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s390/qeth: don't convert return code twice
[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
FB		 18#include <linux/etherdevice.h>
19#include <linux/mii.h>
20#include <linux/ip.h>
ccffad25 21#include <linux/list.h>
fe5c8028
LD		 22#include <linux/hash.h>
23#include <linux/hashtable.h>
24#include <linux/string.h>
4a71df50 25#include "qeth_core.h"
b4d72c08 26#include "qeth_l2.h"
4a71df50 27
4a71df50
FB		 28static int qeth_l2_set_offline(struct ccwgroup_device *);
29static int qeth_l2_stop(struct net_device *);
30static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
31static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
efbbc1d5 32 enum qeth_ipa_cmds);
fe5c8028 33static void qeth_l2_set_rx_mode(struct net_device *);
4a71df50 34static int qeth_l2_recover(void *);
c044dc21
EC		 35static void qeth_bridgeport_query_support(struct qeth_card *card);
36static void qeth_bridge_state_change(struct qeth_card *card,
37 struct qeth_ipa_cmd *cmd);
38static void qeth_bridge_host_event(struct qeth_card *card,
39 struct qeth_ipa_cmd *cmd);
4a71df50
FB		 40
41static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
42{
509e2562 43 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 44 struct mii_ioctl_data *mii_data;
45 int rc = 0;
46
47 if (!card)
48 return -ENODEV;
49
c3521254 50 if (!qeth_card_hw_is_reachable(card))
4a71df50
FB		 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:
5113fec0
UB		 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) &&
4a71df50
FB		 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;
c3ab96f3
FB		 80 case SIOC_QETH_QUERY_OAT:
81 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
82 break;
4a71df50
FB		 83 default:
84 rc = -EOPNOTSUPP;
85 }
86 if (rc)
847a50fd 87 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
4a71df50
FB		 88 return rc;
89}
90
91static 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
109static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
110{
111 struct qeth_card *card;
112 struct net_device *ndev;
f06f6f32 113 __u16 temp_dev_no;
4a71df50 114 unsigned long flags;
f06f6f32 115 struct ccw_dev_id read_devid;
4a71df50
FB		 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) {
f06f6f32
CH		 121 ccw_device_get_id(CARD_RDEV(card), &read_devid);
122 if (read_devid.devno == temp_dev_no) {
4a71df50
FB		 123 ndev = card->dev;
124 break;
125 }
126 }
127 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
128 return ndev;
129}
130
efbbc1d5 131static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
4a71df50 132{
efbbc1d5 133 int rc;
4a71df50 134
efbbc1d5 135 if (retcode)
1aec42bc 136 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
efbbc1d5
EC		 137 switch (retcode) {
138 case IPA_RC_SUCCESS:
139 rc = 0;
140 break;
141 case IPA_RC_L2_UNSUPPORTED_CMD:
ffb95251 142 rc = -EOPNOTSUPP;
efbbc1d5
EC		 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;
1aec42bc
TR		 158 case -ENOMEM:
159 rc = -ENOMEM;
160 break;
efbbc1d5
EC		 161 default:
162 rc = -EIO;
163 break;
4a71df50 164 }
efbbc1d5 165 return rc;
4a71df50
FB		 166}
167
168static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
169{
efbbc1d5 170 int rc;
4a71df50 171
efbbc1d5
EC		 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;
4a71df50
FB		 182}
183
184static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
185{
efbbc1d5
EC		 186 int rc;
187
847a50fd 188 QETH_CARD_TEXT(card, 2, "L2Dgmac");
efbbc1d5
EC		 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;
4a71df50
FB		 196}
197
fe5c8028 198static inline u32 qeth_l2_mac_hash(const u8 *addr)
4a71df50 199{
fe5c8028
LD		 200 return get_unaligned((u32 *)(&addr[2]));
201}
4a71df50 202
fe5c8028
LD		 203static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
204{
4a71df50 205
fe5c8028 206 int rc;
7db2266a 207
fe5c8028 208 if (mac->is_uc) {
efbbc1d5 209 rc = qeth_setdel_makerc(card,
fe5c8028
LD		 210 qeth_l2_send_setdelmac(card, mac->mac_addr,
211 IPA_CMD_SETVMAC));
7db2266a 212 } else {
4b764d1d 213 rc = qeth_l2_send_setgroupmac(card, mac->mac_addr);
7db2266a 214 }
fe5c8028 215 return rc;
4a71df50
FB		 216}
217
c07cbf2e 218static void qeth_l2_del_all_macs(struct qeth_card *card)
4a71df50 219{
fe5c8028
LD		 220 struct qeth_mac *mac;
221 struct hlist_node *tmp;
222 int i;
4a71df50
FB		 223
224 spin_lock_bh(&card->mclock);
fe5c8028 225 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
fe5c8028
LD		 226 hash_del(&mac->hnode);
227 kfree(mac);
4a71df50
FB		 228 }
229 spin_unlock_bh(&card->mclock);
230}
231
ce73e10e
KDW		 232static inline int qeth_l2_get_cast_type(struct qeth_card *card,
233 struct sk_buff *skb)
4a71df50 234{
ce73e10e
KDW		 235 if (card->info.type == QETH_CARD_TYPE_OSN)
236 return RTN_UNSPEC;
237 if (is_broadcast_ether_addr(skb->data))
238 return RTN_BROADCAST;
239 if (is_multicast_ether_addr(skb->data))
240 return RTN_MULTICAST;
241 return RTN_UNSPEC;
4a71df50
FB		 242}
243
4d7def2a
TR		 244static inline void qeth_l2_hdr_csum(struct qeth_card *card,
245 struct qeth_hdr *hdr, struct sk_buff *skb)
246{
247 struct iphdr *iph = ip_hdr(skb);
248
249 /* tcph->check contains already the pseudo hdr checksum
250 * so just set the header flags
251 */
252 if (iph->protocol == IPPROTO_UDP)
253 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
254 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
255 QETH_HDR_EXT_CSUM_HDR_REQ;
256 iph->check = 0;
257 if (card->options.performance_stats)
258 card->perf_stats.tx_csum++;
259}
260
4a71df50 261static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
43934077 262 struct sk_buff *skb, int cast_type)
4a71df50 263{
683d718a 264 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
4a71df50
FB		 265
266 memset(hdr, 0, sizeof(struct qeth_hdr));
267 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
268
269 /* set byte byte 3 to casting flags */
270 if (cast_type == RTN_MULTICAST)
271 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
272 else if (cast_type == RTN_BROADCAST)
273 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
274 else
ce73e10e 275 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
4a71df50
FB		 276
277 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
278 /* VSWITCH relies on the VLAN
279 * information to be present in
280 * the QDIO header */
281 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
282 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
283 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
284 }
285}
286
287static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
288 struct qeth_reply *reply, unsigned long data)
289{
290 struct qeth_ipa_cmd *cmd;
291
847a50fd 292 QETH_CARD_TEXT(card, 2, "L2sdvcb");
4a71df50
FB		 293 cmd = (struct qeth_ipa_cmd *) data;
294 if (cmd->hdr.return_code) {
14cc21b6 295 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
4a71df50
FB		 296 "Continuing\n", cmd->data.setdelvlan.vlan_id,
297 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
847a50fd
CO		 298 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
299 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 300 }
301 return 0;
302}
303
304static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
305 enum qeth_ipa_cmds ipacmd)
306{
307 struct qeth_ipa_cmd *cmd;
308 struct qeth_cmd_buffer *iob;
309
847a50fd 310 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
4a71df50 311 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
1aec42bc
TR		 312 if (!iob)
313 return -ENOMEM;
4a71df50
FB		 314 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
315 cmd->data.setdelvlan.vlan_id = i;
316 return qeth_send_ipa_cmd(card, iob,
317 qeth_l2_send_setdelvlan_cb, NULL);
318}
319
70919e23 320static void qeth_l2_process_vlans(struct qeth_card *card)
4a71df50
FB		 321{
322 struct qeth_vlan_vid *id;
847a50fd 323 QETH_CARD_TEXT(card, 3, "L2prcvln");
4a71df50
FB		 324 spin_lock_bh(&card->vlanlock);
325 list_for_each_entry(id, &card->vid_list, list) {
70919e23 326 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
4a71df50
FB		 327 }
328 spin_unlock_bh(&card->vlanlock);
329}
330
80d5c368
PM		 331static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
332 __be16 proto, u16 vid)
4a71df50 333{
509e2562 334 struct qeth_card *card = dev->ml_priv;
4a71df50 335 struct qeth_vlan_vid *id;
1aec42bc 336 int rc;
4a71df50 337
847a50fd 338 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
10651db7 339 if (!vid)
8e586137 340 return 0;
5113fec0 341 if (card->info.type == QETH_CARD_TYPE_OSM) {
847a50fd 342 QETH_CARD_TEXT(card, 3, "aidOSM");
8e586137 343 return 0;
5113fec0 344 }
8e98ac48 345 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 346 QETH_CARD_TEXT(card, 3, "aidREC");
8e586137 347 return 0;
8e98ac48 348 }
4a71df50
FB		 349 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
350 if (id) {
351 id->vid = vid;
1aec42bc
TR		 352 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
353 if (rc) {
354 kfree(id);
355 return rc;
356 }
4a71df50
FB		 357 spin_lock_bh(&card->vlanlock);
358 list_add_tail(&id->list, &card->vid_list);
359 spin_unlock_bh(&card->vlanlock);
8e586137
JP		 360 } else {
361 return -ENOMEM;
4a71df50 362 }
8e586137 363 return 0;
4a71df50
FB		 364}
365
80d5c368
PM		 366static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
367 __be16 proto, u16 vid)
4a71df50
FB		 368{
369 struct qeth_vlan_vid *id, *tmpid = NULL;
509e2562 370 struct qeth_card *card = dev->ml_priv;
1aec42bc 371 int rc = 0;
4a71df50 372
847a50fd 373 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
5113fec0 374 if (card->info.type == QETH_CARD_TYPE_OSM) {
847a50fd 375 QETH_CARD_TEXT(card, 3, "kidOSM");
8e586137 376 return 0;
5113fec0 377 }
8e98ac48 378 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 379 QETH_CARD_TEXT(card, 3, "kidREC");
8e586137 380 return 0;
8e98ac48 381 }
4a71df50
FB		 382 spin_lock_bh(&card->vlanlock);
383 list_for_each_entry(id, &card->vid_list, list) {
384 if (id->vid == vid) {
385 list_del(&id->list);
386 tmpid = id;
387 break;
388 }
389 }
390 spin_unlock_bh(&card->vlanlock);
391 if (tmpid) {
1aec42bc 392 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
4a71df50
FB		 393 kfree(tmpid);
394 }
fe5c8028 395 qeth_l2_set_rx_mode(card->dev);
1aec42bc 396 return rc;
4a71df50
FB		 397}
398
b2f4de8b 399static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
4a71df50 400{
d11ba0c4
PT		 401 QETH_DBF_TEXT(SETUP , 2, "stopcard");
402 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 403
404 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 405 if (card->read.state == CH_STATE_UP &&
406 card->write.state == CH_STATE_UP &&
407 (card->state == CARD_STATE_UP)) {
408 if (recovery_mode &&
409 card->info.type != QETH_CARD_TYPE_OSN) {
410 qeth_l2_stop(card->dev);
411 } else {
412 rtnl_lock();
413 dev_close(card->dev);
414 rtnl_unlock();
415 }
70919e23 416 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
4a71df50
FB		 417 card->state = CARD_STATE_SOFTSETUP;
418 }
419 if (card->state == CARD_STATE_SOFTSETUP) {
c07cbf2e 420 qeth_l2_del_all_macs(card);
4a71df50
FB		 421 qeth_clear_ipacmd_list(card);
422 card->state = CARD_STATE_HARDSETUP;
423 }
424 if (card->state == CARD_STATE_HARDSETUP) {
425 qeth_qdio_clear_card(card, 0);
426 qeth_clear_qdio_buffers(card);
427 qeth_clear_working_pool_list(card);
428 card->state = CARD_STATE_DOWN;
429 }
430 if (card->state == CARD_STATE_DOWN) {
431 qeth_clear_cmd_buffers(&card->read);
432 qeth_clear_cmd_buffers(&card->write);
433 }
4a71df50
FB		 434}
435
a1c3ed4c
FB		 436static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
437 int budget, int *done)
4a71df50 438{
a1c3ed4c 439 int work_done = 0;
4a71df50
FB		 440 struct sk_buff *skb;
441 struct qeth_hdr *hdr;
4a71df50
FB		 442 unsigned int len;
443
a1c3ed4c 444 *done = 0;
18af5c17 445 WARN_ON_ONCE(!budget);
a1c3ed4c
FB		 446 while (budget) {
447 skb = qeth_core_get_next_skb(card,
b3332930 448 &card->qdio.in_q->bufs[card->rx.b_index],
a1c3ed4c
FB		 449 &card->rx.b_element, &card->rx.e_offset, &hdr);
450 if (!skb) {
451 *done = 1;
452 break;
4a71df50 453 }
a1c3ed4c 454 skb->dev = card->dev;
4a71df50
FB		 455 switch (hdr->hdr.l2.id) {
456 case QETH_HEADER_TYPE_LAYER2:
457 skb->pkt_type = PACKET_HOST;
458 skb->protocol = eth_type_trans(skb, skb->dev);
4d7def2a
TR		 459 if ((card->dev->features & NETIF_F_RXCSUM)
460 && ((hdr->hdr.l2.flags[1] &
461 (QETH_HDR_EXT_CSUM_HDR_REQ |
462 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
463 (QETH_HDR_EXT_CSUM_HDR_REQ |
464 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
465 skb->ip_summed = CHECKSUM_UNNECESSARY;
466 else
467 skb->ip_summed = CHECKSUM_NONE;
12883725
UB		 468 if (skb->protocol == htons(ETH_P_802_2))
469 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
4a71df50 470 len = skb->len;
9abfa8cb 471 napi_gro_receive(&card->napi, skb);
4a71df50
FB		 472 break;
473 case QETH_HEADER_TYPE_OSN:
2d488c2f
UB		 474 if (card->info.type == QETH_CARD_TYPE_OSN) {
475 skb_push(skb, sizeof(struct qeth_hdr));
476 skb_copy_to_linear_data(skb, hdr,
4a71df50 477 sizeof(struct qeth_hdr));
2d488c2f
UB		 478 len = skb->len;
479 card->osn_info.data_cb(skb);
480 break;
481 }
482 /* else unknown */
4a71df50
FB		 483 default:
484 dev_kfree_skb_any(skb);
847a50fd 485 QETH_CARD_TEXT(card, 3, "inbunkno");
d11ba0c4 486 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 487 continue;
488 }
a1c3ed4c
FB		 489 work_done++;
490 budget--;
4a71df50
FB		 491 card->stats.rx_packets++;
492 card->stats.rx_bytes += len;
493 }
a1c3ed4c
FB		 494 return work_done;
495}
496
497static int qeth_l2_poll(struct napi_struct *napi, int budget)
498{
499 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
500 int work_done = 0;
501 struct qeth_qdio_buffer *buffer;
502 int done;
503 int new_budget = budget;
504
505 if (card->options.performance_stats) {
506 card->perf_stats.inbound_cnt++;
507 card->perf_stats.inbound_start_time = qeth_get_micros();
508 }
509
510 while (1) {
511 if (!card->rx.b_count) {
512 card->rx.qdio_err = 0;
513 card->rx.b_count = qdio_get_next_buffers(
514 card->data.ccwdev, 0, &card->rx.b_index,
515 &card->rx.qdio_err);
516 if (card->rx.b_count <= 0) {
517 card->rx.b_count = 0;
518 break;
519 }
520 card->rx.b_element =
521 &card->qdio.in_q->bufs[card->rx.b_index]
522 .buffer->element[0];
523 card->rx.e_offset = 0;
524 }
525
526 while (card->rx.b_count) {
527 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
528 if (!(card->rx.qdio_err &&
529 qeth_check_qdio_errors(card, buffer->buffer,
530 card->rx.qdio_err, "qinerr")))
531 work_done += qeth_l2_process_inbound_buffer(
532 card, new_budget, &done);
533 else
534 done = 1;
535
536 if (done) {
537 if (card->options.performance_stats)
538 card->perf_stats.bufs_rec++;
539 qeth_put_buffer_pool_entry(card,
540 buffer->pool_entry);
541 qeth_queue_input_buffer(card, card->rx.b_index);
542 card->rx.b_count--;
543 if (card->rx.b_count) {
544 card->rx.b_index =
545 (card->rx.b_index + 1) %
546 QDIO_MAX_BUFFERS_PER_Q;
547 card->rx.b_element =
548 &card->qdio.in_q
549 ->bufs[card->rx.b_index]
550 .buffer->element[0];
551 card->rx.e_offset = 0;
552 }
553 }
554
555 if (work_done >= budget)
556 goto out;
557 else
558 new_budget = budget - work_done;
559 }
560 }
561
562 napi_complete(napi);
563 if (qdio_start_irq(card->data.ccwdev, 0))
564 napi_schedule(&card->napi);
565out:
566 if (card->options.performance_stats)
567 card->perf_stats.inbound_time += qeth_get_micros() -
568 card->perf_stats.inbound_start_time;
569 return work_done;
4a71df50
FB		 570}
571
572static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
efbbc1d5 573 enum qeth_ipa_cmds ipacmd)
4a71df50
FB		 574{
575 struct qeth_ipa_cmd *cmd;
576 struct qeth_cmd_buffer *iob;
577
847a50fd 578 QETH_CARD_TEXT(card, 2, "L2sdmac");
4a71df50 579 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
1aec42bc
TR		 580 if (!iob)
581 return -ENOMEM;
4a71df50
FB		 582 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
583 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
584 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
efbbc1d5 585 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
4a71df50
FB		 586}
587
efbbc1d5 588static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
4a71df50 589{
efbbc1d5 590 int rc;
4a71df50 591
efbbc1d5
EC		 592 QETH_CARD_TEXT(card, 2, "L2Setmac");
593 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
594 IPA_CMD_SETVMAC));
595 if (rc == 0) {
596 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
597 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
598 dev_info(&card->gdev->dev,
599 "MAC address %pM successfully registered on device %s\n",
600 card->dev->dev_addr, card->dev->name);
601 } else {
4a71df50 602 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
efbbc1d5
EC		 603 switch (rc) {
604 case -EEXIST:
0666eb06 605 dev_warn(&card->gdev->dev,
efbbc1d5 606 "MAC address %pM already exists\n", mac);
0666eb06 607 break;
efbbc1d5 608 case -EPERM:
0666eb06 609 dev_warn(&card->gdev->dev,
efbbc1d5 610 "MAC address %pM is not authorized\n", mac);
0666eb06
UB		 611 break;
612 }
4a71df50 613 }
efbbc1d5 614 return rc;
4a71df50
FB		 615}
616
617static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
618{
efbbc1d5
EC		 619 int rc;
620
847a50fd 621 QETH_CARD_TEXT(card, 2, "L2Delmac");
4a71df50
FB		 622 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
623 return 0;
efbbc1d5
EC		 624 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
625 IPA_CMD_DELVMAC));
626 if (rc == 0)
627 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
628 return rc;
4a71df50
FB		 629}
630
631static int qeth_l2_request_initial_mac(struct qeth_card *card)
632{
633 int rc = 0;
634 char vendor_pre[] = {0x02, 0x00, 0x00};
635
d11ba0c4
PT		 636 QETH_DBF_TEXT(SETUP, 2, "doL2init");
637 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
4a71df50 638
a134884a
SR		 639 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
640 rc = qeth_query_setadapterparms(card);
641 if (rc) {
642 QETH_DBF_MESSAGE(2, "could not query adapter "
643 "parameters on device %s: x%x\n",
644 CARD_BUS_ID(card), rc);
645 }
4a71df50
FB		 646 }
647
5113fec0
UB		 648 if (card->info.type == QETH_CARD_TYPE_IQD ||
649 card->info.type == QETH_CARD_TYPE_OSM ||
650 card->info.type == QETH_CARD_TYPE_OSX ||
651 card->info.guestlan) {
4a71df50
FB		 652 rc = qeth_setadpparms_change_macaddr(card);
653 if (rc) {
14cc21b6
FB		 654 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
655 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1aec42bc 656 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
4a71df50
FB		 657 return rc;
658 }
d11ba0c4 659 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
4a71df50 660 } else {
1833611d 661 eth_random_addr(card->dev->dev_addr);
4a71df50
FB		 662 memcpy(card->dev->dev_addr, vendor_pre, 3);
663 }
664 return 0;
665}
666
667static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
668{
669 struct sockaddr *addr = p;
509e2562 670 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 671 int rc = 0;
672
847a50fd 673 QETH_CARD_TEXT(card, 3, "setmac");
4a71df50
FB		 674
675 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
847a50fd 676 QETH_CARD_TEXT(card, 3, "setmcINV");
4a71df50
FB		 677 return -EOPNOTSUPP;
678 }
679
5113fec0
UB		 680 if (card->info.type == QETH_CARD_TYPE_OSN ||
681 card->info.type == QETH_CARD_TYPE_OSM ||
682 card->info.type == QETH_CARD_TYPE_OSX) {
847a50fd 683 QETH_CARD_TEXT(card, 3, "setmcTYP");
4a71df50
FB		 684 return -EOPNOTSUPP;
685 }
847a50fd 686 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
8e98ac48 687 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 688 QETH_CARD_TEXT(card, 3, "setmcREC");
8e98ac48
UB		 689 return -ERESTARTSYS;
690 }
4a71df50 691 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
efbbc1d5 692 if (!rc || (rc == -ENOENT))
4a71df50 693 rc = qeth_l2_send_setmac(card, addr->sa_data);
e0a8114c 694 return rc ? -EINVAL : 0;
4a71df50
FB		 695}
696
0db587b0
EC		 697static void qeth_promisc_to_bridge(struct qeth_card *card)
698{
699 struct net_device *dev = card->dev;
700 enum qeth_ipa_promisc_modes promisc_mode;
701 int role;
702 int rc;
703
704 QETH_CARD_TEXT(card, 3, "pmisc2br");
705
706 if (!card->options.sbp.reflect_promisc)
707 return;
708 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
709 : SET_PROMISC_MODE_OFF;
710 if (promisc_mode == card->info.promisc_mode)
711 return;
712
713 if (promisc_mode == SET_PROMISC_MODE_ON) {
714 if (card->options.sbp.reflect_promisc_primary)
715 role = QETH_SBP_ROLE_PRIMARY;
716 else
717 role = QETH_SBP_ROLE_SECONDARY;
718 } else
719 role = QETH_SBP_ROLE_NONE;
720
721 rc = qeth_bridgeport_setrole(card, role);
722 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
723 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
724 if (!rc) {
725 card->options.sbp.role = role;
726 card->info.promisc_mode = promisc_mode;
727 }
fe5c8028
LD		 728
729}
730/* New MAC address is added to the hash table and marked to be written on card
731 * only if there is not in the hash table storage already
732 *
733*/
734static void
735qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
736{
737 struct qeth_mac *mac;
738
739 hash_for_each_possible(card->mac_htable, mac, hnode,
740 qeth_l2_mac_hash(ha->addr)) {
741 if (is_uc == mac->is_uc &&
742 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
5f78e29c 743 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
fe5c8028
LD		 744 return;
745 }
746 }
747
748 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
749
750 if (!mac)
751 return;
752
753 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
754 mac->is_uc = is_uc;
5f78e29c 755 mac->disp_flag = QETH_DISP_ADDR_ADD;
fe5c8028
LD		 756
757 hash_add(card->mac_htable, &mac->hnode,
758 qeth_l2_mac_hash(mac->mac_addr));
759
0db587b0
EC		 760}
761
fe5c8028 762static void qeth_l2_set_rx_mode(struct net_device *dev)
4a71df50 763{
509e2562 764 struct qeth_card *card = dev->ml_priv;
ccffad25 765 struct netdev_hw_addr *ha;
fe5c8028
LD		 766 struct qeth_mac *mac;
767 struct hlist_node *tmp;
768 int i;
769 int rc;
4a71df50
FB		 770
771 if (card->info.type == QETH_CARD_TYPE_OSN)
fe5c8028 772 return;
4a71df50 773
847a50fd 774 QETH_CARD_TEXT(card, 3, "setmulti");
8e98ac48
UB		 775 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
776 (card->state != CARD_STATE_UP))
777 return;
fe5c8028 778
4a71df50 779 spin_lock_bh(&card->mclock);
fe5c8028 780
22bedad3 781 netdev_for_each_mc_addr(ha, dev)
fe5c8028 782 qeth_l2_add_mac(card, ha, 0);
7db2266a 783
32e7bfc4 784 netdev_for_each_uc_addr(ha, dev)
fe5c8028
LD		 785 qeth_l2_add_mac(card, ha, 1);
786
787 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
5f78e29c 788 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
fe5c8028
LD		 789 if (!mac->is_uc)
790 rc = qeth_l2_send_delgroupmac(card,
791 mac->mac_addr);
792 else {
793 rc = qeth_l2_send_setdelmac(card, mac->mac_addr,
794 IPA_CMD_DELVMAC);
795 }
796
797 hash_del(&mac->hnode);
798 kfree(mac);
799
5f78e29c 800 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
fe5c8028
LD		 801 rc = qeth_l2_write_mac(card, mac);
802 if (rc) {
803 hash_del(&mac->hnode);
804 kfree(mac);
805 } else
5f78e29c 806 mac->disp_flag = QETH_DISP_ADDR_DELETE;
fe5c8028 807 } else
5f78e29c 808 mac->disp_flag = QETH_DISP_ADDR_DELETE;
fe5c8028 809 }
7db2266a 810
4a71df50 811 spin_unlock_bh(&card->mclock);
fe5c8028 812
0db587b0
EC		 813 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
814 qeth_setadp_promisc_mode(card);
815 else
816 qeth_promisc_to_bridge(card);
4a71df50
FB		 817}
818
819static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
820{
821 int rc;
822 struct qeth_hdr *hdr = NULL;
823 int elements = 0;
509e2562 824 struct qeth_card *card = dev->ml_priv;
4a71df50 825 struct sk_buff *new_skb = skb;
ce73e10e 826 int cast_type = qeth_l2_get_cast_type(card, skb);
290b8348 827 struct qeth_qdio_out_q *queue;
4a71df50 828 int tx_bytes = skb->len;
683d718a
FB		 829 int data_offset = -1;
830 int elements_needed = 0;
831 int hd_len = 0;
d52aec97 832 int nr_frags;
4a71df50 833
290b8348
SR		 834 if (card->qdio.do_prio_queueing || (cast_type &&
835 card->info.is_multicast_different))
836 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
837 qeth_get_ip_version(skb), cast_type)];
838 else
839 queue = card->qdio.out_qs[card->qdio.default_out_queue];
840
4a71df50
FB		 841 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
842 card->stats.tx_carrier_errors++;
843 goto tx_drop;
844 }
845
846 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
847 (skb->protocol == htons(ETH_P_IPV6)))
848 goto tx_drop;
849
850 if (card->options.performance_stats) {
851 card->perf_stats.outbound_cnt++;
852 card->perf_stats.outbound_start_time = qeth_get_micros();
853 }
854 netif_stop_queue(dev);
855
d52aec97
EC		 856 /* fix hardware limitation: as long as we do not have sbal
857 * chaining we can not send long frag lists
858 */
859 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
860 !qeth_get_elements_no(card, new_skb, 0)) {
6059c905
EC		 861 int lin_rc = skb_linearize(new_skb);
862
863 if (card->options.performance_stats) {
864 if (lin_rc)
865 card->perf_stats.tx_linfail++;
866 else
867 card->perf_stats.tx_lin++;
868 }
869 if (lin_rc)
d52aec97 870 goto tx_drop;
d52aec97
EC		 871 }
872
4a71df50
FB		 873 if (card->info.type == QETH_CARD_TYPE_OSN)
874 hdr = (struct qeth_hdr *)skb->data;
875 else {
64ef8957 876 if (card->info.type == QETH_CARD_TYPE_IQD) {
683d718a
FB		 877 new_skb = skb;
878 data_offset = ETH_HLEN;
879 hd_len = ETH_HLEN;
880 hdr = kmem_cache_alloc(qeth_core_header_cache,
881 GFP_ATOMIC);
882 if (!hdr)
883 goto tx_drop;
884 elements_needed++;
885 skb_reset_mac_header(new_skb);
43934077 886 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
683d718a
FB		 887 hdr->hdr.l2.pkt_length = new_skb->len;
888 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
889 skb_mac_header(new_skb), ETH_HLEN);
890 } else {
891 /* create a clone with writeable headroom */
892 new_skb = skb_realloc_headroom(skb,
893 sizeof(struct qeth_hdr));
894 if (!new_skb)
895 goto tx_drop;
896 hdr = (struct qeth_hdr *)skb_push(new_skb,
f90b744e 897 sizeof(struct qeth_hdr));
683d718a 898 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
43934077 899 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
4d7def2a
TR		 900 if (new_skb->ip_summed == CHECKSUM_PARTIAL)
901 qeth_l2_hdr_csum(card, hdr, new_skb);
683d718a 902 }
4a71df50
FB		 903 }
904
065cc782 905 elements = qeth_get_elements_no(card, new_skb, elements_needed);
64ef8957
FB		 906 if (!elements) {
907 if (data_offset >= 0)
908 kmem_cache_free(qeth_core_header_cache, hdr);
909 goto tx_drop;
f61a0d05 910 }
4a71df50 911
51aa165c 912 if (card->info.type != QETH_CARD_TYPE_IQD) {
d4ae1f5e 913 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
51aa165c
FB		 914 sizeof(struct qeth_hdr_layer2)))
915 goto tx_drop;
4a71df50 916 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
64ef8957 917 elements);
51aa165c 918 } else
4a71df50 919 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
64ef8957 920 elements, data_offset, hd_len);
4a71df50
FB		 921 if (!rc) {
922 card->stats.tx_packets++;
923 card->stats.tx_bytes += tx_bytes;
d52aec97
EC		 924 if (card->options.performance_stats) {
925 nr_frags = skb_shinfo(new_skb)->nr_frags;
926 if (nr_frags) {
927 card->perf_stats.sg_skbs_sent++;
928 /* nr_frags + skb->data */
929 card->perf_stats.sg_frags_sent += nr_frags + 1;
930 }
931 }
4a71df50
FB		 932 if (new_skb != skb)
933 dev_kfree_skb_any(skb);
ec634fe3 934 rc = NETDEV_TX_OK;
4a71df50 935 } else {
683d718a
FB		 936 if (data_offset >= 0)
937 kmem_cache_free(qeth_core_header_cache, hdr);
938
4a71df50
FB		 939 if (rc == -EBUSY) {
940 if (new_skb != skb)
941 dev_kfree_skb_any(new_skb);
942 return NETDEV_TX_BUSY;
943 } else
944 goto tx_drop;
945 }
946
947 netif_wake_queue(dev);
948 if (card->options.performance_stats)
949 card->perf_stats.outbound_time += qeth_get_micros() -
950 card->perf_stats.outbound_start_time;
951 return rc;
952
953tx_drop:
954 card->stats.tx_dropped++;
955 card->stats.tx_errors++;
956 if ((new_skb != skb) && new_skb)
957 dev_kfree_skb_any(new_skb);
958 dev_kfree_skb_any(skb);
d0ec0f54 959 netif_wake_queue(dev);
4a71df50
FB		 960 return NETDEV_TX_OK;
961}
962
39423440 963static int __qeth_l2_open(struct net_device *dev)
4a71df50 964{
509e2562 965 struct qeth_card *card = dev->ml_priv;
a1c3ed4c 966 int rc = 0;
4a71df50 967
847a50fd 968 QETH_CARD_TEXT(card, 4, "qethopen");
39423440
UB		 969 if (card->state == CARD_STATE_UP)
970 return rc;
4a71df50
FB		 971 if (card->state != CARD_STATE_SOFTSETUP)
972 return -ENODEV;
973
974 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
975 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
847a50fd 976 QETH_CARD_TEXT(card, 4, "nomacadr");
4a71df50
FB		 977 return -EPERM;
978 }
979 card->data.state = CH_STATE_UP;
980 card->state = CARD_STATE_UP;
4a71df50
FB		 981 netif_start_queue(dev);
982
a1c3ed4c
FB		 983 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
984 napi_enable(&card->napi);
985 napi_schedule(&card->napi);
986 } else
987 rc = -EIO;
988 return rc;
4a71df50
FB		 989}
990
39423440
UB		 991static int qeth_l2_open(struct net_device *dev)
992{
993 struct qeth_card *card = dev->ml_priv;
994
995 QETH_CARD_TEXT(card, 5, "qethope_");
996 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
997 QETH_CARD_TEXT(card, 3, "openREC");
998 return -ERESTARTSYS;
999 }
1000 return __qeth_l2_open(dev);
1001}
1002
4a71df50
FB		 1003static int qeth_l2_stop(struct net_device *dev)
1004{
509e2562 1005 struct qeth_card *card = dev->ml_priv;
4a71df50 1006
847a50fd 1007 QETH_CARD_TEXT(card, 4, "qethstop");
4a71df50 1008 netif_tx_disable(dev);
a1c3ed4c 1009 if (card->state == CARD_STATE_UP) {
4a71df50 1010 card->state = CARD_STATE_SOFTSETUP;
a1c3ed4c
FB		 1011 napi_disable(&card->napi);
1012 }
4a71df50
FB		 1013 return 0;
1014}
1015
1016static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
1017{
1018 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1019
b4d72c08 1020 qeth_l2_create_device_attributes(&gdev->dev);
4a71df50 1021 INIT_LIST_HEAD(&card->vid_list);
fe5c8028 1022 hash_init(card->mac_htable);
4a71df50 1023 card->options.layer2 = 1;
1da74b1c 1024 card->info.hwtrap = 0;
4a71df50
FB		 1025 return 0;
1026}
1027
1028static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
1029{
1030 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1031
b4d72c08 1032 qeth_l2_remove_device_attributes(&cgdev->dev);
f2148565 1033 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 1034 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1035
70919e23 1036 if (cgdev->state == CCWGROUP_ONLINE)
4a71df50 1037 qeth_l2_set_offline(cgdev);
4a71df50
FB		 1038
1039 if (card->dev) {
7831b4ff 1040 netif_napi_del(&card->napi);
4a71df50
FB		 1041 unregister_netdev(card->dev);
1042 card->dev = NULL;
1043 }
4a71df50
FB		 1044 return;
1045}
1046
0fc0b732 1047static const struct ethtool_ops qeth_l2_ethtool_ops = {
4a71df50 1048 .get_link = ethtool_op_get_link,
4a71df50
FB		 1049 .get_strings = qeth_core_get_strings,
1050 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 1051 .get_sset_count = qeth_core_get_sset_count,
4a71df50 1052 .get_drvinfo = qeth_core_get_drvinfo,
3f9975aa 1053 .get_settings = qeth_core_ethtool_get_settings,
4a71df50
FB		 1054};
1055
0fc0b732 1056static const struct ethtool_ops qeth_l2_osn_ops = {
4a71df50
FB		 1057 .get_strings = qeth_core_get_strings,
1058 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 1059 .get_sset_count = qeth_core_get_sset_count,
4a71df50
FB		 1060 .get_drvinfo = qeth_core_get_drvinfo,
1061};
1062
3d58cefd 1063static const struct net_device_ops qeth_l2_netdev_ops = {
8403b13c
FB		 1064 .ndo_open = qeth_l2_open,
1065 .ndo_stop = qeth_l2_stop,
1066 .ndo_get_stats = qeth_get_stats,
1067 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1068 .ndo_validate_addr = eth_validate_addr,
fe5c8028 1069 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
8403b13c
FB		 1070 .ndo_do_ioctl = qeth_l2_do_ioctl,
1071 .ndo_set_mac_address = qeth_l2_set_mac_address,
1072 .ndo_change_mtu = qeth_change_mtu,
1073 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1074 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1075 .ndo_tx_timeout = qeth_tx_timeout,
8f43fb00
TR		 1076 .ndo_fix_features = qeth_fix_features,
1077 .ndo_set_features = qeth_set_features
8403b13c
FB		 1078};
1079
4a71df50
FB		 1080static int qeth_l2_setup_netdev(struct qeth_card *card)
1081{
1082 switch (card->info.type) {
4a71df50 1083 case QETH_CARD_TYPE_IQD:
c835a677
TG		 1084 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1085 ether_setup);
4a71df50
FB		 1086 break;
1087 case QETH_CARD_TYPE_OSN:
c835a677
TG		 1088 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1089 ether_setup);
4a71df50
FB		 1090 card->dev->flags |= IFF_NOARP;
1091 break;
1092 default:
1093 card->dev = alloc_etherdev(0);
1094 }
1095
1096 if (!card->dev)
1097 return -ENODEV;
1098
509e2562 1099 card->dev->ml_priv = card;
4a71df50 1100 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
4a71df50 1101 card->dev->mtu = card->info.initial_mtu;
46b3ef4c
JW		 1102 card->dev->min_mtu = 64;
1103 card->dev->max_mtu = ETH_MAX_MTU;
8403b13c 1104 card->dev->netdev_ops = &qeth_l2_netdev_ops;
7ad24ea4
WK		 1105 card->dev->ethtool_ops =
1106 (card->info.type != QETH_CARD_TYPE_OSN) ?
1107 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
f646968f 1108 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
4d7def2a 1109 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
8f43fb00 1110 card->dev->hw_features = NETIF_F_SG;
9bdc4411 1111 card->dev->vlan_features = NETIF_F_SG;
8f43fb00 1112 /* OSA 3S and earlier has no RX/TX support */
9bdc4411 1113 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
8f43fb00 1114 card->dev->hw_features |= NETIF_F_IP_CSUM;
9bdc4411
HW		 1115 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1116 }
1117 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
8f43fb00 1118 card->dev->hw_features |= NETIF_F_RXCSUM;
9bdc4411
HW		 1119 card->dev->vlan_features |= NETIF_F_RXCSUM;
1120 }
4d7def2a 1121 }
4a71df50
FB		 1122 card->info.broadcast_capable = 1;
1123 qeth_l2_request_initial_mac(card);
d52aec97
EC		 1124 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
1125 PAGE_SIZE;
4a71df50 1126 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
a1c3ed4c 1127 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
e5ebe632 1128 netif_carrier_off(card->dev);
4a71df50
FB		 1129 return register_netdev(card->dev);
1130}
1131
4d7def2a
TR		 1132static int qeth_l2_start_ipassists(struct qeth_card *card)
1133{
1134 /* configure isolation level */
1135 if (qeth_set_access_ctrl_online(card, 0))
1136 return -ENODEV;
4d7def2a
TR		 1137 return 0;
1138}
1139
4a71df50
FB		 1140static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1141{
1142 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1143 int rc = 0;
1144 enum qeth_card_states recover_flag;
1145
9dc48ccc 1146 mutex_lock(&card->discipline_mutex);
c4949f07 1147 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 1148 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1149 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50 1150
4a71df50 1151 recover_flag = card->state;
4a71df50
FB		 1152 rc = qeth_core_hardsetup_card(card);
1153 if (rc) {
1aec42bc 1154 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
aa909224 1155 rc = -ENODEV;
4a71df50
FB		 1156 goto out_remove;
1157 }
c044dc21
EC		 1158 qeth_bridgeport_query_support(card);
1159 if (card->options.sbp.supported_funcs)
1160 dev_info(&card->gdev->dev,
9c23f4da 1161 "The device represents a Bridge Capable Port\n");
395672e0 1162 qeth_trace_features(card);
4a71df50 1163
aa909224
UB		 1164 if (!card->dev && qeth_l2_setup_netdev(card)) {
1165 rc = -ENODEV;
4a71df50 1166 goto out_remove;
aa909224 1167 }
4a71df50
FB		 1168
1169 if (card->info.type != QETH_CARD_TYPE_OSN)
1170 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1171
1da74b1c
FB		 1172 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1173 if (card->info.hwtrap &&
1174 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1175 card->info.hwtrap = 0;
1176 } else
1177 card->info.hwtrap = 0;
1178
b4d72c08
EC		 1179 qeth_l2_setup_bridgeport_attrs(card);
1180
4a71df50 1181 card->state = CARD_STATE_HARDSETUP;
a1c3ed4c 1182 memset(&card->rx, 0, sizeof(struct qeth_rx));
4a71df50
FB		 1183 qeth_print_status_message(card);
1184
1185 /* softsetup */
d11ba0c4 1186 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50
FB		 1187
1188 rc = qeth_send_startlan(card);
1189 if (rc) {
d11ba0c4 1190 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4a71df50 1191 if (rc == 0xe080) {
74eacdb9
FB		 1192 dev_warn(&card->gdev->dev,
1193 "The LAN is offline\n");
4a71df50 1194 card->lan_online = 0;
2b6203bb 1195 goto contin;
4a71df50 1196 }
aa909224 1197 rc = -ENODEV;
f2148565 1198 goto out_remove;
4a71df50
FB		 1199 } else
1200 card->lan_online = 1;
1201
2b6203bb 1202contin:
5113fec0 1203 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
0f54761d 1204 (card->info.type == QETH_CARD_TYPE_OSX)) {
8f43fb00
TR		 1205 rc = qeth_l2_start_ipassists(card);
1206 if (rc)
0f54761d 1207 goto out_remove;
0f54761d 1208 }
5113fec0
UB		 1209
1210 if (card->info.type != QETH_CARD_TYPE_OSN &&
1211 card->info.type != QETH_CARD_TYPE_OSM)
70919e23 1212 qeth_l2_process_vlans(card);
4a71df50
FB		 1213
1214 netif_tx_disable(card->dev);
1215
1216 rc = qeth_init_qdio_queues(card);
1217 if (rc) {
d11ba0c4 1218 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
aa909224 1219 rc = -ENODEV;
4a71df50
FB		 1220 goto out_remove;
1221 }
1222 card->state = CARD_STATE_SOFTSETUP;
2b6203bb
UB		 1223 if (card->lan_online)
1224 netif_carrier_on(card->dev);
1225 else
1226 netif_carrier_off(card->dev);
4a71df50
FB		 1227
1228 qeth_set_allowed_threads(card, 0xffffffff, 0);
1229 if (recover_flag == CARD_STATE_RECOVER) {
1230 if (recovery_mode &&
1231 card->info.type != QETH_CARD_TYPE_OSN) {
39423440 1232 __qeth_l2_open(card->dev);
4a71df50
FB		 1233 } else {
1234 rtnl_lock();
1235 dev_open(card->dev);
1236 rtnl_unlock();
1237 }
1238 /* this also sets saved unicast addresses */
fe5c8028 1239 qeth_l2_set_rx_mode(card->dev);
e830baa9
HW		 1240 rtnl_lock();
1241 qeth_recover_features(card->dev);
1242 rtnl_unlock();
4a71df50
FB		 1243 }
1244 /* let user_space know that device is online */
1245 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
c4949f07 1246 mutex_unlock(&card->conf_mutex);
9dc48ccc 1247 mutex_unlock(&card->discipline_mutex);
4a71df50 1248 return 0;
aa909224 1249
4a71df50 1250out_remove:
4a71df50
FB		 1251 qeth_l2_stop_card(card, 0);
1252 ccw_device_set_offline(CARD_DDEV(card));
1253 ccw_device_set_offline(CARD_WDEV(card));
1254 ccw_device_set_offline(CARD_RDEV(card));
22ae2790 1255 qdio_free(CARD_DDEV(card));
4a71df50
FB		 1256 if (recover_flag == CARD_STATE_RECOVER)
1257 card->state = CARD_STATE_RECOVER;
1258 else
1259 card->state = CARD_STATE_DOWN;
c4949f07 1260 mutex_unlock(&card->conf_mutex);
9dc48ccc 1261 mutex_unlock(&card->discipline_mutex);
aa909224 1262 return rc;
4a71df50
FB		 1263}
1264
1265static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1266{
1267 return __qeth_l2_set_online(gdev, 0);
1268}
1269
1270static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1271 int recovery_mode)
1272{
1273 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1274 int rc = 0, rc2 = 0, rc3 = 0;
1275 enum qeth_card_states recover_flag;
1276
9dc48ccc 1277 mutex_lock(&card->discipline_mutex);
c4949f07 1278 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 1279 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1280 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1281
1282 if (card->dev && netif_carrier_ok(card->dev))
1283 netif_carrier_off(card->dev);
1284 recover_flag = card->state;
1da74b1c
FB		 1285 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1286 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1287 card->info.hwtrap = 1;
1288 }
0f5623c9 1289 qeth_l2_stop_card(card, recovery_mode);
4a71df50
FB		 1290 rc = ccw_device_set_offline(CARD_DDEV(card));
1291 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1292 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1293 if (!rc)
1294 rc = (rc2) ? rc2 : rc3;
1295 if (rc)
d11ba0c4 1296 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
22ae2790 1297 qdio_free(CARD_DDEV(card));
4a71df50
FB		 1298 if (recover_flag == CARD_STATE_UP)
1299 card->state = CARD_STATE_RECOVER;
1300 /* let user_space know that device is offline */
1301 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
c4949f07 1302 mutex_unlock(&card->conf_mutex);
9dc48ccc 1303 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 1304 return 0;
1305}
1306
1307static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1308{
1309 return __qeth_l2_set_offline(cgdev, 0);
1310}
1311
1312static int qeth_l2_recover(void *ptr)
1313{
1314 struct qeth_card *card;
1315 int rc = 0;
1316
1317 card = (struct qeth_card *) ptr;
847a50fd 1318 QETH_CARD_TEXT(card, 2, "recover1");
4a71df50
FB		 1319 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1320 return 0;
847a50fd 1321 QETH_CARD_TEXT(card, 2, "recover2");
74eacdb9
FB		 1322 dev_warn(&card->gdev->dev,
1323 "A recovery process has been started for the device\n");
65d8013c 1324 qeth_set_recovery_task(card);
4a71df50
FB		 1325 __qeth_l2_set_offline(card->gdev, 1);
1326 rc = __qeth_l2_set_online(card->gdev, 1);
4a71df50 1327 if (!rc)
74eacdb9
FB		 1328 dev_info(&card->gdev->dev,
1329 "Device successfully recovered!\n");
28a7e4c9 1330 else {
0f54761d
SR		 1331 qeth_close_dev(card);
1332 dev_warn(&card->gdev->dev, "The qeth device driver "
2efaf5ff 1333 "failed to recover an error on the device\n");
28a7e4c9 1334 }
65d8013c 1335 qeth_clear_recovery_task(card);
a1c3ed4c
FB		 1336 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1337 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
4a71df50
FB		 1338 return 0;
1339}
1340
1341static int __init qeth_l2_init(void)
1342{
74eacdb9 1343 pr_info("register layer 2 discipline\n");
4a71df50
FB		 1344 return 0;
1345}
1346
1347static void __exit qeth_l2_exit(void)
1348{
74eacdb9 1349 pr_info("unregister layer 2 discipline\n");
4a71df50
FB		 1350}
1351
1352static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1353{
1354 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
f78ac2bb 1355 qeth_set_allowed_threads(card, 0, 1);
1da74b1c
FB		 1356 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1357 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
4a71df50
FB		 1358 qeth_qdio_clear_card(card, 0);
1359 qeth_clear_qdio_buffers(card);
22ae2790 1360 qdio_free(CARD_DDEV(card));
4a71df50
FB		 1361}
1362
bbcfcdc8
FB		 1363static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1364{
1365 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1366
1367 if (card->dev)
1368 netif_device_detach(card->dev);
1369 qeth_set_allowed_threads(card, 0, 1);
1370 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1371 if (gdev->state == CCWGROUP_OFFLINE)
1372 return 0;
1373 if (card->state == CARD_STATE_UP) {
1da74b1c
FB		 1374 if (card->info.hwtrap)
1375 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
bbcfcdc8
FB		 1376 __qeth_l2_set_offline(card->gdev, 1);
1377 } else
1378 __qeth_l2_set_offline(card->gdev, 0);
1379 return 0;
1380}
1381
1382static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1383{
1384 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1385 int rc = 0;
1386
1387 if (gdev->state == CCWGROUP_OFFLINE)
1388 goto out;
1389
1390 if (card->state == CARD_STATE_RECOVER) {
1391 rc = __qeth_l2_set_online(card->gdev, 1);
1392 if (rc) {
869da90b
UB		 1393 rtnl_lock();
1394 dev_close(card->dev);
1395 rtnl_unlock();
bbcfcdc8
FB		 1396 }
1397 } else
1398 rc = __qeth_l2_set_online(card->gdev, 0);
1399out:
1400 qeth_set_allowed_threads(card, 0xffffffff, 0);
1401 if (card->dev)
1402 netif_device_attach(card->dev);
1403 if (rc)
1404 dev_warn(&card->gdev->dev, "The qeth device driver "
1405 "failed to recover an error on the device\n");
1406 return rc;
1407}
1408
c044dc21
EC		 1409/* Returns zero if the command is successfully "consumed" */
1410static int qeth_l2_control_event(struct qeth_card *card,
1411 struct qeth_ipa_cmd *cmd)
1412{
1413 switch (cmd->hdr.command) {
9c23f4da
EC		 1414 case IPA_CMD_SETBRIDGEPORT_OSA:
1415 case IPA_CMD_SETBRIDGEPORT_IQD:
c044dc21
EC		 1416 if (cmd->data.sbp.hdr.command_code ==
1417 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1418 qeth_bridge_state_change(card, cmd);
1419 return 0;
1420 } else
1421 return 1;
1422 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1423 qeth_bridge_host_event(card, cmd);
1424 return 0;
1425 default:
1426 return 1;
1427 }
1428}
1429
c041f2d4
SO		 1430struct qeth_discipline qeth_l2_discipline = {
1431 .start_poll = qeth_qdio_start_poll,
1432 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1433 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1434 .recover = qeth_l2_recover,
1435 .setup = qeth_l2_probe_device,
4a71df50
FB		 1436 .remove = qeth_l2_remove_device,
1437 .set_online = qeth_l2_set_online,
1438 .set_offline = qeth_l2_set_offline,
1439 .shutdown = qeth_l2_shutdown,
bbcfcdc8
FB		 1440 .freeze = qeth_l2_pm_suspend,
1441 .thaw = qeth_l2_pm_resume,
1442 .restore = qeth_l2_pm_resume,
c044dc21 1443 .control_event_handler = qeth_l2_control_event,
4a71df50 1444};
c041f2d4 1445EXPORT_SYMBOL_GPL(qeth_l2_discipline);
4a71df50
FB		 1446
1447static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1448 struct qeth_cmd_buffer *iob)
1449{
1450 unsigned long flags;
1451 int rc = 0;
1452
847a50fd 1453 QETH_CARD_TEXT(card, 5, "osndctrd");
4a71df50
FB		 1454
1455 wait_event(card->wait_q,
1456 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1457 qeth_prepare_control_data(card, len, iob);
847a50fd 1458 QETH_CARD_TEXT(card, 6, "osnoirqp");
4a71df50
FB		 1459 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1460 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1461 (addr_t) iob, 0, 0);
1462 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1463 if (rc) {
14cc21b6 1464 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
4a71df50 1465 "ccw_device_start rc = %i\n", rc);
847a50fd 1466 QETH_CARD_TEXT_(card, 2, " err%d", rc);
4a71df50
FB		 1467 qeth_release_buffer(iob->channel, iob);
1468 atomic_set(&card->write.irq_pending, 0);
1469 wake_up(&card->wait_q);
1470 }
1471 return rc;
1472}
1473
1474static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1475 struct qeth_cmd_buffer *iob, int data_len)
1476{
1477 u16 s1, s2;
1478
847a50fd 1479 QETH_CARD_TEXT(card, 4, "osndipa");
4a71df50
FB		 1480
1481 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1482 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1483 s2 = (u16)data_len;
1484 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1485 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1486 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1487 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1488 return qeth_osn_send_control_data(card, s1, iob);
1489}
1490
1491int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1492{
1493 struct qeth_cmd_buffer *iob;
1494 struct qeth_card *card;
1495 int rc;
1496
4a71df50
FB		 1497 if (!dev)
1498 return -ENODEV;
509e2562 1499 card = dev->ml_priv;
4a71df50
FB		 1500 if (!card)
1501 return -ENODEV;
847a50fd 1502 QETH_CARD_TEXT(card, 2, "osnsdmc");
c3521254 1503 if (!qeth_card_hw_is_reachable(card))
4a71df50
FB		 1504 return -ENODEV;
1505 iob = qeth_wait_for_buffer(&card->write);
1506 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1507 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1508 return rc;
1509}
1510EXPORT_SYMBOL(qeth_osn_assist);
1511
1512int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1513 int (*assist_cb)(struct net_device *, void *),
1514 int (*data_cb)(struct sk_buff *))
1515{
1516 struct qeth_card *card;
1517
4a71df50
FB		 1518 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1519 if (*dev == NULL)
1520 return -ENODEV;
509e2562 1521 card = (*dev)->ml_priv;
4a71df50
FB		 1522 if (!card)
1523 return -ENODEV;
847a50fd 1524 QETH_CARD_TEXT(card, 2, "osnreg");
4a71df50
FB		 1525 if ((assist_cb == NULL) || (data_cb == NULL))
1526 return -EINVAL;
1527 card->osn_info.assist_cb = assist_cb;
1528 card->osn_info.data_cb = data_cb;
1529 return 0;
1530}
1531EXPORT_SYMBOL(qeth_osn_register);
1532
1533void qeth_osn_deregister(struct net_device *dev)
1534{
1535 struct qeth_card *card;
1536
4a71df50
FB		 1537 if (!dev)
1538 return;
509e2562 1539 card = dev->ml_priv;
4a71df50
FB		 1540 if (!card)
1541 return;
847a50fd 1542 QETH_CARD_TEXT(card, 2, "osndereg");
4a71df50
FB		 1543 card->osn_info.assist_cb = NULL;
1544 card->osn_info.data_cb = NULL;
1545 return;
1546}
1547EXPORT_SYMBOL(qeth_osn_deregister);
1548
b4d72c08
EC		 1549/* SETBRIDGEPORT support, async notifications */
1550
9f48b9db
EC		 1551enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1552
1553/**
1554 * qeth_bridge_emit_host_event() - bridgeport address change notification
1555 * @card: qeth_card structure pointer, for udev events.
1556 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1557 * and reset token and addr_lnid are unused and may be NULL.
1558 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1559 * object, 0 - addition of an object.
1560 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1561 * @token: "network token" structure identifying physical address of the port.
1562 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1563 *
1564 * This function is called when registrations and deregistrations are
1565 * reported by the hardware, and also when notifications are enabled -
1566 * for all currently registered addresses.
1567 */
1568static void qeth_bridge_emit_host_event(struct qeth_card *card,
1569 enum qeth_an_event_type evtype,
1570 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1571{
1572 char str[7][32];
1573 char *env[8];
1574 int i = 0;
1575
1576 switch (evtype) {
1577 case anev_reg_unreg:
1578 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1579 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1580 ? "deregister" : "register");
1581 env[i] = str[i]; i++;
1582 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1583 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1584 addr_lnid->lnid);
1585 env[i] = str[i]; i++;
1586 }
1587 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
9846e70b 1588 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
4d7def2a 1589 addr_lnid->mac);
9f48b9db
EC		 1590 env[i] = str[i]; i++;
1591 }
1592 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1593 token->cssid, token->ssid, token->devnum);
1594 env[i] = str[i]; i++;
1595 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1596 env[i] = str[i]; i++;
1597 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1598 token->chpid);
1599 env[i] = str[i]; i++;
1600 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1601 env[i] = str[i]; i++;
1602 break;
1603 case anev_abort:
1604 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1605 env[i] = str[i]; i++;
1606 break;
1607 case anev_reset:
1608 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1609 env[i] = str[i]; i++;
1610 break;
1611 }
1612 env[i] = NULL;
1613 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1614}
1615
b4d72c08
EC		 1616struct qeth_bridge_state_data {
1617 struct work_struct worker;
1618 struct qeth_card *card;
1619 struct qeth_sbp_state_change qports;
1620};
1621
1622static void qeth_bridge_state_change_worker(struct work_struct *work)
1623{
1624 struct qeth_bridge_state_data *data =
1625 container_of(work, struct qeth_bridge_state_data, worker);
1626 /* We are only interested in the first entry - local port */
1627 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1628 char env_locrem[32];
1629 char env_role[32];
1630 char env_state[32];
1631 char *env[] = {
1632 env_locrem,
1633 env_role,
1634 env_state,
1635 NULL
1636 };
1637
1638 /* Role should not change by itself, but if it did, */
1639 /* information from the hardware is authoritative. */
1640 mutex_lock(&data->card->conf_mutex);
1641 data->card->options.sbp.role = entry->role;
1642 mutex_unlock(&data->card->conf_mutex);
1643
1644 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1645 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1646 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1647 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1648 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1649 "<INVALID>");
1650 snprintf(env_state, sizeof(env_state), "STATE=%s",
1651 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1652 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1653 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1654 "<INVALID>");
1655 kobject_uevent_env(&data->card->gdev->dev.kobj,
1656 KOBJ_CHANGE, env);
1657 kfree(data);
1658}
1659
c044dc21
EC		 1660static void qeth_bridge_state_change(struct qeth_card *card,
1661 struct qeth_ipa_cmd *cmd)
b4d72c08
EC		 1662{
1663 struct qeth_sbp_state_change *qports =
1664 &cmd->data.sbp.data.state_change;
1665 struct qeth_bridge_state_data *data;
1666 int extrasize;
1667
1668 QETH_CARD_TEXT(card, 2, "brstchng");
1669 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
8a593148 1670 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
b4d72c08
EC		 1671 return;
1672 }
1673 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1674 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1675 GFP_ATOMIC);
1676 if (!data) {
1677 QETH_CARD_TEXT(card, 2, "BPSalloc");
1678 return;
1679 }
1680 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1681 data->card = card;
1682 memcpy(&data->qports, qports,
1683 sizeof(struct qeth_sbp_state_change) + extrasize);
1684 queue_work(qeth_wq, &data->worker);
1685}
b4d72c08 1686
9f48b9db
EC		 1687struct qeth_bridge_host_data {
1688 struct work_struct worker;
1689 struct qeth_card *card;
1690 struct qeth_ipacmd_addr_change hostevs;
1691};
1692
1693static void qeth_bridge_host_event_worker(struct work_struct *work)
1694{
1695 struct qeth_bridge_host_data *data =
1696 container_of(work, struct qeth_bridge_host_data, worker);
1697 int i;
1698
1699 if (data->hostevs.lost_event_mask) {
1700 dev_info(&data->card->gdev->dev,
9c23f4da 1701"Address notification from the Bridge Port stopped %s (%s)\n",
9f48b9db
EC		 1702 data->card->dev->name,
1703 (data->hostevs.lost_event_mask == 0x01)
1704 ? "Overflow"
1705 : (data->hostevs.lost_event_mask == 0x02)
1706 ? "Bridge port state change"
1707 : "Unknown reason");
1708 mutex_lock(&data->card->conf_mutex);
1709 data->card->options.sbp.hostnotification = 0;
1710 mutex_unlock(&data->card->conf_mutex);
1711 qeth_bridge_emit_host_event(data->card, anev_abort,
1712 0, NULL, NULL);
1713 } else
1714 for (i = 0; i < data->hostevs.num_entries; i++) {
1715 struct qeth_ipacmd_addr_change_entry *entry =
1716 &data->hostevs.entry[i];
1717 qeth_bridge_emit_host_event(data->card,
1718 anev_reg_unreg,
1719 entry->change_code,
1720 &entry->token, &entry->addr_lnid);
1721 }
1722 kfree(data);
1723}
1724
c044dc21
EC		 1725static void qeth_bridge_host_event(struct qeth_card *card,
1726 struct qeth_ipa_cmd *cmd)
9f48b9db
EC		 1727{
1728 struct qeth_ipacmd_addr_change *hostevs =
1729 &cmd->data.addrchange;
1730 struct qeth_bridge_host_data *data;
1731 int extrasize;
1732
1733 QETH_CARD_TEXT(card, 2, "brhostev");
1734 if (cmd->hdr.return_code != 0x0000) {
1735 if (cmd->hdr.return_code == 0x0010) {
1736 if (hostevs->lost_event_mask == 0x00)
1737 hostevs->lost_event_mask = 0xff;
1738 } else {
1739 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1740 cmd->hdr.return_code);
1741 return;
1742 }
1743 }
1744 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1745 hostevs->num_entries;
1746 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1747 GFP_ATOMIC);
1748 if (!data) {
1749 QETH_CARD_TEXT(card, 2, "BPHalloc");
1750 return;
1751 }
1752 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1753 data->card = card;
1754 memcpy(&data->hostevs, hostevs,
1755 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1756 queue_work(qeth_wq, &data->worker);
1757}
9f48b9db 1758
b4d72c08
EC		 1759/* SETBRIDGEPORT support; sending commands */
1760
1761struct _qeth_sbp_cbctl {
1762 u16 ipa_rc;
1763 u16 cmd_rc;
1764 union {
1765 u32 supported;
1766 struct {
1767 enum qeth_sbp_roles *role;
1768 enum qeth_sbp_states *state;
1769 } qports;
1770 } data;
1771};
1772
1773/**
1774 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1775 * @card: qeth_card structure pointer, for debug messages.
1776 * @cbctl: state structure with hardware return codes.
1777 * @setcmd: IPA command code
1778 *
1779 * Returns negative errno-compatible error indication or 0 on success.
1780 */
1781static int qeth_bridgeport_makerc(struct qeth_card *card,
1782 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1783{
1784 int rc;
9c23f4da 1785 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
b4d72c08 1786
9c23f4da
EC		 1787 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1788 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
b4d72c08
EC		 1789 switch (cbctl->cmd_rc) {
1790 case 0x0000:
1791 rc = 0;
1792 break;
9c23f4da 1793 case 0x2B04:
b4d72c08 1794 case 0x0004:
ffb95251 1795 rc = -EOPNOTSUPP;
b4d72c08 1796 break;
9c23f4da 1797 case 0x2B0C:
b4d72c08
EC		 1798 case 0x000C: /* Not configured as bridge Port */
1799 rc = -ENODEV; /* maybe not the best code here? */
1800 dev_err(&card->gdev->dev,
9c23f4da 1801 "The device is not configured as a Bridge Port\n");
b4d72c08 1802 break;
1b05cf62
EC		 1803 case 0x2B10:
1804 case 0x0010: /* OS mismatch */
1805 rc = -EPERM;
1806 dev_err(&card->gdev->dev,
1807 "A Bridge Port is already configured by a different operating system\n");
1808 break;
9c23f4da 1809 case 0x2B14:
b4d72c08
EC		 1810 case 0x0014: /* Another device is Primary */
1811 switch (setcmd) {
1812 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1813 rc = -EEXIST;
1814 dev_err(&card->gdev->dev,
9c23f4da 1815 "The LAN already has a primary Bridge Port\n");
b4d72c08
EC		 1816 break;
1817 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1818 rc = -EBUSY;
1819 dev_err(&card->gdev->dev,
9c23f4da 1820 "The device is already a primary Bridge Port\n");
b4d72c08
EC		 1821 break;
1822 default:
1823 rc = -EIO;
1824 }
1825 break;
9c23f4da 1826 case 0x2B18:
b4d72c08
EC		 1827 case 0x0018: /* This device is currently Secondary */
1828 rc = -EBUSY;
1829 dev_err(&card->gdev->dev,
9c23f4da 1830 "The device is already a secondary Bridge Port\n");
b4d72c08 1831 break;
9c23f4da 1832 case 0x2B1C:
b4d72c08
EC		 1833 case 0x001C: /* Limit for Secondary devices reached */
1834 rc = -EEXIST;
1835 dev_err(&card->gdev->dev,
9c23f4da 1836 "The LAN cannot have more secondary Bridge Ports\n");
b4d72c08 1837 break;
9c23f4da 1838 case 0x2B24:
b4d72c08
EC		 1839 case 0x0024: /* This device is currently Primary */
1840 rc = -EBUSY;
1841 dev_err(&card->gdev->dev,
9c23f4da 1842 "The device is already a primary Bridge Port\n");
b4d72c08 1843 break;
9c23f4da 1844 case 0x2B20:
b4d72c08
EC		 1845 case 0x0020: /* Not authorized by zManager */
1846 rc = -EACCES;
1847 dev_err(&card->gdev->dev,
9c23f4da 1848 "The device is not authorized to be a Bridge Port\n");
b4d72c08
EC		 1849 break;
1850 default:
1851 rc = -EIO;
1852 }
9c23f4da
EC		 1853 else
1854 switch (cbctl->ipa_rc) {
1855 case IPA_RC_NOTSUPP:
ffb95251 1856 rc = -EOPNOTSUPP;
9c23f4da
EC		 1857 break;
1858 case IPA_RC_UNSUPPORTED_COMMAND:
ffb95251 1859 rc = -EOPNOTSUPP;
9c23f4da
EC		 1860 break;
1861 default:
1862 rc = -EIO;
1863 }
1864
b4d72c08
EC		 1865 if (rc) {
1866 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1867 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1868 }
1869 return rc;
1870}
1871
9c23f4da
EC		 1872static inline int ipa_cmd_sbp(struct qeth_card *card)
1873{
1874 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1875 IPA_CMD_SETBRIDGEPORT_IQD :
1876 IPA_CMD_SETBRIDGEPORT_OSA;
1877}
1878
b4d72c08
EC		 1879static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1880 struct qeth_reply *reply, unsigned long data)
1881{
1882 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1883 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1884 QETH_CARD_TEXT(card, 2, "brqsupcb");
1885 cbctl->ipa_rc = cmd->hdr.return_code;
1886 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1887 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1888 cbctl->data.supported =
1889 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1890 } else {
1891 cbctl->data.supported = 0;
1892 }
1893 return 0;
1894}
1895
1896/**
1897 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1898 * @card: qeth_card structure pointer.
1899 *
1900 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1901 * strucutre: card->options.sbp.supported_funcs.
1902 */
c044dc21 1903static void qeth_bridgeport_query_support(struct qeth_card *card)
b4d72c08
EC		 1904{
1905 struct qeth_cmd_buffer *iob;
1906 struct qeth_ipa_cmd *cmd;
1907 struct _qeth_sbp_cbctl cbctl;
1908
1909 QETH_CARD_TEXT(card, 2, "brqsuppo");
9c23f4da 1910 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1aec42bc
TR		 1911 if (!iob)
1912 return;
b4d72c08
EC		 1913 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1914 cmd->data.sbp.hdr.cmdlength =
1915 sizeof(struct qeth_ipacmd_sbp_hdr) +
1916 sizeof(struct qeth_sbp_query_cmds_supp);
1917 cmd->data.sbp.hdr.command_code =
1918 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1919 cmd->data.sbp.hdr.used_total = 1;
1920 cmd->data.sbp.hdr.seq_no = 1;
1921 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1922 (void *)&cbctl) ||
1923 qeth_bridgeport_makerc(card, &cbctl,
1924 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1925 /* non-zero makerc signifies failure, and produce messages */
1926 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1927 return;
1928 }
1929 card->options.sbp.supported_funcs = cbctl.data.supported;
1930}
b4d72c08
EC		 1931
1932static int qeth_bridgeport_query_ports_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_query_ports *qports = &cmd->data.sbp.data.query_ports;
1937 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1938
1939 QETH_CARD_TEXT(card, 2, "brqprtcb");
1940 cbctl->ipa_rc = cmd->hdr.return_code;
1941 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1942 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1943 return 0;
1944 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1945 cbctl->cmd_rc = 0xffff;
1946 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1947 return 0;
1948 }
1949 /* first entry contains the state of the local port */
1950 if (qports->num_entries > 0) {
1951 if (cbctl->data.qports.role)
1952 *cbctl->data.qports.role = qports->entry[0].role;
1953 if (cbctl->data.qports.state)
1954 *cbctl->data.qports.state = qports->entry[0].state;
1955 }
1956 return 0;
1957}
1958
1959/**
1960 * qeth_bridgeport_query_ports() - query local bridgeport status.
1961 * @card: qeth_card structure pointer.
1962 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1963 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1964 *
1965 * Returns negative errno-compatible error indication or 0 on success.
1966 *
1967 * 'role' and 'state' are not updated in case of hardware operation failure.
1968 */
1969int qeth_bridgeport_query_ports(struct qeth_card *card,
1970 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1971{
1972 int rc = 0;
1973 struct qeth_cmd_buffer *iob;
1974 struct qeth_ipa_cmd *cmd;
1975 struct _qeth_sbp_cbctl cbctl = {
1976 .data = {
1977 .qports = {
1978 .role = role,
1979 .state = state,
1980 },
1981 },
1982 };
1983
1984 QETH_CARD_TEXT(card, 2, "brqports");
1985 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1986 return -EOPNOTSUPP;
9c23f4da 1987 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1aec42bc
TR		 1988 if (!iob)
1989 return -ENOMEM;
b4d72c08
EC		 1990 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1991 cmd->data.sbp.hdr.cmdlength =
1992 sizeof(struct qeth_ipacmd_sbp_hdr);
1993 cmd->data.sbp.hdr.command_code =
1994 IPA_SBP_QUERY_BRIDGE_PORTS;
1995 cmd->data.sbp.hdr.used_total = 1;
1996 cmd->data.sbp.hdr.seq_no = 1;
1997 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1998 (void *)&cbctl);
c88394e7 1999 if (rc < 0)
b4d72c08 2000 return rc;
c88394e7 2001 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
b4d72c08
EC		 2002}
2003EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
2004
2005static int qeth_bridgeport_set_cb(struct qeth_card *card,
2006 struct qeth_reply *reply, unsigned long data)
2007{
2008 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
2009 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
2010 QETH_CARD_TEXT(card, 2, "brsetrcb");
2011 cbctl->ipa_rc = cmd->hdr.return_code;
2012 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
2013 return 0;
2014}
2015
2016/**
2017 * qeth_bridgeport_setrole() - Assign primary role to the port.
2018 * @card: qeth_card structure pointer.
2019 * @role: Role to assign.
2020 *
2021 * Returns negative errno-compatible error indication or 0 on success.
2022 */
2023int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
2024{
2025 int rc = 0;
2026 int cmdlength;
2027 struct qeth_cmd_buffer *iob;
2028 struct qeth_ipa_cmd *cmd;
2029 struct _qeth_sbp_cbctl cbctl;
2030 enum qeth_ipa_sbp_cmd setcmd;
2031
2032 QETH_CARD_TEXT(card, 2, "brsetrol");
2033 switch (role) {
2034 case QETH_SBP_ROLE_NONE:
2035 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
2036 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2037 sizeof(struct qeth_sbp_reset_role);
2038 break;
2039 case QETH_SBP_ROLE_PRIMARY:
2040 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
2041 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2042 sizeof(struct qeth_sbp_set_primary);
2043 break;
2044 case QETH_SBP_ROLE_SECONDARY:
2045 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
2046 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2047 sizeof(struct qeth_sbp_set_secondary);
2048 break;
2049 default:
2050 return -EINVAL;
2051 }
2052 if (!(card->options.sbp.supported_funcs & setcmd))
2053 return -EOPNOTSUPP;
9c23f4da 2054 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1aec42bc
TR		 2055 if (!iob)
2056 return -ENOMEM;
b4d72c08
EC		 2057 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2058 cmd->data.sbp.hdr.cmdlength = cmdlength;
2059 cmd->data.sbp.hdr.command_code = setcmd;
2060 cmd->data.sbp.hdr.used_total = 1;
2061 cmd->data.sbp.hdr.seq_no = 1;
2062 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
2063 (void *)&cbctl);
c88394e7 2064 if (rc < 0)
b4d72c08 2065 return rc;
c88394e7 2066 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
b4d72c08
EC		 2067}
2068
9f48b9db
EC		 2069/**
2070 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
2071 * @card: qeth_card structure pointer, for debug messages.
2072 *
2073 * Returns negative errno-compatible error indication or 0 on success.
2074 */
2075static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2076{
2077 int rc;
2078
2079 if (pnso_rc == 0)
2080 switch (response) {
2081 case 0x0001:
2082 rc = 0;
2083 break;
2084 case 0x0004:
2085 case 0x0100:
2086 case 0x0106:
ffb95251 2087 rc = -EOPNOTSUPP;
9f48b9db
EC		 2088 dev_err(&card->gdev->dev,
2089 "Setting address notification failed\n");
2090 break;
2091 case 0x0107:
2092 rc = -EAGAIN;
2093 break;
2094 default:
2095 rc = -EIO;
2096 }
2097 else
2098 rc = -EIO;
2099
2100 if (rc) {
2101 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2102 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2103 }
2104 return rc;
2105}
2106
2107static void qeth_bridgeport_an_set_cb(void *priv,
2108 enum qdio_brinfo_entry_type type, void *entry)
2109{
2110 struct qeth_card *card = (struct qeth_card *)priv;
2111 struct qdio_brinfo_entry_l2 *l2entry;
2112 u8 code;
2113
2114 if (type != l2_addr_lnid) {
2115 WARN_ON_ONCE(1);
2116 return;
2117 }
2118
2119 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2120 code = IPA_ADDR_CHANGE_CODE_MACADDR;
2121 if (l2entry->addr_lnid.lnid)
2122 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2123 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2124 (struct net_if_token *)&l2entry->nit,
2125 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2126}
2127
2128/**
2129 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2130 * @card: qeth_card structure pointer.
2131 * @enable: 0 - disable, non-zero - enable notifications
2132 *
2133 * Returns negative errno-compatible error indication or 0 on success.
2134 *
2135 * On enable, emits a series of address notifications udev events for all
2136 * currently registered hosts.
2137 */
2138int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2139{
2140 int rc;
2141 u16 response;
2142 struct ccw_device *ddev;
2143 struct subchannel_id schid;
2144
2145 if (!card)
2146 return -EINVAL;
2147 if (!card->options.sbp.supported_funcs)
2148 return -EOPNOTSUPP;
2149 ddev = CARD_DDEV(card);
2150 ccw_device_get_schid(ddev, &schid);
2151
2152 if (enable) {
2153 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2154 rc = qdio_pnso_brinfo(schid, 1, &response,
2155 qeth_bridgeport_an_set_cb, card);
2156 } else
2157 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2158 return qeth_anset_makerc(card, rc, response);
2159}
2160EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2161
4a71df50
FB		 2162module_init(qeth_l2_init);
2163module_exit(qeth_l2_exit);
2164MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2165MODULE_DESCRIPTION("qeth layer 2 discipline");
2166MODULE_LICENSE("GPL");
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