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 #include <linux/hash.h>
23 #include <linux/hashtable.h>
24 #include <linux/string.h>
25 #include "qeth_core.h"
26 #include "qeth_l2.h"
27
28 static int qeth_l2_set_offline(struct ccwgroup_device *);
29 static int qeth_l2_stop(struct net_device *);
30 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
31 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
32 enum qeth_ipa_cmds);
33 static void qeth_l2_set_rx_mode(struct net_device *);
34 static int qeth_l2_recover(void *);
35 static void qeth_bridgeport_query_support(struct qeth_card *card);
36 static void qeth_bridge_state_change(struct qeth_card *card,
37 struct qeth_ipa_cmd *cmd);
38 static void qeth_bridge_host_event(struct qeth_card *card,
39 struct qeth_ipa_cmd *cmd);
40
qeth_l2_do_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)41 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
42 {
43 struct qeth_card *card = dev->ml_priv;
44 struct mii_ioctl_data *mii_data;
45 int rc = 0;
46
47 if (!card)
48 return -ENODEV;
49
50 if (!qeth_card_hw_is_reachable(card))
51 return -ENODEV;
52
53 if (card->info.type == QETH_CARD_TYPE_OSN)
54 return -EPERM;
55
56 switch (cmd) {
57 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
58 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
59 break;
60 case SIOC_QETH_GET_CARD_TYPE:
61 if ((card->info.type == QETH_CARD_TYPE_OSD ||
62 card->info.type == QETH_CARD_TYPE_OSM ||
63 card->info.type == QETH_CARD_TYPE_OSX) &&
64 !card->info.guestlan)
65 return 1;
66 return 0;
67 break;
68 case SIOCGMIIPHY:
69 mii_data = if_mii(rq);
70 mii_data->phy_id = 0;
71 break;
72 case SIOCGMIIREG:
73 mii_data = if_mii(rq);
74 if (mii_data->phy_id != 0)
75 rc = -EINVAL;
76 else
77 mii_data->val_out = qeth_mdio_read(dev,
78 mii_data->phy_id, mii_data->reg_num);
79 break;
80 case SIOC_QETH_QUERY_OAT:
81 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
82 break;
83 default:
84 rc = -EOPNOTSUPP;
85 }
86 if (rc)
87 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
88 return rc;
89 }
90
qeth_l2_verify_dev(struct net_device * dev)91 static int qeth_l2_verify_dev(struct net_device *dev)
92 {
93 struct qeth_card *card;
94 unsigned long flags;
95 int rc = 0;
96
97 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
98 list_for_each_entry(card, &qeth_core_card_list.list, list) {
99 if (card->dev == dev) {
100 rc = QETH_REAL_CARD;
101 break;
102 }
103 }
104 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
105
106 return rc;
107 }
108
qeth_l2_netdev_by_devno(unsigned char * read_dev_no)109 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
110 {
111 struct qeth_card *card;
112 struct net_device *ndev;
113 __u16 temp_dev_no;
114 unsigned long flags;
115 struct ccw_dev_id read_devid;
116
117 ndev = NULL;
118 memcpy(&temp_dev_no, read_dev_no, 2);
119 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
120 list_for_each_entry(card, &qeth_core_card_list.list, list) {
121 ccw_device_get_id(CARD_RDEV(card), &read_devid);
122 if (read_devid.devno == temp_dev_no) {
123 ndev = card->dev;
124 break;
125 }
126 }
127 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
128 return ndev;
129 }
130
qeth_setdel_makerc(struct qeth_card * card,int retcode)131 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
132 {
133 int rc;
134
135 if (retcode)
136 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
137 switch (retcode) {
138 case IPA_RC_SUCCESS:
139 rc = 0;
140 break;
141 case IPA_RC_L2_UNSUPPORTED_CMD:
142 rc = -EOPNOTSUPP;
143 break;
144 case IPA_RC_L2_ADDR_TABLE_FULL:
145 rc = -ENOSPC;
146 break;
147 case IPA_RC_L2_DUP_MAC:
148 case IPA_RC_L2_DUP_LAYER3_MAC:
149 rc = -EEXIST;
150 break;
151 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
152 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
153 rc = -EPERM;
154 break;
155 case IPA_RC_L2_MAC_NOT_FOUND:
156 rc = -ENOENT;
157 break;
158 case -ENOMEM:
159 rc = -ENOMEM;
160 break;
161 default:
162 rc = -EIO;
163 break;
164 }
165 return rc;
166 }
167
qeth_l2_send_setgroupmac(struct qeth_card * card,__u8 * mac)168 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
169 {
170 int rc;
171
172 QETH_CARD_TEXT(card, 2, "L2Sgmac");
173 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
174 IPA_CMD_SETGMAC));
175 if (rc == -EEXIST)
176 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
177 mac, QETH_CARD_IFNAME(card));
178 else if (rc)
179 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
180 mac, QETH_CARD_IFNAME(card), rc);
181 return rc;
182 }
183
qeth_l2_send_delgroupmac(struct qeth_card * card,__u8 * mac)184 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
185 {
186 int rc;
187
188 QETH_CARD_TEXT(card, 2, "L2Dgmac");
189 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
190 IPA_CMD_DELGMAC));
191 if (rc)
192 QETH_DBF_MESSAGE(2,
193 "Could not delete group MAC %pM on %s: %d\n",
194 mac, QETH_CARD_IFNAME(card), rc);
195 return rc;
196 }
197
qeth_l2_mac_hash(const u8 * addr)198 static inline u32 qeth_l2_mac_hash(const u8 *addr)
199 {
200 return get_unaligned((u32 *)(&addr[2]));
201 }
202
qeth_l2_write_mac(struct qeth_card * card,struct qeth_mac * mac)203 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
204 {
205
206 int rc;
207
208 if (mac->is_uc) {
209 rc = qeth_setdel_makerc(card,
210 qeth_l2_send_setdelmac(card, mac->mac_addr,
211 IPA_CMD_SETVMAC));
212 } else {
213 rc = qeth_setdel_makerc(card,
214 qeth_l2_send_setgroupmac(card, mac->mac_addr));
215 }
216 return rc;
217 }
218
qeth_l2_del_all_macs(struct qeth_card * card,int del)219 static void qeth_l2_del_all_macs(struct qeth_card *card, int del)
220 {
221 struct qeth_mac *mac;
222 struct hlist_node *tmp;
223 int i;
224
225 spin_lock_bh(&card->mclock);
226 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
227 if (del) {
228 if (mac->is_uc)
229 qeth_l2_send_setdelmac(card, mac->mac_addr,
230 IPA_CMD_DELVMAC);
231 else
232 qeth_l2_send_delgroupmac(card, mac->mac_addr);
233 }
234 hash_del(&mac->hnode);
235 kfree(mac);
236 }
237 spin_unlock_bh(&card->mclock);
238 }
239
qeth_l2_get_cast_type(struct qeth_card * card,struct sk_buff * skb)240 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
241 struct sk_buff *skb)
242 {
243 if (card->info.type == QETH_CARD_TYPE_OSN)
244 return RTN_UNSPEC;
245 if (is_broadcast_ether_addr(skb->data))
246 return RTN_BROADCAST;
247 if (is_multicast_ether_addr(skb->data))
248 return RTN_MULTICAST;
249 return RTN_UNSPEC;
250 }
251
qeth_l2_hdr_csum(struct qeth_card * card,struct qeth_hdr * hdr,struct sk_buff * skb)252 static inline void qeth_l2_hdr_csum(struct qeth_card *card,
253 struct qeth_hdr *hdr, struct sk_buff *skb)
254 {
255 struct iphdr *iph = ip_hdr(skb);
256
257 /* tcph->check contains already the pseudo hdr checksum
258 * so just set the header flags
259 */
260 if (iph->protocol == IPPROTO_UDP)
261 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
262 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
263 QETH_HDR_EXT_CSUM_HDR_REQ;
264 iph->check = 0;
265 if (card->options.performance_stats)
266 card->perf_stats.tx_csum++;
267 }
268
qeth_l2_fill_header(struct qeth_card * card,struct qeth_hdr * hdr,struct sk_buff * skb,int cast_type)269 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
270 struct sk_buff *skb, int cast_type)
271 {
272 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
273
274 memset(hdr, 0, sizeof(struct qeth_hdr));
275 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
276
277 /* set byte byte 3 to casting flags */
278 if (cast_type == RTN_MULTICAST)
279 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
280 else if (cast_type == RTN_BROADCAST)
281 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
282 else
283 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
284
285 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
286 /* VSWITCH relies on the VLAN
287 * information to be present in
288 * the QDIO header */
289 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
290 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
291 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
292 }
293 }
294
qeth_l2_send_setdelvlan_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)295 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
296 struct qeth_reply *reply, unsigned long data)
297 {
298 struct qeth_ipa_cmd *cmd;
299
300 QETH_CARD_TEXT(card, 2, "L2sdvcb");
301 cmd = (struct qeth_ipa_cmd *) data;
302 if (cmd->hdr.return_code) {
303 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
304 "Continuing\n", cmd->data.setdelvlan.vlan_id,
305 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
306 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
307 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
308 }
309 return 0;
310 }
311
qeth_l2_send_setdelvlan(struct qeth_card * card,__u16 i,enum qeth_ipa_cmds ipacmd)312 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
313 enum qeth_ipa_cmds ipacmd)
314 {
315 struct qeth_ipa_cmd *cmd;
316 struct qeth_cmd_buffer *iob;
317
318 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
319 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
320 if (!iob)
321 return -ENOMEM;
322 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
323 cmd->data.setdelvlan.vlan_id = i;
324 return qeth_send_ipa_cmd(card, iob,
325 qeth_l2_send_setdelvlan_cb, NULL);
326 }
327
qeth_l2_process_vlans(struct qeth_card * card)328 static void qeth_l2_process_vlans(struct qeth_card *card)
329 {
330 struct qeth_vlan_vid *id;
331 QETH_CARD_TEXT(card, 3, "L2prcvln");
332 spin_lock_bh(&card->vlanlock);
333 list_for_each_entry(id, &card->vid_list, list) {
334 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
335 }
336 spin_unlock_bh(&card->vlanlock);
337 }
338
qeth_l2_vlan_rx_add_vid(struct net_device * dev,__be16 proto,u16 vid)339 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
340 __be16 proto, u16 vid)
341 {
342 struct qeth_card *card = dev->ml_priv;
343 struct qeth_vlan_vid *id;
344 int rc;
345
346 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
347 if (!vid)
348 return 0;
349 if (card->info.type == QETH_CARD_TYPE_OSM) {
350 QETH_CARD_TEXT(card, 3, "aidOSM");
351 return 0;
352 }
353 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
354 QETH_CARD_TEXT(card, 3, "aidREC");
355 return 0;
356 }
357 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
358 if (id) {
359 id->vid = vid;
360 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
361 if (rc) {
362 kfree(id);
363 return rc;
364 }
365 spin_lock_bh(&card->vlanlock);
366 list_add_tail(&id->list, &card->vid_list);
367 spin_unlock_bh(&card->vlanlock);
368 } else {
369 return -ENOMEM;
370 }
371 return 0;
372 }
373
qeth_l2_vlan_rx_kill_vid(struct net_device * dev,__be16 proto,u16 vid)374 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
375 __be16 proto, u16 vid)
376 {
377 struct qeth_vlan_vid *id, *tmpid = NULL;
378 struct qeth_card *card = dev->ml_priv;
379 int rc = 0;
380
381 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
382 if (card->info.type == QETH_CARD_TYPE_OSM) {
383 QETH_CARD_TEXT(card, 3, "kidOSM");
384 return 0;
385 }
386 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
387 QETH_CARD_TEXT(card, 3, "kidREC");
388 return 0;
389 }
390 spin_lock_bh(&card->vlanlock);
391 list_for_each_entry(id, &card->vid_list, list) {
392 if (id->vid == vid) {
393 list_del(&id->list);
394 tmpid = id;
395 break;
396 }
397 }
398 spin_unlock_bh(&card->vlanlock);
399 if (tmpid) {
400 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
401 kfree(tmpid);
402 }
403 qeth_l2_set_rx_mode(card->dev);
404 return rc;
405 }
406
qeth_l2_fix_features(struct net_device * dev,netdev_features_t features)407 static netdev_features_t qeth_l2_fix_features(struct net_device *dev,
408 netdev_features_t features)
409 {
410 struct qeth_card *card = dev->ml_priv;
411
412 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
413 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
414 features &= ~NETIF_F_IP_CSUM;
415 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
416 features &= ~NETIF_F_RXCSUM;
417 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
418 return features;
419 }
420
qeth_l2_set_features(struct net_device * dev,netdev_features_t features)421 static int qeth_l2_set_features(struct net_device *dev,
422 netdev_features_t features)
423 {
424 struct qeth_card *card = dev->ml_priv;
425 netdev_features_t changed = dev->features ^ features;
426
427 QETH_DBF_TEXT(SETUP, 2, "setfeat");
428 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
429
430 if (card->state == CARD_STATE_DOWN ||
431 card->state == CARD_STATE_RECOVER)
432 return 0;
433
434 if (!(changed & NETIF_F_RXCSUM))
435 return 0;
436 return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
437 }
438
qeth_l2_stop_card(struct qeth_card * card,int recovery_mode)439 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
440 {
441 QETH_DBF_TEXT(SETUP , 2, "stopcard");
442 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
443
444 qeth_set_allowed_threads(card, 0, 1);
445 if (card->read.state == CH_STATE_UP &&
446 card->write.state == CH_STATE_UP &&
447 (card->state == CARD_STATE_UP)) {
448 if (recovery_mode &&
449 card->info.type != QETH_CARD_TYPE_OSN) {
450 qeth_l2_stop(card->dev);
451 } else {
452 rtnl_lock();
453 dev_close(card->dev);
454 rtnl_unlock();
455 }
456 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
457 card->state = CARD_STATE_SOFTSETUP;
458 }
459 if (card->state == CARD_STATE_SOFTSETUP) {
460 qeth_l2_del_all_macs(card, 0);
461 qeth_clear_ipacmd_list(card);
462 card->state = CARD_STATE_HARDSETUP;
463 }
464 if (card->state == CARD_STATE_HARDSETUP) {
465 qeth_qdio_clear_card(card, 0);
466 qeth_clear_qdio_buffers(card);
467 qeth_clear_working_pool_list(card);
468 card->state = CARD_STATE_DOWN;
469 }
470 if (card->state == CARD_STATE_DOWN) {
471 qeth_clear_cmd_buffers(&card->read);
472 qeth_clear_cmd_buffers(&card->write);
473 }
474 }
475
qeth_l2_process_inbound_buffer(struct qeth_card * card,int budget,int * done)476 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
477 int budget, int *done)
478 {
479 int work_done = 0;
480 struct sk_buff *skb;
481 struct qeth_hdr *hdr;
482 unsigned int len;
483
484 *done = 0;
485 WARN_ON_ONCE(!budget);
486 while (budget) {
487 skb = qeth_core_get_next_skb(card,
488 &card->qdio.in_q->bufs[card->rx.b_index],
489 &card->rx.b_element, &card->rx.e_offset, &hdr);
490 if (!skb) {
491 *done = 1;
492 break;
493 }
494 skb->dev = card->dev;
495 switch (hdr->hdr.l2.id) {
496 case QETH_HEADER_TYPE_LAYER2:
497 skb->pkt_type = PACKET_HOST;
498 skb->protocol = eth_type_trans(skb, skb->dev);
499 if ((card->dev->features & NETIF_F_RXCSUM)
500 && ((hdr->hdr.l2.flags[1] &
501 (QETH_HDR_EXT_CSUM_HDR_REQ |
502 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
503 (QETH_HDR_EXT_CSUM_HDR_REQ |
504 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
505 skb->ip_summed = CHECKSUM_UNNECESSARY;
506 else
507 skb->ip_summed = CHECKSUM_NONE;
508 if (skb->protocol == htons(ETH_P_802_2))
509 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
510 len = skb->len;
511 napi_gro_receive(&card->napi, skb);
512 break;
513 case QETH_HEADER_TYPE_OSN:
514 if (card->info.type == QETH_CARD_TYPE_OSN) {
515 skb_push(skb, sizeof(struct qeth_hdr));
516 skb_copy_to_linear_data(skb, hdr,
517 sizeof(struct qeth_hdr));
518 len = skb->len;
519 card->osn_info.data_cb(skb);
520 break;
521 }
522 /* else unknown */
523 default:
524 dev_kfree_skb_any(skb);
525 QETH_CARD_TEXT(card, 3, "inbunkno");
526 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
527 continue;
528 }
529 work_done++;
530 budget--;
531 card->stats.rx_packets++;
532 card->stats.rx_bytes += len;
533 }
534 return work_done;
535 }
536
qeth_l2_poll(struct napi_struct * napi,int budget)537 static int qeth_l2_poll(struct napi_struct *napi, int budget)
538 {
539 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
540 int work_done = 0;
541 struct qeth_qdio_buffer *buffer;
542 int done;
543 int new_budget = budget;
544
545 if (card->options.performance_stats) {
546 card->perf_stats.inbound_cnt++;
547 card->perf_stats.inbound_start_time = qeth_get_micros();
548 }
549
550 while (1) {
551 if (!card->rx.b_count) {
552 card->rx.qdio_err = 0;
553 card->rx.b_count = qdio_get_next_buffers(
554 card->data.ccwdev, 0, &card->rx.b_index,
555 &card->rx.qdio_err);
556 if (card->rx.b_count <= 0) {
557 card->rx.b_count = 0;
558 break;
559 }
560 card->rx.b_element =
561 &card->qdio.in_q->bufs[card->rx.b_index]
562 .buffer->element[0];
563 card->rx.e_offset = 0;
564 }
565
566 while (card->rx.b_count) {
567 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
568 if (!(card->rx.qdio_err &&
569 qeth_check_qdio_errors(card, buffer->buffer,
570 card->rx.qdio_err, "qinerr")))
571 work_done += qeth_l2_process_inbound_buffer(
572 card, new_budget, &done);
573 else
574 done = 1;
575
576 if (done) {
577 if (card->options.performance_stats)
578 card->perf_stats.bufs_rec++;
579 qeth_put_buffer_pool_entry(card,
580 buffer->pool_entry);
581 qeth_queue_input_buffer(card, card->rx.b_index);
582 card->rx.b_count--;
583 if (card->rx.b_count) {
584 card->rx.b_index =
585 (card->rx.b_index + 1) %
586 QDIO_MAX_BUFFERS_PER_Q;
587 card->rx.b_element =
588 &card->qdio.in_q
589 ->bufs[card->rx.b_index]
590 .buffer->element[0];
591 card->rx.e_offset = 0;
592 }
593 }
594
595 if (work_done >= budget)
596 goto out;
597 else
598 new_budget = budget - work_done;
599 }
600 }
601
602 napi_complete(napi);
603 if (qdio_start_irq(card->data.ccwdev, 0))
604 napi_schedule(&card->napi);
605 out:
606 if (card->options.performance_stats)
607 card->perf_stats.inbound_time += qeth_get_micros() -
608 card->perf_stats.inbound_start_time;
609 return work_done;
610 }
611
qeth_l2_send_setdelmac(struct qeth_card * card,__u8 * mac,enum qeth_ipa_cmds ipacmd)612 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
613 enum qeth_ipa_cmds ipacmd)
614 {
615 struct qeth_ipa_cmd *cmd;
616 struct qeth_cmd_buffer *iob;
617
618 QETH_CARD_TEXT(card, 2, "L2sdmac");
619 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
620 if (!iob)
621 return -ENOMEM;
622 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
623 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
624 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
625 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
626 }
627
qeth_l2_send_setmac(struct qeth_card * card,__u8 * mac)628 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
629 {
630 int rc;
631
632 QETH_CARD_TEXT(card, 2, "L2Setmac");
633 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
634 IPA_CMD_SETVMAC));
635 if (rc == 0) {
636 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
637 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
638 dev_info(&card->gdev->dev,
639 "MAC address %pM successfully registered on device %s\n",
640 card->dev->dev_addr, card->dev->name);
641 } else {
642 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
643 switch (rc) {
644 case -EEXIST:
645 dev_warn(&card->gdev->dev,
646 "MAC address %pM already exists\n", mac);
647 break;
648 case -EPERM:
649 dev_warn(&card->gdev->dev,
650 "MAC address %pM is not authorized\n", mac);
651 break;
652 }
653 }
654 return rc;
655 }
656
qeth_l2_send_delmac(struct qeth_card * card,__u8 * mac)657 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
658 {
659 int rc;
660
661 QETH_CARD_TEXT(card, 2, "L2Delmac");
662 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
663 return 0;
664 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
665 IPA_CMD_DELVMAC));
666 if (rc == 0)
667 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
668 return rc;
669 }
670
qeth_l2_request_initial_mac(struct qeth_card * card)671 static int qeth_l2_request_initial_mac(struct qeth_card *card)
672 {
673 int rc = 0;
674 char vendor_pre[] = {0x02, 0x00, 0x00};
675
676 QETH_DBF_TEXT(SETUP, 2, "doL2init");
677 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
678
679 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
680 rc = qeth_query_setadapterparms(card);
681 if (rc) {
682 QETH_DBF_MESSAGE(2, "could not query adapter "
683 "parameters on device %s: x%x\n",
684 CARD_BUS_ID(card), rc);
685 }
686 }
687
688 if (card->info.type == QETH_CARD_TYPE_IQD ||
689 card->info.type == QETH_CARD_TYPE_OSM ||
690 card->info.type == QETH_CARD_TYPE_OSX ||
691 card->info.guestlan) {
692 rc = qeth_setadpparms_change_macaddr(card);
693 if (rc) {
694 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
695 "device %s: x%x\n", CARD_BUS_ID(card), rc);
696 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
697 return rc;
698 }
699 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
700 } else {
701 eth_random_addr(card->dev->dev_addr);
702 memcpy(card->dev->dev_addr, vendor_pre, 3);
703 }
704 return 0;
705 }
706
qeth_l2_set_mac_address(struct net_device * dev,void * p)707 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
708 {
709 struct sockaddr *addr = p;
710 struct qeth_card *card = dev->ml_priv;
711 int rc = 0;
712
713 QETH_CARD_TEXT(card, 3, "setmac");
714
715 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
716 QETH_CARD_TEXT(card, 3, "setmcINV");
717 return -EOPNOTSUPP;
718 }
719
720 if (card->info.type == QETH_CARD_TYPE_OSN ||
721 card->info.type == QETH_CARD_TYPE_OSM ||
722 card->info.type == QETH_CARD_TYPE_OSX) {
723 QETH_CARD_TEXT(card, 3, "setmcTYP");
724 return -EOPNOTSUPP;
725 }
726 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
727 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
728 QETH_CARD_TEXT(card, 3, "setmcREC");
729 return -ERESTARTSYS;
730 }
731 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
732 if (!rc || (rc == -ENOENT))
733 rc = qeth_l2_send_setmac(card, addr->sa_data);
734 return rc ? -EINVAL : 0;
735 }
736
qeth_promisc_to_bridge(struct qeth_card * card)737 static void qeth_promisc_to_bridge(struct qeth_card *card)
738 {
739 struct net_device *dev = card->dev;
740 enum qeth_ipa_promisc_modes promisc_mode;
741 int role;
742 int rc;
743
744 QETH_CARD_TEXT(card, 3, "pmisc2br");
745
746 if (!card->options.sbp.reflect_promisc)
747 return;
748 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
749 : SET_PROMISC_MODE_OFF;
750 if (promisc_mode == card->info.promisc_mode)
751 return;
752
753 if (promisc_mode == SET_PROMISC_MODE_ON) {
754 if (card->options.sbp.reflect_promisc_primary)
755 role = QETH_SBP_ROLE_PRIMARY;
756 else
757 role = QETH_SBP_ROLE_SECONDARY;
758 } else
759 role = QETH_SBP_ROLE_NONE;
760
761 rc = qeth_bridgeport_setrole(card, role);
762 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
763 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
764 if (!rc) {
765 card->options.sbp.role = role;
766 card->info.promisc_mode = promisc_mode;
767 }
768
769 }
770 /* New MAC address is added to the hash table and marked to be written on card
771 * only if there is not in the hash table storage already
772 *
773 */
774 static void
qeth_l2_add_mac(struct qeth_card * card,struct netdev_hw_addr * ha,u8 is_uc)775 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
776 {
777 struct qeth_mac *mac;
778
779 hash_for_each_possible(card->mac_htable, mac, hnode,
780 qeth_l2_mac_hash(ha->addr)) {
781 if (is_uc == mac->is_uc &&
782 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
783 mac->disp_flag = QETH_DISP_MAC_DO_NOTHING;
784 return;
785 }
786 }
787
788 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
789
790 if (!mac)
791 return;
792
793 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
794 mac->is_uc = is_uc;
795 mac->disp_flag = QETH_DISP_MAC_ADD;
796
797 hash_add(card->mac_htable, &mac->hnode,
798 qeth_l2_mac_hash(mac->mac_addr));
799
800 }
801
qeth_l2_set_rx_mode(struct net_device * dev)802 static void qeth_l2_set_rx_mode(struct net_device *dev)
803 {
804 struct qeth_card *card = dev->ml_priv;
805 struct netdev_hw_addr *ha;
806 struct qeth_mac *mac;
807 struct hlist_node *tmp;
808 int i;
809 int rc;
810
811 if (card->info.type == QETH_CARD_TYPE_OSN)
812 return;
813
814 QETH_CARD_TEXT(card, 3, "setmulti");
815 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
816 (card->state != CARD_STATE_UP))
817 return;
818
819 spin_lock_bh(&card->mclock);
820
821 netdev_for_each_mc_addr(ha, dev)
822 qeth_l2_add_mac(card, ha, 0);
823
824 netdev_for_each_uc_addr(ha, dev)
825 qeth_l2_add_mac(card, ha, 1);
826
827 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
828 if (mac->disp_flag == QETH_DISP_MAC_DELETE) {
829 if (!mac->is_uc)
830 rc = qeth_l2_send_delgroupmac(card,
831 mac->mac_addr);
832 else {
833 rc = qeth_l2_send_setdelmac(card, mac->mac_addr,
834 IPA_CMD_DELVMAC);
835 }
836
837 hash_del(&mac->hnode);
838 kfree(mac);
839
840 } else if (mac->disp_flag == QETH_DISP_MAC_ADD) {
841 rc = qeth_l2_write_mac(card, mac);
842 if (rc) {
843 hash_del(&mac->hnode);
844 kfree(mac);
845 } else
846 mac->disp_flag = QETH_DISP_MAC_DELETE;
847 } else
848 mac->disp_flag = QETH_DISP_MAC_DELETE;
849 }
850
851 spin_unlock_bh(&card->mclock);
852
853 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
854 qeth_setadp_promisc_mode(card);
855 else
856 qeth_promisc_to_bridge(card);
857 }
858
qeth_l2_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)859 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
860 {
861 int rc;
862 struct qeth_hdr *hdr = NULL;
863 int elements = 0;
864 struct qeth_card *card = dev->ml_priv;
865 struct sk_buff *new_skb = skb;
866 int cast_type = qeth_l2_get_cast_type(card, skb);
867 struct qeth_qdio_out_q *queue;
868 int tx_bytes = skb->len;
869 int data_offset = -1;
870 int elements_needed = 0;
871 int hd_len = 0;
872
873 if (card->qdio.do_prio_queueing || (cast_type &&
874 card->info.is_multicast_different))
875 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
876 qeth_get_ip_version(skb), cast_type)];
877 else
878 queue = card->qdio.out_qs[card->qdio.default_out_queue];
879
880 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
881 card->stats.tx_carrier_errors++;
882 goto tx_drop;
883 }
884
885 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
886 (skb->protocol == htons(ETH_P_IPV6)))
887 goto tx_drop;
888
889 if (card->options.performance_stats) {
890 card->perf_stats.outbound_cnt++;
891 card->perf_stats.outbound_start_time = qeth_get_micros();
892 }
893 netif_stop_queue(dev);
894
895 if (card->info.type == QETH_CARD_TYPE_OSN)
896 hdr = (struct qeth_hdr *)skb->data;
897 else {
898 if (card->info.type == QETH_CARD_TYPE_IQD) {
899 new_skb = skb;
900 data_offset = ETH_HLEN;
901 hd_len = ETH_HLEN;
902 hdr = kmem_cache_alloc(qeth_core_header_cache,
903 GFP_ATOMIC);
904 if (!hdr)
905 goto tx_drop;
906 elements_needed++;
907 skb_reset_mac_header(new_skb);
908 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
909 hdr->hdr.l2.pkt_length = new_skb->len;
910 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
911 skb_mac_header(new_skb), ETH_HLEN);
912 } else {
913 /* create a clone with writeable headroom */
914 new_skb = skb_realloc_headroom(skb,
915 sizeof(struct qeth_hdr));
916 if (!new_skb)
917 goto tx_drop;
918 hdr = (struct qeth_hdr *)skb_push(new_skb,
919 sizeof(struct qeth_hdr));
920 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
921 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
922 if (new_skb->ip_summed == CHECKSUM_PARTIAL)
923 qeth_l2_hdr_csum(card, hdr, new_skb);
924 }
925 }
926
927 elements = qeth_get_elements_no(card, new_skb, elements_needed);
928 if (!elements) {
929 if (data_offset >= 0)
930 kmem_cache_free(qeth_core_header_cache, hdr);
931 goto tx_drop;
932 }
933
934 if (card->info.type != QETH_CARD_TYPE_IQD) {
935 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
936 sizeof(struct qeth_hdr_layer2)))
937 goto tx_drop;
938 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
939 elements);
940 } else
941 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
942 elements, data_offset, hd_len);
943 if (!rc) {
944 card->stats.tx_packets++;
945 card->stats.tx_bytes += tx_bytes;
946 if (new_skb != skb)
947 dev_kfree_skb_any(skb);
948 rc = NETDEV_TX_OK;
949 } else {
950 if (data_offset >= 0)
951 kmem_cache_free(qeth_core_header_cache, hdr);
952
953 if (rc == -EBUSY) {
954 if (new_skb != skb)
955 dev_kfree_skb_any(new_skb);
956 return NETDEV_TX_BUSY;
957 } else
958 goto tx_drop;
959 }
960
961 netif_wake_queue(dev);
962 if (card->options.performance_stats)
963 card->perf_stats.outbound_time += qeth_get_micros() -
964 card->perf_stats.outbound_start_time;
965 return rc;
966
967 tx_drop:
968 card->stats.tx_dropped++;
969 card->stats.tx_errors++;
970 if ((new_skb != skb) && new_skb)
971 dev_kfree_skb_any(new_skb);
972 dev_kfree_skb_any(skb);
973 netif_wake_queue(dev);
974 return NETDEV_TX_OK;
975 }
976
__qeth_l2_open(struct net_device * dev)977 static int __qeth_l2_open(struct net_device *dev)
978 {
979 struct qeth_card *card = dev->ml_priv;
980 int rc = 0;
981
982 QETH_CARD_TEXT(card, 4, "qethopen");
983 if (card->state == CARD_STATE_UP)
984 return rc;
985 if (card->state != CARD_STATE_SOFTSETUP)
986 return -ENODEV;
987
988 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
989 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
990 QETH_CARD_TEXT(card, 4, "nomacadr");
991 return -EPERM;
992 }
993 card->data.state = CH_STATE_UP;
994 card->state = CARD_STATE_UP;
995 netif_start_queue(dev);
996
997 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
998 napi_enable(&card->napi);
999 local_bh_disable();
1000 napi_schedule(&card->napi);
1001 /* kick-start the NAPI softirq: */
1002 local_bh_enable();
1003 } else
1004 rc = -EIO;
1005 return rc;
1006 }
1007
qeth_l2_open(struct net_device * dev)1008 static int qeth_l2_open(struct net_device *dev)
1009 {
1010 struct qeth_card *card = dev->ml_priv;
1011
1012 QETH_CARD_TEXT(card, 5, "qethope_");
1013 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1014 QETH_CARD_TEXT(card, 3, "openREC");
1015 return -ERESTARTSYS;
1016 }
1017 return __qeth_l2_open(dev);
1018 }
1019
qeth_l2_stop(struct net_device * dev)1020 static int qeth_l2_stop(struct net_device *dev)
1021 {
1022 struct qeth_card *card = dev->ml_priv;
1023
1024 QETH_CARD_TEXT(card, 4, "qethstop");
1025 netif_tx_disable(dev);
1026 if (card->state == CARD_STATE_UP) {
1027 card->state = CARD_STATE_SOFTSETUP;
1028 napi_disable(&card->napi);
1029 }
1030 return 0;
1031 }
1032
1033 static const struct device_type qeth_l2_devtype = {
1034 .name = "qeth_layer2",
1035 .groups = qeth_l2_attr_groups,
1036 };
1037
qeth_l2_probe_device(struct ccwgroup_device * gdev)1038 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
1039 {
1040 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1041 int rc;
1042
1043 if (gdev->dev.type == &qeth_generic_devtype) {
1044 rc = qeth_l2_create_device_attributes(&gdev->dev);
1045 if (rc)
1046 return rc;
1047 }
1048 INIT_LIST_HEAD(&card->vid_list);
1049 hash_init(card->mac_htable);
1050 card->options.layer2 = 1;
1051 card->info.hwtrap = 0;
1052 return 0;
1053 }
1054
qeth_l2_remove_device(struct ccwgroup_device * cgdev)1055 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
1056 {
1057 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1058
1059 if (cgdev->dev.type == &qeth_generic_devtype)
1060 qeth_l2_remove_device_attributes(&cgdev->dev);
1061 qeth_set_allowed_threads(card, 0, 1);
1062 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1063
1064 if (cgdev->state == CCWGROUP_ONLINE)
1065 qeth_l2_set_offline(cgdev);
1066
1067 if (card->dev) {
1068 unregister_netdev(card->dev);
1069 free_netdev(card->dev);
1070 card->dev = NULL;
1071 }
1072 return;
1073 }
1074
1075 static const struct ethtool_ops qeth_l2_ethtool_ops = {
1076 .get_link = ethtool_op_get_link,
1077 .get_strings = qeth_core_get_strings,
1078 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1079 .get_sset_count = qeth_core_get_sset_count,
1080 .get_drvinfo = qeth_core_get_drvinfo,
1081 .get_settings = qeth_core_ethtool_get_settings,
1082 };
1083
1084 static const struct ethtool_ops qeth_l2_osn_ops = {
1085 .get_strings = qeth_core_get_strings,
1086 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1087 .get_sset_count = qeth_core_get_sset_count,
1088 .get_drvinfo = qeth_core_get_drvinfo,
1089 };
1090
1091 static const struct net_device_ops qeth_l2_netdev_ops = {
1092 .ndo_open = qeth_l2_open,
1093 .ndo_stop = qeth_l2_stop,
1094 .ndo_get_stats = qeth_get_stats,
1095 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1096 .ndo_validate_addr = eth_validate_addr,
1097 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1098 .ndo_do_ioctl = qeth_l2_do_ioctl,
1099 .ndo_set_mac_address = qeth_l2_set_mac_address,
1100 .ndo_change_mtu = qeth_change_mtu,
1101 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1102 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1103 .ndo_tx_timeout = qeth_tx_timeout,
1104 .ndo_fix_features = qeth_l2_fix_features,
1105 .ndo_set_features = qeth_l2_set_features
1106 };
1107
qeth_l2_setup_netdev(struct qeth_card * card)1108 static int qeth_l2_setup_netdev(struct qeth_card *card)
1109 {
1110 switch (card->info.type) {
1111 case QETH_CARD_TYPE_IQD:
1112 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1113 ether_setup);
1114 break;
1115 case QETH_CARD_TYPE_OSN:
1116 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1117 ether_setup);
1118 break;
1119 default:
1120 card->dev = alloc_etherdev(0);
1121 }
1122
1123 if (!card->dev)
1124 return -ENODEV;
1125
1126 card->dev->ml_priv = card;
1127 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
1128 card->dev->mtu = card->info.initial_mtu;
1129 card->dev->netdev_ops = &qeth_l2_netdev_ops;
1130 if (card->info.type == QETH_CARD_TYPE_OSN) {
1131 card->dev->ethtool_ops = &qeth_l2_osn_ops;
1132 card->dev->flags |= IFF_NOARP;
1133 } else {
1134 card->dev->ethtool_ops = &qeth_l2_ethtool_ops;
1135 }
1136 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1137 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1138 card->dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
1139 /* Turn on RX offloading per default */
1140 card->dev->features |= NETIF_F_RXCSUM;
1141 }
1142 card->info.broadcast_capable = 1;
1143 qeth_l2_request_initial_mac(card);
1144 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1145 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1146 netif_carrier_off(card->dev);
1147 return register_netdev(card->dev);
1148 }
1149
qeth_l2_start_ipassists(struct qeth_card * card)1150 static int qeth_l2_start_ipassists(struct qeth_card *card)
1151 {
1152 /* configure isolation level */
1153 if (qeth_set_access_ctrl_online(card, 0))
1154 return -ENODEV;
1155 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
1156 qeth_set_rx_csum(card, 1);
1157 qeth_start_ipa_tx_checksum(card);
1158 return 0;
1159 }
1160
__qeth_l2_set_online(struct ccwgroup_device * gdev,int recovery_mode)1161 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1162 {
1163 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1164 int rc = 0;
1165 enum qeth_card_states recover_flag;
1166
1167 mutex_lock(&card->discipline_mutex);
1168 mutex_lock(&card->conf_mutex);
1169 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1170 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1171
1172 recover_flag = card->state;
1173 rc = qeth_core_hardsetup_card(card);
1174 if (rc) {
1175 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1176 rc = -ENODEV;
1177 goto out_remove;
1178 }
1179 qeth_bridgeport_query_support(card);
1180 if (card->options.sbp.supported_funcs)
1181 dev_info(&card->gdev->dev,
1182 "The device represents a Bridge Capable Port\n");
1183 qeth_trace_features(card);
1184
1185 if (!card->dev && qeth_l2_setup_netdev(card)) {
1186 rc = -ENODEV;
1187 goto out_remove;
1188 }
1189
1190 if (card->info.type != QETH_CARD_TYPE_OSN)
1191 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1192
1193 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1194 if (card->info.hwtrap &&
1195 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1196 card->info.hwtrap = 0;
1197 } else
1198 card->info.hwtrap = 0;
1199
1200 qeth_l2_setup_bridgeport_attrs(card);
1201
1202 card->state = CARD_STATE_HARDSETUP;
1203 memset(&card->rx, 0, sizeof(struct qeth_rx));
1204 qeth_print_status_message(card);
1205
1206 /* softsetup */
1207 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1208
1209 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1210 (card->info.type == QETH_CARD_TYPE_OSX)) {
1211 if (qeth_l2_start_ipassists(card))
1212 goto out_remove;
1213 }
1214
1215 if (card->info.type != QETH_CARD_TYPE_OSN &&
1216 card->info.type != QETH_CARD_TYPE_OSM)
1217 qeth_l2_process_vlans(card);
1218
1219 netif_tx_disable(card->dev);
1220
1221 rc = qeth_init_qdio_queues(card);
1222 if (rc) {
1223 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1224 rc = -ENODEV;
1225 goto out_remove;
1226 }
1227 card->state = CARD_STATE_SOFTSETUP;
1228 if (card->lan_online)
1229 netif_carrier_on(card->dev);
1230 else
1231 netif_carrier_off(card->dev);
1232
1233 qeth_set_allowed_threads(card, 0xffffffff, 0);
1234 if (recover_flag == CARD_STATE_RECOVER) {
1235 if (recovery_mode &&
1236 card->info.type != QETH_CARD_TYPE_OSN) {
1237 __qeth_l2_open(card->dev);
1238 } else {
1239 rtnl_lock();
1240 dev_open(card->dev);
1241 rtnl_unlock();
1242 }
1243 /* this also sets saved unicast addresses */
1244 qeth_l2_set_rx_mode(card->dev);
1245 }
1246 /* let user_space know that device is online */
1247 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1248 mutex_unlock(&card->conf_mutex);
1249 mutex_unlock(&card->discipline_mutex);
1250 return 0;
1251
1252 out_remove:
1253 qeth_l2_stop_card(card, 0);
1254 ccw_device_set_offline(CARD_DDEV(card));
1255 ccw_device_set_offline(CARD_WDEV(card));
1256 ccw_device_set_offline(CARD_RDEV(card));
1257 qdio_free(CARD_DDEV(card));
1258 if (recover_flag == CARD_STATE_RECOVER)
1259 card->state = CARD_STATE_RECOVER;
1260 else
1261 card->state = CARD_STATE_DOWN;
1262 mutex_unlock(&card->conf_mutex);
1263 mutex_unlock(&card->discipline_mutex);
1264 return rc;
1265 }
1266
qeth_l2_set_online(struct ccwgroup_device * gdev)1267 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1268 {
1269 return __qeth_l2_set_online(gdev, 0);
1270 }
1271
__qeth_l2_set_offline(struct ccwgroup_device * cgdev,int recovery_mode)1272 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1273 int recovery_mode)
1274 {
1275 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1276 int rc = 0, rc2 = 0, rc3 = 0;
1277 enum qeth_card_states recover_flag;
1278
1279 mutex_lock(&card->discipline_mutex);
1280 mutex_lock(&card->conf_mutex);
1281 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1282 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1283
1284 if (card->dev && netif_carrier_ok(card->dev))
1285 netif_carrier_off(card->dev);
1286 recover_flag = card->state;
1287 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1288 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1289 card->info.hwtrap = 1;
1290 }
1291 qeth_l2_stop_card(card, recovery_mode);
1292 rc = ccw_device_set_offline(CARD_DDEV(card));
1293 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1294 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1295 if (!rc)
1296 rc = (rc2) ? rc2 : rc3;
1297 if (rc)
1298 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1299 qdio_free(CARD_DDEV(card));
1300 if (recover_flag == CARD_STATE_UP)
1301 card->state = CARD_STATE_RECOVER;
1302 /* let user_space know that device is offline */
1303 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1304 mutex_unlock(&card->conf_mutex);
1305 mutex_unlock(&card->discipline_mutex);
1306 return 0;
1307 }
1308
qeth_l2_set_offline(struct ccwgroup_device * cgdev)1309 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1310 {
1311 return __qeth_l2_set_offline(cgdev, 0);
1312 }
1313
qeth_l2_recover(void * ptr)1314 static int qeth_l2_recover(void *ptr)
1315 {
1316 struct qeth_card *card;
1317 int rc = 0;
1318
1319 card = (struct qeth_card *) ptr;
1320 QETH_CARD_TEXT(card, 2, "recover1");
1321 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1322 return 0;
1323 QETH_CARD_TEXT(card, 2, "recover2");
1324 dev_warn(&card->gdev->dev,
1325 "A recovery process has been started for the device\n");
1326 qeth_set_recovery_task(card);
1327 __qeth_l2_set_offline(card->gdev, 1);
1328 rc = __qeth_l2_set_online(card->gdev, 1);
1329 if (!rc)
1330 dev_info(&card->gdev->dev,
1331 "Device successfully recovered!\n");
1332 else {
1333 qeth_close_dev(card);
1334 dev_warn(&card->gdev->dev, "The qeth device driver "
1335 "failed to recover an error on the device\n");
1336 }
1337 qeth_clear_recovery_task(card);
1338 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1339 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1340 return 0;
1341 }
1342
qeth_l2_init(void)1343 static int __init qeth_l2_init(void)
1344 {
1345 pr_info("register layer 2 discipline\n");
1346 return 0;
1347 }
1348
qeth_l2_exit(void)1349 static void __exit qeth_l2_exit(void)
1350 {
1351 pr_info("unregister layer 2 discipline\n");
1352 }
1353
qeth_l2_shutdown(struct ccwgroup_device * gdev)1354 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1355 {
1356 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1357 qeth_set_allowed_threads(card, 0, 1);
1358 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1359 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1360 qeth_qdio_clear_card(card, 0);
1361 qeth_clear_qdio_buffers(card);
1362 qdio_free(CARD_DDEV(card));
1363 }
1364
qeth_l2_pm_suspend(struct ccwgroup_device * gdev)1365 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1366 {
1367 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1368
1369 if (card->dev)
1370 netif_device_detach(card->dev);
1371 qeth_set_allowed_threads(card, 0, 1);
1372 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1373 if (gdev->state == CCWGROUP_OFFLINE)
1374 return 0;
1375 if (card->state == CARD_STATE_UP) {
1376 if (card->info.hwtrap)
1377 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1378 __qeth_l2_set_offline(card->gdev, 1);
1379 } else
1380 __qeth_l2_set_offline(card->gdev, 0);
1381 return 0;
1382 }
1383
qeth_l2_pm_resume(struct ccwgroup_device * gdev)1384 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1385 {
1386 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1387 int rc = 0;
1388
1389 if (gdev->state == CCWGROUP_OFFLINE)
1390 goto out;
1391
1392 if (card->state == CARD_STATE_RECOVER) {
1393 rc = __qeth_l2_set_online(card->gdev, 1);
1394 if (rc) {
1395 rtnl_lock();
1396 dev_close(card->dev);
1397 rtnl_unlock();
1398 }
1399 } else
1400 rc = __qeth_l2_set_online(card->gdev, 0);
1401 out:
1402 qeth_set_allowed_threads(card, 0xffffffff, 0);
1403 if (card->dev)
1404 netif_device_attach(card->dev);
1405 if (rc)
1406 dev_warn(&card->gdev->dev, "The qeth device driver "
1407 "failed to recover an error on the device\n");
1408 return rc;
1409 }
1410
1411 /* Returns zero if the command is successfully "consumed" */
qeth_l2_control_event(struct qeth_card * card,struct qeth_ipa_cmd * cmd)1412 static int qeth_l2_control_event(struct qeth_card *card,
1413 struct qeth_ipa_cmd *cmd)
1414 {
1415 switch (cmd->hdr.command) {
1416 case IPA_CMD_SETBRIDGEPORT_OSA:
1417 case IPA_CMD_SETBRIDGEPORT_IQD:
1418 if (cmd->data.sbp.hdr.command_code ==
1419 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1420 qeth_bridge_state_change(card, cmd);
1421 return 0;
1422 } else
1423 return 1;
1424 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1425 qeth_bridge_host_event(card, cmd);
1426 return 0;
1427 default:
1428 return 1;
1429 }
1430 }
1431
1432 struct qeth_discipline qeth_l2_discipline = {
1433 .devtype = &qeth_l2_devtype,
1434 .start_poll = qeth_qdio_start_poll,
1435 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1436 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1437 .recover = qeth_l2_recover,
1438 .setup = qeth_l2_probe_device,
1439 .remove = qeth_l2_remove_device,
1440 .set_online = qeth_l2_set_online,
1441 .set_offline = qeth_l2_set_offline,
1442 .shutdown = qeth_l2_shutdown,
1443 .freeze = qeth_l2_pm_suspend,
1444 .thaw = qeth_l2_pm_resume,
1445 .restore = qeth_l2_pm_resume,
1446 .control_event_handler = qeth_l2_control_event,
1447 };
1448 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1449
qeth_osn_send_control_data(struct qeth_card * card,int len,struct qeth_cmd_buffer * iob)1450 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1451 struct qeth_cmd_buffer *iob)
1452 {
1453 unsigned long flags;
1454 int rc = 0;
1455
1456 QETH_CARD_TEXT(card, 5, "osndctrd");
1457
1458 wait_event(card->wait_q,
1459 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1460 qeth_prepare_control_data(card, len, iob);
1461 QETH_CARD_TEXT(card, 6, "osnoirqp");
1462 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1463 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1464 (addr_t) iob, 0, 0);
1465 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1466 if (rc) {
1467 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1468 "ccw_device_start rc = %i\n", rc);
1469 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1470 qeth_release_buffer(iob->channel, iob);
1471 atomic_set(&card->write.irq_pending, 0);
1472 wake_up(&card->wait_q);
1473 }
1474 return rc;
1475 }
1476
qeth_osn_send_ipa_cmd(struct qeth_card * card,struct qeth_cmd_buffer * iob,int data_len)1477 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1478 struct qeth_cmd_buffer *iob, int data_len)
1479 {
1480 u16 s1, s2;
1481
1482 QETH_CARD_TEXT(card, 4, "osndipa");
1483
1484 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1485 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1486 s2 = (u16)data_len;
1487 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1488 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1489 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1490 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1491 return qeth_osn_send_control_data(card, s1, iob);
1492 }
1493
qeth_osn_assist(struct net_device * dev,void * data,int data_len)1494 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1495 {
1496 struct qeth_cmd_buffer *iob;
1497 struct qeth_card *card;
1498 int rc;
1499
1500 if (!dev)
1501 return -ENODEV;
1502 card = dev->ml_priv;
1503 if (!card)
1504 return -ENODEV;
1505 QETH_CARD_TEXT(card, 2, "osnsdmc");
1506 if (!qeth_card_hw_is_reachable(card))
1507 return -ENODEV;
1508 iob = qeth_wait_for_buffer(&card->write);
1509 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1510 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1511 return rc;
1512 }
1513 EXPORT_SYMBOL(qeth_osn_assist);
1514
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 *))1515 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1516 int (*assist_cb)(struct net_device *, void *),
1517 int (*data_cb)(struct sk_buff *))
1518 {
1519 struct qeth_card *card;
1520
1521 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1522 if (*dev == NULL)
1523 return -ENODEV;
1524 card = (*dev)->ml_priv;
1525 if (!card)
1526 return -ENODEV;
1527 QETH_CARD_TEXT(card, 2, "osnreg");
1528 if ((assist_cb == NULL) || (data_cb == NULL))
1529 return -EINVAL;
1530 card->osn_info.assist_cb = assist_cb;
1531 card->osn_info.data_cb = data_cb;
1532 return 0;
1533 }
1534 EXPORT_SYMBOL(qeth_osn_register);
1535
qeth_osn_deregister(struct net_device * dev)1536 void qeth_osn_deregister(struct net_device *dev)
1537 {
1538 struct qeth_card *card;
1539
1540 if (!dev)
1541 return;
1542 card = dev->ml_priv;
1543 if (!card)
1544 return;
1545 QETH_CARD_TEXT(card, 2, "osndereg");
1546 card->osn_info.assist_cb = NULL;
1547 card->osn_info.data_cb = NULL;
1548 return;
1549 }
1550 EXPORT_SYMBOL(qeth_osn_deregister);
1551
1552 /* SETBRIDGEPORT support, async notifications */
1553
1554 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1555
1556 /**
1557 * qeth_bridge_emit_host_event() - bridgeport address change notification
1558 * @card: qeth_card structure pointer, for udev events.
1559 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1560 * and reset token and addr_lnid are unused and may be NULL.
1561 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1562 * object, 0 - addition of an object.
1563 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1564 * @token: "network token" structure identifying physical address of the port.
1565 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1566 *
1567 * This function is called when registrations and deregistrations are
1568 * reported by the hardware, and also when notifications are enabled -
1569 * for all currently registered addresses.
1570 */
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)1571 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1572 enum qeth_an_event_type evtype,
1573 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1574 {
1575 char str[7][32];
1576 char *env[8];
1577 int i = 0;
1578
1579 switch (evtype) {
1580 case anev_reg_unreg:
1581 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1582 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1583 ? "deregister" : "register");
1584 env[i] = str[i]; i++;
1585 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1586 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1587 addr_lnid->lnid);
1588 env[i] = str[i]; i++;
1589 }
1590 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1591 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1592 addr_lnid->mac);
1593 env[i] = str[i]; i++;
1594 }
1595 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1596 token->cssid, token->ssid, token->devnum);
1597 env[i] = str[i]; i++;
1598 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1599 env[i] = str[i]; i++;
1600 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1601 token->chpid);
1602 env[i] = str[i]; i++;
1603 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1604 env[i] = str[i]; i++;
1605 break;
1606 case anev_abort:
1607 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1608 env[i] = str[i]; i++;
1609 break;
1610 case anev_reset:
1611 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1612 env[i] = str[i]; i++;
1613 break;
1614 }
1615 env[i] = NULL;
1616 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1617 }
1618
1619 struct qeth_bridge_state_data {
1620 struct work_struct worker;
1621 struct qeth_card *card;
1622 struct qeth_sbp_state_change qports;
1623 };
1624
qeth_bridge_state_change_worker(struct work_struct * work)1625 static void qeth_bridge_state_change_worker(struct work_struct *work)
1626 {
1627 struct qeth_bridge_state_data *data =
1628 container_of(work, struct qeth_bridge_state_data, worker);
1629 /* We are only interested in the first entry - local port */
1630 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1631 char env_locrem[32];
1632 char env_role[32];
1633 char env_state[32];
1634 char *env[] = {
1635 env_locrem,
1636 env_role,
1637 env_state,
1638 NULL
1639 };
1640
1641 /* Role should not change by itself, but if it did, */
1642 /* information from the hardware is authoritative. */
1643 mutex_lock(&data->card->conf_mutex);
1644 data->card->options.sbp.role = entry->role;
1645 mutex_unlock(&data->card->conf_mutex);
1646
1647 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1648 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1649 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1650 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1651 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1652 "<INVALID>");
1653 snprintf(env_state, sizeof(env_state), "STATE=%s",
1654 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1655 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1656 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1657 "<INVALID>");
1658 kobject_uevent_env(&data->card->gdev->dev.kobj,
1659 KOBJ_CHANGE, env);
1660 kfree(data);
1661 }
1662
qeth_bridge_state_change(struct qeth_card * card,struct qeth_ipa_cmd * cmd)1663 static void qeth_bridge_state_change(struct qeth_card *card,
1664 struct qeth_ipa_cmd *cmd)
1665 {
1666 struct qeth_sbp_state_change *qports =
1667 &cmd->data.sbp.data.state_change;
1668 struct qeth_bridge_state_data *data;
1669 int extrasize;
1670
1671 QETH_CARD_TEXT(card, 2, "brstchng");
1672 if (qports->num_entries == 0) {
1673 QETH_CARD_TEXT(card, 2, "BPempty");
1674 return;
1675 }
1676 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1677 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1678 return;
1679 }
1680 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1681 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1682 GFP_ATOMIC);
1683 if (!data) {
1684 QETH_CARD_TEXT(card, 2, "BPSalloc");
1685 return;
1686 }
1687 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1688 data->card = card;
1689 memcpy(&data->qports, qports,
1690 sizeof(struct qeth_sbp_state_change) + extrasize);
1691 queue_work(qeth_wq, &data->worker);
1692 }
1693
1694 struct qeth_bridge_host_data {
1695 struct work_struct worker;
1696 struct qeth_card *card;
1697 struct qeth_ipacmd_addr_change hostevs;
1698 };
1699
qeth_bridge_host_event_worker(struct work_struct * work)1700 static void qeth_bridge_host_event_worker(struct work_struct *work)
1701 {
1702 struct qeth_bridge_host_data *data =
1703 container_of(work, struct qeth_bridge_host_data, worker);
1704 int i;
1705
1706 if (data->hostevs.lost_event_mask) {
1707 dev_info(&data->card->gdev->dev,
1708 "Address notification from the Bridge Port stopped %s (%s)\n",
1709 data->card->dev->name,
1710 (data->hostevs.lost_event_mask == 0x01)
1711 ? "Overflow"
1712 : (data->hostevs.lost_event_mask == 0x02)
1713 ? "Bridge port state change"
1714 : "Unknown reason");
1715 mutex_lock(&data->card->conf_mutex);
1716 data->card->options.sbp.hostnotification = 0;
1717 mutex_unlock(&data->card->conf_mutex);
1718 qeth_bridge_emit_host_event(data->card, anev_abort,
1719 0, NULL, NULL);
1720 } else
1721 for (i = 0; i < data->hostevs.num_entries; i++) {
1722 struct qeth_ipacmd_addr_change_entry *entry =
1723 &data->hostevs.entry[i];
1724 qeth_bridge_emit_host_event(data->card,
1725 anev_reg_unreg,
1726 entry->change_code,
1727 &entry->token, &entry->addr_lnid);
1728 }
1729 kfree(data);
1730 }
1731
qeth_bridge_host_event(struct qeth_card * card,struct qeth_ipa_cmd * cmd)1732 static void qeth_bridge_host_event(struct qeth_card *card,
1733 struct qeth_ipa_cmd *cmd)
1734 {
1735 struct qeth_ipacmd_addr_change *hostevs =
1736 &cmd->data.addrchange;
1737 struct qeth_bridge_host_data *data;
1738 int extrasize;
1739
1740 QETH_CARD_TEXT(card, 2, "brhostev");
1741 if (cmd->hdr.return_code != 0x0000) {
1742 if (cmd->hdr.return_code == 0x0010) {
1743 if (hostevs->lost_event_mask == 0x00)
1744 hostevs->lost_event_mask = 0xff;
1745 } else {
1746 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1747 cmd->hdr.return_code);
1748 return;
1749 }
1750 }
1751 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1752 hostevs->num_entries;
1753 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1754 GFP_ATOMIC);
1755 if (!data) {
1756 QETH_CARD_TEXT(card, 2, "BPHalloc");
1757 return;
1758 }
1759 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1760 data->card = card;
1761 memcpy(&data->hostevs, hostevs,
1762 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1763 queue_work(qeth_wq, &data->worker);
1764 }
1765
1766 /* SETBRIDGEPORT support; sending commands */
1767
1768 struct _qeth_sbp_cbctl {
1769 u16 ipa_rc;
1770 u16 cmd_rc;
1771 union {
1772 u32 supported;
1773 struct {
1774 enum qeth_sbp_roles *role;
1775 enum qeth_sbp_states *state;
1776 } qports;
1777 } data;
1778 };
1779
1780 /**
1781 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1782 * @card: qeth_card structure pointer, for debug messages.
1783 * @cbctl: state structure with hardware return codes.
1784 * @setcmd: IPA command code
1785 *
1786 * Returns negative errno-compatible error indication or 0 on success.
1787 */
qeth_bridgeport_makerc(struct qeth_card * card,struct _qeth_sbp_cbctl * cbctl,enum qeth_ipa_sbp_cmd setcmd)1788 static int qeth_bridgeport_makerc(struct qeth_card *card,
1789 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1790 {
1791 int rc;
1792 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1793
1794 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1795 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1796 switch (cbctl->cmd_rc) {
1797 case 0x0000:
1798 rc = 0;
1799 break;
1800 case 0x2B04:
1801 case 0x0004:
1802 rc = -EOPNOTSUPP;
1803 break;
1804 case 0x2B0C:
1805 case 0x000C: /* Not configured as bridge Port */
1806 rc = -ENODEV; /* maybe not the best code here? */
1807 dev_err(&card->gdev->dev,
1808 "The device is not configured as a Bridge Port\n");
1809 break;
1810 case 0x2B14:
1811 case 0x0014: /* Another device is Primary */
1812 switch (setcmd) {
1813 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1814 rc = -EEXIST;
1815 dev_err(&card->gdev->dev,
1816 "The LAN already has a primary Bridge Port\n");
1817 break;
1818 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1819 rc = -EBUSY;
1820 dev_err(&card->gdev->dev,
1821 "The device is already a primary Bridge Port\n");
1822 break;
1823 default:
1824 rc = -EIO;
1825 }
1826 break;
1827 case 0x2B18:
1828 case 0x0018: /* This device is currently Secondary */
1829 rc = -EBUSY;
1830 dev_err(&card->gdev->dev,
1831 "The device is already a secondary Bridge Port\n");
1832 break;
1833 case 0x2B1C:
1834 case 0x001C: /* Limit for Secondary devices reached */
1835 rc = -EEXIST;
1836 dev_err(&card->gdev->dev,
1837 "The LAN cannot have more secondary Bridge Ports\n");
1838 break;
1839 case 0x2B24:
1840 case 0x0024: /* This device is currently Primary */
1841 rc = -EBUSY;
1842 dev_err(&card->gdev->dev,
1843 "The device is already a primary Bridge Port\n");
1844 break;
1845 case 0x2B20:
1846 case 0x0020: /* Not authorized by zManager */
1847 rc = -EACCES;
1848 dev_err(&card->gdev->dev,
1849 "The device is not authorized to be a Bridge Port\n");
1850 break;
1851 default:
1852 rc = -EIO;
1853 }
1854 else
1855 switch (cbctl->ipa_rc) {
1856 case IPA_RC_NOTSUPP:
1857 rc = -EOPNOTSUPP;
1858 break;
1859 case IPA_RC_UNSUPPORTED_COMMAND:
1860 rc = -EOPNOTSUPP;
1861 break;
1862 default:
1863 rc = -EIO;
1864 }
1865
1866 if (rc) {
1867 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1868 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1869 }
1870 return rc;
1871 }
1872
ipa_cmd_sbp(struct qeth_card * card)1873 static inline int ipa_cmd_sbp(struct qeth_card *card)
1874 {
1875 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1876 IPA_CMD_SETBRIDGEPORT_IQD :
1877 IPA_CMD_SETBRIDGEPORT_OSA;
1878 }
1879
qeth_bridgeport_query_support_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1880 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1881 struct qeth_reply *reply, unsigned long data)
1882 {
1883 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1884 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1885 QETH_CARD_TEXT(card, 2, "brqsupcb");
1886 cbctl->ipa_rc = cmd->hdr.return_code;
1887 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1888 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1889 cbctl->data.supported =
1890 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1891 } else {
1892 cbctl->data.supported = 0;
1893 }
1894 return 0;
1895 }
1896
1897 /**
1898 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1899 * @card: qeth_card structure pointer.
1900 *
1901 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1902 * strucutre: card->options.sbp.supported_funcs.
1903 */
qeth_bridgeport_query_support(struct qeth_card * card)1904 static void qeth_bridgeport_query_support(struct qeth_card *card)
1905 {
1906 struct qeth_cmd_buffer *iob;
1907 struct qeth_ipa_cmd *cmd;
1908 struct _qeth_sbp_cbctl cbctl;
1909
1910 QETH_CARD_TEXT(card, 2, "brqsuppo");
1911 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1912 if (!iob)
1913 return;
1914 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1915 cmd->data.sbp.hdr.cmdlength =
1916 sizeof(struct qeth_ipacmd_sbp_hdr) +
1917 sizeof(struct qeth_sbp_query_cmds_supp);
1918 cmd->data.sbp.hdr.command_code =
1919 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1920 cmd->data.sbp.hdr.used_total = 1;
1921 cmd->data.sbp.hdr.seq_no = 1;
1922 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1923 (void *)&cbctl) ||
1924 qeth_bridgeport_makerc(card, &cbctl,
1925 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1926 /* non-zero makerc signifies failure, and produce messages */
1927 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1928 return;
1929 }
1930 card->options.sbp.supported_funcs = cbctl.data.supported;
1931 }
1932
qeth_bridgeport_query_ports_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1933 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1934 struct qeth_reply *reply, unsigned long data)
1935 {
1936 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1937 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1938 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1939
1940 QETH_CARD_TEXT(card, 2, "brqprtcb");
1941 cbctl->ipa_rc = cmd->hdr.return_code;
1942 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1943 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1944 return 0;
1945 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1946 cbctl->cmd_rc = 0xffff;
1947 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1948 return 0;
1949 }
1950 /* first entry contains the state of the local port */
1951 if (qports->num_entries > 0) {
1952 if (cbctl->data.qports.role)
1953 *cbctl->data.qports.role = qports->entry[0].role;
1954 if (cbctl->data.qports.state)
1955 *cbctl->data.qports.state = qports->entry[0].state;
1956 }
1957 return 0;
1958 }
1959
1960 /**
1961 * qeth_bridgeport_query_ports() - query local bridgeport status.
1962 * @card: qeth_card structure pointer.
1963 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1964 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1965 *
1966 * Returns negative errno-compatible error indication or 0 on success.
1967 *
1968 * 'role' and 'state' are not updated in case of hardware operation failure.
1969 */
qeth_bridgeport_query_ports(struct qeth_card * card,enum qeth_sbp_roles * role,enum qeth_sbp_states * state)1970 int qeth_bridgeport_query_ports(struct qeth_card *card,
1971 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1972 {
1973 int rc = 0;
1974 struct qeth_cmd_buffer *iob;
1975 struct qeth_ipa_cmd *cmd;
1976 struct _qeth_sbp_cbctl cbctl = {
1977 .data = {
1978 .qports = {
1979 .role = role,
1980 .state = state,
1981 },
1982 },
1983 };
1984
1985 QETH_CARD_TEXT(card, 2, "brqports");
1986 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1987 return -EOPNOTSUPP;
1988 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1989 if (!iob)
1990 return -ENOMEM;
1991 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1992 cmd->data.sbp.hdr.cmdlength =
1993 sizeof(struct qeth_ipacmd_sbp_hdr);
1994 cmd->data.sbp.hdr.command_code =
1995 IPA_SBP_QUERY_BRIDGE_PORTS;
1996 cmd->data.sbp.hdr.used_total = 1;
1997 cmd->data.sbp.hdr.seq_no = 1;
1998 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1999 (void *)&cbctl);
2000 if (rc < 0)
2001 return rc;
2002 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
2003 }
2004 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
2005
qeth_bridgeport_set_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2006 static int qeth_bridgeport_set_cb(struct qeth_card *card,
2007 struct qeth_reply *reply, unsigned long data)
2008 {
2009 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
2010 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
2011 QETH_CARD_TEXT(card, 2, "brsetrcb");
2012 cbctl->ipa_rc = cmd->hdr.return_code;
2013 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
2014 return 0;
2015 }
2016
2017 /**
2018 * qeth_bridgeport_setrole() - Assign primary role to the port.
2019 * @card: qeth_card structure pointer.
2020 * @role: Role to assign.
2021 *
2022 * Returns negative errno-compatible error indication or 0 on success.
2023 */
qeth_bridgeport_setrole(struct qeth_card * card,enum qeth_sbp_roles role)2024 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
2025 {
2026 int rc = 0;
2027 int cmdlength;
2028 struct qeth_cmd_buffer *iob;
2029 struct qeth_ipa_cmd *cmd;
2030 struct _qeth_sbp_cbctl cbctl;
2031 enum qeth_ipa_sbp_cmd setcmd;
2032
2033 QETH_CARD_TEXT(card, 2, "brsetrol");
2034 switch (role) {
2035 case QETH_SBP_ROLE_NONE:
2036 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
2037 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2038 sizeof(struct qeth_sbp_reset_role);
2039 break;
2040 case QETH_SBP_ROLE_PRIMARY:
2041 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
2042 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2043 sizeof(struct qeth_sbp_set_primary);
2044 break;
2045 case QETH_SBP_ROLE_SECONDARY:
2046 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
2047 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2048 sizeof(struct qeth_sbp_set_secondary);
2049 break;
2050 default:
2051 return -EINVAL;
2052 }
2053 if (!(card->options.sbp.supported_funcs & setcmd))
2054 return -EOPNOTSUPP;
2055 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
2056 if (!iob)
2057 return -ENOMEM;
2058 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2059 cmd->data.sbp.hdr.cmdlength = cmdlength;
2060 cmd->data.sbp.hdr.command_code = setcmd;
2061 cmd->data.sbp.hdr.used_total = 1;
2062 cmd->data.sbp.hdr.seq_no = 1;
2063 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
2064 (void *)&cbctl);
2065 if (rc < 0)
2066 return rc;
2067 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
2068 }
2069
2070 /**
2071 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
2072 * @card: qeth_card structure pointer, for debug messages.
2073 *
2074 * Returns negative errno-compatible error indication or 0 on success.
2075 */
qeth_anset_makerc(struct qeth_card * card,int pnso_rc,u16 response)2076 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2077 {
2078 int rc;
2079
2080 if (pnso_rc == 0)
2081 switch (response) {
2082 case 0x0001:
2083 rc = 0;
2084 break;
2085 case 0x0004:
2086 case 0x0100:
2087 case 0x0106:
2088 rc = -EOPNOTSUPP;
2089 dev_err(&card->gdev->dev,
2090 "Setting address notification failed\n");
2091 break;
2092 case 0x0107:
2093 rc = -EAGAIN;
2094 break;
2095 default:
2096 rc = -EIO;
2097 }
2098 else
2099 rc = -EIO;
2100
2101 if (rc) {
2102 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2103 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2104 }
2105 return rc;
2106 }
2107
qeth_bridgeport_an_set_cb(void * priv,enum qdio_brinfo_entry_type type,void * entry)2108 static void qeth_bridgeport_an_set_cb(void *priv,
2109 enum qdio_brinfo_entry_type type, void *entry)
2110 {
2111 struct qeth_card *card = (struct qeth_card *)priv;
2112 struct qdio_brinfo_entry_l2 *l2entry;
2113 u8 code;
2114
2115 if (type != l2_addr_lnid) {
2116 WARN_ON_ONCE(1);
2117 return;
2118 }
2119
2120 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2121 code = IPA_ADDR_CHANGE_CODE_MACADDR;
2122 if (l2entry->addr_lnid.lnid < VLAN_N_VID)
2123 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2124 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2125 (struct net_if_token *)&l2entry->nit,
2126 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2127 }
2128
2129 /**
2130 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2131 * @card: qeth_card structure pointer.
2132 * @enable: 0 - disable, non-zero - enable notifications
2133 *
2134 * Returns negative errno-compatible error indication or 0 on success.
2135 *
2136 * On enable, emits a series of address notifications udev events for all
2137 * currently registered hosts.
2138 */
qeth_bridgeport_an_set(struct qeth_card * card,int enable)2139 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2140 {
2141 int rc;
2142 u16 response;
2143 struct ccw_device *ddev;
2144 struct subchannel_id schid;
2145
2146 if (!card)
2147 return -EINVAL;
2148 if (!card->options.sbp.supported_funcs)
2149 return -EOPNOTSUPP;
2150 ddev = CARD_DDEV(card);
2151 ccw_device_get_schid(ddev, &schid);
2152
2153 if (enable) {
2154 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2155 rc = qdio_pnso_brinfo(schid, 1, &response,
2156 qeth_bridgeport_an_set_cb, card);
2157 } else
2158 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2159 return qeth_anset_makerc(card, rc, response);
2160 }
2161 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2162
2163 module_init(qeth_l2_init);
2164 module_exit(qeth_l2_exit);
2165 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2166 MODULE_DESCRIPTION("qeth layer 2 discipline");
2167 MODULE_LICENSE("GPL");
2168