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s390: Use eth_random_addr
[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;
c3ab96f3
FB		 78 case SIOC_QETH_QUERY_OAT:
79 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
80 break;
4a71df50
FB		 81 default:
82 rc = -EOPNOTSUPP;
83 }
84 if (rc)
847a50fd 85 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
4a71df50
FB		 86 return rc;
87}
88
89static int qeth_l2_verify_dev(struct net_device *dev)
90{
91 struct qeth_card *card;
92 unsigned long flags;
93 int rc = 0;
94
95 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
96 list_for_each_entry(card, &qeth_core_card_list.list, list) {
97 if (card->dev == dev) {
98 rc = QETH_REAL_CARD;
99 break;
100 }
101 }
102 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
103
104 return rc;
105}
106
107static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
108{
109 struct qeth_card *card;
110 struct net_device *ndev;
f06f6f32 111 __u16 temp_dev_no;
4a71df50 112 unsigned long flags;
f06f6f32 113 struct ccw_dev_id read_devid;
4a71df50
FB		 114
115 ndev = NULL;
116 memcpy(&temp_dev_no, read_dev_no, 2);
117 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
118 list_for_each_entry(card, &qeth_core_card_list.list, list) {
f06f6f32
CH		 119 ccw_device_get_id(CARD_RDEV(card), &read_devid);
120 if (read_devid.devno == temp_dev_no) {
4a71df50
FB		 121 ndev = card->dev;
122 break;
123 }
124 }
125 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
126 return ndev;
127}
128
129static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
130 struct qeth_reply *reply,
131 unsigned long data)
132{
133 struct qeth_ipa_cmd *cmd;
134 __u8 *mac;
135
847a50fd 136 QETH_CARD_TEXT(card, 2, "L2Sgmacb");
4a71df50
FB		 137 cmd = (struct qeth_ipa_cmd *) data;
138 mac = &cmd->data.setdelmac.mac[0];
139 /* MAC already registered, needed in couple/uncouple case */
0666eb06 140 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
7c510e4b
JB		 141 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
142 mac, QETH_CARD_IFNAME(card));
4a71df50
FB		 143 cmd->hdr.return_code = 0;
144 }
145 if (cmd->hdr.return_code)
7c510e4b
JB		 146 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
147 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
4a71df50
FB		 148 return 0;
149}
150
151static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
152{
847a50fd 153 QETH_CARD_TEXT(card, 2, "L2Sgmac");
4a71df50
FB		 154 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
155 qeth_l2_send_setgroupmac_cb);
156}
157
158static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
159 struct qeth_reply *reply,
160 unsigned long data)
161{
162 struct qeth_ipa_cmd *cmd;
163 __u8 *mac;
164
847a50fd 165 QETH_CARD_TEXT(card, 2, "L2Dgmacb");
4a71df50
FB		 166 cmd = (struct qeth_ipa_cmd *) data;
167 mac = &cmd->data.setdelmac.mac[0];
168 if (cmd->hdr.return_code)
7c510e4b
JB		 169 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
170 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
4a71df50
FB		 171 return 0;
172}
173
174static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
175{
847a50fd 176 QETH_CARD_TEXT(card, 2, "L2Dgmac");
4a71df50
FB		 177 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
178 qeth_l2_send_delgroupmac_cb);
179}
180
7db2266a 181static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
4a71df50
FB		 182{
183 struct qeth_mc_mac *mc;
7db2266a 184 int rc;
4a71df50
FB		 185
186 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
187
14cc21b6 188 if (!mc)
4a71df50 189 return;
4a71df50
FB		 190
191 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
192 mc->mc_addrlen = OSA_ADDR_LEN;
7db2266a
FB		 193 mc->is_vmac = vmac;
194
195 if (vmac) {
196 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
197 NULL);
198 } else {
199 rc = qeth_l2_send_setgroupmac(card, mac);
200 }
4a71df50 201
7db2266a 202 if (!rc)
4a71df50
FB		 203 list_add_tail(&mc->list, &card->mc_list);
204 else
205 kfree(mc);
206}
207
70919e23 208static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
4a71df50
FB		 209{
210 struct qeth_mc_mac *mc, *tmp;
211
212 spin_lock_bh(&card->mclock);
213 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
70919e23
UB		 214 if (del) {
215 if (mc->is_vmac)
216 qeth_l2_send_setdelmac(card, mc->mc_addr,
7db2266a 217 IPA_CMD_DELVMAC, NULL);
70919e23
UB		 218 else
219 qeth_l2_send_delgroupmac(card, mc->mc_addr);
220 }
4a71df50
FB		 221 list_del(&mc->list);
222 kfree(mc);
223 }
224 spin_unlock_bh(&card->mclock);
225}
226
ce73e10e
KDW		 227static inline int qeth_l2_get_cast_type(struct qeth_card *card,
228 struct sk_buff *skb)
4a71df50 229{
ce73e10e
KDW		 230 if (card->info.type == QETH_CARD_TYPE_OSN)
231 return RTN_UNSPEC;
232 if (is_broadcast_ether_addr(skb->data))
233 return RTN_BROADCAST;
234 if (is_multicast_ether_addr(skb->data))
235 return RTN_MULTICAST;
236 return RTN_UNSPEC;
4a71df50
FB		 237}
238
239static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
240 struct sk_buff *skb, int ipv, int cast_type)
241{
683d718a 242 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
4a71df50
FB		 243
244 memset(hdr, 0, sizeof(struct qeth_hdr));
245 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
246
247 /* set byte byte 3 to casting flags */
248 if (cast_type == RTN_MULTICAST)
249 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
250 else if (cast_type == RTN_BROADCAST)
251 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
252 else
ce73e10e 253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
4a71df50
FB		 254
255 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
256 /* VSWITCH relies on the VLAN
257 * information to be present in
258 * the QDIO header */
259 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
260 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
261 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
262 }
263}
264
265static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
266 struct qeth_reply *reply, unsigned long data)
267{
268 struct qeth_ipa_cmd *cmd;
269
847a50fd 270 QETH_CARD_TEXT(card, 2, "L2sdvcb");
4a71df50
FB		 271 cmd = (struct qeth_ipa_cmd *) data;
272 if (cmd->hdr.return_code) {
14cc21b6 273 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
4a71df50
FB		 274 "Continuing\n", cmd->data.setdelvlan.vlan_id,
275 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
847a50fd
CO		 276 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
277 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 278 }
279 return 0;
280}
281
282static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
283 enum qeth_ipa_cmds ipacmd)
284{
285 struct qeth_ipa_cmd *cmd;
286 struct qeth_cmd_buffer *iob;
287
847a50fd 288 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
4a71df50
FB		 289 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
290 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
291 cmd->data.setdelvlan.vlan_id = i;
292 return qeth_send_ipa_cmd(card, iob,
293 qeth_l2_send_setdelvlan_cb, NULL);
294}
295
70919e23 296static void qeth_l2_process_vlans(struct qeth_card *card)
4a71df50
FB		 297{
298 struct qeth_vlan_vid *id;
847a50fd 299 QETH_CARD_TEXT(card, 3, "L2prcvln");
4a71df50
FB		 300 spin_lock_bh(&card->vlanlock);
301 list_for_each_entry(id, &card->vid_list, list) {
70919e23 302 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
4a71df50
FB		 303 }
304 spin_unlock_bh(&card->vlanlock);
305}
306
8e586137 307static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
4a71df50 308{
509e2562 309 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 310 struct qeth_vlan_vid *id;
311
847a50fd 312 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
10651db7 313 if (!vid)
8e586137 314 return 0;
5113fec0 315 if (card->info.type == QETH_CARD_TYPE_OSM) {
847a50fd 316 QETH_CARD_TEXT(card, 3, "aidOSM");
8e586137 317 return 0;
5113fec0 318 }
8e98ac48 319 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 320 QETH_CARD_TEXT(card, 3, "aidREC");
8e586137 321 return 0;
8e98ac48 322 }
4a71df50
FB		 323 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
324 if (id) {
325 id->vid = vid;
326 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
327 spin_lock_bh(&card->vlanlock);
328 list_add_tail(&id->list, &card->vid_list);
329 spin_unlock_bh(&card->vlanlock);
8e586137
JP		 330 } else {
331 return -ENOMEM;
4a71df50 332 }
8e586137 333 return 0;
4a71df50
FB		 334}
335
8e586137 336static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
4a71df50
FB		 337{
338 struct qeth_vlan_vid *id, *tmpid = NULL;
509e2562 339 struct qeth_card *card = dev->ml_priv;
4a71df50 340
847a50fd 341 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
5113fec0 342 if (card->info.type == QETH_CARD_TYPE_OSM) {
847a50fd 343 QETH_CARD_TEXT(card, 3, "kidOSM");
8e586137 344 return 0;
5113fec0 345 }
8e98ac48 346 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 347 QETH_CARD_TEXT(card, 3, "kidREC");
8e586137 348 return 0;
8e98ac48 349 }
4a71df50
FB		 350 spin_lock_bh(&card->vlanlock);
351 list_for_each_entry(id, &card->vid_list, list) {
352 if (id->vid == vid) {
353 list_del(&id->list);
354 tmpid = id;
355 break;
356 }
357 }
358 spin_unlock_bh(&card->vlanlock);
359 if (tmpid) {
360 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
361 kfree(tmpid);
362 }
363 qeth_l2_set_multicast_list(card->dev);
8e586137 364 return 0;
4a71df50
FB		 365}
366
367static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
368{
369 int rc = 0;
370
d11ba0c4
PT		 371 QETH_DBF_TEXT(SETUP , 2, "stopcard");
372 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 373
374 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 375 if (card->read.state == CH_STATE_UP &&
376 card->write.state == CH_STATE_UP &&
377 (card->state == CARD_STATE_UP)) {
378 if (recovery_mode &&
379 card->info.type != QETH_CARD_TYPE_OSN) {
380 qeth_l2_stop(card->dev);
381 } else {
382 rtnl_lock();
383 dev_close(card->dev);
384 rtnl_unlock();
385 }
70919e23 386 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
4a71df50
FB		 387 card->state = CARD_STATE_SOFTSETUP;
388 }
389 if (card->state == CARD_STATE_SOFTSETUP) {
70919e23 390 qeth_l2_del_all_mc(card, 0);
4a71df50
FB		 391 qeth_clear_ipacmd_list(card);
392 card->state = CARD_STATE_HARDSETUP;
393 }
394 if (card->state == CARD_STATE_HARDSETUP) {
395 qeth_qdio_clear_card(card, 0);
396 qeth_clear_qdio_buffers(card);
397 qeth_clear_working_pool_list(card);
398 card->state = CARD_STATE_DOWN;
399 }
400 if (card->state == CARD_STATE_DOWN) {
401 qeth_clear_cmd_buffers(&card->read);
402 qeth_clear_cmd_buffers(&card->write);
403 }
4a71df50
FB		 404 return rc;
405}
406
a1c3ed4c
FB		 407static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
408 int budget, int *done)
4a71df50 409{
a1c3ed4c 410 int work_done = 0;
4a71df50
FB		 411 struct sk_buff *skb;
412 struct qeth_hdr *hdr;
4a71df50
FB		 413 unsigned int len;
414
a1c3ed4c
FB		 415 *done = 0;
416 BUG_ON(!budget);
417 while (budget) {
418 skb = qeth_core_get_next_skb(card,
b3332930 419 &card->qdio.in_q->bufs[card->rx.b_index],
a1c3ed4c
FB		 420 &card->rx.b_element, &card->rx.e_offset, &hdr);
421 if (!skb) {
422 *done = 1;
423 break;
4a71df50 424 }
a1c3ed4c 425 skb->dev = card->dev;
4a71df50
FB		 426 switch (hdr->hdr.l2.id) {
427 case QETH_HEADER_TYPE_LAYER2:
428 skb->pkt_type = PACKET_HOST;
429 skb->protocol = eth_type_trans(skb, skb->dev);
c5e631a8 430 skb->ip_summed = CHECKSUM_NONE;
12883725
UB		 431 if (skb->protocol == htons(ETH_P_802_2))
432 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
4a71df50 433 len = skb->len;
a1c3ed4c 434 netif_receive_skb(skb);
4a71df50
FB		 435 break;
436 case QETH_HEADER_TYPE_OSN:
2d488c2f
UB		 437 if (card->info.type == QETH_CARD_TYPE_OSN) {
438 skb_push(skb, sizeof(struct qeth_hdr));
439 skb_copy_to_linear_data(skb, hdr,
4a71df50 440 sizeof(struct qeth_hdr));
2d488c2f
UB		 441 len = skb->len;
442 card->osn_info.data_cb(skb);
443 break;
444 }
445 /* else unknown */
4a71df50
FB		 446 default:
447 dev_kfree_skb_any(skb);
847a50fd 448 QETH_CARD_TEXT(card, 3, "inbunkno");
d11ba0c4 449 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 450 continue;
451 }
a1c3ed4c
FB		 452 work_done++;
453 budget--;
4a71df50
FB		 454 card->stats.rx_packets++;
455 card->stats.rx_bytes += len;
456 }
a1c3ed4c
FB		 457 return work_done;
458}
459
460static int qeth_l2_poll(struct napi_struct *napi, int budget)
461{
462 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
463 int work_done = 0;
464 struct qeth_qdio_buffer *buffer;
465 int done;
466 int new_budget = budget;
467
468 if (card->options.performance_stats) {
469 card->perf_stats.inbound_cnt++;
470 card->perf_stats.inbound_start_time = qeth_get_micros();
471 }
472
473 while (1) {
474 if (!card->rx.b_count) {
475 card->rx.qdio_err = 0;
476 card->rx.b_count = qdio_get_next_buffers(
477 card->data.ccwdev, 0, &card->rx.b_index,
478 &card->rx.qdio_err);
479 if (card->rx.b_count <= 0) {
480 card->rx.b_count = 0;
481 break;
482 }
483 card->rx.b_element =
484 &card->qdio.in_q->bufs[card->rx.b_index]
485 .buffer->element[0];
486 card->rx.e_offset = 0;
487 }
488
489 while (card->rx.b_count) {
490 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
491 if (!(card->rx.qdio_err &&
492 qeth_check_qdio_errors(card, buffer->buffer,
493 card->rx.qdio_err, "qinerr")))
494 work_done += qeth_l2_process_inbound_buffer(
495 card, new_budget, &done);
496 else
497 done = 1;
498
499 if (done) {
500 if (card->options.performance_stats)
501 card->perf_stats.bufs_rec++;
502 qeth_put_buffer_pool_entry(card,
503 buffer->pool_entry);
504 qeth_queue_input_buffer(card, card->rx.b_index);
505 card->rx.b_count--;
506 if (card->rx.b_count) {
507 card->rx.b_index =
508 (card->rx.b_index + 1) %
509 QDIO_MAX_BUFFERS_PER_Q;
510 card->rx.b_element =
511 &card->qdio.in_q
512 ->bufs[card->rx.b_index]
513 .buffer->element[0];
514 card->rx.e_offset = 0;
515 }
516 }
517
518 if (work_done >= budget)
519 goto out;
520 else
521 new_budget = budget - work_done;
522 }
523 }
524
525 napi_complete(napi);
526 if (qdio_start_irq(card->data.ccwdev, 0))
527 napi_schedule(&card->napi);
528out:
529 if (card->options.performance_stats)
530 card->perf_stats.inbound_time += qeth_get_micros() -
531 card->perf_stats.inbound_start_time;
532 return work_done;
4a71df50
FB		 533}
534
535static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
536 enum qeth_ipa_cmds ipacmd,
537 int (*reply_cb) (struct qeth_card *,
538 struct qeth_reply*,
539 unsigned long))
540{
541 struct qeth_ipa_cmd *cmd;
542 struct qeth_cmd_buffer *iob;
543
847a50fd 544 QETH_CARD_TEXT(card, 2, "L2sdmac");
4a71df50
FB		 545 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
546 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
547 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
548 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
549 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
550}
551
552static int qeth_l2_send_setmac_cb(struct qeth_card *card,
553 struct qeth_reply *reply,
554 unsigned long data)
555{
556 struct qeth_ipa_cmd *cmd;
557
847a50fd 558 QETH_CARD_TEXT(card, 2, "L2Smaccb");
4a71df50
FB		 559 cmd = (struct qeth_ipa_cmd *) data;
560 if (cmd->hdr.return_code) {
847a50fd 561 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
4a71df50 562 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
0666eb06
UB		 563 switch (cmd->hdr.return_code) {
564 case IPA_RC_L2_DUP_MAC:
565 case IPA_RC_L2_DUP_LAYER3_MAC:
566 dev_warn(&card->gdev->dev,
d998ab0b 567 "MAC address %pM already exists\n",
221c17fe 568 cmd->data.setdelmac.mac);
0666eb06
UB		 569 break;
570 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
571 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
572 dev_warn(&card->gdev->dev,
d998ab0b 573 "MAC address %pM is not authorized\n",
221c17fe 574 cmd->data.setdelmac.mac);
0666eb06
UB		 575 break;
576 default:
577 break;
578 }
4a71df50
FB		 579 } else {
580 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
581 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
582 OSA_ADDR_LEN);
74eacdb9 583 dev_info(&card->gdev->dev,
d998ab0b
HS		 584 "MAC address %pM successfully registered on device %s\n",
585 card->dev->dev_addr, card->dev->name);
4a71df50
FB		 586 }
587 return 0;
588}
589
590static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
591{
847a50fd 592 QETH_CARD_TEXT(card, 2, "L2Setmac");
4a71df50
FB		 593 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
594 qeth_l2_send_setmac_cb);
595}
596
597static int qeth_l2_send_delmac_cb(struct qeth_card *card,
598 struct qeth_reply *reply,
599 unsigned long data)
600{
601 struct qeth_ipa_cmd *cmd;
602
847a50fd 603 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
4a71df50
FB		 604 cmd = (struct qeth_ipa_cmd *) data;
605 if (cmd->hdr.return_code) {
847a50fd 606 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 607 return 0;
608 }
609 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
610
611 return 0;
612}
613
614static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
615{
847a50fd 616 QETH_CARD_TEXT(card, 2, "L2Delmac");
4a71df50
FB		 617 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
618 return 0;
619 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
620 qeth_l2_send_delmac_cb);
621}
622
623static int qeth_l2_request_initial_mac(struct qeth_card *card)
624{
625 int rc = 0;
626 char vendor_pre[] = {0x02, 0x00, 0x00};
627
d11ba0c4
PT		 628 QETH_DBF_TEXT(SETUP, 2, "doL2init");
629 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
4a71df50
FB		 630
631 rc = qeth_query_setadapterparms(card);
632 if (rc) {
14cc21b6
FB		 633 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
634 "device %s: x%x\n", CARD_BUS_ID(card), rc);
4a71df50
FB		 635 }
636
5113fec0
UB		 637 if (card->info.type == QETH_CARD_TYPE_IQD ||
638 card->info.type == QETH_CARD_TYPE_OSM ||
639 card->info.type == QETH_CARD_TYPE_OSX ||
640 card->info.guestlan) {
4a71df50
FB		 641 rc = qeth_setadpparms_change_macaddr(card);
642 if (rc) {
14cc21b6
FB		 643 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
644 "device %s: x%x\n", CARD_BUS_ID(card), rc);
d11ba0c4 645 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 646 return rc;
647 }
d11ba0c4 648 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
4a71df50 649 } else {
1833611d 650 eth_random_addr(card->dev->dev_addr);
4a71df50
FB		 651 memcpy(card->dev->dev_addr, vendor_pre, 3);
652 }
653 return 0;
654}
655
656static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
657{
658 struct sockaddr *addr = p;
509e2562 659 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 660 int rc = 0;
661
847a50fd 662 QETH_CARD_TEXT(card, 3, "setmac");
4a71df50
FB		 663
664 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
847a50fd 665 QETH_CARD_TEXT(card, 3, "setmcINV");
4a71df50
FB		 666 return -EOPNOTSUPP;
667 }
668
5113fec0
UB		 669 if (card->info.type == QETH_CARD_TYPE_OSN ||
670 card->info.type == QETH_CARD_TYPE_OSM ||
671 card->info.type == QETH_CARD_TYPE_OSX) {
847a50fd 672 QETH_CARD_TEXT(card, 3, "setmcTYP");
4a71df50
FB		 673 return -EOPNOTSUPP;
674 }
847a50fd 675 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
8e98ac48 676 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 677 QETH_CARD_TEXT(card, 3, "setmcREC");
8e98ac48
UB		 678 return -ERESTARTSYS;
679 }
4a71df50
FB		 680 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
681 if (!rc)
682 rc = qeth_l2_send_setmac(card, addr->sa_data);
e0a8114c 683 return rc ? -EINVAL : 0;
4a71df50
FB		 684}
685
686static void qeth_l2_set_multicast_list(struct net_device *dev)
687{
509e2562 688 struct qeth_card *card = dev->ml_priv;
ccffad25 689 struct netdev_hw_addr *ha;
4a71df50
FB		 690
691 if (card->info.type == QETH_CARD_TYPE_OSN)
692 return ;
693
847a50fd 694 QETH_CARD_TEXT(card, 3, "setmulti");
8e98ac48
UB		 695 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
696 (card->state != CARD_STATE_UP))
697 return;
70919e23 698 qeth_l2_del_all_mc(card, 1);
4a71df50 699 spin_lock_bh(&card->mclock);
22bedad3
JP		 700 netdev_for_each_mc_addr(ha, dev)
701 qeth_l2_add_mc(card, ha->addr, 0);
7db2266a 702
32e7bfc4 703 netdev_for_each_uc_addr(ha, dev)
ccffad25 704 qeth_l2_add_mc(card, ha->addr, 1);
7db2266a 705
4a71df50
FB		 706 spin_unlock_bh(&card->mclock);
707 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
708 return;
709 qeth_setadp_promisc_mode(card);
710}
711
712static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
713{
714 int rc;
715 struct qeth_hdr *hdr = NULL;
716 int elements = 0;
509e2562 717 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 718 struct sk_buff *new_skb = skb;
719 int ipv = qeth_get_ip_version(skb);
ce73e10e 720 int cast_type = qeth_l2_get_cast_type(card, skb);
4a71df50
FB		 721 struct qeth_qdio_out_q *queue = card->qdio.out_qs
722 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
723 int tx_bytes = skb->len;
683d718a
FB		 724 int data_offset = -1;
725 int elements_needed = 0;
726 int hd_len = 0;
4a71df50 727
4a71df50
FB		 728 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
729 card->stats.tx_carrier_errors++;
730 goto tx_drop;
731 }
732
733 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
734 (skb->protocol == htons(ETH_P_IPV6)))
735 goto tx_drop;
736
737 if (card->options.performance_stats) {
738 card->perf_stats.outbound_cnt++;
739 card->perf_stats.outbound_start_time = qeth_get_micros();
740 }
741 netif_stop_queue(dev);
742
4a71df50
FB		 743 if (card->info.type == QETH_CARD_TYPE_OSN)
744 hdr = (struct qeth_hdr *)skb->data;
745 else {
64ef8957 746 if (card->info.type == QETH_CARD_TYPE_IQD) {
683d718a
FB		 747 new_skb = skb;
748 data_offset = ETH_HLEN;
749 hd_len = ETH_HLEN;
750 hdr = kmem_cache_alloc(qeth_core_header_cache,
751 GFP_ATOMIC);
752 if (!hdr)
753 goto tx_drop;
754 elements_needed++;
755 skb_reset_mac_header(new_skb);
756 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
757 hdr->hdr.l2.pkt_length = new_skb->len;
758 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
759 skb_mac_header(new_skb), ETH_HLEN);
760 } else {
761 /* create a clone with writeable headroom */
762 new_skb = skb_realloc_headroom(skb,
763 sizeof(struct qeth_hdr));
764 if (!new_skb)
765 goto tx_drop;
766 hdr = (struct qeth_hdr *)skb_push(new_skb,
f90b744e 767 sizeof(struct qeth_hdr));
683d718a
FB		 768 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
769 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
770 }
4a71df50
FB		 771 }
772
64ef8957 773 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
683d718a 774 elements_needed);
64ef8957
FB		 775 if (!elements) {
776 if (data_offset >= 0)
777 kmem_cache_free(qeth_core_header_cache, hdr);
778 goto tx_drop;
f61a0d05 779 }
4a71df50 780
51aa165c
FB		 781 if (card->info.type != QETH_CARD_TYPE_IQD) {
782 if (qeth_hdr_chk_and_bounce(new_skb,
783 sizeof(struct qeth_hdr_layer2)))
784 goto tx_drop;
4a71df50 785 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
64ef8957 786 elements);
51aa165c 787 } else
4a71df50 788 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
64ef8957 789 elements, data_offset, hd_len);
4a71df50
FB		 790 if (!rc) {
791 card->stats.tx_packets++;
792 card->stats.tx_bytes += tx_bytes;
793 if (new_skb != skb)
794 dev_kfree_skb_any(skb);
ec634fe3 795 rc = NETDEV_TX_OK;
4a71df50 796 } else {
683d718a
FB		 797 if (data_offset >= 0)
798 kmem_cache_free(qeth_core_header_cache, hdr);
799
4a71df50
FB		 800 if (rc == -EBUSY) {
801 if (new_skb != skb)
802 dev_kfree_skb_any(new_skb);
803 return NETDEV_TX_BUSY;
804 } else
805 goto tx_drop;
806 }
807
808 netif_wake_queue(dev);
809 if (card->options.performance_stats)
810 card->perf_stats.outbound_time += qeth_get_micros() -
811 card->perf_stats.outbound_start_time;
812 return rc;
813
814tx_drop:
815 card->stats.tx_dropped++;
816 card->stats.tx_errors++;
817 if ((new_skb != skb) && new_skb)
818 dev_kfree_skb_any(new_skb);
819 dev_kfree_skb_any(skb);
d0ec0f54 820 netif_wake_queue(dev);
4a71df50
FB		 821 return NETDEV_TX_OK;
822}
823
39423440 824static int __qeth_l2_open(struct net_device *dev)
4a71df50 825{
509e2562 826 struct qeth_card *card = dev->ml_priv;
a1c3ed4c 827 int rc = 0;
4a71df50 828
847a50fd 829 QETH_CARD_TEXT(card, 4, "qethopen");
39423440
UB		 830 if (card->state == CARD_STATE_UP)
831 return rc;
4a71df50
FB		 832 if (card->state != CARD_STATE_SOFTSETUP)
833 return -ENODEV;
834
835 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
836 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
847a50fd 837 QETH_CARD_TEXT(card, 4, "nomacadr");
4a71df50
FB		 838 return -EPERM;
839 }
840 card->data.state = CH_STATE_UP;
841 card->state = CARD_STATE_UP;
4a71df50
FB		 842 netif_start_queue(dev);
843
a1c3ed4c
FB		 844 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
845 napi_enable(&card->napi);
846 napi_schedule(&card->napi);
847 } else
848 rc = -EIO;
849 return rc;
4a71df50
FB		 850}
851
39423440
UB		 852static int qeth_l2_open(struct net_device *dev)
853{
854 struct qeth_card *card = dev->ml_priv;
855
856 QETH_CARD_TEXT(card, 5, "qethope_");
857 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
858 QETH_CARD_TEXT(card, 3, "openREC");
859 return -ERESTARTSYS;
860 }
861 return __qeth_l2_open(dev);
862}
863
4a71df50
FB		 864static int qeth_l2_stop(struct net_device *dev)
865{
509e2562 866 struct qeth_card *card = dev->ml_priv;
4a71df50 867
847a50fd 868 QETH_CARD_TEXT(card, 4, "qethstop");
4a71df50 869 netif_tx_disable(dev);
a1c3ed4c 870 if (card->state == CARD_STATE_UP) {
4a71df50 871 card->state = CARD_STATE_SOFTSETUP;
a1c3ed4c
FB		 872 napi_disable(&card->napi);
873 }
4a71df50
FB		 874 return 0;
875}
876
877static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
878{
879 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
880
881 INIT_LIST_HEAD(&card->vid_list);
882 INIT_LIST_HEAD(&card->mc_list);
883 card->options.layer2 = 1;
1da74b1c 884 card->info.hwtrap = 0;
4a71df50
FB		 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,
afc4b13d 927 .ndo_set_rx_mode = qeth_l2_set_multicast_list,
8403b13c
FB		 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
1da74b1c
FB		 997 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
998 if (card->info.hwtrap &&
999 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1000 card->info.hwtrap = 0;
1001 } else
1002 card->info.hwtrap = 0;
1003
4a71df50 1004 card->state = CARD_STATE_HARDSETUP;
a1c3ed4c 1005 memset(&card->rx, 0, sizeof(struct qeth_rx));
4a71df50
FB		 1006 qeth_print_status_message(card);
1007
1008 /* softsetup */
d11ba0c4 1009 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50
FB		 1010
1011 rc = qeth_send_startlan(card);
1012 if (rc) {
d11ba0c4 1013 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50 1014 if (rc == 0xe080) {
74eacdb9
FB		 1015 dev_warn(&card->gdev->dev,
1016 "The LAN is offline\n");
4a71df50 1017 card->lan_online = 0;
2b6203bb 1018 goto contin;
4a71df50 1019 }
aa909224 1020 rc = -ENODEV;
f2148565 1021 goto out_remove;
4a71df50
FB		 1022 } else
1023 card->lan_online = 1;
1024
2b6203bb 1025contin:
5113fec0
UB		 1026 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1027 (card->info.type == QETH_CARD_TYPE_OSX))
d64ecc22
EL		 1028 /* configure isolation level */
1029 qeth_set_access_ctrl_online(card);
5113fec0
UB		 1030
1031 if (card->info.type != QETH_CARD_TYPE_OSN &&
1032 card->info.type != QETH_CARD_TYPE_OSM)
70919e23 1033 qeth_l2_process_vlans(card);
4a71df50
FB		 1034
1035 netif_tx_disable(card->dev);
1036
1037 rc = qeth_init_qdio_queues(card);
1038 if (rc) {
d11ba0c4 1039 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
aa909224 1040 rc = -ENODEV;
4a71df50
FB		 1041 goto out_remove;
1042 }
1043 card->state = CARD_STATE_SOFTSETUP;
2b6203bb
UB		 1044 if (card->lan_online)
1045 netif_carrier_on(card->dev);
1046 else
1047 netif_carrier_off(card->dev);
4a71df50
FB		 1048
1049 qeth_set_allowed_threads(card, 0xffffffff, 0);
1050 if (recover_flag == CARD_STATE_RECOVER) {
1051 if (recovery_mode &&
1052 card->info.type != QETH_CARD_TYPE_OSN) {
39423440 1053 __qeth_l2_open(card->dev);
4a71df50
FB		 1054 } else {
1055 rtnl_lock();
1056 dev_open(card->dev);
1057 rtnl_unlock();
1058 }
1059 /* this also sets saved unicast addresses */
1060 qeth_l2_set_multicast_list(card->dev);
1061 }
1062 /* let user_space know that device is online */
1063 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
c4949f07 1064 mutex_unlock(&card->conf_mutex);
9dc48ccc 1065 mutex_unlock(&card->discipline_mutex);
4a71df50 1066 return 0;
aa909224 1067
4a71df50 1068out_remove:
4a71df50
FB		 1069 qeth_l2_stop_card(card, 0);
1070 ccw_device_set_offline(CARD_DDEV(card));
1071 ccw_device_set_offline(CARD_WDEV(card));
1072 ccw_device_set_offline(CARD_RDEV(card));
1073 if (recover_flag == CARD_STATE_RECOVER)
1074 card->state = CARD_STATE_RECOVER;
1075 else
1076 card->state = CARD_STATE_DOWN;
c4949f07 1077 mutex_unlock(&card->conf_mutex);
9dc48ccc 1078 mutex_unlock(&card->discipline_mutex);
aa909224 1079 return rc;
4a71df50
FB		 1080}
1081
1082static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1083{
1084 return __qeth_l2_set_online(gdev, 0);
1085}
1086
1087static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1088 int recovery_mode)
1089{
1090 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1091 int rc = 0, rc2 = 0, rc3 = 0;
1092 enum qeth_card_states recover_flag;
1093
9dc48ccc 1094 mutex_lock(&card->discipline_mutex);
c4949f07 1095 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 1096 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1097 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1098
1099 if (card->dev && netif_carrier_ok(card->dev))
1100 netif_carrier_off(card->dev);
1101 recover_flag = card->state;
1da74b1c
FB		 1102 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1103 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1104 card->info.hwtrap = 1;
1105 }
0f5623c9 1106 qeth_l2_stop_card(card, recovery_mode);
4a71df50
FB		 1107 rc = ccw_device_set_offline(CARD_DDEV(card));
1108 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1109 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1110 if (!rc)
1111 rc = (rc2) ? rc2 : rc3;
1112 if (rc)
d11ba0c4 1113 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 1114 if (recover_flag == CARD_STATE_UP)
1115 card->state = CARD_STATE_RECOVER;
1116 /* let user_space know that device is offline */
1117 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
c4949f07 1118 mutex_unlock(&card->conf_mutex);
9dc48ccc 1119 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 1120 return 0;
1121}
1122
1123static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1124{
1125 return __qeth_l2_set_offline(cgdev, 0);
1126}
1127
1128static int qeth_l2_recover(void *ptr)
1129{
1130 struct qeth_card *card;
1131 int rc = 0;
1132
1133 card = (struct qeth_card *) ptr;
847a50fd 1134 QETH_CARD_TEXT(card, 2, "recover1");
4a71df50
FB		 1135 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1136 return 0;
847a50fd 1137 QETH_CARD_TEXT(card, 2, "recover2");
74eacdb9
FB		 1138 dev_warn(&card->gdev->dev,
1139 "A recovery process has been started for the device\n");
4a71df50
FB		 1140 __qeth_l2_set_offline(card->gdev, 1);
1141 rc = __qeth_l2_set_online(card->gdev, 1);
4a71df50 1142 if (!rc)
74eacdb9
FB		 1143 dev_info(&card->gdev->dev,
1144 "Device successfully recovered!\n");
28a7e4c9 1145 else {
869da90b
UB		 1146 rtnl_lock();
1147 dev_close(card->dev);
1148 rtnl_unlock();
74eacdb9
FB		 1149 dev_warn(&card->gdev->dev, "The qeth device driver "
1150 "failed to recover an error on the device\n");
28a7e4c9 1151 }
a1c3ed4c
FB		 1152 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1153 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
4a71df50
FB		 1154 return 0;
1155}
1156
1157static int __init qeth_l2_init(void)
1158{
74eacdb9 1159 pr_info("register layer 2 discipline\n");
4a71df50
FB		 1160 return 0;
1161}
1162
1163static void __exit qeth_l2_exit(void)
1164{
74eacdb9 1165 pr_info("unregister layer 2 discipline\n");
4a71df50
FB		 1166}
1167
1168static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1169{
1170 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
f78ac2bb 1171 qeth_set_allowed_threads(card, 0, 1);
1da74b1c
FB		 1172 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1173 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
4a71df50
FB		 1174 qeth_qdio_clear_card(card, 0);
1175 qeth_clear_qdio_buffers(card);
1176}
1177
bbcfcdc8
FB		 1178static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1179{
1180 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1181
1182 if (card->dev)
1183 netif_device_detach(card->dev);
1184 qeth_set_allowed_threads(card, 0, 1);
1185 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1186 if (gdev->state == CCWGROUP_OFFLINE)
1187 return 0;
1188 if (card->state == CARD_STATE_UP) {
1da74b1c
FB		 1189 if (card->info.hwtrap)
1190 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
bbcfcdc8
FB		 1191 __qeth_l2_set_offline(card->gdev, 1);
1192 } else
1193 __qeth_l2_set_offline(card->gdev, 0);
1194 return 0;
1195}
1196
1197static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1198{
1199 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1200 int rc = 0;
1201
1202 if (gdev->state == CCWGROUP_OFFLINE)
1203 goto out;
1204
1205 if (card->state == CARD_STATE_RECOVER) {
1206 rc = __qeth_l2_set_online(card->gdev, 1);
1207 if (rc) {
869da90b
UB		 1208 rtnl_lock();
1209 dev_close(card->dev);
1210 rtnl_unlock();
bbcfcdc8
FB		 1211 }
1212 } else
1213 rc = __qeth_l2_set_online(card->gdev, 0);
1214out:
1215 qeth_set_allowed_threads(card, 0xffffffff, 0);
1216 if (card->dev)
1217 netif_device_attach(card->dev);
1218 if (rc)
1219 dev_warn(&card->gdev->dev, "The qeth device driver "
1220 "failed to recover an error on the device\n");
1221 return rc;
1222}
1223
c041f2d4
SO		 1224struct qeth_discipline qeth_l2_discipline = {
1225 .start_poll = qeth_qdio_start_poll,
1226 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1227 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1228 .recover = qeth_l2_recover,
1229 .setup = qeth_l2_probe_device,
4a71df50
FB		 1230 .remove = qeth_l2_remove_device,
1231 .set_online = qeth_l2_set_online,
1232 .set_offline = qeth_l2_set_offline,
1233 .shutdown = qeth_l2_shutdown,
bbcfcdc8
FB		 1234 .freeze = qeth_l2_pm_suspend,
1235 .thaw = qeth_l2_pm_resume,
1236 .restore = qeth_l2_pm_resume,
4a71df50 1237};
c041f2d4 1238EXPORT_SYMBOL_GPL(qeth_l2_discipline);
4a71df50
FB		 1239
1240static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1241 struct qeth_cmd_buffer *iob)
1242{
1243 unsigned long flags;
1244 int rc = 0;
1245
847a50fd 1246 QETH_CARD_TEXT(card, 5, "osndctrd");
4a71df50
FB		 1247
1248 wait_event(card->wait_q,
1249 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1250 qeth_prepare_control_data(card, len, iob);
847a50fd 1251 QETH_CARD_TEXT(card, 6, "osnoirqp");
4a71df50
FB		 1252 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1253 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1254 (addr_t) iob, 0, 0);
1255 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1256 if (rc) {
14cc21b6 1257 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
4a71df50 1258 "ccw_device_start rc = %i\n", rc);
847a50fd 1259 QETH_CARD_TEXT_(card, 2, " err%d", rc);
4a71df50
FB		 1260 qeth_release_buffer(iob->channel, iob);
1261 atomic_set(&card->write.irq_pending, 0);
1262 wake_up(&card->wait_q);
1263 }
1264 return rc;
1265}
1266
1267static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1268 struct qeth_cmd_buffer *iob, int data_len)
1269{
1270 u16 s1, s2;
1271
847a50fd 1272 QETH_CARD_TEXT(card, 4, "osndipa");
4a71df50
FB		 1273
1274 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1275 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1276 s2 = (u16)data_len;
1277 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1278 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1279 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1280 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1281 return qeth_osn_send_control_data(card, s1, iob);
1282}
1283
1284int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1285{
1286 struct qeth_cmd_buffer *iob;
1287 struct qeth_card *card;
1288 int rc;
1289
4a71df50
FB		 1290 if (!dev)
1291 return -ENODEV;
509e2562 1292 card = dev->ml_priv;
4a71df50
FB		 1293 if (!card)
1294 return -ENODEV;
847a50fd 1295 QETH_CARD_TEXT(card, 2, "osnsdmc");
4a71df50
FB		 1296 if ((card->state != CARD_STATE_UP) &&
1297 (card->state != CARD_STATE_SOFTSETUP))
1298 return -ENODEV;
1299 iob = qeth_wait_for_buffer(&card->write);
1300 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1301 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1302 return rc;
1303}
1304EXPORT_SYMBOL(qeth_osn_assist);
1305
1306int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1307 int (*assist_cb)(struct net_device *, void *),
1308 int (*data_cb)(struct sk_buff *))
1309{
1310 struct qeth_card *card;
1311
4a71df50
FB		 1312 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1313 if (*dev == NULL)
1314 return -ENODEV;
509e2562 1315 card = (*dev)->ml_priv;
4a71df50
FB		 1316 if (!card)
1317 return -ENODEV;
847a50fd 1318 QETH_CARD_TEXT(card, 2, "osnreg");
4a71df50
FB		 1319 if ((assist_cb == NULL) || (data_cb == NULL))
1320 return -EINVAL;
1321 card->osn_info.assist_cb = assist_cb;
1322 card->osn_info.data_cb = data_cb;
1323 return 0;
1324}
1325EXPORT_SYMBOL(qeth_osn_register);
1326
1327void qeth_osn_deregister(struct net_device *dev)
1328{
1329 struct qeth_card *card;
1330
4a71df50
FB		 1331 if (!dev)
1332 return;
509e2562 1333 card = dev->ml_priv;
4a71df50
FB		 1334 if (!card)
1335 return;
847a50fd 1336 QETH_CARD_TEXT(card, 2, "osndereg");
4a71df50
FB		 1337 card->osn_info.assist_cb = NULL;
1338 card->osn_info.data_cb = NULL;
1339 return;
1340}
1341EXPORT_SYMBOL(qeth_osn_deregister);
1342
1343module_init(qeth_l2_init);
1344module_exit(qeth_l2_exit);
1345MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1346MODULE_DESCRIPTION("qeth layer 2 discipline");
1347MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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