1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/slab.h>
18 #include <linux/etherdevice.h>
19 #include <linux/mii.h>
20 #include <linux/ip.h>
21 #include <linux/list.h>
22
23 #include "qeth_core.h"
24 #include "qeth_l2.h"
25
26 static int qeth_l2_set_offline(struct ccwgroup_device *);
27 static int qeth_l2_stop(struct net_device *);
28 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
29 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
30 enum qeth_ipa_cmds,
31 int (*reply_cb) (struct qeth_card *,
32 struct qeth_reply*,
33 unsigned long));
34 static void qeth_l2_set_multicast_list(struct net_device *);
35 static int qeth_l2_recover(void *);
36 static void qeth_bridgeport_query_support(struct qeth_card *card);
37 static void qeth_bridge_state_change(struct qeth_card *card,
38 struct qeth_ipa_cmd *cmd);
39 static void qeth_bridge_host_event(struct qeth_card *card,
40 struct qeth_ipa_cmd *cmd);
41
qeth_l2_do_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)42 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
43 {
44 struct qeth_card *card = dev->ml_priv;
45 struct mii_ioctl_data *mii_data;
46 int rc = 0;
47
48 if (!card)
49 return -ENODEV;
50
51 if ((card->state != CARD_STATE_UP) &&
52 (card->state != CARD_STATE_SOFTSETUP))
53 return -ENODEV;
54
55 if (card->info.type == QETH_CARD_TYPE_OSN)
56 return -EPERM;
57
58 switch (cmd) {
59 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
60 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
61 break;
62 case SIOC_QETH_GET_CARD_TYPE:
63 if ((card->info.type == QETH_CARD_TYPE_OSD ||
64 card->info.type == QETH_CARD_TYPE_OSM ||
65 card->info.type == QETH_CARD_TYPE_OSX) &&
66 !card->info.guestlan)
67 return 1;
68 return 0;
69 break;
70 case SIOCGMIIPHY:
71 mii_data = if_mii(rq);
72 mii_data->phy_id = 0;
73 break;
74 case SIOCGMIIREG:
75 mii_data = if_mii(rq);
76 if (mii_data->phy_id != 0)
77 rc = -EINVAL;
78 else
79 mii_data->val_out = qeth_mdio_read(dev,
80 mii_data->phy_id, mii_data->reg_num);
81 break;
82 case SIOC_QETH_QUERY_OAT:
83 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
84 break;
85 default:
86 rc = -EOPNOTSUPP;
87 }
88 if (rc)
89 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
90 return rc;
91 }
92
qeth_l2_verify_dev(struct net_device * dev)93 static int qeth_l2_verify_dev(struct net_device *dev)
94 {
95 struct qeth_card *card;
96 unsigned long flags;
97 int rc = 0;
98
99 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
100 list_for_each_entry(card, &qeth_core_card_list.list, list) {
101 if (card->dev == dev) {
102 rc = QETH_REAL_CARD;
103 break;
104 }
105 }
106 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
107
108 return rc;
109 }
110
qeth_l2_netdev_by_devno(unsigned char * read_dev_no)111 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
112 {
113 struct qeth_card *card;
114 struct net_device *ndev;
115 __u16 temp_dev_no;
116 unsigned long flags;
117 struct ccw_dev_id read_devid;
118
119 ndev = NULL;
120 memcpy(&temp_dev_no, read_dev_no, 2);
121 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
122 list_for_each_entry(card, &qeth_core_card_list.list, list) {
123 ccw_device_get_id(CARD_RDEV(card), &read_devid);
124 if (read_devid.devno == temp_dev_no) {
125 ndev = card->dev;
126 break;
127 }
128 }
129 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
130 return ndev;
131 }
132
qeth_l2_send_setgroupmac_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)133 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
134 struct qeth_reply *reply,
135 unsigned long data)
136 {
137 struct qeth_ipa_cmd *cmd;
138 __u8 *mac;
139
140 QETH_CARD_TEXT(card, 2, "L2Sgmacb");
141 cmd = (struct qeth_ipa_cmd *) data;
142 mac = &cmd->data.setdelmac.mac[0];
143 /* MAC already registered, needed in couple/uncouple case */
144 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
145 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
146 mac, QETH_CARD_IFNAME(card));
147 cmd->hdr.return_code = 0;
148 }
149 if (cmd->hdr.return_code)
150 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
151 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
152 return 0;
153 }
154
qeth_l2_send_setgroupmac(struct qeth_card * card,__u8 * mac)155 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
156 {
157 QETH_CARD_TEXT(card, 2, "L2Sgmac");
158 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
159 qeth_l2_send_setgroupmac_cb);
160 }
161
qeth_l2_send_delgroupmac_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)162 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
163 struct qeth_reply *reply,
164 unsigned long data)
165 {
166 struct qeth_ipa_cmd *cmd;
167 __u8 *mac;
168
169 QETH_CARD_TEXT(card, 2, "L2Dgmacb");
170 cmd = (struct qeth_ipa_cmd *) data;
171 mac = &cmd->data.setdelmac.mac[0];
172 if (cmd->hdr.return_code)
173 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
174 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
175 return 0;
176 }
177
qeth_l2_send_delgroupmac(struct qeth_card * card,__u8 * mac)178 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
179 {
180 QETH_CARD_TEXT(card, 2, "L2Dgmac");
181 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
182 qeth_l2_send_delgroupmac_cb);
183 }
184
qeth_l2_add_mc(struct qeth_card * card,__u8 * mac,int vmac)185 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
186 {
187 struct qeth_mc_mac *mc;
188 int rc;
189
190 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
191
192 if (!mc)
193 return;
194
195 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
196 mc->mc_addrlen = OSA_ADDR_LEN;
197 mc->is_vmac = vmac;
198
199 if (vmac) {
200 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
201 NULL);
202 } else {
203 rc = qeth_l2_send_setgroupmac(card, mac);
204 }
205
206 if (!rc)
207 list_add_tail(&mc->list, &card->mc_list);
208 else
209 kfree(mc);
210 }
211
qeth_l2_del_all_mc(struct qeth_card * card,int del)212 static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
213 {
214 struct qeth_mc_mac *mc, *tmp;
215
216 spin_lock_bh(&card->mclock);
217 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
218 if (del) {
219 if (mc->is_vmac)
220 qeth_l2_send_setdelmac(card, mc->mc_addr,
221 IPA_CMD_DELVMAC, NULL);
222 else
223 qeth_l2_send_delgroupmac(card, mc->mc_addr);
224 }
225 list_del(&mc->list);
226 kfree(mc);
227 }
228 spin_unlock_bh(&card->mclock);
229 }
230
qeth_l2_get_cast_type(struct qeth_card * card,struct sk_buff * skb)231 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
232 struct sk_buff *skb)
233 {
234 if (card->info.type == QETH_CARD_TYPE_OSN)
235 return RTN_UNSPEC;
236 if (is_broadcast_ether_addr(skb->data))
237 return RTN_BROADCAST;
238 if (is_multicast_ether_addr(skb->data))
239 return RTN_MULTICAST;
240 return RTN_UNSPEC;
241 }
242
qeth_l2_fill_header(struct qeth_card * card,struct qeth_hdr * hdr,struct sk_buff * skb,int cast_type)243 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
244 struct sk_buff *skb, int cast_type)
245 {
246 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
247
248 memset(hdr, 0, sizeof(struct qeth_hdr));
249 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
250
251 /* set byte byte 3 to casting flags */
252 if (cast_type == RTN_MULTICAST)
253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
254 else if (cast_type == RTN_BROADCAST)
255 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
256 else
257 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
258
259 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
260 /* VSWITCH relies on the VLAN
261 * information to be present in
262 * the QDIO header */
263 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
264 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
265 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
266 }
267 }
268
qeth_l2_send_setdelvlan_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)269 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
270 struct qeth_reply *reply, unsigned long data)
271 {
272 struct qeth_ipa_cmd *cmd;
273
274 QETH_CARD_TEXT(card, 2, "L2sdvcb");
275 cmd = (struct qeth_ipa_cmd *) data;
276 if (cmd->hdr.return_code) {
277 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
278 "Continuing\n", cmd->data.setdelvlan.vlan_id,
279 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
280 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
281 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
282 }
283 return 0;
284 }
285
qeth_l2_send_setdelvlan(struct qeth_card * card,__u16 i,enum qeth_ipa_cmds ipacmd)286 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
287 enum qeth_ipa_cmds ipacmd)
288 {
289 struct qeth_ipa_cmd *cmd;
290 struct qeth_cmd_buffer *iob;
291
292 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
293 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
294 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
295 cmd->data.setdelvlan.vlan_id = i;
296 return qeth_send_ipa_cmd(card, iob,
297 qeth_l2_send_setdelvlan_cb, NULL);
298 }
299
qeth_l2_process_vlans(struct qeth_card * card)300 static void qeth_l2_process_vlans(struct qeth_card *card)
301 {
302 struct qeth_vlan_vid *id;
303 QETH_CARD_TEXT(card, 3, "L2prcvln");
304 spin_lock_bh(&card->vlanlock);
305 list_for_each_entry(id, &card->vid_list, list) {
306 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
307 }
308 spin_unlock_bh(&card->vlanlock);
309 }
310
qeth_l2_vlan_rx_add_vid(struct net_device * dev,__be16 proto,u16 vid)311 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
312 __be16 proto, u16 vid)
313 {
314 struct qeth_card *card = dev->ml_priv;
315 struct qeth_vlan_vid *id;
316
317 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
318 if (!vid)
319 return 0;
320 if (card->info.type == QETH_CARD_TYPE_OSM) {
321 QETH_CARD_TEXT(card, 3, "aidOSM");
322 return 0;
323 }
324 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
325 QETH_CARD_TEXT(card, 3, "aidREC");
326 return 0;
327 }
328 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
329 if (id) {
330 id->vid = vid;
331 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
332 spin_lock_bh(&card->vlanlock);
333 list_add_tail(&id->list, &card->vid_list);
334 spin_unlock_bh(&card->vlanlock);
335 } else {
336 return -ENOMEM;
337 }
338 return 0;
339 }
340
qeth_l2_vlan_rx_kill_vid(struct net_device * dev,__be16 proto,u16 vid)341 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
342 __be16 proto, u16 vid)
343 {
344 struct qeth_vlan_vid *id, *tmpid = NULL;
345 struct qeth_card *card = dev->ml_priv;
346
347 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
348 if (card->info.type == QETH_CARD_TYPE_OSM) {
349 QETH_CARD_TEXT(card, 3, "kidOSM");
350 return 0;
351 }
352 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
353 QETH_CARD_TEXT(card, 3, "kidREC");
354 return 0;
355 }
356 spin_lock_bh(&card->vlanlock);
357 list_for_each_entry(id, &card->vid_list, list) {
358 if (id->vid == vid) {
359 list_del(&id->list);
360 tmpid = id;
361 break;
362 }
363 }
364 spin_unlock_bh(&card->vlanlock);
365 if (tmpid) {
366 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
367 kfree(tmpid);
368 }
369 qeth_l2_set_multicast_list(card->dev);
370 return 0;
371 }
372
qeth_l2_stop_card(struct qeth_card * card,int recovery_mode)373 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
374 {
375 int rc = 0;
376
377 QETH_DBF_TEXT(SETUP , 2, "stopcard");
378 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
379
380 qeth_set_allowed_threads(card, 0, 1);
381 if (card->read.state == CH_STATE_UP &&
382 card->write.state == CH_STATE_UP &&
383 (card->state == CARD_STATE_UP)) {
384 if (recovery_mode &&
385 card->info.type != QETH_CARD_TYPE_OSN) {
386 qeth_l2_stop(card->dev);
387 } else {
388 rtnl_lock();
389 dev_close(card->dev);
390 rtnl_unlock();
391 }
392 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
393 card->state = CARD_STATE_SOFTSETUP;
394 }
395 if (card->state == CARD_STATE_SOFTSETUP) {
396 qeth_l2_del_all_mc(card, 0);
397 qeth_clear_ipacmd_list(card);
398 card->state = CARD_STATE_HARDSETUP;
399 }
400 if (card->state == CARD_STATE_HARDSETUP) {
401 qeth_qdio_clear_card(card, 0);
402 qeth_clear_qdio_buffers(card);
403 qeth_clear_working_pool_list(card);
404 card->state = CARD_STATE_DOWN;
405 }
406 if (card->state == CARD_STATE_DOWN) {
407 qeth_clear_cmd_buffers(&card->read);
408 qeth_clear_cmd_buffers(&card->write);
409 }
410 return rc;
411 }
412
qeth_l2_process_inbound_buffer(struct qeth_card * card,int budget,int * done)413 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
414 int budget, int *done)
415 {
416 int work_done = 0;
417 struct sk_buff *skb;
418 struct qeth_hdr *hdr;
419 unsigned int len;
420
421 *done = 0;
422 WARN_ON_ONCE(!budget);
423 while (budget) {
424 skb = qeth_core_get_next_skb(card,
425 &card->qdio.in_q->bufs[card->rx.b_index],
426 &card->rx.b_element, &card->rx.e_offset, &hdr);
427 if (!skb) {
428 *done = 1;
429 break;
430 }
431 skb->dev = card->dev;
432 switch (hdr->hdr.l2.id) {
433 case QETH_HEADER_TYPE_LAYER2:
434 skb->pkt_type = PACKET_HOST;
435 skb->protocol = eth_type_trans(skb, skb->dev);
436 skb->ip_summed = CHECKSUM_NONE;
437 if (skb->protocol == htons(ETH_P_802_2))
438 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
439 len = skb->len;
440 netif_receive_skb(skb);
441 break;
442 case QETH_HEADER_TYPE_OSN:
443 if (card->info.type == QETH_CARD_TYPE_OSN) {
444 skb_push(skb, sizeof(struct qeth_hdr));
445 skb_copy_to_linear_data(skb, hdr,
446 sizeof(struct qeth_hdr));
447 len = skb->len;
448 card->osn_info.data_cb(skb);
449 break;
450 }
451 /* else unknown */
452 default:
453 dev_kfree_skb_any(skb);
454 QETH_CARD_TEXT(card, 3, "inbunkno");
455 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
456 continue;
457 }
458 work_done++;
459 budget--;
460 card->stats.rx_packets++;
461 card->stats.rx_bytes += len;
462 }
463 return work_done;
464 }
465
qeth_l2_poll(struct napi_struct * napi,int budget)466 static int qeth_l2_poll(struct napi_struct *napi, int budget)
467 {
468 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
469 int work_done = 0;
470 struct qeth_qdio_buffer *buffer;
471 int done;
472 int new_budget = budget;
473
474 if (card->options.performance_stats) {
475 card->perf_stats.inbound_cnt++;
476 card->perf_stats.inbound_start_time = qeth_get_micros();
477 }
478
479 while (1) {
480 if (!card->rx.b_count) {
481 card->rx.qdio_err = 0;
482 card->rx.b_count = qdio_get_next_buffers(
483 card->data.ccwdev, 0, &card->rx.b_index,
484 &card->rx.qdio_err);
485 if (card->rx.b_count <= 0) {
486 card->rx.b_count = 0;
487 break;
488 }
489 card->rx.b_element =
490 &card->qdio.in_q->bufs[card->rx.b_index]
491 .buffer->element[0];
492 card->rx.e_offset = 0;
493 }
494
495 while (card->rx.b_count) {
496 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
497 if (!(card->rx.qdio_err &&
498 qeth_check_qdio_errors(card, buffer->buffer,
499 card->rx.qdio_err, "qinerr")))
500 work_done += qeth_l2_process_inbound_buffer(
501 card, new_budget, &done);
502 else
503 done = 1;
504
505 if (done) {
506 if (card->options.performance_stats)
507 card->perf_stats.bufs_rec++;
508 qeth_put_buffer_pool_entry(card,
509 buffer->pool_entry);
510 qeth_queue_input_buffer(card, card->rx.b_index);
511 card->rx.b_count--;
512 if (card->rx.b_count) {
513 card->rx.b_index =
514 (card->rx.b_index + 1) %
515 QDIO_MAX_BUFFERS_PER_Q;
516 card->rx.b_element =
517 &card->qdio.in_q
518 ->bufs[card->rx.b_index]
519 .buffer->element[0];
520 card->rx.e_offset = 0;
521 }
522 }
523
524 if (work_done >= budget)
525 goto out;
526 else
527 new_budget = budget - work_done;
528 }
529 }
530
531 napi_complete(napi);
532 if (qdio_start_irq(card->data.ccwdev, 0))
533 napi_schedule(&card->napi);
534 out:
535 if (card->options.performance_stats)
536 card->perf_stats.inbound_time += qeth_get_micros() -
537 card->perf_stats.inbound_start_time;
538 return work_done;
539 }
540
qeth_l2_send_setdelmac(struct qeth_card * card,__u8 * mac,enum qeth_ipa_cmds ipacmd,int (* reply_cb)(struct qeth_card *,struct qeth_reply *,unsigned long))541 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
542 enum qeth_ipa_cmds ipacmd,
543 int (*reply_cb) (struct qeth_card *,
544 struct qeth_reply*,
545 unsigned long))
546 {
547 struct qeth_ipa_cmd *cmd;
548 struct qeth_cmd_buffer *iob;
549
550 QETH_CARD_TEXT(card, 2, "L2sdmac");
551 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
552 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
553 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
554 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
555 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
556 }
557
qeth_l2_send_setmac_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)558 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
559 struct qeth_reply *reply,
560 unsigned long data)
561 {
562 struct qeth_ipa_cmd *cmd;
563
564 QETH_CARD_TEXT(card, 2, "L2Smaccb");
565 cmd = (struct qeth_ipa_cmd *) data;
566 if (cmd->hdr.return_code) {
567 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
568 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
569 switch (cmd->hdr.return_code) {
570 case IPA_RC_L2_DUP_MAC:
571 case IPA_RC_L2_DUP_LAYER3_MAC:
572 dev_warn(&card->gdev->dev,
573 "MAC address %pM already exists\n",
574 cmd->data.setdelmac.mac);
575 break;
576 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
577 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
578 dev_warn(&card->gdev->dev,
579 "MAC address %pM is not authorized\n",
580 cmd->data.setdelmac.mac);
581 break;
582 default:
583 break;
584 }
585 } else {
586 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
587 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
588 OSA_ADDR_LEN);
589 dev_info(&card->gdev->dev,
590 "MAC address %pM successfully registered on device %s\n",
591 card->dev->dev_addr, card->dev->name);
592 }
593 return 0;
594 }
595
qeth_l2_send_setmac(struct qeth_card * card,__u8 * mac)596 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
597 {
598 QETH_CARD_TEXT(card, 2, "L2Setmac");
599 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
600 qeth_l2_send_setmac_cb);
601 }
602
qeth_l2_send_delmac_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)603 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
604 struct qeth_reply *reply,
605 unsigned long data)
606 {
607 struct qeth_ipa_cmd *cmd;
608
609 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
610 cmd = (struct qeth_ipa_cmd *) data;
611 if (cmd->hdr.return_code) {
612 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
613 return 0;
614 }
615 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
616
617 return 0;
618 }
619
qeth_l2_send_delmac(struct qeth_card * card,__u8 * mac)620 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
621 {
622 QETH_CARD_TEXT(card, 2, "L2Delmac");
623 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
624 return 0;
625 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
626 qeth_l2_send_delmac_cb);
627 }
628
qeth_l2_request_initial_mac(struct qeth_card * card)629 static int qeth_l2_request_initial_mac(struct qeth_card *card)
630 {
631 int rc = 0;
632 char vendor_pre[] = {0x02, 0x00, 0x00};
633
634 QETH_DBF_TEXT(SETUP, 2, "doL2init");
635 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
636
637 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
638 rc = qeth_query_setadapterparms(card);
639 if (rc) {
640 QETH_DBF_MESSAGE(2, "could not query adapter "
641 "parameters on device %s: x%x\n",
642 CARD_BUS_ID(card), rc);
643 }
644 }
645
646 if (card->info.type == QETH_CARD_TYPE_IQD ||
647 card->info.type == QETH_CARD_TYPE_OSM ||
648 card->info.type == QETH_CARD_TYPE_OSX ||
649 card->info.guestlan) {
650 rc = qeth_setadpparms_change_macaddr(card);
651 if (rc) {
652 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
653 "device %s: x%x\n", CARD_BUS_ID(card), rc);
654 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
655 return rc;
656 }
657 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
658 } else {
659 eth_random_addr(card->dev->dev_addr);
660 memcpy(card->dev->dev_addr, vendor_pre, 3);
661 }
662 return 0;
663 }
664
qeth_l2_set_mac_address(struct net_device * dev,void * p)665 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
666 {
667 struct sockaddr *addr = p;
668 struct qeth_card *card = dev->ml_priv;
669 int rc = 0;
670
671 QETH_CARD_TEXT(card, 3, "setmac");
672
673 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
674 QETH_CARD_TEXT(card, 3, "setmcINV");
675 return -EOPNOTSUPP;
676 }
677
678 if (card->info.type == QETH_CARD_TYPE_OSN ||
679 card->info.type == QETH_CARD_TYPE_OSM ||
680 card->info.type == QETH_CARD_TYPE_OSX) {
681 QETH_CARD_TEXT(card, 3, "setmcTYP");
682 return -EOPNOTSUPP;
683 }
684 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
685 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
686 QETH_CARD_TEXT(card, 3, "setmcREC");
687 return -ERESTARTSYS;
688 }
689 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
690 if (!rc || (rc == IPA_RC_L2_MAC_NOT_FOUND))
691 rc = qeth_l2_send_setmac(card, addr->sa_data);
692 return rc ? -EINVAL : 0;
693 }
694
qeth_l2_set_multicast_list(struct net_device * dev)695 static void qeth_l2_set_multicast_list(struct net_device *dev)
696 {
697 struct qeth_card *card = dev->ml_priv;
698 struct netdev_hw_addr *ha;
699
700 if (card->info.type == QETH_CARD_TYPE_OSN)
701 return ;
702
703 QETH_CARD_TEXT(card, 3, "setmulti");
704 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
705 (card->state != CARD_STATE_UP))
706 return;
707 qeth_l2_del_all_mc(card, 1);
708 spin_lock_bh(&card->mclock);
709 netdev_for_each_mc_addr(ha, dev)
710 qeth_l2_add_mc(card, ha->addr, 0);
711
712 netdev_for_each_uc_addr(ha, dev)
713 qeth_l2_add_mc(card, ha->addr, 1);
714
715 spin_unlock_bh(&card->mclock);
716 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
717 return;
718 qeth_setadp_promisc_mode(card);
719 }
720
qeth_l2_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)721 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
722 {
723 int rc;
724 struct qeth_hdr *hdr = NULL;
725 int elements = 0;
726 struct qeth_card *card = dev->ml_priv;
727 struct sk_buff *new_skb = skb;
728 int cast_type = qeth_l2_get_cast_type(card, skb);
729 struct qeth_qdio_out_q *queue;
730 int tx_bytes = skb->len;
731 int data_offset = -1;
732 int elements_needed = 0;
733 int hd_len = 0;
734
735 if (card->qdio.do_prio_queueing || (cast_type &&
736 card->info.is_multicast_different))
737 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
738 qeth_get_ip_version(skb), cast_type)];
739 else
740 queue = card->qdio.out_qs[card->qdio.default_out_queue];
741
742 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
743 card->stats.tx_carrier_errors++;
744 goto tx_drop;
745 }
746
747 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
748 (skb->protocol == htons(ETH_P_IPV6)))
749 goto tx_drop;
750
751 if (card->options.performance_stats) {
752 card->perf_stats.outbound_cnt++;
753 card->perf_stats.outbound_start_time = qeth_get_micros();
754 }
755 netif_stop_queue(dev);
756
757 if (card->info.type == QETH_CARD_TYPE_OSN)
758 hdr = (struct qeth_hdr *)skb->data;
759 else {
760 if (card->info.type == QETH_CARD_TYPE_IQD) {
761 new_skb = skb;
762 data_offset = ETH_HLEN;
763 hd_len = ETH_HLEN;
764 hdr = kmem_cache_alloc(qeth_core_header_cache,
765 GFP_ATOMIC);
766 if (!hdr)
767 goto tx_drop;
768 elements_needed++;
769 skb_reset_mac_header(new_skb);
770 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
771 hdr->hdr.l2.pkt_length = new_skb->len;
772 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
773 skb_mac_header(new_skb), ETH_HLEN);
774 } else {
775 /* create a clone with writeable headroom */
776 new_skb = skb_realloc_headroom(skb,
777 sizeof(struct qeth_hdr));
778 if (!new_skb)
779 goto tx_drop;
780 hdr = (struct qeth_hdr *)skb_push(new_skb,
781 sizeof(struct qeth_hdr));
782 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
783 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
784 }
785 }
786
787 elements = qeth_get_elements_no(card, new_skb, elements_needed);
788 if (!elements) {
789 if (data_offset >= 0)
790 kmem_cache_free(qeth_core_header_cache, hdr);
791 goto tx_drop;
792 }
793
794 if (card->info.type != QETH_CARD_TYPE_IQD) {
795 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
796 sizeof(struct qeth_hdr_layer2)))
797 goto tx_drop;
798 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
799 elements);
800 } else
801 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
802 elements, data_offset, hd_len);
803 if (!rc) {
804 card->stats.tx_packets++;
805 card->stats.tx_bytes += tx_bytes;
806 if (new_skb != skb)
807 dev_kfree_skb_any(skb);
808 rc = NETDEV_TX_OK;
809 } else {
810 if (data_offset >= 0)
811 kmem_cache_free(qeth_core_header_cache, hdr);
812
813 if (rc == -EBUSY) {
814 if (new_skb != skb)
815 dev_kfree_skb_any(new_skb);
816 return NETDEV_TX_BUSY;
817 } else
818 goto tx_drop;
819 }
820
821 netif_wake_queue(dev);
822 if (card->options.performance_stats)
823 card->perf_stats.outbound_time += qeth_get_micros() -
824 card->perf_stats.outbound_start_time;
825 return rc;
826
827 tx_drop:
828 card->stats.tx_dropped++;
829 card->stats.tx_errors++;
830 if ((new_skb != skb) && new_skb)
831 dev_kfree_skb_any(new_skb);
832 dev_kfree_skb_any(skb);
833 netif_wake_queue(dev);
834 return NETDEV_TX_OK;
835 }
836
__qeth_l2_open(struct net_device * dev)837 static int __qeth_l2_open(struct net_device *dev)
838 {
839 struct qeth_card *card = dev->ml_priv;
840 int rc = 0;
841
842 QETH_CARD_TEXT(card, 4, "qethopen");
843 if (card->state == CARD_STATE_UP)
844 return rc;
845 if (card->state != CARD_STATE_SOFTSETUP)
846 return -ENODEV;
847
848 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
849 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
850 QETH_CARD_TEXT(card, 4, "nomacadr");
851 return -EPERM;
852 }
853 card->data.state = CH_STATE_UP;
854 card->state = CARD_STATE_UP;
855 netif_start_queue(dev);
856
857 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
858 napi_enable(&card->napi);
859 napi_schedule(&card->napi);
860 } else
861 rc = -EIO;
862 return rc;
863 }
864
qeth_l2_open(struct net_device * dev)865 static int qeth_l2_open(struct net_device *dev)
866 {
867 struct qeth_card *card = dev->ml_priv;
868
869 QETH_CARD_TEXT(card, 5, "qethope_");
870 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
871 QETH_CARD_TEXT(card, 3, "openREC");
872 return -ERESTARTSYS;
873 }
874 return __qeth_l2_open(dev);
875 }
876
qeth_l2_stop(struct net_device * dev)877 static int qeth_l2_stop(struct net_device *dev)
878 {
879 struct qeth_card *card = dev->ml_priv;
880
881 QETH_CARD_TEXT(card, 4, "qethstop");
882 netif_tx_disable(dev);
883 if (card->state == CARD_STATE_UP) {
884 card->state = CARD_STATE_SOFTSETUP;
885 napi_disable(&card->napi);
886 }
887 return 0;
888 }
889
890 static const struct device_type qeth_l2_devtype = {
891 .name = "qeth_layer2",
892 .groups = qeth_l2_attr_groups,
893 };
894
qeth_l2_probe_device(struct ccwgroup_device * gdev)895 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
896 {
897 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
898 int rc;
899
900 if (gdev->dev.type == &qeth_generic_devtype) {
901 rc = qeth_l2_create_device_attributes(&gdev->dev);
902 if (rc)
903 return rc;
904 }
905 INIT_LIST_HEAD(&card->vid_list);
906 INIT_LIST_HEAD(&card->mc_list);
907 card->options.layer2 = 1;
908 card->info.hwtrap = 0;
909 return 0;
910 }
911
qeth_l2_remove_device(struct ccwgroup_device * cgdev)912 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
913 {
914 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
915
916 if (cgdev->dev.type == &qeth_generic_devtype)
917 qeth_l2_remove_device_attributes(&cgdev->dev);
918 qeth_set_allowed_threads(card, 0, 1);
919 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
920
921 if (cgdev->state == CCWGROUP_ONLINE)
922 qeth_l2_set_offline(cgdev);
923
924 if (card->dev) {
925 netif_napi_del(&card->napi);
926 unregister_netdev(card->dev);
927 card->dev = NULL;
928 }
929 return;
930 }
931
932 static const struct ethtool_ops qeth_l2_ethtool_ops = {
933 .get_link = ethtool_op_get_link,
934 .get_strings = qeth_core_get_strings,
935 .get_ethtool_stats = qeth_core_get_ethtool_stats,
936 .get_sset_count = qeth_core_get_sset_count,
937 .get_drvinfo = qeth_core_get_drvinfo,
938 .get_settings = qeth_core_ethtool_get_settings,
939 };
940
941 static const struct ethtool_ops qeth_l2_osn_ops = {
942 .get_strings = qeth_core_get_strings,
943 .get_ethtool_stats = qeth_core_get_ethtool_stats,
944 .get_sset_count = qeth_core_get_sset_count,
945 .get_drvinfo = qeth_core_get_drvinfo,
946 };
947
948 static const struct net_device_ops qeth_l2_netdev_ops = {
949 .ndo_open = qeth_l2_open,
950 .ndo_stop = qeth_l2_stop,
951 .ndo_get_stats = qeth_get_stats,
952 .ndo_start_xmit = qeth_l2_hard_start_xmit,
953 .ndo_validate_addr = eth_validate_addr,
954 .ndo_set_rx_mode = qeth_l2_set_multicast_list,
955 .ndo_do_ioctl = qeth_l2_do_ioctl,
956 .ndo_set_mac_address = qeth_l2_set_mac_address,
957 .ndo_change_mtu = qeth_change_mtu,
958 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
959 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
960 .ndo_tx_timeout = qeth_tx_timeout,
961 };
962
qeth_l2_setup_netdev(struct qeth_card * card)963 static int qeth_l2_setup_netdev(struct qeth_card *card)
964 {
965 switch (card->info.type) {
966 case QETH_CARD_TYPE_IQD:
967 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
968 ether_setup);
969 break;
970 case QETH_CARD_TYPE_OSN:
971 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
972 ether_setup);
973 break;
974 default:
975 card->dev = alloc_etherdev(0);
976 }
977
978 if (!card->dev)
979 return -ENODEV;
980
981 card->dev->ml_priv = card;
982 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
983 card->dev->mtu = card->info.initial_mtu;
984 card->dev->netdev_ops = &qeth_l2_netdev_ops;
985 if (card->info.type == QETH_CARD_TYPE_OSN) {
986 card->dev->ethtool_ops = &qeth_l2_osn_ops;
987 card->dev->flags |= IFF_NOARP;
988 } else {
989 card->dev->ethtool_ops = &qeth_l2_ethtool_ops;
990 }
991 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
992 card->info.broadcast_capable = 1;
993 qeth_l2_request_initial_mac(card);
994 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
995 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
996 return register_netdev(card->dev);
997 }
998
__qeth_l2_set_online(struct ccwgroup_device * gdev,int recovery_mode)999 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1000 {
1001 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1002 int rc = 0;
1003 enum qeth_card_states recover_flag;
1004
1005 mutex_lock(&card->discipline_mutex);
1006 mutex_lock(&card->conf_mutex);
1007 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1008 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1009
1010 recover_flag = card->state;
1011 rc = qeth_core_hardsetup_card(card);
1012 if (rc) {
1013 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1014 rc = -ENODEV;
1015 goto out_remove;
1016 }
1017 qeth_bridgeport_query_support(card);
1018 if (card->options.sbp.supported_funcs)
1019 dev_info(&card->gdev->dev,
1020 "The device represents a HiperSockets Bridge Capable Port\n");
1021 qeth_trace_features(card);
1022
1023 if (!card->dev && qeth_l2_setup_netdev(card)) {
1024 rc = -ENODEV;
1025 goto out_remove;
1026 }
1027
1028 if (card->info.type != QETH_CARD_TYPE_OSN)
1029 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1030
1031 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1032 if (card->info.hwtrap &&
1033 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1034 card->info.hwtrap = 0;
1035 } else
1036 card->info.hwtrap = 0;
1037
1038 qeth_l2_setup_bridgeport_attrs(card);
1039
1040 card->state = CARD_STATE_HARDSETUP;
1041 memset(&card->rx, 0, sizeof(struct qeth_rx));
1042 qeth_print_status_message(card);
1043
1044 /* softsetup */
1045 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1046
1047 rc = qeth_send_startlan(card);
1048 if (rc) {
1049 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1050 if (rc == 0xe080) {
1051 dev_warn(&card->gdev->dev,
1052 "The LAN is offline\n");
1053 card->lan_online = 0;
1054 goto contin;
1055 }
1056 rc = -ENODEV;
1057 goto out_remove;
1058 } else
1059 card->lan_online = 1;
1060
1061 contin:
1062 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1063 (card->info.type == QETH_CARD_TYPE_OSX)) {
1064 /* configure isolation level */
1065 rc = qeth_set_access_ctrl_online(card, 0);
1066 if (rc) {
1067 rc = -ENODEV;
1068 goto out_remove;
1069 }
1070 }
1071
1072 if (card->info.type != QETH_CARD_TYPE_OSN &&
1073 card->info.type != QETH_CARD_TYPE_OSM)
1074 qeth_l2_process_vlans(card);
1075
1076 netif_tx_disable(card->dev);
1077
1078 rc = qeth_init_qdio_queues(card);
1079 if (rc) {
1080 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1081 rc = -ENODEV;
1082 goto out_remove;
1083 }
1084 card->state = CARD_STATE_SOFTSETUP;
1085 if (card->lan_online)
1086 netif_carrier_on(card->dev);
1087 else
1088 netif_carrier_off(card->dev);
1089
1090 qeth_set_allowed_threads(card, 0xffffffff, 0);
1091 if (recover_flag == CARD_STATE_RECOVER) {
1092 if (recovery_mode &&
1093 card->info.type != QETH_CARD_TYPE_OSN) {
1094 __qeth_l2_open(card->dev);
1095 } else {
1096 rtnl_lock();
1097 dev_open(card->dev);
1098 rtnl_unlock();
1099 }
1100 /* this also sets saved unicast addresses */
1101 qeth_l2_set_multicast_list(card->dev);
1102 }
1103 /* let user_space know that device is online */
1104 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1105 mutex_unlock(&card->conf_mutex);
1106 mutex_unlock(&card->discipline_mutex);
1107 return 0;
1108
1109 out_remove:
1110 qeth_l2_stop_card(card, 0);
1111 ccw_device_set_offline(CARD_DDEV(card));
1112 ccw_device_set_offline(CARD_WDEV(card));
1113 ccw_device_set_offline(CARD_RDEV(card));
1114 qdio_free(CARD_DDEV(card));
1115 if (recover_flag == CARD_STATE_RECOVER)
1116 card->state = CARD_STATE_RECOVER;
1117 else
1118 card->state = CARD_STATE_DOWN;
1119 mutex_unlock(&card->conf_mutex);
1120 mutex_unlock(&card->discipline_mutex);
1121 return rc;
1122 }
1123
qeth_l2_set_online(struct ccwgroup_device * gdev)1124 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1125 {
1126 return __qeth_l2_set_online(gdev, 0);
1127 }
1128
__qeth_l2_set_offline(struct ccwgroup_device * cgdev,int recovery_mode)1129 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1130 int recovery_mode)
1131 {
1132 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1133 int rc = 0, rc2 = 0, rc3 = 0;
1134 enum qeth_card_states recover_flag;
1135
1136 mutex_lock(&card->discipline_mutex);
1137 mutex_lock(&card->conf_mutex);
1138 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1139 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1140
1141 if (card->dev && netif_carrier_ok(card->dev))
1142 netif_carrier_off(card->dev);
1143 recover_flag = card->state;
1144 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1145 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1146 card->info.hwtrap = 1;
1147 }
1148 qeth_l2_stop_card(card, recovery_mode);
1149 rc = ccw_device_set_offline(CARD_DDEV(card));
1150 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1151 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1152 if (!rc)
1153 rc = (rc2) ? rc2 : rc3;
1154 if (rc)
1155 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1156 qdio_free(CARD_DDEV(card));
1157 if (recover_flag == CARD_STATE_UP)
1158 card->state = CARD_STATE_RECOVER;
1159 /* let user_space know that device is offline */
1160 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1161 mutex_unlock(&card->conf_mutex);
1162 mutex_unlock(&card->discipline_mutex);
1163 return 0;
1164 }
1165
qeth_l2_set_offline(struct ccwgroup_device * cgdev)1166 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1167 {
1168 return __qeth_l2_set_offline(cgdev, 0);
1169 }
1170
qeth_l2_recover(void * ptr)1171 static int qeth_l2_recover(void *ptr)
1172 {
1173 struct qeth_card *card;
1174 int rc = 0;
1175
1176 card = (struct qeth_card *) ptr;
1177 QETH_CARD_TEXT(card, 2, "recover1");
1178 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1179 return 0;
1180 QETH_CARD_TEXT(card, 2, "recover2");
1181 dev_warn(&card->gdev->dev,
1182 "A recovery process has been started for the device\n");
1183 qeth_set_recovery_task(card);
1184 __qeth_l2_set_offline(card->gdev, 1);
1185 rc = __qeth_l2_set_online(card->gdev, 1);
1186 if (!rc)
1187 dev_info(&card->gdev->dev,
1188 "Device successfully recovered!\n");
1189 else {
1190 qeth_close_dev(card);
1191 dev_warn(&card->gdev->dev, "The qeth device driver "
1192 "failed to recover an error on the device\n");
1193 }
1194 qeth_clear_recovery_task(card);
1195 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1196 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1197 return 0;
1198 }
1199
qeth_l2_init(void)1200 static int __init qeth_l2_init(void)
1201 {
1202 pr_info("register layer 2 discipline\n");
1203 return 0;
1204 }
1205
qeth_l2_exit(void)1206 static void __exit qeth_l2_exit(void)
1207 {
1208 pr_info("unregister layer 2 discipline\n");
1209 }
1210
qeth_l2_shutdown(struct ccwgroup_device * gdev)1211 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1212 {
1213 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1214 qeth_set_allowed_threads(card, 0, 1);
1215 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1216 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1217 qeth_qdio_clear_card(card, 0);
1218 qeth_clear_qdio_buffers(card);
1219 qdio_free(CARD_DDEV(card));
1220 }
1221
qeth_l2_pm_suspend(struct ccwgroup_device * gdev)1222 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1223 {
1224 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1225
1226 if (card->dev)
1227 netif_device_detach(card->dev);
1228 qeth_set_allowed_threads(card, 0, 1);
1229 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1230 if (gdev->state == CCWGROUP_OFFLINE)
1231 return 0;
1232 if (card->state == CARD_STATE_UP) {
1233 if (card->info.hwtrap)
1234 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1235 __qeth_l2_set_offline(card->gdev, 1);
1236 } else
1237 __qeth_l2_set_offline(card->gdev, 0);
1238 return 0;
1239 }
1240
qeth_l2_pm_resume(struct ccwgroup_device * gdev)1241 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1242 {
1243 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1244 int rc = 0;
1245
1246 if (gdev->state == CCWGROUP_OFFLINE)
1247 goto out;
1248
1249 if (card->state == CARD_STATE_RECOVER) {
1250 rc = __qeth_l2_set_online(card->gdev, 1);
1251 if (rc) {
1252 rtnl_lock();
1253 dev_close(card->dev);
1254 rtnl_unlock();
1255 }
1256 } else
1257 rc = __qeth_l2_set_online(card->gdev, 0);
1258 out:
1259 qeth_set_allowed_threads(card, 0xffffffff, 0);
1260 if (card->dev)
1261 netif_device_attach(card->dev);
1262 if (rc)
1263 dev_warn(&card->gdev->dev, "The qeth device driver "
1264 "failed to recover an error on the device\n");
1265 return rc;
1266 }
1267
1268 /* Returns zero if the command is successfully "consumed" */
qeth_l2_control_event(struct qeth_card * card,struct qeth_ipa_cmd * cmd)1269 static int qeth_l2_control_event(struct qeth_card *card,
1270 struct qeth_ipa_cmd *cmd)
1271 {
1272 switch (cmd->hdr.command) {
1273 case IPA_CMD_SETBRIDGEPORT:
1274 if (cmd->data.sbp.hdr.command_code ==
1275 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1276 qeth_bridge_state_change(card, cmd);
1277 return 0;
1278 } else
1279 return 1;
1280 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1281 qeth_bridge_host_event(card, cmd);
1282 return 0;
1283 default:
1284 return 1;
1285 }
1286 }
1287
1288 struct qeth_discipline qeth_l2_discipline = {
1289 .devtype = &qeth_l2_devtype,
1290 .start_poll = qeth_qdio_start_poll,
1291 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1292 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1293 .recover = qeth_l2_recover,
1294 .setup = qeth_l2_probe_device,
1295 .remove = qeth_l2_remove_device,
1296 .set_online = qeth_l2_set_online,
1297 .set_offline = qeth_l2_set_offline,
1298 .shutdown = qeth_l2_shutdown,
1299 .freeze = qeth_l2_pm_suspend,
1300 .thaw = qeth_l2_pm_resume,
1301 .restore = qeth_l2_pm_resume,
1302 .control_event_handler = qeth_l2_control_event,
1303 };
1304 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1305
qeth_osn_send_control_data(struct qeth_card * card,int len,struct qeth_cmd_buffer * iob)1306 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1307 struct qeth_cmd_buffer *iob)
1308 {
1309 unsigned long flags;
1310 int rc = 0;
1311
1312 QETH_CARD_TEXT(card, 5, "osndctrd");
1313
1314 wait_event(card->wait_q,
1315 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1316 qeth_prepare_control_data(card, len, iob);
1317 QETH_CARD_TEXT(card, 6, "osnoirqp");
1318 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1319 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1320 (addr_t) iob, 0, 0);
1321 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1322 if (rc) {
1323 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1324 "ccw_device_start rc = %i\n", rc);
1325 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1326 qeth_release_buffer(iob->channel, iob);
1327 atomic_set(&card->write.irq_pending, 0);
1328 wake_up(&card->wait_q);
1329 }
1330 return rc;
1331 }
1332
qeth_osn_send_ipa_cmd(struct qeth_card * card,struct qeth_cmd_buffer * iob,int data_len)1333 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1334 struct qeth_cmd_buffer *iob, int data_len)
1335 {
1336 u16 s1, s2;
1337
1338 QETH_CARD_TEXT(card, 4, "osndipa");
1339
1340 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1341 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1342 s2 = (u16)data_len;
1343 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1344 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1345 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1346 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1347 return qeth_osn_send_control_data(card, s1, iob);
1348 }
1349
qeth_osn_assist(struct net_device * dev,void * data,int data_len)1350 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1351 {
1352 struct qeth_cmd_buffer *iob;
1353 struct qeth_card *card;
1354 int rc;
1355
1356 if (!dev)
1357 return -ENODEV;
1358 card = dev->ml_priv;
1359 if (!card)
1360 return -ENODEV;
1361 QETH_CARD_TEXT(card, 2, "osnsdmc");
1362 if ((card->state != CARD_STATE_UP) &&
1363 (card->state != CARD_STATE_SOFTSETUP))
1364 return -ENODEV;
1365 iob = qeth_wait_for_buffer(&card->write);
1366 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1367 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1368 return rc;
1369 }
1370 EXPORT_SYMBOL(qeth_osn_assist);
1371
qeth_osn_register(unsigned char * read_dev_no,struct net_device ** dev,int (* assist_cb)(struct net_device *,void *),int (* data_cb)(struct sk_buff *))1372 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1373 int (*assist_cb)(struct net_device *, void *),
1374 int (*data_cb)(struct sk_buff *))
1375 {
1376 struct qeth_card *card;
1377
1378 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1379 if (*dev == NULL)
1380 return -ENODEV;
1381 card = (*dev)->ml_priv;
1382 if (!card)
1383 return -ENODEV;
1384 QETH_CARD_TEXT(card, 2, "osnreg");
1385 if ((assist_cb == NULL) || (data_cb == NULL))
1386 return -EINVAL;
1387 card->osn_info.assist_cb = assist_cb;
1388 card->osn_info.data_cb = data_cb;
1389 return 0;
1390 }
1391 EXPORT_SYMBOL(qeth_osn_register);
1392
qeth_osn_deregister(struct net_device * dev)1393 void qeth_osn_deregister(struct net_device *dev)
1394 {
1395 struct qeth_card *card;
1396
1397 if (!dev)
1398 return;
1399 card = dev->ml_priv;
1400 if (!card)
1401 return;
1402 QETH_CARD_TEXT(card, 2, "osndereg");
1403 card->osn_info.assist_cb = NULL;
1404 card->osn_info.data_cb = NULL;
1405 return;
1406 }
1407 EXPORT_SYMBOL(qeth_osn_deregister);
1408
1409 /* SETBRIDGEPORT support, async notifications */
1410
1411 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1412
1413 /**
1414 * qeth_bridge_emit_host_event() - bridgeport address change notification
1415 * @card: qeth_card structure pointer, for udev events.
1416 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1417 * and reset token and addr_lnid are unused and may be NULL.
1418 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1419 * object, 0 - addition of an object.
1420 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1421 * @token: "network token" structure identifying physical address of the port.
1422 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1423 *
1424 * This function is called when registrations and deregistrations are
1425 * reported by the hardware, and also when notifications are enabled -
1426 * for all currently registered addresses.
1427 */
qeth_bridge_emit_host_event(struct qeth_card * card,enum qeth_an_event_type evtype,u8 code,struct net_if_token * token,struct mac_addr_lnid * addr_lnid)1428 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1429 enum qeth_an_event_type evtype,
1430 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1431 {
1432 char str[7][32];
1433 char *env[8];
1434 int i = 0;
1435
1436 switch (evtype) {
1437 case anev_reg_unreg:
1438 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1439 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1440 ? "deregister" : "register");
1441 env[i] = str[i]; i++;
1442 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1443 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1444 addr_lnid->lnid);
1445 env[i] = str[i]; i++;
1446 }
1447 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1448 snprintf(str[i], sizeof(str[i]), "MAC=%pM6",
1449 &addr_lnid->mac);
1450 env[i] = str[i]; i++;
1451 }
1452 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1453 token->cssid, token->ssid, token->devnum);
1454 env[i] = str[i]; i++;
1455 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1456 env[i] = str[i]; i++;
1457 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1458 token->chpid);
1459 env[i] = str[i]; i++;
1460 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1461 env[i] = str[i]; i++;
1462 break;
1463 case anev_abort:
1464 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1465 env[i] = str[i]; i++;
1466 break;
1467 case anev_reset:
1468 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1469 env[i] = str[i]; i++;
1470 break;
1471 }
1472 env[i] = NULL;
1473 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1474 }
1475
1476 struct qeth_bridge_state_data {
1477 struct work_struct worker;
1478 struct qeth_card *card;
1479 struct qeth_sbp_state_change qports;
1480 };
1481
qeth_bridge_state_change_worker(struct work_struct * work)1482 static void qeth_bridge_state_change_worker(struct work_struct *work)
1483 {
1484 struct qeth_bridge_state_data *data =
1485 container_of(work, struct qeth_bridge_state_data, worker);
1486 /* We are only interested in the first entry - local port */
1487 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1488 char env_locrem[32];
1489 char env_role[32];
1490 char env_state[32];
1491 char *env[] = {
1492 env_locrem,
1493 env_role,
1494 env_state,
1495 NULL
1496 };
1497
1498 /* Role should not change by itself, but if it did, */
1499 /* information from the hardware is authoritative. */
1500 mutex_lock(&data->card->conf_mutex);
1501 data->card->options.sbp.role = entry->role;
1502 mutex_unlock(&data->card->conf_mutex);
1503
1504 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1505 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1506 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1507 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1508 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1509 "<INVALID>");
1510 snprintf(env_state, sizeof(env_state), "STATE=%s",
1511 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1512 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1513 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1514 "<INVALID>");
1515 kobject_uevent_env(&data->card->gdev->dev.kobj,
1516 KOBJ_CHANGE, env);
1517 kfree(data);
1518 }
1519
qeth_bridge_state_change(struct qeth_card * card,struct qeth_ipa_cmd * cmd)1520 static void qeth_bridge_state_change(struct qeth_card *card,
1521 struct qeth_ipa_cmd *cmd)
1522 {
1523 struct qeth_sbp_state_change *qports =
1524 &cmd->data.sbp.data.state_change;
1525 struct qeth_bridge_state_data *data;
1526 int extrasize;
1527
1528 QETH_CARD_TEXT(card, 2, "brstchng");
1529 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1530 QETH_CARD_TEXT_(card, 2, "BPsz%.8d", qports->entry_length);
1531 return;
1532 }
1533 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1534 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1535 GFP_ATOMIC);
1536 if (!data) {
1537 QETH_CARD_TEXT(card, 2, "BPSalloc");
1538 return;
1539 }
1540 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1541 data->card = card;
1542 memcpy(&data->qports, qports,
1543 sizeof(struct qeth_sbp_state_change) + extrasize);
1544 queue_work(qeth_wq, &data->worker);
1545 }
1546
1547 struct qeth_bridge_host_data {
1548 struct work_struct worker;
1549 struct qeth_card *card;
1550 struct qeth_ipacmd_addr_change hostevs;
1551 };
1552
qeth_bridge_host_event_worker(struct work_struct * work)1553 static void qeth_bridge_host_event_worker(struct work_struct *work)
1554 {
1555 struct qeth_bridge_host_data *data =
1556 container_of(work, struct qeth_bridge_host_data, worker);
1557 int i;
1558
1559 if (data->hostevs.lost_event_mask) {
1560 dev_info(&data->card->gdev->dev,
1561 "Address notification from the HiperSockets Bridge Port stopped %s (%s)\n",
1562 data->card->dev->name,
1563 (data->hostevs.lost_event_mask == 0x01)
1564 ? "Overflow"
1565 : (data->hostevs.lost_event_mask == 0x02)
1566 ? "Bridge port state change"
1567 : "Unknown reason");
1568 mutex_lock(&data->card->conf_mutex);
1569 data->card->options.sbp.hostnotification = 0;
1570 mutex_unlock(&data->card->conf_mutex);
1571 qeth_bridge_emit_host_event(data->card, anev_abort,
1572 0, NULL, NULL);
1573 } else
1574 for (i = 0; i < data->hostevs.num_entries; i++) {
1575 struct qeth_ipacmd_addr_change_entry *entry =
1576 &data->hostevs.entry[i];
1577 qeth_bridge_emit_host_event(data->card,
1578 anev_reg_unreg,
1579 entry->change_code,
1580 &entry->token, &entry->addr_lnid);
1581 }
1582 kfree(data);
1583 }
1584
qeth_bridge_host_event(struct qeth_card * card,struct qeth_ipa_cmd * cmd)1585 static void qeth_bridge_host_event(struct qeth_card *card,
1586 struct qeth_ipa_cmd *cmd)
1587 {
1588 struct qeth_ipacmd_addr_change *hostevs =
1589 &cmd->data.addrchange;
1590 struct qeth_bridge_host_data *data;
1591 int extrasize;
1592
1593 QETH_CARD_TEXT(card, 2, "brhostev");
1594 if (cmd->hdr.return_code != 0x0000) {
1595 if (cmd->hdr.return_code == 0x0010) {
1596 if (hostevs->lost_event_mask == 0x00)
1597 hostevs->lost_event_mask = 0xff;
1598 } else {
1599 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1600 cmd->hdr.return_code);
1601 return;
1602 }
1603 }
1604 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1605 hostevs->num_entries;
1606 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1607 GFP_ATOMIC);
1608 if (!data) {
1609 QETH_CARD_TEXT(card, 2, "BPHalloc");
1610 return;
1611 }
1612 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1613 data->card = card;
1614 memcpy(&data->hostevs, hostevs,
1615 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1616 queue_work(qeth_wq, &data->worker);
1617 }
1618
1619 /* SETBRIDGEPORT support; sending commands */
1620
1621 struct _qeth_sbp_cbctl {
1622 u16 ipa_rc;
1623 u16 cmd_rc;
1624 union {
1625 u32 supported;
1626 struct {
1627 enum qeth_sbp_roles *role;
1628 enum qeth_sbp_states *state;
1629 } qports;
1630 } data;
1631 };
1632
1633 /**
1634 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1635 * @card: qeth_card structure pointer, for debug messages.
1636 * @cbctl: state structure with hardware return codes.
1637 * @setcmd: IPA command code
1638 *
1639 * Returns negative errno-compatible error indication or 0 on success.
1640 */
qeth_bridgeport_makerc(struct qeth_card * card,struct _qeth_sbp_cbctl * cbctl,enum qeth_ipa_sbp_cmd setcmd)1641 static int qeth_bridgeport_makerc(struct qeth_card *card,
1642 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1643 {
1644 int rc;
1645
1646 switch (cbctl->ipa_rc) {
1647 case IPA_RC_SUCCESS:
1648 switch (cbctl->cmd_rc) {
1649 case 0x0000:
1650 rc = 0;
1651 break;
1652 case 0x0004:
1653 rc = -ENOSYS;
1654 break;
1655 case 0x000C: /* Not configured as bridge Port */
1656 rc = -ENODEV; /* maybe not the best code here? */
1657 dev_err(&card->gdev->dev,
1658 "The HiperSockets device is not configured as a Bridge Port\n");
1659 break;
1660 case 0x0014: /* Another device is Primary */
1661 switch (setcmd) {
1662 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1663 rc = -EEXIST;
1664 dev_err(&card->gdev->dev,
1665 "The HiperSockets LAN already has a primary Bridge Port\n");
1666 break;
1667 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1668 rc = -EBUSY;
1669 dev_err(&card->gdev->dev,
1670 "The HiperSockets device is already a primary Bridge Port\n");
1671 break;
1672 default:
1673 rc = -EIO;
1674 }
1675 break;
1676 case 0x0018: /* This device is currently Secondary */
1677 rc = -EBUSY;
1678 dev_err(&card->gdev->dev,
1679 "The HiperSockets device is already a secondary Bridge Port\n");
1680 break;
1681 case 0x001C: /* Limit for Secondary devices reached */
1682 rc = -EEXIST;
1683 dev_err(&card->gdev->dev,
1684 "The HiperSockets LAN cannot have more secondary Bridge Ports\n");
1685 break;
1686 case 0x0024: /* This device is currently Primary */
1687 rc = -EBUSY;
1688 dev_err(&card->gdev->dev,
1689 "The HiperSockets device is already a primary Bridge Port\n");
1690 break;
1691 case 0x0020: /* Not authorized by zManager */
1692 rc = -EACCES;
1693 dev_err(&card->gdev->dev,
1694 "The HiperSockets device is not authorized to be a Bridge Port\n");
1695 break;
1696 default:
1697 rc = -EIO;
1698 }
1699 break;
1700 case IPA_RC_NOTSUPP:
1701 rc = -ENOSYS;
1702 break;
1703 case IPA_RC_UNSUPPORTED_COMMAND:
1704 rc = -ENOSYS;
1705 break;
1706 default:
1707 rc = -EIO;
1708 }
1709 if (rc) {
1710 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1711 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1712 }
1713 return rc;
1714 }
1715
qeth_bridgeport_query_support_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1716 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1717 struct qeth_reply *reply, unsigned long data)
1718 {
1719 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1720 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1721 QETH_CARD_TEXT(card, 2, "brqsupcb");
1722 cbctl->ipa_rc = cmd->hdr.return_code;
1723 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1724 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1725 cbctl->data.supported =
1726 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1727 } else {
1728 cbctl->data.supported = 0;
1729 }
1730 return 0;
1731 }
1732
1733 /**
1734 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1735 * @card: qeth_card structure pointer.
1736 *
1737 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1738 * strucutre: card->options.sbp.supported_funcs.
1739 */
qeth_bridgeport_query_support(struct qeth_card * card)1740 static void qeth_bridgeport_query_support(struct qeth_card *card)
1741 {
1742 struct qeth_cmd_buffer *iob;
1743 struct qeth_ipa_cmd *cmd;
1744 struct _qeth_sbp_cbctl cbctl;
1745
1746 QETH_CARD_TEXT(card, 2, "brqsuppo");
1747 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1748 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1749 cmd->data.sbp.hdr.cmdlength =
1750 sizeof(struct qeth_ipacmd_sbp_hdr) +
1751 sizeof(struct qeth_sbp_query_cmds_supp);
1752 cmd->data.sbp.hdr.command_code =
1753 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1754 cmd->data.sbp.hdr.used_total = 1;
1755 cmd->data.sbp.hdr.seq_no = 1;
1756 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1757 (void *)&cbctl) ||
1758 qeth_bridgeport_makerc(card, &cbctl,
1759 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1760 /* non-zero makerc signifies failure, and produce messages */
1761 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1762 return;
1763 }
1764 card->options.sbp.supported_funcs = cbctl.data.supported;
1765 }
1766
qeth_bridgeport_query_ports_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1767 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1768 struct qeth_reply *reply, unsigned long data)
1769 {
1770 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1771 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1772 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1773
1774 QETH_CARD_TEXT(card, 2, "brqprtcb");
1775 cbctl->ipa_rc = cmd->hdr.return_code;
1776 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1777 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1778 return 0;
1779 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1780 cbctl->cmd_rc = 0xffff;
1781 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1782 return 0;
1783 }
1784 /* first entry contains the state of the local port */
1785 if (qports->num_entries > 0) {
1786 if (cbctl->data.qports.role)
1787 *cbctl->data.qports.role = qports->entry[0].role;
1788 if (cbctl->data.qports.state)
1789 *cbctl->data.qports.state = qports->entry[0].state;
1790 }
1791 return 0;
1792 }
1793
1794 /**
1795 * qeth_bridgeport_query_ports() - query local bridgeport status.
1796 * @card: qeth_card structure pointer.
1797 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1798 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1799 *
1800 * Returns negative errno-compatible error indication or 0 on success.
1801 *
1802 * 'role' and 'state' are not updated in case of hardware operation failure.
1803 */
qeth_bridgeport_query_ports(struct qeth_card * card,enum qeth_sbp_roles * role,enum qeth_sbp_states * state)1804 int qeth_bridgeport_query_ports(struct qeth_card *card,
1805 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1806 {
1807 int rc = 0;
1808 struct qeth_cmd_buffer *iob;
1809 struct qeth_ipa_cmd *cmd;
1810 struct _qeth_sbp_cbctl cbctl = {
1811 .data = {
1812 .qports = {
1813 .role = role,
1814 .state = state,
1815 },
1816 },
1817 };
1818
1819 QETH_CARD_TEXT(card, 2, "brqports");
1820 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1821 return -EOPNOTSUPP;
1822 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1823 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1824 cmd->data.sbp.hdr.cmdlength =
1825 sizeof(struct qeth_ipacmd_sbp_hdr);
1826 cmd->data.sbp.hdr.command_code =
1827 IPA_SBP_QUERY_BRIDGE_PORTS;
1828 cmd->data.sbp.hdr.used_total = 1;
1829 cmd->data.sbp.hdr.seq_no = 1;
1830 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1831 (void *)&cbctl);
1832 if (rc)
1833 return rc;
1834 rc = qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1835 if (rc)
1836 return rc;
1837 return 0;
1838 }
1839 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1840
qeth_bridgeport_set_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1841 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1842 struct qeth_reply *reply, unsigned long data)
1843 {
1844 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1845 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1846 QETH_CARD_TEXT(card, 2, "brsetrcb");
1847 cbctl->ipa_rc = cmd->hdr.return_code;
1848 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1849 return 0;
1850 }
1851
1852 /**
1853 * qeth_bridgeport_setrole() - Assign primary role to the port.
1854 * @card: qeth_card structure pointer.
1855 * @role: Role to assign.
1856 *
1857 * Returns negative errno-compatible error indication or 0 on success.
1858 */
qeth_bridgeport_setrole(struct qeth_card * card,enum qeth_sbp_roles role)1859 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1860 {
1861 int rc = 0;
1862 int cmdlength;
1863 struct qeth_cmd_buffer *iob;
1864 struct qeth_ipa_cmd *cmd;
1865 struct _qeth_sbp_cbctl cbctl;
1866 enum qeth_ipa_sbp_cmd setcmd;
1867
1868 QETH_CARD_TEXT(card, 2, "brsetrol");
1869 switch (role) {
1870 case QETH_SBP_ROLE_NONE:
1871 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1872 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1873 sizeof(struct qeth_sbp_reset_role);
1874 break;
1875 case QETH_SBP_ROLE_PRIMARY:
1876 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1877 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1878 sizeof(struct qeth_sbp_set_primary);
1879 break;
1880 case QETH_SBP_ROLE_SECONDARY:
1881 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1882 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1883 sizeof(struct qeth_sbp_set_secondary);
1884 break;
1885 default:
1886 return -EINVAL;
1887 }
1888 if (!(card->options.sbp.supported_funcs & setcmd))
1889 return -EOPNOTSUPP;
1890 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1891 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1892 cmd->data.sbp.hdr.cmdlength = cmdlength;
1893 cmd->data.sbp.hdr.command_code = setcmd;
1894 cmd->data.sbp.hdr.used_total = 1;
1895 cmd->data.sbp.hdr.seq_no = 1;
1896 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1897 (void *)&cbctl);
1898 if (rc)
1899 return rc;
1900 rc = qeth_bridgeport_makerc(card, &cbctl, setcmd);
1901 return rc;
1902 }
1903
1904 /**
1905 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1906 * @card: qeth_card structure pointer, for debug messages.
1907 *
1908 * Returns negative errno-compatible error indication or 0 on success.
1909 */
qeth_anset_makerc(struct qeth_card * card,int pnso_rc,u16 response)1910 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1911 {
1912 int rc;
1913
1914 if (pnso_rc == 0)
1915 switch (response) {
1916 case 0x0001:
1917 rc = 0;
1918 break;
1919 case 0x0004:
1920 case 0x0100:
1921 case 0x0106:
1922 rc = -ENOSYS;
1923 dev_err(&card->gdev->dev,
1924 "Setting address notification failed\n");
1925 break;
1926 case 0x0107:
1927 rc = -EAGAIN;
1928 break;
1929 default:
1930 rc = -EIO;
1931 }
1932 else
1933 rc = -EIO;
1934
1935 if (rc) {
1936 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1937 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1938 }
1939 return rc;
1940 }
1941
qeth_bridgeport_an_set_cb(void * priv,enum qdio_brinfo_entry_type type,void * entry)1942 static void qeth_bridgeport_an_set_cb(void *priv,
1943 enum qdio_brinfo_entry_type type, void *entry)
1944 {
1945 struct qeth_card *card = (struct qeth_card *)priv;
1946 struct qdio_brinfo_entry_l2 *l2entry;
1947 u8 code;
1948
1949 if (type != l2_addr_lnid) {
1950 WARN_ON_ONCE(1);
1951 return;
1952 }
1953
1954 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1955 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1956 if (l2entry->addr_lnid.lnid)
1957 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1958 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1959 (struct net_if_token *)&l2entry->nit,
1960 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1961 }
1962
1963 /**
1964 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1965 * @card: qeth_card structure pointer.
1966 * @enable: 0 - disable, non-zero - enable notifications
1967 *
1968 * Returns negative errno-compatible error indication or 0 on success.
1969 *
1970 * On enable, emits a series of address notifications udev events for all
1971 * currently registered hosts.
1972 */
qeth_bridgeport_an_set(struct qeth_card * card,int enable)1973 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1974 {
1975 int rc;
1976 u16 response;
1977 struct ccw_device *ddev;
1978 struct subchannel_id schid;
1979
1980 if (!card)
1981 return -EINVAL;
1982 if (!card->options.sbp.supported_funcs)
1983 return -EOPNOTSUPP;
1984 ddev = CARD_DDEV(card);
1985 ccw_device_get_schid(ddev, &schid);
1986
1987 if (enable) {
1988 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1989 rc = qdio_pnso_brinfo(schid, 1, &response,
1990 qeth_bridgeport_an_set_cb, card);
1991 } else
1992 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
1993 return qeth_anset_makerc(card, rc, response);
1994 }
1995 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
1996
1997 module_init(qeth_l2_init);
1998 module_exit(qeth_l2_exit);
1999 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2000 MODULE_DESCRIPTION("qeth layer 2 discipline");
2001 MODULE_LICENSE("GPL");
2002