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s390/qeth: move common ioctl handling to core
[mirror_ubuntu-artful-kernel.git] / drivers / s390 / net / qeth_l2_main.c
CommitLineData
4a71df50 1/*
bbcfcdc8 2 * Copyright IBM Corp. 2007, 2009
4a71df50
FB		 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
74eacdb9
FB		 9#define KMSG_COMPONENT "qeth"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
4a71df50
FB		 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>
5a0e3ad6 17#include <linux/slab.h>
4a71df50 18#include <linux/etherdevice.h>
4a71df50 19#include <linux/ip.h>
ccffad25 20#include <linux/list.h>
fe5c8028
LD		 21#include <linux/hash.h>
22#include <linux/hashtable.h>
23#include <linux/string.h>
4a71df50 24#include "qeth_core.h"
b4d72c08 25#include "qeth_l2.h"
4a71df50 26
4a71df50
FB		 27static int qeth_l2_set_offline(struct ccwgroup_device *);
28static int qeth_l2_stop(struct net_device *);
fe5c8028 29static void qeth_l2_set_rx_mode(struct net_device *);
c044dc21
EC		 30static void qeth_bridgeport_query_support(struct qeth_card *card);
31static void qeth_bridge_state_change(struct qeth_card *card,
32 struct qeth_ipa_cmd *cmd);
33static void qeth_bridge_host_event(struct qeth_card *card,
34 struct qeth_ipa_cmd *cmd);
4a71df50 35
4a71df50
FB		 36static int qeth_l2_verify_dev(struct net_device *dev)
37{
38 struct qeth_card *card;
39 unsigned long flags;
40 int rc = 0;
41
42 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
43 list_for_each_entry(card, &qeth_core_card_list.list, list) {
44 if (card->dev == dev) {
45 rc = QETH_REAL_CARD;
46 break;
47 }
48 }
49 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
50
51 return rc;
52}
53
54static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
55{
56 struct qeth_card *card;
57 struct net_device *ndev;
f06f6f32 58 __u16 temp_dev_no;
4a71df50 59 unsigned long flags;
f06f6f32 60 struct ccw_dev_id read_devid;
4a71df50
FB		 61
62 ndev = NULL;
63 memcpy(&temp_dev_no, read_dev_no, 2);
64 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
65 list_for_each_entry(card, &qeth_core_card_list.list, list) {
f06f6f32
CH		 66 ccw_device_get_id(CARD_RDEV(card), &read_devid);
67 if (read_devid.devno == temp_dev_no) {
4a71df50
FB		 68 ndev = card->dev;
69 break;
70 }
71 }
72 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
73 return ndev;
74}
75
efbbc1d5 76static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
4a71df50 77{
efbbc1d5 78 int rc;
4a71df50 79
efbbc1d5 80 if (retcode)
1aec42bc 81 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
efbbc1d5
EC		 82 switch (retcode) {
83 case IPA_RC_SUCCESS:
84 rc = 0;
85 break;
86 case IPA_RC_L2_UNSUPPORTED_CMD:
ffb95251 87 rc = -EOPNOTSUPP;
efbbc1d5
EC		 88 break;
89 case IPA_RC_L2_ADDR_TABLE_FULL:
90 rc = -ENOSPC;
91 break;
92 case IPA_RC_L2_DUP_MAC:
93 case IPA_RC_L2_DUP_LAYER3_MAC:
94 rc = -EEXIST;
95 break;
96 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
97 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
98 rc = -EPERM;
99 break;
100 case IPA_RC_L2_MAC_NOT_FOUND:
101 rc = -ENOENT;
102 break;
1aec42bc
TR		 103 case -ENOMEM:
104 rc = -ENOMEM;
105 break;
efbbc1d5
EC		 106 default:
107 rc = -EIO;
108 break;
4a71df50 109 }
efbbc1d5 110 return rc;
4a71df50
FB		 111}
112
ac988d78
JW		 113static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
114 enum qeth_ipa_cmds ipacmd)
115{
116 struct qeth_ipa_cmd *cmd;
117 struct qeth_cmd_buffer *iob;
118
119 QETH_CARD_TEXT(card, 2, "L2sdmac");
120 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
121 if (!iob)
122 return -ENOMEM;
123 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
124 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
125 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
126 return qeth_setdel_makerc(card, qeth_send_ipa_cmd(card, iob,
127 NULL, NULL));
128}
129
130static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
131{
132 int rc;
133
134 QETH_CARD_TEXT(card, 2, "L2Setmac");
135 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
136 if (rc == 0) {
137 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
138 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
139 dev_info(&card->gdev->dev,
140 "MAC address %pM successfully registered on device %s\n",
141 card->dev->dev_addr, card->dev->name);
142 } else {
143 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
144 switch (rc) {
145 case -EEXIST:
146 dev_warn(&card->gdev->dev,
147 "MAC address %pM already exists\n", mac);
148 break;
149 case -EPERM:
150 dev_warn(&card->gdev->dev,
151 "MAC address %pM is not authorized\n", mac);
152 break;
153 }
154 }
155 return rc;
156}
157
158static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
159{
160 int rc;
161
162 QETH_CARD_TEXT(card, 2, "L2Delmac");
163 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
164 return 0;
165 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC);
166 if (rc == 0)
167 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
168 return rc;
169}
170
4a71df50
FB		 171static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
172{
efbbc1d5 173 int rc;
4a71df50 174
efbbc1d5 175 QETH_CARD_TEXT(card, 2, "L2Sgmac");
754e0b8d 176 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC);
efbbc1d5
EC		 177 if (rc == -EEXIST)
178 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
179 mac, QETH_CARD_IFNAME(card));
180 else if (rc)
181 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
182 mac, QETH_CARD_IFNAME(card), rc);
183 return rc;
4a71df50
FB		 184}
185
186static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
187{
efbbc1d5
EC		 188 int rc;
189
847a50fd 190 QETH_CARD_TEXT(card, 2, "L2Dgmac");
754e0b8d 191 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC);
efbbc1d5
EC		 192 if (rc)
193 QETH_DBF_MESSAGE(2,
194 "Could not delete group MAC %pM on %s: %d\n",
195 mac, QETH_CARD_IFNAME(card), rc);
196 return rc;
4a71df50
FB		 197}
198
fe5c8028
LD		 199static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
200{
fe5c8028 201 if (mac->is_uc) {
979d7929 202 return qeth_l2_send_setdelmac(card, mac->mac_addr,
754e0b8d 203 IPA_CMD_SETVMAC);
7db2266a 204 } else {
979d7929
JW		 205 return qeth_l2_send_setgroupmac(card, mac->mac_addr);
206 }
207}
208
209static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac)
210{
211 if (mac->is_uc) {
212 return qeth_l2_send_setdelmac(card, mac->mac_addr,
213 IPA_CMD_DELVMAC);
214 } else {
215 return qeth_l2_send_delgroupmac(card, mac->mac_addr);
7db2266a 216 }
4a71df50
FB		 217}
218
c07cbf2e 219static void qeth_l2_del_all_macs(struct qeth_card *card)
4a71df50 220{
fe5c8028
LD		 221 struct qeth_mac *mac;
222 struct hlist_node *tmp;
223 int i;
4a71df50
FB		 224
225 spin_lock_bh(&card->mclock);
fe5c8028 226 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
fe5c8028
LD		 227 hash_del(&mac->hnode);
228 kfree(mac);
4a71df50
FB		 229 }
230 spin_unlock_bh(&card->mclock);
231}
232
ac988d78
JW		 233static inline u32 qeth_l2_mac_hash(const u8 *addr)
234{
235 return get_unaligned((u32 *)(&addr[2]));
236}
237
ce73e10e
KDW		 238static inline int qeth_l2_get_cast_type(struct qeth_card *card,
239 struct sk_buff *skb)
4a71df50 240{
ce73e10e
KDW		 241 if (card->info.type == QETH_CARD_TYPE_OSN)
242 return RTN_UNSPEC;
243 if (is_broadcast_ether_addr(skb->data))
244 return RTN_BROADCAST;
245 if (is_multicast_ether_addr(skb->data))
246 return RTN_MULTICAST;
247 return RTN_UNSPEC;
4a71df50
FB		 248}
249
4d7def2a
TR		 250static inline void qeth_l2_hdr_csum(struct qeth_card *card,
251 struct qeth_hdr *hdr, struct sk_buff *skb)
252{
253 struct iphdr *iph = ip_hdr(skb);
254
255 /* tcph->check contains already the pseudo hdr checksum
256 * so just set the header flags
257 */
258 if (iph->protocol == IPPROTO_UDP)
259 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
260 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
261 QETH_HDR_EXT_CSUM_HDR_REQ;
262 iph->check = 0;
263 if (card->options.performance_stats)
264 card->perf_stats.tx_csum++;
265}
266
4a71df50 267static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
43934077 268 struct sk_buff *skb, int cast_type)
4a71df50 269{
683d718a 270 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
4a71df50
FB		 271
272 memset(hdr, 0, sizeof(struct qeth_hdr));
273 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
274
275 /* set byte byte 3 to casting flags */
276 if (cast_type == RTN_MULTICAST)
277 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
278 else if (cast_type == RTN_BROADCAST)
279 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
280 else
ce73e10e 281 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
4a71df50
FB		 282
283 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
284 /* VSWITCH relies on the VLAN
285 * information to be present in
286 * the QDIO header */
287 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
288 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
289 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
290 }
291}
292
293static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
294 struct qeth_reply *reply, unsigned long data)
295{
296 struct qeth_ipa_cmd *cmd;
297
847a50fd 298 QETH_CARD_TEXT(card, 2, "L2sdvcb");
4a71df50
FB		 299 cmd = (struct qeth_ipa_cmd *) data;
300 if (cmd->hdr.return_code) {
14cc21b6 301 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
4a71df50
FB		 302 "Continuing\n", cmd->data.setdelvlan.vlan_id,
303 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
847a50fd
CO		 304 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
305 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 306 }
307 return 0;
308}
309
310static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
311 enum qeth_ipa_cmds ipacmd)
312{
313 struct qeth_ipa_cmd *cmd;
314 struct qeth_cmd_buffer *iob;
315
847a50fd 316 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
4a71df50 317 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
1aec42bc
TR		 318 if (!iob)
319 return -ENOMEM;
4a71df50
FB		 320 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
321 cmd->data.setdelvlan.vlan_id = i;
322 return qeth_send_ipa_cmd(card, iob,
323 qeth_l2_send_setdelvlan_cb, NULL);
324}
325
70919e23 326static void qeth_l2_process_vlans(struct qeth_card *card)
4a71df50
FB		 327{
328 struct qeth_vlan_vid *id;
847a50fd 329 QETH_CARD_TEXT(card, 3, "L2prcvln");
4a71df50
FB		 330 spin_lock_bh(&card->vlanlock);
331 list_for_each_entry(id, &card->vid_list, list) {
70919e23 332 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
4a71df50
FB		 333 }
334 spin_unlock_bh(&card->vlanlock);
335}
336
80d5c368
PM		 337static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
338 __be16 proto, u16 vid)
4a71df50 339{
509e2562 340 struct qeth_card *card = dev->ml_priv;
4a71df50 341 struct qeth_vlan_vid *id;
1aec42bc 342 int rc;
4a71df50 343
847a50fd 344 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
10651db7 345 if (!vid)
8e586137 346 return 0;
5113fec0 347 if (card->info.type == QETH_CARD_TYPE_OSM) {
847a50fd 348 QETH_CARD_TEXT(card, 3, "aidOSM");
8e586137 349 return 0;
5113fec0 350 }
8e98ac48 351 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 352 QETH_CARD_TEXT(card, 3, "aidREC");
8e586137 353 return 0;
8e98ac48 354 }
4a71df50
FB		 355 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
356 if (id) {
357 id->vid = vid;
1aec42bc
TR		 358 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
359 if (rc) {
360 kfree(id);
361 return rc;
362 }
4a71df50
FB		 363 spin_lock_bh(&card->vlanlock);
364 list_add_tail(&id->list, &card->vid_list);
365 spin_unlock_bh(&card->vlanlock);
8e586137
JP		 366 } else {
367 return -ENOMEM;
4a71df50 368 }
8e586137 369 return 0;
4a71df50
FB		 370}
371
80d5c368
PM		 372static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
373 __be16 proto, u16 vid)
4a71df50
FB		 374{
375 struct qeth_vlan_vid *id, *tmpid = NULL;
509e2562 376 struct qeth_card *card = dev->ml_priv;
1aec42bc 377 int rc = 0;
4a71df50 378
847a50fd 379 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
5113fec0 380 if (card->info.type == QETH_CARD_TYPE_OSM) {
847a50fd 381 QETH_CARD_TEXT(card, 3, "kidOSM");
8e586137 382 return 0;
5113fec0 383 }
8e98ac48 384 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 385 QETH_CARD_TEXT(card, 3, "kidREC");
8e586137 386 return 0;
8e98ac48 387 }
4a71df50
FB		 388 spin_lock_bh(&card->vlanlock);
389 list_for_each_entry(id, &card->vid_list, list) {
390 if (id->vid == vid) {
391 list_del(&id->list);
392 tmpid = id;
393 break;
394 }
395 }
396 spin_unlock_bh(&card->vlanlock);
397 if (tmpid) {
1aec42bc 398 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
4a71df50
FB		 399 kfree(tmpid);
400 }
fe5c8028 401 qeth_l2_set_rx_mode(card->dev);
1aec42bc 402 return rc;
4a71df50
FB		 403}
404
b2f4de8b 405static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
4a71df50 406{
d11ba0c4
PT		 407 QETH_DBF_TEXT(SETUP , 2, "stopcard");
408 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 409
410 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 411 if (card->read.state == CH_STATE_UP &&
412 card->write.state == CH_STATE_UP &&
413 (card->state == CARD_STATE_UP)) {
414 if (recovery_mode &&
415 card->info.type != QETH_CARD_TYPE_OSN) {
416 qeth_l2_stop(card->dev);
417 } else {
418 rtnl_lock();
419 dev_close(card->dev);
420 rtnl_unlock();
421 }
70919e23 422 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
4a71df50
FB		 423 card->state = CARD_STATE_SOFTSETUP;
424 }
425 if (card->state == CARD_STATE_SOFTSETUP) {
c07cbf2e 426 qeth_l2_del_all_macs(card);
4a71df50
FB		 427 qeth_clear_ipacmd_list(card);
428 card->state = CARD_STATE_HARDSETUP;
429 }
430 if (card->state == CARD_STATE_HARDSETUP) {
431 qeth_qdio_clear_card(card, 0);
432 qeth_clear_qdio_buffers(card);
433 qeth_clear_working_pool_list(card);
434 card->state = CARD_STATE_DOWN;
435 }
436 if (card->state == CARD_STATE_DOWN) {
437 qeth_clear_cmd_buffers(&card->read);
438 qeth_clear_cmd_buffers(&card->write);
439 }
4a71df50
FB		 440}
441
a1c3ed4c
FB		 442static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
443 int budget, int *done)
4a71df50 444{
a1c3ed4c 445 int work_done = 0;
4a71df50
FB		 446 struct sk_buff *skb;
447 struct qeth_hdr *hdr;
4a71df50
FB		 448 unsigned int len;
449
a1c3ed4c 450 *done = 0;
18af5c17 451 WARN_ON_ONCE(!budget);
a1c3ed4c
FB		 452 while (budget) {
453 skb = qeth_core_get_next_skb(card,
b3332930 454 &card->qdio.in_q->bufs[card->rx.b_index],
a1c3ed4c
FB		 455 &card->rx.b_element, &card->rx.e_offset, &hdr);
456 if (!skb) {
457 *done = 1;
458 break;
4a71df50 459 }
a1c3ed4c 460 skb->dev = card->dev;
4a71df50
FB		 461 switch (hdr->hdr.l2.id) {
462 case QETH_HEADER_TYPE_LAYER2:
463 skb->pkt_type = PACKET_HOST;
464 skb->protocol = eth_type_trans(skb, skb->dev);
4d7def2a
TR		 465 if ((card->dev->features & NETIF_F_RXCSUM)
466 && ((hdr->hdr.l2.flags[1] &
467 (QETH_HDR_EXT_CSUM_HDR_REQ |
468 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
469 (QETH_HDR_EXT_CSUM_HDR_REQ |
470 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
471 skb->ip_summed = CHECKSUM_UNNECESSARY;
472 else
473 skb->ip_summed = CHECKSUM_NONE;
12883725
UB		 474 if (skb->protocol == htons(ETH_P_802_2))
475 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
4a71df50 476 len = skb->len;
9abfa8cb 477 napi_gro_receive(&card->napi, skb);
4a71df50
FB		 478 break;
479 case QETH_HEADER_TYPE_OSN:
2d488c2f
UB		 480 if (card->info.type == QETH_CARD_TYPE_OSN) {
481 skb_push(skb, sizeof(struct qeth_hdr));
482 skb_copy_to_linear_data(skb, hdr,
4a71df50 483 sizeof(struct qeth_hdr));
2d488c2f
UB		 484 len = skb->len;
485 card->osn_info.data_cb(skb);
486 break;
487 }
488 /* else unknown */
4a71df50
FB		 489 default:
490 dev_kfree_skb_any(skb);
847a50fd 491 QETH_CARD_TEXT(card, 3, "inbunkno");
d11ba0c4 492 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 493 continue;
494 }
a1c3ed4c
FB		 495 work_done++;
496 budget--;
4a71df50
FB		 497 card->stats.rx_packets++;
498 card->stats.rx_bytes += len;
499 }
a1c3ed4c
FB		 500 return work_done;
501}
502
503static int qeth_l2_poll(struct napi_struct *napi, int budget)
504{
505 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
506 int work_done = 0;
507 struct qeth_qdio_buffer *buffer;
508 int done;
509 int new_budget = budget;
510
511 if (card->options.performance_stats) {
512 card->perf_stats.inbound_cnt++;
513 card->perf_stats.inbound_start_time = qeth_get_micros();
514 }
515
516 while (1) {
517 if (!card->rx.b_count) {
518 card->rx.qdio_err = 0;
519 card->rx.b_count = qdio_get_next_buffers(
520 card->data.ccwdev, 0, &card->rx.b_index,
521 &card->rx.qdio_err);
522 if (card->rx.b_count <= 0) {
523 card->rx.b_count = 0;
524 break;
525 }
526 card->rx.b_element =
527 &card->qdio.in_q->bufs[card->rx.b_index]
528 .buffer->element[0];
529 card->rx.e_offset = 0;
530 }
531
532 while (card->rx.b_count) {
533 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
534 if (!(card->rx.qdio_err &&
535 qeth_check_qdio_errors(card, buffer->buffer,
536 card->rx.qdio_err, "qinerr")))
537 work_done += qeth_l2_process_inbound_buffer(
538 card, new_budget, &done);
539 else
540 done = 1;
541
542 if (done) {
543 if (card->options.performance_stats)
544 card->perf_stats.bufs_rec++;
545 qeth_put_buffer_pool_entry(card,
546 buffer->pool_entry);
547 qeth_queue_input_buffer(card, card->rx.b_index);
548 card->rx.b_count--;
549 if (card->rx.b_count) {
550 card->rx.b_index =
551 (card->rx.b_index + 1) %
552 QDIO_MAX_BUFFERS_PER_Q;
553 card->rx.b_element =
554 &card->qdio.in_q
555 ->bufs[card->rx.b_index]
556 .buffer->element[0];
557 card->rx.e_offset = 0;
558 }
559 }
560
561 if (work_done >= budget)
562 goto out;
563 else
564 new_budget = budget - work_done;
565 }
566 }
567
568 napi_complete(napi);
569 if (qdio_start_irq(card->data.ccwdev, 0))
570 napi_schedule(&card->napi);
571out:
572 if (card->options.performance_stats)
573 card->perf_stats.inbound_time += qeth_get_micros() -
574 card->perf_stats.inbound_start_time;
575 return work_done;
4a71df50
FB		 576}
577
4a71df50
FB		 578static int qeth_l2_request_initial_mac(struct qeth_card *card)
579{
580 int rc = 0;
581 char vendor_pre[] = {0x02, 0x00, 0x00};
582
d11ba0c4
PT		 583 QETH_DBF_TEXT(SETUP, 2, "doL2init");
584 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
4a71df50 585
a134884a
SR		 586 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
587 rc = qeth_query_setadapterparms(card);
588 if (rc) {
589 QETH_DBF_MESSAGE(2, "could not query adapter "
590 "parameters on device %s: x%x\n",
591 CARD_BUS_ID(card), rc);
592 }
4a71df50
FB		 593 }
594
5113fec0
UB		 595 if (card->info.type == QETH_CARD_TYPE_IQD ||
596 card->info.type == QETH_CARD_TYPE_OSM ||
597 card->info.type == QETH_CARD_TYPE_OSX ||
598 card->info.guestlan) {
4a71df50
FB		 599 rc = qeth_setadpparms_change_macaddr(card);
600 if (rc) {
14cc21b6
FB		 601 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
602 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1aec42bc 603 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
4a71df50
FB		 604 return rc;
605 }
d11ba0c4 606 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
4a71df50 607 } else {
1833611d 608 eth_random_addr(card->dev->dev_addr);
4a71df50
FB		 609 memcpy(card->dev->dev_addr, vendor_pre, 3);
610 }
611 return 0;
612}
613
614static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
615{
616 struct sockaddr *addr = p;
509e2562 617 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 618 int rc = 0;
619
847a50fd 620 QETH_CARD_TEXT(card, 3, "setmac");
4a71df50
FB		 621
622 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
847a50fd 623 QETH_CARD_TEXT(card, 3, "setmcINV");
4a71df50
FB		 624 return -EOPNOTSUPP;
625 }
626
5113fec0
UB		 627 if (card->info.type == QETH_CARD_TYPE_OSN ||
628 card->info.type == QETH_CARD_TYPE_OSM ||
629 card->info.type == QETH_CARD_TYPE_OSX) {
847a50fd 630 QETH_CARD_TEXT(card, 3, "setmcTYP");
4a71df50
FB		 631 return -EOPNOTSUPP;
632 }
847a50fd 633 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
8e98ac48 634 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 635 QETH_CARD_TEXT(card, 3, "setmcREC");
8e98ac48
UB		 636 return -ERESTARTSYS;
637 }
4a71df50 638 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
efbbc1d5 639 if (!rc || (rc == -ENOENT))
4a71df50 640 rc = qeth_l2_send_setmac(card, addr->sa_data);
e0a8114c 641 return rc ? -EINVAL : 0;
4a71df50
FB		 642}
643
0db587b0
EC		 644static void qeth_promisc_to_bridge(struct qeth_card *card)
645{
646 struct net_device *dev = card->dev;
647 enum qeth_ipa_promisc_modes promisc_mode;
648 int role;
649 int rc;
650
651 QETH_CARD_TEXT(card, 3, "pmisc2br");
652
653 if (!card->options.sbp.reflect_promisc)
654 return;
655 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
656 : SET_PROMISC_MODE_OFF;
657 if (promisc_mode == card->info.promisc_mode)
658 return;
659
660 if (promisc_mode == SET_PROMISC_MODE_ON) {
661 if (card->options.sbp.reflect_promisc_primary)
662 role = QETH_SBP_ROLE_PRIMARY;
663 else
664 role = QETH_SBP_ROLE_SECONDARY;
665 } else
666 role = QETH_SBP_ROLE_NONE;
667
668 rc = qeth_bridgeport_setrole(card, role);
669 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
670 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
671 if (!rc) {
672 card->options.sbp.role = role;
673 card->info.promisc_mode = promisc_mode;
674 }
fe5c8028
LD		 675
676}
677/* New MAC address is added to the hash table and marked to be written on card
678 * only if there is not in the hash table storage already
679 *
680*/
681static void
682qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
683{
684 struct qeth_mac *mac;
685
686 hash_for_each_possible(card->mac_htable, mac, hnode,
687 qeth_l2_mac_hash(ha->addr)) {
688 if (is_uc == mac->is_uc &&
689 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
5f78e29c 690 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
fe5c8028
LD		 691 return;
692 }
693 }
694
695 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
696
697 if (!mac)
698 return;
699
700 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
701 mac->is_uc = is_uc;
5f78e29c 702 mac->disp_flag = QETH_DISP_ADDR_ADD;
fe5c8028
LD		 703
704 hash_add(card->mac_htable, &mac->hnode,
705 qeth_l2_mac_hash(mac->mac_addr));
706
0db587b0
EC		 707}
708
fe5c8028 709static void qeth_l2_set_rx_mode(struct net_device *dev)
4a71df50 710{
509e2562 711 struct qeth_card *card = dev->ml_priv;
ccffad25 712 struct netdev_hw_addr *ha;
fe5c8028
LD		 713 struct qeth_mac *mac;
714 struct hlist_node *tmp;
715 int i;
716 int rc;
4a71df50
FB		 717
718 if (card->info.type == QETH_CARD_TYPE_OSN)
fe5c8028 719 return;
4a71df50 720
847a50fd 721 QETH_CARD_TEXT(card, 3, "setmulti");
8e98ac48
UB		 722 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
723 (card->state != CARD_STATE_UP))
724 return;
fe5c8028 725
4a71df50 726 spin_lock_bh(&card->mclock);
fe5c8028 727
22bedad3 728 netdev_for_each_mc_addr(ha, dev)
fe5c8028 729 qeth_l2_add_mac(card, ha, 0);
7db2266a 730
32e7bfc4 731 netdev_for_each_uc_addr(ha, dev)
fe5c8028
LD		 732 qeth_l2_add_mac(card, ha, 1);
733
734 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
5f78e29c 735 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
979d7929 736 qeth_l2_remove_mac(card, mac);
fe5c8028
LD		 737 hash_del(&mac->hnode);
738 kfree(mac);
739
5f78e29c 740 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
fe5c8028
LD		 741 rc = qeth_l2_write_mac(card, mac);
742 if (rc) {
743 hash_del(&mac->hnode);
744 kfree(mac);
745 } else
5f78e29c 746 mac->disp_flag = QETH_DISP_ADDR_DELETE;
fe5c8028 747 } else
5f78e29c 748 mac->disp_flag = QETH_DISP_ADDR_DELETE;
fe5c8028 749 }
7db2266a 750
4a71df50 751 spin_unlock_bh(&card->mclock);
fe5c8028 752
0db587b0
EC		 753 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
754 qeth_setadp_promisc_mode(card);
755 else
756 qeth_promisc_to_bridge(card);
4a71df50
FB		 757}
758
759static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
760{
761 int rc;
762 struct qeth_hdr *hdr = NULL;
763 int elements = 0;
509e2562 764 struct qeth_card *card = dev->ml_priv;
4a71df50 765 struct sk_buff *new_skb = skb;
ce73e10e 766 int cast_type = qeth_l2_get_cast_type(card, skb);
290b8348 767 struct qeth_qdio_out_q *queue;
4a71df50 768 int tx_bytes = skb->len;
683d718a
FB		 769 int data_offset = -1;
770 int elements_needed = 0;
771 int hd_len = 0;
d52aec97 772 int nr_frags;
4a71df50 773
290b8348
SR		 774 if (card->qdio.do_prio_queueing || (cast_type &&
775 card->info.is_multicast_different))
776 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
777 qeth_get_ip_version(skb), cast_type)];
778 else
779 queue = card->qdio.out_qs[card->qdio.default_out_queue];
780
4a71df50
FB		 781 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
782 card->stats.tx_carrier_errors++;
783 goto tx_drop;
784 }
785
786 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
787 (skb->protocol == htons(ETH_P_IPV6)))
788 goto tx_drop;
789
790 if (card->options.performance_stats) {
791 card->perf_stats.outbound_cnt++;
792 card->perf_stats.outbound_start_time = qeth_get_micros();
793 }
794 netif_stop_queue(dev);
795
d52aec97
EC		 796 /* fix hardware limitation: as long as we do not have sbal
797 * chaining we can not send long frag lists
798 */
799 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
7d969d2e 800 !qeth_get_elements_no(card, new_skb, 0, 0)) {
6059c905
EC		 801 int lin_rc = skb_linearize(new_skb);
802
803 if (card->options.performance_stats) {
804 if (lin_rc)
805 card->perf_stats.tx_linfail++;
806 else
807 card->perf_stats.tx_lin++;
808 }
809 if (lin_rc)
d52aec97 810 goto tx_drop;
d52aec97
EC		 811 }
812
4a71df50
FB		 813 if (card->info.type == QETH_CARD_TYPE_OSN)
814 hdr = (struct qeth_hdr *)skb->data;
815 else {
64ef8957 816 if (card->info.type == QETH_CARD_TYPE_IQD) {
683d718a
FB		 817 new_skb = skb;
818 data_offset = ETH_HLEN;
819 hd_len = ETH_HLEN;
820 hdr = kmem_cache_alloc(qeth_core_header_cache,
821 GFP_ATOMIC);
822 if (!hdr)
823 goto tx_drop;
824 elements_needed++;
825 skb_reset_mac_header(new_skb);
43934077 826 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
683d718a
FB		 827 hdr->hdr.l2.pkt_length = new_skb->len;
828 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
829 skb_mac_header(new_skb), ETH_HLEN);
830 } else {
831 /* create a clone with writeable headroom */
832 new_skb = skb_realloc_headroom(skb,
833 sizeof(struct qeth_hdr));
834 if (!new_skb)
835 goto tx_drop;
836 hdr = (struct qeth_hdr *)skb_push(new_skb,
f90b744e 837 sizeof(struct qeth_hdr));
683d718a 838 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
43934077 839 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
4d7def2a
TR		 840 if (new_skb->ip_summed == CHECKSUM_PARTIAL)
841 qeth_l2_hdr_csum(card, hdr, new_skb);
683d718a 842 }
4a71df50
FB		 843 }
844
7d969d2e
JW		 845 elements = qeth_get_elements_no(card, new_skb, elements_needed,
846 (data_offset > 0) ? data_offset : 0);
64ef8957
FB		 847 if (!elements) {
848 if (data_offset >= 0)
849 kmem_cache_free(qeth_core_header_cache, hdr);
850 goto tx_drop;
f61a0d05 851 }
4a71df50 852
51aa165c 853 if (card->info.type != QETH_CARD_TYPE_IQD) {
d4ae1f5e 854 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
51aa165c
FB		 855 sizeof(struct qeth_hdr_layer2)))
856 goto tx_drop;
4a71df50 857 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
64ef8957 858 elements);
51aa165c 859 } else
4a71df50 860 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
64ef8957 861 elements, data_offset, hd_len);
4a71df50
FB		 862 if (!rc) {
863 card->stats.tx_packets++;
864 card->stats.tx_bytes += tx_bytes;
d52aec97
EC		 865 if (card->options.performance_stats) {
866 nr_frags = skb_shinfo(new_skb)->nr_frags;
867 if (nr_frags) {
868 card->perf_stats.sg_skbs_sent++;
869 /* nr_frags + skb->data */
870 card->perf_stats.sg_frags_sent += nr_frags + 1;
871 }
872 }
4a71df50
FB		 873 if (new_skb != skb)
874 dev_kfree_skb_any(skb);
ec634fe3 875 rc = NETDEV_TX_OK;
4a71df50 876 } else {
683d718a
FB		 877 if (data_offset >= 0)
878 kmem_cache_free(qeth_core_header_cache, hdr);
879
4a71df50
FB		 880 if (rc == -EBUSY) {
881 if (new_skb != skb)
882 dev_kfree_skb_any(new_skb);
883 return NETDEV_TX_BUSY;
884 } else
885 goto tx_drop;
886 }
887
888 netif_wake_queue(dev);
889 if (card->options.performance_stats)
890 card->perf_stats.outbound_time += qeth_get_micros() -
891 card->perf_stats.outbound_start_time;
892 return rc;
893
894tx_drop:
895 card->stats.tx_dropped++;
896 card->stats.tx_errors++;
897 if ((new_skb != skb) && new_skb)
898 dev_kfree_skb_any(new_skb);
899 dev_kfree_skb_any(skb);
d0ec0f54 900 netif_wake_queue(dev);
4a71df50
FB		 901 return NETDEV_TX_OK;
902}
903
39423440 904static int __qeth_l2_open(struct net_device *dev)
4a71df50 905{
509e2562 906 struct qeth_card *card = dev->ml_priv;
a1c3ed4c 907 int rc = 0;
4a71df50 908
847a50fd 909 QETH_CARD_TEXT(card, 4, "qethopen");
39423440
UB		 910 if (card->state == CARD_STATE_UP)
911 return rc;
4a71df50
FB		 912 if (card->state != CARD_STATE_SOFTSETUP)
913 return -ENODEV;
914
915 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
916 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
847a50fd 917 QETH_CARD_TEXT(card, 4, "nomacadr");
4a71df50
FB		 918 return -EPERM;
919 }
920 card->data.state = CH_STATE_UP;
921 card->state = CARD_STATE_UP;
4a71df50
FB		 922 netif_start_queue(dev);
923
a1c3ed4c
FB		 924 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
925 napi_enable(&card->napi);
926 napi_schedule(&card->napi);
927 } else
928 rc = -EIO;
929 return rc;
4a71df50
FB		 930}
931
39423440
UB		 932static int qeth_l2_open(struct net_device *dev)
933{
934 struct qeth_card *card = dev->ml_priv;
935
936 QETH_CARD_TEXT(card, 5, "qethope_");
937 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
938 QETH_CARD_TEXT(card, 3, "openREC");
939 return -ERESTARTSYS;
940 }
941 return __qeth_l2_open(dev);
942}
943
4a71df50
FB		 944static int qeth_l2_stop(struct net_device *dev)
945{
509e2562 946 struct qeth_card *card = dev->ml_priv;
4a71df50 947
847a50fd 948 QETH_CARD_TEXT(card, 4, "qethstop");
4a71df50 949 netif_tx_disable(dev);
a1c3ed4c 950 if (card->state == CARD_STATE_UP) {
4a71df50 951 card->state = CARD_STATE_SOFTSETUP;
a1c3ed4c
FB		 952 napi_disable(&card->napi);
953 }
4a71df50
FB		 954 return 0;
955}
956
957static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
958{
959 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
960
b4d72c08 961 qeth_l2_create_device_attributes(&gdev->dev);
4a71df50 962 INIT_LIST_HEAD(&card->vid_list);
fe5c8028 963 hash_init(card->mac_htable);
4a71df50 964 card->options.layer2 = 1;
1da74b1c 965 card->info.hwtrap = 0;
4a71df50
FB		 966 return 0;
967}
968
969static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
970{
971 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
972
b4d72c08 973 qeth_l2_remove_device_attributes(&cgdev->dev);
f2148565 974 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 975 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
976
70919e23 977 if (cgdev->state == CCWGROUP_ONLINE)
4a71df50 978 qeth_l2_set_offline(cgdev);
4a71df50
FB		 979
980 if (card->dev) {
7831b4ff 981 netif_napi_del(&card->napi);
4a71df50
FB		 982 unregister_netdev(card->dev);
983 card->dev = NULL;
984 }
4a71df50
FB		 985 return;
986}
987
0fc0b732 988static const struct ethtool_ops qeth_l2_ethtool_ops = {
4a71df50 989 .get_link = ethtool_op_get_link,
4a71df50
FB		 990 .get_strings = qeth_core_get_strings,
991 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 992 .get_sset_count = qeth_core_get_sset_count,
4a71df50 993 .get_drvinfo = qeth_core_get_drvinfo,
3f9975aa 994 .get_settings = qeth_core_ethtool_get_settings,
4a71df50
FB		 995};
996
0fc0b732 997static const struct ethtool_ops qeth_l2_osn_ops = {
4a71df50
FB		 998 .get_strings = qeth_core_get_strings,
999 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 1000 .get_sset_count = qeth_core_get_sset_count,
4a71df50
FB		 1001 .get_drvinfo = qeth_core_get_drvinfo,
1002};
1003
3d58cefd 1004static const struct net_device_ops qeth_l2_netdev_ops = {
8403b13c
FB		 1005 .ndo_open = qeth_l2_open,
1006 .ndo_stop = qeth_l2_stop,
1007 .ndo_get_stats = qeth_get_stats,
1008 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1009 .ndo_validate_addr = eth_validate_addr,
fe5c8028 1010 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
942d6984 1011 .ndo_do_ioctl = qeth_do_ioctl,
8403b13c
FB		 1012 .ndo_set_mac_address = qeth_l2_set_mac_address,
1013 .ndo_change_mtu = qeth_change_mtu,
1014 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1015 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1016 .ndo_tx_timeout = qeth_tx_timeout,
8f43fb00
TR		 1017 .ndo_fix_features = qeth_fix_features,
1018 .ndo_set_features = qeth_set_features
8403b13c
FB		 1019};
1020
4a71df50
FB		 1021static int qeth_l2_setup_netdev(struct qeth_card *card)
1022{
1023 switch (card->info.type) {
4a71df50 1024 case QETH_CARD_TYPE_IQD:
c835a677
TG		 1025 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1026 ether_setup);
4a71df50
FB		 1027 break;
1028 case QETH_CARD_TYPE_OSN:
c835a677
TG		 1029 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1030 ether_setup);
4a71df50
FB		 1031 card->dev->flags |= IFF_NOARP;
1032 break;
1033 default:
1034 card->dev = alloc_etherdev(0);
1035 }
1036
1037 if (!card->dev)
1038 return -ENODEV;
1039
509e2562 1040 card->dev->ml_priv = card;
4a71df50 1041 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
4a71df50 1042 card->dev->mtu = card->info.initial_mtu;
46b3ef4c
JW		 1043 card->dev->min_mtu = 64;
1044 card->dev->max_mtu = ETH_MAX_MTU;
8403b13c 1045 card->dev->netdev_ops = &qeth_l2_netdev_ops;
7ad24ea4
WK		 1046 card->dev->ethtool_ops =
1047 (card->info.type != QETH_CARD_TYPE_OSN) ?
1048 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
f646968f 1049 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
4d7def2a 1050 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
8f43fb00 1051 card->dev->hw_features = NETIF_F_SG;
9bdc4411 1052 card->dev->vlan_features = NETIF_F_SG;
8f43fb00 1053 /* OSA 3S and earlier has no RX/TX support */
9bdc4411 1054 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
8f43fb00 1055 card->dev->hw_features |= NETIF_F_IP_CSUM;
9bdc4411
HW		 1056 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1057 }
1058 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
8f43fb00 1059 card->dev->hw_features |= NETIF_F_RXCSUM;
9bdc4411
HW		 1060 card->dev->vlan_features |= NETIF_F_RXCSUM;
1061 }
4d7def2a 1062 }
4a71df50
FB		 1063 card->info.broadcast_capable = 1;
1064 qeth_l2_request_initial_mac(card);
d52aec97
EC		 1065 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
1066 PAGE_SIZE;
4a71df50 1067 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
a1c3ed4c 1068 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
e5ebe632 1069 netif_carrier_off(card->dev);
4a71df50
FB		 1070 return register_netdev(card->dev);
1071}
1072
4d7def2a
TR		 1073static int qeth_l2_start_ipassists(struct qeth_card *card)
1074{
1075 /* configure isolation level */
1076 if (qeth_set_access_ctrl_online(card, 0))
1077 return -ENODEV;
4d7def2a
TR		 1078 return 0;
1079}
1080
4a71df50
FB		 1081static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1082{
1083 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1084 int rc = 0;
1085 enum qeth_card_states recover_flag;
1086
9dc48ccc 1087 mutex_lock(&card->discipline_mutex);
c4949f07 1088 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 1089 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1090 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50 1091
4a71df50 1092 recover_flag = card->state;
4a71df50
FB		 1093 rc = qeth_core_hardsetup_card(card);
1094 if (rc) {
1aec42bc 1095 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
aa909224 1096 rc = -ENODEV;
4a71df50
FB		 1097 goto out_remove;
1098 }
c044dc21
EC		 1099 qeth_bridgeport_query_support(card);
1100 if (card->options.sbp.supported_funcs)
1101 dev_info(&card->gdev->dev,
9c23f4da 1102 "The device represents a Bridge Capable Port\n");
395672e0 1103 qeth_trace_features(card);
4a71df50 1104
aa909224
UB		 1105 if (!card->dev && qeth_l2_setup_netdev(card)) {
1106 rc = -ENODEV;
4a71df50 1107 goto out_remove;
aa909224 1108 }
4a71df50
FB		 1109
1110 if (card->info.type != QETH_CARD_TYPE_OSN)
1111 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1112
1da74b1c
FB		 1113 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1114 if (card->info.hwtrap &&
1115 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1116 card->info.hwtrap = 0;
1117 } else
1118 card->info.hwtrap = 0;
1119
b4d72c08
EC		 1120 qeth_l2_setup_bridgeport_attrs(card);
1121
4a71df50 1122 card->state = CARD_STATE_HARDSETUP;
a1c3ed4c 1123 memset(&card->rx, 0, sizeof(struct qeth_rx));
4a71df50
FB		 1124 qeth_print_status_message(card);
1125
1126 /* softsetup */
d11ba0c4 1127 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50 1128
5113fec0 1129 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
0f54761d 1130 (card->info.type == QETH_CARD_TYPE_OSX)) {
8f43fb00
TR		 1131 rc = qeth_l2_start_ipassists(card);
1132 if (rc)
0f54761d 1133 goto out_remove;
0f54761d 1134 }
5113fec0
UB		 1135
1136 if (card->info.type != QETH_CARD_TYPE_OSN &&
1137 card->info.type != QETH_CARD_TYPE_OSM)
70919e23 1138 qeth_l2_process_vlans(card);
4a71df50
FB		 1139
1140 netif_tx_disable(card->dev);
1141
1142 rc = qeth_init_qdio_queues(card);
1143 if (rc) {
d11ba0c4 1144 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
aa909224 1145 rc = -ENODEV;
4a71df50
FB		 1146 goto out_remove;
1147 }
1148 card->state = CARD_STATE_SOFTSETUP;
2b6203bb
UB		 1149 if (card->lan_online)
1150 netif_carrier_on(card->dev);
1151 else
1152 netif_carrier_off(card->dev);
4a71df50
FB		 1153
1154 qeth_set_allowed_threads(card, 0xffffffff, 0);
1155 if (recover_flag == CARD_STATE_RECOVER) {
1156 if (recovery_mode &&
1157 card->info.type != QETH_CARD_TYPE_OSN) {
39423440 1158 __qeth_l2_open(card->dev);
4a71df50
FB		 1159 } else {
1160 rtnl_lock();
1161 dev_open(card->dev);
1162 rtnl_unlock();
1163 }
1164 /* this also sets saved unicast addresses */
fe5c8028 1165 qeth_l2_set_rx_mode(card->dev);
e830baa9
HW		 1166 rtnl_lock();
1167 qeth_recover_features(card->dev);
1168 rtnl_unlock();
4a71df50
FB		 1169 }
1170 /* let user_space know that device is online */
1171 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
c4949f07 1172 mutex_unlock(&card->conf_mutex);
9dc48ccc 1173 mutex_unlock(&card->discipline_mutex);
4a71df50 1174 return 0;
aa909224 1175
4a71df50 1176out_remove:
4a71df50
FB		 1177 qeth_l2_stop_card(card, 0);
1178 ccw_device_set_offline(CARD_DDEV(card));
1179 ccw_device_set_offline(CARD_WDEV(card));
1180 ccw_device_set_offline(CARD_RDEV(card));
22ae2790 1181 qdio_free(CARD_DDEV(card));
4a71df50
FB		 1182 if (recover_flag == CARD_STATE_RECOVER)
1183 card->state = CARD_STATE_RECOVER;
1184 else
1185 card->state = CARD_STATE_DOWN;
c4949f07 1186 mutex_unlock(&card->conf_mutex);
9dc48ccc 1187 mutex_unlock(&card->discipline_mutex);
aa909224 1188 return rc;
4a71df50
FB		 1189}
1190
1191static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1192{
1193 return __qeth_l2_set_online(gdev, 0);
1194}
1195
1196static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1197 int recovery_mode)
1198{
1199 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1200 int rc = 0, rc2 = 0, rc3 = 0;
1201 enum qeth_card_states recover_flag;
1202
9dc48ccc 1203 mutex_lock(&card->discipline_mutex);
c4949f07 1204 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 1205 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1206 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1207
1208 if (card->dev && netif_carrier_ok(card->dev))
1209 netif_carrier_off(card->dev);
1210 recover_flag = card->state;
1da74b1c
FB		 1211 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1212 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1213 card->info.hwtrap = 1;
1214 }
0f5623c9 1215 qeth_l2_stop_card(card, recovery_mode);
4a71df50
FB		 1216 rc = ccw_device_set_offline(CARD_DDEV(card));
1217 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1218 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1219 if (!rc)
1220 rc = (rc2) ? rc2 : rc3;
1221 if (rc)
d11ba0c4 1222 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
22ae2790 1223 qdio_free(CARD_DDEV(card));
4a71df50
FB		 1224 if (recover_flag == CARD_STATE_UP)
1225 card->state = CARD_STATE_RECOVER;
1226 /* let user_space know that device is offline */
1227 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
c4949f07 1228 mutex_unlock(&card->conf_mutex);
9dc48ccc 1229 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 1230 return 0;
1231}
1232
1233static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1234{
1235 return __qeth_l2_set_offline(cgdev, 0);
1236}
1237
1238static int qeth_l2_recover(void *ptr)
1239{
1240 struct qeth_card *card;
1241 int rc = 0;
1242
1243 card = (struct qeth_card *) ptr;
847a50fd 1244 QETH_CARD_TEXT(card, 2, "recover1");
4a71df50
FB		 1245 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1246 return 0;
847a50fd 1247 QETH_CARD_TEXT(card, 2, "recover2");
74eacdb9
FB		 1248 dev_warn(&card->gdev->dev,
1249 "A recovery process has been started for the device\n");
65d8013c 1250 qeth_set_recovery_task(card);
4a71df50
FB		 1251 __qeth_l2_set_offline(card->gdev, 1);
1252 rc = __qeth_l2_set_online(card->gdev, 1);
4a71df50 1253 if (!rc)
74eacdb9
FB		 1254 dev_info(&card->gdev->dev,
1255 "Device successfully recovered!\n");
28a7e4c9 1256 else {
0f54761d
SR		 1257 qeth_close_dev(card);
1258 dev_warn(&card->gdev->dev, "The qeth device driver "
2efaf5ff 1259 "failed to recover an error on the device\n");
28a7e4c9 1260 }
65d8013c 1261 qeth_clear_recovery_task(card);
a1c3ed4c
FB		 1262 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1263 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
4a71df50
FB		 1264 return 0;
1265}
1266
1267static int __init qeth_l2_init(void)
1268{
74eacdb9 1269 pr_info("register layer 2 discipline\n");
4a71df50
FB		 1270 return 0;
1271}
1272
1273static void __exit qeth_l2_exit(void)
1274{
74eacdb9 1275 pr_info("unregister layer 2 discipline\n");
4a71df50
FB		 1276}
1277
1278static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1279{
1280 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
f78ac2bb 1281 qeth_set_allowed_threads(card, 0, 1);
1da74b1c
FB		 1282 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1283 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
4a71df50
FB		 1284 qeth_qdio_clear_card(card, 0);
1285 qeth_clear_qdio_buffers(card);
22ae2790 1286 qdio_free(CARD_DDEV(card));
4a71df50
FB		 1287}
1288
bbcfcdc8
FB		 1289static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1290{
1291 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1292
1293 if (card->dev)
1294 netif_device_detach(card->dev);
1295 qeth_set_allowed_threads(card, 0, 1);
1296 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1297 if (gdev->state == CCWGROUP_OFFLINE)
1298 return 0;
1299 if (card->state == CARD_STATE_UP) {
1da74b1c
FB		 1300 if (card->info.hwtrap)
1301 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
bbcfcdc8
FB		 1302 __qeth_l2_set_offline(card->gdev, 1);
1303 } else
1304 __qeth_l2_set_offline(card->gdev, 0);
1305 return 0;
1306}
1307
1308static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1309{
1310 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1311 int rc = 0;
1312
1313 if (gdev->state == CCWGROUP_OFFLINE)
1314 goto out;
1315
1316 if (card->state == CARD_STATE_RECOVER) {
1317 rc = __qeth_l2_set_online(card->gdev, 1);
1318 if (rc) {
869da90b
UB		 1319 rtnl_lock();
1320 dev_close(card->dev);
1321 rtnl_unlock();
bbcfcdc8
FB		 1322 }
1323 } else
1324 rc = __qeth_l2_set_online(card->gdev, 0);
1325out:
1326 qeth_set_allowed_threads(card, 0xffffffff, 0);
1327 if (card->dev)
1328 netif_device_attach(card->dev);
1329 if (rc)
1330 dev_warn(&card->gdev->dev, "The qeth device driver "
1331 "failed to recover an error on the device\n");
1332 return rc;
1333}
1334
c044dc21
EC		 1335/* Returns zero if the command is successfully "consumed" */
1336static int qeth_l2_control_event(struct qeth_card *card,
1337 struct qeth_ipa_cmd *cmd)
1338{
1339 switch (cmd->hdr.command) {
9c23f4da
EC		 1340 case IPA_CMD_SETBRIDGEPORT_OSA:
1341 case IPA_CMD_SETBRIDGEPORT_IQD:
c044dc21
EC		 1342 if (cmd->data.sbp.hdr.command_code ==
1343 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1344 qeth_bridge_state_change(card, cmd);
1345 return 0;
1346 } else
1347 return 1;
1348 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1349 qeth_bridge_host_event(card, cmd);
1350 return 0;
1351 default:
1352 return 1;
1353 }
1354}
1355
c041f2d4
SO		 1356struct qeth_discipline qeth_l2_discipline = {
1357 .start_poll = qeth_qdio_start_poll,
1358 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1359 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1360 .recover = qeth_l2_recover,
1361 .setup = qeth_l2_probe_device,
4a71df50
FB		 1362 .remove = qeth_l2_remove_device,
1363 .set_online = qeth_l2_set_online,
1364 .set_offline = qeth_l2_set_offline,
1365 .shutdown = qeth_l2_shutdown,
bbcfcdc8
FB		 1366 .freeze = qeth_l2_pm_suspend,
1367 .thaw = qeth_l2_pm_resume,
1368 .restore = qeth_l2_pm_resume,
942d6984 1369 .do_ioctl = NULL,
c044dc21 1370 .control_event_handler = qeth_l2_control_event,
4a71df50 1371};
c041f2d4 1372EXPORT_SYMBOL_GPL(qeth_l2_discipline);
4a71df50
FB		 1373
1374static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1375 struct qeth_cmd_buffer *iob)
1376{
1377 unsigned long flags;
1378 int rc = 0;
1379
847a50fd 1380 QETH_CARD_TEXT(card, 5, "osndctrd");
4a71df50
FB		 1381
1382 wait_event(card->wait_q,
1383 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1384 qeth_prepare_control_data(card, len, iob);
847a50fd 1385 QETH_CARD_TEXT(card, 6, "osnoirqp");
4a71df50
FB		 1386 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1387 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1388 (addr_t) iob, 0, 0);
1389 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1390 if (rc) {
14cc21b6 1391 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
4a71df50 1392 "ccw_device_start rc = %i\n", rc);
847a50fd 1393 QETH_CARD_TEXT_(card, 2, " err%d", rc);
4a71df50
FB		 1394 qeth_release_buffer(iob->channel, iob);
1395 atomic_set(&card->write.irq_pending, 0);
1396 wake_up(&card->wait_q);
1397 }
1398 return rc;
1399}
1400
1401static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1402 struct qeth_cmd_buffer *iob, int data_len)
1403{
1404 u16 s1, s2;
1405
847a50fd 1406 QETH_CARD_TEXT(card, 4, "osndipa");
4a71df50
FB		 1407
1408 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1409 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1410 s2 = (u16)data_len;
1411 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1412 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1413 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1414 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1415 return qeth_osn_send_control_data(card, s1, iob);
1416}
1417
1418int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1419{
1420 struct qeth_cmd_buffer *iob;
1421 struct qeth_card *card;
1422 int rc;
1423
4a71df50
FB		 1424 if (!dev)
1425 return -ENODEV;
509e2562 1426 card = dev->ml_priv;
4a71df50
FB		 1427 if (!card)
1428 return -ENODEV;
847a50fd 1429 QETH_CARD_TEXT(card, 2, "osnsdmc");
c3521254 1430 if (!qeth_card_hw_is_reachable(card))
4a71df50
FB		 1431 return -ENODEV;
1432 iob = qeth_wait_for_buffer(&card->write);
1433 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1434 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1435 return rc;
1436}
1437EXPORT_SYMBOL(qeth_osn_assist);
1438
1439int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1440 int (*assist_cb)(struct net_device *, void *),
1441 int (*data_cb)(struct sk_buff *))
1442{
1443 struct qeth_card *card;
1444
4a71df50
FB		 1445 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1446 if (*dev == NULL)
1447 return -ENODEV;
509e2562 1448 card = (*dev)->ml_priv;
4a71df50
FB		 1449 if (!card)
1450 return -ENODEV;
847a50fd 1451 QETH_CARD_TEXT(card, 2, "osnreg");
4a71df50
FB		 1452 if ((assist_cb == NULL) || (data_cb == NULL))
1453 return -EINVAL;
1454 card->osn_info.assist_cb = assist_cb;
1455 card->osn_info.data_cb = data_cb;
1456 return 0;
1457}
1458EXPORT_SYMBOL(qeth_osn_register);
1459
1460void qeth_osn_deregister(struct net_device *dev)
1461{
1462 struct qeth_card *card;
1463
4a71df50
FB		 1464 if (!dev)
1465 return;
509e2562 1466 card = dev->ml_priv;
4a71df50
FB		 1467 if (!card)
1468 return;
847a50fd 1469 QETH_CARD_TEXT(card, 2, "osndereg");
4a71df50
FB		 1470 card->osn_info.assist_cb = NULL;
1471 card->osn_info.data_cb = NULL;
1472 return;
1473}
1474EXPORT_SYMBOL(qeth_osn_deregister);
1475
b4d72c08
EC		 1476/* SETBRIDGEPORT support, async notifications */
1477
9f48b9db
EC		 1478enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1479
1480/**
1481 * qeth_bridge_emit_host_event() - bridgeport address change notification
1482 * @card: qeth_card structure pointer, for udev events.
1483 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1484 * and reset token and addr_lnid are unused and may be NULL.
1485 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1486 * object, 0 - addition of an object.
1487 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1488 * @token: "network token" structure identifying physical address of the port.
1489 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1490 *
1491 * This function is called when registrations and deregistrations are
1492 * reported by the hardware, and also when notifications are enabled -
1493 * for all currently registered addresses.
1494 */
1495static void qeth_bridge_emit_host_event(struct qeth_card *card,
1496 enum qeth_an_event_type evtype,
1497 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1498{
1499 char str[7][32];
1500 char *env[8];
1501 int i = 0;
1502
1503 switch (evtype) {
1504 case anev_reg_unreg:
1505 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1506 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1507 ? "deregister" : "register");
1508 env[i] = str[i]; i++;
1509 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1510 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1511 addr_lnid->lnid);
1512 env[i] = str[i]; i++;
1513 }
1514 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
9846e70b 1515 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
4d7def2a 1516 addr_lnid->mac);
9f48b9db
EC		 1517 env[i] = str[i]; i++;
1518 }
1519 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1520 token->cssid, token->ssid, token->devnum);
1521 env[i] = str[i]; i++;
1522 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1523 env[i] = str[i]; i++;
1524 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1525 token->chpid);
1526 env[i] = str[i]; i++;
1527 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1528 env[i] = str[i]; i++;
1529 break;
1530 case anev_abort:
1531 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1532 env[i] = str[i]; i++;
1533 break;
1534 case anev_reset:
1535 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1536 env[i] = str[i]; i++;
1537 break;
1538 }
1539 env[i] = NULL;
1540 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1541}
1542
b4d72c08
EC		 1543struct qeth_bridge_state_data {
1544 struct work_struct worker;
1545 struct qeth_card *card;
1546 struct qeth_sbp_state_change qports;
1547};
1548
1549static void qeth_bridge_state_change_worker(struct work_struct *work)
1550{
1551 struct qeth_bridge_state_data *data =
1552 container_of(work, struct qeth_bridge_state_data, worker);
1553 /* We are only interested in the first entry - local port */
1554 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1555 char env_locrem[32];
1556 char env_role[32];
1557 char env_state[32];
1558 char *env[] = {
1559 env_locrem,
1560 env_role,
1561 env_state,
1562 NULL
1563 };
1564
1565 /* Role should not change by itself, but if it did, */
1566 /* information from the hardware is authoritative. */
1567 mutex_lock(&data->card->conf_mutex);
1568 data->card->options.sbp.role = entry->role;
1569 mutex_unlock(&data->card->conf_mutex);
1570
1571 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1572 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1573 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1574 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1575 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1576 "<INVALID>");
1577 snprintf(env_state, sizeof(env_state), "STATE=%s",
1578 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1579 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1580 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1581 "<INVALID>");
1582 kobject_uevent_env(&data->card->gdev->dev.kobj,
1583 KOBJ_CHANGE, env);
1584 kfree(data);
1585}
1586
c044dc21
EC		 1587static void qeth_bridge_state_change(struct qeth_card *card,
1588 struct qeth_ipa_cmd *cmd)
b4d72c08
EC		 1589{
1590 struct qeth_sbp_state_change *qports =
1591 &cmd->data.sbp.data.state_change;
1592 struct qeth_bridge_state_data *data;
1593 int extrasize;
1594
1595 QETH_CARD_TEXT(card, 2, "brstchng");
1596 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
8a593148 1597 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
b4d72c08
EC		 1598 return;
1599 }
1600 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1601 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1602 GFP_ATOMIC);
1603 if (!data) {
1604 QETH_CARD_TEXT(card, 2, "BPSalloc");
1605 return;
1606 }
1607 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1608 data->card = card;
1609 memcpy(&data->qports, qports,
1610 sizeof(struct qeth_sbp_state_change) + extrasize);
1611 queue_work(qeth_wq, &data->worker);
1612}
b4d72c08 1613
9f48b9db
EC		 1614struct qeth_bridge_host_data {
1615 struct work_struct worker;
1616 struct qeth_card *card;
1617 struct qeth_ipacmd_addr_change hostevs;
1618};
1619
1620static void qeth_bridge_host_event_worker(struct work_struct *work)
1621{
1622 struct qeth_bridge_host_data *data =
1623 container_of(work, struct qeth_bridge_host_data, worker);
1624 int i;
1625
1626 if (data->hostevs.lost_event_mask) {
1627 dev_info(&data->card->gdev->dev,
9c23f4da 1628"Address notification from the Bridge Port stopped %s (%s)\n",
9f48b9db
EC		 1629 data->card->dev->name,
1630 (data->hostevs.lost_event_mask == 0x01)
1631 ? "Overflow"
1632 : (data->hostevs.lost_event_mask == 0x02)
1633 ? "Bridge port state change"
1634 : "Unknown reason");
1635 mutex_lock(&data->card->conf_mutex);
1636 data->card->options.sbp.hostnotification = 0;
1637 mutex_unlock(&data->card->conf_mutex);
1638 qeth_bridge_emit_host_event(data->card, anev_abort,
1639 0, NULL, NULL);
1640 } else
1641 for (i = 0; i < data->hostevs.num_entries; i++) {
1642 struct qeth_ipacmd_addr_change_entry *entry =
1643 &data->hostevs.entry[i];
1644 qeth_bridge_emit_host_event(data->card,
1645 anev_reg_unreg,
1646 entry->change_code,
1647 &entry->token, &entry->addr_lnid);
1648 }
1649 kfree(data);
1650}
1651
c044dc21
EC		 1652static void qeth_bridge_host_event(struct qeth_card *card,
1653 struct qeth_ipa_cmd *cmd)
9f48b9db
EC		 1654{
1655 struct qeth_ipacmd_addr_change *hostevs =
1656 &cmd->data.addrchange;
1657 struct qeth_bridge_host_data *data;
1658 int extrasize;
1659
1660 QETH_CARD_TEXT(card, 2, "brhostev");
1661 if (cmd->hdr.return_code != 0x0000) {
1662 if (cmd->hdr.return_code == 0x0010) {
1663 if (hostevs->lost_event_mask == 0x00)
1664 hostevs->lost_event_mask = 0xff;
1665 } else {
1666 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1667 cmd->hdr.return_code);
1668 return;
1669 }
1670 }
1671 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1672 hostevs->num_entries;
1673 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1674 GFP_ATOMIC);
1675 if (!data) {
1676 QETH_CARD_TEXT(card, 2, "BPHalloc");
1677 return;
1678 }
1679 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1680 data->card = card;
1681 memcpy(&data->hostevs, hostevs,
1682 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1683 queue_work(qeth_wq, &data->worker);
1684}
9f48b9db 1685
b4d72c08
EC		 1686/* SETBRIDGEPORT support; sending commands */
1687
1688struct _qeth_sbp_cbctl {
1689 u16 ipa_rc;
1690 u16 cmd_rc;
1691 union {
1692 u32 supported;
1693 struct {
1694 enum qeth_sbp_roles *role;
1695 enum qeth_sbp_states *state;
1696 } qports;
1697 } data;
1698};
1699
1700/**
1701 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1702 * @card: qeth_card structure pointer, for debug messages.
1703 * @cbctl: state structure with hardware return codes.
1704 * @setcmd: IPA command code
1705 *
1706 * Returns negative errno-compatible error indication or 0 on success.
1707 */
1708static int qeth_bridgeport_makerc(struct qeth_card *card,
1709 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1710{
1711 int rc;
9c23f4da 1712 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
b4d72c08 1713
9c23f4da
EC		 1714 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1715 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
b4d72c08
EC		 1716 switch (cbctl->cmd_rc) {
1717 case 0x0000:
1718 rc = 0;
1719 break;
9c23f4da 1720 case 0x2B04:
b4d72c08 1721 case 0x0004:
ffb95251 1722 rc = -EOPNOTSUPP;
b4d72c08 1723 break;
9c23f4da 1724 case 0x2B0C:
b4d72c08
EC		 1725 case 0x000C: /* Not configured as bridge Port */
1726 rc = -ENODEV; /* maybe not the best code here? */
1727 dev_err(&card->gdev->dev,
9c23f4da 1728 "The device is not configured as a Bridge Port\n");
b4d72c08 1729 break;
1b05cf62
EC		 1730 case 0x2B10:
1731 case 0x0010: /* OS mismatch */
1732 rc = -EPERM;
1733 dev_err(&card->gdev->dev,
1734 "A Bridge Port is already configured by a different operating system\n");
1735 break;
9c23f4da 1736 case 0x2B14:
b4d72c08
EC		 1737 case 0x0014: /* Another device is Primary */
1738 switch (setcmd) {
1739 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1740 rc = -EEXIST;
1741 dev_err(&card->gdev->dev,
9c23f4da 1742 "The LAN already has a primary Bridge Port\n");
b4d72c08
EC		 1743 break;
1744 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1745 rc = -EBUSY;
1746 dev_err(&card->gdev->dev,
9c23f4da 1747 "The device is already a primary Bridge Port\n");
b4d72c08
EC		 1748 break;
1749 default:
1750 rc = -EIO;
1751 }
1752 break;
9c23f4da 1753 case 0x2B18:
b4d72c08
EC		 1754 case 0x0018: /* This device is currently Secondary */
1755 rc = -EBUSY;
1756 dev_err(&card->gdev->dev,
9c23f4da 1757 "The device is already a secondary Bridge Port\n");
b4d72c08 1758 break;
9c23f4da 1759 case 0x2B1C:
b4d72c08
EC		 1760 case 0x001C: /* Limit for Secondary devices reached */
1761 rc = -EEXIST;
1762 dev_err(&card->gdev->dev,
9c23f4da 1763 "The LAN cannot have more secondary Bridge Ports\n");
b4d72c08 1764 break;
9c23f4da 1765 case 0x2B24:
b4d72c08
EC		 1766 case 0x0024: /* This device is currently Primary */
1767 rc = -EBUSY;
1768 dev_err(&card->gdev->dev,
9c23f4da 1769 "The device is already a primary Bridge Port\n");
b4d72c08 1770 break;
9c23f4da 1771 case 0x2B20:
b4d72c08
EC		 1772 case 0x0020: /* Not authorized by zManager */
1773 rc = -EACCES;
1774 dev_err(&card->gdev->dev,
9c23f4da 1775 "The device is not authorized to be a Bridge Port\n");
b4d72c08
EC		 1776 break;
1777 default:
1778 rc = -EIO;
1779 }
9c23f4da
EC		 1780 else
1781 switch (cbctl->ipa_rc) {
1782 case IPA_RC_NOTSUPP:
ffb95251 1783 rc = -EOPNOTSUPP;
9c23f4da
EC		 1784 break;
1785 case IPA_RC_UNSUPPORTED_COMMAND:
ffb95251 1786 rc = -EOPNOTSUPP;
9c23f4da
EC		 1787 break;
1788 default:
1789 rc = -EIO;
1790 }
1791
b4d72c08
EC		 1792 if (rc) {
1793 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1794 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1795 }
1796 return rc;
1797}
1798
9c23f4da
EC		 1799static inline int ipa_cmd_sbp(struct qeth_card *card)
1800{
1801 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1802 IPA_CMD_SETBRIDGEPORT_IQD :
1803 IPA_CMD_SETBRIDGEPORT_OSA;
1804}
1805
b4d72c08
EC		 1806static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1807 struct qeth_reply *reply, unsigned long data)
1808{
1809 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1810 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1811 QETH_CARD_TEXT(card, 2, "brqsupcb");
1812 cbctl->ipa_rc = cmd->hdr.return_code;
1813 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1814 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1815 cbctl->data.supported =
1816 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1817 } else {
1818 cbctl->data.supported = 0;
1819 }
1820 return 0;
1821}
1822
1823/**
1824 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1825 * @card: qeth_card structure pointer.
1826 *
1827 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1828 * strucutre: card->options.sbp.supported_funcs.
1829 */
c044dc21 1830static void qeth_bridgeport_query_support(struct qeth_card *card)
b4d72c08
EC		 1831{
1832 struct qeth_cmd_buffer *iob;
1833 struct qeth_ipa_cmd *cmd;
1834 struct _qeth_sbp_cbctl cbctl;
1835
1836 QETH_CARD_TEXT(card, 2, "brqsuppo");
9c23f4da 1837 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1aec42bc
TR		 1838 if (!iob)
1839 return;
b4d72c08
EC		 1840 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1841 cmd->data.sbp.hdr.cmdlength =
1842 sizeof(struct qeth_ipacmd_sbp_hdr) +
1843 sizeof(struct qeth_sbp_query_cmds_supp);
1844 cmd->data.sbp.hdr.command_code =
1845 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1846 cmd->data.sbp.hdr.used_total = 1;
1847 cmd->data.sbp.hdr.seq_no = 1;
1848 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1849 (void *)&cbctl) ||
1850 qeth_bridgeport_makerc(card, &cbctl,
1851 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1852 /* non-zero makerc signifies failure, and produce messages */
1853 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1854 return;
1855 }
1856 card->options.sbp.supported_funcs = cbctl.data.supported;
1857}
b4d72c08
EC		 1858
1859static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1860 struct qeth_reply *reply, unsigned long data)
1861{
1862 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1863 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1864 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1865
1866 QETH_CARD_TEXT(card, 2, "brqprtcb");
1867 cbctl->ipa_rc = cmd->hdr.return_code;
1868 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1869 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1870 return 0;
1871 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1872 cbctl->cmd_rc = 0xffff;
1873 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1874 return 0;
1875 }
1876 /* first entry contains the state of the local port */
1877 if (qports->num_entries > 0) {
1878 if (cbctl->data.qports.role)
1879 *cbctl->data.qports.role = qports->entry[0].role;
1880 if (cbctl->data.qports.state)
1881 *cbctl->data.qports.state = qports->entry[0].state;
1882 }
1883 return 0;
1884}
1885
1886/**
1887 * qeth_bridgeport_query_ports() - query local bridgeport status.
1888 * @card: qeth_card structure pointer.
1889 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1890 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1891 *
1892 * Returns negative errno-compatible error indication or 0 on success.
1893 *
1894 * 'role' and 'state' are not updated in case of hardware operation failure.
1895 */
1896int qeth_bridgeport_query_ports(struct qeth_card *card,
1897 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1898{
1899 int rc = 0;
1900 struct qeth_cmd_buffer *iob;
1901 struct qeth_ipa_cmd *cmd;
1902 struct _qeth_sbp_cbctl cbctl = {
1903 .data = {
1904 .qports = {
1905 .role = role,
1906 .state = state,
1907 },
1908 },
1909 };
1910
1911 QETH_CARD_TEXT(card, 2, "brqports");
1912 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1913 return -EOPNOTSUPP;
9c23f4da 1914 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1aec42bc
TR		 1915 if (!iob)
1916 return -ENOMEM;
b4d72c08
EC		 1917 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1918 cmd->data.sbp.hdr.cmdlength =
1919 sizeof(struct qeth_ipacmd_sbp_hdr);
1920 cmd->data.sbp.hdr.command_code =
1921 IPA_SBP_QUERY_BRIDGE_PORTS;
1922 cmd->data.sbp.hdr.used_total = 1;
1923 cmd->data.sbp.hdr.seq_no = 1;
1924 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1925 (void *)&cbctl);
c88394e7 1926 if (rc < 0)
b4d72c08 1927 return rc;
c88394e7 1928 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
b4d72c08
EC		 1929}
1930EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1931
1932static int qeth_bridgeport_set_cb(struct qeth_card *card,
1933 struct qeth_reply *reply, unsigned long data)
1934{
1935 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1936 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1937 QETH_CARD_TEXT(card, 2, "brsetrcb");
1938 cbctl->ipa_rc = cmd->hdr.return_code;
1939 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1940 return 0;
1941}
1942
1943/**
1944 * qeth_bridgeport_setrole() - Assign primary role to the port.
1945 * @card: qeth_card structure pointer.
1946 * @role: Role to assign.
1947 *
1948 * Returns negative errno-compatible error indication or 0 on success.
1949 */
1950int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1951{
1952 int rc = 0;
1953 int cmdlength;
1954 struct qeth_cmd_buffer *iob;
1955 struct qeth_ipa_cmd *cmd;
1956 struct _qeth_sbp_cbctl cbctl;
1957 enum qeth_ipa_sbp_cmd setcmd;
1958
1959 QETH_CARD_TEXT(card, 2, "brsetrol");
1960 switch (role) {
1961 case QETH_SBP_ROLE_NONE:
1962 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1963 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1964 sizeof(struct qeth_sbp_reset_role);
1965 break;
1966 case QETH_SBP_ROLE_PRIMARY:
1967 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1968 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1969 sizeof(struct qeth_sbp_set_primary);
1970 break;
1971 case QETH_SBP_ROLE_SECONDARY:
1972 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1973 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1974 sizeof(struct qeth_sbp_set_secondary);
1975 break;
1976 default:
1977 return -EINVAL;
1978 }
1979 if (!(card->options.sbp.supported_funcs & setcmd))
1980 return -EOPNOTSUPP;
9c23f4da 1981 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1aec42bc
TR		 1982 if (!iob)
1983 return -ENOMEM;
b4d72c08
EC		 1984 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1985 cmd->data.sbp.hdr.cmdlength = cmdlength;
1986 cmd->data.sbp.hdr.command_code = setcmd;
1987 cmd->data.sbp.hdr.used_total = 1;
1988 cmd->data.sbp.hdr.seq_no = 1;
1989 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1990 (void *)&cbctl);
c88394e7 1991 if (rc < 0)
b4d72c08 1992 return rc;
c88394e7 1993 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
b4d72c08
EC		 1994}
1995
9f48b9db
EC		 1996/**
1997 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1998 * @card: qeth_card structure pointer, for debug messages.
1999 *
2000 * Returns negative errno-compatible error indication or 0 on success.
2001 */
2002static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2003{
2004 int rc;
2005
2006 if (pnso_rc == 0)
2007 switch (response) {
2008 case 0x0001:
2009 rc = 0;
2010 break;
2011 case 0x0004:
2012 case 0x0100:
2013 case 0x0106:
ffb95251 2014 rc = -EOPNOTSUPP;
9f48b9db
EC		 2015 dev_err(&card->gdev->dev,
2016 "Setting address notification failed\n");
2017 break;
2018 case 0x0107:
2019 rc = -EAGAIN;
2020 break;
2021 default:
2022 rc = -EIO;
2023 }
2024 else
2025 rc = -EIO;
2026
2027 if (rc) {
2028 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2029 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2030 }
2031 return rc;
2032}
2033
2034static void qeth_bridgeport_an_set_cb(void *priv,
2035 enum qdio_brinfo_entry_type type, void *entry)
2036{
2037 struct qeth_card *card = (struct qeth_card *)priv;
2038 struct qdio_brinfo_entry_l2 *l2entry;
2039 u8 code;
2040
2041 if (type != l2_addr_lnid) {
2042 WARN_ON_ONCE(1);
2043 return;
2044 }
2045
2046 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2047 code = IPA_ADDR_CHANGE_CODE_MACADDR;
2048 if (l2entry->addr_lnid.lnid)
2049 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2050 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2051 (struct net_if_token *)&l2entry->nit,
2052 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2053}
2054
2055/**
2056 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2057 * @card: qeth_card structure pointer.
2058 * @enable: 0 - disable, non-zero - enable notifications
2059 *
2060 * Returns negative errno-compatible error indication or 0 on success.
2061 *
2062 * On enable, emits a series of address notifications udev events for all
2063 * currently registered hosts.
2064 */
2065int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2066{
2067 int rc;
2068 u16 response;
2069 struct ccw_device *ddev;
2070 struct subchannel_id schid;
2071
2072 if (!card)
2073 return -EINVAL;
2074 if (!card->options.sbp.supported_funcs)
2075 return -EOPNOTSUPP;
2076 ddev = CARD_DDEV(card);
2077 ccw_device_get_schid(ddev, &schid);
2078
2079 if (enable) {
2080 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2081 rc = qdio_pnso_brinfo(schid, 1, &response,
2082 qeth_bridgeport_an_set_cb, card);
2083 } else
2084 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2085 return qeth_anset_makerc(card, rc, response);
2086}
2087EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2088
4a71df50
FB		 2089module_init(qeth_l2_init);
2090module_exit(qeth_l2_exit);
2091MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2092MODULE_DESCRIPTION("qeth layer 2 discipline");
2093MODULE_LICENSE("GPL");
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