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bonding: use bond_is_lb() when it's appropriate
[deliverable/linux.git] / drivers / s390 / net / qeth_l2_main.c
CommitLineData
4a71df50
FB		 1/*
2 * drivers/s390/net/qeth_l2_main.c
3 *
4 * Copyright IBM Corp. 2007
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
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>
19#include <linux/etherdevice.h>
20#include <linux/mii.h>
21#include <linux/ip.h>
22
4a71df50 23#include "qeth_core.h"
4a71df50 24
4a71df50
FB		 25static int qeth_l2_set_offline(struct ccwgroup_device *);
26static int qeth_l2_stop(struct net_device *);
27static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
28static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
29 enum qeth_ipa_cmds,
30 int (*reply_cb) (struct qeth_card *,
31 struct qeth_reply*,
32 unsigned long));
33static void qeth_l2_set_multicast_list(struct net_device *);
34static int qeth_l2_recover(void *);
35
36static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
37{
509e2562 38 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 39 struct mii_ioctl_data *mii_data;
40 int rc = 0;
41
42 if (!card)
43 return -ENODEV;
44
45 if ((card->state != CARD_STATE_UP) &&
46 (card->state != CARD_STATE_SOFTSETUP))
47 return -ENODEV;
48
49 if (card->info.type == QETH_CARD_TYPE_OSN)
50 return -EPERM;
51
52 switch (cmd) {
53 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
54 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
55 break;
56 case SIOC_QETH_GET_CARD_TYPE:
57 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
58 !card->info.guestlan)
59 return 1;
60 return 0;
61 break;
62 case SIOCGMIIPHY:
63 mii_data = if_mii(rq);
64 mii_data->phy_id = 0;
65 break;
66 case SIOCGMIIREG:
67 mii_data = if_mii(rq);
68 if (mii_data->phy_id != 0)
69 rc = -EINVAL;
70 else
71 mii_data->val_out = qeth_mdio_read(dev,
72 mii_data->phy_id, mii_data->reg_num);
73 break;
74 default:
75 rc = -EOPNOTSUPP;
76 }
77 if (rc)
d11ba0c4 78 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
4a71df50
FB		 79 return rc;
80}
81
82static int qeth_l2_verify_dev(struct net_device *dev)
83{
84 struct qeth_card *card;
85 unsigned long flags;
86 int rc = 0;
87
88 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
89 list_for_each_entry(card, &qeth_core_card_list.list, list) {
90 if (card->dev == dev) {
91 rc = QETH_REAL_CARD;
92 break;
93 }
94 }
95 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
96
97 return rc;
98}
99
100static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
101{
102 struct qeth_card *card;
103 struct net_device *ndev;
f06f6f32 104 __u16 temp_dev_no;
4a71df50 105 unsigned long flags;
f06f6f32 106 struct ccw_dev_id read_devid;
4a71df50
FB		 107
108 ndev = NULL;
109 memcpy(&temp_dev_no, read_dev_no, 2);
110 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
111 list_for_each_entry(card, &qeth_core_card_list.list, list) {
f06f6f32
CH		 112 ccw_device_get_id(CARD_RDEV(card), &read_devid);
113 if (read_devid.devno == temp_dev_no) {
4a71df50
FB		 114 ndev = card->dev;
115 break;
116 }
117 }
118 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
119 return ndev;
120}
121
122static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
123 struct qeth_reply *reply,
124 unsigned long data)
125{
126 struct qeth_ipa_cmd *cmd;
127 __u8 *mac;
128
d11ba0c4 129 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
4a71df50
FB		 130 cmd = (struct qeth_ipa_cmd *) data;
131 mac = &cmd->data.setdelmac.mac[0];
132 /* MAC already registered, needed in couple/uncouple case */
0666eb06 133 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
7c510e4b
JB		 134 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
135 mac, QETH_CARD_IFNAME(card));
4a71df50
FB		 136 cmd->hdr.return_code = 0;
137 }
138 if (cmd->hdr.return_code)
7c510e4b
JB		 139 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
140 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
4a71df50
FB		 141 return 0;
142}
143
144static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
145{
d11ba0c4 146 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
4a71df50
FB		 147 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
148 qeth_l2_send_setgroupmac_cb);
149}
150
151static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
152 struct qeth_reply *reply,
153 unsigned long data)
154{
155 struct qeth_ipa_cmd *cmd;
156 __u8 *mac;
157
d11ba0c4 158 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
4a71df50
FB		 159 cmd = (struct qeth_ipa_cmd *) data;
160 mac = &cmd->data.setdelmac.mac[0];
161 if (cmd->hdr.return_code)
7c510e4b
JB		 162 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
163 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
4a71df50
FB		 164 return 0;
165}
166
167static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
168{
d11ba0c4 169 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
4a71df50
FB		 170 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
171 qeth_l2_send_delgroupmac_cb);
172}
173
7db2266a 174static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
4a71df50
FB		 175{
176 struct qeth_mc_mac *mc;
7db2266a 177 int rc;
4a71df50
FB		 178
179 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
180
14cc21b6 181 if (!mc)
4a71df50 182 return;
4a71df50
FB		 183
184 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
185 mc->mc_addrlen = OSA_ADDR_LEN;
7db2266a
FB		 186 mc->is_vmac = vmac;
187
188 if (vmac) {
189 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
190 NULL);
191 } else {
192 rc = qeth_l2_send_setgroupmac(card, mac);
193 }
4a71df50 194
7db2266a 195 if (!rc)
4a71df50
FB		 196 list_add_tail(&mc->list, &card->mc_list);
197 else
198 kfree(mc);
199}
200
201static void qeth_l2_del_all_mc(struct qeth_card *card)
202{
203 struct qeth_mc_mac *mc, *tmp;
204
205 spin_lock_bh(&card->mclock);
206 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
7db2266a
FB		 207 if (mc->is_vmac)
208 qeth_l2_send_setdelmac(card, mc->mc_addr,
209 IPA_CMD_DELVMAC, NULL);
210 else
211 qeth_l2_send_delgroupmac(card, mc->mc_addr);
4a71df50
FB		 212 list_del(&mc->list);
213 kfree(mc);
214 }
215 spin_unlock_bh(&card->mclock);
216}
217
218static void qeth_l2_get_packet_type(struct qeth_card *card,
219 struct qeth_hdr *hdr, struct sk_buff *skb)
220{
221 __u16 hdr_mac;
222
223 if (!memcmp(skb->data + QETH_HEADER_SIZE,
224 skb->dev->broadcast, 6)) {
225 /* broadcast? */
226 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
227 return;
228 }
229 hdr_mac = *((__u16 *)skb->data);
230 /* tr multicast? */
231 switch (card->info.link_type) {
232 case QETH_LINK_TYPE_HSTR:
233 case QETH_LINK_TYPE_LANE_TR:
234 if ((hdr_mac == QETH_TR_MAC_NC) ||
235 (hdr_mac == QETH_TR_MAC_C))
236 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
237 else
238 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
239 break;
240 /* eth or so multicast? */
241 default:
242 if ((hdr_mac == QETH_ETH_MAC_V4) ||
243 (hdr_mac == QETH_ETH_MAC_V6))
244 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
245 else
246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
247 }
248}
249
250static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
251 struct sk_buff *skb, int ipv, int cast_type)
252{
683d718a 253 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
4a71df50
FB		 254
255 memset(hdr, 0, sizeof(struct qeth_hdr));
256 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
257
258 /* set byte byte 3 to casting flags */
259 if (cast_type == RTN_MULTICAST)
260 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
261 else if (cast_type == RTN_BROADCAST)
262 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
263 else
264 qeth_l2_get_packet_type(card, hdr, skb);
265
266 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
267 /* VSWITCH relies on the VLAN
268 * information to be present in
269 * the QDIO header */
270 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
271 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
272 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
273 }
274}
275
276static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
277 struct qeth_reply *reply, unsigned long data)
278{
279 struct qeth_ipa_cmd *cmd;
280
d11ba0c4 281 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
4a71df50
FB		 282 cmd = (struct qeth_ipa_cmd *) data;
283 if (cmd->hdr.return_code) {
14cc21b6 284 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
4a71df50
FB		 285 "Continuing\n", cmd->data.setdelvlan.vlan_id,
286 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
d11ba0c4
PT		 287 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
288 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
289 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 290 }
291 return 0;
292}
293
294static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
295 enum qeth_ipa_cmds ipacmd)
296{
297 struct qeth_ipa_cmd *cmd;
298 struct qeth_cmd_buffer *iob;
299
d11ba0c4 300 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
4a71df50
FB		 301 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
302 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
303 cmd->data.setdelvlan.vlan_id = i;
304 return qeth_send_ipa_cmd(card, iob,
305 qeth_l2_send_setdelvlan_cb, NULL);
306}
307
308static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
309{
310 struct qeth_vlan_vid *id;
d11ba0c4 311 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
4a71df50
FB		 312 spin_lock_bh(&card->vlanlock);
313 list_for_each_entry(id, &card->vid_list, list) {
314 if (clear)
315 qeth_l2_send_setdelvlan(card, id->vid,
316 IPA_CMD_DELVLAN);
317 else
318 qeth_l2_send_setdelvlan(card, id->vid,
319 IPA_CMD_SETVLAN);
320 }
321 spin_unlock_bh(&card->vlanlock);
322}
323
324static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
325{
509e2562 326 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 327 struct qeth_vlan_vid *id;
328
d11ba0c4 329 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
8e98ac48
UB		 330 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
331 QETH_DBF_TEXT(TRACE, 3, "aidREC");
332 return;
333 }
4a71df50
FB		 334 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
335 if (id) {
336 id->vid = vid;
337 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
338 spin_lock_bh(&card->vlanlock);
339 list_add_tail(&id->list, &card->vid_list);
340 spin_unlock_bh(&card->vlanlock);
4a71df50
FB		 341 }
342}
343
344static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
345{
346 struct qeth_vlan_vid *id, *tmpid = NULL;
509e2562 347 struct qeth_card *card = dev->ml_priv;
4a71df50 348
d11ba0c4 349 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
8e98ac48
UB		 350 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
351 QETH_DBF_TEXT(TRACE, 3, "kidREC");
352 return;
353 }
4a71df50
FB		 354 spin_lock_bh(&card->vlanlock);
355 list_for_each_entry(id, &card->vid_list, list) {
356 if (id->vid == vid) {
357 list_del(&id->list);
358 tmpid = id;
359 break;
360 }
361 }
362 spin_unlock_bh(&card->vlanlock);
363 if (tmpid) {
364 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
365 kfree(tmpid);
366 }
367 qeth_l2_set_multicast_list(card->dev);
368}
369
370static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
371{
372 int rc = 0;
373
d11ba0c4
PT		 374 QETH_DBF_TEXT(SETUP , 2, "stopcard");
375 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 376
377 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 378 if (card->read.state == CH_STATE_UP &&
379 card->write.state == CH_STATE_UP &&
380 (card->state == CARD_STATE_UP)) {
381 if (recovery_mode &&
382 card->info.type != QETH_CARD_TYPE_OSN) {
383 qeth_l2_stop(card->dev);
384 } else {
385 rtnl_lock();
386 dev_close(card->dev);
387 rtnl_unlock();
388 }
932e1583
KDW		 389 if (!card->use_hard_stop ||
390 recovery_mode) {
4a71df50
FB		 391 __u8 *mac = &card->dev->dev_addr[0];
392 rc = qeth_l2_send_delmac(card, mac);
d11ba0c4 393 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
4a71df50
FB		 394 }
395 card->state = CARD_STATE_SOFTSETUP;
396 }
397 if (card->state == CARD_STATE_SOFTSETUP) {
398 qeth_l2_process_vlans(card, 1);
932e1583
KDW		 399 if (!card->use_hard_stop ||
400 recovery_mode)
28a7e4c9 401 qeth_l2_del_all_mc(card);
4a71df50
FB		 402 qeth_clear_ipacmd_list(card);
403 card->state = CARD_STATE_HARDSETUP;
404 }
405 if (card->state == CARD_STATE_HARDSETUP) {
406 qeth_qdio_clear_card(card, 0);
407 qeth_clear_qdio_buffers(card);
408 qeth_clear_working_pool_list(card);
409 card->state = CARD_STATE_DOWN;
410 }
411 if (card->state == CARD_STATE_DOWN) {
412 qeth_clear_cmd_buffers(&card->read);
413 qeth_clear_cmd_buffers(&card->write);
414 }
415 card->use_hard_stop = 0;
416 return rc;
417}
418
419static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
420 struct qeth_qdio_buffer *buf, int index)
421{
422 struct qdio_buffer_element *element;
423 struct sk_buff *skb;
424 struct qeth_hdr *hdr;
425 int offset;
426 unsigned int len;
427
428 /* get first element of current buffer */
429 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
430 offset = 0;
431 if (card->options.performance_stats)
432 card->perf_stats.bufs_rec++;
433 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
434 &offset, &hdr))) {
435 skb->dev = card->dev;
436 /* is device UP ? */
437 if (!(card->dev->flags & IFF_UP)) {
438 dev_kfree_skb_any(skb);
439 continue;
440 }
441
442 switch (hdr->hdr.l2.id) {
443 case QETH_HEADER_TYPE_LAYER2:
444 skb->pkt_type = PACKET_HOST;
445 skb->protocol = eth_type_trans(skb, skb->dev);
446 if (card->options.checksum_type == NO_CHECKSUMMING)
447 skb->ip_summed = CHECKSUM_UNNECESSARY;
448 else
449 skb->ip_summed = CHECKSUM_NONE;
12883725
UB		 450 if (skb->protocol == htons(ETH_P_802_2))
451 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
4a71df50
FB		 452 len = skb->len;
453 netif_rx(skb);
454 break;
455 case QETH_HEADER_TYPE_OSN:
2d488c2f
UB		 456 if (card->info.type == QETH_CARD_TYPE_OSN) {
457 skb_push(skb, sizeof(struct qeth_hdr));
458 skb_copy_to_linear_data(skb, hdr,
4a71df50 459 sizeof(struct qeth_hdr));
2d488c2f
UB		 460 len = skb->len;
461 card->osn_info.data_cb(skb);
462 break;
463 }
464 /* else unknown */
4a71df50
FB		 465 default:
466 dev_kfree_skb_any(skb);
d11ba0c4
PT		 467 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
468 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 469 continue;
470 }
471 card->dev->last_rx = jiffies;
472 card->stats.rx_packets++;
473 card->stats.rx_bytes += len;
474 }
475}
476
477static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
478 enum qeth_ipa_cmds ipacmd,
479 int (*reply_cb) (struct qeth_card *,
480 struct qeth_reply*,
481 unsigned long))
482{
483 struct qeth_ipa_cmd *cmd;
484 struct qeth_cmd_buffer *iob;
485
d11ba0c4 486 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
4a71df50
FB		 487 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
488 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
489 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
490 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
491 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
492}
493
494static int qeth_l2_send_setmac_cb(struct qeth_card *card,
495 struct qeth_reply *reply,
496 unsigned long data)
497{
498 struct qeth_ipa_cmd *cmd;
499
d11ba0c4 500 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
4a71df50
FB		 501 cmd = (struct qeth_ipa_cmd *) data;
502 if (cmd->hdr.return_code) {
d11ba0c4 503 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
4a71df50 504 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
0666eb06
UB		 505 switch (cmd->hdr.return_code) {
506 case IPA_RC_L2_DUP_MAC:
507 case IPA_RC_L2_DUP_LAYER3_MAC:
508 dev_warn(&card->gdev->dev,
509 "MAC address "
510 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
511 "already exists\n",
512 card->dev->dev_addr[0], card->dev->dev_addr[1],
513 card->dev->dev_addr[2], card->dev->dev_addr[3],
514 card->dev->dev_addr[4], card->dev->dev_addr[5]);
515 break;
516 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
517 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
518 dev_warn(&card->gdev->dev,
519 "MAC address "
520 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
521 "is not authorized\n",
522 card->dev->dev_addr[0], card->dev->dev_addr[1],
523 card->dev->dev_addr[2], card->dev->dev_addr[3],
524 card->dev->dev_addr[4], card->dev->dev_addr[5]);
525 break;
526 default:
527 break;
528 }
4a71df50
FB		 529 cmd->hdr.return_code = -EIO;
530 } else {
531 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
532 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
533 OSA_ADDR_LEN);
74eacdb9
FB		 534 dev_info(&card->gdev->dev,
535 "MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
536 "successfully registered on device %s\n",
537 card->dev->dev_addr[0], card->dev->dev_addr[1],
538 card->dev->dev_addr[2], card->dev->dev_addr[3],
539 card->dev->dev_addr[4], card->dev->dev_addr[5],
540 card->dev->name);
4a71df50
FB		 541 }
542 return 0;
543}
544
545static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
546{
d11ba0c4 547 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
4a71df50
FB		 548 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
549 qeth_l2_send_setmac_cb);
550}
551
552static int qeth_l2_send_delmac_cb(struct qeth_card *card,
553 struct qeth_reply *reply,
554 unsigned long data)
555{
556 struct qeth_ipa_cmd *cmd;
557
d11ba0c4 558 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
4a71df50
FB		 559 cmd = (struct qeth_ipa_cmd *) data;
560 if (cmd->hdr.return_code) {
d11ba0c4 561 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 562 cmd->hdr.return_code = -EIO;
563 return 0;
564 }
565 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
566
567 return 0;
568}
569
570static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
571{
d11ba0c4 572 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
4a71df50
FB		 573 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
574 return 0;
575 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
576 qeth_l2_send_delmac_cb);
577}
578
579static int qeth_l2_request_initial_mac(struct qeth_card *card)
580{
581 int rc = 0;
582 char vendor_pre[] = {0x02, 0x00, 0x00};
583
d11ba0c4
PT		 584 QETH_DBF_TEXT(SETUP, 2, "doL2init");
585 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
4a71df50
FB		 586
587 rc = qeth_query_setadapterparms(card);
588 if (rc) {
14cc21b6
FB		 589 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
590 "device %s: x%x\n", CARD_BUS_ID(card), rc);
4a71df50
FB		 591 }
592
f1d58672
UB		 593 if ((card->info.type == QETH_CARD_TYPE_IQD) ||
594 (card->info.guestlan)) {
4a71df50
FB		 595 rc = qeth_setadpparms_change_macaddr(card);
596 if (rc) {
14cc21b6
FB		 597 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
598 "device %s: x%x\n", CARD_BUS_ID(card), rc);
d11ba0c4 599 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 600 return rc;
601 }
d11ba0c4 602 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
4a71df50
FB		 603 } else {
604 random_ether_addr(card->dev->dev_addr);
605 memcpy(card->dev->dev_addr, vendor_pre, 3);
606 }
607 return 0;
608}
609
610static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
611{
612 struct sockaddr *addr = p;
509e2562 613 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 614 int rc = 0;
615
d11ba0c4 616 QETH_DBF_TEXT(TRACE, 3, "setmac");
4a71df50
FB		 617
618 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
d11ba0c4 619 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
4a71df50
FB		 620 return -EOPNOTSUPP;
621 }
622
623 if (card->info.type == QETH_CARD_TYPE_OSN) {
d11ba0c4 624 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
4a71df50
FB		 625 return -EOPNOTSUPP;
626 }
d11ba0c4
PT		 627 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
628 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
8e98ac48
UB		 629 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
630 QETH_DBF_TEXT(TRACE, 3, "setmcREC");
631 return -ERESTARTSYS;
632 }
4a71df50
FB		 633 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
634 if (!rc)
635 rc = qeth_l2_send_setmac(card, addr->sa_data);
636 return rc;
637}
638
639static void qeth_l2_set_multicast_list(struct net_device *dev)
640{
509e2562 641 struct qeth_card *card = dev->ml_priv;
7db2266a 642 struct dev_addr_list *dm;
4a71df50
FB		 643
644 if (card->info.type == QETH_CARD_TYPE_OSN)
645 return ;
646
d11ba0c4 647 QETH_DBF_TEXT(TRACE, 3, "setmulti");
8e98ac48
UB		 648 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
649 (card->state != CARD_STATE_UP))
650 return;
4a71df50
FB		 651 qeth_l2_del_all_mc(card);
652 spin_lock_bh(&card->mclock);
653 for (dm = dev->mc_list; dm; dm = dm->next)
7db2266a
FB		 654 qeth_l2_add_mc(card, dm->da_addr, 0);
655
656 for (dm = dev->uc_list; dm; dm = dm->next)
657 qeth_l2_add_mc(card, dm->da_addr, 1);
658
4a71df50
FB		 659 spin_unlock_bh(&card->mclock);
660 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
661 return;
662 qeth_setadp_promisc_mode(card);
663}
664
665static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
666{
667 int rc;
668 struct qeth_hdr *hdr = NULL;
669 int elements = 0;
509e2562 670 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 671 struct sk_buff *new_skb = skb;
672 int ipv = qeth_get_ip_version(skb);
673 int cast_type = qeth_get_cast_type(card, skb);
674 struct qeth_qdio_out_q *queue = card->qdio.out_qs
675 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
676 int tx_bytes = skb->len;
683d718a
FB		 677 int data_offset = -1;
678 int elements_needed = 0;
679 int hd_len = 0;
4a71df50 680
4a71df50
FB		 681 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
682 card->stats.tx_carrier_errors++;
683 goto tx_drop;
684 }
685
686 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
687 (skb->protocol == htons(ETH_P_IPV6)))
688 goto tx_drop;
689
690 if (card->options.performance_stats) {
691 card->perf_stats.outbound_cnt++;
692 card->perf_stats.outbound_start_time = qeth_get_micros();
693 }
694 netif_stop_queue(dev);
695
4a71df50
FB		 696 if (card->info.type == QETH_CARD_TYPE_OSN)
697 hdr = (struct qeth_hdr *)skb->data;
698 else {
64ef8957 699 if (card->info.type == QETH_CARD_TYPE_IQD) {
683d718a
FB		 700 new_skb = skb;
701 data_offset = ETH_HLEN;
702 hd_len = ETH_HLEN;
703 hdr = kmem_cache_alloc(qeth_core_header_cache,
704 GFP_ATOMIC);
705 if (!hdr)
706 goto tx_drop;
707 elements_needed++;
708 skb_reset_mac_header(new_skb);
709 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
710 hdr->hdr.l2.pkt_length = new_skb->len;
711 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
712 skb_mac_header(new_skb), ETH_HLEN);
713 } else {
714 /* create a clone with writeable headroom */
715 new_skb = skb_realloc_headroom(skb,
716 sizeof(struct qeth_hdr));
717 if (!new_skb)
718 goto tx_drop;
719 hdr = (struct qeth_hdr *)skb_push(new_skb,
f90b744e 720 sizeof(struct qeth_hdr));
683d718a
FB		 721 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
722 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
723 }
4a71df50
FB		 724 }
725
64ef8957 726 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
683d718a 727 elements_needed);
64ef8957
FB		 728 if (!elements) {
729 if (data_offset >= 0)
730 kmem_cache_free(qeth_core_header_cache, hdr);
731 goto tx_drop;
f61a0d05 732 }
4a71df50
FB		 733
734 if (card->info.type != QETH_CARD_TYPE_IQD)
735 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
64ef8957 736 elements);
4a71df50
FB		 737 else
738 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
64ef8957 739 elements, data_offset, hd_len);
4a71df50
FB		 740 if (!rc) {
741 card->stats.tx_packets++;
742 card->stats.tx_bytes += tx_bytes;
743 if (new_skb != skb)
744 dev_kfree_skb_any(skb);
4a71df50 745 } else {
683d718a
FB		 746 if (data_offset >= 0)
747 kmem_cache_free(qeth_core_header_cache, hdr);
748
4a71df50
FB		 749 if (rc == -EBUSY) {
750 if (new_skb != skb)
751 dev_kfree_skb_any(new_skb);
752 return NETDEV_TX_BUSY;
753 } else
754 goto tx_drop;
755 }
756
757 netif_wake_queue(dev);
758 if (card->options.performance_stats)
759 card->perf_stats.outbound_time += qeth_get_micros() -
760 card->perf_stats.outbound_start_time;
761 return rc;
762
763tx_drop:
764 card->stats.tx_dropped++;
765 card->stats.tx_errors++;
766 if ((new_skb != skb) && new_skb)
767 dev_kfree_skb_any(new_skb);
768 dev_kfree_skb_any(skb);
d0ec0f54 769 netif_wake_queue(dev);
4a71df50
FB		 770 return NETDEV_TX_OK;
771}
772
773static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
779e6e1c 774 unsigned int qdio_err, unsigned int queue,
4a71df50
FB		 775 int first_element, int count, unsigned long card_ptr)
776{
777 struct net_device *net_dev;
778 struct qeth_card *card;
779 struct qeth_qdio_buffer *buffer;
780 int index;
781 int i;
782
4a71df50
FB		 783 card = (struct qeth_card *) card_ptr;
784 net_dev = card->dev;
785 if (card->options.performance_stats) {
786 card->perf_stats.inbound_cnt++;
787 card->perf_stats.inbound_start_time = qeth_get_micros();
788 }
779e6e1c
JG		 789 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
790 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
791 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
792 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
793 count);
794 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
795 qeth_schedule_recovery(card);
796 return;
4a71df50
FB		 797 }
798 for (i = first_element; i < (first_element + count); ++i) {
799 index = i % QDIO_MAX_BUFFERS_PER_Q;
800 buffer = &card->qdio.in_q->bufs[index];
779e6e1c
JG		 801 if (!(qdio_err &&
802 qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr")))
4a71df50
FB		 803 qeth_l2_process_inbound_buffer(card, buffer, index);
804 /* clear buffer and give back to hardware */
805 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
806 qeth_queue_input_buffer(card, index);
807 }
808 if (card->options.performance_stats)
809 card->perf_stats.inbound_time += qeth_get_micros() -
810 card->perf_stats.inbound_start_time;
811}
812
813static int qeth_l2_open(struct net_device *dev)
814{
509e2562 815 struct qeth_card *card = dev->ml_priv;
4a71df50 816
d11ba0c4 817 QETH_DBF_TEXT(TRACE, 4, "qethopen");
4a71df50
FB		 818 if (card->state != CARD_STATE_SOFTSETUP)
819 return -ENODEV;
820
821 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
822 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
d11ba0c4 823 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
4a71df50
FB		 824 return -EPERM;
825 }
826 card->data.state = CH_STATE_UP;
827 card->state = CARD_STATE_UP;
4a71df50
FB		 828 netif_start_queue(dev);
829
830 if (!card->lan_online && netif_carrier_ok(dev))
831 netif_carrier_off(dev);
832 return 0;
833}
834
835
836static int qeth_l2_stop(struct net_device *dev)
837{
509e2562 838 struct qeth_card *card = dev->ml_priv;
4a71df50 839
d11ba0c4 840 QETH_DBF_TEXT(TRACE, 4, "qethstop");
4a71df50 841 netif_tx_disable(dev);
4a71df50
FB		 842 if (card->state == CARD_STATE_UP)
843 card->state = CARD_STATE_SOFTSETUP;
844 return 0;
845}
846
847static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
848{
849 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
850
851 INIT_LIST_HEAD(&card->vid_list);
852 INIT_LIST_HEAD(&card->mc_list);
853 card->options.layer2 = 1;
854 card->discipline.input_handler = (qdio_handler_t *)
855 qeth_l2_qdio_input_handler;
856 card->discipline.output_handler = (qdio_handler_t *)
857 qeth_qdio_output_handler;
858 card->discipline.recover = qeth_l2_recover;
859 return 0;
860}
861
862static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
863{
864 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
865
f2148565 866 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 867 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
868
869 if (cgdev->state == CCWGROUP_ONLINE) {
870 card->use_hard_stop = 1;
871 qeth_l2_set_offline(cgdev);
872 }
873
874 if (card->dev) {
875 unregister_netdev(card->dev);
876 card->dev = NULL;
877 }
878
879 qeth_l2_del_all_mc(card);
880 return;
881}
882
883static struct ethtool_ops qeth_l2_ethtool_ops = {
884 .get_link = ethtool_op_get_link,
4a71df50
FB		 885 .get_strings = qeth_core_get_strings,
886 .get_ethtool_stats = qeth_core_get_ethtool_stats,
887 .get_stats_count = qeth_core_get_stats_count,
888 .get_drvinfo = qeth_core_get_drvinfo,
3f9975aa 889 .get_settings = qeth_core_ethtool_get_settings,
4a71df50
FB		 890};
891
892static struct ethtool_ops qeth_l2_osn_ops = {
893 .get_strings = qeth_core_get_strings,
894 .get_ethtool_stats = qeth_core_get_ethtool_stats,
895 .get_stats_count = qeth_core_get_stats_count,
896 .get_drvinfo = qeth_core_get_drvinfo,
897};
898
3d58cefd 899static const struct net_device_ops qeth_l2_netdev_ops = {
8403b13c
FB		 900 .ndo_open = qeth_l2_open,
901 .ndo_stop = qeth_l2_stop,
902 .ndo_get_stats = qeth_get_stats,
903 .ndo_start_xmit = qeth_l2_hard_start_xmit,
904 .ndo_validate_addr = eth_validate_addr,
905 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
906 .ndo_do_ioctl = qeth_l2_do_ioctl,
907 .ndo_set_mac_address = qeth_l2_set_mac_address,
908 .ndo_change_mtu = qeth_change_mtu,
909 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
910 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
911 .ndo_tx_timeout = qeth_tx_timeout,
912};
913
4a71df50
FB		 914static int qeth_l2_setup_netdev(struct qeth_card *card)
915{
916 switch (card->info.type) {
917 case QETH_CARD_TYPE_OSAE:
918 card->dev = alloc_etherdev(0);
919 break;
920 case QETH_CARD_TYPE_IQD:
921 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
922 break;
923 case QETH_CARD_TYPE_OSN:
924 card->dev = alloc_netdev(0, "osn%d", ether_setup);
925 card->dev->flags |= IFF_NOARP;
926 break;
927 default:
928 card->dev = alloc_etherdev(0);
929 }
930
931 if (!card->dev)
932 return -ENODEV;
933
509e2562 934 card->dev->ml_priv = card;
4a71df50 935 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
4a71df50 936 card->dev->mtu = card->info.initial_mtu;
8403b13c 937 card->dev->netdev_ops = &qeth_l2_netdev_ops;
4a71df50
FB		 938 if (card->info.type != QETH_CARD_TYPE_OSN)
939 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
940 else
941 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
942 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
943 card->info.broadcast_capable = 1;
944 qeth_l2_request_initial_mac(card);
945 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
946 return register_netdev(card->dev);
947}
948
949static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
950{
951 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
952 int rc = 0;
953 enum qeth_card_states recover_flag;
954
955 BUG_ON(!card);
d11ba0c4
PT		 956 QETH_DBF_TEXT(SETUP, 2, "setonlin");
957 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 958
959 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
4a71df50
FB		 960 recover_flag = card->state;
961 rc = ccw_device_set_online(CARD_RDEV(card));
962 if (rc) {
d11ba0c4 963 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 964 return -EIO;
965 }
966 rc = ccw_device_set_online(CARD_WDEV(card));
967 if (rc) {
d11ba0c4 968 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 969 return -EIO;
970 }
971 rc = ccw_device_set_online(CARD_DDEV(card));
972 if (rc) {
d11ba0c4 973 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 974 return -EIO;
975 }
976
977 rc = qeth_core_hardsetup_card(card);
978 if (rc) {
d11ba0c4 979 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4a71df50
FB		 980 goto out_remove;
981 }
982
983 if (!card->dev && qeth_l2_setup_netdev(card))
984 goto out_remove;
985
986 if (card->info.type != QETH_CARD_TYPE_OSN)
987 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
988
989 card->state = CARD_STATE_HARDSETUP;
990 qeth_print_status_message(card);
991
992 /* softsetup */
d11ba0c4 993 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50
FB		 994
995 rc = qeth_send_startlan(card);
996 if (rc) {
d11ba0c4 997 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50 998 if (rc == 0xe080) {
74eacdb9
FB		 999 dev_warn(&card->gdev->dev,
1000 "The LAN is offline\n");
4a71df50 1001 card->lan_online = 0;
f2148565 1002 return 0;
4a71df50 1003 }
f2148565 1004 goto out_remove;
4a71df50
FB		 1005 } else
1006 card->lan_online = 1;
1007
1008 if (card->info.type != QETH_CARD_TYPE_OSN) {
1009 qeth_set_large_send(card, card->options.large_send);
1010 qeth_l2_process_vlans(card, 0);
1011 }
1012
1013 netif_tx_disable(card->dev);
1014
1015 rc = qeth_init_qdio_queues(card);
1016 if (rc) {
d11ba0c4 1017 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4a71df50
FB		 1018 goto out_remove;
1019 }
1020 card->state = CARD_STATE_SOFTSETUP;
1021 netif_carrier_on(card->dev);
1022
1023 qeth_set_allowed_threads(card, 0xffffffff, 0);
1024 if (recover_flag == CARD_STATE_RECOVER) {
1025 if (recovery_mode &&
1026 card->info.type != QETH_CARD_TYPE_OSN) {
1027 qeth_l2_open(card->dev);
1028 } else {
1029 rtnl_lock();
1030 dev_open(card->dev);
1031 rtnl_unlock();
1032 }
1033 /* this also sets saved unicast addresses */
1034 qeth_l2_set_multicast_list(card->dev);
1035 }
1036 /* let user_space know that device is online */
1037 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1038 return 0;
1039out_remove:
1040 card->use_hard_stop = 1;
1041 qeth_l2_stop_card(card, 0);
1042 ccw_device_set_offline(CARD_DDEV(card));
1043 ccw_device_set_offline(CARD_WDEV(card));
1044 ccw_device_set_offline(CARD_RDEV(card));
1045 if (recover_flag == CARD_STATE_RECOVER)
1046 card->state = CARD_STATE_RECOVER;
1047 else
1048 card->state = CARD_STATE_DOWN;
1049 return -ENODEV;
1050}
1051
1052static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1053{
1054 return __qeth_l2_set_online(gdev, 0);
1055}
1056
1057static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1058 int recovery_mode)
1059{
1060 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1061 int rc = 0, rc2 = 0, rc3 = 0;
1062 enum qeth_card_states recover_flag;
1063
d11ba0c4
PT		 1064 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1065 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1066
1067 if (card->dev && netif_carrier_ok(card->dev))
1068 netif_carrier_off(card->dev);
1069 recover_flag = card->state;
0f5623c9 1070 qeth_l2_stop_card(card, recovery_mode);
4a71df50
FB		 1071 rc = ccw_device_set_offline(CARD_DDEV(card));
1072 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1073 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1074 if (!rc)
1075 rc = (rc2) ? rc2 : rc3;
1076 if (rc)
d11ba0c4 1077 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 1078 if (recover_flag == CARD_STATE_UP)
1079 card->state = CARD_STATE_RECOVER;
1080 /* let user_space know that device is offline */
1081 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1082 return 0;
1083}
1084
1085static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1086{
1087 return __qeth_l2_set_offline(cgdev, 0);
1088}
1089
1090static int qeth_l2_recover(void *ptr)
1091{
1092 struct qeth_card *card;
1093 int rc = 0;
1094
1095 card = (struct qeth_card *) ptr;
d11ba0c4
PT		 1096 QETH_DBF_TEXT(TRACE, 2, "recover1");
1097 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
4a71df50
FB		 1098 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1099 return 0;
d11ba0c4 1100 QETH_DBF_TEXT(TRACE, 2, "recover2");
74eacdb9
FB		 1101 dev_warn(&card->gdev->dev,
1102 "A recovery process has been started for the device\n");
4a71df50
FB		 1103 card->use_hard_stop = 1;
1104 __qeth_l2_set_offline(card->gdev, 1);
1105 rc = __qeth_l2_set_online(card->gdev, 1);
1106 /* don't run another scheduled recovery */
1107 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1108 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1109 if (!rc)
74eacdb9
FB		 1110 dev_info(&card->gdev->dev,
1111 "Device successfully recovered!\n");
28a7e4c9 1112 else {
fc9c2460
UB		 1113 if (card->dev) {
1114 rtnl_lock();
1115 dev_close(card->dev);
1116 rtnl_unlock();
1117 }
74eacdb9
FB		 1118 dev_warn(&card->gdev->dev, "The qeth device driver "
1119 "failed to recover an error on the device\n");
28a7e4c9 1120 }
4a71df50
FB		 1121 return 0;
1122}
1123
1124static int __init qeth_l2_init(void)
1125{
74eacdb9 1126 pr_info("register layer 2 discipline\n");
4a71df50
FB		 1127 return 0;
1128}
1129
1130static void __exit qeth_l2_exit(void)
1131{
74eacdb9 1132 pr_info("unregister layer 2 discipline\n");
4a71df50
FB		 1133}
1134
1135static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1136{
1137 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1138 qeth_qdio_clear_card(card, 0);
1139 qeth_clear_qdio_buffers(card);
1140}
1141
1142struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1143 .probe = qeth_l2_probe_device,
1144 .remove = qeth_l2_remove_device,
1145 .set_online = qeth_l2_set_online,
1146 .set_offline = qeth_l2_set_offline,
1147 .shutdown = qeth_l2_shutdown,
1148};
1149EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1150
1151static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1152 struct qeth_cmd_buffer *iob)
1153{
1154 unsigned long flags;
1155 int rc = 0;
1156
d11ba0c4 1157 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
4a71df50
FB		 1158
1159 wait_event(card->wait_q,
1160 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1161 qeth_prepare_control_data(card, len, iob);
d11ba0c4 1162 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
4a71df50
FB		 1163 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1164 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1165 (addr_t) iob, 0, 0);
1166 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1167 if (rc) {
14cc21b6 1168 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
4a71df50 1169 "ccw_device_start rc = %i\n", rc);
d11ba0c4 1170 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
4a71df50
FB		 1171 qeth_release_buffer(iob->channel, iob);
1172 atomic_set(&card->write.irq_pending, 0);
1173 wake_up(&card->wait_q);
1174 }
1175 return rc;
1176}
1177
1178static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1179 struct qeth_cmd_buffer *iob, int data_len)
1180{
1181 u16 s1, s2;
1182
d11ba0c4 1183 QETH_DBF_TEXT(TRACE, 4, "osndipa");
4a71df50
FB		 1184
1185 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1186 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1187 s2 = (u16)data_len;
1188 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1189 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1190 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1191 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1192 return qeth_osn_send_control_data(card, s1, iob);
1193}
1194
1195int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1196{
1197 struct qeth_cmd_buffer *iob;
1198 struct qeth_card *card;
1199 int rc;
1200
d11ba0c4 1201 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
4a71df50
FB		 1202 if (!dev)
1203 return -ENODEV;
509e2562 1204 card = dev->ml_priv;
4a71df50
FB		 1205 if (!card)
1206 return -ENODEV;
1207 if ((card->state != CARD_STATE_UP) &&
1208 (card->state != CARD_STATE_SOFTSETUP))
1209 return -ENODEV;
1210 iob = qeth_wait_for_buffer(&card->write);
1211 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1212 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1213 return rc;
1214}
1215EXPORT_SYMBOL(qeth_osn_assist);
1216
1217int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1218 int (*assist_cb)(struct net_device *, void *),
1219 int (*data_cb)(struct sk_buff *))
1220{
1221 struct qeth_card *card;
1222
d11ba0c4 1223 QETH_DBF_TEXT(TRACE, 2, "osnreg");
4a71df50
FB		 1224 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1225 if (*dev == NULL)
1226 return -ENODEV;
509e2562 1227 card = (*dev)->ml_priv;
4a71df50
FB		 1228 if (!card)
1229 return -ENODEV;
1230 if ((assist_cb == NULL) || (data_cb == NULL))
1231 return -EINVAL;
1232 card->osn_info.assist_cb = assist_cb;
1233 card->osn_info.data_cb = data_cb;
1234 return 0;
1235}
1236EXPORT_SYMBOL(qeth_osn_register);
1237
1238void qeth_osn_deregister(struct net_device *dev)
1239{
1240 struct qeth_card *card;
1241
d11ba0c4 1242 QETH_DBF_TEXT(TRACE, 2, "osndereg");
4a71df50
FB		 1243 if (!dev)
1244 return;
509e2562 1245 card = dev->ml_priv;
4a71df50
FB		 1246 if (!card)
1247 return;
1248 card->osn_info.assist_cb = NULL;
1249 card->osn_info.data_cb = NULL;
1250 return;
1251}
1252EXPORT_SYMBOL(qeth_osn_deregister);
1253
1254module_init(qeth_l2_init);
1255module_exit(qeth_l2_exit);
1256MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1257MODULE_DESCRIPTION("qeth layer 2 discipline");
1258MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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