2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/slab.h>
18 #include <linux/etherdevice.h>
19 #include <linux/mii.h>
21 #include <linux/list.h>
22 #include <linux/hash.h>
23 #include <linux/hashtable.h>
24 #include <linux/string.h>
25 #include "qeth_core.h"
28 static int qeth_l2_set_offline(struct ccwgroup_device *);
29 static int qeth_l2_stop(struct net_device *);
30 static void qeth_l2_set_rx_mode(struct net_device *);
31 static int qeth_l2_recover(void *);
32 static void qeth_bridgeport_query_support(struct qeth_card *card);
33 static void qeth_bridge_state_change(struct qeth_card *card,
34 struct qeth_ipa_cmd *cmd);
35 static void qeth_bridge_host_event(struct qeth_card *card,
36 struct qeth_ipa_cmd *cmd);
38 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
40 struct qeth_card *card = dev->ml_priv;
41 struct mii_ioctl_data *mii_data;
47 if (!qeth_card_hw_is_reachable(card))
50 if (card->info.type == QETH_CARD_TYPE_OSN)
54 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
55 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
57 case SIOC_QETH_GET_CARD_TYPE:
58 if ((card->info.type == QETH_CARD_TYPE_OSD ||
59 card->info.type == QETH_CARD_TYPE_OSM ||
60 card->info.type == QETH_CARD_TYPE_OSX) &&
66 mii_data = if_mii(rq);
70 mii_data = if_mii(rq);
71 if (mii_data->phy_id != 0)
74 mii_data->val_out = qeth_mdio_read(dev,
75 mii_data->phy_id, mii_data->reg_num);
77 case SIOC_QETH_QUERY_OAT:
78 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
84 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
88 static int qeth_l2_verify_dev(struct net_device *dev)
90 struct qeth_card *card;
94 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
95 list_for_each_entry(card, &qeth_core_card_list.list, list) {
96 if (card->dev == dev) {
101 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
106 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
108 struct qeth_card *card;
109 struct net_device *ndev;
112 struct ccw_dev_id read_devid;
115 memcpy(&temp_dev_no, read_dev_no, 2);
116 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
117 list_for_each_entry(card, &qeth_core_card_list.list, list) {
118 ccw_device_get_id(CARD_RDEV(card), &read_devid);
119 if (read_devid.devno == temp_dev_no) {
124 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
128 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
133 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
138 case IPA_RC_L2_UNSUPPORTED_CMD:
141 case IPA_RC_L2_ADDR_TABLE_FULL:
144 case IPA_RC_L2_DUP_MAC:
145 case IPA_RC_L2_DUP_LAYER3_MAC:
148 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
149 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
152 case IPA_RC_L2_MAC_NOT_FOUND:
165 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
166 enum qeth_ipa_cmds ipacmd)
168 struct qeth_ipa_cmd *cmd;
169 struct qeth_cmd_buffer *iob;
171 QETH_CARD_TEXT(card, 2, "L2sdmac");
172 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
175 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
176 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
177 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
178 return qeth_setdel_makerc(card, qeth_send_ipa_cmd(card, iob,
182 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
186 QETH_CARD_TEXT(card, 2, "L2Setmac");
187 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
189 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
190 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
191 dev_info(&card->gdev->dev,
192 "MAC address %pM successfully registered on device %s\n",
193 card->dev->dev_addr, card->dev->name);
195 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
198 dev_warn(&card->gdev->dev,
199 "MAC address %pM already exists\n", mac);
202 dev_warn(&card->gdev->dev,
203 "MAC address %pM is not authorized\n", mac);
210 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
214 QETH_CARD_TEXT(card, 2, "L2Delmac");
215 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
217 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC);
219 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
223 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
227 QETH_CARD_TEXT(card, 2, "L2Sgmac");
228 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC);
230 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
231 mac, QETH_CARD_IFNAME(card));
233 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
234 mac, QETH_CARD_IFNAME(card), rc);
238 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
242 QETH_CARD_TEXT(card, 2, "L2Dgmac");
243 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC);
246 "Could not delete group MAC %pM on %s: %d\n",
247 mac, QETH_CARD_IFNAME(card), rc);
251 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
254 return qeth_l2_send_setdelmac(card, mac->mac_addr,
257 return qeth_l2_send_setgroupmac(card, mac->mac_addr);
261 static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac)
264 return qeth_l2_send_setdelmac(card, mac->mac_addr,
267 return qeth_l2_send_delgroupmac(card, mac->mac_addr);
271 static void qeth_l2_del_all_macs(struct qeth_card *card)
273 struct qeth_mac *mac;
274 struct hlist_node *tmp;
277 spin_lock_bh(&card->mclock);
278 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
279 hash_del(&mac->hnode);
282 spin_unlock_bh(&card->mclock);
285 static inline u32 qeth_l2_mac_hash(const u8 *addr)
287 return get_unaligned((u32 *)(&addr[2]));
290 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
293 if (card->info.type == QETH_CARD_TYPE_OSN)
295 if (is_broadcast_ether_addr(skb->data))
296 return RTN_BROADCAST;
297 if (is_multicast_ether_addr(skb->data))
298 return RTN_MULTICAST;
302 static inline void qeth_l2_hdr_csum(struct qeth_card *card,
303 struct qeth_hdr *hdr, struct sk_buff *skb)
305 struct iphdr *iph = ip_hdr(skb);
307 /* tcph->check contains already the pseudo hdr checksum
308 * so just set the header flags
310 if (iph->protocol == IPPROTO_UDP)
311 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
312 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
313 QETH_HDR_EXT_CSUM_HDR_REQ;
315 if (card->options.performance_stats)
316 card->perf_stats.tx_csum++;
319 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
320 struct sk_buff *skb, int cast_type)
322 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
324 memset(hdr, 0, sizeof(struct qeth_hdr));
325 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
327 /* set byte byte 3 to casting flags */
328 if (cast_type == RTN_MULTICAST)
329 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
330 else if (cast_type == RTN_BROADCAST)
331 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
333 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
335 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
336 /* VSWITCH relies on the VLAN
337 * information to be present in
339 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
340 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
341 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
345 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
346 struct qeth_reply *reply, unsigned long data)
348 struct qeth_ipa_cmd *cmd;
350 QETH_CARD_TEXT(card, 2, "L2sdvcb");
351 cmd = (struct qeth_ipa_cmd *) data;
352 if (cmd->hdr.return_code) {
353 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
354 "Continuing\n", cmd->data.setdelvlan.vlan_id,
355 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
356 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
357 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
362 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
363 enum qeth_ipa_cmds ipacmd)
365 struct qeth_ipa_cmd *cmd;
366 struct qeth_cmd_buffer *iob;
368 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
369 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
372 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
373 cmd->data.setdelvlan.vlan_id = i;
374 return qeth_send_ipa_cmd(card, iob,
375 qeth_l2_send_setdelvlan_cb, NULL);
378 static void qeth_l2_process_vlans(struct qeth_card *card)
380 struct qeth_vlan_vid *id;
381 QETH_CARD_TEXT(card, 3, "L2prcvln");
382 spin_lock_bh(&card->vlanlock);
383 list_for_each_entry(id, &card->vid_list, list) {
384 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
386 spin_unlock_bh(&card->vlanlock);
389 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
390 __be16 proto, u16 vid)
392 struct qeth_card *card = dev->ml_priv;
393 struct qeth_vlan_vid *id;
396 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
399 if (card->info.type == QETH_CARD_TYPE_OSM) {
400 QETH_CARD_TEXT(card, 3, "aidOSM");
403 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
404 QETH_CARD_TEXT(card, 3, "aidREC");
407 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
410 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
415 spin_lock_bh(&card->vlanlock);
416 list_add_tail(&id->list, &card->vid_list);
417 spin_unlock_bh(&card->vlanlock);
424 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
425 __be16 proto, u16 vid)
427 struct qeth_vlan_vid *id, *tmpid = NULL;
428 struct qeth_card *card = dev->ml_priv;
431 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
432 if (card->info.type == QETH_CARD_TYPE_OSM) {
433 QETH_CARD_TEXT(card, 3, "kidOSM");
436 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
437 QETH_CARD_TEXT(card, 3, "kidREC");
440 spin_lock_bh(&card->vlanlock);
441 list_for_each_entry(id, &card->vid_list, list) {
442 if (id->vid == vid) {
448 spin_unlock_bh(&card->vlanlock);
450 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
453 qeth_l2_set_rx_mode(card->dev);
457 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
459 QETH_DBF_TEXT(SETUP , 2, "stopcard");
460 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
462 qeth_set_allowed_threads(card, 0, 1);
463 if (card->read.state == CH_STATE_UP &&
464 card->write.state == CH_STATE_UP &&
465 (card->state == CARD_STATE_UP)) {
467 card->info.type != QETH_CARD_TYPE_OSN) {
468 qeth_l2_stop(card->dev);
471 dev_close(card->dev);
474 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
475 card->state = CARD_STATE_SOFTSETUP;
477 if (card->state == CARD_STATE_SOFTSETUP) {
478 qeth_l2_del_all_macs(card);
479 qeth_clear_ipacmd_list(card);
480 card->state = CARD_STATE_HARDSETUP;
482 if (card->state == CARD_STATE_HARDSETUP) {
483 qeth_qdio_clear_card(card, 0);
484 qeth_clear_qdio_buffers(card);
485 qeth_clear_working_pool_list(card);
486 card->state = CARD_STATE_DOWN;
488 if (card->state == CARD_STATE_DOWN) {
489 qeth_clear_cmd_buffers(&card->read);
490 qeth_clear_cmd_buffers(&card->write);
494 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
495 int budget, int *done)
499 struct qeth_hdr *hdr;
503 WARN_ON_ONCE(!budget);
505 skb = qeth_core_get_next_skb(card,
506 &card->qdio.in_q->bufs[card->rx.b_index],
507 &card->rx.b_element, &card->rx.e_offset, &hdr);
512 skb->dev = card->dev;
513 switch (hdr->hdr.l2.id) {
514 case QETH_HEADER_TYPE_LAYER2:
515 skb->pkt_type = PACKET_HOST;
516 skb->protocol = eth_type_trans(skb, skb->dev);
517 if ((card->dev->features & NETIF_F_RXCSUM)
518 && ((hdr->hdr.l2.flags[1] &
519 (QETH_HDR_EXT_CSUM_HDR_REQ |
520 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
521 (QETH_HDR_EXT_CSUM_HDR_REQ |
522 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
523 skb->ip_summed = CHECKSUM_UNNECESSARY;
525 skb->ip_summed = CHECKSUM_NONE;
526 if (skb->protocol == htons(ETH_P_802_2))
527 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
529 napi_gro_receive(&card->napi, skb);
531 case QETH_HEADER_TYPE_OSN:
532 if (card->info.type == QETH_CARD_TYPE_OSN) {
533 skb_push(skb, sizeof(struct qeth_hdr));
534 skb_copy_to_linear_data(skb, hdr,
535 sizeof(struct qeth_hdr));
537 card->osn_info.data_cb(skb);
542 dev_kfree_skb_any(skb);
543 QETH_CARD_TEXT(card, 3, "inbunkno");
544 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
549 card->stats.rx_packets++;
550 card->stats.rx_bytes += len;
555 static int qeth_l2_poll(struct napi_struct *napi, int budget)
557 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
559 struct qeth_qdio_buffer *buffer;
561 int new_budget = budget;
563 if (card->options.performance_stats) {
564 card->perf_stats.inbound_cnt++;
565 card->perf_stats.inbound_start_time = qeth_get_micros();
569 if (!card->rx.b_count) {
570 card->rx.qdio_err = 0;
571 card->rx.b_count = qdio_get_next_buffers(
572 card->data.ccwdev, 0, &card->rx.b_index,
574 if (card->rx.b_count <= 0) {
575 card->rx.b_count = 0;
579 &card->qdio.in_q->bufs[card->rx.b_index]
581 card->rx.e_offset = 0;
584 while (card->rx.b_count) {
585 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
586 if (!(card->rx.qdio_err &&
587 qeth_check_qdio_errors(card, buffer->buffer,
588 card->rx.qdio_err, "qinerr")))
589 work_done += qeth_l2_process_inbound_buffer(
590 card, new_budget, &done);
595 if (card->options.performance_stats)
596 card->perf_stats.bufs_rec++;
597 qeth_put_buffer_pool_entry(card,
599 qeth_queue_input_buffer(card, card->rx.b_index);
601 if (card->rx.b_count) {
603 (card->rx.b_index + 1) %
604 QDIO_MAX_BUFFERS_PER_Q;
607 ->bufs[card->rx.b_index]
609 card->rx.e_offset = 0;
613 if (work_done >= budget)
616 new_budget = budget - work_done;
621 if (qdio_start_irq(card->data.ccwdev, 0))
622 napi_schedule(&card->napi);
624 if (card->options.performance_stats)
625 card->perf_stats.inbound_time += qeth_get_micros() -
626 card->perf_stats.inbound_start_time;
630 static int qeth_l2_request_initial_mac(struct qeth_card *card)
633 char vendor_pre[] = {0x02, 0x00, 0x00};
635 QETH_DBF_TEXT(SETUP, 2, "doL2init");
636 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
638 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
639 rc = qeth_query_setadapterparms(card);
641 QETH_DBF_MESSAGE(2, "could not query adapter "
642 "parameters on device %s: x%x\n",
643 CARD_BUS_ID(card), rc);
647 if (card->info.type == QETH_CARD_TYPE_IQD ||
648 card->info.type == QETH_CARD_TYPE_OSM ||
649 card->info.type == QETH_CARD_TYPE_OSX ||
650 card->info.guestlan) {
651 rc = qeth_setadpparms_change_macaddr(card);
653 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
654 "device %s: x%x\n", CARD_BUS_ID(card), rc);
655 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
658 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
660 eth_random_addr(card->dev->dev_addr);
661 memcpy(card->dev->dev_addr, vendor_pre, 3);
666 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
668 struct sockaddr *addr = p;
669 struct qeth_card *card = dev->ml_priv;
672 QETH_CARD_TEXT(card, 3, "setmac");
674 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
675 QETH_CARD_TEXT(card, 3, "setmcINV");
679 if (card->info.type == QETH_CARD_TYPE_OSN ||
680 card->info.type == QETH_CARD_TYPE_OSM ||
681 card->info.type == QETH_CARD_TYPE_OSX) {
682 QETH_CARD_TEXT(card, 3, "setmcTYP");
685 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
686 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
687 QETH_CARD_TEXT(card, 3, "setmcREC");
690 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
691 if (!rc || (rc == -ENOENT))
692 rc = qeth_l2_send_setmac(card, addr->sa_data);
693 return rc ? -EINVAL : 0;
696 static void qeth_promisc_to_bridge(struct qeth_card *card)
698 struct net_device *dev = card->dev;
699 enum qeth_ipa_promisc_modes promisc_mode;
703 QETH_CARD_TEXT(card, 3, "pmisc2br");
705 if (!card->options.sbp.reflect_promisc)
707 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
708 : SET_PROMISC_MODE_OFF;
709 if (promisc_mode == card->info.promisc_mode)
712 if (promisc_mode == SET_PROMISC_MODE_ON) {
713 if (card->options.sbp.reflect_promisc_primary)
714 role = QETH_SBP_ROLE_PRIMARY;
716 role = QETH_SBP_ROLE_SECONDARY;
718 role = QETH_SBP_ROLE_NONE;
720 rc = qeth_bridgeport_setrole(card, role);
721 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
722 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
724 card->options.sbp.role = role;
725 card->info.promisc_mode = promisc_mode;
729 /* New MAC address is added to the hash table and marked to be written on card
730 * only if there is not in the hash table storage already
734 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
736 struct qeth_mac *mac;
738 hash_for_each_possible(card->mac_htable, mac, hnode,
739 qeth_l2_mac_hash(ha->addr)) {
740 if (is_uc == mac->is_uc &&
741 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
742 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
747 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
752 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
754 mac->disp_flag = QETH_DISP_ADDR_ADD;
756 hash_add(card->mac_htable, &mac->hnode,
757 qeth_l2_mac_hash(mac->mac_addr));
761 static void qeth_l2_set_rx_mode(struct net_device *dev)
763 struct qeth_card *card = dev->ml_priv;
764 struct netdev_hw_addr *ha;
765 struct qeth_mac *mac;
766 struct hlist_node *tmp;
770 if (card->info.type == QETH_CARD_TYPE_OSN)
773 QETH_CARD_TEXT(card, 3, "setmulti");
774 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
775 (card->state != CARD_STATE_UP))
778 spin_lock_bh(&card->mclock);
780 netdev_for_each_mc_addr(ha, dev)
781 qeth_l2_add_mac(card, ha, 0);
783 netdev_for_each_uc_addr(ha, dev)
784 qeth_l2_add_mac(card, ha, 1);
786 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
787 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
788 qeth_l2_remove_mac(card, mac);
789 hash_del(&mac->hnode);
792 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
793 rc = qeth_l2_write_mac(card, mac);
795 hash_del(&mac->hnode);
798 mac->disp_flag = QETH_DISP_ADDR_DELETE;
800 mac->disp_flag = QETH_DISP_ADDR_DELETE;
803 spin_unlock_bh(&card->mclock);
805 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
806 qeth_setadp_promisc_mode(card);
808 qeth_promisc_to_bridge(card);
811 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
814 struct qeth_hdr *hdr = NULL;
816 struct qeth_card *card = dev->ml_priv;
817 struct sk_buff *new_skb = skb;
818 int cast_type = qeth_l2_get_cast_type(card, skb);
819 struct qeth_qdio_out_q *queue;
820 int tx_bytes = skb->len;
821 int data_offset = -1;
822 int elements_needed = 0;
826 if (card->qdio.do_prio_queueing || (cast_type &&
827 card->info.is_multicast_different))
828 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
829 qeth_get_ip_version(skb), cast_type)];
831 queue = card->qdio.out_qs[card->qdio.default_out_queue];
833 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
834 card->stats.tx_carrier_errors++;
838 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
839 (skb->protocol == htons(ETH_P_IPV6)))
842 if (card->options.performance_stats) {
843 card->perf_stats.outbound_cnt++;
844 card->perf_stats.outbound_start_time = qeth_get_micros();
846 netif_stop_queue(dev);
848 /* fix hardware limitation: as long as we do not have sbal
849 * chaining we can not send long frag lists
851 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
852 !qeth_get_elements_no(card, new_skb, 0, 0)) {
853 int lin_rc = skb_linearize(new_skb);
855 if (card->options.performance_stats) {
857 card->perf_stats.tx_linfail++;
859 card->perf_stats.tx_lin++;
865 if (card->info.type == QETH_CARD_TYPE_OSN)
866 hdr = (struct qeth_hdr *)skb->data;
868 if (card->info.type == QETH_CARD_TYPE_IQD) {
870 data_offset = ETH_HLEN;
872 hdr = kmem_cache_alloc(qeth_core_header_cache,
877 skb_reset_mac_header(new_skb);
878 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
879 hdr->hdr.l2.pkt_length = new_skb->len;
880 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
881 skb_mac_header(new_skb), ETH_HLEN);
883 /* create a clone with writeable headroom */
884 new_skb = skb_realloc_headroom(skb,
885 sizeof(struct qeth_hdr));
888 hdr = (struct qeth_hdr *)skb_push(new_skb,
889 sizeof(struct qeth_hdr));
890 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
891 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
892 if (new_skb->ip_summed == CHECKSUM_PARTIAL)
893 qeth_l2_hdr_csum(card, hdr, new_skb);
897 elements = qeth_get_elements_no(card, new_skb, elements_needed,
898 (data_offset > 0) ? data_offset : 0);
900 if (data_offset >= 0)
901 kmem_cache_free(qeth_core_header_cache, hdr);
905 if (card->info.type != QETH_CARD_TYPE_IQD) {
906 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
907 sizeof(struct qeth_hdr_layer2)))
909 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
912 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
913 elements, data_offset, hd_len);
915 card->stats.tx_packets++;
916 card->stats.tx_bytes += tx_bytes;
917 if (card->options.performance_stats) {
918 nr_frags = skb_shinfo(new_skb)->nr_frags;
920 card->perf_stats.sg_skbs_sent++;
921 /* nr_frags + skb->data */
922 card->perf_stats.sg_frags_sent += nr_frags + 1;
926 dev_kfree_skb_any(skb);
929 if (data_offset >= 0)
930 kmem_cache_free(qeth_core_header_cache, hdr);
934 dev_kfree_skb_any(new_skb);
935 return NETDEV_TX_BUSY;
940 netif_wake_queue(dev);
941 if (card->options.performance_stats)
942 card->perf_stats.outbound_time += qeth_get_micros() -
943 card->perf_stats.outbound_start_time;
947 card->stats.tx_dropped++;
948 card->stats.tx_errors++;
949 if ((new_skb != skb) && new_skb)
950 dev_kfree_skb_any(new_skb);
951 dev_kfree_skb_any(skb);
952 netif_wake_queue(dev);
956 static int __qeth_l2_open(struct net_device *dev)
958 struct qeth_card *card = dev->ml_priv;
961 QETH_CARD_TEXT(card, 4, "qethopen");
962 if (card->state == CARD_STATE_UP)
964 if (card->state != CARD_STATE_SOFTSETUP)
967 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
968 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
969 QETH_CARD_TEXT(card, 4, "nomacadr");
972 card->data.state = CH_STATE_UP;
973 card->state = CARD_STATE_UP;
974 netif_start_queue(dev);
976 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
977 napi_enable(&card->napi);
978 napi_schedule(&card->napi);
984 static int qeth_l2_open(struct net_device *dev)
986 struct qeth_card *card = dev->ml_priv;
988 QETH_CARD_TEXT(card, 5, "qethope_");
989 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
990 QETH_CARD_TEXT(card, 3, "openREC");
993 return __qeth_l2_open(dev);
996 static int qeth_l2_stop(struct net_device *dev)
998 struct qeth_card *card = dev->ml_priv;
1000 QETH_CARD_TEXT(card, 4, "qethstop");
1001 netif_tx_disable(dev);
1002 if (card->state == CARD_STATE_UP) {
1003 card->state = CARD_STATE_SOFTSETUP;
1004 napi_disable(&card->napi);
1009 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
1011 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1013 qeth_l2_create_device_attributes(&gdev->dev);
1014 INIT_LIST_HEAD(&card->vid_list);
1015 hash_init(card->mac_htable);
1016 card->options.layer2 = 1;
1017 card->info.hwtrap = 0;
1021 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
1023 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1025 qeth_l2_remove_device_attributes(&cgdev->dev);
1026 qeth_set_allowed_threads(card, 0, 1);
1027 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1029 if (cgdev->state == CCWGROUP_ONLINE)
1030 qeth_l2_set_offline(cgdev);
1033 netif_napi_del(&card->napi);
1034 unregister_netdev(card->dev);
1040 static const struct ethtool_ops qeth_l2_ethtool_ops = {
1041 .get_link = ethtool_op_get_link,
1042 .get_strings = qeth_core_get_strings,
1043 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1044 .get_sset_count = qeth_core_get_sset_count,
1045 .get_drvinfo = qeth_core_get_drvinfo,
1046 .get_settings = qeth_core_ethtool_get_settings,
1049 static const struct ethtool_ops qeth_l2_osn_ops = {
1050 .get_strings = qeth_core_get_strings,
1051 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1052 .get_sset_count = qeth_core_get_sset_count,
1053 .get_drvinfo = qeth_core_get_drvinfo,
1056 static const struct net_device_ops qeth_l2_netdev_ops = {
1057 .ndo_open = qeth_l2_open,
1058 .ndo_stop = qeth_l2_stop,
1059 .ndo_get_stats = qeth_get_stats,
1060 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1061 .ndo_validate_addr = eth_validate_addr,
1062 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1063 .ndo_do_ioctl = qeth_l2_do_ioctl,
1064 .ndo_set_mac_address = qeth_l2_set_mac_address,
1065 .ndo_change_mtu = qeth_change_mtu,
1066 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1067 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1068 .ndo_tx_timeout = qeth_tx_timeout,
1069 .ndo_fix_features = qeth_fix_features,
1070 .ndo_set_features = qeth_set_features
1073 static int qeth_l2_setup_netdev(struct qeth_card *card)
1075 switch (card->info.type) {
1076 case QETH_CARD_TYPE_IQD:
1077 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1080 case QETH_CARD_TYPE_OSN:
1081 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1083 card->dev->flags |= IFF_NOARP;
1086 card->dev = alloc_etherdev(0);
1092 card->dev->ml_priv = card;
1093 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
1094 card->dev->mtu = card->info.initial_mtu;
1095 card->dev->min_mtu = 64;
1096 card->dev->max_mtu = ETH_MAX_MTU;
1097 card->dev->netdev_ops = &qeth_l2_netdev_ops;
1098 card->dev->ethtool_ops =
1099 (card->info.type != QETH_CARD_TYPE_OSN) ?
1100 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
1101 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1102 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1103 card->dev->hw_features = NETIF_F_SG;
1104 card->dev->vlan_features = NETIF_F_SG;
1105 /* OSA 3S and earlier has no RX/TX support */
1106 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1107 card->dev->hw_features |= NETIF_F_IP_CSUM;
1108 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1110 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1111 card->dev->hw_features |= NETIF_F_RXCSUM;
1112 card->dev->vlan_features |= NETIF_F_RXCSUM;
1115 card->info.broadcast_capable = 1;
1116 qeth_l2_request_initial_mac(card);
1117 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
1119 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1120 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1121 netif_carrier_off(card->dev);
1122 return register_netdev(card->dev);
1125 static int qeth_l2_start_ipassists(struct qeth_card *card)
1127 /* configure isolation level */
1128 if (qeth_set_access_ctrl_online(card, 0))
1133 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1135 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1137 enum qeth_card_states recover_flag;
1139 mutex_lock(&card->discipline_mutex);
1140 mutex_lock(&card->conf_mutex);
1141 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1142 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1144 recover_flag = card->state;
1145 rc = qeth_core_hardsetup_card(card);
1147 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1151 qeth_bridgeport_query_support(card);
1152 if (card->options.sbp.supported_funcs)
1153 dev_info(&card->gdev->dev,
1154 "The device represents a Bridge Capable Port\n");
1155 qeth_trace_features(card);
1157 if (!card->dev && qeth_l2_setup_netdev(card)) {
1162 if (card->info.type != QETH_CARD_TYPE_OSN)
1163 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1165 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1166 if (card->info.hwtrap &&
1167 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1168 card->info.hwtrap = 0;
1170 card->info.hwtrap = 0;
1172 qeth_l2_setup_bridgeport_attrs(card);
1174 card->state = CARD_STATE_HARDSETUP;
1175 memset(&card->rx, 0, sizeof(struct qeth_rx));
1176 qeth_print_status_message(card);
1179 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1181 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1182 (card->info.type == QETH_CARD_TYPE_OSX)) {
1183 rc = qeth_l2_start_ipassists(card);
1188 if (card->info.type != QETH_CARD_TYPE_OSN &&
1189 card->info.type != QETH_CARD_TYPE_OSM)
1190 qeth_l2_process_vlans(card);
1192 netif_tx_disable(card->dev);
1194 rc = qeth_init_qdio_queues(card);
1196 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1200 card->state = CARD_STATE_SOFTSETUP;
1201 if (card->lan_online)
1202 netif_carrier_on(card->dev);
1204 netif_carrier_off(card->dev);
1206 qeth_set_allowed_threads(card, 0xffffffff, 0);
1207 if (recover_flag == CARD_STATE_RECOVER) {
1208 if (recovery_mode &&
1209 card->info.type != QETH_CARD_TYPE_OSN) {
1210 __qeth_l2_open(card->dev);
1213 dev_open(card->dev);
1216 /* this also sets saved unicast addresses */
1217 qeth_l2_set_rx_mode(card->dev);
1219 qeth_recover_features(card->dev);
1222 /* let user_space know that device is online */
1223 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1224 mutex_unlock(&card->conf_mutex);
1225 mutex_unlock(&card->discipline_mutex);
1229 qeth_l2_stop_card(card, 0);
1230 ccw_device_set_offline(CARD_DDEV(card));
1231 ccw_device_set_offline(CARD_WDEV(card));
1232 ccw_device_set_offline(CARD_RDEV(card));
1233 qdio_free(CARD_DDEV(card));
1234 if (recover_flag == CARD_STATE_RECOVER)
1235 card->state = CARD_STATE_RECOVER;
1237 card->state = CARD_STATE_DOWN;
1238 mutex_unlock(&card->conf_mutex);
1239 mutex_unlock(&card->discipline_mutex);
1243 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1245 return __qeth_l2_set_online(gdev, 0);
1248 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1251 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1252 int rc = 0, rc2 = 0, rc3 = 0;
1253 enum qeth_card_states recover_flag;
1255 mutex_lock(&card->discipline_mutex);
1256 mutex_lock(&card->conf_mutex);
1257 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1258 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1260 if (card->dev && netif_carrier_ok(card->dev))
1261 netif_carrier_off(card->dev);
1262 recover_flag = card->state;
1263 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1264 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1265 card->info.hwtrap = 1;
1267 qeth_l2_stop_card(card, recovery_mode);
1268 rc = ccw_device_set_offline(CARD_DDEV(card));
1269 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1270 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1272 rc = (rc2) ? rc2 : rc3;
1274 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1275 qdio_free(CARD_DDEV(card));
1276 if (recover_flag == CARD_STATE_UP)
1277 card->state = CARD_STATE_RECOVER;
1278 /* let user_space know that device is offline */
1279 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1280 mutex_unlock(&card->conf_mutex);
1281 mutex_unlock(&card->discipline_mutex);
1285 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1287 return __qeth_l2_set_offline(cgdev, 0);
1290 static int qeth_l2_recover(void *ptr)
1292 struct qeth_card *card;
1295 card = (struct qeth_card *) ptr;
1296 QETH_CARD_TEXT(card, 2, "recover1");
1297 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1299 QETH_CARD_TEXT(card, 2, "recover2");
1300 dev_warn(&card->gdev->dev,
1301 "A recovery process has been started for the device\n");
1302 qeth_set_recovery_task(card);
1303 __qeth_l2_set_offline(card->gdev, 1);
1304 rc = __qeth_l2_set_online(card->gdev, 1);
1306 dev_info(&card->gdev->dev,
1307 "Device successfully recovered!\n");
1309 qeth_close_dev(card);
1310 dev_warn(&card->gdev->dev, "The qeth device driver "
1311 "failed to recover an error on the device\n");
1313 qeth_clear_recovery_task(card);
1314 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1315 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1319 static int __init qeth_l2_init(void)
1321 pr_info("register layer 2 discipline\n");
1325 static void __exit qeth_l2_exit(void)
1327 pr_info("unregister layer 2 discipline\n");
1330 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1332 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1333 qeth_set_allowed_threads(card, 0, 1);
1334 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1335 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1336 qeth_qdio_clear_card(card, 0);
1337 qeth_clear_qdio_buffers(card);
1338 qdio_free(CARD_DDEV(card));
1341 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1343 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1346 netif_device_detach(card->dev);
1347 qeth_set_allowed_threads(card, 0, 1);
1348 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1349 if (gdev->state == CCWGROUP_OFFLINE)
1351 if (card->state == CARD_STATE_UP) {
1352 if (card->info.hwtrap)
1353 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1354 __qeth_l2_set_offline(card->gdev, 1);
1356 __qeth_l2_set_offline(card->gdev, 0);
1360 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1362 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1365 if (gdev->state == CCWGROUP_OFFLINE)
1368 if (card->state == CARD_STATE_RECOVER) {
1369 rc = __qeth_l2_set_online(card->gdev, 1);
1372 dev_close(card->dev);
1376 rc = __qeth_l2_set_online(card->gdev, 0);
1378 qeth_set_allowed_threads(card, 0xffffffff, 0);
1380 netif_device_attach(card->dev);
1382 dev_warn(&card->gdev->dev, "The qeth device driver "
1383 "failed to recover an error on the device\n");
1387 /* Returns zero if the command is successfully "consumed" */
1388 static int qeth_l2_control_event(struct qeth_card *card,
1389 struct qeth_ipa_cmd *cmd)
1391 switch (cmd->hdr.command) {
1392 case IPA_CMD_SETBRIDGEPORT_OSA:
1393 case IPA_CMD_SETBRIDGEPORT_IQD:
1394 if (cmd->data.sbp.hdr.command_code ==
1395 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1396 qeth_bridge_state_change(card, cmd);
1400 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1401 qeth_bridge_host_event(card, cmd);
1408 struct qeth_discipline qeth_l2_discipline = {
1409 .start_poll = qeth_qdio_start_poll,
1410 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1411 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1412 .recover = qeth_l2_recover,
1413 .setup = qeth_l2_probe_device,
1414 .remove = qeth_l2_remove_device,
1415 .set_online = qeth_l2_set_online,
1416 .set_offline = qeth_l2_set_offline,
1417 .shutdown = qeth_l2_shutdown,
1418 .freeze = qeth_l2_pm_suspend,
1419 .thaw = qeth_l2_pm_resume,
1420 .restore = qeth_l2_pm_resume,
1421 .control_event_handler = qeth_l2_control_event,
1423 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1425 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1426 struct qeth_cmd_buffer *iob)
1428 unsigned long flags;
1431 QETH_CARD_TEXT(card, 5, "osndctrd");
1433 wait_event(card->wait_q,
1434 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1435 qeth_prepare_control_data(card, len, iob);
1436 QETH_CARD_TEXT(card, 6, "osnoirqp");
1437 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1438 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1439 (addr_t) iob, 0, 0);
1440 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1442 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1443 "ccw_device_start rc = %i\n", rc);
1444 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1445 qeth_release_buffer(iob->channel, iob);
1446 atomic_set(&card->write.irq_pending, 0);
1447 wake_up(&card->wait_q);
1452 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1453 struct qeth_cmd_buffer *iob, int data_len)
1457 QETH_CARD_TEXT(card, 4, "osndipa");
1459 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1460 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1462 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1463 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1464 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1465 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1466 return qeth_osn_send_control_data(card, s1, iob);
1469 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1471 struct qeth_cmd_buffer *iob;
1472 struct qeth_card *card;
1477 card = dev->ml_priv;
1480 QETH_CARD_TEXT(card, 2, "osnsdmc");
1481 if (!qeth_card_hw_is_reachable(card))
1483 iob = qeth_wait_for_buffer(&card->write);
1484 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1485 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1488 EXPORT_SYMBOL(qeth_osn_assist);
1490 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1491 int (*assist_cb)(struct net_device *, void *),
1492 int (*data_cb)(struct sk_buff *))
1494 struct qeth_card *card;
1496 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1499 card = (*dev)->ml_priv;
1502 QETH_CARD_TEXT(card, 2, "osnreg");
1503 if ((assist_cb == NULL) || (data_cb == NULL))
1505 card->osn_info.assist_cb = assist_cb;
1506 card->osn_info.data_cb = data_cb;
1509 EXPORT_SYMBOL(qeth_osn_register);
1511 void qeth_osn_deregister(struct net_device *dev)
1513 struct qeth_card *card;
1517 card = dev->ml_priv;
1520 QETH_CARD_TEXT(card, 2, "osndereg");
1521 card->osn_info.assist_cb = NULL;
1522 card->osn_info.data_cb = NULL;
1525 EXPORT_SYMBOL(qeth_osn_deregister);
1527 /* SETBRIDGEPORT support, async notifications */
1529 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1532 * qeth_bridge_emit_host_event() - bridgeport address change notification
1533 * @card: qeth_card structure pointer, for udev events.
1534 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1535 * and reset token and addr_lnid are unused and may be NULL.
1536 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1537 * object, 0 - addition of an object.
1538 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1539 * @token: "network token" structure identifying physical address of the port.
1540 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1542 * This function is called when registrations and deregistrations are
1543 * reported by the hardware, and also when notifications are enabled -
1544 * for all currently registered addresses.
1546 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1547 enum qeth_an_event_type evtype,
1548 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1555 case anev_reg_unreg:
1556 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1557 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1558 ? "deregister" : "register");
1559 env[i] = str[i]; i++;
1560 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1561 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1563 env[i] = str[i]; i++;
1565 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1566 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1568 env[i] = str[i]; i++;
1570 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1571 token->cssid, token->ssid, token->devnum);
1572 env[i] = str[i]; i++;
1573 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1574 env[i] = str[i]; i++;
1575 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1577 env[i] = str[i]; i++;
1578 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1579 env[i] = str[i]; i++;
1582 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1583 env[i] = str[i]; i++;
1586 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1587 env[i] = str[i]; i++;
1591 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1594 struct qeth_bridge_state_data {
1595 struct work_struct worker;
1596 struct qeth_card *card;
1597 struct qeth_sbp_state_change qports;
1600 static void qeth_bridge_state_change_worker(struct work_struct *work)
1602 struct qeth_bridge_state_data *data =
1603 container_of(work, struct qeth_bridge_state_data, worker);
1604 /* We are only interested in the first entry - local port */
1605 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1606 char env_locrem[32];
1616 /* Role should not change by itself, but if it did, */
1617 /* information from the hardware is authoritative. */
1618 mutex_lock(&data->card->conf_mutex);
1619 data->card->options.sbp.role = entry->role;
1620 mutex_unlock(&data->card->conf_mutex);
1622 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1623 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1624 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1625 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1626 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1628 snprintf(env_state, sizeof(env_state), "STATE=%s",
1629 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1630 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1631 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1633 kobject_uevent_env(&data->card->gdev->dev.kobj,
1638 static void qeth_bridge_state_change(struct qeth_card *card,
1639 struct qeth_ipa_cmd *cmd)
1641 struct qeth_sbp_state_change *qports =
1642 &cmd->data.sbp.data.state_change;
1643 struct qeth_bridge_state_data *data;
1646 QETH_CARD_TEXT(card, 2, "brstchng");
1647 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1648 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1651 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1652 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1655 QETH_CARD_TEXT(card, 2, "BPSalloc");
1658 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1660 memcpy(&data->qports, qports,
1661 sizeof(struct qeth_sbp_state_change) + extrasize);
1662 queue_work(qeth_wq, &data->worker);
1665 struct qeth_bridge_host_data {
1666 struct work_struct worker;
1667 struct qeth_card *card;
1668 struct qeth_ipacmd_addr_change hostevs;
1671 static void qeth_bridge_host_event_worker(struct work_struct *work)
1673 struct qeth_bridge_host_data *data =
1674 container_of(work, struct qeth_bridge_host_data, worker);
1677 if (data->hostevs.lost_event_mask) {
1678 dev_info(&data->card->gdev->dev,
1679 "Address notification from the Bridge Port stopped %s (%s)\n",
1680 data->card->dev->name,
1681 (data->hostevs.lost_event_mask == 0x01)
1683 : (data->hostevs.lost_event_mask == 0x02)
1684 ? "Bridge port state change"
1685 : "Unknown reason");
1686 mutex_lock(&data->card->conf_mutex);
1687 data->card->options.sbp.hostnotification = 0;
1688 mutex_unlock(&data->card->conf_mutex);
1689 qeth_bridge_emit_host_event(data->card, anev_abort,
1692 for (i = 0; i < data->hostevs.num_entries; i++) {
1693 struct qeth_ipacmd_addr_change_entry *entry =
1694 &data->hostevs.entry[i];
1695 qeth_bridge_emit_host_event(data->card,
1698 &entry->token, &entry->addr_lnid);
1703 static void qeth_bridge_host_event(struct qeth_card *card,
1704 struct qeth_ipa_cmd *cmd)
1706 struct qeth_ipacmd_addr_change *hostevs =
1707 &cmd->data.addrchange;
1708 struct qeth_bridge_host_data *data;
1711 QETH_CARD_TEXT(card, 2, "brhostev");
1712 if (cmd->hdr.return_code != 0x0000) {
1713 if (cmd->hdr.return_code == 0x0010) {
1714 if (hostevs->lost_event_mask == 0x00)
1715 hostevs->lost_event_mask = 0xff;
1717 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1718 cmd->hdr.return_code);
1722 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1723 hostevs->num_entries;
1724 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1727 QETH_CARD_TEXT(card, 2, "BPHalloc");
1730 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1732 memcpy(&data->hostevs, hostevs,
1733 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1734 queue_work(qeth_wq, &data->worker);
1737 /* SETBRIDGEPORT support; sending commands */
1739 struct _qeth_sbp_cbctl {
1745 enum qeth_sbp_roles *role;
1746 enum qeth_sbp_states *state;
1752 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1753 * @card: qeth_card structure pointer, for debug messages.
1754 * @cbctl: state structure with hardware return codes.
1755 * @setcmd: IPA command code
1757 * Returns negative errno-compatible error indication or 0 on success.
1759 static int qeth_bridgeport_makerc(struct qeth_card *card,
1760 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1763 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1765 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1766 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1767 switch (cbctl->cmd_rc) {
1776 case 0x000C: /* Not configured as bridge Port */
1777 rc = -ENODEV; /* maybe not the best code here? */
1778 dev_err(&card->gdev->dev,
1779 "The device is not configured as a Bridge Port\n");
1782 case 0x0010: /* OS mismatch */
1784 dev_err(&card->gdev->dev,
1785 "A Bridge Port is already configured by a different operating system\n");
1788 case 0x0014: /* Another device is Primary */
1790 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1792 dev_err(&card->gdev->dev,
1793 "The LAN already has a primary Bridge Port\n");
1795 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1797 dev_err(&card->gdev->dev,
1798 "The device is already a primary Bridge Port\n");
1805 case 0x0018: /* This device is currently Secondary */
1807 dev_err(&card->gdev->dev,
1808 "The device is already a secondary Bridge Port\n");
1811 case 0x001C: /* Limit for Secondary devices reached */
1813 dev_err(&card->gdev->dev,
1814 "The LAN cannot have more secondary Bridge Ports\n");
1817 case 0x0024: /* This device is currently Primary */
1819 dev_err(&card->gdev->dev,
1820 "The device is already a primary Bridge Port\n");
1823 case 0x0020: /* Not authorized by zManager */
1825 dev_err(&card->gdev->dev,
1826 "The device is not authorized to be a Bridge Port\n");
1832 switch (cbctl->ipa_rc) {
1833 case IPA_RC_NOTSUPP:
1836 case IPA_RC_UNSUPPORTED_COMMAND:
1844 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1845 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1850 static inline int ipa_cmd_sbp(struct qeth_card *card)
1852 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1853 IPA_CMD_SETBRIDGEPORT_IQD :
1854 IPA_CMD_SETBRIDGEPORT_OSA;
1857 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1858 struct qeth_reply *reply, unsigned long data)
1860 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1861 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1862 QETH_CARD_TEXT(card, 2, "brqsupcb");
1863 cbctl->ipa_rc = cmd->hdr.return_code;
1864 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1865 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1866 cbctl->data.supported =
1867 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1869 cbctl->data.supported = 0;
1875 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1876 * @card: qeth_card structure pointer.
1878 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1879 * strucutre: card->options.sbp.supported_funcs.
1881 static void qeth_bridgeport_query_support(struct qeth_card *card)
1883 struct qeth_cmd_buffer *iob;
1884 struct qeth_ipa_cmd *cmd;
1885 struct _qeth_sbp_cbctl cbctl;
1887 QETH_CARD_TEXT(card, 2, "brqsuppo");
1888 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1891 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1892 cmd->data.sbp.hdr.cmdlength =
1893 sizeof(struct qeth_ipacmd_sbp_hdr) +
1894 sizeof(struct qeth_sbp_query_cmds_supp);
1895 cmd->data.sbp.hdr.command_code =
1896 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1897 cmd->data.sbp.hdr.used_total = 1;
1898 cmd->data.sbp.hdr.seq_no = 1;
1899 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1901 qeth_bridgeport_makerc(card, &cbctl,
1902 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1903 /* non-zero makerc signifies failure, and produce messages */
1904 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1907 card->options.sbp.supported_funcs = cbctl.data.supported;
1910 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1911 struct qeth_reply *reply, unsigned long data)
1913 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1914 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1915 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1917 QETH_CARD_TEXT(card, 2, "brqprtcb");
1918 cbctl->ipa_rc = cmd->hdr.return_code;
1919 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1920 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1922 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1923 cbctl->cmd_rc = 0xffff;
1924 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1927 /* first entry contains the state of the local port */
1928 if (qports->num_entries > 0) {
1929 if (cbctl->data.qports.role)
1930 *cbctl->data.qports.role = qports->entry[0].role;
1931 if (cbctl->data.qports.state)
1932 *cbctl->data.qports.state = qports->entry[0].state;
1938 * qeth_bridgeport_query_ports() - query local bridgeport status.
1939 * @card: qeth_card structure pointer.
1940 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1941 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1943 * Returns negative errno-compatible error indication or 0 on success.
1945 * 'role' and 'state' are not updated in case of hardware operation failure.
1947 int qeth_bridgeport_query_ports(struct qeth_card *card,
1948 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1951 struct qeth_cmd_buffer *iob;
1952 struct qeth_ipa_cmd *cmd;
1953 struct _qeth_sbp_cbctl cbctl = {
1962 QETH_CARD_TEXT(card, 2, "brqports");
1963 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1965 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1968 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1969 cmd->data.sbp.hdr.cmdlength =
1970 sizeof(struct qeth_ipacmd_sbp_hdr);
1971 cmd->data.sbp.hdr.command_code =
1972 IPA_SBP_QUERY_BRIDGE_PORTS;
1973 cmd->data.sbp.hdr.used_total = 1;
1974 cmd->data.sbp.hdr.seq_no = 1;
1975 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1979 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1981 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1983 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1984 struct qeth_reply *reply, unsigned long data)
1986 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1987 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1988 QETH_CARD_TEXT(card, 2, "brsetrcb");
1989 cbctl->ipa_rc = cmd->hdr.return_code;
1990 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1995 * qeth_bridgeport_setrole() - Assign primary role to the port.
1996 * @card: qeth_card structure pointer.
1997 * @role: Role to assign.
1999 * Returns negative errno-compatible error indication or 0 on success.
2001 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
2005 struct qeth_cmd_buffer *iob;
2006 struct qeth_ipa_cmd *cmd;
2007 struct _qeth_sbp_cbctl cbctl;
2008 enum qeth_ipa_sbp_cmd setcmd;
2010 QETH_CARD_TEXT(card, 2, "brsetrol");
2012 case QETH_SBP_ROLE_NONE:
2013 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
2014 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2015 sizeof(struct qeth_sbp_reset_role);
2017 case QETH_SBP_ROLE_PRIMARY:
2018 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
2019 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2020 sizeof(struct qeth_sbp_set_primary);
2022 case QETH_SBP_ROLE_SECONDARY:
2023 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
2024 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2025 sizeof(struct qeth_sbp_set_secondary);
2030 if (!(card->options.sbp.supported_funcs & setcmd))
2032 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
2035 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2036 cmd->data.sbp.hdr.cmdlength = cmdlength;
2037 cmd->data.sbp.hdr.command_code = setcmd;
2038 cmd->data.sbp.hdr.used_total = 1;
2039 cmd->data.sbp.hdr.seq_no = 1;
2040 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
2044 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
2048 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
2049 * @card: qeth_card structure pointer, for debug messages.
2051 * Returns negative errno-compatible error indication or 0 on success.
2053 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2066 dev_err(&card->gdev->dev,
2067 "Setting address notification failed\n");
2079 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2080 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2085 static void qeth_bridgeport_an_set_cb(void *priv,
2086 enum qdio_brinfo_entry_type type, void *entry)
2088 struct qeth_card *card = (struct qeth_card *)priv;
2089 struct qdio_brinfo_entry_l2 *l2entry;
2092 if (type != l2_addr_lnid) {
2097 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2098 code = IPA_ADDR_CHANGE_CODE_MACADDR;
2099 if (l2entry->addr_lnid.lnid)
2100 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2101 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2102 (struct net_if_token *)&l2entry->nit,
2103 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2107 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2108 * @card: qeth_card structure pointer.
2109 * @enable: 0 - disable, non-zero - enable notifications
2111 * Returns negative errno-compatible error indication or 0 on success.
2113 * On enable, emits a series of address notifications udev events for all
2114 * currently registered hosts.
2116 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2120 struct ccw_device *ddev;
2121 struct subchannel_id schid;
2125 if (!card->options.sbp.supported_funcs)
2127 ddev = CARD_DDEV(card);
2128 ccw_device_get_schid(ddev, &schid);
2131 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2132 rc = qdio_pnso_brinfo(schid, 1, &response,
2133 qeth_bridgeport_an_set_cb, card);
2135 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2136 return qeth_anset_makerc(card, rc, response);
2138 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2140 module_init(qeth_l2_init);
2141 module_exit(qeth_l2_exit);
2142 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2143 MODULE_DESCRIPTION("qeth layer 2 discipline");
2144 MODULE_LICENSE("GPL");