xref: /openbmc/linux/drivers/s390/net/qeth_core.h (revision 6aa7de05)
1 /*
2  *    Copyright IBM Corp. 2007
3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4  *		 Frank Pavlic <fpavlic@de.ibm.com>,
5  *		 Thomas Spatzier <tspat@de.ibm.com>,
6  *		 Frank Blaschka <frank.blaschka@de.ibm.com>
7  */
8 
9 #ifndef __QETH_CORE_H__
10 #define __QETH_CORE_H__
11 
12 #include <linux/if.h>
13 #include <linux/if_arp.h>
14 #include <linux/etherdevice.h>
15 #include <linux/if_vlan.h>
16 #include <linux/ctype.h>
17 #include <linux/in6.h>
18 #include <linux/bitops.h>
19 #include <linux/seq_file.h>
20 #include <linux/ethtool.h>
21 #include <linux/hashtable.h>
22 #include <linux/ip.h>
23 
24 #include <net/ipv6.h>
25 #include <net/if_inet6.h>
26 #include <net/addrconf.h>
27 
28 #include <asm/debug.h>
29 #include <asm/qdio.h>
30 #include <asm/ccwdev.h>
31 #include <asm/ccwgroup.h>
32 #include <asm/sysinfo.h>
33 
34 #include "qeth_core_mpc.h"
35 
36 /**
37  * Debug Facility stuff
38  */
39 enum qeth_dbf_names {
40 	QETH_DBF_SETUP,
41 	QETH_DBF_MSG,
42 	QETH_DBF_CTRL,
43 	QETH_DBF_INFOS	/* must be last element */
44 };
45 
46 struct qeth_dbf_info {
47 	char name[DEBUG_MAX_NAME_LEN];
48 	int pages;
49 	int areas;
50 	int len;
51 	int level;
52 	struct debug_view *view;
53 	debug_info_t *id;
54 };
55 
56 #define QETH_DBF_CTRL_LEN 256
57 
58 #define QETH_DBF_TEXT(name, level, text) \
59 	debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
60 
61 #define QETH_DBF_HEX(name, level, addr, len) \
62 	debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
63 
64 #define QETH_DBF_MESSAGE(level, text...) \
65 	debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
66 
67 #define QETH_DBF_TEXT_(name, level, text...) \
68 	qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
69 
70 #define QETH_CARD_TEXT(card, level, text) \
71 	debug_text_event(card->debug, level, text)
72 
73 #define QETH_CARD_HEX(card, level, addr, len) \
74 	debug_event(card->debug, level, (void *)(addr), len)
75 
76 #define QETH_CARD_MESSAGE(card, text...) \
77 	debug_sprintf_event(card->debug, level, text)
78 
79 #define QETH_CARD_TEXT_(card, level, text...) \
80 	qeth_dbf_longtext(card->debug, level, text)
81 
82 #define SENSE_COMMAND_REJECT_BYTE 0
83 #define SENSE_COMMAND_REJECT_FLAG 0x80
84 #define SENSE_RESETTING_EVENT_BYTE 1
85 #define SENSE_RESETTING_EVENT_FLAG 0x80
86 
87 /*
88  * Common IO related definitions
89  */
90 #define CARD_RDEV(card) card->read.ccwdev
91 #define CARD_WDEV(card) card->write.ccwdev
92 #define CARD_DDEV(card) card->data.ccwdev
93 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
94 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
95 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
96 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
97 #define CHANNEL_ID(channel) dev_name(&channel->ccwdev->dev)
98 
99 /**
100  * card stuff
101  */
102 struct qeth_perf_stats {
103 	unsigned int bufs_rec;
104 	unsigned int bufs_sent;
105 
106 	unsigned int skbs_sent_pack;
107 	unsigned int bufs_sent_pack;
108 
109 	unsigned int sc_dp_p;
110 	unsigned int sc_p_dp;
111 	/* qdio_cq_handler: number of times called, time spent in */
112 	__u64 cq_start_time;
113 	unsigned int cq_cnt;
114 	unsigned int cq_time;
115 	/* qdio_input_handler: number of times called, time spent in */
116 	__u64 inbound_start_time;
117 	unsigned int inbound_cnt;
118 	unsigned int inbound_time;
119 	/* qeth_send_packet: number of times called, time spent in */
120 	__u64 outbound_start_time;
121 	unsigned int outbound_cnt;
122 	unsigned int outbound_time;
123 	/* qdio_output_handler: number of times called, time spent in */
124 	__u64 outbound_handler_start_time;
125 	unsigned int outbound_handler_cnt;
126 	unsigned int outbound_handler_time;
127 	/* number of calls to and time spent in do_QDIO for inbound queue */
128 	__u64 inbound_do_qdio_start_time;
129 	unsigned int inbound_do_qdio_cnt;
130 	unsigned int inbound_do_qdio_time;
131 	/* number of calls to and time spent in do_QDIO for outbound queues */
132 	__u64 outbound_do_qdio_start_time;
133 	unsigned int outbound_do_qdio_cnt;
134 	unsigned int outbound_do_qdio_time;
135 	unsigned int large_send_bytes;
136 	unsigned int large_send_cnt;
137 	unsigned int sg_skbs_sent;
138 	unsigned int sg_frags_sent;
139 	/* initial values when measuring starts */
140 	unsigned long initial_rx_packets;
141 	unsigned long initial_tx_packets;
142 	/* inbound scatter gather data */
143 	unsigned int sg_skbs_rx;
144 	unsigned int sg_frags_rx;
145 	unsigned int sg_alloc_page_rx;
146 	unsigned int tx_csum;
147 	unsigned int tx_lin;
148 	unsigned int tx_linfail;
149 };
150 
151 /* Routing stuff */
152 struct qeth_routing_info {
153 	enum qeth_routing_types type;
154 };
155 
156 /* IPA stuff */
157 struct qeth_ipa_info {
158 	__u32 supported_funcs;
159 	__u32 enabled_funcs;
160 };
161 
162 /* SETBRIDGEPORT stuff */
163 enum qeth_sbp_roles {
164 	QETH_SBP_ROLE_NONE	= 0,
165 	QETH_SBP_ROLE_PRIMARY	= 1,
166 	QETH_SBP_ROLE_SECONDARY	= 2,
167 };
168 
169 enum qeth_sbp_states {
170 	QETH_SBP_STATE_INACTIVE	= 0,
171 	QETH_SBP_STATE_STANDBY	= 1,
172 	QETH_SBP_STATE_ACTIVE	= 2,
173 };
174 
175 #define QETH_SBP_HOST_NOTIFICATION 1
176 
177 struct qeth_sbp_info {
178 	__u32 supported_funcs;
179 	enum qeth_sbp_roles role;
180 	__u32 hostnotification:1;
181 	__u32 reflect_promisc:1;
182 	__u32 reflect_promisc_primary:1;
183 };
184 
185 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
186 		enum qeth_ipa_funcs func)
187 {
188 	return (ipa->supported_funcs & func);
189 }
190 
191 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
192 		enum qeth_ipa_funcs func)
193 {
194 	return (ipa->supported_funcs & ipa->enabled_funcs & func);
195 }
196 
197 #define qeth_adp_supported(c, f) \
198 	qeth_is_ipa_supported(&c->options.adp, f)
199 #define qeth_adp_enabled(c, f) \
200 	qeth_is_ipa_enabled(&c->options.adp, f)
201 #define qeth_is_supported(c, f) \
202 	qeth_is_ipa_supported(&c->options.ipa4, f)
203 #define qeth_is_enabled(c, f) \
204 	qeth_is_ipa_enabled(&c->options.ipa4, f)
205 #define qeth_is_supported6(c, f) \
206 	qeth_is_ipa_supported(&c->options.ipa6, f)
207 #define qeth_is_enabled6(c, f) \
208 	qeth_is_ipa_enabled(&c->options.ipa6, f)
209 #define qeth_is_ipafunc_supported(c, prot, f) \
210 	 ((prot == QETH_PROT_IPV6) ? \
211 		qeth_is_supported6(c, f) : qeth_is_supported(c, f))
212 #define qeth_is_ipafunc_enabled(c, prot, f) \
213 	 ((prot == QETH_PROT_IPV6) ? \
214 		qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
215 
216 #define QETH_IDX_FUNC_LEVEL_OSD		 0x0101
217 #define QETH_IDX_FUNC_LEVEL_IQD		 0x4108
218 
219 #define QETH_MODELLIST_ARRAY \
220 	{{0x1731, 0x01, 0x1732, QETH_CARD_TYPE_OSD, QETH_MAX_QUEUES, 0}, \
221 	 {0x1731, 0x05, 0x1732, QETH_CARD_TYPE_IQD, QETH_MAX_QUEUES, 0x103}, \
222 	 {0x1731, 0x06, 0x1732, QETH_CARD_TYPE_OSN, QETH_MAX_QUEUES, 0}, \
223 	 {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSM, QETH_MAX_QUEUES, 0}, \
224 	 {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSX, QETH_MAX_QUEUES, 0}, \
225 	 {0, 0, 0, 0, 0, 0} }
226 #define QETH_CU_TYPE_IND	0
227 #define QETH_CU_MODEL_IND	1
228 #define QETH_DEV_TYPE_IND	2
229 #define QETH_DEV_MODEL_IND	3
230 #define QETH_QUEUE_NO_IND	4
231 #define QETH_MULTICAST_IND	5
232 
233 #define QETH_REAL_CARD		1
234 #define QETH_VLAN_CARD		2
235 #define QETH_BUFSIZE		4096
236 
237 /**
238  * some more defs
239  */
240 #define QETH_TX_TIMEOUT		100 * HZ
241 #define QETH_RCD_TIMEOUT	60 * HZ
242 #define QETH_RECLAIM_WORK_TIME	HZ
243 #define QETH_MAX_PORTNO		15
244 
245 /*IPv6 address autoconfiguration stuff*/
246 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
247 #define UNIQUE_ID_NOT_BY_CARD		0x10000
248 
249 /*****************************************************************************/
250 /* QDIO queue and buffer handling                                            */
251 /*****************************************************************************/
252 #define QETH_MAX_QUEUES 4
253 #define QETH_IN_BUF_SIZE_DEFAULT 65536
254 #define QETH_IN_BUF_COUNT_DEFAULT 64
255 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
256 #define QETH_IN_BUF_COUNT_MIN 8
257 #define QETH_IN_BUF_COUNT_MAX 128
258 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
259 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
260 		 ((card)->qdio.in_buf_pool.buf_count / 2)
261 
262 /* buffers we have to be behind before we get a PCI */
263 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
264 /*enqueued free buffers left before we get a PCI*/
265 #define QETH_PCI_THRESHOLD_B(card) 0
266 /*not used unless the microcode gets patched*/
267 #define QETH_PCI_TIMER_VALUE(card) 3
268 
269 /* priority queing */
270 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
271 #define QETH_DEFAULT_QUEUE    2
272 #define QETH_NO_PRIO_QUEUEING 0
273 #define QETH_PRIO_Q_ING_PREC  1
274 #define QETH_PRIO_Q_ING_TOS   2
275 #define QETH_PRIO_Q_ING_SKB   3
276 #define QETH_PRIO_Q_ING_VLAN  4
277 
278 /* Packing */
279 #define QETH_LOW_WATERMARK_PACK  2
280 #define QETH_HIGH_WATERMARK_PACK 5
281 #define QETH_WATERMARK_PACK_FUZZ 1
282 
283 /* large receive scatter gather copy break */
284 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
285 #define QETH_RX_PULL_LEN 256
286 
287 struct qeth_hdr_layer3 {
288 	__u8  id;
289 	__u8  flags;
290 	__u16 inbound_checksum; /*TSO:__u16 seqno */
291 	__u32 token;		/*TSO: __u32 reserved */
292 	__u16 length;
293 	__u8  vlan_prio;
294 	__u8  ext_flags;
295 	__u16 vlan_id;
296 	__u16 frame_offset;
297 	__u8  dest_addr[16];
298 } __attribute__ ((packed));
299 
300 struct qeth_hdr_layer2 {
301 	__u8 id;
302 	__u8 flags[3];
303 	__u8 port_no;
304 	__u8 hdr_length;
305 	__u16 pkt_length;
306 	__u16 seq_no;
307 	__u16 vlan_id;
308 	__u32 reserved;
309 	__u8 reserved2[16];
310 } __attribute__ ((packed));
311 
312 struct qeth_hdr_osn {
313 	__u8 id;
314 	__u8 reserved;
315 	__u16 seq_no;
316 	__u16 reserved2;
317 	__u16 control_flags;
318 	__u16 pdu_length;
319 	__u8 reserved3[18];
320 	__u32 ccid;
321 } __attribute__ ((packed));
322 
323 struct qeth_hdr {
324 	union {
325 		struct qeth_hdr_layer2 l2;
326 		struct qeth_hdr_layer3 l3;
327 		struct qeth_hdr_osn    osn;
328 	} hdr;
329 } __attribute__ ((packed));
330 
331 /*TCP Segmentation Offload header*/
332 struct qeth_hdr_ext_tso {
333 	__u16 hdr_tot_len;
334 	__u8  imb_hdr_no;
335 	__u8  reserved;
336 	__u8  hdr_type;
337 	__u8  hdr_version;
338 	__u16 hdr_len;
339 	__u32 payload_len;
340 	__u16 mss;
341 	__u16 dg_hdr_len;
342 	__u8  padding[16];
343 } __attribute__ ((packed));
344 
345 struct qeth_hdr_tso {
346 	struct qeth_hdr hdr;	/*hdr->hdr.l3.xxx*/
347 	struct qeth_hdr_ext_tso ext;
348 } __attribute__ ((packed));
349 
350 
351 /* flags for qeth_hdr.flags */
352 #define QETH_HDR_PASSTHRU 0x10
353 #define QETH_HDR_IPV6     0x80
354 #define QETH_HDR_CAST_MASK 0x07
355 enum qeth_cast_flags {
356 	QETH_CAST_UNICAST   = 0x06,
357 	QETH_CAST_MULTICAST = 0x04,
358 	QETH_CAST_BROADCAST = 0x05,
359 	QETH_CAST_ANYCAST   = 0x07,
360 	QETH_CAST_NOCAST    = 0x00,
361 };
362 
363 enum qeth_layer2_frame_flags {
364 	QETH_LAYER2_FLAG_MULTICAST = 0x01,
365 	QETH_LAYER2_FLAG_BROADCAST = 0x02,
366 	QETH_LAYER2_FLAG_UNICAST   = 0x04,
367 	QETH_LAYER2_FLAG_VLAN      = 0x10,
368 };
369 
370 enum qeth_header_ids {
371 	QETH_HEADER_TYPE_LAYER3 = 0x01,
372 	QETH_HEADER_TYPE_LAYER2 = 0x02,
373 	QETH_HEADER_TYPE_TSO	= 0x03,
374 	QETH_HEADER_TYPE_OSN    = 0x04,
375 };
376 /* flags for qeth_hdr.ext_flags */
377 #define QETH_HDR_EXT_VLAN_FRAME       0x01
378 #define QETH_HDR_EXT_TOKEN_ID         0x02
379 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
380 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
381 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
382 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
383 #define QETH_HDR_EXT_UDP	      0x40 /*bit off for TCP*/
384 
385 enum qeth_qdio_buffer_states {
386 	/*
387 	 * inbound: read out by driver; owned by hardware in order to be filled
388 	 * outbound: owned by driver in order to be filled
389 	 */
390 	QETH_QDIO_BUF_EMPTY,
391 	/*
392 	 * inbound: filled by hardware; owned by driver in order to be read out
393 	 * outbound: filled by driver; owned by hardware in order to be sent
394 	 */
395 	QETH_QDIO_BUF_PRIMED,
396 	/*
397 	 * inbound: not applicable
398 	 * outbound: identified to be pending in TPQ
399 	 */
400 	QETH_QDIO_BUF_PENDING,
401 	/*
402 	 * inbound: not applicable
403 	 * outbound: found in completion queue
404 	 */
405 	QETH_QDIO_BUF_IN_CQ,
406 	/*
407 	 * inbound: not applicable
408 	 * outbound: handled via transfer pending / completion queue
409 	 */
410 	QETH_QDIO_BUF_HANDLED_DELAYED,
411 };
412 
413 enum qeth_qdio_info_states {
414 	QETH_QDIO_UNINITIALIZED,
415 	QETH_QDIO_ALLOCATED,
416 	QETH_QDIO_ESTABLISHED,
417 	QETH_QDIO_CLEANING
418 };
419 
420 struct qeth_buffer_pool_entry {
421 	struct list_head list;
422 	struct list_head init_list;
423 	void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
424 };
425 
426 struct qeth_qdio_buffer_pool {
427 	struct list_head entry_list;
428 	int buf_count;
429 };
430 
431 struct qeth_qdio_buffer {
432 	struct qdio_buffer *buffer;
433 	/* the buffer pool entry currently associated to this buffer */
434 	struct qeth_buffer_pool_entry *pool_entry;
435 	struct sk_buff *rx_skb;
436 };
437 
438 struct qeth_qdio_q {
439 	struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
440 	struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
441 	int next_buf_to_init;
442 };
443 
444 struct qeth_qdio_out_buffer {
445 	struct qdio_buffer *buffer;
446 	atomic_t state;
447 	int next_element_to_fill;
448 	struct sk_buff_head skb_list;
449 	int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
450 
451 	struct qaob *aob;
452 	struct qeth_qdio_out_q *q;
453 	struct qeth_qdio_out_buffer *next_pending;
454 };
455 
456 struct qeth_card;
457 
458 enum qeth_out_q_states {
459        QETH_OUT_Q_UNLOCKED,
460        QETH_OUT_Q_LOCKED,
461        QETH_OUT_Q_LOCKED_FLUSH,
462 };
463 
464 struct qeth_qdio_out_q {
465 	struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
466 	struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
467 	struct qdio_outbuf_state *bufstates; /* convenience pointer */
468 	int queue_no;
469 	struct qeth_card *card;
470 	atomic_t state;
471 	int do_pack;
472 	/*
473 	 * index of buffer to be filled by driver; state EMPTY or PACKING
474 	 */
475 	int next_buf_to_fill;
476 	/*
477 	 * number of buffers that are currently filled (PRIMED)
478 	 * -> these buffers are hardware-owned
479 	 */
480 	atomic_t used_buffers;
481 	/* indicates whether PCI flag must be set (or if one is outstanding) */
482 	atomic_t set_pci_flags_count;
483 };
484 
485 struct qeth_qdio_info {
486 	atomic_t state;
487 	/* input */
488 	int no_in_queues;
489 	struct qeth_qdio_q *in_q;
490 	struct qeth_qdio_q *c_q;
491 	struct qeth_qdio_buffer_pool in_buf_pool;
492 	struct qeth_qdio_buffer_pool init_pool;
493 	int in_buf_size;
494 
495 	/* output */
496 	int no_out_queues;
497 	struct qeth_qdio_out_q **out_qs;
498 	struct qdio_outbuf_state *out_bufstates;
499 
500 	/* priority queueing */
501 	int do_prio_queueing;
502 	int default_out_queue;
503 };
504 
505 #define QETH_ETH_MAC_V4      0x0100 /* like v4 */
506 #define QETH_ETH_MAC_V6      0x3333 /* like v6 */
507 /* tr mc mac is longer, but that will be enough to detect mc frames */
508 #define QETH_TR_MAC_NC       0xc000 /* non-canonical */
509 #define QETH_TR_MAC_C        0x0300 /* canonical */
510 
511 /**
512  * buffer stuff for read channel
513  */
514 #define QETH_CMD_BUFFER_NO	8
515 
516 /**
517  *  channel state machine
518  */
519 enum qeth_channel_states {
520 	CH_STATE_UP,
521 	CH_STATE_DOWN,
522 	CH_STATE_ACTIVATING,
523 	CH_STATE_HALTED,
524 	CH_STATE_STOPPED,
525 	CH_STATE_RCD,
526 	CH_STATE_RCD_DONE,
527 };
528 /**
529  * card state machine
530  */
531 enum qeth_card_states {
532 	CARD_STATE_DOWN,
533 	CARD_STATE_HARDSETUP,
534 	CARD_STATE_SOFTSETUP,
535 	CARD_STATE_UP,
536 	CARD_STATE_RECOVER,
537 };
538 
539 /**
540  * Protocol versions
541  */
542 enum qeth_prot_versions {
543 	QETH_PROT_IPV4 = 0x0004,
544 	QETH_PROT_IPV6 = 0x0006,
545 };
546 
547 enum qeth_ip_types {
548 	QETH_IP_TYPE_NORMAL,
549 	QETH_IP_TYPE_VIPA,
550 	QETH_IP_TYPE_RXIP,
551 };
552 
553 enum qeth_cmd_buffer_state {
554 	BUF_STATE_FREE,
555 	BUF_STATE_LOCKED,
556 	BUF_STATE_PROCESSED,
557 };
558 
559 enum qeth_cq {
560 	QETH_CQ_DISABLED = 0,
561 	QETH_CQ_ENABLED = 1,
562 	QETH_CQ_NOTAVAILABLE = 2,
563 };
564 
565 struct qeth_ipato {
566 	int enabled;
567 	int invert4;
568 	int invert6;
569 	struct list_head entries;
570 };
571 
572 struct qeth_channel;
573 
574 struct qeth_cmd_buffer {
575 	enum qeth_cmd_buffer_state state;
576 	struct qeth_channel *channel;
577 	unsigned char *data;
578 	int rc;
579 	void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
580 };
581 
582 /**
583  * definition of a qeth channel, used for read and write
584  */
585 struct qeth_channel {
586 	enum qeth_channel_states state;
587 	struct ccw1 ccw;
588 	spinlock_t iob_lock;
589 	wait_queue_head_t wait_q;
590 	struct ccw_device *ccwdev;
591 /*command buffer for control data*/
592 	struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
593 	atomic_t irq_pending;
594 	int io_buf_no;
595 	int buf_no;
596 };
597 
598 /**
599  *  OSA card related definitions
600  */
601 struct qeth_token {
602 	__u32 issuer_rm_w;
603 	__u32 issuer_rm_r;
604 	__u32 cm_filter_w;
605 	__u32 cm_filter_r;
606 	__u32 cm_connection_w;
607 	__u32 cm_connection_r;
608 	__u32 ulp_filter_w;
609 	__u32 ulp_filter_r;
610 	__u32 ulp_connection_w;
611 	__u32 ulp_connection_r;
612 };
613 
614 struct qeth_seqno {
615 	__u32 trans_hdr;
616 	__u32 pdu_hdr;
617 	__u32 pdu_hdr_ack;
618 	__u16 ipa;
619 	__u32 pkt_seqno;
620 };
621 
622 struct qeth_reply {
623 	struct list_head list;
624 	wait_queue_head_t wait_q;
625 	int (*callback)(struct qeth_card *, struct qeth_reply *,
626 		unsigned long);
627 	u32 seqno;
628 	unsigned long offset;
629 	atomic_t received;
630 	int rc;
631 	void *param;
632 	struct qeth_card *card;
633 	atomic_t refcnt;
634 };
635 
636 struct qeth_card_blkt {
637 	int time_total;
638 	int inter_packet;
639 	int inter_packet_jumbo;
640 };
641 
642 #define QETH_BROADCAST_WITH_ECHO    0x01
643 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
644 #define QETH_LAYER2_MAC_READ	    0x01
645 #define QETH_LAYER2_MAC_REGISTERED  0x02
646 struct qeth_card_info {
647 	unsigned short unit_addr2;
648 	unsigned short cula;
649 	unsigned short chpid;
650 	__u16 func_level;
651 	char mcl_level[QETH_MCL_LENGTH + 1];
652 	int guestlan;
653 	int mac_bits;
654 	int portno;
655 	enum qeth_card_types type;
656 	enum qeth_link_types link_type;
657 	int is_multicast_different;
658 	int initial_mtu;
659 	int max_mtu;
660 	int broadcast_capable;
661 	int unique_id;
662 	bool layer_enforced;
663 	struct qeth_card_blkt blkt;
664 	enum qeth_ipa_promisc_modes promisc_mode;
665 	__u32 diagass_support;
666 	__u32 hwtrap;
667 };
668 
669 struct qeth_card_options {
670 	struct qeth_routing_info route4;
671 	struct qeth_ipa_info ipa4;
672 	struct qeth_ipa_info adp; /*Adapter parameters*/
673 	struct qeth_routing_info route6;
674 	struct qeth_ipa_info ipa6;
675 	struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
676 	int fake_broadcast;
677 	int layer2;
678 	int performance_stats;
679 	int rx_sg_cb;
680 	enum qeth_ipa_isolation_modes isolation;
681 	enum qeth_ipa_isolation_modes prev_isolation;
682 	int sniffer;
683 	enum qeth_cq cq;
684 	char hsuid[9];
685 };
686 
687 /*
688  * thread bits for qeth_card thread masks
689  */
690 enum qeth_threads {
691 	QETH_RECOVER_THREAD = 1,
692 };
693 
694 struct qeth_osn_info {
695 	int (*assist_cb)(struct net_device *dev, void *data);
696 	int (*data_cb)(struct sk_buff *skb);
697 };
698 
699 enum qeth_discipline_id {
700 	QETH_DISCIPLINE_UNDETERMINED = -1,
701 	QETH_DISCIPLINE_LAYER3 = 0,
702 	QETH_DISCIPLINE_LAYER2 = 1,
703 };
704 
705 struct qeth_discipline {
706 	const struct device_type *devtype;
707 	void (*start_poll)(struct ccw_device *, int, unsigned long);
708 	qdio_handler_t *input_handler;
709 	qdio_handler_t *output_handler;
710 	int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done);
711 	int (*recover)(void *ptr);
712 	int (*setup) (struct ccwgroup_device *);
713 	void (*remove) (struct ccwgroup_device *);
714 	int (*set_online) (struct ccwgroup_device *);
715 	int (*set_offline) (struct ccwgroup_device *);
716 	int (*freeze)(struct ccwgroup_device *);
717 	int (*thaw) (struct ccwgroup_device *);
718 	int (*restore)(struct ccwgroup_device *);
719 	int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
720 	int (*control_event_handler)(struct qeth_card *card,
721 					struct qeth_ipa_cmd *cmd);
722 };
723 
724 struct qeth_vlan_vid {
725 	struct list_head list;
726 	unsigned short vid;
727 };
728 
729 enum qeth_addr_disposition {
730 	QETH_DISP_ADDR_DELETE = 0,
731 	QETH_DISP_ADDR_DO_NOTHING = 1,
732 	QETH_DISP_ADDR_ADD = 2,
733 };
734 
735 struct qeth_rx {
736 	int b_count;
737 	int b_index;
738 	struct qdio_buffer_element *b_element;
739 	int e_offset;
740 	int qdio_err;
741 };
742 
743 struct carrier_info {
744 	__u8  card_type;
745 	__u16 port_mode;
746 	__u32 port_speed;
747 };
748 
749 struct qeth_switch_info {
750 	__u32 capabilities;
751 	__u32 settings;
752 };
753 
754 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
755 
756 struct qeth_card {
757 	struct list_head list;
758 	enum qeth_card_states state;
759 	int lan_online;
760 	spinlock_t lock;
761 	struct ccwgroup_device *gdev;
762 	struct qeth_channel read;
763 	struct qeth_channel write;
764 	struct qeth_channel data;
765 
766 	struct net_device *dev;
767 	struct net_device_stats stats;
768 
769 	struct qeth_card_info info;
770 	struct qeth_token token;
771 	struct qeth_seqno seqno;
772 	struct qeth_card_options options;
773 
774 	wait_queue_head_t wait_q;
775 	spinlock_t vlanlock;
776 	spinlock_t mclock;
777 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
778 	struct list_head vid_list;
779 	DECLARE_HASHTABLE(mac_htable, 4);
780 	DECLARE_HASHTABLE(ip_htable, 4);
781 	DECLARE_HASHTABLE(ip_mc_htable, 4);
782 	struct work_struct kernel_thread_starter;
783 	spinlock_t thread_mask_lock;
784 	unsigned long thread_start_mask;
785 	unsigned long thread_allowed_mask;
786 	unsigned long thread_running_mask;
787 	struct task_struct *recovery_task;
788 	spinlock_t ip_lock;
789 	struct qeth_ipato ipato;
790 	struct list_head cmd_waiter_list;
791 	/* QDIO buffer handling */
792 	struct qeth_qdio_info qdio;
793 	struct qeth_perf_stats perf_stats;
794 	int read_or_write_problem;
795 	struct qeth_osn_info osn_info;
796 	struct qeth_discipline *discipline;
797 	atomic_t force_alloc_skb;
798 	struct service_level qeth_service_level;
799 	struct qdio_ssqd_desc ssqd;
800 	debug_info_t *debug;
801 	struct mutex conf_mutex;
802 	struct mutex discipline_mutex;
803 	struct napi_struct napi;
804 	struct qeth_rx rx;
805 	struct delayed_work buffer_reclaim_work;
806 	int reclaim_index;
807 	struct work_struct close_dev_work;
808 };
809 
810 struct qeth_card_list_struct {
811 	struct list_head list;
812 	rwlock_t rwlock;
813 };
814 
815 struct qeth_trap_id {
816 	__u16 lparnr;
817 	char vmname[8];
818 	__u8 chpid;
819 	__u8 ssid;
820 	__u16 devno;
821 } __packed;
822 
823 /*some helper functions*/
824 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
825 
826 /**
827  * qeth_get_elements_for_range() -	find number of SBALEs to cover range.
828  * @start:				Start of the address range.
829  * @end:				Address after the end of the range.
830  *
831  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
832  * the specified address range.
833  */
834 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
835 {
836 	return PFN_UP(end - 1) - PFN_DOWN(start);
837 }
838 
839 static inline int qeth_get_micros(void)
840 {
841 	return (int) (get_tod_clock() >> 12);
842 }
843 
844 static inline int qeth_get_ip_version(struct sk_buff *skb)
845 {
846 	__be16 *p = &((struct ethhdr *)skb->data)->h_proto;
847 
848 	if (be16_to_cpu(*p) == ETH_P_8021Q)
849 		p += 2;
850 	switch (be16_to_cpu(*p)) {
851 	case ETH_P_IPV6:
852 		return 6;
853 	case ETH_P_IP:
854 		return 4;
855 	default:
856 		return 0;
857 	}
858 }
859 
860 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
861 		struct qeth_buffer_pool_entry *entry)
862 {
863 	list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
864 }
865 
866 static inline int qeth_is_diagass_supported(struct qeth_card *card,
867 		enum qeth_diags_cmds cmd)
868 {
869 	return card->info.diagass_support & (__u32)cmd;
870 }
871 
872 extern struct qeth_discipline qeth_l2_discipline;
873 extern struct qeth_discipline qeth_l3_discipline;
874 extern const struct attribute_group *qeth_generic_attr_groups[];
875 extern const struct attribute_group *qeth_osn_attr_groups[];
876 extern const struct attribute_group qeth_device_attr_group;
877 extern const struct attribute_group qeth_device_blkt_group;
878 extern const struct device_type qeth_generic_devtype;
879 extern struct workqueue_struct *qeth_wq;
880 
881 int qeth_card_hw_is_reachable(struct qeth_card *);
882 const char *qeth_get_cardname_short(struct qeth_card *);
883 int qeth_realloc_buffer_pool(struct qeth_card *, int);
884 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
885 void qeth_core_free_discipline(struct qeth_card *);
886 
887 /* exports for qeth discipline device drivers */
888 extern struct qeth_card_list_struct qeth_core_card_list;
889 extern struct kmem_cache *qeth_core_header_cache;
890 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
891 
892 void qeth_set_recovery_task(struct qeth_card *);
893 void qeth_clear_recovery_task(struct qeth_card *);
894 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
895 int qeth_threads_running(struct qeth_card *, unsigned long);
896 int qeth_wait_for_threads(struct qeth_card *, unsigned long);
897 int qeth_do_run_thread(struct qeth_card *, unsigned long);
898 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
899 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
900 int qeth_core_hardsetup_card(struct qeth_card *);
901 void qeth_print_status_message(struct qeth_card *);
902 int qeth_init_qdio_queues(struct qeth_card *);
903 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
904 		  int (*reply_cb)
905 		  (struct qeth_card *, struct qeth_reply *, unsigned long),
906 		  void *);
907 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
908 			enum qeth_ipa_cmds, enum qeth_prot_versions);
909 int qeth_query_setadapterparms(struct qeth_card *);
910 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
911 		struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
912 		struct qeth_hdr **);
913 void qeth_schedule_recovery(struct qeth_card *);
914 void qeth_qdio_start_poll(struct ccw_device *, int, unsigned long);
915 int qeth_poll(struct napi_struct *napi, int budget);
916 void qeth_qdio_input_handler(struct ccw_device *,
917 		unsigned int, unsigned int, int,
918 		int, unsigned long);
919 void qeth_qdio_output_handler(struct ccw_device *, unsigned int,
920 			int, int, int, unsigned long);
921 void qeth_clear_ipacmd_list(struct qeth_card *);
922 int qeth_qdio_clear_card(struct qeth_card *, int);
923 void qeth_clear_working_pool_list(struct qeth_card *);
924 void qeth_clear_cmd_buffers(struct qeth_channel *);
925 void qeth_clear_qdio_buffers(struct qeth_card *);
926 void qeth_setadp_promisc_mode(struct qeth_card *);
927 struct net_device_stats *qeth_get_stats(struct net_device *);
928 int qeth_change_mtu(struct net_device *, int);
929 int qeth_setadpparms_change_macaddr(struct qeth_card *);
930 void qeth_tx_timeout(struct net_device *);
931 void qeth_prepare_control_data(struct qeth_card *, int,
932 				struct qeth_cmd_buffer *);
933 void qeth_release_buffer(struct qeth_channel *, struct qeth_cmd_buffer *);
934 void qeth_prepare_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, char);
935 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *);
936 int qeth_query_switch_attributes(struct qeth_card *card,
937 				  struct qeth_switch_info *sw_info);
938 int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
939 	int (*reply_cb)(struct qeth_card *, struct qeth_reply*, unsigned long),
940 	void *reply_param);
941 int qeth_bridgeport_query_ports(struct qeth_card *card,
942 	enum qeth_sbp_roles *role, enum qeth_sbp_states *state);
943 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role);
944 int qeth_bridgeport_an_set(struct qeth_card *card, int enable);
945 int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
946 int qeth_get_elements_no(struct qeth_card *card, struct sk_buff *skb,
947 			 int extra_elems, int data_offset);
948 int qeth_get_elements_for_frags(struct sk_buff *);
949 int qeth_do_send_packet_fast(struct qeth_card *card,
950 			     struct qeth_qdio_out_q *queue, struct sk_buff *skb,
951 			     struct qeth_hdr *hdr, unsigned int offset,
952 			     unsigned int hd_len);
953 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
954 			struct sk_buff *skb, struct qeth_hdr *hdr,
955 			unsigned int hd_len, unsigned int offset, int elements);
956 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
957 int qeth_core_get_sset_count(struct net_device *, int);
958 void qeth_core_get_ethtool_stats(struct net_device *,
959 				struct ethtool_stats *, u64 *);
960 void qeth_core_get_strings(struct net_device *, u32, u8 *);
961 void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
962 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
963 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
964 					 struct ethtool_link_ksettings *cmd);
965 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
966 int qeth_hdr_chk_and_bounce(struct sk_buff *, struct qeth_hdr **, int);
967 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
968 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
969 int qeth_query_ipassists(struct qeth_card *, enum qeth_prot_versions prot);
970 void qeth_trace_features(struct qeth_card *);
971 void qeth_close_dev(struct qeth_card *);
972 int qeth_send_simple_setassparms(struct qeth_card *, enum qeth_ipa_funcs,
973 				 __u16, long);
974 int qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *, __u16,
975 			  long,
976 			  int (*reply_cb)(struct qeth_card *,
977 					  struct qeth_reply *, unsigned long),
978 			  void *);
979 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
980 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *,
981 						 enum qeth_ipa_funcs,
982 						 __u16, __u16,
983 						 enum qeth_prot_versions);
984 int qeth_set_features(struct net_device *, netdev_features_t);
985 int qeth_recover_features(struct net_device *);
986 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
987 int qeth_vm_request_mac(struct qeth_card *card);
988 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len);
989 
990 /* exports for OSN */
991 int qeth_osn_assist(struct net_device *, void *, int);
992 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
993 		int (*assist_cb)(struct net_device *, void *),
994 		int (*data_cb)(struct sk_buff *));
995 void qeth_osn_deregister(struct net_device *);
996 
997 #endif /* __QETH_CORE_H__ */
998