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>
23 #include "qeth_core.h"
25 static int qeth_l2_set_offline(struct ccwgroup_device *);
26 static int qeth_l2_stop(struct net_device *);
27 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
28 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
30 int (*reply_cb) (struct qeth_card *,
33 static void qeth_l2_set_multicast_list(struct net_device *);
34 static int qeth_l2_recover(void *);
36 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
38 struct qeth_card *card = dev->ml_priv;
39 struct mii_ioctl_data *mii_data;
45 if ((card->state != CARD_STATE_UP) &&
46 (card->state != CARD_STATE_SOFTSETUP))
49 if (card->info.type == QETH_CARD_TYPE_OSN)
53 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
54 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
56 case SIOC_QETH_GET_CARD_TYPE:
57 if ((card->info.type == QETH_CARD_TYPE_OSD ||
58 card->info.type == QETH_CARD_TYPE_OSM ||
59 card->info.type == QETH_CARD_TYPE_OSX) &&
65 mii_data = if_mii(rq);
69 mii_data = if_mii(rq);
70 if (mii_data->phy_id != 0)
73 mii_data->val_out = qeth_mdio_read(dev,
74 mii_data->phy_id, mii_data->reg_num);
76 case SIOC_QETH_QUERY_OAT:
77 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
83 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
87 static int qeth_l2_verify_dev(struct net_device *dev)
89 struct qeth_card *card;
93 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
94 list_for_each_entry(card, &qeth_core_card_list.list, list) {
95 if (card->dev == dev) {
100 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
105 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
107 struct qeth_card *card;
108 struct net_device *ndev;
111 struct ccw_dev_id read_devid;
114 memcpy(&temp_dev_no, read_dev_no, 2);
115 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
116 list_for_each_entry(card, &qeth_core_card_list.list, list) {
117 ccw_device_get_id(CARD_RDEV(card), &read_devid);
118 if (read_devid.devno == temp_dev_no) {
123 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
127 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
128 struct qeth_reply *reply,
131 struct qeth_ipa_cmd *cmd;
134 QETH_CARD_TEXT(card, 2, "L2Sgmacb");
135 cmd = (struct qeth_ipa_cmd *) data;
136 mac = &cmd->data.setdelmac.mac[0];
137 /* MAC already registered, needed in couple/uncouple case */
138 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
139 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
140 mac, QETH_CARD_IFNAME(card));
141 cmd->hdr.return_code = 0;
143 if (cmd->hdr.return_code)
144 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
145 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
149 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
151 QETH_CARD_TEXT(card, 2, "L2Sgmac");
152 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
153 qeth_l2_send_setgroupmac_cb);
156 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
157 struct qeth_reply *reply,
160 struct qeth_ipa_cmd *cmd;
163 QETH_CARD_TEXT(card, 2, "L2Dgmacb");
164 cmd = (struct qeth_ipa_cmd *) data;
165 mac = &cmd->data.setdelmac.mac[0];
166 if (cmd->hdr.return_code)
167 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
168 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
172 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
174 QETH_CARD_TEXT(card, 2, "L2Dgmac");
175 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
176 qeth_l2_send_delgroupmac_cb);
179 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
181 struct qeth_mc_mac *mc;
184 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
189 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
190 mc->mc_addrlen = OSA_ADDR_LEN;
194 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
197 rc = qeth_l2_send_setgroupmac(card, mac);
201 list_add_tail(&mc->list, &card->mc_list);
206 static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
208 struct qeth_mc_mac *mc, *tmp;
210 spin_lock_bh(&card->mclock);
211 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
214 qeth_l2_send_setdelmac(card, mc->mc_addr,
215 IPA_CMD_DELVMAC, NULL);
217 qeth_l2_send_delgroupmac(card, mc->mc_addr);
222 spin_unlock_bh(&card->mclock);
225 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
228 if (card->info.type == QETH_CARD_TYPE_OSN)
230 if (is_broadcast_ether_addr(skb->data))
231 return RTN_BROADCAST;
232 if (is_multicast_ether_addr(skb->data))
233 return RTN_MULTICAST;
237 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
238 struct sk_buff *skb, int ipv, int cast_type)
240 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
242 memset(hdr, 0, sizeof(struct qeth_hdr));
243 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
245 /* set byte byte 3 to casting flags */
246 if (cast_type == RTN_MULTICAST)
247 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
248 else if (cast_type == RTN_BROADCAST)
249 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
251 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
253 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
254 /* VSWITCH relies on the VLAN
255 * information to be present in
257 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
258 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
259 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
263 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
264 struct qeth_reply *reply, unsigned long data)
266 struct qeth_ipa_cmd *cmd;
268 QETH_CARD_TEXT(card, 2, "L2sdvcb");
269 cmd = (struct qeth_ipa_cmd *) data;
270 if (cmd->hdr.return_code) {
271 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
272 "Continuing\n", cmd->data.setdelvlan.vlan_id,
273 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
274 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
275 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
280 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
281 enum qeth_ipa_cmds ipacmd)
283 struct qeth_ipa_cmd *cmd;
284 struct qeth_cmd_buffer *iob;
286 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
287 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
288 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
289 cmd->data.setdelvlan.vlan_id = i;
290 return qeth_send_ipa_cmd(card, iob,
291 qeth_l2_send_setdelvlan_cb, NULL);
294 static void qeth_l2_process_vlans(struct qeth_card *card)
296 struct qeth_vlan_vid *id;
297 QETH_CARD_TEXT(card, 3, "L2prcvln");
298 spin_lock_bh(&card->vlanlock);
299 list_for_each_entry(id, &card->vid_list, list) {
300 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
302 spin_unlock_bh(&card->vlanlock);
305 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
307 struct qeth_card *card = dev->ml_priv;
308 struct qeth_vlan_vid *id;
310 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
313 if (card->info.type == QETH_CARD_TYPE_OSM) {
314 QETH_CARD_TEXT(card, 3, "aidOSM");
317 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
318 QETH_CARD_TEXT(card, 3, "aidREC");
321 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
324 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
325 spin_lock_bh(&card->vlanlock);
326 list_add_tail(&id->list, &card->vid_list);
327 spin_unlock_bh(&card->vlanlock);
334 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
336 struct qeth_vlan_vid *id, *tmpid = NULL;
337 struct qeth_card *card = dev->ml_priv;
339 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
340 if (card->info.type == QETH_CARD_TYPE_OSM) {
341 QETH_CARD_TEXT(card, 3, "kidOSM");
344 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
345 QETH_CARD_TEXT(card, 3, "kidREC");
348 spin_lock_bh(&card->vlanlock);
349 list_for_each_entry(id, &card->vid_list, list) {
350 if (id->vid == vid) {
356 spin_unlock_bh(&card->vlanlock);
358 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
361 qeth_l2_set_multicast_list(card->dev);
365 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
369 QETH_DBF_TEXT(SETUP , 2, "stopcard");
370 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
372 qeth_set_allowed_threads(card, 0, 1);
373 if (card->read.state == CH_STATE_UP &&
374 card->write.state == CH_STATE_UP &&
375 (card->state == CARD_STATE_UP)) {
377 card->info.type != QETH_CARD_TYPE_OSN) {
378 qeth_l2_stop(card->dev);
381 dev_close(card->dev);
384 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
385 card->state = CARD_STATE_SOFTSETUP;
387 if (card->state == CARD_STATE_SOFTSETUP) {
388 qeth_l2_del_all_mc(card, 0);
389 qeth_clear_ipacmd_list(card);
390 card->state = CARD_STATE_HARDSETUP;
392 if (card->state == CARD_STATE_HARDSETUP) {
393 qeth_qdio_clear_card(card, 0);
394 qeth_clear_qdio_buffers(card);
395 qeth_clear_working_pool_list(card);
396 card->state = CARD_STATE_DOWN;
398 if (card->state == CARD_STATE_DOWN) {
399 qeth_clear_cmd_buffers(&card->read);
400 qeth_clear_cmd_buffers(&card->write);
405 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
406 int budget, int *done)
410 struct qeth_hdr *hdr;
414 WARN_ON_ONCE(!budget);
416 skb = qeth_core_get_next_skb(card,
417 &card->qdio.in_q->bufs[card->rx.b_index],
418 &card->rx.b_element, &card->rx.e_offset, &hdr);
423 skb->dev = card->dev;
424 switch (hdr->hdr.l2.id) {
425 case QETH_HEADER_TYPE_LAYER2:
426 skb->pkt_type = PACKET_HOST;
427 skb->protocol = eth_type_trans(skb, skb->dev);
428 skb->ip_summed = CHECKSUM_NONE;
429 if (skb->protocol == htons(ETH_P_802_2))
430 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
432 netif_receive_skb(skb);
434 case QETH_HEADER_TYPE_OSN:
435 if (card->info.type == QETH_CARD_TYPE_OSN) {
436 skb_push(skb, sizeof(struct qeth_hdr));
437 skb_copy_to_linear_data(skb, hdr,
438 sizeof(struct qeth_hdr));
440 card->osn_info.data_cb(skb);
445 dev_kfree_skb_any(skb);
446 QETH_CARD_TEXT(card, 3, "inbunkno");
447 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
452 card->stats.rx_packets++;
453 card->stats.rx_bytes += len;
458 static int qeth_l2_poll(struct napi_struct *napi, int budget)
460 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
462 struct qeth_qdio_buffer *buffer;
464 int new_budget = budget;
466 if (card->options.performance_stats) {
467 card->perf_stats.inbound_cnt++;
468 card->perf_stats.inbound_start_time = qeth_get_micros();
472 if (!card->rx.b_count) {
473 card->rx.qdio_err = 0;
474 card->rx.b_count = qdio_get_next_buffers(
475 card->data.ccwdev, 0, &card->rx.b_index,
477 if (card->rx.b_count <= 0) {
478 card->rx.b_count = 0;
482 &card->qdio.in_q->bufs[card->rx.b_index]
484 card->rx.e_offset = 0;
487 while (card->rx.b_count) {
488 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
489 if (!(card->rx.qdio_err &&
490 qeth_check_qdio_errors(card, buffer->buffer,
491 card->rx.qdio_err, "qinerr")))
492 work_done += qeth_l2_process_inbound_buffer(
493 card, new_budget, &done);
498 if (card->options.performance_stats)
499 card->perf_stats.bufs_rec++;
500 qeth_put_buffer_pool_entry(card,
502 qeth_queue_input_buffer(card, card->rx.b_index);
504 if (card->rx.b_count) {
506 (card->rx.b_index + 1) %
507 QDIO_MAX_BUFFERS_PER_Q;
510 ->bufs[card->rx.b_index]
512 card->rx.e_offset = 0;
516 if (work_done >= budget)
519 new_budget = budget - work_done;
524 if (qdio_start_irq(card->data.ccwdev, 0))
525 napi_schedule(&card->napi);
527 if (card->options.performance_stats)
528 card->perf_stats.inbound_time += qeth_get_micros() -
529 card->perf_stats.inbound_start_time;
533 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
534 enum qeth_ipa_cmds ipacmd,
535 int (*reply_cb) (struct qeth_card *,
539 struct qeth_ipa_cmd *cmd;
540 struct qeth_cmd_buffer *iob;
542 QETH_CARD_TEXT(card, 2, "L2sdmac");
543 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
544 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
545 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
546 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
547 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
550 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
551 struct qeth_reply *reply,
554 struct qeth_ipa_cmd *cmd;
556 QETH_CARD_TEXT(card, 2, "L2Smaccb");
557 cmd = (struct qeth_ipa_cmd *) data;
558 if (cmd->hdr.return_code) {
559 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
560 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
561 switch (cmd->hdr.return_code) {
562 case IPA_RC_L2_DUP_MAC:
563 case IPA_RC_L2_DUP_LAYER3_MAC:
564 dev_warn(&card->gdev->dev,
565 "MAC address %pM already exists\n",
566 cmd->data.setdelmac.mac);
568 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
569 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
570 dev_warn(&card->gdev->dev,
571 "MAC address %pM is not authorized\n",
572 cmd->data.setdelmac.mac);
578 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
579 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
581 dev_info(&card->gdev->dev,
582 "MAC address %pM successfully registered on device %s\n",
583 card->dev->dev_addr, card->dev->name);
588 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
590 QETH_CARD_TEXT(card, 2, "L2Setmac");
591 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
592 qeth_l2_send_setmac_cb);
595 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
596 struct qeth_reply *reply,
599 struct qeth_ipa_cmd *cmd;
601 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
602 cmd = (struct qeth_ipa_cmd *) data;
603 if (cmd->hdr.return_code) {
604 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
607 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
612 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
614 QETH_CARD_TEXT(card, 2, "L2Delmac");
615 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
617 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
618 qeth_l2_send_delmac_cb);
621 static int qeth_l2_request_initial_mac(struct qeth_card *card)
624 char vendor_pre[] = {0x02, 0x00, 0x00};
626 QETH_DBF_TEXT(SETUP, 2, "doL2init");
627 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
629 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
630 rc = qeth_query_setadapterparms(card);
632 QETH_DBF_MESSAGE(2, "could not query adapter "
633 "parameters on device %s: x%x\n",
634 CARD_BUS_ID(card), rc);
638 if (card->info.type == QETH_CARD_TYPE_IQD ||
639 card->info.type == QETH_CARD_TYPE_OSM ||
640 card->info.type == QETH_CARD_TYPE_OSX ||
641 card->info.guestlan) {
642 rc = qeth_setadpparms_change_macaddr(card);
644 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
645 "device %s: x%x\n", CARD_BUS_ID(card), rc);
646 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
649 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
651 eth_random_addr(card->dev->dev_addr);
652 memcpy(card->dev->dev_addr, vendor_pre, 3);
657 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
659 struct sockaddr *addr = p;
660 struct qeth_card *card = dev->ml_priv;
663 QETH_CARD_TEXT(card, 3, "setmac");
665 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
666 QETH_CARD_TEXT(card, 3, "setmcINV");
670 if (card->info.type == QETH_CARD_TYPE_OSN ||
671 card->info.type == QETH_CARD_TYPE_OSM ||
672 card->info.type == QETH_CARD_TYPE_OSX) {
673 QETH_CARD_TEXT(card, 3, "setmcTYP");
676 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
677 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
678 QETH_CARD_TEXT(card, 3, "setmcREC");
681 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
682 if (!rc || (rc == IPA_RC_L2_MAC_NOT_FOUND))
683 rc = qeth_l2_send_setmac(card, addr->sa_data);
684 return rc ? -EINVAL : 0;
687 static void qeth_l2_set_multicast_list(struct net_device *dev)
689 struct qeth_card *card = dev->ml_priv;
690 struct netdev_hw_addr *ha;
692 if (card->info.type == QETH_CARD_TYPE_OSN)
695 QETH_CARD_TEXT(card, 3, "setmulti");
696 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
697 (card->state != CARD_STATE_UP))
699 qeth_l2_del_all_mc(card, 1);
700 spin_lock_bh(&card->mclock);
701 netdev_for_each_mc_addr(ha, dev)
702 qeth_l2_add_mc(card, ha->addr, 0);
704 netdev_for_each_uc_addr(ha, dev)
705 qeth_l2_add_mc(card, ha->addr, 1);
707 spin_unlock_bh(&card->mclock);
708 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
710 qeth_setadp_promisc_mode(card);
713 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
716 struct qeth_hdr *hdr = NULL;
718 struct qeth_card *card = dev->ml_priv;
719 struct sk_buff *new_skb = skb;
720 int ipv = qeth_get_ip_version(skb);
721 int cast_type = qeth_l2_get_cast_type(card, skb);
722 struct qeth_qdio_out_q *queue = card->qdio.out_qs
723 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
724 int tx_bytes = skb->len;
725 int data_offset = -1;
726 int elements_needed = 0;
729 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
730 card->stats.tx_carrier_errors++;
734 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
735 (skb->protocol == htons(ETH_P_IPV6)))
738 if (card->options.performance_stats) {
739 card->perf_stats.outbound_cnt++;
740 card->perf_stats.outbound_start_time = qeth_get_micros();
742 netif_stop_queue(dev);
744 if (card->info.type == QETH_CARD_TYPE_OSN)
745 hdr = (struct qeth_hdr *)skb->data;
747 if (card->info.type == QETH_CARD_TYPE_IQD) {
749 data_offset = ETH_HLEN;
751 hdr = kmem_cache_alloc(qeth_core_header_cache,
756 skb_reset_mac_header(new_skb);
757 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
758 hdr->hdr.l2.pkt_length = new_skb->len;
759 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
760 skb_mac_header(new_skb), ETH_HLEN);
762 /* create a clone with writeable headroom */
763 new_skb = skb_realloc_headroom(skb,
764 sizeof(struct qeth_hdr));
767 hdr = (struct qeth_hdr *)skb_push(new_skb,
768 sizeof(struct qeth_hdr));
769 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
770 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
774 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
777 if (data_offset >= 0)
778 kmem_cache_free(qeth_core_header_cache, hdr);
782 if (card->info.type != QETH_CARD_TYPE_IQD) {
783 if (qeth_hdr_chk_and_bounce(new_skb,
784 sizeof(struct qeth_hdr_layer2)))
786 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
789 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
790 elements, data_offset, hd_len);
792 card->stats.tx_packets++;
793 card->stats.tx_bytes += tx_bytes;
795 dev_kfree_skb_any(skb);
798 if (data_offset >= 0)
799 kmem_cache_free(qeth_core_header_cache, hdr);
803 dev_kfree_skb_any(new_skb);
804 return NETDEV_TX_BUSY;
809 netif_wake_queue(dev);
810 if (card->options.performance_stats)
811 card->perf_stats.outbound_time += qeth_get_micros() -
812 card->perf_stats.outbound_start_time;
816 card->stats.tx_dropped++;
817 card->stats.tx_errors++;
818 if ((new_skb != skb) && new_skb)
819 dev_kfree_skb_any(new_skb);
820 dev_kfree_skb_any(skb);
821 netif_wake_queue(dev);
825 static int __qeth_l2_open(struct net_device *dev)
827 struct qeth_card *card = dev->ml_priv;
830 QETH_CARD_TEXT(card, 4, "qethopen");
831 if (card->state == CARD_STATE_UP)
833 if (card->state != CARD_STATE_SOFTSETUP)
836 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
837 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
838 QETH_CARD_TEXT(card, 4, "nomacadr");
841 card->data.state = CH_STATE_UP;
842 card->state = CARD_STATE_UP;
843 netif_start_queue(dev);
845 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
846 napi_enable(&card->napi);
847 napi_schedule(&card->napi);
853 static int qeth_l2_open(struct net_device *dev)
855 struct qeth_card *card = dev->ml_priv;
857 QETH_CARD_TEXT(card, 5, "qethope_");
858 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
859 QETH_CARD_TEXT(card, 3, "openREC");
862 return __qeth_l2_open(dev);
865 static int qeth_l2_stop(struct net_device *dev)
867 struct qeth_card *card = dev->ml_priv;
869 QETH_CARD_TEXT(card, 4, "qethstop");
870 netif_tx_disable(dev);
871 if (card->state == CARD_STATE_UP) {
872 card->state = CARD_STATE_SOFTSETUP;
873 napi_disable(&card->napi);
878 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
880 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
882 INIT_LIST_HEAD(&card->vid_list);
883 INIT_LIST_HEAD(&card->mc_list);
884 card->options.layer2 = 1;
885 card->info.hwtrap = 0;
889 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
891 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
893 qeth_set_allowed_threads(card, 0, 1);
894 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
896 if (cgdev->state == CCWGROUP_ONLINE)
897 qeth_l2_set_offline(cgdev);
900 unregister_netdev(card->dev);
906 static const struct ethtool_ops qeth_l2_ethtool_ops = {
907 .get_link = ethtool_op_get_link,
908 .get_strings = qeth_core_get_strings,
909 .get_ethtool_stats = qeth_core_get_ethtool_stats,
910 .get_sset_count = qeth_core_get_sset_count,
911 .get_drvinfo = qeth_core_get_drvinfo,
912 .get_settings = qeth_core_ethtool_get_settings,
915 static const struct ethtool_ops qeth_l2_osn_ops = {
916 .get_strings = qeth_core_get_strings,
917 .get_ethtool_stats = qeth_core_get_ethtool_stats,
918 .get_sset_count = qeth_core_get_sset_count,
919 .get_drvinfo = qeth_core_get_drvinfo,
922 static const struct net_device_ops qeth_l2_netdev_ops = {
923 .ndo_open = qeth_l2_open,
924 .ndo_stop = qeth_l2_stop,
925 .ndo_get_stats = qeth_get_stats,
926 .ndo_start_xmit = qeth_l2_hard_start_xmit,
927 .ndo_validate_addr = eth_validate_addr,
928 .ndo_set_rx_mode = qeth_l2_set_multicast_list,
929 .ndo_do_ioctl = qeth_l2_do_ioctl,
930 .ndo_set_mac_address = qeth_l2_set_mac_address,
931 .ndo_change_mtu = qeth_change_mtu,
932 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
933 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
934 .ndo_tx_timeout = qeth_tx_timeout,
937 static int qeth_l2_setup_netdev(struct qeth_card *card)
939 switch (card->info.type) {
940 case QETH_CARD_TYPE_IQD:
941 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
943 case QETH_CARD_TYPE_OSN:
944 card->dev = alloc_netdev(0, "osn%d", ether_setup);
945 card->dev->flags |= IFF_NOARP;
948 card->dev = alloc_etherdev(0);
954 card->dev->ml_priv = card;
955 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
956 card->dev->mtu = card->info.initial_mtu;
957 card->dev->netdev_ops = &qeth_l2_netdev_ops;
958 if (card->info.type != QETH_CARD_TYPE_OSN)
959 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
961 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
962 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
963 card->info.broadcast_capable = 1;
964 qeth_l2_request_initial_mac(card);
965 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
966 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
967 return register_netdev(card->dev);
970 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
972 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
974 enum qeth_card_states recover_flag;
976 mutex_lock(&card->discipline_mutex);
977 mutex_lock(&card->conf_mutex);
978 QETH_DBF_TEXT(SETUP, 2, "setonlin");
979 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
981 recover_flag = card->state;
982 rc = qeth_core_hardsetup_card(card);
984 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
988 qeth_trace_features(card);
990 if (!card->dev && qeth_l2_setup_netdev(card)) {
995 if (card->info.type != QETH_CARD_TYPE_OSN)
996 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
998 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
999 if (card->info.hwtrap &&
1000 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1001 card->info.hwtrap = 0;
1003 card->info.hwtrap = 0;
1005 card->state = CARD_STATE_HARDSETUP;
1006 memset(&card->rx, 0, sizeof(struct qeth_rx));
1007 qeth_print_status_message(card);
1010 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1012 rc = qeth_send_startlan(card);
1014 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1016 dev_warn(&card->gdev->dev,
1017 "The LAN is offline\n");
1018 card->lan_online = 0;
1024 card->lan_online = 1;
1027 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1028 (card->info.type == QETH_CARD_TYPE_OSX)) {
1029 /* configure isolation level */
1030 rc = qeth_set_access_ctrl_online(card, 0);
1037 if (card->info.type != QETH_CARD_TYPE_OSN &&
1038 card->info.type != QETH_CARD_TYPE_OSM)
1039 qeth_l2_process_vlans(card);
1041 netif_tx_disable(card->dev);
1043 rc = qeth_init_qdio_queues(card);
1045 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1049 card->state = CARD_STATE_SOFTSETUP;
1050 if (card->lan_online)
1051 netif_carrier_on(card->dev);
1053 netif_carrier_off(card->dev);
1055 qeth_set_allowed_threads(card, 0xffffffff, 0);
1056 if (recover_flag == CARD_STATE_RECOVER) {
1057 if (recovery_mode &&
1058 card->info.type != QETH_CARD_TYPE_OSN) {
1059 __qeth_l2_open(card->dev);
1062 dev_open(card->dev);
1065 /* this also sets saved unicast addresses */
1066 qeth_l2_set_multicast_list(card->dev);
1068 /* let user_space know that device is online */
1069 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1070 mutex_unlock(&card->conf_mutex);
1071 mutex_unlock(&card->discipline_mutex);
1075 qeth_l2_stop_card(card, 0);
1076 ccw_device_set_offline(CARD_DDEV(card));
1077 ccw_device_set_offline(CARD_WDEV(card));
1078 ccw_device_set_offline(CARD_RDEV(card));
1079 if (recover_flag == CARD_STATE_RECOVER)
1080 card->state = CARD_STATE_RECOVER;
1082 card->state = CARD_STATE_DOWN;
1083 mutex_unlock(&card->conf_mutex);
1084 mutex_unlock(&card->discipline_mutex);
1088 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1090 return __qeth_l2_set_online(gdev, 0);
1093 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1096 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1097 int rc = 0, rc2 = 0, rc3 = 0;
1098 enum qeth_card_states recover_flag;
1100 mutex_lock(&card->discipline_mutex);
1101 mutex_lock(&card->conf_mutex);
1102 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1103 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1105 if (card->dev && netif_carrier_ok(card->dev))
1106 netif_carrier_off(card->dev);
1107 recover_flag = card->state;
1108 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1109 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1110 card->info.hwtrap = 1;
1112 qeth_l2_stop_card(card, recovery_mode);
1113 rc = ccw_device_set_offline(CARD_DDEV(card));
1114 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1115 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1117 rc = (rc2) ? rc2 : rc3;
1119 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1120 if (recover_flag == CARD_STATE_UP)
1121 card->state = CARD_STATE_RECOVER;
1122 /* let user_space know that device is offline */
1123 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1124 mutex_unlock(&card->conf_mutex);
1125 mutex_unlock(&card->discipline_mutex);
1129 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1131 return __qeth_l2_set_offline(cgdev, 0);
1134 static int qeth_l2_recover(void *ptr)
1136 struct qeth_card *card;
1139 card = (struct qeth_card *) ptr;
1140 QETH_CARD_TEXT(card, 2, "recover1");
1141 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1143 QETH_CARD_TEXT(card, 2, "recover2");
1144 dev_warn(&card->gdev->dev,
1145 "A recovery process has been started for the device\n");
1146 __qeth_l2_set_offline(card->gdev, 1);
1147 rc = __qeth_l2_set_online(card->gdev, 1);
1149 dev_info(&card->gdev->dev,
1150 "Device successfully recovered!\n");
1152 qeth_close_dev(card);
1153 dev_warn(&card->gdev->dev, "The qeth device driver "
1154 "failed to recover an error on the device\n");
1156 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1157 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1161 static int __init qeth_l2_init(void)
1163 pr_info("register layer 2 discipline\n");
1167 static void __exit qeth_l2_exit(void)
1169 pr_info("unregister layer 2 discipline\n");
1172 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1174 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1175 qeth_set_allowed_threads(card, 0, 1);
1176 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1177 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1178 qeth_qdio_clear_card(card, 0);
1179 qeth_clear_qdio_buffers(card);
1182 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1184 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1187 netif_device_detach(card->dev);
1188 qeth_set_allowed_threads(card, 0, 1);
1189 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1190 if (gdev->state == CCWGROUP_OFFLINE)
1192 if (card->state == CARD_STATE_UP) {
1193 if (card->info.hwtrap)
1194 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1195 __qeth_l2_set_offline(card->gdev, 1);
1197 __qeth_l2_set_offline(card->gdev, 0);
1201 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1203 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1206 if (gdev->state == CCWGROUP_OFFLINE)
1209 if (card->state == CARD_STATE_RECOVER) {
1210 rc = __qeth_l2_set_online(card->gdev, 1);
1213 dev_close(card->dev);
1217 rc = __qeth_l2_set_online(card->gdev, 0);
1219 qeth_set_allowed_threads(card, 0xffffffff, 0);
1221 netif_device_attach(card->dev);
1223 dev_warn(&card->gdev->dev, "The qeth device driver "
1224 "failed to recover an error on the device\n");
1228 struct qeth_discipline qeth_l2_discipline = {
1229 .start_poll = qeth_qdio_start_poll,
1230 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1231 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1232 .recover = qeth_l2_recover,
1233 .setup = qeth_l2_probe_device,
1234 .remove = qeth_l2_remove_device,
1235 .set_online = qeth_l2_set_online,
1236 .set_offline = qeth_l2_set_offline,
1237 .shutdown = qeth_l2_shutdown,
1238 .freeze = qeth_l2_pm_suspend,
1239 .thaw = qeth_l2_pm_resume,
1240 .restore = qeth_l2_pm_resume,
1242 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1244 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1245 struct qeth_cmd_buffer *iob)
1247 unsigned long flags;
1250 QETH_CARD_TEXT(card, 5, "osndctrd");
1252 wait_event(card->wait_q,
1253 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1254 qeth_prepare_control_data(card, len, iob);
1255 QETH_CARD_TEXT(card, 6, "osnoirqp");
1256 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1257 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1258 (addr_t) iob, 0, 0);
1259 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1261 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1262 "ccw_device_start rc = %i\n", rc);
1263 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1264 qeth_release_buffer(iob->channel, iob);
1265 atomic_set(&card->write.irq_pending, 0);
1266 wake_up(&card->wait_q);
1271 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1272 struct qeth_cmd_buffer *iob, int data_len)
1276 QETH_CARD_TEXT(card, 4, "osndipa");
1278 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1279 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1281 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1282 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1283 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1284 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1285 return qeth_osn_send_control_data(card, s1, iob);
1288 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1290 struct qeth_cmd_buffer *iob;
1291 struct qeth_card *card;
1296 card = dev->ml_priv;
1299 QETH_CARD_TEXT(card, 2, "osnsdmc");
1300 if ((card->state != CARD_STATE_UP) &&
1301 (card->state != CARD_STATE_SOFTSETUP))
1303 iob = qeth_wait_for_buffer(&card->write);
1304 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1305 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1308 EXPORT_SYMBOL(qeth_osn_assist);
1310 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1311 int (*assist_cb)(struct net_device *, void *),
1312 int (*data_cb)(struct sk_buff *))
1314 struct qeth_card *card;
1316 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1319 card = (*dev)->ml_priv;
1322 QETH_CARD_TEXT(card, 2, "osnreg");
1323 if ((assist_cb == NULL) || (data_cb == NULL))
1325 card->osn_info.assist_cb = assist_cb;
1326 card->osn_info.data_cb = data_cb;
1329 EXPORT_SYMBOL(qeth_osn_register);
1331 void qeth_osn_deregister(struct net_device *dev)
1333 struct qeth_card *card;
1337 card = dev->ml_priv;
1340 QETH_CARD_TEXT(card, 2, "osndereg");
1341 card->osn_info.assist_cb = NULL;
1342 card->osn_info.data_cb = NULL;
1345 EXPORT_SYMBOL(qeth_osn_deregister);
1347 module_init(qeth_l2_init);
1348 module_exit(qeth_l2_exit);
1349 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1350 MODULE_DESCRIPTION("qeth layer 2 discipline");
1351 MODULE_LICENSE("GPL");