2 * drivers/s390/net/qeth_l2_main.c
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
11 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/slab.h>
20 #include <linux/etherdevice.h>
21 #include <linux/mii.h>
23 #include <linux/list.h>
25 #include "qeth_core.h"
27 static int qeth_l2_set_offline(struct ccwgroup_device *);
28 static int qeth_l2_stop(struct net_device *);
29 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
30 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
32 int (*reply_cb) (struct qeth_card *,
35 static void qeth_l2_set_multicast_list(struct net_device *);
36 static int qeth_l2_recover(void *);
38 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
40 struct qeth_card *card = dev->ml_priv;
41 struct mii_ioctl_data *mii_data;
47 if ((card->state != CARD_STATE_UP) &&
48 (card->state != CARD_STATE_SOFTSETUP))
51 if (card->info.type == QETH_CARD_TYPE_OSN)
55 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
56 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
58 case SIOC_QETH_GET_CARD_TYPE:
59 if ((card->info.type == QETH_CARD_TYPE_OSD ||
60 card->info.type == QETH_CARD_TYPE_OSM ||
61 card->info.type == QETH_CARD_TYPE_OSX) &&
67 mii_data = if_mii(rq);
71 mii_data = if_mii(rq);
72 if (mii_data->phy_id != 0)
75 mii_data->val_out = qeth_mdio_read(dev,
76 mii_data->phy_id, mii_data->reg_num);
82 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
86 static int qeth_l2_verify_dev(struct net_device *dev)
88 struct qeth_card *card;
92 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
93 list_for_each_entry(card, &qeth_core_card_list.list, list) {
94 if (card->dev == dev) {
99 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
104 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
106 struct qeth_card *card;
107 struct net_device *ndev;
110 struct ccw_dev_id read_devid;
113 memcpy(&temp_dev_no, read_dev_no, 2);
114 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
115 list_for_each_entry(card, &qeth_core_card_list.list, list) {
116 ccw_device_get_id(CARD_RDEV(card), &read_devid);
117 if (read_devid.devno == temp_dev_no) {
122 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
126 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
127 struct qeth_reply *reply,
130 struct qeth_ipa_cmd *cmd;
133 QETH_CARD_TEXT(card, 2, "L2Sgmacb");
134 cmd = (struct qeth_ipa_cmd *) data;
135 mac = &cmd->data.setdelmac.mac[0];
136 /* MAC already registered, needed in couple/uncouple case */
137 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
138 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
139 mac, QETH_CARD_IFNAME(card));
140 cmd->hdr.return_code = 0;
142 if (cmd->hdr.return_code)
143 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
144 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
148 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
150 QETH_CARD_TEXT(card, 2, "L2Sgmac");
151 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
152 qeth_l2_send_setgroupmac_cb);
155 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
156 struct qeth_reply *reply,
159 struct qeth_ipa_cmd *cmd;
162 QETH_CARD_TEXT(card, 2, "L2Dgmacb");
163 cmd = (struct qeth_ipa_cmd *) data;
164 mac = &cmd->data.setdelmac.mac[0];
165 if (cmd->hdr.return_code)
166 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
167 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
171 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
173 QETH_CARD_TEXT(card, 2, "L2Dgmac");
174 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
175 qeth_l2_send_delgroupmac_cb);
178 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
180 struct qeth_mc_mac *mc;
183 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
188 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
189 mc->mc_addrlen = OSA_ADDR_LEN;
193 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
196 rc = qeth_l2_send_setgroupmac(card, mac);
200 list_add_tail(&mc->list, &card->mc_list);
205 static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
207 struct qeth_mc_mac *mc, *tmp;
209 spin_lock_bh(&card->mclock);
210 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
213 qeth_l2_send_setdelmac(card, mc->mc_addr,
214 IPA_CMD_DELVMAC, NULL);
216 qeth_l2_send_delgroupmac(card, mc->mc_addr);
221 spin_unlock_bh(&card->mclock);
224 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
227 if (card->info.type == QETH_CARD_TYPE_OSN)
229 if (is_broadcast_ether_addr(skb->data))
230 return RTN_BROADCAST;
231 if (is_multicast_ether_addr(skb->data))
232 return RTN_MULTICAST;
236 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
237 struct sk_buff *skb, int ipv, int cast_type)
239 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
241 memset(hdr, 0, sizeof(struct qeth_hdr));
242 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
244 /* set byte byte 3 to casting flags */
245 if (cast_type == RTN_MULTICAST)
246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
247 else if (cast_type == RTN_BROADCAST)
248 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
250 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
252 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
253 /* VSWITCH relies on the VLAN
254 * information to be present in
256 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
257 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
258 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
262 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
263 struct qeth_reply *reply, unsigned long data)
265 struct qeth_ipa_cmd *cmd;
267 QETH_CARD_TEXT(card, 2, "L2sdvcb");
268 cmd = (struct qeth_ipa_cmd *) data;
269 if (cmd->hdr.return_code) {
270 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
271 "Continuing\n", cmd->data.setdelvlan.vlan_id,
272 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
273 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
274 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
279 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
280 enum qeth_ipa_cmds ipacmd)
282 struct qeth_ipa_cmd *cmd;
283 struct qeth_cmd_buffer *iob;
285 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
286 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
287 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
288 cmd->data.setdelvlan.vlan_id = i;
289 return qeth_send_ipa_cmd(card, iob,
290 qeth_l2_send_setdelvlan_cb, NULL);
293 static void qeth_l2_process_vlans(struct qeth_card *card)
295 struct qeth_vlan_vid *id;
296 QETH_CARD_TEXT(card, 3, "L2prcvln");
297 spin_lock_bh(&card->vlanlock);
298 list_for_each_entry(id, &card->vid_list, list) {
299 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
301 spin_unlock_bh(&card->vlanlock);
304 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
306 struct qeth_card *card = dev->ml_priv;
307 struct qeth_vlan_vid *id;
309 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
312 if (card->info.type == QETH_CARD_TYPE_OSM) {
313 QETH_CARD_TEXT(card, 3, "aidOSM");
316 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
317 QETH_CARD_TEXT(card, 3, "aidREC");
320 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
323 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
324 spin_lock_bh(&card->vlanlock);
325 list_add_tail(&id->list, &card->vid_list);
326 spin_unlock_bh(&card->vlanlock);
330 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
332 struct qeth_vlan_vid *id, *tmpid = NULL;
333 struct qeth_card *card = dev->ml_priv;
335 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
336 if (card->info.type == QETH_CARD_TYPE_OSM) {
337 QETH_CARD_TEXT(card, 3, "kidOSM");
340 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
341 QETH_CARD_TEXT(card, 3, "kidREC");
344 spin_lock_bh(&card->vlanlock);
345 list_for_each_entry(id, &card->vid_list, list) {
346 if (id->vid == vid) {
352 spin_unlock_bh(&card->vlanlock);
354 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
357 qeth_l2_set_multicast_list(card->dev);
360 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
364 QETH_DBF_TEXT(SETUP , 2, "stopcard");
365 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
367 qeth_set_allowed_threads(card, 0, 1);
368 if (card->read.state == CH_STATE_UP &&
369 card->write.state == CH_STATE_UP &&
370 (card->state == CARD_STATE_UP)) {
372 card->info.type != QETH_CARD_TYPE_OSN) {
373 qeth_l2_stop(card->dev);
376 dev_close(card->dev);
379 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
380 card->state = CARD_STATE_SOFTSETUP;
382 if (card->state == CARD_STATE_SOFTSETUP) {
383 qeth_l2_del_all_mc(card, 0);
384 qeth_clear_ipacmd_list(card);
385 card->state = CARD_STATE_HARDSETUP;
387 if (card->state == CARD_STATE_HARDSETUP) {
388 qeth_qdio_clear_card(card, 0);
389 qeth_clear_qdio_buffers(card);
390 qeth_clear_working_pool_list(card);
391 card->state = CARD_STATE_DOWN;
393 if (card->state == CARD_STATE_DOWN) {
394 qeth_clear_cmd_buffers(&card->read);
395 qeth_clear_cmd_buffers(&card->write);
400 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
401 int budget, int *done)
405 struct qeth_hdr *hdr;
411 skb = qeth_core_get_next_skb(card,
412 &card->qdio.in_q->bufs[card->rx.b_index],
413 &card->rx.b_element, &card->rx.e_offset, &hdr);
418 skb->dev = card->dev;
419 switch (hdr->hdr.l2.id) {
420 case QETH_HEADER_TYPE_LAYER2:
421 skb->pkt_type = PACKET_HOST;
422 skb->protocol = eth_type_trans(skb, skb->dev);
423 skb->ip_summed = CHECKSUM_NONE;
424 if (skb->protocol == htons(ETH_P_802_2))
425 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
427 netif_receive_skb(skb);
429 case QETH_HEADER_TYPE_OSN:
430 if (card->info.type == QETH_CARD_TYPE_OSN) {
431 skb_push(skb, sizeof(struct qeth_hdr));
432 skb_copy_to_linear_data(skb, hdr,
433 sizeof(struct qeth_hdr));
435 card->osn_info.data_cb(skb);
440 dev_kfree_skb_any(skb);
441 QETH_CARD_TEXT(card, 3, "inbunkno");
442 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
447 card->stats.rx_packets++;
448 card->stats.rx_bytes += len;
453 static int qeth_l2_poll(struct napi_struct *napi, int budget)
455 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
457 struct qeth_qdio_buffer *buffer;
459 int new_budget = budget;
461 if (card->options.performance_stats) {
462 card->perf_stats.inbound_cnt++;
463 card->perf_stats.inbound_start_time = qeth_get_micros();
467 if (!card->rx.b_count) {
468 card->rx.qdio_err = 0;
469 card->rx.b_count = qdio_get_next_buffers(
470 card->data.ccwdev, 0, &card->rx.b_index,
472 if (card->rx.b_count <= 0) {
473 card->rx.b_count = 0;
477 &card->qdio.in_q->bufs[card->rx.b_index]
479 card->rx.e_offset = 0;
482 while (card->rx.b_count) {
483 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
484 if (!(card->rx.qdio_err &&
485 qeth_check_qdio_errors(card, buffer->buffer,
486 card->rx.qdio_err, "qinerr")))
487 work_done += qeth_l2_process_inbound_buffer(
488 card, new_budget, &done);
493 if (card->options.performance_stats)
494 card->perf_stats.bufs_rec++;
495 qeth_put_buffer_pool_entry(card,
497 qeth_queue_input_buffer(card, card->rx.b_index);
499 if (card->rx.b_count) {
501 (card->rx.b_index + 1) %
502 QDIO_MAX_BUFFERS_PER_Q;
505 ->bufs[card->rx.b_index]
507 card->rx.e_offset = 0;
511 if (work_done >= budget)
514 new_budget = budget - work_done;
519 if (qdio_start_irq(card->data.ccwdev, 0))
520 napi_schedule(&card->napi);
522 if (card->options.performance_stats)
523 card->perf_stats.inbound_time += qeth_get_micros() -
524 card->perf_stats.inbound_start_time;
528 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
529 enum qeth_ipa_cmds ipacmd,
530 int (*reply_cb) (struct qeth_card *,
534 struct qeth_ipa_cmd *cmd;
535 struct qeth_cmd_buffer *iob;
537 QETH_CARD_TEXT(card, 2, "L2sdmac");
538 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
539 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
540 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
541 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
542 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
545 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
546 struct qeth_reply *reply,
549 struct qeth_ipa_cmd *cmd;
551 QETH_CARD_TEXT(card, 2, "L2Smaccb");
552 cmd = (struct qeth_ipa_cmd *) data;
553 if (cmd->hdr.return_code) {
554 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
555 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
556 switch (cmd->hdr.return_code) {
557 case IPA_RC_L2_DUP_MAC:
558 case IPA_RC_L2_DUP_LAYER3_MAC:
559 dev_warn(&card->gdev->dev,
560 "MAC address %pM already exists\n",
561 cmd->data.setdelmac.mac);
563 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
564 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
565 dev_warn(&card->gdev->dev,
566 "MAC address %pM is not authorized\n",
567 cmd->data.setdelmac.mac);
572 cmd->hdr.return_code = -EIO;
574 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
575 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
577 dev_info(&card->gdev->dev,
578 "MAC address %pM successfully registered on device %s\n",
579 card->dev->dev_addr, card->dev->name);
584 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
586 QETH_CARD_TEXT(card, 2, "L2Setmac");
587 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
588 qeth_l2_send_setmac_cb);
591 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
592 struct qeth_reply *reply,
595 struct qeth_ipa_cmd *cmd;
597 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
598 cmd = (struct qeth_ipa_cmd *) data;
599 if (cmd->hdr.return_code) {
600 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
601 cmd->hdr.return_code = -EIO;
604 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
609 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
611 QETH_CARD_TEXT(card, 2, "L2Delmac");
612 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
614 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
615 qeth_l2_send_delmac_cb);
618 static int qeth_l2_request_initial_mac(struct qeth_card *card)
621 char vendor_pre[] = {0x02, 0x00, 0x00};
623 QETH_DBF_TEXT(SETUP, 2, "doL2init");
624 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
626 rc = qeth_query_setadapterparms(card);
628 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
629 "device %s: x%x\n", CARD_BUS_ID(card), rc);
632 if (card->info.type == QETH_CARD_TYPE_IQD ||
633 card->info.type == QETH_CARD_TYPE_OSM ||
634 card->info.type == QETH_CARD_TYPE_OSX ||
635 card->info.guestlan) {
636 rc = qeth_setadpparms_change_macaddr(card);
638 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
639 "device %s: x%x\n", CARD_BUS_ID(card), rc);
640 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
643 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
645 random_ether_addr(card->dev->dev_addr);
646 memcpy(card->dev->dev_addr, vendor_pre, 3);
651 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
653 struct sockaddr *addr = p;
654 struct qeth_card *card = dev->ml_priv;
657 QETH_CARD_TEXT(card, 3, "setmac");
659 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
660 QETH_CARD_TEXT(card, 3, "setmcINV");
664 if (card->info.type == QETH_CARD_TYPE_OSN ||
665 card->info.type == QETH_CARD_TYPE_OSM ||
666 card->info.type == QETH_CARD_TYPE_OSX) {
667 QETH_CARD_TEXT(card, 3, "setmcTYP");
670 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
671 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
672 QETH_CARD_TEXT(card, 3, "setmcREC");
675 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
677 rc = qeth_l2_send_setmac(card, addr->sa_data);
681 static void qeth_l2_set_multicast_list(struct net_device *dev)
683 struct qeth_card *card = dev->ml_priv;
684 struct netdev_hw_addr *ha;
686 if (card->info.type == QETH_CARD_TYPE_OSN)
689 QETH_CARD_TEXT(card, 3, "setmulti");
690 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
691 (card->state != CARD_STATE_UP))
693 qeth_l2_del_all_mc(card, 1);
694 spin_lock_bh(&card->mclock);
695 netdev_for_each_mc_addr(ha, dev)
696 qeth_l2_add_mc(card, ha->addr, 0);
698 netdev_for_each_uc_addr(ha, dev)
699 qeth_l2_add_mc(card, ha->addr, 1);
701 spin_unlock_bh(&card->mclock);
702 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
704 qeth_setadp_promisc_mode(card);
707 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
710 struct qeth_hdr *hdr = NULL;
712 struct qeth_card *card = dev->ml_priv;
713 struct sk_buff *new_skb = skb;
714 int ipv = qeth_get_ip_version(skb);
715 int cast_type = qeth_l2_get_cast_type(card, skb);
716 struct qeth_qdio_out_q *queue = card->qdio.out_qs
717 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
718 int tx_bytes = skb->len;
719 int data_offset = -1;
720 int elements_needed = 0;
723 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
724 card->stats.tx_carrier_errors++;
728 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
729 (skb->protocol == htons(ETH_P_IPV6)))
732 if (card->options.performance_stats) {
733 card->perf_stats.outbound_cnt++;
734 card->perf_stats.outbound_start_time = qeth_get_micros();
736 netif_stop_queue(dev);
738 if (card->info.type == QETH_CARD_TYPE_OSN)
739 hdr = (struct qeth_hdr *)skb->data;
741 if (card->info.type == QETH_CARD_TYPE_IQD) {
743 data_offset = ETH_HLEN;
745 hdr = kmem_cache_alloc(qeth_core_header_cache,
750 skb_reset_mac_header(new_skb);
751 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
752 hdr->hdr.l2.pkt_length = new_skb->len;
753 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
754 skb_mac_header(new_skb), ETH_HLEN);
756 /* create a clone with writeable headroom */
757 new_skb = skb_realloc_headroom(skb,
758 sizeof(struct qeth_hdr));
761 hdr = (struct qeth_hdr *)skb_push(new_skb,
762 sizeof(struct qeth_hdr));
763 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
764 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
768 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
771 if (data_offset >= 0)
772 kmem_cache_free(qeth_core_header_cache, hdr);
776 if (card->info.type != QETH_CARD_TYPE_IQD) {
777 if (qeth_hdr_chk_and_bounce(new_skb,
778 sizeof(struct qeth_hdr_layer2)))
780 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
783 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
784 elements, data_offset, hd_len);
786 card->stats.tx_packets++;
787 card->stats.tx_bytes += tx_bytes;
789 dev_kfree_skb_any(skb);
792 if (data_offset >= 0)
793 kmem_cache_free(qeth_core_header_cache, hdr);
797 dev_kfree_skb_any(new_skb);
798 return NETDEV_TX_BUSY;
803 netif_wake_queue(dev);
804 if (card->options.performance_stats)
805 card->perf_stats.outbound_time += qeth_get_micros() -
806 card->perf_stats.outbound_start_time;
810 card->stats.tx_dropped++;
811 card->stats.tx_errors++;
812 if ((new_skb != skb) && new_skb)
813 dev_kfree_skb_any(new_skb);
814 dev_kfree_skb_any(skb);
815 netif_wake_queue(dev);
819 static int __qeth_l2_open(struct net_device *dev)
821 struct qeth_card *card = dev->ml_priv;
824 QETH_CARD_TEXT(card, 4, "qethopen");
825 if (card->state == CARD_STATE_UP)
827 if (card->state != CARD_STATE_SOFTSETUP)
830 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
831 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
832 QETH_CARD_TEXT(card, 4, "nomacadr");
835 card->data.state = CH_STATE_UP;
836 card->state = CARD_STATE_UP;
837 netif_start_queue(dev);
839 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
840 napi_enable(&card->napi);
841 napi_schedule(&card->napi);
847 static int qeth_l2_open(struct net_device *dev)
849 struct qeth_card *card = dev->ml_priv;
851 QETH_CARD_TEXT(card, 5, "qethope_");
852 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
853 QETH_CARD_TEXT(card, 3, "openREC");
856 return __qeth_l2_open(dev);
859 static int qeth_l2_stop(struct net_device *dev)
861 struct qeth_card *card = dev->ml_priv;
863 QETH_CARD_TEXT(card, 4, "qethstop");
864 netif_tx_disable(dev);
865 if (card->state == CARD_STATE_UP) {
866 card->state = CARD_STATE_SOFTSETUP;
867 napi_disable(&card->napi);
872 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
874 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
876 INIT_LIST_HEAD(&card->vid_list);
877 INIT_LIST_HEAD(&card->mc_list);
878 card->options.layer2 = 1;
879 card->info.hwtrap = 0;
880 card->discipline.start_poll = qeth_qdio_start_poll;
881 card->discipline.input_handler = (qdio_handler_t *)
882 qeth_qdio_input_handler;
883 card->discipline.output_handler = (qdio_handler_t *)
884 qeth_qdio_output_handler;
885 card->discipline.recover = qeth_l2_recover;
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;
977 mutex_lock(&card->discipline_mutex);
978 mutex_lock(&card->conf_mutex);
979 QETH_DBF_TEXT(SETUP, 2, "setonlin");
980 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
982 recover_flag = card->state;
983 rc = qeth_core_hardsetup_card(card);
985 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
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 qeth_set_access_ctrl_online(card);
1032 if (card->info.type != QETH_CARD_TYPE_OSN &&
1033 card->info.type != QETH_CARD_TYPE_OSM)
1034 qeth_l2_process_vlans(card);
1036 netif_tx_disable(card->dev);
1038 rc = qeth_init_qdio_queues(card);
1040 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1044 card->state = CARD_STATE_SOFTSETUP;
1045 if (card->lan_online)
1046 netif_carrier_on(card->dev);
1048 netif_carrier_off(card->dev);
1050 qeth_set_allowed_threads(card, 0xffffffff, 0);
1051 if (recover_flag == CARD_STATE_RECOVER) {
1052 if (recovery_mode &&
1053 card->info.type != QETH_CARD_TYPE_OSN) {
1054 __qeth_l2_open(card->dev);
1057 dev_open(card->dev);
1060 /* this also sets saved unicast addresses */
1061 qeth_l2_set_multicast_list(card->dev);
1063 /* let user_space know that device is online */
1064 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1065 mutex_unlock(&card->conf_mutex);
1066 mutex_unlock(&card->discipline_mutex);
1070 qeth_l2_stop_card(card, 0);
1071 ccw_device_set_offline(CARD_DDEV(card));
1072 ccw_device_set_offline(CARD_WDEV(card));
1073 ccw_device_set_offline(CARD_RDEV(card));
1074 if (recover_flag == CARD_STATE_RECOVER)
1075 card->state = CARD_STATE_RECOVER;
1077 card->state = CARD_STATE_DOWN;
1078 mutex_unlock(&card->conf_mutex);
1079 mutex_unlock(&card->discipline_mutex);
1083 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1085 return __qeth_l2_set_online(gdev, 0);
1088 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1091 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1092 int rc = 0, rc2 = 0, rc3 = 0;
1093 enum qeth_card_states recover_flag;
1095 mutex_lock(&card->discipline_mutex);
1096 mutex_lock(&card->conf_mutex);
1097 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1098 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1100 if (card->dev && netif_carrier_ok(card->dev))
1101 netif_carrier_off(card->dev);
1102 recover_flag = card->state;
1103 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1104 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1105 card->info.hwtrap = 1;
1107 qeth_l2_stop_card(card, recovery_mode);
1108 rc = ccw_device_set_offline(CARD_DDEV(card));
1109 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1110 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1112 rc = (rc2) ? rc2 : rc3;
1114 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1115 if (recover_flag == CARD_STATE_UP)
1116 card->state = CARD_STATE_RECOVER;
1117 /* let user_space know that device is offline */
1118 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1119 mutex_unlock(&card->conf_mutex);
1120 mutex_unlock(&card->discipline_mutex);
1124 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1126 return __qeth_l2_set_offline(cgdev, 0);
1129 static int qeth_l2_recover(void *ptr)
1131 struct qeth_card *card;
1134 card = (struct qeth_card *) ptr;
1135 QETH_CARD_TEXT(card, 2, "recover1");
1136 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1138 QETH_CARD_TEXT(card, 2, "recover2");
1139 dev_warn(&card->gdev->dev,
1140 "A recovery process has been started for the device\n");
1141 __qeth_l2_set_offline(card->gdev, 1);
1142 rc = __qeth_l2_set_online(card->gdev, 1);
1144 dev_info(&card->gdev->dev,
1145 "Device successfully recovered!\n");
1148 dev_close(card->dev);
1150 dev_warn(&card->gdev->dev, "The qeth device driver "
1151 "failed to recover an error on the device\n");
1153 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1154 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1158 static int __init qeth_l2_init(void)
1160 pr_info("register layer 2 discipline\n");
1164 static void __exit qeth_l2_exit(void)
1166 pr_info("unregister layer 2 discipline\n");
1169 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1171 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1172 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1173 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1174 qeth_qdio_clear_card(card, 0);
1175 qeth_clear_qdio_buffers(card);
1178 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1180 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1183 netif_device_detach(card->dev);
1184 qeth_set_allowed_threads(card, 0, 1);
1185 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1186 if (gdev->state == CCWGROUP_OFFLINE)
1188 if (card->state == CARD_STATE_UP) {
1189 if (card->info.hwtrap)
1190 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1191 __qeth_l2_set_offline(card->gdev, 1);
1193 __qeth_l2_set_offline(card->gdev, 0);
1197 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1199 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1202 if (gdev->state == CCWGROUP_OFFLINE)
1205 if (card->state == CARD_STATE_RECOVER) {
1206 rc = __qeth_l2_set_online(card->gdev, 1);
1209 dev_close(card->dev);
1213 rc = __qeth_l2_set_online(card->gdev, 0);
1215 qeth_set_allowed_threads(card, 0xffffffff, 0);
1217 netif_device_attach(card->dev);
1219 dev_warn(&card->gdev->dev, "The qeth device driver "
1220 "failed to recover an error on the device\n");
1224 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1225 .probe = qeth_l2_probe_device,
1226 .remove = qeth_l2_remove_device,
1227 .set_online = qeth_l2_set_online,
1228 .set_offline = qeth_l2_set_offline,
1229 .shutdown = qeth_l2_shutdown,
1230 .freeze = qeth_l2_pm_suspend,
1231 .thaw = qeth_l2_pm_resume,
1232 .restore = qeth_l2_pm_resume,
1234 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1236 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1237 struct qeth_cmd_buffer *iob)
1239 unsigned long flags;
1242 QETH_CARD_TEXT(card, 5, "osndctrd");
1244 wait_event(card->wait_q,
1245 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1246 qeth_prepare_control_data(card, len, iob);
1247 QETH_CARD_TEXT(card, 6, "osnoirqp");
1248 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1249 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1250 (addr_t) iob, 0, 0);
1251 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1253 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1254 "ccw_device_start rc = %i\n", rc);
1255 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1256 qeth_release_buffer(iob->channel, iob);
1257 atomic_set(&card->write.irq_pending, 0);
1258 wake_up(&card->wait_q);
1263 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1264 struct qeth_cmd_buffer *iob, int data_len)
1268 QETH_CARD_TEXT(card, 4, "osndipa");
1270 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1271 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1273 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1274 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1275 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1276 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1277 return qeth_osn_send_control_data(card, s1, iob);
1280 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1282 struct qeth_cmd_buffer *iob;
1283 struct qeth_card *card;
1288 card = dev->ml_priv;
1291 QETH_CARD_TEXT(card, 2, "osnsdmc");
1292 if ((card->state != CARD_STATE_UP) &&
1293 (card->state != CARD_STATE_SOFTSETUP))
1295 iob = qeth_wait_for_buffer(&card->write);
1296 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1297 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1300 EXPORT_SYMBOL(qeth_osn_assist);
1302 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1303 int (*assist_cb)(struct net_device *, void *),
1304 int (*data_cb)(struct sk_buff *))
1306 struct qeth_card *card;
1308 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1311 card = (*dev)->ml_priv;
1314 QETH_CARD_TEXT(card, 2, "osnreg");
1315 if ((assist_cb == NULL) || (data_cb == NULL))
1317 card->osn_info.assist_cb = assist_cb;
1318 card->osn_info.data_cb = data_cb;
1321 EXPORT_SYMBOL(qeth_osn_register);
1323 void qeth_osn_deregister(struct net_device *dev)
1325 struct qeth_card *card;
1329 card = dev->ml_priv;
1332 QETH_CARD_TEXT(card, 2, "osndereg");
1333 card->osn_info.assist_cb = NULL;
1334 card->osn_info.data_cb = NULL;
1337 EXPORT_SYMBOL(qeth_osn_deregister);
1339 module_init(qeth_l2_init);
1340 module_exit(qeth_l2_exit);
1341 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1342 MODULE_DESCRIPTION("qeth layer 2 discipline");
1343 MODULE_LICENSE("GPL");