1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 *    Copyright IBM Corp. 2007, 2009
   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
  10#define KMSG_COMPONENT "qeth"
  11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  12
  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>
  18#include <linux/slab.h>
  19#include <linux/etherdevice.h>
  20#include <linux/if_bridge.h>
  21#include <linux/list.h>
  22#include <linux/hash.h>
  23#include <linux/hashtable.h>
  24#include <net/switchdev.h>
  25#include <asm/chsc.h>
  26#include <asm/css_chars.h>
  27#include <asm/setup.h>
  28#include "qeth_core.h"
  29#include "qeth_l2.h"
  30
  31static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode)
  32{
  33	int rc;
  34
  35	if (retcode)
  36		QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
  37	switch (retcode) {
  38	case IPA_RC_SUCCESS:
  39		rc = 0;
  40		break;
  41	case IPA_RC_L2_UNSUPPORTED_CMD:
  42		rc = -EOPNOTSUPP;
  43		break;
  44	case IPA_RC_L2_ADDR_TABLE_FULL:
  45		rc = -ENOSPC;
  46		break;
  47	case IPA_RC_L2_DUP_MAC:
  48	case IPA_RC_L2_DUP_LAYER3_MAC:
  49		rc = -EADDRINUSE;
  50		break;
  51	case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
  52	case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
  53		rc = -EADDRNOTAVAIL;
  54		break;
  55	case IPA_RC_L2_MAC_NOT_FOUND:
  56		rc = -ENOENT;
  57		break;
  58	default:
  59		rc = -EIO;
  60		break;
  61	}
  62	return rc;
  63}
  64
  65static int qeth_l2_send_setdelmac_cb(struct qeth_card *card,
  66				     struct qeth_reply *reply,
  67				     unsigned long data)
  68{
  69	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
  70
  71	return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code);
  72}
  73
  74static int qeth_l2_send_setdelmac(struct qeth_card *card, const __u8 *mac,
  75			   enum qeth_ipa_cmds ipacmd)
  76{
  77	struct qeth_ipa_cmd *cmd;
  78	struct qeth_cmd_buffer *iob;
  79
  80	QETH_CARD_TEXT(card, 2, "L2sdmac");
  81	iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
  82				 IPA_DATA_SIZEOF(setdelmac));
  83	if (!iob)
  84		return -ENOMEM;
  85	cmd = __ipa_cmd(iob);
  86	cmd->data.setdelmac.mac_length = ETH_ALEN;
  87	ether_addr_copy(cmd->data.setdelmac.mac, mac);
  88	return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelmac_cb, NULL);
  89}
  90
  91static int qeth_l2_send_setmac(struct qeth_card *card, const __u8 *mac)
  92{
  93	int rc;
  94
  95	QETH_CARD_TEXT(card, 2, "L2Setmac");
  96	rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
  97	if (rc == 0) {
  98		dev_info(&card->gdev->dev,
  99			 "MAC address %pM successfully registered\n", mac);
 100	} else {
 101		switch (rc) {
 102		case -EADDRINUSE:
 103			dev_warn(&card->gdev->dev,
 104				"MAC address %pM already exists\n", mac);
 105			break;
 106		case -EADDRNOTAVAIL:
 107			dev_warn(&card->gdev->dev,
 108				"MAC address %pM is not authorized\n", mac);
 109			break;
 110		}
 111	}
 112	return rc;
 113}
 114
 115static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
 116{
 117	enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
 118					IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
 119	int rc;
 120
 121	QETH_CARD_TEXT(card, 2, "L2Wmac");
 122	rc = qeth_l2_send_setdelmac(card, mac, cmd);
 123	if (rc == -EADDRINUSE)
 124		QETH_DBF_MESSAGE(2, "MAC address %012llx is already registered on device %x\n",
 125				 ether_addr_to_u64(mac), CARD_DEVID(card));
 126	else if (rc)
 127		QETH_DBF_MESSAGE(2, "Failed to register MAC address %012llx on device %x: %d\n",
 128				 ether_addr_to_u64(mac), CARD_DEVID(card), rc);
 129	return rc;
 130}
 131
 132static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
 133{
 134	enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
 135					IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
 136	int rc;
 137
 138	QETH_CARD_TEXT(card, 2, "L2Rmac");
 139	rc = qeth_l2_send_setdelmac(card, mac, cmd);
 140	if (rc)
 141		QETH_DBF_MESSAGE(2, "Failed to delete MAC address %012llx on device %x: %d\n",
 142				 ether_addr_to_u64(mac), CARD_DEVID(card), rc);
 143	return rc;
 144}
 145
 146static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card)
 147{
 148	struct qeth_mac *mac;
 149	struct hlist_node *tmp;
 150	int i;
 151
 152	hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) {
 153		hash_del(&mac->hnode);
 154		kfree(mac);
 155	}
 156}
 157
 158static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue,
 159				struct qeth_hdr *hdr, struct sk_buff *skb,
 160				__be16 proto, unsigned int data_len)
 161{
 162	int cast_type = qeth_get_ether_cast_type(skb);
 163	struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
 164
 165	hdr->hdr.l2.pkt_length = data_len;
 166
 167	if (skb_is_gso(skb)) {
 168		hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO;
 169	} else {
 170		hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
 171		if (skb->ip_summed == CHECKSUM_PARTIAL)
 172			qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], proto);
 173	}
 174
 175	/* set byte byte 3 to casting flags */
 176	if (cast_type == RTN_MULTICAST)
 177		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 178	else if (cast_type == RTN_BROADCAST)
 179		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 180	else
 181		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 182
 183	/* VSWITCH relies on the VLAN
 184	 * information to be present in
 185	 * the QDIO header */
 186	if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
 187		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
 188		hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
 189	}
 190}
 191
 192static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode)
 193{
 194	if (retcode)
 195		QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
 196
 197	switch (retcode) {
 198	case IPA_RC_SUCCESS:
 199		return 0;
 200	case IPA_RC_L2_INVALID_VLAN_ID:
 201		return -EINVAL;
 202	case IPA_RC_L2_DUP_VLAN_ID:
 203		return -EEXIST;
 204	case IPA_RC_L2_VLAN_ID_NOT_FOUND:
 205		return -ENOENT;
 206	case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
 207		return -EPERM;
 208	default:
 209		return -EIO;
 210	}
 211}
 212
 213static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
 214				      struct qeth_reply *reply,
 215				      unsigned long data)
 216{
 217	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
 218
 219	QETH_CARD_TEXT(card, 2, "L2sdvcb");
 220	if (cmd->hdr.return_code) {
 221		QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n",
 222				 cmd->data.setdelvlan.vlan_id,
 223				 CARD_DEVID(card), cmd->hdr.return_code);
 224		QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
 225	}
 226	return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code);
 227}
 228
 229static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
 230				   enum qeth_ipa_cmds ipacmd)
 231{
 232	struct qeth_ipa_cmd *cmd;
 233	struct qeth_cmd_buffer *iob;
 234
 235	QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
 236	iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
 237				 IPA_DATA_SIZEOF(setdelvlan));
 238	if (!iob)
 239		return -ENOMEM;
 240	cmd = __ipa_cmd(iob);
 241	cmd->data.setdelvlan.vlan_id = i;
 242	return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelvlan_cb, NULL);
 243}
 244
 245static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
 246				   __be16 proto, u16 vid)
 247{
 248	struct qeth_card *card = dev->ml_priv;
 249
 250	QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
 251	if (!vid)
 252		return 0;
 253
 254	return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
 255}
 256
 257static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
 258				    __be16 proto, u16 vid)
 259{
 260	struct qeth_card *card = dev->ml_priv;
 261
 262	QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
 263	if (!vid)
 264		return 0;
 265
 266	return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
 267}
 268
 269static void qeth_l2_set_pnso_mode(struct qeth_card *card,
 270				  enum qeth_pnso_mode mode)
 271{
 272	spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 273	WRITE_ONCE(card->info.pnso_mode, mode);
 274	spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 275
 276	if (mode == QETH_PNSO_NONE)
 277		drain_workqueue(card->event_wq);
 278}
 279
 280static void qeth_l2_dev2br_fdb_flush(struct qeth_card *card)
 281{
 282	struct switchdev_notifier_fdb_info info = {};
 283
 284	QETH_CARD_TEXT(card, 2, "fdbflush");
 285
 286	info.addr = NULL;
 287	/* flush all VLANs: */
 288	info.vid = 0;
 289	info.added_by_user = false;
 290	info.offloaded = true;
 291
 292	call_switchdev_notifiers(SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
 293				 card->dev, &info.info, NULL);
 294}
 295
 296static int qeth_l2_request_initial_mac(struct qeth_card *card)
 297{
 298	int rc = 0;
 299
 300	QETH_CARD_TEXT(card, 2, "l2reqmac");
 301
 302	if (MACHINE_IS_VM) {
 303		rc = qeth_vm_request_mac(card);
 304		if (!rc)
 305			goto out;
 306		QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n",
 307				 CARD_DEVID(card), rc);
 308		QETH_CARD_TEXT_(card, 2, "err%04x", rc);
 309		/* fall back to alternative mechanism: */
 310	}
 311
 312	rc = qeth_setadpparms_change_macaddr(card);
 313	if (!rc)
 314		goto out;
 315	QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n",
 316			 CARD_DEVID(card), rc);
 317	QETH_CARD_TEXT_(card, 2, "1err%04x", rc);
 
 
 
 318
 319	/* Fall back once more, but some devices don't support a custom MAC
 320	 * address:
 321	 */
 322	if (IS_OSM(card) || IS_OSX(card))
 323		return (rc) ? rc : -EADDRNOTAVAIL;
 324	eth_hw_addr_random(card->dev);
 325
 326out:
 327	QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len);
 328	return 0;
 329}
 330
 331static void qeth_l2_register_dev_addr(struct qeth_card *card)
 332{
 333	if (!is_valid_ether_addr(card->dev->dev_addr))
 334		qeth_l2_request_initial_mac(card);
 335
 336	if (!qeth_l2_send_setmac(card, card->dev->dev_addr))
 337		card->info.dev_addr_is_registered = 1;
 338	else
 339		card->info.dev_addr_is_registered = 0;
 340}
 341
 342static int qeth_l2_validate_addr(struct net_device *dev)
 343{
 344	struct qeth_card *card = dev->ml_priv;
 345
 346	if (card->info.dev_addr_is_registered)
 347		return eth_validate_addr(dev);
 348
 349	QETH_CARD_TEXT(card, 4, "nomacadr");
 350	return -EPERM;
 351}
 352
 353static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 354{
 355	struct sockaddr *addr = p;
 356	struct qeth_card *card = dev->ml_priv;
 357	u8 old_addr[ETH_ALEN];
 358	int rc = 0;
 359
 360	QETH_CARD_TEXT(card, 3, "setmac");
 361
 362	if (IS_OSM(card) || IS_OSX(card)) {
 363		QETH_CARD_TEXT(card, 3, "setmcTYP");
 364		return -EOPNOTSUPP;
 365	}
 366	QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN);
 367	if (!is_valid_ether_addr(addr->sa_data))
 368		return -EADDRNOTAVAIL;
 369
 370	/* don't register the same address twice */
 371	if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) &&
 372	    card->info.dev_addr_is_registered)
 373		return 0;
 374
 375	/* add the new address, switch over, drop the old */
 376	rc = qeth_l2_send_setmac(card, addr->sa_data);
 377	if (rc)
 378		return rc;
 379	ether_addr_copy(old_addr, dev->dev_addr);
 380	eth_hw_addr_set(dev, addr->sa_data);
 381
 382	if (card->info.dev_addr_is_registered)
 383		qeth_l2_remove_mac(card, old_addr);
 384	card->info.dev_addr_is_registered = 1;
 385	return 0;
 386}
 387
 388static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable)
 389{
 390	int role;
 391	int rc;
 392
 393	QETH_CARD_TEXT(card, 3, "pmisc2br");
 394
 395	if (enable) {
 396		if (card->options.sbp.reflect_promisc_primary)
 397			role = QETH_SBP_ROLE_PRIMARY;
 398		else
 399			role = QETH_SBP_ROLE_SECONDARY;
 400	} else
 401		role = QETH_SBP_ROLE_NONE;
 402
 403	rc = qeth_bridgeport_setrole(card, role);
 404	QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc);
 405	if (!rc) {
 406		card->options.sbp.role = role;
 407		card->info.promisc_mode = enable;
 408	}
 409}
 410
 411static void qeth_l2_set_promisc_mode(struct qeth_card *card)
 412{
 413	bool enable = card->dev->flags & IFF_PROMISC;
 414
 415	if (card->info.promisc_mode == enable)
 416		return;
 417
 418	if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) {
 419		qeth_setadp_promisc_mode(card, enable);
 420	} else {
 421		mutex_lock(&card->sbp_lock);
 422		if (card->options.sbp.reflect_promisc)
 423			qeth_l2_promisc_to_bridge(card, enable);
 424		mutex_unlock(&card->sbp_lock);
 425	}
 426}
 427
 428/* New MAC address is added to the hash table and marked to be written on card
 429 * only if there is not in the hash table storage already
 430 *
 431*/
 432static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha)
 433{
 434	u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
 435	struct qeth_mac *mac;
 436
 437	hash_for_each_possible(card->rx_mode_addrs, mac, hnode, mac_hash) {
 438		if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) {
 439			mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 440			return;
 441		}
 442	}
 443
 444	mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
 445	if (!mac)
 446		return;
 447
 448	ether_addr_copy(mac->mac_addr, ha->addr);
 449	mac->disp_flag = QETH_DISP_ADDR_ADD;
 450
 451	hash_add(card->rx_mode_addrs, &mac->hnode, mac_hash);
 452}
 453
 454static void qeth_l2_rx_mode_work(struct work_struct *work)
 455{
 456	struct qeth_card *card = container_of(work, struct qeth_card,
 457					      rx_mode_work);
 458	struct net_device *dev = card->dev;
 459	struct netdev_hw_addr *ha;
 460	struct qeth_mac *mac;
 461	struct hlist_node *tmp;
 462	int i;
 463	int rc;
 464
 465	QETH_CARD_TEXT(card, 3, "setmulti");
 466
 467	netif_addr_lock_bh(dev);
 468	netdev_for_each_mc_addr(ha, dev)
 469		qeth_l2_add_mac(card, ha);
 470	netdev_for_each_uc_addr(ha, dev)
 471		qeth_l2_add_mac(card, ha);
 472	netif_addr_unlock_bh(dev);
 473
 474	hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) {
 475		switch (mac->disp_flag) {
 476		case QETH_DISP_ADDR_DELETE:
 477			qeth_l2_remove_mac(card, mac->mac_addr);
 478			hash_del(&mac->hnode);
 479			kfree(mac);
 480			break;
 481		case QETH_DISP_ADDR_ADD:
 482			rc = qeth_l2_write_mac(card, mac->mac_addr);
 483			if (rc) {
 484				hash_del(&mac->hnode);
 485				kfree(mac);
 486				break;
 487			}
 488			fallthrough;
 489		default:
 490			/* for next call to set_rx_mode(): */
 491			mac->disp_flag = QETH_DISP_ADDR_DELETE;
 492		}
 493	}
 494
 495	qeth_l2_set_promisc_mode(card);
 496}
 497
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 498static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
 499					   struct net_device *dev)
 500{
 501	struct qeth_card *card = dev->ml_priv;
 502	u16 txq = skb_get_queue_mapping(skb);
 503	struct qeth_qdio_out_q *queue;
 504	int rc;
 505
 506	if (!skb_is_gso(skb))
 507		qdisc_skb_cb(skb)->pkt_len = skb->len;
 508	if (IS_IQD(card))
 509		txq = qeth_iqd_translate_txq(dev, txq);
 510	queue = card->qdio.out_qs[txq];
 511
 512	rc = qeth_xmit(card, skb, queue, vlan_get_protocol(skb),
 513		       qeth_l2_fill_header);
 
 
 
 
 514	if (!rc)
 515		return NETDEV_TX_OK;
 516
 517	QETH_TXQ_STAT_INC(queue, tx_dropped);
 518	kfree_skb(skb);
 519	return NETDEV_TX_OK;
 520}
 521
 522static u16 qeth_l2_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
 523				    struct net_device *sb_dev)
 524{
 525	return qeth_iqd_select_queue(dev, skb, qeth_get_ether_cast_type(skb),
 526				     sb_dev);
 
 
 
 
 
 
 
 
 527}
 528
 529static void qeth_l2_set_rx_mode(struct net_device *dev)
 530{
 531	struct qeth_card *card = dev->ml_priv;
 532
 533	schedule_work(&card->rx_mode_work);
 534}
 535
 536/**
 537 *	qeth_l2_pnso() - perform network subchannel operation
 538 *	@card: qeth_card structure pointer
 539 *	@oc: Operation Code
 540 *	@cnc: Boolean Change-Notification Control
 541 *	@cb: Callback function will be executed for each element
 542 *		of the address list
 543 *	@priv: Pointer to pass to the callback function.
 544 *
 545 *	Collects network information in a network address list and calls the
 546 *	callback function for every entry in the list. If "change-notification-
 547 *	control" is set, further changes in the address list will be reported
 548 *	via the IPA command.
 549 */
 550static int qeth_l2_pnso(struct qeth_card *card, u8 oc, int cnc,
 551			void (*cb)(void *priv, struct chsc_pnso_naid_l2 *entry),
 552			void *priv)
 553{
 554	struct ccw_device *ddev = CARD_DDEV(card);
 555	struct chsc_pnso_area *rr;
 556	u32 prev_instance = 0;
 557	int isfirstblock = 1;
 558	int i, size, elems;
 559	int rc;
 560
 561	rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL);
 562	if (rr == NULL)
 563		return -ENOMEM;
 564	do {
 565		QETH_CARD_TEXT(card, 2, "PNSO");
 566		/* on the first iteration, naihdr.resume_token will be zero */
 567		rc = ccw_device_pnso(ddev, rr, oc, rr->naihdr.resume_token,
 568				     cnc);
 569		if (rc)
 570			continue;
 571		if (cb == NULL)
 572			continue;
 573
 574		size = rr->naihdr.naids;
 575		if (size != sizeof(struct chsc_pnso_naid_l2)) {
 576			WARN_ON_ONCE(1);
 577			continue;
 578		}
 579
 580		elems = (rr->response.length - sizeof(struct chsc_header) -
 581			 sizeof(struct chsc_pnso_naihdr)) / size;
 582
 583		if (!isfirstblock && (rr->naihdr.instance != prev_instance)) {
 584			/* Inform the caller that they need to scrap */
 585			/* the data that was already reported via cb */
 586			rc = -EAGAIN;
 587			break;
 588		}
 589		isfirstblock = 0;
 590		prev_instance = rr->naihdr.instance;
 591		for (i = 0; i < elems; i++)
 592			(*cb)(priv, &rr->entries[i]);
 593	} while ((rc == -EBUSY) || (!rc && /* list stored */
 594		   /* resume token is non-zero => list incomplete */
 595		   (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2)));
 596
 597	if (rc)
 598		QETH_CARD_TEXT_(card, 2, "PNrp%04x", rr->response.code);
 599
 600	free_page((unsigned long)rr);
 601	return rc;
 602}
 603
 604static bool qeth_is_my_net_if_token(struct qeth_card *card,
 605				    struct net_if_token *token)
 606{
 607	return ((card->info.ddev_devno == token->devnum) &&
 608		(card->info.cssid == token->cssid) &&
 609		(card->info.iid == token->iid) &&
 610		(card->info.ssid == token->ssid) &&
 611		(card->info.chpid == token->chpid) &&
 612		(card->info.chid == token->chid));
 613}
 614
 615/**
 616 *	qeth_l2_dev2br_fdb_notify() - update fdb of master bridge
 617 *	@card:	qeth_card structure pointer
 618 *	@code:	event bitmask: high order bit 0x80 set to
 619 *				1 - removal of an object
 620 *				0 - addition of an object
 621 *			       Object type(s):
 622 *				0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC
 623 *	@token: "network token" structure identifying 'physical' location
 624 *		of the target
 625 *	@addr_lnid: structure with MAC address and VLAN ID of the target
 626 */
 627static void qeth_l2_dev2br_fdb_notify(struct qeth_card *card, u8 code,
 628				      struct net_if_token *token,
 629				      struct mac_addr_lnid *addr_lnid)
 630{
 631	struct switchdev_notifier_fdb_info info = {};
 632	u8 ntfy_mac[ETH_ALEN];
 633
 634	ether_addr_copy(ntfy_mac, addr_lnid->mac);
 635	/* Ignore VLAN only changes */
 636	if (!(code & IPA_ADDR_CHANGE_CODE_MACADDR))
 637		return;
 638	/* Ignore mcast entries */
 639	if (is_multicast_ether_addr(ntfy_mac))
 640		return;
 641	/* Ignore my own addresses */
 642	if (qeth_is_my_net_if_token(card, token))
 643		return;
 644
 645	info.addr = ntfy_mac;
 646	/* don't report VLAN IDs */
 647	info.vid = 0;
 648	info.added_by_user = false;
 649	info.offloaded = true;
 650
 651	if (code & IPA_ADDR_CHANGE_CODE_REMOVAL) {
 652		call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE,
 653					 card->dev, &info.info, NULL);
 654		QETH_CARD_TEXT(card, 4, "andelmac");
 655		QETH_CARD_TEXT_(card, 4,
 656				"mc%012llx", ether_addr_to_u64(ntfy_mac));
 657	} else {
 658		call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE,
 659					 card->dev, &info.info, NULL);
 660		QETH_CARD_TEXT(card, 4, "anaddmac");
 661		QETH_CARD_TEXT_(card, 4,
 662				"mc%012llx", ether_addr_to_u64(ntfy_mac));
 663	}
 664}
 665
 666static void qeth_l2_dev2br_an_set_cb(void *priv,
 667				     struct chsc_pnso_naid_l2 *entry)
 668{
 669	u8 code = IPA_ADDR_CHANGE_CODE_MACADDR;
 670	struct qeth_card *card = priv;
 671
 672	if (entry->addr_lnid.lnid < VLAN_N_VID)
 673		code |= IPA_ADDR_CHANGE_CODE_VLANID;
 674	qeth_l2_dev2br_fdb_notify(card, code,
 675				  (struct net_if_token *)&entry->nit,
 676				  (struct mac_addr_lnid *)&entry->addr_lnid);
 677}
 678
 679/**
 680 *	qeth_l2_dev2br_an_set() -
 681 *	Enable or disable 'dev to bridge network address notification'
 682 *	@card: qeth_card structure pointer
 683 *	@enable: Enable or disable 'dev to bridge network address notification'
 684 *
 685 *	Returns negative errno-compatible error indication or 0 on success.
 686 *
 687 *	On enable, emits a series of address notifications for all
 688 *	currently registered hosts.
 689 */
 690static int qeth_l2_dev2br_an_set(struct qeth_card *card, bool enable)
 691{
 692	int rc;
 693
 694	if (enable) {
 695		QETH_CARD_TEXT(card, 2, "anseton");
 696		rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 1,
 697				  qeth_l2_dev2br_an_set_cb, card);
 698		if (rc == -EAGAIN)
 699			/* address notification enabled, but inconsistent
 700			 * addresses reported -> disable address notification
 701			 */
 702			qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0,
 703				     NULL, NULL);
 704	} else {
 705		QETH_CARD_TEXT(card, 2, "ansetoff");
 706		rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL);
 707	}
 708
 709	return rc;
 710}
 711
 712struct qeth_l2_br2dev_event_work {
 713	struct work_struct work;
 714	struct net_device *br_dev;
 715	struct net_device *lsync_dev;
 716	struct net_device *dst_dev;
 717	unsigned long event;
 718	unsigned char addr[ETH_ALEN];
 719};
 720
 721static const struct net_device_ops qeth_l2_iqd_netdev_ops;
 722static const struct net_device_ops qeth_l2_osa_netdev_ops;
 723
 724static bool qeth_l2_must_learn(struct net_device *netdev,
 725			       struct net_device *dstdev)
 726{
 727	struct qeth_priv *priv;
 728
 729	priv = netdev_priv(netdev);
 730	return (netdev != dstdev &&
 731		(priv->brport_features & BR_LEARNING_SYNC) &&
 732		!(br_port_flag_is_set(netdev, BR_ISOLATED) &&
 733		  br_port_flag_is_set(dstdev, BR_ISOLATED)) &&
 734		(netdev->netdev_ops == &qeth_l2_iqd_netdev_ops ||
 735		 netdev->netdev_ops == &qeth_l2_osa_netdev_ops));
 736}
 737
 738/**
 739 *	qeth_l2_br2dev_worker() - update local MACs
 740 *	@work: bridge to device FDB update
 741 *
 742 *	Update local MACs of a learning_sync bridgeport so it can receive
 743 *	messages for a destination port.
 744 *	In case of an isolated learning_sync port, also update its isolated
 745 *	siblings.
 746 */
 747static void qeth_l2_br2dev_worker(struct work_struct *work)
 748{
 749	struct qeth_l2_br2dev_event_work *br2dev_event_work =
 750		container_of(work, struct qeth_l2_br2dev_event_work, work);
 751	struct net_device *lsyncdev = br2dev_event_work->lsync_dev;
 752	struct net_device *dstdev = br2dev_event_work->dst_dev;
 753	struct net_device *brdev = br2dev_event_work->br_dev;
 754	unsigned long event = br2dev_event_work->event;
 755	unsigned char *addr = br2dev_event_work->addr;
 756	struct qeth_card *card = lsyncdev->ml_priv;
 757	struct net_device *lowerdev;
 758	struct list_head *iter;
 759	int err = 0;
 760
 761	QETH_CARD_TEXT_(card, 4, "b2dw%04lx", event);
 762	QETH_CARD_TEXT_(card, 4, "ma%012llx", ether_addr_to_u64(addr));
 763
 764	rcu_read_lock();
 765	/* Verify preconditions are still valid: */
 766	if (!netif_is_bridge_port(lsyncdev) ||
 767	    brdev != netdev_master_upper_dev_get_rcu(lsyncdev))
 768		goto unlock;
 769	if (!qeth_l2_must_learn(lsyncdev, dstdev))
 770		goto unlock;
 771
 772	if (br_port_flag_is_set(lsyncdev, BR_ISOLATED)) {
 773		/* Update lsyncdev and its isolated sibling(s): */
 774		iter = &brdev->adj_list.lower;
 775		lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
 776		while (lowerdev) {
 777			if (br_port_flag_is_set(lowerdev, BR_ISOLATED)) {
 778				switch (event) {
 779				case SWITCHDEV_FDB_ADD_TO_DEVICE:
 780					err = dev_uc_add(lowerdev, addr);
 781					break;
 782				case SWITCHDEV_FDB_DEL_TO_DEVICE:
 783					err = dev_uc_del(lowerdev, addr);
 784					break;
 785				default:
 786					break;
 787				}
 788				if (err) {
 789					QETH_CARD_TEXT(card, 2, "b2derris");
 790					QETH_CARD_TEXT_(card, 2,
 791							"err%02lx%03d", event,
 792							lowerdev->ifindex);
 793				}
 794			}
 795			lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
 796		}
 797	} else {
 798		switch (event) {
 799		case SWITCHDEV_FDB_ADD_TO_DEVICE:
 800			err = dev_uc_add(lsyncdev, addr);
 801			break;
 802		case SWITCHDEV_FDB_DEL_TO_DEVICE:
 803			err = dev_uc_del(lsyncdev, addr);
 804			break;
 805		default:
 806			break;
 807		}
 808		if (err)
 809			QETH_CARD_TEXT_(card, 2, "b2derr%02lx", event);
 810	}
 811
 812unlock:
 813	rcu_read_unlock();
 814	dev_put(brdev);
 815	dev_put(lsyncdev);
 816	dev_put(dstdev);
 817	kfree(br2dev_event_work);
 818}
 819
 820static int qeth_l2_br2dev_queue_work(struct net_device *brdev,
 821				     struct net_device *lsyncdev,
 822				     struct net_device *dstdev,
 823				     unsigned long event,
 824				     const unsigned char *addr)
 825{
 826	struct qeth_l2_br2dev_event_work *worker_data;
 827	struct qeth_card *card;
 828
 829	worker_data = kzalloc(sizeof(*worker_data), GFP_ATOMIC);
 830	if (!worker_data)
 831		return -ENOMEM;
 832	INIT_WORK(&worker_data->work, qeth_l2_br2dev_worker);
 833	worker_data->br_dev = brdev;
 834	worker_data->lsync_dev = lsyncdev;
 835	worker_data->dst_dev = dstdev;
 836	worker_data->event = event;
 837	ether_addr_copy(worker_data->addr, addr);
 838
 839	card = lsyncdev->ml_priv;
 840	/* Take a reference on the sw port devices and the bridge */
 841	dev_hold(brdev);
 842	dev_hold(lsyncdev);
 843	dev_hold(dstdev);
 844	queue_work(card->event_wq, &worker_data->work);
 845	return 0;
 846}
 847
 848/* Called under rtnl_lock */
 849static int qeth_l2_switchdev_event(struct notifier_block *unused,
 850				   unsigned long event, void *ptr)
 851{
 852	struct net_device *dstdev, *brdev, *lowerdev;
 853	struct switchdev_notifier_fdb_info *fdb_info;
 854	struct switchdev_notifier_info *info = ptr;
 855	struct list_head *iter;
 856	struct qeth_card *card;
 857	int rc;
 858
 859	if (!(event == SWITCHDEV_FDB_ADD_TO_DEVICE ||
 860	      event == SWITCHDEV_FDB_DEL_TO_DEVICE))
 861		return NOTIFY_DONE;
 862
 863	dstdev = switchdev_notifier_info_to_dev(info);
 864	brdev = netdev_master_upper_dev_get_rcu(dstdev);
 865	if (!brdev || !netif_is_bridge_master(brdev))
 866		return NOTIFY_DONE;
 867	fdb_info = container_of(info,
 868				struct switchdev_notifier_fdb_info,
 869				info);
 870	iter = &brdev->adj_list.lower;
 871	lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
 872	while (lowerdev) {
 873		if (qeth_l2_must_learn(lowerdev, dstdev)) {
 874			card = lowerdev->ml_priv;
 875			QETH_CARD_TEXT_(card, 4, "b2dqw%03lx", event);
 876			rc = qeth_l2_br2dev_queue_work(brdev, lowerdev,
 877						       dstdev, event,
 878						       fdb_info->addr);
 879			if (rc) {
 880				QETH_CARD_TEXT(card, 2, "b2dqwerr");
 881				return NOTIFY_BAD;
 882			}
 883		}
 884		lowerdev = netdev_next_lower_dev_rcu(brdev, &iter);
 885	}
 886	return NOTIFY_DONE;
 887}
 888
 889static struct notifier_block qeth_l2_sw_notifier = {
 890		.notifier_call = qeth_l2_switchdev_event,
 891};
 892
 893static refcount_t qeth_l2_switchdev_notify_refcnt;
 894
 895/* Called under rtnl_lock */
 896static void qeth_l2_br2dev_get(void)
 897{
 898	int rc;
 899
 900	if (!refcount_inc_not_zero(&qeth_l2_switchdev_notify_refcnt)) {
 901		rc = register_switchdev_notifier(&qeth_l2_sw_notifier);
 902		if (rc) {
 903			QETH_DBF_MESSAGE(2,
 904					 "failed to register qeth_l2_sw_notifier: %d\n",
 905					 rc);
 906		} else {
 907			refcount_set(&qeth_l2_switchdev_notify_refcnt, 1);
 908			QETH_DBF_MESSAGE(2, "qeth_l2_sw_notifier registered\n");
 909		}
 910	}
 911	QETH_DBF_TEXT_(SETUP, 2, "b2d+%04d",
 912		       qeth_l2_switchdev_notify_refcnt.refs.counter);
 913}
 914
 915/* Called under rtnl_lock */
 916static void qeth_l2_br2dev_put(void)
 917{
 918	int rc;
 919
 920	if (refcount_dec_and_test(&qeth_l2_switchdev_notify_refcnt)) {
 921		rc = unregister_switchdev_notifier(&qeth_l2_sw_notifier);
 922		if (rc) {
 923			QETH_DBF_MESSAGE(2,
 924					 "failed to unregister qeth_l2_sw_notifier: %d\n",
 925					 rc);
 926		} else {
 927			QETH_DBF_MESSAGE(2,
 928					 "qeth_l2_sw_notifier unregistered\n");
 929		}
 930	}
 931	QETH_DBF_TEXT_(SETUP, 2, "b2d-%04d",
 932		       qeth_l2_switchdev_notify_refcnt.refs.counter);
 933}
 934
 935static int qeth_l2_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 936				  struct net_device *dev, u32 filter_mask,
 937				  int nlflags)
 938{
 939	struct qeth_priv *priv = netdev_priv(dev);
 940	struct qeth_card *card = dev->ml_priv;
 941	u16 mode = BRIDGE_MODE_UNDEF;
 942
 943	/* Do not even show qeth devs that cannot do bridge_setlink */
 944	if (!priv->brport_hw_features || !netif_device_present(dev) ||
 945	    qeth_bridgeport_is_in_use(card))
 946		return -EOPNOTSUPP;
 947
 948	return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
 949				       mode, priv->brport_features,
 950				       priv->brport_hw_features,
 951				       nlflags, filter_mask, NULL);
 952}
 953
 954static const struct nla_policy qeth_brport_policy[IFLA_BRPORT_MAX + 1] = {
 955	[IFLA_BRPORT_LEARNING_SYNC]	= { .type = NLA_U8 },
 956};
 957
 958/**
 959 *	qeth_l2_bridge_setlink() - set bridgeport attributes
 960 *	@dev: netdevice
 961 *	@nlh: netlink message header
 962 *	@flags: bridge flags (here: BRIDGE_FLAGS_SELF)
 963 *	@extack: extended ACK report struct
 964 *
 965 *	Called under rtnl_lock
 966 */
 967static int qeth_l2_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
 968				  u16 flags, struct netlink_ext_ack *extack)
 969{
 970	struct qeth_priv *priv = netdev_priv(dev);
 971	struct nlattr *bp_tb[IFLA_BRPORT_MAX + 1];
 972	struct qeth_card *card = dev->ml_priv;
 973	struct nlattr *attr, *nested_attr;
 974	bool enable, has_protinfo = false;
 975	int rem1, rem2;
 976	int rc;
 977
 978	if (!netif_device_present(dev))
 979		return -ENODEV;
 980
 981	nlmsg_for_each_attr(attr, nlh, sizeof(struct ifinfomsg), rem1) {
 982		if (nla_type(attr) == IFLA_PROTINFO) {
 983			rc = nla_parse_nested(bp_tb, IFLA_BRPORT_MAX, attr,
 984					      qeth_brport_policy, extack);
 985			if (rc)
 986				return rc;
 987			has_protinfo = true;
 988		} else if (nla_type(attr) == IFLA_AF_SPEC) {
 989			nla_for_each_nested(nested_attr, attr, rem2) {
 990				if (nla_type(nested_attr) == IFLA_BRIDGE_FLAGS)
 991					continue;
 992				NL_SET_ERR_MSG_ATTR(extack, nested_attr,
 993						    "Unsupported attribute");
 994				return -EINVAL;
 995			}
 996		} else {
 997			NL_SET_ERR_MSG_ATTR(extack, attr, "Unsupported attribute");
 998			return -EINVAL;
 999		}
1000	}
1001	if (!has_protinfo)
1002		return 0;
1003	if (!bp_tb[IFLA_BRPORT_LEARNING_SYNC])
1004		return -EINVAL;
1005	if (!(priv->brport_hw_features & BR_LEARNING_SYNC)) {
1006		NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC],
1007				    "Operation not supported by HW");
1008		return -EOPNOTSUPP;
1009	}
1010	if (!IS_ENABLED(CONFIG_NET_SWITCHDEV)) {
1011		NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC],
1012				    "Requires NET_SWITCHDEV");
1013		return -EOPNOTSUPP;
1014	}
1015	enable = !!nla_get_u8(bp_tb[IFLA_BRPORT_LEARNING_SYNC]);
1016
1017	if (enable == !!(priv->brport_features & BR_LEARNING_SYNC))
1018		return 0;
1019
1020	mutex_lock(&card->sbp_lock);
1021	/* do not change anything if BridgePort is enabled */
1022	if (qeth_bridgeport_is_in_use(card)) {
1023		NL_SET_ERR_MSG(extack, "n/a (BridgePort)");
1024		rc = -EBUSY;
1025	} else if (enable) {
1026		qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1027		rc = qeth_l2_dev2br_an_set(card, true);
1028		if (rc) {
1029			qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1030		} else {
1031			priv->brport_features |= BR_LEARNING_SYNC;
1032			qeth_l2_br2dev_get();
1033		}
1034	} else {
1035		rc = qeth_l2_dev2br_an_set(card, false);
1036		if (!rc) {
1037			qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1038			priv->brport_features ^= BR_LEARNING_SYNC;
1039			qeth_l2_dev2br_fdb_flush(card);
1040			qeth_l2_br2dev_put();
1041		}
1042	}
1043	mutex_unlock(&card->sbp_lock);
1044
1045	return rc;
1046}
1047
1048static const struct net_device_ops qeth_l2_iqd_netdev_ops = {
1049	.ndo_open		= qeth_open,
1050	.ndo_stop		= qeth_stop,
1051	.ndo_get_stats64	= qeth_get_stats64,
1052	.ndo_start_xmit		= qeth_l2_hard_start_xmit,
1053	.ndo_features_check	= qeth_features_check,
1054	.ndo_select_queue	= qeth_l2_iqd_select_queue,
1055	.ndo_validate_addr	= qeth_l2_validate_addr,
1056	.ndo_set_rx_mode	= qeth_l2_set_rx_mode,
1057	.ndo_eth_ioctl		= qeth_do_ioctl,
1058	.ndo_siocdevprivate	= qeth_siocdevprivate,
1059	.ndo_set_mac_address	= qeth_l2_set_mac_address,
1060	.ndo_vlan_rx_add_vid	= qeth_l2_vlan_rx_add_vid,
1061	.ndo_vlan_rx_kill_vid	= qeth_l2_vlan_rx_kill_vid,
1062	.ndo_tx_timeout		= qeth_tx_timeout,
1063	.ndo_fix_features	= qeth_fix_features,
1064	.ndo_set_features	= qeth_set_features,
1065	.ndo_bridge_getlink	= qeth_l2_bridge_getlink,
1066	.ndo_bridge_setlink	= qeth_l2_bridge_setlink,
1067};
1068
1069static const struct net_device_ops qeth_l2_osa_netdev_ops = {
1070	.ndo_open		= qeth_open,
1071	.ndo_stop		= qeth_stop,
1072	.ndo_get_stats64	= qeth_get_stats64,
1073	.ndo_start_xmit		= qeth_l2_hard_start_xmit,
1074	.ndo_features_check	= qeth_features_check,
1075	.ndo_select_queue	= qeth_osa_select_queue,
1076	.ndo_validate_addr	= qeth_l2_validate_addr,
1077	.ndo_set_rx_mode	= qeth_l2_set_rx_mode,
1078	.ndo_eth_ioctl		= qeth_do_ioctl,
1079	.ndo_siocdevprivate	= qeth_siocdevprivate,
1080	.ndo_set_mac_address    = qeth_l2_set_mac_address,
1081	.ndo_vlan_rx_add_vid	= qeth_l2_vlan_rx_add_vid,
1082	.ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
1083	.ndo_tx_timeout		= qeth_tx_timeout,
1084	.ndo_fix_features	= qeth_fix_features,
1085	.ndo_set_features	= qeth_set_features,
1086};
1087
1088static int qeth_l2_setup_netdev(struct qeth_card *card)
1089{
1090	card->dev->netdev_ops = IS_IQD(card) ? &qeth_l2_iqd_netdev_ops :
1091					       &qeth_l2_osa_netdev_ops;
 
 
 
 
1092	card->dev->needed_headroom = sizeof(struct qeth_hdr);
 
1093	card->dev->priv_flags |= IFF_UNICAST_FLT;
1094
1095	if (IS_OSM(card)) {
1096		card->dev->features |= NETIF_F_VLAN_CHALLENGED;
1097	} else {
1098		if (!IS_VM_NIC(card))
1099			card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1100		card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1101	}
1102
1103	if (IS_OSD(card) && !IS_VM_NIC(card)) {
1104		card->dev->features |= NETIF_F_SG;
1105		/* OSA 3S and earlier has no RX/TX support */
1106		if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1107			card->dev->hw_features |= NETIF_F_IP_CSUM;
1108			card->dev->vlan_features |= NETIF_F_IP_CSUM;
1109		}
1110	}
1111	if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1112		card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1113		card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1114	}
1115	if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) ||
1116	    qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) {
1117		card->dev->hw_features |= NETIF_F_RXCSUM;
1118		card->dev->vlan_features |= NETIF_F_RXCSUM;
1119	}
1120	if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1121		card->dev->hw_features |= NETIF_F_TSO;
1122		card->dev->vlan_features |= NETIF_F_TSO;
1123	}
1124	if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1125		card->dev->hw_features |= NETIF_F_TSO6;
1126		card->dev->vlan_features |= NETIF_F_TSO6;
1127	}
1128
1129	if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1130		card->dev->needed_headroom = sizeof(struct qeth_hdr_tso);
1131		netif_keep_dst(card->dev);
1132		netif_set_tso_max_size(card->dev,
1133				       PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1));
1134	}
1135
1136	netif_napi_add(card->dev, &card->napi, qeth_poll);
 
1137	return register_netdev(card->dev);
1138}
1139
1140static void qeth_l2_trace_features(struct qeth_card *card)
1141{
1142	/* Set BridgePort features */
1143	QETH_CARD_TEXT(card, 2, "featuSBP");
1144	QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
1145		      sizeof(card->options.sbp.supported_funcs));
1146	/* VNIC Characteristics features */
1147	QETH_CARD_TEXT(card, 2, "feaVNICC");
1148	QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
1149		      sizeof(card->options.vnicc.sup_chars));
1150}
1151
1152static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card)
1153{
1154	if (!card->options.sbp.reflect_promisc &&
1155	    card->options.sbp.role != QETH_SBP_ROLE_NONE) {
1156		/* Conditional to avoid spurious error messages */
1157		qeth_bridgeport_setrole(card, card->options.sbp.role);
1158		/* Let the callback function refresh the stored role value. */
1159		qeth_bridgeport_query_ports(card, &card->options.sbp.role,
1160					    NULL);
1161	}
1162	if (card->options.sbp.hostnotification) {
1163		if (qeth_bridgeport_an_set(card, 1))
1164			card->options.sbp.hostnotification = 0;
1165	}
1166}
1167
1168/**
1169 *	qeth_l2_detect_dev2br_support() -
1170 *	Detect whether this card supports 'dev to bridge fdb network address
1171 *	change notification' and thus can support the learning_sync bridgeport
1172 *	attribute
1173 *	@card: qeth_card structure pointer
1174 */
1175static void qeth_l2_detect_dev2br_support(struct qeth_card *card)
1176{
1177	struct qeth_priv *priv = netdev_priv(card->dev);
1178	bool dev2br_supported;
1179
1180	QETH_CARD_TEXT(card, 2, "d2brsup");
1181	if (!IS_IQD(card))
1182		return;
1183
1184	/* dev2br requires valid cssid,iid,chid */
1185	dev2br_supported = card->info.ids_valid &&
1186			   css_general_characteristics.enarf;
1187	QETH_CARD_TEXT_(card, 2, "D2Bsup%02x", dev2br_supported);
1188
1189	if (dev2br_supported)
1190		priv->brport_hw_features |= BR_LEARNING_SYNC;
1191	else
1192		priv->brport_hw_features &= ~BR_LEARNING_SYNC;
1193}
1194
1195static void qeth_l2_enable_brport_features(struct qeth_card *card)
1196{
1197	struct qeth_priv *priv = netdev_priv(card->dev);
1198	int rc;
1199
1200	if (priv->brport_features & BR_LEARNING_SYNC) {
1201		if (priv->brport_hw_features & BR_LEARNING_SYNC) {
1202			qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1203			rc = qeth_l2_dev2br_an_set(card, true);
1204			if (rc == -EAGAIN) {
1205				/* Recoverable error, retry once */
1206				qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1207				qeth_l2_dev2br_fdb_flush(card);
1208				qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1209				rc = qeth_l2_dev2br_an_set(card, true);
1210			}
1211			if (rc) {
1212				netdev_err(card->dev,
1213					   "failed to enable bridge learning_sync: %d\n",
1214					   rc);
1215				qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1216				qeth_l2_dev2br_fdb_flush(card);
1217				priv->brport_features ^= BR_LEARNING_SYNC;
1218			}
1219		} else {
1220			dev_warn(&card->gdev->dev,
1221				"bridge learning_sync not supported\n");
1222			priv->brport_features ^= BR_LEARNING_SYNC;
1223		}
1224	}
1225}
1226
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1227/* SETBRIDGEPORT support, async notifications */
1228
1229enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1230
1231/**
1232 * qeth_bridge_emit_host_event() - bridgeport address change notification
1233 * @card:  qeth_card structure pointer, for udev events.
1234 * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1235 *	      and reset token and addr_lnid are unused and may be NULL.
1236 * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1237 *			  object, 0 - addition of an object.
1238 *			  0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1239 * @token: "network token" structure identifying physical address of the port.
1240 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1241 *
1242 * This function is called when registrations and deregistrations are
1243 * reported by the hardware, and also when notifications are enabled -
1244 * for all currently registered addresses.
1245 */
1246static void qeth_bridge_emit_host_event(struct qeth_card *card,
1247					enum qeth_an_event_type evtype,
1248					u8 code,
1249					struct net_if_token *token,
1250					struct mac_addr_lnid *addr_lnid)
1251{
1252	char str[7][32];
1253	char *env[8];
1254	int i = 0;
1255
1256	switch (evtype) {
1257	case anev_reg_unreg:
1258		scnprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1259			  (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1260			  ? "deregister" : "register");
1261		env[i] = str[i]; i++;
1262		if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1263			scnprintf(str[i], sizeof(str[i]), "VLAN=%d",
1264				  addr_lnid->lnid);
1265			env[i] = str[i]; i++;
1266		}
1267		if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1268			scnprintf(str[i], sizeof(str[i]), "MAC=%pM",
1269				  addr_lnid->mac);
1270			env[i] = str[i]; i++;
1271		}
1272		scnprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1273			  token->cssid, token->ssid, token->devnum);
1274		env[i] = str[i]; i++;
1275		scnprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1276		env[i] = str[i]; i++;
1277		scnprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1278			  token->chpid);
1279		env[i] = str[i]; i++;
1280		scnprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x",
1281			  token->chid);
1282		env[i] = str[i]; i++;
1283		break;
1284	case anev_abort:
1285		scnprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1286		env[i] = str[i]; i++;
1287		break;
1288	case anev_reset:
1289		scnprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1290		env[i] = str[i]; i++;
1291		break;
1292	}
1293	env[i] = NULL;
1294	kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1295}
1296
1297struct qeth_bridge_state_data {
1298	struct work_struct worker;
1299	struct qeth_card *card;
1300	u8 role;
1301	u8 state;
1302};
1303
1304static void qeth_bridge_state_change_worker(struct work_struct *work)
1305{
1306	struct qeth_bridge_state_data *data =
1307		container_of(work, struct qeth_bridge_state_data, worker);
1308	char env_locrem[32];
1309	char env_role[32];
1310	char env_state[32];
1311	char *env[] = {
1312		env_locrem,
1313		env_role,
1314		env_state,
1315		NULL
1316	};
1317
1318	scnprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1319	scnprintf(env_role, sizeof(env_role), "ROLE=%s",
1320		  (data->role == QETH_SBP_ROLE_NONE) ? "none" :
1321		  (data->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1322		  (data->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1323		  "<INVALID>");
1324	scnprintf(env_state, sizeof(env_state), "STATE=%s",
1325		  (data->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1326		  (data->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1327		  (data->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1328		  "<INVALID>");
1329	kobject_uevent_env(&data->card->gdev->dev.kobj,
1330				KOBJ_CHANGE, env);
1331	kfree(data);
1332}
1333
1334static void qeth_bridge_state_change(struct qeth_card *card,
1335					struct qeth_ipa_cmd *cmd)
1336{
1337	struct qeth_sbp_port_data *qports = &cmd->data.sbp.data.port_data;
1338	struct qeth_bridge_state_data *data;
1339
1340	QETH_CARD_TEXT(card, 2, "brstchng");
1341	if (qports->num_entries == 0) {
1342		QETH_CARD_TEXT(card, 2, "BPempty");
1343		return;
1344	}
1345	if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1346		QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1347		return;
1348	}
1349
1350	data = kzalloc(sizeof(*data), GFP_ATOMIC);
1351	if (!data) {
1352		QETH_CARD_TEXT(card, 2, "BPSalloc");
1353		return;
1354	}
1355	INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1356	data->card = card;
1357	/* Information for the local port: */
1358	data->role = qports->entry[0].role;
1359	data->state = qports->entry[0].state;
1360
1361	queue_work(card->event_wq, &data->worker);
1362}
1363
1364struct qeth_addr_change_data {
1365	struct delayed_work dwork;
1366	struct qeth_card *card;
1367	struct qeth_ipacmd_addr_change ac_event;
1368};
1369
1370static void qeth_l2_dev2br_worker(struct work_struct *work)
1371{
1372	struct delayed_work *dwork = to_delayed_work(work);
1373	struct qeth_addr_change_data *data;
1374	struct qeth_card *card;
1375	struct qeth_priv *priv;
1376	unsigned int i;
1377	int rc;
1378
1379	data = container_of(dwork, struct qeth_addr_change_data, dwork);
1380	card = data->card;
1381	priv = netdev_priv(card->dev);
1382
1383	QETH_CARD_TEXT(card, 4, "dev2brew");
1384
1385	if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE)
1386		goto free;
1387
1388	if (data->ac_event.lost_event_mask) {
1389		/* Potential re-config in progress, try again later: */
1390		if (!rtnl_trylock()) {
1391			queue_delayed_work(card->event_wq, dwork,
1392					   msecs_to_jiffies(100));
1393			return;
1394		}
1395
1396		if (!netif_device_present(card->dev)) {
1397			rtnl_unlock();
1398			goto free;
1399		}
1400
1401		QETH_DBF_MESSAGE(3,
1402				 "Address change notification overflow on device %x\n",
1403				 CARD_DEVID(card));
1404		/* Card fdb and bridge fdb are out of sync, card has stopped
1405		 * notifications (no need to drain_workqueue). Purge all
1406		 * 'extern_learn' entries from the parent bridge and restart
1407		 * the notifications.
1408		 */
1409		qeth_l2_dev2br_fdb_flush(card);
1410		rc = qeth_l2_dev2br_an_set(card, true);
1411		if (rc) {
1412			/* TODO: if we want to retry after -EAGAIN, be
1413			 * aware there could be stale entries in the
1414			 * workqueue now, that need to be drained.
1415			 * For now we give up:
1416			 */
1417			netdev_err(card->dev,
1418				   "bridge learning_sync failed to recover: %d\n",
1419				   rc);
1420			WRITE_ONCE(card->info.pnso_mode,
1421				   QETH_PNSO_NONE);
1422			/* To remove fdb entries reported by an_set: */
1423			qeth_l2_dev2br_fdb_flush(card);
1424			priv->brport_features ^= BR_LEARNING_SYNC;
1425		} else {
1426			QETH_DBF_MESSAGE(3,
1427					 "Address Notification resynced on device %x\n",
1428					 CARD_DEVID(card));
1429		}
1430
1431		rtnl_unlock();
1432	} else {
1433		for (i = 0; i < data->ac_event.num_entries; i++) {
1434			struct qeth_ipacmd_addr_change_entry *entry =
1435					&data->ac_event.entry[i];
1436			qeth_l2_dev2br_fdb_notify(card,
1437						  entry->change_code,
1438						  &entry->token,
1439						  &entry->addr_lnid);
1440		}
1441	}
1442
1443free:
1444	kfree(data);
1445}
1446
1447static void qeth_addr_change_event_worker(struct work_struct *work)
1448{
1449	struct delayed_work *dwork = to_delayed_work(work);
1450	struct qeth_addr_change_data *data;
1451	struct qeth_card *card;
1452	int i;
1453
1454	data = container_of(dwork, struct qeth_addr_change_data, dwork);
1455	card = data->card;
1456
1457	QETH_CARD_TEXT(data->card, 4, "adrchgew");
1458
1459	if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE)
1460		goto free;
1461
1462	if (data->ac_event.lost_event_mask) {
1463		/* Potential re-config in progress, try again later: */
1464		if (!mutex_trylock(&card->sbp_lock)) {
1465			queue_delayed_work(card->event_wq, dwork,
1466					   msecs_to_jiffies(100));
1467			return;
1468		}
1469
1470		dev_info(&data->card->gdev->dev,
1471			 "Address change notification stopped on %s (%s)\n",
1472			 netdev_name(card->dev),
1473			(data->ac_event.lost_event_mask == 0x01)
1474			? "Overflow"
1475			: (data->ac_event.lost_event_mask == 0x02)
1476			? "Bridge port state change"
1477			: "Unknown reason");
1478
1479		data->card->options.sbp.hostnotification = 0;
1480		card->info.pnso_mode = QETH_PNSO_NONE;
1481		mutex_unlock(&data->card->sbp_lock);
1482		qeth_bridge_emit_host_event(data->card, anev_abort,
1483					    0, NULL, NULL);
1484	} else
1485		for (i = 0; i < data->ac_event.num_entries; i++) {
1486			struct qeth_ipacmd_addr_change_entry *entry =
1487					&data->ac_event.entry[i];
1488			qeth_bridge_emit_host_event(data->card,
1489						    anev_reg_unreg,
1490						    entry->change_code,
1491						    &entry->token,
1492						    &entry->addr_lnid);
1493		}
1494
1495free:
1496	kfree(data);
1497}
1498
1499static void qeth_addr_change_event(struct qeth_card *card,
1500				   struct qeth_ipa_cmd *cmd)
1501{
1502	struct qeth_ipacmd_addr_change *hostevs =
1503		 &cmd->data.addrchange;
1504	struct qeth_addr_change_data *data;
1505	int extrasize;
1506
1507	if (card->info.pnso_mode == QETH_PNSO_NONE)
1508		return;
1509
1510	QETH_CARD_TEXT(card, 4, "adrchgev");
1511	if (cmd->hdr.return_code != 0x0000) {
1512		if (cmd->hdr.return_code == 0x0010) {
1513			if (hostevs->lost_event_mask == 0x00)
1514				hostevs->lost_event_mask = 0xff;
1515		} else {
1516			QETH_CARD_TEXT_(card, 2, "ACHN%04x",
1517				cmd->hdr.return_code);
1518			return;
1519		}
1520	}
1521	extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1522						hostevs->num_entries;
1523	data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize,
1524		       GFP_ATOMIC);
1525	if (!data) {
1526		QETH_CARD_TEXT(card, 2, "ACNalloc");
1527		return;
1528	}
1529	if (card->info.pnso_mode == QETH_PNSO_BRIDGEPORT)
1530		INIT_DELAYED_WORK(&data->dwork, qeth_addr_change_event_worker);
1531	else
1532		INIT_DELAYED_WORK(&data->dwork, qeth_l2_dev2br_worker);
1533	data->card = card;
1534	data->ac_event = *hostevs;
1535	memcpy(data->ac_event.entry, hostevs->entry, extrasize);
1536	queue_delayed_work(card->event_wq, &data->dwork, 0);
1537}
1538
1539/* SETBRIDGEPORT support; sending commands */
1540
1541struct _qeth_sbp_cbctl {
1542	union {
1543		u32 supported;
1544		struct {
1545			enum qeth_sbp_roles *role;
1546			enum qeth_sbp_states *state;
1547		} qports;
1548	} data;
1549};
1550
1551static int qeth_bridgeport_makerc(struct qeth_card *card,
1552				  struct qeth_ipa_cmd *cmd)
1553{
1554	struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp;
1555	enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code;
1556	u16 ipa_rc = cmd->hdr.return_code;
1557	u16 sbp_rc = sbp->hdr.return_code;
1558	int rc;
1559
1560	if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS)
1561		return 0;
1562
1563	if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) ||
1564	    (!IS_IQD(card) && ipa_rc == sbp_rc)) {
1565		switch (sbp_rc) {
1566		case IPA_RC_SUCCESS:
1567			rc = 0;
1568			break;
1569		case IPA_RC_L2_UNSUPPORTED_CMD:
1570		case IPA_RC_UNSUPPORTED_COMMAND:
1571			rc = -EOPNOTSUPP;
1572			break;
1573		case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1574		case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1575			rc = -ENODEV; /* maybe not the best code here? */
1576			dev_err(&card->gdev->dev,
1577	"The device is not configured as a Bridge Port\n");
1578			break;
1579		case IPA_RC_SBP_OSA_OS_MISMATCH:
1580		case IPA_RC_SBP_IQD_OS_MISMATCH:
1581			rc = -EPERM;
1582			dev_err(&card->gdev->dev,
1583	"A Bridge Port is already configured by a different operating system\n");
1584			break;
1585		case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1586		case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1587			switch (setcmd) {
1588			case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1589				rc = -EEXIST;
1590				dev_err(&card->gdev->dev,
1591	"The LAN already has a primary Bridge Port\n");
1592				break;
1593			case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1594				rc = -EBUSY;
1595				dev_err(&card->gdev->dev,
1596	"The device is already a primary Bridge Port\n");
1597				break;
1598			default:
1599				rc = -EIO;
1600			}
1601			break;
1602		case IPA_RC_SBP_OSA_CURRENT_SECOND:
1603		case IPA_RC_SBP_IQD_CURRENT_SECOND:
1604			rc = -EBUSY;
1605			dev_err(&card->gdev->dev,
1606	"The device is already a secondary Bridge Port\n");
1607			break;
1608		case IPA_RC_SBP_OSA_LIMIT_SECOND:
1609		case IPA_RC_SBP_IQD_LIMIT_SECOND:
1610			rc = -EEXIST;
1611			dev_err(&card->gdev->dev,
1612	"The LAN cannot have more secondary Bridge Ports\n");
1613			break;
1614		case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1615		case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1616			rc = -EBUSY;
1617			dev_err(&card->gdev->dev,
1618	"The device is already a primary Bridge Port\n");
1619			break;
1620		case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1621		case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1622			rc = -EACCES;
1623			dev_err(&card->gdev->dev,
1624	"The device is not authorized to be a Bridge Port\n");
1625			break;
1626		default:
1627			rc = -EIO;
1628		}
1629	} else {
1630		switch (ipa_rc) {
1631		case IPA_RC_NOTSUPP:
1632			rc = -EOPNOTSUPP;
1633			break;
1634		case IPA_RC_UNSUPPORTED_COMMAND:
1635			rc = -EOPNOTSUPP;
1636			break;
1637		default:
1638			rc = -EIO;
1639		}
1640	}
1641
1642	if (rc) {
1643		QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc);
1644		QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc);
1645	}
1646	return rc;
1647}
1648
1649static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1650						  enum qeth_ipa_sbp_cmd sbp_cmd,
1651						  unsigned int data_length)
1652{
1653	enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD :
1654						    IPA_CMD_SETBRIDGEPORT_OSA;
1655	struct qeth_ipacmd_sbp_hdr *hdr;
1656	struct qeth_cmd_buffer *iob;
1657
1658	iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE,
1659				 data_length +
1660				 offsetof(struct qeth_ipacmd_setbridgeport,
1661					  data));
1662	if (!iob)
1663		return iob;
1664
1665	hdr = &__ipa_cmd(iob)->data.sbp.hdr;
1666	hdr->cmdlength = sizeof(*hdr) + data_length;
1667	hdr->command_code = sbp_cmd;
1668	hdr->used_total = 1;
1669	hdr->seq_no = 1;
1670	return iob;
1671}
1672
1673static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1674	struct qeth_reply *reply, unsigned long data)
1675{
1676	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1677	struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1678	int rc;
1679
1680	QETH_CARD_TEXT(card, 2, "brqsupcb");
1681	rc = qeth_bridgeport_makerc(card, cmd);
1682	if (rc)
1683		return rc;
1684
1685	cbctl->data.supported =
1686		cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1687	return 0;
1688}
1689
1690/**
1691 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1692 * @card:			     qeth_card structure pointer.
1693 *
1694 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1695 * strucutre: card->options.sbp.supported_funcs.
1696 */
1697static void qeth_bridgeport_query_support(struct qeth_card *card)
1698{
1699	struct qeth_cmd_buffer *iob;
1700	struct _qeth_sbp_cbctl cbctl;
1701
1702	QETH_CARD_TEXT(card, 2, "brqsuppo");
1703	iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1704				 SBP_DATA_SIZEOF(query_cmds_supp));
1705	if (!iob)
1706		return;
1707
1708	if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1709			      &cbctl)) {
1710		card->options.sbp.role = QETH_SBP_ROLE_NONE;
1711		card->options.sbp.supported_funcs = 0;
1712		return;
1713	}
1714	card->options.sbp.supported_funcs = cbctl.data.supported;
1715}
1716
1717static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1718	struct qeth_reply *reply, unsigned long data)
1719{
1720	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1721	struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1722	struct qeth_sbp_port_data *qports;
1723	int rc;
1724
1725	QETH_CARD_TEXT(card, 2, "brqprtcb");
1726	rc = qeth_bridgeport_makerc(card, cmd);
1727	if (rc)
1728		return rc;
1729
1730	qports = &cmd->data.sbp.data.port_data;
1731	if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1732		QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1733		return -EINVAL;
1734	}
1735	/* first entry contains the state of the local port */
1736	if (qports->num_entries > 0) {
1737		if (cbctl->data.qports.role)
1738			*cbctl->data.qports.role = qports->entry[0].role;
1739		if (cbctl->data.qports.state)
1740			*cbctl->data.qports.state = qports->entry[0].state;
1741	}
1742	return 0;
1743}
1744
1745/**
1746 * qeth_bridgeport_query_ports() - query local bridgeport status.
1747 * @card:			   qeth_card structure pointer.
1748 * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
1749 * @state:  State of the port: 0-inactive, 1-standby, 2-active.
1750 *
1751 * Returns negative errno-compatible error indication or 0 on success.
1752 *
1753 * 'role' and 'state' are not updated in case of hardware operation failure.
1754 */
1755int qeth_bridgeport_query_ports(struct qeth_card *card,
1756	enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1757{
1758	struct qeth_cmd_buffer *iob;
1759	struct _qeth_sbp_cbctl cbctl = {
1760		.data = {
1761			.qports = {
1762				.role = role,
1763				.state = state,
1764			},
1765		},
1766	};
1767
1768	QETH_CARD_TEXT(card, 2, "brqports");
1769	if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1770		return -EOPNOTSUPP;
1771	iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1772	if (!iob)
1773		return -ENOMEM;
1774
1775	return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1776				 &cbctl);
1777}
1778
1779static int qeth_bridgeport_set_cb(struct qeth_card *card,
1780	struct qeth_reply *reply, unsigned long data)
1781{
1782	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1783
1784	QETH_CARD_TEXT(card, 2, "brsetrcb");
1785	return qeth_bridgeport_makerc(card, cmd);
1786}
1787
1788/**
1789 * qeth_bridgeport_setrole() - Assign primary role to the port.
1790 * @card:		       qeth_card structure pointer.
1791 * @role:		       Role to assign.
1792 *
1793 * Returns negative errno-compatible error indication or 0 on success.
1794 */
1795int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1796{
1797	struct qeth_cmd_buffer *iob;
1798	enum qeth_ipa_sbp_cmd setcmd;
1799	unsigned int cmdlength = 0;
1800
1801	QETH_CARD_TEXT(card, 2, "brsetrol");
1802	switch (role) {
1803	case QETH_SBP_ROLE_NONE:
1804		setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1805		break;
1806	case QETH_SBP_ROLE_PRIMARY:
1807		setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1808		cmdlength = SBP_DATA_SIZEOF(set_primary);
1809		break;
1810	case QETH_SBP_ROLE_SECONDARY:
1811		setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1812		break;
1813	default:
1814		return -EINVAL;
1815	}
1816	if (!(card->options.sbp.supported_funcs & setcmd))
1817		return -EOPNOTSUPP;
1818	iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1819	if (!iob)
1820		return -ENOMEM;
1821
1822	return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL);
1823}
1824
1825static void qeth_bridgeport_an_set_cb(void *priv,
1826				      struct chsc_pnso_naid_l2 *entry)
1827{
1828	struct qeth_card *card = (struct qeth_card *)priv;
1829	u8 code;
1830
1831	code = IPA_ADDR_CHANGE_CODE_MACADDR;
1832	if (entry->addr_lnid.lnid < VLAN_N_VID)
1833		code |= IPA_ADDR_CHANGE_CODE_VLANID;
1834	qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1835				    (struct net_if_token *)&entry->nit,
1836				    (struct mac_addr_lnid *)&entry->addr_lnid);
1837}
1838
1839/**
1840 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1841 * @card:		      qeth_card structure pointer.
1842 * @enable:		      0 - disable, non-zero - enable notifications
1843 *
1844 * Returns negative errno-compatible error indication or 0 on success.
1845 *
1846 * On enable, emits a series of address notifications udev events for all
1847 * currently registered hosts.
1848 */
1849int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1850{
1851	int rc;
1852
1853	if (!card->options.sbp.supported_funcs)
1854		return -EOPNOTSUPP;
1855
1856	if (enable) {
1857		qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1858		qeth_l2_set_pnso_mode(card, QETH_PNSO_BRIDGEPORT);
1859		rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 1,
1860				  qeth_bridgeport_an_set_cb, card);
1861		if (rc)
1862			qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1863	} else {
1864		rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 0, NULL, NULL);
1865		qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1866	}
1867	return rc;
1868}
1869
1870/* VNIC Characteristics support */
1871
1872/* handle VNICC IPA command return codes; convert to error codes */
1873static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc)
1874{
1875	int rc;
1876
1877	switch (ipa_rc) {
1878	case IPA_RC_SUCCESS:
1879		return ipa_rc;
1880	case IPA_RC_L2_UNSUPPORTED_CMD:
1881	case IPA_RC_NOTSUPP:
1882		rc = -EOPNOTSUPP;
1883		break;
1884	case IPA_RC_VNICC_OOSEQ:
1885		rc = -EALREADY;
1886		break;
1887	case IPA_RC_VNICC_VNICBP:
1888		rc = -EBUSY;
1889		break;
1890	case IPA_RC_L2_ADDR_TABLE_FULL:
1891		rc = -ENOSPC;
1892		break;
1893	case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
1894		rc = -EACCES;
1895		break;
1896	default:
1897		rc = -EIO;
1898	}
1899
1900	QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
1901	return rc;
1902}
1903
1904/* generic VNICC request call back */
1905static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
1906				    struct qeth_reply *reply,
1907				    unsigned long data)
1908{
1909	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1910	struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
1911	u32 sub_cmd = cmd->data.vnicc.hdr.sub_command;
1912
1913	QETH_CARD_TEXT(card, 2, "vniccrcb");
1914	if (cmd->hdr.return_code)
1915		return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code);
1916	/* return results to caller */
1917	card->options.vnicc.sup_chars = rep->vnicc_cmds.supported;
1918	card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled;
1919
1920	if (sub_cmd == IPA_VNICC_QUERY_CMDS)
1921		*(u32 *)reply->param = rep->data.query_cmds.sup_cmds;
1922	else if (sub_cmd == IPA_VNICC_GET_TIMEOUT)
1923		*(u32 *)reply->param = rep->data.getset_timeout.timeout;
1924
1925	return 0;
1926}
1927
1928static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card,
1929						       u32 vnicc_cmd,
1930						       unsigned int data_length)
1931{
1932	struct qeth_ipacmd_vnicc_hdr *hdr;
1933	struct qeth_cmd_buffer *iob;
1934
1935	iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE,
1936				 data_length +
1937				 offsetof(struct qeth_ipacmd_vnicc, data));
1938	if (!iob)
1939		return NULL;
1940
1941	hdr = &__ipa_cmd(iob)->data.vnicc.hdr;
1942	hdr->data_length = sizeof(*hdr) + data_length;
1943	hdr->sub_command = vnicc_cmd;
1944	return iob;
1945}
1946
1947/* VNICC query VNIC characteristics request */
1948static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
1949{
1950	struct qeth_cmd_buffer *iob;
1951
1952	QETH_CARD_TEXT(card, 2, "vniccqch");
1953	iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0);
1954	if (!iob)
1955		return -ENOMEM;
1956
1957	return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1958}
1959
1960/* VNICC query sub commands request */
1961static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
1962				    u32 *sup_cmds)
1963{
1964	struct qeth_cmd_buffer *iob;
1965
1966	QETH_CARD_TEXT(card, 2, "vniccqcm");
1967	iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS,
1968				      VNICC_DATA_SIZEOF(query_cmds));
1969	if (!iob)
1970		return -ENOMEM;
1971
1972	__ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char;
1973
1974	return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds);
1975}
1976
1977/* VNICC enable/disable characteristic request */
1978static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
1979				      u32 cmd)
1980{
1981	struct qeth_cmd_buffer *iob;
1982
1983	QETH_CARD_TEXT(card, 2, "vniccedc");
1984	iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char));
1985	if (!iob)
1986		return -ENOMEM;
1987
1988	__ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char;
1989
1990	return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1991}
1992
1993/* VNICC get/set timeout for characteristic request */
1994static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
1995					u32 cmd, u32 *timeout)
1996{
1997	struct qeth_vnicc_getset_timeout *getset_timeout;
1998	struct qeth_cmd_buffer *iob;
1999
2000	QETH_CARD_TEXT(card, 2, "vniccgst");
2001	iob = qeth_l2_vnicc_build_cmd(card, cmd,
2002				      VNICC_DATA_SIZEOF(getset_timeout));
2003	if (!iob)
2004		return -ENOMEM;
2005
2006	getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout;
2007	getset_timeout->vnic_char = vnicc;
2008
2009	if (cmd == IPA_VNICC_SET_TIMEOUT)
2010		getset_timeout->timeout = *timeout;
2011
2012	return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, timeout);
2013}
2014
2015/* recover user timeout setting */
2016static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
2017					  u32 *timeout)
2018{
2019	if (card->options.vnicc.sup_chars & vnicc &&
2020	    card->options.vnicc.getset_timeout_sup & vnicc &&
2021	    !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
2022					  timeout))
2023		return false;
2024	*timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2025	return true;
2026}
2027
2028/* set current VNICC flag state; called from sysfs store function */
2029int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
2030{
2031	int rc = 0;
2032	u32 cmd;
2033
2034	QETH_CARD_TEXT(card, 2, "vniccsch");
2035
2036	/* check if characteristic and enable/disable are supported */
2037	if (!(card->options.vnicc.sup_chars & vnicc) ||
2038	    !(card->options.vnicc.set_char_sup & vnicc))
2039		return -EOPNOTSUPP;
2040
2041	if (qeth_bridgeport_is_in_use(card))
2042		return -EBUSY;
2043
2044	/* set enable/disable command and store wanted characteristic */
2045	if (state) {
2046		cmd = IPA_VNICC_ENABLE;
2047		card->options.vnicc.wanted_chars |= vnicc;
2048	} else {
2049		cmd = IPA_VNICC_DISABLE;
2050		card->options.vnicc.wanted_chars &= ~vnicc;
2051	}
2052
2053	/* do we need to do anything? */
2054	if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
2055		return rc;
2056
2057	/* if card is not ready, simply stop here */
2058	if (!qeth_card_hw_is_reachable(card)) {
2059		if (state)
2060			card->options.vnicc.cur_chars |= vnicc;
2061		else
2062			card->options.vnicc.cur_chars &= ~vnicc;
2063		return rc;
2064	}
2065
2066	rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
2067	if (rc)
2068		card->options.vnicc.wanted_chars =
2069			card->options.vnicc.cur_chars;
2070	else {
2071		/* successful online VNICC change; handle special cases */
2072		if (state && vnicc == QETH_VNICC_RX_BCAST)
2073			card->options.vnicc.rx_bcast_enabled = true;
2074		if (!state && vnicc == QETH_VNICC_LEARNING)
2075			qeth_l2_vnicc_recover_timeout(card, vnicc,
2076					&card->options.vnicc.learning_timeout);
2077	}
2078
2079	return rc;
2080}
2081
2082/* get current VNICC flag state; called from sysfs show function */
2083int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
2084{
2085	int rc = 0;
2086
2087	QETH_CARD_TEXT(card, 2, "vniccgch");
2088
2089	/* check if characteristic is supported */
2090	if (!(card->options.vnicc.sup_chars & vnicc))
2091		return -EOPNOTSUPP;
2092
2093	if (qeth_bridgeport_is_in_use(card))
2094		return -EBUSY;
2095
2096	/* if card is ready, query current VNICC state */
2097	if (qeth_card_hw_is_reachable(card))
2098		rc = qeth_l2_vnicc_query_chars(card);
2099
2100	*state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
2101	return rc;
2102}
2103
2104/* set VNICC timeout; called from sysfs store function. Currently, only learning
2105 * supports timeout
2106 */
2107int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
2108{
2109	int rc = 0;
2110
2111	QETH_CARD_TEXT(card, 2, "vniccsto");
2112
2113	/* check if characteristic and set_timeout are supported */
2114	if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2115	    !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2116		return -EOPNOTSUPP;
2117
2118	if (qeth_bridgeport_is_in_use(card))
2119		return -EBUSY;
2120
2121	/* do we need to do anything? */
2122	if (card->options.vnicc.learning_timeout == timeout)
2123		return rc;
2124
2125	/* if card is not ready, simply store the value internally and return */
2126	if (!qeth_card_hw_is_reachable(card)) {
2127		card->options.vnicc.learning_timeout = timeout;
2128		return rc;
2129	}
2130
2131	/* send timeout value to card; if successful, store value internally */
2132	rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2133					  IPA_VNICC_SET_TIMEOUT, &timeout);
2134	if (!rc)
2135		card->options.vnicc.learning_timeout = timeout;
2136
2137	return rc;
2138}
2139
2140/* get current VNICC timeout; called from sysfs show function. Currently, only
2141 * learning supports timeout
2142 */
2143int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
2144{
2145	int rc = 0;
2146
2147	QETH_CARD_TEXT(card, 2, "vniccgto");
2148
2149	/* check if characteristic and get_timeout are supported */
2150	if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2151	    !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2152		return -EOPNOTSUPP;
2153
2154	if (qeth_bridgeport_is_in_use(card))
2155		return -EBUSY;
2156
2157	/* if card is ready, get timeout. Otherwise, just return stored value */
2158	*timeout = card->options.vnicc.learning_timeout;
2159	if (qeth_card_hw_is_reachable(card))
2160		rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2161						  IPA_VNICC_GET_TIMEOUT,
2162						  timeout);
2163
2164	return rc;
2165}
2166
2167/* check if VNICC is currently enabled */
2168static bool _qeth_l2_vnicc_is_in_use(struct qeth_card *card)
2169{
2170	if (!card->options.vnicc.sup_chars)
2171		return false;
2172	/* default values are only OK if rx_bcast was not enabled by user
2173	 * or the card is offline.
2174	 */
2175	if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
2176		if (!card->options.vnicc.rx_bcast_enabled ||
2177		    !qeth_card_hw_is_reachable(card))
2178			return false;
2179	}
2180	return true;
2181}
2182
2183/**
2184 *	qeth_bridgeport_allowed - are any qeth_bridgeport functions allowed?
2185 *	@card: qeth_card structure pointer
2186 *
2187 *	qeth_bridgeport functionality is mutually exclusive with usage of the
2188 *	VNIC Characteristics and dev2br address notifications
2189 */
2190bool qeth_bridgeport_allowed(struct qeth_card *card)
2191{
2192	struct qeth_priv *priv = netdev_priv(card->dev);
2193
2194	return (!_qeth_l2_vnicc_is_in_use(card) &&
2195		!(priv->brport_features & BR_LEARNING_SYNC));
2196}
2197
2198/* recover user characteristic setting */
2199static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2200				       bool enable)
2201{
2202	u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2203
2204	if (card->options.vnicc.sup_chars & vnicc &&
2205	    card->options.vnicc.set_char_sup & vnicc &&
2206	    !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2207		return false;
2208	card->options.vnicc.wanted_chars &= ~vnicc;
2209	card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2210	return true;
2211}
2212
2213/* (re-)initialize VNICC */
2214static void qeth_l2_vnicc_init(struct qeth_card *card)
2215{
2216	u32 *timeout = &card->options.vnicc.learning_timeout;
2217	bool enable, error = false;
2218	unsigned int chars_len, i;
2219	unsigned long chars_tmp;
2220	u32 sup_cmds, vnicc;
2221
2222	QETH_CARD_TEXT(card, 2, "vniccini");
2223	/* reset rx_bcast */
2224	card->options.vnicc.rx_bcast_enabled = 0;
2225	/* initial query and storage of VNIC characteristics */
2226	if (qeth_l2_vnicc_query_chars(card)) {
2227		if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2228		    *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
2229			dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2230		/* fail quietly if user didn't change the default config */
2231		card->options.vnicc.sup_chars = 0;
2232		card->options.vnicc.cur_chars = 0;
2233		card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2234		return;
2235	}
2236	/* get supported commands for each supported characteristic */
2237	chars_tmp = card->options.vnicc.sup_chars;
2238	chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2239	for_each_set_bit(i, &chars_tmp, chars_len) {
2240		vnicc = BIT(i);
2241		if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) {
2242			sup_cmds = 0;
2243			error = true;
2244		}
2245		if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) &&
2246		    (sup_cmds & IPA_VNICC_GET_TIMEOUT))
2247			card->options.vnicc.getset_timeout_sup |= vnicc;
2248		else
2249			card->options.vnicc.getset_timeout_sup &= ~vnicc;
2250		if ((sup_cmds & IPA_VNICC_ENABLE) &&
2251		    (sup_cmds & IPA_VNICC_DISABLE))
2252			card->options.vnicc.set_char_sup |= vnicc;
2253		else
2254			card->options.vnicc.set_char_sup &= ~vnicc;
2255	}
2256	/* enforce assumed default values and recover settings, if changed  */
2257	error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2258					       timeout);
2259	/* Change chars, if necessary  */
2260	chars_tmp = card->options.vnicc.wanted_chars ^
2261		    card->options.vnicc.cur_chars;
2262	chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2263	for_each_set_bit(i, &chars_tmp, chars_len) {
2264		vnicc = BIT(i);
2265		enable = card->options.vnicc.wanted_chars & vnicc;
2266		error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2267	}
2268	if (error)
2269		dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2270}
2271
2272/* configure default values of VNIC characteristics */
2273static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2274{
2275	/* characteristics values */
2276	card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2277	card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
2278	card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2279	/* supported commands */
2280	card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
2281	card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
2282	/* settings wanted by users */
2283	card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2284}
2285
2286static const struct device_type qeth_l2_devtype = {
2287	.name = "qeth_layer2",
2288	.groups = qeth_l2_attr_groups,
2289};
2290
2291static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
2292{
2293	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2294	int rc;
2295
 
 
 
2296	qeth_l2_vnicc_set_defaults(card);
2297	mutex_init(&card->sbp_lock);
2298
2299	if (gdev->dev.type) {
2300		rc = device_add_groups(&gdev->dev, qeth_l2_attr_groups);
2301		if (rc)
2302			return rc;
2303	} else {
2304		gdev->dev.type = &qeth_l2_devtype;
2305	}
2306
2307	INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work);
2308	return 0;
2309}
2310
2311static void qeth_l2_remove_device(struct ccwgroup_device *gdev)
2312{
2313	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2314	struct qeth_priv *priv;
2315
2316	if (gdev->dev.type != &qeth_l2_devtype)
2317		device_remove_groups(&gdev->dev, qeth_l2_attr_groups);
2318
2319	qeth_set_allowed_threads(card, 0, 1);
2320	wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2321
2322	if (gdev->state == CCWGROUP_ONLINE)
2323		qeth_set_offline(card, card->discipline, false);
2324
2325	if (card->dev->reg_state == NETREG_REGISTERED) {
2326		priv = netdev_priv(card->dev);
2327		if (priv->brport_features & BR_LEARNING_SYNC) {
2328			rtnl_lock();
2329			qeth_l2_br2dev_put();
2330			rtnl_unlock();
2331		}
2332		unregister_netdev(card->dev);
2333	}
2334}
2335
2336static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok)
2337{
2338	struct net_device *dev = card->dev;
2339	int rc = 0;
2340
2341	qeth_l2_detect_dev2br_support(card);
2342
2343	mutex_lock(&card->sbp_lock);
2344	qeth_bridgeport_query_support(card);
2345	if (card->options.sbp.supported_funcs) {
2346		qeth_l2_setup_bridgeport_attrs(card);
2347		dev_info(&card->gdev->dev,
2348			 "The device represents a Bridge Capable Port\n");
2349	}
2350	mutex_unlock(&card->sbp_lock);
2351
2352	qeth_l2_register_dev_addr(card);
2353
2354	/* for the rx_bcast characteristic, init VNICC after setmac */
2355	qeth_l2_vnicc_init(card);
2356
2357	qeth_l2_trace_features(card);
2358
2359	/* softsetup */
2360	QETH_CARD_TEXT(card, 2, "softsetp");
2361
2362	card->state = CARD_STATE_SOFTSETUP;
2363
2364	qeth_set_allowed_threads(card, 0xffffffff, 0);
2365
2366	if (dev->reg_state != NETREG_REGISTERED) {
2367		rc = qeth_l2_setup_netdev(card);
2368		if (rc)
2369			goto err_setup;
2370
2371		if (carrier_ok)
2372			netif_carrier_on(dev);
2373	} else {
2374		rtnl_lock();
2375		rc = qeth_set_real_num_tx_queues(card,
2376						 qeth_tx_actual_queues(card));
2377		if (rc) {
2378			rtnl_unlock();
2379			goto err_set_queues;
2380		}
2381
2382		if (carrier_ok)
2383			netif_carrier_on(dev);
2384		else
2385			netif_carrier_off(dev);
2386
2387		netif_device_attach(dev);
2388		qeth_enable_hw_features(dev);
2389		qeth_l2_enable_brport_features(card);
2390
2391		if (netif_running(dev)) {
2392			local_bh_disable();
2393			napi_schedule(&card->napi);
2394			/* kick-start the NAPI softirq: */
2395			local_bh_enable();
2396			qeth_l2_set_rx_mode(dev);
2397		}
2398		rtnl_unlock();
2399	}
2400	return 0;
2401
2402err_set_queues:
2403err_setup:
2404	qeth_set_allowed_threads(card, 0, 1);
2405	card->state = CARD_STATE_DOWN;
2406	return rc;
2407}
2408
2409static void qeth_l2_set_offline(struct qeth_card *card)
2410{
2411	struct qeth_priv *priv = netdev_priv(card->dev);
2412
2413	qeth_set_allowed_threads(card, 0, 1);
2414	qeth_l2_drain_rx_mode_cache(card);
2415
2416	if (card->state == CARD_STATE_SOFTSETUP)
2417		card->state = CARD_STATE_DOWN;
2418
2419	qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
2420	if (priv->brport_features & BR_LEARNING_SYNC)
2421		qeth_l2_dev2br_fdb_flush(card);
2422}
2423
2424/* Returns zero if the command is successfully "consumed" */
2425static int qeth_l2_control_event(struct qeth_card *card,
2426				 struct qeth_ipa_cmd *cmd)
2427{
2428	switch (cmd->hdr.command) {
2429	case IPA_CMD_SETBRIDGEPORT_OSA:
2430	case IPA_CMD_SETBRIDGEPORT_IQD:
2431		if (cmd->data.sbp.hdr.command_code ==
2432		    IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
2433			qeth_bridge_state_change(card, cmd);
2434			return 0;
2435		}
2436
2437		return 1;
2438	case IPA_CMD_ADDRESS_CHANGE_NOTIF:
2439		qeth_addr_change_event(card, cmd);
2440		return 0;
2441	default:
2442		return 1;
2443	}
2444}
2445
2446const struct qeth_discipline qeth_l2_discipline = {
 
2447	.setup = qeth_l2_probe_device,
2448	.remove = qeth_l2_remove_device,
2449	.set_online = qeth_l2_set_online,
2450	.set_offline = qeth_l2_set_offline,
 
2451	.control_event_handler = qeth_l2_control_event,
2452};
2453EXPORT_SYMBOL_GPL(qeth_l2_discipline);
2454
2455static int __init qeth_l2_init(void)
2456{
2457	pr_info("register layer 2 discipline\n");
2458	refcount_set(&qeth_l2_switchdev_notify_refcnt, 0);
2459	return 0;
2460}
2461
2462static void __exit qeth_l2_exit(void)
2463{
2464	pr_info("unregister layer 2 discipline\n");
2465}
2466
2467module_init(qeth_l2_init);
2468module_exit(qeth_l2_exit);
2469MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2470MODULE_DESCRIPTION("qeth layer 2 discipline");
2471MODULE_LICENSE("GPL");