1 // SPDX-License-Identifier: GPL-2.0
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>
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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>
26 #include <asm/css_chars.h>
27 #include <asm/setup.h>
28 #include "qeth_core.h"
31 static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode)
36 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
41 case IPA_RC_L2_UNSUPPORTED_CMD:
44 case IPA_RC_L2_ADDR_TABLE_FULL:
47 case IPA_RC_L2_DUP_MAC:
48 case IPA_RC_L2_DUP_LAYER3_MAC:
51 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
52 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
55 case IPA_RC_L2_MAC_NOT_FOUND:
65 static int qeth_l2_send_setdelmac_cb(struct qeth_card *card,
66 struct qeth_reply *reply,
69 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
71 return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code);
74 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
75 enum qeth_ipa_cmds ipacmd)
77 struct qeth_ipa_cmd *cmd;
78 struct qeth_cmd_buffer *iob;
80 QETH_CARD_TEXT(card, 2, "L2sdmac");
81 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
82 IPA_DATA_SIZEOF(setdelmac));
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);
91 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
95 QETH_CARD_TEXT(card, 2, "L2Setmac");
96 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
98 dev_info(&card->gdev->dev,
99 "MAC address %pM successfully registered\n", mac);
103 dev_warn(&card->gdev->dev,
104 "MAC address %pM already exists\n", mac);
107 dev_warn(&card->gdev->dev,
108 "MAC address %pM is not authorized\n", mac);
115 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
117 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
118 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
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 already registered on device %x\n",
127 QETH_DBF_MESSAGE(2, "Failed to register MAC on device %x: %d\n",
128 CARD_DEVID(card), rc);
132 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
134 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
135 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
138 QETH_CARD_TEXT(card, 2, "L2Rmac");
139 rc = qeth_l2_send_setdelmac(card, mac, cmd);
141 QETH_DBF_MESSAGE(2, "Failed to delete MAC on device %u: %d\n",
142 CARD_DEVID(card), rc);
146 static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card)
148 struct qeth_mac *mac;
149 struct hlist_node *tmp;
152 hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) {
153 hash_del(&mac->hnode);
158 static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue,
159 struct qeth_hdr *hdr, struct sk_buff *skb,
160 int ipv, unsigned int data_len)
162 int cast_type = qeth_get_ether_cast_type(skb);
163 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
165 hdr->hdr.l2.pkt_length = data_len;
167 if (skb_is_gso(skb)) {
168 hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO;
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], ipv);
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;
181 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
183 /* VSWITCH relies on the VLAN
184 * information to be present in
186 if (veth->h_vlan_proto == __constant_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);
192 static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode)
195 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
200 case IPA_RC_L2_INVALID_VLAN_ID:
202 case IPA_RC_L2_DUP_VLAN_ID:
204 case IPA_RC_L2_VLAN_ID_NOT_FOUND:
206 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
213 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
214 struct qeth_reply *reply,
217 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
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);
226 return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code);
229 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
230 enum qeth_ipa_cmds ipacmd)
232 struct qeth_ipa_cmd *cmd;
233 struct qeth_cmd_buffer *iob;
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));
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);
245 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
246 __be16 proto, u16 vid)
248 struct qeth_card *card = dev->ml_priv;
250 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
254 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
257 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
258 __be16 proto, u16 vid)
260 struct qeth_card *card = dev->ml_priv;
262 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
266 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
269 static void qeth_l2_set_pnso_mode(struct qeth_card *card,
270 enum qeth_pnso_mode mode)
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)));
276 if (mode == QETH_PNSO_NONE)
277 drain_workqueue(card->event_wq);
280 static void qeth_l2_dev2br_fdb_flush(struct qeth_card *card)
282 struct switchdev_notifier_fdb_info info;
284 QETH_CARD_TEXT(card, 2, "fdbflush");
287 /* flush all VLANs: */
289 info.added_by_user = false;
290 info.offloaded = true;
292 call_switchdev_notifiers(SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
293 card->dev, &info.info, NULL);
296 static int qeth_l2_request_initial_mac(struct qeth_card *card)
300 QETH_CARD_TEXT(card, 2, "l2reqmac");
303 rc = qeth_vm_request_mac(card);
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: */
313 rc = qeth_setadpparms_change_macaddr(card);
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);
319 /* fall back once more: */
322 /* some devices don't support a custom MAC address: */
323 if (IS_OSM(card) || IS_OSX(card))
324 return (rc) ? rc : -EADDRNOTAVAIL;
325 eth_hw_addr_random(card->dev);
328 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len);
332 static void qeth_l2_register_dev_addr(struct qeth_card *card)
334 if (!is_valid_ether_addr(card->dev->dev_addr))
335 qeth_l2_request_initial_mac(card);
337 if (!IS_OSN(card) && !qeth_l2_send_setmac(card, card->dev->dev_addr))
338 card->info.dev_addr_is_registered = 1;
340 card->info.dev_addr_is_registered = 0;
343 static int qeth_l2_validate_addr(struct net_device *dev)
345 struct qeth_card *card = dev->ml_priv;
347 if (card->info.dev_addr_is_registered)
348 return eth_validate_addr(dev);
350 QETH_CARD_TEXT(card, 4, "nomacadr");
354 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
356 struct sockaddr *addr = p;
357 struct qeth_card *card = dev->ml_priv;
358 u8 old_addr[ETH_ALEN];
361 QETH_CARD_TEXT(card, 3, "setmac");
363 if (IS_OSM(card) || IS_OSX(card)) {
364 QETH_CARD_TEXT(card, 3, "setmcTYP");
367 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN);
368 if (!is_valid_ether_addr(addr->sa_data))
369 return -EADDRNOTAVAIL;
371 /* don't register the same address twice */
372 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) &&
373 card->info.dev_addr_is_registered)
376 /* add the new address, switch over, drop the old */
377 rc = qeth_l2_send_setmac(card, addr->sa_data);
380 ether_addr_copy(old_addr, dev->dev_addr);
381 ether_addr_copy(dev->dev_addr, addr->sa_data);
383 if (card->info.dev_addr_is_registered)
384 qeth_l2_remove_mac(card, old_addr);
385 card->info.dev_addr_is_registered = 1;
389 static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable)
394 QETH_CARD_TEXT(card, 3, "pmisc2br");
397 if (card->options.sbp.reflect_promisc_primary)
398 role = QETH_SBP_ROLE_PRIMARY;
400 role = QETH_SBP_ROLE_SECONDARY;
402 role = QETH_SBP_ROLE_NONE;
404 rc = qeth_bridgeport_setrole(card, role);
405 QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc);
407 card->options.sbp.role = role;
408 card->info.promisc_mode = enable;
412 static void qeth_l2_set_promisc_mode(struct qeth_card *card)
414 bool enable = card->dev->flags & IFF_PROMISC;
416 if (card->info.promisc_mode == enable)
419 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) {
420 qeth_setadp_promisc_mode(card, enable);
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);
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
433 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha)
435 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
436 struct qeth_mac *mac;
438 hash_for_each_possible(card->rx_mode_addrs, mac, hnode, mac_hash) {
439 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) {
440 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
445 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
449 ether_addr_copy(mac->mac_addr, ha->addr);
450 mac->disp_flag = QETH_DISP_ADDR_ADD;
452 hash_add(card->rx_mode_addrs, &mac->hnode, mac_hash);
455 static void qeth_l2_rx_mode_work(struct work_struct *work)
457 struct qeth_card *card = container_of(work, struct qeth_card,
459 struct net_device *dev = card->dev;
460 struct netdev_hw_addr *ha;
461 struct qeth_mac *mac;
462 struct hlist_node *tmp;
466 QETH_CARD_TEXT(card, 3, "setmulti");
468 netif_addr_lock_bh(dev);
469 netdev_for_each_mc_addr(ha, dev)
470 qeth_l2_add_mac(card, ha);
471 netdev_for_each_uc_addr(ha, dev)
472 qeth_l2_add_mac(card, ha);
473 netif_addr_unlock_bh(dev);
475 hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) {
476 switch (mac->disp_flag) {
477 case QETH_DISP_ADDR_DELETE:
478 qeth_l2_remove_mac(card, mac->mac_addr);
479 hash_del(&mac->hnode);
482 case QETH_DISP_ADDR_ADD:
483 rc = qeth_l2_write_mac(card, mac->mac_addr);
485 hash_del(&mac->hnode);
491 /* for next call to set_rx_mode(): */
492 mac->disp_flag = QETH_DISP_ADDR_DELETE;
496 qeth_l2_set_promisc_mode(card);
499 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
500 struct qeth_qdio_out_q *queue)
502 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
503 struct qeth_hdr *hdr = (struct qeth_hdr *)skb->data;
504 addr_t end = (addr_t)(skb->data + sizeof(*hdr));
505 addr_t start = (addr_t)skb->data;
506 unsigned int elements = 0;
507 unsigned int hd_len = 0;
510 if (skb->protocol == htons(ETH_P_IPV6))
511 return -EPROTONOSUPPORT;
513 if (qeth_get_elements_for_range(start, end) > 1) {
514 /* Misaligned HW header, move it to its own buffer element. */
515 hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
518 hd_len = sizeof(*hdr);
519 skb_copy_from_linear_data(skb, (char *)hdr, hd_len);
523 elements += qeth_count_elements(skb, hd_len);
524 if (elements > queue->max_elements) {
529 rc = qeth_do_send_packet(card, queue, skb, hdr, hd_len, hd_len,
533 kmem_cache_free(qeth_core_header_cache, hdr);
537 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
538 struct net_device *dev)
540 struct qeth_card *card = dev->ml_priv;
541 u16 txq = skb_get_queue_mapping(skb);
542 struct qeth_qdio_out_q *queue;
545 if (!skb_is_gso(skb))
546 qdisc_skb_cb(skb)->pkt_len = skb->len;
548 txq = qeth_iqd_translate_txq(dev, txq);
549 queue = card->qdio.out_qs[txq];
552 rc = qeth_l2_xmit_osn(card, skb, queue);
554 rc = qeth_xmit(card, skb, queue, qeth_get_ip_version(skb),
555 qeth_l2_fill_header);
560 QETH_TXQ_STAT_INC(queue, tx_dropped);
565 static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb,
566 struct net_device *sb_dev)
568 struct qeth_card *card = dev->ml_priv;
571 return qeth_iqd_select_queue(dev, skb,
572 qeth_get_ether_cast_type(skb),
574 if (qeth_uses_tx_prio_queueing(card))
575 return qeth_get_priority_queue(card, skb);
577 return netdev_pick_tx(dev, skb, sb_dev);
580 static void qeth_l2_set_rx_mode(struct net_device *dev)
582 struct qeth_card *card = dev->ml_priv;
584 schedule_work(&card->rx_mode_work);
588 * qeth_l2_pnso() - perform network subchannel operation
589 * @card: qeth_card structure pointer
590 * @oc: Operation Code
591 * @cnc: Boolean Change-Notification Control
592 * @cb: Callback function will be executed for each element
593 * of the address list
594 * @priv: Pointer to pass to the callback function.
596 * Collects network information in a network address list and calls the
597 * callback function for every entry in the list. If "change-notification-
598 * control" is set, further changes in the address list will be reported
599 * via the IPA command.
601 static int qeth_l2_pnso(struct qeth_card *card, u8 oc, int cnc,
602 void (*cb)(void *priv, struct chsc_pnso_naid_l2 *entry),
605 struct ccw_device *ddev = CARD_DDEV(card);
606 struct chsc_pnso_area *rr;
607 u32 prev_instance = 0;
608 int isfirstblock = 1;
612 rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL);
616 QETH_CARD_TEXT(card, 2, "PNSO");
617 /* on the first iteration, naihdr.resume_token will be zero */
618 rc = ccw_device_pnso(ddev, rr, oc, rr->naihdr.resume_token,
625 size = rr->naihdr.naids;
626 if (size != sizeof(struct chsc_pnso_naid_l2)) {
631 elems = (rr->response.length - sizeof(struct chsc_header) -
632 sizeof(struct chsc_pnso_naihdr)) / size;
634 if (!isfirstblock && (rr->naihdr.instance != prev_instance)) {
635 /* Inform the caller that they need to scrap */
636 /* the data that was already reported via cb */
641 prev_instance = rr->naihdr.instance;
642 for (i = 0; i < elems; i++)
643 (*cb)(priv, &rr->entries[i]);
644 } while ((rc == -EBUSY) || (!rc && /* list stored */
645 /* resume token is non-zero => list incomplete */
646 (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2)));
649 QETH_CARD_TEXT_(card, 2, "PNrp%04x", rr->response.code);
651 free_page((unsigned long)rr);
655 static bool qeth_is_my_net_if_token(struct qeth_card *card,
656 struct net_if_token *token)
658 return ((card->info.ddev_devno == token->devnum) &&
659 (card->info.cssid == token->cssid) &&
660 (card->info.iid == token->iid) &&
661 (card->info.ssid == token->ssid) &&
662 (card->info.chpid == token->chpid) &&
663 (card->info.chid == token->chid));
667 * qeth_l2_dev2br_fdb_notify() - update fdb of master bridge
668 * @card: qeth_card structure pointer
669 * @code: event bitmask: high order bit 0x80 set to
670 * 1 - removal of an object
671 * 0 - addition of an object
673 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC
674 * @token: "network token" structure identifying 'physical' location
676 * @addr_lnid: structure with MAC address and VLAN ID of the target
678 static void qeth_l2_dev2br_fdb_notify(struct qeth_card *card, u8 code,
679 struct net_if_token *token,
680 struct mac_addr_lnid *addr_lnid)
682 struct switchdev_notifier_fdb_info info;
683 u8 ntfy_mac[ETH_ALEN];
685 ether_addr_copy(ntfy_mac, addr_lnid->mac);
686 /* Ignore VLAN only changes */
687 if (!(code & IPA_ADDR_CHANGE_CODE_MACADDR))
689 /* Ignore mcast entries */
690 if (is_multicast_ether_addr(ntfy_mac))
692 /* Ignore my own addresses */
693 if (qeth_is_my_net_if_token(card, token))
696 info.addr = ntfy_mac;
697 /* don't report VLAN IDs */
699 info.added_by_user = false;
700 info.offloaded = true;
702 if (code & IPA_ADDR_CHANGE_CODE_REMOVAL) {
703 call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE,
704 card->dev, &info.info, NULL);
705 QETH_CARD_TEXT(card, 4, "andelmac");
706 QETH_CARD_TEXT_(card, 4,
707 "mc%012lx", ether_addr_to_u64(ntfy_mac));
709 call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE,
710 card->dev, &info.info, NULL);
711 QETH_CARD_TEXT(card, 4, "anaddmac");
712 QETH_CARD_TEXT_(card, 4,
713 "mc%012lx", ether_addr_to_u64(ntfy_mac));
717 static void qeth_l2_dev2br_an_set_cb(void *priv,
718 struct chsc_pnso_naid_l2 *entry)
720 u8 code = IPA_ADDR_CHANGE_CODE_MACADDR;
721 struct qeth_card *card = priv;
723 if (entry->addr_lnid.lnid < VLAN_N_VID)
724 code |= IPA_ADDR_CHANGE_CODE_VLANID;
725 qeth_l2_dev2br_fdb_notify(card, code,
726 (struct net_if_token *)&entry->nit,
727 (struct mac_addr_lnid *)&entry->addr_lnid);
731 * qeth_l2_dev2br_an_set() -
732 * Enable or disable 'dev to bridge network address notification'
733 * @card: qeth_card structure pointer
734 * @enable: Enable or disable 'dev to bridge network address notification'
736 * Returns negative errno-compatible error indication or 0 on success.
738 * On enable, emits a series of address notifications for all
739 * currently registered hosts.
741 * Must be called under rtnl_lock
743 static int qeth_l2_dev2br_an_set(struct qeth_card *card, bool enable)
748 QETH_CARD_TEXT(card, 2, "anseton");
749 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 1,
750 qeth_l2_dev2br_an_set_cb, card);
752 /* address notification enabled, but inconsistent
753 * addresses reported -> disable address notification
755 qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0,
758 QETH_CARD_TEXT(card, 2, "ansetoff");
759 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL);
765 static int qeth_l2_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
766 struct net_device *dev, u32 filter_mask,
769 struct qeth_priv *priv = netdev_priv(dev);
770 struct qeth_card *card = dev->ml_priv;
771 u16 mode = BRIDGE_MODE_UNDEF;
773 /* Do not even show qeth devs that cannot do bridge_setlink */
774 if (!priv->brport_hw_features || !netif_device_present(dev) ||
775 qeth_bridgeport_is_in_use(card))
778 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
779 mode, priv->brport_features,
780 priv->brport_hw_features,
781 nlflags, filter_mask, NULL);
784 static const struct nla_policy qeth_brport_policy[IFLA_BRPORT_MAX + 1] = {
785 [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 },
789 * qeth_l2_bridge_setlink() - set bridgeport attributes
791 * @nlh: netlink message header
792 * @flags: bridge flags (here: BRIDGE_FLAGS_SELF)
793 * @extack: extended ACK report struct
795 * Called under rtnl_lock
797 static int qeth_l2_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
798 u16 flags, struct netlink_ext_ack *extack)
800 struct qeth_priv *priv = netdev_priv(dev);
801 struct nlattr *bp_tb[IFLA_BRPORT_MAX + 1];
802 struct qeth_card *card = dev->ml_priv;
803 struct nlattr *attr, *nested_attr;
804 bool enable, has_protinfo = false;
808 if (!netif_device_present(dev))
810 if (!(priv->brport_hw_features))
813 nlmsg_for_each_attr(attr, nlh, sizeof(struct ifinfomsg), rem1) {
814 if (nla_type(attr) == IFLA_PROTINFO) {
815 rc = nla_parse_nested(bp_tb, IFLA_BRPORT_MAX, attr,
816 qeth_brport_policy, extack);
820 } else if (nla_type(attr) == IFLA_AF_SPEC) {
821 nla_for_each_nested(nested_attr, attr, rem2) {
822 if (nla_type(nested_attr) == IFLA_BRIDGE_FLAGS)
824 NL_SET_ERR_MSG_ATTR(extack, nested_attr,
825 "Unsupported attribute");
829 NL_SET_ERR_MSG_ATTR(extack, attr, "Unsupported attribute");
835 if (!bp_tb[IFLA_BRPORT_LEARNING_SYNC])
837 enable = !!nla_get_u8(bp_tb[IFLA_BRPORT_LEARNING_SYNC]);
839 if (enable == !!(priv->brport_features & BR_LEARNING_SYNC))
842 mutex_lock(&card->sbp_lock);
843 /* do not change anything if BridgePort is enabled */
844 if (qeth_bridgeport_is_in_use(card)) {
845 NL_SET_ERR_MSG(extack, "n/a (BridgePort)");
848 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
849 rc = qeth_l2_dev2br_an_set(card, true);
851 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
853 priv->brport_features |= BR_LEARNING_SYNC;
855 rc = qeth_l2_dev2br_an_set(card, false);
857 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
858 priv->brport_features ^= BR_LEARNING_SYNC;
859 qeth_l2_dev2br_fdb_flush(card);
862 mutex_unlock(&card->sbp_lock);
867 static const struct net_device_ops qeth_l2_netdev_ops = {
868 .ndo_open = qeth_open,
869 .ndo_stop = qeth_stop,
870 .ndo_get_stats64 = qeth_get_stats64,
871 .ndo_start_xmit = qeth_l2_hard_start_xmit,
872 .ndo_features_check = qeth_features_check,
873 .ndo_select_queue = qeth_l2_select_queue,
874 .ndo_validate_addr = qeth_l2_validate_addr,
875 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
876 .ndo_do_ioctl = qeth_do_ioctl,
877 .ndo_set_mac_address = qeth_l2_set_mac_address,
878 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
879 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
880 .ndo_tx_timeout = qeth_tx_timeout,
881 .ndo_fix_features = qeth_fix_features,
882 .ndo_set_features = qeth_set_features,
883 .ndo_bridge_getlink = qeth_l2_bridge_getlink,
884 .ndo_bridge_setlink = qeth_l2_bridge_setlink,
887 static const struct net_device_ops qeth_osn_netdev_ops = {
888 .ndo_open = qeth_open,
889 .ndo_stop = qeth_stop,
890 .ndo_get_stats64 = qeth_get_stats64,
891 .ndo_start_xmit = qeth_l2_hard_start_xmit,
892 .ndo_validate_addr = eth_validate_addr,
893 .ndo_tx_timeout = qeth_tx_timeout,
896 static int qeth_l2_setup_netdev(struct qeth_card *card)
899 card->dev->netdev_ops = &qeth_osn_netdev_ops;
900 card->dev->flags |= IFF_NOARP;
904 card->dev->needed_headroom = sizeof(struct qeth_hdr);
905 card->dev->netdev_ops = &qeth_l2_netdev_ops;
906 card->dev->priv_flags |= IFF_UNICAST_FLT;
909 card->dev->features |= NETIF_F_VLAN_CHALLENGED;
911 if (!IS_VM_NIC(card))
912 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
913 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
916 if (IS_OSD(card) && !IS_VM_NIC(card)) {
917 card->dev->features |= NETIF_F_SG;
918 /* OSA 3S and earlier has no RX/TX support */
919 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
920 card->dev->hw_features |= NETIF_F_IP_CSUM;
921 card->dev->vlan_features |= NETIF_F_IP_CSUM;
924 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
925 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
926 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
928 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) ||
929 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) {
930 card->dev->hw_features |= NETIF_F_RXCSUM;
931 card->dev->vlan_features |= NETIF_F_RXCSUM;
933 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
934 card->dev->hw_features |= NETIF_F_TSO;
935 card->dev->vlan_features |= NETIF_F_TSO;
937 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
938 card->dev->hw_features |= NETIF_F_TSO6;
939 card->dev->vlan_features |= NETIF_F_TSO6;
942 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) {
943 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso);
944 netif_keep_dst(card->dev);
945 netif_set_gso_max_size(card->dev,
946 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1));
950 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
951 return register_netdev(card->dev);
954 static void qeth_l2_trace_features(struct qeth_card *card)
956 /* Set BridgePort features */
957 QETH_CARD_TEXT(card, 2, "featuSBP");
958 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
959 sizeof(card->options.sbp.supported_funcs));
960 /* VNIC Characteristics features */
961 QETH_CARD_TEXT(card, 2, "feaVNICC");
962 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
963 sizeof(card->options.vnicc.sup_chars));
966 static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card)
968 if (!card->options.sbp.reflect_promisc &&
969 card->options.sbp.role != QETH_SBP_ROLE_NONE) {
970 /* Conditional to avoid spurious error messages */
971 qeth_bridgeport_setrole(card, card->options.sbp.role);
972 /* Let the callback function refresh the stored role value. */
973 qeth_bridgeport_query_ports(card, &card->options.sbp.role,
976 if (card->options.sbp.hostnotification) {
977 if (qeth_bridgeport_an_set(card, 1))
978 card->options.sbp.hostnotification = 0;
983 * qeth_l2_detect_dev2br_support() -
984 * Detect whether this card supports 'dev to bridge fdb network address
985 * change notification' and thus can support the learning_sync bridgeport
987 * @card: qeth_card structure pointer
989 * This is a destructive test and must be called before dev2br or
990 * bridgeport address notification is enabled!
992 static void qeth_l2_detect_dev2br_support(struct qeth_card *card)
994 struct qeth_priv *priv = netdev_priv(card->dev);
995 bool dev2br_supported;
998 QETH_CARD_TEXT(card, 2, "d2brsup");
1002 /* dev2br requires valid cssid,iid,chid */
1003 if (!card->info.ids_valid) {
1004 dev2br_supported = false;
1005 } else if (css_general_characteristics.enarf) {
1006 dev2br_supported = true;
1008 /* Old machines don't have the feature bit:
1009 * Probe by testing whether a disable succeeds
1011 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL);
1012 dev2br_supported = !rc;
1014 QETH_CARD_TEXT_(card, 2, "D2Bsup%02x", dev2br_supported);
1016 if (dev2br_supported)
1017 priv->brport_hw_features |= BR_LEARNING_SYNC;
1019 priv->brport_hw_features &= ~BR_LEARNING_SYNC;
1022 static void qeth_l2_enable_brport_features(struct qeth_card *card)
1024 struct qeth_priv *priv = netdev_priv(card->dev);
1027 if (priv->brport_features & BR_LEARNING_SYNC) {
1028 if (priv->brport_hw_features & BR_LEARNING_SYNC) {
1029 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1030 rc = qeth_l2_dev2br_an_set(card, true);
1031 if (rc == -EAGAIN) {
1032 /* Recoverable error, retry once */
1033 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1034 qeth_l2_dev2br_fdb_flush(card);
1035 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO);
1036 rc = qeth_l2_dev2br_an_set(card, true);
1039 netdev_err(card->dev,
1040 "failed to enable bridge learning_sync: %d\n",
1042 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1043 qeth_l2_dev2br_fdb_flush(card);
1044 priv->brport_features ^= BR_LEARNING_SYNC;
1047 dev_warn(&card->gdev->dev,
1048 "bridge learning_sync not supported\n");
1049 priv->brport_features ^= BR_LEARNING_SYNC;
1054 #ifdef CONFIG_QETH_OSN
1055 static void qeth_osn_assist_cb(struct qeth_card *card,
1056 struct qeth_cmd_buffer *iob,
1057 unsigned int data_length)
1059 qeth_notify_cmd(iob, 0);
1063 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1065 struct qeth_cmd_buffer *iob;
1066 struct qeth_card *card;
1072 card = dev->ml_priv;
1075 QETH_CARD_TEXT(card, 2, "osnsdmc");
1076 if (!qeth_card_hw_is_reachable(card))
1079 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_len, 1,
1084 qeth_prepare_ipa_cmd(card, iob, (u16) data_len, NULL);
1086 memcpy(__ipa_cmd(iob), data, data_len);
1087 iob->callback = qeth_osn_assist_cb;
1088 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
1090 EXPORT_SYMBOL(qeth_osn_assist);
1092 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1093 int (*assist_cb)(struct net_device *, void *),
1094 int (*data_cb)(struct sk_buff *))
1096 struct qeth_card *card;
1100 memcpy(&devno, read_dev_no, 2);
1101 sprintf(bus_id, "0.0.%04x", devno);
1102 card = qeth_get_card_by_busid(bus_id);
1103 if (!card || !IS_OSN(card))
1107 QETH_CARD_TEXT(card, 2, "osnreg");
1108 if ((assist_cb == NULL) || (data_cb == NULL))
1110 card->osn_info.assist_cb = assist_cb;
1111 card->osn_info.data_cb = data_cb;
1114 EXPORT_SYMBOL(qeth_osn_register);
1116 void qeth_osn_deregister(struct net_device *dev)
1118 struct qeth_card *card;
1122 card = dev->ml_priv;
1125 QETH_CARD_TEXT(card, 2, "osndereg");
1126 card->osn_info.assist_cb = NULL;
1127 card->osn_info.data_cb = NULL;
1130 EXPORT_SYMBOL(qeth_osn_deregister);
1133 /* SETBRIDGEPORT support, async notifications */
1135 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1138 * qeth_bridge_emit_host_event() - bridgeport address change notification
1139 * @card: qeth_card structure pointer, for udev events.
1140 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1141 * and reset token and addr_lnid are unused and may be NULL.
1142 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1143 * object, 0 - addition of an object.
1144 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1145 * @token: "network token" structure identifying physical address of the port.
1146 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1148 * This function is called when registrations and deregistrations are
1149 * reported by the hardware, and also when notifications are enabled -
1150 * for all currently registered addresses.
1152 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1153 enum qeth_an_event_type evtype,
1155 struct net_if_token *token,
1156 struct mac_addr_lnid *addr_lnid)
1163 case anev_reg_unreg:
1164 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1165 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1166 ? "deregister" : "register");
1167 env[i] = str[i]; i++;
1168 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1169 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1171 env[i] = str[i]; i++;
1173 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1174 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1176 env[i] = str[i]; i++;
1178 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1179 token->cssid, token->ssid, token->devnum);
1180 env[i] = str[i]; i++;
1181 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1182 env[i] = str[i]; i++;
1183 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1185 env[i] = str[i]; i++;
1186 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1187 env[i] = str[i]; i++;
1190 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1191 env[i] = str[i]; i++;
1194 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1195 env[i] = str[i]; i++;
1199 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1202 struct qeth_bridge_state_data {
1203 struct work_struct worker;
1204 struct qeth_card *card;
1209 static void qeth_bridge_state_change_worker(struct work_struct *work)
1211 struct qeth_bridge_state_data *data =
1212 container_of(work, struct qeth_bridge_state_data, worker);
1213 char env_locrem[32];
1223 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1224 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1225 (data->role == QETH_SBP_ROLE_NONE) ? "none" :
1226 (data->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1227 (data->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1229 snprintf(env_state, sizeof(env_state), "STATE=%s",
1230 (data->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1231 (data->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1232 (data->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1234 kobject_uevent_env(&data->card->gdev->dev.kobj,
1239 static void qeth_bridge_state_change(struct qeth_card *card,
1240 struct qeth_ipa_cmd *cmd)
1242 struct qeth_sbp_port_data *qports = &cmd->data.sbp.data.port_data;
1243 struct qeth_bridge_state_data *data;
1245 QETH_CARD_TEXT(card, 2, "brstchng");
1246 if (qports->num_entries == 0) {
1247 QETH_CARD_TEXT(card, 2, "BPempty");
1250 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1251 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1255 data = kzalloc(sizeof(*data), GFP_ATOMIC);
1257 QETH_CARD_TEXT(card, 2, "BPSalloc");
1260 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1262 /* Information for the local port: */
1263 data->role = qports->entry[0].role;
1264 data->state = qports->entry[0].state;
1266 queue_work(card->event_wq, &data->worker);
1269 struct qeth_addr_change_data {
1270 struct delayed_work dwork;
1271 struct qeth_card *card;
1272 struct qeth_ipacmd_addr_change ac_event;
1275 static void qeth_l2_dev2br_worker(struct work_struct *work)
1277 struct delayed_work *dwork = to_delayed_work(work);
1278 struct qeth_addr_change_data *data;
1279 struct qeth_card *card;
1280 struct qeth_priv *priv;
1284 data = container_of(dwork, struct qeth_addr_change_data, dwork);
1286 priv = netdev_priv(card->dev);
1288 QETH_CARD_TEXT(card, 4, "dev2brew");
1290 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE)
1293 /* Potential re-config in progress, try again later: */
1294 if (!rtnl_trylock()) {
1295 queue_delayed_work(card->event_wq, dwork,
1296 msecs_to_jiffies(100));
1299 if (!netif_device_present(card->dev))
1302 if (data->ac_event.lost_event_mask) {
1304 "Address change notification overflow on device %x\n",
1306 /* Card fdb and bridge fdb are out of sync, card has stopped
1307 * notifications (no need to drain_workqueue). Purge all
1308 * 'extern_learn' entries from the parent bridge and restart
1309 * the notifications.
1311 qeth_l2_dev2br_fdb_flush(card);
1312 rc = qeth_l2_dev2br_an_set(card, true);
1314 /* TODO: if we want to retry after -EAGAIN, be
1315 * aware there could be stale entries in the
1316 * workqueue now, that need to be drained.
1317 * For now we give up:
1319 netdev_err(card->dev,
1320 "bridge learning_sync failed to recover: %d\n",
1322 WRITE_ONCE(card->info.pnso_mode,
1324 /* To remove fdb entries reported by an_set: */
1325 qeth_l2_dev2br_fdb_flush(card);
1326 priv->brport_features ^= BR_LEARNING_SYNC;
1329 "Address Notification resynced on device %x\n",
1333 for (i = 0; i < data->ac_event.num_entries; i++) {
1334 struct qeth_ipacmd_addr_change_entry *entry =
1335 &data->ac_event.entry[i];
1336 qeth_l2_dev2br_fdb_notify(card,
1350 static void qeth_addr_change_event_worker(struct work_struct *work)
1352 struct delayed_work *dwork = to_delayed_work(work);
1353 struct qeth_addr_change_data *data;
1354 struct qeth_card *card;
1357 data = container_of(dwork, struct qeth_addr_change_data, dwork);
1360 QETH_CARD_TEXT(data->card, 4, "adrchgew");
1362 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE)
1365 if (data->ac_event.lost_event_mask) {
1366 /* Potential re-config in progress, try again later: */
1367 if (!mutex_trylock(&card->sbp_lock)) {
1368 queue_delayed_work(card->event_wq, dwork,
1369 msecs_to_jiffies(100));
1373 dev_info(&data->card->gdev->dev,
1374 "Address change notification stopped on %s (%s)\n",
1375 data->card->dev->name,
1376 (data->ac_event.lost_event_mask == 0x01)
1378 : (data->ac_event.lost_event_mask == 0x02)
1379 ? "Bridge port state change"
1380 : "Unknown reason");
1382 data->card->options.sbp.hostnotification = 0;
1383 card->info.pnso_mode = QETH_PNSO_NONE;
1384 mutex_unlock(&data->card->sbp_lock);
1385 qeth_bridge_emit_host_event(data->card, anev_abort,
1388 for (i = 0; i < data->ac_event.num_entries; i++) {
1389 struct qeth_ipacmd_addr_change_entry *entry =
1390 &data->ac_event.entry[i];
1391 qeth_bridge_emit_host_event(data->card,
1402 static void qeth_addr_change_event(struct qeth_card *card,
1403 struct qeth_ipa_cmd *cmd)
1405 struct qeth_ipacmd_addr_change *hostevs =
1406 &cmd->data.addrchange;
1407 struct qeth_addr_change_data *data;
1410 if (card->info.pnso_mode == QETH_PNSO_NONE)
1413 QETH_CARD_TEXT(card, 4, "adrchgev");
1414 if (cmd->hdr.return_code != 0x0000) {
1415 if (cmd->hdr.return_code == 0x0010) {
1416 if (hostevs->lost_event_mask == 0x00)
1417 hostevs->lost_event_mask = 0xff;
1419 QETH_CARD_TEXT_(card, 2, "ACHN%04x",
1420 cmd->hdr.return_code);
1424 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1425 hostevs->num_entries;
1426 data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize,
1429 QETH_CARD_TEXT(card, 2, "ACNalloc");
1432 if (card->info.pnso_mode == QETH_PNSO_BRIDGEPORT)
1433 INIT_DELAYED_WORK(&data->dwork, qeth_addr_change_event_worker);
1435 INIT_DELAYED_WORK(&data->dwork, qeth_l2_dev2br_worker);
1437 memcpy(&data->ac_event, hostevs,
1438 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1439 queue_delayed_work(card->event_wq, &data->dwork, 0);
1442 /* SETBRIDGEPORT support; sending commands */
1444 struct _qeth_sbp_cbctl {
1448 enum qeth_sbp_roles *role;
1449 enum qeth_sbp_states *state;
1454 static int qeth_bridgeport_makerc(struct qeth_card *card,
1455 struct qeth_ipa_cmd *cmd)
1457 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp;
1458 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code;
1459 u16 ipa_rc = cmd->hdr.return_code;
1460 u16 sbp_rc = sbp->hdr.return_code;
1463 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS)
1466 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) ||
1467 (!IS_IQD(card) && ipa_rc == sbp_rc)) {
1469 case IPA_RC_SUCCESS:
1472 case IPA_RC_L2_UNSUPPORTED_CMD:
1473 case IPA_RC_UNSUPPORTED_COMMAND:
1476 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1477 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1478 rc = -ENODEV; /* maybe not the best code here? */
1479 dev_err(&card->gdev->dev,
1480 "The device is not configured as a Bridge Port\n");
1482 case IPA_RC_SBP_OSA_OS_MISMATCH:
1483 case IPA_RC_SBP_IQD_OS_MISMATCH:
1485 dev_err(&card->gdev->dev,
1486 "A Bridge Port is already configured by a different operating system\n");
1488 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1489 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1491 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1493 dev_err(&card->gdev->dev,
1494 "The LAN already has a primary Bridge Port\n");
1496 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1498 dev_err(&card->gdev->dev,
1499 "The device is already a primary Bridge Port\n");
1505 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1506 case IPA_RC_SBP_IQD_CURRENT_SECOND:
1508 dev_err(&card->gdev->dev,
1509 "The device is already a secondary Bridge Port\n");
1511 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1512 case IPA_RC_SBP_IQD_LIMIT_SECOND:
1514 dev_err(&card->gdev->dev,
1515 "The LAN cannot have more secondary Bridge Ports\n");
1517 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1518 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1520 dev_err(&card->gdev->dev,
1521 "The device is already a primary Bridge Port\n");
1523 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1524 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1526 dev_err(&card->gdev->dev,
1527 "The device is not authorized to be a Bridge Port\n");
1534 case IPA_RC_NOTSUPP:
1537 case IPA_RC_UNSUPPORTED_COMMAND:
1546 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc);
1547 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc);
1552 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1553 enum qeth_ipa_sbp_cmd sbp_cmd,
1554 unsigned int data_length)
1556 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD :
1557 IPA_CMD_SETBRIDGEPORT_OSA;
1558 struct qeth_ipacmd_sbp_hdr *hdr;
1559 struct qeth_cmd_buffer *iob;
1561 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE,
1563 offsetof(struct qeth_ipacmd_setbridgeport,
1568 hdr = &__ipa_cmd(iob)->data.sbp.hdr;
1569 hdr->cmdlength = sizeof(*hdr) + data_length;
1570 hdr->command_code = sbp_cmd;
1571 hdr->used_total = 1;
1576 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1577 struct qeth_reply *reply, unsigned long data)
1579 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1580 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1583 QETH_CARD_TEXT(card, 2, "brqsupcb");
1584 rc = qeth_bridgeport_makerc(card, cmd);
1588 cbctl->data.supported =
1589 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1594 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1595 * @card: qeth_card structure pointer.
1597 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1598 * strucutre: card->options.sbp.supported_funcs.
1600 static void qeth_bridgeport_query_support(struct qeth_card *card)
1602 struct qeth_cmd_buffer *iob;
1603 struct _qeth_sbp_cbctl cbctl;
1605 QETH_CARD_TEXT(card, 2, "brqsuppo");
1606 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1607 SBP_DATA_SIZEOF(query_cmds_supp));
1611 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1613 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1614 card->options.sbp.supported_funcs = 0;
1617 card->options.sbp.supported_funcs = cbctl.data.supported;
1620 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1621 struct qeth_reply *reply, unsigned long data)
1623 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1624 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1625 struct qeth_sbp_port_data *qports;
1628 QETH_CARD_TEXT(card, 2, "brqprtcb");
1629 rc = qeth_bridgeport_makerc(card, cmd);
1633 qports = &cmd->data.sbp.data.port_data;
1634 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1635 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1638 /* first entry contains the state of the local port */
1639 if (qports->num_entries > 0) {
1640 if (cbctl->data.qports.role)
1641 *cbctl->data.qports.role = qports->entry[0].role;
1642 if (cbctl->data.qports.state)
1643 *cbctl->data.qports.state = qports->entry[0].state;
1649 * qeth_bridgeport_query_ports() - query local bridgeport status.
1650 * @card: qeth_card structure pointer.
1651 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1652 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1654 * Returns negative errno-compatible error indication or 0 on success.
1656 * 'role' and 'state' are not updated in case of hardware operation failure.
1658 int qeth_bridgeport_query_ports(struct qeth_card *card,
1659 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1661 struct qeth_cmd_buffer *iob;
1662 struct _qeth_sbp_cbctl cbctl = {
1671 QETH_CARD_TEXT(card, 2, "brqports");
1672 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1674 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1678 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1682 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1683 struct qeth_reply *reply, unsigned long data)
1685 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1687 QETH_CARD_TEXT(card, 2, "brsetrcb");
1688 return qeth_bridgeport_makerc(card, cmd);
1692 * qeth_bridgeport_setrole() - Assign primary role to the port.
1693 * @card: qeth_card structure pointer.
1694 * @role: Role to assign.
1696 * Returns negative errno-compatible error indication or 0 on success.
1698 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1700 struct qeth_cmd_buffer *iob;
1701 enum qeth_ipa_sbp_cmd setcmd;
1702 unsigned int cmdlength = 0;
1704 QETH_CARD_TEXT(card, 2, "brsetrol");
1706 case QETH_SBP_ROLE_NONE:
1707 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1709 case QETH_SBP_ROLE_PRIMARY:
1710 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1711 cmdlength = SBP_DATA_SIZEOF(set_primary);
1713 case QETH_SBP_ROLE_SECONDARY:
1714 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1719 if (!(card->options.sbp.supported_funcs & setcmd))
1721 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1725 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL);
1728 static void qeth_bridgeport_an_set_cb(void *priv,
1729 struct chsc_pnso_naid_l2 *entry)
1731 struct qeth_card *card = (struct qeth_card *)priv;
1734 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1735 if (entry->addr_lnid.lnid < VLAN_N_VID)
1736 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1737 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1738 (struct net_if_token *)&entry->nit,
1739 (struct mac_addr_lnid *)&entry->addr_lnid);
1743 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1744 * @card: qeth_card structure pointer.
1745 * @enable: 0 - disable, non-zero - enable notifications
1747 * Returns negative errno-compatible error indication or 0 on success.
1749 * On enable, emits a series of address notifications udev events for all
1750 * currently registered hosts.
1752 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1756 if (!card->options.sbp.supported_funcs)
1760 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1761 qeth_l2_set_pnso_mode(card, QETH_PNSO_BRIDGEPORT);
1762 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 1,
1763 qeth_bridgeport_an_set_cb, card);
1765 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1767 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 0, NULL, NULL);
1768 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
1773 /* VNIC Characteristics support */
1775 /* handle VNICC IPA command return codes; convert to error codes */
1776 static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc)
1781 case IPA_RC_SUCCESS:
1783 case IPA_RC_L2_UNSUPPORTED_CMD:
1784 case IPA_RC_NOTSUPP:
1787 case IPA_RC_VNICC_OOSEQ:
1790 case IPA_RC_VNICC_VNICBP:
1793 case IPA_RC_L2_ADDR_TABLE_FULL:
1796 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
1803 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
1807 /* generic VNICC request call back */
1808 static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
1809 struct qeth_reply *reply,
1812 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1813 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
1814 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command;
1816 QETH_CARD_TEXT(card, 2, "vniccrcb");
1817 if (cmd->hdr.return_code)
1818 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code);
1819 /* return results to caller */
1820 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported;
1821 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled;
1823 if (sub_cmd == IPA_VNICC_QUERY_CMDS)
1824 *(u32 *)reply->param = rep->data.query_cmds.sup_cmds;
1825 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT)
1826 *(u32 *)reply->param = rep->data.getset_timeout.timeout;
1831 static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card,
1833 unsigned int data_length)
1835 struct qeth_ipacmd_vnicc_hdr *hdr;
1836 struct qeth_cmd_buffer *iob;
1838 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE,
1840 offsetof(struct qeth_ipacmd_vnicc, data));
1844 hdr = &__ipa_cmd(iob)->data.vnicc.hdr;
1845 hdr->data_length = sizeof(*hdr) + data_length;
1846 hdr->sub_command = vnicc_cmd;
1850 /* VNICC query VNIC characteristics request */
1851 static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
1853 struct qeth_cmd_buffer *iob;
1855 QETH_CARD_TEXT(card, 2, "vniccqch");
1856 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0);
1860 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1863 /* VNICC query sub commands request */
1864 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
1867 struct qeth_cmd_buffer *iob;
1869 QETH_CARD_TEXT(card, 2, "vniccqcm");
1870 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS,
1871 VNICC_DATA_SIZEOF(query_cmds));
1875 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char;
1877 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds);
1880 /* VNICC enable/disable characteristic request */
1881 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
1884 struct qeth_cmd_buffer *iob;
1886 QETH_CARD_TEXT(card, 2, "vniccedc");
1887 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char));
1891 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char;
1893 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1896 /* VNICC get/set timeout for characteristic request */
1897 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
1898 u32 cmd, u32 *timeout)
1900 struct qeth_vnicc_getset_timeout *getset_timeout;
1901 struct qeth_cmd_buffer *iob;
1903 QETH_CARD_TEXT(card, 2, "vniccgst");
1904 iob = qeth_l2_vnicc_build_cmd(card, cmd,
1905 VNICC_DATA_SIZEOF(getset_timeout));
1909 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout;
1910 getset_timeout->vnic_char = vnicc;
1912 if (cmd == IPA_VNICC_SET_TIMEOUT)
1913 getset_timeout->timeout = *timeout;
1915 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, timeout);
1918 /* recover user timeout setting */
1919 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
1922 if (card->options.vnicc.sup_chars & vnicc &&
1923 card->options.vnicc.getset_timeout_sup & vnicc &&
1924 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
1927 *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
1931 /* set current VNICC flag state; called from sysfs store function */
1932 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
1937 QETH_CARD_TEXT(card, 2, "vniccsch");
1939 /* check if characteristic and enable/disable are supported */
1940 if (!(card->options.vnicc.sup_chars & vnicc) ||
1941 !(card->options.vnicc.set_char_sup & vnicc))
1944 if (qeth_bridgeport_is_in_use(card))
1947 /* set enable/disable command and store wanted characteristic */
1949 cmd = IPA_VNICC_ENABLE;
1950 card->options.vnicc.wanted_chars |= vnicc;
1952 cmd = IPA_VNICC_DISABLE;
1953 card->options.vnicc.wanted_chars &= ~vnicc;
1956 /* do we need to do anything? */
1957 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
1960 /* if card is not ready, simply stop here */
1961 if (!qeth_card_hw_is_reachable(card)) {
1963 card->options.vnicc.cur_chars |= vnicc;
1965 card->options.vnicc.cur_chars &= ~vnicc;
1969 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
1971 card->options.vnicc.wanted_chars =
1972 card->options.vnicc.cur_chars;
1974 /* successful online VNICC change; handle special cases */
1975 if (state && vnicc == QETH_VNICC_RX_BCAST)
1976 card->options.vnicc.rx_bcast_enabled = true;
1977 if (!state && vnicc == QETH_VNICC_LEARNING)
1978 qeth_l2_vnicc_recover_timeout(card, vnicc,
1979 &card->options.vnicc.learning_timeout);
1985 /* get current VNICC flag state; called from sysfs show function */
1986 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
1990 QETH_CARD_TEXT(card, 2, "vniccgch");
1992 /* check if characteristic is supported */
1993 if (!(card->options.vnicc.sup_chars & vnicc))
1996 if (qeth_bridgeport_is_in_use(card))
1999 /* if card is ready, query current VNICC state */
2000 if (qeth_card_hw_is_reachable(card))
2001 rc = qeth_l2_vnicc_query_chars(card);
2003 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
2007 /* set VNICC timeout; called from sysfs store function. Currently, only learning
2010 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
2014 QETH_CARD_TEXT(card, 2, "vniccsto");
2016 /* check if characteristic and set_timeout are supported */
2017 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2018 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2021 if (qeth_bridgeport_is_in_use(card))
2024 /* do we need to do anything? */
2025 if (card->options.vnicc.learning_timeout == timeout)
2028 /* if card is not ready, simply store the value internally and return */
2029 if (!qeth_card_hw_is_reachable(card)) {
2030 card->options.vnicc.learning_timeout = timeout;
2034 /* send timeout value to card; if successful, store value internally */
2035 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2036 IPA_VNICC_SET_TIMEOUT, &timeout);
2038 card->options.vnicc.learning_timeout = timeout;
2043 /* get current VNICC timeout; called from sysfs show function. Currently, only
2044 * learning supports timeout
2046 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
2050 QETH_CARD_TEXT(card, 2, "vniccgto");
2052 /* check if characteristic and get_timeout are supported */
2053 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2054 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2057 if (qeth_bridgeport_is_in_use(card))
2060 /* if card is ready, get timeout. Otherwise, just return stored value */
2061 *timeout = card->options.vnicc.learning_timeout;
2062 if (qeth_card_hw_is_reachable(card))
2063 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2064 IPA_VNICC_GET_TIMEOUT,
2070 /* check if VNICC is currently enabled */
2071 static bool _qeth_l2_vnicc_is_in_use(struct qeth_card *card)
2073 if (!card->options.vnicc.sup_chars)
2075 /* default values are only OK if rx_bcast was not enabled by user
2076 * or the card is offline.
2078 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
2079 if (!card->options.vnicc.rx_bcast_enabled ||
2080 !qeth_card_hw_is_reachable(card))
2087 * qeth_bridgeport_allowed - are any qeth_bridgeport functions allowed?
2088 * @card: qeth_card structure pointer
2090 * qeth_bridgeport functionality is mutually exclusive with usage of the
2091 * VNIC Characteristics and dev2br address notifications
2093 bool qeth_bridgeport_allowed(struct qeth_card *card)
2095 struct qeth_priv *priv = netdev_priv(card->dev);
2097 return (!_qeth_l2_vnicc_is_in_use(card) &&
2098 !(priv->brport_features & BR_LEARNING_SYNC));
2101 /* recover user characteristic setting */
2102 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2105 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2107 if (card->options.vnicc.sup_chars & vnicc &&
2108 card->options.vnicc.set_char_sup & vnicc &&
2109 !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2111 card->options.vnicc.wanted_chars &= ~vnicc;
2112 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2116 /* (re-)initialize VNICC */
2117 static void qeth_l2_vnicc_init(struct qeth_card *card)
2119 u32 *timeout = &card->options.vnicc.learning_timeout;
2120 bool enable, error = false;
2121 unsigned int chars_len, i;
2122 unsigned long chars_tmp;
2123 u32 sup_cmds, vnicc;
2125 QETH_CARD_TEXT(card, 2, "vniccini");
2126 /* reset rx_bcast */
2127 card->options.vnicc.rx_bcast_enabled = 0;
2128 /* initial query and storage of VNIC characteristics */
2129 if (qeth_l2_vnicc_query_chars(card)) {
2130 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2131 *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
2132 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2133 /* fail quietly if user didn't change the default config */
2134 card->options.vnicc.sup_chars = 0;
2135 card->options.vnicc.cur_chars = 0;
2136 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2139 /* get supported commands for each supported characteristic */
2140 chars_tmp = card->options.vnicc.sup_chars;
2141 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2142 for_each_set_bit(i, &chars_tmp, chars_len) {
2144 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) {
2148 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) &&
2149 (sup_cmds & IPA_VNICC_GET_TIMEOUT))
2150 card->options.vnicc.getset_timeout_sup |= vnicc;
2152 card->options.vnicc.getset_timeout_sup &= ~vnicc;
2153 if ((sup_cmds & IPA_VNICC_ENABLE) &&
2154 (sup_cmds & IPA_VNICC_DISABLE))
2155 card->options.vnicc.set_char_sup |= vnicc;
2157 card->options.vnicc.set_char_sup &= ~vnicc;
2159 /* enforce assumed default values and recover settings, if changed */
2160 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2162 /* Change chars, if necessary */
2163 chars_tmp = card->options.vnicc.wanted_chars ^
2164 card->options.vnicc.cur_chars;
2165 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2166 for_each_set_bit(i, &chars_tmp, chars_len) {
2168 enable = card->options.vnicc.wanted_chars & vnicc;
2169 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2172 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2175 /* configure default values of VNIC characteristics */
2176 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2178 /* characteristics values */
2179 card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2180 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
2181 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2182 /* supported commands */
2183 card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
2184 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
2185 /* settings wanted by users */
2186 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2189 static const struct device_type qeth_l2_devtype = {
2190 .name = "qeth_layer2",
2191 .groups = qeth_l2_attr_groups,
2194 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
2196 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2200 dev_notice(&gdev->dev, "OSN support will be dropped in 2021\n");
2202 qeth_l2_vnicc_set_defaults(card);
2203 mutex_init(&card->sbp_lock);
2205 if (gdev->dev.type == &qeth_generic_devtype) {
2206 rc = qeth_l2_create_device_attributes(&gdev->dev);
2211 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work);
2215 static void qeth_l2_remove_device(struct ccwgroup_device *gdev)
2217 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2219 if (gdev->dev.type == &qeth_generic_devtype)
2220 qeth_l2_remove_device_attributes(&gdev->dev);
2221 qeth_set_allowed_threads(card, 0, 1);
2222 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2224 if (gdev->state == CCWGROUP_ONLINE)
2225 qeth_set_offline(card, false);
2227 cancel_work_sync(&card->close_dev_work);
2228 if (card->dev->reg_state == NETREG_REGISTERED)
2229 unregister_netdev(card->dev);
2232 static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok)
2234 struct net_device *dev = card->dev;
2237 /* query before bridgeport_notification may be enabled */
2238 qeth_l2_detect_dev2br_support(card);
2240 mutex_lock(&card->sbp_lock);
2241 qeth_bridgeport_query_support(card);
2242 if (card->options.sbp.supported_funcs) {
2243 qeth_l2_setup_bridgeport_attrs(card);
2244 dev_info(&card->gdev->dev,
2245 "The device represents a Bridge Capable Port\n");
2247 mutex_unlock(&card->sbp_lock);
2249 qeth_l2_register_dev_addr(card);
2251 /* for the rx_bcast characteristic, init VNICC after setmac */
2252 qeth_l2_vnicc_init(card);
2254 qeth_l2_trace_features(card);
2257 QETH_CARD_TEXT(card, 2, "softsetp");
2259 card->state = CARD_STATE_SOFTSETUP;
2261 qeth_set_allowed_threads(card, 0xffffffff, 0);
2263 if (dev->reg_state != NETREG_REGISTERED) {
2264 rc = qeth_l2_setup_netdev(card);
2269 netif_carrier_on(dev);
2272 rc = qeth_set_real_num_tx_queues(card,
2273 qeth_tx_actual_queues(card));
2276 goto err_set_queues;
2280 netif_carrier_on(dev);
2282 netif_carrier_off(dev);
2284 netif_device_attach(dev);
2285 qeth_enable_hw_features(dev);
2286 qeth_l2_enable_brport_features(card);
2288 if (card->info.open_when_online) {
2289 card->info.open_when_online = 0;
2290 dev_open(dev, NULL);
2298 qeth_set_allowed_threads(card, 0, 1);
2299 card->state = CARD_STATE_DOWN;
2303 static void qeth_l2_set_offline(struct qeth_card *card)
2305 struct qeth_priv *priv = netdev_priv(card->dev);
2307 qeth_set_allowed_threads(card, 0, 1);
2308 qeth_l2_drain_rx_mode_cache(card);
2310 if (card->state == CARD_STATE_SOFTSETUP)
2311 card->state = CARD_STATE_DOWN;
2313 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE);
2314 if (priv->brport_features & BR_LEARNING_SYNC) {
2316 qeth_l2_dev2br_fdb_flush(card);
2321 /* Returns zero if the command is successfully "consumed" */
2322 static int qeth_l2_control_event(struct qeth_card *card,
2323 struct qeth_ipa_cmd *cmd)
2325 switch (cmd->hdr.command) {
2326 case IPA_CMD_SETBRIDGEPORT_OSA:
2327 case IPA_CMD_SETBRIDGEPORT_IQD:
2328 if (cmd->data.sbp.hdr.command_code ==
2329 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
2330 qeth_bridge_state_change(card, cmd);
2335 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
2336 qeth_addr_change_event(card, cmd);
2343 struct qeth_discipline qeth_l2_discipline = {
2344 .devtype = &qeth_l2_devtype,
2345 .setup = qeth_l2_probe_device,
2346 .remove = qeth_l2_remove_device,
2347 .set_online = qeth_l2_set_online,
2348 .set_offline = qeth_l2_set_offline,
2350 .control_event_handler = qeth_l2_control_event,
2352 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
2354 static int __init qeth_l2_init(void)
2356 pr_info("register layer 2 discipline\n");
2360 static void __exit qeth_l2_exit(void)
2362 pr_info("unregister layer 2 discipline\n");
2365 module_init(qeth_l2_init);
2366 module_exit(qeth_l2_exit);
2367 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2368 MODULE_DESCRIPTION("qeth layer 2 discipline");
2369 MODULE_LICENSE("GPL");