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Merge tag 'amlogic-dt-2' of https://git.kernel.org/pub/scm/linux/kernel/git/khilman...
[linux-2.6-block.git] / drivers / s390 / net / qeth_l2_main.c
CommitLineData
ab9953ff 1// SPDX-License-Identifier: GPL-2.0
4a71df50 2/*
bbcfcdc8 3 * Copyright IBM Corp. 2007, 2009
4a71df50
FB		 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
74eacdb9
FB		 10#define KMSG_COMPONENT "qeth"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
4a71df50
FB		 13#include <linux/module.h>
14#include <linux/moduleparam.h>
15#include <linux/string.h>
16#include <linux/errno.h>
17#include <linux/kernel.h>
5a0e3ad6 18#include <linux/slab.h>
4a71df50 19#include <linux/etherdevice.h>
4a71df50 20#include <linux/ip.h>
ccffad25 21#include <linux/list.h>
fe5c8028
LD		 22#include <linux/hash.h>
23#include <linux/hashtable.h>
ec61bd2f 24#include <asm/setup.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 *);
fe5c8028 30static void qeth_l2_set_rx_mode(struct net_device *);
c044dc21
EC		 31static void qeth_bridgeport_query_support(struct qeth_card *card);
32static void qeth_bridge_state_change(struct qeth_card *card,
33 struct qeth_ipa_cmd *cmd);
34static void qeth_bridge_host_event(struct qeth_card *card,
35 struct qeth_ipa_cmd *cmd);
caa1f0b1 36static void qeth_l2_vnicc_set_defaults(struct qeth_card *card);
a45b3faf 37static void qeth_l2_vnicc_init(struct qeth_card *card);
349d13d5
HW		 38static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
39 u32 *timeout);
4a71df50 40
4a71df50
FB		 41static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
42{
43 struct qeth_card *card;
44 struct net_device *ndev;
f06f6f32 45 __u16 temp_dev_no;
4a71df50 46 unsigned long flags;
f06f6f32 47 struct ccw_dev_id read_devid;
4a71df50
FB		 48
49 ndev = NULL;
50 memcpy(&temp_dev_no, read_dev_no, 2);
51 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
52 list_for_each_entry(card, &qeth_core_card_list.list, list) {
f06f6f32
CH		 53 ccw_device_get_id(CARD_RDEV(card), &read_devid);
54 if (read_devid.devno == temp_dev_no) {
4a71df50
FB		 55 ndev = card->dev;
56 break;
57 }
58 }
59 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
60 return ndev;
61}
62
2aa48671 63static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode)
4a71df50 64{
efbbc1d5 65 int rc;
4a71df50 66
efbbc1d5 67 if (retcode)
1aec42bc 68 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
efbbc1d5
EC		 69 switch (retcode) {
70 case IPA_RC_SUCCESS:
71 rc = 0;
72 break;
73 case IPA_RC_L2_UNSUPPORTED_CMD:
ffb95251 74 rc = -EOPNOTSUPP;
efbbc1d5
EC		 75 break;
76 case IPA_RC_L2_ADDR_TABLE_FULL:
77 rc = -ENOSPC;
78 break;
79 case IPA_RC_L2_DUP_MAC:
80 case IPA_RC_L2_DUP_LAYER3_MAC:
81 rc = -EEXIST;
82 break;
83 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
84 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
85 rc = -EPERM;
86 break;
87 case IPA_RC_L2_MAC_NOT_FOUND:
88 rc = -ENOENT;
89 break;
1aec42bc
TR		 90 case -ENOMEM:
91 rc = -ENOMEM;
92 break;
efbbc1d5
EC		 93 default:
94 rc = -EIO;
95 break;
4a71df50 96 }
efbbc1d5 97 return rc;
4a71df50
FB		 98}
99
ac988d78
JW		 100static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
101 enum qeth_ipa_cmds ipacmd)
102{
103 struct qeth_ipa_cmd *cmd;
104 struct qeth_cmd_buffer *iob;
105
106 QETH_CARD_TEXT(card, 2, "L2sdmac");
107 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
108 if (!iob)
109 return -ENOMEM;
ff5caa7a 110 cmd = __ipa_cmd(iob);
99f0b85d
JW		 111 cmd->data.setdelmac.mac_length = ETH_ALEN;
112 ether_addr_copy(cmd->data.setdelmac.mac, mac);
2aa48671
JW		 113 return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob,
114 NULL, NULL));
ac988d78
JW		 115}
116
117static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
118{
119 int rc;
120
121 QETH_CARD_TEXT(card, 2, "L2Setmac");
122 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
123 if (rc == 0) {
ac988d78 124 dev_info(&card->gdev->dev,
bcacfcbc
JW		 125 "MAC address %pM successfully registered on device %s\n",
126 mac, card->dev->name);
ac988d78 127 } else {
ac988d78
JW		 128 switch (rc) {
129 case -EEXIST:
130 dev_warn(&card->gdev->dev,
131 "MAC address %pM already exists\n", mac);
132 break;
133 case -EPERM:
134 dev_warn(&card->gdev->dev,
135 "MAC address %pM is not authorized\n", mac);
136 break;
137 }
138 }
139 return rc;
140}
141
8174aa8a 142static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
4a71df50 143{
8174aa8a
JW		 144 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ?
145 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
efbbc1d5 146 int rc;
4a71df50 147
8174aa8a
JW		 148 QETH_CARD_TEXT(card, 2, "L2Wmac");
149 rc = qeth_l2_send_setdelmac(card, mac, cmd);
efbbc1d5 150 if (rc == -EEXIST)
8174aa8a
JW		 151 QETH_DBF_MESSAGE(2, "MAC %pM already registered on %s\n",
152 mac, QETH_CARD_IFNAME(card));
efbbc1d5 153 else if (rc)
8174aa8a
JW		 154 QETH_DBF_MESSAGE(2, "Failed to register MAC %pM on %s: %d\n",
155 mac, QETH_CARD_IFNAME(card), rc);
efbbc1d5 156 return rc;
4a71df50
FB		 157}
158
8174aa8a 159static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
4a71df50 160{
8174aa8a
JW		 161 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ?
162 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
efbbc1d5
EC		 163 int rc;
164
8174aa8a
JW		 165 QETH_CARD_TEXT(card, 2, "L2Rmac");
166 rc = qeth_l2_send_setdelmac(card, mac, cmd);
efbbc1d5 167 if (rc)
8174aa8a
JW		 168 QETH_DBF_MESSAGE(2, "Failed to delete MAC %pM on %s: %d\n",
169 mac, QETH_CARD_IFNAME(card), rc);
efbbc1d5 170 return rc;
4a71df50
FB		 171}
172
c07cbf2e 173static void qeth_l2_del_all_macs(struct qeth_card *card)
4a71df50 174{
fe5c8028
LD		 175 struct qeth_mac *mac;
176 struct hlist_node *tmp;
177 int i;
4a71df50
FB		 178
179 spin_lock_bh(&card->mclock);
fe5c8028 180 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
fe5c8028
LD		 181 hash_del(&mac->hnode);
182 kfree(mac);
4a71df50
FB		 183 }
184 spin_unlock_bh(&card->mclock);
185}
186
cef6ff22 187static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
4a71df50 188{
ce73e10e
KDW		 189 if (card->info.type == QETH_CARD_TYPE_OSN)
190 return RTN_UNSPEC;
191 if (is_broadcast_ether_addr(skb->data))
192 return RTN_BROADCAST;
193 if (is_multicast_ether_addr(skb->data))
194 return RTN_MULTICAST;
195 return RTN_UNSPEC;
4a71df50
FB		 196}
197
cef6ff22
JW		 198static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr,
199 struct sk_buff *skb)
4d7def2a
TR		 200{
201 struct iphdr *iph = ip_hdr(skb);
202
203 /* tcph->check contains already the pseudo hdr checksum
204 * so just set the header flags
205 */
206 if (iph->protocol == IPPROTO_UDP)
207 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
208 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
209 QETH_HDR_EXT_CSUM_HDR_REQ;
210 iph->check = 0;
211 if (card->options.performance_stats)
212 card->perf_stats.tx_csum++;
213}
214
ae79fe03
JW		 215static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb,
216 int cast_type, unsigned int data_len)
4a71df50 217{
683d718a 218 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
4a71df50
FB		 219
220 memset(hdr, 0, sizeof(struct qeth_hdr));
221 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
ae79fe03 222 hdr->hdr.l2.pkt_length = data_len;
4a71df50
FB		 223
224 /* set byte byte 3 to casting flags */
225 if (cast_type == RTN_MULTICAST)
226 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
227 else if (cast_type == RTN_BROADCAST)
228 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
229 else
ce73e10e 230 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
4a71df50 231
4a71df50
FB		 232 /* VSWITCH relies on the VLAN
233 * information to be present in
234 * the QDIO header */
235 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
236 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
237 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
238 }
239}
240
2aa48671
JW		 241static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode)
242{
243 if (retcode)
244 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
245
246 switch (retcode) {
247 case IPA_RC_SUCCESS:
248 return 0;
249 case IPA_RC_L2_INVALID_VLAN_ID:
250 return -EINVAL;
251 case IPA_RC_L2_DUP_VLAN_ID:
252 return -EEXIST;
253 case IPA_RC_L2_VLAN_ID_NOT_FOUND:
254 return -ENOENT;
255 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
256 return -EPERM;
257 case -ENOMEM:
258 return -ENOMEM;
259 default:
260 return -EIO;
261 }
262}
263
4a71df50 264static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
2aa48671
JW		 265 struct qeth_reply *reply,
266 unsigned long data)
4a71df50 267{
2aa48671 268 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50 269
847a50fd 270 QETH_CARD_TEXT(card, 2, "L2sdvcb");
4a71df50 271 if (cmd->hdr.return_code) {
2aa48671
JW		 272 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n",
273 cmd->data.setdelvlan.vlan_id,
274 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
847a50fd
CO		 275 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
276 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
4a71df50
FB		 277 }
278 return 0;
279}
280
281static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
2aa48671 282 enum qeth_ipa_cmds ipacmd)
4a71df50
FB		 283{
284 struct qeth_ipa_cmd *cmd;
285 struct qeth_cmd_buffer *iob;
286
847a50fd 287 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
4a71df50 288 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
1aec42bc
TR		 289 if (!iob)
290 return -ENOMEM;
ff5caa7a 291 cmd = __ipa_cmd(iob);
4a71df50 292 cmd->data.setdelvlan.vlan_id = i;
2aa48671
JW		 293 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob,
294 qeth_l2_send_setdelvlan_cb, NULL));
4a71df50
FB		 295}
296
70919e23 297static void qeth_l2_process_vlans(struct qeth_card *card)
4a71df50
FB		 298{
299 struct qeth_vlan_vid *id;
847a50fd 300 QETH_CARD_TEXT(card, 3, "L2prcvln");
4a71df50
FB		 301 spin_lock_bh(&card->vlanlock);
302 list_for_each_entry(id, &card->vid_list, list) {
70919e23 303 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
4a71df50
FB		 304 }
305 spin_unlock_bh(&card->vlanlock);
306}
307
80d5c368
PM		 308static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
309 __be16 proto, u16 vid)
4a71df50 310{
509e2562 311 struct qeth_card *card = dev->ml_priv;
4a71df50 312 struct qeth_vlan_vid *id;
1aec42bc 313 int rc;
4a71df50 314
847a50fd 315 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
10651db7 316 if (!vid)
8e586137 317 return 0;
8e98ac48 318 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 319 QETH_CARD_TEXT(card, 3, "aidREC");
8e586137 320 return 0;
8e98ac48 321 }
4a71df50
FB		 322 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
323 if (id) {
324 id->vid = vid;
1aec42bc
TR		 325 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
326 if (rc) {
327 kfree(id);
328 return rc;
329 }
4a71df50
FB		 330 spin_lock_bh(&card->vlanlock);
331 list_add_tail(&id->list, &card->vid_list);
332 spin_unlock_bh(&card->vlanlock);
8e586137
JP		 333 } else {
334 return -ENOMEM;
4a71df50 335 }
8e586137 336 return 0;
4a71df50
FB		 337}
338
80d5c368
PM		 339static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
340 __be16 proto, u16 vid)
4a71df50
FB		 341{
342 struct qeth_vlan_vid *id, *tmpid = NULL;
509e2562 343 struct qeth_card *card = dev->ml_priv;
1aec42bc 344 int rc = 0;
4a71df50 345
847a50fd 346 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
8e98ac48 347 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 348 QETH_CARD_TEXT(card, 3, "kidREC");
8e586137 349 return 0;
8e98ac48 350 }
4a71df50
FB		 351 spin_lock_bh(&card->vlanlock);
352 list_for_each_entry(id, &card->vid_list, list) {
353 if (id->vid == vid) {
354 list_del(&id->list);
355 tmpid = id;
356 break;
357 }
358 }
359 spin_unlock_bh(&card->vlanlock);
360 if (tmpid) {
1aec42bc 361 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
4a71df50
FB		 362 kfree(tmpid);
363 }
fe5c8028 364 qeth_l2_set_rx_mode(card->dev);
1aec42bc 365 return rc;
4a71df50
FB		 366}
367
b2f4de8b 368static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
4a71df50 369{
d11ba0c4
PT		 370 QETH_DBF_TEXT(SETUP , 2, "stopcard");
371 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 372
373 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 374 if (card->read.state == CH_STATE_UP &&
375 card->write.state == CH_STATE_UP &&
376 (card->state == CARD_STATE_UP)) {
377 if (recovery_mode &&
378 card->info.type != QETH_CARD_TYPE_OSN) {
379 qeth_l2_stop(card->dev);
380 } else {
381 rtnl_lock();
382 dev_close(card->dev);
383 rtnl_unlock();
384 }
70919e23 385 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
4a71df50
FB		 386 card->state = CARD_STATE_SOFTSETUP;
387 }
388 if (card->state == CARD_STATE_SOFTSETUP) {
c07cbf2e 389 qeth_l2_del_all_macs(card);
4a71df50
FB		 390 qeth_clear_ipacmd_list(card);
391 card->state = CARD_STATE_HARDSETUP;
392 }
393 if (card->state == CARD_STATE_HARDSETUP) {
394 qeth_qdio_clear_card(card, 0);
395 qeth_clear_qdio_buffers(card);
396 qeth_clear_working_pool_list(card);
397 card->state = CARD_STATE_DOWN;
398 }
399 if (card->state == CARD_STATE_DOWN) {
400 qeth_clear_cmd_buffers(&card->read);
401 qeth_clear_cmd_buffers(&card->write);
402 }
4a71df50
FB		 403}
404
a1c3ed4c
FB		 405static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
406 int budget, int *done)
4a71df50 407{
a1c3ed4c 408 int work_done = 0;
4a71df50
FB		 409 struct sk_buff *skb;
410 struct qeth_hdr *hdr;
4a71df50
FB		 411 unsigned int len;
412
a1c3ed4c 413 *done = 0;
18af5c17 414 WARN_ON_ONCE(!budget);
a1c3ed4c
FB		 415 while (budget) {
416 skb = qeth_core_get_next_skb(card,
b3332930 417 &card->qdio.in_q->bufs[card->rx.b_index],
a1c3ed4c
FB		 418 &card->rx.b_element, &card->rx.e_offset, &hdr);
419 if (!skb) {
420 *done = 1;
421 break;
4a71df50 422 }
4a71df50
FB		 423 switch (hdr->hdr.l2.id) {
424 case QETH_HEADER_TYPE_LAYER2:
4a71df50 425 skb->protocol = eth_type_trans(skb, skb->dev);
4d7def2a
TR		 426 if ((card->dev->features & NETIF_F_RXCSUM)
427 && ((hdr->hdr.l2.flags[1] &
428 (QETH_HDR_EXT_CSUM_HDR_REQ |
429 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
430 (QETH_HDR_EXT_CSUM_HDR_REQ |
431 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
432 skb->ip_summed = CHECKSUM_UNNECESSARY;
433 else
434 skb->ip_summed = CHECKSUM_NONE;
12883725
UB		 435 if (skb->protocol == htons(ETH_P_802_2))
436 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
4a71df50 437 len = skb->len;
9abfa8cb 438 napi_gro_receive(&card->napi, skb);
4a71df50
FB		 439 break;
440 case QETH_HEADER_TYPE_OSN:
2d488c2f
UB		 441 if (card->info.type == QETH_CARD_TYPE_OSN) {
442 skb_push(skb, sizeof(struct qeth_hdr));
443 skb_copy_to_linear_data(skb, hdr,
4a71df50 444 sizeof(struct qeth_hdr));
2d488c2f
UB		 445 len = skb->len;
446 card->osn_info.data_cb(skb);
447 break;
448 }
449 /* else unknown */
4a71df50
FB		 450 default:
451 dev_kfree_skb_any(skb);
847a50fd 452 QETH_CARD_TEXT(card, 3, "inbunkno");
d11ba0c4 453 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 454 continue;
455 }
a1c3ed4c
FB		 456 work_done++;
457 budget--;
4a71df50
FB		 458 card->stats.rx_packets++;
459 card->stats.rx_bytes += len;
460 }
a1c3ed4c
FB		 461 return work_done;
462}
463
4a71df50
FB		 464static int qeth_l2_request_initial_mac(struct qeth_card *card)
465{
466 int rc = 0;
467 char vendor_pre[] = {0x02, 0x00, 0x00};
468
ec61bd2f 469 QETH_DBF_TEXT(SETUP, 2, "l2reqmac");
d11ba0c4 470 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
4a71df50 471
ec61bd2f
JW		 472 if (MACHINE_IS_VM) {
473 rc = qeth_vm_request_mac(card);
474 if (!rc)
475 goto out;
476 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n",
477 CARD_BUS_ID(card), rc);
478 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc);
479 /* fall back to alternative mechanism: */
480 }
481
5113fec0
UB		 482 if (card->info.type == QETH_CARD_TYPE_IQD ||
483 card->info.type == QETH_CARD_TYPE_OSM ||
484 card->info.type == QETH_CARD_TYPE_OSX ||
485 card->info.guestlan) {
4a71df50
FB		 486 rc = qeth_setadpparms_change_macaddr(card);
487 if (rc) {
14cc21b6
FB		 488 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
489 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1aec42bc 490 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
4a71df50
FB		 491 return rc;
492 }
4a71df50 493 } else {
1833611d 494 eth_random_addr(card->dev->dev_addr);
4a71df50
FB		 495 memcpy(card->dev->dev_addr, vendor_pre, 3);
496 }
ec61bd2f
JW		 497out:
498 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len);
4a71df50
FB		 499 return 0;
500}
501
502static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
503{
504 struct sockaddr *addr = p;
509e2562 505 struct qeth_card *card = dev->ml_priv;
bcacfcbc 506 u8 old_addr[ETH_ALEN];
4a71df50
FB		 507 int rc = 0;
508
847a50fd 509 QETH_CARD_TEXT(card, 3, "setmac");
4a71df50 510
5113fec0
UB		 511 if (card->info.type == QETH_CARD_TYPE_OSN ||
512 card->info.type == QETH_CARD_TYPE_OSM ||
513 card->info.type == QETH_CARD_TYPE_OSX) {
847a50fd 514 QETH_CARD_TEXT(card, 3, "setmcTYP");
4a71df50
FB		 515 return -EOPNOTSUPP;
516 }
99f0b85d 517 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN);
bcacfcbc
JW		 518 if (!is_valid_ether_addr(addr->sa_data))
519 return -EADDRNOTAVAIL;
520
8e98ac48 521 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 522 QETH_CARD_TEXT(card, 3, "setmcREC");
8e98ac48
UB		 523 return -ERESTARTSYS;
524 }
bcacfcbc
JW		 525
526 if (!qeth_card_hw_is_reachable(card)) {
527 ether_addr_copy(dev->dev_addr, addr->sa_data);
528 return 0;
529 }
530
531 /* don't register the same address twice */
532 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) &&
533 (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
534 return 0;
535
536 /* add the new address, switch over, drop the old */
537 rc = qeth_l2_send_setmac(card, addr->sa_data);
538 if (rc)
539 return rc;
540 ether_addr_copy(old_addr, dev->dev_addr);
541 ether_addr_copy(dev->dev_addr, addr->sa_data);
542
543 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)
544 qeth_l2_remove_mac(card, old_addr);
545 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
546 return 0;
4a71df50
FB		 547}
548
0db587b0
EC		 549static void qeth_promisc_to_bridge(struct qeth_card *card)
550{
551 struct net_device *dev = card->dev;
552 enum qeth_ipa_promisc_modes promisc_mode;
553 int role;
554 int rc;
555
556 QETH_CARD_TEXT(card, 3, "pmisc2br");
557
558 if (!card->options.sbp.reflect_promisc)
559 return;
560 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
561 : SET_PROMISC_MODE_OFF;
562 if (promisc_mode == card->info.promisc_mode)
563 return;
564
565 if (promisc_mode == SET_PROMISC_MODE_ON) {
566 if (card->options.sbp.reflect_promisc_primary)
567 role = QETH_SBP_ROLE_PRIMARY;
568 else
569 role = QETH_SBP_ROLE_SECONDARY;
570 } else
571 role = QETH_SBP_ROLE_NONE;
572
573 rc = qeth_bridgeport_setrole(card, role);
574 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
575 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
576 if (!rc) {
577 card->options.sbp.role = role;
578 card->info.promisc_mode = promisc_mode;
579 }
fe5c8028
LD		 580
581}
582/* New MAC address is added to the hash table and marked to be written on card
583 * only if there is not in the hash table storage already
584 *
585*/
4641b027 586static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha)
fe5c8028 587{
cef6ff22 588 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
fe5c8028
LD		 589 struct qeth_mac *mac;
590
cef6ff22 591 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) {
99f0b85d 592 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) {
5f78e29c 593 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
fe5c8028
LD		 594 return;
595 }
596 }
597
598 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
fe5c8028
LD		 599 if (!mac)
600 return;
601
99f0b85d 602 ether_addr_copy(mac->mac_addr, ha->addr);
5f78e29c 603 mac->disp_flag = QETH_DISP_ADDR_ADD;
fe5c8028 604
cef6ff22 605 hash_add(card->mac_htable, &mac->hnode, mac_hash);
0db587b0
EC		 606}
607
fe5c8028 608static void qeth_l2_set_rx_mode(struct net_device *dev)
4a71df50 609{
509e2562 610 struct qeth_card *card = dev->ml_priv;
ccffad25 611 struct netdev_hw_addr *ha;
fe5c8028
LD		 612 struct qeth_mac *mac;
613 struct hlist_node *tmp;
614 int i;
615 int rc;
4a71df50
FB		 616
617 if (card->info.type == QETH_CARD_TYPE_OSN)
fe5c8028 618 return;
4a71df50 619
847a50fd 620 QETH_CARD_TEXT(card, 3, "setmulti");
8e98ac48
UB		 621 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
622 (card->state != CARD_STATE_UP))
623 return;
fe5c8028 624
4a71df50 625 spin_lock_bh(&card->mclock);
fe5c8028 626
22bedad3 627 netdev_for_each_mc_addr(ha, dev)
4641b027 628 qeth_l2_add_mac(card, ha);
32e7bfc4 629 netdev_for_each_uc_addr(ha, dev)
4641b027 630 qeth_l2_add_mac(card, ha);
fe5c8028
LD		 631
632 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
00c163f1
JW		 633 switch (mac->disp_flag) {
634 case QETH_DISP_ADDR_DELETE:
8174aa8a 635 qeth_l2_remove_mac(card, mac->mac_addr);
fe5c8028
LD		 636 hash_del(&mac->hnode);
637 kfree(mac);
00c163f1
JW		 638 break;
639 case QETH_DISP_ADDR_ADD:
8174aa8a 640 rc = qeth_l2_write_mac(card, mac->mac_addr);
fe5c8028
LD		 641 if (rc) {
642 hash_del(&mac->hnode);
643 kfree(mac);
00c163f1
JW		 644 break;
645 }
646 /* fall through */
647 default:
648 /* for next call to set_rx_mode(): */
5f78e29c 649 mac->disp_flag = QETH_DISP_ADDR_DELETE;
00c163f1 650 }
fe5c8028 651 }
7db2266a 652
4a71df50 653 spin_unlock_bh(&card->mclock);
fe5c8028 654
0db587b0
EC		 655 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
656 qeth_setadp_promisc_mode(card);
657 else
658 qeth_promisc_to_bridge(card);
4a71df50
FB		 659}
660
7286384b
JW		 661static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb,
662 struct qeth_qdio_out_q *queue, int cast_type)
4a71df50 663{
7286384b
JW		 664 unsigned int data_offset = ETH_HLEN;
665 struct qeth_hdr *hdr;
4a71df50 666 int rc;
4a71df50 667
7286384b
JW		 668 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
669 if (!hdr)
670 return -ENOMEM;
ae79fe03 671 qeth_l2_fill_header(hdr, skb, cast_type, skb->len);
7286384b
JW		 672 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr),
673 data_offset);
290b8348 674
7286384b
JW		 675 if (!qeth_get_elements_no(card, skb, 1, data_offset)) {
676 rc = -E2BIG;
677 goto out;
4a71df50 678 }
7c2e9ba3 679 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
f1588177 680 sizeof(*hdr) + data_offset);
7286384b
JW		 681out:
682 if (rc)
683 kmem_cache_free(qeth_core_header_cache, hdr);
684 return rc;
685}
4a71df50 686
7286384b
JW		 687static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb,
688 struct qeth_qdio_out_q *queue, int cast_type)
689{
0d6f02d3 690 int push_len = sizeof(struct qeth_hdr);
7286384b 691 unsigned int elements, nr_frags;
0d6f02d3
JW		 692 unsigned int hdr_elements = 0;
693 struct qeth_hdr *hdr = NULL;
694 unsigned int hd_len = 0;
7286384b 695 int rc;
4a71df50 696
d52aec97
EC		 697 /* fix hardware limitation: as long as we do not have sbal
698 * chaining we can not send long frag lists
699 */
7286384b
JW		 700 if (!qeth_get_elements_no(card, skb, 0, 0)) {
701 rc = skb_linearize(skb);
6059c905
EC		 702
703 if (card->options.performance_stats) {
7286384b 704 if (rc)
6059c905
EC		 705 card->perf_stats.tx_linfail++;
706 else
707 card->perf_stats.tx_lin++;
708 }
7286384b
JW		 709 if (rc)
710 return rc;
d52aec97 711 }
7286384b 712 nr_frags = skb_shinfo(skb)->nr_frags;
d52aec97 713
0d6f02d3
JW		 714 rc = skb_cow_head(skb, push_len);
715 if (rc)
716 return rc;
717 push_len = qeth_push_hdr(skb, &hdr, push_len);
718 if (push_len < 0)
719 return push_len;
720 if (!push_len) {
721 /* hdr was allocated from cache */
722 hd_len = sizeof(*hdr);
723 hdr_elements = 1;
724 }
725 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len);
726 if (skb->ip_summed == CHECKSUM_PARTIAL)
727 qeth_l2_hdr_csum(card, hdr, skb);
4a71df50 728
0d6f02d3 729 elements = qeth_get_elements_no(card, skb, hdr_elements, 0);
64ef8957 730 if (!elements) {
7286384b
JW		 731 rc = -E2BIG;
732 goto out;
f61a0d05 733 }
0d6f02d3
JW		 734 elements += hdr_elements;
735
736 /* TODO: remove the skb_orphan() once TX completion is fast enough */
737 skb_orphan(skb);
738 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements);
7286384b 739out:
4a71df50 740 if (!rc) {
886e1974
JW		 741 if (card->options.performance_stats && nr_frags) {
742 card->perf_stats.sg_skbs_sent++;
743 /* nr_frags + skb->data */
744 card->perf_stats.sg_frags_sent += nr_frags + 1;
d52aec97 745 }
4a71df50 746 } else {
0d6f02d3
JW		 747 if (hd_len)
748 kmem_cache_free(qeth_core_header_cache, hdr);
749 if (rc == -EBUSY)
750 /* roll back to ETH header */
751 skb_pull(skb, push_len);
7286384b
JW		 752 }
753 return rc;
754}
683d718a 755
7286384b
JW		 756static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
757 struct qeth_qdio_out_q *queue)
758{
759 unsigned int elements;
760 struct qeth_hdr *hdr;
761
762 if (skb->protocol == htons(ETH_P_IPV6))
763 return -EPROTONOSUPPORT;
764
765 hdr = (struct qeth_hdr *)skb->data;
766 elements = qeth_get_elements_no(card, skb, 0, 0);
767 if (!elements)
768 return -E2BIG;
769 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr)))
770 return -EINVAL;
9c3bfda9 771 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements);
7286384b
JW		 772}
773
774static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
775 struct net_device *dev)
776{
777 struct qeth_card *card = dev->ml_priv;
778 int cast_type = qeth_l2_get_cast_type(card, skb);
779 struct qeth_qdio_out_q *queue;
780 int tx_bytes = skb->len;
781 int rc;
782
783 if (card->qdio.do_prio_queueing || (cast_type &&
784 card->info.is_multicast_different))
785 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
786 qeth_get_ip_version(skb), cast_type)];
787 else
788 queue = card->qdio.out_qs[card->qdio.default_out_queue];
789
790 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
791 card->stats.tx_carrier_errors++;
792 goto tx_drop;
4a71df50
FB		 793 }
794
7286384b
JW		 795 if (card->options.performance_stats) {
796 card->perf_stats.outbound_cnt++;
797 card->perf_stats.outbound_start_time = qeth_get_micros();
798 }
799 netif_stop_queue(dev);
800
801 switch (card->info.type) {
802 case QETH_CARD_TYPE_OSN:
803 rc = qeth_l2_xmit_osn(card, skb, queue);
804 break;
805 case QETH_CARD_TYPE_IQD:
806 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type);
807 break;
808 default:
809 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type);
810 }
811
812 if (!rc) {
813 card->stats.tx_packets++;
814 card->stats.tx_bytes += tx_bytes;
815 if (card->options.performance_stats)
816 card->perf_stats.outbound_time += qeth_get_micros() -
817 card->perf_stats.outbound_start_time;
818 netif_wake_queue(dev);
819 return NETDEV_TX_OK;
820 } else if (rc == -EBUSY) {
821 return NETDEV_TX_BUSY;
822 } /* else fall through */
4a71df50
FB		 823
824tx_drop:
825 card->stats.tx_dropped++;
826 card->stats.tx_errors++;
4a71df50 827 dev_kfree_skb_any(skb);
d0ec0f54 828 netif_wake_queue(dev);
4a71df50
FB		 829 return NETDEV_TX_OK;
830}
831
39423440 832static int __qeth_l2_open(struct net_device *dev)
4a71df50 833{
509e2562 834 struct qeth_card *card = dev->ml_priv;
a1c3ed4c 835 int rc = 0;
4a71df50 836
847a50fd 837 QETH_CARD_TEXT(card, 4, "qethopen");
39423440
UB		 838 if (card->state == CARD_STATE_UP)
839 return rc;
4a71df50
FB		 840 if (card->state != CARD_STATE_SOFTSETUP)
841 return -ENODEV;
842
843 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
844 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
847a50fd 845 QETH_CARD_TEXT(card, 4, "nomacadr");
4a71df50
FB		 846 return -EPERM;
847 }
848 card->data.state = CH_STATE_UP;
849 card->state = CARD_STATE_UP;
4a71df50
FB		 850 netif_start_queue(dev);
851
a1c3ed4c
FB		 852 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
853 napi_enable(&card->napi);
854 napi_schedule(&card->napi);
855 } else
856 rc = -EIO;
857 return rc;
4a71df50
FB		 858}
859
39423440
UB		 860static int qeth_l2_open(struct net_device *dev)
861{
862 struct qeth_card *card = dev->ml_priv;
863
864 QETH_CARD_TEXT(card, 5, "qethope_");
865 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
866 QETH_CARD_TEXT(card, 3, "openREC");
867 return -ERESTARTSYS;
868 }
869 return __qeth_l2_open(dev);
870}
871
4a71df50
FB		 872static int qeth_l2_stop(struct net_device *dev)
873{
509e2562 874 struct qeth_card *card = dev->ml_priv;
4a71df50 875
847a50fd 876 QETH_CARD_TEXT(card, 4, "qethstop");
4a71df50 877 netif_tx_disable(dev);
a1c3ed4c 878 if (card->state == CARD_STATE_UP) {
4a71df50 879 card->state = CARD_STATE_SOFTSETUP;
a1c3ed4c
FB		 880 napi_disable(&card->napi);
881 }
4a71df50
FB		 882 return 0;
883}
884
2d2ebb3e
JW		 885static const struct device_type qeth_l2_devtype = {
886 .name = "qeth_layer2",
887 .groups = qeth_l2_attr_groups,
888};
889
4a71df50
FB		 890static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
891{
892 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
9111e788 893 int rc;
4a71df50 894
2d2ebb3e
JW		 895 if (gdev->dev.type == &qeth_generic_devtype) {
896 rc = qeth_l2_create_device_attributes(&gdev->dev);
897 if (rc)
898 return rc;
899 }
4a71df50 900 INIT_LIST_HEAD(&card->vid_list);
fe5c8028 901 hash_init(card->mac_htable);
4a71df50 902 card->options.layer2 = 1;
1da74b1c 903 card->info.hwtrap = 0;
caa1f0b1 904 qeth_l2_vnicc_set_defaults(card);
4a71df50
FB		 905 return 0;
906}
907
908static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
909{
910 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
911
2d2ebb3e
JW		 912 if (cgdev->dev.type == &qeth_generic_devtype)
913 qeth_l2_remove_device_attributes(&cgdev->dev);
f2148565 914 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 915 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
916
70919e23 917 if (cgdev->state == CCWGROUP_ONLINE)
4a71df50 918 qeth_l2_set_offline(cgdev);
4a71df50
FB		 919
920 if (card->dev) {
921 unregister_netdev(card->dev);
6be68739 922 free_netdev(card->dev);
4a71df50
FB		 923 card->dev = NULL;
924 }
4a71df50
FB		 925 return;
926}
927
0fc0b732 928static const struct ethtool_ops qeth_l2_ethtool_ops = {
4a71df50 929 .get_link = ethtool_op_get_link,
4a71df50
FB		 930 .get_strings = qeth_core_get_strings,
931 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 932 .get_sset_count = qeth_core_get_sset_count,
4a71df50 933 .get_drvinfo = qeth_core_get_drvinfo,
993e19c0 934 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
4a71df50
FB		 935};
936
0fc0b732 937static const struct ethtool_ops qeth_l2_osn_ops = {
4a71df50
FB		 938 .get_strings = qeth_core_get_strings,
939 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 940 .get_sset_count = qeth_core_get_sset_count,
4a71df50
FB		 941 .get_drvinfo = qeth_core_get_drvinfo,
942};
943
3d58cefd 944static const struct net_device_ops qeth_l2_netdev_ops = {
8403b13c
FB		 945 .ndo_open = qeth_l2_open,
946 .ndo_stop = qeth_l2_stop,
947 .ndo_get_stats = qeth_get_stats,
948 .ndo_start_xmit = qeth_l2_hard_start_xmit,
6d69b1f1 949 .ndo_features_check = qeth_features_check,
8403b13c 950 .ndo_validate_addr = eth_validate_addr,
fe5c8028 951 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
942d6984 952 .ndo_do_ioctl = qeth_do_ioctl,
8403b13c
FB		 953 .ndo_set_mac_address = qeth_l2_set_mac_address,
954 .ndo_change_mtu = qeth_change_mtu,
955 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
956 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
957 .ndo_tx_timeout = qeth_tx_timeout,
8f43fb00
TR		 958 .ndo_fix_features = qeth_fix_features,
959 .ndo_set_features = qeth_set_features
8403b13c
FB		 960};
961
4a71df50
FB		 962static int qeth_l2_setup_netdev(struct qeth_card *card)
963{
964 switch (card->info.type) {
4a71df50 965 case QETH_CARD_TYPE_IQD:
c835a677
TG		 966 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
967 ether_setup);
4a71df50
FB		 968 break;
969 case QETH_CARD_TYPE_OSN:
c835a677
TG		 970 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
971 ether_setup);
4a71df50
FB		 972 break;
973 default:
974 card->dev = alloc_etherdev(0);
975 }
976
977 if (!card->dev)
978 return -ENODEV;
979
509e2562 980 card->dev->ml_priv = card;
d3aacac4 981 card->dev->priv_flags |= IFF_UNICAST_FLT;
4a71df50 982 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
4a71df50 983 card->dev->mtu = card->info.initial_mtu;
46b3ef4c
JW		 984 card->dev->min_mtu = 64;
985 card->dev->max_mtu = ETH_MAX_MTU;
8403b13c 986 card->dev->netdev_ops = &qeth_l2_netdev_ops;
25e2c341
JW		 987 if (card->info.type == QETH_CARD_TYPE_OSN) {
988 card->dev->ethtool_ops = &qeth_l2_osn_ops;
989 card->dev->flags |= IFF_NOARP;
990 } else {
991 card->dev->ethtool_ops = &qeth_l2_ethtool_ops;
992 }
9400c53f
JW		 993
994 if (card->info.type == QETH_CARD_TYPE_OSM)
995 card->dev->features |= NETIF_F_VLAN_CHALLENGED;
996 else
997 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
0f342945
JW		 998
999 if (card->info.type != QETH_CARD_TYPE_OSN &&
1000 card->info.type != QETH_CARD_TYPE_IQD) {
1001 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING;
1002 card->dev->needed_headroom = sizeof(struct qeth_hdr);
1003 card->dev->hw_features |= NETIF_F_SG;
1004 card->dev->vlan_features |= NETIF_F_SG;
1005 }
1006
4d7def2a 1007 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
6d69b1f1 1008 card->dev->features |= NETIF_F_SG;
8f43fb00 1009 /* OSA 3S and earlier has no RX/TX support */
9bdc4411 1010 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
8f43fb00 1011 card->dev->hw_features |= NETIF_F_IP_CSUM;
9bdc4411
HW		 1012 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1013 }
1014 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
8f43fb00 1015 card->dev->hw_features |= NETIF_F_RXCSUM;
9bdc4411
HW		 1016 card->dev->vlan_features |= NETIF_F_RXCSUM;
1017 }
4d7def2a 1018 }
0d6f02d3 1019
4a71df50
FB		 1020 card->info.broadcast_capable = 1;
1021 qeth_l2_request_initial_mac(card);
1022 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
d73ef324 1023 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
e5ebe632 1024 netif_carrier_off(card->dev);
4a71df50
FB		 1025 return register_netdev(card->dev);
1026}
1027
4d7def2a
TR		 1028static int qeth_l2_start_ipassists(struct qeth_card *card)
1029{
1030 /* configure isolation level */
1031 if (qeth_set_access_ctrl_online(card, 0))
1032 return -ENODEV;
4d7def2a
TR		 1033 return 0;
1034}
1035
521c10ea
JW		 1036static void qeth_l2_trace_features(struct qeth_card *card)
1037{
a45b3faf
HW		 1038 /* Set BridgePort features */
1039 QETH_CARD_TEXT(card, 2, "featuSBP");
521c10ea
JW		 1040 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
1041 sizeof(card->options.sbp.supported_funcs));
a45b3faf
HW		 1042 /* VNIC Characteristics features */
1043 QETH_CARD_TEXT(card, 2, "feaVNICC");
1044 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
1045 sizeof(card->options.vnicc.sup_chars));
521c10ea
JW		 1046}
1047
4a71df50
FB		 1048static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1049{
1050 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1051 int rc = 0;
1052 enum qeth_card_states recover_flag;
1053
9dc48ccc 1054 mutex_lock(&card->discipline_mutex);
c4949f07 1055 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 1056 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1057 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50 1058
4a71df50 1059 recover_flag = card->state;
4a71df50
FB		 1060 rc = qeth_core_hardsetup_card(card);
1061 if (rc) {
1aec42bc 1062 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
aa909224 1063 rc = -ENODEV;
4a71df50
FB		 1064 goto out_remove;
1065 }
c044dc21
EC		 1066 qeth_bridgeport_query_support(card);
1067 if (card->options.sbp.supported_funcs)
1068 dev_info(&card->gdev->dev,
9c23f4da 1069 "The device represents a Bridge Capable Port\n");
4a71df50 1070
aa909224
UB		 1071 if (!card->dev && qeth_l2_setup_netdev(card)) {
1072 rc = -ENODEV;
4a71df50 1073 goto out_remove;
aa909224 1074 }
4a71df50 1075
bcacfcbc
JW		 1076 if (card->info.type != QETH_CARD_TYPE_OSN &&
1077 !qeth_l2_send_setmac(card, card->dev->dev_addr))
1078 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
4a71df50 1079
1da74b1c
FB		 1080 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1081 if (card->info.hwtrap &&
1082 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1083 card->info.hwtrap = 0;
1084 } else
1085 card->info.hwtrap = 0;
1086
a45b3faf
HW		 1087 /* for the rx_bcast characteristic, init VNICC after setmac */
1088 qeth_l2_vnicc_init(card);
1089
1090 qeth_trace_features(card);
1091 qeth_l2_trace_features(card);
1092
b4d72c08
EC		 1093 qeth_l2_setup_bridgeport_attrs(card);
1094
4a71df50
FB		 1095 card->state = CARD_STATE_HARDSETUP;
1096 qeth_print_status_message(card);
1097
1098 /* softsetup */
d11ba0c4 1099 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50 1100
5113fec0 1101 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
0f54761d 1102 (card->info.type == QETH_CARD_TYPE_OSX)) {
8f43fb00
TR		 1103 rc = qeth_l2_start_ipassists(card);
1104 if (rc)
0f54761d 1105 goto out_remove;
0f54761d 1106 }
5113fec0 1107
9400c53f 1108 if (card->info.type != QETH_CARD_TYPE_OSN)
70919e23 1109 qeth_l2_process_vlans(card);
4a71df50
FB		 1110
1111 netif_tx_disable(card->dev);
1112
1113 rc = qeth_init_qdio_queues(card);
1114 if (rc) {
d11ba0c4 1115 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
aa909224 1116 rc = -ENODEV;
4a71df50
FB		 1117 goto out_remove;
1118 }
1119 card->state = CARD_STATE_SOFTSETUP;
2b6203bb
UB		 1120 if (card->lan_online)
1121 netif_carrier_on(card->dev);
1122 else
1123 netif_carrier_off(card->dev);
4a71df50
FB		 1124
1125 qeth_set_allowed_threads(card, 0xffffffff, 0);
1126 if (recover_flag == CARD_STATE_RECOVER) {
1127 if (recovery_mode &&
1128 card->info.type != QETH_CARD_TYPE_OSN) {
39423440 1129 __qeth_l2_open(card->dev);
4a71df50
FB		 1130 } else {
1131 rtnl_lock();
1132 dev_open(card->dev);
1133 rtnl_unlock();
1134 }
1135 /* this also sets saved unicast addresses */
fe5c8028 1136 qeth_l2_set_rx_mode(card->dev);
e830baa9
HW		 1137 rtnl_lock();
1138 qeth_recover_features(card->dev);
1139 rtnl_unlock();
4a71df50
FB		 1140 }
1141 /* let user_space know that device is online */
1142 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
c4949f07 1143 mutex_unlock(&card->conf_mutex);
9dc48ccc 1144 mutex_unlock(&card->discipline_mutex);
4a71df50 1145 return 0;
aa909224 1146
4a71df50 1147out_remove:
4a71df50
FB		 1148 qeth_l2_stop_card(card, 0);
1149 ccw_device_set_offline(CARD_DDEV(card));
1150 ccw_device_set_offline(CARD_WDEV(card));
1151 ccw_device_set_offline(CARD_RDEV(card));
22ae2790 1152 qdio_free(CARD_DDEV(card));
4a71df50
FB		 1153 if (recover_flag == CARD_STATE_RECOVER)
1154 card->state = CARD_STATE_RECOVER;
1155 else
1156 card->state = CARD_STATE_DOWN;
c4949f07 1157 mutex_unlock(&card->conf_mutex);
9dc48ccc 1158 mutex_unlock(&card->discipline_mutex);
aa909224 1159 return rc;
4a71df50
FB		 1160}
1161
1162static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1163{
1164 return __qeth_l2_set_online(gdev, 0);
1165}
1166
1167static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1168 int recovery_mode)
1169{
1170 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1171 int rc = 0, rc2 = 0, rc3 = 0;
1172 enum qeth_card_states recover_flag;
1173
9dc48ccc 1174 mutex_lock(&card->discipline_mutex);
c4949f07 1175 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 1176 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1177 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 1178
1179 if (card->dev && netif_carrier_ok(card->dev))
1180 netif_carrier_off(card->dev);
1181 recover_flag = card->state;
1da74b1c
FB		 1182 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1183 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1184 card->info.hwtrap = 1;
1185 }
0f5623c9 1186 qeth_l2_stop_card(card, recovery_mode);
4a71df50
FB		 1187 rc = ccw_device_set_offline(CARD_DDEV(card));
1188 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1189 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1190 if (!rc)
1191 rc = (rc2) ? rc2 : rc3;
1192 if (rc)
d11ba0c4 1193 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
22ae2790 1194 qdio_free(CARD_DDEV(card));
4a71df50
FB		 1195 if (recover_flag == CARD_STATE_UP)
1196 card->state = CARD_STATE_RECOVER;
1197 /* let user_space know that device is offline */
1198 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
c4949f07 1199 mutex_unlock(&card->conf_mutex);
9dc48ccc 1200 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 1201 return 0;
1202}
1203
1204static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1205{
1206 return __qeth_l2_set_offline(cgdev, 0);
1207}
1208
1209static int qeth_l2_recover(void *ptr)
1210{
1211 struct qeth_card *card;
1212 int rc = 0;
1213
1214 card = (struct qeth_card *) ptr;
847a50fd 1215 QETH_CARD_TEXT(card, 2, "recover1");
4a71df50
FB		 1216 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1217 return 0;
847a50fd 1218 QETH_CARD_TEXT(card, 2, "recover2");
74eacdb9
FB		 1219 dev_warn(&card->gdev->dev,
1220 "A recovery process has been started for the device\n");
65d8013c 1221 qeth_set_recovery_task(card);
4a71df50
FB		 1222 __qeth_l2_set_offline(card->gdev, 1);
1223 rc = __qeth_l2_set_online(card->gdev, 1);
4a71df50 1224 if (!rc)
74eacdb9
FB		 1225 dev_info(&card->gdev->dev,
1226 "Device successfully recovered!\n");
28a7e4c9 1227 else {
0f54761d
SR		 1228 qeth_close_dev(card);
1229 dev_warn(&card->gdev->dev, "The qeth device driver "
2efaf5ff 1230 "failed to recover an error on the device\n");
28a7e4c9 1231 }
65d8013c 1232 qeth_clear_recovery_task(card);
a1c3ed4c
FB		 1233 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1234 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
4a71df50
FB		 1235 return 0;
1236}
1237
1238static int __init qeth_l2_init(void)
1239{
74eacdb9 1240 pr_info("register layer 2 discipline\n");
4a71df50
FB		 1241 return 0;
1242}
1243
1244static void __exit qeth_l2_exit(void)
1245{
74eacdb9 1246 pr_info("unregister layer 2 discipline\n");
4a71df50
FB		 1247}
1248
bbcfcdc8
FB		 1249static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1250{
1251 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1252
1253 if (card->dev)
1254 netif_device_detach(card->dev);
1255 qeth_set_allowed_threads(card, 0, 1);
1256 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1257 if (gdev->state == CCWGROUP_OFFLINE)
1258 return 0;
1259 if (card->state == CARD_STATE_UP) {
1da74b1c
FB		 1260 if (card->info.hwtrap)
1261 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
bbcfcdc8
FB		 1262 __qeth_l2_set_offline(card->gdev, 1);
1263 } else
1264 __qeth_l2_set_offline(card->gdev, 0);
1265 return 0;
1266}
1267
1268static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1269{
1270 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1271 int rc = 0;
1272
1273 if (gdev->state == CCWGROUP_OFFLINE)
1274 goto out;
1275
1276 if (card->state == CARD_STATE_RECOVER) {
1277 rc = __qeth_l2_set_online(card->gdev, 1);
1278 if (rc) {
869da90b
UB		 1279 rtnl_lock();
1280 dev_close(card->dev);
1281 rtnl_unlock();
bbcfcdc8
FB		 1282 }
1283 } else
1284 rc = __qeth_l2_set_online(card->gdev, 0);
1285out:
1286 qeth_set_allowed_threads(card, 0xffffffff, 0);
1287 if (card->dev)
1288 netif_device_attach(card->dev);
1289 if (rc)
1290 dev_warn(&card->gdev->dev, "The qeth device driver "
1291 "failed to recover an error on the device\n");
1292 return rc;
1293}
1294
c044dc21
EC		 1295/* Returns zero if the command is successfully "consumed" */
1296static int qeth_l2_control_event(struct qeth_card *card,
1297 struct qeth_ipa_cmd *cmd)
1298{
1299 switch (cmd->hdr.command) {
9c23f4da
EC		 1300 case IPA_CMD_SETBRIDGEPORT_OSA:
1301 case IPA_CMD_SETBRIDGEPORT_IQD:
c044dc21
EC		 1302 if (cmd->data.sbp.hdr.command_code ==
1303 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1304 qeth_bridge_state_change(card, cmd);
1305 return 0;
1306 } else
1307 return 1;
1308 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1309 qeth_bridge_host_event(card, cmd);
1310 return 0;
1311 default:
1312 return 1;
1313 }
1314}
1315
c041f2d4 1316struct qeth_discipline qeth_l2_discipline = {
2d2ebb3e 1317 .devtype = &qeth_l2_devtype,
c041f2d4
SO		 1318 .start_poll = qeth_qdio_start_poll,
1319 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1320 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
d73ef324 1321 .process_rx_buffer = qeth_l2_process_inbound_buffer,
c041f2d4
SO		 1322 .recover = qeth_l2_recover,
1323 .setup = qeth_l2_probe_device,
4a71df50
FB		 1324 .remove = qeth_l2_remove_device,
1325 .set_online = qeth_l2_set_online,
1326 .set_offline = qeth_l2_set_offline,
bbcfcdc8
FB		 1327 .freeze = qeth_l2_pm_suspend,
1328 .thaw = qeth_l2_pm_resume,
1329 .restore = qeth_l2_pm_resume,
942d6984 1330 .do_ioctl = NULL,
c044dc21 1331 .control_event_handler = qeth_l2_control_event,
4a71df50 1332};
c041f2d4 1333EXPORT_SYMBOL_GPL(qeth_l2_discipline);
4a71df50
FB		 1334
1335static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1336 struct qeth_cmd_buffer *iob)
1337{
1338 unsigned long flags;
1339 int rc = 0;
1340
847a50fd 1341 QETH_CARD_TEXT(card, 5, "osndctrd");
4a71df50
FB		 1342
1343 wait_event(card->wait_q,
1344 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1345 qeth_prepare_control_data(card, len, iob);
847a50fd 1346 QETH_CARD_TEXT(card, 6, "osnoirqp");
4a71df50 1347 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
db71bbbd
JW		 1348 rc = ccw_device_start_timeout(CARD_WDEV(card), &card->write.ccw,
1349 (addr_t) iob, 0, 0, QETH_IPA_TIMEOUT);
4a71df50
FB		 1350 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1351 if (rc) {
14cc21b6 1352 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
4a71df50 1353 "ccw_device_start rc = %i\n", rc);
847a50fd 1354 QETH_CARD_TEXT_(card, 2, " err%d", rc);
4a71df50
FB		 1355 qeth_release_buffer(iob->channel, iob);
1356 atomic_set(&card->write.irq_pending, 0);
1357 wake_up(&card->wait_q);
1358 }
1359 return rc;
1360}
1361
1362static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1363 struct qeth_cmd_buffer *iob, int data_len)
1364{
1365 u16 s1, s2;
1366
847a50fd 1367 QETH_CARD_TEXT(card, 4, "osndipa");
4a71df50
FB		 1368
1369 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1370 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1371 s2 = (u16)data_len;
1372 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1373 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1374 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1375 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1376 return qeth_osn_send_control_data(card, s1, iob);
1377}
1378
1379int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1380{
1381 struct qeth_cmd_buffer *iob;
1382 struct qeth_card *card;
4a71df50 1383
4a71df50
FB		 1384 if (!dev)
1385 return -ENODEV;
509e2562 1386 card = dev->ml_priv;
4a71df50
FB		 1387 if (!card)
1388 return -ENODEV;
847a50fd 1389 QETH_CARD_TEXT(card, 2, "osnsdmc");
c3521254 1390 if (!qeth_card_hw_is_reachable(card))
4a71df50
FB		 1391 return -ENODEV;
1392 iob = qeth_wait_for_buffer(&card->write);
ff5caa7a
JW		 1393 memcpy(__ipa_cmd(iob), data, data_len);
1394 return qeth_osn_send_ipa_cmd(card, iob, data_len);
4a71df50
FB		 1395}
1396EXPORT_SYMBOL(qeth_osn_assist);
1397
1398int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1399 int (*assist_cb)(struct net_device *, void *),
1400 int (*data_cb)(struct sk_buff *))
1401{
1402 struct qeth_card *card;
1403
4a71df50
FB		 1404 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1405 if (*dev == NULL)
1406 return -ENODEV;
509e2562 1407 card = (*dev)->ml_priv;
4a71df50
FB		 1408 if (!card)
1409 return -ENODEV;
847a50fd 1410 QETH_CARD_TEXT(card, 2, "osnreg");
4a71df50
FB		 1411 if ((assist_cb == NULL) || (data_cb == NULL))
1412 return -EINVAL;
1413 card->osn_info.assist_cb = assist_cb;
1414 card->osn_info.data_cb = data_cb;
1415 return 0;
1416}
1417EXPORT_SYMBOL(qeth_osn_register);
1418
1419void qeth_osn_deregister(struct net_device *dev)
1420{
1421 struct qeth_card *card;
1422
4a71df50
FB		 1423 if (!dev)
1424 return;
509e2562 1425 card = dev->ml_priv;
4a71df50
FB		 1426 if (!card)
1427 return;
847a50fd 1428 QETH_CARD_TEXT(card, 2, "osndereg");
4a71df50
FB		 1429 card->osn_info.assist_cb = NULL;
1430 card->osn_info.data_cb = NULL;
1431 return;
1432}
1433EXPORT_SYMBOL(qeth_osn_deregister);
1434
b4d72c08
EC		 1435/* SETBRIDGEPORT support, async notifications */
1436
9f48b9db
EC		 1437enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1438
1439/**
1440 * qeth_bridge_emit_host_event() - bridgeport address change notification
1441 * @card: qeth_card structure pointer, for udev events.
1442 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1443 * and reset token and addr_lnid are unused and may be NULL.
1444 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1445 * object, 0 - addition of an object.
1446 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1447 * @token: "network token" structure identifying physical address of the port.
1448 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1449 *
1450 * This function is called when registrations and deregistrations are
1451 * reported by the hardware, and also when notifications are enabled -
1452 * for all currently registered addresses.
1453 */
1454static void qeth_bridge_emit_host_event(struct qeth_card *card,
1455 enum qeth_an_event_type evtype,
1456 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1457{
1458 char str[7][32];
1459 char *env[8];
1460 int i = 0;
1461
1462 switch (evtype) {
1463 case anev_reg_unreg:
1464 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1465 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1466 ? "deregister" : "register");
1467 env[i] = str[i]; i++;
1468 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1469 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1470 addr_lnid->lnid);
1471 env[i] = str[i]; i++;
1472 }
1473 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
9846e70b 1474 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
4d7def2a 1475 addr_lnid->mac);
9f48b9db
EC		 1476 env[i] = str[i]; i++;
1477 }
1478 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1479 token->cssid, token->ssid, token->devnum);
1480 env[i] = str[i]; i++;
1481 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1482 env[i] = str[i]; i++;
1483 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1484 token->chpid);
1485 env[i] = str[i]; i++;
1486 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1487 env[i] = str[i]; i++;
1488 break;
1489 case anev_abort:
1490 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1491 env[i] = str[i]; i++;
1492 break;
1493 case anev_reset:
1494 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1495 env[i] = str[i]; i++;
1496 break;
1497 }
1498 env[i] = NULL;
1499 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1500}
1501
b4d72c08
EC		 1502struct qeth_bridge_state_data {
1503 struct work_struct worker;
1504 struct qeth_card *card;
1505 struct qeth_sbp_state_change qports;
1506};
1507
1508static void qeth_bridge_state_change_worker(struct work_struct *work)
1509{
1510 struct qeth_bridge_state_data *data =
1511 container_of(work, struct qeth_bridge_state_data, worker);
1512 /* We are only interested in the first entry - local port */
1513 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1514 char env_locrem[32];
1515 char env_role[32];
1516 char env_state[32];
1517 char *env[] = {
1518 env_locrem,
1519 env_role,
1520 env_state,
1521 NULL
1522 };
1523
1524 /* Role should not change by itself, but if it did, */
1525 /* information from the hardware is authoritative. */
1526 mutex_lock(&data->card->conf_mutex);
1527 data->card->options.sbp.role = entry->role;
1528 mutex_unlock(&data->card->conf_mutex);
1529
1530 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1531 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1532 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1533 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1534 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1535 "<INVALID>");
1536 snprintf(env_state, sizeof(env_state), "STATE=%s",
1537 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1538 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1539 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1540 "<INVALID>");
1541 kobject_uevent_env(&data->card->gdev->dev.kobj,
1542 KOBJ_CHANGE, env);
1543 kfree(data);
1544}
1545
c044dc21
EC		 1546static void qeth_bridge_state_change(struct qeth_card *card,
1547 struct qeth_ipa_cmd *cmd)
b4d72c08
EC		 1548{
1549 struct qeth_sbp_state_change *qports =
1550 &cmd->data.sbp.data.state_change;
1551 struct qeth_bridge_state_data *data;
1552 int extrasize;
1553
1554 QETH_CARD_TEXT(card, 2, "brstchng");
1555 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
8a593148 1556 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
b4d72c08
EC		 1557 return;
1558 }
1559 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1560 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1561 GFP_ATOMIC);
1562 if (!data) {
1563 QETH_CARD_TEXT(card, 2, "BPSalloc");
1564 return;
1565 }
1566 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1567 data->card = card;
1568 memcpy(&data->qports, qports,
1569 sizeof(struct qeth_sbp_state_change) + extrasize);
1570 queue_work(qeth_wq, &data->worker);
1571}
b4d72c08 1572
9f48b9db
EC		 1573struct qeth_bridge_host_data {
1574 struct work_struct worker;
1575 struct qeth_card *card;
1576 struct qeth_ipacmd_addr_change hostevs;
1577};
1578
1579static void qeth_bridge_host_event_worker(struct work_struct *work)
1580{
1581 struct qeth_bridge_host_data *data =
1582 container_of(work, struct qeth_bridge_host_data, worker);
1583 int i;
1584
1585 if (data->hostevs.lost_event_mask) {
1586 dev_info(&data->card->gdev->dev,
9c23f4da 1587"Address notification from the Bridge Port stopped %s (%s)\n",
9f48b9db
EC		 1588 data->card->dev->name,
1589 (data->hostevs.lost_event_mask == 0x01)
1590 ? "Overflow"
1591 : (data->hostevs.lost_event_mask == 0x02)
1592 ? "Bridge port state change"
1593 : "Unknown reason");
1594 mutex_lock(&data->card->conf_mutex);
1595 data->card->options.sbp.hostnotification = 0;
1596 mutex_unlock(&data->card->conf_mutex);
1597 qeth_bridge_emit_host_event(data->card, anev_abort,
1598 0, NULL, NULL);
1599 } else
1600 for (i = 0; i < data->hostevs.num_entries; i++) {
1601 struct qeth_ipacmd_addr_change_entry *entry =
1602 &data->hostevs.entry[i];
1603 qeth_bridge_emit_host_event(data->card,
1604 anev_reg_unreg,
1605 entry->change_code,
1606 &entry->token, &entry->addr_lnid);
1607 }
1608 kfree(data);
1609}
1610
c044dc21
EC		 1611static void qeth_bridge_host_event(struct qeth_card *card,
1612 struct qeth_ipa_cmd *cmd)
9f48b9db
EC		 1613{
1614 struct qeth_ipacmd_addr_change *hostevs =
1615 &cmd->data.addrchange;
1616 struct qeth_bridge_host_data *data;
1617 int extrasize;
1618
1619 QETH_CARD_TEXT(card, 2, "brhostev");
1620 if (cmd->hdr.return_code != 0x0000) {
1621 if (cmd->hdr.return_code == 0x0010) {
1622 if (hostevs->lost_event_mask == 0x00)
1623 hostevs->lost_event_mask = 0xff;
1624 } else {
1625 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1626 cmd->hdr.return_code);
1627 return;
1628 }
1629 }
1630 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1631 hostevs->num_entries;
1632 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1633 GFP_ATOMIC);
1634 if (!data) {
1635 QETH_CARD_TEXT(card, 2, "BPHalloc");
1636 return;
1637 }
1638 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1639 data->card = card;
1640 memcpy(&data->hostevs, hostevs,
1641 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1642 queue_work(qeth_wq, &data->worker);
1643}
9f48b9db 1644
b4d72c08
EC		 1645/* SETBRIDGEPORT support; sending commands */
1646
1647struct _qeth_sbp_cbctl {
1648 u16 ipa_rc;
1649 u16 cmd_rc;
1650 union {
1651 u32 supported;
1652 struct {
1653 enum qeth_sbp_roles *role;
1654 enum qeth_sbp_states *state;
1655 } qports;
1656 } data;
1657};
1658
1659/**
1660 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1661 * @card: qeth_card structure pointer, for debug messages.
1662 * @cbctl: state structure with hardware return codes.
1663 * @setcmd: IPA command code
1664 *
1665 * Returns negative errno-compatible error indication or 0 on success.
1666 */
1667static int qeth_bridgeport_makerc(struct qeth_card *card,
1668 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1669{
1670 int rc;
9c23f4da 1671 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
b4d72c08 1672
9c23f4da
EC		 1673 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1674 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
b4d72c08 1675 switch (cbctl->cmd_rc) {
2063a5f5 1676 case IPA_RC_SUCCESS:
b4d72c08
EC		 1677 rc = 0;
1678 break;
2063a5f5
KM		 1679 case IPA_RC_L2_UNSUPPORTED_CMD:
1680 case IPA_RC_UNSUPPORTED_COMMAND:
ffb95251 1681 rc = -EOPNOTSUPP;
b4d72c08 1682 break;
2063a5f5
KM		 1683 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1684 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
b4d72c08
EC		 1685 rc = -ENODEV; /* maybe not the best code here? */
1686 dev_err(&card->gdev->dev,
9c23f4da 1687 "The device is not configured as a Bridge Port\n");
b4d72c08 1688 break;
2063a5f5
KM		 1689 case IPA_RC_SBP_OSA_OS_MISMATCH:
1690 case IPA_RC_SBP_IQD_OS_MISMATCH:
1b05cf62
EC		 1691 rc = -EPERM;
1692 dev_err(&card->gdev->dev,
1693 "A Bridge Port is already configured by a different operating system\n");
1694 break;
2063a5f5
KM		 1695 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1696 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
b4d72c08
EC		 1697 switch (setcmd) {
1698 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1699 rc = -EEXIST;
1700 dev_err(&card->gdev->dev,
9c23f4da 1701 "The LAN already has a primary Bridge Port\n");
b4d72c08
EC		 1702 break;
1703 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1704 rc = -EBUSY;
1705 dev_err(&card->gdev->dev,
9c23f4da 1706 "The device is already a primary Bridge Port\n");
b4d72c08
EC		 1707 break;
1708 default:
1709 rc = -EIO;
1710 }
1711 break;
2063a5f5
KM		 1712 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1713 case IPA_RC_SBP_IQD_CURRENT_SECOND:
b4d72c08
EC		 1714 rc = -EBUSY;
1715 dev_err(&card->gdev->dev,
9c23f4da 1716 "The device is already a secondary Bridge Port\n");
b4d72c08 1717 break;
2063a5f5
KM		 1718 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1719 case IPA_RC_SBP_IQD_LIMIT_SECOND:
b4d72c08
EC		 1720 rc = -EEXIST;
1721 dev_err(&card->gdev->dev,
9c23f4da 1722 "The LAN cannot have more secondary Bridge Ports\n");
b4d72c08 1723 break;
2063a5f5
KM		 1724 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1725 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
b4d72c08
EC		 1726 rc = -EBUSY;
1727 dev_err(&card->gdev->dev,
9c23f4da 1728 "The device is already a primary Bridge Port\n");
b4d72c08 1729 break;
2063a5f5
KM		 1730 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1731 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
b4d72c08
EC		 1732 rc = -EACCES;
1733 dev_err(&card->gdev->dev,
9c23f4da 1734 "The device is not authorized to be a Bridge Port\n");
b4d72c08
EC		 1735 break;
1736 default:
1737 rc = -EIO;
1738 }
9c23f4da
EC		 1739 else
1740 switch (cbctl->ipa_rc) {
1741 case IPA_RC_NOTSUPP:
ffb95251 1742 rc = -EOPNOTSUPP;
9c23f4da
EC		 1743 break;
1744 case IPA_RC_UNSUPPORTED_COMMAND:
ffb95251 1745 rc = -EOPNOTSUPP;
9c23f4da
EC		 1746 break;
1747 default:
1748 rc = -EIO;
1749 }
1750
b4d72c08
EC		 1751 if (rc) {
1752 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1753 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1754 }
1755 return rc;
1756}
1757
d65626ad
JW		 1758static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1759 enum qeth_ipa_sbp_cmd sbp_cmd,
1760 unsigned int cmd_length)
9c23f4da 1761{
d65626ad
JW		 1762 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ?
1763 IPA_CMD_SETBRIDGEPORT_IQD :
1764 IPA_CMD_SETBRIDGEPORT_OSA;
1765 struct qeth_cmd_buffer *iob;
1766 struct qeth_ipa_cmd *cmd;
1767
1768 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0);
1769 if (!iob)
1770 return iob;
ff5caa7a 1771 cmd = __ipa_cmd(iob);
d65626ad
JW		 1772 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1773 cmd_length;
1774 cmd->data.sbp.hdr.command_code = sbp_cmd;
1775 cmd->data.sbp.hdr.used_total = 1;
1776 cmd->data.sbp.hdr.seq_no = 1;
1777 return iob;
9c23f4da
EC		 1778}
1779
b4d72c08
EC		 1780static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1781 struct qeth_reply *reply, unsigned long data)
1782{
1783 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1784 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1785 QETH_CARD_TEXT(card, 2, "brqsupcb");
1786 cbctl->ipa_rc = cmd->hdr.return_code;
1787 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1788 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1789 cbctl->data.supported =
1790 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1791 } else {
1792 cbctl->data.supported = 0;
1793 }
1794 return 0;
1795}
1796
1797/**
1798 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1799 * @card: qeth_card structure pointer.
1800 *
1801 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1802 * strucutre: card->options.sbp.supported_funcs.
1803 */
c044dc21 1804static void qeth_bridgeport_query_support(struct qeth_card *card)
b4d72c08
EC		 1805{
1806 struct qeth_cmd_buffer *iob;
b4d72c08
EC		 1807 struct _qeth_sbp_cbctl cbctl;
1808
1809 QETH_CARD_TEXT(card, 2, "brqsuppo");
d65626ad
JW		 1810 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1811 sizeof(struct qeth_sbp_query_cmds_supp));
1aec42bc
TR		 1812 if (!iob)
1813 return;
b4d72c08
EC		 1814 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1815 (void *)&cbctl) ||
1816 qeth_bridgeport_makerc(card, &cbctl,
1817 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1818 /* non-zero makerc signifies failure, and produce messages */
1819 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1820 return;
1821 }
1822 card->options.sbp.supported_funcs = cbctl.data.supported;
1823}
b4d72c08
EC		 1824
1825static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1826 struct qeth_reply *reply, unsigned long data)
1827{
1828 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1829 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1830 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1831
1832 QETH_CARD_TEXT(card, 2, "brqprtcb");
1833 cbctl->ipa_rc = cmd->hdr.return_code;
1834 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1835 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1836 return 0;
1837 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1838 cbctl->cmd_rc = 0xffff;
1839 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1840 return 0;
1841 }
1842 /* first entry contains the state of the local port */
1843 if (qports->num_entries > 0) {
1844 if (cbctl->data.qports.role)
1845 *cbctl->data.qports.role = qports->entry[0].role;
1846 if (cbctl->data.qports.state)
1847 *cbctl->data.qports.state = qports->entry[0].state;
1848 }
1849 return 0;
1850}
1851
1852/**
1853 * qeth_bridgeport_query_ports() - query local bridgeport status.
1854 * @card: qeth_card structure pointer.
1855 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1856 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1857 *
1858 * Returns negative errno-compatible error indication or 0 on success.
1859 *
1860 * 'role' and 'state' are not updated in case of hardware operation failure.
1861 */
1862int qeth_bridgeport_query_ports(struct qeth_card *card,
1863 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1864{
1865 int rc = 0;
1866 struct qeth_cmd_buffer *iob;
b4d72c08
EC		 1867 struct _qeth_sbp_cbctl cbctl = {
1868 .data = {
1869 .qports = {
1870 .role = role,
1871 .state = state,
1872 },
1873 },
1874 };
1875
1876 QETH_CARD_TEXT(card, 2, "brqports");
1877 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1878 return -EOPNOTSUPP;
d65626ad 1879 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1aec42bc
TR		 1880 if (!iob)
1881 return -ENOMEM;
b4d72c08
EC		 1882 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1883 (void *)&cbctl);
c88394e7 1884 if (rc < 0)
b4d72c08 1885 return rc;
c88394e7 1886 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
b4d72c08
EC		 1887}
1888EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1889
1890static int qeth_bridgeport_set_cb(struct qeth_card *card,
1891 struct qeth_reply *reply, unsigned long data)
1892{
1893 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1894 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1895 QETH_CARD_TEXT(card, 2, "brsetrcb");
1896 cbctl->ipa_rc = cmd->hdr.return_code;
1897 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1898 return 0;
1899}
1900
1901/**
1902 * qeth_bridgeport_setrole() - Assign primary role to the port.
1903 * @card: qeth_card structure pointer.
1904 * @role: Role to assign.
1905 *
1906 * Returns negative errno-compatible error indication or 0 on success.
1907 */
1908int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1909{
1910 int rc = 0;
1911 int cmdlength;
1912 struct qeth_cmd_buffer *iob;
b4d72c08
EC		 1913 struct _qeth_sbp_cbctl cbctl;
1914 enum qeth_ipa_sbp_cmd setcmd;
1915
1916 QETH_CARD_TEXT(card, 2, "brsetrol");
1917 switch (role) {
1918 case QETH_SBP_ROLE_NONE:
1919 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
d65626ad 1920 cmdlength = sizeof(struct qeth_sbp_reset_role);
b4d72c08
EC		 1921 break;
1922 case QETH_SBP_ROLE_PRIMARY:
1923 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
d65626ad 1924 cmdlength = sizeof(struct qeth_sbp_set_primary);
b4d72c08
EC		 1925 break;
1926 case QETH_SBP_ROLE_SECONDARY:
1927 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
d65626ad 1928 cmdlength = sizeof(struct qeth_sbp_set_secondary);
b4d72c08
EC		 1929 break;
1930 default:
1931 return -EINVAL;
1932 }
1933 if (!(card->options.sbp.supported_funcs & setcmd))
1934 return -EOPNOTSUPP;
d65626ad 1935 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1aec42bc
TR		 1936 if (!iob)
1937 return -ENOMEM;
b4d72c08
EC		 1938 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1939 (void *)&cbctl);
c88394e7 1940 if (rc < 0)
b4d72c08 1941 return rc;
c88394e7 1942 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
b4d72c08
EC		 1943}
1944
9f48b9db
EC		 1945/**
1946 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1947 * @card: qeth_card structure pointer, for debug messages.
1948 *
1949 * Returns negative errno-compatible error indication or 0 on success.
1950 */
1951static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1952{
1953 int rc;
1954
1955 if (pnso_rc == 0)
1956 switch (response) {
1957 case 0x0001:
1958 rc = 0;
1959 break;
1960 case 0x0004:
1961 case 0x0100:
1962 case 0x0106:
ffb95251 1963 rc = -EOPNOTSUPP;
9f48b9db
EC		 1964 dev_err(&card->gdev->dev,
1965 "Setting address notification failed\n");
1966 break;
1967 case 0x0107:
1968 rc = -EAGAIN;
1969 break;
1970 default:
1971 rc = -EIO;
1972 }
1973 else
1974 rc = -EIO;
1975
1976 if (rc) {
1977 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1978 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1979 }
1980 return rc;
1981}
1982
1983static void qeth_bridgeport_an_set_cb(void *priv,
1984 enum qdio_brinfo_entry_type type, void *entry)
1985{
1986 struct qeth_card *card = (struct qeth_card *)priv;
1987 struct qdio_brinfo_entry_l2 *l2entry;
1988 u8 code;
1989
1990 if (type != l2_addr_lnid) {
1991 WARN_ON_ONCE(1);
1992 return;
1993 }
1994
1995 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1996 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1997 if (l2entry->addr_lnid.lnid)
1998 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1999 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2000 (struct net_if_token *)&l2entry->nit,
2001 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2002}
2003
2004/**
2005 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2006 * @card: qeth_card structure pointer.
2007 * @enable: 0 - disable, non-zero - enable notifications
2008 *
2009 * Returns negative errno-compatible error indication or 0 on success.
2010 *
2011 * On enable, emits a series of address notifications udev events for all
2012 * currently registered hosts.
2013 */
2014int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2015{
2016 int rc;
2017 u16 response;
2018 struct ccw_device *ddev;
2019 struct subchannel_id schid;
2020
2021 if (!card)
2022 return -EINVAL;
2023 if (!card->options.sbp.supported_funcs)
2024 return -EOPNOTSUPP;
2025 ddev = CARD_DDEV(card);
2026 ccw_device_get_schid(ddev, &schid);
2027
2028 if (enable) {
2029 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2030 rc = qdio_pnso_brinfo(schid, 1, &response,
2031 qeth_bridgeport_an_set_cb, card);
2032 } else
2033 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2034 return qeth_anset_makerc(card, rc, response);
2035}
2036EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2037
caa1f0b1
HW		 2038static bool qeth_bridgeport_is_in_use(struct qeth_card *card)
2039{
2040 return (card->options.sbp.role || card->options.sbp.reflect_promisc ||
2041 card->options.sbp.hostnotification);
2042}
2043
a45b3faf
HW		 2044/* VNIC Characteristics support */
2045
2046/* handle VNICC IPA command return codes; convert to error codes */
2047static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc)
2048{
2049 int rc;
2050
2051 switch (ipa_rc) {
2052 case IPA_RC_SUCCESS:
2053 return ipa_rc;
2054 case IPA_RC_L2_UNSUPPORTED_CMD:
2055 case IPA_RC_NOTSUPP:
2056 rc = -EOPNOTSUPP;
2057 break;
2058 case IPA_RC_VNICC_OOSEQ:
2059 rc = -EALREADY;
2060 break;
2061 case IPA_RC_VNICC_VNICBP:
2062 rc = -EBUSY;
2063 break;
2064 case IPA_RC_L2_ADDR_TABLE_FULL:
2065 rc = -ENOSPC;
2066 break;
2067 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
2068 rc = -EACCES;
2069 break;
2070 default:
2071 rc = -EIO;
2072 }
2073
2074 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
2075 return rc;
2076}
2077
2078/* generic VNICC request call back control */
2079struct _qeth_l2_vnicc_request_cbctl {
2080 u32 sub_cmd;
caa1f0b1
HW		 2081 struct {
2082 u32 vnic_char;
349d13d5 2083 u32 timeout;
caa1f0b1
HW		 2084 } param;
2085 struct {
349d13d5
HW		 2086 union{
2087 u32 *sup_cmds;
2088 u32 *timeout;
2089 };
caa1f0b1 2090 } result;
a45b3faf
HW		 2091};
2092
2093/* generic VNICC request call back */
2094static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
2095 struct qeth_reply *reply,
2096 unsigned long data)
2097{
caa1f0b1
HW		 2098 struct _qeth_l2_vnicc_request_cbctl *cbctl =
2099 (struct _qeth_l2_vnicc_request_cbctl *) reply->param;
a45b3faf
HW		 2100 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2101 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
2102
2103 QETH_CARD_TEXT(card, 2, "vniccrcb");
2104 if (cmd->hdr.return_code)
2105 return 0;
2106 /* return results to caller */
2107 card->options.vnicc.sup_chars = rep->hdr.sup;
2108 card->options.vnicc.cur_chars = rep->hdr.cur;
2109
caa1f0b1
HW		 2110 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS)
2111 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds;
2112
349d13d5
HW		 2113 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT)
2114 *cbctl->result.timeout = rep->getset_timeout.timeout;
2115
a45b3faf
HW		 2116 return 0;
2117}
2118
2119/* generic VNICC request */
2120static int qeth_l2_vnicc_request(struct qeth_card *card,
2121 struct _qeth_l2_vnicc_request_cbctl *cbctl)
2122{
2123 struct qeth_ipacmd_vnicc *req;
2124 struct qeth_cmd_buffer *iob;
2125 struct qeth_ipa_cmd *cmd;
2126 int rc;
2127
2128 QETH_CARD_TEXT(card, 2, "vniccreq");
2129
2130 /* get new buffer for request */
2131 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0);
2132 if (!iob)
2133 return -ENOMEM;
2134
2135 /* create header for request */
ff5caa7a 2136 cmd = __ipa_cmd(iob);
a45b3faf
HW		 2137 req = &cmd->data.vnicc;
2138
2139 /* create sub command header for request */
2140 req->sub_hdr.data_length = sizeof(req->sub_hdr);
2141 req->sub_hdr.sub_command = cbctl->sub_cmd;
2142
2143 /* create sub command specific request fields */
2144 switch (cbctl->sub_cmd) {
2145 case IPA_VNICC_QUERY_CHARS:
2146 break;
caa1f0b1
HW		 2147 case IPA_VNICC_QUERY_CMDS:
2148 req->sub_hdr.data_length += sizeof(req->query_cmds);
2149 req->query_cmds.vnic_char = cbctl->param.vnic_char;
2150 break;
2151 case IPA_VNICC_ENABLE:
2152 case IPA_VNICC_DISABLE:
2153 req->sub_hdr.data_length += sizeof(req->set_char);
2154 req->set_char.vnic_char = cbctl->param.vnic_char;
2155 break;
349d13d5
HW		 2156 case IPA_VNICC_SET_TIMEOUT:
2157 req->getset_timeout.timeout = cbctl->param.timeout;
2158 /* fallthrough */
2159 case IPA_VNICC_GET_TIMEOUT:
2160 req->sub_hdr.data_length += sizeof(req->getset_timeout);
2161 req->getset_timeout.vnic_char = cbctl->param.vnic_char;
2162 break;
a45b3faf
HW		 2163 default:
2164 qeth_release_buffer(iob->channel, iob);
2165 return -EOPNOTSUPP;
2166 }
2167
2168 /* send request */
2169 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb,
2170 (void *) cbctl);
2171
2172 return qeth_l2_vnicc_makerc(card, rc);
2173}
2174
2175/* VNICC query VNIC characteristics request */
2176static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
2177{
2178 struct _qeth_l2_vnicc_request_cbctl cbctl;
2179
2180 /* prepare callback control */
2181 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS;
2182
2183 QETH_CARD_TEXT(card, 2, "vniccqch");
2184 return qeth_l2_vnicc_request(card, &cbctl);
2185}
2186
caa1f0b1
HW		 2187/* VNICC query sub commands request */
2188static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
2189 u32 *sup_cmds)
2190{
2191 struct _qeth_l2_vnicc_request_cbctl cbctl;
2192
2193 /* prepare callback control */
2194 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS;
2195 cbctl.param.vnic_char = vnic_char;
2196 cbctl.result.sup_cmds = sup_cmds;
2197
2198 QETH_CARD_TEXT(card, 2, "vniccqcm");
2199 return qeth_l2_vnicc_request(card, &cbctl);
2200}
2201
2202/* VNICC enable/disable characteristic request */
2203static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
2204 u32 cmd)
2205{
2206 struct _qeth_l2_vnicc_request_cbctl cbctl;
2207
2208 /* prepare callback control */
2209 cbctl.sub_cmd = cmd;
2210 cbctl.param.vnic_char = vnic_char;
2211
2212 QETH_CARD_TEXT(card, 2, "vniccedc");
2213 return qeth_l2_vnicc_request(card, &cbctl);
2214}
2215
349d13d5
HW		 2216/* VNICC get/set timeout for characteristic request */
2217static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
2218 u32 cmd, u32 *timeout)
2219{
2220 struct _qeth_l2_vnicc_request_cbctl cbctl;
2221
2222 /* prepare callback control */
2223 cbctl.sub_cmd = cmd;
2224 cbctl.param.vnic_char = vnicc;
2225 if (cmd == IPA_VNICC_SET_TIMEOUT)
2226 cbctl.param.timeout = *timeout;
2227 if (cmd == IPA_VNICC_GET_TIMEOUT)
2228 cbctl.result.timeout = timeout;
2229
2230 QETH_CARD_TEXT(card, 2, "vniccgst");
2231 return qeth_l2_vnicc_request(card, &cbctl);
2232}
2233
caa1f0b1
HW		 2234/* set current VNICC flag state; called from sysfs store function */
2235int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
2236{
2237 int rc = 0;
2238 u32 cmd;
2239
2240 QETH_CARD_TEXT(card, 2, "vniccsch");
2241
2242 /* do not change anything if BridgePort is enabled */
2243 if (qeth_bridgeport_is_in_use(card))
2244 return -EBUSY;
2245
2246 /* check if characteristic and enable/disable are supported */
2247 if (!(card->options.vnicc.sup_chars & vnicc) ||
2248 !(card->options.vnicc.set_char_sup & vnicc))
2249 return -EOPNOTSUPP;
2250
2251 /* set enable/disable command and store wanted characteristic */
2252 if (state) {
2253 cmd = IPA_VNICC_ENABLE;
2254 card->options.vnicc.wanted_chars |= vnicc;
2255 } else {
2256 cmd = IPA_VNICC_DISABLE;
2257 card->options.vnicc.wanted_chars &= ~vnicc;
2258 }
2259
2260 /* do we need to do anything? */
2261 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
2262 return rc;
2263
2264 /* if card is not ready, simply stop here */
2265 if (!qeth_card_hw_is_reachable(card)) {
2266 if (state)
2267 card->options.vnicc.cur_chars |= vnicc;
2268 else
2269 card->options.vnicc.cur_chars &= ~vnicc;
2270 return rc;
2271 }
2272
2273 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
2274 if (rc)
2275 card->options.vnicc.wanted_chars =
2276 card->options.vnicc.cur_chars;
349d13d5
HW		 2277 else {
2278 /* successful online VNICC change; handle special cases */
2279 if (state && vnicc == QETH_VNICC_RX_BCAST)
2280 card->options.vnicc.rx_bcast_enabled = true;
2281 if (!state && vnicc == QETH_VNICC_LEARNING)
2282 qeth_l2_vnicc_recover_timeout(card, vnicc,
2283 &card->options.vnicc.learning_timeout);
2284 }
caa1f0b1
HW		 2285
2286 return rc;
2287}
2288
2289/* get current VNICC flag state; called from sysfs show function */
2290int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
2291{
2292 int rc = 0;
2293
2294 QETH_CARD_TEXT(card, 2, "vniccgch");
2295
2296 /* do not get anything if BridgePort is enabled */
2297 if (qeth_bridgeport_is_in_use(card))
2298 return -EBUSY;
2299
2300 /* check if characteristic is supported */
2301 if (!(card->options.vnicc.sup_chars & vnicc))
2302 return -EOPNOTSUPP;
2303
2304 /* if card is ready, query current VNICC state */
2305 if (qeth_card_hw_is_reachable(card))
2306 rc = qeth_l2_vnicc_query_chars(card);
2307
2308 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
2309 return rc;
2310}
2311
349d13d5
HW		 2312/* set VNICC timeout; called from sysfs store function. Currently, only learning
2313 * supports timeout
2314 */
2315int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
2316{
2317 int rc = 0;
2318
2319 QETH_CARD_TEXT(card, 2, "vniccsto");
2320
2321 /* do not change anything if BridgePort is enabled */
2322 if (qeth_bridgeport_is_in_use(card))
2323 return -EBUSY;
2324
2325 /* check if characteristic and set_timeout are supported */
2326 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2327 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2328 return -EOPNOTSUPP;
2329
2330 /* do we need to do anything? */
2331 if (card->options.vnicc.learning_timeout == timeout)
2332 return rc;
2333
2334 /* if card is not ready, simply store the value internally and return */
2335 if (!qeth_card_hw_is_reachable(card)) {
2336 card->options.vnicc.learning_timeout = timeout;
2337 return rc;
2338 }
2339
2340 /* send timeout value to card; if successful, store value internally */
2341 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2342 IPA_VNICC_SET_TIMEOUT, &timeout);
2343 if (!rc)
2344 card->options.vnicc.learning_timeout = timeout;
2345
2346 return rc;
2347}
2348
2349/* get current VNICC timeout; called from sysfs show function. Currently, only
2350 * learning supports timeout
2351 */
2352int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
2353{
2354 int rc = 0;
2355
2356 QETH_CARD_TEXT(card, 2, "vniccgto");
2357
2358 /* do not get anything if BridgePort is enabled */
2359 if (qeth_bridgeport_is_in_use(card))
2360 return -EBUSY;
2361
2362 /* check if characteristic and get_timeout are supported */
2363 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2364 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2365 return -EOPNOTSUPP;
2366 /* if card is ready, get timeout. Otherwise, just return stored value */
2367 *timeout = card->options.vnicc.learning_timeout;
2368 if (qeth_card_hw_is_reachable(card))
2369 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2370 IPA_VNICC_GET_TIMEOUT,
2371 timeout);
2372
2373 return rc;
2374}
2375
caa1f0b1
HW		 2376/* check if VNICC is currently enabled */
2377bool qeth_l2_vnicc_is_in_use(struct qeth_card *card)
2378{
2379 /* if everything is turned off, VNICC is not active */
2380 if (!card->options.vnicc.cur_chars)
2381 return false;
2382 /* default values are only OK if rx_bcast was not enabled by user
2383 * or the card is offline.
2384 */
2385 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
2386 if (!card->options.vnicc.rx_bcast_enabled ||
2387 !qeth_card_hw_is_reachable(card))
2388 return false;
2389 }
2390 return true;
2391}
2392
349d13d5
HW		 2393/* recover user timeout setting */
2394static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
2395 u32 *timeout)
2396{
2397 if (card->options.vnicc.sup_chars & vnicc &&
2398 card->options.vnicc.getset_timeout_sup & vnicc &&
2399 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
2400 timeout))
2401 return false;
2402 *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2403 return true;
2404}
2405
caa1f0b1
HW		 2406/* recover user characteristic setting */
2407static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2408 bool enable)
2409{
2410 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2411
2412 if (card->options.vnicc.sup_chars & vnicc &&
2413 card->options.vnicc.set_char_sup & vnicc &&
2414 !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2415 return false;
2416 card->options.vnicc.wanted_chars &= ~vnicc;
2417 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2418 return true;
2419}
2420
a45b3faf
HW		 2421/* (re-)initialize VNICC */
2422static void qeth_l2_vnicc_init(struct qeth_card *card)
2423{
349d13d5 2424 u32 *timeout = &card->options.vnicc.learning_timeout;
caa1f0b1
HW		 2425 unsigned int chars_len, i;
2426 unsigned long chars_tmp;
2427 u32 sup_cmds, vnicc;
2428 bool enable, error;
2429
a45b3faf 2430 QETH_CARD_TEXT(card, 2, "vniccini");
caa1f0b1
HW		 2431 /* reset rx_bcast */
2432 card->options.vnicc.rx_bcast_enabled = 0;
a45b3faf
HW		 2433 /* initial query and storage of VNIC characteristics */
2434 if (qeth_l2_vnicc_query_chars(card)) {
349d13d5
HW		 2435 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2436 *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
caa1f0b1
HW		 2437 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2438 /* fail quietly if user didn't change the default config */
a45b3faf
HW		 2439 card->options.vnicc.sup_chars = 0;
2440 card->options.vnicc.cur_chars = 0;
caa1f0b1
HW		 2441 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2442 return;
a45b3faf 2443 }
caa1f0b1
HW		 2444 /* get supported commands for each supported characteristic */
2445 chars_tmp = card->options.vnicc.sup_chars;
2446 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2447 for_each_set_bit(i, &chars_tmp, chars_len) {
2448 vnicc = BIT(i);
2449 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds);
349d13d5
HW		 2450 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) ||
2451 !(sup_cmds & IPA_VNICC_GET_TIMEOUT))
2452 card->options.vnicc.getset_timeout_sup &= ~vnicc;
caa1f0b1
HW		 2453 if (!(sup_cmds & IPA_VNICC_ENABLE) ||
2454 !(sup_cmds & IPA_VNICC_DISABLE))
2455 card->options.vnicc.set_char_sup &= ~vnicc;
2456 }
2457 /* enforce assumed default values and recover settings, if changed */
349d13d5
HW		 2458 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2459 timeout);
caa1f0b1
HW		 2460 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT;
2461 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE;
2462 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2463 for_each_set_bit(i, &chars_tmp, chars_len) {
2464 vnicc = BIT(i);
2465 enable = card->options.vnicc.wanted_chars & vnicc;
2466 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2467 }
2468 if (error)
2469 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2470}
2471
2472/* configure default values of VNIC characteristics */
2473static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2474{
2475 /* characteristics values */
2476 card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2477 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
349d13d5 2478 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
caa1f0b1
HW		 2479 /* supported commands */
2480 card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
349d13d5 2481 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
caa1f0b1
HW		 2482 /* settings wanted by users */
2483 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
a45b3faf
HW		 2484}
2485
4a71df50
FB		 2486module_init(qeth_l2_init);
2487module_exit(qeth_l2_exit);
2488MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2489MODULE_DESCRIPTION("qeth layer 2 discipline");
2490MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)