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Frank Blaschka4a71df52008-02-15 09:19:42 +01001/*
2 * drivers/s390/net/qeth_l2_main.c
3 *
Frank Blaschkabbcfcdc2009-06-16 10:30:31 +02004 * Copyright IBM Corp. 2007, 2009
Frank Blaschka4a71df52008-02-15 09:19:42 +01005 * 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>
9 */
10
Frank Blaschka74eacdb2008-12-25 13:39:49 +010011#define KMSG_COMPONENT "qeth"
12#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
Frank Blaschka4a71df52008-02-15 09:19:42 +010014#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/string.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090019#include <linux/slab.h>
Frank Blaschka4a71df52008-02-15 09:19:42 +010020#include <linux/etherdevice.h>
21#include <linux/mii.h>
22#include <linux/ip.h>
Jiri Pirkoccffad252009-05-22 23:22:17 +000023#include <linux/list.h>
Frank Blaschka4a71df52008-02-15 09:19:42 +010024
Frank Blaschka4a71df52008-02-15 09:19:42 +010025#include "qeth_core.h"
Frank Blaschka4a71df52008-02-15 09:19:42 +010026
Frank Blaschka4a71df52008-02-15 09:19:42 +010027static int qeth_l2_set_offline(struct ccwgroup_device *);
28static int qeth_l2_stop(struct net_device *);
29static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
30static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
31 enum qeth_ipa_cmds,
32 int (*reply_cb) (struct qeth_card *,
33 struct qeth_reply*,
34 unsigned long));
35static void qeth_l2_set_multicast_list(struct net_device *);
36static int qeth_l2_recover(void *);
37
38static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
39{
Heiko Carstens509e2562008-07-26 02:24:10 -070040 struct qeth_card *card = dev->ml_priv;
Frank Blaschka4a71df52008-02-15 09:19:42 +010041 struct mii_ioctl_data *mii_data;
42 int rc = 0;
43
44 if (!card)
45 return -ENODEV;
46
47 if ((card->state != CARD_STATE_UP) &&
48 (card->state != CARD_STATE_SOFTSETUP))
49 return -ENODEV;
50
51 if (card->info.type == QETH_CARD_TYPE_OSN)
52 return -EPERM;
53
54 switch (cmd) {
55 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
56 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
57 break;
58 case SIOC_QETH_GET_CARD_TYPE:
Ursula Braun5113fec2010-05-16 21:15:14 +000059 if ((card->info.type == QETH_CARD_TYPE_OSD ||
60 card->info.type == QETH_CARD_TYPE_OSM ||
61 card->info.type == QETH_CARD_TYPE_OSX) &&
Frank Blaschka4a71df52008-02-15 09:19:42 +010062 !card->info.guestlan)
63 return 1;
64 return 0;
65 break;
66 case SIOCGMIIPHY:
67 mii_data = if_mii(rq);
68 mii_data->phy_id = 0;
69 break;
70 case SIOCGMIIREG:
71 mii_data = if_mii(rq);
72 if (mii_data->phy_id != 0)
73 rc = -EINVAL;
74 else
75 mii_data->val_out = qeth_mdio_read(dev,
76 mii_data->phy_id, mii_data->reg_num);
77 break;
78 default:
79 rc = -EOPNOTSUPP;
80 }
81 if (rc)
Carsten Otte847a50f2010-06-21 22:57:05 +000082 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
Frank Blaschka4a71df52008-02-15 09:19:42 +010083 return rc;
84}
85
86static int qeth_l2_verify_dev(struct net_device *dev)
87{
88 struct qeth_card *card;
89 unsigned long flags;
90 int rc = 0;
91
92 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
93 list_for_each_entry(card, &qeth_core_card_list.list, list) {
94 if (card->dev == dev) {
95 rc = QETH_REAL_CARD;
96 break;
97 }
98 }
99 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
100
101 return rc;
102}
103
104static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
105{
106 struct qeth_card *card;
107 struct net_device *ndev;
Cornelia Huckf06f6f32008-06-06 12:37:45 +0200108 __u16 temp_dev_no;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100109 unsigned long flags;
Cornelia Huckf06f6f32008-06-06 12:37:45 +0200110 struct ccw_dev_id read_devid;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100111
112 ndev = NULL;
113 memcpy(&temp_dev_no, read_dev_no, 2);
114 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
115 list_for_each_entry(card, &qeth_core_card_list.list, list) {
Cornelia Huckf06f6f32008-06-06 12:37:45 +0200116 ccw_device_get_id(CARD_RDEV(card), &read_devid);
117 if (read_devid.devno == temp_dev_no) {
Frank Blaschka4a71df52008-02-15 09:19:42 +0100118 ndev = card->dev;
119 break;
120 }
121 }
122 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
123 return ndev;
124}
125
126static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
127 struct qeth_reply *reply,
128 unsigned long data)
129{
130 struct qeth_ipa_cmd *cmd;
131 __u8 *mac;
132
Carsten Otte847a50f2010-06-21 22:57:05 +0000133 QETH_CARD_TEXT(card, 2, "L2Sgmacb");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100134 cmd = (struct qeth_ipa_cmd *) data;
135 mac = &cmd->data.setdelmac.mac[0];
136 /* MAC already registered, needed in couple/uncouple case */
Ursula Braun0666eb062009-05-19 21:38:39 +0000137 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
Johannes Berg7c510e42008-10-27 17:47:26 -0700138 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
139 mac, QETH_CARD_IFNAME(card));
Frank Blaschka4a71df52008-02-15 09:19:42 +0100140 cmd->hdr.return_code = 0;
141 }
142 if (cmd->hdr.return_code)
Johannes Berg7c510e42008-10-27 17:47:26 -0700143 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
144 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100145 return 0;
146}
147
148static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
149{
Carsten Otte847a50f2010-06-21 22:57:05 +0000150 QETH_CARD_TEXT(card, 2, "L2Sgmac");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100151 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
152 qeth_l2_send_setgroupmac_cb);
153}
154
155static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
156 struct qeth_reply *reply,
157 unsigned long data)
158{
159 struct qeth_ipa_cmd *cmd;
160 __u8 *mac;
161
Carsten Otte847a50f2010-06-21 22:57:05 +0000162 QETH_CARD_TEXT(card, 2, "L2Dgmacb");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100163 cmd = (struct qeth_ipa_cmd *) data;
164 mac = &cmd->data.setdelmac.mac[0];
165 if (cmd->hdr.return_code)
Johannes Berg7c510e42008-10-27 17:47:26 -0700166 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
167 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100168 return 0;
169}
170
171static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
172{
Carsten Otte847a50f2010-06-21 22:57:05 +0000173 QETH_CARD_TEXT(card, 2, "L2Dgmac");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100174 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
175 qeth_l2_send_delgroupmac_cb);
176}
177
Frank Blaschka7db22662008-08-15 08:02:59 +0200178static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
Frank Blaschka4a71df52008-02-15 09:19:42 +0100179{
180 struct qeth_mc_mac *mc;
Frank Blaschka7db22662008-08-15 08:02:59 +0200181 int rc;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100182
183 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
184
Frank Blaschka14cc21b2008-06-06 12:37:46 +0200185 if (!mc)
Frank Blaschka4a71df52008-02-15 09:19:42 +0100186 return;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100187
188 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
189 mc->mc_addrlen = OSA_ADDR_LEN;
Frank Blaschka7db22662008-08-15 08:02:59 +0200190 mc->is_vmac = vmac;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100191
Frank Blaschka7db22662008-08-15 08:02:59 +0200192 if (vmac) {
193 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
194 NULL);
195 } else {
196 rc = qeth_l2_send_setgroupmac(card, mac);
197 }
198
199 if (!rc)
Frank Blaschka4a71df52008-02-15 09:19:42 +0100200 list_add_tail(&mc->list, &card->mc_list);
201 else
202 kfree(mc);
203}
204
205static void qeth_l2_del_all_mc(struct qeth_card *card)
206{
207 struct qeth_mc_mac *mc, *tmp;
208
209 spin_lock_bh(&card->mclock);
210 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
Frank Blaschka7db22662008-08-15 08:02:59 +0200211 if (mc->is_vmac)
212 qeth_l2_send_setdelmac(card, mc->mc_addr,
213 IPA_CMD_DELVMAC, NULL);
214 else
215 qeth_l2_send_delgroupmac(card, mc->mc_addr);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100216 list_del(&mc->list);
217 kfree(mc);
218 }
219 spin_unlock_bh(&card->mclock);
220}
221
Klaus-Dieter Wackerce73e102009-08-26 02:01:08 +0000222static inline int qeth_l2_get_cast_type(struct qeth_card *card,
223 struct sk_buff *skb)
Frank Blaschka4a71df52008-02-15 09:19:42 +0100224{
Klaus-Dieter Wackerce73e102009-08-26 02:01:08 +0000225 if (card->info.type == QETH_CARD_TYPE_OSN)
226 return RTN_UNSPEC;
227 if (is_broadcast_ether_addr(skb->data))
228 return RTN_BROADCAST;
229 if (is_multicast_ether_addr(skb->data))
230 return RTN_MULTICAST;
231 return RTN_UNSPEC;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100232}
233
234static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
235 struct sk_buff *skb, int ipv, int cast_type)
236{
Frank Blaschka683d7182008-08-01 16:39:13 +0200237 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100238
239 memset(hdr, 0, sizeof(struct qeth_hdr));
240 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
241
242 /* set byte byte 3 to casting flags */
243 if (cast_type == RTN_MULTICAST)
244 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
245 else if (cast_type == RTN_BROADCAST)
246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
247 else
Klaus-Dieter Wackerce73e102009-08-26 02:01:08 +0000248 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100249
250 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
251 /* VSWITCH relies on the VLAN
252 * information to be present in
253 * the QDIO header */
254 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
255 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
256 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
257 }
258}
259
260static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
261 struct qeth_reply *reply, unsigned long data)
262{
263 struct qeth_ipa_cmd *cmd;
264
Carsten Otte847a50f2010-06-21 22:57:05 +0000265 QETH_CARD_TEXT(card, 2, "L2sdvcb");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100266 cmd = (struct qeth_ipa_cmd *) data;
267 if (cmd->hdr.return_code) {
Frank Blaschka14cc21b2008-06-06 12:37:46 +0200268 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
Frank Blaschka4a71df52008-02-15 09:19:42 +0100269 "Continuing\n", cmd->data.setdelvlan.vlan_id,
270 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
Carsten Otte847a50f2010-06-21 22:57:05 +0000271 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
272 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100273 }
274 return 0;
275}
276
277static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
278 enum qeth_ipa_cmds ipacmd)
279{
280 struct qeth_ipa_cmd *cmd;
281 struct qeth_cmd_buffer *iob;
282
Carsten Otte847a50f2010-06-21 22:57:05 +0000283 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100284 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
285 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
286 cmd->data.setdelvlan.vlan_id = i;
287 return qeth_send_ipa_cmd(card, iob,
288 qeth_l2_send_setdelvlan_cb, NULL);
289}
290
291static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
292{
293 struct qeth_vlan_vid *id;
Carsten Otte847a50f2010-06-21 22:57:05 +0000294 QETH_CARD_TEXT(card, 3, "L2prcvln");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100295 spin_lock_bh(&card->vlanlock);
296 list_for_each_entry(id, &card->vid_list, list) {
297 if (clear)
298 qeth_l2_send_setdelvlan(card, id->vid,
299 IPA_CMD_DELVLAN);
300 else
301 qeth_l2_send_setdelvlan(card, id->vid,
302 IPA_CMD_SETVLAN);
303 }
304 spin_unlock_bh(&card->vlanlock);
305}
306
307static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
308{
Heiko Carstens509e2562008-07-26 02:24:10 -0700309 struct qeth_card *card = dev->ml_priv;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100310 struct qeth_vlan_vid *id;
311
Carsten Otte847a50f2010-06-21 22:57:05 +0000312 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
Ursula Braun10651db2010-10-01 02:51:13 +0000313 if (!vid)
314 return;
Ursula Braun5113fec2010-05-16 21:15:14 +0000315 if (card->info.type == QETH_CARD_TYPE_OSM) {
Carsten Otte847a50f2010-06-21 22:57:05 +0000316 QETH_CARD_TEXT(card, 3, "aidOSM");
Ursula Braun5113fec2010-05-16 21:15:14 +0000317 return;
318 }
Ursula Braun8e98ac42009-03-24 20:57:18 +0000319 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
Carsten Otte847a50f2010-06-21 22:57:05 +0000320 QETH_CARD_TEXT(card, 3, "aidREC");
Ursula Braun8e98ac42009-03-24 20:57:18 +0000321 return;
322 }
Frank Blaschka4a71df52008-02-15 09:19:42 +0100323 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
324 if (id) {
325 id->vid = vid;
326 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
327 spin_lock_bh(&card->vlanlock);
328 list_add_tail(&id->list, &card->vid_list);
329 spin_unlock_bh(&card->vlanlock);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100330 }
331}
332
333static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
334{
335 struct qeth_vlan_vid *id, *tmpid = NULL;
Heiko Carstens509e2562008-07-26 02:24:10 -0700336 struct qeth_card *card = dev->ml_priv;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100337
Carsten Otte847a50f2010-06-21 22:57:05 +0000338 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
Ursula Braun5113fec2010-05-16 21:15:14 +0000339 if (card->info.type == QETH_CARD_TYPE_OSM) {
Carsten Otte847a50f2010-06-21 22:57:05 +0000340 QETH_CARD_TEXT(card, 3, "kidOSM");
Ursula Braun5113fec2010-05-16 21:15:14 +0000341 return;
342 }
Ursula Braun8e98ac42009-03-24 20:57:18 +0000343 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
Carsten Otte847a50f2010-06-21 22:57:05 +0000344 QETH_CARD_TEXT(card, 3, "kidREC");
Ursula Braun8e98ac42009-03-24 20:57:18 +0000345 return;
346 }
Frank Blaschka4a71df52008-02-15 09:19:42 +0100347 spin_lock_bh(&card->vlanlock);
348 list_for_each_entry(id, &card->vid_list, list) {
349 if (id->vid == vid) {
350 list_del(&id->list);
351 tmpid = id;
352 break;
353 }
354 }
355 spin_unlock_bh(&card->vlanlock);
356 if (tmpid) {
357 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
358 kfree(tmpid);
359 }
360 qeth_l2_set_multicast_list(card->dev);
361}
362
363static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
364{
365 int rc = 0;
366
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +0200367 QETH_DBF_TEXT(SETUP , 2, "stopcard");
368 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
Frank Blaschka4a71df52008-02-15 09:19:42 +0100369
370 qeth_set_allowed_threads(card, 0, 1);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100371 if (card->read.state == CH_STATE_UP &&
372 card->write.state == CH_STATE_UP &&
373 (card->state == CARD_STATE_UP)) {
374 if (recovery_mode &&
375 card->info.type != QETH_CARD_TYPE_OSN) {
376 qeth_l2_stop(card->dev);
377 } else {
378 rtnl_lock();
379 dev_close(card->dev);
380 rtnl_unlock();
381 }
Klaus-Dieter Wacker932e15832009-03-24 20:57:17 +0000382 if (!card->use_hard_stop ||
383 recovery_mode) {
Frank Blaschka4a71df52008-02-15 09:19:42 +0100384 __u8 *mac = &card->dev->dev_addr[0];
385 rc = qeth_l2_send_delmac(card, mac);
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +0200386 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100387 }
388 card->state = CARD_STATE_SOFTSETUP;
389 }
390 if (card->state == CARD_STATE_SOFTSETUP) {
391 qeth_l2_process_vlans(card, 1);
Klaus-Dieter Wacker932e15832009-03-24 20:57:17 +0000392 if (!card->use_hard_stop ||
393 recovery_mode)
Ursula Braun28a7e4c2008-09-19 12:56:03 +0200394 qeth_l2_del_all_mc(card);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100395 qeth_clear_ipacmd_list(card);
396 card->state = CARD_STATE_HARDSETUP;
397 }
398 if (card->state == CARD_STATE_HARDSETUP) {
399 qeth_qdio_clear_card(card, 0);
400 qeth_clear_qdio_buffers(card);
401 qeth_clear_working_pool_list(card);
402 card->state = CARD_STATE_DOWN;
403 }
404 if (card->state == CARD_STATE_DOWN) {
405 qeth_clear_cmd_buffers(&card->read);
406 qeth_clear_cmd_buffers(&card->write);
407 }
408 card->use_hard_stop = 0;
409 return rc;
410}
411
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000412static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
413 int budget, int *done)
Frank Blaschka4a71df52008-02-15 09:19:42 +0100414{
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000415 int work_done = 0;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100416 struct sk_buff *skb;
417 struct qeth_hdr *hdr;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100418 unsigned int len;
419
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000420 *done = 0;
421 BUG_ON(!budget);
422 while (budget) {
423 skb = qeth_core_get_next_skb(card,
424 card->qdio.in_q->bufs[card->rx.b_index].buffer,
425 &card->rx.b_element, &card->rx.e_offset, &hdr);
426 if (!skb) {
427 *done = 1;
428 break;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100429 }
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000430 skb->dev = card->dev;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100431 switch (hdr->hdr.l2.id) {
432 case QETH_HEADER_TYPE_LAYER2:
433 skb->pkt_type = PACKET_HOST;
434 skb->protocol = eth_type_trans(skb, skb->dev);
435 if (card->options.checksum_type == NO_CHECKSUMMING)
436 skb->ip_summed = CHECKSUM_UNNECESSARY;
437 else
438 skb->ip_summed = CHECKSUM_NONE;
Ursula Braun12883722008-04-01 10:26:56 +0200439 if (skb->protocol == htons(ETH_P_802_2))
440 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100441 len = skb->len;
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000442 netif_receive_skb(skb);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100443 break;
444 case QETH_HEADER_TYPE_OSN:
Ursula Braun2d488c22008-10-24 11:16:55 +0200445 if (card->info.type == QETH_CARD_TYPE_OSN) {
446 skb_push(skb, sizeof(struct qeth_hdr));
447 skb_copy_to_linear_data(skb, hdr,
Frank Blaschka4a71df52008-02-15 09:19:42 +0100448 sizeof(struct qeth_hdr));
Ursula Braun2d488c22008-10-24 11:16:55 +0200449 len = skb->len;
450 card->osn_info.data_cb(skb);
451 break;
452 }
453 /* else unknown */
Frank Blaschka4a71df52008-02-15 09:19:42 +0100454 default:
455 dev_kfree_skb_any(skb);
Carsten Otte847a50f2010-06-21 22:57:05 +0000456 QETH_CARD_TEXT(card, 3, "inbunkno");
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +0200457 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100458 continue;
459 }
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000460 work_done++;
461 budget--;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100462 card->stats.rx_packets++;
463 card->stats.rx_bytes += len;
464 }
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000465 return work_done;
466}
467
468static int qeth_l2_poll(struct napi_struct *napi, int budget)
469{
470 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
471 int work_done = 0;
472 struct qeth_qdio_buffer *buffer;
473 int done;
474 int new_budget = budget;
475
476 if (card->options.performance_stats) {
477 card->perf_stats.inbound_cnt++;
478 card->perf_stats.inbound_start_time = qeth_get_micros();
479 }
480
481 while (1) {
482 if (!card->rx.b_count) {
483 card->rx.qdio_err = 0;
484 card->rx.b_count = qdio_get_next_buffers(
485 card->data.ccwdev, 0, &card->rx.b_index,
486 &card->rx.qdio_err);
487 if (card->rx.b_count <= 0) {
488 card->rx.b_count = 0;
489 break;
490 }
491 card->rx.b_element =
492 &card->qdio.in_q->bufs[card->rx.b_index]
493 .buffer->element[0];
494 card->rx.e_offset = 0;
495 }
496
497 while (card->rx.b_count) {
498 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
499 if (!(card->rx.qdio_err &&
500 qeth_check_qdio_errors(card, buffer->buffer,
501 card->rx.qdio_err, "qinerr")))
502 work_done += qeth_l2_process_inbound_buffer(
503 card, new_budget, &done);
504 else
505 done = 1;
506
507 if (done) {
508 if (card->options.performance_stats)
509 card->perf_stats.bufs_rec++;
510 qeth_put_buffer_pool_entry(card,
511 buffer->pool_entry);
512 qeth_queue_input_buffer(card, card->rx.b_index);
513 card->rx.b_count--;
514 if (card->rx.b_count) {
515 card->rx.b_index =
516 (card->rx.b_index + 1) %
517 QDIO_MAX_BUFFERS_PER_Q;
518 card->rx.b_element =
519 &card->qdio.in_q
520 ->bufs[card->rx.b_index]
521 .buffer->element[0];
522 card->rx.e_offset = 0;
523 }
524 }
525
526 if (work_done >= budget)
527 goto out;
528 else
529 new_budget = budget - work_done;
530 }
531 }
532
533 napi_complete(napi);
534 if (qdio_start_irq(card->data.ccwdev, 0))
535 napi_schedule(&card->napi);
536out:
537 if (card->options.performance_stats)
538 card->perf_stats.inbound_time += qeth_get_micros() -
539 card->perf_stats.inbound_start_time;
540 return work_done;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100541}
542
543static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
544 enum qeth_ipa_cmds ipacmd,
545 int (*reply_cb) (struct qeth_card *,
546 struct qeth_reply*,
547 unsigned long))
548{
549 struct qeth_ipa_cmd *cmd;
550 struct qeth_cmd_buffer *iob;
551
Carsten Otte847a50f2010-06-21 22:57:05 +0000552 QETH_CARD_TEXT(card, 2, "L2sdmac");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100553 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
554 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
555 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
556 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
557 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
558}
559
560static int qeth_l2_send_setmac_cb(struct qeth_card *card,
561 struct qeth_reply *reply,
562 unsigned long data)
563{
564 struct qeth_ipa_cmd *cmd;
565
Carsten Otte847a50f2010-06-21 22:57:05 +0000566 QETH_CARD_TEXT(card, 2, "L2Smaccb");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100567 cmd = (struct qeth_ipa_cmd *) data;
568 if (cmd->hdr.return_code) {
Carsten Otte847a50f2010-06-21 22:57:05 +0000569 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100570 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
Ursula Braun0666eb062009-05-19 21:38:39 +0000571 switch (cmd->hdr.return_code) {
572 case IPA_RC_L2_DUP_MAC:
573 case IPA_RC_L2_DUP_LAYER3_MAC:
574 dev_warn(&card->gdev->dev,
H Hartley Sweetend998ab02009-12-29 20:05:37 -0800575 "MAC address %pM already exists\n",
Ursula Braun221c17f2011-02-02 06:04:31 +0000576 cmd->data.setdelmac.mac);
Ursula Braun0666eb062009-05-19 21:38:39 +0000577 break;
578 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
579 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
580 dev_warn(&card->gdev->dev,
H Hartley Sweetend998ab02009-12-29 20:05:37 -0800581 "MAC address %pM is not authorized\n",
Ursula Braun221c17f2011-02-02 06:04:31 +0000582 cmd->data.setdelmac.mac);
Ursula Braun0666eb062009-05-19 21:38:39 +0000583 break;
584 default:
585 break;
586 }
Frank Blaschka4a71df52008-02-15 09:19:42 +0100587 cmd->hdr.return_code = -EIO;
588 } else {
589 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
590 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
591 OSA_ADDR_LEN);
Frank Blaschka74eacdb2008-12-25 13:39:49 +0100592 dev_info(&card->gdev->dev,
H Hartley Sweetend998ab02009-12-29 20:05:37 -0800593 "MAC address %pM successfully registered on device %s\n",
594 card->dev->dev_addr, card->dev->name);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100595 }
596 return 0;
597}
598
599static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
600{
Carsten Otte847a50f2010-06-21 22:57:05 +0000601 QETH_CARD_TEXT(card, 2, "L2Setmac");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100602 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
603 qeth_l2_send_setmac_cb);
604}
605
606static int qeth_l2_send_delmac_cb(struct qeth_card *card,
607 struct qeth_reply *reply,
608 unsigned long data)
609{
610 struct qeth_ipa_cmd *cmd;
611
Carsten Otte847a50f2010-06-21 22:57:05 +0000612 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100613 cmd = (struct qeth_ipa_cmd *) data;
614 if (cmd->hdr.return_code) {
Carsten Otte847a50f2010-06-21 22:57:05 +0000615 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100616 cmd->hdr.return_code = -EIO;
617 return 0;
618 }
619 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
620
621 return 0;
622}
623
624static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
625{
Carsten Otte847a50f2010-06-21 22:57:05 +0000626 QETH_CARD_TEXT(card, 2, "L2Delmac");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100627 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
628 return 0;
629 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
630 qeth_l2_send_delmac_cb);
631}
632
633static int qeth_l2_request_initial_mac(struct qeth_card *card)
634{
635 int rc = 0;
636 char vendor_pre[] = {0x02, 0x00, 0x00};
637
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +0200638 QETH_DBF_TEXT(SETUP, 2, "doL2init");
639 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
Frank Blaschka4a71df52008-02-15 09:19:42 +0100640
641 rc = qeth_query_setadapterparms(card);
642 if (rc) {
Frank Blaschka14cc21b2008-06-06 12:37:46 +0200643 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
644 "device %s: x%x\n", CARD_BUS_ID(card), rc);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100645 }
646
Ursula Braun5113fec2010-05-16 21:15:14 +0000647 if (card->info.type == QETH_CARD_TYPE_IQD ||
648 card->info.type == QETH_CARD_TYPE_OSM ||
649 card->info.type == QETH_CARD_TYPE_OSX ||
650 card->info.guestlan) {
Frank Blaschka4a71df52008-02-15 09:19:42 +0100651 rc = qeth_setadpparms_change_macaddr(card);
652 if (rc) {
Frank Blaschka14cc21b2008-06-06 12:37:46 +0200653 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
654 "device %s: x%x\n", CARD_BUS_ID(card), rc);
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +0200655 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100656 return rc;
657 }
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +0200658 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100659 } else {
660 random_ether_addr(card->dev->dev_addr);
661 memcpy(card->dev->dev_addr, vendor_pre, 3);
662 }
663 return 0;
664}
665
666static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
667{
668 struct sockaddr *addr = p;
Heiko Carstens509e2562008-07-26 02:24:10 -0700669 struct qeth_card *card = dev->ml_priv;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100670 int rc = 0;
671
Carsten Otte847a50f2010-06-21 22:57:05 +0000672 QETH_CARD_TEXT(card, 3, "setmac");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100673
674 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
Carsten Otte847a50f2010-06-21 22:57:05 +0000675 QETH_CARD_TEXT(card, 3, "setmcINV");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100676 return -EOPNOTSUPP;
677 }
678
Ursula Braun5113fec2010-05-16 21:15:14 +0000679 if (card->info.type == QETH_CARD_TYPE_OSN ||
680 card->info.type == QETH_CARD_TYPE_OSM ||
681 card->info.type == QETH_CARD_TYPE_OSX) {
Carsten Otte847a50f2010-06-21 22:57:05 +0000682 QETH_CARD_TEXT(card, 3, "setmcTYP");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100683 return -EOPNOTSUPP;
684 }
Carsten Otte847a50f2010-06-21 22:57:05 +0000685 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
Ursula Braun8e98ac42009-03-24 20:57:18 +0000686 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
Carsten Otte847a50f2010-06-21 22:57:05 +0000687 QETH_CARD_TEXT(card, 3, "setmcREC");
Ursula Braun8e98ac42009-03-24 20:57:18 +0000688 return -ERESTARTSYS;
689 }
Frank Blaschka4a71df52008-02-15 09:19:42 +0100690 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
691 if (!rc)
692 rc = qeth_l2_send_setmac(card, addr->sa_data);
693 return rc;
694}
695
696static void qeth_l2_set_multicast_list(struct net_device *dev)
697{
Heiko Carstens509e2562008-07-26 02:24:10 -0700698 struct qeth_card *card = dev->ml_priv;
Jiri Pirkoccffad252009-05-22 23:22:17 +0000699 struct netdev_hw_addr *ha;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100700
701 if (card->info.type == QETH_CARD_TYPE_OSN)
702 return ;
703
Carsten Otte847a50f2010-06-21 22:57:05 +0000704 QETH_CARD_TEXT(card, 3, "setmulti");
Ursula Braun8e98ac42009-03-24 20:57:18 +0000705 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
706 (card->state != CARD_STATE_UP))
707 return;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100708 qeth_l2_del_all_mc(card);
709 spin_lock_bh(&card->mclock);
Jiri Pirko22bedad32010-04-01 21:22:57 +0000710 netdev_for_each_mc_addr(ha, dev)
711 qeth_l2_add_mc(card, ha->addr, 0);
Frank Blaschka7db22662008-08-15 08:02:59 +0200712
Jiri Pirko32e7bfc2010-01-25 13:36:10 -0800713 netdev_for_each_uc_addr(ha, dev)
Jiri Pirkoccffad252009-05-22 23:22:17 +0000714 qeth_l2_add_mc(card, ha->addr, 1);
Frank Blaschka7db22662008-08-15 08:02:59 +0200715
Frank Blaschka4a71df52008-02-15 09:19:42 +0100716 spin_unlock_bh(&card->mclock);
717 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
718 return;
719 qeth_setadp_promisc_mode(card);
720}
721
722static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
723{
724 int rc;
725 struct qeth_hdr *hdr = NULL;
726 int elements = 0;
Heiko Carstens509e2562008-07-26 02:24:10 -0700727 struct qeth_card *card = dev->ml_priv;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100728 struct sk_buff *new_skb = skb;
729 int ipv = qeth_get_ip_version(skb);
Klaus-Dieter Wackerce73e102009-08-26 02:01:08 +0000730 int cast_type = qeth_l2_get_cast_type(card, skb);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100731 struct qeth_qdio_out_q *queue = card->qdio.out_qs
732 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
733 int tx_bytes = skb->len;
Frank Blaschka683d7182008-08-01 16:39:13 +0200734 int data_offset = -1;
735 int elements_needed = 0;
736 int hd_len = 0;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100737
Frank Blaschka4a71df52008-02-15 09:19:42 +0100738 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
739 card->stats.tx_carrier_errors++;
740 goto tx_drop;
741 }
742
743 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
744 (skb->protocol == htons(ETH_P_IPV6)))
745 goto tx_drop;
746
747 if (card->options.performance_stats) {
748 card->perf_stats.outbound_cnt++;
749 card->perf_stats.outbound_start_time = qeth_get_micros();
750 }
751 netif_stop_queue(dev);
752
Frank Blaschka4a71df52008-02-15 09:19:42 +0100753 if (card->info.type == QETH_CARD_TYPE_OSN)
754 hdr = (struct qeth_hdr *)skb->data;
755 else {
Frank Blaschka64ef8952009-03-24 20:57:16 +0000756 if (card->info.type == QETH_CARD_TYPE_IQD) {
Frank Blaschka683d7182008-08-01 16:39:13 +0200757 new_skb = skb;
758 data_offset = ETH_HLEN;
759 hd_len = ETH_HLEN;
760 hdr = kmem_cache_alloc(qeth_core_header_cache,
761 GFP_ATOMIC);
762 if (!hdr)
763 goto tx_drop;
764 elements_needed++;
765 skb_reset_mac_header(new_skb);
766 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
767 hdr->hdr.l2.pkt_length = new_skb->len;
768 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
769 skb_mac_header(new_skb), ETH_HLEN);
770 } else {
771 /* create a clone with writeable headroom */
772 new_skb = skb_realloc_headroom(skb,
Frank Blaschkaf90b7442008-04-24 10:15:24 +0200773 sizeof(struct qeth_hdr));
Frank Blaschka683d7182008-08-01 16:39:13 +0200774 if (!new_skb)
775 goto tx_drop;
776 hdr = (struct qeth_hdr *)skb_push(new_skb,
777 sizeof(struct qeth_hdr));
778 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
779 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
780 }
Frank Blaschka4a71df52008-02-15 09:19:42 +0100781 }
782
Frank Blaschka64ef8952009-03-24 20:57:16 +0000783 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
Frank Blaschka683d7182008-08-01 16:39:13 +0200784 elements_needed);
Frank Blaschka64ef8952009-03-24 20:57:16 +0000785 if (!elements) {
786 if (data_offset >= 0)
787 kmem_cache_free(qeth_core_header_cache, hdr);
788 goto tx_drop;
Frank Blaschkaf61a0d02009-03-24 20:57:15 +0000789 }
Frank Blaschka4a71df52008-02-15 09:19:42 +0100790
Frank Blaschka51aa1652010-06-21 22:57:10 +0000791 if (card->info.type != QETH_CARD_TYPE_IQD) {
792 if (qeth_hdr_chk_and_bounce(new_skb,
793 sizeof(struct qeth_hdr_layer2)))
794 goto tx_drop;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100795 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
Frank Blaschka64ef8952009-03-24 20:57:16 +0000796 elements);
Frank Blaschka51aa1652010-06-21 22:57:10 +0000797 } else
Frank Blaschka4a71df52008-02-15 09:19:42 +0100798 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
Frank Blaschka64ef8952009-03-24 20:57:16 +0000799 elements, data_offset, hd_len);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100800 if (!rc) {
801 card->stats.tx_packets++;
802 card->stats.tx_bytes += tx_bytes;
803 if (new_skb != skb)
804 dev_kfree_skb_any(skb);
Patrick McHardyec634fe2009-07-05 19:23:38 -0700805 rc = NETDEV_TX_OK;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100806 } else {
Frank Blaschka683d7182008-08-01 16:39:13 +0200807 if (data_offset >= 0)
808 kmem_cache_free(qeth_core_header_cache, hdr);
809
Frank Blaschka4a71df52008-02-15 09:19:42 +0100810 if (rc == -EBUSY) {
811 if (new_skb != skb)
812 dev_kfree_skb_any(new_skb);
813 return NETDEV_TX_BUSY;
814 } else
815 goto tx_drop;
816 }
817
818 netif_wake_queue(dev);
819 if (card->options.performance_stats)
820 card->perf_stats.outbound_time += qeth_get_micros() -
821 card->perf_stats.outbound_start_time;
822 return rc;
823
824tx_drop:
825 card->stats.tx_dropped++;
826 card->stats.tx_errors++;
827 if ((new_skb != skb) && new_skb)
828 dev_kfree_skb_any(new_skb);
829 dev_kfree_skb_any(skb);
Frank Blaschkad0ec0f52008-06-06 12:37:48 +0200830 netif_wake_queue(dev);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100831 return NETDEV_TX_OK;
832}
833
Ursula Braun39423442011-01-12 20:42:24 +0000834static int __qeth_l2_open(struct net_device *dev)
Frank Blaschka4a71df52008-02-15 09:19:42 +0100835{
Heiko Carstens509e2562008-07-26 02:24:10 -0700836 struct qeth_card *card = dev->ml_priv;
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000837 int rc = 0;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100838
Carsten Otte847a50f2010-06-21 22:57:05 +0000839 QETH_CARD_TEXT(card, 4, "qethopen");
Ursula Braun39423442011-01-12 20:42:24 +0000840 if (card->state == CARD_STATE_UP)
841 return rc;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100842 if (card->state != CARD_STATE_SOFTSETUP)
843 return -ENODEV;
844
845 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
846 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
Carsten Otte847a50f2010-06-21 22:57:05 +0000847 QETH_CARD_TEXT(card, 4, "nomacadr");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100848 return -EPERM;
849 }
850 card->data.state = CH_STATE_UP;
851 card->state = CARD_STATE_UP;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100852 netif_start_queue(dev);
853
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000854 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
855 napi_enable(&card->napi);
856 napi_schedule(&card->napi);
857 } else
858 rc = -EIO;
859 return rc;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100860}
861
Ursula Braun39423442011-01-12 20:42:24 +0000862static int qeth_l2_open(struct net_device *dev)
863{
864 struct qeth_card *card = dev->ml_priv;
865
866 QETH_CARD_TEXT(card, 5, "qethope_");
867 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
868 QETH_CARD_TEXT(card, 3, "openREC");
869 return -ERESTARTSYS;
870 }
871 return __qeth_l2_open(dev);
872}
873
Frank Blaschka4a71df52008-02-15 09:19:42 +0100874static int qeth_l2_stop(struct net_device *dev)
875{
Heiko Carstens509e2562008-07-26 02:24:10 -0700876 struct qeth_card *card = dev->ml_priv;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100877
Carsten Otte847a50f2010-06-21 22:57:05 +0000878 QETH_CARD_TEXT(card, 4, "qethstop");
Frank Blaschka4a71df52008-02-15 09:19:42 +0100879 netif_tx_disable(dev);
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000880 if (card->state == CARD_STATE_UP) {
Frank Blaschka4a71df52008-02-15 09:19:42 +0100881 card->state = CARD_STATE_SOFTSETUP;
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000882 napi_disable(&card->napi);
883 }
Frank Blaschka4a71df52008-02-15 09:19:42 +0100884 return 0;
885}
886
887static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
888{
889 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
890
891 INIT_LIST_HEAD(&card->vid_list);
892 INIT_LIST_HEAD(&card->mc_list);
893 card->options.layer2 = 1;
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000894 card->discipline.start_poll = qeth_qdio_start_poll;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100895 card->discipline.input_handler = (qdio_handler_t *)
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000896 qeth_qdio_input_handler;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100897 card->discipline.output_handler = (qdio_handler_t *)
898 qeth_qdio_output_handler;
899 card->discipline.recover = qeth_l2_recover;
900 return 0;
901}
902
903static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
904{
905 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
906
Ursula Braunf2148562009-05-19 21:38:37 +0000907 qeth_set_allowed_threads(card, 0, 1);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100908 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
909
910 if (cgdev->state == CCWGROUP_ONLINE) {
911 card->use_hard_stop = 1;
912 qeth_l2_set_offline(cgdev);
913 }
914
915 if (card->dev) {
916 unregister_netdev(card->dev);
917 card->dev = NULL;
918 }
Frank Blaschka4a71df52008-02-15 09:19:42 +0100919 return;
920}
921
Stephen Hemminger0fc0b732009-09-02 01:03:33 -0700922static const struct ethtool_ops qeth_l2_ethtool_ops = {
Frank Blaschka4a71df52008-02-15 09:19:42 +0100923 .get_link = ethtool_op_get_link,
Frank Blaschka4a71df52008-02-15 09:19:42 +0100924 .get_strings = qeth_core_get_strings,
925 .get_ethtool_stats = qeth_core_get_ethtool_stats,
Ben Hutchingsdf8b4ec2009-10-01 11:24:32 +0000926 .get_sset_count = qeth_core_get_sset_count,
Frank Blaschka4a71df52008-02-15 09:19:42 +0100927 .get_drvinfo = qeth_core_get_drvinfo,
Frank Blaschka3f9975a2008-04-24 10:15:23 +0200928 .get_settings = qeth_core_ethtool_get_settings,
Frank Blaschka4a71df52008-02-15 09:19:42 +0100929};
930
Stephen Hemminger0fc0b732009-09-02 01:03:33 -0700931static const struct ethtool_ops qeth_l2_osn_ops = {
Frank Blaschka4a71df52008-02-15 09:19:42 +0100932 .get_strings = qeth_core_get_strings,
933 .get_ethtool_stats = qeth_core_get_ethtool_stats,
Ben Hutchingsdf8b4ec2009-10-01 11:24:32 +0000934 .get_sset_count = qeth_core_get_sset_count,
Frank Blaschka4a71df52008-02-15 09:19:42 +0100935 .get_drvinfo = qeth_core_get_drvinfo,
936};
937
Frank Blaschka3d58cef2009-01-09 03:44:00 +0000938static const struct net_device_ops qeth_l2_netdev_ops = {
Frank Blaschka8403b132009-01-08 10:50:55 -0800939 .ndo_open = qeth_l2_open,
940 .ndo_stop = qeth_l2_stop,
941 .ndo_get_stats = qeth_get_stats,
942 .ndo_start_xmit = qeth_l2_hard_start_xmit,
943 .ndo_validate_addr = eth_validate_addr,
944 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
945 .ndo_do_ioctl = qeth_l2_do_ioctl,
946 .ndo_set_mac_address = qeth_l2_set_mac_address,
947 .ndo_change_mtu = qeth_change_mtu,
948 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
949 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
950 .ndo_tx_timeout = qeth_tx_timeout,
951};
952
Frank Blaschka4a71df52008-02-15 09:19:42 +0100953static int qeth_l2_setup_netdev(struct qeth_card *card)
954{
955 switch (card->info.type) {
Frank Blaschka4a71df52008-02-15 09:19:42 +0100956 case QETH_CARD_TYPE_IQD:
957 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
958 break;
959 case QETH_CARD_TYPE_OSN:
960 card->dev = alloc_netdev(0, "osn%d", ether_setup);
961 card->dev->flags |= IFF_NOARP;
962 break;
963 default:
964 card->dev = alloc_etherdev(0);
965 }
966
967 if (!card->dev)
968 return -ENODEV;
969
Heiko Carstens509e2562008-07-26 02:24:10 -0700970 card->dev->ml_priv = card;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100971 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100972 card->dev->mtu = card->info.initial_mtu;
Frank Blaschka8403b132009-01-08 10:50:55 -0800973 card->dev->netdev_ops = &qeth_l2_netdev_ops;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100974 if (card->info.type != QETH_CARD_TYPE_OSN)
975 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
976 else
977 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
978 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
979 card->info.broadcast_capable = 1;
980 qeth_l2_request_initial_mac(card);
981 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +0000982 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
Frank Blaschka4a71df52008-02-15 09:19:42 +0100983 return register_netdev(card->dev);
984}
985
986static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
987{
988 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
989 int rc = 0;
990 enum qeth_card_states recover_flag;
991
992 BUG_ON(!card);
Ursula Braun9dc48cc2010-07-22 23:15:05 +0000993 mutex_lock(&card->discipline_mutex);
Frank Blaschkac4949f02010-05-11 19:34:47 +0000994 mutex_lock(&card->conf_mutex);
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +0200995 QETH_DBF_TEXT(SETUP, 2, "setonlin");
996 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
Frank Blaschka4a71df52008-02-15 09:19:42 +0100997
Frank Blaschka4a71df52008-02-15 09:19:42 +0100998 recover_flag = card->state;
Frank Blaschka4a71df52008-02-15 09:19:42 +0100999 rc = qeth_core_hardsetup_card(card);
1000 if (rc) {
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +02001001 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
Ursula Braunaa909222009-11-12 00:11:43 +00001002 rc = -ENODEV;
Frank Blaschka4a71df52008-02-15 09:19:42 +01001003 goto out_remove;
1004 }
1005
Ursula Braunaa909222009-11-12 00:11:43 +00001006 if (!card->dev && qeth_l2_setup_netdev(card)) {
1007 rc = -ENODEV;
Frank Blaschka4a71df52008-02-15 09:19:42 +01001008 goto out_remove;
Ursula Braunaa909222009-11-12 00:11:43 +00001009 }
Frank Blaschka4a71df52008-02-15 09:19:42 +01001010
1011 if (card->info.type != QETH_CARD_TYPE_OSN)
1012 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1013
1014 card->state = CARD_STATE_HARDSETUP;
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +00001015 memset(&card->rx, 0, sizeof(struct qeth_rx));
Frank Blaschka4a71df52008-02-15 09:19:42 +01001016 qeth_print_status_message(card);
1017
1018 /* softsetup */
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +02001019 QETH_DBF_TEXT(SETUP, 2, "softsetp");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001020
1021 rc = qeth_send_startlan(card);
1022 if (rc) {
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +02001023 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001024 if (rc == 0xe080) {
Frank Blaschka74eacdb2008-12-25 13:39:49 +01001025 dev_warn(&card->gdev->dev,
1026 "The LAN is offline\n");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001027 card->lan_online = 0;
Ursula Braun2b6203b2010-11-26 02:41:19 +00001028 goto contin;
Frank Blaschka4a71df52008-02-15 09:19:42 +01001029 }
Ursula Braunaa909222009-11-12 00:11:43 +00001030 rc = -ENODEV;
Ursula Braunf2148562009-05-19 21:38:37 +00001031 goto out_remove;
Frank Blaschka4a71df52008-02-15 09:19:42 +01001032 } else
1033 card->lan_online = 1;
1034
Ursula Braun2b6203b2010-11-26 02:41:19 +00001035contin:
Ursula Braun5113fec2010-05-16 21:15:14 +00001036 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1037 (card->info.type == QETH_CARD_TYPE_OSX))
Einar Lueckd64ecc22009-11-12 00:11:41 +00001038 /* configure isolation level */
1039 qeth_set_access_ctrl_online(card);
Ursula Braun5113fec2010-05-16 21:15:14 +00001040
1041 if (card->info.type != QETH_CARD_TYPE_OSN &&
1042 card->info.type != QETH_CARD_TYPE_OSM)
Frank Blaschka4a71df52008-02-15 09:19:42 +01001043 qeth_l2_process_vlans(card, 0);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001044
1045 netif_tx_disable(card->dev);
1046
1047 rc = qeth_init_qdio_queues(card);
1048 if (rc) {
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +02001049 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
Ursula Braunaa909222009-11-12 00:11:43 +00001050 rc = -ENODEV;
Frank Blaschka4a71df52008-02-15 09:19:42 +01001051 goto out_remove;
1052 }
1053 card->state = CARD_STATE_SOFTSETUP;
Ursula Braun2b6203b2010-11-26 02:41:19 +00001054 if (card->lan_online)
1055 netif_carrier_on(card->dev);
1056 else
1057 netif_carrier_off(card->dev);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001058
1059 qeth_set_allowed_threads(card, 0xffffffff, 0);
1060 if (recover_flag == CARD_STATE_RECOVER) {
1061 if (recovery_mode &&
1062 card->info.type != QETH_CARD_TYPE_OSN) {
Ursula Braun39423442011-01-12 20:42:24 +00001063 __qeth_l2_open(card->dev);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001064 } else {
1065 rtnl_lock();
1066 dev_open(card->dev);
1067 rtnl_unlock();
1068 }
1069 /* this also sets saved unicast addresses */
1070 qeth_l2_set_multicast_list(card->dev);
1071 }
1072 /* let user_space know that device is online */
1073 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
Frank Blaschkac4949f02010-05-11 19:34:47 +00001074 mutex_unlock(&card->conf_mutex);
Ursula Braun9dc48cc2010-07-22 23:15:05 +00001075 mutex_unlock(&card->discipline_mutex);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001076 return 0;
Ursula Braunaa909222009-11-12 00:11:43 +00001077
Frank Blaschka4a71df52008-02-15 09:19:42 +01001078out_remove:
1079 card->use_hard_stop = 1;
1080 qeth_l2_stop_card(card, 0);
1081 ccw_device_set_offline(CARD_DDEV(card));
1082 ccw_device_set_offline(CARD_WDEV(card));
1083 ccw_device_set_offline(CARD_RDEV(card));
1084 if (recover_flag == CARD_STATE_RECOVER)
1085 card->state = CARD_STATE_RECOVER;
1086 else
1087 card->state = CARD_STATE_DOWN;
Frank Blaschkac4949f02010-05-11 19:34:47 +00001088 mutex_unlock(&card->conf_mutex);
Ursula Braun9dc48cc2010-07-22 23:15:05 +00001089 mutex_unlock(&card->discipline_mutex);
Ursula Braunaa909222009-11-12 00:11:43 +00001090 return rc;
Frank Blaschka4a71df52008-02-15 09:19:42 +01001091}
1092
1093static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1094{
1095 return __qeth_l2_set_online(gdev, 0);
1096}
1097
1098static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1099 int recovery_mode)
1100{
1101 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1102 int rc = 0, rc2 = 0, rc3 = 0;
1103 enum qeth_card_states recover_flag;
1104
Ursula Braun9dc48cc2010-07-22 23:15:05 +00001105 mutex_lock(&card->discipline_mutex);
Frank Blaschkac4949f02010-05-11 19:34:47 +00001106 mutex_lock(&card->conf_mutex);
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +02001107 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1108 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
Frank Blaschka4a71df52008-02-15 09:19:42 +01001109
1110 if (card->dev && netif_carrier_ok(card->dev))
1111 netif_carrier_off(card->dev);
1112 recover_flag = card->state;
Ursula Braun0f5623c2008-10-24 11:16:52 +02001113 qeth_l2_stop_card(card, recovery_mode);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001114 rc = ccw_device_set_offline(CARD_DDEV(card));
1115 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1116 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1117 if (!rc)
1118 rc = (rc2) ? rc2 : rc3;
1119 if (rc)
Peter Tiedemannd11ba0c2008-04-01 10:26:58 +02001120 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001121 if (recover_flag == CARD_STATE_UP)
1122 card->state = CARD_STATE_RECOVER;
1123 /* let user_space know that device is offline */
1124 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
Frank Blaschkac4949f02010-05-11 19:34:47 +00001125 mutex_unlock(&card->conf_mutex);
Ursula Braun9dc48cc2010-07-22 23:15:05 +00001126 mutex_unlock(&card->discipline_mutex);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001127 return 0;
1128}
1129
1130static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1131{
1132 return __qeth_l2_set_offline(cgdev, 0);
1133}
1134
1135static int qeth_l2_recover(void *ptr)
1136{
1137 struct qeth_card *card;
1138 int rc = 0;
1139
1140 card = (struct qeth_card *) ptr;
Carsten Otte847a50f2010-06-21 22:57:05 +00001141 QETH_CARD_TEXT(card, 2, "recover1");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001142 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1143 return 0;
Carsten Otte847a50f2010-06-21 22:57:05 +00001144 QETH_CARD_TEXT(card, 2, "recover2");
Frank Blaschka74eacdb2008-12-25 13:39:49 +01001145 dev_warn(&card->gdev->dev,
1146 "A recovery process has been started for the device\n");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001147 card->use_hard_stop = 1;
1148 __qeth_l2_set_offline(card->gdev, 1);
1149 rc = __qeth_l2_set_online(card->gdev, 1);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001150 if (!rc)
Frank Blaschka74eacdb2008-12-25 13:39:49 +01001151 dev_info(&card->gdev->dev,
1152 "Device successfully recovered!\n");
Ursula Braun28a7e4c2008-09-19 12:56:03 +02001153 else {
Ursula Braun869da902010-03-08 20:36:56 +00001154 rtnl_lock();
1155 dev_close(card->dev);
1156 rtnl_unlock();
Frank Blaschka74eacdb2008-12-25 13:39:49 +01001157 dev_warn(&card->gdev->dev, "The qeth device driver "
1158 "failed to recover an error on the device\n");
Ursula Braun28a7e4c2008-09-19 12:56:03 +02001159 }
Frank Blaschkaa1c3ed42010-09-07 21:14:42 +00001160 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1161 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001162 return 0;
1163}
1164
1165static int __init qeth_l2_init(void)
1166{
Frank Blaschka74eacdb2008-12-25 13:39:49 +01001167 pr_info("register layer 2 discipline\n");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001168 return 0;
1169}
1170
1171static void __exit qeth_l2_exit(void)
1172{
Frank Blaschka74eacdb2008-12-25 13:39:49 +01001173 pr_info("unregister layer 2 discipline\n");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001174}
1175
1176static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1177{
1178 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1179 qeth_qdio_clear_card(card, 0);
1180 qeth_clear_qdio_buffers(card);
1181}
1182
Frank Blaschkabbcfcdc2009-06-16 10:30:31 +02001183static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1184{
1185 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1186
1187 if (card->dev)
1188 netif_device_detach(card->dev);
1189 qeth_set_allowed_threads(card, 0, 1);
1190 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1191 if (gdev->state == CCWGROUP_OFFLINE)
1192 return 0;
1193 if (card->state == CARD_STATE_UP) {
1194 card->use_hard_stop = 1;
1195 __qeth_l2_set_offline(card->gdev, 1);
1196 } else
1197 __qeth_l2_set_offline(card->gdev, 0);
1198 return 0;
1199}
1200
1201static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1202{
1203 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1204 int rc = 0;
1205
1206 if (gdev->state == CCWGROUP_OFFLINE)
1207 goto out;
1208
1209 if (card->state == CARD_STATE_RECOVER) {
1210 rc = __qeth_l2_set_online(card->gdev, 1);
1211 if (rc) {
Ursula Braun869da902010-03-08 20:36:56 +00001212 rtnl_lock();
1213 dev_close(card->dev);
1214 rtnl_unlock();
Frank Blaschkabbcfcdc2009-06-16 10:30:31 +02001215 }
1216 } else
1217 rc = __qeth_l2_set_online(card->gdev, 0);
1218out:
1219 qeth_set_allowed_threads(card, 0xffffffff, 0);
1220 if (card->dev)
1221 netif_device_attach(card->dev);
1222 if (rc)
1223 dev_warn(&card->gdev->dev, "The qeth device driver "
1224 "failed to recover an error on the device\n");
1225 return rc;
1226}
1227
Frank Blaschka4a71df52008-02-15 09:19:42 +01001228struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1229 .probe = qeth_l2_probe_device,
1230 .remove = qeth_l2_remove_device,
1231 .set_online = qeth_l2_set_online,
1232 .set_offline = qeth_l2_set_offline,
1233 .shutdown = qeth_l2_shutdown,
Frank Blaschkabbcfcdc2009-06-16 10:30:31 +02001234 .freeze = qeth_l2_pm_suspend,
1235 .thaw = qeth_l2_pm_resume,
1236 .restore = qeth_l2_pm_resume,
Frank Blaschka4a71df52008-02-15 09:19:42 +01001237};
1238EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1239
1240static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1241 struct qeth_cmd_buffer *iob)
1242{
1243 unsigned long flags;
1244 int rc = 0;
1245
Carsten Otte847a50f2010-06-21 22:57:05 +00001246 QETH_CARD_TEXT(card, 5, "osndctrd");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001247
1248 wait_event(card->wait_q,
1249 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1250 qeth_prepare_control_data(card, len, iob);
Carsten Otte847a50f2010-06-21 22:57:05 +00001251 QETH_CARD_TEXT(card, 6, "osnoirqp");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001252 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1253 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1254 (addr_t) iob, 0, 0);
1255 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1256 if (rc) {
Frank Blaschka14cc21b2008-06-06 12:37:46 +02001257 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
Frank Blaschka4a71df52008-02-15 09:19:42 +01001258 "ccw_device_start rc = %i\n", rc);
Carsten Otte847a50f2010-06-21 22:57:05 +00001259 QETH_CARD_TEXT_(card, 2, " err%d", rc);
Frank Blaschka4a71df52008-02-15 09:19:42 +01001260 qeth_release_buffer(iob->channel, iob);
1261 atomic_set(&card->write.irq_pending, 0);
1262 wake_up(&card->wait_q);
1263 }
1264 return rc;
1265}
1266
1267static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1268 struct qeth_cmd_buffer *iob, int data_len)
1269{
1270 u16 s1, s2;
1271
Carsten Otte847a50f2010-06-21 22:57:05 +00001272 QETH_CARD_TEXT(card, 4, "osndipa");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001273
1274 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1275 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1276 s2 = (u16)data_len;
1277 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1278 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1279 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1280 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1281 return qeth_osn_send_control_data(card, s1, iob);
1282}
1283
1284int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1285{
1286 struct qeth_cmd_buffer *iob;
1287 struct qeth_card *card;
1288 int rc;
1289
Frank Blaschka4a71df52008-02-15 09:19:42 +01001290 if (!dev)
1291 return -ENODEV;
Heiko Carstens509e2562008-07-26 02:24:10 -07001292 card = dev->ml_priv;
Frank Blaschka4a71df52008-02-15 09:19:42 +01001293 if (!card)
1294 return -ENODEV;
Carsten Otte847a50f2010-06-21 22:57:05 +00001295 QETH_CARD_TEXT(card, 2, "osnsdmc");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001296 if ((card->state != CARD_STATE_UP) &&
1297 (card->state != CARD_STATE_SOFTSETUP))
1298 return -ENODEV;
1299 iob = qeth_wait_for_buffer(&card->write);
1300 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1301 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1302 return rc;
1303}
1304EXPORT_SYMBOL(qeth_osn_assist);
1305
1306int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1307 int (*assist_cb)(struct net_device *, void *),
1308 int (*data_cb)(struct sk_buff *))
1309{
1310 struct qeth_card *card;
1311
Frank Blaschka4a71df52008-02-15 09:19:42 +01001312 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1313 if (*dev == NULL)
1314 return -ENODEV;
Heiko Carstens509e2562008-07-26 02:24:10 -07001315 card = (*dev)->ml_priv;
Frank Blaschka4a71df52008-02-15 09:19:42 +01001316 if (!card)
1317 return -ENODEV;
Carsten Otte847a50f2010-06-21 22:57:05 +00001318 QETH_CARD_TEXT(card, 2, "osnreg");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001319 if ((assist_cb == NULL) || (data_cb == NULL))
1320 return -EINVAL;
1321 card->osn_info.assist_cb = assist_cb;
1322 card->osn_info.data_cb = data_cb;
1323 return 0;
1324}
1325EXPORT_SYMBOL(qeth_osn_register);
1326
1327void qeth_osn_deregister(struct net_device *dev)
1328{
1329 struct qeth_card *card;
1330
Frank Blaschka4a71df52008-02-15 09:19:42 +01001331 if (!dev)
1332 return;
Heiko Carstens509e2562008-07-26 02:24:10 -07001333 card = dev->ml_priv;
Frank Blaschka4a71df52008-02-15 09:19:42 +01001334 if (!card)
1335 return;
Carsten Otte847a50f2010-06-21 22:57:05 +00001336 QETH_CARD_TEXT(card, 2, "osndereg");
Frank Blaschka4a71df52008-02-15 09:19:42 +01001337 card->osn_info.assist_cb = NULL;
1338 card->osn_info.data_cb = NULL;
1339 return;
1340}
1341EXPORT_SYMBOL(qeth_osn_deregister);
1342
1343module_init(qeth_l2_init);
1344module_exit(qeth_l2_exit);
1345MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1346MODULE_DESCRIPTION("qeth layer 2 discipline");
1347MODULE_LICENSE("GPL");