xref: /openbmc/linux/drivers/s390/net/qeth_core.h (revision 68198dca)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  *    Copyright IBM Corp. 2007
4  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5  *		 Frank Pavlic <fpavlic@de.ibm.com>,
6  *		 Thomas Spatzier <tspat@de.ibm.com>,
7  *		 Frank Blaschka <frank.blaschka@de.ibm.com>
8  */
9 
10 #ifndef __QETH_CORE_H__
11 #define __QETH_CORE_H__
12 
13 #include <linux/if.h>
14 #include <linux/if_arp.h>
15 #include <linux/etherdevice.h>
16 #include <linux/if_vlan.h>
17 #include <linux/ctype.h>
18 #include <linux/in6.h>
19 #include <linux/bitops.h>
20 #include <linux/seq_file.h>
21 #include <linux/ethtool.h>
22 #include <linux/hashtable.h>
23 #include <linux/ip.h>
24 
25 #include <net/ipv6.h>
26 #include <net/if_inet6.h>
27 #include <net/addrconf.h>
28 
29 #include <asm/debug.h>
30 #include <asm/qdio.h>
31 #include <asm/ccwdev.h>
32 #include <asm/ccwgroup.h>
33 #include <asm/sysinfo.h>
34 
35 #include "qeth_core_mpc.h"
36 
37 /**
38  * Debug Facility stuff
39  */
40 enum qeth_dbf_names {
41 	QETH_DBF_SETUP,
42 	QETH_DBF_MSG,
43 	QETH_DBF_CTRL,
44 	QETH_DBF_INFOS	/* must be last element */
45 };
46 
47 struct qeth_dbf_info {
48 	char name[DEBUG_MAX_NAME_LEN];
49 	int pages;
50 	int areas;
51 	int len;
52 	int level;
53 	struct debug_view *view;
54 	debug_info_t *id;
55 };
56 
57 #define QETH_DBF_CTRL_LEN 256
58 
59 #define QETH_DBF_TEXT(name, level, text) \
60 	debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
61 
62 #define QETH_DBF_HEX(name, level, addr, len) \
63 	debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
64 
65 #define QETH_DBF_MESSAGE(level, text...) \
66 	debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
67 
68 #define QETH_DBF_TEXT_(name, level, text...) \
69 	qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
70 
71 #define QETH_CARD_TEXT(card, level, text) \
72 	debug_text_event(card->debug, level, text)
73 
74 #define QETH_CARD_HEX(card, level, addr, len) \
75 	debug_event(card->debug, level, (void *)(addr), len)
76 
77 #define QETH_CARD_MESSAGE(card, text...) \
78 	debug_sprintf_event(card->debug, level, text)
79 
80 #define QETH_CARD_TEXT_(card, level, text...) \
81 	qeth_dbf_longtext(card->debug, level, text)
82 
83 #define SENSE_COMMAND_REJECT_BYTE 0
84 #define SENSE_COMMAND_REJECT_FLAG 0x80
85 #define SENSE_RESETTING_EVENT_BYTE 1
86 #define SENSE_RESETTING_EVENT_FLAG 0x80
87 
88 /*
89  * Common IO related definitions
90  */
91 #define CARD_RDEV(card) card->read.ccwdev
92 #define CARD_WDEV(card) card->write.ccwdev
93 #define CARD_DDEV(card) card->data.ccwdev
94 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
95 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
96 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
97 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
98 #define CHANNEL_ID(channel) dev_name(&channel->ccwdev->dev)
99 
100 /**
101  * card stuff
102  */
103 struct qeth_perf_stats {
104 	unsigned int bufs_rec;
105 	unsigned int bufs_sent;
106 
107 	unsigned int skbs_sent_pack;
108 	unsigned int bufs_sent_pack;
109 
110 	unsigned int sc_dp_p;
111 	unsigned int sc_p_dp;
112 	/* qdio_cq_handler: number of times called, time spent in */
113 	__u64 cq_start_time;
114 	unsigned int cq_cnt;
115 	unsigned int cq_time;
116 	/* qdio_input_handler: number of times called, time spent in */
117 	__u64 inbound_start_time;
118 	unsigned int inbound_cnt;
119 	unsigned int inbound_time;
120 	/* qeth_send_packet: number of times called, time spent in */
121 	__u64 outbound_start_time;
122 	unsigned int outbound_cnt;
123 	unsigned int outbound_time;
124 	/* qdio_output_handler: number of times called, time spent in */
125 	__u64 outbound_handler_start_time;
126 	unsigned int outbound_handler_cnt;
127 	unsigned int outbound_handler_time;
128 	/* number of calls to and time spent in do_QDIO for inbound queue */
129 	__u64 inbound_do_qdio_start_time;
130 	unsigned int inbound_do_qdio_cnt;
131 	unsigned int inbound_do_qdio_time;
132 	/* number of calls to and time spent in do_QDIO for outbound queues */
133 	__u64 outbound_do_qdio_start_time;
134 	unsigned int outbound_do_qdio_cnt;
135 	unsigned int outbound_do_qdio_time;
136 	unsigned int large_send_bytes;
137 	unsigned int large_send_cnt;
138 	unsigned int sg_skbs_sent;
139 	unsigned int sg_frags_sent;
140 	/* initial values when measuring starts */
141 	unsigned long initial_rx_packets;
142 	unsigned long initial_tx_packets;
143 	/* inbound scatter gather data */
144 	unsigned int sg_skbs_rx;
145 	unsigned int sg_frags_rx;
146 	unsigned int sg_alloc_page_rx;
147 	unsigned int tx_csum;
148 	unsigned int tx_lin;
149 	unsigned int tx_linfail;
150 };
151 
152 /* Routing stuff */
153 struct qeth_routing_info {
154 	enum qeth_routing_types type;
155 };
156 
157 /* IPA stuff */
158 struct qeth_ipa_info {
159 	__u32 supported_funcs;
160 	__u32 enabled_funcs;
161 };
162 
163 /* SETBRIDGEPORT stuff */
164 enum qeth_sbp_roles {
165 	QETH_SBP_ROLE_NONE	= 0,
166 	QETH_SBP_ROLE_PRIMARY	= 1,
167 	QETH_SBP_ROLE_SECONDARY	= 2,
168 };
169 
170 enum qeth_sbp_states {
171 	QETH_SBP_STATE_INACTIVE	= 0,
172 	QETH_SBP_STATE_STANDBY	= 1,
173 	QETH_SBP_STATE_ACTIVE	= 2,
174 };
175 
176 #define QETH_SBP_HOST_NOTIFICATION 1
177 
178 struct qeth_sbp_info {
179 	__u32 supported_funcs;
180 	enum qeth_sbp_roles role;
181 	__u32 hostnotification:1;
182 	__u32 reflect_promisc:1;
183 	__u32 reflect_promisc_primary:1;
184 };
185 
186 struct qeth_vnicc_info {
187 	/* supported/currently configured VNICCs; updated in IPA exchanges */
188 	u32 sup_chars;
189 	u32 cur_chars;
190 	/* supported commands: bitmasks which VNICCs support respective cmd */
191 	u32 set_char_sup;
192 	u32 getset_timeout_sup;
193 	/* timeout value for the learning characteristic */
194 	u32 learning_timeout;
195 	/* characteristics wanted/configured by user */
196 	u32 wanted_chars;
197 	/* has user explicitly enabled rx_bcast while online? */
198 	bool rx_bcast_enabled;
199 };
200 
201 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
202 		enum qeth_ipa_funcs func)
203 {
204 	return (ipa->supported_funcs & func);
205 }
206 
207 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
208 		enum qeth_ipa_funcs func)
209 {
210 	return (ipa->supported_funcs & ipa->enabled_funcs & func);
211 }
212 
213 #define qeth_adp_supported(c, f) \
214 	qeth_is_ipa_supported(&c->options.adp, f)
215 #define qeth_adp_enabled(c, f) \
216 	qeth_is_ipa_enabled(&c->options.adp, f)
217 #define qeth_is_supported(c, f) \
218 	qeth_is_ipa_supported(&c->options.ipa4, f)
219 #define qeth_is_enabled(c, f) \
220 	qeth_is_ipa_enabled(&c->options.ipa4, f)
221 #define qeth_is_supported6(c, f) \
222 	qeth_is_ipa_supported(&c->options.ipa6, f)
223 #define qeth_is_enabled6(c, f) \
224 	qeth_is_ipa_enabled(&c->options.ipa6, f)
225 #define qeth_is_ipafunc_supported(c, prot, f) \
226 	 ((prot == QETH_PROT_IPV6) ? \
227 		qeth_is_supported6(c, f) : qeth_is_supported(c, f))
228 #define qeth_is_ipafunc_enabled(c, prot, f) \
229 	 ((prot == QETH_PROT_IPV6) ? \
230 		qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
231 
232 #define QETH_IDX_FUNC_LEVEL_OSD		 0x0101
233 #define QETH_IDX_FUNC_LEVEL_IQD		 0x4108
234 
235 #define QETH_REAL_CARD		1
236 #define QETH_VLAN_CARD		2
237 #define QETH_BUFSIZE		4096
238 
239 /**
240  * some more defs
241  */
242 #define QETH_TX_TIMEOUT		100 * HZ
243 #define QETH_RCD_TIMEOUT	60 * HZ
244 #define QETH_RECLAIM_WORK_TIME	HZ
245 #define QETH_MAX_PORTNO		15
246 
247 /*IPv6 address autoconfiguration stuff*/
248 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
249 #define UNIQUE_ID_NOT_BY_CARD		0x10000
250 
251 /*****************************************************************************/
252 /* QDIO queue and buffer handling                                            */
253 /*****************************************************************************/
254 #define QETH_MAX_QUEUES 4
255 #define QETH_IN_BUF_SIZE_DEFAULT 65536
256 #define QETH_IN_BUF_COUNT_DEFAULT 64
257 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
258 #define QETH_IN_BUF_COUNT_MIN 8
259 #define QETH_IN_BUF_COUNT_MAX 128
260 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
261 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
262 		 ((card)->qdio.in_buf_pool.buf_count / 2)
263 
264 /* buffers we have to be behind before we get a PCI */
265 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
266 /*enqueued free buffers left before we get a PCI*/
267 #define QETH_PCI_THRESHOLD_B(card) 0
268 /*not used unless the microcode gets patched*/
269 #define QETH_PCI_TIMER_VALUE(card) 3
270 
271 /* priority queing */
272 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
273 #define QETH_DEFAULT_QUEUE    2
274 #define QETH_NO_PRIO_QUEUEING 0
275 #define QETH_PRIO_Q_ING_PREC  1
276 #define QETH_PRIO_Q_ING_TOS   2
277 #define QETH_PRIO_Q_ING_SKB   3
278 #define QETH_PRIO_Q_ING_VLAN  4
279 
280 /* Packing */
281 #define QETH_LOW_WATERMARK_PACK  2
282 #define QETH_HIGH_WATERMARK_PACK 5
283 #define QETH_WATERMARK_PACK_FUZZ 1
284 
285 /* large receive scatter gather copy break */
286 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
287 #define QETH_RX_PULL_LEN 256
288 
289 struct qeth_hdr_layer3 {
290 	__u8  id;
291 	__u8  flags;
292 	__u16 inbound_checksum; /*TSO:__u16 seqno */
293 	__u32 token;		/*TSO: __u32 reserved */
294 	__u16 length;
295 	__u8  vlan_prio;
296 	__u8  ext_flags;
297 	__u16 vlan_id;
298 	__u16 frame_offset;
299 	__u8  dest_addr[16];
300 } __attribute__ ((packed));
301 
302 struct qeth_hdr_layer2 {
303 	__u8 id;
304 	__u8 flags[3];
305 	__u8 port_no;
306 	__u8 hdr_length;
307 	__u16 pkt_length;
308 	__u16 seq_no;
309 	__u16 vlan_id;
310 	__u32 reserved;
311 	__u8 reserved2[16];
312 } __attribute__ ((packed));
313 
314 struct qeth_hdr_osn {
315 	__u8 id;
316 	__u8 reserved;
317 	__u16 seq_no;
318 	__u16 reserved2;
319 	__u16 control_flags;
320 	__u16 pdu_length;
321 	__u8 reserved3[18];
322 	__u32 ccid;
323 } __attribute__ ((packed));
324 
325 struct qeth_hdr {
326 	union {
327 		struct qeth_hdr_layer2 l2;
328 		struct qeth_hdr_layer3 l3;
329 		struct qeth_hdr_osn    osn;
330 	} hdr;
331 } __attribute__ ((packed));
332 
333 /*TCP Segmentation Offload header*/
334 struct qeth_hdr_ext_tso {
335 	__u16 hdr_tot_len;
336 	__u8  imb_hdr_no;
337 	__u8  reserved;
338 	__u8  hdr_type;
339 	__u8  hdr_version;
340 	__u16 hdr_len;
341 	__u32 payload_len;
342 	__u16 mss;
343 	__u16 dg_hdr_len;
344 	__u8  padding[16];
345 } __attribute__ ((packed));
346 
347 struct qeth_hdr_tso {
348 	struct qeth_hdr hdr;	/*hdr->hdr.l3.xxx*/
349 	struct qeth_hdr_ext_tso ext;
350 } __attribute__ ((packed));
351 
352 
353 /* flags for qeth_hdr.flags */
354 #define QETH_HDR_PASSTHRU 0x10
355 #define QETH_HDR_IPV6     0x80
356 #define QETH_HDR_CAST_MASK 0x07
357 enum qeth_cast_flags {
358 	QETH_CAST_UNICAST   = 0x06,
359 	QETH_CAST_MULTICAST = 0x04,
360 	QETH_CAST_BROADCAST = 0x05,
361 	QETH_CAST_ANYCAST   = 0x07,
362 	QETH_CAST_NOCAST    = 0x00,
363 };
364 
365 enum qeth_layer2_frame_flags {
366 	QETH_LAYER2_FLAG_MULTICAST = 0x01,
367 	QETH_LAYER2_FLAG_BROADCAST = 0x02,
368 	QETH_LAYER2_FLAG_UNICAST   = 0x04,
369 	QETH_LAYER2_FLAG_VLAN      = 0x10,
370 };
371 
372 enum qeth_header_ids {
373 	QETH_HEADER_TYPE_LAYER3 = 0x01,
374 	QETH_HEADER_TYPE_LAYER2 = 0x02,
375 	QETH_HEADER_TYPE_TSO	= 0x03,
376 	QETH_HEADER_TYPE_OSN    = 0x04,
377 };
378 /* flags for qeth_hdr.ext_flags */
379 #define QETH_HDR_EXT_VLAN_FRAME       0x01
380 #define QETH_HDR_EXT_TOKEN_ID         0x02
381 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
382 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
383 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
384 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
385 #define QETH_HDR_EXT_UDP	      0x40 /*bit off for TCP*/
386 
387 enum qeth_qdio_buffer_states {
388 	/*
389 	 * inbound: read out by driver; owned by hardware in order to be filled
390 	 * outbound: owned by driver in order to be filled
391 	 */
392 	QETH_QDIO_BUF_EMPTY,
393 	/*
394 	 * inbound: filled by hardware; owned by driver in order to be read out
395 	 * outbound: filled by driver; owned by hardware in order to be sent
396 	 */
397 	QETH_QDIO_BUF_PRIMED,
398 	/*
399 	 * inbound: not applicable
400 	 * outbound: identified to be pending in TPQ
401 	 */
402 	QETH_QDIO_BUF_PENDING,
403 	/*
404 	 * inbound: not applicable
405 	 * outbound: found in completion queue
406 	 */
407 	QETH_QDIO_BUF_IN_CQ,
408 	/*
409 	 * inbound: not applicable
410 	 * outbound: handled via transfer pending / completion queue
411 	 */
412 	QETH_QDIO_BUF_HANDLED_DELAYED,
413 };
414 
415 enum qeth_qdio_info_states {
416 	QETH_QDIO_UNINITIALIZED,
417 	QETH_QDIO_ALLOCATED,
418 	QETH_QDIO_ESTABLISHED,
419 	QETH_QDIO_CLEANING
420 };
421 
422 struct qeth_buffer_pool_entry {
423 	struct list_head list;
424 	struct list_head init_list;
425 	void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
426 };
427 
428 struct qeth_qdio_buffer_pool {
429 	struct list_head entry_list;
430 	int buf_count;
431 };
432 
433 struct qeth_qdio_buffer {
434 	struct qdio_buffer *buffer;
435 	/* the buffer pool entry currently associated to this buffer */
436 	struct qeth_buffer_pool_entry *pool_entry;
437 	struct sk_buff *rx_skb;
438 };
439 
440 struct qeth_qdio_q {
441 	struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
442 	struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
443 	int next_buf_to_init;
444 };
445 
446 struct qeth_qdio_out_buffer {
447 	struct qdio_buffer *buffer;
448 	atomic_t state;
449 	int next_element_to_fill;
450 	struct sk_buff_head skb_list;
451 	int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
452 
453 	struct qaob *aob;
454 	struct qeth_qdio_out_q *q;
455 	struct qeth_qdio_out_buffer *next_pending;
456 };
457 
458 struct qeth_card;
459 
460 enum qeth_out_q_states {
461        QETH_OUT_Q_UNLOCKED,
462        QETH_OUT_Q_LOCKED,
463        QETH_OUT_Q_LOCKED_FLUSH,
464 };
465 
466 struct qeth_qdio_out_q {
467 	struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
468 	struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
469 	struct qdio_outbuf_state *bufstates; /* convenience pointer */
470 	int queue_no;
471 	struct qeth_card *card;
472 	atomic_t state;
473 	int do_pack;
474 	/*
475 	 * index of buffer to be filled by driver; state EMPTY or PACKING
476 	 */
477 	int next_buf_to_fill;
478 	/*
479 	 * number of buffers that are currently filled (PRIMED)
480 	 * -> these buffers are hardware-owned
481 	 */
482 	atomic_t used_buffers;
483 	/* indicates whether PCI flag must be set (or if one is outstanding) */
484 	atomic_t set_pci_flags_count;
485 };
486 
487 struct qeth_qdio_info {
488 	atomic_t state;
489 	/* input */
490 	int no_in_queues;
491 	struct qeth_qdio_q *in_q;
492 	struct qeth_qdio_q *c_q;
493 	struct qeth_qdio_buffer_pool in_buf_pool;
494 	struct qeth_qdio_buffer_pool init_pool;
495 	int in_buf_size;
496 
497 	/* output */
498 	int no_out_queues;
499 	struct qeth_qdio_out_q **out_qs;
500 	struct qdio_outbuf_state *out_bufstates;
501 
502 	/* priority queueing */
503 	int do_prio_queueing;
504 	int default_out_queue;
505 };
506 
507 #define QETH_ETH_MAC_V4      0x0100 /* like v4 */
508 #define QETH_ETH_MAC_V6      0x3333 /* like v6 */
509 /* tr mc mac is longer, but that will be enough to detect mc frames */
510 #define QETH_TR_MAC_NC       0xc000 /* non-canonical */
511 #define QETH_TR_MAC_C        0x0300 /* canonical */
512 
513 /**
514  * buffer stuff for read channel
515  */
516 #define QETH_CMD_BUFFER_NO	8
517 
518 /**
519  *  channel state machine
520  */
521 enum qeth_channel_states {
522 	CH_STATE_UP,
523 	CH_STATE_DOWN,
524 	CH_STATE_ACTIVATING,
525 	CH_STATE_HALTED,
526 	CH_STATE_STOPPED,
527 	CH_STATE_RCD,
528 	CH_STATE_RCD_DONE,
529 };
530 /**
531  * card state machine
532  */
533 enum qeth_card_states {
534 	CARD_STATE_DOWN,
535 	CARD_STATE_HARDSETUP,
536 	CARD_STATE_SOFTSETUP,
537 	CARD_STATE_UP,
538 	CARD_STATE_RECOVER,
539 };
540 
541 /**
542  * Protocol versions
543  */
544 enum qeth_prot_versions {
545 	QETH_PROT_IPV4 = 0x0004,
546 	QETH_PROT_IPV6 = 0x0006,
547 };
548 
549 enum qeth_ip_types {
550 	QETH_IP_TYPE_NORMAL,
551 	QETH_IP_TYPE_VIPA,
552 	QETH_IP_TYPE_RXIP,
553 };
554 
555 enum qeth_cmd_buffer_state {
556 	BUF_STATE_FREE,
557 	BUF_STATE_LOCKED,
558 	BUF_STATE_PROCESSED,
559 };
560 
561 enum qeth_cq {
562 	QETH_CQ_DISABLED = 0,
563 	QETH_CQ_ENABLED = 1,
564 	QETH_CQ_NOTAVAILABLE = 2,
565 };
566 
567 struct qeth_ipato {
568 	bool enabled;
569 	bool invert4;
570 	bool invert6;
571 	struct list_head entries;
572 };
573 
574 struct qeth_channel;
575 
576 struct qeth_cmd_buffer {
577 	enum qeth_cmd_buffer_state state;
578 	struct qeth_channel *channel;
579 	unsigned char *data;
580 	int rc;
581 	void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
582 };
583 
584 /**
585  * definition of a qeth channel, used for read and write
586  */
587 struct qeth_channel {
588 	enum qeth_channel_states state;
589 	struct ccw1 ccw;
590 	spinlock_t iob_lock;
591 	wait_queue_head_t wait_q;
592 	struct ccw_device *ccwdev;
593 /*command buffer for control data*/
594 	struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
595 	atomic_t irq_pending;
596 	int io_buf_no;
597 	int buf_no;
598 };
599 
600 /**
601  *  OSA card related definitions
602  */
603 struct qeth_token {
604 	__u32 issuer_rm_w;
605 	__u32 issuer_rm_r;
606 	__u32 cm_filter_w;
607 	__u32 cm_filter_r;
608 	__u32 cm_connection_w;
609 	__u32 cm_connection_r;
610 	__u32 ulp_filter_w;
611 	__u32 ulp_filter_r;
612 	__u32 ulp_connection_w;
613 	__u32 ulp_connection_r;
614 };
615 
616 struct qeth_seqno {
617 	__u32 trans_hdr;
618 	__u32 pdu_hdr;
619 	__u32 pdu_hdr_ack;
620 	__u16 ipa;
621 	__u32 pkt_seqno;
622 };
623 
624 struct qeth_reply {
625 	struct list_head list;
626 	wait_queue_head_t wait_q;
627 	int (*callback)(struct qeth_card *, struct qeth_reply *,
628 		unsigned long);
629 	u32 seqno;
630 	unsigned long offset;
631 	atomic_t received;
632 	int rc;
633 	void *param;
634 	struct qeth_card *card;
635 	atomic_t refcnt;
636 };
637 
638 struct qeth_card_blkt {
639 	int time_total;
640 	int inter_packet;
641 	int inter_packet_jumbo;
642 };
643 
644 #define QETH_BROADCAST_WITH_ECHO    0x01
645 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
646 #define QETH_LAYER2_MAC_READ	    0x01
647 #define QETH_LAYER2_MAC_REGISTERED  0x02
648 struct qeth_card_info {
649 	unsigned short unit_addr2;
650 	unsigned short cula;
651 	unsigned short chpid;
652 	__u16 func_level;
653 	char mcl_level[QETH_MCL_LENGTH + 1];
654 	int guestlan;
655 	int mac_bits;
656 	int portno;
657 	enum qeth_card_types type;
658 	enum qeth_link_types link_type;
659 	int is_multicast_different;
660 	int initial_mtu;
661 	int max_mtu;
662 	int broadcast_capable;
663 	int unique_id;
664 	bool layer_enforced;
665 	struct qeth_card_blkt blkt;
666 	enum qeth_ipa_promisc_modes promisc_mode;
667 	__u32 diagass_support;
668 	__u32 hwtrap;
669 };
670 
671 struct qeth_card_options {
672 	struct qeth_routing_info route4;
673 	struct qeth_ipa_info ipa4;
674 	struct qeth_ipa_info adp; /*Adapter parameters*/
675 	struct qeth_routing_info route6;
676 	struct qeth_ipa_info ipa6;
677 	struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
678 	struct qeth_vnicc_info vnicc; /* VNICC options */
679 	int fake_broadcast;
680 	int layer2;
681 	int performance_stats;
682 	int rx_sg_cb;
683 	enum qeth_ipa_isolation_modes isolation;
684 	enum qeth_ipa_isolation_modes prev_isolation;
685 	int sniffer;
686 	enum qeth_cq cq;
687 	char hsuid[9];
688 };
689 
690 /*
691  * thread bits for qeth_card thread masks
692  */
693 enum qeth_threads {
694 	QETH_RECOVER_THREAD = 1,
695 };
696 
697 struct qeth_osn_info {
698 	int (*assist_cb)(struct net_device *dev, void *data);
699 	int (*data_cb)(struct sk_buff *skb);
700 };
701 
702 enum qeth_discipline_id {
703 	QETH_DISCIPLINE_UNDETERMINED = -1,
704 	QETH_DISCIPLINE_LAYER3 = 0,
705 	QETH_DISCIPLINE_LAYER2 = 1,
706 };
707 
708 struct qeth_discipline {
709 	const struct device_type *devtype;
710 	void (*start_poll)(struct ccw_device *, int, unsigned long);
711 	qdio_handler_t *input_handler;
712 	qdio_handler_t *output_handler;
713 	int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done);
714 	int (*recover)(void *ptr);
715 	int (*setup) (struct ccwgroup_device *);
716 	void (*remove) (struct ccwgroup_device *);
717 	int (*set_online) (struct ccwgroup_device *);
718 	int (*set_offline) (struct ccwgroup_device *);
719 	int (*freeze)(struct ccwgroup_device *);
720 	int (*thaw) (struct ccwgroup_device *);
721 	int (*restore)(struct ccwgroup_device *);
722 	int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
723 	int (*control_event_handler)(struct qeth_card *card,
724 					struct qeth_ipa_cmd *cmd);
725 };
726 
727 struct qeth_vlan_vid {
728 	struct list_head list;
729 	unsigned short vid;
730 };
731 
732 enum qeth_addr_disposition {
733 	QETH_DISP_ADDR_DELETE = 0,
734 	QETH_DISP_ADDR_DO_NOTHING = 1,
735 	QETH_DISP_ADDR_ADD = 2,
736 };
737 
738 struct qeth_rx {
739 	int b_count;
740 	int b_index;
741 	struct qdio_buffer_element *b_element;
742 	int e_offset;
743 	int qdio_err;
744 };
745 
746 struct carrier_info {
747 	__u8  card_type;
748 	__u16 port_mode;
749 	__u32 port_speed;
750 };
751 
752 struct qeth_switch_info {
753 	__u32 capabilities;
754 	__u32 settings;
755 };
756 
757 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
758 
759 struct qeth_card {
760 	struct list_head list;
761 	enum qeth_card_states state;
762 	int lan_online;
763 	spinlock_t lock;
764 	struct ccwgroup_device *gdev;
765 	struct qeth_channel read;
766 	struct qeth_channel write;
767 	struct qeth_channel data;
768 
769 	struct net_device *dev;
770 	struct net_device_stats stats;
771 
772 	struct qeth_card_info info;
773 	struct qeth_token token;
774 	struct qeth_seqno seqno;
775 	struct qeth_card_options options;
776 
777 	wait_queue_head_t wait_q;
778 	spinlock_t vlanlock;
779 	spinlock_t mclock;
780 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
781 	struct list_head vid_list;
782 	DECLARE_HASHTABLE(mac_htable, 4);
783 	DECLARE_HASHTABLE(ip_htable, 4);
784 	DECLARE_HASHTABLE(ip_mc_htable, 4);
785 	struct work_struct kernel_thread_starter;
786 	spinlock_t thread_mask_lock;
787 	unsigned long thread_start_mask;
788 	unsigned long thread_allowed_mask;
789 	unsigned long thread_running_mask;
790 	struct task_struct *recovery_task;
791 	spinlock_t ip_lock;
792 	struct qeth_ipato ipato;
793 	struct list_head cmd_waiter_list;
794 	/* QDIO buffer handling */
795 	struct qeth_qdio_info qdio;
796 	struct qeth_perf_stats perf_stats;
797 	int read_or_write_problem;
798 	struct qeth_osn_info osn_info;
799 	struct qeth_discipline *discipline;
800 	atomic_t force_alloc_skb;
801 	struct service_level qeth_service_level;
802 	struct qdio_ssqd_desc ssqd;
803 	debug_info_t *debug;
804 	struct mutex conf_mutex;
805 	struct mutex discipline_mutex;
806 	struct napi_struct napi;
807 	struct qeth_rx rx;
808 	struct delayed_work buffer_reclaim_work;
809 	int reclaim_index;
810 	struct work_struct close_dev_work;
811 };
812 
813 struct qeth_card_list_struct {
814 	struct list_head list;
815 	rwlock_t rwlock;
816 };
817 
818 struct qeth_trap_id {
819 	__u16 lparnr;
820 	char vmname[8];
821 	__u8 chpid;
822 	__u8 ssid;
823 	__u16 devno;
824 } __packed;
825 
826 /*some helper functions*/
827 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
828 
829 /**
830  * qeth_get_elements_for_range() -	find number of SBALEs to cover range.
831  * @start:				Start of the address range.
832  * @end:				Address after the end of the range.
833  *
834  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
835  * the specified address range.
836  */
837 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
838 {
839 	return PFN_UP(end - 1) - PFN_DOWN(start);
840 }
841 
842 static inline int qeth_get_micros(void)
843 {
844 	return (int) (get_tod_clock() >> 12);
845 }
846 
847 static inline int qeth_get_ip_version(struct sk_buff *skb)
848 {
849 	__be16 *p = &((struct ethhdr *)skb->data)->h_proto;
850 
851 	if (be16_to_cpu(*p) == ETH_P_8021Q)
852 		p += 2;
853 	switch (be16_to_cpu(*p)) {
854 	case ETH_P_IPV6:
855 		return 6;
856 	case ETH_P_IP:
857 		return 4;
858 	default:
859 		return 0;
860 	}
861 }
862 
863 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
864 		struct qeth_buffer_pool_entry *entry)
865 {
866 	list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
867 }
868 
869 static inline int qeth_is_diagass_supported(struct qeth_card *card,
870 		enum qeth_diags_cmds cmd)
871 {
872 	return card->info.diagass_support & (__u32)cmd;
873 }
874 
875 extern struct qeth_discipline qeth_l2_discipline;
876 extern struct qeth_discipline qeth_l3_discipline;
877 extern const struct attribute_group *qeth_generic_attr_groups[];
878 extern const struct attribute_group *qeth_osn_attr_groups[];
879 extern const struct attribute_group qeth_device_attr_group;
880 extern const struct attribute_group qeth_device_blkt_group;
881 extern const struct device_type qeth_generic_devtype;
882 extern struct workqueue_struct *qeth_wq;
883 
884 int qeth_card_hw_is_reachable(struct qeth_card *);
885 const char *qeth_get_cardname_short(struct qeth_card *);
886 int qeth_realloc_buffer_pool(struct qeth_card *, int);
887 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
888 void qeth_core_free_discipline(struct qeth_card *);
889 
890 /* exports for qeth discipline device drivers */
891 extern struct qeth_card_list_struct qeth_core_card_list;
892 extern struct kmem_cache *qeth_core_header_cache;
893 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
894 
895 void qeth_set_recovery_task(struct qeth_card *);
896 void qeth_clear_recovery_task(struct qeth_card *);
897 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
898 int qeth_threads_running(struct qeth_card *, unsigned long);
899 int qeth_wait_for_threads(struct qeth_card *, unsigned long);
900 int qeth_do_run_thread(struct qeth_card *, unsigned long);
901 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
902 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
903 int qeth_core_hardsetup_card(struct qeth_card *);
904 void qeth_print_status_message(struct qeth_card *);
905 int qeth_init_qdio_queues(struct qeth_card *);
906 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
907 		  int (*reply_cb)
908 		  (struct qeth_card *, struct qeth_reply *, unsigned long),
909 		  void *);
910 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
911 			enum qeth_ipa_cmds, enum qeth_prot_versions);
912 int qeth_query_setadapterparms(struct qeth_card *);
913 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
914 		struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
915 		struct qeth_hdr **);
916 void qeth_schedule_recovery(struct qeth_card *);
917 void qeth_qdio_start_poll(struct ccw_device *, int, unsigned long);
918 int qeth_poll(struct napi_struct *napi, int budget);
919 void qeth_qdio_input_handler(struct ccw_device *,
920 		unsigned int, unsigned int, int,
921 		int, unsigned long);
922 void qeth_qdio_output_handler(struct ccw_device *, unsigned int,
923 			int, int, int, unsigned long);
924 void qeth_clear_ipacmd_list(struct qeth_card *);
925 int qeth_qdio_clear_card(struct qeth_card *, int);
926 void qeth_clear_working_pool_list(struct qeth_card *);
927 void qeth_clear_cmd_buffers(struct qeth_channel *);
928 void qeth_clear_qdio_buffers(struct qeth_card *);
929 void qeth_setadp_promisc_mode(struct qeth_card *);
930 struct net_device_stats *qeth_get_stats(struct net_device *);
931 int qeth_change_mtu(struct net_device *, int);
932 int qeth_setadpparms_change_macaddr(struct qeth_card *);
933 void qeth_tx_timeout(struct net_device *);
934 void qeth_prepare_control_data(struct qeth_card *, int,
935 				struct qeth_cmd_buffer *);
936 void qeth_release_buffer(struct qeth_channel *, struct qeth_cmd_buffer *);
937 void qeth_prepare_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, char);
938 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *);
939 int qeth_query_switch_attributes(struct qeth_card *card,
940 				  struct qeth_switch_info *sw_info);
941 int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
942 	int (*reply_cb)(struct qeth_card *, struct qeth_reply*, unsigned long),
943 	void *reply_param);
944 int qeth_bridgeport_query_ports(struct qeth_card *card,
945 	enum qeth_sbp_roles *role, enum qeth_sbp_states *state);
946 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role);
947 int qeth_bridgeport_an_set(struct qeth_card *card, int enable);
948 int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
949 int qeth_get_elements_no(struct qeth_card *card, struct sk_buff *skb,
950 			 int extra_elems, int data_offset);
951 int qeth_get_elements_for_frags(struct sk_buff *);
952 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
953 			     struct qeth_hdr *hdr, unsigned int offset,
954 			     unsigned int hd_len);
955 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
956 			struct sk_buff *skb, struct qeth_hdr *hdr,
957 			unsigned int offset, unsigned int hd_len,
958 			int elements_needed);
959 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
960 int qeth_core_get_sset_count(struct net_device *, int);
961 void qeth_core_get_ethtool_stats(struct net_device *,
962 				struct ethtool_stats *, u64 *);
963 void qeth_core_get_strings(struct net_device *, u32, u8 *);
964 void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
965 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
966 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
967 					 struct ethtool_link_ksettings *cmd);
968 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
969 int qeth_hdr_chk_and_bounce(struct sk_buff *, struct qeth_hdr **, int);
970 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
971 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
972 int qeth_query_ipassists(struct qeth_card *, enum qeth_prot_versions prot);
973 void qeth_trace_features(struct qeth_card *);
974 void qeth_close_dev(struct qeth_card *);
975 int qeth_send_simple_setassparms(struct qeth_card *, enum qeth_ipa_funcs,
976 				 __u16, long);
977 int qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *, __u16,
978 			  long,
979 			  int (*reply_cb)(struct qeth_card *,
980 					  struct qeth_reply *, unsigned long),
981 			  void *);
982 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
983 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *,
984 						 enum qeth_ipa_funcs,
985 						 __u16, __u16,
986 						 enum qeth_prot_versions);
987 int qeth_set_features(struct net_device *, netdev_features_t);
988 void qeth_recover_features(struct net_device *dev);
989 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
990 netdev_features_t qeth_features_check(struct sk_buff *skb,
991 				      struct net_device *dev,
992 				      netdev_features_t features);
993 int qeth_vm_request_mac(struct qeth_card *card);
994 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len);
995 
996 /* exports for OSN */
997 int qeth_osn_assist(struct net_device *, void *, int);
998 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
999 		int (*assist_cb)(struct net_device *, void *),
1000 		int (*data_cb)(struct sk_buff *));
1001 void qeth_osn_deregister(struct net_device *);
1002 
1003 #endif /* __QETH_CORE_H__ */
1004