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qeth: new message if OLM limit is reached
[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:
59 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
60 !card->info.guestlan)
61 return 1;
62 return 0;
63 break;
64 case SIOCGMIIPHY:
65 mii_data = if_mii(rq);
66 mii_data->phy_id = 0;
67 break;
68 case SIOCGMIIREG:
69 mii_data = if_mii(rq);
70 if (mii_data->phy_id != 0)
71 rc = -EINVAL;
72 else
73 mii_data->val_out = qeth_mdio_read(dev,
74 mii_data->phy_id, mii_data->reg_num);
75 break;
76 default:
77 rc = -EOPNOTSUPP;
78 }
79 if (rc)
d11ba0c4 80 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
4a71df50
FB		 81 return rc;
82}
83
84static int qeth_l2_verify_dev(struct net_device *dev)
85{
86 struct qeth_card *card;
87 unsigned long flags;
88 int rc = 0;
89
90 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
91 list_for_each_entry(card, &qeth_core_card_list.list, list) {
92 if (card->dev == dev) {
93 rc = QETH_REAL_CARD;
94 break;
95 }
96 }
97 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
98
99 return rc;
100}
101
102static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
103{
104 struct qeth_card *card;
105 struct net_device *ndev;
f06f6f32 106 __u16 temp_dev_no;
4a71df50 107 unsigned long flags;
f06f6f32 108 struct ccw_dev_id read_devid;
4a71df50
FB		 109
110 ndev = NULL;
111 memcpy(&temp_dev_no, read_dev_no, 2);
112 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
113 list_for_each_entry(card, &qeth_core_card_list.list, list) {
f06f6f32
CH		 114 ccw_device_get_id(CARD_RDEV(card), &read_devid);
115 if (read_devid.devno == temp_dev_no) {
4a71df50
FB		 116 ndev = card->dev;
117 break;
118 }
119 }
120 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
121 return ndev;
122}
123
124static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
125 struct qeth_reply *reply,
126 unsigned long data)
127{
128 struct qeth_ipa_cmd *cmd;
129 __u8 *mac;
130
d11ba0c4 131 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
4a71df50
FB		 132 cmd = (struct qeth_ipa_cmd *) data;
133 mac = &cmd->data.setdelmac.mac[0];
134 /* MAC already registered, needed in couple/uncouple case */
0666eb06 135 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
7c510e4b
JB		 136 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
137 mac, QETH_CARD_IFNAME(card));
4a71df50
FB		 138 cmd->hdr.return_code = 0;
139 }
140 if (cmd->hdr.return_code)
7c510e4b
JB		 141 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
142 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
4a71df50
FB		 143 return 0;
144}
145
146static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
147{
d11ba0c4 148 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
4a71df50
FB		 149 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
150 qeth_l2_send_setgroupmac_cb);
151}
152
153static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
154 struct qeth_reply *reply,
155 unsigned long data)
156{
157 struct qeth_ipa_cmd *cmd;
158 __u8 *mac;
159
d11ba0c4 160 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
4a71df50
FB		 161 cmd = (struct qeth_ipa_cmd *) data;
162 mac = &cmd->data.setdelmac.mac[0];
163 if (cmd->hdr.return_code)
7c510e4b
JB		 164 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
165 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
4a71df50
FB		 166 return 0;
167}
168
169static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
170{
d11ba0c4 171 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
4a71df50
FB		 172 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
173 qeth_l2_send_delgroupmac_cb);
174}
175
7db2266a 176static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
4a71df50
FB		 177{
178 struct qeth_mc_mac *mc;
7db2266a 179 int rc;
4a71df50
FB		 180
181 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
182
14cc21b6 183 if (!mc)
4a71df50 184 return;
4a71df50
FB		 185
186 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
187 mc->mc_addrlen = OSA_ADDR_LEN;
7db2266a
FB		 188 mc->is_vmac = vmac;
189
190 if (vmac) {
191 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
192 NULL);
193 } else {
194 rc = qeth_l2_send_setgroupmac(card, mac);
195 }
4a71df50 196
7db2266a 197 if (!rc)
4a71df50
FB		 198 list_add_tail(&mc->list, &card->mc_list);
199 else
200 kfree(mc);
201}
202
203static void qeth_l2_del_all_mc(struct qeth_card *card)
204{
205 struct qeth_mc_mac *mc, *tmp;
206
207 spin_lock_bh(&card->mclock);
208 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
7db2266a
FB		 209 if (mc->is_vmac)
210 qeth_l2_send_setdelmac(card, mc->mc_addr,
211 IPA_CMD_DELVMAC, NULL);
212 else
213 qeth_l2_send_delgroupmac(card, mc->mc_addr);
4a71df50
FB		 214 list_del(&mc->list);
215 kfree(mc);
216 }
217 spin_unlock_bh(&card->mclock);
218}
219
ce73e10e
KDW		 220static inline int qeth_l2_get_cast_type(struct qeth_card *card,
221 struct sk_buff *skb)
4a71df50 222{
ce73e10e
KDW		 223 if (card->info.type == QETH_CARD_TYPE_OSN)
224 return RTN_UNSPEC;
225 if (is_broadcast_ether_addr(skb->data))
226 return RTN_BROADCAST;
227 if (is_multicast_ether_addr(skb->data))
228 return RTN_MULTICAST;
229 return RTN_UNSPEC;
4a71df50
FB		 230}
231
232static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
233 struct sk_buff *skb, int ipv, int cast_type)
234{
683d718a 235 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
4a71df50
FB		 236
237 memset(hdr, 0, sizeof(struct qeth_hdr));
238 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
239
240 /* set byte byte 3 to casting flags */
241 if (cast_type == RTN_MULTICAST)
242 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
243 else if (cast_type == RTN_BROADCAST)
244 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
245 else
ce73e10e 246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
4a71df50
FB		 247
248 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
249 /* VSWITCH relies on the VLAN
250 * information to be present in
251 * the QDIO header */
252 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
254 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
255 }
256}
257
258static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
259 struct qeth_reply *reply, unsigned long data)
260{
261 struct qeth_ipa_cmd *cmd;
262
d11ba0c4 263 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
4a71df50
FB		 264 cmd = (struct qeth_ipa_cmd *) data;
265 if (cmd->hdr.return_code) {
14cc21b6 266 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
4a71df50
FB		 267 "Continuing\n", cmd->data.setdelvlan.vlan_id,
268 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
d11ba0c4
PT		 269 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
270 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
271 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 272 }
273 return 0;
274}
275
276static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
277 enum qeth_ipa_cmds ipacmd)
278{
279 struct qeth_ipa_cmd *cmd;
280 struct qeth_cmd_buffer *iob;
281
d11ba0c4 282 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
4a71df50
FB		 283 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
284 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
285 cmd->data.setdelvlan.vlan_id = i;
286 return qeth_send_ipa_cmd(card, iob,
287 qeth_l2_send_setdelvlan_cb, NULL);
288}
289
290static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
291{
292 struct qeth_vlan_vid *id;
d11ba0c4 293 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
4a71df50
FB		 294 spin_lock_bh(&card->vlanlock);
295 list_for_each_entry(id, &card->vid_list, list) {
296 if (clear)
297 qeth_l2_send_setdelvlan(card, id->vid,
298 IPA_CMD_DELVLAN);
299 else
300 qeth_l2_send_setdelvlan(card, id->vid,
301 IPA_CMD_SETVLAN);
302 }
303 spin_unlock_bh(&card->vlanlock);
304}
305
306static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
307{
509e2562 308 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 309 struct qeth_vlan_vid *id;
310
d11ba0c4 311 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
8e98ac48
UB		 312 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
313 QETH_DBF_TEXT(TRACE, 3, "aidREC");
314 return;
315 }
4a71df50
FB		 316 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
317 if (id) {
318 id->vid = vid;
319 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
320 spin_lock_bh(&card->vlanlock);
321 list_add_tail(&id->list, &card->vid_list);
322 spin_unlock_bh(&card->vlanlock);
4a71df50
FB		 323 }
324}
325
326static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
327{
328 struct qeth_vlan_vid *id, *tmpid = NULL;
509e2562 329 struct qeth_card *card = dev->ml_priv;
4a71df50 330
d11ba0c4 331 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
8e98ac48
UB		 332 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
333 QETH_DBF_TEXT(TRACE, 3, "kidREC");
334 return;
335 }
4a71df50
FB		 336 spin_lock_bh(&card->vlanlock);
337 list_for_each_entry(id, &card->vid_list, list) {
338 if (id->vid == vid) {
339 list_del(&id->list);
340 tmpid = id;
341 break;
342 }
343 }
344 spin_unlock_bh(&card->vlanlock);
345 if (tmpid) {
346 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
347 kfree(tmpid);
348 }
349 qeth_l2_set_multicast_list(card->dev);
350}
351
352static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
353{
354 int rc = 0;
355
d11ba0c4
PT		 356 QETH_DBF_TEXT(SETUP , 2, "stopcard");
357 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 358
359 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 360 if (card->read.state == CH_STATE_UP &&
361 card->write.state == CH_STATE_UP &&
362 (card->state == CARD_STATE_UP)) {
363 if (recovery_mode &&
364 card->info.type != QETH_CARD_TYPE_OSN) {
365 qeth_l2_stop(card->dev);
366 } else {
367 rtnl_lock();
368 dev_close(card->dev);
369 rtnl_unlock();
370 }
932e1583
KDW		 371 if (!card->use_hard_stop ||
372 recovery_mode) {
4a71df50
FB		 373 __u8 *mac = &card->dev->dev_addr[0];
374 rc = qeth_l2_send_delmac(card, mac);
d11ba0c4 375 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
4a71df50
FB		 376 }
377 card->state = CARD_STATE_SOFTSETUP;
378 }
379 if (card->state == CARD_STATE_SOFTSETUP) {
380 qeth_l2_process_vlans(card, 1);
932e1583
KDW		 381 if (!card->use_hard_stop ||
382 recovery_mode)
28a7e4c9 383 qeth_l2_del_all_mc(card);
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 }
397 card->use_hard_stop = 0;
398 return rc;
399}
400
401static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
402 struct qeth_qdio_buffer *buf, int index)
403{
404 struct qdio_buffer_element *element;
405 struct sk_buff *skb;
406 struct qeth_hdr *hdr;
407 int offset;
408 unsigned int len;
409
410 /* get first element of current buffer */
411 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
412 offset = 0;
413 if (card->options.performance_stats)
414 card->perf_stats.bufs_rec++;
415 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
416 &offset, &hdr))) {
417 skb->dev = card->dev;
418 /* is device UP ? */
419 if (!(card->dev->flags & IFF_UP)) {
420 dev_kfree_skb_any(skb);
421 continue;
422 }
423
424 switch (hdr->hdr.l2.id) {
425 case QETH_HEADER_TYPE_LAYER2:
426 skb->pkt_type = PACKET_HOST;
427 skb->protocol = eth_type_trans(skb, skb->dev);
428 if (card->options.checksum_type == NO_CHECKSUMMING)
429 skb->ip_summed = CHECKSUM_UNNECESSARY;
430 else
431 skb->ip_summed = CHECKSUM_NONE;
12883725
UB		 432 if (skb->protocol == htons(ETH_P_802_2))
433 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
4a71df50
FB		 434 len = skb->len;
435 netif_rx(skb);
436 break;
437 case QETH_HEADER_TYPE_OSN:
2d488c2f
UB		 438 if (card->info.type == QETH_CARD_TYPE_OSN) {
439 skb_push(skb, sizeof(struct qeth_hdr));
440 skb_copy_to_linear_data(skb, hdr,
4a71df50 441 sizeof(struct qeth_hdr));
2d488c2f
UB		 442 len = skb->len;
443 card->osn_info.data_cb(skb);
444 break;
445 }
446 /* else unknown */
4a71df50
FB		 447 default:
448 dev_kfree_skb_any(skb);
d11ba0c4
PT		 449 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
450 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 451 continue;
452 }
4a71df50
FB		 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 485 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
0666eb06
UB		 486 switch (cmd->hdr.return_code) {
487 case IPA_RC_L2_DUP_MAC:
488 case IPA_RC_L2_DUP_LAYER3_MAC:
489 dev_warn(&card->gdev->dev,
d998ab0b
HS		 490 "MAC address %pM already exists\n",
491 card->dev->dev_addr);
0666eb06
UB		 492 break;
493 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
494 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
495 dev_warn(&card->gdev->dev,
d998ab0b
HS		 496 "MAC address %pM is not authorized\n",
497 card->dev->dev_addr);
0666eb06
UB		 498 break;
499 default:
500 break;
501 }
4a71df50
FB		 502 cmd->hdr.return_code = -EIO;
503 } else {
504 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
505 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
506 OSA_ADDR_LEN);
74eacdb9 507 dev_info(&card->gdev->dev,
d998ab0b
HS		 508 "MAC address %pM successfully registered on device %s\n",
509 card->dev->dev_addr, card->dev->name);
4a71df50
FB		 510 }
511 return 0;
512}
513
514static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
515{
d11ba0c4 516 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
4a71df50
FB		 517 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
518 qeth_l2_send_setmac_cb);
519}
520
521static int qeth_l2_send_delmac_cb(struct qeth_card *card,
522 struct qeth_reply *reply,
523 unsigned long data)
524{
525 struct qeth_ipa_cmd *cmd;
526
d11ba0c4 527 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
4a71df50
FB		 528 cmd = (struct qeth_ipa_cmd *) data;
529 if (cmd->hdr.return_code) {
d11ba0c4 530 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 531 cmd->hdr.return_code = -EIO;
532 return 0;
533 }
534 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
535
536 return 0;
537}
538
539static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
540{
d11ba0c4 541 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
4a71df50
FB		 542 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
543 return 0;
544 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
545 qeth_l2_send_delmac_cb);
546}
547
548static int qeth_l2_request_initial_mac(struct qeth_card *card)
549{
550 int rc = 0;
551 char vendor_pre[] = {0x02, 0x00, 0x00};
552
d11ba0c4
PT		 553 QETH_DBF_TEXT(SETUP, 2, "doL2init");
554 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
4a71df50
FB		 555
556 rc = qeth_query_setadapterparms(card);
557 if (rc) {
14cc21b6
FB		 558 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
559 "device %s: x%x\n", CARD_BUS_ID(card), rc);
4a71df50
FB		 560 }
561
f1d58672
UB		 562 if ((card->info.type == QETH_CARD_TYPE_IQD) ||
563 (card->info.guestlan)) {
4a71df50
FB		 564 rc = qeth_setadpparms_change_macaddr(card);
565 if (rc) {
14cc21b6
FB		 566 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
567 "device %s: x%x\n", CARD_BUS_ID(card), rc);
d11ba0c4 568 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 569 return rc;
570 }
d11ba0c4 571 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
4a71df50
FB		 572 } else {
573 random_ether_addr(card->dev->dev_addr);
574 memcpy(card->dev->dev_addr, vendor_pre, 3);
575 }
576 return 0;
577}
578
579static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
580{
581 struct sockaddr *addr = p;
509e2562 582 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 583 int rc = 0;
584
d11ba0c4 585 QETH_DBF_TEXT(TRACE, 3, "setmac");
4a71df50
FB		 586
587 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
d11ba0c4 588 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
4a71df50
FB		 589 return -EOPNOTSUPP;
590 }
591
592 if (card->info.type == QETH_CARD_TYPE_OSN) {
d11ba0c4 593 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
4a71df50
FB		 594 return -EOPNOTSUPP;
595 }
d11ba0c4
PT		 596 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
597 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
8e98ac48
UB		 598 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
599 QETH_DBF_TEXT(TRACE, 3, "setmcREC");
600 return -ERESTARTSYS;
601 }
4a71df50
FB		 602 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
603 if (!rc)
604 rc = qeth_l2_send_setmac(card, addr->sa_data);
605 return rc;
606}
607
608static void qeth_l2_set_multicast_list(struct net_device *dev)
609{
509e2562 610 struct qeth_card *card = dev->ml_priv;
ccffad25 611 struct netdev_hw_addr *ha;
4a71df50
FB		 612
613 if (card->info.type == QETH_CARD_TYPE_OSN)
614 return ;
615
d11ba0c4 616 QETH_DBF_TEXT(TRACE, 3, "setmulti");
8e98ac48
UB		 617 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
618 (card->state != CARD_STATE_UP))
619 return;
4a71df50
FB		 620 qeth_l2_del_all_mc(card);
621 spin_lock_bh(&card->mclock);
22bedad3
JP		 622 netdev_for_each_mc_addr(ha, dev)
623 qeth_l2_add_mc(card, ha->addr, 0);
7db2266a 624
32e7bfc4 625 netdev_for_each_uc_addr(ha, dev)
ccffad25 626 qeth_l2_add_mc(card, ha->addr, 1);
7db2266a 627
4a71df50
FB		 628 spin_unlock_bh(&card->mclock);
629 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
630 return;
631 qeth_setadp_promisc_mode(card);
632}
633
634static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
635{
636 int rc;
637 struct qeth_hdr *hdr = NULL;
638 int elements = 0;
509e2562 639 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 640 struct sk_buff *new_skb = skb;
641 int ipv = qeth_get_ip_version(skb);
ce73e10e 642 int cast_type = qeth_l2_get_cast_type(card, skb);
4a71df50
FB		 643 struct qeth_qdio_out_q *queue = card->qdio.out_qs
644 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
645 int tx_bytes = skb->len;
683d718a
FB		 646 int data_offset = -1;
647 int elements_needed = 0;
648 int hd_len = 0;
4a71df50 649
4a71df50
FB		 650 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
651 card->stats.tx_carrier_errors++;
652 goto tx_drop;
653 }
654
655 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
656 (skb->protocol == htons(ETH_P_IPV6)))
657 goto tx_drop;
658
659 if (card->options.performance_stats) {
660 card->perf_stats.outbound_cnt++;
661 card->perf_stats.outbound_start_time = qeth_get_micros();
662 }
663 netif_stop_queue(dev);
664
4a71df50
FB		 665 if (card->info.type == QETH_CARD_TYPE_OSN)
666 hdr = (struct qeth_hdr *)skb->data;
667 else {
64ef8957 668 if (card->info.type == QETH_CARD_TYPE_IQD) {
683d718a
FB		 669 new_skb = skb;
670 data_offset = ETH_HLEN;
671 hd_len = ETH_HLEN;
672 hdr = kmem_cache_alloc(qeth_core_header_cache,
673 GFP_ATOMIC);
674 if (!hdr)
675 goto tx_drop;
676 elements_needed++;
677 skb_reset_mac_header(new_skb);
678 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
679 hdr->hdr.l2.pkt_length = new_skb->len;
680 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
681 skb_mac_header(new_skb), ETH_HLEN);
682 } else {
683 /* create a clone with writeable headroom */
684 new_skb = skb_realloc_headroom(skb,
685 sizeof(struct qeth_hdr));
686 if (!new_skb)
687 goto tx_drop;
688 hdr = (struct qeth_hdr *)skb_push(new_skb,
f90b744e 689 sizeof(struct qeth_hdr));
683d718a
FB		 690 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
691 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
692 }
4a71df50
FB		 693 }
694
64ef8957 695 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
683d718a 696 elements_needed);
64ef8957
FB		 697 if (!elements) {
698 if (data_offset >= 0)
699 kmem_cache_free(qeth_core_header_cache, hdr);
700 goto tx_drop;
f61a0d05 701 }
4a71df50
FB		 702
703 if (card->info.type != QETH_CARD_TYPE_IQD)
704 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
64ef8957 705 elements);
4a71df50
FB		 706 else
707 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
64ef8957 708 elements, data_offset, hd_len);
4a71df50
FB		 709 if (!rc) {
710 card->stats.tx_packets++;
711 card->stats.tx_bytes += tx_bytes;
712 if (new_skb != skb)
713 dev_kfree_skb_any(skb);
ec634fe3 714 rc = NETDEV_TX_OK;
4a71df50 715 } else {
683d718a
FB		 716 if (data_offset >= 0)
717 kmem_cache_free(qeth_core_header_cache, hdr);
718
4a71df50
FB		 719 if (rc == -EBUSY) {
720 if (new_skb != skb)
721 dev_kfree_skb_any(new_skb);
722 return NETDEV_TX_BUSY;
723 } else
724 goto tx_drop;
725 }
726
727 netif_wake_queue(dev);
728 if (card->options.performance_stats)
729 card->perf_stats.outbound_time += qeth_get_micros() -
730 card->perf_stats.outbound_start_time;
731 return rc;
732
733tx_drop:
734 card->stats.tx_dropped++;
735 card->stats.tx_errors++;
736 if ((new_skb != skb) && new_skb)
737 dev_kfree_skb_any(new_skb);
738 dev_kfree_skb_any(skb);
d0ec0f54 739 netif_wake_queue(dev);
4a71df50
FB		 740 return NETDEV_TX_OK;
741}
742
743static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
779e6e1c 744 unsigned int qdio_err, unsigned int queue,
4a71df50
FB		 745 int first_element, int count, unsigned long card_ptr)
746{
747 struct net_device *net_dev;
748 struct qeth_card *card;
749 struct qeth_qdio_buffer *buffer;
750 int index;
751 int i;
752
4a71df50
FB		 753 card = (struct qeth_card *) card_ptr;
754 net_dev = card->dev;
755 if (card->options.performance_stats) {
756 card->perf_stats.inbound_cnt++;
757 card->perf_stats.inbound_start_time = qeth_get_micros();
758 }
779e6e1c
JG		 759 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
760 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
761 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
762 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
763 count);
764 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
765 qeth_schedule_recovery(card);
766 return;
4a71df50
FB		 767 }
768 for (i = first_element; i < (first_element + count); ++i) {
769 index = i % QDIO_MAX_BUFFERS_PER_Q;
770 buffer = &card->qdio.in_q->bufs[index];
779e6e1c 771 if (!(qdio_err &&
76b11f8e
UB		 772 qeth_check_qdio_errors(card, buffer->buffer, qdio_err,
773 "qinerr")))
4a71df50
FB		 774 qeth_l2_process_inbound_buffer(card, buffer, index);
775 /* clear buffer and give back to hardware */
776 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
777 qeth_queue_input_buffer(card, index);
778 }
779 if (card->options.performance_stats)
780 card->perf_stats.inbound_time += qeth_get_micros() -
781 card->perf_stats.inbound_start_time;
782}
783
784static int qeth_l2_open(struct net_device *dev)
785{
509e2562 786 struct qeth_card *card = dev->ml_priv;
4a71df50 787
d11ba0c4 788 QETH_DBF_TEXT(TRACE, 4, "qethopen");
4a71df50
FB		 789 if (card->state != CARD_STATE_SOFTSETUP)
790 return -ENODEV;
791
792 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
793 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
d11ba0c4 794 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
4a71df50
FB		 795 return -EPERM;
796 }
797 card->data.state = CH_STATE_UP;
798 card->state = CARD_STATE_UP;
4a71df50
FB		 799 netif_start_queue(dev);
800
801 if (!card->lan_online && netif_carrier_ok(dev))
802 netif_carrier_off(dev);
803 return 0;
804}
805
806
807static int qeth_l2_stop(struct net_device *dev)
808{
509e2562 809 struct qeth_card *card = dev->ml_priv;
4a71df50 810
d11ba0c4 811 QETH_DBF_TEXT(TRACE, 4, "qethstop");
4a71df50 812 netif_tx_disable(dev);
4a71df50
FB		 813 if (card->state == CARD_STATE_UP)
814 card->state = CARD_STATE_SOFTSETUP;
815 return 0;
816}
817
818static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
819{
820 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
821
822 INIT_LIST_HEAD(&card->vid_list);
823 INIT_LIST_HEAD(&card->mc_list);
824 card->options.layer2 = 1;
825 card->discipline.input_handler = (qdio_handler_t *)
826 qeth_l2_qdio_input_handler;
827 card->discipline.output_handler = (qdio_handler_t *)
828 qeth_qdio_output_handler;
829 card->discipline.recover = qeth_l2_recover;
830 return 0;
831}
832
833static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
834{
835 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
836
f2148565 837 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 838 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
839
840 if (cgdev->state == CCWGROUP_ONLINE) {
841 card->use_hard_stop = 1;
842 qeth_l2_set_offline(cgdev);
843 }
844
845 if (card->dev) {
846 unregister_netdev(card->dev);
847 card->dev = NULL;
848 }
849
850 qeth_l2_del_all_mc(card);
851 return;
852}
853
0fc0b732 854static const struct ethtool_ops qeth_l2_ethtool_ops = {
4a71df50 855 .get_link = ethtool_op_get_link,
4a71df50
FB		 856 .get_strings = qeth_core_get_strings,
857 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 858 .get_sset_count = qeth_core_get_sset_count,
4a71df50 859 .get_drvinfo = qeth_core_get_drvinfo,
3f9975aa 860 .get_settings = qeth_core_ethtool_get_settings,
4a71df50
FB		 861};
862
0fc0b732 863static const struct ethtool_ops qeth_l2_osn_ops = {
4a71df50
FB		 864 .get_strings = qeth_core_get_strings,
865 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 866 .get_sset_count = qeth_core_get_sset_count,
4a71df50
FB		 867 .get_drvinfo = qeth_core_get_drvinfo,
868};
869
3d58cefd 870static const struct net_device_ops qeth_l2_netdev_ops = {
8403b13c
FB		 871 .ndo_open = qeth_l2_open,
872 .ndo_stop = qeth_l2_stop,
873 .ndo_get_stats = qeth_get_stats,
874 .ndo_start_xmit = qeth_l2_hard_start_xmit,
875 .ndo_validate_addr = eth_validate_addr,
876 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
877 .ndo_do_ioctl = qeth_l2_do_ioctl,
878 .ndo_set_mac_address = qeth_l2_set_mac_address,
879 .ndo_change_mtu = qeth_change_mtu,
880 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
881 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
882 .ndo_tx_timeout = qeth_tx_timeout,
883};
884
4a71df50
FB		 885static int qeth_l2_setup_netdev(struct qeth_card *card)
886{
887 switch (card->info.type) {
888 case QETH_CARD_TYPE_OSAE:
889 card->dev = alloc_etherdev(0);
890 break;
891 case QETH_CARD_TYPE_IQD:
892 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
893 break;
894 case QETH_CARD_TYPE_OSN:
895 card->dev = alloc_netdev(0, "osn%d", ether_setup);
896 card->dev->flags |= IFF_NOARP;
897 break;
898 default:
899 card->dev = alloc_etherdev(0);
900 }
901
902 if (!card->dev)
903 return -ENODEV;
904
509e2562 905 card->dev->ml_priv = card;
4a71df50 906 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
4a71df50 907 card->dev->mtu = card->info.initial_mtu;
8403b13c 908 card->dev->netdev_ops = &qeth_l2_netdev_ops;
4a71df50
FB		 909 if (card->info.type != QETH_CARD_TYPE_OSN)
910 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
911 else
912 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
913 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
914 card->info.broadcast_capable = 1;
915 qeth_l2_request_initial_mac(card);
916 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
917 return register_netdev(card->dev);
918}
919
920static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
921{
922 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
923 int rc = 0;
924 enum qeth_card_states recover_flag;
925
926 BUG_ON(!card);
d11ba0c4
PT		 927 QETH_DBF_TEXT(SETUP, 2, "setonlin");
928 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50 929
4a71df50 930 recover_flag = card->state;
4a71df50
FB		 931 rc = qeth_core_hardsetup_card(card);
932 if (rc) {
d11ba0c4 933 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
aa909224 934 rc = -ENODEV;
4a71df50
FB		 935 goto out_remove;
936 }
937
aa909224
UB		 938 if (!card->dev && qeth_l2_setup_netdev(card)) {
939 rc = -ENODEV;
4a71df50 940 goto out_remove;
aa909224 941 }
4a71df50
FB		 942
943 if (card->info.type != QETH_CARD_TYPE_OSN)
944 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
945
946 card->state = CARD_STATE_HARDSETUP;
947 qeth_print_status_message(card);
948
949 /* softsetup */
d11ba0c4 950 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50
FB		 951
952 rc = qeth_send_startlan(card);
953 if (rc) {
d11ba0c4 954 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50 955 if (rc == 0xe080) {
74eacdb9
FB		 956 dev_warn(&card->gdev->dev,
957 "The LAN is offline\n");
4a71df50 958 card->lan_online = 0;
f2148565 959 return 0;
4a71df50 960 }
aa909224 961 rc = -ENODEV;
f2148565 962 goto out_remove;
4a71df50
FB		 963 } else
964 card->lan_online = 1;
965
966 if (card->info.type != QETH_CARD_TYPE_OSN) {
d64ecc22
EL		 967 /* configure isolation level */
968 qeth_set_access_ctrl_online(card);
4a71df50
FB		 969 qeth_l2_process_vlans(card, 0);
970 }
971
972 netif_tx_disable(card->dev);
973
974 rc = qeth_init_qdio_queues(card);
975 if (rc) {
d11ba0c4 976 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
aa909224 977 rc = -ENODEV;
4a71df50
FB		 978 goto out_remove;
979 }
980 card->state = CARD_STATE_SOFTSETUP;
981 netif_carrier_on(card->dev);
982
983 qeth_set_allowed_threads(card, 0xffffffff, 0);
984 if (recover_flag == CARD_STATE_RECOVER) {
985 if (recovery_mode &&
986 card->info.type != QETH_CARD_TYPE_OSN) {
987 qeth_l2_open(card->dev);
988 } else {
989 rtnl_lock();
990 dev_open(card->dev);
991 rtnl_unlock();
992 }
993 /* this also sets saved unicast addresses */
994 qeth_l2_set_multicast_list(card->dev);
995 }
996 /* let user_space know that device is online */
997 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
998 return 0;
aa909224 999
4a71df50
FB		 1000out_remove:
1001 card->use_hard_stop = 1;
1002 qeth_l2_stop_card(card, 0);
1003 ccw_device_set_offline(CARD_DDEV(card));
1004 ccw_device_set_offline(CARD_WDEV(card));
1005 ccw_device_set_offline(CARD_RDEV(card));
1006 if (recover_flag == CARD_STATE_RECOVER)
1007 card->state = CARD_STATE_RECOVER;
1008 else
1009 card->state = CARD_STATE_DOWN;
aa909224 1010 return rc;
4a71df50
FB		 1011}
1012
1013static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1014{
1015 return __qeth_l2_set_online(gdev, 0);
1016}
1017
1018static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1019 int recovery_mode)
1020{
1021 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1022 int rc = 0, rc2 = 0, rc3 = 0;
1023 enum qeth_card_states recover_flag;
1024
d11ba0c4
PT		 1025 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1026 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1027
1028 if (card->dev && netif_carrier_ok(card->dev))
1029 netif_carrier_off(card->dev);
1030 recover_flag = card->state;
0f5623c9 1031 qeth_l2_stop_card(card, recovery_mode);
4a71df50
FB		 1032 rc = ccw_device_set_offline(CARD_DDEV(card));
1033 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1034 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1035 if (!rc)
1036 rc = (rc2) ? rc2 : rc3;
1037 if (rc)
d11ba0c4 1038 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 1039 if (recover_flag == CARD_STATE_UP)
1040 card->state = CARD_STATE_RECOVER;
1041 /* let user_space know that device is offline */
1042 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1043 return 0;
1044}
1045
1046static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1047{
1048 return __qeth_l2_set_offline(cgdev, 0);
1049}
1050
1051static int qeth_l2_recover(void *ptr)
1052{
1053 struct qeth_card *card;
1054 int rc = 0;
1055
1056 card = (struct qeth_card *) ptr;
d11ba0c4
PT		 1057 QETH_DBF_TEXT(TRACE, 2, "recover1");
1058 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
4a71df50
FB		 1059 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1060 return 0;
d11ba0c4 1061 QETH_DBF_TEXT(TRACE, 2, "recover2");
74eacdb9
FB		 1062 dev_warn(&card->gdev->dev,
1063 "A recovery process has been started for the device\n");
4a71df50
FB		 1064 card->use_hard_stop = 1;
1065 __qeth_l2_set_offline(card->gdev, 1);
1066 rc = __qeth_l2_set_online(card->gdev, 1);
1067 /* don't run another scheduled recovery */
1068 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1069 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1070 if (!rc)
74eacdb9
FB		 1071 dev_info(&card->gdev->dev,
1072 "Device successfully recovered!\n");
28a7e4c9 1073 else {
869da90b
UB		 1074 rtnl_lock();
1075 dev_close(card->dev);
1076 rtnl_unlock();
74eacdb9
FB		 1077 dev_warn(&card->gdev->dev, "The qeth device driver "
1078 "failed to recover an error on the device\n");
28a7e4c9 1079 }
4a71df50
FB		 1080 return 0;
1081}
1082
1083static int __init qeth_l2_init(void)
1084{
74eacdb9 1085 pr_info("register layer 2 discipline\n");
4a71df50
FB		 1086 return 0;
1087}
1088
1089static void __exit qeth_l2_exit(void)
1090{
74eacdb9 1091 pr_info("unregister layer 2 discipline\n");
4a71df50
FB		 1092}
1093
1094static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1095{
1096 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1097 qeth_qdio_clear_card(card, 0);
1098 qeth_clear_qdio_buffers(card);
1099}
1100
bbcfcdc8
FB		 1101static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1102{
1103 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1104
1105 if (card->dev)
1106 netif_device_detach(card->dev);
1107 qeth_set_allowed_threads(card, 0, 1);
1108 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1109 if (gdev->state == CCWGROUP_OFFLINE)
1110 return 0;
1111 if (card->state == CARD_STATE_UP) {
1112 card->use_hard_stop = 1;
1113 __qeth_l2_set_offline(card->gdev, 1);
1114 } else
1115 __qeth_l2_set_offline(card->gdev, 0);
1116 return 0;
1117}
1118
1119static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1120{
1121 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1122 int rc = 0;
1123
1124 if (gdev->state == CCWGROUP_OFFLINE)
1125 goto out;
1126
1127 if (card->state == CARD_STATE_RECOVER) {
1128 rc = __qeth_l2_set_online(card->gdev, 1);
1129 if (rc) {
869da90b
UB		 1130 rtnl_lock();
1131 dev_close(card->dev);
1132 rtnl_unlock();
bbcfcdc8
FB		 1133 }
1134 } else
1135 rc = __qeth_l2_set_online(card->gdev, 0);
1136out:
1137 qeth_set_allowed_threads(card, 0xffffffff, 0);
1138 if (card->dev)
1139 netif_device_attach(card->dev);
1140 if (rc)
1141 dev_warn(&card->gdev->dev, "The qeth device driver "
1142 "failed to recover an error on the device\n");
1143 return rc;
1144}
1145
4a71df50
FB		 1146struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1147 .probe = qeth_l2_probe_device,
1148 .remove = qeth_l2_remove_device,
1149 .set_online = qeth_l2_set_online,
1150 .set_offline = qeth_l2_set_offline,
1151 .shutdown = qeth_l2_shutdown,
bbcfcdc8
FB		 1152 .freeze = qeth_l2_pm_suspend,
1153 .thaw = qeth_l2_pm_resume,
1154 .restore = qeth_l2_pm_resume,
4a71df50
FB		 1155};
1156EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1157
1158static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1159 struct qeth_cmd_buffer *iob)
1160{
1161 unsigned long flags;
1162 int rc = 0;
1163
d11ba0c4 1164 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
4a71df50
FB		 1165
1166 wait_event(card->wait_q,
1167 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1168 qeth_prepare_control_data(card, len, iob);
d11ba0c4 1169 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
4a71df50
FB		 1170 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1171 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1172 (addr_t) iob, 0, 0);
1173 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1174 if (rc) {
14cc21b6 1175 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
4a71df50 1176 "ccw_device_start rc = %i\n", rc);
d11ba0c4 1177 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
4a71df50
FB		 1178 qeth_release_buffer(iob->channel, iob);
1179 atomic_set(&card->write.irq_pending, 0);
1180 wake_up(&card->wait_q);
1181 }
1182 return rc;
1183}
1184
1185static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1186 struct qeth_cmd_buffer *iob, int data_len)
1187{
1188 u16 s1, s2;
1189
d11ba0c4 1190 QETH_DBF_TEXT(TRACE, 4, "osndipa");
4a71df50
FB		 1191
1192 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1193 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1194 s2 = (u16)data_len;
1195 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1196 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1197 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1198 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1199 return qeth_osn_send_control_data(card, s1, iob);
1200}
1201
1202int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1203{
1204 struct qeth_cmd_buffer *iob;
1205 struct qeth_card *card;
1206 int rc;
1207
d11ba0c4 1208 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
4a71df50
FB		 1209 if (!dev)
1210 return -ENODEV;
509e2562 1211 card = dev->ml_priv;
4a71df50
FB		 1212 if (!card)
1213 return -ENODEV;
1214 if ((card->state != CARD_STATE_UP) &&
1215 (card->state != CARD_STATE_SOFTSETUP))
1216 return -ENODEV;
1217 iob = qeth_wait_for_buffer(&card->write);
1218 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1219 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1220 return rc;
1221}
1222EXPORT_SYMBOL(qeth_osn_assist);
1223
1224int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1225 int (*assist_cb)(struct net_device *, void *),
1226 int (*data_cb)(struct sk_buff *))
1227{
1228 struct qeth_card *card;
1229
d11ba0c4 1230 QETH_DBF_TEXT(TRACE, 2, "osnreg");
4a71df50
FB		 1231 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1232 if (*dev == NULL)
1233 return -ENODEV;
509e2562 1234 card = (*dev)->ml_priv;
4a71df50
FB		 1235 if (!card)
1236 return -ENODEV;
1237 if ((assist_cb == NULL) || (data_cb == NULL))
1238 return -EINVAL;
1239 card->osn_info.assist_cb = assist_cb;
1240 card->osn_info.data_cb = data_cb;
1241 return 0;
1242}
1243EXPORT_SYMBOL(qeth_osn_register);
1244
1245void qeth_osn_deregister(struct net_device *dev)
1246{
1247 struct qeth_card *card;
1248
d11ba0c4 1249 QETH_DBF_TEXT(TRACE, 2, "osndereg");
4a71df50
FB		 1250 if (!dev)
1251 return;
509e2562 1252 card = dev->ml_priv;
4a71df50
FB		 1253 if (!card)
1254 return;
1255 card->osn_info.assist_cb = NULL;
1256 card->osn_info.data_cb = NULL;
1257 return;
1258}
1259EXPORT_SYMBOL(qeth_osn_deregister);
1260
1261module_init(qeth_l2_init);
1262module_exit(qeth_l2_exit);
1263MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1264MODULE_DESCRIPTION("qeth layer 2 discipline");
1265MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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