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/completion.h>
14 #include <linux/if.h>
15 #include <linux/if_arp.h>
16 #include <linux/etherdevice.h>
17 #include <linux/if_vlan.h>
18 #include <linux/ctype.h>
19 #include <linux/in6.h>
20 #include <linux/bitops.h>
21 #include <linux/seq_file.h>
22 #include <linux/hashtable.h>
23 #include <linux/ip.h>
24 #include <linux/refcount.h>
25 #include <linux/timer.h>
26 #include <linux/wait.h>
27 #include <linux/workqueue.h>
28
29 #include <net/dst.h>
30 #include <net/ip6_fib.h>
31 #include <net/ipv6.h>
32 #include <net/if_inet6.h>
33 #include <net/addrconf.h>
34 #include <net/sch_generic.h>
35 #include <net/tcp.h>
36
37 #include <asm/debug.h>
38 #include <asm/qdio.h>
39 #include <asm/ccwdev.h>
40 #include <asm/ccwgroup.h>
41 #include <asm/sysinfo.h>
42
43 #include <uapi/linux/if_link.h>
44
45 #include "qeth_core_mpc.h"
46
47 /**
48 * Debug Facility stuff
49 */
50 enum qeth_dbf_names {
51 QETH_DBF_SETUP,
52 QETH_DBF_MSG,
53 QETH_DBF_CTRL,
54 QETH_DBF_INFOS /* must be last element */
55 };
56
57 struct qeth_dbf_info {
58 char name[DEBUG_MAX_NAME_LEN];
59 int pages;
60 int areas;
61 int len;
62 int level;
63 struct debug_view *view;
64 debug_info_t *id;
65 };
66
67 #define QETH_DBF_CTRL_LEN 256U
68
69 #define QETH_DBF_TEXT(name, level, text) \
70 debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
71
72 #define QETH_DBF_HEX(name, level, addr, len) \
73 debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
74
75 #define QETH_DBF_MESSAGE(level, text...) \
76 debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
77
78 #define QETH_DBF_TEXT_(name, level, text...) \
79 qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
80
81 #define QETH_CARD_TEXT(card, level, text) \
82 debug_text_event(card->debug, level, text)
83
84 #define QETH_CARD_HEX(card, level, addr, len) \
85 debug_event(card->debug, level, (void *)(addr), len)
86
87 #define QETH_CARD_MESSAGE(card, text...) \
88 debug_sprintf_event(card->debug, level, text)
89
90 #define QETH_CARD_TEXT_(card, level, text...) \
91 qeth_dbf_longtext(card->debug, level, text)
92
93 #define SENSE_COMMAND_REJECT_BYTE 0
94 #define SENSE_COMMAND_REJECT_FLAG 0x80
95 #define SENSE_RESETTING_EVENT_BYTE 1
96 #define SENSE_RESETTING_EVENT_FLAG 0x80
97
qeth_get_device_id(struct ccw_device * cdev)98 static inline u32 qeth_get_device_id(struct ccw_device *cdev)
99 {
100 struct ccw_dev_id dev_id;
101 u32 id;
102
103 ccw_device_get_id(cdev, &dev_id);
104 id = dev_id.devno;
105 id |= (u32) (dev_id.ssid << 16);
106
107 return id;
108 }
109
110 /*
111 * Common IO related definitions
112 */
113 #define CARD_RDEV(card) card->read.ccwdev
114 #define CARD_WDEV(card) card->write.ccwdev
115 #define CARD_DDEV(card) card->data.ccwdev
116 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
117 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
118 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
119 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
120 #define CCW_DEVID(cdev) (qeth_get_device_id(cdev))
121 #define CARD_DEVID(card) (CCW_DEVID(CARD_RDEV(card)))
122
123 /* Routing stuff */
124 struct qeth_routing_info {
125 enum qeth_routing_types type;
126 };
127
128 /* IPA stuff */
129 struct qeth_ipa_info {
130 __u32 supported_funcs;
131 __u32 enabled_funcs;
132 };
133
134 /* SETBRIDGEPORT stuff */
135 enum qeth_sbp_roles {
136 QETH_SBP_ROLE_NONE = 0,
137 QETH_SBP_ROLE_PRIMARY = 1,
138 QETH_SBP_ROLE_SECONDARY = 2,
139 };
140
141 enum qeth_sbp_states {
142 QETH_SBP_STATE_INACTIVE = 0,
143 QETH_SBP_STATE_STANDBY = 1,
144 QETH_SBP_STATE_ACTIVE = 2,
145 };
146
147 #define QETH_SBP_HOST_NOTIFICATION 1
148
149 struct qeth_sbp_info {
150 __u32 supported_funcs;
151 enum qeth_sbp_roles role;
152 __u32 hostnotification:1;
153 __u32 reflect_promisc:1;
154 __u32 reflect_promisc_primary:1;
155 };
156
157 struct qeth_vnicc_info {
158 /* supported/currently configured VNICCs; updated in IPA exchanges */
159 u32 sup_chars;
160 u32 cur_chars;
161 /* supported commands: bitmasks which VNICCs support respective cmd */
162 u32 set_char_sup;
163 u32 getset_timeout_sup;
164 /* timeout value for the learning characteristic */
165 u32 learning_timeout;
166 /* characteristics wanted/configured by user */
167 u32 wanted_chars;
168 /* has user explicitly enabled rx_bcast while online? */
169 bool rx_bcast_enabled;
170 };
171
qeth_is_adp_supported(struct qeth_ipa_info * ipa,enum qeth_ipa_setadp_cmd func)172 static inline int qeth_is_adp_supported(struct qeth_ipa_info *ipa,
173 enum qeth_ipa_setadp_cmd func)
174 {
175 return (ipa->supported_funcs & func);
176 }
177
qeth_is_ipa_supported(struct qeth_ipa_info * ipa,enum qeth_ipa_funcs func)178 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
179 enum qeth_ipa_funcs func)
180 {
181 return (ipa->supported_funcs & func);
182 }
183
qeth_is_ipa_enabled(struct qeth_ipa_info * ipa,enum qeth_ipa_funcs func)184 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
185 enum qeth_ipa_funcs func)
186 {
187 return (ipa->supported_funcs & ipa->enabled_funcs & func);
188 }
189
190 #define qeth_adp_supported(c, f) \
191 qeth_is_adp_supported(&c->options.adp, f)
192 #define qeth_is_supported(c, f) \
193 qeth_is_ipa_supported(&c->options.ipa4, f)
194 #define qeth_is_enabled(c, f) \
195 qeth_is_ipa_enabled(&c->options.ipa4, f)
196 #define qeth_is_supported6(c, f) \
197 qeth_is_ipa_supported(&c->options.ipa6, f)
198 #define qeth_is_enabled6(c, f) \
199 qeth_is_ipa_enabled(&c->options.ipa6, f)
200 #define qeth_is_ipafunc_supported(c, prot, f) \
201 ((prot == QETH_PROT_IPV6) ? \
202 qeth_is_supported6(c, f) : qeth_is_supported(c, f))
203 #define qeth_is_ipafunc_enabled(c, prot, f) \
204 ((prot == QETH_PROT_IPV6) ? \
205 qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
206
207 #define QETH_IDX_FUNC_LEVEL_OSD 0x0101
208 #define QETH_IDX_FUNC_LEVEL_IQD 0x4108
209
210 #define QETH_BUFSIZE 4096
211 #define CCW_CMD_WRITE 0x01
212 #define CCW_CMD_READ 0x02
213
214 /**
215 * some more defs
216 */
217 #define QETH_TX_TIMEOUT 100 * HZ
218 #define QETH_RCD_TIMEOUT 60 * HZ
219 #define QETH_RECLAIM_WORK_TIME HZ
220 #define QETH_MAX_PORTNO 15
221
222 /*IPv6 address autoconfiguration stuff*/
223 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
224 #define UNIQUE_ID_NOT_BY_CARD 0x10000
225
226 /*****************************************************************************/
227 /* QDIO queue and buffer handling */
228 /*****************************************************************************/
229 #define QETH_MAX_QUEUES 4
230 #define QETH_IQD_MIN_TXQ 2 /* One for ucast, one for mcast. */
231 #define QETH_IQD_MCAST_TXQ 0
232 #define QETH_IQD_MIN_UCAST_TXQ 1
233 #define QETH_IN_BUF_SIZE_DEFAULT 65536
234 #define QETH_IN_BUF_COUNT_DEFAULT 64
235 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
236 #define QETH_IN_BUF_COUNT_MIN 8
237 #define QETH_IN_BUF_COUNT_MAX 128
238 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
239 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
240 ((card)->qdio.in_buf_pool.buf_count / 2)
241
242 /* buffers we have to be behind before we get a PCI */
243 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
244 /*enqueued free buffers left before we get a PCI*/
245 #define QETH_PCI_THRESHOLD_B(card) 0
246 /*not used unless the microcode gets patched*/
247 #define QETH_PCI_TIMER_VALUE(card) 3
248
249 /* priority queing */
250 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
251 #define QETH_DEFAULT_QUEUE 2
252 #define QETH_NO_PRIO_QUEUEING 0
253 #define QETH_PRIO_Q_ING_PREC 1
254 #define QETH_PRIO_Q_ING_TOS 2
255 #define QETH_PRIO_Q_ING_SKB 3
256 #define QETH_PRIO_Q_ING_VLAN 4
257
258 /* Packing */
259 #define QETH_LOW_WATERMARK_PACK 2
260 #define QETH_HIGH_WATERMARK_PACK 5
261 #define QETH_WATERMARK_PACK_FUZZ 1
262
263 /* large receive scatter gather copy break */
264 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
265 #define QETH_RX_PULL_LEN 256
266
267 struct qeth_hdr_layer3 {
268 __u8 id;
269 __u8 flags;
270 __u16 inbound_checksum; /*TSO:__u16 seqno */
271 __u32 token; /*TSO: __u32 reserved */
272 __u16 length;
273 __u8 vlan_prio;
274 __u8 ext_flags;
275 __u16 vlan_id;
276 __u16 frame_offset;
277 union {
278 /* TX: */
279 struct in6_addr ipv6_addr;
280 struct ipv4 {
281 u8 res[12];
282 u32 addr;
283 } ipv4;
284 /* RX: */
285 struct rx {
286 u8 res1[2];
287 u8 src_mac[6];
288 u8 res2[4];
289 u16 vlan_id;
290 u8 res3[2];
291 } rx;
292 } next_hop;
293 };
294
295 struct qeth_hdr_layer2 {
296 __u8 id;
297 __u8 flags[3];
298 __u8 port_no;
299 __u8 hdr_length;
300 __u16 pkt_length;
301 __u16 seq_no;
302 __u16 vlan_id;
303 __u32 reserved;
304 __u8 reserved2[16];
305 } __attribute__ ((packed));
306
307 struct qeth_hdr_osn {
308 __u8 id;
309 __u8 reserved;
310 __u16 seq_no;
311 __u16 reserved2;
312 __u16 control_flags;
313 __u16 pdu_length;
314 __u8 reserved3[18];
315 __u32 ccid;
316 } __attribute__ ((packed));
317
318 struct qeth_hdr {
319 union {
320 struct qeth_hdr_layer2 l2;
321 struct qeth_hdr_layer3 l3;
322 struct qeth_hdr_osn osn;
323 } hdr;
324 } __attribute__ ((packed));
325
326 /*TCP Segmentation Offload header*/
327 struct qeth_hdr_ext_tso {
328 __u16 hdr_tot_len;
329 __u8 imb_hdr_no;
330 __u8 reserved;
331 __u8 hdr_type;
332 __u8 hdr_version;
333 __u16 hdr_len;
334 __u32 payload_len;
335 __u16 mss;
336 __u16 dg_hdr_len;
337 __u8 padding[16];
338 } __attribute__ ((packed));
339
340 struct qeth_hdr_tso {
341 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
342 struct qeth_hdr_ext_tso ext;
343 } __attribute__ ((packed));
344
345
346 /* flags for qeth_hdr.flags */
347 #define QETH_HDR_PASSTHRU 0x10
348 #define QETH_HDR_IPV6 0x80
349 #define QETH_HDR_CAST_MASK 0x07
350 enum qeth_cast_flags {
351 QETH_CAST_UNICAST = 0x06,
352 QETH_CAST_MULTICAST = 0x04,
353 QETH_CAST_BROADCAST = 0x05,
354 QETH_CAST_ANYCAST = 0x07,
355 QETH_CAST_NOCAST = 0x00,
356 };
357
358 enum qeth_layer2_frame_flags {
359 QETH_LAYER2_FLAG_MULTICAST = 0x01,
360 QETH_LAYER2_FLAG_BROADCAST = 0x02,
361 QETH_LAYER2_FLAG_UNICAST = 0x04,
362 QETH_LAYER2_FLAG_VLAN = 0x10,
363 };
364
365 enum qeth_header_ids {
366 QETH_HEADER_TYPE_LAYER3 = 0x01,
367 QETH_HEADER_TYPE_LAYER2 = 0x02,
368 QETH_HEADER_TYPE_L3_TSO = 0x03,
369 QETH_HEADER_TYPE_OSN = 0x04,
370 QETH_HEADER_TYPE_L2_TSO = 0x06,
371 };
372 /* flags for qeth_hdr.ext_flags */
373 #define QETH_HDR_EXT_VLAN_FRAME 0x01
374 #define QETH_HDR_EXT_TOKEN_ID 0x02
375 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
376 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08
377 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10
378 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20
379 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/
380
qeth_l2_same_vlan(struct qeth_hdr_layer2 * h1,struct qeth_hdr_layer2 * h2)381 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1,
382 struct qeth_hdr_layer2 *h2)
383 {
384 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) &&
385 h1->vlan_id == h2->vlan_id;
386 }
387
qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 * h1,struct qeth_hdr_layer3 * h2)388 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1,
389 struct qeth_hdr_layer3 *h2)
390 {
391 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) &&
392 h1->vlan_id == h2->vlan_id;
393 }
394
qeth_l3_same_next_hop(struct qeth_hdr_layer3 * h1,struct qeth_hdr_layer3 * h2)395 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1,
396 struct qeth_hdr_layer3 *h2)
397 {
398 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) &&
399 ipv6_addr_equal(&h1->next_hop.ipv6_addr,
400 &h2->next_hop.ipv6_addr);
401 }
402
403 enum qeth_qdio_info_states {
404 QETH_QDIO_UNINITIALIZED,
405 QETH_QDIO_ALLOCATED,
406 QETH_QDIO_ESTABLISHED,
407 QETH_QDIO_CLEANING
408 };
409
410 struct qeth_buffer_pool_entry {
411 struct list_head list;
412 struct list_head init_list;
413 void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
414 };
415
416 struct qeth_qdio_buffer_pool {
417 struct list_head entry_list;
418 int buf_count;
419 };
420
421 struct qeth_qdio_buffer {
422 struct qdio_buffer *buffer;
423 /* the buffer pool entry currently associated to this buffer */
424 struct qeth_buffer_pool_entry *pool_entry;
425 struct sk_buff *rx_skb;
426 };
427
428 struct qeth_qdio_q {
429 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
430 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
431 int next_buf_to_init;
432 };
433
434 enum qeth_qdio_out_buffer_state {
435 /* Owned by driver, in order to be filled. */
436 QETH_QDIO_BUF_EMPTY,
437 /* Filled by driver; owned by hardware in order to be sent. */
438 QETH_QDIO_BUF_PRIMED,
439 /* Identified to be pending in TPQ. */
440 QETH_QDIO_BUF_PENDING,
441 /* Found in completion queue. */
442 QETH_QDIO_BUF_IN_CQ,
443 /* Handled via transfer pending / completion queue. */
444 QETH_QDIO_BUF_HANDLED_DELAYED,
445 };
446
447 struct qeth_qdio_out_buffer {
448 struct qdio_buffer *buffer;
449 atomic_t state;
450 int next_element_to_fill;
451 unsigned int bytes;
452 struct sk_buff_head skb_list;
453 int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
454
455 struct qeth_qdio_out_q *q;
456 struct qeth_qdio_out_buffer *next_pending;
457 };
458
459 struct qeth_card;
460
461 enum qeth_out_q_states {
462 QETH_OUT_Q_UNLOCKED,
463 QETH_OUT_Q_LOCKED,
464 QETH_OUT_Q_LOCKED_FLUSH,
465 };
466
467 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val))
468 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1)
469
470 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val))
471 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1)
472
473 struct qeth_card_stats {
474 u64 rx_bufs;
475 u64 rx_skb_csum;
476 u64 rx_sg_skbs;
477 u64 rx_sg_frags;
478 u64 rx_sg_alloc_page;
479
480 /* rtnl_link_stats64 */
481 u64 rx_packets;
482 u64 rx_bytes;
483 u64 rx_errors;
484 u64 rx_dropped;
485 u64 rx_multicast;
486 };
487
488 struct qeth_out_q_stats {
489 u64 bufs;
490 u64 bufs_pack;
491 u64 buf_elements;
492 u64 skbs_pack;
493 u64 skbs_sg;
494 u64 skbs_csum;
495 u64 skbs_tso;
496 u64 skbs_linearized;
497 u64 skbs_linearized_fail;
498 u64 tso_bytes;
499 u64 packing_mode_switch;
500 u64 stopped;
501 u64 completion_yield;
502 u64 completion_timer;
503
504 /* rtnl_link_stats64 */
505 u64 tx_packets;
506 u64 tx_bytes;
507 u64 tx_errors;
508 u64 tx_dropped;
509 };
510
511 #define QETH_TX_TIMER_USECS 500
512
513 struct qeth_qdio_out_q {
514 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
515 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
516 struct qdio_outbuf_state *bufstates; /* convenience pointer */
517 struct qeth_out_q_stats stats;
518 u8 next_buf_to_fill;
519 u8 max_elements;
520 u8 queue_no;
521 u8 do_pack;
522 struct qeth_card *card;
523 atomic_t state;
524 /*
525 * number of buffers that are currently filled (PRIMED)
526 * -> these buffers are hardware-owned
527 */
528 atomic_t used_buffers;
529 /* indicates whether PCI flag must be set (or if one is outstanding) */
530 atomic_t set_pci_flags_count;
531 struct napi_struct napi;
532 struct timer_list timer;
533 struct qeth_hdr *prev_hdr;
534 u8 bulk_start;
535 };
536
537 #define qeth_for_each_output_queue(card, q, i) \
538 for (i = 0; i < card->qdio.no_out_queues && \
539 (q = card->qdio.out_qs[i]); i++)
540
541 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi)
542
qeth_tx_arm_timer(struct qeth_qdio_out_q * queue)543 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue)
544 {
545 if (timer_pending(&queue->timer))
546 return;
547 mod_timer(&queue->timer, usecs_to_jiffies(QETH_TX_TIMER_USECS) +
548 jiffies);
549 }
550
qeth_out_queue_is_full(struct qeth_qdio_out_q * queue)551 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue)
552 {
553 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q;
554 }
555
qeth_out_queue_is_empty(struct qeth_qdio_out_q * queue)556 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue)
557 {
558 return atomic_read(&queue->used_buffers) == 0;
559 }
560
561 struct qeth_qdio_info {
562 atomic_t state;
563 /* input */
564 int no_in_queues;
565 struct qeth_qdio_q *in_q;
566 struct qeth_qdio_q *c_q;
567 struct qeth_qdio_buffer_pool in_buf_pool;
568 struct qeth_qdio_buffer_pool init_pool;
569 int in_buf_size;
570
571 /* output */
572 int no_out_queues;
573 struct qeth_qdio_out_q *out_qs[QETH_MAX_QUEUES];
574 struct qdio_outbuf_state *out_bufstates;
575
576 /* priority queueing */
577 int do_prio_queueing;
578 int default_out_queue;
579 };
580
581 /**
582 * channel state machine
583 */
584 enum qeth_channel_states {
585 CH_STATE_UP,
586 CH_STATE_DOWN,
587 CH_STATE_HALTED,
588 CH_STATE_STOPPED,
589 };
590 /**
591 * card state machine
592 */
593 enum qeth_card_states {
594 CARD_STATE_DOWN,
595 CARD_STATE_HARDSETUP,
596 CARD_STATE_SOFTSETUP,
597 };
598
599 /**
600 * Protocol versions
601 */
602 enum qeth_prot_versions {
603 QETH_PROT_NONE = 0x0000,
604 QETH_PROT_IPV4 = 0x0004,
605 QETH_PROT_IPV6 = 0x0006,
606 };
607
608 enum qeth_cq {
609 QETH_CQ_DISABLED = 0,
610 QETH_CQ_ENABLED = 1,
611 QETH_CQ_NOTAVAILABLE = 2,
612 };
613
614 struct qeth_ipato {
615 bool enabled;
616 bool invert4;
617 bool invert6;
618 struct list_head entries;
619 };
620
621 struct qeth_channel {
622 struct ccw_device *ccwdev;
623 enum qeth_channel_states state;
624 atomic_t irq_pending;
625 };
626
627 struct qeth_reply {
628 int (*callback)(struct qeth_card *card, struct qeth_reply *reply,
629 unsigned long data);
630 void *param;
631 };
632
633 struct qeth_cmd_buffer {
634 struct list_head list;
635 struct completion done;
636 spinlock_t lock;
637 unsigned int length;
638 refcount_t ref_count;
639 struct qeth_channel *channel;
640 struct qeth_reply reply;
641 long timeout;
642 unsigned char *data;
643 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
644 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob,
645 unsigned int data_length);
646 int rc;
647 };
648
qeth_get_cmd(struct qeth_cmd_buffer * iob)649 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob)
650 {
651 refcount_inc(&iob->ref_count);
652 }
653
__ipa_cmd(struct qeth_cmd_buffer * iob)654 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
655 {
656 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
657 }
658
__ccw_from_cmd(struct qeth_cmd_buffer * iob)659 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob)
660 {
661 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8));
662 }
663
qeth_trylock_channel(struct qeth_channel * channel)664 static inline bool qeth_trylock_channel(struct qeth_channel *channel)
665 {
666 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0;
667 }
668
669 /**
670 * OSA card related definitions
671 */
672 struct qeth_token {
673 __u32 issuer_rm_w;
674 __u32 issuer_rm_r;
675 __u32 cm_filter_w;
676 __u32 cm_filter_r;
677 __u32 cm_connection_w;
678 __u32 cm_connection_r;
679 __u32 ulp_filter_w;
680 __u32 ulp_filter_r;
681 __u32 ulp_connection_w;
682 __u32 ulp_connection_r;
683 };
684
685 struct qeth_seqno {
686 __u32 trans_hdr;
687 __u32 pdu_hdr;
688 __u32 pdu_hdr_ack;
689 __u16 ipa;
690 };
691
692 struct qeth_card_blkt {
693 int time_total;
694 int inter_packet;
695 int inter_packet_jumbo;
696 };
697
698 #define QETH_BROADCAST_WITH_ECHO 0x01
699 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
700 #define QETH_LAYER2_MAC_REGISTERED 0x02
701 struct qeth_card_info {
702 unsigned short unit_addr2;
703 unsigned short cula;
704 u8 chpid;
705 __u16 func_level;
706 char mcl_level[QETH_MCL_LENGTH + 1];
707 u8 open_when_online:1;
708 u8 promisc_mode:1;
709 u8 use_v1_blkt:1;
710 u8 is_vm_nic:1;
711 int mac_bits;
712 enum qeth_card_types type;
713 enum qeth_link_types link_type;
714 int broadcast_capable;
715 int unique_id;
716 bool layer_enforced;
717 struct qeth_card_blkt blkt;
718 __u32 diagass_support;
719 __u32 hwtrap;
720 };
721
722 enum qeth_discipline_id {
723 QETH_DISCIPLINE_UNDETERMINED = -1,
724 QETH_DISCIPLINE_LAYER3 = 0,
725 QETH_DISCIPLINE_LAYER2 = 1,
726 };
727
728 struct qeth_card_options {
729 struct qeth_routing_info route4;
730 struct qeth_ipa_info ipa4;
731 struct qeth_ipa_info adp; /*Adapter parameters*/
732 struct qeth_routing_info route6;
733 struct qeth_ipa_info ipa6;
734 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
735 struct qeth_vnicc_info vnicc; /* VNICC options */
736 int fake_broadcast;
737 enum qeth_discipline_id layer;
738 int rx_sg_cb;
739 enum qeth_ipa_isolation_modes isolation;
740 enum qeth_ipa_isolation_modes prev_isolation;
741 int sniffer;
742 enum qeth_cq cq;
743 char hsuid[9];
744 };
745
746 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2)
747 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3)
748
749 /*
750 * thread bits for qeth_card thread masks
751 */
752 enum qeth_threads {
753 QETH_RECOVER_THREAD = 1,
754 };
755
756 struct qeth_osn_info {
757 int (*assist_cb)(struct net_device *dev, void *data);
758 int (*data_cb)(struct sk_buff *skb);
759 };
760
761 struct qeth_discipline {
762 const struct device_type *devtype;
763 int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done);
764 int (*recover)(void *ptr);
765 int (*setup) (struct ccwgroup_device *);
766 void (*remove) (struct ccwgroup_device *);
767 int (*set_online) (struct ccwgroup_device *);
768 int (*set_offline) (struct ccwgroup_device *);
769 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
770 int (*control_event_handler)(struct qeth_card *card,
771 struct qeth_ipa_cmd *cmd);
772 };
773
774 enum qeth_addr_disposition {
775 QETH_DISP_ADDR_DELETE = 0,
776 QETH_DISP_ADDR_DO_NOTHING = 1,
777 QETH_DISP_ADDR_ADD = 2,
778 };
779
780 struct qeth_rx {
781 int b_count;
782 int b_index;
783 struct qdio_buffer_element *b_element;
784 int e_offset;
785 int qdio_err;
786 };
787
788 struct carrier_info {
789 __u8 card_type;
790 __u16 port_mode;
791 __u32 port_speed;
792 };
793
794 struct qeth_switch_info {
795 __u32 capabilities;
796 __u32 settings;
797 };
798
799 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
800
801 struct qeth_card {
802 enum qeth_card_states state;
803 spinlock_t lock;
804 struct ccwgroup_device *gdev;
805 struct qeth_cmd_buffer *read_cmd;
806 struct qeth_channel read;
807 struct qeth_channel write;
808 struct qeth_channel data;
809
810 struct net_device *dev;
811 struct qeth_card_stats stats;
812 struct qeth_card_info info;
813 struct qeth_token token;
814 struct qeth_seqno seqno;
815 struct qeth_card_options options;
816
817 struct workqueue_struct *event_wq;
818 struct workqueue_struct *cmd_wq;
819 wait_queue_head_t wait_q;
820 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
821 DECLARE_HASHTABLE(mac_htable, 4);
822 DECLARE_HASHTABLE(ip_htable, 4);
823 struct mutex ip_lock;
824 DECLARE_HASHTABLE(ip_mc_htable, 4);
825 struct work_struct rx_mode_work;
826 struct work_struct kernel_thread_starter;
827 spinlock_t thread_mask_lock;
828 unsigned long thread_start_mask;
829 unsigned long thread_allowed_mask;
830 unsigned long thread_running_mask;
831 struct qeth_ipato ipato;
832 struct list_head cmd_waiter_list;
833 /* QDIO buffer handling */
834 struct qeth_qdio_info qdio;
835 int read_or_write_problem;
836 struct qeth_osn_info osn_info;
837 struct qeth_discipline *discipline;
838 atomic_t force_alloc_skb;
839 struct service_level qeth_service_level;
840 struct qdio_ssqd_desc ssqd;
841 debug_info_t *debug;
842 struct mutex sbp_lock;
843 struct mutex conf_mutex;
844 struct mutex discipline_mutex;
845 struct napi_struct napi;
846 struct qeth_rx rx;
847 struct delayed_work buffer_reclaim_work;
848 int reclaim_index;
849 struct work_struct close_dev_work;
850 };
851
qeth_card_hw_is_reachable(struct qeth_card * card)852 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card)
853 {
854 return card->state == CARD_STATE_SOFTSETUP;
855 }
856
857 struct qeth_trap_id {
858 __u16 lparnr;
859 char vmname[8];
860 __u8 chpid;
861 __u8 ssid;
862 __u16 devno;
863 } __packed;
864
865 /*some helper functions*/
866 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
867
qeth_netdev_is_registered(struct net_device * dev)868 static inline bool qeth_netdev_is_registered(struct net_device *dev)
869 {
870 return dev->netdev_ops != NULL;
871 }
872
qeth_iqd_translate_txq(struct net_device * dev,u16 txq)873 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq)
874 {
875 if (txq == QETH_IQD_MCAST_TXQ)
876 return dev->num_tx_queues - 1;
877 if (txq == dev->num_tx_queues - 1)
878 return QETH_IQD_MCAST_TXQ;
879 return txq;
880 }
881
qeth_scrub_qdio_buffer(struct qdio_buffer * buf,unsigned int elements)882 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf,
883 unsigned int elements)
884 {
885 unsigned int i;
886
887 for (i = 0; i < elements; i++)
888 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element));
889 buf->element[14].sflags = 0;
890 buf->element[15].sflags = 0;
891 }
892
893 /**
894 * qeth_get_elements_for_range() - find number of SBALEs to cover range.
895 * @start: Start of the address range.
896 * @end: Address after the end of the range.
897 *
898 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
899 * the specified address range.
900 */
qeth_get_elements_for_range(addr_t start,addr_t end)901 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
902 {
903 return PFN_UP(end) - PFN_DOWN(start);
904 }
905
qeth_get_ip_version(struct sk_buff * skb)906 static inline int qeth_get_ip_version(struct sk_buff *skb)
907 {
908 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
909 __be16 prot = veth->h_vlan_proto;
910
911 if (prot == htons(ETH_P_8021Q))
912 prot = veth->h_vlan_encapsulated_proto;
913
914 switch (prot) {
915 case htons(ETH_P_IPV6):
916 return 6;
917 case htons(ETH_P_IP):
918 return 4;
919 default:
920 return 0;
921 }
922 }
923
qeth_get_ether_cast_type(struct sk_buff * skb)924 static inline int qeth_get_ether_cast_type(struct sk_buff *skb)
925 {
926 u8 *addr = eth_hdr(skb)->h_dest;
927
928 if (is_multicast_ether_addr(addr))
929 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST :
930 RTN_MULTICAST;
931 return RTN_UNICAST;
932 }
933
qeth_dst_check_rcu(struct sk_buff * skb,int ipv)934 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv)
935 {
936 struct dst_entry *dst = skb_dst(skb);
937 struct rt6_info *rt;
938
939 rt = (struct rt6_info *) dst;
940 if (dst)
941 dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0);
942 return dst;
943 }
944
qeth_rx_csum(struct qeth_card * card,struct sk_buff * skb,u8 flags)945 static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb,
946 u8 flags)
947 {
948 if ((card->dev->features & NETIF_F_RXCSUM) &&
949 (flags & QETH_HDR_EXT_CSUM_TRANSP_REQ)) {
950 skb->ip_summed = CHECKSUM_UNNECESSARY;
951 QETH_CARD_STAT_INC(card, rx_skb_csum);
952 } else {
953 skb->ip_summed = CHECKSUM_NONE;
954 }
955 }
956
qeth_tx_csum(struct sk_buff * skb,u8 * flags,int ipv)957 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv)
958 {
959 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
960 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
961 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP))
962 *flags |= QETH_HDR_EXT_UDP;
963 }
964
qeth_put_buffer_pool_entry(struct qeth_card * card,struct qeth_buffer_pool_entry * entry)965 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
966 struct qeth_buffer_pool_entry *entry)
967 {
968 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
969 }
970
qeth_is_diagass_supported(struct qeth_card * card,enum qeth_diags_cmds cmd)971 static inline int qeth_is_diagass_supported(struct qeth_card *card,
972 enum qeth_diags_cmds cmd)
973 {
974 return card->info.diagass_support & (__u32)cmd;
975 }
976
977 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
978 enum qeth_ipa_funcs ipa_func,
979 u16 cmd_code, u32 *data,
980 enum qeth_prot_versions prot);
981 /* IPv4 variant */
qeth_send_simple_setassparms(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,u16 cmd_code,u32 * data)982 static inline int qeth_send_simple_setassparms(struct qeth_card *card,
983 enum qeth_ipa_funcs ipa_func,
984 u16 cmd_code, u32 *data)
985 {
986 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
987 data, QETH_PROT_IPV4);
988 }
989
qeth_send_simple_setassparms_v6(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,u16 cmd_code,u32 * data)990 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
991 enum qeth_ipa_funcs ipa_func,
992 u16 cmd_code, u32 *data)
993 {
994 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
995 data, QETH_PROT_IPV6);
996 }
997
998 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb);
999
1000 extern struct qeth_discipline qeth_l2_discipline;
1001 extern struct qeth_discipline qeth_l3_discipline;
1002 extern const struct ethtool_ops qeth_ethtool_ops;
1003 extern const struct ethtool_ops qeth_osn_ethtool_ops;
1004 extern const struct attribute_group *qeth_generic_attr_groups[];
1005 extern const struct attribute_group *qeth_osn_attr_groups[];
1006 extern const struct attribute_group qeth_device_attr_group;
1007 extern const struct attribute_group qeth_device_blkt_group;
1008 extern const struct device_type qeth_generic_devtype;
1009
1010 const char *qeth_get_cardname_short(struct qeth_card *);
1011 int qeth_realloc_buffer_pool(struct qeth_card *, int);
1012 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
1013 void qeth_core_free_discipline(struct qeth_card *);
1014
1015 /* exports for qeth discipline device drivers */
1016 extern struct kmem_cache *qeth_core_header_cache;
1017 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
1018
1019 struct net_device *qeth_clone_netdev(struct net_device *orig);
1020 struct qeth_card *qeth_get_card_by_busid(char *bus_id);
1021 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
1022 int qeth_threads_running(struct qeth_card *, unsigned long);
1023 int qeth_do_run_thread(struct qeth_card *, unsigned long);
1024 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
1025 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
1026 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok);
1027 void qeth_print_status_message(struct qeth_card *);
1028 int qeth_init_qdio_queues(struct qeth_card *);
1029 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
1030 int (*reply_cb)
1031 (struct qeth_card *, struct qeth_reply *, unsigned long),
1032 void *);
1033 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
1034 enum qeth_ipa_cmds cmd_code,
1035 enum qeth_prot_versions prot,
1036 unsigned int data_length);
1037 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
1038 unsigned int length, unsigned int ccws,
1039 long timeout);
1040 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
1041 enum qeth_ipa_funcs ipa_func,
1042 u16 cmd_code,
1043 unsigned int data_length,
1044 enum qeth_prot_versions prot);
1045 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
1046 enum qeth_diags_cmds sub_cmd,
1047 unsigned int data_length);
1048 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason);
1049 void qeth_put_cmd(struct qeth_cmd_buffer *iob);
1050
1051 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
1052 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
1053 struct qeth_hdr **);
1054 void qeth_schedule_recovery(struct qeth_card *);
1055 int qeth_poll(struct napi_struct *napi, int budget);
1056 void qeth_clear_ipacmd_list(struct qeth_card *);
1057 int qeth_qdio_clear_card(struct qeth_card *, int);
1058 void qeth_clear_working_pool_list(struct qeth_card *);
1059 void qeth_drain_output_queues(struct qeth_card *card);
1060 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable);
1061 int qeth_setadpparms_change_macaddr(struct qeth_card *);
1062 void qeth_tx_timeout(struct net_device *);
1063 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
1064 u16 cmd_length);
1065 int qeth_query_switch_attributes(struct qeth_card *card,
1066 struct qeth_switch_info *sw_info);
1067 int qeth_query_card_info(struct qeth_card *card,
1068 struct carrier_info *carrier_info);
1069 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset);
1070 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
1071 struct sk_buff *skb, struct qeth_hdr *hdr,
1072 unsigned int offset, unsigned int hd_len,
1073 int elements_needed);
1074 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
1075 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
1076 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
1077 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
1078 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
1079 void qeth_trace_features(struct qeth_card *);
1080 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
1081 int qeth_set_features(struct net_device *, netdev_features_t);
1082 void qeth_enable_hw_features(struct net_device *dev);
1083 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
1084 netdev_features_t qeth_features_check(struct sk_buff *skb,
1085 struct net_device *dev,
1086 netdev_features_t features);
1087 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
1088 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1089 u8 cast_type, struct net_device *sb_dev);
1090 int qeth_open(struct net_device *dev);
1091 int qeth_stop(struct net_device *dev);
1092
1093 int qeth_vm_request_mac(struct qeth_card *card);
1094 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
1095 struct qeth_qdio_out_q *queue, int ipv,
1096 void (*fill_header)(struct qeth_qdio_out_q *queue,
1097 struct qeth_hdr *hdr, struct sk_buff *skb,
1098 int ipv, unsigned int data_len));
1099
1100 /* exports for OSN */
1101 int qeth_osn_assist(struct net_device *, void *, int);
1102 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
1103 int (*assist_cb)(struct net_device *, void *),
1104 int (*data_cb)(struct sk_buff *));
1105 void qeth_osn_deregister(struct net_device *);
1106
1107 #endif /* __QETH_CORE_H__ */
1108
