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Merge tag 'pci-v6.16-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
[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>
fa115adf 20#include <linux/if_bridge.h>
ccffad25 21#include <linux/list.h>
fe5c8028
LD		 22#include <linux/hash.h>
23#include <linux/hashtable.h>
10a6cfc0 24#include <net/switchdev.h>
52109a06 25#include <asm/machine.h>
a0138f59 26#include <asm/chsc.h>
fa115adf 27#include <asm/css_chars.h>
ec61bd2f 28#include <asm/setup.h>
4a71df50 29#include "qeth_core.h"
b4d72c08 30#include "qeth_l2.h"
4a71df50 31
742d4d40 32static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode)
4a71df50 33{
efbbc1d5 34 int rc;
4a71df50 35
efbbc1d5 36 if (retcode)
1aec42bc 37 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
efbbc1d5
EC		 38 switch (retcode) {
39 case IPA_RC_SUCCESS:
40 rc = 0;
41 break;
42 case IPA_RC_L2_UNSUPPORTED_CMD:
ffb95251 43 rc = -EOPNOTSUPP;
efbbc1d5
EC		 44 break;
45 case IPA_RC_L2_ADDR_TABLE_FULL:
46 rc = -ENOSPC;
47 break;
48 case IPA_RC_L2_DUP_MAC:
49 case IPA_RC_L2_DUP_LAYER3_MAC:
bdb0cc12 50 rc = -EADDRINUSE;
efbbc1d5
EC		 51 break;
52 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
53 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
bdb0cc12 54 rc = -EADDRNOTAVAIL;
efbbc1d5
EC		 55 break;
56 case IPA_RC_L2_MAC_NOT_FOUND:
57 rc = -ENOENT;
58 break;
59 default:
60 rc = -EIO;
61 break;
4a71df50 62 }
efbbc1d5 63 return rc;
4a71df50
FB		 64}
65
742d4d40
JW		 66static int qeth_l2_send_setdelmac_cb(struct qeth_card *card,
67 struct qeth_reply *reply,
68 unsigned long data)
69{
70 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
71
72 return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code);
73}
74
978bb0ae 75static int qeth_l2_send_setdelmac(struct qeth_card *card, const __u8 *mac,
ac988d78
JW		 76 enum qeth_ipa_cmds ipacmd)
77{
78 struct qeth_ipa_cmd *cmd;
79 struct qeth_cmd_buffer *iob;
80
81 QETH_CARD_TEXT(card, 2, "L2sdmac");
a59d121d
JW		 82 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
83 IPA_DATA_SIZEOF(setdelmac));
ac988d78
JW		 84 if (!iob)
85 return -ENOMEM;
ff5caa7a 86 cmd = __ipa_cmd(iob);
99f0b85d
JW		 87 cmd->data.setdelmac.mac_length = ETH_ALEN;
88 ether_addr_copy(cmd->data.setdelmac.mac, mac);
742d4d40 89 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelmac_cb, NULL);
ac988d78
JW		 90}
91
978bb0ae 92static int qeth_l2_send_setmac(struct qeth_card *card, const __u8 *mac)
ac988d78
JW		 93{
94 int rc;
95
96 QETH_CARD_TEXT(card, 2, "L2Setmac");
97 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
98 if (rc == 0) {
ac988d78 99 dev_info(&card->gdev->dev,
654e3d48 100 "MAC address %pM successfully registered\n", mac);
ac988d78 101 } else {
ac988d78 102 switch (rc) {
bdb0cc12 103 case -EADDRINUSE:
ac988d78
JW		 104 dev_warn(&card->gdev->dev,
105 "MAC address %pM already exists\n", mac);
106 break;
bdb0cc12 107 case -EADDRNOTAVAIL:
ac988d78
JW		 108 dev_warn(&card->gdev->dev,
109 "MAC address %pM is not authorized\n", mac);
110 break;
111 }
112 }
113 return rc;
114}
115
8174aa8a 116static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
4a71df50 117{
9d0a58fb 118 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
8174aa8a 119 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
efbbc1d5 120 int rc;
4a71df50 121
8174aa8a
JW		 122 QETH_CARD_TEXT(card, 2, "L2Wmac");
123 rc = qeth_l2_send_setdelmac(card, mac, cmd);
bdb0cc12 124 if (rc == -EADDRINUSE)
0969becb
JW		 125 QETH_DBF_MESSAGE(2, "MAC address %012llx is already registered on device %x\n",
126 ether_addr_to_u64(mac), CARD_DEVID(card));
efbbc1d5 127 else if (rc)
0969becb
JW		 128 QETH_DBF_MESSAGE(2, "Failed to register MAC address %012llx on device %x: %d\n",
129 ether_addr_to_u64(mac), CARD_DEVID(card), rc);
efbbc1d5 130 return rc;
4a71df50
FB		 131}
132
8174aa8a 133static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
4a71df50 134{
9d0a58fb 135 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
8174aa8a 136 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
efbbc1d5
EC		 137 int rc;
138
8174aa8a
JW		 139 QETH_CARD_TEXT(card, 2, "L2Rmac");
140 rc = qeth_l2_send_setdelmac(card, mac, cmd);
efbbc1d5 141 if (rc)
0969becb
JW		 142 QETH_DBF_MESSAGE(2, "Failed to delete MAC address %012llx on device %x: %d\n",
143 ether_addr_to_u64(mac), CARD_DEVID(card), rc);
efbbc1d5 144 return rc;
4a71df50
FB		 145}
146
d0c74825 147static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card)
4a71df50 148{
fe5c8028
LD		 149 struct qeth_mac *mac;
150 struct hlist_node *tmp;
151 int i;
4a71df50 152
0973292f 153 hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) {
fe5c8028
LD		 154 hash_del(&mac->hnode);
155 kfree(mac);
4a71df50 156 }
4a71df50
FB		 157}
158
b0abc4f5
JW		 159static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue,
160 struct qeth_hdr *hdr, struct sk_buff *skb,
17f3a8b5 161 __be16 proto, unsigned int data_len)
4a71df50 162{
eca1d5c2 163 int cast_type = qeth_get_ether_cast_type(skb);
0aef8392 164 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
4a71df50 165
ae79fe03 166 hdr->hdr.l2.pkt_length = data_len;
4a71df50 167
0aef8392
JW		 168 if (skb_is_gso(skb)) {
169 hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO;
170 } else {
171 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
eeac0e20 172 if (skb->ip_summed == CHECKSUM_PARTIAL)
17f3a8b5 173 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], proto);
fc69660b
JW		 174 }
175
4a71df50
FB		 176 /* set byte byte 3 to casting flags */
177 if (cast_type == RTN_MULTICAST)
178 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
179 else if (cast_type == RTN_BROADCAST)
180 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
181 else
ce73e10e 182 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
4a71df50 183
4a71df50
FB		 184 /* VSWITCH relies on the VLAN
185 * information to be present in
186 * the QDIO header */
378ac80d 187 if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
4a71df50
FB		 188 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
189 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
190 }
191}
192
742d4d40 193static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode)
2aa48671
JW		 194{
195 if (retcode)
196 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
197
198 switch (retcode) {
199 case IPA_RC_SUCCESS:
200 return 0;
201 case IPA_RC_L2_INVALID_VLAN_ID:
202 return -EINVAL;
203 case IPA_RC_L2_DUP_VLAN_ID:
204 return -EEXIST;
205 case IPA_RC_L2_VLAN_ID_NOT_FOUND:
206 return -ENOENT;
207 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
208 return -EPERM;
2aa48671
JW		 209 default:
210 return -EIO;
211 }
212}
213
4a71df50 214static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
2aa48671
JW		 215 struct qeth_reply *reply,
216 unsigned long data)
4a71df50 217{
2aa48671 218 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50 219
847a50fd 220 QETH_CARD_TEXT(card, 2, "L2sdvcb");
4a71df50 221 if (cmd->hdr.return_code) {
e19e5be8 222 QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n",
2aa48671 223 cmd->data.setdelvlan.vlan_id,
e19e5be8 224 CARD_DEVID(card), cmd->hdr.return_code);
847a50fd 225 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
4a71df50 226 }
742d4d40 227 return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code);
4a71df50
FB		 228}
229
230static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
2aa48671 231 enum qeth_ipa_cmds ipacmd)
4a71df50
FB		 232{
233 struct qeth_ipa_cmd *cmd;
234 struct qeth_cmd_buffer *iob;
235
847a50fd 236 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
a59d121d
JW		 237 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
238 IPA_DATA_SIZEOF(setdelvlan));
1aec42bc
TR		 239 if (!iob)
240 return -ENOMEM;
ff5caa7a 241 cmd = __ipa_cmd(iob);
4a71df50 242 cmd->data.setdelvlan.vlan_id = i;
742d4d40 243 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelvlan_cb, NULL);
4a71df50
FB		 244}
245
80d5c368
PM		 246static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
247 __be16 proto, u16 vid)
4a71df50 248{
509e2562 249 struct qeth_card *card = dev->ml_priv;
4a71df50 250
847a50fd 251 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
10651db7 252 if (!vid)
8e586137 253 return 0;
e6e771b3 254
5fc692a7 255 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
4a71df50
FB		 256}
257
80d5c368
PM		 258static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
259 __be16 proto, u16 vid)
4a71df50 260{
509e2562 261 struct qeth_card *card = dev->ml_priv;
4a71df50 262
847a50fd 263 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
5fc692a7
JW		 264 if (!vid)
265 return 0;
e6e771b3 266
5fc692a7 267 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
4a71df50
FB		 268}
269
9d6a569a
JW		 270static void qeth_l2_set_pnso_mode(struct qeth_card *card,
271 enum qeth_pnso_mode mode)
272{
273 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
274 WRITE_ONCE(card->info.pnso_mode, mode);
275 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
276
277 if (mode == QETH_PNSO_NONE)
278 drain_workqueue(card->event_wq);
279}
280
817741a8
AW		 281static void qeth_l2_dev2br_fdb_flush(struct qeth_card *card)
282{
c35b57ce 283 struct switchdev_notifier_fdb_info info = {};
817741a8
AW		 284
285 QETH_CARD_TEXT(card, 2, "fdbflush");
286
287 info.addr = NULL;
288 /* flush all VLANs: */
289 info.vid = 0;
290 info.added_by_user = false;
291 info.offloaded = true;
292
293 call_switchdev_notifiers(SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
294 card->dev, &info.info, NULL);
295}
296
4a71df50
FB		 297static int qeth_l2_request_initial_mac(struct qeth_card *card)
298{
299 int rc = 0;
4a71df50 300
57a688aa 301 QETH_CARD_TEXT(card, 2, "l2reqmac");
4a71df50 302
52109a06 303 if (machine_is_vm()) {
ec61bd2f
JW		 304 rc = qeth_vm_request_mac(card);
305 if (!rc)
306 goto out;
e19e5be8
JW		 307 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n",
308 CARD_DEVID(card), rc);
57a688aa 309 QETH_CARD_TEXT_(card, 2, "err%04x", rc);
ec61bd2f
JW		 310 /* fall back to alternative mechanism: */
311 }
312
a8c7629c
JW		 313 rc = qeth_setadpparms_change_macaddr(card);
314 if (!rc)
315 goto out;
316 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n",
317 CARD_DEVID(card), rc);
318 QETH_CARD_TEXT_(card, 2, "1err%04x", rc);
21b1702a 319
a8c7629c
JW		 320 /* Fall back once more, but some devices don't support a custom MAC
321 * address:
322 */
379ac99e 323 if (IS_OSM(card) || IS_OSX(card))
21b1702a
JW		 324 return (rc) ? rc : -EADDRNOTAVAIL;
325 eth_hw_addr_random(card->dev);
326
ec61bd2f 327out:
57a688aa 328 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len);
4a71df50
FB		 329 return 0;
330}
331
654e3d48
JW		 332static void qeth_l2_register_dev_addr(struct qeth_card *card)
333{
334 if (!is_valid_ether_addr(card->dev->dev_addr))
335 qeth_l2_request_initial_mac(card);
336
a8c7629c 337 if (!qeth_l2_send_setmac(card, card->dev->dev_addr))
9de15117
JW		 338 card->info.dev_addr_is_registered = 1;
339 else
340 card->info.dev_addr_is_registered = 0;
654e3d48
JW		 341}
342
e22355ea
JW		 343static int qeth_l2_validate_addr(struct net_device *dev)
344{
345 struct qeth_card *card = dev->ml_priv;
346
9de15117 347 if (card->info.dev_addr_is_registered)
e22355ea
JW		 348 return eth_validate_addr(dev);
349
350 QETH_CARD_TEXT(card, 4, "nomacadr");
351 return -EPERM;
352}
353
4a71df50
FB		 354static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
355{
356 struct sockaddr *addr = p;
509e2562 357 struct qeth_card *card = dev->ml_priv;
bcacfcbc 358 u8 old_addr[ETH_ALEN];
4a71df50
FB		 359 int rc = 0;
360
847a50fd 361 QETH_CARD_TEXT(card, 3, "setmac");
4a71df50 362
8024cc9e 363 if (IS_OSM(card) || IS_OSX(card)) {
847a50fd 364 QETH_CARD_TEXT(card, 3, "setmcTYP");
4a71df50
FB		 365 return -EOPNOTSUPP;
366 }
99f0b85d 367 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN);
bcacfcbc
JW		 368 if (!is_valid_ether_addr(addr->sa_data))
369 return -EADDRNOTAVAIL;
370
bcacfcbc
JW		 371 /* don't register the same address twice */
372 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) &&
9de15117 373 card->info.dev_addr_is_registered)
e6e771b3 374 return 0;
bcacfcbc
JW		 375
376 /* add the new address, switch over, drop the old */
377 rc = qeth_l2_send_setmac(card, addr->sa_data);
378 if (rc)
e6e771b3 379 return rc;
bcacfcbc 380 ether_addr_copy(old_addr, dev->dev_addr);
978bb0ae 381 eth_hw_addr_set(dev, addr->sa_data);
bcacfcbc 382
9de15117 383 if (card->info.dev_addr_is_registered)
bcacfcbc 384 qeth_l2_remove_mac(card, old_addr);
9de15117 385 card->info.dev_addr_is_registered = 1;
e6e771b3 386 return 0;
4a71df50
FB		 387}
388
59b757a9 389static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable)
0db587b0 390{
0db587b0
EC		 391 int role;
392 int rc;
393
394 QETH_CARD_TEXT(card, 3, "pmisc2br");
395
59b757a9 396 if (enable) {
0db587b0
EC		 397 if (card->options.sbp.reflect_promisc_primary)
398 role = QETH_SBP_ROLE_PRIMARY;
399 else
400 role = QETH_SBP_ROLE_SECONDARY;
401 } else
402 role = QETH_SBP_ROLE_NONE;
403
404 rc = qeth_bridgeport_setrole(card, role);
59b757a9 405 QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc);
0db587b0
EC		 406 if (!rc) {
407 card->options.sbp.role = role;
59b757a9 408 card->info.promisc_mode = enable;
0db587b0 409 }
59b757a9
JW		 410}
411
412static void qeth_l2_set_promisc_mode(struct qeth_card *card)
413{
414 bool enable = card->dev->flags & IFF_PROMISC;
fe5c8028 415
59b757a9
JW		 416 if (card->info.promisc_mode == enable)
417 return;
418
c8183f54 419 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) {
59b757a9 420 qeth_setadp_promisc_mode(card, enable);
c8183f54
JW		 421 } else {
422 mutex_lock(&card->sbp_lock);
423 if (card->options.sbp.reflect_promisc)
424 qeth_l2_promisc_to_bridge(card, enable);
425 mutex_unlock(&card->sbp_lock);
426 }
fe5c8028 427}
59b757a9 428
fe5c8028
LD		 429/* New MAC address is added to the hash table and marked to be written on card
430 * only if there is not in the hash table storage already
431 *
432*/
4641b027 433static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha)
fe5c8028 434{
cef6ff22 435 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
fe5c8028
LD		 436 struct qeth_mac *mac;
437
0973292f 438 hash_for_each_possible(card->rx_mode_addrs, mac, hnode, mac_hash) {
99f0b85d 439 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) {
5f78e29c 440 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
fe5c8028
LD		 441 return;
442 }
443 }
444
445 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
fe5c8028
LD		 446 if (!mac)
447 return;
448
99f0b85d 449 ether_addr_copy(mac->mac_addr, ha->addr);
5f78e29c 450 mac->disp_flag = QETH_DISP_ADDR_ADD;
fe5c8028 451
0973292f 452 hash_add(card->rx_mode_addrs, &mac->hnode, mac_hash);
0db587b0
EC		 453}
454
d0c74825 455static void qeth_l2_rx_mode_work(struct work_struct *work)
4a71df50 456{
d0c74825
JW		 457 struct qeth_card *card = container_of(work, struct qeth_card,
458 rx_mode_work);
459 struct net_device *dev = card->dev;
ccffad25 460 struct netdev_hw_addr *ha;
fe5c8028
LD		 461 struct qeth_mac *mac;
462 struct hlist_node *tmp;
463 int i;
464 int rc;
4a71df50 465
847a50fd 466 QETH_CARD_TEXT(card, 3, "setmulti");
fe5c8028 467
d0c74825 468 netif_addr_lock_bh(dev);
22bedad3 469 netdev_for_each_mc_addr(ha, dev)
4641b027 470 qeth_l2_add_mac(card, ha);
32e7bfc4 471 netdev_for_each_uc_addr(ha, dev)
4641b027 472 qeth_l2_add_mac(card, ha);
d0c74825 473 netif_addr_unlock_bh(dev);
fe5c8028 474
0973292f 475 hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) {
00c163f1
JW		 476 switch (mac->disp_flag) {
477 case QETH_DISP_ADDR_DELETE:
8174aa8a 478 qeth_l2_remove_mac(card, mac->mac_addr);
fe5c8028
LD		 479 hash_del(&mac->hnode);
480 kfree(mac);
00c163f1
JW		 481 break;
482 case QETH_DISP_ADDR_ADD:
8174aa8a 483 rc = qeth_l2_write_mac(card, mac->mac_addr);
fe5c8028
LD		 484 if (rc) {
485 hash_del(&mac->hnode);
486 kfree(mac);
00c163f1
JW		 487 break;
488 }
df561f66 489 fallthrough;
00c163f1
JW		 490 default:
491 /* for next call to set_rx_mode(): */
5f78e29c 492 mac->disp_flag = QETH_DISP_ADDR_DELETE;
00c163f1 493 }
fe5c8028 494 }
7db2266a 495
59b757a9 496 qeth_l2_set_promisc_mode(card);
4a71df50
FB		 497}
498
7286384b
JW		 499static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
500 struct net_device *dev)
501{
502 struct qeth_card *card = dev->ml_priv;
3a18d754 503 u16 txq = skb_get_queue_mapping(skb);
7286384b 504 struct qeth_qdio_out_q *queue;
7286384b
JW		 505 int rc;
506
eeac0e20
JW		 507 if (!skb_is_gso(skb))
508 qdisc_skb_cb(skb)->pkt_len = skb->len;
3a18d754 509 if (IS_IQD(card))
54a50941
JW		 510 txq = qeth_iqd_translate_txq(dev, txq);
511 queue = card->qdio.out_qs[txq];
7286384b 512
a8c7629c
JW		 513 rc = qeth_xmit(card, skb, queue, vlan_get_protocol(skb),
514 qeth_l2_fill_header);
eeac0e20 515 if (!rc)
7286384b 516 return NETDEV_TX_OK;
4a71df50 517
b0abc4f5 518 QETH_TXQ_STAT_INC(queue, tx_dropped);
104b4859 519 kfree_skb(skb);
4a71df50
FB		 520 return NETDEV_TX_OK;
521}
522
1b9e410f
JW		 523static u16 qeth_l2_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
524 struct net_device *sb_dev)
3a18d754 525{
1b9e410f
JW		 526 return qeth_iqd_select_queue(dev, skb, qeth_get_ether_cast_type(skb),
527 sb_dev);
3a18d754
JW		 528}
529
d0c74825
JW		 530static void qeth_l2_set_rx_mode(struct net_device *dev)
531{
532 struct qeth_card *card = dev->ml_priv;
533
534 schedule_work(&card->rx_mode_work);
535}
536
a0138f59
AW		 537/**
538 * qeth_l2_pnso() - perform network subchannel operation
539 * @card: qeth_card structure pointer
4fea49a7 540 * @oc: Operation Code
a0138f59
AW		 541 * @cnc: Boolean Change-Notification Control
542 * @cb: Callback function will be executed for each element
543 * of the address list
544 * @priv: Pointer to pass to the callback function.
545 *
546 * Collects network information in a network address list and calls the
547 * callback function for every entry in the list. If "change-notification-
548 * control" is set, further changes in the address list will be reported
549 * via the IPA command.
550 */
4fea49a7 551static int qeth_l2_pnso(struct qeth_card *card, u8 oc, int cnc,
a0138f59
AW		 552 void (*cb)(void *priv, struct chsc_pnso_naid_l2 *entry),
553 void *priv)
554{
555 struct ccw_device *ddev = CARD_DDEV(card);
556 struct chsc_pnso_area *rr;
557 u32 prev_instance = 0;
558 int isfirstblock = 1;
559 int i, size, elems;
560 int rc;
561
a0138f59
AW		 562 rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL);
563 if (rr == NULL)
564 return -ENOMEM;
565 do {
4fea49a7 566 QETH_CARD_TEXT(card, 2, "PNSO");
a0138f59 567 /* on the first iteration, naihdr.resume_token will be zero */
4fea49a7
AW		 568 rc = ccw_device_pnso(ddev, rr, oc, rr->naihdr.resume_token,
569 cnc);
a0138f59
AW		 570 if (rc)
571 continue;
572 if (cb == NULL)
573 continue;
574
575 size = rr->naihdr.naids;
576 if (size != sizeof(struct chsc_pnso_naid_l2)) {
577 WARN_ON_ONCE(1);
578 continue;
579 }
580
581 elems = (rr->response.length - sizeof(struct chsc_header) -
582 sizeof(struct chsc_pnso_naihdr)) / size;
583
584 if (!isfirstblock && (rr->naihdr.instance != prev_instance)) {
585 /* Inform the caller that they need to scrap */
586 /* the data that was already reported via cb */
587 rc = -EAGAIN;
588 break;
589 }
590 isfirstblock = 0;
591 prev_instance = rr->naihdr.instance;
592 for (i = 0; i < elems; i++)
593 (*cb)(priv, &rr->entries[i]);
594 } while ((rc == -EBUSY) || (!rc && /* list stored */
595 /* resume token is non-zero => list incomplete */
596 (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2)));
597
598 if (rc)
599 QETH_CARD_TEXT_(card, 2, "PNrp%04x", rr->response.code);
600
601 free_page((unsigned long)rr);
602 return rc;
603}
604
10a6cfc0
AW		 605static bool qeth_is_my_net_if_token(struct qeth_card *card,
606 struct net_if_token *token)
607{
608 return ((card->info.ddev_devno == token->devnum) &&
609 (card->info.cssid == token->cssid) &&
610 (card->info.iid == token->iid) &&
611 (card->info.ssid == token->ssid) &&
612 (card->info.chpid == token->chpid) &&
613 (card->info.chid == token->chid));
614}
615
616/**
617 * qeth_l2_dev2br_fdb_notify() - update fdb of master bridge
618 * @card: qeth_card structure pointer
619 * @code: event bitmask: high order bit 0x80 set to
620 * 1 - removal of an object
621 * 0 - addition of an object
622 * Object type(s):
623 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC
624 * @token: "network token" structure identifying 'physical' location
625 * of the target
626 * @addr_lnid: structure with MAC address and VLAN ID of the target
627 */
628static void qeth_l2_dev2br_fdb_notify(struct qeth_card *card, u8 code,
629 struct net_if_token *token,
630 struct mac_addr_lnid *addr_lnid)
631{
c35b57ce 632 struct switchdev_notifier_fdb_info info = {};
10a6cfc0
AW		 633 u8 ntfy_mac[ETH_ALEN];
634
635 ether_addr_copy(ntfy_mac, addr_lnid->mac);
636 /* Ignore VLAN only changes */
637 if (!(code & IPA_ADDR_CHANGE_CODE_MACADDR))
638 return;
639 /* Ignore mcast entries */
640 if (is_multicast_ether_addr(ntfy_mac))
641 return;
642 /* Ignore my own addresses */
643 if (qeth_is_my_net_if_token(card, token))
644 return;
645
646 info.addr = ntfy_mac;
647 /* don't report VLAN IDs */
648 info.vid = 0;
649 info.added_by_user = false;
650 info.offloaded = true;
651
652 if (code & IPA_ADDR_CHANGE_CODE_REMOVAL) {
653 call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE,
654 card->dev, &info.info, NULL);
655 QETH_CARD_TEXT(card, 4, "andelmac");
656 QETH_CARD_TEXT_(card, 4,
22e2b5cd 657 "mc%012llx", ether_addr_to_u64(ntfy_mac));
10a6cfc0
AW		 658 } else {
659 call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE,
660 card->dev, &info.info, NULL);
661 QETH_CARD_TEXT(card, 4, "anaddmac");
662 QETH_CARD_TEXT_(card, 4,
22e2b5cd 663 "mc%012llx", ether_addr_to_u64(ntfy_mac));
10a6cfc0
AW		 664 }
665}
666
817741a8
AW		 667static void qeth_l2_dev2br_an_set_cb(void *priv,
668 struct chsc_pnso_naid_l2 *entry)
669{
670 u8 code = IPA_ADDR_CHANGE_CODE_MACADDR;
671 struct qeth_card *card = priv;
672
673 if (entry->addr_lnid.lnid < VLAN_N_VID)
674 code |= IPA_ADDR_CHANGE_CODE_VLANID;
675 qeth_l2_dev2br_fdb_notify(card, code,
676 (struct net_if_token *)&entry->nit,
677 (struct mac_addr_lnid *)&entry->addr_lnid);
678}
679
680/**
681 * qeth_l2_dev2br_an_set() -
682 * Enable or disable 'dev to bridge network address notification'
683 * @card: qeth_card structure pointer
684 * @enable: Enable or disable 'dev to bridge network address notification'
685 *
686 * Returns negative errno-compatible error indication or 0 on success.
687 *
688 * On enable, emits a series of address notifications for all
689 * currently registered hosts.
817741a8
AW		 690 */
691static int qeth_l2_dev2br_an_set(struct qeth_card *card, bool enable)
692{
693 int rc;
694
695 if (enable) {
696 QETH_CARD_TEXT(card, 2, "anseton");
697 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 1,
698 qeth_l2_dev2br_an_set_cb, card);
699 if (rc == -EAGAIN)
700 /* address notification enabled, but inconsistent
701 * addresses reported -> disable address notification
702 */
703 qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0,
704 NULL, NULL);
705 } else {
706 QETH_CARD_TEXT(card, 2, "ansetoff");
707 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL);
708 }
709
710 return rc;
711}
712
f7936b7b
AW		 713struct qeth_l2_br2dev_event_work {
714 struct work_struct work;
715 struct net_device *br_dev;
716 struct net_device *lsync_dev;
717 struct net_device *dst_dev;
718 unsigned long event;
719 unsigned char addr[ETH_ALEN];
720};
721
2dbc7a1d
JW		 722static const struct net_device_ops qeth_l2_iqd_netdev_ops;
723static const struct net_device_ops qeth_l2_osa_netdev_ops;
4e20e73e
AW		 724
725static bool qeth_l2_must_learn(struct net_device *netdev,
726 struct net_device *dstdev)
727{
728 struct qeth_priv *priv;
729
730 priv = netdev_priv(netdev);
731 return (netdev != dstdev &&
732 (priv->brport_features & BR_LEARNING_SYNC) &&
733 !(br_port_flag_is_set(netdev, BR_ISOLATED) &&
734 br_port_flag_is_set(dstdev, BR_ISOLATED)) &&
2dbc7a1d
JW		 735 (netdev->netdev_ops == &qeth_l2_iqd_netdev_ops ||
736 netdev->netdev_ops == &qeth_l2_osa_netdev_ops));
4e20e73e
AW		 737}
738
f7936b7b
AW		 739/**
740 * qeth_l2_br2dev_worker() - update local MACs
741 * @work: bridge to device FDB update
742 *
743 * Update local MACs of a learning_sync bridgeport so it can receive
744 * messages for a destination port.
745 * In case of an isolated learning_sync port, also update its isolated
746 * siblings.
747 */
748static void qeth_l2_br2dev_worker(struct work_struct *work)
749{
750 struct qeth_l2_br2dev_event_work *br2dev_event_work =
751 container_of(work, struct qeth_l2_br2dev_event_work, work);
752 struct net_device *lsyncdev = br2dev_event_work->lsync_dev;
753 struct net_device *dstdev = br2dev_event_work->dst_dev;
754 struct net_device *brdev = br2dev_event_work->br_dev;
755 unsigned long event = br2dev_event_work->event;
756 unsigned char *addr = br2dev_event_work->addr;
757 struct qeth_card *card = lsyncdev->ml_priv;
758 struct net_device *lowerdev;
759 struct list_head *iter;
760 int err = 0;
761
22e2b5cd
HC		 762 QETH_CARD_TEXT_(card, 4, "b2dw%04lx", event);
763 QETH_CARD_TEXT_(card, 4, "ma%012llx", ether_addr_to_u64(addr));
f7936b7b
AW		 764
765 rcu_read_lock();
766 /* Verify preconditions are still valid: */
767 if (!netif_is_bridge_port(lsyncdev) ||
768 brdev != netdev_master_upper_dev_get_rcu(lsyncdev))
769 goto unlock;
770 if (!qeth_l2_must_learn(lsyncdev, dstdev))
771 goto unlock;
772
773 if (br_port_flag_is_set(lsyncdev, BR_ISOLATED)) {
774 /* Update lsyncdev and its isolated sibling(s): */
775 iter = &brdev->adj_list.lower;
776 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
777 while (lowerdev) {
778 if (br_port_flag_is_set(lowerdev, BR_ISOLATED)) {
779 switch (event) {
780 case SWITCHDEV_FDB_ADD_TO_DEVICE:
781 err = dev_uc_add(lowerdev, addr);
782 break;
783 case SWITCHDEV_FDB_DEL_TO_DEVICE:
784 err = dev_uc_del(lowerdev, addr);
785 break;
786 default:
787 break;
788 }
789 if (err) {
790 QETH_CARD_TEXT(card, 2, "b2derris");
791 QETH_CARD_TEXT_(card, 2,
22e2b5cd 792 "err%02lx%03d", event,
f7936b7b
AW		 793 lowerdev->ifindex);
794 }
795 }
796 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
797 }
798 } else {
799 switch (event) {
800 case SWITCHDEV_FDB_ADD_TO_DEVICE:
801 err = dev_uc_add(lsyncdev, addr);
802 break;
803 case SWITCHDEV_FDB_DEL_TO_DEVICE:
804 err = dev_uc_del(lsyncdev, addr);
805 break;
806 default:
807 break;
808 }
809 if (err)
22e2b5cd 810 QETH_CARD_TEXT_(card, 2, "b2derr%02lx", event);
f7936b7b
AW		 811 }
812
813unlock:
814 rcu_read_unlock();
815 dev_put(brdev);
816 dev_put(lsyncdev);
817 dev_put(dstdev);
ebaaadc3 818 kfree(br2dev_event_work);
f7936b7b
AW		 819}
820
821static int qeth_l2_br2dev_queue_work(struct net_device *brdev,
822 struct net_device *lsyncdev,
823 struct net_device *dstdev,
824 unsigned long event,
825 const unsigned char *addr)
826{
827 struct qeth_l2_br2dev_event_work *worker_data;
828 struct qeth_card *card;
829
830 worker_data = kzalloc(sizeof(*worker_data), GFP_ATOMIC);
831 if (!worker_data)
832 return -ENOMEM;
833 INIT_WORK(&worker_data->work, qeth_l2_br2dev_worker);
834 worker_data->br_dev = brdev;
835 worker_data->lsync_dev = lsyncdev;
836 worker_data->dst_dev = dstdev;
837 worker_data->event = event;
838 ether_addr_copy(worker_data->addr, addr);
839
840 card = lsyncdev->ml_priv;
841 /* Take a reference on the sw port devices and the bridge */
842 dev_hold(brdev);
843 dev_hold(lsyncdev);
844 dev_hold(dstdev);
845 queue_work(card->event_wq, &worker_data->work);
846 return 0;
847}
848
4e20e73e
AW		 849/* Called under rtnl_lock */
850static int qeth_l2_switchdev_event(struct notifier_block *unused,
851 unsigned long event, void *ptr)
852{
853 struct net_device *dstdev, *brdev, *lowerdev;
854 struct switchdev_notifier_fdb_info *fdb_info;
855 struct switchdev_notifier_info *info = ptr;
856 struct list_head *iter;
857 struct qeth_card *card;
f7936b7b 858 int rc;
4e20e73e
AW		 859
860 if (!(event == SWITCHDEV_FDB_ADD_TO_DEVICE ||
861 event == SWITCHDEV_FDB_DEL_TO_DEVICE))
862 return NOTIFY_DONE;
863
864 dstdev = switchdev_notifier_info_to_dev(info);
865 brdev = netdev_master_upper_dev_get_rcu(dstdev);
866 if (!brdev || !netif_is_bridge_master(brdev))
867 return NOTIFY_DONE;
868 fdb_info = container_of(info,
869 struct switchdev_notifier_fdb_info,
870 info);
871 iter = &brdev->adj_list.lower;
872 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
873 while (lowerdev) {
874 if (qeth_l2_must_learn(lowerdev, dstdev)) {
875 card = lowerdev->ml_priv;
22e2b5cd 876 QETH_CARD_TEXT_(card, 4, "b2dqw%03lx", event);
f7936b7b
AW		 877 rc = qeth_l2_br2dev_queue_work(brdev, lowerdev,
878 dstdev, event,
879 fdb_info->addr);
880 if (rc) {
881 QETH_CARD_TEXT(card, 2, "b2dqwerr");
882 return NOTIFY_BAD;
883 }
4e20e73e
AW		 884 }
885 lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
886 }
887 return NOTIFY_DONE;
888}
889
890static struct notifier_block qeth_l2_sw_notifier = {
891 .notifier_call = qeth_l2_switchdev_event,
892};
893
60bb1089
AW		 894static refcount_t qeth_l2_switchdev_notify_refcnt;
895
896/* Called under rtnl_lock */
897static void qeth_l2_br2dev_get(void)
898{
4e20e73e
AW		 899 int rc;
900
60bb1089 901 if (!refcount_inc_not_zero(&qeth_l2_switchdev_notify_refcnt)) {
4e20e73e
AW		 902 rc = register_switchdev_notifier(&qeth_l2_sw_notifier);
903 if (rc) {
904 QETH_DBF_MESSAGE(2,
905 "failed to register qeth_l2_sw_notifier: %d\n",
906 rc);
907 } else {
908 refcount_set(&qeth_l2_switchdev_notify_refcnt, 1);
909 QETH_DBF_MESSAGE(2, "qeth_l2_sw_notifier registered\n");
910 }
60bb1089
AW		 911 }
912 QETH_DBF_TEXT_(SETUP, 2, "b2d+%04d",
913 qeth_l2_switchdev_notify_refcnt.refs.counter);
914}
915
916/* Called under rtnl_lock */
917static void qeth_l2_br2dev_put(void)
918{
4e20e73e
AW		 919 int rc;
920
60bb1089 921 if (refcount_dec_and_test(&qeth_l2_switchdev_notify_refcnt)) {
4e20e73e
AW		 922 rc = unregister_switchdev_notifier(&qeth_l2_sw_notifier);
923 if (rc) {
924 QETH_DBF_MESSAGE(2,
925 "failed to unregister qeth_l2_sw_notifier: %d\n",
926 rc);
927 } else {
928 QETH_DBF_MESSAGE(2,
929 "qeth_l2_sw_notifier unregistered\n");
930 }
60bb1089
AW		 931 }
932 QETH_DBF_TEXT_(SETUP, 2, "b2d-%04d",
933 qeth_l2_switchdev_notify_refcnt.refs.counter);
934}
935
780b6e7d
AW		 936static int qeth_l2_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
937 struct net_device *dev, u32 filter_mask,
938 int nlflags)
939{
940 struct qeth_priv *priv = netdev_priv(dev);
941 struct qeth_card *card = dev->ml_priv;
942 u16 mode = BRIDGE_MODE_UNDEF;
943
944 /* Do not even show qeth devs that cannot do bridge_setlink */
945 if (!priv->brport_hw_features || !netif_device_present(dev) ||
946 qeth_bridgeport_is_in_use(card))
947 return -EOPNOTSUPP;
948
949 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
950 mode, priv->brport_features,
951 priv->brport_hw_features,
952 nlflags, filter_mask, NULL);
953}
954
521c65b6
AW		 955static const struct nla_policy qeth_brport_policy[IFLA_BRPORT_MAX + 1] = {
956 [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 },
957};
958
959/**
960 * qeth_l2_bridge_setlink() - set bridgeport attributes
961 * @dev: netdevice
962 * @nlh: netlink message header
963 * @flags: bridge flags (here: BRIDGE_FLAGS_SELF)
964 * @extack: extended ACK report struct
965 *
966 * Called under rtnl_lock
967 */
968static int qeth_l2_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
969 u16 flags, struct netlink_ext_ack *extack)
970{
971 struct qeth_priv *priv = netdev_priv(dev);
972 struct nlattr *bp_tb[IFLA_BRPORT_MAX + 1];
973 struct qeth_card *card = dev->ml_priv;
974 struct nlattr *attr, *nested_attr;
975 bool enable, has_protinfo = false;
976 int rem1, rem2;
977 int rc;
978
979 if (!netif_device_present(dev))
980 return -ENODEV;
521c65b6
AW		 981
982 nlmsg_for_each_attr(attr, nlh, sizeof(struct ifinfomsg), rem1) {
983 if (nla_type(attr) == IFLA_PROTINFO) {
984 rc = nla_parse_nested(bp_tb, IFLA_BRPORT_MAX, attr,
985 qeth_brport_policy, extack);
986 if (rc)
987 return rc;
988 has_protinfo = true;
989 } else if (nla_type(attr) == IFLA_AF_SPEC) {
990 nla_for_each_nested(nested_attr, attr, rem2) {
991 if (nla_type(nested_attr) == IFLA_BRIDGE_FLAGS)
992 continue;
993 NL_SET_ERR_MSG_ATTR(extack, nested_attr,
994 "Unsupported attribute");
995 return -EINVAL;
996 }
997 } else {
998 NL_SET_ERR_MSG_ATTR(extack, attr, "Unsupported attribute");
999 return -EINVAL;
1000 }
1001 }
1002 if (!has_protinfo)
1003 return 0;
1004 if (!bp_tb[IFLA_BRPORT_LEARNING_SYNC])
1005 return -EINVAL;
953fb4dc
AW		 1006 if (!(priv->brport_hw_features & BR_LEARNING_SYNC)) {
1007 NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC],
1008 "Operation not supported by HW");
1009 return -EOPNOTSUPP;
1010 }
1011 if (!IS_ENABLED(CONFIG_NET_SWITCHDEV)) {
1012 NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC],
1013 "Requires NET_SWITCHDEV");
1014 return -EOPNOTSUPP;
1015 }
521c65b6
AW		 1016 enable = !!nla_get_u8(bp_tb[IFLA_BRPORT_LEARNING_SYNC]);
1017
1018 if (enable == !!(priv->brport_features & BR_LEARNING_SYNC))
1019 return 0;
1020
1021 mutex_lock(&card->sbp_lock);
1022 /* do not change anything if BridgePort is enabled */
1023 if (qeth_bridgeport_is_in_use(card)) {
1024 NL_SET_ERR_MSG(extack, "n/a (BridgePort)");
1025 rc = -EBUSY;
1026 } else if (enable) {
1027 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1028 rc = qeth_l2_dev2br_an_set(card, true);
60bb1089 1029 if (rc) {
521c65b6 1030 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
60bb1089 1031 } else {
521c65b6 1032 priv->brport_features |= BR_LEARNING_SYNC;
60bb1089
AW		 1033 qeth_l2_br2dev_get();
1034 }
521c65b6
AW		 1035 } else {
1036 rc = qeth_l2_dev2br_an_set(card, false);
1037 if (!rc) {
1038 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1039 priv->brport_features ^= BR_LEARNING_SYNC;
1040 qeth_l2_dev2br_fdb_flush(card);
60bb1089 1041 qeth_l2_br2dev_put();
521c65b6
AW		 1042 }
1043 }
1044 mutex_unlock(&card->sbp_lock);
1045
1046 return rc;
1047}
1048
2dbc7a1d
JW		 1049static const struct net_device_ops qeth_l2_iqd_netdev_ops = {
1050 .ndo_open = qeth_open,
1051 .ndo_stop = qeth_stop,
1052 .ndo_get_stats64 = qeth_get_stats64,
1053 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1054 .ndo_features_check = qeth_features_check,
1b9e410f 1055 .ndo_select_queue = qeth_l2_iqd_select_queue,
2dbc7a1d
JW		 1056 .ndo_validate_addr = qeth_l2_validate_addr,
1057 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1058 .ndo_eth_ioctl = qeth_do_ioctl,
1059 .ndo_siocdevprivate = qeth_siocdevprivate,
1060 .ndo_set_mac_address = qeth_l2_set_mac_address,
1061 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1062 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1063 .ndo_tx_timeout = qeth_tx_timeout,
1064 .ndo_fix_features = qeth_fix_features,
1065 .ndo_set_features = qeth_set_features,
1066 .ndo_bridge_getlink = qeth_l2_bridge_getlink,
1067 .ndo_bridge_setlink = qeth_l2_bridge_setlink,
1068};
1069
1070static const struct net_device_ops qeth_l2_osa_netdev_ops = {
e22355ea
JW		 1071 .ndo_open = qeth_open,
1072 .ndo_stop = qeth_stop,
b0abc4f5 1073 .ndo_get_stats64 = qeth_get_stats64,
8403b13c 1074 .ndo_start_xmit = qeth_l2_hard_start_xmit,
6d69b1f1 1075 .ndo_features_check = qeth_features_check,
1b9e410f 1076 .ndo_select_queue = qeth_osa_select_queue,
e22355ea 1077 .ndo_validate_addr = qeth_l2_validate_addr,
fe5c8028 1078 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
a7605370 1079 .ndo_eth_ioctl = qeth_do_ioctl,
18787eee 1080 .ndo_siocdevprivate = qeth_siocdevprivate,
8403b13c 1081 .ndo_set_mac_address = qeth_l2_set_mac_address,
8403b13c
FB		 1082 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1083 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
378ac80d 1084 .ndo_tx_timeout = qeth_tx_timeout,
8f43fb00 1085 .ndo_fix_features = qeth_fix_features,
780b6e7d 1086 .ndo_set_features = qeth_set_features,
8403b13c
FB		 1087};
1088
cd652be5 1089static int qeth_l2_setup_netdev(struct qeth_card *card)
4a71df50 1090{
2dbc7a1d
JW		 1091 card->dev->netdev_ops = IS_IQD(card) ? &qeth_l2_iqd_netdev_ops :
1092 &qeth_l2_osa_netdev_ops;
8024cc9e 1093 card->dev->needed_headroom = sizeof(struct qeth_hdr);
8024cc9e 1094 card->dev->priv_flags |= IFF_UNICAST_FLT;
9400c53f 1095
5fc692a7 1096 if (IS_OSM(card)) {
9400c53f 1097 card->dev->features |= NETIF_F_VLAN_CHALLENGED;
5fc692a7
JW		 1098 } else {
1099 if (!IS_VM_NIC(card))
1100 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
9400c53f 1101 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
5fc692a7 1102 }
0f342945 1103
379ac99e 1104 if (IS_OSD(card) && !IS_VM_NIC(card)) {
6d69b1f1 1105 card->dev->features |= NETIF_F_SG;
8f43fb00 1106 /* OSA 3S and earlier has no RX/TX support */
9bdc4411 1107 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
8f43fb00 1108 card->dev->hw_features |= NETIF_F_IP_CSUM;
9bdc4411
HW		 1109 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1110 }
4d7def2a 1111 }
571f9dd8
KM		 1112 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1113 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1114 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1115 }
d7e6ed97
KM		 1116 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) ||
1117 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) {
1118 card->dev->hw_features |= NETIF_F_RXCSUM;
1119 card->dev->vlan_features |= NETIF_F_RXCSUM;
1120 }
0aef8392
JW		 1121 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1122 card->dev->hw_features |= NETIF_F_TSO;
1123 card->dev->vlan_features |= NETIF_F_TSO;
1124 }
1125 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1126 card->dev->hw_features |= NETIF_F_TSO6;
1127 card->dev->vlan_features |= NETIF_F_TSO6;
1128 }
1129
1130 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1131 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso);
c619e9a6 1132 netif_keep_dst(card->dev);
ee8b7a11 1133 netif_set_tso_max_size(card->dev,
0aef8392
JW		 1134 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1));
1135 }
0d6f02d3 1136
b48b89f9 1137 netif_napi_add(card->dev, &card->napi, qeth_poll);
cd652be5 1138 return register_netdev(card->dev);
4a71df50
FB		 1139}
1140
521c10ea
JW		 1141static void qeth_l2_trace_features(struct qeth_card *card)
1142{
a45b3faf
HW		 1143 /* Set BridgePort features */
1144 QETH_CARD_TEXT(card, 2, "featuSBP");
521c10ea
JW		 1145 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
1146 sizeof(card->options.sbp.supported_funcs));
a45b3faf
HW		 1147 /* VNIC Characteristics features */
1148 QETH_CARD_TEXT(card, 2, "feaVNICC");
1149 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
1150 sizeof(card->options.vnicc.sup_chars));
521c10ea
JW		 1151}
1152
8ca769e2
JW		 1153static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card)
1154{
1155 if (!card->options.sbp.reflect_promisc &&
1156 card->options.sbp.role != QETH_SBP_ROLE_NONE) {
1157 /* Conditional to avoid spurious error messages */
1158 qeth_bridgeport_setrole(card, card->options.sbp.role);
1159 /* Let the callback function refresh the stored role value. */
1160 qeth_bridgeport_query_ports(card, &card->options.sbp.role,
1161 NULL);
1162 }
1163 if (card->options.sbp.hostnotification) {
1164 if (qeth_bridgeport_an_set(card, 1))
1165 card->options.sbp.hostnotification = 0;
8ca769e2
JW		 1166 }
1167}
1168
fa115adf
AW		 1169/**
1170 * qeth_l2_detect_dev2br_support() -
1171 * Detect whether this card supports 'dev to bridge fdb network address
1172 * change notification' and thus can support the learning_sync bridgeport
1173 * attribute
1174 * @card: qeth_card structure pointer
fa115adf
AW		 1175 */
1176static void qeth_l2_detect_dev2br_support(struct qeth_card *card)
1177{
1178 struct qeth_priv *priv = netdev_priv(card->dev);
1179 bool dev2br_supported;
fa115adf
AW		 1180
1181 QETH_CARD_TEXT(card, 2, "d2brsup");
1182 if (!IS_IQD(card))
1183 return;
1184
1185 /* dev2br requires valid cssid,iid,chid */
0d0e2b53
AW		 1186 dev2br_supported = card->info.ids_valid &&
1187 css_general_characteristics.enarf;
fa115adf
AW		 1188 QETH_CARD_TEXT_(card, 2, "D2Bsup%02x", dev2br_supported);
1189
1190 if (dev2br_supported)
1191 priv->brport_hw_features |= BR_LEARNING_SYNC;
1192 else
1193 priv->brport_hw_features &= ~BR_LEARNING_SYNC;
1194}
1195
521c65b6
AW		 1196static void qeth_l2_enable_brport_features(struct qeth_card *card)
1197{
1198 struct qeth_priv *priv = netdev_priv(card->dev);
1199 int rc;
1200
1201 if (priv->brport_features & BR_LEARNING_SYNC) {
1202 if (priv->brport_hw_features & BR_LEARNING_SYNC) {
1203 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1204 rc = qeth_l2_dev2br_an_set(card, true);
1205 if (rc == -EAGAIN) {
1206 /* Recoverable error, retry once */
1207 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1208 qeth_l2_dev2br_fdb_flush(card);
1209 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1210 rc = qeth_l2_dev2br_an_set(card, true);
1211 }
1212 if (rc) {
1213 netdev_err(card->dev,
1214 "failed to enable bridge learning_sync: %d\n",
1215 rc);
1216 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1217 qeth_l2_dev2br_fdb_flush(card);
1218 priv->brport_features ^= BR_LEARNING_SYNC;
1219 }
1220 } else {
1221 dev_warn(&card->gdev->dev,
1222 "bridge learning_sync not supported\n");
1223 priv->brport_features ^= BR_LEARNING_SYNC;
1224 }
1225 }
1226}
1227
b4d72c08
EC		 1228/* SETBRIDGEPORT support, async notifications */
1229
9f48b9db
EC		 1230enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1231
1232/**
1233 * qeth_bridge_emit_host_event() - bridgeport address change notification
1234 * @card: qeth_card structure pointer, for udev events.
1235 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1236 * and reset token and addr_lnid are unused and may be NULL.
1237 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1238 * object, 0 - addition of an object.
1239 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1240 * @token: "network token" structure identifying physical address of the port.
1241 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1242 *
1243 * This function is called when registrations and deregistrations are
1244 * reported by the hardware, and also when notifications are enabled -
1245 * for all currently registered addresses.
1246 */
1247static void qeth_bridge_emit_host_event(struct qeth_card *card,
a0138f59
AW		 1248 enum qeth_an_event_type evtype,
1249 u8 code,
1250 struct net_if_token *token,
1251 struct mac_addr_lnid *addr_lnid)
9f48b9db
EC		 1252{
1253 char str[7][32];
1254 char *env[8];
1255 int i = 0;
1256
1257 switch (evtype) {
1258 case anev_reg_unreg:
74c05a38
TW		 1259 scnprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1260 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1261 ? "deregister" : "register");
9f48b9db
EC		 1262 env[i] = str[i]; i++;
1263 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
74c05a38
TW		 1264 scnprintf(str[i], sizeof(str[i]), "VLAN=%d",
1265 addr_lnid->lnid);
9f48b9db
EC		 1266 env[i] = str[i]; i++;
1267 }
1268 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
74c05a38
TW		 1269 scnprintf(str[i], sizeof(str[i]), "MAC=%pM",
1270 addr_lnid->mac);
9f48b9db
EC		 1271 env[i] = str[i]; i++;
1272 }
74c05a38
TW		 1273 scnprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1274 token->cssid, token->ssid, token->devnum);
9f48b9db 1275 env[i] = str[i]; i++;
74c05a38 1276 scnprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
9f48b9db 1277 env[i] = str[i]; i++;
74c05a38
TW		 1278 scnprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1279 token->chpid);
9f48b9db 1280 env[i] = str[i]; i++;
74c05a38
TW		 1281 scnprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x",
1282 token->chid);
9f48b9db
EC		 1283 env[i] = str[i]; i++;
1284 break;
1285 case anev_abort:
74c05a38 1286 scnprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
9f48b9db
EC		 1287 env[i] = str[i]; i++;
1288 break;
1289 case anev_reset:
74c05a38 1290 scnprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
9f48b9db
EC		 1291 env[i] = str[i]; i++;
1292 break;
1293 }
1294 env[i] = NULL;
1295 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1296}
1297
b4d72c08
EC		 1298struct qeth_bridge_state_data {
1299 struct work_struct worker;
1300 struct qeth_card *card;
61c6f217
JW		 1301 u8 role;
1302 u8 state;
b4d72c08
EC		 1303};
1304
1305static void qeth_bridge_state_change_worker(struct work_struct *work)
1306{
1307 struct qeth_bridge_state_data *data =
1308 container_of(work, struct qeth_bridge_state_data, worker);
b4d72c08
EC		 1309 char env_locrem[32];
1310 char env_role[32];
1311 char env_state[32];
1312 char *env[] = {
1313 env_locrem,
1314 env_role,
1315 env_state,
1316 NULL
1317 };
1318
74c05a38
TW		 1319 scnprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1320 scnprintf(env_role, sizeof(env_role), "ROLE=%s",
1321 (data->role == QETH_SBP_ROLE_NONE) ? "none" :
1322 (data->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1323 (data->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1324 "<INVALID>");
1325 scnprintf(env_state, sizeof(env_state), "STATE=%s",
1326 (data->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1327 (data->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1328 (data->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1329 "<INVALID>");
b4d72c08
EC		 1330 kobject_uevent_env(&data->card->gdev->dev.kobj,
1331 KOBJ_CHANGE, env);
1332 kfree(data);
1333}
1334
c044dc21
EC		 1335static void qeth_bridge_state_change(struct qeth_card *card,
1336 struct qeth_ipa_cmd *cmd)
b4d72c08 1337{
65b0494e 1338 struct qeth_sbp_port_data *qports = &cmd->data.sbp.data.port_data;
b4d72c08 1339 struct qeth_bridge_state_data *data;
b4d72c08
EC		 1340
1341 QETH_CARD_TEXT(card, 2, "brstchng");
02472e28
JW		 1342 if (qports->num_entries == 0) {
1343 QETH_CARD_TEXT(card, 2, "BPempty");
1344 return;
1345 }
b4d72c08 1346 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
8a593148 1347 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
b4d72c08
EC		 1348 return;
1349 }
61c6f217
JW		 1350
1351 data = kzalloc(sizeof(*data), GFP_ATOMIC);
b4d72c08
EC		 1352 if (!data) {
1353 QETH_CARD_TEXT(card, 2, "BPSalloc");
1354 return;
1355 }
1356 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1357 data->card = card;
61c6f217
JW		 1358 /* Information for the local port: */
1359 data->role = qports->entry[0].role;
1360 data->state = qports->entry[0].state;
1361
c0a2e4d1 1362 queue_work(card->event_wq, &data->worker);
b4d72c08 1363}
b4d72c08 1364
a0138f59 1365struct qeth_addr_change_data {
9d6a569a 1366 struct delayed_work dwork;
9f48b9db 1367 struct qeth_card *card;
a0138f59 1368 struct qeth_ipacmd_addr_change ac_event;
9f48b9db
EC		 1369};
1370
10a6cfc0
AW		 1371static void qeth_l2_dev2br_worker(struct work_struct *work)
1372{
1373 struct delayed_work *dwork = to_delayed_work(work);
1374 struct qeth_addr_change_data *data;
1375 struct qeth_card *card;
817741a8 1376 struct qeth_priv *priv;
10a6cfc0 1377 unsigned int i;
817741a8 1378 int rc;
10a6cfc0
AW		 1379
1380 data = container_of(dwork, struct qeth_addr_change_data, dwork);
1381 card = data->card;
817741a8 1382 priv = netdev_priv(card->dev);
10a6cfc0
AW		 1383
1384 QETH_CARD_TEXT(card, 4, "dev2brew");
1385
1386 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE)
1387 goto free;
1388
10a6cfc0 1389 if (data->ac_event.lost_event_mask) {
09840f70
JW		 1390 /* Potential re-config in progress, try again later: */
1391 if (!rtnl_trylock()) {
1392 queue_delayed_work(card->event_wq, dwork,
1393 msecs_to_jiffies(100));
1394 return;
1395 }
1396
1397 if (!netif_device_present(card->dev)) {
1398 rtnl_unlock();
1399 goto free;
1400 }
1401
10a6cfc0
AW		 1402 QETH_DBF_MESSAGE(3,
1403 "Address change notification overflow on device %x\n",
1404 CARD_DEVID(card));
817741a8
AW		 1405 /* Card fdb and bridge fdb are out of sync, card has stopped
1406 * notifications (no need to drain_workqueue). Purge all
1407 * 'extern_learn' entries from the parent bridge and restart
1408 * the notifications.
1409 */
1410 qeth_l2_dev2br_fdb_flush(card);
1411 rc = qeth_l2_dev2br_an_set(card, true);
1412 if (rc) {
1413 /* TODO: if we want to retry after -EAGAIN, be
1414 * aware there could be stale entries in the
1415 * workqueue now, that need to be drained.
1416 * For now we give up:
1417 */
1418 netdev_err(card->dev,
1419 "bridge learning_sync failed to recover: %d\n",
1420 rc);
1421 WRITE_ONCE(card->info.pnso_mode,
1422 QETH_PNSO_NONE);
1423 /* To remove fdb entries reported by an_set: */
1424 qeth_l2_dev2br_fdb_flush(card);
1425 priv->brport_features ^= BR_LEARNING_SYNC;
1426 } else {
1427 QETH_DBF_MESSAGE(3,
1428 "Address Notification resynced on device %x\n",
1429 CARD_DEVID(card));
1430 }
09840f70
JW		 1431
1432 rtnl_unlock();
10a6cfc0
AW		 1433 } else {
1434 for (i = 0; i < data->ac_event.num_entries; i++) {
1435 struct qeth_ipacmd_addr_change_entry *entry =
1436 &data->ac_event.entry[i];
1437 qeth_l2_dev2br_fdb_notify(card,
1438 entry->change_code,
1439 &entry->token,
1440 &entry->addr_lnid);
1441 }
1442 }
817741a8 1443
10a6cfc0
AW		 1444free:
1445 kfree(data);
1446}
1447
a0138f59 1448static void qeth_addr_change_event_worker(struct work_struct *work)
9f48b9db 1449{
9d6a569a
JW		 1450 struct delayed_work *dwork = to_delayed_work(work);
1451 struct qeth_addr_change_data *data;
1452 struct qeth_card *card;
9f48b9db
EC		 1453 int i;
1454
9d6a569a
JW		 1455 data = container_of(dwork, struct qeth_addr_change_data, dwork);
1456 card = data->card;
1457
a0138f59 1458 QETH_CARD_TEXT(data->card, 4, "adrchgew");
9d6a569a
JW		 1459
1460 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE)
1461 goto free;
1462
a0138f59 1463 if (data->ac_event.lost_event_mask) {
9d6a569a
JW		 1464 /* Potential re-config in progress, try again later: */
1465 if (!mutex_trylock(&card->sbp_lock)) {
1466 queue_delayed_work(card->event_wq, dwork,
1467 msecs_to_jiffies(100));
1468 return;
1469 }
1470
9f48b9db 1471 dev_info(&data->card->gdev->dev,
a0138f59 1472 "Address change notification stopped on %s (%s)\n",
84c91482 1473 netdev_name(card->dev),
a0138f59 1474 (data->ac_event.lost_event_mask == 0x01)
9f48b9db 1475 ? "Overflow"
a0138f59 1476 : (data->ac_event.lost_event_mask == 0x02)
9f48b9db
EC		 1477 ? "Bridge port state change"
1478 : "Unknown reason");
9d6a569a 1479
9f48b9db 1480 data->card->options.sbp.hostnotification = 0;
9d6a569a 1481 card->info.pnso_mode = QETH_PNSO_NONE;
c8183f54 1482 mutex_unlock(&data->card->sbp_lock);
9f48b9db 1483 qeth_bridge_emit_host_event(data->card, anev_abort,
a0138f59 1484 0, NULL, NULL);
9f48b9db 1485 } else
a0138f59 1486 for (i = 0; i < data->ac_event.num_entries; i++) {
9f48b9db 1487 struct qeth_ipacmd_addr_change_entry *entry =
a0138f59 1488 &data->ac_event.entry[i];
9f48b9db 1489 qeth_bridge_emit_host_event(data->card,
a0138f59
AW		 1490 anev_reg_unreg,
1491 entry->change_code,
1492 &entry->token,
1493 &entry->addr_lnid);
9f48b9db 1494 }
9d6a569a
JW		 1495
1496free:
9f48b9db
EC		 1497 kfree(data);
1498}
1499
a0138f59
AW		 1500static void qeth_addr_change_event(struct qeth_card *card,
1501 struct qeth_ipa_cmd *cmd)
9f48b9db
EC		 1502{
1503 struct qeth_ipacmd_addr_change *hostevs =
1504 &cmd->data.addrchange;
a0138f59 1505 struct qeth_addr_change_data *data;
9f48b9db
EC		 1506 int extrasize;
1507
9d6a569a
JW		 1508 if (card->info.pnso_mode == QETH_PNSO_NONE)
1509 return;
1510
a0138f59 1511 QETH_CARD_TEXT(card, 4, "adrchgev");
9f48b9db
EC		 1512 if (cmd->hdr.return_code != 0x0000) {
1513 if (cmd->hdr.return_code == 0x0010) {
1514 if (hostevs->lost_event_mask == 0x00)
1515 hostevs->lost_event_mask = 0xff;
1516 } else {
a0138f59 1517 QETH_CARD_TEXT_(card, 2, "ACHN%04x",
9f48b9db
EC		 1518 cmd->hdr.return_code);
1519 return;
1520 }
1521 }
1522 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1523 hostevs->num_entries;
a0138f59
AW		 1524 data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize,
1525 GFP_ATOMIC);
9f48b9db 1526 if (!data) {
a0138f59 1527 QETH_CARD_TEXT(card, 2, "ACNalloc");
9f48b9db
EC		 1528 return;
1529 }
10a6cfc0
AW		 1530 if (card->info.pnso_mode == QETH_PNSO_BRIDGEPORT)
1531 INIT_DELAYED_WORK(&data->dwork, qeth_addr_change_event_worker);
1532 else
1533 INIT_DELAYED_WORK(&data->dwork, qeth_l2_dev2br_worker);
9f48b9db 1534 data->card = card;
8f1e1658
KC		 1535 data->ac_event = *hostevs;
1536 memcpy(data->ac_event.entry, hostevs->entry, extrasize);
9d6a569a 1537 queue_delayed_work(card->event_wq, &data->dwork, 0);
9f48b9db 1538}
9f48b9db 1539
b4d72c08
EC		 1540/* SETBRIDGEPORT support; sending commands */
1541
1542struct _qeth_sbp_cbctl {
b4d72c08
EC		 1543 union {
1544 u32 supported;
1545 struct {
1546 enum qeth_sbp_roles *role;
1547 enum qeth_sbp_states *state;
1548 } qports;
1549 } data;
1550};
1551
b4d72c08 1552static int qeth_bridgeport_makerc(struct qeth_card *card,
1709ff8d 1553 struct qeth_ipa_cmd *cmd)
b4d72c08 1554{
1709ff8d
JW		 1555 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp;
1556 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code;
1557 u16 ipa_rc = cmd->hdr.return_code;
1558 u16 sbp_rc = sbp->hdr.return_code;
b4d72c08
EC		 1559 int rc;
1560
1709ff8d
JW		 1561 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS)
1562 return 0;
1563
1564 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) ||
1565 (!IS_IQD(card) && ipa_rc == sbp_rc)) {
1566 switch (sbp_rc) {
2063a5f5 1567 case IPA_RC_SUCCESS:
b4d72c08
EC		 1568 rc = 0;
1569 break;
2063a5f5
KM		 1570 case IPA_RC_L2_UNSUPPORTED_CMD:
1571 case IPA_RC_UNSUPPORTED_COMMAND:
ffb95251 1572 rc = -EOPNOTSUPP;
b4d72c08 1573 break;
2063a5f5
KM		 1574 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1575 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
b4d72c08
EC		 1576 rc = -ENODEV; /* maybe not the best code here? */
1577 dev_err(&card->gdev->dev,
9c23f4da 1578 "The device is not configured as a Bridge Port\n");
b4d72c08 1579 break;
2063a5f5
KM		 1580 case IPA_RC_SBP_OSA_OS_MISMATCH:
1581 case IPA_RC_SBP_IQD_OS_MISMATCH:
1b05cf62
EC		 1582 rc = -EPERM;
1583 dev_err(&card->gdev->dev,
1584 "A Bridge Port is already configured by a different operating system\n");
1585 break;
2063a5f5
KM		 1586 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1587 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
b4d72c08
EC		 1588 switch (setcmd) {
1589 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1590 rc = -EEXIST;
1591 dev_err(&card->gdev->dev,
9c23f4da 1592 "The LAN already has a primary Bridge Port\n");
b4d72c08
EC		 1593 break;
1594 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1595 rc = -EBUSY;
1596 dev_err(&card->gdev->dev,
9c23f4da 1597 "The device is already a primary Bridge Port\n");
b4d72c08
EC		 1598 break;
1599 default:
1600 rc = -EIO;
1601 }
1602 break;
2063a5f5
KM		 1603 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1604 case IPA_RC_SBP_IQD_CURRENT_SECOND:
b4d72c08
EC		 1605 rc = -EBUSY;
1606 dev_err(&card->gdev->dev,
9c23f4da 1607 "The device is already a secondary Bridge Port\n");
b4d72c08 1608 break;
2063a5f5
KM		 1609 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1610 case IPA_RC_SBP_IQD_LIMIT_SECOND:
b4d72c08
EC		 1611 rc = -EEXIST;
1612 dev_err(&card->gdev->dev,
9c23f4da 1613 "The LAN cannot have more secondary Bridge Ports\n");
b4d72c08 1614 break;
2063a5f5
KM		 1615 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1616 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
b4d72c08
EC		 1617 rc = -EBUSY;
1618 dev_err(&card->gdev->dev,
9c23f4da 1619 "The device is already a primary Bridge Port\n");
b4d72c08 1620 break;
2063a5f5
KM		 1621 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1622 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
b4d72c08
EC		 1623 rc = -EACCES;
1624 dev_err(&card->gdev->dev,
9c23f4da 1625 "The device is not authorized to be a Bridge Port\n");
b4d72c08
EC		 1626 break;
1627 default:
1628 rc = -EIO;
1629 }
1709ff8d
JW		 1630 } else {
1631 switch (ipa_rc) {
9c23f4da 1632 case IPA_RC_NOTSUPP:
ffb95251 1633 rc = -EOPNOTSUPP;
9c23f4da
EC		 1634 break;
1635 case IPA_RC_UNSUPPORTED_COMMAND:
ffb95251 1636 rc = -EOPNOTSUPP;
9c23f4da
EC		 1637 break;
1638 default:
1639 rc = -EIO;
1640 }
1709ff8d 1641 }
9c23f4da 1642
b4d72c08 1643 if (rc) {
1709ff8d
JW		 1644 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc);
1645 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc);
b4d72c08
EC		 1646 }
1647 return rc;
1648}
1649
d65626ad
JW		 1650static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1651 enum qeth_ipa_sbp_cmd sbp_cmd,
b9150461 1652 unsigned int data_length)
9c23f4da 1653{
379ac99e
JW		 1654 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD :
1655 IPA_CMD_SETBRIDGEPORT_OSA;
b9150461 1656 struct qeth_ipacmd_sbp_hdr *hdr;
d65626ad 1657 struct qeth_cmd_buffer *iob;
d65626ad 1658
b9150461
JW		 1659 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE,
1660 data_length +
1661 offsetof(struct qeth_ipacmd_setbridgeport,
1662 data));
d65626ad
JW		 1663 if (!iob)
1664 return iob;
b9150461
JW		 1665
1666 hdr = &__ipa_cmd(iob)->data.sbp.hdr;
1667 hdr->cmdlength = sizeof(*hdr) + data_length;
1668 hdr->command_code = sbp_cmd;
1669 hdr->used_total = 1;
1670 hdr->seq_no = 1;
d65626ad 1671 return iob;
9c23f4da
EC		 1672}
1673
b4d72c08
EC		 1674static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1675 struct qeth_reply *reply, unsigned long data)
1676{
1677 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1678 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1709ff8d
JW		 1679 int rc;
1680
b4d72c08 1681 QETH_CARD_TEXT(card, 2, "brqsupcb");
1709ff8d
JW		 1682 rc = qeth_bridgeport_makerc(card, cmd);
1683 if (rc)
1684 return rc;
1685
1686 cbctl->data.supported =
1687 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
b4d72c08
EC		 1688 return 0;
1689}
1690
1691/**
1692 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1693 * @card: qeth_card structure pointer.
1694 *
1695 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1696 * strucutre: card->options.sbp.supported_funcs.
1697 */
c044dc21 1698static void qeth_bridgeport_query_support(struct qeth_card *card)
b4d72c08
EC		 1699{
1700 struct qeth_cmd_buffer *iob;
b4d72c08
EC		 1701 struct _qeth_sbp_cbctl cbctl;
1702
1703 QETH_CARD_TEXT(card, 2, "brqsuppo");
d65626ad 1704 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
b9150461 1705 SBP_DATA_SIZEOF(query_cmds_supp));
1aec42bc
TR		 1706 if (!iob)
1707 return;
1709ff8d 1708
b4d72c08 1709 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1709ff8d 1710 &cbctl)) {
b4d72c08 1711 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1709ff8d 1712 card->options.sbp.supported_funcs = 0;
b4d72c08
EC		 1713 return;
1714 }
1715 card->options.sbp.supported_funcs = cbctl.data.supported;
1716}
b4d72c08
EC		 1717
1718static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1719 struct qeth_reply *reply, unsigned long data)
1720{
1721 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
b4d72c08 1722 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
65b0494e 1723 struct qeth_sbp_port_data *qports;
1709ff8d 1724 int rc;
b4d72c08
EC		 1725
1726 QETH_CARD_TEXT(card, 2, "brqprtcb");
1709ff8d
JW		 1727 rc = qeth_bridgeport_makerc(card, cmd);
1728 if (rc)
1729 return rc;
1730
65b0494e 1731 qports = &cmd->data.sbp.data.port_data;
b4d72c08 1732 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
b4d72c08 1733 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1709ff8d 1734 return -EINVAL;
b4d72c08
EC		 1735 }
1736 /* first entry contains the state of the local port */
1737 if (qports->num_entries > 0) {
1738 if (cbctl->data.qports.role)
1739 *cbctl->data.qports.role = qports->entry[0].role;
1740 if (cbctl->data.qports.state)
1741 *cbctl->data.qports.state = qports->entry[0].state;
1742 }
1743 return 0;
1744}
1745
1746/**
1747 * qeth_bridgeport_query_ports() - query local bridgeport status.
1748 * @card: qeth_card structure pointer.
1749 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1750 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1751 *
1752 * Returns negative errno-compatible error indication or 0 on success.
1753 *
1754 * 'role' and 'state' are not updated in case of hardware operation failure.
1755 */
1756int qeth_bridgeport_query_ports(struct qeth_card *card,
1757 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1758{
b4d72c08 1759 struct qeth_cmd_buffer *iob;
b4d72c08
EC		 1760 struct _qeth_sbp_cbctl cbctl = {
1761 .data = {
1762 .qports = {
1763 .role = role,
1764 .state = state,
1765 },
1766 },
1767 };
1768
1769 QETH_CARD_TEXT(card, 2, "brqports");
1770 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1771 return -EOPNOTSUPP;
d65626ad 1772 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1aec42bc
TR		 1773 if (!iob)
1774 return -ENOMEM;
1709ff8d
JW		 1775
1776 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1777 &cbctl);
b4d72c08 1778}
b4d72c08
EC		 1779
1780static int qeth_bridgeport_set_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;
1709ff8d 1784
b4d72c08 1785 QETH_CARD_TEXT(card, 2, "brsetrcb");
1709ff8d 1786 return qeth_bridgeport_makerc(card, cmd);
b4d72c08
EC		 1787}
1788
1789/**
1790 * qeth_bridgeport_setrole() - Assign primary role to the port.
1791 * @card: qeth_card structure pointer.
1792 * @role: Role to assign.
1793 *
1794 * Returns negative errno-compatible error indication or 0 on success.
1795 */
1796int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1797{
b4d72c08 1798 struct qeth_cmd_buffer *iob;
b4d72c08 1799 enum qeth_ipa_sbp_cmd setcmd;
b9150461 1800 unsigned int cmdlength = 0;
b4d72c08
EC		 1801
1802 QETH_CARD_TEXT(card, 2, "brsetrol");
1803 switch (role) {
1804 case QETH_SBP_ROLE_NONE:
1805 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
b4d72c08
EC		 1806 break;
1807 case QETH_SBP_ROLE_PRIMARY:
1808 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
b9150461 1809 cmdlength = SBP_DATA_SIZEOF(set_primary);
b4d72c08
EC		 1810 break;
1811 case QETH_SBP_ROLE_SECONDARY:
1812 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
b4d72c08
EC		 1813 break;
1814 default:
1815 return -EINVAL;
1816 }
1817 if (!(card->options.sbp.supported_funcs & setcmd))
1818 return -EOPNOTSUPP;
d65626ad 1819 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1aec42bc
TR		 1820 if (!iob)
1821 return -ENOMEM;
1709ff8d
JW		 1822
1823 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL);
b4d72c08
EC		 1824}
1825
9f48b9db 1826static void qeth_bridgeport_an_set_cb(void *priv,
a0138f59 1827 struct chsc_pnso_naid_l2 *entry)
9f48b9db
EC		 1828{
1829 struct qeth_card *card = (struct qeth_card *)priv;
9f48b9db
EC		 1830 u8 code;
1831
9f48b9db 1832 code = IPA_ADDR_CHANGE_CODE_MACADDR;
a0138f59 1833 if (entry->addr_lnid.lnid < VLAN_N_VID)
9f48b9db
EC		 1834 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1835 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
a0138f59
AW		 1836 (struct net_if_token *)&entry->nit,
1837 (struct mac_addr_lnid *)&entry->addr_lnid);
9f48b9db
EC		 1838}
1839
1840/**
1841 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1842 * @card: qeth_card structure pointer.
1843 * @enable: 0 - disable, non-zero - enable notifications
1844 *
1845 * Returns negative errno-compatible error indication or 0 on success.
1846 *
1847 * On enable, emits a series of address notifications udev events for all
1848 * currently registered hosts.
1849 */
1850int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1851{
1852 int rc;
9f48b9db 1853
9f48b9db
EC		 1854 if (!card->options.sbp.supported_funcs)
1855 return -EOPNOTSUPP;
9f48b9db
EC		 1856
1857 if (enable) {
1858 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
9d6a569a 1859 qeth_l2_set_pnso_mode(card, QETH_PNSO_BRIDGEPORT);
4fea49a7
AW		 1860 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 1,
1861 qeth_bridgeport_an_set_cb, card);
9d6a569a
JW		 1862 if (rc)
1863 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1864 } else {
4fea49a7 1865 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 0, NULL, NULL);
9d6a569a
JW		 1866 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1867 }
a0138f59 1868 return rc;
9f48b9db 1869}
9f48b9db 1870
a45b3faf
HW		 1871/* VNIC Characteristics support */
1872
1873/* handle VNICC IPA command return codes; convert to error codes */
742d4d40 1874static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc)
a45b3faf
HW		 1875{
1876 int rc;
1877
1878 switch (ipa_rc) {
1879 case IPA_RC_SUCCESS:
1880 return ipa_rc;
1881 case IPA_RC_L2_UNSUPPORTED_CMD:
1882 case IPA_RC_NOTSUPP:
1883 rc = -EOPNOTSUPP;
1884 break;
1885 case IPA_RC_VNICC_OOSEQ:
1886 rc = -EALREADY;
1887 break;
1888 case IPA_RC_VNICC_VNICBP:
1889 rc = -EBUSY;
1890 break;
1891 case IPA_RC_L2_ADDR_TABLE_FULL:
1892 rc = -ENOSPC;
1893 break;
1894 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
1895 rc = -EACCES;
1896 break;
1897 default:
1898 rc = -EIO;
1899 }
1900
1901 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
1902 return rc;
1903}
1904
a45b3faf
HW		 1905/* generic VNICC request call back */
1906static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
1907 struct qeth_reply *reply,
1908 unsigned long data)
1909{
1910 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1911 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
2744d811 1912 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command;
a45b3faf
HW		 1913
1914 QETH_CARD_TEXT(card, 2, "vniccrcb");
1915 if (cmd->hdr.return_code)
742d4d40 1916 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code);
a45b3faf 1917 /* return results to caller */
2cfb4810
JW		 1918 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported;
1919 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled;
a45b3faf 1920
2744d811 1921 if (sub_cmd == IPA_VNICC_QUERY_CMDS)
49f42f5d 1922 *(u32 *)reply->param = rep->data.query_cmds.sup_cmds;
2744d811 1923 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT)
49f42f5d 1924 *(u32 *)reply->param = rep->data.getset_timeout.timeout;
349d13d5 1925
a45b3faf
HW		 1926 return 0;
1927}
1928
2cfb4810
JW		 1929static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card,
1930 u32 vnicc_cmd,
1931 unsigned int data_length)
a45b3faf 1932{
2cfb4810 1933 struct qeth_ipacmd_vnicc_hdr *hdr;
a45b3faf 1934 struct qeth_cmd_buffer *iob;
a45b3faf 1935
2cfb4810
JW		 1936 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE,
1937 data_length +
1938 offsetof(struct qeth_ipacmd_vnicc, data));
a45b3faf 1939 if (!iob)
2cfb4810 1940 return NULL;
a45b3faf 1941
2cfb4810
JW		 1942 hdr = &__ipa_cmd(iob)->data.vnicc.hdr;
1943 hdr->data_length = sizeof(*hdr) + data_length;
1944 hdr->sub_command = vnicc_cmd;
1945 return iob;
a45b3faf
HW		 1946}
1947
1948/* VNICC query VNIC characteristics request */
1949static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
1950{
2cfb4810
JW		 1951 struct qeth_cmd_buffer *iob;
1952
1953 QETH_CARD_TEXT(card, 2, "vniccqch");
1954 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0);
1955 if (!iob)
1956 return -ENOMEM;
a45b3faf 1957
2744d811 1958 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
a45b3faf
HW		 1959}
1960
caa1f0b1
HW		 1961/* VNICC query sub commands request */
1962static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
1963 u32 *sup_cmds)
1964{
2cfb4810
JW		 1965 struct qeth_cmd_buffer *iob;
1966
1967 QETH_CARD_TEXT(card, 2, "vniccqcm");
1968 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS,
1969 VNICC_DATA_SIZEOF(query_cmds));
1970 if (!iob)
1971 return -ENOMEM;
1972
1973 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char;
caa1f0b1 1974
49f42f5d 1975 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds);
caa1f0b1
HW		 1976}
1977
1978/* VNICC enable/disable characteristic request */
1979static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
1980 u32 cmd)
1981{
2cfb4810
JW		 1982 struct qeth_cmd_buffer *iob;
1983
1984 QETH_CARD_TEXT(card, 2, "vniccedc");
1985 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char));
1986 if (!iob)
1987 return -ENOMEM;
1988
1989 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char;
caa1f0b1 1990
2744d811 1991 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
caa1f0b1
HW		 1992}
1993
349d13d5
HW		 1994/* VNICC get/set timeout for characteristic request */
1995static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
1996 u32 cmd, u32 *timeout)
1997{
2cfb4810 1998 struct qeth_vnicc_getset_timeout *getset_timeout;
2cfb4810
JW		 1999 struct qeth_cmd_buffer *iob;
2000
2001 QETH_CARD_TEXT(card, 2, "vniccgst");
2002 iob = qeth_l2_vnicc_build_cmd(card, cmd,
2003 VNICC_DATA_SIZEOF(getset_timeout));
2004 if (!iob)
2005 return -ENOMEM;
2006
2007 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout;
2008 getset_timeout->vnic_char = vnicc;
2009
2010 if (cmd == IPA_VNICC_SET_TIMEOUT)
2011 getset_timeout->timeout = *timeout;
349d13d5 2012
49f42f5d 2013 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, timeout);
349d13d5
HW		 2014}
2015
58fa3575
JW		 2016/* recover user timeout setting */
2017static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
2018 u32 *timeout)
2019{
2020 if (card->options.vnicc.sup_chars & vnicc &&
2021 card->options.vnicc.getset_timeout_sup & vnicc &&
2022 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
2023 timeout))
2024 return false;
2025 *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2026 return true;
2027}
2028
caa1f0b1
HW		 2029/* set current VNICC flag state; called from sysfs store function */
2030int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
2031{
2032 int rc = 0;
2033 u32 cmd;
2034
2035 QETH_CARD_TEXT(card, 2, "vniccsch");
2036
caa1f0b1
HW		 2037 /* check if characteristic and enable/disable are supported */
2038 if (!(card->options.vnicc.sup_chars & vnicc) ||
2039 !(card->options.vnicc.set_char_sup & vnicc))
2040 return -EOPNOTSUPP;
2041
6f3846f0
AW		 2042 if (qeth_bridgeport_is_in_use(card))
2043 return -EBUSY;
2044
caa1f0b1
HW		 2045 /* set enable/disable command and store wanted characteristic */
2046 if (state) {
2047 cmd = IPA_VNICC_ENABLE;
2048 card->options.vnicc.wanted_chars |= vnicc;
2049 } else {
2050 cmd = IPA_VNICC_DISABLE;
2051 card->options.vnicc.wanted_chars &= ~vnicc;
2052 }
2053
2054 /* do we need to do anything? */
2055 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
2056 return rc;
2057
2058 /* if card is not ready, simply stop here */
2059 if (!qeth_card_hw_is_reachable(card)) {
2060 if (state)
2061 card->options.vnicc.cur_chars |= vnicc;
2062 else
2063 card->options.vnicc.cur_chars &= ~vnicc;
2064 return rc;
2065 }
2066
2067 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
2068 if (rc)
2069 card->options.vnicc.wanted_chars =
2070 card->options.vnicc.cur_chars;
349d13d5
HW		 2071 else {
2072 /* successful online VNICC change; handle special cases */
2073 if (state && vnicc == QETH_VNICC_RX_BCAST)
2074 card->options.vnicc.rx_bcast_enabled = true;
2075 if (!state && vnicc == QETH_VNICC_LEARNING)
2076 qeth_l2_vnicc_recover_timeout(card, vnicc,
2077 &card->options.vnicc.learning_timeout);
2078 }
caa1f0b1
HW		 2079
2080 return rc;
2081}
2082
2083/* get current VNICC flag state; called from sysfs show function */
2084int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
2085{
2086 int rc = 0;
2087
2088 QETH_CARD_TEXT(card, 2, "vniccgch");
2089
caa1f0b1
HW		 2090 /* check if characteristic is supported */
2091 if (!(card->options.vnicc.sup_chars & vnicc))
2092 return -EOPNOTSUPP;
2093
6f3846f0
AW		 2094 if (qeth_bridgeport_is_in_use(card))
2095 return -EBUSY;
2096
caa1f0b1
HW		 2097 /* if card is ready, query current VNICC state */
2098 if (qeth_card_hw_is_reachable(card))
2099 rc = qeth_l2_vnicc_query_chars(card);
2100
2101 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
2102 return rc;
2103}
2104
349d13d5
HW		 2105/* set VNICC timeout; called from sysfs store function. Currently, only learning
2106 * supports timeout
2107 */
2108int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
2109{
2110 int rc = 0;
2111
2112 QETH_CARD_TEXT(card, 2, "vniccsto");
2113
349d13d5
HW		 2114 /* check if characteristic and set_timeout are supported */
2115 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2116 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2117 return -EOPNOTSUPP;
2118
6f3846f0
AW		 2119 if (qeth_bridgeport_is_in_use(card))
2120 return -EBUSY;
2121
349d13d5
HW		 2122 /* do we need to do anything? */
2123 if (card->options.vnicc.learning_timeout == timeout)
2124 return rc;
2125
2126 /* if card is not ready, simply store the value internally and return */
2127 if (!qeth_card_hw_is_reachable(card)) {
2128 card->options.vnicc.learning_timeout = timeout;
2129 return rc;
2130 }
2131
2132 /* send timeout value to card; if successful, store value internally */
2133 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2134 IPA_VNICC_SET_TIMEOUT, &timeout);
2135 if (!rc)
2136 card->options.vnicc.learning_timeout = timeout;
2137
2138 return rc;
2139}
2140
2141/* get current VNICC timeout; called from sysfs show function. Currently, only
2142 * learning supports timeout
2143 */
2144int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
2145{
2146 int rc = 0;
2147
2148 QETH_CARD_TEXT(card, 2, "vniccgto");
2149
349d13d5
HW		 2150 /* check if characteristic and get_timeout are supported */
2151 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2152 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2153 return -EOPNOTSUPP;
6f3846f0
AW		 2154
2155 if (qeth_bridgeport_is_in_use(card))
2156 return -EBUSY;
2157
349d13d5
HW		 2158 /* if card is ready, get timeout. Otherwise, just return stored value */
2159 *timeout = card->options.vnicc.learning_timeout;
2160 if (qeth_card_hw_is_reachable(card))
2161 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2162 IPA_VNICC_GET_TIMEOUT,
2163 timeout);
2164
2165 return rc;
2166}
2167
caa1f0b1 2168/* check if VNICC is currently enabled */
817741a8 2169static bool _qeth_l2_vnicc_is_in_use(struct qeth_card *card)
caa1f0b1 2170{
e8a66d80 2171 if (!card->options.vnicc.sup_chars)
caa1f0b1
HW		 2172 return false;
2173 /* default values are only OK if rx_bcast was not enabled by user
2174 * or the card is offline.
2175 */
2176 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
2177 if (!card->options.vnicc.rx_bcast_enabled ||
2178 !qeth_card_hw_is_reachable(card))
2179 return false;
2180 }
2181 return true;
2182}
2183
817741a8
AW		 2184/**
2185 * qeth_bridgeport_allowed - are any qeth_bridgeport functions allowed?
2186 * @card: qeth_card structure pointer
2187 *
2188 * qeth_bridgeport functionality is mutually exclusive with usage of the
2189 * VNIC Characteristics and dev2br address notifications
2190 */
2191bool qeth_bridgeport_allowed(struct qeth_card *card)
2192{
2193 struct qeth_priv *priv = netdev_priv(card->dev);
2194
2195 return (!_qeth_l2_vnicc_is_in_use(card) &&
2196 !(priv->brport_features & BR_LEARNING_SYNC));
2197}
2198
caa1f0b1
HW		 2199/* recover user characteristic setting */
2200static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2201 bool enable)
2202{
2203 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2204
2205 if (card->options.vnicc.sup_chars & vnicc &&
2206 card->options.vnicc.set_char_sup & vnicc &&
2207 !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2208 return false;
2209 card->options.vnicc.wanted_chars &= ~vnicc;
2210 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2211 return true;
2212}
2213
a45b3faf
HW		 2214/* (re-)initialize VNICC */
2215static void qeth_l2_vnicc_init(struct qeth_card *card)
2216{
349d13d5 2217 u32 *timeout = &card->options.vnicc.learning_timeout;
b528965b 2218 bool enable, error = false;
caa1f0b1
HW		 2219 unsigned int chars_len, i;
2220 unsigned long chars_tmp;
2221 u32 sup_cmds, vnicc;
caa1f0b1 2222
a45b3faf 2223 QETH_CARD_TEXT(card, 2, "vniccini");
caa1f0b1
HW		 2224 /* reset rx_bcast */
2225 card->options.vnicc.rx_bcast_enabled = 0;
a45b3faf
HW		 2226 /* initial query and storage of VNIC characteristics */
2227 if (qeth_l2_vnicc_query_chars(card)) {
349d13d5
HW		 2228 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2229 *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
caa1f0b1
HW		 2230 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2231 /* fail quietly if user didn't change the default config */
a45b3faf
HW		 2232 card->options.vnicc.sup_chars = 0;
2233 card->options.vnicc.cur_chars = 0;
caa1f0b1
HW		 2234 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2235 return;
a45b3faf 2236 }
caa1f0b1
HW		 2237 /* get supported commands for each supported characteristic */
2238 chars_tmp = card->options.vnicc.sup_chars;
2239 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2240 for_each_set_bit(i, &chars_tmp, chars_len) {
2241 vnicc = BIT(i);
b528965b
AW		 2242 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) {
2243 sup_cmds = 0;
2244 error = true;
2245 }
be40a86c
AW		 2246 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) &&
2247 (sup_cmds & IPA_VNICC_GET_TIMEOUT))
2248 card->options.vnicc.getset_timeout_sup |= vnicc;
2249 else
349d13d5 2250 card->options.vnicc.getset_timeout_sup &= ~vnicc;
be40a86c
AW		 2251 if ((sup_cmds & IPA_VNICC_ENABLE) &&
2252 (sup_cmds & IPA_VNICC_DISABLE))
2253 card->options.vnicc.set_char_sup |= vnicc;
2254 else
caa1f0b1
HW		 2255 card->options.vnicc.set_char_sup &= ~vnicc;
2256 }
2257 /* enforce assumed default values and recover settings, if changed */
b528965b
AW		 2258 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2259 timeout);
d1b9ae18
AW		 2260 /* Change chars, if necessary */
2261 chars_tmp = card->options.vnicc.wanted_chars ^
2262 card->options.vnicc.cur_chars;
caa1f0b1
HW		 2263 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2264 for_each_set_bit(i, &chars_tmp, chars_len) {
2265 vnicc = BIT(i);
2266 enable = card->options.vnicc.wanted_chars & vnicc;
2267 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2268 }
2269 if (error)
2270 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2271}
2272
2273/* configure default values of VNIC characteristics */
2274static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2275{
2276 /* characteristics values */
2277 card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2278 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
349d13d5 2279 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
caa1f0b1
HW		 2280 /* supported commands */
2281 card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
349d13d5 2282 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
caa1f0b1
HW		 2283 /* settings wanted by users */
2284 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
a45b3faf
HW		 2285}
2286
58fa3575
JW		 2287static const struct device_type qeth_l2_devtype = {
2288 .name = "qeth_layer2",
2289 .groups = qeth_l2_attr_groups,
2290};
2291
2292static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
2293{
2294 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2295 int rc;
2296
58fa3575
JW		 2297 qeth_l2_vnicc_set_defaults(card);
2298 mutex_init(&card->sbp_lock);
2299
ae57ea7a 2300 if (gdev->dev.type) {
0b8da811 2301 rc = device_add_groups(&gdev->dev, qeth_l2_attr_groups);
58fa3575
JW		 2302 if (rc)
2303 return rc;
ae57ea7a
JW		 2304 } else {
2305 gdev->dev.type = &qeth_l2_devtype;
58fa3575
JW		 2306 }
2307
2308 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work);
2309 return 0;
2310}
2311
2312static void qeth_l2_remove_device(struct ccwgroup_device *gdev)
2313{
2314 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
60bb1089 2315 struct qeth_priv *priv;
58fa3575 2316
ae57ea7a 2317 if (gdev->dev.type != &qeth_l2_devtype)
0b8da811 2318 device_remove_groups(&gdev->dev, qeth_l2_attr_groups);
ae57ea7a 2319
58fa3575
JW		 2320 qeth_set_allowed_threads(card, 0, 1);
2321 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2322
b41b554c 2323 if (gdev->state == CCWGROUP_ONLINE)
0b9902c1 2324 qeth_set_offline(card, card->discipline, false);
58fa3575 2325
60bb1089
AW		 2326 if (card->dev->reg_state == NETREG_REGISTERED) {
2327 priv = netdev_priv(card->dev);
2328 if (priv->brport_features & BR_LEARNING_SYNC) {
2329 rtnl_lock();
2330 qeth_l2_br2dev_put();
2331 rtnl_unlock();
2332 }
58fa3575 2333 unregister_netdev(card->dev);
60bb1089 2334 }
58fa3575
JW		 2335}
2336
2337static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok)
2338{
2339 struct net_device *dev = card->dev;
2340 int rc = 0;
2341
58fa3575
JW		 2342 qeth_l2_detect_dev2br_support(card);
2343
2344 mutex_lock(&card->sbp_lock);
2345 qeth_bridgeport_query_support(card);
2346 if (card->options.sbp.supported_funcs) {
2347 qeth_l2_setup_bridgeport_attrs(card);
2348 dev_info(&card->gdev->dev,
2349 "The device represents a Bridge Capable Port\n");
2350 }
2351 mutex_unlock(&card->sbp_lock);
2352
2353 qeth_l2_register_dev_addr(card);
2354
2355 /* for the rx_bcast characteristic, init VNICC after setmac */
2356 qeth_l2_vnicc_init(card);
2357
2358 qeth_l2_trace_features(card);
2359
2360 /* softsetup */
2361 QETH_CARD_TEXT(card, 2, "softsetp");
2362
2363 card->state = CARD_STATE_SOFTSETUP;
2364
2365 qeth_set_allowed_threads(card, 0xffffffff, 0);
2366
2367 if (dev->reg_state != NETREG_REGISTERED) {
2368 rc = qeth_l2_setup_netdev(card);
2369 if (rc)
2370 goto err_setup;
2371
2372 if (carrier_ok)
2373 netif_carrier_on(dev);
2374 } else {
2375 rtnl_lock();
bb5ab541
JW		 2376 rc = qeth_set_real_num_tx_queues(card,
2377 qeth_tx_actual_queues(card));
2378 if (rc) {
2379 rtnl_unlock();
2380 goto err_set_queues;
2381 }
2382
58fa3575
JW		 2383 if (carrier_ok)
2384 netif_carrier_on(dev);
2385 else
2386 netif_carrier_off(dev);
2387
2388 netif_device_attach(dev);
2389 qeth_enable_hw_features(dev);
2390 qeth_l2_enable_brport_features(card);
2391
1cfef80d
AW		 2392 if (netif_running(dev)) {
2393 local_bh_disable();
2394 napi_schedule(&card->napi);
2395 /* kick-start the NAPI softirq: */
2396 local_bh_enable();
2397 qeth_l2_set_rx_mode(dev);
58fa3575
JW		 2398 }
2399 rtnl_unlock();
2400 }
2401 return 0;
2402
bb5ab541 2403err_set_queues:
58fa3575
JW		 2404err_setup:
2405 qeth_set_allowed_threads(card, 0, 1);
2406 card->state = CARD_STATE_DOWN;
2407 return rc;
2408}
2409
2410static void qeth_l2_set_offline(struct qeth_card *card)
2411{
2412 struct qeth_priv *priv = netdev_priv(card->dev);
2413
2414 qeth_set_allowed_threads(card, 0, 1);
2415 qeth_l2_drain_rx_mode_cache(card);
2416
2417 if (card->state == CARD_STATE_SOFTSETUP)
2418 card->state = CARD_STATE_DOWN;
2419
2420 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
09840f70 2421 if (priv->brport_features & BR_LEARNING_SYNC)
58fa3575 2422 qeth_l2_dev2br_fdb_flush(card);
58fa3575
JW		 2423}
2424
2425/* Returns zero if the command is successfully "consumed" */
2426static int qeth_l2_control_event(struct qeth_card *card,
2427 struct qeth_ipa_cmd *cmd)
2428{
2429 switch (cmd->hdr.command) {
2430 case IPA_CMD_SETBRIDGEPORT_OSA:
2431 case IPA_CMD_SETBRIDGEPORT_IQD:
2432 if (cmd->data.sbp.hdr.command_code ==
2433 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
2434 qeth_bridge_state_change(card, cmd);
2435 return 0;
2436 }
2437
2438 return 1;
2439 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
2440 qeth_addr_change_event(card, cmd);
2441 return 0;
2442 default:
2443 return 1;
2444 }
2445}
2446
50144f67 2447const struct qeth_discipline qeth_l2_discipline = {
58fa3575
JW		 2448 .setup = qeth_l2_probe_device,
2449 .remove = qeth_l2_remove_device,
2450 .set_online = qeth_l2_set_online,
2451 .set_offline = qeth_l2_set_offline,
58fa3575
JW		 2452 .control_event_handler = qeth_l2_control_event,
2453};
2454EXPORT_SYMBOL_GPL(qeth_l2_discipline);
2455
2456static int __init qeth_l2_init(void)
2457{
2458 pr_info("register layer 2 discipline\n");
60bb1089 2459 refcount_set(&qeth_l2_switchdev_notify_refcnt, 0);
58fa3575
JW		 2460 return 0;
2461}
2462
2463static void __exit qeth_l2_exit(void)
2464{
2465 pr_info("unregister layer 2 discipline\n");
2466}
2467
4a71df50
FB		 2468module_init(qeth_l2_init);
2469module_exit(qeth_l2_exit);
2470MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2471MODULE_DESCRIPTION("qeth layer 2 discipline");
2472MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)