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/list.h>
21 #include <linux/hash.h>
22 #include <linux/hashtable.h>
23 #include <asm/setup.h>
24 #include "qeth_core.h"
27 static int qeth_l2_set_offline(struct ccwgroup_device *);
28 static int qeth_l2_stop(struct net_device *);
29 static void qeth_bridgeport_query_support(struct qeth_card *card);
30 static void qeth_bridge_state_change(struct qeth_card *card,
31 struct qeth_ipa_cmd *cmd);
32 static void qeth_bridge_host_event(struct qeth_card *card,
33 struct qeth_ipa_cmd *cmd);
34 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card);
35 static void qeth_l2_vnicc_init(struct qeth_card *card);
36 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
39 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
41 struct qeth_card *card;
42 struct net_device *ndev;
45 struct ccw_dev_id read_devid;
48 memcpy(&temp_dev_no, read_dev_no, 2);
49 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
50 list_for_each_entry(card, &qeth_core_card_list.list, list) {
51 ccw_device_get_id(CARD_RDEV(card), &read_devid);
52 if (read_devid.devno == temp_dev_no) {
57 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
61 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode)
66 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
71 case IPA_RC_L2_UNSUPPORTED_CMD:
74 case IPA_RC_L2_ADDR_TABLE_FULL:
77 case IPA_RC_L2_DUP_MAC:
78 case IPA_RC_L2_DUP_LAYER3_MAC:
81 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
82 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
85 case IPA_RC_L2_MAC_NOT_FOUND:
98 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
99 enum qeth_ipa_cmds ipacmd)
101 struct qeth_ipa_cmd *cmd;
102 struct qeth_cmd_buffer *iob;
104 QETH_CARD_TEXT(card, 2, "L2sdmac");
105 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
108 cmd = __ipa_cmd(iob);
109 cmd->data.setdelmac.mac_length = ETH_ALEN;
110 ether_addr_copy(cmd->data.setdelmac.mac, mac);
111 return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob,
115 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
119 QETH_CARD_TEXT(card, 2, "L2Setmac");
120 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
122 dev_info(&card->gdev->dev,
123 "MAC address %pM successfully registered on device %s\n",
124 mac, card->dev->name);
128 dev_warn(&card->gdev->dev,
129 "MAC address %pM already exists\n", mac);
132 dev_warn(&card->gdev->dev,
133 "MAC address %pM is not authorized\n", mac);
140 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
142 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
143 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
146 QETH_CARD_TEXT(card, 2, "L2Wmac");
147 rc = qeth_l2_send_setdelmac(card, mac, cmd);
149 QETH_DBF_MESSAGE(2, "MAC %pM already registered on %s\n",
150 mac, QETH_CARD_IFNAME(card));
152 QETH_DBF_MESSAGE(2, "Failed to register MAC %pM on %s: %d\n",
153 mac, QETH_CARD_IFNAME(card), rc);
157 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
159 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
160 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
163 QETH_CARD_TEXT(card, 2, "L2Rmac");
164 rc = qeth_l2_send_setdelmac(card, mac, cmd);
166 QETH_DBF_MESSAGE(2, "Failed to delete MAC %pM on %s: %d\n",
167 mac, QETH_CARD_IFNAME(card), rc);
171 static void qeth_l2_del_all_macs(struct qeth_card *card)
173 struct qeth_mac *mac;
174 struct hlist_node *tmp;
177 spin_lock_bh(&card->mclock);
178 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
179 hash_del(&mac->hnode);
182 spin_unlock_bh(&card->mclock);
185 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
187 if (card->info.type == QETH_CARD_TYPE_OSN)
189 if (is_broadcast_ether_addr(skb->data))
190 return RTN_BROADCAST;
191 if (is_multicast_ether_addr(skb->data))
192 return RTN_MULTICAST;
196 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb,
197 int cast_type, unsigned int data_len)
199 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
201 memset(hdr, 0, sizeof(struct qeth_hdr));
202 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
203 hdr->hdr.l2.pkt_length = data_len;
205 /* set byte byte 3 to casting flags */
206 if (cast_type == RTN_MULTICAST)
207 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
208 else if (cast_type == RTN_BROADCAST)
209 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
211 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
213 /* VSWITCH relies on the VLAN
214 * information to be present in
216 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
217 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
218 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
222 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode)
225 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
230 case IPA_RC_L2_INVALID_VLAN_ID:
232 case IPA_RC_L2_DUP_VLAN_ID:
234 case IPA_RC_L2_VLAN_ID_NOT_FOUND:
236 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
245 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
246 struct qeth_reply *reply,
249 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
251 QETH_CARD_TEXT(card, 2, "L2sdvcb");
252 if (cmd->hdr.return_code) {
253 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n",
254 cmd->data.setdelvlan.vlan_id,
255 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
256 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
257 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
262 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
263 enum qeth_ipa_cmds ipacmd)
265 struct qeth_ipa_cmd *cmd;
266 struct qeth_cmd_buffer *iob;
268 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
269 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
272 cmd = __ipa_cmd(iob);
273 cmd->data.setdelvlan.vlan_id = i;
274 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob,
275 qeth_l2_send_setdelvlan_cb, NULL));
278 static void qeth_l2_process_vlans(struct qeth_card *card)
280 struct qeth_vlan_vid *id;
282 QETH_CARD_TEXT(card, 3, "L2prcvln");
283 mutex_lock(&card->vid_list_mutex);
284 list_for_each_entry(id, &card->vid_list, list) {
285 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
287 mutex_unlock(&card->vid_list_mutex);
290 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
291 __be16 proto, u16 vid)
293 struct qeth_card *card = dev->ml_priv;
294 struct qeth_vlan_vid *id;
297 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
300 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
301 QETH_CARD_TEXT(card, 3, "aidREC");
304 id = kmalloc(sizeof(*id), GFP_KERNEL);
307 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
312 mutex_lock(&card->vid_list_mutex);
313 list_add_tail(&id->list, &card->vid_list);
314 mutex_unlock(&card->vid_list_mutex);
321 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
322 __be16 proto, u16 vid)
324 struct qeth_vlan_vid *id, *tmpid = NULL;
325 struct qeth_card *card = dev->ml_priv;
328 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
329 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
330 QETH_CARD_TEXT(card, 3, "kidREC");
333 mutex_lock(&card->vid_list_mutex);
334 list_for_each_entry(id, &card->vid_list, list) {
335 if (id->vid == vid) {
341 mutex_unlock(&card->vid_list_mutex);
343 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
349 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
351 QETH_DBF_TEXT(SETUP , 2, "stopcard");
352 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
354 qeth_set_allowed_threads(card, 0, 1);
355 if (card->read.state == CH_STATE_UP &&
356 card->write.state == CH_STATE_UP &&
357 (card->state == CARD_STATE_UP)) {
359 card->info.type != QETH_CARD_TYPE_OSN) {
360 qeth_l2_stop(card->dev);
363 dev_close(card->dev);
366 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
367 card->state = CARD_STATE_SOFTSETUP;
369 if (card->state == CARD_STATE_SOFTSETUP) {
370 qeth_l2_del_all_macs(card);
371 qeth_clear_ipacmd_list(card);
372 card->state = CARD_STATE_HARDSETUP;
374 if (card->state == CARD_STATE_HARDSETUP) {
375 qeth_qdio_clear_card(card, 0);
376 qeth_clear_qdio_buffers(card);
377 qeth_clear_working_pool_list(card);
378 card->state = CARD_STATE_DOWN;
380 if (card->state == CARD_STATE_DOWN) {
381 qeth_clear_cmd_buffers(&card->read);
382 qeth_clear_cmd_buffers(&card->write);
386 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
387 int budget, int *done)
391 struct qeth_hdr *hdr;
395 WARN_ON_ONCE(!budget);
397 skb = qeth_core_get_next_skb(card,
398 &card->qdio.in_q->bufs[card->rx.b_index],
399 &card->rx.b_element, &card->rx.e_offset, &hdr);
404 switch (hdr->hdr.l2.id) {
405 case QETH_HEADER_TYPE_LAYER2:
406 skb->protocol = eth_type_trans(skb, skb->dev);
407 qeth_rx_csum(card, skb, hdr->hdr.l2.flags[1]);
408 if (skb->protocol == htons(ETH_P_802_2))
409 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
411 napi_gro_receive(&card->napi, skb);
413 case QETH_HEADER_TYPE_OSN:
414 if (card->info.type == QETH_CARD_TYPE_OSN) {
415 skb_push(skb, sizeof(struct qeth_hdr));
416 skb_copy_to_linear_data(skb, hdr,
417 sizeof(struct qeth_hdr));
419 card->osn_info.data_cb(skb);
424 dev_kfree_skb_any(skb);
425 QETH_CARD_TEXT(card, 3, "inbunkno");
426 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
431 card->stats.rx_packets++;
432 card->stats.rx_bytes += len;
437 static int qeth_l2_request_initial_mac(struct qeth_card *card)
441 QETH_DBF_TEXT(SETUP, 2, "l2reqmac");
442 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
445 rc = qeth_vm_request_mac(card);
448 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n",
449 CARD_BUS_ID(card), rc);
450 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc);
451 /* fall back to alternative mechanism: */
454 if (card->info.type == QETH_CARD_TYPE_IQD ||
455 card->info.type == QETH_CARD_TYPE_OSM ||
456 card->info.type == QETH_CARD_TYPE_OSX ||
457 card->info.guestlan) {
458 rc = qeth_setadpparms_change_macaddr(card);
461 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %s: x%x\n",
462 CARD_BUS_ID(card), rc);
463 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
464 /* fall back once more: */
467 /* some devices don't support a custom MAC address: */
468 if (card->info.type == QETH_CARD_TYPE_OSM ||
469 card->info.type == QETH_CARD_TYPE_OSX)
470 return (rc) ? rc : -EADDRNOTAVAIL;
471 eth_hw_addr_random(card->dev);
474 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len);
478 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
480 struct sockaddr *addr = p;
481 struct qeth_card *card = dev->ml_priv;
482 u8 old_addr[ETH_ALEN];
485 QETH_CARD_TEXT(card, 3, "setmac");
487 if (card->info.type == QETH_CARD_TYPE_OSN ||
488 card->info.type == QETH_CARD_TYPE_OSM ||
489 card->info.type == QETH_CARD_TYPE_OSX) {
490 QETH_CARD_TEXT(card, 3, "setmcTYP");
493 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN);
494 if (!is_valid_ether_addr(addr->sa_data))
495 return -EADDRNOTAVAIL;
497 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
498 QETH_CARD_TEXT(card, 3, "setmcREC");
502 /* avoid racing against concurrent state change: */
503 if (!mutex_trylock(&card->conf_mutex))
506 if (!qeth_card_hw_is_reachable(card)) {
507 ether_addr_copy(dev->dev_addr, addr->sa_data);
511 /* don't register the same address twice */
512 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) &&
513 (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
516 /* add the new address, switch over, drop the old */
517 rc = qeth_l2_send_setmac(card, addr->sa_data);
520 ether_addr_copy(old_addr, dev->dev_addr);
521 ether_addr_copy(dev->dev_addr, addr->sa_data);
523 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)
524 qeth_l2_remove_mac(card, old_addr);
525 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
528 mutex_unlock(&card->conf_mutex);
532 static void qeth_promisc_to_bridge(struct qeth_card *card)
534 struct net_device *dev = card->dev;
535 enum qeth_ipa_promisc_modes promisc_mode;
539 QETH_CARD_TEXT(card, 3, "pmisc2br");
541 if (!card->options.sbp.reflect_promisc)
543 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
544 : SET_PROMISC_MODE_OFF;
545 if (promisc_mode == card->info.promisc_mode)
548 if (promisc_mode == SET_PROMISC_MODE_ON) {
549 if (card->options.sbp.reflect_promisc_primary)
550 role = QETH_SBP_ROLE_PRIMARY;
552 role = QETH_SBP_ROLE_SECONDARY;
554 role = QETH_SBP_ROLE_NONE;
556 rc = qeth_bridgeport_setrole(card, role);
557 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
558 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
560 card->options.sbp.role = role;
561 card->info.promisc_mode = promisc_mode;
565 /* New MAC address is added to the hash table and marked to be written on card
566 * only if there is not in the hash table storage already
569 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha)
571 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
572 struct qeth_mac *mac;
574 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) {
575 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) {
576 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
581 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
585 ether_addr_copy(mac->mac_addr, ha->addr);
586 mac->disp_flag = QETH_DISP_ADDR_ADD;
588 hash_add(card->mac_htable, &mac->hnode, mac_hash);
591 static void qeth_l2_set_rx_mode(struct net_device *dev)
593 struct qeth_card *card = dev->ml_priv;
594 struct netdev_hw_addr *ha;
595 struct qeth_mac *mac;
596 struct hlist_node *tmp;
600 if (card->info.type == QETH_CARD_TYPE_OSN)
603 QETH_CARD_TEXT(card, 3, "setmulti");
604 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
605 (card->state != CARD_STATE_UP))
608 spin_lock_bh(&card->mclock);
610 netdev_for_each_mc_addr(ha, dev)
611 qeth_l2_add_mac(card, ha);
612 netdev_for_each_uc_addr(ha, dev)
613 qeth_l2_add_mac(card, ha);
615 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
616 switch (mac->disp_flag) {
617 case QETH_DISP_ADDR_DELETE:
618 qeth_l2_remove_mac(card, mac->mac_addr);
619 hash_del(&mac->hnode);
622 case QETH_DISP_ADDR_ADD:
623 rc = qeth_l2_write_mac(card, mac->mac_addr);
625 hash_del(&mac->hnode);
631 /* for next call to set_rx_mode(): */
632 mac->disp_flag = QETH_DISP_ADDR_DELETE;
636 spin_unlock_bh(&card->mclock);
638 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
639 qeth_setadp_promisc_mode(card);
641 qeth_promisc_to_bridge(card);
644 static int qeth_l2_xmit(struct qeth_card *card, struct sk_buff *skb,
645 struct qeth_qdio_out_q *queue, int cast_type, int ipv)
647 const unsigned int proto_len = IS_IQD(card) ? ETH_HLEN : 0;
648 const unsigned int hw_hdr_len = sizeof(struct qeth_hdr);
649 unsigned int frame_len = skb->len;
650 unsigned int data_offset = 0;
651 struct qeth_hdr *hdr = NULL;
652 unsigned int hd_len = 0;
653 unsigned int elements;
657 rc = skb_cow_head(skb, hw_hdr_len);
661 push_len = qeth_add_hw_header(card, skb, &hdr, hw_hdr_len, proto_len,
666 /* HW header needs its own buffer element. */
667 hd_len = hw_hdr_len + proto_len;
668 data_offset = proto_len;
670 qeth_l2_fill_header(hdr, skb, cast_type, frame_len);
671 if (skb->ip_summed == CHECKSUM_PARTIAL) {
672 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv);
673 if (card->options.performance_stats)
674 card->perf_stats.tx_csum++;
677 is_sg = skb_is_nonlinear(skb);
679 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
682 /* TODO: drop skb_orphan() once TX completion is fast enough */
684 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
689 if (card->options.performance_stats) {
690 card->perf_stats.buf_elements_sent += elements;
692 card->perf_stats.sg_skbs_sent++;
696 kmem_cache_free(qeth_core_header_cache, hdr);
698 /* roll back to ETH header */
699 skb_pull(skb, push_len);
704 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
705 struct qeth_qdio_out_q *queue)
707 unsigned int elements;
708 struct qeth_hdr *hdr;
710 if (skb->protocol == htons(ETH_P_IPV6))
711 return -EPROTONOSUPPORT;
713 hdr = (struct qeth_hdr *)skb->data;
714 elements = qeth_get_elements_no(card, skb, 0, 0);
717 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr)))
719 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements);
722 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
723 struct net_device *dev)
725 struct qeth_card *card = dev->ml_priv;
726 int cast_type = qeth_l2_get_cast_type(card, skb);
727 int ipv = qeth_get_ip_version(skb);
728 struct qeth_qdio_out_q *queue;
729 int tx_bytes = skb->len;
732 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
733 card->stats.tx_carrier_errors++;
737 queue = qeth_get_tx_queue(card, skb, ipv, cast_type);
739 if (card->options.performance_stats) {
740 card->perf_stats.outbound_cnt++;
741 card->perf_stats.outbound_start_time = qeth_get_micros();
743 netif_stop_queue(dev);
746 rc = qeth_l2_xmit_osn(card, skb, queue);
748 rc = qeth_l2_xmit(card, skb, queue, cast_type, ipv);
751 card->stats.tx_packets++;
752 card->stats.tx_bytes += tx_bytes;
753 if (card->options.performance_stats)
754 card->perf_stats.outbound_time += qeth_get_micros() -
755 card->perf_stats.outbound_start_time;
756 netif_wake_queue(dev);
758 } else if (rc == -EBUSY) {
759 return NETDEV_TX_BUSY;
760 } /* else fall through */
763 card->stats.tx_dropped++;
764 card->stats.tx_errors++;
765 dev_kfree_skb_any(skb);
766 netif_wake_queue(dev);
770 static int __qeth_l2_open(struct net_device *dev)
772 struct qeth_card *card = dev->ml_priv;
775 QETH_CARD_TEXT(card, 4, "qethopen");
776 if (card->state == CARD_STATE_UP)
778 if (card->state != CARD_STATE_SOFTSETUP)
781 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
782 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
783 QETH_CARD_TEXT(card, 4, "nomacadr");
786 card->data.state = CH_STATE_UP;
787 card->state = CARD_STATE_UP;
788 netif_start_queue(dev);
790 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
791 napi_enable(&card->napi);
792 napi_schedule(&card->napi);
798 static int qeth_l2_open(struct net_device *dev)
800 struct qeth_card *card = dev->ml_priv;
802 QETH_CARD_TEXT(card, 5, "qethope_");
803 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
804 QETH_CARD_TEXT(card, 3, "openREC");
807 return __qeth_l2_open(dev);
810 static int qeth_l2_stop(struct net_device *dev)
812 struct qeth_card *card = dev->ml_priv;
814 QETH_CARD_TEXT(card, 4, "qethstop");
815 netif_tx_disable(dev);
816 if (card->state == CARD_STATE_UP) {
817 card->state = CARD_STATE_SOFTSETUP;
818 napi_disable(&card->napi);
823 static const struct device_type qeth_l2_devtype = {
824 .name = "qeth_layer2",
825 .groups = qeth_l2_attr_groups,
828 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
830 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
833 if (gdev->dev.type == &qeth_generic_devtype) {
834 rc = qeth_l2_create_device_attributes(&gdev->dev);
838 INIT_LIST_HEAD(&card->vid_list);
839 hash_init(card->mac_htable);
840 card->options.layer2 = 1;
841 card->info.hwtrap = 0;
842 qeth_l2_vnicc_set_defaults(card);
846 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
848 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
850 if (cgdev->dev.type == &qeth_generic_devtype)
851 qeth_l2_remove_device_attributes(&cgdev->dev);
852 qeth_set_allowed_threads(card, 0, 1);
853 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
855 if (cgdev->state == CCWGROUP_ONLINE)
856 qeth_l2_set_offline(cgdev);
857 unregister_netdev(card->dev);
860 static const struct ethtool_ops qeth_l2_ethtool_ops = {
861 .get_link = ethtool_op_get_link,
862 .get_strings = qeth_core_get_strings,
863 .get_ethtool_stats = qeth_core_get_ethtool_stats,
864 .get_sset_count = qeth_core_get_sset_count,
865 .get_drvinfo = qeth_core_get_drvinfo,
866 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
869 static const struct ethtool_ops qeth_l2_osn_ops = {
870 .get_strings = qeth_core_get_strings,
871 .get_ethtool_stats = qeth_core_get_ethtool_stats,
872 .get_sset_count = qeth_core_get_sset_count,
873 .get_drvinfo = qeth_core_get_drvinfo,
876 static const struct net_device_ops qeth_l2_netdev_ops = {
877 .ndo_open = qeth_l2_open,
878 .ndo_stop = qeth_l2_stop,
879 .ndo_get_stats = qeth_get_stats,
880 .ndo_start_xmit = qeth_l2_hard_start_xmit,
881 .ndo_features_check = qeth_features_check,
882 .ndo_validate_addr = eth_validate_addr,
883 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
884 .ndo_do_ioctl = qeth_do_ioctl,
885 .ndo_set_mac_address = qeth_l2_set_mac_address,
886 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
887 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
888 .ndo_tx_timeout = qeth_tx_timeout,
889 .ndo_fix_features = qeth_fix_features,
890 .ndo_set_features = qeth_set_features
893 static int qeth_l2_setup_netdev(struct qeth_card *card)
897 if (card->dev->netdev_ops)
900 card->dev->priv_flags |= IFF_UNICAST_FLT;
901 card->dev->netdev_ops = &qeth_l2_netdev_ops;
902 if (card->info.type == QETH_CARD_TYPE_OSN) {
903 card->dev->ethtool_ops = &qeth_l2_osn_ops;
904 card->dev->flags |= IFF_NOARP;
906 card->dev->ethtool_ops = &qeth_l2_ethtool_ops;
907 card->dev->needed_headroom = sizeof(struct qeth_hdr);
910 if (card->info.type == QETH_CARD_TYPE_OSM)
911 card->dev->features |= NETIF_F_VLAN_CHALLENGED;
913 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
915 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
916 card->dev->features |= NETIF_F_SG;
917 /* OSA 3S and earlier has no RX/TX support */
918 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
919 card->dev->hw_features |= NETIF_F_IP_CSUM;
920 card->dev->vlan_features |= NETIF_F_IP_CSUM;
923 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
924 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
925 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
927 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) ||
928 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) {
929 card->dev->hw_features |= NETIF_F_RXCSUM;
930 card->dev->vlan_features |= NETIF_F_RXCSUM;
933 qeth_l2_request_initial_mac(card);
934 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
935 rc = register_netdev(card->dev);
937 card->dev->netdev_ops = NULL;
941 static int qeth_l2_start_ipassists(struct qeth_card *card)
943 /* configure isolation level */
944 if (qeth_set_access_ctrl_online(card, 0))
949 static void qeth_l2_trace_features(struct qeth_card *card)
951 /* Set BridgePort features */
952 QETH_CARD_TEXT(card, 2, "featuSBP");
953 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
954 sizeof(card->options.sbp.supported_funcs));
955 /* VNIC Characteristics features */
956 QETH_CARD_TEXT(card, 2, "feaVNICC");
957 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
958 sizeof(card->options.vnicc.sup_chars));
961 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
963 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
965 enum qeth_card_states recover_flag;
967 mutex_lock(&card->discipline_mutex);
968 mutex_lock(&card->conf_mutex);
969 QETH_DBF_TEXT(SETUP, 2, "setonlin");
970 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
972 recover_flag = card->state;
973 rc = qeth_core_hardsetup_card(card);
975 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
979 qeth_bridgeport_query_support(card);
980 if (card->options.sbp.supported_funcs)
981 dev_info(&card->gdev->dev,
982 "The device represents a Bridge Capable Port\n");
984 rc = qeth_l2_setup_netdev(card);
988 if (card->info.type != QETH_CARD_TYPE_OSN &&
989 !qeth_l2_send_setmac(card, card->dev->dev_addr))
990 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
992 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
993 if (card->info.hwtrap &&
994 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
995 card->info.hwtrap = 0;
997 card->info.hwtrap = 0;
999 /* for the rx_bcast characteristic, init VNICC after setmac */
1000 qeth_l2_vnicc_init(card);
1002 qeth_trace_features(card);
1003 qeth_l2_trace_features(card);
1005 qeth_l2_setup_bridgeport_attrs(card);
1007 card->state = CARD_STATE_HARDSETUP;
1008 qeth_print_status_message(card);
1011 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1013 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1014 (card->info.type == QETH_CARD_TYPE_OSX)) {
1015 rc = qeth_l2_start_ipassists(card);
1020 if (card->info.type != QETH_CARD_TYPE_OSN)
1021 qeth_l2_process_vlans(card);
1023 netif_tx_disable(card->dev);
1025 rc = qeth_init_qdio_queues(card);
1027 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1031 card->state = CARD_STATE_SOFTSETUP;
1032 if (card->lan_online)
1033 netif_carrier_on(card->dev);
1035 netif_carrier_off(card->dev);
1037 qeth_set_allowed_threads(card, 0xffffffff, 0);
1039 qeth_enable_hw_features(card->dev);
1040 if (recover_flag == CARD_STATE_RECOVER) {
1041 if (recovery_mode &&
1042 card->info.type != QETH_CARD_TYPE_OSN) {
1043 __qeth_l2_open(card->dev);
1044 qeth_l2_set_rx_mode(card->dev);
1047 dev_open(card->dev);
1051 /* let user_space know that device is online */
1052 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1053 mutex_unlock(&card->conf_mutex);
1054 mutex_unlock(&card->discipline_mutex);
1058 qeth_l2_stop_card(card, 0);
1059 ccw_device_set_offline(CARD_DDEV(card));
1060 ccw_device_set_offline(CARD_WDEV(card));
1061 ccw_device_set_offline(CARD_RDEV(card));
1062 qdio_free(CARD_DDEV(card));
1063 if (recover_flag == CARD_STATE_RECOVER)
1064 card->state = CARD_STATE_RECOVER;
1066 card->state = CARD_STATE_DOWN;
1067 mutex_unlock(&card->conf_mutex);
1068 mutex_unlock(&card->discipline_mutex);
1072 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1074 return __qeth_l2_set_online(gdev, 0);
1077 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1080 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1081 int rc = 0, rc2 = 0, rc3 = 0;
1082 enum qeth_card_states recover_flag;
1084 mutex_lock(&card->discipline_mutex);
1085 mutex_lock(&card->conf_mutex);
1086 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1087 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1089 netif_carrier_off(card->dev);
1090 recover_flag = card->state;
1091 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1092 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1093 card->info.hwtrap = 1;
1095 qeth_l2_stop_card(card, recovery_mode);
1096 rc = ccw_device_set_offline(CARD_DDEV(card));
1097 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1098 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1100 rc = (rc2) ? rc2 : rc3;
1102 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1103 qdio_free(CARD_DDEV(card));
1104 if (recover_flag == CARD_STATE_UP)
1105 card->state = CARD_STATE_RECOVER;
1106 /* let user_space know that device is offline */
1107 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1108 mutex_unlock(&card->conf_mutex);
1109 mutex_unlock(&card->discipline_mutex);
1113 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1115 return __qeth_l2_set_offline(cgdev, 0);
1118 static int qeth_l2_recover(void *ptr)
1120 struct qeth_card *card;
1123 card = (struct qeth_card *) ptr;
1124 QETH_CARD_TEXT(card, 2, "recover1");
1125 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1127 QETH_CARD_TEXT(card, 2, "recover2");
1128 dev_warn(&card->gdev->dev,
1129 "A recovery process has been started for the device\n");
1130 qeth_set_recovery_task(card);
1131 __qeth_l2_set_offline(card->gdev, 1);
1132 rc = __qeth_l2_set_online(card->gdev, 1);
1134 dev_info(&card->gdev->dev,
1135 "Device successfully recovered!\n");
1137 qeth_close_dev(card);
1138 dev_warn(&card->gdev->dev, "The qeth device driver "
1139 "failed to recover an error on the device\n");
1141 qeth_clear_recovery_task(card);
1142 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1143 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1147 static int __init qeth_l2_init(void)
1149 pr_info("register layer 2 discipline\n");
1153 static void __exit qeth_l2_exit(void)
1155 pr_info("unregister layer 2 discipline\n");
1158 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1160 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1162 netif_device_detach(card->dev);
1163 qeth_set_allowed_threads(card, 0, 1);
1164 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1165 if (gdev->state == CCWGROUP_OFFLINE)
1167 if (card->state == CARD_STATE_UP) {
1168 if (card->info.hwtrap)
1169 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1170 __qeth_l2_set_offline(card->gdev, 1);
1172 __qeth_l2_set_offline(card->gdev, 0);
1176 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1178 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1181 if (gdev->state == CCWGROUP_OFFLINE)
1184 if (card->state == CARD_STATE_RECOVER) {
1185 rc = __qeth_l2_set_online(card->gdev, 1);
1188 dev_close(card->dev);
1192 rc = __qeth_l2_set_online(card->gdev, 0);
1194 qeth_set_allowed_threads(card, 0xffffffff, 0);
1195 netif_device_attach(card->dev);
1197 dev_warn(&card->gdev->dev, "The qeth device driver "
1198 "failed to recover an error on the device\n");
1202 /* Returns zero if the command is successfully "consumed" */
1203 static int qeth_l2_control_event(struct qeth_card *card,
1204 struct qeth_ipa_cmd *cmd)
1206 switch (cmd->hdr.command) {
1207 case IPA_CMD_SETBRIDGEPORT_OSA:
1208 case IPA_CMD_SETBRIDGEPORT_IQD:
1209 if (cmd->data.sbp.hdr.command_code ==
1210 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1211 qeth_bridge_state_change(card, cmd);
1215 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1216 qeth_bridge_host_event(card, cmd);
1223 struct qeth_discipline qeth_l2_discipline = {
1224 .devtype = &qeth_l2_devtype,
1225 .process_rx_buffer = qeth_l2_process_inbound_buffer,
1226 .recover = qeth_l2_recover,
1227 .setup = qeth_l2_probe_device,
1228 .remove = qeth_l2_remove_device,
1229 .set_online = qeth_l2_set_online,
1230 .set_offline = qeth_l2_set_offline,
1231 .freeze = qeth_l2_pm_suspend,
1232 .thaw = qeth_l2_pm_resume,
1233 .restore = qeth_l2_pm_resume,
1235 .control_event_handler = qeth_l2_control_event,
1237 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1239 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1240 struct qeth_cmd_buffer *iob)
1242 struct qeth_channel *channel = iob->channel;
1243 unsigned long flags;
1246 QETH_CARD_TEXT(card, 5, "osndctrd");
1248 wait_event(card->wait_q,
1249 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1250 qeth_prepare_control_data(card, len, iob);
1251 QETH_CARD_TEXT(card, 6, "osnoirqp");
1252 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1253 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1254 (addr_t) iob, 0, 0, QETH_IPA_TIMEOUT);
1255 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1257 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1258 "ccw_device_start rc = %i\n", rc);
1259 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1260 qeth_release_buffer(channel, iob);
1261 atomic_set(&channel->irq_pending, 0);
1262 wake_up(&card->wait_q);
1267 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1268 struct qeth_cmd_buffer *iob, int data_len)
1272 QETH_CARD_TEXT(card, 4, "osndipa");
1274 qeth_prepare_ipa_cmd(card, iob);
1275 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1277 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1278 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1279 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1280 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1281 return qeth_osn_send_control_data(card, s1, iob);
1284 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1286 struct qeth_cmd_buffer *iob;
1287 struct qeth_card *card;
1291 card = dev->ml_priv;
1294 QETH_CARD_TEXT(card, 2, "osnsdmc");
1295 if (!qeth_card_hw_is_reachable(card))
1297 iob = qeth_wait_for_buffer(&card->write);
1298 memcpy(__ipa_cmd(iob), data, data_len);
1299 return qeth_osn_send_ipa_cmd(card, iob, data_len);
1301 EXPORT_SYMBOL(qeth_osn_assist);
1303 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1304 int (*assist_cb)(struct net_device *, void *),
1305 int (*data_cb)(struct sk_buff *))
1307 struct qeth_card *card;
1309 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1312 card = (*dev)->ml_priv;
1315 QETH_CARD_TEXT(card, 2, "osnreg");
1316 if ((assist_cb == NULL) || (data_cb == NULL))
1318 card->osn_info.assist_cb = assist_cb;
1319 card->osn_info.data_cb = data_cb;
1322 EXPORT_SYMBOL(qeth_osn_register);
1324 void qeth_osn_deregister(struct net_device *dev)
1326 struct qeth_card *card;
1330 card = dev->ml_priv;
1333 QETH_CARD_TEXT(card, 2, "osndereg");
1334 card->osn_info.assist_cb = NULL;
1335 card->osn_info.data_cb = NULL;
1338 EXPORT_SYMBOL(qeth_osn_deregister);
1340 /* SETBRIDGEPORT support, async notifications */
1342 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1345 * qeth_bridge_emit_host_event() - bridgeport address change notification
1346 * @card: qeth_card structure pointer, for udev events.
1347 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1348 * and reset token and addr_lnid are unused and may be NULL.
1349 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1350 * object, 0 - addition of an object.
1351 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1352 * @token: "network token" structure identifying physical address of the port.
1353 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1355 * This function is called when registrations and deregistrations are
1356 * reported by the hardware, and also when notifications are enabled -
1357 * for all currently registered addresses.
1359 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1360 enum qeth_an_event_type evtype,
1361 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1368 case anev_reg_unreg:
1369 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1370 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1371 ? "deregister" : "register");
1372 env[i] = str[i]; i++;
1373 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1374 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1376 env[i] = str[i]; i++;
1378 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1379 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1381 env[i] = str[i]; i++;
1383 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1384 token->cssid, token->ssid, token->devnum);
1385 env[i] = str[i]; i++;
1386 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1387 env[i] = str[i]; i++;
1388 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1390 env[i] = str[i]; i++;
1391 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1392 env[i] = str[i]; i++;
1395 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1396 env[i] = str[i]; i++;
1399 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1400 env[i] = str[i]; i++;
1404 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1407 struct qeth_bridge_state_data {
1408 struct work_struct worker;
1409 struct qeth_card *card;
1410 struct qeth_sbp_state_change qports;
1413 static void qeth_bridge_state_change_worker(struct work_struct *work)
1415 struct qeth_bridge_state_data *data =
1416 container_of(work, struct qeth_bridge_state_data, worker);
1417 /* We are only interested in the first entry - local port */
1418 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1419 char env_locrem[32];
1429 /* Role should not change by itself, but if it did, */
1430 /* information from the hardware is authoritative. */
1431 mutex_lock(&data->card->conf_mutex);
1432 data->card->options.sbp.role = entry->role;
1433 mutex_unlock(&data->card->conf_mutex);
1435 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1436 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1437 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1438 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1439 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1441 snprintf(env_state, sizeof(env_state), "STATE=%s",
1442 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1443 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1444 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1446 kobject_uevent_env(&data->card->gdev->dev.kobj,
1451 static void qeth_bridge_state_change(struct qeth_card *card,
1452 struct qeth_ipa_cmd *cmd)
1454 struct qeth_sbp_state_change *qports =
1455 &cmd->data.sbp.data.state_change;
1456 struct qeth_bridge_state_data *data;
1459 QETH_CARD_TEXT(card, 2, "brstchng");
1460 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1461 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1464 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1465 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1468 QETH_CARD_TEXT(card, 2, "BPSalloc");
1471 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1473 memcpy(&data->qports, qports,
1474 sizeof(struct qeth_sbp_state_change) + extrasize);
1475 queue_work(qeth_wq, &data->worker);
1478 struct qeth_bridge_host_data {
1479 struct work_struct worker;
1480 struct qeth_card *card;
1481 struct qeth_ipacmd_addr_change hostevs;
1484 static void qeth_bridge_host_event_worker(struct work_struct *work)
1486 struct qeth_bridge_host_data *data =
1487 container_of(work, struct qeth_bridge_host_data, worker);
1490 if (data->hostevs.lost_event_mask) {
1491 dev_info(&data->card->gdev->dev,
1492 "Address notification from the Bridge Port stopped %s (%s)\n",
1493 data->card->dev->name,
1494 (data->hostevs.lost_event_mask == 0x01)
1496 : (data->hostevs.lost_event_mask == 0x02)
1497 ? "Bridge port state change"
1498 : "Unknown reason");
1499 mutex_lock(&data->card->conf_mutex);
1500 data->card->options.sbp.hostnotification = 0;
1501 mutex_unlock(&data->card->conf_mutex);
1502 qeth_bridge_emit_host_event(data->card, anev_abort,
1505 for (i = 0; i < data->hostevs.num_entries; i++) {
1506 struct qeth_ipacmd_addr_change_entry *entry =
1507 &data->hostevs.entry[i];
1508 qeth_bridge_emit_host_event(data->card,
1511 &entry->token, &entry->addr_lnid);
1516 static void qeth_bridge_host_event(struct qeth_card *card,
1517 struct qeth_ipa_cmd *cmd)
1519 struct qeth_ipacmd_addr_change *hostevs =
1520 &cmd->data.addrchange;
1521 struct qeth_bridge_host_data *data;
1524 QETH_CARD_TEXT(card, 2, "brhostev");
1525 if (cmd->hdr.return_code != 0x0000) {
1526 if (cmd->hdr.return_code == 0x0010) {
1527 if (hostevs->lost_event_mask == 0x00)
1528 hostevs->lost_event_mask = 0xff;
1530 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1531 cmd->hdr.return_code);
1535 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1536 hostevs->num_entries;
1537 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1540 QETH_CARD_TEXT(card, 2, "BPHalloc");
1543 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1545 memcpy(&data->hostevs, hostevs,
1546 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1547 queue_work(qeth_wq, &data->worker);
1550 /* SETBRIDGEPORT support; sending commands */
1552 struct _qeth_sbp_cbctl {
1558 enum qeth_sbp_roles *role;
1559 enum qeth_sbp_states *state;
1565 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1566 * @card: qeth_card structure pointer, for debug messages.
1567 * @cbctl: state structure with hardware return codes.
1568 * @setcmd: IPA command code
1570 * Returns negative errno-compatible error indication or 0 on success.
1572 static int qeth_bridgeport_makerc(struct qeth_card *card,
1573 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1576 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1578 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1579 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1580 switch (cbctl->cmd_rc) {
1581 case IPA_RC_SUCCESS:
1584 case IPA_RC_L2_UNSUPPORTED_CMD:
1585 case IPA_RC_UNSUPPORTED_COMMAND:
1588 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1589 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1590 rc = -ENODEV; /* maybe not the best code here? */
1591 dev_err(&card->gdev->dev,
1592 "The device is not configured as a Bridge Port\n");
1594 case IPA_RC_SBP_OSA_OS_MISMATCH:
1595 case IPA_RC_SBP_IQD_OS_MISMATCH:
1597 dev_err(&card->gdev->dev,
1598 "A Bridge Port is already configured by a different operating system\n");
1600 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1601 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1603 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1605 dev_err(&card->gdev->dev,
1606 "The LAN already has a primary Bridge Port\n");
1608 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1610 dev_err(&card->gdev->dev,
1611 "The device is already a primary Bridge Port\n");
1617 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1618 case IPA_RC_SBP_IQD_CURRENT_SECOND:
1620 dev_err(&card->gdev->dev,
1621 "The device is already a secondary Bridge Port\n");
1623 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1624 case IPA_RC_SBP_IQD_LIMIT_SECOND:
1626 dev_err(&card->gdev->dev,
1627 "The LAN cannot have more secondary Bridge Ports\n");
1629 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1630 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1632 dev_err(&card->gdev->dev,
1633 "The device is already a primary Bridge Port\n");
1635 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1636 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1638 dev_err(&card->gdev->dev,
1639 "The device is not authorized to be a Bridge Port\n");
1645 switch (cbctl->ipa_rc) {
1646 case IPA_RC_NOTSUPP:
1649 case IPA_RC_UNSUPPORTED_COMMAND:
1657 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1658 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1663 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1664 enum qeth_ipa_sbp_cmd sbp_cmd,
1665 unsigned int cmd_length)
1667 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ?
1668 IPA_CMD_SETBRIDGEPORT_IQD :
1669 IPA_CMD_SETBRIDGEPORT_OSA;
1670 struct qeth_cmd_buffer *iob;
1671 struct qeth_ipa_cmd *cmd;
1673 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0);
1676 cmd = __ipa_cmd(iob);
1677 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1679 cmd->data.sbp.hdr.command_code = sbp_cmd;
1680 cmd->data.sbp.hdr.used_total = 1;
1681 cmd->data.sbp.hdr.seq_no = 1;
1685 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1686 struct qeth_reply *reply, unsigned long data)
1688 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1689 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1690 QETH_CARD_TEXT(card, 2, "brqsupcb");
1691 cbctl->ipa_rc = cmd->hdr.return_code;
1692 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1693 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1694 cbctl->data.supported =
1695 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1697 cbctl->data.supported = 0;
1703 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1704 * @card: qeth_card structure pointer.
1706 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1707 * strucutre: card->options.sbp.supported_funcs.
1709 static void qeth_bridgeport_query_support(struct qeth_card *card)
1711 struct qeth_cmd_buffer *iob;
1712 struct _qeth_sbp_cbctl cbctl;
1714 QETH_CARD_TEXT(card, 2, "brqsuppo");
1715 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1716 sizeof(struct qeth_sbp_query_cmds_supp));
1719 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1721 qeth_bridgeport_makerc(card, &cbctl,
1722 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1723 /* non-zero makerc signifies failure, and produce messages */
1724 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1727 card->options.sbp.supported_funcs = cbctl.data.supported;
1730 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1731 struct qeth_reply *reply, unsigned long data)
1733 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1734 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1735 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1737 QETH_CARD_TEXT(card, 2, "brqprtcb");
1738 cbctl->ipa_rc = cmd->hdr.return_code;
1739 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1740 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1742 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1743 cbctl->cmd_rc = 0xffff;
1744 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1747 /* first entry contains the state of the local port */
1748 if (qports->num_entries > 0) {
1749 if (cbctl->data.qports.role)
1750 *cbctl->data.qports.role = qports->entry[0].role;
1751 if (cbctl->data.qports.state)
1752 *cbctl->data.qports.state = qports->entry[0].state;
1758 * qeth_bridgeport_query_ports() - query local bridgeport status.
1759 * @card: qeth_card structure pointer.
1760 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1761 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1763 * Returns negative errno-compatible error indication or 0 on success.
1765 * 'role' and 'state' are not updated in case of hardware operation failure.
1767 int qeth_bridgeport_query_ports(struct qeth_card *card,
1768 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1771 struct qeth_cmd_buffer *iob;
1772 struct _qeth_sbp_cbctl cbctl = {
1781 QETH_CARD_TEXT(card, 2, "brqports");
1782 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1784 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1787 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1791 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1794 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1795 struct qeth_reply *reply, unsigned long data)
1797 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1798 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1799 QETH_CARD_TEXT(card, 2, "brsetrcb");
1800 cbctl->ipa_rc = cmd->hdr.return_code;
1801 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1806 * qeth_bridgeport_setrole() - Assign primary role to the port.
1807 * @card: qeth_card structure pointer.
1808 * @role: Role to assign.
1810 * Returns negative errno-compatible error indication or 0 on success.
1812 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1816 struct qeth_cmd_buffer *iob;
1817 struct _qeth_sbp_cbctl cbctl;
1818 enum qeth_ipa_sbp_cmd setcmd;
1820 QETH_CARD_TEXT(card, 2, "brsetrol");
1822 case QETH_SBP_ROLE_NONE:
1823 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1824 cmdlength = sizeof(struct qeth_sbp_reset_role);
1826 case QETH_SBP_ROLE_PRIMARY:
1827 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1828 cmdlength = sizeof(struct qeth_sbp_set_primary);
1830 case QETH_SBP_ROLE_SECONDARY:
1831 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1832 cmdlength = sizeof(struct qeth_sbp_set_secondary);
1837 if (!(card->options.sbp.supported_funcs & setcmd))
1839 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1842 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1846 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
1850 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1851 * @card: qeth_card structure pointer, for debug messages.
1853 * Returns negative errno-compatible error indication or 0 on success.
1855 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1868 dev_err(&card->gdev->dev,
1869 "Setting address notification failed\n");
1881 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1882 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1887 static void qeth_bridgeport_an_set_cb(void *priv,
1888 enum qdio_brinfo_entry_type type, void *entry)
1890 struct qeth_card *card = (struct qeth_card *)priv;
1891 struct qdio_brinfo_entry_l2 *l2entry;
1894 if (type != l2_addr_lnid) {
1899 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1900 code = IPA_ADDR_CHANGE_CODE_MACADDR;
1901 if (l2entry->addr_lnid.lnid)
1902 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1903 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1904 (struct net_if_token *)&l2entry->nit,
1905 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1909 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1910 * @card: qeth_card structure pointer.
1911 * @enable: 0 - disable, non-zero - enable notifications
1913 * Returns negative errno-compatible error indication or 0 on success.
1915 * On enable, emits a series of address notifications udev events for all
1916 * currently registered hosts.
1918 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1922 struct ccw_device *ddev;
1923 struct subchannel_id schid;
1927 if (!card->options.sbp.supported_funcs)
1929 ddev = CARD_DDEV(card);
1930 ccw_device_get_schid(ddev, &schid);
1933 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1934 rc = qdio_pnso_brinfo(schid, 1, &response,
1935 qeth_bridgeport_an_set_cb, card);
1937 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
1938 return qeth_anset_makerc(card, rc, response);
1941 static bool qeth_bridgeport_is_in_use(struct qeth_card *card)
1943 return (card->options.sbp.role || card->options.sbp.reflect_promisc ||
1944 card->options.sbp.hostnotification);
1947 /* VNIC Characteristics support */
1949 /* handle VNICC IPA command return codes; convert to error codes */
1950 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc)
1955 case IPA_RC_SUCCESS:
1957 case IPA_RC_L2_UNSUPPORTED_CMD:
1958 case IPA_RC_NOTSUPP:
1961 case IPA_RC_VNICC_OOSEQ:
1964 case IPA_RC_VNICC_VNICBP:
1967 case IPA_RC_L2_ADDR_TABLE_FULL:
1970 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
1977 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
1981 /* generic VNICC request call back control */
1982 struct _qeth_l2_vnicc_request_cbctl {
1996 /* generic VNICC request call back */
1997 static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
1998 struct qeth_reply *reply,
2001 struct _qeth_l2_vnicc_request_cbctl *cbctl =
2002 (struct _qeth_l2_vnicc_request_cbctl *) reply->param;
2003 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2004 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
2006 QETH_CARD_TEXT(card, 2, "vniccrcb");
2007 if (cmd->hdr.return_code)
2009 /* return results to caller */
2010 card->options.vnicc.sup_chars = rep->hdr.sup;
2011 card->options.vnicc.cur_chars = rep->hdr.cur;
2013 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS)
2014 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds;
2016 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT)
2017 *cbctl->result.timeout = rep->getset_timeout.timeout;
2022 /* generic VNICC request */
2023 static int qeth_l2_vnicc_request(struct qeth_card *card,
2024 struct _qeth_l2_vnicc_request_cbctl *cbctl)
2026 struct qeth_ipacmd_vnicc *req;
2027 struct qeth_cmd_buffer *iob;
2028 struct qeth_ipa_cmd *cmd;
2031 QETH_CARD_TEXT(card, 2, "vniccreq");
2033 /* get new buffer for request */
2034 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0);
2038 /* create header for request */
2039 cmd = __ipa_cmd(iob);
2040 req = &cmd->data.vnicc;
2042 /* create sub command header for request */
2043 req->sub_hdr.data_length = sizeof(req->sub_hdr);
2044 req->sub_hdr.sub_command = cbctl->sub_cmd;
2046 /* create sub command specific request fields */
2047 switch (cbctl->sub_cmd) {
2048 case IPA_VNICC_QUERY_CHARS:
2050 case IPA_VNICC_QUERY_CMDS:
2051 req->sub_hdr.data_length += sizeof(req->query_cmds);
2052 req->query_cmds.vnic_char = cbctl->param.vnic_char;
2054 case IPA_VNICC_ENABLE:
2055 case IPA_VNICC_DISABLE:
2056 req->sub_hdr.data_length += sizeof(req->set_char);
2057 req->set_char.vnic_char = cbctl->param.vnic_char;
2059 case IPA_VNICC_SET_TIMEOUT:
2060 req->getset_timeout.timeout = cbctl->param.timeout;
2062 case IPA_VNICC_GET_TIMEOUT:
2063 req->sub_hdr.data_length += sizeof(req->getset_timeout);
2064 req->getset_timeout.vnic_char = cbctl->param.vnic_char;
2067 qeth_release_buffer(iob->channel, iob);
2072 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb,
2075 return qeth_l2_vnicc_makerc(card, rc);
2078 /* VNICC query VNIC characteristics request */
2079 static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
2081 struct _qeth_l2_vnicc_request_cbctl cbctl;
2083 /* prepare callback control */
2084 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS;
2086 QETH_CARD_TEXT(card, 2, "vniccqch");
2087 return qeth_l2_vnicc_request(card, &cbctl);
2090 /* VNICC query sub commands request */
2091 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
2094 struct _qeth_l2_vnicc_request_cbctl cbctl;
2096 /* prepare callback control */
2097 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS;
2098 cbctl.param.vnic_char = vnic_char;
2099 cbctl.result.sup_cmds = sup_cmds;
2101 QETH_CARD_TEXT(card, 2, "vniccqcm");
2102 return qeth_l2_vnicc_request(card, &cbctl);
2105 /* VNICC enable/disable characteristic request */
2106 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
2109 struct _qeth_l2_vnicc_request_cbctl cbctl;
2111 /* prepare callback control */
2112 cbctl.sub_cmd = cmd;
2113 cbctl.param.vnic_char = vnic_char;
2115 QETH_CARD_TEXT(card, 2, "vniccedc");
2116 return qeth_l2_vnicc_request(card, &cbctl);
2119 /* VNICC get/set timeout for characteristic request */
2120 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
2121 u32 cmd, u32 *timeout)
2123 struct _qeth_l2_vnicc_request_cbctl cbctl;
2125 /* prepare callback control */
2126 cbctl.sub_cmd = cmd;
2127 cbctl.param.vnic_char = vnicc;
2128 if (cmd == IPA_VNICC_SET_TIMEOUT)
2129 cbctl.param.timeout = *timeout;
2130 if (cmd == IPA_VNICC_GET_TIMEOUT)
2131 cbctl.result.timeout = timeout;
2133 QETH_CARD_TEXT(card, 2, "vniccgst");
2134 return qeth_l2_vnicc_request(card, &cbctl);
2137 /* set current VNICC flag state; called from sysfs store function */
2138 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
2143 QETH_CARD_TEXT(card, 2, "vniccsch");
2145 /* do not change anything if BridgePort is enabled */
2146 if (qeth_bridgeport_is_in_use(card))
2149 /* check if characteristic and enable/disable are supported */
2150 if (!(card->options.vnicc.sup_chars & vnicc) ||
2151 !(card->options.vnicc.set_char_sup & vnicc))
2154 /* set enable/disable command and store wanted characteristic */
2156 cmd = IPA_VNICC_ENABLE;
2157 card->options.vnicc.wanted_chars |= vnicc;
2159 cmd = IPA_VNICC_DISABLE;
2160 card->options.vnicc.wanted_chars &= ~vnicc;
2163 /* do we need to do anything? */
2164 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
2167 /* if card is not ready, simply stop here */
2168 if (!qeth_card_hw_is_reachable(card)) {
2170 card->options.vnicc.cur_chars |= vnicc;
2172 card->options.vnicc.cur_chars &= ~vnicc;
2176 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
2178 card->options.vnicc.wanted_chars =
2179 card->options.vnicc.cur_chars;
2181 /* successful online VNICC change; handle special cases */
2182 if (state && vnicc == QETH_VNICC_RX_BCAST)
2183 card->options.vnicc.rx_bcast_enabled = true;
2184 if (!state && vnicc == QETH_VNICC_LEARNING)
2185 qeth_l2_vnicc_recover_timeout(card, vnicc,
2186 &card->options.vnicc.learning_timeout);
2192 /* get current VNICC flag state; called from sysfs show function */
2193 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
2197 QETH_CARD_TEXT(card, 2, "vniccgch");
2199 /* do not get anything if BridgePort is enabled */
2200 if (qeth_bridgeport_is_in_use(card))
2203 /* check if characteristic is supported */
2204 if (!(card->options.vnicc.sup_chars & vnicc))
2207 /* if card is ready, query current VNICC state */
2208 if (qeth_card_hw_is_reachable(card))
2209 rc = qeth_l2_vnicc_query_chars(card);
2211 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
2215 /* set VNICC timeout; called from sysfs store function. Currently, only learning
2218 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
2222 QETH_CARD_TEXT(card, 2, "vniccsto");
2224 /* do not change anything if BridgePort is enabled */
2225 if (qeth_bridgeport_is_in_use(card))
2228 /* check if characteristic and set_timeout are supported */
2229 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2230 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2233 /* do we need to do anything? */
2234 if (card->options.vnicc.learning_timeout == timeout)
2237 /* if card is not ready, simply store the value internally and return */
2238 if (!qeth_card_hw_is_reachable(card)) {
2239 card->options.vnicc.learning_timeout = timeout;
2243 /* send timeout value to card; if successful, store value internally */
2244 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2245 IPA_VNICC_SET_TIMEOUT, &timeout);
2247 card->options.vnicc.learning_timeout = timeout;
2252 /* get current VNICC timeout; called from sysfs show function. Currently, only
2253 * learning supports timeout
2255 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
2259 QETH_CARD_TEXT(card, 2, "vniccgto");
2261 /* do not get anything if BridgePort is enabled */
2262 if (qeth_bridgeport_is_in_use(card))
2265 /* check if characteristic and get_timeout are supported */
2266 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2267 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2269 /* if card is ready, get timeout. Otherwise, just return stored value */
2270 *timeout = card->options.vnicc.learning_timeout;
2271 if (qeth_card_hw_is_reachable(card))
2272 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2273 IPA_VNICC_GET_TIMEOUT,
2279 /* check if VNICC is currently enabled */
2280 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card)
2282 /* if everything is turned off, VNICC is not active */
2283 if (!card->options.vnicc.cur_chars)
2285 /* default values are only OK if rx_bcast was not enabled by user
2286 * or the card is offline.
2288 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
2289 if (!card->options.vnicc.rx_bcast_enabled ||
2290 !qeth_card_hw_is_reachable(card))
2296 /* recover user timeout setting */
2297 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
2300 if (card->options.vnicc.sup_chars & vnicc &&
2301 card->options.vnicc.getset_timeout_sup & vnicc &&
2302 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
2305 *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2309 /* recover user characteristic setting */
2310 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2313 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2315 if (card->options.vnicc.sup_chars & vnicc &&
2316 card->options.vnicc.set_char_sup & vnicc &&
2317 !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2319 card->options.vnicc.wanted_chars &= ~vnicc;
2320 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2324 /* (re-)initialize VNICC */
2325 static void qeth_l2_vnicc_init(struct qeth_card *card)
2327 u32 *timeout = &card->options.vnicc.learning_timeout;
2328 unsigned int chars_len, i;
2329 unsigned long chars_tmp;
2330 u32 sup_cmds, vnicc;
2333 QETH_CARD_TEXT(card, 2, "vniccini");
2334 /* reset rx_bcast */
2335 card->options.vnicc.rx_bcast_enabled = 0;
2336 /* initial query and storage of VNIC characteristics */
2337 if (qeth_l2_vnicc_query_chars(card)) {
2338 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2339 *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
2340 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2341 /* fail quietly if user didn't change the default config */
2342 card->options.vnicc.sup_chars = 0;
2343 card->options.vnicc.cur_chars = 0;
2344 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2347 /* get supported commands for each supported characteristic */
2348 chars_tmp = card->options.vnicc.sup_chars;
2349 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2350 for_each_set_bit(i, &chars_tmp, chars_len) {
2352 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds);
2353 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) ||
2354 !(sup_cmds & IPA_VNICC_GET_TIMEOUT))
2355 card->options.vnicc.getset_timeout_sup &= ~vnicc;
2356 if (!(sup_cmds & IPA_VNICC_ENABLE) ||
2357 !(sup_cmds & IPA_VNICC_DISABLE))
2358 card->options.vnicc.set_char_sup &= ~vnicc;
2360 /* enforce assumed default values and recover settings, if changed */
2361 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2363 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT;
2364 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE;
2365 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2366 for_each_set_bit(i, &chars_tmp, chars_len) {
2368 enable = card->options.vnicc.wanted_chars & vnicc;
2369 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2372 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2375 /* configure default values of VNIC characteristics */
2376 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2378 /* characteristics values */
2379 card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2380 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
2381 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2382 /* supported commands */
2383 card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
2384 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
2385 /* settings wanted by users */
2386 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2389 module_init(qeth_l2_init);
2390 module_exit(qeth_l2_exit);
2391 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2392 MODULE_DESCRIPTION("qeth layer 2 discipline");
2393 MODULE_LICENSE("GPL");