2 * drivers/s390/net/qeth_l2_main.c
4 * Copyright IBM Corp. 2007
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 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/string.h>
14 #include <linux/errno.h>
15 #include <linux/kernel.h>
16 #include <linux/etherdevice.h>
17 #include <linux/mii.h>
20 #include <asm/s390_rdev.h>
22 #include "qeth_core.h"
23 #include "qeth_core_offl.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_OSAE) &&
63 mii_data = if_mii(rq);
67 mii_data = if_mii(rq);
68 if (mii_data->phy_id != 0)
71 mii_data->val_out = qeth_mdio_read(dev,
72 mii_data->phy_id, mii_data->reg_num);
78 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
82 static int qeth_l2_verify_dev(struct net_device *dev)
84 struct qeth_card *card;
88 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
89 list_for_each_entry(card, &qeth_core_card_list.list, list) {
90 if (card->dev == dev) {
95 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
100 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
102 struct qeth_card *card;
103 struct net_device *ndev;
106 struct ccw_dev_id read_devid;
109 memcpy(&temp_dev_no, read_dev_no, 2);
110 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
111 list_for_each_entry(card, &qeth_core_card_list.list, list) {
112 ccw_device_get_id(CARD_RDEV(card), &read_devid);
113 if (read_devid.devno == temp_dev_no) {
118 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
122 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
123 struct qeth_reply *reply,
126 struct qeth_ipa_cmd *cmd;
129 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
130 cmd = (struct qeth_ipa_cmd *) data;
131 mac = &cmd->data.setdelmac.mac[0];
132 /* MAC already registered, needed in couple/uncouple case */
133 if (cmd->hdr.return_code == 0x2005) {
134 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
135 mac, QETH_CARD_IFNAME(card));
136 cmd->hdr.return_code = 0;
138 if (cmd->hdr.return_code)
139 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
140 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
144 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
146 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
147 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
148 qeth_l2_send_setgroupmac_cb);
151 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
152 struct qeth_reply *reply,
155 struct qeth_ipa_cmd *cmd;
158 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
159 cmd = (struct qeth_ipa_cmd *) data;
160 mac = &cmd->data.setdelmac.mac[0];
161 if (cmd->hdr.return_code)
162 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
163 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
167 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
169 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
170 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
171 qeth_l2_send_delgroupmac_cb);
174 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
176 struct qeth_mc_mac *mc;
179 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
184 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
185 mc->mc_addrlen = OSA_ADDR_LEN;
189 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
192 rc = qeth_l2_send_setgroupmac(card, mac);
196 list_add_tail(&mc->list, &card->mc_list);
201 static void qeth_l2_del_all_mc(struct qeth_card *card)
203 struct qeth_mc_mac *mc, *tmp;
205 spin_lock_bh(&card->mclock);
206 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
208 qeth_l2_send_setdelmac(card, mc->mc_addr,
209 IPA_CMD_DELVMAC, NULL);
211 qeth_l2_send_delgroupmac(card, mc->mc_addr);
215 spin_unlock_bh(&card->mclock);
218 static void qeth_l2_get_packet_type(struct qeth_card *card,
219 struct qeth_hdr *hdr, struct sk_buff *skb)
223 if (!memcmp(skb->data + QETH_HEADER_SIZE,
224 skb->dev->broadcast, 6)) {
226 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
229 hdr_mac = *((__u16 *)skb->data);
231 switch (card->info.link_type) {
232 case QETH_LINK_TYPE_HSTR:
233 case QETH_LINK_TYPE_LANE_TR:
234 if ((hdr_mac == QETH_TR_MAC_NC) ||
235 (hdr_mac == QETH_TR_MAC_C))
236 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
238 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
240 /* eth or so multicast? */
242 if ((hdr_mac == QETH_ETH_MAC_V4) ||
243 (hdr_mac == QETH_ETH_MAC_V6))
244 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
250 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
251 struct sk_buff *skb, int ipv, int cast_type)
253 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
255 memset(hdr, 0, sizeof(struct qeth_hdr));
256 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
258 /* set byte byte 3 to casting flags */
259 if (cast_type == RTN_MULTICAST)
260 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
261 else if (cast_type == RTN_BROADCAST)
262 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
264 qeth_l2_get_packet_type(card, hdr, skb);
266 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
267 /* VSWITCH relies on the VLAN
268 * information to be present in
270 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
271 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
272 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
276 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
277 struct qeth_reply *reply, unsigned long data)
279 struct qeth_ipa_cmd *cmd;
281 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
282 cmd = (struct qeth_ipa_cmd *) data;
283 if (cmd->hdr.return_code) {
284 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
285 "Continuing\n", cmd->data.setdelvlan.vlan_id,
286 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
287 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
288 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
289 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
294 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
295 enum qeth_ipa_cmds ipacmd)
297 struct qeth_ipa_cmd *cmd;
298 struct qeth_cmd_buffer *iob;
300 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
301 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
302 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
303 cmd->data.setdelvlan.vlan_id = i;
304 return qeth_send_ipa_cmd(card, iob,
305 qeth_l2_send_setdelvlan_cb, NULL);
308 static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
310 struct qeth_vlan_vid *id;
311 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
312 spin_lock_bh(&card->vlanlock);
313 list_for_each_entry(id, &card->vid_list, list) {
315 qeth_l2_send_setdelvlan(card, id->vid,
318 qeth_l2_send_setdelvlan(card, id->vid,
321 spin_unlock_bh(&card->vlanlock);
324 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
326 struct qeth_card *card = dev->ml_priv;
327 struct qeth_vlan_vid *id;
329 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
330 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
333 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
334 spin_lock_bh(&card->vlanlock);
335 list_add_tail(&id->list, &card->vid_list);
336 spin_unlock_bh(&card->vlanlock);
340 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
342 struct qeth_vlan_vid *id, *tmpid = NULL;
343 struct qeth_card *card = dev->ml_priv;
345 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
346 spin_lock_bh(&card->vlanlock);
347 list_for_each_entry(id, &card->vid_list, list) {
348 if (id->vid == vid) {
354 spin_unlock_bh(&card->vlanlock);
356 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
359 qeth_l2_set_multicast_list(card->dev);
362 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
366 QETH_DBF_TEXT(SETUP , 2, "stopcard");
367 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
369 qeth_set_allowed_threads(card, 0, 1);
370 if (card->read.state == CH_STATE_UP &&
371 card->write.state == CH_STATE_UP &&
372 (card->state == CARD_STATE_UP)) {
374 card->info.type != QETH_CARD_TYPE_OSN) {
375 qeth_l2_stop(card->dev);
378 dev_close(card->dev);
381 if (!card->use_hard_stop) {
382 __u8 *mac = &card->dev->dev_addr[0];
383 rc = qeth_l2_send_delmac(card, mac);
384 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
386 card->state = CARD_STATE_SOFTSETUP;
388 if (card->state == CARD_STATE_SOFTSETUP) {
389 qeth_l2_process_vlans(card, 1);
390 if (!card->use_hard_stop)
391 qeth_l2_del_all_mc(card);
392 qeth_clear_ipacmd_list(card);
393 card->state = CARD_STATE_HARDSETUP;
395 if (card->state == CARD_STATE_HARDSETUP) {
396 qeth_qdio_clear_card(card, 0);
397 qeth_clear_qdio_buffers(card);
398 qeth_clear_working_pool_list(card);
399 card->state = CARD_STATE_DOWN;
401 if (card->state == CARD_STATE_DOWN) {
402 qeth_clear_cmd_buffers(&card->read);
403 qeth_clear_cmd_buffers(&card->write);
405 card->use_hard_stop = 0;
409 static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
410 struct qeth_qdio_buffer *buf, int index)
412 struct qdio_buffer_element *element;
414 struct qeth_hdr *hdr;
418 /* get first element of current buffer */
419 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
421 if (card->options.performance_stats)
422 card->perf_stats.bufs_rec++;
423 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
425 skb->dev = card->dev;
427 if (!(card->dev->flags & IFF_UP)) {
428 dev_kfree_skb_any(skb);
432 switch (hdr->hdr.l2.id) {
433 case QETH_HEADER_TYPE_LAYER2:
434 skb->pkt_type = PACKET_HOST;
435 skb->protocol = eth_type_trans(skb, skb->dev);
436 if (card->options.checksum_type == NO_CHECKSUMMING)
437 skb->ip_summed = CHECKSUM_UNNECESSARY;
439 skb->ip_summed = CHECKSUM_NONE;
440 if (skb->protocol == htons(ETH_P_802_2))
441 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
445 case QETH_HEADER_TYPE_OSN:
446 if (card->info.type == QETH_CARD_TYPE_OSN) {
447 skb_push(skb, sizeof(struct qeth_hdr));
448 skb_copy_to_linear_data(skb, hdr,
449 sizeof(struct qeth_hdr));
451 card->osn_info.data_cb(skb);
456 dev_kfree_skb_any(skb);
457 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
458 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
461 card->dev->last_rx = jiffies;
462 card->stats.rx_packets++;
463 card->stats.rx_bytes += len;
467 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
468 enum qeth_ipa_cmds ipacmd,
469 int (*reply_cb) (struct qeth_card *,
473 struct qeth_ipa_cmd *cmd;
474 struct qeth_cmd_buffer *iob;
476 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
477 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
478 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
479 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
480 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
481 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
484 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
485 struct qeth_reply *reply,
488 struct qeth_ipa_cmd *cmd;
490 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
491 cmd = (struct qeth_ipa_cmd *) data;
492 if (cmd->hdr.return_code) {
493 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
494 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
495 cmd->hdr.return_code = -EIO;
497 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
498 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
500 PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
501 "successfully registered on device %s\n",
502 card->dev->dev_addr[0], card->dev->dev_addr[1],
503 card->dev->dev_addr[2], card->dev->dev_addr[3],
504 card->dev->dev_addr[4], card->dev->dev_addr[5],
510 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
512 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
513 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
514 qeth_l2_send_setmac_cb);
517 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
518 struct qeth_reply *reply,
521 struct qeth_ipa_cmd *cmd;
523 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
524 cmd = (struct qeth_ipa_cmd *) data;
525 if (cmd->hdr.return_code) {
526 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
527 cmd->hdr.return_code = -EIO;
530 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
535 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
537 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
538 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
540 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
541 qeth_l2_send_delmac_cb);
544 static int qeth_l2_request_initial_mac(struct qeth_card *card)
547 char vendor_pre[] = {0x02, 0x00, 0x00};
549 QETH_DBF_TEXT(SETUP, 2, "doL2init");
550 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
552 rc = qeth_query_setadapterparms(card);
554 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
555 "device %s: x%x\n", CARD_BUS_ID(card), rc);
558 if ((card->info.type == QETH_CARD_TYPE_IQD) ||
559 (card->info.guestlan)) {
560 rc = qeth_setadpparms_change_macaddr(card);
562 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
563 "device %s: x%x\n", CARD_BUS_ID(card), rc);
564 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
567 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
569 random_ether_addr(card->dev->dev_addr);
570 memcpy(card->dev->dev_addr, vendor_pre, 3);
575 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
577 struct sockaddr *addr = p;
578 struct qeth_card *card = dev->ml_priv;
581 QETH_DBF_TEXT(TRACE, 3, "setmac");
583 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
584 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
588 if (card->info.type == QETH_CARD_TYPE_OSN) {
589 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
592 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
593 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
594 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
596 rc = qeth_l2_send_setmac(card, addr->sa_data);
600 static void qeth_l2_set_multicast_list(struct net_device *dev)
602 struct qeth_card *card = dev->ml_priv;
603 struct dev_addr_list *dm;
605 if (card->info.type == QETH_CARD_TYPE_OSN)
608 QETH_DBF_TEXT(TRACE, 3, "setmulti");
609 qeth_l2_del_all_mc(card);
610 spin_lock_bh(&card->mclock);
611 for (dm = dev->mc_list; dm; dm = dm->next)
612 qeth_l2_add_mc(card, dm->da_addr, 0);
614 for (dm = dev->uc_list; dm; dm = dm->next)
615 qeth_l2_add_mc(card, dm->da_addr, 1);
617 spin_unlock_bh(&card->mclock);
618 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
620 qeth_setadp_promisc_mode(card);
623 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
626 struct qeth_hdr *hdr = NULL;
628 struct qeth_card *card = dev->ml_priv;
629 struct sk_buff *new_skb = skb;
630 int ipv = qeth_get_ip_version(skb);
631 int cast_type = qeth_get_cast_type(card, skb);
632 struct qeth_qdio_out_q *queue = card->qdio.out_qs
633 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
634 int tx_bytes = skb->len;
635 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
636 struct qeth_eddp_context *ctx = NULL;
637 int data_offset = -1;
638 int elements_needed = 0;
641 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
642 card->stats.tx_carrier_errors++;
646 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
647 (skb->protocol == htons(ETH_P_IPV6)))
650 if (card->options.performance_stats) {
651 card->perf_stats.outbound_cnt++;
652 card->perf_stats.outbound_start_time = qeth_get_micros();
654 netif_stop_queue(dev);
657 large_send = QETH_LARGE_SEND_EDDP;
659 if (card->info.type == QETH_CARD_TYPE_OSN)
660 hdr = (struct qeth_hdr *)skb->data;
662 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
663 (skb_shinfo(skb)->nr_frags == 0)) {
665 data_offset = ETH_HLEN;
667 hdr = kmem_cache_alloc(qeth_core_header_cache,
672 skb_reset_mac_header(new_skb);
673 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
674 hdr->hdr.l2.pkt_length = new_skb->len;
675 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
676 skb_mac_header(new_skb), ETH_HLEN);
678 /* create a clone with writeable headroom */
679 new_skb = skb_realloc_headroom(skb,
680 sizeof(struct qeth_hdr));
683 hdr = (struct qeth_hdr *)skb_push(new_skb,
684 sizeof(struct qeth_hdr));
685 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
686 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
690 if (large_send == QETH_LARGE_SEND_EDDP) {
691 ctx = qeth_eddp_create_context(card, new_skb, hdr,
692 skb->sk->sk_protocol);
694 QETH_DBF_MESSAGE(2, "could not create eddp context\n");
698 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
701 if (data_offset >= 0)
702 kmem_cache_free(qeth_core_header_cache, hdr);
707 if ((large_send == QETH_LARGE_SEND_NO) &&
708 (skb->ip_summed == CHECKSUM_PARTIAL))
709 qeth_tx_csum(new_skb);
711 if (card->info.type != QETH_CARD_TYPE_IQD)
712 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
715 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
716 elements, ctx, data_offset, hd_len);
718 card->stats.tx_packets++;
719 card->stats.tx_bytes += tx_bytes;
721 dev_kfree_skb_any(skb);
722 if (card->options.performance_stats) {
723 if (large_send != QETH_LARGE_SEND_NO) {
724 card->perf_stats.large_send_bytes += tx_bytes;
725 card->perf_stats.large_send_cnt++;
727 if (skb_shinfo(new_skb)->nr_frags > 0) {
728 card->perf_stats.sg_skbs_sent++;
729 /* nr_frags + skb->data */
730 card->perf_stats.sg_frags_sent +=
731 skb_shinfo(new_skb)->nr_frags + 1;
736 qeth_eddp_put_context(ctx);
737 dev_kfree_skb_any(new_skb);
741 qeth_eddp_put_context(ctx);
743 if (data_offset >= 0)
744 kmem_cache_free(qeth_core_header_cache, hdr);
748 dev_kfree_skb_any(new_skb);
749 return NETDEV_TX_BUSY;
754 netif_wake_queue(dev);
755 if (card->options.performance_stats)
756 card->perf_stats.outbound_time += qeth_get_micros() -
757 card->perf_stats.outbound_start_time;
761 card->stats.tx_dropped++;
762 card->stats.tx_errors++;
763 if ((new_skb != skb) && new_skb)
764 dev_kfree_skb_any(new_skb);
765 dev_kfree_skb_any(skb);
766 netif_wake_queue(dev);
770 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
771 unsigned int qdio_err, unsigned int queue,
772 int first_element, int count, unsigned long card_ptr)
774 struct net_device *net_dev;
775 struct qeth_card *card;
776 struct qeth_qdio_buffer *buffer;
780 card = (struct qeth_card *) card_ptr;
782 if (card->options.performance_stats) {
783 card->perf_stats.inbound_cnt++;
784 card->perf_stats.inbound_start_time = qeth_get_micros();
786 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
787 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
788 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
789 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
791 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
792 qeth_schedule_recovery(card);
795 for (i = first_element; i < (first_element + count); ++i) {
796 index = i % QDIO_MAX_BUFFERS_PER_Q;
797 buffer = &card->qdio.in_q->bufs[index];
799 qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr")))
800 qeth_l2_process_inbound_buffer(card, buffer, index);
801 /* clear buffer and give back to hardware */
802 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
803 qeth_queue_input_buffer(card, index);
805 if (card->options.performance_stats)
806 card->perf_stats.inbound_time += qeth_get_micros() -
807 card->perf_stats.inbound_start_time;
810 static int qeth_l2_open(struct net_device *dev)
812 struct qeth_card *card = dev->ml_priv;
814 QETH_DBF_TEXT(TRACE, 4, "qethopen");
815 if (card->state != CARD_STATE_SOFTSETUP)
818 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
819 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
820 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
823 card->data.state = CH_STATE_UP;
824 card->state = CARD_STATE_UP;
825 netif_start_queue(dev);
827 if (!card->lan_online && netif_carrier_ok(dev))
828 netif_carrier_off(dev);
833 static int qeth_l2_stop(struct net_device *dev)
835 struct qeth_card *card = dev->ml_priv;
837 QETH_DBF_TEXT(TRACE, 4, "qethstop");
838 netif_tx_disable(dev);
839 if (card->state == CARD_STATE_UP)
840 card->state = CARD_STATE_SOFTSETUP;
844 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
846 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
848 INIT_LIST_HEAD(&card->vid_list);
849 INIT_LIST_HEAD(&card->mc_list);
850 card->options.layer2 = 1;
851 card->discipline.input_handler = (qdio_handler_t *)
852 qeth_l2_qdio_input_handler;
853 card->discipline.output_handler = (qdio_handler_t *)
854 qeth_qdio_output_handler;
855 card->discipline.recover = qeth_l2_recover;
859 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
861 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
863 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
865 if (cgdev->state == CCWGROUP_ONLINE) {
866 card->use_hard_stop = 1;
867 qeth_l2_set_offline(cgdev);
871 unregister_netdev(card->dev);
875 qeth_l2_del_all_mc(card);
879 static int qeth_l2_ethtool_set_tso(struct net_device *dev, u32 data)
881 struct qeth_card *card = dev->ml_priv;
884 if (card->options.large_send == QETH_LARGE_SEND_NO) {
885 card->options.large_send = QETH_LARGE_SEND_EDDP;
886 dev->features |= NETIF_F_TSO;
889 dev->features &= ~NETIF_F_TSO;
890 card->options.large_send = QETH_LARGE_SEND_NO;
895 static struct ethtool_ops qeth_l2_ethtool_ops = {
896 .get_link = ethtool_op_get_link,
897 .get_tx_csum = ethtool_op_get_tx_csum,
898 .set_tx_csum = ethtool_op_set_tx_hw_csum,
899 .get_sg = ethtool_op_get_sg,
900 .set_sg = ethtool_op_set_sg,
901 .get_tso = ethtool_op_get_tso,
902 .set_tso = qeth_l2_ethtool_set_tso,
903 .get_strings = qeth_core_get_strings,
904 .get_ethtool_stats = qeth_core_get_ethtool_stats,
905 .get_stats_count = qeth_core_get_stats_count,
906 .get_drvinfo = qeth_core_get_drvinfo,
907 .get_settings = qeth_core_ethtool_get_settings,
910 static struct ethtool_ops qeth_l2_osn_ops = {
911 .get_strings = qeth_core_get_strings,
912 .get_ethtool_stats = qeth_core_get_ethtool_stats,
913 .get_stats_count = qeth_core_get_stats_count,
914 .get_drvinfo = qeth_core_get_drvinfo,
917 static int qeth_l2_setup_netdev(struct qeth_card *card)
919 switch (card->info.type) {
920 case QETH_CARD_TYPE_OSAE:
921 card->dev = alloc_etherdev(0);
923 case QETH_CARD_TYPE_IQD:
924 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
926 case QETH_CARD_TYPE_OSN:
927 card->dev = alloc_netdev(0, "osn%d", ether_setup);
928 card->dev->flags |= IFF_NOARP;
931 card->dev = alloc_etherdev(0);
937 card->dev->ml_priv = card;
938 card->dev->tx_timeout = &qeth_tx_timeout;
939 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
940 card->dev->open = qeth_l2_open;
941 card->dev->stop = qeth_l2_stop;
942 card->dev->hard_start_xmit = qeth_l2_hard_start_xmit;
943 card->dev->do_ioctl = qeth_l2_do_ioctl;
944 card->dev->get_stats = qeth_get_stats;
945 card->dev->change_mtu = qeth_change_mtu;
946 card->dev->set_multicast_list = qeth_l2_set_multicast_list;
947 card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid;
948 card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid;
949 card->dev->set_mac_address = qeth_l2_set_mac_address;
950 card->dev->mtu = card->info.initial_mtu;
951 if (card->info.type != QETH_CARD_TYPE_OSN)
952 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
954 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
955 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
956 card->info.broadcast_capable = 1;
957 qeth_l2_request_initial_mac(card);
958 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
959 return register_netdev(card->dev);
962 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
964 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
966 enum qeth_card_states recover_flag;
969 QETH_DBF_TEXT(SETUP, 2, "setonlin");
970 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
972 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
973 recover_flag = card->state;
974 rc = ccw_device_set_online(CARD_RDEV(card));
976 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
979 rc = ccw_device_set_online(CARD_WDEV(card));
981 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
984 rc = ccw_device_set_online(CARD_DDEV(card));
986 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
990 rc = qeth_core_hardsetup_card(card);
992 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
996 if (!card->dev && qeth_l2_setup_netdev(card))
999 if (card->info.type != QETH_CARD_TYPE_OSN)
1000 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1002 card->state = CARD_STATE_HARDSETUP;
1003 qeth_print_status_message(card);
1006 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1008 rc = qeth_send_startlan(card);
1010 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1012 PRINT_WARN("LAN on card %s if offline! "
1013 "Waiting for STARTLAN from card.\n",
1015 card->lan_online = 0;
1019 card->lan_online = 1;
1021 if (card->info.type != QETH_CARD_TYPE_OSN) {
1022 qeth_set_large_send(card, card->options.large_send);
1023 qeth_l2_process_vlans(card, 0);
1026 netif_tx_disable(card->dev);
1028 rc = qeth_init_qdio_queues(card);
1030 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1033 card->state = CARD_STATE_SOFTSETUP;
1034 netif_carrier_on(card->dev);
1036 qeth_set_allowed_threads(card, 0xffffffff, 0);
1037 if (recover_flag == CARD_STATE_RECOVER) {
1038 if (recovery_mode &&
1039 card->info.type != QETH_CARD_TYPE_OSN) {
1040 qeth_l2_open(card->dev);
1043 dev_open(card->dev);
1046 /* this also sets saved unicast addresses */
1047 qeth_l2_set_multicast_list(card->dev);
1049 /* let user_space know that device is online */
1050 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1053 card->use_hard_stop = 1;
1054 qeth_l2_stop_card(card, 0);
1055 ccw_device_set_offline(CARD_DDEV(card));
1056 ccw_device_set_offline(CARD_WDEV(card));
1057 ccw_device_set_offline(CARD_RDEV(card));
1058 if (recover_flag == CARD_STATE_RECOVER)
1059 card->state = CARD_STATE_RECOVER;
1061 card->state = CARD_STATE_DOWN;
1065 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1067 return __qeth_l2_set_online(gdev, 0);
1070 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1073 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1074 int rc = 0, rc2 = 0, rc3 = 0;
1075 enum qeth_card_states recover_flag;
1077 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1078 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1080 if (card->dev && netif_carrier_ok(card->dev))
1081 netif_carrier_off(card->dev);
1082 recover_flag = card->state;
1083 qeth_l2_stop_card(card, recovery_mode);
1084 rc = ccw_device_set_offline(CARD_DDEV(card));
1085 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1086 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1088 rc = (rc2) ? rc2 : rc3;
1090 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1091 if (recover_flag == CARD_STATE_UP)
1092 card->state = CARD_STATE_RECOVER;
1093 /* let user_space know that device is offline */
1094 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1098 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1100 return __qeth_l2_set_offline(cgdev, 0);
1103 static int qeth_l2_recover(void *ptr)
1105 struct qeth_card *card;
1108 card = (struct qeth_card *) ptr;
1109 QETH_DBF_TEXT(TRACE, 2, "recover1");
1110 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
1111 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1113 QETH_DBF_TEXT(TRACE, 2, "recover2");
1114 PRINT_WARN("Recovery of device %s started ...\n",
1116 card->use_hard_stop = 1;
1117 __qeth_l2_set_offline(card->gdev, 1);
1118 rc = __qeth_l2_set_online(card->gdev, 1);
1119 /* don't run another scheduled recovery */
1120 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1121 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1123 PRINT_INFO("Device %s successfully recovered!\n",
1127 dev_close(card->dev);
1129 PRINT_INFO("Device %s could not be recovered!\n",
1135 static int __init qeth_l2_init(void)
1137 PRINT_INFO("register layer 2 discipline\n");
1141 static void __exit qeth_l2_exit(void)
1143 PRINT_INFO("unregister layer 2 discipline\n");
1146 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1148 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1149 qeth_qdio_clear_card(card, 0);
1150 qeth_clear_qdio_buffers(card);
1153 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1154 .probe = qeth_l2_probe_device,
1155 .remove = qeth_l2_remove_device,
1156 .set_online = qeth_l2_set_online,
1157 .set_offline = qeth_l2_set_offline,
1158 .shutdown = qeth_l2_shutdown,
1160 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1162 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1163 struct qeth_cmd_buffer *iob)
1165 unsigned long flags;
1168 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
1170 wait_event(card->wait_q,
1171 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1172 qeth_prepare_control_data(card, len, iob);
1173 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
1174 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1175 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1176 (addr_t) iob, 0, 0);
1177 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1179 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1180 "ccw_device_start rc = %i\n", rc);
1181 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1182 qeth_release_buffer(iob->channel, iob);
1183 atomic_set(&card->write.irq_pending, 0);
1184 wake_up(&card->wait_q);
1189 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1190 struct qeth_cmd_buffer *iob, int data_len)
1194 QETH_DBF_TEXT(TRACE, 4, "osndipa");
1196 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1197 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1199 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1200 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1201 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1202 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1203 return qeth_osn_send_control_data(card, s1, iob);
1206 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1208 struct qeth_cmd_buffer *iob;
1209 struct qeth_card *card;
1212 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
1215 card = dev->ml_priv;
1218 if ((card->state != CARD_STATE_UP) &&
1219 (card->state != CARD_STATE_SOFTSETUP))
1221 iob = qeth_wait_for_buffer(&card->write);
1222 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1223 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1226 EXPORT_SYMBOL(qeth_osn_assist);
1228 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1229 int (*assist_cb)(struct net_device *, void *),
1230 int (*data_cb)(struct sk_buff *))
1232 struct qeth_card *card;
1234 QETH_DBF_TEXT(TRACE, 2, "osnreg");
1235 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1238 card = (*dev)->ml_priv;
1241 if ((assist_cb == NULL) || (data_cb == NULL))
1243 card->osn_info.assist_cb = assist_cb;
1244 card->osn_info.data_cb = data_cb;
1247 EXPORT_SYMBOL(qeth_osn_register);
1249 void qeth_osn_deregister(struct net_device *dev)
1251 struct qeth_card *card;
1253 QETH_DBF_TEXT(TRACE, 2, "osndereg");
1256 card = dev->ml_priv;
1259 card->osn_info.assist_cb = NULL;
1260 card->osn_info.data_cb = NULL;
1263 EXPORT_SYMBOL(qeth_osn_deregister);
1265 module_init(qeth_l2_init);
1266 module_exit(qeth_l2_exit);
1267 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1268 MODULE_DESCRIPTION("qeth layer 2 discipline");
1269 MODULE_LICENSE("GPL");