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 #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/etherdevice.h>
20 #include <linux/mii.h>
23 #include <asm/s390_rdev.h>
25 #include "qeth_core.h"
26 #include "qeth_core_offl.h"
28 static int qeth_l2_set_offline(struct ccwgroup_device *);
29 static int qeth_l2_stop(struct net_device *);
30 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
31 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
33 int (*reply_cb) (struct qeth_card *,
36 static void qeth_l2_set_multicast_list(struct net_device *);
37 static int qeth_l2_recover(void *);
39 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
41 struct qeth_card *card = dev->ml_priv;
42 struct mii_ioctl_data *mii_data;
48 if ((card->state != CARD_STATE_UP) &&
49 (card->state != CARD_STATE_SOFTSETUP))
52 if (card->info.type == QETH_CARD_TYPE_OSN)
56 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
57 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
59 case SIOC_QETH_GET_CARD_TYPE:
60 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
66 mii_data = if_mii(rq);
70 mii_data = if_mii(rq);
71 if (mii_data->phy_id != 0)
74 mii_data->val_out = qeth_mdio_read(dev,
75 mii_data->phy_id, mii_data->reg_num);
81 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
85 static int qeth_l2_verify_dev(struct net_device *dev)
87 struct qeth_card *card;
91 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
92 list_for_each_entry(card, &qeth_core_card_list.list, list) {
93 if (card->dev == dev) {
98 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
103 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
105 struct qeth_card *card;
106 struct net_device *ndev;
109 struct ccw_dev_id read_devid;
112 memcpy(&temp_dev_no, read_dev_no, 2);
113 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
114 list_for_each_entry(card, &qeth_core_card_list.list, list) {
115 ccw_device_get_id(CARD_RDEV(card), &read_devid);
116 if (read_devid.devno == temp_dev_no) {
121 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
125 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
126 struct qeth_reply *reply,
129 struct qeth_ipa_cmd *cmd;
132 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
133 cmd = (struct qeth_ipa_cmd *) data;
134 mac = &cmd->data.setdelmac.mac[0];
135 /* MAC already registered, needed in couple/uncouple case */
136 if (cmd->hdr.return_code == 0x2005) {
137 QETH_DBF_MESSAGE(2, "Group MAC %02x:%02x:%02x:%02x:%02x:%02x "
138 "already existing on %s \n",
139 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
140 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 "
145 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
146 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
147 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
151 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
153 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
154 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
155 qeth_l2_send_setgroupmac_cb);
158 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
159 struct qeth_reply *reply,
162 struct qeth_ipa_cmd *cmd;
165 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
166 cmd = (struct qeth_ipa_cmd *) data;
167 mac = &cmd->data.setdelmac.mac[0];
168 if (cmd->hdr.return_code)
169 QETH_DBF_MESSAGE(2, "Could not delete group MAC "
170 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
171 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
172 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
176 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
178 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
179 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
180 qeth_l2_send_delgroupmac_cb);
183 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
185 struct qeth_mc_mac *mc;
188 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
193 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
194 mc->mc_addrlen = OSA_ADDR_LEN;
198 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
201 rc = qeth_l2_send_setgroupmac(card, mac);
205 list_add_tail(&mc->list, &card->mc_list);
210 static void qeth_l2_del_all_mc(struct qeth_card *card)
212 struct qeth_mc_mac *mc, *tmp;
214 spin_lock_bh(&card->mclock);
215 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
217 qeth_l2_send_setdelmac(card, mc->mc_addr,
218 IPA_CMD_DELVMAC, NULL);
220 qeth_l2_send_delgroupmac(card, mc->mc_addr);
224 spin_unlock_bh(&card->mclock);
227 static void qeth_l2_get_packet_type(struct qeth_card *card,
228 struct qeth_hdr *hdr, struct sk_buff *skb)
232 if (!memcmp(skb->data + QETH_HEADER_SIZE,
233 skb->dev->broadcast, 6)) {
235 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
238 hdr_mac = *((__u16 *)skb->data);
240 switch (card->info.link_type) {
241 case QETH_LINK_TYPE_HSTR:
242 case QETH_LINK_TYPE_LANE_TR:
243 if ((hdr_mac == QETH_TR_MAC_NC) ||
244 (hdr_mac == QETH_TR_MAC_C))
245 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
247 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
249 /* eth or so multicast? */
251 if ((hdr_mac == QETH_ETH_MAC_V4) ||
252 (hdr_mac == QETH_ETH_MAC_V6))
253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
255 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
259 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
260 struct sk_buff *skb, int ipv, int cast_type)
262 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
264 memset(hdr, 0, sizeof(struct qeth_hdr));
265 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
267 /* set byte byte 3 to casting flags */
268 if (cast_type == RTN_MULTICAST)
269 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
270 else if (cast_type == RTN_BROADCAST)
271 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
273 qeth_l2_get_packet_type(card, hdr, skb);
275 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
276 /* VSWITCH relies on the VLAN
277 * information to be present in
279 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
280 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
281 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
285 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
286 struct qeth_reply *reply, unsigned long data)
288 struct qeth_ipa_cmd *cmd;
290 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
291 cmd = (struct qeth_ipa_cmd *) data;
292 if (cmd->hdr.return_code) {
293 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
294 "Continuing\n", cmd->data.setdelvlan.vlan_id,
295 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
296 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
297 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
298 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
303 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
304 enum qeth_ipa_cmds ipacmd)
306 struct qeth_ipa_cmd *cmd;
307 struct qeth_cmd_buffer *iob;
309 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
310 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
311 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
312 cmd->data.setdelvlan.vlan_id = i;
313 return qeth_send_ipa_cmd(card, iob,
314 qeth_l2_send_setdelvlan_cb, NULL);
317 static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
319 struct qeth_vlan_vid *id;
320 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
321 spin_lock_bh(&card->vlanlock);
322 list_for_each_entry(id, &card->vid_list, list) {
324 qeth_l2_send_setdelvlan(card, id->vid,
327 qeth_l2_send_setdelvlan(card, id->vid,
330 spin_unlock_bh(&card->vlanlock);
333 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
335 struct qeth_card *card = dev->ml_priv;
336 struct qeth_vlan_vid *id;
338 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
339 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
342 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
343 spin_lock_bh(&card->vlanlock);
344 list_add_tail(&id->list, &card->vid_list);
345 spin_unlock_bh(&card->vlanlock);
349 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
351 struct qeth_vlan_vid *id, *tmpid = NULL;
352 struct qeth_card *card = dev->ml_priv;
354 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
355 spin_lock_bh(&card->vlanlock);
356 list_for_each_entry(id, &card->vid_list, list) {
357 if (id->vid == vid) {
363 spin_unlock_bh(&card->vlanlock);
365 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
368 qeth_l2_set_multicast_list(card->dev);
371 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
375 QETH_DBF_TEXT(SETUP , 2, "stopcard");
376 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
378 qeth_set_allowed_threads(card, 0, 1);
379 if (card->read.state == CH_STATE_UP &&
380 card->write.state == CH_STATE_UP &&
381 (card->state == CARD_STATE_UP)) {
383 card->info.type != QETH_CARD_TYPE_OSN) {
384 qeth_l2_stop(card->dev);
387 dev_close(card->dev);
390 if (!card->use_hard_stop) {
391 __u8 *mac = &card->dev->dev_addr[0];
392 rc = qeth_l2_send_delmac(card, mac);
393 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
395 card->state = CARD_STATE_SOFTSETUP;
397 if (card->state == CARD_STATE_SOFTSETUP) {
398 qeth_l2_process_vlans(card, 1);
399 if (!card->use_hard_stop)
400 qeth_l2_del_all_mc(card);
401 qeth_clear_ipacmd_list(card);
402 card->state = CARD_STATE_HARDSETUP;
404 if (card->state == CARD_STATE_HARDSETUP) {
405 qeth_qdio_clear_card(card, 0);
406 qeth_clear_qdio_buffers(card);
407 qeth_clear_working_pool_list(card);
408 card->state = CARD_STATE_DOWN;
410 if (card->state == CARD_STATE_DOWN) {
411 qeth_clear_cmd_buffers(&card->read);
412 qeth_clear_cmd_buffers(&card->write);
414 card->use_hard_stop = 0;
418 static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
419 struct qeth_qdio_buffer *buf, int index)
421 struct qdio_buffer_element *element;
423 struct qeth_hdr *hdr;
427 /* get first element of current buffer */
428 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
430 if (card->options.performance_stats)
431 card->perf_stats.bufs_rec++;
432 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
434 skb->dev = card->dev;
436 if (!(card->dev->flags & IFF_UP)) {
437 dev_kfree_skb_any(skb);
441 switch (hdr->hdr.l2.id) {
442 case QETH_HEADER_TYPE_LAYER2:
443 skb->pkt_type = PACKET_HOST;
444 skb->protocol = eth_type_trans(skb, skb->dev);
445 if (card->options.checksum_type == NO_CHECKSUMMING)
446 skb->ip_summed = CHECKSUM_UNNECESSARY;
448 skb->ip_summed = CHECKSUM_NONE;
449 if (skb->protocol == htons(ETH_P_802_2))
450 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
454 case QETH_HEADER_TYPE_OSN:
455 if (card->info.type == QETH_CARD_TYPE_OSN) {
456 skb_push(skb, sizeof(struct qeth_hdr));
457 skb_copy_to_linear_data(skb, hdr,
458 sizeof(struct qeth_hdr));
460 card->osn_info.data_cb(skb);
465 dev_kfree_skb_any(skb);
466 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
467 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
470 card->dev->last_rx = jiffies;
471 card->stats.rx_packets++;
472 card->stats.rx_bytes += len;
476 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
477 enum qeth_ipa_cmds ipacmd,
478 int (*reply_cb) (struct qeth_card *,
482 struct qeth_ipa_cmd *cmd;
483 struct qeth_cmd_buffer *iob;
485 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
486 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
487 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
488 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
489 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
490 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
493 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
494 struct qeth_reply *reply,
497 struct qeth_ipa_cmd *cmd;
499 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
500 cmd = (struct qeth_ipa_cmd *) data;
501 if (cmd->hdr.return_code) {
502 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
503 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
504 cmd->hdr.return_code = -EIO;
506 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
507 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
509 dev_info(&card->gdev->dev,
510 "MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
511 "successfully registered on device %s\n",
512 card->dev->dev_addr[0], card->dev->dev_addr[1],
513 card->dev->dev_addr[2], card->dev->dev_addr[3],
514 card->dev->dev_addr[4], card->dev->dev_addr[5],
520 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
522 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
523 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
524 qeth_l2_send_setmac_cb);
527 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
528 struct qeth_reply *reply,
531 struct qeth_ipa_cmd *cmd;
533 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
534 cmd = (struct qeth_ipa_cmd *) data;
535 if (cmd->hdr.return_code) {
536 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
537 cmd->hdr.return_code = -EIO;
540 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
545 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
547 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
548 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
550 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
551 qeth_l2_send_delmac_cb);
554 static int qeth_l2_request_initial_mac(struct qeth_card *card)
557 char vendor_pre[] = {0x02, 0x00, 0x00};
559 QETH_DBF_TEXT(SETUP, 2, "doL2init");
560 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
562 rc = qeth_query_setadapterparms(card);
564 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
565 "device %s: x%x\n", CARD_BUS_ID(card), rc);
568 if ((card->info.type == QETH_CARD_TYPE_IQD) ||
569 (card->info.guestlan)) {
570 rc = qeth_setadpparms_change_macaddr(card);
572 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
573 "device %s: x%x\n", CARD_BUS_ID(card), rc);
574 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
577 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
579 random_ether_addr(card->dev->dev_addr);
580 memcpy(card->dev->dev_addr, vendor_pre, 3);
585 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
587 struct sockaddr *addr = p;
588 struct qeth_card *card = dev->ml_priv;
591 QETH_DBF_TEXT(TRACE, 3, "setmac");
593 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
594 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
598 if (card->info.type == QETH_CARD_TYPE_OSN) {
599 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
602 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
603 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
604 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
606 rc = qeth_l2_send_setmac(card, addr->sa_data);
610 static void qeth_l2_set_multicast_list(struct net_device *dev)
612 struct qeth_card *card = dev->ml_priv;
613 struct dev_addr_list *dm;
615 if (card->info.type == QETH_CARD_TYPE_OSN)
618 QETH_DBF_TEXT(TRACE, 3, "setmulti");
619 qeth_l2_del_all_mc(card);
620 spin_lock_bh(&card->mclock);
621 for (dm = dev->mc_list; dm; dm = dm->next)
622 qeth_l2_add_mc(card, dm->da_addr, 0);
624 for (dm = dev->uc_list; dm; dm = dm->next)
625 qeth_l2_add_mc(card, dm->da_addr, 1);
627 spin_unlock_bh(&card->mclock);
628 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
630 qeth_setadp_promisc_mode(card);
633 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
636 struct qeth_hdr *hdr = NULL;
638 struct qeth_card *card = dev->ml_priv;
639 struct sk_buff *new_skb = skb;
640 int ipv = qeth_get_ip_version(skb);
641 int cast_type = qeth_get_cast_type(card, skb);
642 struct qeth_qdio_out_q *queue = card->qdio.out_qs
643 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
644 int tx_bytes = skb->len;
645 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
646 struct qeth_eddp_context *ctx = NULL;
647 int data_offset = -1;
648 int elements_needed = 0;
651 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
652 card->stats.tx_carrier_errors++;
656 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
657 (skb->protocol == htons(ETH_P_IPV6)))
660 if (card->options.performance_stats) {
661 card->perf_stats.outbound_cnt++;
662 card->perf_stats.outbound_start_time = qeth_get_micros();
664 netif_stop_queue(dev);
667 large_send = QETH_LARGE_SEND_EDDP;
669 if (card->info.type == QETH_CARD_TYPE_OSN)
670 hdr = (struct qeth_hdr *)skb->data;
672 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
673 (skb_shinfo(skb)->nr_frags == 0)) {
675 data_offset = ETH_HLEN;
677 hdr = kmem_cache_alloc(qeth_core_header_cache,
682 skb_reset_mac_header(new_skb);
683 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
684 hdr->hdr.l2.pkt_length = new_skb->len;
685 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
686 skb_mac_header(new_skb), ETH_HLEN);
688 /* create a clone with writeable headroom */
689 new_skb = skb_realloc_headroom(skb,
690 sizeof(struct qeth_hdr));
693 hdr = (struct qeth_hdr *)skb_push(new_skb,
694 sizeof(struct qeth_hdr));
695 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
696 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
700 if (large_send == QETH_LARGE_SEND_EDDP) {
701 ctx = qeth_eddp_create_context(card, new_skb, hdr,
702 skb->sk->sk_protocol);
704 QETH_DBF_MESSAGE(2, "could not create eddp context\n");
708 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
711 if (data_offset >= 0)
712 kmem_cache_free(qeth_core_header_cache, hdr);
717 if ((large_send == QETH_LARGE_SEND_NO) &&
718 (skb->ip_summed == CHECKSUM_PARTIAL))
719 qeth_tx_csum(new_skb);
721 if (card->info.type != QETH_CARD_TYPE_IQD)
722 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
725 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
726 elements, ctx, data_offset, hd_len);
728 card->stats.tx_packets++;
729 card->stats.tx_bytes += tx_bytes;
731 dev_kfree_skb_any(skb);
732 if (card->options.performance_stats) {
733 if (large_send != QETH_LARGE_SEND_NO) {
734 card->perf_stats.large_send_bytes += tx_bytes;
735 card->perf_stats.large_send_cnt++;
737 if (skb_shinfo(new_skb)->nr_frags > 0) {
738 card->perf_stats.sg_skbs_sent++;
739 /* nr_frags + skb->data */
740 card->perf_stats.sg_frags_sent +=
741 skb_shinfo(new_skb)->nr_frags + 1;
746 qeth_eddp_put_context(ctx);
747 dev_kfree_skb_any(new_skb);
751 qeth_eddp_put_context(ctx);
753 if (data_offset >= 0)
754 kmem_cache_free(qeth_core_header_cache, hdr);
758 dev_kfree_skb_any(new_skb);
759 return NETDEV_TX_BUSY;
764 netif_wake_queue(dev);
765 if (card->options.performance_stats)
766 card->perf_stats.outbound_time += qeth_get_micros() -
767 card->perf_stats.outbound_start_time;
771 card->stats.tx_dropped++;
772 card->stats.tx_errors++;
773 if ((new_skb != skb) && new_skb)
774 dev_kfree_skb_any(new_skb);
775 dev_kfree_skb_any(skb);
776 netif_wake_queue(dev);
780 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
781 unsigned int qdio_err, unsigned int queue,
782 int first_element, int count, unsigned long card_ptr)
784 struct net_device *net_dev;
785 struct qeth_card *card;
786 struct qeth_qdio_buffer *buffer;
790 card = (struct qeth_card *) card_ptr;
792 if (card->options.performance_stats) {
793 card->perf_stats.inbound_cnt++;
794 card->perf_stats.inbound_start_time = qeth_get_micros();
796 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
797 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
798 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
799 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
801 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
802 qeth_schedule_recovery(card);
805 for (i = first_element; i < (first_element + count); ++i) {
806 index = i % QDIO_MAX_BUFFERS_PER_Q;
807 buffer = &card->qdio.in_q->bufs[index];
809 qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr")))
810 qeth_l2_process_inbound_buffer(card, buffer, index);
811 /* clear buffer and give back to hardware */
812 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
813 qeth_queue_input_buffer(card, index);
815 if (card->options.performance_stats)
816 card->perf_stats.inbound_time += qeth_get_micros() -
817 card->perf_stats.inbound_start_time;
820 static int qeth_l2_open(struct net_device *dev)
822 struct qeth_card *card = dev->ml_priv;
824 QETH_DBF_TEXT(TRACE, 4, "qethopen");
825 if (card->state != CARD_STATE_SOFTSETUP)
828 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
829 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
830 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
833 card->data.state = CH_STATE_UP;
834 card->state = CARD_STATE_UP;
835 netif_start_queue(dev);
837 if (!card->lan_online && netif_carrier_ok(dev))
838 netif_carrier_off(dev);
843 static int qeth_l2_stop(struct net_device *dev)
845 struct qeth_card *card = dev->ml_priv;
847 QETH_DBF_TEXT(TRACE, 4, "qethstop");
848 netif_tx_disable(dev);
849 if (card->state == CARD_STATE_UP)
850 card->state = CARD_STATE_SOFTSETUP;
854 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
856 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
858 INIT_LIST_HEAD(&card->vid_list);
859 INIT_LIST_HEAD(&card->mc_list);
860 card->options.layer2 = 1;
861 card->discipline.input_handler = (qdio_handler_t *)
862 qeth_l2_qdio_input_handler;
863 card->discipline.output_handler = (qdio_handler_t *)
864 qeth_qdio_output_handler;
865 card->discipline.recover = qeth_l2_recover;
869 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
871 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
873 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
875 if (cgdev->state == CCWGROUP_ONLINE) {
876 card->use_hard_stop = 1;
877 qeth_l2_set_offline(cgdev);
881 unregister_netdev(card->dev);
885 qeth_l2_del_all_mc(card);
889 static int qeth_l2_ethtool_set_tso(struct net_device *dev, u32 data)
891 struct qeth_card *card = dev->ml_priv;
894 if (card->options.large_send == QETH_LARGE_SEND_NO) {
895 card->options.large_send = QETH_LARGE_SEND_EDDP;
896 dev->features |= NETIF_F_TSO;
899 dev->features &= ~NETIF_F_TSO;
900 card->options.large_send = QETH_LARGE_SEND_NO;
905 static struct ethtool_ops qeth_l2_ethtool_ops = {
906 .get_link = ethtool_op_get_link,
907 .get_tx_csum = ethtool_op_get_tx_csum,
908 .set_tx_csum = ethtool_op_set_tx_hw_csum,
909 .get_sg = ethtool_op_get_sg,
910 .set_sg = ethtool_op_set_sg,
911 .get_tso = ethtool_op_get_tso,
912 .set_tso = qeth_l2_ethtool_set_tso,
913 .get_strings = qeth_core_get_strings,
914 .get_ethtool_stats = qeth_core_get_ethtool_stats,
915 .get_stats_count = qeth_core_get_stats_count,
916 .get_drvinfo = qeth_core_get_drvinfo,
917 .get_settings = qeth_core_ethtool_get_settings,
920 static struct ethtool_ops qeth_l2_osn_ops = {
921 .get_strings = qeth_core_get_strings,
922 .get_ethtool_stats = qeth_core_get_ethtool_stats,
923 .get_stats_count = qeth_core_get_stats_count,
924 .get_drvinfo = qeth_core_get_drvinfo,
927 static int qeth_l2_setup_netdev(struct qeth_card *card)
929 switch (card->info.type) {
930 case QETH_CARD_TYPE_OSAE:
931 card->dev = alloc_etherdev(0);
933 case QETH_CARD_TYPE_IQD:
934 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
936 case QETH_CARD_TYPE_OSN:
937 card->dev = alloc_netdev(0, "osn%d", ether_setup);
938 card->dev->flags |= IFF_NOARP;
941 card->dev = alloc_etherdev(0);
947 card->dev->ml_priv = card;
948 card->dev->tx_timeout = &qeth_tx_timeout;
949 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
950 card->dev->open = qeth_l2_open;
951 card->dev->stop = qeth_l2_stop;
952 card->dev->hard_start_xmit = qeth_l2_hard_start_xmit;
953 card->dev->do_ioctl = qeth_l2_do_ioctl;
954 card->dev->get_stats = qeth_get_stats;
955 card->dev->change_mtu = qeth_change_mtu;
956 card->dev->set_multicast_list = qeth_l2_set_multicast_list;
957 card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid;
958 card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid;
959 card->dev->set_mac_address = qeth_l2_set_mac_address;
960 card->dev->mtu = card->info.initial_mtu;
961 if (card->info.type != QETH_CARD_TYPE_OSN)
962 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
964 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
965 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
966 card->info.broadcast_capable = 1;
967 qeth_l2_request_initial_mac(card);
968 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
969 return register_netdev(card->dev);
972 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
974 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
976 enum qeth_card_states recover_flag;
979 QETH_DBF_TEXT(SETUP, 2, "setonlin");
980 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
982 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
983 recover_flag = card->state;
984 rc = ccw_device_set_online(CARD_RDEV(card));
986 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
989 rc = ccw_device_set_online(CARD_WDEV(card));
991 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
994 rc = ccw_device_set_online(CARD_DDEV(card));
996 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1000 rc = qeth_core_hardsetup_card(card);
1002 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1006 if (!card->dev && qeth_l2_setup_netdev(card))
1009 if (card->info.type != QETH_CARD_TYPE_OSN)
1010 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1012 card->state = CARD_STATE_HARDSETUP;
1013 qeth_print_status_message(card);
1016 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1018 rc = qeth_send_startlan(card);
1020 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1022 dev_warn(&card->gdev->dev,
1023 "The LAN is offline\n");
1024 card->lan_online = 0;
1028 card->lan_online = 1;
1030 if (card->info.type != QETH_CARD_TYPE_OSN) {
1031 qeth_set_large_send(card, card->options.large_send);
1032 qeth_l2_process_vlans(card, 0);
1035 netif_tx_disable(card->dev);
1037 rc = qeth_init_qdio_queues(card);
1039 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1042 card->state = CARD_STATE_SOFTSETUP;
1043 netif_carrier_on(card->dev);
1045 qeth_set_allowed_threads(card, 0xffffffff, 0);
1046 if (recover_flag == CARD_STATE_RECOVER) {
1047 if (recovery_mode &&
1048 card->info.type != QETH_CARD_TYPE_OSN) {
1049 qeth_l2_open(card->dev);
1052 dev_open(card->dev);
1055 /* this also sets saved unicast addresses */
1056 qeth_l2_set_multicast_list(card->dev);
1058 /* let user_space know that device is online */
1059 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1062 card->use_hard_stop = 1;
1063 qeth_l2_stop_card(card, 0);
1064 ccw_device_set_offline(CARD_DDEV(card));
1065 ccw_device_set_offline(CARD_WDEV(card));
1066 ccw_device_set_offline(CARD_RDEV(card));
1067 if (recover_flag == CARD_STATE_RECOVER)
1068 card->state = CARD_STATE_RECOVER;
1070 card->state = CARD_STATE_DOWN;
1074 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1076 return __qeth_l2_set_online(gdev, 0);
1079 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1082 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1083 int rc = 0, rc2 = 0, rc3 = 0;
1084 enum qeth_card_states recover_flag;
1086 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1087 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1089 if (card->dev && netif_carrier_ok(card->dev))
1090 netif_carrier_off(card->dev);
1091 recover_flag = card->state;
1092 qeth_l2_stop_card(card, recovery_mode);
1093 rc = ccw_device_set_offline(CARD_DDEV(card));
1094 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1095 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1097 rc = (rc2) ? rc2 : rc3;
1099 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1100 if (recover_flag == CARD_STATE_UP)
1101 card->state = CARD_STATE_RECOVER;
1102 /* let user_space know that device is offline */
1103 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1107 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1109 return __qeth_l2_set_offline(cgdev, 0);
1112 static int qeth_l2_recover(void *ptr)
1114 struct qeth_card *card;
1117 card = (struct qeth_card *) ptr;
1118 QETH_DBF_TEXT(TRACE, 2, "recover1");
1119 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
1120 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1122 QETH_DBF_TEXT(TRACE, 2, "recover2");
1123 dev_warn(&card->gdev->dev,
1124 "A recovery process has been started for the device\n");
1125 card->use_hard_stop = 1;
1126 __qeth_l2_set_offline(card->gdev, 1);
1127 rc = __qeth_l2_set_online(card->gdev, 1);
1128 /* don't run another scheduled recovery */
1129 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1130 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1132 dev_info(&card->gdev->dev,
1133 "Device successfully recovered!\n");
1136 dev_close(card->dev);
1138 dev_warn(&card->gdev->dev, "The qeth device driver "
1139 "failed to recover an error on the device\n");
1144 static int __init qeth_l2_init(void)
1146 pr_info("register layer 2 discipline\n");
1150 static void __exit qeth_l2_exit(void)
1152 pr_info("unregister layer 2 discipline\n");
1155 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1157 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1158 qeth_qdio_clear_card(card, 0);
1159 qeth_clear_qdio_buffers(card);
1162 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1163 .probe = qeth_l2_probe_device,
1164 .remove = qeth_l2_remove_device,
1165 .set_online = qeth_l2_set_online,
1166 .set_offline = qeth_l2_set_offline,
1167 .shutdown = qeth_l2_shutdown,
1169 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1171 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1172 struct qeth_cmd_buffer *iob)
1174 unsigned long flags;
1177 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
1179 wait_event(card->wait_q,
1180 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1181 qeth_prepare_control_data(card, len, iob);
1182 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
1183 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1184 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1185 (addr_t) iob, 0, 0);
1186 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1188 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1189 "ccw_device_start rc = %i\n", rc);
1190 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1191 qeth_release_buffer(iob->channel, iob);
1192 atomic_set(&card->write.irq_pending, 0);
1193 wake_up(&card->wait_q);
1198 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1199 struct qeth_cmd_buffer *iob, int data_len)
1203 QETH_DBF_TEXT(TRACE, 4, "osndipa");
1205 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1206 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1208 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1209 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1210 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1211 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1212 return qeth_osn_send_control_data(card, s1, iob);
1215 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1217 struct qeth_cmd_buffer *iob;
1218 struct qeth_card *card;
1221 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
1224 card = dev->ml_priv;
1227 if ((card->state != CARD_STATE_UP) &&
1228 (card->state != CARD_STATE_SOFTSETUP))
1230 iob = qeth_wait_for_buffer(&card->write);
1231 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1232 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1235 EXPORT_SYMBOL(qeth_osn_assist);
1237 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1238 int (*assist_cb)(struct net_device *, void *),
1239 int (*data_cb)(struct sk_buff *))
1241 struct qeth_card *card;
1243 QETH_DBF_TEXT(TRACE, 2, "osnreg");
1244 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1247 card = (*dev)->ml_priv;
1250 if ((assist_cb == NULL) || (data_cb == NULL))
1252 card->osn_info.assist_cb = assist_cb;
1253 card->osn_info.data_cb = data_cb;
1256 EXPORT_SYMBOL(qeth_osn_register);
1258 void qeth_osn_deregister(struct net_device *dev)
1260 struct qeth_card *card;
1262 QETH_DBF_TEXT(TRACE, 2, "osndereg");
1265 card = dev->ml_priv;
1268 card->osn_info.assist_cb = NULL;
1269 card->osn_info.data_cb = NULL;
1272 EXPORT_SYMBOL(qeth_osn_deregister);
1274 module_init(qeth_l2_init);
1275 module_exit(qeth_l2_exit);
1276 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1277 MODULE_DESCRIPTION("qeth layer 2 discipline");
1278 MODULE_LICENSE("GPL");