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4a71df50 FB |
1 | /* |
2 | * drivers/s390/net/qeth_l2_main.c | |
3 | * | |
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> | |
9 | */ | |
10 | ||
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> | |
18 | #include <linux/ip.h> | |
19 | ||
20 | #include <asm/s390_rdev.h> | |
21 | ||
22 | #include "qeth_core.h" | |
23 | #include "qeth_core_offl.h" | |
24 | ||
25 | #define QETH_DBF_TEXT_(name, level, text...) \ | |
26 | do { \ | |
27 | if (qeth_dbf_passes(qeth_dbf_##name, level)) { \ | |
28 | char *dbf_txt_buf = get_cpu_var(qeth_l2_dbf_txt_buf); \ | |
29 | sprintf(dbf_txt_buf, text); \ | |
30 | debug_text_event(qeth_dbf_##name, level, dbf_txt_buf); \ | |
31 | put_cpu_var(qeth_l2_dbf_txt_buf); \ | |
32 | } \ | |
33 | } while (0) | |
34 | ||
35 | static DEFINE_PER_CPU(char[256], qeth_l2_dbf_txt_buf); | |
36 | ||
37 | static int qeth_l2_set_offline(struct ccwgroup_device *); | |
38 | static int qeth_l2_stop(struct net_device *); | |
39 | static int qeth_l2_send_delmac(struct qeth_card *, __u8 *); | |
40 | static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *, | |
41 | enum qeth_ipa_cmds, | |
42 | int (*reply_cb) (struct qeth_card *, | |
43 | struct qeth_reply*, | |
44 | unsigned long)); | |
45 | static void qeth_l2_set_multicast_list(struct net_device *); | |
46 | static int qeth_l2_recover(void *); | |
47 | ||
48 | static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
49 | { | |
50 | struct qeth_card *card = netdev_priv(dev); | |
51 | struct mii_ioctl_data *mii_data; | |
52 | int rc = 0; | |
53 | ||
54 | if (!card) | |
55 | return -ENODEV; | |
56 | ||
57 | if ((card->state != CARD_STATE_UP) && | |
58 | (card->state != CARD_STATE_SOFTSETUP)) | |
59 | return -ENODEV; | |
60 | ||
61 | if (card->info.type == QETH_CARD_TYPE_OSN) | |
62 | return -EPERM; | |
63 | ||
64 | switch (cmd) { | |
65 | case SIOC_QETH_ADP_SET_SNMP_CONTROL: | |
66 | rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); | |
67 | break; | |
68 | case SIOC_QETH_GET_CARD_TYPE: | |
69 | if ((card->info.type == QETH_CARD_TYPE_OSAE) && | |
70 | !card->info.guestlan) | |
71 | return 1; | |
72 | return 0; | |
73 | break; | |
74 | case SIOCGMIIPHY: | |
75 | mii_data = if_mii(rq); | |
76 | mii_data->phy_id = 0; | |
77 | break; | |
78 | case SIOCGMIIREG: | |
79 | mii_data = if_mii(rq); | |
80 | if (mii_data->phy_id != 0) | |
81 | rc = -EINVAL; | |
82 | else | |
83 | mii_data->val_out = qeth_mdio_read(dev, | |
84 | mii_data->phy_id, mii_data->reg_num); | |
85 | break; | |
86 | default: | |
87 | rc = -EOPNOTSUPP; | |
88 | } | |
89 | if (rc) | |
90 | QETH_DBF_TEXT_(trace, 2, "ioce%d", rc); | |
91 | return rc; | |
92 | } | |
93 | ||
94 | static int qeth_l2_verify_dev(struct net_device *dev) | |
95 | { | |
96 | struct qeth_card *card; | |
97 | unsigned long flags; | |
98 | int rc = 0; | |
99 | ||
100 | read_lock_irqsave(&qeth_core_card_list.rwlock, flags); | |
101 | list_for_each_entry(card, &qeth_core_card_list.list, list) { | |
102 | if (card->dev == dev) { | |
103 | rc = QETH_REAL_CARD; | |
104 | break; | |
105 | } | |
106 | } | |
107 | read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); | |
108 | ||
109 | return rc; | |
110 | } | |
111 | ||
112 | static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) | |
113 | { | |
114 | struct qeth_card *card; | |
115 | struct net_device *ndev; | |
116 | unsigned char *readno; | |
117 | __u16 temp_dev_no, card_dev_no; | |
118 | char *endp; | |
119 | unsigned long flags; | |
120 | ||
121 | ndev = NULL; | |
122 | memcpy(&temp_dev_no, read_dev_no, 2); | |
123 | read_lock_irqsave(&qeth_core_card_list.rwlock, flags); | |
124 | list_for_each_entry(card, &qeth_core_card_list.list, list) { | |
125 | readno = CARD_RDEV_ID(card); | |
126 | readno += (strlen(readno) - 4); | |
127 | card_dev_no = simple_strtoul(readno, &endp, 16); | |
128 | if (card_dev_no == temp_dev_no) { | |
129 | ndev = card->dev; | |
130 | break; | |
131 | } | |
132 | } | |
133 | read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); | |
134 | return ndev; | |
135 | } | |
136 | ||
137 | static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card, | |
138 | struct qeth_reply *reply, | |
139 | unsigned long data) | |
140 | { | |
141 | struct qeth_ipa_cmd *cmd; | |
142 | __u8 *mac; | |
143 | ||
144 | QETH_DBF_TEXT(trace, 2, "L2Sgmacb"); | |
145 | cmd = (struct qeth_ipa_cmd *) data; | |
146 | mac = &cmd->data.setdelmac.mac[0]; | |
147 | /* MAC already registered, needed in couple/uncouple case */ | |
148 | if (cmd->hdr.return_code == 0x2005) { | |
149 | PRINT_WARN("Group MAC %02x:%02x:%02x:%02x:%02x:%02x " \ | |
150 | "already existing on %s \n", | |
151 | mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], | |
152 | QETH_CARD_IFNAME(card)); | |
153 | cmd->hdr.return_code = 0; | |
154 | } | |
155 | if (cmd->hdr.return_code) | |
156 | PRINT_ERR("Could not set group MAC " \ | |
157 | "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n", | |
158 | mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], | |
159 | QETH_CARD_IFNAME(card), cmd->hdr.return_code); | |
160 | return 0; | |
161 | } | |
162 | ||
163 | static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) | |
164 | { | |
165 | QETH_DBF_TEXT(trace, 2, "L2Sgmac"); | |
166 | return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC, | |
167 | qeth_l2_send_setgroupmac_cb); | |
168 | } | |
169 | ||
170 | static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card, | |
171 | struct qeth_reply *reply, | |
172 | unsigned long data) | |
173 | { | |
174 | struct qeth_ipa_cmd *cmd; | |
175 | __u8 *mac; | |
176 | ||
177 | QETH_DBF_TEXT(trace, 2, "L2Dgmacb"); | |
178 | cmd = (struct qeth_ipa_cmd *) data; | |
179 | mac = &cmd->data.setdelmac.mac[0]; | |
180 | if (cmd->hdr.return_code) | |
181 | PRINT_ERR("Could not delete group MAC " \ | |
182 | "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n", | |
183 | mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], | |
184 | QETH_CARD_IFNAME(card), cmd->hdr.return_code); | |
185 | return 0; | |
186 | } | |
187 | ||
188 | static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) | |
189 | { | |
190 | QETH_DBF_TEXT(trace, 2, "L2Dgmac"); | |
191 | return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC, | |
192 | qeth_l2_send_delgroupmac_cb); | |
193 | } | |
194 | ||
195 | static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac) | |
196 | { | |
197 | struct qeth_mc_mac *mc; | |
198 | ||
199 | mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC); | |
200 | ||
201 | if (!mc) { | |
202 | PRINT_ERR("no mem vor mc mac address\n"); | |
203 | return; | |
204 | } | |
205 | ||
206 | memcpy(mc->mc_addr, mac, OSA_ADDR_LEN); | |
207 | mc->mc_addrlen = OSA_ADDR_LEN; | |
208 | ||
209 | if (!qeth_l2_send_setgroupmac(card, mac)) | |
210 | list_add_tail(&mc->list, &card->mc_list); | |
211 | else | |
212 | kfree(mc); | |
213 | } | |
214 | ||
215 | static void qeth_l2_del_all_mc(struct qeth_card *card) | |
216 | { | |
217 | struct qeth_mc_mac *mc, *tmp; | |
218 | ||
219 | spin_lock_bh(&card->mclock); | |
220 | list_for_each_entry_safe(mc, tmp, &card->mc_list, list) { | |
221 | qeth_l2_send_delgroupmac(card, mc->mc_addr); | |
222 | list_del(&mc->list); | |
223 | kfree(mc); | |
224 | } | |
225 | spin_unlock_bh(&card->mclock); | |
226 | } | |
227 | ||
228 | static void qeth_l2_get_packet_type(struct qeth_card *card, | |
229 | struct qeth_hdr *hdr, struct sk_buff *skb) | |
230 | { | |
231 | __u16 hdr_mac; | |
232 | ||
233 | if (!memcmp(skb->data + QETH_HEADER_SIZE, | |
234 | skb->dev->broadcast, 6)) { | |
235 | /* broadcast? */ | |
236 | hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; | |
237 | return; | |
238 | } | |
239 | hdr_mac = *((__u16 *)skb->data); | |
240 | /* tr multicast? */ | |
241 | switch (card->info.link_type) { | |
242 | case QETH_LINK_TYPE_HSTR: | |
243 | case QETH_LINK_TYPE_LANE_TR: | |
244 | if ((hdr_mac == QETH_TR_MAC_NC) || | |
245 | (hdr_mac == QETH_TR_MAC_C)) | |
246 | hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; | |
247 | else | |
248 | hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; | |
249 | break; | |
250 | /* eth or so multicast? */ | |
251 | default: | |
252 | if ((hdr_mac == QETH_ETH_MAC_V4) || | |
253 | (hdr_mac == QETH_ETH_MAC_V6)) | |
254 | hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; | |
255 | else | |
256 | hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; | |
257 | } | |
258 | } | |
259 | ||
260 | static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, | |
261 | struct sk_buff *skb, int ipv, int cast_type) | |
262 | { | |
263 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)((skb->data) + | |
264 | QETH_HEADER_SIZE); | |
265 | ||
266 | memset(hdr, 0, sizeof(struct qeth_hdr)); | |
267 | hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; | |
268 | ||
269 | /* set byte byte 3 to casting flags */ | |
270 | if (cast_type == RTN_MULTICAST) | |
271 | hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; | |
272 | else if (cast_type == RTN_BROADCAST) | |
273 | hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; | |
274 | else | |
275 | qeth_l2_get_packet_type(card, hdr, skb); | |
276 | ||
277 | hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE; | |
278 | /* VSWITCH relies on the VLAN | |
279 | * information to be present in | |
280 | * the QDIO header */ | |
281 | if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { | |
282 | hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; | |
283 | hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); | |
284 | } | |
285 | } | |
286 | ||
287 | static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, | |
288 | struct qeth_reply *reply, unsigned long data) | |
289 | { | |
290 | struct qeth_ipa_cmd *cmd; | |
291 | ||
292 | QETH_DBF_TEXT(trace, 2, "L2sdvcb"); | |
293 | cmd = (struct qeth_ipa_cmd *) data; | |
294 | if (cmd->hdr.return_code) { | |
295 | PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. " | |
296 | "Continuing\n", cmd->data.setdelvlan.vlan_id, | |
297 | QETH_CARD_IFNAME(card), cmd->hdr.return_code); | |
298 | QETH_DBF_TEXT_(trace, 2, "L2VL%4x", cmd->hdr.command); | |
299 | QETH_DBF_TEXT_(trace, 2, "L2%s", CARD_BUS_ID(card)); | |
300 | QETH_DBF_TEXT_(trace, 2, "err%d", cmd->hdr.return_code); | |
301 | } | |
302 | return 0; | |
303 | } | |
304 | ||
305 | static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, | |
306 | enum qeth_ipa_cmds ipacmd) | |
307 | { | |
308 | struct qeth_ipa_cmd *cmd; | |
309 | struct qeth_cmd_buffer *iob; | |
310 | ||
311 | QETH_DBF_TEXT_(trace, 4, "L2sdv%x", ipacmd); | |
312 | iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); | |
313 | cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); | |
314 | cmd->data.setdelvlan.vlan_id = i; | |
315 | return qeth_send_ipa_cmd(card, iob, | |
316 | qeth_l2_send_setdelvlan_cb, NULL); | |
317 | } | |
318 | ||
319 | static void qeth_l2_process_vlans(struct qeth_card *card, int clear) | |
320 | { | |
321 | struct qeth_vlan_vid *id; | |
322 | QETH_DBF_TEXT(trace, 3, "L2prcvln"); | |
323 | spin_lock_bh(&card->vlanlock); | |
324 | list_for_each_entry(id, &card->vid_list, list) { | |
325 | if (clear) | |
326 | qeth_l2_send_setdelvlan(card, id->vid, | |
327 | IPA_CMD_DELVLAN); | |
328 | else | |
329 | qeth_l2_send_setdelvlan(card, id->vid, | |
330 | IPA_CMD_SETVLAN); | |
331 | } | |
332 | spin_unlock_bh(&card->vlanlock); | |
333 | } | |
334 | ||
335 | static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) | |
336 | { | |
337 | struct qeth_card *card = netdev_priv(dev); | |
338 | struct qeth_vlan_vid *id; | |
339 | ||
340 | QETH_DBF_TEXT_(trace, 4, "aid:%d", vid); | |
341 | id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); | |
342 | if (id) { | |
343 | id->vid = vid; | |
344 | qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); | |
345 | spin_lock_bh(&card->vlanlock); | |
346 | list_add_tail(&id->list, &card->vid_list); | |
347 | spin_unlock_bh(&card->vlanlock); | |
348 | } else { | |
349 | PRINT_ERR("no memory for vid\n"); | |
350 | } | |
351 | } | |
352 | ||
353 | static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) | |
354 | { | |
355 | struct qeth_vlan_vid *id, *tmpid = NULL; | |
356 | struct qeth_card *card = netdev_priv(dev); | |
357 | ||
358 | QETH_DBF_TEXT_(trace, 4, "kid:%d", vid); | |
359 | spin_lock_bh(&card->vlanlock); | |
360 | list_for_each_entry(id, &card->vid_list, list) { | |
361 | if (id->vid == vid) { | |
362 | list_del(&id->list); | |
363 | tmpid = id; | |
364 | break; | |
365 | } | |
366 | } | |
367 | spin_unlock_bh(&card->vlanlock); | |
368 | if (tmpid) { | |
369 | qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); | |
370 | kfree(tmpid); | |
371 | } | |
372 | qeth_l2_set_multicast_list(card->dev); | |
373 | } | |
374 | ||
375 | static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) | |
376 | { | |
377 | int rc = 0; | |
378 | ||
379 | QETH_DBF_TEXT(setup , 2, "stopcard"); | |
380 | QETH_DBF_HEX(setup, 2, &card, sizeof(void *)); | |
381 | ||
382 | qeth_set_allowed_threads(card, 0, 1); | |
383 | if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) | |
384 | return -ERESTARTSYS; | |
385 | if (card->read.state == CH_STATE_UP && | |
386 | card->write.state == CH_STATE_UP && | |
387 | (card->state == CARD_STATE_UP)) { | |
388 | if (recovery_mode && | |
389 | card->info.type != QETH_CARD_TYPE_OSN) { | |
390 | qeth_l2_stop(card->dev); | |
391 | } else { | |
392 | rtnl_lock(); | |
393 | dev_close(card->dev); | |
394 | rtnl_unlock(); | |
395 | } | |
396 | if (!card->use_hard_stop) { | |
397 | __u8 *mac = &card->dev->dev_addr[0]; | |
398 | rc = qeth_l2_send_delmac(card, mac); | |
399 | QETH_DBF_TEXT_(setup, 2, "Lerr%d", rc); | |
400 | } | |
401 | card->state = CARD_STATE_SOFTSETUP; | |
402 | } | |
403 | if (card->state == CARD_STATE_SOFTSETUP) { | |
404 | qeth_l2_process_vlans(card, 1); | |
405 | qeth_l2_del_all_mc(card); | |
406 | qeth_clear_ipacmd_list(card); | |
407 | card->state = CARD_STATE_HARDSETUP; | |
408 | } | |
409 | if (card->state == CARD_STATE_HARDSETUP) { | |
410 | qeth_qdio_clear_card(card, 0); | |
411 | qeth_clear_qdio_buffers(card); | |
412 | qeth_clear_working_pool_list(card); | |
413 | card->state = CARD_STATE_DOWN; | |
414 | } | |
415 | if (card->state == CARD_STATE_DOWN) { | |
416 | qeth_clear_cmd_buffers(&card->read); | |
417 | qeth_clear_cmd_buffers(&card->write); | |
418 | } | |
419 | card->use_hard_stop = 0; | |
420 | return rc; | |
421 | } | |
422 | ||
423 | static void qeth_l2_process_inbound_buffer(struct qeth_card *card, | |
424 | struct qeth_qdio_buffer *buf, int index) | |
425 | { | |
426 | struct qdio_buffer_element *element; | |
427 | struct sk_buff *skb; | |
428 | struct qeth_hdr *hdr; | |
429 | int offset; | |
430 | unsigned int len; | |
431 | ||
432 | /* get first element of current buffer */ | |
433 | element = (struct qdio_buffer_element *)&buf->buffer->element[0]; | |
434 | offset = 0; | |
435 | if (card->options.performance_stats) | |
436 | card->perf_stats.bufs_rec++; | |
437 | while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element, | |
438 | &offset, &hdr))) { | |
439 | skb->dev = card->dev; | |
440 | /* is device UP ? */ | |
441 | if (!(card->dev->flags & IFF_UP)) { | |
442 | dev_kfree_skb_any(skb); | |
443 | continue; | |
444 | } | |
445 | ||
446 | switch (hdr->hdr.l2.id) { | |
447 | case QETH_HEADER_TYPE_LAYER2: | |
448 | skb->pkt_type = PACKET_HOST; | |
449 | skb->protocol = eth_type_trans(skb, skb->dev); | |
450 | if (card->options.checksum_type == NO_CHECKSUMMING) | |
451 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
452 | else | |
453 | skb->ip_summed = CHECKSUM_NONE; | |
454 | *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; | |
455 | len = skb->len; | |
456 | netif_rx(skb); | |
457 | break; | |
458 | case QETH_HEADER_TYPE_OSN: | |
459 | skb_push(skb, sizeof(struct qeth_hdr)); | |
460 | skb_copy_to_linear_data(skb, hdr, | |
461 | sizeof(struct qeth_hdr)); | |
462 | len = skb->len; | |
463 | card->osn_info.data_cb(skb); | |
464 | break; | |
465 | default: | |
466 | dev_kfree_skb_any(skb); | |
467 | QETH_DBF_TEXT(trace, 3, "inbunkno"); | |
468 | QETH_DBF_HEX(control, 3, hdr, QETH_DBF_CONTROL_LEN); | |
469 | continue; | |
470 | } | |
471 | card->dev->last_rx = jiffies; | |
472 | card->stats.rx_packets++; | |
473 | card->stats.rx_bytes += len; | |
474 | } | |
475 | } | |
476 | ||
477 | static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, | |
478 | enum qeth_ipa_cmds ipacmd, | |
479 | int (*reply_cb) (struct qeth_card *, | |
480 | struct qeth_reply*, | |
481 | unsigned long)) | |
482 | { | |
483 | struct qeth_ipa_cmd *cmd; | |
484 | struct qeth_cmd_buffer *iob; | |
485 | ||
486 | QETH_DBF_TEXT(trace, 2, "L2sdmac"); | |
487 | iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); | |
488 | cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); | |
489 | cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; | |
490 | memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); | |
491 | return qeth_send_ipa_cmd(card, iob, reply_cb, NULL); | |
492 | } | |
493 | ||
494 | static int qeth_l2_send_setmac_cb(struct qeth_card *card, | |
495 | struct qeth_reply *reply, | |
496 | unsigned long data) | |
497 | { | |
498 | struct qeth_ipa_cmd *cmd; | |
499 | ||
500 | QETH_DBF_TEXT(trace, 2, "L2Smaccb"); | |
501 | cmd = (struct qeth_ipa_cmd *) data; | |
502 | if (cmd->hdr.return_code) { | |
503 | QETH_DBF_TEXT_(trace, 2, "L2er%x", cmd->hdr.return_code); | |
504 | card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; | |
505 | cmd->hdr.return_code = -EIO; | |
506 | } else { | |
507 | card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; | |
508 | memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac, | |
509 | OSA_ADDR_LEN); | |
510 | PRINT_INFO("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], | |
515 | card->dev->name); | |
516 | } | |
517 | return 0; | |
518 | } | |
519 | ||
520 | static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) | |
521 | { | |
522 | QETH_DBF_TEXT(trace, 2, "L2Setmac"); | |
523 | return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC, | |
524 | qeth_l2_send_setmac_cb); | |
525 | } | |
526 | ||
527 | static int qeth_l2_send_delmac_cb(struct qeth_card *card, | |
528 | struct qeth_reply *reply, | |
529 | unsigned long data) | |
530 | { | |
531 | struct qeth_ipa_cmd *cmd; | |
532 | ||
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; | |
538 | return 0; | |
539 | } | |
540 | card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; | |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
545 | static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) | |
546 | { | |
547 | QETH_DBF_TEXT(trace, 2, "L2Delmac"); | |
548 | if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) | |
549 | return 0; | |
550 | return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC, | |
551 | qeth_l2_send_delmac_cb); | |
552 | } | |
553 | ||
554 | static int qeth_l2_request_initial_mac(struct qeth_card *card) | |
555 | { | |
556 | int rc = 0; | |
557 | char vendor_pre[] = {0x02, 0x00, 0x00}; | |
558 | ||
559 | QETH_DBF_TEXT(setup, 2, "doL2init"); | |
560 | QETH_DBF_TEXT_(setup, 2, "doL2%s", CARD_BUS_ID(card)); | |
561 | ||
562 | rc = qeth_query_setadapterparms(card); | |
563 | if (rc) { | |
564 | PRINT_WARN("could not query adapter parameters on device %s: " | |
565 | "x%x\n", CARD_BUS_ID(card), rc); | |
566 | } | |
567 | ||
568 | if (card->info.guestlan) { | |
569 | rc = qeth_setadpparms_change_macaddr(card); | |
570 | if (rc) { | |
571 | PRINT_WARN("couldn't get MAC address on " | |
572 | "device %s: x%x\n", | |
573 | CARD_BUS_ID(card), rc); | |
574 | QETH_DBF_TEXT_(setup, 2, "1err%d", rc); | |
575 | return rc; | |
576 | } | |
577 | QETH_DBF_HEX(setup, 2, card->dev->dev_addr, OSA_ADDR_LEN); | |
578 | } else { | |
579 | random_ether_addr(card->dev->dev_addr); | |
580 | memcpy(card->dev->dev_addr, vendor_pre, 3); | |
581 | } | |
582 | return 0; | |
583 | } | |
584 | ||
585 | static int qeth_l2_set_mac_address(struct net_device *dev, void *p) | |
586 | { | |
587 | struct sockaddr *addr = p; | |
588 | struct qeth_card *card = netdev_priv(dev); | |
589 | int rc = 0; | |
590 | ||
591 | QETH_DBF_TEXT(trace, 3, "setmac"); | |
592 | ||
593 | if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { | |
594 | QETH_DBF_TEXT(trace, 3, "setmcINV"); | |
595 | return -EOPNOTSUPP; | |
596 | } | |
597 | ||
598 | if (card->info.type == QETH_CARD_TYPE_OSN) { | |
599 | PRINT_WARN("Setting MAC address on %s is not supported.\n", | |
600 | dev->name); | |
601 | QETH_DBF_TEXT(trace, 3, "setmcOSN"); | |
602 | return -EOPNOTSUPP; | |
603 | } | |
604 | QETH_DBF_TEXT_(trace, 3, "%s", CARD_BUS_ID(card)); | |
605 | QETH_DBF_HEX(trace, 3, addr->sa_data, OSA_ADDR_LEN); | |
606 | rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); | |
607 | if (!rc) | |
608 | rc = qeth_l2_send_setmac(card, addr->sa_data); | |
609 | return rc; | |
610 | } | |
611 | ||
612 | static void qeth_l2_set_multicast_list(struct net_device *dev) | |
613 | { | |
614 | struct qeth_card *card = netdev_priv(dev); | |
615 | struct dev_mc_list *dm; | |
616 | ||
617 | if (card->info.type == QETH_CARD_TYPE_OSN) | |
618 | return ; | |
619 | ||
620 | QETH_DBF_TEXT(trace, 3, "setmulti"); | |
621 | qeth_l2_del_all_mc(card); | |
622 | spin_lock_bh(&card->mclock); | |
623 | for (dm = dev->mc_list; dm; dm = dm->next) | |
624 | qeth_l2_add_mc(card, dm->dmi_addr); | |
625 | spin_unlock_bh(&card->mclock); | |
626 | if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) | |
627 | return; | |
628 | qeth_setadp_promisc_mode(card); | |
629 | } | |
630 | ||
631 | static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
632 | { | |
633 | int rc; | |
634 | struct qeth_hdr *hdr = NULL; | |
635 | int elements = 0; | |
636 | struct qeth_card *card = netdev_priv(dev); | |
637 | struct sk_buff *new_skb = skb; | |
638 | int ipv = qeth_get_ip_version(skb); | |
639 | int cast_type = qeth_get_cast_type(card, skb); | |
640 | struct qeth_qdio_out_q *queue = card->qdio.out_qs | |
641 | [qeth_get_priority_queue(card, skb, ipv, cast_type)]; | |
642 | int tx_bytes = skb->len; | |
643 | enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO; | |
644 | struct qeth_eddp_context *ctx = NULL; | |
645 | ||
646 | QETH_DBF_TEXT(trace, 6, "l2xmit"); | |
647 | ||
648 | if ((card->state != CARD_STATE_UP) || !card->lan_online) { | |
649 | card->stats.tx_carrier_errors++; | |
650 | goto tx_drop; | |
651 | } | |
652 | ||
653 | if ((card->info.type == QETH_CARD_TYPE_OSN) && | |
654 | (skb->protocol == htons(ETH_P_IPV6))) | |
655 | goto tx_drop; | |
656 | ||
657 | if (card->options.performance_stats) { | |
658 | card->perf_stats.outbound_cnt++; | |
659 | card->perf_stats.outbound_start_time = qeth_get_micros(); | |
660 | } | |
661 | netif_stop_queue(dev); | |
662 | ||
663 | if (skb_is_gso(skb)) | |
664 | large_send = QETH_LARGE_SEND_EDDP; | |
665 | ||
666 | if (card->info.type == QETH_CARD_TYPE_OSN) | |
667 | hdr = (struct qeth_hdr *)skb->data; | |
668 | else { | |
669 | new_skb = qeth_prepare_skb(card, skb, &hdr); | |
670 | if (!new_skb) | |
671 | goto tx_drop; | |
672 | qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type); | |
673 | } | |
674 | ||
675 | if (large_send == QETH_LARGE_SEND_EDDP) { | |
676 | ctx = qeth_eddp_create_context(card, new_skb, hdr, | |
677 | skb->sk->sk_protocol); | |
678 | if (ctx == NULL) { | |
679 | PRINT_WARN("could not create eddp context\n"); | |
680 | goto tx_drop; | |
681 | } | |
682 | } else { | |
683 | elements = qeth_get_elements_no(card, (void *)hdr, new_skb, 0); | |
684 | if (!elements) | |
685 | goto tx_drop; | |
686 | } | |
687 | ||
688 | if ((large_send == QETH_LARGE_SEND_NO) && | |
689 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
690 | qeth_tx_csum(new_skb); | |
691 | ||
692 | if (card->info.type != QETH_CARD_TYPE_IQD) | |
693 | rc = qeth_do_send_packet(card, queue, new_skb, hdr, | |
694 | elements, ctx); | |
695 | else | |
696 | rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, | |
697 | elements, ctx); | |
698 | if (!rc) { | |
699 | card->stats.tx_packets++; | |
700 | card->stats.tx_bytes += tx_bytes; | |
701 | if (new_skb != skb) | |
702 | dev_kfree_skb_any(skb); | |
703 | if (card->options.performance_stats) { | |
704 | if (large_send != QETH_LARGE_SEND_NO) { | |
705 | card->perf_stats.large_send_bytes += tx_bytes; | |
706 | card->perf_stats.large_send_cnt++; | |
707 | } | |
708 | if (skb_shinfo(new_skb)->nr_frags > 0) { | |
709 | card->perf_stats.sg_skbs_sent++; | |
710 | /* nr_frags + skb->data */ | |
711 | card->perf_stats.sg_frags_sent += | |
712 | skb_shinfo(new_skb)->nr_frags + 1; | |
713 | } | |
714 | } | |
715 | ||
716 | if (ctx != NULL) { | |
717 | qeth_eddp_put_context(ctx); | |
718 | dev_kfree_skb_any(new_skb); | |
719 | } | |
720 | } else { | |
721 | if (ctx != NULL) | |
722 | qeth_eddp_put_context(ctx); | |
723 | ||
724 | if (rc == -EBUSY) { | |
725 | if (new_skb != skb) | |
726 | dev_kfree_skb_any(new_skb); | |
727 | return NETDEV_TX_BUSY; | |
728 | } else | |
729 | goto tx_drop; | |
730 | } | |
731 | ||
732 | netif_wake_queue(dev); | |
733 | if (card->options.performance_stats) | |
734 | card->perf_stats.outbound_time += qeth_get_micros() - | |
735 | card->perf_stats.outbound_start_time; | |
736 | return rc; | |
737 | ||
738 | tx_drop: | |
739 | card->stats.tx_dropped++; | |
740 | card->stats.tx_errors++; | |
741 | if ((new_skb != skb) && new_skb) | |
742 | dev_kfree_skb_any(new_skb); | |
743 | dev_kfree_skb_any(skb); | |
744 | return NETDEV_TX_OK; | |
745 | } | |
746 | ||
747 | static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev, | |
748 | unsigned int status, unsigned int qdio_err, | |
749 | unsigned int siga_err, unsigned int queue, | |
750 | int first_element, int count, unsigned long card_ptr) | |
751 | { | |
752 | struct net_device *net_dev; | |
753 | struct qeth_card *card; | |
754 | struct qeth_qdio_buffer *buffer; | |
755 | int index; | |
756 | int i; | |
757 | ||
758 | QETH_DBF_TEXT(trace, 6, "qdinput"); | |
759 | card = (struct qeth_card *) card_ptr; | |
760 | net_dev = card->dev; | |
761 | if (card->options.performance_stats) { | |
762 | card->perf_stats.inbound_cnt++; | |
763 | card->perf_stats.inbound_start_time = qeth_get_micros(); | |
764 | } | |
765 | if (status & QDIO_STATUS_LOOK_FOR_ERROR) { | |
766 | if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) { | |
767 | QETH_DBF_TEXT(trace, 1, "qdinchk"); | |
768 | QETH_DBF_TEXT_(trace, 1, "%s", CARD_BUS_ID(card)); | |
769 | QETH_DBF_TEXT_(trace, 1, "%04X%04X", first_element, | |
770 | count); | |
771 | QETH_DBF_TEXT_(trace, 1, "%04X%04X", queue, status); | |
772 | qeth_schedule_recovery(card); | |
773 | return; | |
774 | } | |
775 | } | |
776 | for (i = first_element; i < (first_element + count); ++i) { | |
777 | index = i % QDIO_MAX_BUFFERS_PER_Q; | |
778 | buffer = &card->qdio.in_q->bufs[index]; | |
779 | if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) && | |
780 | qeth_check_qdio_errors(buffer->buffer, | |
781 | qdio_err, siga_err, "qinerr"))) | |
782 | qeth_l2_process_inbound_buffer(card, buffer, index); | |
783 | /* clear buffer and give back to hardware */ | |
784 | qeth_put_buffer_pool_entry(card, buffer->pool_entry); | |
785 | qeth_queue_input_buffer(card, index); | |
786 | } | |
787 | if (card->options.performance_stats) | |
788 | card->perf_stats.inbound_time += qeth_get_micros() - | |
789 | card->perf_stats.inbound_start_time; | |
790 | } | |
791 | ||
792 | static int qeth_l2_open(struct net_device *dev) | |
793 | { | |
794 | struct qeth_card *card = netdev_priv(dev); | |
795 | ||
796 | QETH_DBF_TEXT(trace, 4, "qethopen"); | |
797 | if (card->state != CARD_STATE_SOFTSETUP) | |
798 | return -ENODEV; | |
799 | ||
800 | if ((card->info.type != QETH_CARD_TYPE_OSN) && | |
801 | (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { | |
802 | QETH_DBF_TEXT(trace, 4, "nomacadr"); | |
803 | return -EPERM; | |
804 | } | |
805 | card->data.state = CH_STATE_UP; | |
806 | card->state = CARD_STATE_UP; | |
807 | card->dev->flags |= IFF_UP; | |
808 | netif_start_queue(dev); | |
809 | ||
810 | if (!card->lan_online && netif_carrier_ok(dev)) | |
811 | netif_carrier_off(dev); | |
812 | return 0; | |
813 | } | |
814 | ||
815 | ||
816 | static int qeth_l2_stop(struct net_device *dev) | |
817 | { | |
818 | struct qeth_card *card = netdev_priv(dev); | |
819 | ||
820 | QETH_DBF_TEXT(trace, 4, "qethstop"); | |
821 | netif_tx_disable(dev); | |
822 | card->dev->flags &= ~IFF_UP; | |
823 | if (card->state == CARD_STATE_UP) | |
824 | card->state = CARD_STATE_SOFTSETUP; | |
825 | return 0; | |
826 | } | |
827 | ||
828 | static int qeth_l2_probe_device(struct ccwgroup_device *gdev) | |
829 | { | |
830 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
831 | ||
832 | INIT_LIST_HEAD(&card->vid_list); | |
833 | INIT_LIST_HEAD(&card->mc_list); | |
834 | card->options.layer2 = 1; | |
835 | card->discipline.input_handler = (qdio_handler_t *) | |
836 | qeth_l2_qdio_input_handler; | |
837 | card->discipline.output_handler = (qdio_handler_t *) | |
838 | qeth_qdio_output_handler; | |
839 | card->discipline.recover = qeth_l2_recover; | |
840 | return 0; | |
841 | } | |
842 | ||
843 | static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) | |
844 | { | |
845 | struct qeth_card *card = dev_get_drvdata(&cgdev->dev); | |
846 | ||
847 | wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); | |
848 | ||
849 | if (cgdev->state == CCWGROUP_ONLINE) { | |
850 | card->use_hard_stop = 1; | |
851 | qeth_l2_set_offline(cgdev); | |
852 | } | |
853 | ||
854 | if (card->dev) { | |
855 | unregister_netdev(card->dev); | |
856 | card->dev = NULL; | |
857 | } | |
858 | ||
859 | qeth_l2_del_all_mc(card); | |
860 | return; | |
861 | } | |
862 | ||
863 | static struct ethtool_ops qeth_l2_ethtool_ops = { | |
864 | .get_link = ethtool_op_get_link, | |
865 | .get_tx_csum = ethtool_op_get_tx_csum, | |
866 | .set_tx_csum = ethtool_op_set_tx_hw_csum, | |
867 | .get_sg = ethtool_op_get_sg, | |
868 | .set_sg = ethtool_op_set_sg, | |
869 | .get_tso = ethtool_op_get_tso, | |
870 | .set_tso = ethtool_op_set_tso, | |
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, | |
875 | }; | |
876 | ||
877 | static struct ethtool_ops qeth_l2_osn_ops = { | |
878 | .get_strings = qeth_core_get_strings, | |
879 | .get_ethtool_stats = qeth_core_get_ethtool_stats, | |
880 | .get_stats_count = qeth_core_get_stats_count, | |
881 | .get_drvinfo = qeth_core_get_drvinfo, | |
882 | }; | |
883 | ||
884 | static int qeth_l2_setup_netdev(struct qeth_card *card) | |
885 | { | |
886 | switch (card->info.type) { | |
887 | case QETH_CARD_TYPE_OSAE: | |
888 | card->dev = alloc_etherdev(0); | |
889 | break; | |
890 | case QETH_CARD_TYPE_IQD: | |
891 | card->dev = alloc_netdev(0, "hsi%d", ether_setup); | |
892 | break; | |
893 | case QETH_CARD_TYPE_OSN: | |
894 | card->dev = alloc_netdev(0, "osn%d", ether_setup); | |
895 | card->dev->flags |= IFF_NOARP; | |
896 | break; | |
897 | default: | |
898 | card->dev = alloc_etherdev(0); | |
899 | } | |
900 | ||
901 | if (!card->dev) | |
902 | return -ENODEV; | |
903 | ||
904 | card->dev->priv = card; | |
905 | card->dev->tx_timeout = &qeth_tx_timeout; | |
906 | card->dev->watchdog_timeo = QETH_TX_TIMEOUT; | |
907 | card->dev->open = qeth_l2_open; | |
908 | card->dev->stop = qeth_l2_stop; | |
909 | card->dev->hard_start_xmit = qeth_l2_hard_start_xmit; | |
910 | card->dev->do_ioctl = qeth_l2_do_ioctl; | |
911 | card->dev->get_stats = qeth_get_stats; | |
912 | card->dev->change_mtu = qeth_change_mtu; | |
913 | card->dev->set_multicast_list = qeth_l2_set_multicast_list; | |
914 | card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid; | |
915 | card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid; | |
916 | card->dev->set_mac_address = qeth_l2_set_mac_address; | |
917 | card->dev->mtu = card->info.initial_mtu; | |
918 | if (card->info.type != QETH_CARD_TYPE_OSN) | |
919 | SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops); | |
920 | else | |
921 | SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops); | |
922 | card->dev->features |= NETIF_F_HW_VLAN_FILTER; | |
923 | card->info.broadcast_capable = 1; | |
924 | qeth_l2_request_initial_mac(card); | |
925 | SET_NETDEV_DEV(card->dev, &card->gdev->dev); | |
926 | return register_netdev(card->dev); | |
927 | } | |
928 | ||
929 | static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) | |
930 | { | |
931 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
932 | int rc = 0; | |
933 | enum qeth_card_states recover_flag; | |
934 | ||
935 | BUG_ON(!card); | |
936 | QETH_DBF_TEXT(setup, 2, "setonlin"); | |
937 | QETH_DBF_HEX(setup, 2, &card, sizeof(void *)); | |
938 | ||
939 | qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1); | |
940 | if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) { | |
941 | PRINT_WARN("set_online of card %s interrupted by user!\n", | |
942 | CARD_BUS_ID(card)); | |
943 | return -ERESTARTSYS; | |
944 | } | |
945 | ||
946 | recover_flag = card->state; | |
947 | rc = ccw_device_set_online(CARD_RDEV(card)); | |
948 | if (rc) { | |
949 | QETH_DBF_TEXT_(setup, 2, "1err%d", rc); | |
950 | return -EIO; | |
951 | } | |
952 | rc = ccw_device_set_online(CARD_WDEV(card)); | |
953 | if (rc) { | |
954 | QETH_DBF_TEXT_(setup, 2, "1err%d", rc); | |
955 | return -EIO; | |
956 | } | |
957 | rc = ccw_device_set_online(CARD_DDEV(card)); | |
958 | if (rc) { | |
959 | QETH_DBF_TEXT_(setup, 2, "1err%d", rc); | |
960 | return -EIO; | |
961 | } | |
962 | ||
963 | rc = qeth_core_hardsetup_card(card); | |
964 | if (rc) { | |
965 | QETH_DBF_TEXT_(setup, 2, "2err%d", rc); | |
966 | goto out_remove; | |
967 | } | |
968 | ||
969 | if (!card->dev && qeth_l2_setup_netdev(card)) | |
970 | goto out_remove; | |
971 | ||
972 | if (card->info.type != QETH_CARD_TYPE_OSN) | |
973 | qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); | |
974 | ||
975 | card->state = CARD_STATE_HARDSETUP; | |
976 | qeth_print_status_message(card); | |
977 | ||
978 | /* softsetup */ | |
979 | QETH_DBF_TEXT(setup, 2, "softsetp"); | |
980 | ||
981 | rc = qeth_send_startlan(card); | |
982 | if (rc) { | |
983 | QETH_DBF_TEXT_(setup, 2, "1err%d", rc); | |
984 | if (rc == 0xe080) { | |
985 | PRINT_WARN("LAN on card %s if offline! " | |
986 | "Waiting for STARTLAN from card.\n", | |
987 | CARD_BUS_ID(card)); | |
988 | card->lan_online = 0; | |
989 | } | |
990 | return rc; | |
991 | } else | |
992 | card->lan_online = 1; | |
993 | ||
994 | if (card->info.type != QETH_CARD_TYPE_OSN) { | |
995 | qeth_set_large_send(card, card->options.large_send); | |
996 | qeth_l2_process_vlans(card, 0); | |
997 | } | |
998 | ||
999 | netif_tx_disable(card->dev); | |
1000 | ||
1001 | rc = qeth_init_qdio_queues(card); | |
1002 | if (rc) { | |
1003 | QETH_DBF_TEXT_(setup, 2, "6err%d", rc); | |
1004 | goto out_remove; | |
1005 | } | |
1006 | card->state = CARD_STATE_SOFTSETUP; | |
1007 | netif_carrier_on(card->dev); | |
1008 | ||
1009 | qeth_set_allowed_threads(card, 0xffffffff, 0); | |
1010 | if (recover_flag == CARD_STATE_RECOVER) { | |
1011 | if (recovery_mode && | |
1012 | card->info.type != QETH_CARD_TYPE_OSN) { | |
1013 | qeth_l2_open(card->dev); | |
1014 | } else { | |
1015 | rtnl_lock(); | |
1016 | dev_open(card->dev); | |
1017 | rtnl_unlock(); | |
1018 | } | |
1019 | /* this also sets saved unicast addresses */ | |
1020 | qeth_l2_set_multicast_list(card->dev); | |
1021 | } | |
1022 | /* let user_space know that device is online */ | |
1023 | kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); | |
1024 | return 0; | |
1025 | out_remove: | |
1026 | card->use_hard_stop = 1; | |
1027 | qeth_l2_stop_card(card, 0); | |
1028 | ccw_device_set_offline(CARD_DDEV(card)); | |
1029 | ccw_device_set_offline(CARD_WDEV(card)); | |
1030 | ccw_device_set_offline(CARD_RDEV(card)); | |
1031 | if (recover_flag == CARD_STATE_RECOVER) | |
1032 | card->state = CARD_STATE_RECOVER; | |
1033 | else | |
1034 | card->state = CARD_STATE_DOWN; | |
1035 | return -ENODEV; | |
1036 | } | |
1037 | ||
1038 | static int qeth_l2_set_online(struct ccwgroup_device *gdev) | |
1039 | { | |
1040 | return __qeth_l2_set_online(gdev, 0); | |
1041 | } | |
1042 | ||
1043 | static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, | |
1044 | int recovery_mode) | |
1045 | { | |
1046 | struct qeth_card *card = dev_get_drvdata(&cgdev->dev); | |
1047 | int rc = 0, rc2 = 0, rc3 = 0; | |
1048 | enum qeth_card_states recover_flag; | |
1049 | ||
1050 | QETH_DBF_TEXT(setup, 3, "setoffl"); | |
1051 | QETH_DBF_HEX(setup, 3, &card, sizeof(void *)); | |
1052 | ||
1053 | if (card->dev && netif_carrier_ok(card->dev)) | |
1054 | netif_carrier_off(card->dev); | |
1055 | recover_flag = card->state; | |
1056 | if (qeth_l2_stop_card(card, recovery_mode) == -ERESTARTSYS) { | |
1057 | PRINT_WARN("Stopping card %s interrupted by user!\n", | |
1058 | CARD_BUS_ID(card)); | |
1059 | return -ERESTARTSYS; | |
1060 | } | |
1061 | rc = ccw_device_set_offline(CARD_DDEV(card)); | |
1062 | rc2 = ccw_device_set_offline(CARD_WDEV(card)); | |
1063 | rc3 = ccw_device_set_offline(CARD_RDEV(card)); | |
1064 | if (!rc) | |
1065 | rc = (rc2) ? rc2 : rc3; | |
1066 | if (rc) | |
1067 | QETH_DBF_TEXT_(setup, 2, "1err%d", rc); | |
1068 | if (recover_flag == CARD_STATE_UP) | |
1069 | card->state = CARD_STATE_RECOVER; | |
1070 | /* let user_space know that device is offline */ | |
1071 | kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); | |
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) | |
1076 | { | |
1077 | return __qeth_l2_set_offline(cgdev, 0); | |
1078 | } | |
1079 | ||
1080 | static int qeth_l2_recover(void *ptr) | |
1081 | { | |
1082 | struct qeth_card *card; | |
1083 | int rc = 0; | |
1084 | ||
1085 | card = (struct qeth_card *) ptr; | |
1086 | QETH_DBF_TEXT(trace, 2, "recover1"); | |
1087 | QETH_DBF_HEX(trace, 2, &card, sizeof(void *)); | |
1088 | if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) | |
1089 | return 0; | |
1090 | QETH_DBF_TEXT(trace, 2, "recover2"); | |
1091 | PRINT_WARN("Recovery of device %s started ...\n", | |
1092 | CARD_BUS_ID(card)); | |
1093 | card->use_hard_stop = 1; | |
1094 | __qeth_l2_set_offline(card->gdev, 1); | |
1095 | rc = __qeth_l2_set_online(card->gdev, 1); | |
1096 | /* don't run another scheduled recovery */ | |
1097 | qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); | |
1098 | qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); | |
1099 | if (!rc) | |
1100 | PRINT_INFO("Device %s successfully recovered!\n", | |
1101 | CARD_BUS_ID(card)); | |
1102 | else | |
1103 | PRINT_INFO("Device %s could not be recovered!\n", | |
1104 | CARD_BUS_ID(card)); | |
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | static int __init qeth_l2_init(void) | |
1109 | { | |
1110 | PRINT_INFO("register layer 2 discipline\n"); | |
1111 | return 0; | |
1112 | } | |
1113 | ||
1114 | static void __exit qeth_l2_exit(void) | |
1115 | { | |
1116 | PRINT_INFO("unregister layer 2 discipline\n"); | |
1117 | } | |
1118 | ||
1119 | static void qeth_l2_shutdown(struct ccwgroup_device *gdev) | |
1120 | { | |
1121 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
1122 | qeth_qdio_clear_card(card, 0); | |
1123 | qeth_clear_qdio_buffers(card); | |
1124 | } | |
1125 | ||
1126 | struct ccwgroup_driver qeth_l2_ccwgroup_driver = { | |
1127 | .probe = qeth_l2_probe_device, | |
1128 | .remove = qeth_l2_remove_device, | |
1129 | .set_online = qeth_l2_set_online, | |
1130 | .set_offline = qeth_l2_set_offline, | |
1131 | .shutdown = qeth_l2_shutdown, | |
1132 | }; | |
1133 | EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver); | |
1134 | ||
1135 | static int qeth_osn_send_control_data(struct qeth_card *card, int len, | |
1136 | struct qeth_cmd_buffer *iob) | |
1137 | { | |
1138 | unsigned long flags; | |
1139 | int rc = 0; | |
1140 | ||
1141 | QETH_DBF_TEXT(trace, 5, "osndctrd"); | |
1142 | ||
1143 | wait_event(card->wait_q, | |
1144 | atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); | |
1145 | qeth_prepare_control_data(card, len, iob); | |
1146 | QETH_DBF_TEXT(trace, 6, "osnoirqp"); | |
1147 | spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); | |
1148 | rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, | |
1149 | (addr_t) iob, 0, 0); | |
1150 | spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); | |
1151 | if (rc) { | |
1152 | PRINT_WARN("qeth_osn_send_control_data: " | |
1153 | "ccw_device_start rc = %i\n", rc); | |
1154 | QETH_DBF_TEXT_(trace, 2, " err%d", rc); | |
1155 | qeth_release_buffer(iob->channel, iob); | |
1156 | atomic_set(&card->write.irq_pending, 0); | |
1157 | wake_up(&card->wait_q); | |
1158 | } | |
1159 | return rc; | |
1160 | } | |
1161 | ||
1162 | static int qeth_osn_send_ipa_cmd(struct qeth_card *card, | |
1163 | struct qeth_cmd_buffer *iob, int data_len) | |
1164 | { | |
1165 | u16 s1, s2; | |
1166 | ||
1167 | QETH_DBF_TEXT(trace, 4, "osndipa"); | |
1168 | ||
1169 | qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); | |
1170 | s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); | |
1171 | s2 = (u16)data_len; | |
1172 | memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); | |
1173 | memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); | |
1174 | memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); | |
1175 | memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); | |
1176 | return qeth_osn_send_control_data(card, s1, iob); | |
1177 | } | |
1178 | ||
1179 | int qeth_osn_assist(struct net_device *dev, void *data, int data_len) | |
1180 | { | |
1181 | struct qeth_cmd_buffer *iob; | |
1182 | struct qeth_card *card; | |
1183 | int rc; | |
1184 | ||
1185 | QETH_DBF_TEXT(trace, 2, "osnsdmc"); | |
1186 | if (!dev) | |
1187 | return -ENODEV; | |
1188 | card = netdev_priv(dev); | |
1189 | if (!card) | |
1190 | return -ENODEV; | |
1191 | if ((card->state != CARD_STATE_UP) && | |
1192 | (card->state != CARD_STATE_SOFTSETUP)) | |
1193 | return -ENODEV; | |
1194 | iob = qeth_wait_for_buffer(&card->write); | |
1195 | memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); | |
1196 | rc = qeth_osn_send_ipa_cmd(card, iob, data_len); | |
1197 | return rc; | |
1198 | } | |
1199 | EXPORT_SYMBOL(qeth_osn_assist); | |
1200 | ||
1201 | int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, | |
1202 | int (*assist_cb)(struct net_device *, void *), | |
1203 | int (*data_cb)(struct sk_buff *)) | |
1204 | { | |
1205 | struct qeth_card *card; | |
1206 | ||
1207 | QETH_DBF_TEXT(trace, 2, "osnreg"); | |
1208 | *dev = qeth_l2_netdev_by_devno(read_dev_no); | |
1209 | if (*dev == NULL) | |
1210 | return -ENODEV; | |
1211 | card = netdev_priv(*dev); | |
1212 | if (!card) | |
1213 | return -ENODEV; | |
1214 | if ((assist_cb == NULL) || (data_cb == NULL)) | |
1215 | return -EINVAL; | |
1216 | card->osn_info.assist_cb = assist_cb; | |
1217 | card->osn_info.data_cb = data_cb; | |
1218 | return 0; | |
1219 | } | |
1220 | EXPORT_SYMBOL(qeth_osn_register); | |
1221 | ||
1222 | void qeth_osn_deregister(struct net_device *dev) | |
1223 | { | |
1224 | struct qeth_card *card; | |
1225 | ||
1226 | QETH_DBF_TEXT(trace, 2, "osndereg"); | |
1227 | if (!dev) | |
1228 | return; | |
1229 | card = netdev_priv(dev); | |
1230 | if (!card) | |
1231 | return; | |
1232 | card->osn_info.assist_cb = NULL; | |
1233 | card->osn_info.data_cb = NULL; | |
1234 | return; | |
1235 | } | |
1236 | EXPORT_SYMBOL(qeth_osn_deregister); | |
1237 | ||
1238 | module_init(qeth_l2_init); | |
1239 | module_exit(qeth_l2_exit); | |
1240 | MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); | |
1241 | MODULE_DESCRIPTION("qeth layer 2 discipline"); | |
1242 | MODULE_LICENSE("GPL"); |