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 int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
31 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
33 static void qeth_l2_set_rx_mode(struct net_device *);
34 static int qeth_l2_recover(void *);
35 static void qeth_bridgeport_query_support(struct qeth_card *card);
36 static void qeth_bridge_state_change(struct qeth_card *card,
37 struct qeth_ipa_cmd *cmd);
38 static void qeth_bridge_host_event(struct qeth_card *card,
39 struct qeth_ipa_cmd *cmd);
41 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
43 struct qeth_card *card = dev->ml_priv;
44 struct mii_ioctl_data *mii_data;
50 if (!qeth_card_hw_is_reachable(card))
53 if (card->info.type == QETH_CARD_TYPE_OSN)
57 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
58 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
60 case SIOC_QETH_GET_CARD_TYPE:
61 if ((card->info.type == QETH_CARD_TYPE_OSD ||
62 card->info.type == QETH_CARD_TYPE_OSM ||
63 card->info.type == QETH_CARD_TYPE_OSX) &&
69 mii_data = if_mii(rq);
73 mii_data = if_mii(rq);
74 if (mii_data->phy_id != 0)
77 mii_data->val_out = qeth_mdio_read(dev,
78 mii_data->phy_id, mii_data->reg_num);
80 case SIOC_QETH_QUERY_OAT:
81 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
87 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
91 static int qeth_l2_verify_dev(struct net_device *dev)
93 struct qeth_card *card;
97 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
98 list_for_each_entry(card, &qeth_core_card_list.list, list) {
99 if (card->dev == dev) {
104 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
109 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
111 struct qeth_card *card;
112 struct net_device *ndev;
115 struct ccw_dev_id read_devid;
118 memcpy(&temp_dev_no, read_dev_no, 2);
119 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
120 list_for_each_entry(card, &qeth_core_card_list.list, list) {
121 ccw_device_get_id(CARD_RDEV(card), &read_devid);
122 if (read_devid.devno == temp_dev_no) {
127 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
131 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
136 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
141 case IPA_RC_L2_UNSUPPORTED_CMD:
144 case IPA_RC_L2_ADDR_TABLE_FULL:
147 case IPA_RC_L2_DUP_MAC:
148 case IPA_RC_L2_DUP_LAYER3_MAC:
151 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
152 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
155 case IPA_RC_L2_MAC_NOT_FOUND:
168 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
172 QETH_CARD_TEXT(card, 2, "L2Sgmac");
173 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
176 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
177 mac, QETH_CARD_IFNAME(card));
179 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
180 mac, QETH_CARD_IFNAME(card), rc);
184 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
188 QETH_CARD_TEXT(card, 2, "L2Dgmac");
189 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
193 "Could not delete group MAC %pM on %s: %d\n",
194 mac, QETH_CARD_IFNAME(card), rc);
198 static inline u32 qeth_l2_mac_hash(const u8 *addr)
200 return get_unaligned((u32 *)(&addr[2]));
203 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
209 rc = qeth_setdel_makerc(card,
210 qeth_l2_send_setdelmac(card, mac->mac_addr,
213 rc = qeth_setdel_makerc(card,
214 qeth_l2_send_setgroupmac(card, mac->mac_addr));
219 static void qeth_l2_del_all_macs(struct qeth_card *card, int del)
221 struct qeth_mac *mac;
222 struct hlist_node *tmp;
225 spin_lock_bh(&card->mclock);
226 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
229 qeth_l2_send_setdelmac(card, mac->mac_addr,
232 qeth_l2_send_delgroupmac(card, mac->mac_addr);
234 hash_del(&mac->hnode);
237 spin_unlock_bh(&card->mclock);
240 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
243 if (card->info.type == QETH_CARD_TYPE_OSN)
245 if (is_broadcast_ether_addr(skb->data))
246 return RTN_BROADCAST;
247 if (is_multicast_ether_addr(skb->data))
248 return RTN_MULTICAST;
252 static inline void qeth_l2_hdr_csum(struct qeth_card *card,
253 struct qeth_hdr *hdr, struct sk_buff *skb)
255 struct iphdr *iph = ip_hdr(skb);
257 /* tcph->check contains already the pseudo hdr checksum
258 * so just set the header flags
260 if (iph->protocol == IPPROTO_UDP)
261 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
262 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
263 QETH_HDR_EXT_CSUM_HDR_REQ;
265 if (card->options.performance_stats)
266 card->perf_stats.tx_csum++;
269 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
270 struct sk_buff *skb, int cast_type)
272 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
274 memset(hdr, 0, sizeof(struct qeth_hdr));
275 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
277 /* set byte byte 3 to casting flags */
278 if (cast_type == RTN_MULTICAST)
279 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
280 else if (cast_type == RTN_BROADCAST)
281 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
283 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
285 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
286 /* VSWITCH relies on the VLAN
287 * information to be present in
289 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
290 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
291 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
295 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
296 struct qeth_reply *reply, unsigned long data)
298 struct qeth_ipa_cmd *cmd;
300 QETH_CARD_TEXT(card, 2, "L2sdvcb");
301 cmd = (struct qeth_ipa_cmd *) data;
302 if (cmd->hdr.return_code) {
303 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
304 "Continuing\n", cmd->data.setdelvlan.vlan_id,
305 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
306 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
307 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
312 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
313 enum qeth_ipa_cmds ipacmd)
315 struct qeth_ipa_cmd *cmd;
316 struct qeth_cmd_buffer *iob;
318 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
319 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
322 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
323 cmd->data.setdelvlan.vlan_id = i;
324 return qeth_send_ipa_cmd(card, iob,
325 qeth_l2_send_setdelvlan_cb, NULL);
328 static void qeth_l2_process_vlans(struct qeth_card *card)
330 struct qeth_vlan_vid *id;
331 QETH_CARD_TEXT(card, 3, "L2prcvln");
332 spin_lock_bh(&card->vlanlock);
333 list_for_each_entry(id, &card->vid_list, list) {
334 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
336 spin_unlock_bh(&card->vlanlock);
339 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
340 __be16 proto, u16 vid)
342 struct qeth_card *card = dev->ml_priv;
343 struct qeth_vlan_vid *id;
346 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
349 if (card->info.type == QETH_CARD_TYPE_OSM) {
350 QETH_CARD_TEXT(card, 3, "aidOSM");
353 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
354 QETH_CARD_TEXT(card, 3, "aidREC");
357 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
360 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
365 spin_lock_bh(&card->vlanlock);
366 list_add_tail(&id->list, &card->vid_list);
367 spin_unlock_bh(&card->vlanlock);
374 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
375 __be16 proto, u16 vid)
377 struct qeth_vlan_vid *id, *tmpid = NULL;
378 struct qeth_card *card = dev->ml_priv;
381 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
382 if (card->info.type == QETH_CARD_TYPE_OSM) {
383 QETH_CARD_TEXT(card, 3, "kidOSM");
386 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
387 QETH_CARD_TEXT(card, 3, "kidREC");
390 spin_lock_bh(&card->vlanlock);
391 list_for_each_entry(id, &card->vid_list, list) {
392 if (id->vid == vid) {
398 spin_unlock_bh(&card->vlanlock);
400 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
403 qeth_l2_set_rx_mode(card->dev);
407 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
409 QETH_DBF_TEXT(SETUP , 2, "stopcard");
410 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
412 qeth_set_allowed_threads(card, 0, 1);
413 if (card->read.state == CH_STATE_UP &&
414 card->write.state == CH_STATE_UP &&
415 (card->state == CARD_STATE_UP)) {
417 card->info.type != QETH_CARD_TYPE_OSN) {
418 qeth_l2_stop(card->dev);
421 dev_close(card->dev);
424 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
425 card->state = CARD_STATE_SOFTSETUP;
427 if (card->state == CARD_STATE_SOFTSETUP) {
428 qeth_l2_del_all_macs(card, 0);
429 qeth_clear_ipacmd_list(card);
430 card->state = CARD_STATE_HARDSETUP;
432 if (card->state == CARD_STATE_HARDSETUP) {
433 qeth_qdio_clear_card(card, 0);
434 qeth_clear_qdio_buffers(card);
435 qeth_clear_working_pool_list(card);
436 card->state = CARD_STATE_DOWN;
438 if (card->state == CARD_STATE_DOWN) {
439 qeth_clear_cmd_buffers(&card->read);
440 qeth_clear_cmd_buffers(&card->write);
444 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
445 int budget, int *done)
449 struct qeth_hdr *hdr;
453 WARN_ON_ONCE(!budget);
455 skb = qeth_core_get_next_skb(card,
456 &card->qdio.in_q->bufs[card->rx.b_index],
457 &card->rx.b_element, &card->rx.e_offset, &hdr);
462 skb->dev = card->dev;
463 switch (hdr->hdr.l2.id) {
464 case QETH_HEADER_TYPE_LAYER2:
465 skb->pkt_type = PACKET_HOST;
466 skb->protocol = eth_type_trans(skb, skb->dev);
467 if ((card->dev->features & NETIF_F_RXCSUM)
468 && ((hdr->hdr.l2.flags[1] &
469 (QETH_HDR_EXT_CSUM_HDR_REQ |
470 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
471 (QETH_HDR_EXT_CSUM_HDR_REQ |
472 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
473 skb->ip_summed = CHECKSUM_UNNECESSARY;
475 skb->ip_summed = CHECKSUM_NONE;
476 if (skb->protocol == htons(ETH_P_802_2))
477 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
479 napi_gro_receive(&card->napi, skb);
481 case QETH_HEADER_TYPE_OSN:
482 if (card->info.type == QETH_CARD_TYPE_OSN) {
483 skb_push(skb, sizeof(struct qeth_hdr));
484 skb_copy_to_linear_data(skb, hdr,
485 sizeof(struct qeth_hdr));
487 card->osn_info.data_cb(skb);
492 dev_kfree_skb_any(skb);
493 QETH_CARD_TEXT(card, 3, "inbunkno");
494 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
499 card->stats.rx_packets++;
500 card->stats.rx_bytes += len;
505 static int qeth_l2_poll(struct napi_struct *napi, int budget)
507 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
509 struct qeth_qdio_buffer *buffer;
511 int new_budget = budget;
513 if (card->options.performance_stats) {
514 card->perf_stats.inbound_cnt++;
515 card->perf_stats.inbound_start_time = qeth_get_micros();
519 if (!card->rx.b_count) {
520 card->rx.qdio_err = 0;
521 card->rx.b_count = qdio_get_next_buffers(
522 card->data.ccwdev, 0, &card->rx.b_index,
524 if (card->rx.b_count <= 0) {
525 card->rx.b_count = 0;
529 &card->qdio.in_q->bufs[card->rx.b_index]
531 card->rx.e_offset = 0;
534 while (card->rx.b_count) {
535 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
536 if (!(card->rx.qdio_err &&
537 qeth_check_qdio_errors(card, buffer->buffer,
538 card->rx.qdio_err, "qinerr")))
539 work_done += qeth_l2_process_inbound_buffer(
540 card, new_budget, &done);
545 if (card->options.performance_stats)
546 card->perf_stats.bufs_rec++;
547 qeth_put_buffer_pool_entry(card,
549 qeth_queue_input_buffer(card, card->rx.b_index);
551 if (card->rx.b_count) {
553 (card->rx.b_index + 1) %
554 QDIO_MAX_BUFFERS_PER_Q;
557 ->bufs[card->rx.b_index]
559 card->rx.e_offset = 0;
563 if (work_done >= budget)
566 new_budget = budget - work_done;
571 if (qdio_start_irq(card->data.ccwdev, 0))
572 napi_schedule(&card->napi);
574 if (card->options.performance_stats)
575 card->perf_stats.inbound_time += qeth_get_micros() -
576 card->perf_stats.inbound_start_time;
580 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
581 enum qeth_ipa_cmds ipacmd)
583 struct qeth_ipa_cmd *cmd;
584 struct qeth_cmd_buffer *iob;
586 QETH_CARD_TEXT(card, 2, "L2sdmac");
587 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
590 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
591 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
592 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
593 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
596 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
600 QETH_CARD_TEXT(card, 2, "L2Setmac");
601 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
604 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
605 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
606 dev_info(&card->gdev->dev,
607 "MAC address %pM successfully registered on device %s\n",
608 card->dev->dev_addr, card->dev->name);
610 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
613 dev_warn(&card->gdev->dev,
614 "MAC address %pM already exists\n", mac);
617 dev_warn(&card->gdev->dev,
618 "MAC address %pM is not authorized\n", mac);
625 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
629 QETH_CARD_TEXT(card, 2, "L2Delmac");
630 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
632 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
635 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
639 static int qeth_l2_request_initial_mac(struct qeth_card *card)
642 char vendor_pre[] = {0x02, 0x00, 0x00};
644 QETH_DBF_TEXT(SETUP, 2, "doL2init");
645 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
647 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
648 rc = qeth_query_setadapterparms(card);
650 QETH_DBF_MESSAGE(2, "could not query adapter "
651 "parameters on device %s: x%x\n",
652 CARD_BUS_ID(card), rc);
656 if (card->info.type == QETH_CARD_TYPE_IQD ||
657 card->info.type == QETH_CARD_TYPE_OSM ||
658 card->info.type == QETH_CARD_TYPE_OSX ||
659 card->info.guestlan) {
660 rc = qeth_setadpparms_change_macaddr(card);
662 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
663 "device %s: x%x\n", CARD_BUS_ID(card), rc);
664 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
667 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
669 eth_random_addr(card->dev->dev_addr);
670 memcpy(card->dev->dev_addr, vendor_pre, 3);
675 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
677 struct sockaddr *addr = p;
678 struct qeth_card *card = dev->ml_priv;
681 QETH_CARD_TEXT(card, 3, "setmac");
683 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
684 QETH_CARD_TEXT(card, 3, "setmcINV");
688 if (card->info.type == QETH_CARD_TYPE_OSN ||
689 card->info.type == QETH_CARD_TYPE_OSM ||
690 card->info.type == QETH_CARD_TYPE_OSX) {
691 QETH_CARD_TEXT(card, 3, "setmcTYP");
694 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
695 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
696 QETH_CARD_TEXT(card, 3, "setmcREC");
699 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
700 if (!rc || (rc == -ENOENT))
701 rc = qeth_l2_send_setmac(card, addr->sa_data);
702 return rc ? -EINVAL : 0;
705 static void qeth_promisc_to_bridge(struct qeth_card *card)
707 struct net_device *dev = card->dev;
708 enum qeth_ipa_promisc_modes promisc_mode;
712 QETH_CARD_TEXT(card, 3, "pmisc2br");
714 if (!card->options.sbp.reflect_promisc)
716 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
717 : SET_PROMISC_MODE_OFF;
718 if (promisc_mode == card->info.promisc_mode)
721 if (promisc_mode == SET_PROMISC_MODE_ON) {
722 if (card->options.sbp.reflect_promisc_primary)
723 role = QETH_SBP_ROLE_PRIMARY;
725 role = QETH_SBP_ROLE_SECONDARY;
727 role = QETH_SBP_ROLE_NONE;
729 rc = qeth_bridgeport_setrole(card, role);
730 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
731 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
733 card->options.sbp.role = role;
734 card->info.promisc_mode = promisc_mode;
738 /* New MAC address is added to the hash table and marked to be written on card
739 * only if there is not in the hash table storage already
743 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
745 struct qeth_mac *mac;
747 hash_for_each_possible(card->mac_htable, mac, hnode,
748 qeth_l2_mac_hash(ha->addr)) {
749 if (is_uc == mac->is_uc &&
750 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
751 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
756 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
761 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
763 mac->disp_flag = QETH_DISP_ADDR_ADD;
765 hash_add(card->mac_htable, &mac->hnode,
766 qeth_l2_mac_hash(mac->mac_addr));
770 static void qeth_l2_set_rx_mode(struct net_device *dev)
772 struct qeth_card *card = dev->ml_priv;
773 struct netdev_hw_addr *ha;
774 struct qeth_mac *mac;
775 struct hlist_node *tmp;
779 if (card->info.type == QETH_CARD_TYPE_OSN)
782 QETH_CARD_TEXT(card, 3, "setmulti");
783 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
784 (card->state != CARD_STATE_UP))
787 spin_lock_bh(&card->mclock);
789 netdev_for_each_mc_addr(ha, dev)
790 qeth_l2_add_mac(card, ha, 0);
792 netdev_for_each_uc_addr(ha, dev)
793 qeth_l2_add_mac(card, ha, 1);
795 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
796 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
798 rc = qeth_l2_send_delgroupmac(card,
801 rc = qeth_l2_send_setdelmac(card, mac->mac_addr,
805 hash_del(&mac->hnode);
808 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
809 rc = qeth_l2_write_mac(card, mac);
811 hash_del(&mac->hnode);
814 mac->disp_flag = QETH_DISP_ADDR_DELETE;
816 mac->disp_flag = QETH_DISP_ADDR_DELETE;
819 spin_unlock_bh(&card->mclock);
821 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
822 qeth_setadp_promisc_mode(card);
824 qeth_promisc_to_bridge(card);
827 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
830 struct qeth_hdr *hdr = NULL;
832 struct qeth_card *card = dev->ml_priv;
833 struct sk_buff *new_skb = skb;
834 int cast_type = qeth_l2_get_cast_type(card, skb);
835 struct qeth_qdio_out_q *queue;
836 int tx_bytes = skb->len;
837 int data_offset = -1;
838 int elements_needed = 0;
842 if (card->qdio.do_prio_queueing || (cast_type &&
843 card->info.is_multicast_different))
844 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
845 qeth_get_ip_version(skb), cast_type)];
847 queue = card->qdio.out_qs[card->qdio.default_out_queue];
849 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
850 card->stats.tx_carrier_errors++;
854 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
855 (skb->protocol == htons(ETH_P_IPV6)))
858 if (card->options.performance_stats) {
859 card->perf_stats.outbound_cnt++;
860 card->perf_stats.outbound_start_time = qeth_get_micros();
862 netif_stop_queue(dev);
864 /* fix hardware limitation: as long as we do not have sbal
865 * chaining we can not send long frag lists
867 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
868 !qeth_get_elements_no(card, new_skb, 0, 0)) {
869 int lin_rc = skb_linearize(new_skb);
871 if (card->options.performance_stats) {
873 card->perf_stats.tx_linfail++;
875 card->perf_stats.tx_lin++;
881 if (card->info.type == QETH_CARD_TYPE_OSN)
882 hdr = (struct qeth_hdr *)skb->data;
884 if (card->info.type == QETH_CARD_TYPE_IQD) {
886 data_offset = ETH_HLEN;
888 hdr = kmem_cache_alloc(qeth_core_header_cache,
893 skb_reset_mac_header(new_skb);
894 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
895 hdr->hdr.l2.pkt_length = new_skb->len;
896 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
897 skb_mac_header(new_skb), ETH_HLEN);
899 /* create a clone with writeable headroom */
900 new_skb = skb_realloc_headroom(skb,
901 sizeof(struct qeth_hdr));
904 hdr = (struct qeth_hdr *)skb_push(new_skb,
905 sizeof(struct qeth_hdr));
906 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
907 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
908 if (new_skb->ip_summed == CHECKSUM_PARTIAL)
909 qeth_l2_hdr_csum(card, hdr, new_skb);
913 elements = qeth_get_elements_no(card, new_skb, elements_needed,
914 (data_offset > 0) ? data_offset : 0);
916 if (data_offset >= 0)
917 kmem_cache_free(qeth_core_header_cache, hdr);
921 if (card->info.type != QETH_CARD_TYPE_IQD) {
922 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
923 sizeof(struct qeth_hdr_layer2)))
925 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
928 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
929 elements, data_offset, hd_len);
931 card->stats.tx_packets++;
932 card->stats.tx_bytes += tx_bytes;
933 if (card->options.performance_stats) {
934 nr_frags = skb_shinfo(new_skb)->nr_frags;
936 card->perf_stats.sg_skbs_sent++;
937 /* nr_frags + skb->data */
938 card->perf_stats.sg_frags_sent += nr_frags + 1;
942 dev_kfree_skb_any(skb);
945 if (data_offset >= 0)
946 kmem_cache_free(qeth_core_header_cache, hdr);
950 dev_kfree_skb_any(new_skb);
951 return NETDEV_TX_BUSY;
956 netif_wake_queue(dev);
957 if (card->options.performance_stats)
958 card->perf_stats.outbound_time += qeth_get_micros() -
959 card->perf_stats.outbound_start_time;
963 card->stats.tx_dropped++;
964 card->stats.tx_errors++;
965 if ((new_skb != skb) && new_skb)
966 dev_kfree_skb_any(new_skb);
967 dev_kfree_skb_any(skb);
968 netif_wake_queue(dev);
972 static int __qeth_l2_open(struct net_device *dev)
974 struct qeth_card *card = dev->ml_priv;
977 QETH_CARD_TEXT(card, 4, "qethopen");
978 if (card->state == CARD_STATE_UP)
980 if (card->state != CARD_STATE_SOFTSETUP)
983 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
984 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
985 QETH_CARD_TEXT(card, 4, "nomacadr");
988 card->data.state = CH_STATE_UP;
989 card->state = CARD_STATE_UP;
990 netif_start_queue(dev);
992 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
993 napi_enable(&card->napi);
995 napi_schedule(&card->napi);
996 /* kick-start the NAPI softirq: */
1003 static int qeth_l2_open(struct net_device *dev)
1005 struct qeth_card *card = dev->ml_priv;
1007 QETH_CARD_TEXT(card, 5, "qethope_");
1008 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1009 QETH_CARD_TEXT(card, 3, "openREC");
1010 return -ERESTARTSYS;
1012 return __qeth_l2_open(dev);
1015 static int qeth_l2_stop(struct net_device *dev)
1017 struct qeth_card *card = dev->ml_priv;
1019 QETH_CARD_TEXT(card, 4, "qethstop");
1020 netif_tx_disable(dev);
1021 if (card->state == CARD_STATE_UP) {
1022 card->state = CARD_STATE_SOFTSETUP;
1023 napi_disable(&card->napi);
1028 static const struct device_type qeth_l2_devtype = {
1029 .name = "qeth_layer2",
1030 .groups = qeth_l2_attr_groups,
1033 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
1035 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1038 if (gdev->dev.type == &qeth_generic_devtype) {
1039 rc = qeth_l2_create_device_attributes(&gdev->dev);
1043 INIT_LIST_HEAD(&card->vid_list);
1044 hash_init(card->mac_htable);
1045 card->options.layer2 = 1;
1046 card->info.hwtrap = 0;
1050 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
1052 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1054 if (cgdev->dev.type == &qeth_generic_devtype)
1055 qeth_l2_remove_device_attributes(&cgdev->dev);
1056 qeth_set_allowed_threads(card, 0, 1);
1057 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1059 if (cgdev->state == CCWGROUP_ONLINE)
1060 qeth_l2_set_offline(cgdev);
1063 unregister_netdev(card->dev);
1064 free_netdev(card->dev);
1070 static const struct ethtool_ops qeth_l2_ethtool_ops = {
1071 .get_link = ethtool_op_get_link,
1072 .get_strings = qeth_core_get_strings,
1073 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1074 .get_sset_count = qeth_core_get_sset_count,
1075 .get_drvinfo = qeth_core_get_drvinfo,
1076 .get_settings = qeth_core_ethtool_get_settings,
1079 static const struct ethtool_ops qeth_l2_osn_ops = {
1080 .get_strings = qeth_core_get_strings,
1081 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1082 .get_sset_count = qeth_core_get_sset_count,
1083 .get_drvinfo = qeth_core_get_drvinfo,
1086 static const struct net_device_ops qeth_l2_netdev_ops = {
1087 .ndo_open = qeth_l2_open,
1088 .ndo_stop = qeth_l2_stop,
1089 .ndo_get_stats = qeth_get_stats,
1090 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1091 .ndo_features_check = qeth_features_check,
1092 .ndo_validate_addr = eth_validate_addr,
1093 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1094 .ndo_do_ioctl = qeth_l2_do_ioctl,
1095 .ndo_set_mac_address = qeth_l2_set_mac_address,
1096 .ndo_change_mtu = qeth_change_mtu,
1097 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1098 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1099 .ndo_tx_timeout = qeth_tx_timeout,
1100 .ndo_fix_features = qeth_fix_features,
1101 .ndo_set_features = qeth_set_features
1104 static int qeth_l2_setup_netdev(struct qeth_card *card)
1106 switch (card->info.type) {
1107 case QETH_CARD_TYPE_IQD:
1108 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1111 case QETH_CARD_TYPE_OSN:
1112 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1116 card->dev = alloc_etherdev(0);
1122 card->dev->ml_priv = card;
1123 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
1124 card->dev->mtu = card->info.initial_mtu;
1125 card->dev->netdev_ops = &qeth_l2_netdev_ops;
1126 if (card->info.type == QETH_CARD_TYPE_OSN) {
1127 card->dev->ethtool_ops = &qeth_l2_osn_ops;
1128 card->dev->flags |= IFF_NOARP;
1130 card->dev->ethtool_ops = &qeth_l2_ethtool_ops;
1132 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1133 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1134 card->dev->hw_features = NETIF_F_SG;
1135 card->dev->vlan_features = NETIF_F_SG;
1136 card->dev->features |= NETIF_F_SG;
1137 /* OSA 3S and earlier has no RX/TX support */
1138 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1139 card->dev->hw_features |= NETIF_F_IP_CSUM;
1140 card->dev->vlan_features |= NETIF_F_IP_CSUM;
1142 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1143 card->dev->hw_features |= NETIF_F_RXCSUM;
1144 card->dev->vlan_features |= NETIF_F_RXCSUM;
1147 card->info.broadcast_capable = 1;
1148 qeth_l2_request_initial_mac(card);
1149 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1150 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1151 netif_carrier_off(card->dev);
1152 return register_netdev(card->dev);
1155 static int qeth_l2_start_ipassists(struct qeth_card *card)
1157 /* configure isolation level */
1158 if (qeth_set_access_ctrl_online(card, 0))
1163 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1165 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1167 enum qeth_card_states recover_flag;
1169 mutex_lock(&card->discipline_mutex);
1170 mutex_lock(&card->conf_mutex);
1171 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1172 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1174 recover_flag = card->state;
1175 rc = qeth_core_hardsetup_card(card);
1177 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1181 qeth_bridgeport_query_support(card);
1182 if (card->options.sbp.supported_funcs)
1183 dev_info(&card->gdev->dev,
1184 "The device represents a Bridge Capable Port\n");
1185 qeth_trace_features(card);
1187 if (!card->dev && qeth_l2_setup_netdev(card)) {
1192 if (card->info.type != QETH_CARD_TYPE_OSN)
1193 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1195 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1196 if (card->info.hwtrap &&
1197 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1198 card->info.hwtrap = 0;
1200 card->info.hwtrap = 0;
1202 qeth_l2_setup_bridgeport_attrs(card);
1204 card->state = CARD_STATE_HARDSETUP;
1205 memset(&card->rx, 0, sizeof(struct qeth_rx));
1206 qeth_print_status_message(card);
1209 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1211 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1212 (card->info.type == QETH_CARD_TYPE_OSX)) {
1213 rc = qeth_l2_start_ipassists(card);
1218 if (card->info.type != QETH_CARD_TYPE_OSN &&
1219 card->info.type != QETH_CARD_TYPE_OSM)
1220 qeth_l2_process_vlans(card);
1222 netif_tx_disable(card->dev);
1224 rc = qeth_init_qdio_queues(card);
1226 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1230 card->state = CARD_STATE_SOFTSETUP;
1231 if (card->lan_online)
1232 netif_carrier_on(card->dev);
1234 netif_carrier_off(card->dev);
1236 qeth_set_allowed_threads(card, 0xffffffff, 0);
1237 if (recover_flag == CARD_STATE_RECOVER) {
1238 if (recovery_mode &&
1239 card->info.type != QETH_CARD_TYPE_OSN) {
1240 __qeth_l2_open(card->dev);
1243 dev_open(card->dev);
1246 /* this also sets saved unicast addresses */
1247 qeth_l2_set_rx_mode(card->dev);
1249 qeth_recover_features(card->dev);
1252 /* let user_space know that device is online */
1253 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1254 mutex_unlock(&card->conf_mutex);
1255 mutex_unlock(&card->discipline_mutex);
1259 qeth_l2_stop_card(card, 0);
1260 ccw_device_set_offline(CARD_DDEV(card));
1261 ccw_device_set_offline(CARD_WDEV(card));
1262 ccw_device_set_offline(CARD_RDEV(card));
1263 qdio_free(CARD_DDEV(card));
1264 if (recover_flag == CARD_STATE_RECOVER)
1265 card->state = CARD_STATE_RECOVER;
1267 card->state = CARD_STATE_DOWN;
1268 mutex_unlock(&card->conf_mutex);
1269 mutex_unlock(&card->discipline_mutex);
1273 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1275 return __qeth_l2_set_online(gdev, 0);
1278 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1281 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1282 int rc = 0, rc2 = 0, rc3 = 0;
1283 enum qeth_card_states recover_flag;
1285 mutex_lock(&card->discipline_mutex);
1286 mutex_lock(&card->conf_mutex);
1287 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1288 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1290 if (card->dev && netif_carrier_ok(card->dev))
1291 netif_carrier_off(card->dev);
1292 recover_flag = card->state;
1293 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1294 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1295 card->info.hwtrap = 1;
1297 qeth_l2_stop_card(card, recovery_mode);
1298 rc = ccw_device_set_offline(CARD_DDEV(card));
1299 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1300 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1302 rc = (rc2) ? rc2 : rc3;
1304 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1305 qdio_free(CARD_DDEV(card));
1306 if (recover_flag == CARD_STATE_UP)
1307 card->state = CARD_STATE_RECOVER;
1308 /* let user_space know that device is offline */
1309 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1310 mutex_unlock(&card->conf_mutex);
1311 mutex_unlock(&card->discipline_mutex);
1315 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1317 return __qeth_l2_set_offline(cgdev, 0);
1320 static int qeth_l2_recover(void *ptr)
1322 struct qeth_card *card;
1325 card = (struct qeth_card *) ptr;
1326 QETH_CARD_TEXT(card, 2, "recover1");
1327 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1329 QETH_CARD_TEXT(card, 2, "recover2");
1330 dev_warn(&card->gdev->dev,
1331 "A recovery process has been started for the device\n");
1332 qeth_set_recovery_task(card);
1333 __qeth_l2_set_offline(card->gdev, 1);
1334 rc = __qeth_l2_set_online(card->gdev, 1);
1336 dev_info(&card->gdev->dev,
1337 "Device successfully recovered!\n");
1339 qeth_close_dev(card);
1340 dev_warn(&card->gdev->dev, "The qeth device driver "
1341 "failed to recover an error on the device\n");
1343 qeth_clear_recovery_task(card);
1344 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1345 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1349 static int __init qeth_l2_init(void)
1351 pr_info("register layer 2 discipline\n");
1355 static void __exit qeth_l2_exit(void)
1357 pr_info("unregister layer 2 discipline\n");
1360 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1362 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1363 qeth_set_allowed_threads(card, 0, 1);
1364 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1365 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1366 qeth_qdio_clear_card(card, 0);
1367 qeth_clear_qdio_buffers(card);
1368 qdio_free(CARD_DDEV(card));
1371 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1373 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1376 netif_device_detach(card->dev);
1377 qeth_set_allowed_threads(card, 0, 1);
1378 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1379 if (gdev->state == CCWGROUP_OFFLINE)
1381 if (card->state == CARD_STATE_UP) {
1382 if (card->info.hwtrap)
1383 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1384 __qeth_l2_set_offline(card->gdev, 1);
1386 __qeth_l2_set_offline(card->gdev, 0);
1390 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1392 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1395 if (gdev->state == CCWGROUP_OFFLINE)
1398 if (card->state == CARD_STATE_RECOVER) {
1399 rc = __qeth_l2_set_online(card->gdev, 1);
1402 dev_close(card->dev);
1406 rc = __qeth_l2_set_online(card->gdev, 0);
1408 qeth_set_allowed_threads(card, 0xffffffff, 0);
1410 netif_device_attach(card->dev);
1412 dev_warn(&card->gdev->dev, "The qeth device driver "
1413 "failed to recover an error on the device\n");
1417 /* Returns zero if the command is successfully "consumed" */
1418 static int qeth_l2_control_event(struct qeth_card *card,
1419 struct qeth_ipa_cmd *cmd)
1421 switch (cmd->hdr.command) {
1422 case IPA_CMD_SETBRIDGEPORT_OSA:
1423 case IPA_CMD_SETBRIDGEPORT_IQD:
1424 if (cmd->data.sbp.hdr.command_code ==
1425 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1426 qeth_bridge_state_change(card, cmd);
1430 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1431 qeth_bridge_host_event(card, cmd);
1438 struct qeth_discipline qeth_l2_discipline = {
1439 .devtype = &qeth_l2_devtype,
1440 .start_poll = qeth_qdio_start_poll,
1441 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1442 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1443 .recover = qeth_l2_recover,
1444 .setup = qeth_l2_probe_device,
1445 .remove = qeth_l2_remove_device,
1446 .set_online = qeth_l2_set_online,
1447 .set_offline = qeth_l2_set_offline,
1448 .shutdown = qeth_l2_shutdown,
1449 .freeze = qeth_l2_pm_suspend,
1450 .thaw = qeth_l2_pm_resume,
1451 .restore = qeth_l2_pm_resume,
1452 .control_event_handler = qeth_l2_control_event,
1454 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1456 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1457 struct qeth_cmd_buffer *iob)
1459 unsigned long flags;
1462 QETH_CARD_TEXT(card, 5, "osndctrd");
1464 wait_event(card->wait_q,
1465 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1466 qeth_prepare_control_data(card, len, iob);
1467 QETH_CARD_TEXT(card, 6, "osnoirqp");
1468 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1469 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1470 (addr_t) iob, 0, 0);
1471 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1473 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1474 "ccw_device_start rc = %i\n", rc);
1475 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1476 qeth_release_buffer(iob->channel, iob);
1477 atomic_set(&card->write.irq_pending, 0);
1478 wake_up(&card->wait_q);
1483 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1484 struct qeth_cmd_buffer *iob, int data_len)
1488 QETH_CARD_TEXT(card, 4, "osndipa");
1490 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1491 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1493 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1494 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1495 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1496 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1497 return qeth_osn_send_control_data(card, s1, iob);
1500 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1502 struct qeth_cmd_buffer *iob;
1503 struct qeth_card *card;
1508 card = dev->ml_priv;
1511 QETH_CARD_TEXT(card, 2, "osnsdmc");
1512 if (!qeth_card_hw_is_reachable(card))
1514 iob = qeth_wait_for_buffer(&card->write);
1515 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1516 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1519 EXPORT_SYMBOL(qeth_osn_assist);
1521 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1522 int (*assist_cb)(struct net_device *, void *),
1523 int (*data_cb)(struct sk_buff *))
1525 struct qeth_card *card;
1527 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1530 card = (*dev)->ml_priv;
1533 QETH_CARD_TEXT(card, 2, "osnreg");
1534 if ((assist_cb == NULL) || (data_cb == NULL))
1536 card->osn_info.assist_cb = assist_cb;
1537 card->osn_info.data_cb = data_cb;
1540 EXPORT_SYMBOL(qeth_osn_register);
1542 void qeth_osn_deregister(struct net_device *dev)
1544 struct qeth_card *card;
1548 card = dev->ml_priv;
1551 QETH_CARD_TEXT(card, 2, "osndereg");
1552 card->osn_info.assist_cb = NULL;
1553 card->osn_info.data_cb = NULL;
1556 EXPORT_SYMBOL(qeth_osn_deregister);
1558 /* SETBRIDGEPORT support, async notifications */
1560 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1563 * qeth_bridge_emit_host_event() - bridgeport address change notification
1564 * @card: qeth_card structure pointer, for udev events.
1565 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1566 * and reset token and addr_lnid are unused and may be NULL.
1567 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1568 * object, 0 - addition of an object.
1569 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1570 * @token: "network token" structure identifying physical address of the port.
1571 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1573 * This function is called when registrations and deregistrations are
1574 * reported by the hardware, and also when notifications are enabled -
1575 * for all currently registered addresses.
1577 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1578 enum qeth_an_event_type evtype,
1579 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1586 case anev_reg_unreg:
1587 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1588 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1589 ? "deregister" : "register");
1590 env[i] = str[i]; i++;
1591 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1592 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1594 env[i] = str[i]; i++;
1596 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1597 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1599 env[i] = str[i]; i++;
1601 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1602 token->cssid, token->ssid, token->devnum);
1603 env[i] = str[i]; i++;
1604 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1605 env[i] = str[i]; i++;
1606 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1608 env[i] = str[i]; i++;
1609 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1610 env[i] = str[i]; i++;
1613 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1614 env[i] = str[i]; i++;
1617 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1618 env[i] = str[i]; i++;
1622 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1625 struct qeth_bridge_state_data {
1626 struct work_struct worker;
1627 struct qeth_card *card;
1628 struct qeth_sbp_state_change qports;
1631 static void qeth_bridge_state_change_worker(struct work_struct *work)
1633 struct qeth_bridge_state_data *data =
1634 container_of(work, struct qeth_bridge_state_data, worker);
1635 /* We are only interested in the first entry - local port */
1636 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1637 char env_locrem[32];
1647 /* Role should not change by itself, but if it did, */
1648 /* information from the hardware is authoritative. */
1649 mutex_lock(&data->card->conf_mutex);
1650 data->card->options.sbp.role = entry->role;
1651 mutex_unlock(&data->card->conf_mutex);
1653 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1654 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1655 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1656 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1657 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1659 snprintf(env_state, sizeof(env_state), "STATE=%s",
1660 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1661 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1662 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1664 kobject_uevent_env(&data->card->gdev->dev.kobj,
1669 static void qeth_bridge_state_change(struct qeth_card *card,
1670 struct qeth_ipa_cmd *cmd)
1672 struct qeth_sbp_state_change *qports =
1673 &cmd->data.sbp.data.state_change;
1674 struct qeth_bridge_state_data *data;
1677 QETH_CARD_TEXT(card, 2, "brstchng");
1678 if (qports->num_entries == 0) {
1679 QETH_CARD_TEXT(card, 2, "BPempty");
1682 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1683 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1686 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1687 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1690 QETH_CARD_TEXT(card, 2, "BPSalloc");
1693 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1695 memcpy(&data->qports, qports,
1696 sizeof(struct qeth_sbp_state_change) + extrasize);
1697 queue_work(qeth_wq, &data->worker);
1700 struct qeth_bridge_host_data {
1701 struct work_struct worker;
1702 struct qeth_card *card;
1703 struct qeth_ipacmd_addr_change hostevs;
1706 static void qeth_bridge_host_event_worker(struct work_struct *work)
1708 struct qeth_bridge_host_data *data =
1709 container_of(work, struct qeth_bridge_host_data, worker);
1712 if (data->hostevs.lost_event_mask) {
1713 dev_info(&data->card->gdev->dev,
1714 "Address notification from the Bridge Port stopped %s (%s)\n",
1715 data->card->dev->name,
1716 (data->hostevs.lost_event_mask == 0x01)
1718 : (data->hostevs.lost_event_mask == 0x02)
1719 ? "Bridge port state change"
1720 : "Unknown reason");
1721 mutex_lock(&data->card->conf_mutex);
1722 data->card->options.sbp.hostnotification = 0;
1723 mutex_unlock(&data->card->conf_mutex);
1724 qeth_bridge_emit_host_event(data->card, anev_abort,
1727 for (i = 0; i < data->hostevs.num_entries; i++) {
1728 struct qeth_ipacmd_addr_change_entry *entry =
1729 &data->hostevs.entry[i];
1730 qeth_bridge_emit_host_event(data->card,
1733 &entry->token, &entry->addr_lnid);
1738 static void qeth_bridge_host_event(struct qeth_card *card,
1739 struct qeth_ipa_cmd *cmd)
1741 struct qeth_ipacmd_addr_change *hostevs =
1742 &cmd->data.addrchange;
1743 struct qeth_bridge_host_data *data;
1746 QETH_CARD_TEXT(card, 2, "brhostev");
1747 if (cmd->hdr.return_code != 0x0000) {
1748 if (cmd->hdr.return_code == 0x0010) {
1749 if (hostevs->lost_event_mask == 0x00)
1750 hostevs->lost_event_mask = 0xff;
1752 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1753 cmd->hdr.return_code);
1757 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1758 hostevs->num_entries;
1759 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1762 QETH_CARD_TEXT(card, 2, "BPHalloc");
1765 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1767 memcpy(&data->hostevs, hostevs,
1768 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1769 queue_work(qeth_wq, &data->worker);
1772 /* SETBRIDGEPORT support; sending commands */
1774 struct _qeth_sbp_cbctl {
1780 enum qeth_sbp_roles *role;
1781 enum qeth_sbp_states *state;
1787 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1788 * @card: qeth_card structure pointer, for debug messages.
1789 * @cbctl: state structure with hardware return codes.
1790 * @setcmd: IPA command code
1792 * Returns negative errno-compatible error indication or 0 on success.
1794 static int qeth_bridgeport_makerc(struct qeth_card *card,
1795 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1798 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1800 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1801 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1802 switch (cbctl->cmd_rc) {
1811 case 0x000C: /* Not configured as bridge Port */
1812 rc = -ENODEV; /* maybe not the best code here? */
1813 dev_err(&card->gdev->dev,
1814 "The device is not configured as a Bridge Port\n");
1817 case 0x0010: /* OS mismatch */
1819 dev_err(&card->gdev->dev,
1820 "A Bridge Port is already configured by a different operating system\n");
1823 case 0x0014: /* Another device is Primary */
1825 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1827 dev_err(&card->gdev->dev,
1828 "The LAN already has a primary Bridge Port\n");
1830 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1832 dev_err(&card->gdev->dev,
1833 "The device is already a primary Bridge Port\n");
1840 case 0x0018: /* This device is currently Secondary */
1842 dev_err(&card->gdev->dev,
1843 "The device is already a secondary Bridge Port\n");
1846 case 0x001C: /* Limit for Secondary devices reached */
1848 dev_err(&card->gdev->dev,
1849 "The LAN cannot have more secondary Bridge Ports\n");
1852 case 0x0024: /* This device is currently Primary */
1854 dev_err(&card->gdev->dev,
1855 "The device is already a primary Bridge Port\n");
1858 case 0x0020: /* Not authorized by zManager */
1860 dev_err(&card->gdev->dev,
1861 "The device is not authorized to be a Bridge Port\n");
1867 switch (cbctl->ipa_rc) {
1868 case IPA_RC_NOTSUPP:
1871 case IPA_RC_UNSUPPORTED_COMMAND:
1879 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1880 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1885 static inline int ipa_cmd_sbp(struct qeth_card *card)
1887 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1888 IPA_CMD_SETBRIDGEPORT_IQD :
1889 IPA_CMD_SETBRIDGEPORT_OSA;
1892 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1893 struct qeth_reply *reply, unsigned long data)
1895 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1896 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1897 QETH_CARD_TEXT(card, 2, "brqsupcb");
1898 cbctl->ipa_rc = cmd->hdr.return_code;
1899 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1900 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1901 cbctl->data.supported =
1902 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1904 cbctl->data.supported = 0;
1910 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1911 * @card: qeth_card structure pointer.
1913 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1914 * strucutre: card->options.sbp.supported_funcs.
1916 static void qeth_bridgeport_query_support(struct qeth_card *card)
1918 struct qeth_cmd_buffer *iob;
1919 struct qeth_ipa_cmd *cmd;
1920 struct _qeth_sbp_cbctl cbctl;
1922 QETH_CARD_TEXT(card, 2, "brqsuppo");
1923 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1926 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1927 cmd->data.sbp.hdr.cmdlength =
1928 sizeof(struct qeth_ipacmd_sbp_hdr) +
1929 sizeof(struct qeth_sbp_query_cmds_supp);
1930 cmd->data.sbp.hdr.command_code =
1931 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1932 cmd->data.sbp.hdr.used_total = 1;
1933 cmd->data.sbp.hdr.seq_no = 1;
1934 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1936 qeth_bridgeport_makerc(card, &cbctl,
1937 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1938 /* non-zero makerc signifies failure, and produce messages */
1939 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1942 card->options.sbp.supported_funcs = cbctl.data.supported;
1945 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1946 struct qeth_reply *reply, unsigned long data)
1948 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1949 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1950 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1952 QETH_CARD_TEXT(card, 2, "brqprtcb");
1953 cbctl->ipa_rc = cmd->hdr.return_code;
1954 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1955 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1957 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1958 cbctl->cmd_rc = 0xffff;
1959 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1962 /* first entry contains the state of the local port */
1963 if (qports->num_entries > 0) {
1964 if (cbctl->data.qports.role)
1965 *cbctl->data.qports.role = qports->entry[0].role;
1966 if (cbctl->data.qports.state)
1967 *cbctl->data.qports.state = qports->entry[0].state;
1973 * qeth_bridgeport_query_ports() - query local bridgeport status.
1974 * @card: qeth_card structure pointer.
1975 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1976 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1978 * Returns negative errno-compatible error indication or 0 on success.
1980 * 'role' and 'state' are not updated in case of hardware operation failure.
1982 int qeth_bridgeport_query_ports(struct qeth_card *card,
1983 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1986 struct qeth_cmd_buffer *iob;
1987 struct qeth_ipa_cmd *cmd;
1988 struct _qeth_sbp_cbctl cbctl = {
1997 QETH_CARD_TEXT(card, 2, "brqports");
1998 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
2000 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
2003 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2004 cmd->data.sbp.hdr.cmdlength =
2005 sizeof(struct qeth_ipacmd_sbp_hdr);
2006 cmd->data.sbp.hdr.command_code =
2007 IPA_SBP_QUERY_BRIDGE_PORTS;
2008 cmd->data.sbp.hdr.used_total = 1;
2009 cmd->data.sbp.hdr.seq_no = 1;
2010 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
2014 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
2016 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
2018 static int qeth_bridgeport_set_cb(struct qeth_card *card,
2019 struct qeth_reply *reply, unsigned long data)
2021 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
2022 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
2023 QETH_CARD_TEXT(card, 2, "brsetrcb");
2024 cbctl->ipa_rc = cmd->hdr.return_code;
2025 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
2030 * qeth_bridgeport_setrole() - Assign primary role to the port.
2031 * @card: qeth_card structure pointer.
2032 * @role: Role to assign.
2034 * Returns negative errno-compatible error indication or 0 on success.
2036 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
2040 struct qeth_cmd_buffer *iob;
2041 struct qeth_ipa_cmd *cmd;
2042 struct _qeth_sbp_cbctl cbctl;
2043 enum qeth_ipa_sbp_cmd setcmd;
2045 QETH_CARD_TEXT(card, 2, "brsetrol");
2047 case QETH_SBP_ROLE_NONE:
2048 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
2049 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2050 sizeof(struct qeth_sbp_reset_role);
2052 case QETH_SBP_ROLE_PRIMARY:
2053 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
2054 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2055 sizeof(struct qeth_sbp_set_primary);
2057 case QETH_SBP_ROLE_SECONDARY:
2058 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
2059 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2060 sizeof(struct qeth_sbp_set_secondary);
2065 if (!(card->options.sbp.supported_funcs & setcmd))
2067 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
2070 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2071 cmd->data.sbp.hdr.cmdlength = cmdlength;
2072 cmd->data.sbp.hdr.command_code = setcmd;
2073 cmd->data.sbp.hdr.used_total = 1;
2074 cmd->data.sbp.hdr.seq_no = 1;
2075 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
2079 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
2083 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
2084 * @card: qeth_card structure pointer, for debug messages.
2086 * Returns negative errno-compatible error indication or 0 on success.
2088 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2101 dev_err(&card->gdev->dev,
2102 "Setting address notification failed\n");
2114 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2115 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2120 static void qeth_bridgeport_an_set_cb(void *priv,
2121 enum qdio_brinfo_entry_type type, void *entry)
2123 struct qeth_card *card = (struct qeth_card *)priv;
2124 struct qdio_brinfo_entry_l2 *l2entry;
2127 if (type != l2_addr_lnid) {
2132 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2133 code = IPA_ADDR_CHANGE_CODE_MACADDR;
2134 if (l2entry->addr_lnid.lnid < VLAN_N_VID)
2135 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2136 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2137 (struct net_if_token *)&l2entry->nit,
2138 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2142 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2143 * @card: qeth_card structure pointer.
2144 * @enable: 0 - disable, non-zero - enable notifications
2146 * Returns negative errno-compatible error indication or 0 on success.
2148 * On enable, emits a series of address notifications udev events for all
2149 * currently registered hosts.
2151 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2155 struct ccw_device *ddev;
2156 struct subchannel_id schid;
2160 if (!card->options.sbp.supported_funcs)
2162 ddev = CARD_DDEV(card);
2163 ccw_device_get_schid(ddev, &schid);
2166 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2167 rc = qdio_pnso_brinfo(schid, 1, &response,
2168 qeth_bridgeport_an_set_cb, card);
2170 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2171 return qeth_anset_makerc(card, rc, response);
2173 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2175 module_init(qeth_l2_init);
2176 module_exit(qeth_l2_exit);
2177 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2178 MODULE_DESCRIPTION("qeth layer 2 discipline");
2179 MODULE_LICENSE("GPL");