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)) {
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);
899 if (data_offset >= 0)
900 kmem_cache_free(qeth_core_header_cache, hdr);
904 if (card->info.type != QETH_CARD_TYPE_IQD) {
905 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
906 sizeof(struct qeth_hdr_layer2)))
908 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
911 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
912 elements, data_offset, hd_len);
914 card->stats.tx_packets++;
915 card->stats.tx_bytes += tx_bytes;
916 if (card->options.performance_stats) {
917 nr_frags = skb_shinfo(new_skb)->nr_frags;
919 card->perf_stats.sg_skbs_sent++;
920 /* nr_frags + skb->data */
921 card->perf_stats.sg_frags_sent += nr_frags + 1;
925 dev_kfree_skb_any(skb);
928 if (data_offset >= 0)
929 kmem_cache_free(qeth_core_header_cache, hdr);
933 dev_kfree_skb_any(new_skb);
934 return NETDEV_TX_BUSY;
939 netif_wake_queue(dev);
940 if (card->options.performance_stats)
941 card->perf_stats.outbound_time += qeth_get_micros() -
942 card->perf_stats.outbound_start_time;
946 card->stats.tx_dropped++;
947 card->stats.tx_errors++;
948 if ((new_skb != skb) && new_skb)
949 dev_kfree_skb_any(new_skb);
950 dev_kfree_skb_any(skb);
951 netif_wake_queue(dev);
955 static int __qeth_l2_open(struct net_device *dev)
957 struct qeth_card *card = dev->ml_priv;
960 QETH_CARD_TEXT(card, 4, "qethopen");
961 if (card->state == CARD_STATE_UP)
963 if (card->state != CARD_STATE_SOFTSETUP)
966 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
967 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
968 QETH_CARD_TEXT(card, 4, "nomacadr");
971 card->data.state = CH_STATE_UP;
972 card->state = CARD_STATE_UP;
973 netif_start_queue(dev);
975 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
976 napi_enable(&card->napi);
977 napi_schedule(&card->napi);
983 static int qeth_l2_open(struct net_device *dev)
985 struct qeth_card *card = dev->ml_priv;
987 QETH_CARD_TEXT(card, 5, "qethope_");
988 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
989 QETH_CARD_TEXT(card, 3, "openREC");
992 return __qeth_l2_open(dev);
995 static int qeth_l2_stop(struct net_device *dev)
997 struct qeth_card *card = dev->ml_priv;
999 QETH_CARD_TEXT(card, 4, "qethstop");
1000 netif_tx_disable(dev);
1001 if (card->state == CARD_STATE_UP) {
1002 card->state = CARD_STATE_SOFTSETUP;
1003 napi_disable(&card->napi);
1008 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
1010 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1012 qeth_l2_create_device_attributes(&gdev->dev);
1013 INIT_LIST_HEAD(&card->vid_list);
1014 hash_init(card->mac_htable);
1015 card->options.layer2 = 1;
1016 card->info.hwtrap = 0;
1020 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
1022 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1024 qeth_l2_remove_device_attributes(&cgdev->dev);
1025 qeth_set_allowed_threads(card, 0, 1);
1026 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1028 if (cgdev->state == CCWGROUP_ONLINE)
1029 qeth_l2_set_offline(cgdev);
1032 netif_napi_del(&card->napi);
1033 unregister_netdev(card->dev);
1039 static const struct ethtool_ops qeth_l2_ethtool_ops = {
1040 .get_link = ethtool_op_get_link,
1041 .get_strings = qeth_core_get_strings,
1042 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1043 .get_sset_count = qeth_core_get_sset_count,
1044 .get_drvinfo = qeth_core_get_drvinfo,
1045 .get_settings = qeth_core_ethtool_get_settings,
1048 static const struct ethtool_ops qeth_l2_osn_ops = {
1049 .get_strings = qeth_core_get_strings,
1050 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1051 .get_sset_count = qeth_core_get_sset_count,
1052 .get_drvinfo = qeth_core_get_drvinfo,
1055 static const struct net_device_ops qeth_l2_netdev_ops = {
1056 .ndo_open = qeth_l2_open,
1057 .ndo_stop = qeth_l2_stop,
1058 .ndo_get_stats = qeth_get_stats,
1059 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1060 .ndo_validate_addr = eth_validate_addr,
1061 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1062 .ndo_do_ioctl = qeth_l2_do_ioctl,
1063 .ndo_set_mac_address = qeth_l2_set_mac_address,
1064 .ndo_change_mtu = qeth_change_mtu,
1065 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1066 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1067 .ndo_tx_timeout = qeth_tx_timeout,
1068 .ndo_fix_features = qeth_fix_features,
1069 .ndo_set_features = qeth_set_features
1072 static int qeth_l2_setup_netdev(struct qeth_card *card)
1074 switch (card->info.type) {
1075 case QETH_CARD_TYPE_IQD:
1076 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1079 case QETH_CARD_TYPE_OSN:
1080 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1082 card->dev->flags |= IFF_NOARP;
1085 card->dev = alloc_etherdev(0);
1091 card->dev->ml_priv = card;
1092 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
1093 card->dev->mtu = card->info.initial_mtu;
1094 card->dev->min_mtu = 64;
1095 card->dev->max_mtu = ETH_MAX_MTU;
1096 card->dev->netdev_ops = &qeth_l2_netdev_ops;
1097 card->dev->ethtool_ops =
1098 (card->info.type != QETH_CARD_TYPE_OSN) ?
1099 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
1100 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1101 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1102 card->dev->hw_features = NETIF_F_SG;
1103 card->dev->vlan_features = NETIF_F_SG;
1104 /* OSA 3S and earlier has no RX/TX support */
1105 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1106 card->dev->hw_features |= NETIF_F_IP_CSUM;
1107 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1109 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1110 card->dev->hw_features |= NETIF_F_RXCSUM;
1111 card->dev->vlan_features |= NETIF_F_RXCSUM;
1114 card->info.broadcast_capable = 1;
1115 qeth_l2_request_initial_mac(card);
1116 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
1118 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1119 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1120 netif_carrier_off(card->dev);
1121 return register_netdev(card->dev);
1124 static int qeth_l2_start_ipassists(struct qeth_card *card)
1126 /* configure isolation level */
1127 if (qeth_set_access_ctrl_online(card, 0))
1132 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1134 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1136 enum qeth_card_states recover_flag;
1138 mutex_lock(&card->discipline_mutex);
1139 mutex_lock(&card->conf_mutex);
1140 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1141 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1143 recover_flag = card->state;
1144 rc = qeth_core_hardsetup_card(card);
1146 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1150 qeth_bridgeport_query_support(card);
1151 if (card->options.sbp.supported_funcs)
1152 dev_info(&card->gdev->dev,
1153 "The device represents a Bridge Capable Port\n");
1154 qeth_trace_features(card);
1156 if (!card->dev && qeth_l2_setup_netdev(card)) {
1161 if (card->info.type != QETH_CARD_TYPE_OSN)
1162 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1164 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1165 if (card->info.hwtrap &&
1166 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1167 card->info.hwtrap = 0;
1169 card->info.hwtrap = 0;
1171 qeth_l2_setup_bridgeport_attrs(card);
1173 card->state = CARD_STATE_HARDSETUP;
1174 memset(&card->rx, 0, sizeof(struct qeth_rx));
1175 qeth_print_status_message(card);
1178 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1180 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1181 (card->info.type == QETH_CARD_TYPE_OSX)) {
1182 rc = qeth_l2_start_ipassists(card);
1187 if (card->info.type != QETH_CARD_TYPE_OSN &&
1188 card->info.type != QETH_CARD_TYPE_OSM)
1189 qeth_l2_process_vlans(card);
1191 netif_tx_disable(card->dev);
1193 rc = qeth_init_qdio_queues(card);
1195 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1199 card->state = CARD_STATE_SOFTSETUP;
1200 if (card->lan_online)
1201 netif_carrier_on(card->dev);
1203 netif_carrier_off(card->dev);
1205 qeth_set_allowed_threads(card, 0xffffffff, 0);
1206 if (recover_flag == CARD_STATE_RECOVER) {
1207 if (recovery_mode &&
1208 card->info.type != QETH_CARD_TYPE_OSN) {
1209 __qeth_l2_open(card->dev);
1212 dev_open(card->dev);
1215 /* this also sets saved unicast addresses */
1216 qeth_l2_set_rx_mode(card->dev);
1218 qeth_recover_features(card->dev);
1221 /* let user_space know that device is online */
1222 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1223 mutex_unlock(&card->conf_mutex);
1224 mutex_unlock(&card->discipline_mutex);
1228 qeth_l2_stop_card(card, 0);
1229 ccw_device_set_offline(CARD_DDEV(card));
1230 ccw_device_set_offline(CARD_WDEV(card));
1231 ccw_device_set_offline(CARD_RDEV(card));
1232 qdio_free(CARD_DDEV(card));
1233 if (recover_flag == CARD_STATE_RECOVER)
1234 card->state = CARD_STATE_RECOVER;
1236 card->state = CARD_STATE_DOWN;
1237 mutex_unlock(&card->conf_mutex);
1238 mutex_unlock(&card->discipline_mutex);
1242 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1244 return __qeth_l2_set_online(gdev, 0);
1247 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1250 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1251 int rc = 0, rc2 = 0, rc3 = 0;
1252 enum qeth_card_states recover_flag;
1254 mutex_lock(&card->discipline_mutex);
1255 mutex_lock(&card->conf_mutex);
1256 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1257 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1259 if (card->dev && netif_carrier_ok(card->dev))
1260 netif_carrier_off(card->dev);
1261 recover_flag = card->state;
1262 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1263 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1264 card->info.hwtrap = 1;
1266 qeth_l2_stop_card(card, recovery_mode);
1267 rc = ccw_device_set_offline(CARD_DDEV(card));
1268 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1269 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1271 rc = (rc2) ? rc2 : rc3;
1273 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1274 qdio_free(CARD_DDEV(card));
1275 if (recover_flag == CARD_STATE_UP)
1276 card->state = CARD_STATE_RECOVER;
1277 /* let user_space know that device is offline */
1278 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1279 mutex_unlock(&card->conf_mutex);
1280 mutex_unlock(&card->discipline_mutex);
1284 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1286 return __qeth_l2_set_offline(cgdev, 0);
1289 static int qeth_l2_recover(void *ptr)
1291 struct qeth_card *card;
1294 card = (struct qeth_card *) ptr;
1295 QETH_CARD_TEXT(card, 2, "recover1");
1296 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1298 QETH_CARD_TEXT(card, 2, "recover2");
1299 dev_warn(&card->gdev->dev,
1300 "A recovery process has been started for the device\n");
1301 qeth_set_recovery_task(card);
1302 __qeth_l2_set_offline(card->gdev, 1);
1303 rc = __qeth_l2_set_online(card->gdev, 1);
1305 dev_info(&card->gdev->dev,
1306 "Device successfully recovered!\n");
1308 qeth_close_dev(card);
1309 dev_warn(&card->gdev->dev, "The qeth device driver "
1310 "failed to recover an error on the device\n");
1312 qeth_clear_recovery_task(card);
1313 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1314 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1318 static int __init qeth_l2_init(void)
1320 pr_info("register layer 2 discipline\n");
1324 static void __exit qeth_l2_exit(void)
1326 pr_info("unregister layer 2 discipline\n");
1329 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1331 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1332 qeth_set_allowed_threads(card, 0, 1);
1333 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1334 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1335 qeth_qdio_clear_card(card, 0);
1336 qeth_clear_qdio_buffers(card);
1337 qdio_free(CARD_DDEV(card));
1340 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1342 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1345 netif_device_detach(card->dev);
1346 qeth_set_allowed_threads(card, 0, 1);
1347 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1348 if (gdev->state == CCWGROUP_OFFLINE)
1350 if (card->state == CARD_STATE_UP) {
1351 if (card->info.hwtrap)
1352 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1353 __qeth_l2_set_offline(card->gdev, 1);
1355 __qeth_l2_set_offline(card->gdev, 0);
1359 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1361 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1364 if (gdev->state == CCWGROUP_OFFLINE)
1367 if (card->state == CARD_STATE_RECOVER) {
1368 rc = __qeth_l2_set_online(card->gdev, 1);
1371 dev_close(card->dev);
1375 rc = __qeth_l2_set_online(card->gdev, 0);
1377 qeth_set_allowed_threads(card, 0xffffffff, 0);
1379 netif_device_attach(card->dev);
1381 dev_warn(&card->gdev->dev, "The qeth device driver "
1382 "failed to recover an error on the device\n");
1386 /* Returns zero if the command is successfully "consumed" */
1387 static int qeth_l2_control_event(struct qeth_card *card,
1388 struct qeth_ipa_cmd *cmd)
1390 switch (cmd->hdr.command) {
1391 case IPA_CMD_SETBRIDGEPORT_OSA:
1392 case IPA_CMD_SETBRIDGEPORT_IQD:
1393 if (cmd->data.sbp.hdr.command_code ==
1394 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1395 qeth_bridge_state_change(card, cmd);
1399 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1400 qeth_bridge_host_event(card, cmd);
1407 struct qeth_discipline qeth_l2_discipline = {
1408 .start_poll = qeth_qdio_start_poll,
1409 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1410 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1411 .recover = qeth_l2_recover,
1412 .setup = qeth_l2_probe_device,
1413 .remove = qeth_l2_remove_device,
1414 .set_online = qeth_l2_set_online,
1415 .set_offline = qeth_l2_set_offline,
1416 .shutdown = qeth_l2_shutdown,
1417 .freeze = qeth_l2_pm_suspend,
1418 .thaw = qeth_l2_pm_resume,
1419 .restore = qeth_l2_pm_resume,
1420 .control_event_handler = qeth_l2_control_event,
1422 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1424 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1425 struct qeth_cmd_buffer *iob)
1427 unsigned long flags;
1430 QETH_CARD_TEXT(card, 5, "osndctrd");
1432 wait_event(card->wait_q,
1433 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1434 qeth_prepare_control_data(card, len, iob);
1435 QETH_CARD_TEXT(card, 6, "osnoirqp");
1436 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1437 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1438 (addr_t) iob, 0, 0);
1439 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1441 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1442 "ccw_device_start rc = %i\n", rc);
1443 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1444 qeth_release_buffer(iob->channel, iob);
1445 atomic_set(&card->write.irq_pending, 0);
1446 wake_up(&card->wait_q);
1451 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1452 struct qeth_cmd_buffer *iob, int data_len)
1456 QETH_CARD_TEXT(card, 4, "osndipa");
1458 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1459 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1461 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1462 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1463 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1464 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1465 return qeth_osn_send_control_data(card, s1, iob);
1468 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1470 struct qeth_cmd_buffer *iob;
1471 struct qeth_card *card;
1476 card = dev->ml_priv;
1479 QETH_CARD_TEXT(card, 2, "osnsdmc");
1480 if (!qeth_card_hw_is_reachable(card))
1482 iob = qeth_wait_for_buffer(&card->write);
1483 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1484 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1487 EXPORT_SYMBOL(qeth_osn_assist);
1489 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1490 int (*assist_cb)(struct net_device *, void *),
1491 int (*data_cb)(struct sk_buff *))
1493 struct qeth_card *card;
1495 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1498 card = (*dev)->ml_priv;
1501 QETH_CARD_TEXT(card, 2, "osnreg");
1502 if ((assist_cb == NULL) || (data_cb == NULL))
1504 card->osn_info.assist_cb = assist_cb;
1505 card->osn_info.data_cb = data_cb;
1508 EXPORT_SYMBOL(qeth_osn_register);
1510 void qeth_osn_deregister(struct net_device *dev)
1512 struct qeth_card *card;
1516 card = dev->ml_priv;
1519 QETH_CARD_TEXT(card, 2, "osndereg");
1520 card->osn_info.assist_cb = NULL;
1521 card->osn_info.data_cb = NULL;
1524 EXPORT_SYMBOL(qeth_osn_deregister);
1526 /* SETBRIDGEPORT support, async notifications */
1528 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1531 * qeth_bridge_emit_host_event() - bridgeport address change notification
1532 * @card: qeth_card structure pointer, for udev events.
1533 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1534 * and reset token and addr_lnid are unused and may be NULL.
1535 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1536 * object, 0 - addition of an object.
1537 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1538 * @token: "network token" structure identifying physical address of the port.
1539 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1541 * This function is called when registrations and deregistrations are
1542 * reported by the hardware, and also when notifications are enabled -
1543 * for all currently registered addresses.
1545 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1546 enum qeth_an_event_type evtype,
1547 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1554 case anev_reg_unreg:
1555 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1556 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1557 ? "deregister" : "register");
1558 env[i] = str[i]; i++;
1559 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1560 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1562 env[i] = str[i]; i++;
1564 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1565 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1567 env[i] = str[i]; i++;
1569 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1570 token->cssid, token->ssid, token->devnum);
1571 env[i] = str[i]; i++;
1572 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1573 env[i] = str[i]; i++;
1574 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1576 env[i] = str[i]; i++;
1577 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1578 env[i] = str[i]; i++;
1581 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1582 env[i] = str[i]; i++;
1585 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1586 env[i] = str[i]; i++;
1590 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1593 struct qeth_bridge_state_data {
1594 struct work_struct worker;
1595 struct qeth_card *card;
1596 struct qeth_sbp_state_change qports;
1599 static void qeth_bridge_state_change_worker(struct work_struct *work)
1601 struct qeth_bridge_state_data *data =
1602 container_of(work, struct qeth_bridge_state_data, worker);
1603 /* We are only interested in the first entry - local port */
1604 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1605 char env_locrem[32];
1615 /* Role should not change by itself, but if it did, */
1616 /* information from the hardware is authoritative. */
1617 mutex_lock(&data->card->conf_mutex);
1618 data->card->options.sbp.role = entry->role;
1619 mutex_unlock(&data->card->conf_mutex);
1621 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1622 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1623 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1624 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1625 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1627 snprintf(env_state, sizeof(env_state), "STATE=%s",
1628 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1629 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1630 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1632 kobject_uevent_env(&data->card->gdev->dev.kobj,
1637 static void qeth_bridge_state_change(struct qeth_card *card,
1638 struct qeth_ipa_cmd *cmd)
1640 struct qeth_sbp_state_change *qports =
1641 &cmd->data.sbp.data.state_change;
1642 struct qeth_bridge_state_data *data;
1645 QETH_CARD_TEXT(card, 2, "brstchng");
1646 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1647 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1650 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1651 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1654 QETH_CARD_TEXT(card, 2, "BPSalloc");
1657 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1659 memcpy(&data->qports, qports,
1660 sizeof(struct qeth_sbp_state_change) + extrasize);
1661 queue_work(qeth_wq, &data->worker);
1664 struct qeth_bridge_host_data {
1665 struct work_struct worker;
1666 struct qeth_card *card;
1667 struct qeth_ipacmd_addr_change hostevs;
1670 static void qeth_bridge_host_event_worker(struct work_struct *work)
1672 struct qeth_bridge_host_data *data =
1673 container_of(work, struct qeth_bridge_host_data, worker);
1676 if (data->hostevs.lost_event_mask) {
1677 dev_info(&data->card->gdev->dev,
1678 "Address notification from the Bridge Port stopped %s (%s)\n",
1679 data->card->dev->name,
1680 (data->hostevs.lost_event_mask == 0x01)
1682 : (data->hostevs.lost_event_mask == 0x02)
1683 ? "Bridge port state change"
1684 : "Unknown reason");
1685 mutex_lock(&data->card->conf_mutex);
1686 data->card->options.sbp.hostnotification = 0;
1687 mutex_unlock(&data->card->conf_mutex);
1688 qeth_bridge_emit_host_event(data->card, anev_abort,
1691 for (i = 0; i < data->hostevs.num_entries; i++) {
1692 struct qeth_ipacmd_addr_change_entry *entry =
1693 &data->hostevs.entry[i];
1694 qeth_bridge_emit_host_event(data->card,
1697 &entry->token, &entry->addr_lnid);
1702 static void qeth_bridge_host_event(struct qeth_card *card,
1703 struct qeth_ipa_cmd *cmd)
1705 struct qeth_ipacmd_addr_change *hostevs =
1706 &cmd->data.addrchange;
1707 struct qeth_bridge_host_data *data;
1710 QETH_CARD_TEXT(card, 2, "brhostev");
1711 if (cmd->hdr.return_code != 0x0000) {
1712 if (cmd->hdr.return_code == 0x0010) {
1713 if (hostevs->lost_event_mask == 0x00)
1714 hostevs->lost_event_mask = 0xff;
1716 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1717 cmd->hdr.return_code);
1721 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1722 hostevs->num_entries;
1723 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1726 QETH_CARD_TEXT(card, 2, "BPHalloc");
1729 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1731 memcpy(&data->hostevs, hostevs,
1732 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1733 queue_work(qeth_wq, &data->worker);
1736 /* SETBRIDGEPORT support; sending commands */
1738 struct _qeth_sbp_cbctl {
1744 enum qeth_sbp_roles *role;
1745 enum qeth_sbp_states *state;
1751 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1752 * @card: qeth_card structure pointer, for debug messages.
1753 * @cbctl: state structure with hardware return codes.
1754 * @setcmd: IPA command code
1756 * Returns negative errno-compatible error indication or 0 on success.
1758 static int qeth_bridgeport_makerc(struct qeth_card *card,
1759 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1762 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1764 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1765 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1766 switch (cbctl->cmd_rc) {
1775 case 0x000C: /* Not configured as bridge Port */
1776 rc = -ENODEV; /* maybe not the best code here? */
1777 dev_err(&card->gdev->dev,
1778 "The device is not configured as a Bridge Port\n");
1781 case 0x0010: /* OS mismatch */
1783 dev_err(&card->gdev->dev,
1784 "A Bridge Port is already configured by a different operating system\n");
1787 case 0x0014: /* Another device is Primary */
1789 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1791 dev_err(&card->gdev->dev,
1792 "The LAN already has a primary Bridge Port\n");
1794 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1796 dev_err(&card->gdev->dev,
1797 "The device is already a primary Bridge Port\n");
1804 case 0x0018: /* This device is currently Secondary */
1806 dev_err(&card->gdev->dev,
1807 "The device is already a secondary Bridge Port\n");
1810 case 0x001C: /* Limit for Secondary devices reached */
1812 dev_err(&card->gdev->dev,
1813 "The LAN cannot have more secondary Bridge Ports\n");
1816 case 0x0024: /* This device is currently Primary */
1818 dev_err(&card->gdev->dev,
1819 "The device is already a primary Bridge Port\n");
1822 case 0x0020: /* Not authorized by zManager */
1824 dev_err(&card->gdev->dev,
1825 "The device is not authorized to be a Bridge Port\n");
1831 switch (cbctl->ipa_rc) {
1832 case IPA_RC_NOTSUPP:
1835 case IPA_RC_UNSUPPORTED_COMMAND:
1843 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1844 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1849 static inline int ipa_cmd_sbp(struct qeth_card *card)
1851 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1852 IPA_CMD_SETBRIDGEPORT_IQD :
1853 IPA_CMD_SETBRIDGEPORT_OSA;
1856 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1857 struct qeth_reply *reply, unsigned long data)
1859 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1860 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1861 QETH_CARD_TEXT(card, 2, "brqsupcb");
1862 cbctl->ipa_rc = cmd->hdr.return_code;
1863 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1864 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1865 cbctl->data.supported =
1866 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1868 cbctl->data.supported = 0;
1874 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1875 * @card: qeth_card structure pointer.
1877 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1878 * strucutre: card->options.sbp.supported_funcs.
1880 static void qeth_bridgeport_query_support(struct qeth_card *card)
1882 struct qeth_cmd_buffer *iob;
1883 struct qeth_ipa_cmd *cmd;
1884 struct _qeth_sbp_cbctl cbctl;
1886 QETH_CARD_TEXT(card, 2, "brqsuppo");
1887 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1890 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1891 cmd->data.sbp.hdr.cmdlength =
1892 sizeof(struct qeth_ipacmd_sbp_hdr) +
1893 sizeof(struct qeth_sbp_query_cmds_supp);
1894 cmd->data.sbp.hdr.command_code =
1895 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1896 cmd->data.sbp.hdr.used_total = 1;
1897 cmd->data.sbp.hdr.seq_no = 1;
1898 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1900 qeth_bridgeport_makerc(card, &cbctl,
1901 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1902 /* non-zero makerc signifies failure, and produce messages */
1903 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1906 card->options.sbp.supported_funcs = cbctl.data.supported;
1909 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1910 struct qeth_reply *reply, unsigned long data)
1912 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1913 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1914 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1916 QETH_CARD_TEXT(card, 2, "brqprtcb");
1917 cbctl->ipa_rc = cmd->hdr.return_code;
1918 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1919 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1921 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1922 cbctl->cmd_rc = 0xffff;
1923 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1926 /* first entry contains the state of the local port */
1927 if (qports->num_entries > 0) {
1928 if (cbctl->data.qports.role)
1929 *cbctl->data.qports.role = qports->entry[0].role;
1930 if (cbctl->data.qports.state)
1931 *cbctl->data.qports.state = qports->entry[0].state;
1937 * qeth_bridgeport_query_ports() - query local bridgeport status.
1938 * @card: qeth_card structure pointer.
1939 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1940 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1942 * Returns negative errno-compatible error indication or 0 on success.
1944 * 'role' and 'state' are not updated in case of hardware operation failure.
1946 int qeth_bridgeport_query_ports(struct qeth_card *card,
1947 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1950 struct qeth_cmd_buffer *iob;
1951 struct qeth_ipa_cmd *cmd;
1952 struct _qeth_sbp_cbctl cbctl = {
1961 QETH_CARD_TEXT(card, 2, "brqports");
1962 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1964 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1967 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1968 cmd->data.sbp.hdr.cmdlength =
1969 sizeof(struct qeth_ipacmd_sbp_hdr);
1970 cmd->data.sbp.hdr.command_code =
1971 IPA_SBP_QUERY_BRIDGE_PORTS;
1972 cmd->data.sbp.hdr.used_total = 1;
1973 cmd->data.sbp.hdr.seq_no = 1;
1974 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1978 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1980 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1982 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1983 struct qeth_reply *reply, unsigned long data)
1985 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1986 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1987 QETH_CARD_TEXT(card, 2, "brsetrcb");
1988 cbctl->ipa_rc = cmd->hdr.return_code;
1989 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1994 * qeth_bridgeport_setrole() - Assign primary role to the port.
1995 * @card: qeth_card structure pointer.
1996 * @role: Role to assign.
1998 * Returns negative errno-compatible error indication or 0 on success.
2000 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
2004 struct qeth_cmd_buffer *iob;
2005 struct qeth_ipa_cmd *cmd;
2006 struct _qeth_sbp_cbctl cbctl;
2007 enum qeth_ipa_sbp_cmd setcmd;
2009 QETH_CARD_TEXT(card, 2, "brsetrol");
2011 case QETH_SBP_ROLE_NONE:
2012 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
2013 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2014 sizeof(struct qeth_sbp_reset_role);
2016 case QETH_SBP_ROLE_PRIMARY:
2017 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
2018 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2019 sizeof(struct qeth_sbp_set_primary);
2021 case QETH_SBP_ROLE_SECONDARY:
2022 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
2023 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2024 sizeof(struct qeth_sbp_set_secondary);
2029 if (!(card->options.sbp.supported_funcs & setcmd))
2031 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
2034 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2035 cmd->data.sbp.hdr.cmdlength = cmdlength;
2036 cmd->data.sbp.hdr.command_code = setcmd;
2037 cmd->data.sbp.hdr.used_total = 1;
2038 cmd->data.sbp.hdr.seq_no = 1;
2039 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
2043 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
2047 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
2048 * @card: qeth_card structure pointer, for debug messages.
2050 * Returns negative errno-compatible error indication or 0 on success.
2052 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2065 dev_err(&card->gdev->dev,
2066 "Setting address notification failed\n");
2078 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2079 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2084 static void qeth_bridgeport_an_set_cb(void *priv,
2085 enum qdio_brinfo_entry_type type, void *entry)
2087 struct qeth_card *card = (struct qeth_card *)priv;
2088 struct qdio_brinfo_entry_l2 *l2entry;
2091 if (type != l2_addr_lnid) {
2096 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2097 code = IPA_ADDR_CHANGE_CODE_MACADDR;
2098 if (l2entry->addr_lnid.lnid)
2099 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2100 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2101 (struct net_if_token *)&l2entry->nit,
2102 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2106 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2107 * @card: qeth_card structure pointer.
2108 * @enable: 0 - disable, non-zero - enable notifications
2110 * Returns negative errno-compatible error indication or 0 on success.
2112 * On enable, emits a series of address notifications udev events for all
2113 * currently registered hosts.
2115 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2119 struct ccw_device *ddev;
2120 struct subchannel_id schid;
2124 if (!card->options.sbp.supported_funcs)
2126 ddev = CARD_DDEV(card);
2127 ccw_device_get_schid(ddev, &schid);
2130 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2131 rc = qdio_pnso_brinfo(schid, 1, &response,
2132 qeth_bridgeport_an_set_cb, card);
2134 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2135 return qeth_anset_makerc(card, rc, response);
2137 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2139 module_init(qeth_l2_init);
2140 module_exit(qeth_l2_exit);
2141 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2142 MODULE_DESCRIPTION("qeth layer 2 discipline");
2143 MODULE_LICENSE("GPL");