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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[mirror_ubuntu-artful-kernel.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;
7db2266a 611 struct dev_addr_list *dm;
ccffad25 612 struct netdev_hw_addr *ha;
4a71df50
FB		 613
614 if (card->info.type == QETH_CARD_TYPE_OSN)
615 return ;
616
d11ba0c4 617 QETH_DBF_TEXT(TRACE, 3, "setmulti");
8e98ac48
UB		 618 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
619 (card->state != CARD_STATE_UP))
620 return;
4a71df50
FB		 621 qeth_l2_del_all_mc(card);
622 spin_lock_bh(&card->mclock);
623 for (dm = dev->mc_list; dm; dm = dm->next)
7db2266a
FB		 624 qeth_l2_add_mc(card, dm->da_addr, 0);
625
32e7bfc4 626 netdev_for_each_uc_addr(ha, dev)
ccffad25 627 qeth_l2_add_mc(card, ha->addr, 1);
7db2266a 628
4a71df50
FB		 629 spin_unlock_bh(&card->mclock);
630 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
631 return;
632 qeth_setadp_promisc_mode(card);
633}
634
635static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
636{
637 int rc;
638 struct qeth_hdr *hdr = NULL;
639 int elements = 0;
509e2562 640 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 641 struct sk_buff *new_skb = skb;
642 int ipv = qeth_get_ip_version(skb);
ce73e10e 643 int cast_type = qeth_l2_get_cast_type(card, skb);
4a71df50
FB		 644 struct qeth_qdio_out_q *queue = card->qdio.out_qs
645 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
646 int tx_bytes = skb->len;
683d718a
FB		 647 int data_offset = -1;
648 int elements_needed = 0;
649 int hd_len = 0;
4a71df50 650
4a71df50
FB		 651 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
652 card->stats.tx_carrier_errors++;
653 goto tx_drop;
654 }
655
656 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
657 (skb->protocol == htons(ETH_P_IPV6)))
658 goto tx_drop;
659
660 if (card->options.performance_stats) {
661 card->perf_stats.outbound_cnt++;
662 card->perf_stats.outbound_start_time = qeth_get_micros();
663 }
664 netif_stop_queue(dev);
665
4a71df50
FB		 666 if (card->info.type == QETH_CARD_TYPE_OSN)
667 hdr = (struct qeth_hdr *)skb->data;
668 else {
64ef8957 669 if (card->info.type == QETH_CARD_TYPE_IQD) {
683d718a
FB		 670 new_skb = skb;
671 data_offset = ETH_HLEN;
672 hd_len = ETH_HLEN;
673 hdr = kmem_cache_alloc(qeth_core_header_cache,
674 GFP_ATOMIC);
675 if (!hdr)
676 goto tx_drop;
677 elements_needed++;
678 skb_reset_mac_header(new_skb);
679 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
680 hdr->hdr.l2.pkt_length = new_skb->len;
681 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
682 skb_mac_header(new_skb), ETH_HLEN);
683 } else {
684 /* create a clone with writeable headroom */
685 new_skb = skb_realloc_headroom(skb,
686 sizeof(struct qeth_hdr));
687 if (!new_skb)
688 goto tx_drop;
689 hdr = (struct qeth_hdr *)skb_push(new_skb,
f90b744e 690 sizeof(struct qeth_hdr));
683d718a
FB		 691 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
692 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
693 }
4a71df50
FB		 694 }
695
64ef8957 696 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
683d718a 697 elements_needed);
64ef8957
FB		 698 if (!elements) {
699 if (data_offset >= 0)
700 kmem_cache_free(qeth_core_header_cache, hdr);
701 goto tx_drop;
f61a0d05 702 }
4a71df50
FB		 703
704 if (card->info.type != QETH_CARD_TYPE_IQD)
705 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
64ef8957 706 elements);
4a71df50
FB		 707 else
708 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
64ef8957 709 elements, data_offset, hd_len);
4a71df50
FB		 710 if (!rc) {
711 card->stats.tx_packets++;
712 card->stats.tx_bytes += tx_bytes;
713 if (new_skb != skb)
714 dev_kfree_skb_any(skb);
ec634fe3 715 rc = NETDEV_TX_OK;
4a71df50 716 } else {
683d718a
FB		 717 if (data_offset >= 0)
718 kmem_cache_free(qeth_core_header_cache, hdr);
719
4a71df50
FB		 720 if (rc == -EBUSY) {
721 if (new_skb != skb)
722 dev_kfree_skb_any(new_skb);
723 return NETDEV_TX_BUSY;
724 } else
725 goto tx_drop;
726 }
727
728 netif_wake_queue(dev);
729 if (card->options.performance_stats)
730 card->perf_stats.outbound_time += qeth_get_micros() -
731 card->perf_stats.outbound_start_time;
732 return rc;
733
734tx_drop:
735 card->stats.tx_dropped++;
736 card->stats.tx_errors++;
737 if ((new_skb != skb) && new_skb)
738 dev_kfree_skb_any(new_skb);
739 dev_kfree_skb_any(skb);
d0ec0f54 740 netif_wake_queue(dev);
4a71df50
FB		 741 return NETDEV_TX_OK;
742}
743
744static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
779e6e1c 745 unsigned int qdio_err, unsigned int queue,
4a71df50
FB		 746 int first_element, int count, unsigned long card_ptr)
747{
748 struct net_device *net_dev;
749 struct qeth_card *card;
750 struct qeth_qdio_buffer *buffer;
751 int index;
752 int i;
753
4a71df50
FB		 754 card = (struct qeth_card *) card_ptr;
755 net_dev = card->dev;
756 if (card->options.performance_stats) {
757 card->perf_stats.inbound_cnt++;
758 card->perf_stats.inbound_start_time = qeth_get_micros();
759 }
779e6e1c
JG		 760 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
761 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
762 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
763 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
764 count);
765 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
766 qeth_schedule_recovery(card);
767 return;
4a71df50
FB		 768 }
769 for (i = first_element; i < (first_element + count); ++i) {
770 index = i % QDIO_MAX_BUFFERS_PER_Q;
771 buffer = &card->qdio.in_q->bufs[index];
779e6e1c 772 if (!(qdio_err &&
76b11f8e
UB		 773 qeth_check_qdio_errors(card, buffer->buffer, qdio_err,
774 "qinerr")))
4a71df50
FB		 775 qeth_l2_process_inbound_buffer(card, buffer, index);
776 /* clear buffer and give back to hardware */
777 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
778 qeth_queue_input_buffer(card, index);
779 }
780 if (card->options.performance_stats)
781 card->perf_stats.inbound_time += qeth_get_micros() -
782 card->perf_stats.inbound_start_time;
783}
784
785static int qeth_l2_open(struct net_device *dev)
786{
509e2562 787 struct qeth_card *card = dev->ml_priv;
4a71df50 788
d11ba0c4 789 QETH_DBF_TEXT(TRACE, 4, "qethopen");
4a71df50
FB		 790 if (card->state != CARD_STATE_SOFTSETUP)
791 return -ENODEV;
792
793 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
794 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
d11ba0c4 795 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
4a71df50
FB		 796 return -EPERM;
797 }
798 card->data.state = CH_STATE_UP;
799 card->state = CARD_STATE_UP;
4a71df50
FB		 800 netif_start_queue(dev);
801
802 if (!card->lan_online && netif_carrier_ok(dev))
803 netif_carrier_off(dev);
804 return 0;
805}
806
807
808static int qeth_l2_stop(struct net_device *dev)
809{
509e2562 810 struct qeth_card *card = dev->ml_priv;
4a71df50 811
d11ba0c4 812 QETH_DBF_TEXT(TRACE, 4, "qethstop");
4a71df50 813 netif_tx_disable(dev);
4a71df50
FB		 814 if (card->state == CARD_STATE_UP)
815 card->state = CARD_STATE_SOFTSETUP;
816 return 0;
817}
818
819static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
820{
821 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
822
823 INIT_LIST_HEAD(&card->vid_list);
824 INIT_LIST_HEAD(&card->mc_list);
825 card->options.layer2 = 1;
826 card->discipline.input_handler = (qdio_handler_t *)
827 qeth_l2_qdio_input_handler;
828 card->discipline.output_handler = (qdio_handler_t *)
829 qeth_qdio_output_handler;
830 card->discipline.recover = qeth_l2_recover;
831 return 0;
832}
833
834static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
835{
836 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
837
f2148565 838 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 839 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
840
841 if (cgdev->state == CCWGROUP_ONLINE) {
842 card->use_hard_stop = 1;
843 qeth_l2_set_offline(cgdev);
844 }
845
846 if (card->dev) {
847 unregister_netdev(card->dev);
848 card->dev = NULL;
849 }
850
851 qeth_l2_del_all_mc(card);
852 return;
853}
854
0fc0b732 855static const struct ethtool_ops qeth_l2_ethtool_ops = {
4a71df50 856 .get_link = ethtool_op_get_link,
4a71df50
FB		 857 .get_strings = qeth_core_get_strings,
858 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 859 .get_sset_count = qeth_core_get_sset_count,
4a71df50 860 .get_drvinfo = qeth_core_get_drvinfo,
3f9975aa 861 .get_settings = qeth_core_ethtool_get_settings,
4a71df50
FB		 862};
863
0fc0b732 864static const struct ethtool_ops qeth_l2_osn_ops = {
4a71df50
FB		 865 .get_strings = qeth_core_get_strings,
866 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 867 .get_sset_count = qeth_core_get_sset_count,
4a71df50
FB		 868 .get_drvinfo = qeth_core_get_drvinfo,
869};
870
3d58cefd 871static const struct net_device_ops qeth_l2_netdev_ops = {
8403b13c
FB		 872 .ndo_open = qeth_l2_open,
873 .ndo_stop = qeth_l2_stop,
874 .ndo_get_stats = qeth_get_stats,
875 .ndo_start_xmit = qeth_l2_hard_start_xmit,
876 .ndo_validate_addr = eth_validate_addr,
877 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
878 .ndo_do_ioctl = qeth_l2_do_ioctl,
879 .ndo_set_mac_address = qeth_l2_set_mac_address,
880 .ndo_change_mtu = qeth_change_mtu,
881 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
882 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
883 .ndo_tx_timeout = qeth_tx_timeout,
884};
885
4a71df50
FB		 886static int qeth_l2_setup_netdev(struct qeth_card *card)
887{
888 switch (card->info.type) {
889 case QETH_CARD_TYPE_OSAE:
890 card->dev = alloc_etherdev(0);
891 break;
892 case QETH_CARD_TYPE_IQD:
893 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
894 break;
895 case QETH_CARD_TYPE_OSN:
896 card->dev = alloc_netdev(0, "osn%d", ether_setup);
897 card->dev->flags |= IFF_NOARP;
898 break;
899 default:
900 card->dev = alloc_etherdev(0);
901 }
902
903 if (!card->dev)
904 return -ENODEV;
905
509e2562 906 card->dev->ml_priv = card;
4a71df50 907 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
4a71df50 908 card->dev->mtu = card->info.initial_mtu;
8403b13c 909 card->dev->netdev_ops = &qeth_l2_netdev_ops;
4a71df50
FB		 910 if (card->info.type != QETH_CARD_TYPE_OSN)
911 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
912 else
913 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
914 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
915 card->info.broadcast_capable = 1;
916 qeth_l2_request_initial_mac(card);
917 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
918 return register_netdev(card->dev);
919}
920
921static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
922{
923 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
924 int rc = 0;
925 enum qeth_card_states recover_flag;
926
927 BUG_ON(!card);
d11ba0c4
PT		 928 QETH_DBF_TEXT(SETUP, 2, "setonlin");
929 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50 930
4a71df50 931 recover_flag = card->state;
4a71df50
FB		 932 rc = qeth_core_hardsetup_card(card);
933 if (rc) {
d11ba0c4 934 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
aa909224 935 rc = -ENODEV;
4a71df50
FB		 936 goto out_remove;
937 }
938
aa909224
UB		 939 if (!card->dev && qeth_l2_setup_netdev(card)) {
940 rc = -ENODEV;
4a71df50 941 goto out_remove;
aa909224 942 }
4a71df50
FB		 943
944 if (card->info.type != QETH_CARD_TYPE_OSN)
945 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
946
947 card->state = CARD_STATE_HARDSETUP;
948 qeth_print_status_message(card);
949
950 /* softsetup */
d11ba0c4 951 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50
FB		 952
953 rc = qeth_send_startlan(card);
954 if (rc) {
d11ba0c4 955 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50 956 if (rc == 0xe080) {
74eacdb9
FB		 957 dev_warn(&card->gdev->dev,
958 "The LAN is offline\n");
4a71df50 959 card->lan_online = 0;
f2148565 960 return 0;
4a71df50 961 }
aa909224 962 rc = -ENODEV;
f2148565 963 goto out_remove;
4a71df50
FB		 964 } else
965 card->lan_online = 1;
966
967 if (card->info.type != QETH_CARD_TYPE_OSN) {
d64ecc22
EL		 968 /* configure isolation level */
969 qeth_set_access_ctrl_online(card);
4a71df50
FB		 970 qeth_l2_process_vlans(card, 0);
971 }
972
973 netif_tx_disable(card->dev);
974
975 rc = qeth_init_qdio_queues(card);
976 if (rc) {
d11ba0c4 977 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
aa909224 978 rc = -ENODEV;
4a71df50
FB		 979 goto out_remove;
980 }
981 card->state = CARD_STATE_SOFTSETUP;
982 netif_carrier_on(card->dev);
983
984 qeth_set_allowed_threads(card, 0xffffffff, 0);
985 if (recover_flag == CARD_STATE_RECOVER) {
986 if (recovery_mode &&
987 card->info.type != QETH_CARD_TYPE_OSN) {
988 qeth_l2_open(card->dev);
989 } else {
990 rtnl_lock();
991 dev_open(card->dev);
992 rtnl_unlock();
993 }
994 /* this also sets saved unicast addresses */
995 qeth_l2_set_multicast_list(card->dev);
996 }
997 /* let user_space know that device is online */
998 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
999 return 0;
aa909224 1000
4a71df50
FB		 1001out_remove:
1002 card->use_hard_stop = 1;
1003 qeth_l2_stop_card(card, 0);
1004 ccw_device_set_offline(CARD_DDEV(card));
1005 ccw_device_set_offline(CARD_WDEV(card));
1006 ccw_device_set_offline(CARD_RDEV(card));
1007 if (recover_flag == CARD_STATE_RECOVER)
1008 card->state = CARD_STATE_RECOVER;
1009 else
1010 card->state = CARD_STATE_DOWN;
aa909224 1011 return rc;
4a71df50
FB		 1012}
1013
1014static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1015{
1016 return __qeth_l2_set_online(gdev, 0);
1017}
1018
1019static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1020 int recovery_mode)
1021{
1022 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1023 int rc = 0, rc2 = 0, rc3 = 0;
1024 enum qeth_card_states recover_flag;
1025
d11ba0c4
PT		 1026 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1027 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1028
1029 if (card->dev && netif_carrier_ok(card->dev))
1030 netif_carrier_off(card->dev);
1031 recover_flag = card->state;
0f5623c9 1032 qeth_l2_stop_card(card, recovery_mode);
4a71df50
FB		 1033 rc = ccw_device_set_offline(CARD_DDEV(card));
1034 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1035 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1036 if (!rc)
1037 rc = (rc2) ? rc2 : rc3;
1038 if (rc)
d11ba0c4 1039 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 1040 if (recover_flag == CARD_STATE_UP)
1041 card->state = CARD_STATE_RECOVER;
1042 /* let user_space know that device is offline */
1043 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1044 return 0;
1045}
1046
1047static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1048{
1049 return __qeth_l2_set_offline(cgdev, 0);
1050}
1051
1052static int qeth_l2_recover(void *ptr)
1053{
1054 struct qeth_card *card;
1055 int rc = 0;
1056
1057 card = (struct qeth_card *) ptr;
d11ba0c4
PT		 1058 QETH_DBF_TEXT(TRACE, 2, "recover1");
1059 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
4a71df50
FB		 1060 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1061 return 0;
d11ba0c4 1062 QETH_DBF_TEXT(TRACE, 2, "recover2");
74eacdb9
FB		 1063 dev_warn(&card->gdev->dev,
1064 "A recovery process has been started for the device\n");
4a71df50
FB		 1065 card->use_hard_stop = 1;
1066 __qeth_l2_set_offline(card->gdev, 1);
1067 rc = __qeth_l2_set_online(card->gdev, 1);
1068 /* don't run another scheduled recovery */
1069 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1070 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1071 if (!rc)
74eacdb9
FB		 1072 dev_info(&card->gdev->dev,
1073 "Device successfully recovered!\n");
28a7e4c9 1074 else {
869da90b
UB		 1075 rtnl_lock();
1076 dev_close(card->dev);
1077 rtnl_unlock();
74eacdb9
FB		 1078 dev_warn(&card->gdev->dev, "The qeth device driver "
1079 "failed to recover an error on the device\n");
28a7e4c9 1080 }
4a71df50
FB		 1081 return 0;
1082}
1083
1084static int __init qeth_l2_init(void)
1085{
74eacdb9 1086 pr_info("register layer 2 discipline\n");
4a71df50
FB		 1087 return 0;
1088}
1089
1090static void __exit qeth_l2_exit(void)
1091{
74eacdb9 1092 pr_info("unregister layer 2 discipline\n");
4a71df50
FB		 1093}
1094
1095static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1096{
1097 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1098 qeth_qdio_clear_card(card, 0);
1099 qeth_clear_qdio_buffers(card);
1100}
1101
bbcfcdc8
FB		 1102static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1103{
1104 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1105
1106 if (card->dev)
1107 netif_device_detach(card->dev);
1108 qeth_set_allowed_threads(card, 0, 1);
1109 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1110 if (gdev->state == CCWGROUP_OFFLINE)
1111 return 0;
1112 if (card->state == CARD_STATE_UP) {
1113 card->use_hard_stop = 1;
1114 __qeth_l2_set_offline(card->gdev, 1);
1115 } else
1116 __qeth_l2_set_offline(card->gdev, 0);
1117 return 0;
1118}
1119
1120static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1121{
1122 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1123 int rc = 0;
1124
1125 if (gdev->state == CCWGROUP_OFFLINE)
1126 goto out;
1127
1128 if (card->state == CARD_STATE_RECOVER) {
1129 rc = __qeth_l2_set_online(card->gdev, 1);
1130 if (rc) {
869da90b
UB		 1131 rtnl_lock();
1132 dev_close(card->dev);
1133 rtnl_unlock();
bbcfcdc8
FB		 1134 }
1135 } else
1136 rc = __qeth_l2_set_online(card->gdev, 0);
1137out:
1138 qeth_set_allowed_threads(card, 0xffffffff, 0);
1139 if (card->dev)
1140 netif_device_attach(card->dev);
1141 if (rc)
1142 dev_warn(&card->gdev->dev, "The qeth device driver "
1143 "failed to recover an error on the device\n");
1144 return rc;
1145}
1146
4a71df50
FB		 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,
bbcfcdc8
FB		 1153 .freeze = qeth_l2_pm_suspend,
1154 .thaw = qeth_l2_pm_resume,
1155 .restore = qeth_l2_pm_resume,
4a71df50
FB		 1156};
1157EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1158
1159static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1160 struct qeth_cmd_buffer *iob)
1161{
1162 unsigned long flags;
1163 int rc = 0;
1164
d11ba0c4 1165 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
4a71df50
FB		 1166
1167 wait_event(card->wait_q,
1168 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1169 qeth_prepare_control_data(card, len, iob);
d11ba0c4 1170 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
4a71df50
FB		 1171 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1172 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1173 (addr_t) iob, 0, 0);
1174 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1175 if (rc) {
14cc21b6 1176 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
4a71df50 1177 "ccw_device_start rc = %i\n", rc);
d11ba0c4 1178 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
4a71df50
FB		 1179 qeth_release_buffer(iob->channel, iob);
1180 atomic_set(&card->write.irq_pending, 0);
1181 wake_up(&card->wait_q);
1182 }
1183 return rc;
1184}
1185
1186static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1187 struct qeth_cmd_buffer *iob, int data_len)
1188{
1189 u16 s1, s2;
1190
d11ba0c4 1191 QETH_DBF_TEXT(TRACE, 4, "osndipa");
4a71df50
FB		 1192
1193 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1194 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1195 s2 = (u16)data_len;
1196 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1197 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1198 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1199 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1200 return qeth_osn_send_control_data(card, s1, iob);
1201}
1202
1203int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1204{
1205 struct qeth_cmd_buffer *iob;
1206 struct qeth_card *card;
1207 int rc;
1208
d11ba0c4 1209 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
4a71df50
FB		 1210 if (!dev)
1211 return -ENODEV;
509e2562 1212 card = dev->ml_priv;
4a71df50
FB		 1213 if (!card)
1214 return -ENODEV;
1215 if ((card->state != CARD_STATE_UP) &&
1216 (card->state != CARD_STATE_SOFTSETUP))
1217 return -ENODEV;
1218 iob = qeth_wait_for_buffer(&card->write);
1219 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1220 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1221 return rc;
1222}
1223EXPORT_SYMBOL(qeth_osn_assist);
1224
1225int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1226 int (*assist_cb)(struct net_device *, void *),
1227 int (*data_cb)(struct sk_buff *))
1228{
1229 struct qeth_card *card;
1230
d11ba0c4 1231 QETH_DBF_TEXT(TRACE, 2, "osnreg");
4a71df50
FB		 1232 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1233 if (*dev == NULL)
1234 return -ENODEV;
509e2562 1235 card = (*dev)->ml_priv;
4a71df50
FB		 1236 if (!card)
1237 return -ENODEV;
1238 if ((assist_cb == NULL) || (data_cb == NULL))
1239 return -EINVAL;
1240 card->osn_info.assist_cb = assist_cb;
1241 card->osn_info.data_cb = data_cb;
1242 return 0;
1243}
1244EXPORT_SYMBOL(qeth_osn_register);
1245
1246void qeth_osn_deregister(struct net_device *dev)
1247{
1248 struct qeth_card *card;
1249
d11ba0c4 1250 QETH_DBF_TEXT(TRACE, 2, "osndereg");
4a71df50
FB		 1251 if (!dev)
1252 return;
509e2562 1253 card = dev->ml_priv;
4a71df50
FB		 1254 if (!card)
1255 return;
1256 card->osn_info.assist_cb = NULL;
1257 card->osn_info.data_cb = NULL;
1258 return;
1259}
1260EXPORT_SYMBOL(qeth_osn_deregister);
1261
1262module_init(qeth_l2_init);
1263module_exit(qeth_l2_exit);
1264MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1265MODULE_DESCRIPTION("qeth layer 2 discipline");
1266MODULE_LICENSE("GPL");
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