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net: convert print_mac to %pM
[linux-2.6-block.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
11#include <linux/module.h>
12#include <linux/moduleparam.h>
13#include <linux/string.h>
14#include <linux/errno.h>
15#include <linux/kernel.h>
16#include <linux/etherdevice.h>
17#include <linux/mii.h>
18#include <linux/ip.h>
19
20#include <asm/s390_rdev.h>
21
22#include "qeth_core.h"
23#include "qeth_core_offl.h"
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 */
133 if (cmd->hdr.return_code == 0x2005) {
14cc21b6 134 QETH_DBF_MESSAGE(2, "Group MAC %02x:%02x:%02x:%02x:%02x:%02x "
4a71df50
FB		 135 "already existing on %s \n",
136 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
137 QETH_CARD_IFNAME(card));
138 cmd->hdr.return_code = 0;
139 }
140 if (cmd->hdr.return_code)
14cc21b6 141 QETH_DBF_MESSAGE(2, "Could not set group MAC "
4a71df50
FB		 142 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
143 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
144 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
145 return 0;
146}
147
148static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
149{
d11ba0c4 150 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
4a71df50
FB		 151 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
152 qeth_l2_send_setgroupmac_cb);
153}
154
155static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
156 struct qeth_reply *reply,
157 unsigned long data)
158{
159 struct qeth_ipa_cmd *cmd;
160 __u8 *mac;
161
d11ba0c4 162 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
4a71df50
FB		 163 cmd = (struct qeth_ipa_cmd *) data;
164 mac = &cmd->data.setdelmac.mac[0];
165 if (cmd->hdr.return_code)
14cc21b6 166 QETH_DBF_MESSAGE(2, "Could not delete group MAC "
4a71df50
FB		 167 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
168 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
169 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
170 return 0;
171}
172
173static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
174{
d11ba0c4 175 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
4a71df50
FB		 176 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
177 qeth_l2_send_delgroupmac_cb);
178}
179
7db2266a 180static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
4a71df50
FB		 181{
182 struct qeth_mc_mac *mc;
7db2266a 183 int rc;
4a71df50
FB		 184
185 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
186
14cc21b6 187 if (!mc)
4a71df50 188 return;
4a71df50
FB		 189
190 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
191 mc->mc_addrlen = OSA_ADDR_LEN;
7db2266a
FB		 192 mc->is_vmac = vmac;
193
194 if (vmac) {
195 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
196 NULL);
197 } else {
198 rc = qeth_l2_send_setgroupmac(card, mac);
199 }
4a71df50 200
7db2266a 201 if (!rc)
4a71df50
FB		 202 list_add_tail(&mc->list, &card->mc_list);
203 else
204 kfree(mc);
205}
206
207static void qeth_l2_del_all_mc(struct qeth_card *card)
208{
209 struct qeth_mc_mac *mc, *tmp;
210
211 spin_lock_bh(&card->mclock);
212 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
7db2266a
FB		 213 if (mc->is_vmac)
214 qeth_l2_send_setdelmac(card, mc->mc_addr,
215 IPA_CMD_DELVMAC, NULL);
216 else
217 qeth_l2_send_delgroupmac(card, mc->mc_addr);
4a71df50
FB		 218 list_del(&mc->list);
219 kfree(mc);
220 }
221 spin_unlock_bh(&card->mclock);
222}
223
224static void qeth_l2_get_packet_type(struct qeth_card *card,
225 struct qeth_hdr *hdr, struct sk_buff *skb)
226{
227 __u16 hdr_mac;
228
229 if (!memcmp(skb->data + QETH_HEADER_SIZE,
230 skb->dev->broadcast, 6)) {
231 /* broadcast? */
232 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
233 return;
234 }
235 hdr_mac = *((__u16 *)skb->data);
236 /* tr multicast? */
237 switch (card->info.link_type) {
238 case QETH_LINK_TYPE_HSTR:
239 case QETH_LINK_TYPE_LANE_TR:
240 if ((hdr_mac == QETH_TR_MAC_NC) ||
241 (hdr_mac == QETH_TR_MAC_C))
242 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
243 else
244 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
245 break;
246 /* eth or so multicast? */
247 default:
248 if ((hdr_mac == QETH_ETH_MAC_V4) ||
249 (hdr_mac == QETH_ETH_MAC_V6))
250 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
251 else
252 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
253 }
254}
255
256static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
257 struct sk_buff *skb, int ipv, int cast_type)
258{
683d718a 259 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
4a71df50
FB		 260
261 memset(hdr, 0, sizeof(struct qeth_hdr));
262 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
263
264 /* set byte byte 3 to casting flags */
265 if (cast_type == RTN_MULTICAST)
266 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
267 else if (cast_type == RTN_BROADCAST)
268 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
269 else
270 qeth_l2_get_packet_type(card, hdr, skb);
271
272 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
273 /* VSWITCH relies on the VLAN
274 * information to be present in
275 * the QDIO header */
276 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
277 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
278 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
279 }
280}
281
282static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
283 struct qeth_reply *reply, unsigned long data)
284{
285 struct qeth_ipa_cmd *cmd;
286
d11ba0c4 287 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
4a71df50
FB		 288 cmd = (struct qeth_ipa_cmd *) data;
289 if (cmd->hdr.return_code) {
14cc21b6 290 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
4a71df50
FB		 291 "Continuing\n", cmd->data.setdelvlan.vlan_id,
292 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
d11ba0c4
PT		 293 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
294 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
295 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 296 }
297 return 0;
298}
299
300static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
301 enum qeth_ipa_cmds ipacmd)
302{
303 struct qeth_ipa_cmd *cmd;
304 struct qeth_cmd_buffer *iob;
305
d11ba0c4 306 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
4a71df50
FB		 307 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
308 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
309 cmd->data.setdelvlan.vlan_id = i;
310 return qeth_send_ipa_cmd(card, iob,
311 qeth_l2_send_setdelvlan_cb, NULL);
312}
313
314static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
315{
316 struct qeth_vlan_vid *id;
d11ba0c4 317 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
4a71df50
FB		 318 spin_lock_bh(&card->vlanlock);
319 list_for_each_entry(id, &card->vid_list, list) {
320 if (clear)
321 qeth_l2_send_setdelvlan(card, id->vid,
322 IPA_CMD_DELVLAN);
323 else
324 qeth_l2_send_setdelvlan(card, id->vid,
325 IPA_CMD_SETVLAN);
326 }
327 spin_unlock_bh(&card->vlanlock);
328}
329
330static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
331{
509e2562 332 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 333 struct qeth_vlan_vid *id;
334
d11ba0c4 335 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
4a71df50
FB		 336 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
337 if (id) {
338 id->vid = vid;
339 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
340 spin_lock_bh(&card->vlanlock);
341 list_add_tail(&id->list, &card->vid_list);
342 spin_unlock_bh(&card->vlanlock);
4a71df50
FB		 343 }
344}
345
346static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
347{
348 struct qeth_vlan_vid *id, *tmpid = NULL;
509e2562 349 struct qeth_card *card = dev->ml_priv;
4a71df50 350
d11ba0c4 351 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
4a71df50
FB		 352 spin_lock_bh(&card->vlanlock);
353 list_for_each_entry(id, &card->vid_list, list) {
354 if (id->vid == vid) {
355 list_del(&id->list);
356 tmpid = id;
357 break;
358 }
359 }
360 spin_unlock_bh(&card->vlanlock);
361 if (tmpid) {
362 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
363 kfree(tmpid);
364 }
365 qeth_l2_set_multicast_list(card->dev);
366}
367
368static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
369{
370 int rc = 0;
371
d11ba0c4
PT		 372 QETH_DBF_TEXT(SETUP , 2, "stopcard");
373 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 374
375 qeth_set_allowed_threads(card, 0, 1);
376 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
377 return -ERESTARTSYS;
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 }
389 if (!card->use_hard_stop) {
390 __u8 *mac = &card->dev->dev_addr[0];
391 rc = qeth_l2_send_delmac(card, mac);
d11ba0c4 392 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
4a71df50
FB		 393 }
394 card->state = CARD_STATE_SOFTSETUP;
395 }
396 if (card->state == CARD_STATE_SOFTSETUP) {
397 qeth_l2_process_vlans(card, 1);
28a7e4c9
UB		 398 if (!card->use_hard_stop)
399 qeth_l2_del_all_mc(card);
4a71df50
FB		 400 qeth_clear_ipacmd_list(card);
401 card->state = CARD_STATE_HARDSETUP;
402 }
403 if (card->state == CARD_STATE_HARDSETUP) {
404 qeth_qdio_clear_card(card, 0);
405 qeth_clear_qdio_buffers(card);
406 qeth_clear_working_pool_list(card);
407 card->state = CARD_STATE_DOWN;
408 }
409 if (card->state == CARD_STATE_DOWN) {
410 qeth_clear_cmd_buffers(&card->read);
411 qeth_clear_cmd_buffers(&card->write);
412 }
413 card->use_hard_stop = 0;
414 return rc;
415}
416
417static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
418 struct qeth_qdio_buffer *buf, int index)
419{
420 struct qdio_buffer_element *element;
421 struct sk_buff *skb;
422 struct qeth_hdr *hdr;
423 int offset;
424 unsigned int len;
425
426 /* get first element of current buffer */
427 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
428 offset = 0;
429 if (card->options.performance_stats)
430 card->perf_stats.bufs_rec++;
431 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
432 &offset, &hdr))) {
433 skb->dev = card->dev;
434 /* is device UP ? */
435 if (!(card->dev->flags & IFF_UP)) {
436 dev_kfree_skb_any(skb);
437 continue;
438 }
439
440 switch (hdr->hdr.l2.id) {
441 case QETH_HEADER_TYPE_LAYER2:
442 skb->pkt_type = PACKET_HOST;
443 skb->protocol = eth_type_trans(skb, skb->dev);
444 if (card->options.checksum_type == NO_CHECKSUMMING)
445 skb->ip_summed = CHECKSUM_UNNECESSARY;
446 else
447 skb->ip_summed = CHECKSUM_NONE;
12883725
UB		 448 if (skb->protocol == htons(ETH_P_802_2))
449 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
4a71df50
FB		 450 len = skb->len;
451 netif_rx(skb);
452 break;
453 case QETH_HEADER_TYPE_OSN:
454 skb_push(skb, sizeof(struct qeth_hdr));
455 skb_copy_to_linear_data(skb, hdr,
456 sizeof(struct qeth_hdr));
457 len = skb->len;
458 card->osn_info.data_cb(skb);
459 break;
460 default:
461 dev_kfree_skb_any(skb);
d11ba0c4
PT		 462 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
463 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 464 continue;
465 }
466 card->dev->last_rx = jiffies;
467 card->stats.rx_packets++;
468 card->stats.rx_bytes += len;
469 }
470}
471
472static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
473 enum qeth_ipa_cmds ipacmd,
474 int (*reply_cb) (struct qeth_card *,
475 struct qeth_reply*,
476 unsigned long))
477{
478 struct qeth_ipa_cmd *cmd;
479 struct qeth_cmd_buffer *iob;
480
d11ba0c4 481 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
4a71df50
FB		 482 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
483 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
484 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
485 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
486 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
487}
488
489static int qeth_l2_send_setmac_cb(struct qeth_card *card,
490 struct qeth_reply *reply,
491 unsigned long data)
492{
493 struct qeth_ipa_cmd *cmd;
494
d11ba0c4 495 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
4a71df50
FB		 496 cmd = (struct qeth_ipa_cmd *) data;
497 if (cmd->hdr.return_code) {
d11ba0c4 498 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
4a71df50
FB		 499 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
500 cmd->hdr.return_code = -EIO;
501 } else {
502 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
503 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
504 OSA_ADDR_LEN);
505 PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
506 "successfully registered on device %s\n",
507 card->dev->dev_addr[0], card->dev->dev_addr[1],
508 card->dev->dev_addr[2], card->dev->dev_addr[3],
509 card->dev->dev_addr[4], card->dev->dev_addr[5],
510 card->dev->name);
511 }
512 return 0;
513}
514
515static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
516{
d11ba0c4 517 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
4a71df50
FB		 518 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
519 qeth_l2_send_setmac_cb);
520}
521
522static int qeth_l2_send_delmac_cb(struct qeth_card *card,
523 struct qeth_reply *reply,
524 unsigned long data)
525{
526 struct qeth_ipa_cmd *cmd;
527
d11ba0c4 528 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
4a71df50
FB		 529 cmd = (struct qeth_ipa_cmd *) data;
530 if (cmd->hdr.return_code) {
d11ba0c4 531 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 532 cmd->hdr.return_code = -EIO;
533 return 0;
534 }
535 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
536
537 return 0;
538}
539
540static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
541{
d11ba0c4 542 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
4a71df50
FB		 543 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
544 return 0;
545 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
546 qeth_l2_send_delmac_cb);
547}
548
549static int qeth_l2_request_initial_mac(struct qeth_card *card)
550{
551 int rc = 0;
552 char vendor_pre[] = {0x02, 0x00, 0x00};
553
d11ba0c4
PT		 554 QETH_DBF_TEXT(SETUP, 2, "doL2init");
555 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
4a71df50
FB		 556
557 rc = qeth_query_setadapterparms(card);
558 if (rc) {
14cc21b6
FB		 559 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
560 "device %s: x%x\n", CARD_BUS_ID(card), rc);
4a71df50
FB		 561 }
562
f1d58672
UB		 563 if ((card->info.type == QETH_CARD_TYPE_IQD) ||
564 (card->info.guestlan)) {
4a71df50
FB		 565 rc = qeth_setadpparms_change_macaddr(card);
566 if (rc) {
14cc21b6
FB		 567 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
568 "device %s: x%x\n", CARD_BUS_ID(card), rc);
d11ba0c4 569 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 570 return rc;
571 }
d11ba0c4 572 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
4a71df50
FB		 573 } else {
574 random_ether_addr(card->dev->dev_addr);
575 memcpy(card->dev->dev_addr, vendor_pre, 3);
576 }
577 return 0;
578}
579
580static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
581{
582 struct sockaddr *addr = p;
509e2562 583 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 584 int rc = 0;
585
d11ba0c4 586 QETH_DBF_TEXT(TRACE, 3, "setmac");
4a71df50
FB		 587
588 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
d11ba0c4 589 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
4a71df50
FB		 590 return -EOPNOTSUPP;
591 }
592
593 if (card->info.type == QETH_CARD_TYPE_OSN) {
d11ba0c4 594 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
4a71df50
FB		 595 return -EOPNOTSUPP;
596 }
d11ba0c4
PT		 597 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
598 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
4a71df50
FB		 599 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
600 if (!rc)
601 rc = qeth_l2_send_setmac(card, addr->sa_data);
602 return rc;
603}
604
605static void qeth_l2_set_multicast_list(struct net_device *dev)
606{
509e2562 607 struct qeth_card *card = dev->ml_priv;
7db2266a 608 struct dev_addr_list *dm;
4a71df50
FB		 609
610 if (card->info.type == QETH_CARD_TYPE_OSN)
611 return ;
612
d11ba0c4 613 QETH_DBF_TEXT(TRACE, 3, "setmulti");
4a71df50
FB		 614 qeth_l2_del_all_mc(card);
615 spin_lock_bh(&card->mclock);
616 for (dm = dev->mc_list; dm; dm = dm->next)
7db2266a
FB		 617 qeth_l2_add_mc(card, dm->da_addr, 0);
618
619 for (dm = dev->uc_list; dm; dm = dm->next)
620 qeth_l2_add_mc(card, dm->da_addr, 1);
621
4a71df50
FB		 622 spin_unlock_bh(&card->mclock);
623 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
624 return;
625 qeth_setadp_promisc_mode(card);
626}
627
628static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
629{
630 int rc;
631 struct qeth_hdr *hdr = NULL;
632 int elements = 0;
509e2562 633 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 634 struct sk_buff *new_skb = skb;
635 int ipv = qeth_get_ip_version(skb);
636 int cast_type = qeth_get_cast_type(card, skb);
637 struct qeth_qdio_out_q *queue = card->qdio.out_qs
638 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
639 int tx_bytes = skb->len;
640 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
641 struct qeth_eddp_context *ctx = NULL;
683d718a
FB		 642 int data_offset = -1;
643 int elements_needed = 0;
644 int hd_len = 0;
4a71df50 645
4a71df50
FB		 646 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
647 card->stats.tx_carrier_errors++;
648 goto tx_drop;
649 }
650
651 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
652 (skb->protocol == htons(ETH_P_IPV6)))
653 goto tx_drop;
654
655 if (card->options.performance_stats) {
656 card->perf_stats.outbound_cnt++;
657 card->perf_stats.outbound_start_time = qeth_get_micros();
658 }
659 netif_stop_queue(dev);
660
661 if (skb_is_gso(skb))
662 large_send = QETH_LARGE_SEND_EDDP;
663
664 if (card->info.type == QETH_CARD_TYPE_OSN)
665 hdr = (struct qeth_hdr *)skb->data;
666 else {
683d718a
FB		 667 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
668 (skb_shinfo(skb)->nr_frags == 0)) {
669 new_skb = skb;
670 data_offset = ETH_HLEN;
671 hd_len = ETH_HLEN;
672 hdr = kmem_cache_alloc(qeth_core_header_cache,
673 GFP_ATOMIC);
674 if (!hdr)
675 goto tx_drop;
676 elements_needed++;
677 skb_reset_mac_header(new_skb);
678 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
679 hdr->hdr.l2.pkt_length = new_skb->len;
680 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
681 skb_mac_header(new_skb), ETH_HLEN);
682 } else {
683 /* create a clone with writeable headroom */
684 new_skb = skb_realloc_headroom(skb,
685 sizeof(struct qeth_hdr));
686 if (!new_skb)
687 goto tx_drop;
688 hdr = (struct qeth_hdr *)skb_push(new_skb,
f90b744e 689 sizeof(struct qeth_hdr));
683d718a
FB		 690 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
691 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
692 }
4a71df50
FB		 693 }
694
695 if (large_send == QETH_LARGE_SEND_EDDP) {
696 ctx = qeth_eddp_create_context(card, new_skb, hdr,
697 skb->sk->sk_protocol);
698 if (ctx == NULL) {
14cc21b6 699 QETH_DBF_MESSAGE(2, "could not create eddp context\n");
4a71df50
FB		 700 goto tx_drop;
701 }
702 } else {
683d718a
FB		 703 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
704 elements_needed);
705 if (!elements) {
706 if (data_offset >= 0)
707 kmem_cache_free(qeth_core_header_cache, hdr);
4a71df50 708 goto tx_drop;
683d718a 709 }
4a71df50
FB		 710 }
711
712 if ((large_send == QETH_LARGE_SEND_NO) &&
713 (skb->ip_summed == CHECKSUM_PARTIAL))
714 qeth_tx_csum(new_skb);
715
716 if (card->info.type != QETH_CARD_TYPE_IQD)
717 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
718 elements, ctx);
719 else
720 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
683d718a 721 elements, ctx, data_offset, hd_len);
4a71df50
FB		 722 if (!rc) {
723 card->stats.tx_packets++;
724 card->stats.tx_bytes += tx_bytes;
725 if (new_skb != skb)
726 dev_kfree_skb_any(skb);
727 if (card->options.performance_stats) {
728 if (large_send != QETH_LARGE_SEND_NO) {
729 card->perf_stats.large_send_bytes += tx_bytes;
730 card->perf_stats.large_send_cnt++;
731 }
732 if (skb_shinfo(new_skb)->nr_frags > 0) {
733 card->perf_stats.sg_skbs_sent++;
734 /* nr_frags + skb->data */
735 card->perf_stats.sg_frags_sent +=
736 skb_shinfo(new_skb)->nr_frags + 1;
737 }
738 }
739
740 if (ctx != NULL) {
741 qeth_eddp_put_context(ctx);
742 dev_kfree_skb_any(new_skb);
743 }
744 } else {
745 if (ctx != NULL)
746 qeth_eddp_put_context(ctx);
747
683d718a
FB		 748 if (data_offset >= 0)
749 kmem_cache_free(qeth_core_header_cache, hdr);
750
4a71df50
FB		 751 if (rc == -EBUSY) {
752 if (new_skb != skb)
753 dev_kfree_skb_any(new_skb);
754 return NETDEV_TX_BUSY;
755 } else
756 goto tx_drop;
757 }
758
759 netif_wake_queue(dev);
760 if (card->options.performance_stats)
761 card->perf_stats.outbound_time += qeth_get_micros() -
762 card->perf_stats.outbound_start_time;
763 return rc;
764
765tx_drop:
766 card->stats.tx_dropped++;
767 card->stats.tx_errors++;
768 if ((new_skb != skb) && new_skb)
769 dev_kfree_skb_any(new_skb);
770 dev_kfree_skb_any(skb);
d0ec0f54 771 netif_wake_queue(dev);
4a71df50
FB		 772 return NETDEV_TX_OK;
773}
774
775static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
779e6e1c 776 unsigned int qdio_err, unsigned int queue,
4a71df50
FB		 777 int first_element, int count, unsigned long card_ptr)
778{
779 struct net_device *net_dev;
780 struct qeth_card *card;
781 struct qeth_qdio_buffer *buffer;
782 int index;
783 int i;
784
4a71df50
FB		 785 card = (struct qeth_card *) card_ptr;
786 net_dev = card->dev;
787 if (card->options.performance_stats) {
788 card->perf_stats.inbound_cnt++;
789 card->perf_stats.inbound_start_time = qeth_get_micros();
790 }
779e6e1c
JG		 791 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
792 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
793 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
794 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
795 count);
796 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
797 qeth_schedule_recovery(card);
798 return;
4a71df50
FB		 799 }
800 for (i = first_element; i < (first_element + count); ++i) {
801 index = i % QDIO_MAX_BUFFERS_PER_Q;
802 buffer = &card->qdio.in_q->bufs[index];
779e6e1c
JG		 803 if (!(qdio_err &&
804 qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr")))
4a71df50
FB		 805 qeth_l2_process_inbound_buffer(card, buffer, index);
806 /* clear buffer and give back to hardware */
807 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
808 qeth_queue_input_buffer(card, index);
809 }
810 if (card->options.performance_stats)
811 card->perf_stats.inbound_time += qeth_get_micros() -
812 card->perf_stats.inbound_start_time;
813}
814
815static int qeth_l2_open(struct net_device *dev)
816{
509e2562 817 struct qeth_card *card = dev->ml_priv;
4a71df50 818
d11ba0c4 819 QETH_DBF_TEXT(TRACE, 4, "qethopen");
4a71df50
FB		 820 if (card->state != CARD_STATE_SOFTSETUP)
821 return -ENODEV;
822
823 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
824 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
d11ba0c4 825 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
4a71df50
FB		 826 return -EPERM;
827 }
828 card->data.state = CH_STATE_UP;
829 card->state = CARD_STATE_UP;
4a71df50
FB		 830 netif_start_queue(dev);
831
832 if (!card->lan_online && netif_carrier_ok(dev))
833 netif_carrier_off(dev);
834 return 0;
835}
836
837
838static int qeth_l2_stop(struct net_device *dev)
839{
509e2562 840 struct qeth_card *card = dev->ml_priv;
4a71df50 841
d11ba0c4 842 QETH_DBF_TEXT(TRACE, 4, "qethstop");
4a71df50 843 netif_tx_disable(dev);
4a71df50
FB		 844 if (card->state == CARD_STATE_UP)
845 card->state = CARD_STATE_SOFTSETUP;
846 return 0;
847}
848
849static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
850{
851 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
852
853 INIT_LIST_HEAD(&card->vid_list);
854 INIT_LIST_HEAD(&card->mc_list);
855 card->options.layer2 = 1;
856 card->discipline.input_handler = (qdio_handler_t *)
857 qeth_l2_qdio_input_handler;
858 card->discipline.output_handler = (qdio_handler_t *)
859 qeth_qdio_output_handler;
860 card->discipline.recover = qeth_l2_recover;
861 return 0;
862}
863
864static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
865{
866 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
867
868 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
869
870 if (cgdev->state == CCWGROUP_ONLINE) {
871 card->use_hard_stop = 1;
872 qeth_l2_set_offline(cgdev);
873 }
874
875 if (card->dev) {
876 unregister_netdev(card->dev);
877 card->dev = NULL;
878 }
879
880 qeth_l2_del_all_mc(card);
881 return;
882}
883
efe3df6f
FB		 884static int qeth_l2_ethtool_set_tso(struct net_device *dev, u32 data)
885{
509e2562 886 struct qeth_card *card = dev->ml_priv;
efe3df6f
FB		 887
888 if (data) {
889 if (card->options.large_send == QETH_LARGE_SEND_NO) {
890 card->options.large_send = QETH_LARGE_SEND_EDDP;
891 dev->features |= NETIF_F_TSO;
892 }
893 } else {
894 dev->features &= ~NETIF_F_TSO;
895 card->options.large_send = QETH_LARGE_SEND_NO;
896 }
897 return 0;
898}
899
4a71df50
FB		 900static struct ethtool_ops qeth_l2_ethtool_ops = {
901 .get_link = ethtool_op_get_link,
902 .get_tx_csum = ethtool_op_get_tx_csum,
903 .set_tx_csum = ethtool_op_set_tx_hw_csum,
904 .get_sg = ethtool_op_get_sg,
905 .set_sg = ethtool_op_set_sg,
906 .get_tso = ethtool_op_get_tso,
efe3df6f 907 .set_tso = qeth_l2_ethtool_set_tso,
4a71df50
FB		 908 .get_strings = qeth_core_get_strings,
909 .get_ethtool_stats = qeth_core_get_ethtool_stats,
910 .get_stats_count = qeth_core_get_stats_count,
911 .get_drvinfo = qeth_core_get_drvinfo,
3f9975aa 912 .get_settings = qeth_core_ethtool_get_settings,
4a71df50
FB		 913};
914
915static struct ethtool_ops qeth_l2_osn_ops = {
916 .get_strings = qeth_core_get_strings,
917 .get_ethtool_stats = qeth_core_get_ethtool_stats,
918 .get_stats_count = qeth_core_get_stats_count,
919 .get_drvinfo = qeth_core_get_drvinfo,
920};
921
922static int qeth_l2_setup_netdev(struct qeth_card *card)
923{
924 switch (card->info.type) {
925 case QETH_CARD_TYPE_OSAE:
926 card->dev = alloc_etherdev(0);
927 break;
928 case QETH_CARD_TYPE_IQD:
929 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
930 break;
931 case QETH_CARD_TYPE_OSN:
932 card->dev = alloc_netdev(0, "osn%d", ether_setup);
933 card->dev->flags |= IFF_NOARP;
934 break;
935 default:
936 card->dev = alloc_etherdev(0);
937 }
938
939 if (!card->dev)
940 return -ENODEV;
941
509e2562 942 card->dev->ml_priv = card;
4a71df50
FB		 943 card->dev->tx_timeout = &qeth_tx_timeout;
944 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
945 card->dev->open = qeth_l2_open;
946 card->dev->stop = qeth_l2_stop;
947 card->dev->hard_start_xmit = qeth_l2_hard_start_xmit;
948 card->dev->do_ioctl = qeth_l2_do_ioctl;
949 card->dev->get_stats = qeth_get_stats;
950 card->dev->change_mtu = qeth_change_mtu;
951 card->dev->set_multicast_list = qeth_l2_set_multicast_list;
952 card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid;
953 card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid;
954 card->dev->set_mac_address = qeth_l2_set_mac_address;
955 card->dev->mtu = card->info.initial_mtu;
956 if (card->info.type != QETH_CARD_TYPE_OSN)
957 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
958 else
959 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
960 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
961 card->info.broadcast_capable = 1;
962 qeth_l2_request_initial_mac(card);
963 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
964 return register_netdev(card->dev);
965}
966
967static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
968{
969 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
970 int rc = 0;
971 enum qeth_card_states recover_flag;
972
973 BUG_ON(!card);
d11ba0c4
PT		 974 QETH_DBF_TEXT(SETUP, 2, "setonlin");
975 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 976
977 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
978 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) {
979 PRINT_WARN("set_online of card %s interrupted by user!\n",
980 CARD_BUS_ID(card));
981 return -ERESTARTSYS;
982 }
983
984 recover_flag = card->state;
985 rc = ccw_device_set_online(CARD_RDEV(card));
986 if (rc) {
d11ba0c4 987 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 988 return -EIO;
989 }
990 rc = ccw_device_set_online(CARD_WDEV(card));
991 if (rc) {
d11ba0c4 992 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 993 return -EIO;
994 }
995 rc = ccw_device_set_online(CARD_DDEV(card));
996 if (rc) {
d11ba0c4 997 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 998 return -EIO;
999 }
1000
1001 rc = qeth_core_hardsetup_card(card);
1002 if (rc) {
d11ba0c4 1003 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4a71df50
FB		 1004 goto out_remove;
1005 }
1006
1007 if (!card->dev && qeth_l2_setup_netdev(card))
1008 goto out_remove;
1009
1010 if (card->info.type != QETH_CARD_TYPE_OSN)
1011 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1012
1013 card->state = CARD_STATE_HARDSETUP;
1014 qeth_print_status_message(card);
1015
1016 /* softsetup */
d11ba0c4 1017 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50
FB		 1018
1019 rc = qeth_send_startlan(card);
1020 if (rc) {
d11ba0c4 1021 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 1022 if (rc == 0xe080) {
1023 PRINT_WARN("LAN on card %s if offline! "
1024 "Waiting for STARTLAN from card.\n",
1025 CARD_BUS_ID(card));
1026 card->lan_online = 0;
1027 }
1028 return rc;
1029 } else
1030 card->lan_online = 1;
1031
1032 if (card->info.type != QETH_CARD_TYPE_OSN) {
1033 qeth_set_large_send(card, card->options.large_send);
1034 qeth_l2_process_vlans(card, 0);
1035 }
1036
1037 netif_tx_disable(card->dev);
1038
1039 rc = qeth_init_qdio_queues(card);
1040 if (rc) {
d11ba0c4 1041 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4a71df50
FB		 1042 goto out_remove;
1043 }
1044 card->state = CARD_STATE_SOFTSETUP;
1045 netif_carrier_on(card->dev);
1046
1047 qeth_set_allowed_threads(card, 0xffffffff, 0);
1048 if (recover_flag == CARD_STATE_RECOVER) {
1049 if (recovery_mode &&
1050 card->info.type != QETH_CARD_TYPE_OSN) {
1051 qeth_l2_open(card->dev);
1052 } else {
1053 rtnl_lock();
1054 dev_open(card->dev);
1055 rtnl_unlock();
1056 }
1057 /* this also sets saved unicast addresses */
1058 qeth_l2_set_multicast_list(card->dev);
1059 }
1060 /* let user_space know that device is online */
1061 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1062 return 0;
1063out_remove:
1064 card->use_hard_stop = 1;
1065 qeth_l2_stop_card(card, 0);
1066 ccw_device_set_offline(CARD_DDEV(card));
1067 ccw_device_set_offline(CARD_WDEV(card));
1068 ccw_device_set_offline(CARD_RDEV(card));
1069 if (recover_flag == CARD_STATE_RECOVER)
1070 card->state = CARD_STATE_RECOVER;
1071 else
1072 card->state = CARD_STATE_DOWN;
1073 return -ENODEV;
1074}
1075
1076static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1077{
1078 return __qeth_l2_set_online(gdev, 0);
1079}
1080
1081static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1082 int recovery_mode)
1083{
1084 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1085 int rc = 0, rc2 = 0, rc3 = 0;
1086 enum qeth_card_states recover_flag;
1087
d11ba0c4
PT		 1088 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1089 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1090
1091 if (card->dev && netif_carrier_ok(card->dev))
1092 netif_carrier_off(card->dev);
1093 recover_flag = card->state;
1094 if (qeth_l2_stop_card(card, recovery_mode) == -ERESTARTSYS) {
1095 PRINT_WARN("Stopping card %s interrupted by user!\n",
1096 CARD_BUS_ID(card));
1097 return -ERESTARTSYS;
1098 }
1099 rc = ccw_device_set_offline(CARD_DDEV(card));
1100 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1101 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1102 if (!rc)
1103 rc = (rc2) ? rc2 : rc3;
1104 if (rc)
d11ba0c4 1105 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50
FB		 1106 if (recover_flag == CARD_STATE_UP)
1107 card->state = CARD_STATE_RECOVER;
1108 /* let user_space know that device is offline */
1109 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1110 return 0;
1111}
1112
1113static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1114{
1115 return __qeth_l2_set_offline(cgdev, 0);
1116}
1117
1118static int qeth_l2_recover(void *ptr)
1119{
1120 struct qeth_card *card;
1121 int rc = 0;
1122
1123 card = (struct qeth_card *) ptr;
d11ba0c4
PT		 1124 QETH_DBF_TEXT(TRACE, 2, "recover1");
1125 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
4a71df50
FB		 1126 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1127 return 0;
d11ba0c4 1128 QETH_DBF_TEXT(TRACE, 2, "recover2");
4a71df50
FB		 1129 PRINT_WARN("Recovery of device %s started ...\n",
1130 CARD_BUS_ID(card));
1131 card->use_hard_stop = 1;
1132 __qeth_l2_set_offline(card->gdev, 1);
1133 rc = __qeth_l2_set_online(card->gdev, 1);
1134 /* don't run another scheduled recovery */
1135 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1136 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1137 if (!rc)
1138 PRINT_INFO("Device %s successfully recovered!\n",
1139 CARD_BUS_ID(card));
28a7e4c9
UB		 1140 else {
1141 rtnl_lock();
1142 dev_close(card->dev);
1143 rtnl_unlock();
4a71df50
FB		 1144 PRINT_INFO("Device %s could not be recovered!\n",
1145 CARD_BUS_ID(card));
28a7e4c9 1146 }
4a71df50
FB		 1147 return 0;
1148}
1149
1150static int __init qeth_l2_init(void)
1151{
1152 PRINT_INFO("register layer 2 discipline\n");
1153 return 0;
1154}
1155
1156static void __exit qeth_l2_exit(void)
1157{
1158 PRINT_INFO("unregister layer 2 discipline\n");
1159}
1160
1161static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1162{
1163 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1164 qeth_qdio_clear_card(card, 0);
1165 qeth_clear_qdio_buffers(card);
1166}
1167
1168struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1169 .probe = qeth_l2_probe_device,
1170 .remove = qeth_l2_remove_device,
1171 .set_online = qeth_l2_set_online,
1172 .set_offline = qeth_l2_set_offline,
1173 .shutdown = qeth_l2_shutdown,
1174};
1175EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1176
1177static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1178 struct qeth_cmd_buffer *iob)
1179{
1180 unsigned long flags;
1181 int rc = 0;
1182
d11ba0c4 1183 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
4a71df50
FB		 1184
1185 wait_event(card->wait_q,
1186 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1187 qeth_prepare_control_data(card, len, iob);
d11ba0c4 1188 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
4a71df50
FB		 1189 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1190 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1191 (addr_t) iob, 0, 0);
1192 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1193 if (rc) {
14cc21b6 1194 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
4a71df50 1195 "ccw_device_start rc = %i\n", rc);
d11ba0c4 1196 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
4a71df50
FB		 1197 qeth_release_buffer(iob->channel, iob);
1198 atomic_set(&card->write.irq_pending, 0);
1199 wake_up(&card->wait_q);
1200 }
1201 return rc;
1202}
1203
1204static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1205 struct qeth_cmd_buffer *iob, int data_len)
1206{
1207 u16 s1, s2;
1208
d11ba0c4 1209 QETH_DBF_TEXT(TRACE, 4, "osndipa");
4a71df50
FB		 1210
1211 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1212 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1213 s2 = (u16)data_len;
1214 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1215 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1216 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1217 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1218 return qeth_osn_send_control_data(card, s1, iob);
1219}
1220
1221int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1222{
1223 struct qeth_cmd_buffer *iob;
1224 struct qeth_card *card;
1225 int rc;
1226
d11ba0c4 1227 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
4a71df50
FB		 1228 if (!dev)
1229 return -ENODEV;
509e2562 1230 card = dev->ml_priv;
4a71df50
FB		 1231 if (!card)
1232 return -ENODEV;
1233 if ((card->state != CARD_STATE_UP) &&
1234 (card->state != CARD_STATE_SOFTSETUP))
1235 return -ENODEV;
1236 iob = qeth_wait_for_buffer(&card->write);
1237 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1238 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1239 return rc;
1240}
1241EXPORT_SYMBOL(qeth_osn_assist);
1242
1243int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1244 int (*assist_cb)(struct net_device *, void *),
1245 int (*data_cb)(struct sk_buff *))
1246{
1247 struct qeth_card *card;
1248
d11ba0c4 1249 QETH_DBF_TEXT(TRACE, 2, "osnreg");
4a71df50
FB		 1250 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1251 if (*dev == NULL)
1252 return -ENODEV;
509e2562 1253 card = (*dev)->ml_priv;
4a71df50
FB		 1254 if (!card)
1255 return -ENODEV;
1256 if ((assist_cb == NULL) || (data_cb == NULL))
1257 return -EINVAL;
1258 card->osn_info.assist_cb = assist_cb;
1259 card->osn_info.data_cb = data_cb;
1260 return 0;
1261}
1262EXPORT_SYMBOL(qeth_osn_register);
1263
1264void qeth_osn_deregister(struct net_device *dev)
1265{
1266 struct qeth_card *card;
1267
d11ba0c4 1268 QETH_DBF_TEXT(TRACE, 2, "osndereg");
4a71df50
FB		 1269 if (!dev)
1270 return;
509e2562 1271 card = dev->ml_priv;
4a71df50
FB		 1272 if (!card)
1273 return;
1274 card->osn_info.assist_cb = NULL;
1275 card->osn_info.data_cb = NULL;
1276 return;
1277}
1278EXPORT_SYMBOL(qeth_osn_deregister);
1279
1280module_init(qeth_l2_init);
1281module_exit(qeth_l2_exit);
1282MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1283MODULE_DESCRIPTION("qeth layer 2 discipline");
1284MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)