1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright IBM Corp. 2007, 2009
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/list.h>
21 #include <linux/hash.h>
22 #include <linux/hashtable.h>
24 #include <asm/setup.h>
25 #include "qeth_core.h"
28 static void qeth_bridgeport_query_support(struct qeth_card *card);
29 static void qeth_bridge_state_change(struct qeth_card *card,
30 struct qeth_ipa_cmd *cmd);
31 static void qeth_addr_change_event(struct qeth_card *card,
32 struct qeth_ipa_cmd *cmd);
33 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card);
34 static void qeth_l2_vnicc_init(struct qeth_card *card);
35 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
38 static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode)
43 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
48 case IPA_RC_L2_UNSUPPORTED_CMD:
51 case IPA_RC_L2_ADDR_TABLE_FULL:
54 case IPA_RC_L2_DUP_MAC:
55 case IPA_RC_L2_DUP_LAYER3_MAC:
58 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
59 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
62 case IPA_RC_L2_MAC_NOT_FOUND:
72 static int qeth_l2_send_setdelmac_cb(struct qeth_card *card,
73 struct qeth_reply *reply,
76 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
78 return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code);
81 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
82 enum qeth_ipa_cmds ipacmd)
84 struct qeth_ipa_cmd *cmd;
85 struct qeth_cmd_buffer *iob;
87 QETH_CARD_TEXT(card, 2, "L2sdmac");
88 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
89 IPA_DATA_SIZEOF(setdelmac));
93 cmd->data.setdelmac.mac_length = ETH_ALEN;
94 ether_addr_copy(cmd->data.setdelmac.mac, mac);
95 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelmac_cb, NULL);
98 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
102 QETH_CARD_TEXT(card, 2, "L2Setmac");
103 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
105 dev_info(&card->gdev->dev,
106 "MAC address %pM successfully registered\n", mac);
110 dev_warn(&card->gdev->dev,
111 "MAC address %pM already exists\n", mac);
114 dev_warn(&card->gdev->dev,
115 "MAC address %pM is not authorized\n", mac);
122 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
124 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
125 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
128 QETH_CARD_TEXT(card, 2, "L2Wmac");
129 rc = qeth_l2_send_setdelmac(card, mac, cmd);
130 if (rc == -EADDRINUSE)
131 QETH_DBF_MESSAGE(2, "MAC already registered on device %x\n",
134 QETH_DBF_MESSAGE(2, "Failed to register MAC on device %x: %d\n",
135 CARD_DEVID(card), rc);
139 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
141 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
142 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
145 QETH_CARD_TEXT(card, 2, "L2Rmac");
146 rc = qeth_l2_send_setdelmac(card, mac, cmd);
148 QETH_DBF_MESSAGE(2, "Failed to delete MAC on device %u: %d\n",
149 CARD_DEVID(card), rc);
153 static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card)
155 struct qeth_mac *mac;
156 struct hlist_node *tmp;
159 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
160 hash_del(&mac->hnode);
165 static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue,
166 struct qeth_hdr *hdr, struct sk_buff *skb,
167 int ipv, unsigned int data_len)
169 int cast_type = qeth_get_ether_cast_type(skb);
170 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
172 hdr->hdr.l2.pkt_length = data_len;
174 if (skb_is_gso(skb)) {
175 hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO;
177 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
178 if (skb->ip_summed == CHECKSUM_PARTIAL)
179 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv);
182 /* set byte byte 3 to casting flags */
183 if (cast_type == RTN_MULTICAST)
184 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
185 else if (cast_type == RTN_BROADCAST)
186 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
188 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
190 /* VSWITCH relies on the VLAN
191 * information to be present in
193 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
194 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
195 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
199 static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode)
202 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
207 case IPA_RC_L2_INVALID_VLAN_ID:
209 case IPA_RC_L2_DUP_VLAN_ID:
211 case IPA_RC_L2_VLAN_ID_NOT_FOUND:
213 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
220 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
221 struct qeth_reply *reply,
224 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
226 QETH_CARD_TEXT(card, 2, "L2sdvcb");
227 if (cmd->hdr.return_code) {
228 QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n",
229 cmd->data.setdelvlan.vlan_id,
230 CARD_DEVID(card), cmd->hdr.return_code);
231 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
233 return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code);
236 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
237 enum qeth_ipa_cmds ipacmd)
239 struct qeth_ipa_cmd *cmd;
240 struct qeth_cmd_buffer *iob;
242 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
243 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4,
244 IPA_DATA_SIZEOF(setdelvlan));
247 cmd = __ipa_cmd(iob);
248 cmd->data.setdelvlan.vlan_id = i;
249 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelvlan_cb, NULL);
252 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
253 __be16 proto, u16 vid)
255 struct qeth_card *card = dev->ml_priv;
257 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
261 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
264 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
265 __be16 proto, u16 vid)
267 struct qeth_card *card = dev->ml_priv;
269 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
273 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
276 static void qeth_l2_stop_card(struct qeth_card *card)
278 QETH_CARD_TEXT(card, 2, "stopcard");
280 qeth_set_allowed_threads(card, 0, 1);
282 cancel_work_sync(&card->rx_mode_work);
283 qeth_l2_drain_rx_mode_cache(card);
285 if (card->state == CARD_STATE_SOFTSETUP) {
286 qeth_clear_ipacmd_list(card);
287 qeth_drain_output_queues(card);
288 cancel_delayed_work_sync(&card->buffer_reclaim_work);
289 card->state = CARD_STATE_DOWN;
292 qeth_qdio_clear_card(card, 0);
293 qeth_clear_working_pool_list(card);
294 flush_workqueue(card->event_wq);
295 qeth_flush_local_addrs(card);
296 card->info.promisc_mode = 0;
299 static int qeth_l2_request_initial_mac(struct qeth_card *card)
303 QETH_CARD_TEXT(card, 2, "l2reqmac");
306 rc = qeth_vm_request_mac(card);
309 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n",
310 CARD_DEVID(card), rc);
311 QETH_CARD_TEXT_(card, 2, "err%04x", rc);
312 /* fall back to alternative mechanism: */
316 rc = qeth_setadpparms_change_macaddr(card);
319 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n",
320 CARD_DEVID(card), rc);
321 QETH_CARD_TEXT_(card, 2, "1err%04x", rc);
322 /* fall back once more: */
325 /* some devices don't support a custom MAC address: */
326 if (IS_OSM(card) || IS_OSX(card))
327 return (rc) ? rc : -EADDRNOTAVAIL;
328 eth_hw_addr_random(card->dev);
331 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len);
335 static void qeth_l2_register_dev_addr(struct qeth_card *card)
337 if (!is_valid_ether_addr(card->dev->dev_addr))
338 qeth_l2_request_initial_mac(card);
340 if (!IS_OSN(card) && !qeth_l2_send_setmac(card, card->dev->dev_addr))
341 card->info.dev_addr_is_registered = 1;
343 card->info.dev_addr_is_registered = 0;
346 static int qeth_l2_validate_addr(struct net_device *dev)
348 struct qeth_card *card = dev->ml_priv;
350 if (card->info.dev_addr_is_registered)
351 return eth_validate_addr(dev);
353 QETH_CARD_TEXT(card, 4, "nomacadr");
357 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
359 struct sockaddr *addr = p;
360 struct qeth_card *card = dev->ml_priv;
361 u8 old_addr[ETH_ALEN];
364 QETH_CARD_TEXT(card, 3, "setmac");
366 if (IS_OSM(card) || IS_OSX(card)) {
367 QETH_CARD_TEXT(card, 3, "setmcTYP");
370 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN);
371 if (!is_valid_ether_addr(addr->sa_data))
372 return -EADDRNOTAVAIL;
374 /* don't register the same address twice */
375 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) &&
376 card->info.dev_addr_is_registered)
379 /* add the new address, switch over, drop the old */
380 rc = qeth_l2_send_setmac(card, addr->sa_data);
383 ether_addr_copy(old_addr, dev->dev_addr);
384 ether_addr_copy(dev->dev_addr, addr->sa_data);
386 if (card->info.dev_addr_is_registered)
387 qeth_l2_remove_mac(card, old_addr);
388 card->info.dev_addr_is_registered = 1;
392 static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable)
397 QETH_CARD_TEXT(card, 3, "pmisc2br");
400 if (card->options.sbp.reflect_promisc_primary)
401 role = QETH_SBP_ROLE_PRIMARY;
403 role = QETH_SBP_ROLE_SECONDARY;
405 role = QETH_SBP_ROLE_NONE;
407 rc = qeth_bridgeport_setrole(card, role);
408 QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc);
410 card->options.sbp.role = role;
411 card->info.promisc_mode = enable;
415 static void qeth_l2_set_promisc_mode(struct qeth_card *card)
417 bool enable = card->dev->flags & IFF_PROMISC;
419 if (card->info.promisc_mode == enable)
422 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) {
423 qeth_setadp_promisc_mode(card, enable);
425 mutex_lock(&card->sbp_lock);
426 if (card->options.sbp.reflect_promisc)
427 qeth_l2_promisc_to_bridge(card, enable);
428 mutex_unlock(&card->sbp_lock);
432 /* New MAC address is added to the hash table and marked to be written on card
433 * only if there is not in the hash table storage already
436 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha)
438 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
439 struct qeth_mac *mac;
441 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) {
442 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) {
443 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
448 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
452 ether_addr_copy(mac->mac_addr, ha->addr);
453 mac->disp_flag = QETH_DISP_ADDR_ADD;
455 hash_add(card->mac_htable, &mac->hnode, mac_hash);
458 static void qeth_l2_rx_mode_work(struct work_struct *work)
460 struct qeth_card *card = container_of(work, struct qeth_card,
462 struct net_device *dev = card->dev;
463 struct netdev_hw_addr *ha;
464 struct qeth_mac *mac;
465 struct hlist_node *tmp;
469 QETH_CARD_TEXT(card, 3, "setmulti");
471 netif_addr_lock_bh(dev);
472 netdev_for_each_mc_addr(ha, dev)
473 qeth_l2_add_mac(card, ha);
474 netdev_for_each_uc_addr(ha, dev)
475 qeth_l2_add_mac(card, ha);
476 netif_addr_unlock_bh(dev);
478 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
479 switch (mac->disp_flag) {
480 case QETH_DISP_ADDR_DELETE:
481 qeth_l2_remove_mac(card, mac->mac_addr);
482 hash_del(&mac->hnode);
485 case QETH_DISP_ADDR_ADD:
486 rc = qeth_l2_write_mac(card, mac->mac_addr);
488 hash_del(&mac->hnode);
494 /* for next call to set_rx_mode(): */
495 mac->disp_flag = QETH_DISP_ADDR_DELETE;
499 qeth_l2_set_promisc_mode(card);
502 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
503 struct qeth_qdio_out_q *queue)
505 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
506 struct qeth_hdr *hdr = (struct qeth_hdr *)skb->data;
507 addr_t end = (addr_t)(skb->data + sizeof(*hdr));
508 addr_t start = (addr_t)skb->data;
509 unsigned int elements = 0;
510 unsigned int hd_len = 0;
513 if (skb->protocol == htons(ETH_P_IPV6))
514 return -EPROTONOSUPPORT;
516 if (qeth_get_elements_for_range(start, end) > 1) {
517 /* Misaligned HW header, move it to its own buffer element. */
518 hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
521 hd_len = sizeof(*hdr);
522 skb_copy_from_linear_data(skb, (char *)hdr, hd_len);
526 elements += qeth_count_elements(skb, hd_len);
527 if (elements > queue->max_elements) {
532 rc = qeth_do_send_packet(card, queue, skb, hdr, hd_len, hd_len,
536 kmem_cache_free(qeth_core_header_cache, hdr);
540 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
541 struct net_device *dev)
543 struct qeth_card *card = dev->ml_priv;
544 u16 txq = skb_get_queue_mapping(skb);
545 struct qeth_qdio_out_q *queue;
548 if (!skb_is_gso(skb))
549 qdisc_skb_cb(skb)->pkt_len = skb->len;
551 txq = qeth_iqd_translate_txq(dev, txq);
552 queue = card->qdio.out_qs[txq];
555 rc = qeth_l2_xmit_osn(card, skb, queue);
557 rc = qeth_xmit(card, skb, queue, qeth_get_ip_version(skb),
558 qeth_l2_fill_header);
563 QETH_TXQ_STAT_INC(queue, tx_dropped);
568 static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb,
569 struct net_device *sb_dev)
571 struct qeth_card *card = dev->ml_priv;
574 return qeth_iqd_select_queue(dev, skb,
575 qeth_get_ether_cast_type(skb),
578 return IS_VM_NIC(card) ? netdev_pick_tx(dev, skb, sb_dev) :
579 qeth_get_priority_queue(card, skb);
582 static const struct device_type qeth_l2_devtype = {
583 .name = "qeth_layer2",
584 .groups = qeth_l2_attr_groups,
587 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
589 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
593 dev_notice(&gdev->dev, "OSN support will be dropped in 2021\n");
595 qeth_l2_vnicc_set_defaults(card);
596 mutex_init(&card->sbp_lock);
598 if (gdev->dev.type == &qeth_generic_devtype) {
599 rc = qeth_l2_create_device_attributes(&gdev->dev);
604 hash_init(card->mac_htable);
605 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work);
609 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
611 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
613 if (cgdev->dev.type == &qeth_generic_devtype)
614 qeth_l2_remove_device_attributes(&cgdev->dev);
615 qeth_set_allowed_threads(card, 0, 1);
616 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
618 if (cgdev->state == CCWGROUP_ONLINE)
619 qeth_set_offline(card, false);
621 cancel_work_sync(&card->close_dev_work);
622 if (card->dev->reg_state == NETREG_REGISTERED)
623 unregister_netdev(card->dev);
626 static void qeth_l2_set_rx_mode(struct net_device *dev)
628 struct qeth_card *card = dev->ml_priv;
630 schedule_work(&card->rx_mode_work);
634 * qeth_l2_pnso() - perform network subchannel operation
635 * @card: qeth_card structure pointer
636 * @cnc: Boolean Change-Notification Control
637 * @cb: Callback function will be executed for each element
638 * of the address list
639 * @priv: Pointer to pass to the callback function.
641 * Collects network information in a network address list and calls the
642 * callback function for every entry in the list. If "change-notification-
643 * control" is set, further changes in the address list will be reported
644 * via the IPA command.
646 static int qeth_l2_pnso(struct qeth_card *card, int cnc,
647 void (*cb)(void *priv, struct chsc_pnso_naid_l2 *entry),
650 struct ccw_device *ddev = CARD_DDEV(card);
651 struct chsc_pnso_area *rr;
652 u32 prev_instance = 0;
653 int isfirstblock = 1;
657 QETH_CARD_TEXT(card, 2, "PNSO");
658 rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL);
662 /* on the first iteration, naihdr.resume_token will be zero */
663 rc = ccw_device_pnso(ddev, rr, rr->naihdr.resume_token, cnc);
669 size = rr->naihdr.naids;
670 if (size != sizeof(struct chsc_pnso_naid_l2)) {
675 elems = (rr->response.length - sizeof(struct chsc_header) -
676 sizeof(struct chsc_pnso_naihdr)) / size;
678 if (!isfirstblock && (rr->naihdr.instance != prev_instance)) {
679 /* Inform the caller that they need to scrap */
680 /* the data that was already reported via cb */
685 prev_instance = rr->naihdr.instance;
686 for (i = 0; i < elems; i++)
687 (*cb)(priv, &rr->entries[i]);
688 } while ((rc == -EBUSY) || (!rc && /* list stored */
689 /* resume token is non-zero => list incomplete */
690 (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2)));
693 QETH_CARD_TEXT_(card, 2, "PNrp%04x", rr->response.code);
695 free_page((unsigned long)rr);
699 static const struct net_device_ops qeth_l2_netdev_ops = {
700 .ndo_open = qeth_open,
701 .ndo_stop = qeth_stop,
702 .ndo_get_stats64 = qeth_get_stats64,
703 .ndo_start_xmit = qeth_l2_hard_start_xmit,
704 .ndo_features_check = qeth_features_check,
705 .ndo_select_queue = qeth_l2_select_queue,
706 .ndo_validate_addr = qeth_l2_validate_addr,
707 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
708 .ndo_do_ioctl = qeth_do_ioctl,
709 .ndo_set_mac_address = qeth_l2_set_mac_address,
710 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
711 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
712 .ndo_tx_timeout = qeth_tx_timeout,
713 .ndo_fix_features = qeth_fix_features,
714 .ndo_set_features = qeth_set_features
717 static const struct net_device_ops qeth_osn_netdev_ops = {
718 .ndo_open = qeth_open,
719 .ndo_stop = qeth_stop,
720 .ndo_get_stats64 = qeth_get_stats64,
721 .ndo_start_xmit = qeth_l2_hard_start_xmit,
722 .ndo_validate_addr = eth_validate_addr,
723 .ndo_tx_timeout = qeth_tx_timeout,
726 static int qeth_l2_setup_netdev(struct qeth_card *card)
731 card->dev->netdev_ops = &qeth_osn_netdev_ops;
732 card->dev->flags |= IFF_NOARP;
736 rc = qeth_setup_netdev(card);
740 card->dev->needed_headroom = sizeof(struct qeth_hdr);
741 card->dev->netdev_ops = &qeth_l2_netdev_ops;
742 card->dev->priv_flags |= IFF_UNICAST_FLT;
745 card->dev->features |= NETIF_F_VLAN_CHALLENGED;
747 if (!IS_VM_NIC(card))
748 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
749 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
752 if (IS_OSD(card) && !IS_VM_NIC(card)) {
753 card->dev->features |= NETIF_F_SG;
754 /* OSA 3S and earlier has no RX/TX support */
755 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
756 card->dev->hw_features |= NETIF_F_IP_CSUM;
757 card->dev->vlan_features |= NETIF_F_IP_CSUM;
760 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
761 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
762 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
764 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) ||
765 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) {
766 card->dev->hw_features |= NETIF_F_RXCSUM;
767 card->dev->vlan_features |= NETIF_F_RXCSUM;
769 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
770 card->dev->hw_features |= NETIF_F_TSO;
771 card->dev->vlan_features |= NETIF_F_TSO;
773 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
774 card->dev->hw_features |= NETIF_F_TSO6;
775 card->dev->vlan_features |= NETIF_F_TSO6;
778 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) {
779 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso);
780 netif_keep_dst(card->dev);
781 netif_set_gso_max_size(card->dev,
782 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1));
786 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
787 return register_netdev(card->dev);
790 static void qeth_l2_trace_features(struct qeth_card *card)
792 /* Set BridgePort features */
793 QETH_CARD_TEXT(card, 2, "featuSBP");
794 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
795 sizeof(card->options.sbp.supported_funcs));
796 /* VNIC Characteristics features */
797 QETH_CARD_TEXT(card, 2, "feaVNICC");
798 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
799 sizeof(card->options.vnicc.sup_chars));
802 static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card)
804 if (!card->options.sbp.reflect_promisc &&
805 card->options.sbp.role != QETH_SBP_ROLE_NONE) {
806 /* Conditional to avoid spurious error messages */
807 qeth_bridgeport_setrole(card, card->options.sbp.role);
808 /* Let the callback function refresh the stored role value. */
809 qeth_bridgeport_query_ports(card, &card->options.sbp.role,
812 if (card->options.sbp.hostnotification) {
813 if (qeth_bridgeport_an_set(card, 1))
814 card->options.sbp.hostnotification = 0;
816 qeth_bridgeport_an_set(card, 0);
820 static int qeth_l2_set_online(struct qeth_card *card)
822 struct ccwgroup_device *gdev = card->gdev;
823 struct net_device *dev = card->dev;
827 rc = qeth_core_hardsetup_card(card, &carrier_ok);
829 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
834 mutex_lock(&card->sbp_lock);
835 qeth_bridgeport_query_support(card);
836 if (card->options.sbp.supported_funcs) {
837 qeth_l2_setup_bridgeport_attrs(card);
838 dev_info(&card->gdev->dev,
839 "The device represents a Bridge Capable Port\n");
841 mutex_unlock(&card->sbp_lock);
843 qeth_l2_register_dev_addr(card);
845 /* for the rx_bcast characteristic, init VNICC after setmac */
846 qeth_l2_vnicc_init(card);
848 qeth_trace_features(card);
849 qeth_l2_trace_features(card);
851 qeth_print_status_message(card);
854 QETH_CARD_TEXT(card, 2, "softsetp");
856 card->state = CARD_STATE_SOFTSETUP;
858 qeth_set_allowed_threads(card, 0xffffffff, 0);
860 if (dev->reg_state != NETREG_REGISTERED) {
861 rc = qeth_l2_setup_netdev(card);
866 netif_carrier_on(dev);
870 netif_carrier_on(dev);
872 netif_carrier_off(dev);
874 netif_device_attach(dev);
875 qeth_enable_hw_features(dev);
877 if (card->info.open_when_online) {
878 card->info.open_when_online = 0;
883 /* let user_space know that device is online */
884 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
888 qeth_l2_stop_card(card);
889 qeth_stop_channel(&card->data);
890 qeth_stop_channel(&card->write);
891 qeth_stop_channel(&card->read);
892 qdio_free(CARD_DDEV(card));
896 static void qeth_l2_set_offline(struct qeth_card *card)
898 qeth_l2_stop_card(card);
901 static int __init qeth_l2_init(void)
903 pr_info("register layer 2 discipline\n");
907 static void __exit qeth_l2_exit(void)
909 pr_info("unregister layer 2 discipline\n");
912 /* Returns zero if the command is successfully "consumed" */
913 static int qeth_l2_control_event(struct qeth_card *card,
914 struct qeth_ipa_cmd *cmd)
916 switch (cmd->hdr.command) {
917 case IPA_CMD_SETBRIDGEPORT_OSA:
918 case IPA_CMD_SETBRIDGEPORT_IQD:
919 if (cmd->data.sbp.hdr.command_code ==
920 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
921 qeth_bridge_state_change(card, cmd);
925 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
926 qeth_addr_change_event(card, cmd);
933 struct qeth_discipline qeth_l2_discipline = {
934 .devtype = &qeth_l2_devtype,
935 .setup = qeth_l2_probe_device,
936 .remove = qeth_l2_remove_device,
937 .set_online = qeth_l2_set_online,
938 .set_offline = qeth_l2_set_offline,
940 .control_event_handler = qeth_l2_control_event,
942 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
944 #ifdef CONFIG_QETH_OSN
945 static void qeth_osn_assist_cb(struct qeth_card *card,
946 struct qeth_cmd_buffer *iob,
947 unsigned int data_length)
949 qeth_notify_cmd(iob, 0);
953 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
955 struct qeth_cmd_buffer *iob;
956 struct qeth_card *card;
965 QETH_CARD_TEXT(card, 2, "osnsdmc");
966 if (!qeth_card_hw_is_reachable(card))
969 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_len, 1,
974 qeth_prepare_ipa_cmd(card, iob, (u16) data_len, NULL);
976 memcpy(__ipa_cmd(iob), data, data_len);
977 iob->callback = qeth_osn_assist_cb;
978 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
980 EXPORT_SYMBOL(qeth_osn_assist);
982 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
983 int (*assist_cb)(struct net_device *, void *),
984 int (*data_cb)(struct sk_buff *))
986 struct qeth_card *card;
990 memcpy(&devno, read_dev_no, 2);
991 sprintf(bus_id, "0.0.%04x", devno);
992 card = qeth_get_card_by_busid(bus_id);
993 if (!card || !IS_OSN(card))
997 QETH_CARD_TEXT(card, 2, "osnreg");
998 if ((assist_cb == NULL) || (data_cb == NULL))
1000 card->osn_info.assist_cb = assist_cb;
1001 card->osn_info.data_cb = data_cb;
1004 EXPORT_SYMBOL(qeth_osn_register);
1006 void qeth_osn_deregister(struct net_device *dev)
1008 struct qeth_card *card;
1012 card = dev->ml_priv;
1015 QETH_CARD_TEXT(card, 2, "osndereg");
1016 card->osn_info.assist_cb = NULL;
1017 card->osn_info.data_cb = NULL;
1020 EXPORT_SYMBOL(qeth_osn_deregister);
1023 /* SETBRIDGEPORT support, async notifications */
1025 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1028 * qeth_bridge_emit_host_event() - bridgeport address change notification
1029 * @card: qeth_card structure pointer, for udev events.
1030 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1031 * and reset token and addr_lnid are unused and may be NULL.
1032 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1033 * object, 0 - addition of an object.
1034 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1035 * @token: "network token" structure identifying physical address of the port.
1036 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1038 * This function is called when registrations and deregistrations are
1039 * reported by the hardware, and also when notifications are enabled -
1040 * for all currently registered addresses.
1042 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1043 enum qeth_an_event_type evtype,
1045 struct net_if_token *token,
1046 struct mac_addr_lnid *addr_lnid)
1053 case anev_reg_unreg:
1054 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1055 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1056 ? "deregister" : "register");
1057 env[i] = str[i]; i++;
1058 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1059 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1061 env[i] = str[i]; i++;
1063 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1064 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1066 env[i] = str[i]; i++;
1068 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1069 token->cssid, token->ssid, token->devnum);
1070 env[i] = str[i]; i++;
1071 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1072 env[i] = str[i]; i++;
1073 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1075 env[i] = str[i]; i++;
1076 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1077 env[i] = str[i]; i++;
1080 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1081 env[i] = str[i]; i++;
1084 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1085 env[i] = str[i]; i++;
1089 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1092 struct qeth_bridge_state_data {
1093 struct work_struct worker;
1094 struct qeth_card *card;
1095 struct qeth_sbp_state_change qports;
1098 static void qeth_bridge_state_change_worker(struct work_struct *work)
1100 struct qeth_bridge_state_data *data =
1101 container_of(work, struct qeth_bridge_state_data, worker);
1102 /* We are only interested in the first entry - local port */
1103 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1104 char env_locrem[32];
1114 /* Role should not change by itself, but if it did, */
1115 /* information from the hardware is authoritative. */
1116 mutex_lock(&data->card->sbp_lock);
1117 data->card->options.sbp.role = entry->role;
1118 mutex_unlock(&data->card->sbp_lock);
1120 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1121 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1122 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1123 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1124 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1126 snprintf(env_state, sizeof(env_state), "STATE=%s",
1127 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1128 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1129 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1131 kobject_uevent_env(&data->card->gdev->dev.kobj,
1136 static void qeth_bridge_state_change(struct qeth_card *card,
1137 struct qeth_ipa_cmd *cmd)
1139 struct qeth_sbp_state_change *qports =
1140 &cmd->data.sbp.data.state_change;
1141 struct qeth_bridge_state_data *data;
1144 QETH_CARD_TEXT(card, 2, "brstchng");
1145 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1146 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1149 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1150 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1153 QETH_CARD_TEXT(card, 2, "BPSalloc");
1156 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1158 memcpy(&data->qports, qports,
1159 sizeof(struct qeth_sbp_state_change) + extrasize);
1160 queue_work(card->event_wq, &data->worker);
1163 struct qeth_addr_change_data {
1164 struct work_struct worker;
1165 struct qeth_card *card;
1166 struct qeth_ipacmd_addr_change ac_event;
1169 static void qeth_addr_change_event_worker(struct work_struct *work)
1171 struct qeth_addr_change_data *data =
1172 container_of(work, struct qeth_addr_change_data, worker);
1175 QETH_CARD_TEXT(data->card, 4, "adrchgew");
1176 if (data->ac_event.lost_event_mask) {
1177 dev_info(&data->card->gdev->dev,
1178 "Address change notification stopped on %s (%s)\n",
1179 data->card->dev->name,
1180 (data->ac_event.lost_event_mask == 0x01)
1182 : (data->ac_event.lost_event_mask == 0x02)
1183 ? "Bridge port state change"
1184 : "Unknown reason");
1185 mutex_lock(&data->card->sbp_lock);
1186 data->card->options.sbp.hostnotification = 0;
1187 mutex_unlock(&data->card->sbp_lock);
1188 qeth_bridge_emit_host_event(data->card, anev_abort,
1191 for (i = 0; i < data->ac_event.num_entries; i++) {
1192 struct qeth_ipacmd_addr_change_entry *entry =
1193 &data->ac_event.entry[i];
1194 qeth_bridge_emit_host_event(data->card,
1203 static void qeth_addr_change_event(struct qeth_card *card,
1204 struct qeth_ipa_cmd *cmd)
1206 struct qeth_ipacmd_addr_change *hostevs =
1207 &cmd->data.addrchange;
1208 struct qeth_addr_change_data *data;
1211 QETH_CARD_TEXT(card, 4, "adrchgev");
1212 if (cmd->hdr.return_code != 0x0000) {
1213 if (cmd->hdr.return_code == 0x0010) {
1214 if (hostevs->lost_event_mask == 0x00)
1215 hostevs->lost_event_mask = 0xff;
1217 QETH_CARD_TEXT_(card, 2, "ACHN%04x",
1218 cmd->hdr.return_code);
1222 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1223 hostevs->num_entries;
1224 data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize,
1227 QETH_CARD_TEXT(card, 2, "ACNalloc");
1230 INIT_WORK(&data->worker, qeth_addr_change_event_worker);
1232 memcpy(&data->ac_event, hostevs,
1233 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1234 queue_work(card->event_wq, &data->worker);
1237 /* SETBRIDGEPORT support; sending commands */
1239 struct _qeth_sbp_cbctl {
1243 enum qeth_sbp_roles *role;
1244 enum qeth_sbp_states *state;
1249 static int qeth_bridgeport_makerc(struct qeth_card *card,
1250 struct qeth_ipa_cmd *cmd)
1252 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp;
1253 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code;
1254 u16 ipa_rc = cmd->hdr.return_code;
1255 u16 sbp_rc = sbp->hdr.return_code;
1258 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS)
1261 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) ||
1262 (!IS_IQD(card) && ipa_rc == sbp_rc)) {
1264 case IPA_RC_SUCCESS:
1267 case IPA_RC_L2_UNSUPPORTED_CMD:
1268 case IPA_RC_UNSUPPORTED_COMMAND:
1271 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1272 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1273 rc = -ENODEV; /* maybe not the best code here? */
1274 dev_err(&card->gdev->dev,
1275 "The device is not configured as a Bridge Port\n");
1277 case IPA_RC_SBP_OSA_OS_MISMATCH:
1278 case IPA_RC_SBP_IQD_OS_MISMATCH:
1280 dev_err(&card->gdev->dev,
1281 "A Bridge Port is already configured by a different operating system\n");
1283 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1284 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1286 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1288 dev_err(&card->gdev->dev,
1289 "The LAN already has a primary Bridge Port\n");
1291 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1293 dev_err(&card->gdev->dev,
1294 "The device is already a primary Bridge Port\n");
1300 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1301 case IPA_RC_SBP_IQD_CURRENT_SECOND:
1303 dev_err(&card->gdev->dev,
1304 "The device is already a secondary Bridge Port\n");
1306 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1307 case IPA_RC_SBP_IQD_LIMIT_SECOND:
1309 dev_err(&card->gdev->dev,
1310 "The LAN cannot have more secondary Bridge Ports\n");
1312 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1313 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1315 dev_err(&card->gdev->dev,
1316 "The device is already a primary Bridge Port\n");
1318 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1319 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1321 dev_err(&card->gdev->dev,
1322 "The device is not authorized to be a Bridge Port\n");
1329 case IPA_RC_NOTSUPP:
1332 case IPA_RC_UNSUPPORTED_COMMAND:
1341 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc);
1342 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc);
1347 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1348 enum qeth_ipa_sbp_cmd sbp_cmd,
1349 unsigned int data_length)
1351 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD :
1352 IPA_CMD_SETBRIDGEPORT_OSA;
1353 struct qeth_ipacmd_sbp_hdr *hdr;
1354 struct qeth_cmd_buffer *iob;
1356 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE,
1358 offsetof(struct qeth_ipacmd_setbridgeport,
1363 hdr = &__ipa_cmd(iob)->data.sbp.hdr;
1364 hdr->cmdlength = sizeof(*hdr) + data_length;
1365 hdr->command_code = sbp_cmd;
1366 hdr->used_total = 1;
1371 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1372 struct qeth_reply *reply, unsigned long data)
1374 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1375 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1378 QETH_CARD_TEXT(card, 2, "brqsupcb");
1379 rc = qeth_bridgeport_makerc(card, cmd);
1383 cbctl->data.supported =
1384 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1389 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1390 * @card: qeth_card structure pointer.
1392 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1393 * strucutre: card->options.sbp.supported_funcs.
1395 static void qeth_bridgeport_query_support(struct qeth_card *card)
1397 struct qeth_cmd_buffer *iob;
1398 struct _qeth_sbp_cbctl cbctl;
1400 QETH_CARD_TEXT(card, 2, "brqsuppo");
1401 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1402 SBP_DATA_SIZEOF(query_cmds_supp));
1406 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1408 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1409 card->options.sbp.supported_funcs = 0;
1412 card->options.sbp.supported_funcs = cbctl.data.supported;
1415 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1416 struct qeth_reply *reply, unsigned long data)
1418 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1419 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1420 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1423 QETH_CARD_TEXT(card, 2, "brqprtcb");
1424 rc = qeth_bridgeport_makerc(card, cmd);
1428 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1429 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1432 /* first entry contains the state of the local port */
1433 if (qports->num_entries > 0) {
1434 if (cbctl->data.qports.role)
1435 *cbctl->data.qports.role = qports->entry[0].role;
1436 if (cbctl->data.qports.state)
1437 *cbctl->data.qports.state = qports->entry[0].state;
1443 * qeth_bridgeport_query_ports() - query local bridgeport status.
1444 * @card: qeth_card structure pointer.
1445 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1446 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1448 * Returns negative errno-compatible error indication or 0 on success.
1450 * 'role' and 'state' are not updated in case of hardware operation failure.
1452 int qeth_bridgeport_query_ports(struct qeth_card *card,
1453 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1455 struct qeth_cmd_buffer *iob;
1456 struct _qeth_sbp_cbctl cbctl = {
1465 QETH_CARD_TEXT(card, 2, "brqports");
1466 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1468 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1472 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1476 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1477 struct qeth_reply *reply, unsigned long data)
1479 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1481 QETH_CARD_TEXT(card, 2, "brsetrcb");
1482 return qeth_bridgeport_makerc(card, cmd);
1486 * qeth_bridgeport_setrole() - Assign primary role to the port.
1487 * @card: qeth_card structure pointer.
1488 * @role: Role to assign.
1490 * Returns negative errno-compatible error indication or 0 on success.
1492 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1494 struct qeth_cmd_buffer *iob;
1495 enum qeth_ipa_sbp_cmd setcmd;
1496 unsigned int cmdlength = 0;
1498 QETH_CARD_TEXT(card, 2, "brsetrol");
1500 case QETH_SBP_ROLE_NONE:
1501 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1503 case QETH_SBP_ROLE_PRIMARY:
1504 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1505 cmdlength = SBP_DATA_SIZEOF(set_primary);
1507 case QETH_SBP_ROLE_SECONDARY:
1508 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1513 if (!(card->options.sbp.supported_funcs & setcmd))
1515 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1519 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL);
1522 static void qeth_bridgeport_an_set_cb(void *priv,
1523 struct chsc_pnso_naid_l2 *entry)
1525 struct qeth_card *card = (struct qeth_card *)priv;
1528 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1529 if (entry->addr_lnid.lnid < VLAN_N_VID)
1530 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1531 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1532 (struct net_if_token *)&entry->nit,
1533 (struct mac_addr_lnid *)&entry->addr_lnid);
1537 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1538 * @card: qeth_card structure pointer.
1539 * @enable: 0 - disable, non-zero - enable notifications
1541 * Returns negative errno-compatible error indication or 0 on success.
1543 * On enable, emits a series of address notifications udev events for all
1544 * currently registered hosts.
1546 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1550 if (!card->options.sbp.supported_funcs)
1554 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1555 rc = qeth_l2_pnso(card, 1, qeth_bridgeport_an_set_cb, card);
1557 rc = qeth_l2_pnso(card, 0, NULL, NULL);
1561 static bool qeth_bridgeport_is_in_use(struct qeth_card *card)
1563 return (card->options.sbp.role || card->options.sbp.reflect_promisc ||
1564 card->options.sbp.hostnotification);
1567 /* VNIC Characteristics support */
1569 /* handle VNICC IPA command return codes; convert to error codes */
1570 static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc)
1575 case IPA_RC_SUCCESS:
1577 case IPA_RC_L2_UNSUPPORTED_CMD:
1578 case IPA_RC_NOTSUPP:
1581 case IPA_RC_VNICC_OOSEQ:
1584 case IPA_RC_VNICC_VNICBP:
1587 case IPA_RC_L2_ADDR_TABLE_FULL:
1590 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
1597 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
1601 /* generic VNICC request call back */
1602 static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
1603 struct qeth_reply *reply,
1606 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1607 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
1608 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command;
1610 QETH_CARD_TEXT(card, 2, "vniccrcb");
1611 if (cmd->hdr.return_code)
1612 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code);
1613 /* return results to caller */
1614 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported;
1615 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled;
1617 if (sub_cmd == IPA_VNICC_QUERY_CMDS)
1618 *(u32 *)reply->param = rep->data.query_cmds.sup_cmds;
1619 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT)
1620 *(u32 *)reply->param = rep->data.getset_timeout.timeout;
1625 static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card,
1627 unsigned int data_length)
1629 struct qeth_ipacmd_vnicc_hdr *hdr;
1630 struct qeth_cmd_buffer *iob;
1632 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE,
1634 offsetof(struct qeth_ipacmd_vnicc, data));
1638 hdr = &__ipa_cmd(iob)->data.vnicc.hdr;
1639 hdr->data_length = sizeof(*hdr) + data_length;
1640 hdr->sub_command = vnicc_cmd;
1644 /* VNICC query VNIC characteristics request */
1645 static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
1647 struct qeth_cmd_buffer *iob;
1649 QETH_CARD_TEXT(card, 2, "vniccqch");
1650 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0);
1654 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1657 /* VNICC query sub commands request */
1658 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
1661 struct qeth_cmd_buffer *iob;
1663 QETH_CARD_TEXT(card, 2, "vniccqcm");
1664 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS,
1665 VNICC_DATA_SIZEOF(query_cmds));
1669 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char;
1671 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds);
1674 /* VNICC enable/disable characteristic request */
1675 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
1678 struct qeth_cmd_buffer *iob;
1680 QETH_CARD_TEXT(card, 2, "vniccedc");
1681 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char));
1685 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char;
1687 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
1690 /* VNICC get/set timeout for characteristic request */
1691 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
1692 u32 cmd, u32 *timeout)
1694 struct qeth_vnicc_getset_timeout *getset_timeout;
1695 struct qeth_cmd_buffer *iob;
1697 QETH_CARD_TEXT(card, 2, "vniccgst");
1698 iob = qeth_l2_vnicc_build_cmd(card, cmd,
1699 VNICC_DATA_SIZEOF(getset_timeout));
1703 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout;
1704 getset_timeout->vnic_char = vnicc;
1706 if (cmd == IPA_VNICC_SET_TIMEOUT)
1707 getset_timeout->timeout = *timeout;
1709 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, timeout);
1712 /* set current VNICC flag state; called from sysfs store function */
1713 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
1718 QETH_CARD_TEXT(card, 2, "vniccsch");
1720 /* check if characteristic and enable/disable are supported */
1721 if (!(card->options.vnicc.sup_chars & vnicc) ||
1722 !(card->options.vnicc.set_char_sup & vnicc))
1725 if (qeth_bridgeport_is_in_use(card))
1728 /* set enable/disable command and store wanted characteristic */
1730 cmd = IPA_VNICC_ENABLE;
1731 card->options.vnicc.wanted_chars |= vnicc;
1733 cmd = IPA_VNICC_DISABLE;
1734 card->options.vnicc.wanted_chars &= ~vnicc;
1737 /* do we need to do anything? */
1738 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
1741 /* if card is not ready, simply stop here */
1742 if (!qeth_card_hw_is_reachable(card)) {
1744 card->options.vnicc.cur_chars |= vnicc;
1746 card->options.vnicc.cur_chars &= ~vnicc;
1750 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
1752 card->options.vnicc.wanted_chars =
1753 card->options.vnicc.cur_chars;
1755 /* successful online VNICC change; handle special cases */
1756 if (state && vnicc == QETH_VNICC_RX_BCAST)
1757 card->options.vnicc.rx_bcast_enabled = true;
1758 if (!state && vnicc == QETH_VNICC_LEARNING)
1759 qeth_l2_vnicc_recover_timeout(card, vnicc,
1760 &card->options.vnicc.learning_timeout);
1766 /* get current VNICC flag state; called from sysfs show function */
1767 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
1771 QETH_CARD_TEXT(card, 2, "vniccgch");
1773 /* check if characteristic is supported */
1774 if (!(card->options.vnicc.sup_chars & vnicc))
1777 if (qeth_bridgeport_is_in_use(card))
1780 /* if card is ready, query current VNICC state */
1781 if (qeth_card_hw_is_reachable(card))
1782 rc = qeth_l2_vnicc_query_chars(card);
1784 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
1788 /* set VNICC timeout; called from sysfs store function. Currently, only learning
1791 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
1795 QETH_CARD_TEXT(card, 2, "vniccsto");
1797 /* check if characteristic and set_timeout are supported */
1798 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
1799 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
1802 if (qeth_bridgeport_is_in_use(card))
1805 /* do we need to do anything? */
1806 if (card->options.vnicc.learning_timeout == timeout)
1809 /* if card is not ready, simply store the value internally and return */
1810 if (!qeth_card_hw_is_reachable(card)) {
1811 card->options.vnicc.learning_timeout = timeout;
1815 /* send timeout value to card; if successful, store value internally */
1816 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
1817 IPA_VNICC_SET_TIMEOUT, &timeout);
1819 card->options.vnicc.learning_timeout = timeout;
1824 /* get current VNICC timeout; called from sysfs show function. Currently, only
1825 * learning supports timeout
1827 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
1831 QETH_CARD_TEXT(card, 2, "vniccgto");
1833 /* check if characteristic and get_timeout are supported */
1834 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
1835 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
1838 if (qeth_bridgeport_is_in_use(card))
1841 /* if card is ready, get timeout. Otherwise, just return stored value */
1842 *timeout = card->options.vnicc.learning_timeout;
1843 if (qeth_card_hw_is_reachable(card))
1844 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
1845 IPA_VNICC_GET_TIMEOUT,
1851 /* check if VNICC is currently enabled */
1852 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card)
1854 if (!card->options.vnicc.sup_chars)
1856 /* default values are only OK if rx_bcast was not enabled by user
1857 * or the card is offline.
1859 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
1860 if (!card->options.vnicc.rx_bcast_enabled ||
1861 !qeth_card_hw_is_reachable(card))
1867 /* recover user timeout setting */
1868 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
1871 if (card->options.vnicc.sup_chars & vnicc &&
1872 card->options.vnicc.getset_timeout_sup & vnicc &&
1873 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
1876 *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
1880 /* recover user characteristic setting */
1881 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
1884 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
1886 if (card->options.vnicc.sup_chars & vnicc &&
1887 card->options.vnicc.set_char_sup & vnicc &&
1888 !qeth_l2_vnicc_set_char(card, vnicc, cmd))
1890 card->options.vnicc.wanted_chars &= ~vnicc;
1891 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
1895 /* (re-)initialize VNICC */
1896 static void qeth_l2_vnicc_init(struct qeth_card *card)
1898 u32 *timeout = &card->options.vnicc.learning_timeout;
1899 bool enable, error = false;
1900 unsigned int chars_len, i;
1901 unsigned long chars_tmp;
1902 u32 sup_cmds, vnicc;
1904 QETH_CARD_TEXT(card, 2, "vniccini");
1905 /* reset rx_bcast */
1906 card->options.vnicc.rx_bcast_enabled = 0;
1907 /* initial query and storage of VNIC characteristics */
1908 if (qeth_l2_vnicc_query_chars(card)) {
1909 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
1910 *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
1911 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
1912 /* fail quietly if user didn't change the default config */
1913 card->options.vnicc.sup_chars = 0;
1914 card->options.vnicc.cur_chars = 0;
1915 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
1918 /* get supported commands for each supported characteristic */
1919 chars_tmp = card->options.vnicc.sup_chars;
1920 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
1921 for_each_set_bit(i, &chars_tmp, chars_len) {
1923 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) {
1927 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) &&
1928 (sup_cmds & IPA_VNICC_GET_TIMEOUT))
1929 card->options.vnicc.getset_timeout_sup |= vnicc;
1931 card->options.vnicc.getset_timeout_sup &= ~vnicc;
1932 if ((sup_cmds & IPA_VNICC_ENABLE) &&
1933 (sup_cmds & IPA_VNICC_DISABLE))
1934 card->options.vnicc.set_char_sup |= vnicc;
1936 card->options.vnicc.set_char_sup &= ~vnicc;
1938 /* enforce assumed default values and recover settings, if changed */
1939 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
1941 /* Change chars, if necessary */
1942 chars_tmp = card->options.vnicc.wanted_chars ^
1943 card->options.vnicc.cur_chars;
1944 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
1945 for_each_set_bit(i, &chars_tmp, chars_len) {
1947 enable = card->options.vnicc.wanted_chars & vnicc;
1948 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
1951 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
1954 /* configure default values of VNIC characteristics */
1955 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
1957 /* characteristics values */
1958 card->options.vnicc.sup_chars = QETH_VNICC_ALL;
1959 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
1960 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
1961 /* supported commands */
1962 card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
1963 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
1964 /* settings wanted by users */
1965 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
1968 module_init(qeth_l2_init);
1969 module_exit(qeth_l2_exit);
1971 MODULE_DESCRIPTION("qeth layer 2 discipline");
1972 MODULE_LICENSE("GPL");