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
= netdev_priv(dev
);
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 %02x:%02x:%02x:%02x:%02x:%02x "
135 "already existing on %s \n",
136 mac
[0], mac
[1], mac
[2], mac
[3], mac
[4], mac
[5],
137 QETH_CARD_IFNAME(card
));
138 cmd
->hdr
.return_code
= 0;
140 if (cmd
->hdr
.return_code
)
141 QETH_DBF_MESSAGE(2, "Could not set group MAC "
142 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
143 mac
[0], mac
[1], mac
[2], mac
[3], mac
[4], mac
[5],
144 QETH_CARD_IFNAME(card
), cmd
->hdr
.return_code
);
148 static int qeth_l2_send_setgroupmac(struct qeth_card
*card
, __u8
*mac
)
150 QETH_DBF_TEXT(TRACE
, 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_DBF_TEXT(TRACE
, 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 "
167 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
168 mac
[0], mac
[1], mac
[2], mac
[3], mac
[4], mac
[5],
169 QETH_CARD_IFNAME(card
), cmd
->hdr
.return_code
);
173 static int qeth_l2_send_delgroupmac(struct qeth_card
*card
, __u8
*mac
)
175 QETH_DBF_TEXT(TRACE
, 2, "L2Dgmac");
176 return qeth_l2_send_setdelmac(card
, mac
, IPA_CMD_DELGMAC
,
177 qeth_l2_send_delgroupmac_cb
);
180 static void qeth_l2_add_mc(struct qeth_card
*card
, __u8
*mac
)
182 struct qeth_mc_mac
*mc
;
184 mc
= kmalloc(sizeof(struct qeth_mc_mac
), GFP_ATOMIC
);
189 memcpy(mc
->mc_addr
, mac
, OSA_ADDR_LEN
);
190 mc
->mc_addrlen
= OSA_ADDR_LEN
;
192 if (!qeth_l2_send_setgroupmac(card
, mac
))
193 list_add_tail(&mc
->list
, &card
->mc_list
);
198 static void qeth_l2_del_all_mc(struct qeth_card
*card
)
200 struct qeth_mc_mac
*mc
, *tmp
;
202 spin_lock_bh(&card
->mclock
);
203 list_for_each_entry_safe(mc
, tmp
, &card
->mc_list
, list
) {
204 qeth_l2_send_delgroupmac(card
, mc
->mc_addr
);
208 spin_unlock_bh(&card
->mclock
);
211 static void qeth_l2_get_packet_type(struct qeth_card
*card
,
212 struct qeth_hdr
*hdr
, struct sk_buff
*skb
)
216 if (!memcmp(skb
->data
+ QETH_HEADER_SIZE
,
217 skb
->dev
->broadcast
, 6)) {
219 hdr
->hdr
.l2
.flags
[2] |= QETH_LAYER2_FLAG_BROADCAST
;
222 hdr_mac
= *((__u16
*)skb
->data
);
224 switch (card
->info
.link_type
) {
225 case QETH_LINK_TYPE_HSTR
:
226 case QETH_LINK_TYPE_LANE_TR
:
227 if ((hdr_mac
== QETH_TR_MAC_NC
) ||
228 (hdr_mac
== QETH_TR_MAC_C
))
229 hdr
->hdr
.l2
.flags
[2] |= QETH_LAYER2_FLAG_MULTICAST
;
231 hdr
->hdr
.l2
.flags
[2] |= QETH_LAYER2_FLAG_UNICAST
;
233 /* eth or so multicast? */
235 if ((hdr_mac
== QETH_ETH_MAC_V4
) ||
236 (hdr_mac
== QETH_ETH_MAC_V6
))
237 hdr
->hdr
.l2
.flags
[2] |= QETH_LAYER2_FLAG_MULTICAST
;
239 hdr
->hdr
.l2
.flags
[2] |= QETH_LAYER2_FLAG_UNICAST
;
243 static void qeth_l2_fill_header(struct qeth_card
*card
, struct qeth_hdr
*hdr
,
244 struct sk_buff
*skb
, int ipv
, int cast_type
)
246 struct vlan_ethhdr
*veth
= (struct vlan_ethhdr
*)((skb
->data
) +
249 memset(hdr
, 0, sizeof(struct qeth_hdr
));
250 hdr
->hdr
.l2
.id
= QETH_HEADER_TYPE_LAYER2
;
252 /* set byte byte 3 to casting flags */
253 if (cast_type
== RTN_MULTICAST
)
254 hdr
->hdr
.l2
.flags
[2] |= QETH_LAYER2_FLAG_MULTICAST
;
255 else if (cast_type
== RTN_BROADCAST
)
256 hdr
->hdr
.l2
.flags
[2] |= QETH_LAYER2_FLAG_BROADCAST
;
258 qeth_l2_get_packet_type(card
, hdr
, skb
);
260 hdr
->hdr
.l2
.pkt_length
= skb
->len
-QETH_HEADER_SIZE
;
261 /* VSWITCH relies on the VLAN
262 * information to be present in
264 if (veth
->h_vlan_proto
== __constant_htons(ETH_P_8021Q
)) {
265 hdr
->hdr
.l2
.flags
[2] |= QETH_LAYER2_FLAG_VLAN
;
266 hdr
->hdr
.l2
.vlan_id
= ntohs(veth
->h_vlan_TCI
);
270 static int qeth_l2_send_setdelvlan_cb(struct qeth_card
*card
,
271 struct qeth_reply
*reply
, unsigned long data
)
273 struct qeth_ipa_cmd
*cmd
;
275 QETH_DBF_TEXT(TRACE
, 2, "L2sdvcb");
276 cmd
= (struct qeth_ipa_cmd
*) data
;
277 if (cmd
->hdr
.return_code
) {
278 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
279 "Continuing\n", cmd
->data
.setdelvlan
.vlan_id
,
280 QETH_CARD_IFNAME(card
), cmd
->hdr
.return_code
);
281 QETH_DBF_TEXT_(TRACE
, 2, "L2VL%4x", cmd
->hdr
.command
);
282 QETH_DBF_TEXT_(TRACE
, 2, "L2%s", CARD_BUS_ID(card
));
283 QETH_DBF_TEXT_(TRACE
, 2, "err%d", cmd
->hdr
.return_code
);
288 static int qeth_l2_send_setdelvlan(struct qeth_card
*card
, __u16 i
,
289 enum qeth_ipa_cmds ipacmd
)
291 struct qeth_ipa_cmd
*cmd
;
292 struct qeth_cmd_buffer
*iob
;
294 QETH_DBF_TEXT_(TRACE
, 4, "L2sdv%x", ipacmd
);
295 iob
= qeth_get_ipacmd_buffer(card
, ipacmd
, QETH_PROT_IPV4
);
296 cmd
= (struct qeth_ipa_cmd
*)(iob
->data
+IPA_PDU_HEADER_SIZE
);
297 cmd
->data
.setdelvlan
.vlan_id
= i
;
298 return qeth_send_ipa_cmd(card
, iob
,
299 qeth_l2_send_setdelvlan_cb
, NULL
);
302 static void qeth_l2_process_vlans(struct qeth_card
*card
, int clear
)
304 struct qeth_vlan_vid
*id
;
305 QETH_DBF_TEXT(TRACE
, 3, "L2prcvln");
306 spin_lock_bh(&card
->vlanlock
);
307 list_for_each_entry(id
, &card
->vid_list
, list
) {
309 qeth_l2_send_setdelvlan(card
, id
->vid
,
312 qeth_l2_send_setdelvlan(card
, id
->vid
,
315 spin_unlock_bh(&card
->vlanlock
);
318 static void qeth_l2_vlan_rx_add_vid(struct net_device
*dev
, unsigned short vid
)
320 struct qeth_card
*card
= netdev_priv(dev
);
321 struct qeth_vlan_vid
*id
;
323 QETH_DBF_TEXT_(TRACE
, 4, "aid:%d", vid
);
324 id
= kmalloc(sizeof(struct qeth_vlan_vid
), GFP_ATOMIC
);
327 qeth_l2_send_setdelvlan(card
, vid
, IPA_CMD_SETVLAN
);
328 spin_lock_bh(&card
->vlanlock
);
329 list_add_tail(&id
->list
, &card
->vid_list
);
330 spin_unlock_bh(&card
->vlanlock
);
334 static void qeth_l2_vlan_rx_kill_vid(struct net_device
*dev
, unsigned short vid
)
336 struct qeth_vlan_vid
*id
, *tmpid
= NULL
;
337 struct qeth_card
*card
= netdev_priv(dev
);
339 QETH_DBF_TEXT_(TRACE
, 4, "kid:%d", vid
);
340 spin_lock_bh(&card
->vlanlock
);
341 list_for_each_entry(id
, &card
->vid_list
, list
) {
342 if (id
->vid
== vid
) {
348 spin_unlock_bh(&card
->vlanlock
);
350 qeth_l2_send_setdelvlan(card
, vid
, IPA_CMD_DELVLAN
);
353 qeth_l2_set_multicast_list(card
->dev
);
356 static int qeth_l2_stop_card(struct qeth_card
*card
, int recovery_mode
)
360 QETH_DBF_TEXT(SETUP
, 2, "stopcard");
361 QETH_DBF_HEX(SETUP
, 2, &card
, sizeof(void *));
363 qeth_set_allowed_threads(card
, 0, 1);
364 if (qeth_wait_for_threads(card
, ~QETH_RECOVER_THREAD
))
366 if (card
->read
.state
== CH_STATE_UP
&&
367 card
->write
.state
== CH_STATE_UP
&&
368 (card
->state
== CARD_STATE_UP
)) {
370 card
->info
.type
!= QETH_CARD_TYPE_OSN
) {
371 qeth_l2_stop(card
->dev
);
374 dev_close(card
->dev
);
377 if (!card
->use_hard_stop
) {
378 __u8
*mac
= &card
->dev
->dev_addr
[0];
379 rc
= qeth_l2_send_delmac(card
, mac
);
380 QETH_DBF_TEXT_(SETUP
, 2, "Lerr%d", rc
);
382 card
->state
= CARD_STATE_SOFTSETUP
;
384 if (card
->state
== CARD_STATE_SOFTSETUP
) {
385 qeth_l2_process_vlans(card
, 1);
386 qeth_l2_del_all_mc(card
);
387 qeth_clear_ipacmd_list(card
);
388 card
->state
= CARD_STATE_HARDSETUP
;
390 if (card
->state
== CARD_STATE_HARDSETUP
) {
391 qeth_qdio_clear_card(card
, 0);
392 qeth_clear_qdio_buffers(card
);
393 qeth_clear_working_pool_list(card
);
394 card
->state
= CARD_STATE_DOWN
;
396 if (card
->state
== CARD_STATE_DOWN
) {
397 qeth_clear_cmd_buffers(&card
->read
);
398 qeth_clear_cmd_buffers(&card
->write
);
400 card
->use_hard_stop
= 0;
404 static void qeth_l2_process_inbound_buffer(struct qeth_card
*card
,
405 struct qeth_qdio_buffer
*buf
, int index
)
407 struct qdio_buffer_element
*element
;
409 struct qeth_hdr
*hdr
;
413 /* get first element of current buffer */
414 element
= (struct qdio_buffer_element
*)&buf
->buffer
->element
[0];
416 if (card
->options
.performance_stats
)
417 card
->perf_stats
.bufs_rec
++;
418 while ((skb
= qeth_core_get_next_skb(card
, buf
->buffer
, &element
,
420 skb
->dev
= card
->dev
;
422 if (!(card
->dev
->flags
& IFF_UP
)) {
423 dev_kfree_skb_any(skb
);
427 switch (hdr
->hdr
.l2
.id
) {
428 case QETH_HEADER_TYPE_LAYER2
:
429 skb
->pkt_type
= PACKET_HOST
;
430 skb
->protocol
= eth_type_trans(skb
, skb
->dev
);
431 if (card
->options
.checksum_type
== NO_CHECKSUMMING
)
432 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
434 skb
->ip_summed
= CHECKSUM_NONE
;
435 if (skb
->protocol
== htons(ETH_P_802_2
))
436 *((__u32
*)skb
->cb
) = ++card
->seqno
.pkt_seqno
;
440 case QETH_HEADER_TYPE_OSN
:
441 skb_push(skb
, sizeof(struct qeth_hdr
));
442 skb_copy_to_linear_data(skb
, hdr
,
443 sizeof(struct qeth_hdr
));
445 card
->osn_info
.data_cb(skb
);
448 dev_kfree_skb_any(skb
);
449 QETH_DBF_TEXT(TRACE
, 3, "inbunkno");
450 QETH_DBF_HEX(CTRL
, 3, hdr
, QETH_DBF_CTRL_LEN
);
453 card
->dev
->last_rx
= jiffies
;
454 card
->stats
.rx_packets
++;
455 card
->stats
.rx_bytes
+= len
;
459 static int qeth_l2_send_setdelmac(struct qeth_card
*card
, __u8
*mac
,
460 enum qeth_ipa_cmds ipacmd
,
461 int (*reply_cb
) (struct qeth_card
*,
465 struct qeth_ipa_cmd
*cmd
;
466 struct qeth_cmd_buffer
*iob
;
468 QETH_DBF_TEXT(TRACE
, 2, "L2sdmac");
469 iob
= qeth_get_ipacmd_buffer(card
, ipacmd
, QETH_PROT_IPV4
);
470 cmd
= (struct qeth_ipa_cmd
*)(iob
->data
+IPA_PDU_HEADER_SIZE
);
471 cmd
->data
.setdelmac
.mac_length
= OSA_ADDR_LEN
;
472 memcpy(&cmd
->data
.setdelmac
.mac
, mac
, OSA_ADDR_LEN
);
473 return qeth_send_ipa_cmd(card
, iob
, reply_cb
, NULL
);
476 static int qeth_l2_send_setmac_cb(struct qeth_card
*card
,
477 struct qeth_reply
*reply
,
480 struct qeth_ipa_cmd
*cmd
;
482 QETH_DBF_TEXT(TRACE
, 2, "L2Smaccb");
483 cmd
= (struct qeth_ipa_cmd
*) data
;
484 if (cmd
->hdr
.return_code
) {
485 QETH_DBF_TEXT_(TRACE
, 2, "L2er%x", cmd
->hdr
.return_code
);
486 card
->info
.mac_bits
&= ~QETH_LAYER2_MAC_REGISTERED
;
487 cmd
->hdr
.return_code
= -EIO
;
489 card
->info
.mac_bits
|= QETH_LAYER2_MAC_REGISTERED
;
490 memcpy(card
->dev
->dev_addr
, cmd
->data
.setdelmac
.mac
,
492 PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
493 "successfully registered on device %s\n",
494 card
->dev
->dev_addr
[0], card
->dev
->dev_addr
[1],
495 card
->dev
->dev_addr
[2], card
->dev
->dev_addr
[3],
496 card
->dev
->dev_addr
[4], card
->dev
->dev_addr
[5],
502 static int qeth_l2_send_setmac(struct qeth_card
*card
, __u8
*mac
)
504 QETH_DBF_TEXT(TRACE
, 2, "L2Setmac");
505 return qeth_l2_send_setdelmac(card
, mac
, IPA_CMD_SETVMAC
,
506 qeth_l2_send_setmac_cb
);
509 static int qeth_l2_send_delmac_cb(struct qeth_card
*card
,
510 struct qeth_reply
*reply
,
513 struct qeth_ipa_cmd
*cmd
;
515 QETH_DBF_TEXT(TRACE
, 2, "L2Dmaccb");
516 cmd
= (struct qeth_ipa_cmd
*) data
;
517 if (cmd
->hdr
.return_code
) {
518 QETH_DBF_TEXT_(TRACE
, 2, "err%d", cmd
->hdr
.return_code
);
519 cmd
->hdr
.return_code
= -EIO
;
522 card
->info
.mac_bits
&= ~QETH_LAYER2_MAC_REGISTERED
;
527 static int qeth_l2_send_delmac(struct qeth_card
*card
, __u8
*mac
)
529 QETH_DBF_TEXT(TRACE
, 2, "L2Delmac");
530 if (!(card
->info
.mac_bits
& QETH_LAYER2_MAC_REGISTERED
))
532 return qeth_l2_send_setdelmac(card
, mac
, IPA_CMD_DELVMAC
,
533 qeth_l2_send_delmac_cb
);
536 static int qeth_l2_request_initial_mac(struct qeth_card
*card
)
539 char vendor_pre
[] = {0x02, 0x00, 0x00};
541 QETH_DBF_TEXT(SETUP
, 2, "doL2init");
542 QETH_DBF_TEXT_(SETUP
, 2, "doL2%s", CARD_BUS_ID(card
));
544 rc
= qeth_query_setadapterparms(card
);
546 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
547 "device %s: x%x\n", CARD_BUS_ID(card
), rc
);
550 if (card
->info
.guestlan
) {
551 rc
= qeth_setadpparms_change_macaddr(card
);
553 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
554 "device %s: x%x\n", CARD_BUS_ID(card
), rc
);
555 QETH_DBF_TEXT_(SETUP
, 2, "1err%d", rc
);
558 QETH_DBF_HEX(SETUP
, 2, card
->dev
->dev_addr
, OSA_ADDR_LEN
);
560 random_ether_addr(card
->dev
->dev_addr
);
561 memcpy(card
->dev
->dev_addr
, vendor_pre
, 3);
566 static int qeth_l2_set_mac_address(struct net_device
*dev
, void *p
)
568 struct sockaddr
*addr
= p
;
569 struct qeth_card
*card
= netdev_priv(dev
);
572 QETH_DBF_TEXT(TRACE
, 3, "setmac");
574 if (qeth_l2_verify_dev(dev
) != QETH_REAL_CARD
) {
575 QETH_DBF_TEXT(TRACE
, 3, "setmcINV");
579 if (card
->info
.type
== QETH_CARD_TYPE_OSN
) {
580 QETH_DBF_TEXT(TRACE
, 3, "setmcOSN");
583 QETH_DBF_TEXT_(TRACE
, 3, "%s", CARD_BUS_ID(card
));
584 QETH_DBF_HEX(TRACE
, 3, addr
->sa_data
, OSA_ADDR_LEN
);
585 rc
= qeth_l2_send_delmac(card
, &card
->dev
->dev_addr
[0]);
587 rc
= qeth_l2_send_setmac(card
, addr
->sa_data
);
591 static void qeth_l2_set_multicast_list(struct net_device
*dev
)
593 struct qeth_card
*card
= netdev_priv(dev
);
594 struct dev_mc_list
*dm
;
596 if (card
->info
.type
== QETH_CARD_TYPE_OSN
)
599 QETH_DBF_TEXT(TRACE
, 3, "setmulti");
600 qeth_l2_del_all_mc(card
);
601 spin_lock_bh(&card
->mclock
);
602 for (dm
= dev
->mc_list
; dm
; dm
= dm
->next
)
603 qeth_l2_add_mc(card
, dm
->dmi_addr
);
604 spin_unlock_bh(&card
->mclock
);
605 if (!qeth_adp_supported(card
, IPA_SETADP_SET_PROMISC_MODE
))
607 qeth_setadp_promisc_mode(card
);
610 static int qeth_l2_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
613 struct qeth_hdr
*hdr
= NULL
;
615 struct qeth_card
*card
= netdev_priv(dev
);
616 struct sk_buff
*new_skb
= skb
;
617 int ipv
= qeth_get_ip_version(skb
);
618 int cast_type
= qeth_get_cast_type(card
, skb
);
619 struct qeth_qdio_out_q
*queue
= card
->qdio
.out_qs
620 [qeth_get_priority_queue(card
, skb
, ipv
, cast_type
)];
621 int tx_bytes
= skb
->len
;
622 enum qeth_large_send_types large_send
= QETH_LARGE_SEND_NO
;
623 struct qeth_eddp_context
*ctx
= NULL
;
625 if ((card
->state
!= CARD_STATE_UP
) || !card
->lan_online
) {
626 card
->stats
.tx_carrier_errors
++;
630 if ((card
->info
.type
== QETH_CARD_TYPE_OSN
) &&
631 (skb
->protocol
== htons(ETH_P_IPV6
)))
634 if (card
->options
.performance_stats
) {
635 card
->perf_stats
.outbound_cnt
++;
636 card
->perf_stats
.outbound_start_time
= qeth_get_micros();
638 netif_stop_queue(dev
);
641 large_send
= QETH_LARGE_SEND_EDDP
;
643 if (card
->info
.type
== QETH_CARD_TYPE_OSN
)
644 hdr
= (struct qeth_hdr
*)skb
->data
;
646 /* create a clone with writeable headroom */
647 new_skb
= skb_realloc_headroom(skb
, sizeof(struct qeth_hdr
));
650 hdr
= (struct qeth_hdr
*)skb_push(new_skb
,
651 sizeof(struct qeth_hdr
));
652 qeth_l2_fill_header(card
, hdr
, new_skb
, ipv
, cast_type
);
655 if (large_send
== QETH_LARGE_SEND_EDDP
) {
656 ctx
= qeth_eddp_create_context(card
, new_skb
, hdr
,
657 skb
->sk
->sk_protocol
);
659 QETH_DBF_MESSAGE(2, "could not create eddp context\n");
663 elements
= qeth_get_elements_no(card
, (void *)hdr
, new_skb
, 0);
668 if ((large_send
== QETH_LARGE_SEND_NO
) &&
669 (skb
->ip_summed
== CHECKSUM_PARTIAL
))
670 qeth_tx_csum(new_skb
);
672 if (card
->info
.type
!= QETH_CARD_TYPE_IQD
)
673 rc
= qeth_do_send_packet(card
, queue
, new_skb
, hdr
,
676 rc
= qeth_do_send_packet_fast(card
, queue
, new_skb
, hdr
,
679 card
->stats
.tx_packets
++;
680 card
->stats
.tx_bytes
+= tx_bytes
;
682 dev_kfree_skb_any(skb
);
683 if (card
->options
.performance_stats
) {
684 if (large_send
!= QETH_LARGE_SEND_NO
) {
685 card
->perf_stats
.large_send_bytes
+= tx_bytes
;
686 card
->perf_stats
.large_send_cnt
++;
688 if (skb_shinfo(new_skb
)->nr_frags
> 0) {
689 card
->perf_stats
.sg_skbs_sent
++;
690 /* nr_frags + skb->data */
691 card
->perf_stats
.sg_frags_sent
+=
692 skb_shinfo(new_skb
)->nr_frags
+ 1;
697 qeth_eddp_put_context(ctx
);
698 dev_kfree_skb_any(new_skb
);
702 qeth_eddp_put_context(ctx
);
706 dev_kfree_skb_any(new_skb
);
707 return NETDEV_TX_BUSY
;
712 netif_wake_queue(dev
);
713 if (card
->options
.performance_stats
)
714 card
->perf_stats
.outbound_time
+= qeth_get_micros() -
715 card
->perf_stats
.outbound_start_time
;
719 card
->stats
.tx_dropped
++;
720 card
->stats
.tx_errors
++;
721 if ((new_skb
!= skb
) && new_skb
)
722 dev_kfree_skb_any(new_skb
);
723 dev_kfree_skb_any(skb
);
724 netif_wake_queue(dev
);
728 static void qeth_l2_qdio_input_handler(struct ccw_device
*ccwdev
,
729 unsigned int qdio_err
, unsigned int queue
,
730 int first_element
, int count
, unsigned long card_ptr
)
732 struct net_device
*net_dev
;
733 struct qeth_card
*card
;
734 struct qeth_qdio_buffer
*buffer
;
738 card
= (struct qeth_card
*) card_ptr
;
740 if (card
->options
.performance_stats
) {
741 card
->perf_stats
.inbound_cnt
++;
742 card
->perf_stats
.inbound_start_time
= qeth_get_micros();
744 if (qdio_err
& QDIO_ERROR_ACTIVATE_CHECK_CONDITION
) {
745 QETH_DBF_TEXT(TRACE
, 1, "qdinchk");
746 QETH_DBF_TEXT_(TRACE
, 1, "%s", CARD_BUS_ID(card
));
747 QETH_DBF_TEXT_(TRACE
, 1, "%04X%04X", first_element
,
749 QETH_DBF_TEXT_(TRACE
, 1, "%04X", queue
);
750 qeth_schedule_recovery(card
);
753 for (i
= first_element
; i
< (first_element
+ count
); ++i
) {
754 index
= i
% QDIO_MAX_BUFFERS_PER_Q
;
755 buffer
= &card
->qdio
.in_q
->bufs
[index
];
757 qeth_check_qdio_errors(buffer
->buffer
, qdio_err
, "qinerr")))
758 qeth_l2_process_inbound_buffer(card
, buffer
, index
);
759 /* clear buffer and give back to hardware */
760 qeth_put_buffer_pool_entry(card
, buffer
->pool_entry
);
761 qeth_queue_input_buffer(card
, index
);
763 if (card
->options
.performance_stats
)
764 card
->perf_stats
.inbound_time
+= qeth_get_micros() -
765 card
->perf_stats
.inbound_start_time
;
768 static int qeth_l2_open(struct net_device
*dev
)
770 struct qeth_card
*card
= netdev_priv(dev
);
772 QETH_DBF_TEXT(TRACE
, 4, "qethopen");
773 if (card
->state
!= CARD_STATE_SOFTSETUP
)
776 if ((card
->info
.type
!= QETH_CARD_TYPE_OSN
) &&
777 (!(card
->info
.mac_bits
& QETH_LAYER2_MAC_REGISTERED
))) {
778 QETH_DBF_TEXT(TRACE
, 4, "nomacadr");
781 card
->data
.state
= CH_STATE_UP
;
782 card
->state
= CARD_STATE_UP
;
783 card
->dev
->flags
|= IFF_UP
;
784 netif_start_queue(dev
);
786 if (!card
->lan_online
&& netif_carrier_ok(dev
))
787 netif_carrier_off(dev
);
792 static int qeth_l2_stop(struct net_device
*dev
)
794 struct qeth_card
*card
= netdev_priv(dev
);
796 QETH_DBF_TEXT(TRACE
, 4, "qethstop");
797 netif_tx_disable(dev
);
798 card
->dev
->flags
&= ~IFF_UP
;
799 if (card
->state
== CARD_STATE_UP
)
800 card
->state
= CARD_STATE_SOFTSETUP
;
804 static int qeth_l2_probe_device(struct ccwgroup_device
*gdev
)
806 struct qeth_card
*card
= dev_get_drvdata(&gdev
->dev
);
808 INIT_LIST_HEAD(&card
->vid_list
);
809 INIT_LIST_HEAD(&card
->mc_list
);
810 card
->options
.layer2
= 1;
811 card
->discipline
.input_handler
= (qdio_handler_t
*)
812 qeth_l2_qdio_input_handler
;
813 card
->discipline
.output_handler
= (qdio_handler_t
*)
814 qeth_qdio_output_handler
;
815 card
->discipline
.recover
= qeth_l2_recover
;
819 static void qeth_l2_remove_device(struct ccwgroup_device
*cgdev
)
821 struct qeth_card
*card
= dev_get_drvdata(&cgdev
->dev
);
823 wait_event(card
->wait_q
, qeth_threads_running(card
, 0xffffffff) == 0);
825 if (cgdev
->state
== CCWGROUP_ONLINE
) {
826 card
->use_hard_stop
= 1;
827 qeth_l2_set_offline(cgdev
);
831 unregister_netdev(card
->dev
);
835 qeth_l2_del_all_mc(card
);
839 static int qeth_l2_ethtool_set_tso(struct net_device
*dev
, u32 data
)
841 struct qeth_card
*card
= netdev_priv(dev
);
844 if (card
->options
.large_send
== QETH_LARGE_SEND_NO
) {
845 card
->options
.large_send
= QETH_LARGE_SEND_EDDP
;
846 dev
->features
|= NETIF_F_TSO
;
849 dev
->features
&= ~NETIF_F_TSO
;
850 card
->options
.large_send
= QETH_LARGE_SEND_NO
;
855 static struct ethtool_ops qeth_l2_ethtool_ops
= {
856 .get_link
= ethtool_op_get_link
,
857 .get_tx_csum
= ethtool_op_get_tx_csum
,
858 .set_tx_csum
= ethtool_op_set_tx_hw_csum
,
859 .get_sg
= ethtool_op_get_sg
,
860 .set_sg
= ethtool_op_set_sg
,
861 .get_tso
= ethtool_op_get_tso
,
862 .set_tso
= qeth_l2_ethtool_set_tso
,
863 .get_strings
= qeth_core_get_strings
,
864 .get_ethtool_stats
= qeth_core_get_ethtool_stats
,
865 .get_stats_count
= qeth_core_get_stats_count
,
866 .get_drvinfo
= qeth_core_get_drvinfo
,
867 .get_settings
= qeth_core_ethtool_get_settings
,
870 static struct ethtool_ops qeth_l2_osn_ops
= {
871 .get_strings
= qeth_core_get_strings
,
872 .get_ethtool_stats
= qeth_core_get_ethtool_stats
,
873 .get_stats_count
= qeth_core_get_stats_count
,
874 .get_drvinfo
= qeth_core_get_drvinfo
,
877 static int qeth_l2_setup_netdev(struct qeth_card
*card
)
879 switch (card
->info
.type
) {
880 case QETH_CARD_TYPE_OSAE
:
881 card
->dev
= alloc_etherdev(0);
883 case QETH_CARD_TYPE_IQD
:
884 card
->dev
= alloc_netdev(0, "hsi%d", ether_setup
);
886 case QETH_CARD_TYPE_OSN
:
887 card
->dev
= alloc_netdev(0, "osn%d", ether_setup
);
888 card
->dev
->flags
|= IFF_NOARP
;
891 card
->dev
= alloc_etherdev(0);
897 card
->dev
->priv
= card
;
898 card
->dev
->tx_timeout
= &qeth_tx_timeout
;
899 card
->dev
->watchdog_timeo
= QETH_TX_TIMEOUT
;
900 card
->dev
->open
= qeth_l2_open
;
901 card
->dev
->stop
= qeth_l2_stop
;
902 card
->dev
->hard_start_xmit
= qeth_l2_hard_start_xmit
;
903 card
->dev
->do_ioctl
= qeth_l2_do_ioctl
;
904 card
->dev
->get_stats
= qeth_get_stats
;
905 card
->dev
->change_mtu
= qeth_change_mtu
;
906 card
->dev
->set_multicast_list
= qeth_l2_set_multicast_list
;
907 card
->dev
->vlan_rx_kill_vid
= qeth_l2_vlan_rx_kill_vid
;
908 card
->dev
->vlan_rx_add_vid
= qeth_l2_vlan_rx_add_vid
;
909 card
->dev
->set_mac_address
= qeth_l2_set_mac_address
;
910 card
->dev
->mtu
= card
->info
.initial_mtu
;
911 if (card
->info
.type
!= QETH_CARD_TYPE_OSN
)
912 SET_ETHTOOL_OPS(card
->dev
, &qeth_l2_ethtool_ops
);
914 SET_ETHTOOL_OPS(card
->dev
, &qeth_l2_osn_ops
);
915 card
->dev
->features
|= NETIF_F_HW_VLAN_FILTER
;
916 card
->info
.broadcast_capable
= 1;
917 qeth_l2_request_initial_mac(card
);
918 SET_NETDEV_DEV(card
->dev
, &card
->gdev
->dev
);
919 return register_netdev(card
->dev
);
922 static int __qeth_l2_set_online(struct ccwgroup_device
*gdev
, int recovery_mode
)
924 struct qeth_card
*card
= dev_get_drvdata(&gdev
->dev
);
926 enum qeth_card_states recover_flag
;
929 QETH_DBF_TEXT(SETUP
, 2, "setonlin");
930 QETH_DBF_HEX(SETUP
, 2, &card
, sizeof(void *));
932 qeth_set_allowed_threads(card
, QETH_RECOVER_THREAD
, 1);
933 if (qeth_wait_for_threads(card
, ~QETH_RECOVER_THREAD
)) {
934 PRINT_WARN("set_online of card %s interrupted by user!\n",
939 recover_flag
= card
->state
;
940 rc
= ccw_device_set_online(CARD_RDEV(card
));
942 QETH_DBF_TEXT_(SETUP
, 2, "1err%d", rc
);
945 rc
= ccw_device_set_online(CARD_WDEV(card
));
947 QETH_DBF_TEXT_(SETUP
, 2, "1err%d", rc
);
950 rc
= ccw_device_set_online(CARD_DDEV(card
));
952 QETH_DBF_TEXT_(SETUP
, 2, "1err%d", rc
);
956 rc
= qeth_core_hardsetup_card(card
);
958 QETH_DBF_TEXT_(SETUP
, 2, "2err%d", rc
);
962 if (!card
->dev
&& qeth_l2_setup_netdev(card
))
965 if (card
->info
.type
!= QETH_CARD_TYPE_OSN
)
966 qeth_l2_send_setmac(card
, &card
->dev
->dev_addr
[0]);
968 card
->state
= CARD_STATE_HARDSETUP
;
969 qeth_print_status_message(card
);
972 QETH_DBF_TEXT(SETUP
, 2, "softsetp");
974 rc
= qeth_send_startlan(card
);
976 QETH_DBF_TEXT_(SETUP
, 2, "1err%d", rc
);
978 PRINT_WARN("LAN on card %s if offline! "
979 "Waiting for STARTLAN from card.\n",
981 card
->lan_online
= 0;
985 card
->lan_online
= 1;
987 if (card
->info
.type
!= QETH_CARD_TYPE_OSN
) {
988 qeth_set_large_send(card
, card
->options
.large_send
);
989 qeth_l2_process_vlans(card
, 0);
992 netif_tx_disable(card
->dev
);
994 rc
= qeth_init_qdio_queues(card
);
996 QETH_DBF_TEXT_(SETUP
, 2, "6err%d", rc
);
999 card
->state
= CARD_STATE_SOFTSETUP
;
1000 netif_carrier_on(card
->dev
);
1002 qeth_set_allowed_threads(card
, 0xffffffff, 0);
1003 if (recover_flag
== CARD_STATE_RECOVER
) {
1004 if (recovery_mode
&&
1005 card
->info
.type
!= QETH_CARD_TYPE_OSN
) {
1006 qeth_l2_open(card
->dev
);
1009 dev_open(card
->dev
);
1012 /* this also sets saved unicast addresses */
1013 qeth_l2_set_multicast_list(card
->dev
);
1015 /* let user_space know that device is online */
1016 kobject_uevent(&gdev
->dev
.kobj
, KOBJ_CHANGE
);
1019 card
->use_hard_stop
= 1;
1020 qeth_l2_stop_card(card
, 0);
1021 ccw_device_set_offline(CARD_DDEV(card
));
1022 ccw_device_set_offline(CARD_WDEV(card
));
1023 ccw_device_set_offline(CARD_RDEV(card
));
1024 if (recover_flag
== CARD_STATE_RECOVER
)
1025 card
->state
= CARD_STATE_RECOVER
;
1027 card
->state
= CARD_STATE_DOWN
;
1031 static int qeth_l2_set_online(struct ccwgroup_device
*gdev
)
1033 return __qeth_l2_set_online(gdev
, 0);
1036 static int __qeth_l2_set_offline(struct ccwgroup_device
*cgdev
,
1039 struct qeth_card
*card
= dev_get_drvdata(&cgdev
->dev
);
1040 int rc
= 0, rc2
= 0, rc3
= 0;
1041 enum qeth_card_states recover_flag
;
1043 QETH_DBF_TEXT(SETUP
, 3, "setoffl");
1044 QETH_DBF_HEX(SETUP
, 3, &card
, sizeof(void *));
1046 if (card
->dev
&& netif_carrier_ok(card
->dev
))
1047 netif_carrier_off(card
->dev
);
1048 recover_flag
= card
->state
;
1049 if (qeth_l2_stop_card(card
, recovery_mode
) == -ERESTARTSYS
) {
1050 PRINT_WARN("Stopping card %s interrupted by user!\n",
1052 return -ERESTARTSYS
;
1054 rc
= ccw_device_set_offline(CARD_DDEV(card
));
1055 rc2
= ccw_device_set_offline(CARD_WDEV(card
));
1056 rc3
= ccw_device_set_offline(CARD_RDEV(card
));
1058 rc
= (rc2
) ? rc2
: rc3
;
1060 QETH_DBF_TEXT_(SETUP
, 2, "1err%d", rc
);
1061 if (recover_flag
== CARD_STATE_UP
)
1062 card
->state
= CARD_STATE_RECOVER
;
1063 /* let user_space know that device is offline */
1064 kobject_uevent(&cgdev
->dev
.kobj
, KOBJ_CHANGE
);
1068 static int qeth_l2_set_offline(struct ccwgroup_device
*cgdev
)
1070 return __qeth_l2_set_offline(cgdev
, 0);
1073 static int qeth_l2_recover(void *ptr
)
1075 struct qeth_card
*card
;
1078 card
= (struct qeth_card
*) ptr
;
1079 QETH_DBF_TEXT(TRACE
, 2, "recover1");
1080 QETH_DBF_HEX(TRACE
, 2, &card
, sizeof(void *));
1081 if (!qeth_do_run_thread(card
, QETH_RECOVER_THREAD
))
1083 QETH_DBF_TEXT(TRACE
, 2, "recover2");
1084 PRINT_WARN("Recovery of device %s started ...\n",
1086 card
->use_hard_stop
= 1;
1087 __qeth_l2_set_offline(card
->gdev
, 1);
1088 rc
= __qeth_l2_set_online(card
->gdev
, 1);
1089 /* don't run another scheduled recovery */
1090 qeth_clear_thread_start_bit(card
, QETH_RECOVER_THREAD
);
1091 qeth_clear_thread_running_bit(card
, QETH_RECOVER_THREAD
);
1093 PRINT_INFO("Device %s successfully recovered!\n",
1096 PRINT_INFO("Device %s could not be recovered!\n",
1101 static int __init
qeth_l2_init(void)
1103 PRINT_INFO("register layer 2 discipline\n");
1107 static void __exit
qeth_l2_exit(void)
1109 PRINT_INFO("unregister layer 2 discipline\n");
1112 static void qeth_l2_shutdown(struct ccwgroup_device
*gdev
)
1114 struct qeth_card
*card
= dev_get_drvdata(&gdev
->dev
);
1115 qeth_qdio_clear_card(card
, 0);
1116 qeth_clear_qdio_buffers(card
);
1119 struct ccwgroup_driver qeth_l2_ccwgroup_driver
= {
1120 .probe
= qeth_l2_probe_device
,
1121 .remove
= qeth_l2_remove_device
,
1122 .set_online
= qeth_l2_set_online
,
1123 .set_offline
= qeth_l2_set_offline
,
1124 .shutdown
= qeth_l2_shutdown
,
1126 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver
);
1128 static int qeth_osn_send_control_data(struct qeth_card
*card
, int len
,
1129 struct qeth_cmd_buffer
*iob
)
1131 unsigned long flags
;
1134 QETH_DBF_TEXT(TRACE
, 5, "osndctrd");
1136 wait_event(card
->wait_q
,
1137 atomic_cmpxchg(&card
->write
.irq_pending
, 0, 1) == 0);
1138 qeth_prepare_control_data(card
, len
, iob
);
1139 QETH_DBF_TEXT(TRACE
, 6, "osnoirqp");
1140 spin_lock_irqsave(get_ccwdev_lock(card
->write
.ccwdev
), flags
);
1141 rc
= ccw_device_start(card
->write
.ccwdev
, &card
->write
.ccw
,
1142 (addr_t
) iob
, 0, 0);
1143 spin_unlock_irqrestore(get_ccwdev_lock(card
->write
.ccwdev
), flags
);
1145 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1146 "ccw_device_start rc = %i\n", rc
);
1147 QETH_DBF_TEXT_(TRACE
, 2, " err%d", rc
);
1148 qeth_release_buffer(iob
->channel
, iob
);
1149 atomic_set(&card
->write
.irq_pending
, 0);
1150 wake_up(&card
->wait_q
);
1155 static int qeth_osn_send_ipa_cmd(struct qeth_card
*card
,
1156 struct qeth_cmd_buffer
*iob
, int data_len
)
1160 QETH_DBF_TEXT(TRACE
, 4, "osndipa");
1162 qeth_prepare_ipa_cmd(card
, iob
, QETH_PROT_OSN2
);
1163 s1
= (u16
)(IPA_PDU_HEADER_SIZE
+ data_len
);
1165 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob
->data
), &s1
, 2);
1166 memcpy(QETH_IPA_PDU_LEN_PDU1(iob
->data
), &s2
, 2);
1167 memcpy(QETH_IPA_PDU_LEN_PDU2(iob
->data
), &s2
, 2);
1168 memcpy(QETH_IPA_PDU_LEN_PDU3(iob
->data
), &s2
, 2);
1169 return qeth_osn_send_control_data(card
, s1
, iob
);
1172 int qeth_osn_assist(struct net_device
*dev
, void *data
, int data_len
)
1174 struct qeth_cmd_buffer
*iob
;
1175 struct qeth_card
*card
;
1178 QETH_DBF_TEXT(TRACE
, 2, "osnsdmc");
1181 card
= netdev_priv(dev
);
1184 if ((card
->state
!= CARD_STATE_UP
) &&
1185 (card
->state
!= CARD_STATE_SOFTSETUP
))
1187 iob
= qeth_wait_for_buffer(&card
->write
);
1188 memcpy(iob
->data
+IPA_PDU_HEADER_SIZE
, data
, data_len
);
1189 rc
= qeth_osn_send_ipa_cmd(card
, iob
, data_len
);
1192 EXPORT_SYMBOL(qeth_osn_assist
);
1194 int qeth_osn_register(unsigned char *read_dev_no
, struct net_device
**dev
,
1195 int (*assist_cb
)(struct net_device
*, void *),
1196 int (*data_cb
)(struct sk_buff
*))
1198 struct qeth_card
*card
;
1200 QETH_DBF_TEXT(TRACE
, 2, "osnreg");
1201 *dev
= qeth_l2_netdev_by_devno(read_dev_no
);
1204 card
= netdev_priv(*dev
);
1207 if ((assist_cb
== NULL
) || (data_cb
== NULL
))
1209 card
->osn_info
.assist_cb
= assist_cb
;
1210 card
->osn_info
.data_cb
= data_cb
;
1213 EXPORT_SYMBOL(qeth_osn_register
);
1215 void qeth_osn_deregister(struct net_device
*dev
)
1217 struct qeth_card
*card
;
1219 QETH_DBF_TEXT(TRACE
, 2, "osndereg");
1222 card
= netdev_priv(dev
);
1225 card
->osn_info
.assist_cb
= NULL
;
1226 card
->osn_info
.data_cb
= NULL
;
1229 EXPORT_SYMBOL(qeth_osn_deregister
);
1231 module_init(qeth_l2_init
);
1232 module_exit(qeth_l2_exit
);
1233 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1234 MODULE_DESCRIPTION("qeth layer 2 discipline");
1235 MODULE_LICENSE("GPL");