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[PATCH] s390: qeth driver fixes [3/6]
[mirror_ubuntu-zesty-kernel.git] / drivers / s390 / net / qeth.h
1 #ifndef __QETH_H__
2 #define __QETH_H__
3
4 #include <linux/if.h>
5 #include <linux/if_arp.h>
6
7 #include <linux/if_tr.h>
8 #include <linux/trdevice.h>
9 #include <linux/etherdevice.h>
10 #include <linux/if_vlan.h>
11 #include <linux/ctype.h>
12
13 #include <net/ipv6.h>
14 #include <linux/in6.h>
15 #include <net/if_inet6.h>
16 #include <net/addrconf.h>
17
18
19 #include <linux/bitops.h>
20
21 #include <asm/debug.h>
22 #include <asm/qdio.h>
23 #include <asm/ccwdev.h>
24 #include <asm/ccwgroup.h>
25
26 #include "qeth_mpc.h"
27
28 #ifdef CONFIG_QETH_IPV6
29 #define QETH_VERSION_IPV6 ":IPv6"
30 #else
31 #define QETH_VERSION_IPV6 ""
32 #endif
33 #ifdef CONFIG_QETH_VLAN
34 #define QETH_VERSION_VLAN ":VLAN"
35 #else
36 #define QETH_VERSION_VLAN ""
37 #endif
38
39 /**
40 * Debug Facility stuff
41 */
42 #define QETH_DBF_SETUP_NAME "qeth_setup"
43 #define QETH_DBF_SETUP_LEN 8
44 #define QETH_DBF_SETUP_PAGES 8
45 #define QETH_DBF_SETUP_NR_AREAS 1
46 #define QETH_DBF_SETUP_LEVEL 5
47
48 #define QETH_DBF_MISC_NAME "qeth_misc"
49 #define QETH_DBF_MISC_LEN 128
50 #define QETH_DBF_MISC_PAGES 2
51 #define QETH_DBF_MISC_NR_AREAS 1
52 #define QETH_DBF_MISC_LEVEL 2
53
54 #define QETH_DBF_DATA_NAME "qeth_data"
55 #define QETH_DBF_DATA_LEN 96
56 #define QETH_DBF_DATA_PAGES 8
57 #define QETH_DBF_DATA_NR_AREAS 1
58 #define QETH_DBF_DATA_LEVEL 2
59
60 #define QETH_DBF_CONTROL_NAME "qeth_control"
61 #define QETH_DBF_CONTROL_LEN 256
62 #define QETH_DBF_CONTROL_PAGES 8
63 #define QETH_DBF_CONTROL_NR_AREAS 2
64 #define QETH_DBF_CONTROL_LEVEL 5
65
66 #define QETH_DBF_TRACE_NAME "qeth_trace"
67 #define QETH_DBF_TRACE_LEN 8
68 #define QETH_DBF_TRACE_PAGES 4
69 #define QETH_DBF_TRACE_NR_AREAS 2
70 #define QETH_DBF_TRACE_LEVEL 3
71 extern debug_info_t *qeth_dbf_trace;
72
73 #define QETH_DBF_SENSE_NAME "qeth_sense"
74 #define QETH_DBF_SENSE_LEN 64
75 #define QETH_DBF_SENSE_PAGES 2
76 #define QETH_DBF_SENSE_NR_AREAS 1
77 #define QETH_DBF_SENSE_LEVEL 2
78
79 #define QETH_DBF_QERR_NAME "qeth_qerr"
80 #define QETH_DBF_QERR_LEN 8
81 #define QETH_DBF_QERR_PAGES 2
82 #define QETH_DBF_QERR_NR_AREAS 2
83 #define QETH_DBF_QERR_LEVEL 2
84
85 #define QETH_DBF_TEXT(name,level,text) \
86 do { \
87 debug_text_event(qeth_dbf_##name,level,text); \
88 } while (0)
89
90 #define QETH_DBF_HEX(name,level,addr,len) \
91 do { \
92 debug_event(qeth_dbf_##name,level,(void*)(addr),len); \
93 } while (0)
94
95 DECLARE_PER_CPU(char[256], qeth_dbf_txt_buf);
96
97 #define QETH_DBF_TEXT_(name,level,text...) \
98 do { \
99 char* dbf_txt_buf = get_cpu_var(qeth_dbf_txt_buf); \
100 sprintf(dbf_txt_buf, text); \
101 debug_text_event(qeth_dbf_##name,level,dbf_txt_buf); \
102 put_cpu_var(qeth_dbf_txt_buf); \
103 } while (0)
104
105 #define QETH_DBF_SPRINTF(name,level,text...) \
106 do { \
107 debug_sprintf_event(qeth_dbf_trace, level, ##text ); \
108 debug_sprintf_event(qeth_dbf_trace, level, text ); \
109 } while (0)
110
111 /**
112 * some more debug stuff
113 */
114 #define PRINTK_HEADER "qeth: "
115
116 #define HEXDUMP16(importance,header,ptr) \
117 PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
118 "%02x %02x %02x %02x %02x %02x %02x %02x\n", \
119 *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
120 *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
121 *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
122 *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
123 *(((char*)ptr)+12),*(((char*)ptr)+13), \
124 *(((char*)ptr)+14),*(((char*)ptr)+15)); \
125 PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
126 "%02x %02x %02x %02x %02x %02x %02x %02x\n", \
127 *(((char*)ptr)+16),*(((char*)ptr)+17), \
128 *(((char*)ptr)+18),*(((char*)ptr)+19), \
129 *(((char*)ptr)+20),*(((char*)ptr)+21), \
130 *(((char*)ptr)+22),*(((char*)ptr)+23), \
131 *(((char*)ptr)+24),*(((char*)ptr)+25), \
132 *(((char*)ptr)+26),*(((char*)ptr)+27), \
133 *(((char*)ptr)+28),*(((char*)ptr)+29), \
134 *(((char*)ptr)+30),*(((char*)ptr)+31));
135
136 static inline void
137 qeth_hex_dump(unsigned char *buf, size_t len)
138 {
139 size_t i;
140
141 for (i = 0; i < len; i++) {
142 if (i && !(i % 16))
143 printk("\n");
144 printk("%02x ", *(buf + i));
145 }
146 printk("\n");
147 }
148
149 #define SENSE_COMMAND_REJECT_BYTE 0
150 #define SENSE_COMMAND_REJECT_FLAG 0x80
151 #define SENSE_RESETTING_EVENT_BYTE 1
152 #define SENSE_RESETTING_EVENT_FLAG 0x80
153
154 #define atomic_swap(a,b) xchg((int *)a.counter, b)
155
156 /*
157 * Common IO related definitions
158 */
159 extern struct device *qeth_root_dev;
160 extern struct ccw_driver qeth_ccw_driver;
161 extern struct ccwgroup_driver qeth_ccwgroup_driver;
162
163 #define CARD_RDEV(card) card->read.ccwdev
164 #define CARD_WDEV(card) card->write.ccwdev
165 #define CARD_DDEV(card) card->data.ccwdev
166 #define CARD_BUS_ID(card) card->gdev->dev.bus_id
167 #define CARD_RDEV_ID(card) card->read.ccwdev->dev.bus_id
168 #define CARD_WDEV_ID(card) card->write.ccwdev->dev.bus_id
169 #define CARD_DDEV_ID(card) card->data.ccwdev->dev.bus_id
170 #define CHANNEL_ID(channel) channel->ccwdev->dev.bus_id
171
172 #define CARD_FROM_CDEV(cdev) (struct qeth_card *) \
173 ((struct ccwgroup_device *)cdev->dev.driver_data)\
174 ->dev.driver_data;
175
176 /**
177 * card stuff
178 */
179 #ifdef CONFIG_QETH_PERF_STATS
180 struct qeth_perf_stats {
181 unsigned int bufs_rec;
182 unsigned int bufs_sent;
183
184 unsigned int skbs_sent_pack;
185 unsigned int bufs_sent_pack;
186
187 unsigned int sc_dp_p;
188 unsigned int sc_p_dp;
189 /* qdio_input_handler: number of times called, time spent in */
190 __u64 inbound_start_time;
191 unsigned int inbound_cnt;
192 unsigned int inbound_time;
193 /* qeth_send_packet: number of times called, time spent in */
194 __u64 outbound_start_time;
195 unsigned int outbound_cnt;
196 unsigned int outbound_time;
197 /* qdio_output_handler: number of times called, time spent in */
198 __u64 outbound_handler_start_time;
199 unsigned int outbound_handler_cnt;
200 unsigned int outbound_handler_time;
201 /* number of calls to and time spent in do_QDIO for inbound queue */
202 __u64 inbound_do_qdio_start_time;
203 unsigned int inbound_do_qdio_cnt;
204 unsigned int inbound_do_qdio_time;
205 /* number of calls to and time spent in do_QDIO for outbound queues */
206 __u64 outbound_do_qdio_start_time;
207 unsigned int outbound_do_qdio_cnt;
208 unsigned int outbound_do_qdio_time;
209 /* eddp data */
210 unsigned int large_send_bytes;
211 unsigned int large_send_cnt;
212 unsigned int sg_skbs_sent;
213 unsigned int sg_frags_sent;
214 };
215 #endif /* CONFIG_QETH_PERF_STATS */
216
217 /* Routing stuff */
218 struct qeth_routing_info {
219 enum qeth_routing_types type;
220 };
221
222 /* IPA stuff */
223 struct qeth_ipa_info {
224 __u32 supported_funcs;
225 __u32 enabled_funcs;
226 };
227
228 static inline int
229 qeth_is_ipa_supported(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
230 {
231 return (ipa->supported_funcs & func);
232 }
233
234 static inline int
235 qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
236 {
237 return (ipa->supported_funcs & ipa->enabled_funcs & func);
238 }
239
240 #define qeth_adp_supported(c,f) \
241 qeth_is_ipa_supported(&c->options.adp, f)
242 #define qeth_adp_enabled(c,f) \
243 qeth_is_ipa_enabled(&c->options.adp, f)
244 #define qeth_is_supported(c,f) \
245 qeth_is_ipa_supported(&c->options.ipa4, f)
246 #define qeth_is_enabled(c,f) \
247 qeth_is_ipa_enabled(&c->options.ipa4, f)
248 #ifdef CONFIG_QETH_IPV6
249 #define qeth_is_supported6(c,f) \
250 qeth_is_ipa_supported(&c->options.ipa6, f)
251 #define qeth_is_enabled6(c,f) \
252 qeth_is_ipa_enabled(&c->options.ipa6, f)
253 #else /* CONFIG_QETH_IPV6 */
254 #define qeth_is_supported6(c,f) 0
255 #define qeth_is_enabled6(c,f) 0
256 #endif /* CONFIG_QETH_IPV6 */
257 #define qeth_is_ipafunc_supported(c,prot,f) \
258 (prot==QETH_PROT_IPV6)? qeth_is_supported6(c,f):qeth_is_supported(c,f)
259 #define qeth_is_ipafunc_enabled(c,prot,f) \
260 (prot==QETH_PROT_IPV6)? qeth_is_enabled6(c,f):qeth_is_enabled(c,f)
261
262
263 #define QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT 0x0101
264 #define QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT 0x0101
265 #define QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT 0x4108
266 #define QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT 0x5108
267
268 #define QETH_MODELLIST_ARRAY \
269 {{0x1731,0x01,0x1732,0x01,QETH_CARD_TYPE_OSAE,1, \
270 QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
271 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
272 QETH_MAX_QUEUES,0}, \
273 {0x1731,0x05,0x1732,0x05,QETH_CARD_TYPE_IQD,0, \
274 QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT, \
275 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT, \
276 QETH_MAX_QUEUES,0x103}, \
277 {0x1731,0x06,0x1732,0x06,QETH_CARD_TYPE_OSN,0, \
278 QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
279 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
280 QETH_MAX_QUEUES,0}, \
281 {0,0,0,0,0,0,0,0,0}}
282
283 #define QETH_REAL_CARD 1
284 #define QETH_VLAN_CARD 2
285 #define QETH_BUFSIZE 4096
286
287 /**
288 * some more defs
289 */
290 #define IF_NAME_LEN 16
291 #define QETH_TX_TIMEOUT 100 * HZ
292 #define QETH_HEADER_SIZE 32
293 #define MAX_PORTNO 15
294 #define QETH_FAKE_LL_LEN_ETH ETH_HLEN
295 #define QETH_FAKE_LL_LEN_TR (sizeof(struct trh_hdr)-TR_MAXRIFLEN+sizeof(struct trllc))
296 #define QETH_FAKE_LL_V6_ADDR_POS 24
297
298 /*IPv6 address autoconfiguration stuff*/
299 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
300 #define UNIQUE_ID_NOT_BY_CARD 0x10000
301
302 /*****************************************************************************/
303 /* QDIO queue and buffer handling */
304 /*****************************************************************************/
305 #define QETH_MAX_QUEUES 4
306 #define QETH_IN_BUF_SIZE_DEFAULT 65536
307 #define QETH_IN_BUF_COUNT_DEFAULT 16
308 #define QETH_IN_BUF_COUNT_MIN 8
309 #define QETH_IN_BUF_COUNT_MAX 128
310 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
311 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
312 ((card)->qdio.in_buf_pool.buf_count / 2)
313
314 /* buffers we have to be behind before we get a PCI */
315 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
316 /*enqueued free buffers left before we get a PCI*/
317 #define QETH_PCI_THRESHOLD_B(card) 0
318 /*not used unless the microcode gets patched*/
319 #define QETH_PCI_TIMER_VALUE(card) 3
320
321 #define QETH_MIN_INPUT_THRESHOLD 1
322 #define QETH_MAX_INPUT_THRESHOLD 500
323 #define QETH_MIN_OUTPUT_THRESHOLD 1
324 #define QETH_MAX_OUTPUT_THRESHOLD 300
325
326 /* priority queing */
327 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
328 #define QETH_DEFAULT_QUEUE 2
329 #define QETH_NO_PRIO_QUEUEING 0
330 #define QETH_PRIO_Q_ING_PREC 1
331 #define QETH_PRIO_Q_ING_TOS 2
332 #define IP_TOS_LOWDELAY 0x10
333 #define IP_TOS_HIGHTHROUGHPUT 0x08
334 #define IP_TOS_HIGHRELIABILITY 0x04
335 #define IP_TOS_NOTIMPORTANT 0x02
336
337 /* Packing */
338 #define QETH_LOW_WATERMARK_PACK 2
339 #define QETH_HIGH_WATERMARK_PACK 5
340 #define QETH_WATERMARK_PACK_FUZZ 1
341
342 #define QETH_IP_HEADER_SIZE 40
343
344 struct qeth_hdr_layer3 {
345 __u8 id;
346 __u8 flags;
347 __u16 inbound_checksum; /*TSO:__u16 seqno */
348 __u32 token; /*TSO: __u32 reserved */
349 __u16 length;
350 __u8 vlan_prio;
351 __u8 ext_flags;
352 __u16 vlan_id;
353 __u16 frame_offset;
354 __u8 dest_addr[16];
355 } __attribute__ ((packed));
356
357 struct qeth_hdr_layer2 {
358 __u8 id;
359 __u8 flags[3];
360 __u8 port_no;
361 __u8 hdr_length;
362 __u16 pkt_length;
363 __u16 seq_no;
364 __u16 vlan_id;
365 __u32 reserved;
366 __u8 reserved2[16];
367 } __attribute__ ((packed));
368
369 struct qeth_hdr_osn {
370 __u8 id;
371 __u8 reserved;
372 __u16 seq_no;
373 __u16 reserved2;
374 __u16 control_flags;
375 __u16 pdu_length;
376 __u8 reserved3[18];
377 __u32 ccid;
378 } __attribute__ ((packed));
379
380 struct qeth_hdr {
381 union {
382 struct qeth_hdr_layer2 l2;
383 struct qeth_hdr_layer3 l3;
384 struct qeth_hdr_osn osn;
385 } hdr;
386 } __attribute__ ((packed));
387
388 /*TCP Segmentation Offload header*/
389 struct qeth_hdr_ext_tso {
390 __u16 hdr_tot_len;
391 __u8 imb_hdr_no;
392 __u8 reserved;
393 __u8 hdr_type;
394 __u8 hdr_version;
395 __u16 hdr_len;
396 __u32 payload_len;
397 __u16 mss;
398 __u16 dg_hdr_len;
399 __u8 padding[16];
400 } __attribute__ ((packed));
401
402 struct qeth_hdr_tso {
403 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
404 struct qeth_hdr_ext_tso ext;
405 } __attribute__ ((packed));
406
407
408 /* flags for qeth_hdr.flags */
409 #define QETH_HDR_PASSTHRU 0x10
410 #define QETH_HDR_IPV6 0x80
411 #define QETH_HDR_CAST_MASK 0x07
412 enum qeth_cast_flags {
413 QETH_CAST_UNICAST = 0x06,
414 QETH_CAST_MULTICAST = 0x04,
415 QETH_CAST_BROADCAST = 0x05,
416 QETH_CAST_ANYCAST = 0x07,
417 QETH_CAST_NOCAST = 0x00,
418 };
419
420 enum qeth_layer2_frame_flags {
421 QETH_LAYER2_FLAG_MULTICAST = 0x01,
422 QETH_LAYER2_FLAG_BROADCAST = 0x02,
423 QETH_LAYER2_FLAG_UNICAST = 0x04,
424 QETH_LAYER2_FLAG_VLAN = 0x10,
425 };
426
427 enum qeth_header_ids {
428 QETH_HEADER_TYPE_LAYER3 = 0x01,
429 QETH_HEADER_TYPE_LAYER2 = 0x02,
430 QETH_HEADER_TYPE_TSO = 0x03,
431 QETH_HEADER_TYPE_OSN = 0x04,
432 };
433 /* flags for qeth_hdr.ext_flags */
434 #define QETH_HDR_EXT_VLAN_FRAME 0x01
435 #define QETH_HDR_EXT_TOKEN_ID 0x02
436 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
437 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08
438 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10
439 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20
440 #define QETH_HDR_EXT_UDP_TSO 0x40 /*bit off for TCP*/
441
442 static inline int
443 qeth_is_last_sbale(struct qdio_buffer_element *sbale)
444 {
445 return (sbale->flags & SBAL_FLAGS_LAST_ENTRY);
446 }
447
448 enum qeth_qdio_buffer_states {
449 /*
450 * inbound: read out by driver; owned by hardware in order to be filled
451 * outbound: owned by driver in order to be filled
452 */
453 QETH_QDIO_BUF_EMPTY,
454 /*
455 * inbound: filled by hardware; owned by driver in order to be read out
456 * outbound: filled by driver; owned by hardware in order to be sent
457 */
458 QETH_QDIO_BUF_PRIMED,
459 };
460
461 enum qeth_qdio_info_states {
462 QETH_QDIO_UNINITIALIZED,
463 QETH_QDIO_ALLOCATED,
464 QETH_QDIO_ESTABLISHED,
465 };
466
467 struct qeth_buffer_pool_entry {
468 struct list_head list;
469 struct list_head init_list;
470 void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
471 };
472
473 struct qeth_qdio_buffer_pool {
474 struct list_head entry_list;
475 int buf_count;
476 };
477
478 struct qeth_qdio_buffer {
479 struct qdio_buffer *buffer;
480 volatile enum qeth_qdio_buffer_states state;
481 /* the buffer pool entry currently associated to this buffer */
482 struct qeth_buffer_pool_entry *pool_entry;
483 };
484
485 struct qeth_qdio_q {
486 struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
487 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
488 /*
489 * buf_to_init means "buffer must be initialized by driver and must
490 * be made available for hardware" -> state is set to EMPTY
491 */
492 volatile int next_buf_to_init;
493 } __attribute__ ((aligned(256)));
494
495 /* possible types of qeth large_send support */
496 enum qeth_large_send_types {
497 QETH_LARGE_SEND_NO,
498 QETH_LARGE_SEND_EDDP,
499 QETH_LARGE_SEND_TSO,
500 };
501
502 struct qeth_qdio_out_buffer {
503 struct qdio_buffer *buffer;
504 atomic_t state;
505 volatile int next_element_to_fill;
506 struct sk_buff_head skb_list;
507 struct list_head ctx_list;
508 };
509
510 struct qeth_card;
511
512 enum qeth_out_q_states {
513 QETH_OUT_Q_UNLOCKED,
514 QETH_OUT_Q_LOCKED,
515 QETH_OUT_Q_LOCKED_FLUSH,
516 };
517
518 struct qeth_qdio_out_q {
519 struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
520 struct qeth_qdio_out_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
521 int queue_no;
522 struct qeth_card *card;
523 atomic_t state;
524 volatile int do_pack;
525 /*
526 * index of buffer to be filled by driver; state EMPTY or PACKING
527 */
528 volatile int next_buf_to_fill;
529 /*
530 * number of buffers that are currently filled (PRIMED)
531 * -> these buffers are hardware-owned
532 */
533 atomic_t used_buffers;
534 /* indicates whether PCI flag must be set (or if one is outstanding) */
535 atomic_t set_pci_flags_count;
536 } __attribute__ ((aligned(256)));
537
538 struct qeth_qdio_info {
539 volatile enum qeth_qdio_info_states state;
540 /* input */
541 struct qeth_qdio_q *in_q;
542 struct qeth_qdio_buffer_pool in_buf_pool;
543 struct qeth_qdio_buffer_pool init_pool;
544 int in_buf_size;
545
546 /* output */
547 int no_out_queues;
548 struct qeth_qdio_out_q **out_qs;
549
550 /* priority queueing */
551 int do_prio_queueing;
552 int default_out_queue;
553 };
554
555 enum qeth_send_errors {
556 QETH_SEND_ERROR_NONE,
557 QETH_SEND_ERROR_LINK_FAILURE,
558 QETH_SEND_ERROR_RETRY,
559 QETH_SEND_ERROR_KICK_IT,
560 };
561
562 #define QETH_ETH_MAC_V4 0x0100 /* like v4 */
563 #define QETH_ETH_MAC_V6 0x3333 /* like v6 */
564 /* tr mc mac is longer, but that will be enough to detect mc frames */
565 #define QETH_TR_MAC_NC 0xc000 /* non-canonical */
566 #define QETH_TR_MAC_C 0x0300 /* canonical */
567
568 #define DEFAULT_ADD_HHLEN 0
569 #define MAX_ADD_HHLEN 1024
570
571 /**
572 * buffer stuff for read channel
573 */
574 #define QETH_CMD_BUFFER_NO 8
575
576 /**
577 * channel state machine
578 */
579 enum qeth_channel_states {
580 CH_STATE_UP,
581 CH_STATE_DOWN,
582 CH_STATE_ACTIVATING,
583 CH_STATE_HALTED,
584 CH_STATE_STOPPED,
585 };
586 /**
587 * card state machine
588 */
589 enum qeth_card_states {
590 CARD_STATE_DOWN,
591 CARD_STATE_HARDSETUP,
592 CARD_STATE_SOFTSETUP,
593 CARD_STATE_UP,
594 CARD_STATE_RECOVER,
595 };
596
597 /**
598 * Protocol versions
599 */
600 enum qeth_prot_versions {
601 QETH_PROT_IPV4 = 0x0004,
602 QETH_PROT_IPV6 = 0x0006,
603 };
604
605 enum qeth_ip_types {
606 QETH_IP_TYPE_NORMAL,
607 QETH_IP_TYPE_VIPA,
608 QETH_IP_TYPE_RXIP,
609 QETH_IP_TYPE_DEL_ALL_MC,
610 };
611
612 enum qeth_cmd_buffer_state {
613 BUF_STATE_FREE,
614 BUF_STATE_LOCKED,
615 BUF_STATE_PROCESSED,
616 };
617 /**
618 * IP address and multicast list
619 */
620 struct qeth_ipaddr {
621 struct list_head entry;
622 enum qeth_ip_types type;
623 enum qeth_ipa_setdelip_flags set_flags;
624 enum qeth_ipa_setdelip_flags del_flags;
625 int is_multicast;
626 volatile int users;
627 enum qeth_prot_versions proto;
628 unsigned char mac[OSA_ADDR_LEN];
629 union {
630 struct {
631 unsigned int addr;
632 unsigned int mask;
633 } a4;
634 struct {
635 struct in6_addr addr;
636 unsigned int pfxlen;
637 } a6;
638 } u;
639 };
640
641 struct qeth_ipato_entry {
642 struct list_head entry;
643 enum qeth_prot_versions proto;
644 char addr[16];
645 int mask_bits;
646 };
647
648 struct qeth_ipato {
649 int enabled;
650 int invert4;
651 int invert6;
652 struct list_head entries;
653 };
654
655 struct qeth_channel;
656
657 struct qeth_cmd_buffer {
658 enum qeth_cmd_buffer_state state;
659 struct qeth_channel *channel;
660 unsigned char *data;
661 int rc;
662 void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
663 };
664
665
666 /**
667 * definition of a qeth channel, used for read and write
668 */
669 struct qeth_channel {
670 enum qeth_channel_states state;
671 struct ccw1 ccw;
672 spinlock_t iob_lock;
673 wait_queue_head_t wait_q;
674 struct tasklet_struct irq_tasklet;
675 struct ccw_device *ccwdev;
676 /*command buffer for control data*/
677 struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
678 atomic_t irq_pending;
679 volatile int io_buf_no;
680 volatile int buf_no;
681 };
682
683 /**
684 * OSA card related definitions
685 */
686 struct qeth_token {
687 __u32 issuer_rm_w;
688 __u32 issuer_rm_r;
689 __u32 cm_filter_w;
690 __u32 cm_filter_r;
691 __u32 cm_connection_w;
692 __u32 cm_connection_r;
693 __u32 ulp_filter_w;
694 __u32 ulp_filter_r;
695 __u32 ulp_connection_w;
696 __u32 ulp_connection_r;
697 };
698
699 struct qeth_seqno {
700 __u32 trans_hdr;
701 __u32 pdu_hdr;
702 __u32 pdu_hdr_ack;
703 __u16 ipa;
704 __u32 pkt_seqno;
705 };
706
707 struct qeth_reply {
708 struct list_head list;
709 wait_queue_head_t wait_q;
710 int (*callback)(struct qeth_card *,struct qeth_reply *,unsigned long);
711 u32 seqno;
712 unsigned long offset;
713 int received;
714 int rc;
715 void *param;
716 struct qeth_card *card;
717 atomic_t refcnt;
718 };
719
720
721 struct qeth_card_blkt {
722 int time_total;
723 int inter_packet;
724 int inter_packet_jumbo;
725 };
726
727 #define QETH_BROADCAST_WITH_ECHO 0x01
728 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
729 #define QETH_LAYER2_MAC_READ 0x01
730 #define QETH_LAYER2_MAC_REGISTERED 0x02
731 struct qeth_card_info {
732 unsigned short unit_addr2;
733 unsigned short cula;
734 unsigned short chpid;
735 __u16 func_level;
736 char mcl_level[QETH_MCL_LENGTH + 1];
737 int guestlan;
738 int mac_bits;
739 int portname_required;
740 int portno;
741 char portname[9];
742 enum qeth_card_types type;
743 enum qeth_link_types link_type;
744 int is_multicast_different;
745 int initial_mtu;
746 int max_mtu;
747 int broadcast_capable;
748 int unique_id;
749 struct qeth_card_blkt blkt;
750 __u32 csum_mask;
751 enum qeth_ipa_promisc_modes promisc_mode;
752 };
753
754 struct qeth_card_options {
755 struct qeth_routing_info route4;
756 struct qeth_ipa_info ipa4;
757 struct qeth_ipa_info adp; /*Adapter parameters*/
758 #ifdef CONFIG_QETH_IPV6
759 struct qeth_routing_info route6;
760 struct qeth_ipa_info ipa6;
761 #endif /* QETH_IPV6 */
762 enum qeth_checksum_types checksum_type;
763 int broadcast_mode;
764 int macaddr_mode;
765 int fake_broadcast;
766 int add_hhlen;
767 int fake_ll;
768 int layer2;
769 enum qeth_large_send_types large_send;
770 };
771
772 /*
773 * thread bits for qeth_card thread masks
774 */
775 enum qeth_threads {
776 QETH_SET_IP_THREAD = 1,
777 QETH_RECOVER_THREAD = 2,
778 QETH_SET_PROMISC_MODE_THREAD = 4,
779 };
780
781 struct qeth_osn_info {
782 int (*assist_cb)(struct net_device *dev, void *data);
783 int (*data_cb)(struct sk_buff *skb);
784 };
785
786 struct qeth_card {
787 struct list_head list;
788 enum qeth_card_states state;
789 int lan_online;
790 spinlock_t lock;
791 /*hardware and sysfs stuff*/
792 struct ccwgroup_device *gdev;
793 struct qeth_channel read;
794 struct qeth_channel write;
795 struct qeth_channel data;
796
797 struct net_device *dev;
798 struct net_device_stats stats;
799
800 struct qeth_card_info info;
801 struct qeth_token token;
802 struct qeth_seqno seqno;
803 struct qeth_card_options options;
804
805 wait_queue_head_t wait_q;
806 #ifdef CONFIG_QETH_VLAN
807 spinlock_t vlanlock;
808 struct vlan_group *vlangrp;
809 #endif
810 struct work_struct kernel_thread_starter;
811 spinlock_t thread_mask_lock;
812 volatile unsigned long thread_start_mask;
813 volatile unsigned long thread_allowed_mask;
814 volatile unsigned long thread_running_mask;
815 spinlock_t ip_lock;
816 struct list_head ip_list;
817 struct list_head *ip_tbd_list;
818 struct qeth_ipato ipato;
819 struct list_head cmd_waiter_list;
820 /* QDIO buffer handling */
821 struct qeth_qdio_info qdio;
822 #ifdef CONFIG_QETH_PERF_STATS
823 struct qeth_perf_stats perf_stats;
824 #endif /* CONFIG_QETH_PERF_STATS */
825 int use_hard_stop;
826 int (*orig_hard_header)(struct sk_buff *,struct net_device *,
827 unsigned short,void *,void *,unsigned);
828 struct qeth_osn_info osn_info;
829 };
830
831 struct qeth_card_list_struct {
832 struct list_head list;
833 rwlock_t rwlock;
834 };
835
836 extern struct qeth_card_list_struct qeth_card_list;
837
838 /*notifier list */
839 struct qeth_notify_list_struct {
840 struct list_head list;
841 struct task_struct *task;
842 int signum;
843 };
844 extern spinlock_t qeth_notify_lock;
845 extern struct list_head qeth_notify_list;
846
847 /*some helper functions*/
848
849 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
850
851 static inline __u8
852 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
853 {
854 switch (link_type) {
855 case QETH_LINK_TYPE_HSTR:
856 return 2;
857 default:
858 return 1;
859 }
860 }
861
862 static inline struct sk_buff *
863 qeth_realloc_headroom(struct qeth_card *card, struct sk_buff *skb, int size)
864 {
865 struct sk_buff *new_skb = skb;
866
867 if (skb_headroom(skb) >= size)
868 return skb;
869 new_skb = skb_realloc_headroom(skb, size);
870 if (!new_skb)
871 PRINT_ERR("Could not realloc headroom for qeth_hdr "
872 "on interface %s", QETH_CARD_IFNAME(card));
873 return new_skb;
874 }
875
876 static inline struct sk_buff *
877 qeth_pskb_unshare(struct sk_buff *skb, int pri)
878 {
879 struct sk_buff *nskb;
880 if (!skb_cloned(skb))
881 return skb;
882 nskb = skb_copy(skb, pri);
883 return nskb;
884 }
885
886 static inline void *
887 qeth_push_skb(struct qeth_card *card, struct sk_buff *skb, int size)
888 {
889 void *hdr;
890
891 hdr = (void *) skb_push(skb, size);
892 /*
893 * sanity check, the Linux memory allocation scheme should
894 * never present us cases like this one (the qdio header size plus
895 * the first 40 bytes of the paket cross a 4k boundary)
896 */
897 if ((((unsigned long) hdr) & (~(PAGE_SIZE - 1))) !=
898 (((unsigned long) hdr + size +
899 QETH_IP_HEADER_SIZE) & (~(PAGE_SIZE - 1)))) {
900 PRINT_ERR("Misaligned packet on interface %s. Discarded.",
901 QETH_CARD_IFNAME(card));
902 return NULL;
903 }
904 return hdr;
905 }
906
907
908 static inline int
909 qeth_get_hlen(__u8 link_type)
910 {
911 #ifdef CONFIG_QETH_IPV6
912 switch (link_type) {
913 case QETH_LINK_TYPE_HSTR:
914 case QETH_LINK_TYPE_LANE_TR:
915 return sizeof(struct qeth_hdr_tso) + TR_HLEN;
916 default:
917 #ifdef CONFIG_QETH_VLAN
918 return sizeof(struct qeth_hdr_tso) + VLAN_ETH_HLEN;
919 #else
920 return sizeof(struct qeth_hdr_tso) + ETH_HLEN;
921 #endif
922 }
923 #else /* CONFIG_QETH_IPV6 */
924 #ifdef CONFIG_QETH_VLAN
925 return sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
926 #else
927 return sizeof(struct qeth_hdr_tso);
928 #endif
929 #endif /* CONFIG_QETH_IPV6 */
930 }
931
932 static inline unsigned short
933 qeth_get_netdev_flags(struct qeth_card *card)
934 {
935 if (card->options.layer2 &&
936 (card->info.type == QETH_CARD_TYPE_OSAE))
937 return 0;
938 switch (card->info.type) {
939 case QETH_CARD_TYPE_IQD:
940 case QETH_CARD_TYPE_OSN:
941 return IFF_NOARP;
942 #ifdef CONFIG_QETH_IPV6
943 default:
944 return 0;
945 #else
946 default:
947 return IFF_NOARP;
948 #endif
949 }
950 }
951
952 static inline int
953 qeth_get_initial_mtu_for_card(struct qeth_card * card)
954 {
955 switch (card->info.type) {
956 case QETH_CARD_TYPE_UNKNOWN:
957 return 1500;
958 case QETH_CARD_TYPE_IQD:
959 return card->info.max_mtu;
960 case QETH_CARD_TYPE_OSAE:
961 switch (card->info.link_type) {
962 case QETH_LINK_TYPE_HSTR:
963 case QETH_LINK_TYPE_LANE_TR:
964 return 2000;
965 default:
966 return 1492;
967 }
968 default:
969 return 1500;
970 }
971 }
972
973 static inline int
974 qeth_get_max_mtu_for_card(int cardtype)
975 {
976 switch (cardtype) {
977
978 case QETH_CARD_TYPE_UNKNOWN:
979 case QETH_CARD_TYPE_OSAE:
980 case QETH_CARD_TYPE_OSN:
981 return 61440;
982 case QETH_CARD_TYPE_IQD:
983 return 57344;
984 default:
985 return 1500;
986 }
987 }
988
989 static inline int
990 qeth_get_mtu_out_of_mpc(int cardtype)
991 {
992 switch (cardtype) {
993 case QETH_CARD_TYPE_IQD:
994 return 1;
995 default:
996 return 0;
997 }
998 }
999
1000 static inline int
1001 qeth_get_mtu_outof_framesize(int framesize)
1002 {
1003 switch (framesize) {
1004 case 0x4000:
1005 return 8192;
1006 case 0x6000:
1007 return 16384;
1008 case 0xa000:
1009 return 32768;
1010 case 0xffff:
1011 return 57344;
1012 default:
1013 return 0;
1014 }
1015 }
1016
1017 static inline int
1018 qeth_mtu_is_valid(struct qeth_card * card, int mtu)
1019 {
1020 switch (card->info.type) {
1021 case QETH_CARD_TYPE_OSAE:
1022 return ((mtu >= 576) && (mtu <= 61440));
1023 case QETH_CARD_TYPE_IQD:
1024 return ((mtu >= 576) &&
1025 (mtu <= card->info.max_mtu + 4096 - 32));
1026 case QETH_CARD_TYPE_OSN:
1027 case QETH_CARD_TYPE_UNKNOWN:
1028 default:
1029 return 1;
1030 }
1031 }
1032
1033 static inline int
1034 qeth_get_arphdr_type(int cardtype, int linktype)
1035 {
1036 switch (cardtype) {
1037 case QETH_CARD_TYPE_OSAE:
1038 case QETH_CARD_TYPE_OSN:
1039 switch (linktype) {
1040 case QETH_LINK_TYPE_LANE_TR:
1041 case QETH_LINK_TYPE_HSTR:
1042 return ARPHRD_IEEE802_TR;
1043 default:
1044 return ARPHRD_ETHER;
1045 }
1046 case QETH_CARD_TYPE_IQD:
1047 default:
1048 return ARPHRD_ETHER;
1049 }
1050 }
1051
1052 #ifdef CONFIG_QETH_PERF_STATS
1053 static inline int
1054 qeth_get_micros(void)
1055 {
1056 return (int) (get_clock() >> 12);
1057 }
1058 #endif
1059
1060 static inline int
1061 qeth_get_qdio_q_format(struct qeth_card *card)
1062 {
1063 switch (card->info.type) {
1064 case QETH_CARD_TYPE_IQD:
1065 return 2;
1066 default:
1067 return 0;
1068 }
1069 }
1070
1071 static inline int
1072 qeth_isxdigit(char * buf)
1073 {
1074 while (*buf) {
1075 if (!isxdigit(*buf++))
1076 return 0;
1077 }
1078 return 1;
1079 }
1080
1081 static inline void
1082 qeth_ipaddr4_to_string(const __u8 *addr, char *buf)
1083 {
1084 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
1085 }
1086
1087 static inline int
1088 qeth_string_to_ipaddr4(const char *buf, __u8 *addr)
1089 {
1090 int count = 0, rc = 0;
1091 int in[4];
1092 char c;
1093
1094 rc = sscanf(buf, "%u.%u.%u.%u%c",
1095 &in[0], &in[1], &in[2], &in[3], &c);
1096 if (rc != 4 && (rc != 5 || c != '\n'))
1097 return -EINVAL;
1098 for (count = 0; count < 4; count++) {
1099 if (in[count] > 255)
1100 return -EINVAL;
1101 addr[count] = in[count];
1102 }
1103 return 0;
1104 }
1105
1106 static inline void
1107 qeth_ipaddr6_to_string(const __u8 *addr, char *buf)
1108 {
1109 sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
1110 ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
1111 addr[0], addr[1], addr[2], addr[3],
1112 addr[4], addr[5], addr[6], addr[7],
1113 addr[8], addr[9], addr[10], addr[11],
1114 addr[12], addr[13], addr[14], addr[15]);
1115 }
1116
1117 static inline int
1118 qeth_string_to_ipaddr6(const char *buf, __u8 *addr)
1119 {
1120 const char *end, *end_tmp, *start;
1121 __u16 *in;
1122 char num[5];
1123 int num2, cnt, out, found, save_cnt;
1124 unsigned short in_tmp[8] = {0, };
1125
1126 cnt = out = found = save_cnt = num2 = 0;
1127 end = start = buf;
1128 in = (__u16 *) addr;
1129 memset(in, 0, 16);
1130 while (*end) {
1131 end = strchr(start,':');
1132 if (end == NULL) {
1133 end = buf + strlen(buf);
1134 if ((end_tmp = strchr(start, '\n')) != NULL)
1135 end = end_tmp;
1136 out = 1;
1137 }
1138 if ((end - start)) {
1139 memset(num, 0, 5);
1140 if ((end - start) > 4)
1141 return -EINVAL;
1142 memcpy(num, start, end - start);
1143 if (!qeth_isxdigit(num))
1144 return -EINVAL;
1145 sscanf(start, "%x", &num2);
1146 if (found)
1147 in_tmp[save_cnt++] = num2;
1148 else
1149 in[cnt++] = num2;
1150 if (out)
1151 break;
1152 } else {
1153 if (found)
1154 return -EINVAL;
1155 found = 1;
1156 }
1157 start = ++end;
1158 }
1159 if (cnt + save_cnt > 8)
1160 return -EINVAL;
1161 cnt = 7;
1162 while (save_cnt)
1163 in[cnt--] = in_tmp[--save_cnt];
1164 return 0;
1165 }
1166
1167 static inline void
1168 qeth_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
1169 char *buf)
1170 {
1171 if (proto == QETH_PROT_IPV4)
1172 return qeth_ipaddr4_to_string(addr, buf);
1173 else if (proto == QETH_PROT_IPV6)
1174 return qeth_ipaddr6_to_string(addr, buf);
1175 }
1176
1177 static inline int
1178 qeth_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
1179 __u8 *addr)
1180 {
1181 if (proto == QETH_PROT_IPV4)
1182 return qeth_string_to_ipaddr4(buf, addr);
1183 else if (proto == QETH_PROT_IPV6)
1184 return qeth_string_to_ipaddr6(buf, addr);
1185 else
1186 return -EINVAL;
1187 }
1188
1189 extern int
1190 qeth_setrouting_v4(struct qeth_card *);
1191 extern int
1192 qeth_setrouting_v6(struct qeth_card *);
1193
1194 extern int
1195 qeth_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);
1196
1197 extern void
1198 qeth_del_ipato_entry(struct qeth_card *, enum qeth_prot_versions, u8 *, int);
1199
1200 extern int
1201 qeth_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1202
1203 extern void
1204 qeth_del_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1205
1206 extern int
1207 qeth_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1208
1209 extern void
1210 qeth_del_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1211
1212 extern int
1213 qeth_notifier_register(struct task_struct *, int );
1214
1215 extern int
1216 qeth_notifier_unregister(struct task_struct * );
1217
1218 extern void
1219 qeth_schedule_recovery(struct qeth_card *);
1220
1221 extern int
1222 qeth_realloc_buffer_pool(struct qeth_card *, int);
1223
1224 extern int
1225 qeth_set_large_send(struct qeth_card *, enum qeth_large_send_types);
1226
1227 extern void
1228 qeth_fill_header(struct qeth_card *, struct qeth_hdr *,
1229 struct sk_buff *, int, int);
1230 extern void
1231 qeth_flush_buffers(struct qeth_qdio_out_q *, int, int, int);
1232
1233 extern int
1234 qeth_osn_assist(struct net_device *, void *, int);
1235
1236 extern int
1237 qeth_osn_register(unsigned char *read_dev_no,
1238 struct net_device **,
1239 int (*assist_cb)(struct net_device *, void *),
1240 int (*data_cb)(struct sk_buff *));
1241
1242 extern void
1243 qeth_osn_deregister(struct net_device *);
1244
1245 #endif /* __QETH_H__ */
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