172 if (gdev->state == CCWGROUP_OFFLINE)
1173 return 0;
1174 if (card->state == CARD_STATE_UP) {
bbcfcdc8
FB		 1175 __qeth_l2_set_offline(card->gdev, 1);
1176 } else
1177 __qeth_l2_set_offline(card->gdev, 0);
1178 return 0;
1179}
1180
1181static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1182{
1183 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1184 int rc = 0;
1185
1186 if (gdev->state == CCWGROUP_OFFLINE)
1187 goto out;
1188
1189 if (card->state == CARD_STATE_RECOVER) {
1190 rc = __qeth_l2_set_online(card->gdev, 1);
1191 if (rc) {
869da90b
UB		 1192 rtnl_lock();
1193 dev_close(card->dev);
1194 rtnl_unlock();
bbcfcdc8
FB		 1195 }
1196 } else
1197 rc = __qeth_l2_set_online(card->gdev, 0);
1198out:
1199 qeth_set_allowed_threads(card, 0xffffffff, 0);
1200 if (card->dev)
1201 netif_device_attach(card->dev);
1202 if (rc)
1203 dev_warn(&card->gdev->dev, "The qeth device driver "
1204 "failed to recover an error on the device\n");
1205 return rc;
1206}
1207
4a71df50
FB		 1208struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1209 .probe = qeth_l2_probe_device,
1210 .remove = qeth_l2_remove_device,
1211 .set_online = qeth_l2_set_online,
1212 .set_offline = qeth_l2_set_offline,
1213 .shutdown = qeth_l2_shutdown,
bbcfcdc8
FB		 1214 .freeze = qeth_l2_pm_suspend,
1215 .thaw = qeth_l2_pm_resume,
1216 .restore = qeth_l2_pm_resume,
4a71df50
FB		 1217};
1218EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1219
1220static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1221 struct qeth_cmd_buffer *iob)
1222{
1223 unsigned long flags;
1224 int rc = 0;
1225
847a50fd 1226 QETH_CARD_TEXT(card, 5, "osndctrd");
4a71df50
FB		 1227
1228 wait_event(card->wait_q,
1229 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1230 qeth_prepare_control_data(card, len, iob);
847a50fd 1231 QETH_CARD_TEXT(card, 6, "osnoirqp");
4a71df50
FB		 1232 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1233 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1234 (addr_t) iob, 0, 0);
1235 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1236 if (rc) {
14cc21b6 1237 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
4a71df50 1238 "ccw_device_start rc = %i\n", rc);
847a50fd 1239 QETH_CARD_TEXT_(card, 2, " err%d", rc);
4a71df50
FB		 1240 qeth_release_buffer(iob->channel, iob);
1241 atomic_set(&card->write.irq_pending, 0);
1242 wake_up(&card->wait_q);
1243 }
1244 return rc;
1245}
1246
1247static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1248 struct qeth_cmd_buffer *iob, int data_len)
1249{
1250 u16 s1, s2;
1251
847a50fd 1252 QETH_CARD_TEXT(card, 4, "osndipa");
4a71df50
FB		 1253
1254 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1255 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1256 s2 = (u16)data_len;
1257 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1258 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1259 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1260 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1261 return qeth_osn_send_control_data(card, s1, iob);
1262}
1263
1264int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1265{
1266 struct qeth_cmd_buffer *iob;
1267 struct qeth_card *card;
1268 int rc;
1269
4a71df50
FB		 1270 if (!dev)
1271 return -ENODEV;
509e2562 1272 card = dev->ml_priv;
4a71df50
FB		 1273 if (!card)
1274 return -ENODEV;
847a50fd 1275 QETH_CARD_TEXT(card, 2, "osnsdmc");
4a71df50
FB		 1276 if ((card->state != CARD_STATE_UP) &&
1277 (card->state != CARD_STATE_SOFTSETUP))
1278 return -ENODEV;
1279 iob = qeth_wait_for_buffer(&card->write);
1280 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1281 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1282 return rc;
1283}
1284EXPORT_SYMBOL(qeth_osn_assist);
1285
1286int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1287 int (*assist_cb)(struct net_device *, void *),
1288 int (*data_cb)(struct sk_buff *))
1289{
1290 struct qeth_card *card;
1291
4a71df50
FB		 1292 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1293 if (*dev == NULL)
1294 return -ENODEV;
509e2562 1295 card = (*dev)->ml_priv;
4a71df50
FB		 1296 if (!card)
1297 return -ENODEV;
847a50fd 1298 QETH_CARD_TEXT(card, 2, "osnreg");
4a71df50
FB		 1299 if ((assist_cb == NULL) || (data_cb == NULL))
1300 return -EINVAL;
1301 card->osn_info.assist_cb = assist_cb;
1302 card->osn_info.data_cb = data_cb;
1303 return 0;
1304}
1305EXPORT_SYMBOL(qeth_osn_register);
1306
1307void qeth_osn_deregister(struct net_device *dev)
1308{
1309 struct qeth_card *card;
1310
4a71df50
FB		 1311 if (!dev)
1312 return;
509e2562 1313 card = dev->ml_priv;
4a71df50
FB		 1314 if (!card)
1315 return;
847a50fd 1316 QETH_CARD_TEXT(card, 2, "osndereg");
4a71df50
FB		 1317 card->osn_info.assist_cb = NULL;
1318 card->osn_info.data_cb = NULL;
1319 return;
1320}
1321EXPORT_SYMBOL(qeth_osn_deregister);
1322
1323module_init(qeth_l2_init);
1324module_exit(qeth_l2_exit);
1325MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1326MODULE_DESCRIPTION("qeth layer 2 discipline");
1327MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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