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 netdev_features_t qeth_l2_fix_features(struct net_device *dev,
408 netdev_features_t features)
410 struct qeth_card *card = dev->ml_priv;
412 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
413 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
414 features &= ~NETIF_F_IP_CSUM;
415 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
416 features &= ~NETIF_F_RXCSUM;
417 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
421 static int qeth_l2_set_features(struct net_device *dev,
422 netdev_features_t features)
424 struct qeth_card *card = dev->ml_priv;
425 netdev_features_t changed = dev->features ^ features;
427 QETH_DBF_TEXT(SETUP, 2, "setfeat");
428 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
430 if (card->state == CARD_STATE_DOWN ||
431 card->state == CARD_STATE_RECOVER)
434 if (!(changed & NETIF_F_RXCSUM))
436 return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
439 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
441 QETH_DBF_TEXT(SETUP , 2, "stopcard");
442 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
444 qeth_set_allowed_threads(card, 0, 1);
445 if (card->read.state == CH_STATE_UP &&
446 card->write.state == CH_STATE_UP &&
447 (card->state == CARD_STATE_UP)) {
449 card->info.type != QETH_CARD_TYPE_OSN) {
450 qeth_l2_stop(card->dev);
453 dev_close(card->dev);
456 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
457 card->state = CARD_STATE_SOFTSETUP;
459 if (card->state == CARD_STATE_SOFTSETUP) {
460 qeth_l2_del_all_macs(card, 0);
461 qeth_clear_ipacmd_list(card);
462 card->state = CARD_STATE_HARDSETUP;
464 if (card->state == CARD_STATE_HARDSETUP) {
465 qeth_qdio_clear_card(card, 0);
466 qeth_clear_qdio_buffers(card);
467 qeth_clear_working_pool_list(card);
468 card->state = CARD_STATE_DOWN;
470 if (card->state == CARD_STATE_DOWN) {
471 qeth_clear_cmd_buffers(&card->read);
472 qeth_clear_cmd_buffers(&card->write);
476 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
477 int budget, int *done)
481 struct qeth_hdr *hdr;
485 WARN_ON_ONCE(!budget);
487 skb = qeth_core_get_next_skb(card,
488 &card->qdio.in_q->bufs[card->rx.b_index],
489 &card->rx.b_element, &card->rx.e_offset, &hdr);
494 skb->dev = card->dev;
495 switch (hdr->hdr.l2.id) {
496 case QETH_HEADER_TYPE_LAYER2:
497 skb->pkt_type = PACKET_HOST;
498 skb->protocol = eth_type_trans(skb, skb->dev);
499 if ((card->dev->features & NETIF_F_RXCSUM)
500 && ((hdr->hdr.l2.flags[1] &
501 (QETH_HDR_EXT_CSUM_HDR_REQ |
502 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
503 (QETH_HDR_EXT_CSUM_HDR_REQ |
504 QETH_HDR_EXT_CSUM_TRANSP_REQ)))
505 skb->ip_summed = CHECKSUM_UNNECESSARY;
507 skb->ip_summed = CHECKSUM_NONE;
508 if (skb->protocol == htons(ETH_P_802_2))
509 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
511 napi_gro_receive(&card->napi, skb);
513 case QETH_HEADER_TYPE_OSN:
514 if (card->info.type == QETH_CARD_TYPE_OSN) {
515 skb_push(skb, sizeof(struct qeth_hdr));
516 skb_copy_to_linear_data(skb, hdr,
517 sizeof(struct qeth_hdr));
519 card->osn_info.data_cb(skb);
524 dev_kfree_skb_any(skb);
525 QETH_CARD_TEXT(card, 3, "inbunkno");
526 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
531 card->stats.rx_packets++;
532 card->stats.rx_bytes += len;
537 static int qeth_l2_poll(struct napi_struct *napi, int budget)
539 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
541 struct qeth_qdio_buffer *buffer;
543 int new_budget = budget;
545 if (card->options.performance_stats) {
546 card->perf_stats.inbound_cnt++;
547 card->perf_stats.inbound_start_time = qeth_get_micros();
551 if (!card->rx.b_count) {
552 card->rx.qdio_err = 0;
553 card->rx.b_count = qdio_get_next_buffers(
554 card->data.ccwdev, 0, &card->rx.b_index,
556 if (card->rx.b_count <= 0) {
557 card->rx.b_count = 0;
561 &card->qdio.in_q->bufs[card->rx.b_index]
563 card->rx.e_offset = 0;
566 while (card->rx.b_count) {
567 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
568 if (!(card->rx.qdio_err &&
569 qeth_check_qdio_errors(card, buffer->buffer,
570 card->rx.qdio_err, "qinerr")))
571 work_done += qeth_l2_process_inbound_buffer(
572 card, new_budget, &done);
577 if (card->options.performance_stats)
578 card->perf_stats.bufs_rec++;
579 qeth_put_buffer_pool_entry(card,
581 qeth_queue_input_buffer(card, card->rx.b_index);
583 if (card->rx.b_count) {
585 (card->rx.b_index + 1) %
586 QDIO_MAX_BUFFERS_PER_Q;
589 ->bufs[card->rx.b_index]
591 card->rx.e_offset = 0;
595 if (work_done >= budget)
598 new_budget = budget - work_done;
603 if (qdio_start_irq(card->data.ccwdev, 0))
604 napi_schedule(&card->napi);
606 if (card->options.performance_stats)
607 card->perf_stats.inbound_time += qeth_get_micros() -
608 card->perf_stats.inbound_start_time;
612 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
613 enum qeth_ipa_cmds ipacmd)
615 struct qeth_ipa_cmd *cmd;
616 struct qeth_cmd_buffer *iob;
618 QETH_CARD_TEXT(card, 2, "L2sdmac");
619 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
622 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
623 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
624 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
625 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
628 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
632 QETH_CARD_TEXT(card, 2, "L2Setmac");
633 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
636 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
637 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
638 dev_info(&card->gdev->dev,
639 "MAC address %pM successfully registered on device %s\n",
640 card->dev->dev_addr, card->dev->name);
642 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
645 dev_warn(&card->gdev->dev,
646 "MAC address %pM already exists\n", mac);
649 dev_warn(&card->gdev->dev,
650 "MAC address %pM is not authorized\n", mac);
657 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
661 QETH_CARD_TEXT(card, 2, "L2Delmac");
662 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
664 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
667 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
671 static int qeth_l2_request_initial_mac(struct qeth_card *card)
674 char vendor_pre[] = {0x02, 0x00, 0x00};
676 QETH_DBF_TEXT(SETUP, 2, "doL2init");
677 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
679 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
680 rc = qeth_query_setadapterparms(card);
682 QETH_DBF_MESSAGE(2, "could not query adapter "
683 "parameters on device %s: x%x\n",
684 CARD_BUS_ID(card), rc);
688 if (card->info.type == QETH_CARD_TYPE_IQD ||
689 card->info.type == QETH_CARD_TYPE_OSM ||
690 card->info.type == QETH_CARD_TYPE_OSX ||
691 card->info.guestlan) {
692 rc = qeth_setadpparms_change_macaddr(card);
694 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
695 "device %s: x%x\n", CARD_BUS_ID(card), rc);
696 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
699 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
701 eth_random_addr(card->dev->dev_addr);
702 memcpy(card->dev->dev_addr, vendor_pre, 3);
707 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
709 struct sockaddr *addr = p;
710 struct qeth_card *card = dev->ml_priv;
713 QETH_CARD_TEXT(card, 3, "setmac");
715 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
716 QETH_CARD_TEXT(card, 3, "setmcINV");
720 if (card->info.type == QETH_CARD_TYPE_OSN ||
721 card->info.type == QETH_CARD_TYPE_OSM ||
722 card->info.type == QETH_CARD_TYPE_OSX) {
723 QETH_CARD_TEXT(card, 3, "setmcTYP");
726 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
727 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
728 QETH_CARD_TEXT(card, 3, "setmcREC");
731 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
732 if (!rc || (rc == -ENOENT))
733 rc = qeth_l2_send_setmac(card, addr->sa_data);
734 return rc ? -EINVAL : 0;
737 static void qeth_promisc_to_bridge(struct qeth_card *card)
739 struct net_device *dev = card->dev;
740 enum qeth_ipa_promisc_modes promisc_mode;
744 QETH_CARD_TEXT(card, 3, "pmisc2br");
746 if (!card->options.sbp.reflect_promisc)
748 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
749 : SET_PROMISC_MODE_OFF;
750 if (promisc_mode == card->info.promisc_mode)
753 if (promisc_mode == SET_PROMISC_MODE_ON) {
754 if (card->options.sbp.reflect_promisc_primary)
755 role = QETH_SBP_ROLE_PRIMARY;
757 role = QETH_SBP_ROLE_SECONDARY;
759 role = QETH_SBP_ROLE_NONE;
761 rc = qeth_bridgeport_setrole(card, role);
762 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
763 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
765 card->options.sbp.role = role;
766 card->info.promisc_mode = promisc_mode;
770 /* New MAC address is added to the hash table and marked to be written on card
771 * only if there is not in the hash table storage already
775 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
777 struct qeth_mac *mac;
779 hash_for_each_possible(card->mac_htable, mac, hnode,
780 qeth_l2_mac_hash(ha->addr)) {
781 if (is_uc == mac->is_uc &&
782 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
783 mac->disp_flag = QETH_DISP_MAC_DO_NOTHING;
788 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
793 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
795 mac->disp_flag = QETH_DISP_MAC_ADD;
797 hash_add(card->mac_htable, &mac->hnode,
798 qeth_l2_mac_hash(mac->mac_addr));
802 static void qeth_l2_set_rx_mode(struct net_device *dev)
804 struct qeth_card *card = dev->ml_priv;
805 struct netdev_hw_addr *ha;
806 struct qeth_mac *mac;
807 struct hlist_node *tmp;
811 if (card->info.type == QETH_CARD_TYPE_OSN)
814 QETH_CARD_TEXT(card, 3, "setmulti");
815 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
816 (card->state != CARD_STATE_UP))
819 spin_lock_bh(&card->mclock);
821 netdev_for_each_mc_addr(ha, dev)
822 qeth_l2_add_mac(card, ha, 0);
824 netdev_for_each_uc_addr(ha, dev)
825 qeth_l2_add_mac(card, ha, 1);
827 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
828 if (mac->disp_flag == QETH_DISP_MAC_DELETE) {
830 rc = qeth_l2_send_delgroupmac(card,
833 rc = qeth_l2_send_setdelmac(card, mac->mac_addr,
837 hash_del(&mac->hnode);
840 } else if (mac->disp_flag == QETH_DISP_MAC_ADD) {
841 rc = qeth_l2_write_mac(card, mac);
843 hash_del(&mac->hnode);
846 mac->disp_flag = QETH_DISP_MAC_DELETE;
848 mac->disp_flag = QETH_DISP_MAC_DELETE;
851 spin_unlock_bh(&card->mclock);
853 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
854 qeth_setadp_promisc_mode(card);
856 qeth_promisc_to_bridge(card);
859 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
862 struct qeth_hdr *hdr = NULL;
864 struct qeth_card *card = dev->ml_priv;
865 struct sk_buff *new_skb = skb;
866 int cast_type = qeth_l2_get_cast_type(card, skb);
867 struct qeth_qdio_out_q *queue;
868 int tx_bytes = skb->len;
869 int data_offset = -1;
870 int elements_needed = 0;
873 if (card->qdio.do_prio_queueing || (cast_type &&
874 card->info.is_multicast_different))
875 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
876 qeth_get_ip_version(skb), cast_type)];
878 queue = card->qdio.out_qs[card->qdio.default_out_queue];
880 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
881 card->stats.tx_carrier_errors++;
885 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
886 (skb->protocol == htons(ETH_P_IPV6)))
889 if (card->options.performance_stats) {
890 card->perf_stats.outbound_cnt++;
891 card->perf_stats.outbound_start_time = qeth_get_micros();
893 netif_stop_queue(dev);
895 if (card->info.type == QETH_CARD_TYPE_OSN)
896 hdr = (struct qeth_hdr *)skb->data;
898 if (card->info.type == QETH_CARD_TYPE_IQD) {
900 data_offset = ETH_HLEN;
902 hdr = kmem_cache_alloc(qeth_core_header_cache,
907 skb_reset_mac_header(new_skb);
908 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
909 hdr->hdr.l2.pkt_length = new_skb->len;
910 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
911 skb_mac_header(new_skb), ETH_HLEN);
913 /* create a clone with writeable headroom */
914 new_skb = skb_realloc_headroom(skb,
915 sizeof(struct qeth_hdr));
918 hdr = (struct qeth_hdr *)skb_push(new_skb,
919 sizeof(struct qeth_hdr));
920 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
921 qeth_l2_fill_header(card, hdr, new_skb, cast_type);
922 if (new_skb->ip_summed == CHECKSUM_PARTIAL)
923 qeth_l2_hdr_csum(card, hdr, new_skb);
927 elements = qeth_get_elements_no(card, new_skb, elements_needed);
929 if (data_offset >= 0)
930 kmem_cache_free(qeth_core_header_cache, hdr);
934 if (card->info.type != QETH_CARD_TYPE_IQD) {
935 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
936 sizeof(struct qeth_hdr_layer2)))
938 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
941 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
942 elements, data_offset, hd_len);
944 card->stats.tx_packets++;
945 card->stats.tx_bytes += tx_bytes;
947 dev_kfree_skb_any(skb);
950 if (data_offset >= 0)
951 kmem_cache_free(qeth_core_header_cache, hdr);
955 dev_kfree_skb_any(new_skb);
956 return NETDEV_TX_BUSY;
961 netif_wake_queue(dev);
962 if (card->options.performance_stats)
963 card->perf_stats.outbound_time += qeth_get_micros() -
964 card->perf_stats.outbound_start_time;
968 card->stats.tx_dropped++;
969 card->stats.tx_errors++;
970 if ((new_skb != skb) && new_skb)
971 dev_kfree_skb_any(new_skb);
972 dev_kfree_skb_any(skb);
973 netif_wake_queue(dev);
977 static int __qeth_l2_open(struct net_device *dev)
979 struct qeth_card *card = dev->ml_priv;
982 QETH_CARD_TEXT(card, 4, "qethopen");
983 if (card->state == CARD_STATE_UP)
985 if (card->state != CARD_STATE_SOFTSETUP)
988 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
989 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
990 QETH_CARD_TEXT(card, 4, "nomacadr");
993 card->data.state = CH_STATE_UP;
994 card->state = CARD_STATE_UP;
995 netif_start_queue(dev);
997 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
998 napi_enable(&card->napi);
999 napi_schedule(&card->napi);
1005 static int qeth_l2_open(struct net_device *dev)
1007 struct qeth_card *card = dev->ml_priv;
1009 QETH_CARD_TEXT(card, 5, "qethope_");
1010 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1011 QETH_CARD_TEXT(card, 3, "openREC");
1012 return -ERESTARTSYS;
1014 return __qeth_l2_open(dev);
1017 static int qeth_l2_stop(struct net_device *dev)
1019 struct qeth_card *card = dev->ml_priv;
1021 QETH_CARD_TEXT(card, 4, "qethstop");
1022 netif_tx_disable(dev);
1023 if (card->state == CARD_STATE_UP) {
1024 card->state = CARD_STATE_SOFTSETUP;
1025 napi_disable(&card->napi);
1030 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
1032 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1034 qeth_l2_create_device_attributes(&gdev->dev);
1035 INIT_LIST_HEAD(&card->vid_list);
1036 hash_init(card->mac_htable);
1037 card->options.layer2 = 1;
1038 card->info.hwtrap = 0;
1042 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
1044 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1046 qeth_l2_remove_device_attributes(&cgdev->dev);
1047 qeth_set_allowed_threads(card, 0, 1);
1048 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1050 if (cgdev->state == CCWGROUP_ONLINE)
1051 qeth_l2_set_offline(cgdev);
1054 unregister_netdev(card->dev);
1060 static const struct ethtool_ops qeth_l2_ethtool_ops = {
1061 .get_link = ethtool_op_get_link,
1062 .get_strings = qeth_core_get_strings,
1063 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1064 .get_sset_count = qeth_core_get_sset_count,
1065 .get_drvinfo = qeth_core_get_drvinfo,
1066 .get_settings = qeth_core_ethtool_get_settings,
1069 static const struct ethtool_ops qeth_l2_osn_ops = {
1070 .get_strings = qeth_core_get_strings,
1071 .get_ethtool_stats = qeth_core_get_ethtool_stats,
1072 .get_sset_count = qeth_core_get_sset_count,
1073 .get_drvinfo = qeth_core_get_drvinfo,
1076 static const struct net_device_ops qeth_l2_netdev_ops = {
1077 .ndo_open = qeth_l2_open,
1078 .ndo_stop = qeth_l2_stop,
1079 .ndo_get_stats = qeth_get_stats,
1080 .ndo_start_xmit = qeth_l2_hard_start_xmit,
1081 .ndo_validate_addr = eth_validate_addr,
1082 .ndo_set_rx_mode = qeth_l2_set_rx_mode,
1083 .ndo_do_ioctl = qeth_l2_do_ioctl,
1084 .ndo_set_mac_address = qeth_l2_set_mac_address,
1085 .ndo_change_mtu = qeth_change_mtu,
1086 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
1087 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
1088 .ndo_tx_timeout = qeth_tx_timeout,
1089 .ndo_fix_features = qeth_l2_fix_features,
1090 .ndo_set_features = qeth_l2_set_features
1093 static int qeth_l2_setup_netdev(struct qeth_card *card)
1095 switch (card->info.type) {
1096 case QETH_CARD_TYPE_IQD:
1097 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1100 case QETH_CARD_TYPE_OSN:
1101 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1103 card->dev->flags |= IFF_NOARP;
1106 card->dev = alloc_etherdev(0);
1112 card->dev->ml_priv = card;
1113 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
1114 card->dev->mtu = card->info.initial_mtu;
1115 card->dev->netdev_ops = &qeth_l2_netdev_ops;
1116 card->dev->ethtool_ops =
1117 (card->info.type != QETH_CARD_TYPE_OSN) ?
1118 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
1119 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1120 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1121 card->dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
1122 /* Turn on RX offloading per default */
1123 card->dev->features |= NETIF_F_RXCSUM;
1125 card->info.broadcast_capable = 1;
1126 qeth_l2_request_initial_mac(card);
1127 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1128 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1129 return register_netdev(card->dev);
1132 static int qeth_l2_start_ipassists(struct qeth_card *card)
1134 /* configure isolation level */
1135 if (qeth_set_access_ctrl_online(card, 0))
1137 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
1138 qeth_set_rx_csum(card, 1);
1139 qeth_start_ipa_tx_checksum(card);
1143 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1145 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1147 enum qeth_card_states recover_flag;
1149 mutex_lock(&card->discipline_mutex);
1150 mutex_lock(&card->conf_mutex);
1151 QETH_DBF_TEXT(SETUP, 2, "setonlin");
1152 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1154 recover_flag = card->state;
1155 rc = qeth_core_hardsetup_card(card);
1157 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1161 qeth_bridgeport_query_support(card);
1162 if (card->options.sbp.supported_funcs)
1163 dev_info(&card->gdev->dev,
1164 "The device represents a Bridge Capable Port\n");
1165 qeth_trace_features(card);
1167 if (!card->dev && qeth_l2_setup_netdev(card)) {
1172 if (card->info.type != QETH_CARD_TYPE_OSN)
1173 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1175 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1176 if (card->info.hwtrap &&
1177 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1178 card->info.hwtrap = 0;
1180 card->info.hwtrap = 0;
1182 qeth_l2_setup_bridgeport_attrs(card);
1184 card->state = CARD_STATE_HARDSETUP;
1185 memset(&card->rx, 0, sizeof(struct qeth_rx));
1186 qeth_print_status_message(card);
1189 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1191 rc = qeth_send_startlan(card);
1193 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1195 dev_warn(&card->gdev->dev,
1196 "The LAN is offline\n");
1197 card->lan_online = 0;
1203 card->lan_online = 1;
1206 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1207 (card->info.type == QETH_CARD_TYPE_OSX)) {
1208 if (qeth_l2_start_ipassists(card))
1212 if (card->info.type != QETH_CARD_TYPE_OSN &&
1213 card->info.type != QETH_CARD_TYPE_OSM)
1214 qeth_l2_process_vlans(card);
1216 netif_tx_disable(card->dev);
1218 rc = qeth_init_qdio_queues(card);
1220 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1224 card->state = CARD_STATE_SOFTSETUP;
1225 if (card->lan_online)
1226 netif_carrier_on(card->dev);
1228 netif_carrier_off(card->dev);
1230 qeth_set_allowed_threads(card, 0xffffffff, 0);
1231 if (recover_flag == CARD_STATE_RECOVER) {
1232 if (recovery_mode &&
1233 card->info.type != QETH_CARD_TYPE_OSN) {
1234 __qeth_l2_open(card->dev);
1237 dev_open(card->dev);
1240 /* this also sets saved unicast addresses */
1241 qeth_l2_set_rx_mode(card->dev);
1243 /* let user_space know that device is online */
1244 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1245 mutex_unlock(&card->conf_mutex);
1246 mutex_unlock(&card->discipline_mutex);
1250 qeth_l2_stop_card(card, 0);
1251 ccw_device_set_offline(CARD_DDEV(card));
1252 ccw_device_set_offline(CARD_WDEV(card));
1253 ccw_device_set_offline(CARD_RDEV(card));
1254 qdio_free(CARD_DDEV(card));
1255 if (recover_flag == CARD_STATE_RECOVER)
1256 card->state = CARD_STATE_RECOVER;
1258 card->state = CARD_STATE_DOWN;
1259 mutex_unlock(&card->conf_mutex);
1260 mutex_unlock(&card->discipline_mutex);
1264 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1266 return __qeth_l2_set_online(gdev, 0);
1269 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1272 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1273 int rc = 0, rc2 = 0, rc3 = 0;
1274 enum qeth_card_states recover_flag;
1276 mutex_lock(&card->discipline_mutex);
1277 mutex_lock(&card->conf_mutex);
1278 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1279 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1281 if (card->dev && netif_carrier_ok(card->dev))
1282 netif_carrier_off(card->dev);
1283 recover_flag = card->state;
1284 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1285 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1286 card->info.hwtrap = 1;
1288 qeth_l2_stop_card(card, recovery_mode);
1289 rc = ccw_device_set_offline(CARD_DDEV(card));
1290 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1291 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1293 rc = (rc2) ? rc2 : rc3;
1295 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1296 qdio_free(CARD_DDEV(card));
1297 if (recover_flag == CARD_STATE_UP)
1298 card->state = CARD_STATE_RECOVER;
1299 /* let user_space know that device is offline */
1300 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1301 mutex_unlock(&card->conf_mutex);
1302 mutex_unlock(&card->discipline_mutex);
1306 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1308 return __qeth_l2_set_offline(cgdev, 0);
1311 static int qeth_l2_recover(void *ptr)
1313 struct qeth_card *card;
1316 card = (struct qeth_card *) ptr;
1317 QETH_CARD_TEXT(card, 2, "recover1");
1318 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1320 QETH_CARD_TEXT(card, 2, "recover2");
1321 dev_warn(&card->gdev->dev,
1322 "A recovery process has been started for the device\n");
1323 qeth_set_recovery_task(card);
1324 __qeth_l2_set_offline(card->gdev, 1);
1325 rc = __qeth_l2_set_online(card->gdev, 1);
1327 dev_info(&card->gdev->dev,
1328 "Device successfully recovered!\n");
1330 qeth_close_dev(card);
1331 dev_warn(&card->gdev->dev, "The qeth device driver "
1332 "failed to recover an error on the device\n");
1334 qeth_clear_recovery_task(card);
1335 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1336 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1340 static int __init qeth_l2_init(void)
1342 pr_info("register layer 2 discipline\n");
1346 static void __exit qeth_l2_exit(void)
1348 pr_info("unregister layer 2 discipline\n");
1351 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1353 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1354 qeth_set_allowed_threads(card, 0, 1);
1355 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1356 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1357 qeth_qdio_clear_card(card, 0);
1358 qeth_clear_qdio_buffers(card);
1359 qdio_free(CARD_DDEV(card));
1362 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1364 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1367 netif_device_detach(card->dev);
1368 qeth_set_allowed_threads(card, 0, 1);
1369 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1370 if (gdev->state == CCWGROUP_OFFLINE)
1372 if (card->state == CARD_STATE_UP) {
1373 if (card->info.hwtrap)
1374 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1375 __qeth_l2_set_offline(card->gdev, 1);
1377 __qeth_l2_set_offline(card->gdev, 0);
1381 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1383 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1386 if (gdev->state == CCWGROUP_OFFLINE)
1389 if (card->state == CARD_STATE_RECOVER) {
1390 rc = __qeth_l2_set_online(card->gdev, 1);
1393 dev_close(card->dev);
1397 rc = __qeth_l2_set_online(card->gdev, 0);
1399 qeth_set_allowed_threads(card, 0xffffffff, 0);
1401 netif_device_attach(card->dev);
1403 dev_warn(&card->gdev->dev, "The qeth device driver "
1404 "failed to recover an error on the device\n");
1408 /* Returns zero if the command is successfully "consumed" */
1409 static int qeth_l2_control_event(struct qeth_card *card,
1410 struct qeth_ipa_cmd *cmd)
1412 switch (cmd->hdr.command) {
1413 case IPA_CMD_SETBRIDGEPORT_OSA:
1414 case IPA_CMD_SETBRIDGEPORT_IQD:
1415 if (cmd->data.sbp.hdr.command_code ==
1416 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1417 qeth_bridge_state_change(card, cmd);
1421 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1422 qeth_bridge_host_event(card, cmd);
1429 struct qeth_discipline qeth_l2_discipline = {
1430 .start_poll = qeth_qdio_start_poll,
1431 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1432 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1433 .recover = qeth_l2_recover,
1434 .setup = qeth_l2_probe_device,
1435 .remove = qeth_l2_remove_device,
1436 .set_online = qeth_l2_set_online,
1437 .set_offline = qeth_l2_set_offline,
1438 .shutdown = qeth_l2_shutdown,
1439 .freeze = qeth_l2_pm_suspend,
1440 .thaw = qeth_l2_pm_resume,
1441 .restore = qeth_l2_pm_resume,
1442 .control_event_handler = qeth_l2_control_event,
1444 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1446 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1447 struct qeth_cmd_buffer *iob)
1449 unsigned long flags;
1452 QETH_CARD_TEXT(card, 5, "osndctrd");
1454 wait_event(card->wait_q,
1455 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1456 qeth_prepare_control_data(card, len, iob);
1457 QETH_CARD_TEXT(card, 6, "osnoirqp");
1458 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1459 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1460 (addr_t) iob, 0, 0);
1461 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1463 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1464 "ccw_device_start rc = %i\n", rc);
1465 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1466 qeth_release_buffer(iob->channel, iob);
1467 atomic_set(&card->write.irq_pending, 0);
1468 wake_up(&card->wait_q);
1473 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1474 struct qeth_cmd_buffer *iob, int data_len)
1478 QETH_CARD_TEXT(card, 4, "osndipa");
1480 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1481 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1483 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1484 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1485 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1486 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1487 return qeth_osn_send_control_data(card, s1, iob);
1490 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1492 struct qeth_cmd_buffer *iob;
1493 struct qeth_card *card;
1498 card = dev->ml_priv;
1501 QETH_CARD_TEXT(card, 2, "osnsdmc");
1502 if (!qeth_card_hw_is_reachable(card))
1504 iob = qeth_wait_for_buffer(&card->write);
1505 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1506 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1509 EXPORT_SYMBOL(qeth_osn_assist);
1511 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1512 int (*assist_cb)(struct net_device *, void *),
1513 int (*data_cb)(struct sk_buff *))
1515 struct qeth_card *card;
1517 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1520 card = (*dev)->ml_priv;
1523 QETH_CARD_TEXT(card, 2, "osnreg");
1524 if ((assist_cb == NULL) || (data_cb == NULL))
1526 card->osn_info.assist_cb = assist_cb;
1527 card->osn_info.data_cb = data_cb;
1530 EXPORT_SYMBOL(qeth_osn_register);
1532 void qeth_osn_deregister(struct net_device *dev)
1534 struct qeth_card *card;
1538 card = dev->ml_priv;
1541 QETH_CARD_TEXT(card, 2, "osndereg");
1542 card->osn_info.assist_cb = NULL;
1543 card->osn_info.data_cb = NULL;
1546 EXPORT_SYMBOL(qeth_osn_deregister);
1548 /* SETBRIDGEPORT support, async notifications */
1550 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1553 * qeth_bridge_emit_host_event() - bridgeport address change notification
1554 * @card: qeth_card structure pointer, for udev events.
1555 * @evtype: "normal" register/unregister, or abort, or reset. For abort
1556 * and reset token and addr_lnid are unused and may be NULL.
1557 * @code: event bitmask: high order bit 0x80 value 1 means removal of an
1558 * object, 0 - addition of an object.
1559 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1560 * @token: "network token" structure identifying physical address of the port.
1561 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1563 * This function is called when registrations and deregistrations are
1564 * reported by the hardware, and also when notifications are enabled -
1565 * for all currently registered addresses.
1567 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1568 enum qeth_an_event_type evtype,
1569 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1576 case anev_reg_unreg:
1577 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1578 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1579 ? "deregister" : "register");
1580 env[i] = str[i]; i++;
1581 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1582 snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1584 env[i] = str[i]; i++;
1586 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1587 snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1589 env[i] = str[i]; i++;
1591 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1592 token->cssid, token->ssid, token->devnum);
1593 env[i] = str[i]; i++;
1594 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1595 env[i] = str[i]; i++;
1596 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1598 env[i] = str[i]; i++;
1599 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1600 env[i] = str[i]; i++;
1603 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1604 env[i] = str[i]; i++;
1607 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1608 env[i] = str[i]; i++;
1612 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1615 struct qeth_bridge_state_data {
1616 struct work_struct worker;
1617 struct qeth_card *card;
1618 struct qeth_sbp_state_change qports;
1621 static void qeth_bridge_state_change_worker(struct work_struct *work)
1623 struct qeth_bridge_state_data *data =
1624 container_of(work, struct qeth_bridge_state_data, worker);
1625 /* We are only interested in the first entry - local port */
1626 struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1627 char env_locrem[32];
1637 /* Role should not change by itself, but if it did, */
1638 /* information from the hardware is authoritative. */
1639 mutex_lock(&data->card->conf_mutex);
1640 data->card->options.sbp.role = entry->role;
1641 mutex_unlock(&data->card->conf_mutex);
1643 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1644 snprintf(env_role, sizeof(env_role), "ROLE=%s",
1645 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1646 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1647 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1649 snprintf(env_state, sizeof(env_state), "STATE=%s",
1650 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1651 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1652 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1654 kobject_uevent_env(&data->card->gdev->dev.kobj,
1659 static void qeth_bridge_state_change(struct qeth_card *card,
1660 struct qeth_ipa_cmd *cmd)
1662 struct qeth_sbp_state_change *qports =
1663 &cmd->data.sbp.data.state_change;
1664 struct qeth_bridge_state_data *data;
1667 QETH_CARD_TEXT(card, 2, "brstchng");
1668 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1669 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1672 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1673 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1676 QETH_CARD_TEXT(card, 2, "BPSalloc");
1679 INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1681 memcpy(&data->qports, qports,
1682 sizeof(struct qeth_sbp_state_change) + extrasize);
1683 queue_work(qeth_wq, &data->worker);
1686 struct qeth_bridge_host_data {
1687 struct work_struct worker;
1688 struct qeth_card *card;
1689 struct qeth_ipacmd_addr_change hostevs;
1692 static void qeth_bridge_host_event_worker(struct work_struct *work)
1694 struct qeth_bridge_host_data *data =
1695 container_of(work, struct qeth_bridge_host_data, worker);
1698 if (data->hostevs.lost_event_mask) {
1699 dev_info(&data->card->gdev->dev,
1700 "Address notification from the Bridge Port stopped %s (%s)\n",
1701 data->card->dev->name,
1702 (data->hostevs.lost_event_mask == 0x01)
1704 : (data->hostevs.lost_event_mask == 0x02)
1705 ? "Bridge port state change"
1706 : "Unknown reason");
1707 mutex_lock(&data->card->conf_mutex);
1708 data->card->options.sbp.hostnotification = 0;
1709 mutex_unlock(&data->card->conf_mutex);
1710 qeth_bridge_emit_host_event(data->card, anev_abort,
1713 for (i = 0; i < data->hostevs.num_entries; i++) {
1714 struct qeth_ipacmd_addr_change_entry *entry =
1715 &data->hostevs.entry[i];
1716 qeth_bridge_emit_host_event(data->card,
1719 &entry->token, &entry->addr_lnid);
1724 static void qeth_bridge_host_event(struct qeth_card *card,
1725 struct qeth_ipa_cmd *cmd)
1727 struct qeth_ipacmd_addr_change *hostevs =
1728 &cmd->data.addrchange;
1729 struct qeth_bridge_host_data *data;
1732 QETH_CARD_TEXT(card, 2, "brhostev");
1733 if (cmd->hdr.return_code != 0x0000) {
1734 if (cmd->hdr.return_code == 0x0010) {
1735 if (hostevs->lost_event_mask == 0x00)
1736 hostevs->lost_event_mask = 0xff;
1738 QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1739 cmd->hdr.return_code);
1743 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1744 hostevs->num_entries;
1745 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1748 QETH_CARD_TEXT(card, 2, "BPHalloc");
1751 INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1753 memcpy(&data->hostevs, hostevs,
1754 sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1755 queue_work(qeth_wq, &data->worker);
1758 /* SETBRIDGEPORT support; sending commands */
1760 struct _qeth_sbp_cbctl {
1766 enum qeth_sbp_roles *role;
1767 enum qeth_sbp_states *state;
1773 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1774 * @card: qeth_card structure pointer, for debug messages.
1775 * @cbctl: state structure with hardware return codes.
1776 * @setcmd: IPA command code
1778 * Returns negative errno-compatible error indication or 0 on success.
1780 static int qeth_bridgeport_makerc(struct qeth_card *card,
1781 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1784 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1786 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1787 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1788 switch (cbctl->cmd_rc) {
1797 case 0x000C: /* Not configured as bridge Port */
1798 rc = -ENODEV; /* maybe not the best code here? */
1799 dev_err(&card->gdev->dev,
1800 "The device is not configured as a Bridge Port\n");
1803 case 0x0014: /* Another device is Primary */
1805 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1807 dev_err(&card->gdev->dev,
1808 "The LAN already has a primary Bridge Port\n");
1810 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1812 dev_err(&card->gdev->dev,
1813 "The device is already a primary Bridge Port\n");
1820 case 0x0018: /* This device is currently Secondary */
1822 dev_err(&card->gdev->dev,
1823 "The device is already a secondary Bridge Port\n");
1826 case 0x001C: /* Limit for Secondary devices reached */
1828 dev_err(&card->gdev->dev,
1829 "The LAN cannot have more secondary Bridge Ports\n");
1832 case 0x0024: /* This device is currently Primary */
1834 dev_err(&card->gdev->dev,
1835 "The device is already a primary Bridge Port\n");
1838 case 0x0020: /* Not authorized by zManager */
1840 dev_err(&card->gdev->dev,
1841 "The device is not authorized to be a Bridge Port\n");
1847 switch (cbctl->ipa_rc) {
1848 case IPA_RC_NOTSUPP:
1851 case IPA_RC_UNSUPPORTED_COMMAND:
1859 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1860 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1865 static inline int ipa_cmd_sbp(struct qeth_card *card)
1867 return (card->info.type == QETH_CARD_TYPE_IQD) ?
1868 IPA_CMD_SETBRIDGEPORT_IQD :
1869 IPA_CMD_SETBRIDGEPORT_OSA;
1872 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1873 struct qeth_reply *reply, unsigned long data)
1875 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1876 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1877 QETH_CARD_TEXT(card, 2, "brqsupcb");
1878 cbctl->ipa_rc = cmd->hdr.return_code;
1879 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1880 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1881 cbctl->data.supported =
1882 cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1884 cbctl->data.supported = 0;
1890 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1891 * @card: qeth_card structure pointer.
1893 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1894 * strucutre: card->options.sbp.supported_funcs.
1896 static void qeth_bridgeport_query_support(struct qeth_card *card)
1898 struct qeth_cmd_buffer *iob;
1899 struct qeth_ipa_cmd *cmd;
1900 struct _qeth_sbp_cbctl cbctl;
1902 QETH_CARD_TEXT(card, 2, "brqsuppo");
1903 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1906 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1907 cmd->data.sbp.hdr.cmdlength =
1908 sizeof(struct qeth_ipacmd_sbp_hdr) +
1909 sizeof(struct qeth_sbp_query_cmds_supp);
1910 cmd->data.sbp.hdr.command_code =
1911 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1912 cmd->data.sbp.hdr.used_total = 1;
1913 cmd->data.sbp.hdr.seq_no = 1;
1914 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1916 qeth_bridgeport_makerc(card, &cbctl,
1917 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1918 /* non-zero makerc signifies failure, and produce messages */
1919 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1922 card->options.sbp.supported_funcs = cbctl.data.supported;
1925 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1926 struct qeth_reply *reply, unsigned long data)
1928 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1929 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1930 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1932 QETH_CARD_TEXT(card, 2, "brqprtcb");
1933 cbctl->ipa_rc = cmd->hdr.return_code;
1934 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1935 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1937 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1938 cbctl->cmd_rc = 0xffff;
1939 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1942 /* first entry contains the state of the local port */
1943 if (qports->num_entries > 0) {
1944 if (cbctl->data.qports.role)
1945 *cbctl->data.qports.role = qports->entry[0].role;
1946 if (cbctl->data.qports.state)
1947 *cbctl->data.qports.state = qports->entry[0].state;
1953 * qeth_bridgeport_query_ports() - query local bridgeport status.
1954 * @card: qeth_card structure pointer.
1955 * @role: Role of the port: 0-none, 1-primary, 2-secondary.
1956 * @state: State of the port: 0-inactive, 1-standby, 2-active.
1958 * Returns negative errno-compatible error indication or 0 on success.
1960 * 'role' and 'state' are not updated in case of hardware operation failure.
1962 int qeth_bridgeport_query_ports(struct qeth_card *card,
1963 enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1966 struct qeth_cmd_buffer *iob;
1967 struct qeth_ipa_cmd *cmd;
1968 struct _qeth_sbp_cbctl cbctl = {
1977 QETH_CARD_TEXT(card, 2, "brqports");
1978 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1980 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1983 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1984 cmd->data.sbp.hdr.cmdlength =
1985 sizeof(struct qeth_ipacmd_sbp_hdr);
1986 cmd->data.sbp.hdr.command_code =
1987 IPA_SBP_QUERY_BRIDGE_PORTS;
1988 cmd->data.sbp.hdr.used_total = 1;
1989 cmd->data.sbp.hdr.seq_no = 1;
1990 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1994 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1996 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1998 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1999 struct qeth_reply *reply, unsigned long data)
2001 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
2002 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
2003 QETH_CARD_TEXT(card, 2, "brsetrcb");
2004 cbctl->ipa_rc = cmd->hdr.return_code;
2005 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
2010 * qeth_bridgeport_setrole() - Assign primary role to the port.
2011 * @card: qeth_card structure pointer.
2012 * @role: Role to assign.
2014 * Returns negative errno-compatible error indication or 0 on success.
2016 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
2020 struct qeth_cmd_buffer *iob;
2021 struct qeth_ipa_cmd *cmd;
2022 struct _qeth_sbp_cbctl cbctl;
2023 enum qeth_ipa_sbp_cmd setcmd;
2025 QETH_CARD_TEXT(card, 2, "brsetrol");
2027 case QETH_SBP_ROLE_NONE:
2028 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
2029 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2030 sizeof(struct qeth_sbp_reset_role);
2032 case QETH_SBP_ROLE_PRIMARY:
2033 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
2034 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2035 sizeof(struct qeth_sbp_set_primary);
2037 case QETH_SBP_ROLE_SECONDARY:
2038 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
2039 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
2040 sizeof(struct qeth_sbp_set_secondary);
2045 if (!(card->options.sbp.supported_funcs & setcmd))
2047 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
2050 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2051 cmd->data.sbp.hdr.cmdlength = cmdlength;
2052 cmd->data.sbp.hdr.command_code = setcmd;
2053 cmd->data.sbp.hdr.used_total = 1;
2054 cmd->data.sbp.hdr.seq_no = 1;
2055 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
2059 return qeth_bridgeport_makerc(card, &cbctl, setcmd);
2063 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
2064 * @card: qeth_card structure pointer, for debug messages.
2066 * Returns negative errno-compatible error indication or 0 on success.
2068 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2081 dev_err(&card->gdev->dev,
2082 "Setting address notification failed\n");
2094 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2095 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2100 static void qeth_bridgeport_an_set_cb(void *priv,
2101 enum qdio_brinfo_entry_type type, void *entry)
2103 struct qeth_card *card = (struct qeth_card *)priv;
2104 struct qdio_brinfo_entry_l2 *l2entry;
2107 if (type != l2_addr_lnid) {
2112 l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2113 code = IPA_ADDR_CHANGE_CODE_MACADDR;
2114 if (l2entry->addr_lnid.lnid)
2115 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2116 qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2117 (struct net_if_token *)&l2entry->nit,
2118 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2122 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2123 * @card: qeth_card structure pointer.
2124 * @enable: 0 - disable, non-zero - enable notifications
2126 * Returns negative errno-compatible error indication or 0 on success.
2128 * On enable, emits a series of address notifications udev events for all
2129 * currently registered hosts.
2131 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2135 struct ccw_device *ddev;
2136 struct subchannel_id schid;
2140 if (!card->options.sbp.supported_funcs)
2142 ddev = CARD_DDEV(card);
2143 ccw_device_get_schid(ddev, &schid);
2146 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2147 rc = qdio_pnso_brinfo(schid, 1, &response,
2148 qeth_bridgeport_an_set_cb, card);
2150 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2151 return qeth_anset_makerc(card, rc, response);
2153 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2155 module_init(qeth_l2_init);
2156 module_exit(qeth_l2_exit);
2157 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2158 MODULE_DESCRIPTION("qeth layer 2 discipline");
2159 MODULE_LICENSE("GPL");