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/debugfs.h>
15 #include <linux/if.h>
16 #include <linux/if_arp.h>
17 #include <linux/etherdevice.h>
18 #include <linux/if_vlan.h>
19 #include <linux/ctype.h>
20 #include <linux/in6.h>
21 #include <linux/bitops.h>
22 #include <linux/seq_file.h>
23 #include <linux/hashtable.h>
24 #include <linux/ip.h>
25 #include <linux/rcupdate.h>
26 #include <linux/refcount.h>
27 #include <linux/timer.h>
28 #include <linux/types.h>
29 #include <linux/wait.h>
30 #include <linux/workqueue.h>
31
32 #include <net/dst.h>
33 #include <net/ip6_fib.h>
34 #include <net/ipv6.h>
35 #include <net/if_inet6.h>
36 #include <net/addrconf.h>
37 #include <net/route.h>
38 #include <net/sch_generic.h>
39 #include <net/tcp.h>
40
41 #include <asm/debug.h>
42 #include <asm/qdio.h>
43 #include <asm/ccwdev.h>
44 #include <asm/ccwgroup.h>
45 #include <asm/sysinfo.h>
46
47 #include <uapi/linux/if_link.h>
48
49 #include "qeth_core_mpc.h"
50
51 /**
52 * Debug Facility stuff
53 */
54 enum qeth_dbf_names {
55 QETH_DBF_SETUP,
56 QETH_DBF_MSG,
57 QETH_DBF_CTRL,
58 QETH_DBF_INFOS /* must be last element */
59 };
60
61 struct qeth_dbf_info {
62 char name[DEBUG_MAX_NAME_LEN];
63 int pages;
64 int areas;
65 int len;
66 int level;
67 struct debug_view *view;
68 debug_info_t *id;
69 };
70
71 #define QETH_DBF_CTRL_LEN 256U
72
73 #define QETH_DBF_TEXT(name, level, text) \
74 debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
75
76 #define QETH_DBF_HEX(name, level, addr, len) \
77 debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
78
79 #define QETH_DBF_MESSAGE(level, text...) \
80 debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
81
82 #define QETH_DBF_TEXT_(name, level, text...) \
83 qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
84
85 #define QETH_CARD_TEXT(card, level, text) \
86 debug_text_event(card->debug, level, text)
87
88 #define QETH_CARD_HEX(card, level, addr, len) \
89 debug_event(card->debug, level, (void *)(addr), len)
90
91 #define QETH_CARD_MESSAGE(card, text...) \
92 debug_sprintf_event(card->debug, level, text)
93
94 #define QETH_CARD_TEXT_(card, level, text...) \
95 qeth_dbf_longtext(card->debug, level, text)
96
97 #define SENSE_COMMAND_REJECT_BYTE 0
98 #define SENSE_COMMAND_REJECT_FLAG 0x80
99 #define SENSE_RESETTING_EVENT_BYTE 1
100 #define SENSE_RESETTING_EVENT_FLAG 0x80
101
qeth_get_device_id(struct ccw_device * cdev)102 static inline u32 qeth_get_device_id(struct ccw_device *cdev)
103 {
104 struct ccw_dev_id dev_id;
105 u32 id;
106
107 ccw_device_get_id(cdev, &dev_id);
108 id = dev_id.devno;
109 id |= (u32) (dev_id.ssid << 16);
110
111 return id;
112 }
113
114 /*
115 * Common IO related definitions
116 */
117 #define CARD_RDEV(card) card->read.ccwdev
118 #define CARD_WDEV(card) card->write.ccwdev
119 #define CARD_DDEV(card) card->data.ccwdev
120 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
121 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
122 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
123 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
124 #define CCW_DEVID(cdev) (qeth_get_device_id(cdev))
125 #define CARD_DEVID(card) (CCW_DEVID(CARD_RDEV(card)))
126
127 /* Routing stuff */
128 struct qeth_routing_info {
129 enum qeth_routing_types type;
130 };
131
132 /* SETBRIDGEPORT stuff */
133 enum qeth_sbp_roles {
134 QETH_SBP_ROLE_NONE = 0,
135 QETH_SBP_ROLE_PRIMARY = 1,
136 QETH_SBP_ROLE_SECONDARY = 2,
137 };
138
139 enum qeth_sbp_states {
140 QETH_SBP_STATE_INACTIVE = 0,
141 QETH_SBP_STATE_STANDBY = 1,
142 QETH_SBP_STATE_ACTIVE = 2,
143 };
144
145 #define QETH_SBP_HOST_NOTIFICATION 1
146
147 struct qeth_sbp_info {
148 __u32 supported_funcs;
149 enum qeth_sbp_roles role;
150 __u32 hostnotification:1;
151 __u32 reflect_promisc:1;
152 __u32 reflect_promisc_primary:1;
153 };
154
155 struct qeth_vnicc_info {
156 /* supported/currently configured VNICCs; updated in IPA exchanges */
157 u32 sup_chars;
158 u32 cur_chars;
159 /* supported commands: bitmasks which VNICCs support respective cmd */
160 u32 set_char_sup;
161 u32 getset_timeout_sup;
162 /* timeout value for the learning characteristic */
163 u32 learning_timeout;
164 /* characteristics wanted/configured by user */
165 u32 wanted_chars;
166 /* has user explicitly enabled rx_bcast while online? */
167 bool rx_bcast_enabled;
168 };
169
170 #define QETH_IDX_FUNC_LEVEL_OSD 0x0101
171 #define QETH_IDX_FUNC_LEVEL_IQD 0x4108
172
173 #define QETH_BUFSIZE 4096
174 #define CCW_CMD_WRITE 0x01
175 #define CCW_CMD_READ 0x02
176
177 /**
178 * some more defs
179 */
180 #define QETH_TX_TIMEOUT (100 * HZ)
181 #define QETH_RCD_TIMEOUT (60 * HZ)
182 #define QETH_RECLAIM_WORK_TIME HZ
183 #define QETH_MAX_PORTNO 15
184
185 /*****************************************************************************/
186 /* QDIO queue and buffer handling */
187 /*****************************************************************************/
188 #define QETH_MAX_OUT_QUEUES 4
189 #define QETH_IQD_MIN_TXQ 2 /* One for ucast, one for mcast. */
190 #define QETH_IQD_MCAST_TXQ 0
191 #define QETH_IQD_MIN_UCAST_TXQ 1
192
193 #define QETH_MAX_IN_QUEUES 2
194 #define QETH_RX_COPYBREAK (PAGE_SIZE >> 1)
195 #define QETH_IN_BUF_SIZE_DEFAULT 65536
196 #define QETH_IN_BUF_COUNT_DEFAULT 64
197 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
198 #define QETH_IN_BUF_COUNT_MIN 8U
199 #define QETH_IN_BUF_COUNT_MAX 128U
200 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
201 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
202 ((card)->qdio.in_buf_pool.buf_count / 2)
203
204 /* buffers we have to be behind before we get a PCI */
205 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
206 /*enqueued free buffers left before we get a PCI*/
207 #define QETH_PCI_THRESHOLD_B(card) 0
208 /*not used unless the microcode gets patched*/
209 #define QETH_PCI_TIMER_VALUE(card) 3
210
211 /* priority queing */
212 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
213 #define QETH_DEFAULT_QUEUE 2
214 #define QETH_NO_PRIO_QUEUEING 0
215 #define QETH_PRIO_Q_ING_PREC 1
216 #define QETH_PRIO_Q_ING_TOS 2
217 #define QETH_PRIO_Q_ING_SKB 3
218 #define QETH_PRIO_Q_ING_VLAN 4
219 #define QETH_PRIO_Q_ING_FIXED 5
220
221 /* Packing */
222 #define QETH_LOW_WATERMARK_PACK 2
223 #define QETH_HIGH_WATERMARK_PACK 5
224 #define QETH_WATERMARK_PACK_FUZZ 1
225
226 struct qeth_hdr_layer3 {
227 __u8 id;
228 __u8 flags;
229 __u16 inbound_checksum; /*TSO:__u16 seqno */
230 __u32 token; /*TSO: __u32 reserved */
231 __u16 length;
232 __u8 vlan_prio;
233 __u8 ext_flags;
234 __u16 vlan_id;
235 __u16 frame_offset;
236 union {
237 /* TX: */
238 struct in6_addr addr;
239 /* RX: */
240 struct rx {
241 u8 res1[2];
242 u8 src_mac[6];
243 u8 res2[4];
244 u16 vlan_id;
245 u8 res3[2];
246 } rx;
247 } next_hop;
248 };
249
250 struct qeth_hdr_layer2 {
251 __u8 id;
252 __u8 flags[3];
253 __u8 port_no;
254 __u8 hdr_length;
255 __u16 pkt_length;
256 __u16 seq_no;
257 __u16 vlan_id;
258 __u32 reserved;
259 __u8 reserved2[16];
260 } __attribute__ ((packed));
261
262 struct qeth_hdr_osn {
263 __u8 id;
264 __u8 reserved;
265 __u16 seq_no;
266 __u16 reserved2;
267 __u16 control_flags;
268 __u16 pdu_length;
269 __u8 reserved3[18];
270 __u32 ccid;
271 } __attribute__ ((packed));
272
273 struct qeth_hdr {
274 union {
275 struct qeth_hdr_layer2 l2;
276 struct qeth_hdr_layer3 l3;
277 struct qeth_hdr_osn osn;
278 } hdr;
279 } __attribute__ ((packed));
280
281 #define QETH_QIB_PQUE_ORDER_RR 0
282 #define QETH_QIB_PQUE_UNITS_SBAL 2
283 #define QETH_QIB_PQUE_PRIO_DEFAULT 4
284
285 struct qeth_qib_parms {
286 char pcit_magic[4];
287 u32 pcit_a;
288 u32 pcit_b;
289 u32 pcit_c;
290 char blkt_magic[4];
291 u32 blkt_total;
292 u32 blkt_inter_packet;
293 u32 blkt_inter_packet_jumbo;
294 char pque_magic[4];
295 u8 pque_order;
296 u8 pque_units;
297 u16 reserved;
298 u32 pque_priority[4];
299 };
300
301 /*TCP Segmentation Offload header*/
302 struct qeth_hdr_ext_tso {
303 __u16 hdr_tot_len;
304 __u8 imb_hdr_no;
305 __u8 reserved;
306 __u8 hdr_type;
307 __u8 hdr_version;
308 __u16 hdr_len;
309 __u32 payload_len;
310 __u16 mss;
311 __u16 dg_hdr_len;
312 __u8 padding[16];
313 } __attribute__ ((packed));
314
315 struct qeth_hdr_tso {
316 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
317 struct qeth_hdr_ext_tso ext;
318 } __attribute__ ((packed));
319
320
321 /* flags for qeth_hdr.flags */
322 #define QETH_HDR_PASSTHRU 0x10
323 #define QETH_HDR_IPV6 0x80
324 #define QETH_HDR_CAST_MASK 0x07
325 enum qeth_cast_flags {
326 QETH_CAST_UNICAST = 0x06,
327 QETH_CAST_MULTICAST = 0x04,
328 QETH_CAST_BROADCAST = 0x05,
329 QETH_CAST_ANYCAST = 0x07,
330 QETH_CAST_NOCAST = 0x00,
331 };
332
333 enum qeth_layer2_frame_flags {
334 QETH_LAYER2_FLAG_MULTICAST = 0x01,
335 QETH_LAYER2_FLAG_BROADCAST = 0x02,
336 QETH_LAYER2_FLAG_UNICAST = 0x04,
337 QETH_LAYER2_FLAG_VLAN = 0x10,
338 };
339
340 enum qeth_header_ids {
341 QETH_HEADER_TYPE_LAYER3 = 0x01,
342 QETH_HEADER_TYPE_LAYER2 = 0x02,
343 QETH_HEADER_TYPE_L3_TSO = 0x03,
344 QETH_HEADER_TYPE_OSN = 0x04,
345 QETH_HEADER_TYPE_L2_TSO = 0x06,
346 QETH_HEADER_MASK_INVAL = 0x80,
347 };
348 /* flags for qeth_hdr.ext_flags */
349 #define QETH_HDR_EXT_VLAN_FRAME 0x01
350 #define QETH_HDR_EXT_TOKEN_ID 0x02
351 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
352 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08
353 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10
354 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20
355 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/
356
qeth_l2_same_vlan(struct qeth_hdr_layer2 * h1,struct qeth_hdr_layer2 * h2)357 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1,
358 struct qeth_hdr_layer2 *h2)
359 {
360 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) &&
361 h1->vlan_id == h2->vlan_id;
362 }
363
qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 * h1,struct qeth_hdr_layer3 * h2)364 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1,
365 struct qeth_hdr_layer3 *h2)
366 {
367 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) &&
368 h1->vlan_id == h2->vlan_id;
369 }
370
qeth_l3_same_next_hop(struct qeth_hdr_layer3 * h1,struct qeth_hdr_layer3 * h2)371 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1,
372 struct qeth_hdr_layer3 *h2)
373 {
374 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) &&
375 ipv6_addr_equal(&h1->next_hop.addr, &h2->next_hop.addr);
376 }
377
378 struct qeth_local_addr {
379 struct hlist_node hnode;
380 struct rcu_head rcu;
381 struct in6_addr addr;
382 };
383
384 enum qeth_qdio_info_states {
385 QETH_QDIO_UNINITIALIZED,
386 QETH_QDIO_ALLOCATED,
387 QETH_QDIO_ESTABLISHED,
388 QETH_QDIO_CLEANING
389 };
390
391 struct qeth_buffer_pool_entry {
392 struct list_head list;
393 struct list_head init_list;
394 struct page *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
395 };
396
397 struct qeth_qdio_buffer_pool {
398 struct list_head entry_list;
399 int buf_count;
400 };
401
402 struct qeth_qdio_buffer {
403 struct qdio_buffer *buffer;
404 /* the buffer pool entry currently associated to this buffer */
405 struct qeth_buffer_pool_entry *pool_entry;
406 struct sk_buff *rx_skb;
407 };
408
409 struct qeth_qdio_q {
410 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
411 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
412 int next_buf_to_init;
413 };
414
415 enum qeth_qdio_out_buffer_state {
416 /* Owned by driver, in order to be filled. */
417 QETH_QDIO_BUF_EMPTY,
418 /* Filled by driver; owned by hardware in order to be sent. */
419 QETH_QDIO_BUF_PRIMED,
420 /* Discovered by the TX completion code: */
421 QETH_QDIO_BUF_PENDING,
422 /* Finished by the TX completion code: */
423 QETH_QDIO_BUF_NEED_QAOB,
424 /* Received QAOB notification on CQ: */
425 QETH_QDIO_BUF_QAOB_OK,
426 QETH_QDIO_BUF_QAOB_ERROR,
427 };
428
429 struct qeth_qdio_out_buffer {
430 struct qdio_buffer *buffer;
431 atomic_t state;
432 int next_element_to_fill;
433 unsigned int frames;
434 unsigned int bytes;
435 struct sk_buff_head skb_list;
436 int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
437
438 struct qeth_qdio_out_q *q;
439 struct list_head list_entry;
440 };
441
442 struct qeth_card;
443
444 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val))
445 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1)
446
447 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val))
448 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1)
449
450 struct qeth_card_stats {
451 u64 rx_bufs;
452 u64 rx_skb_csum;
453 u64 rx_sg_skbs;
454 u64 rx_sg_frags;
455 u64 rx_sg_alloc_page;
456
457 u64 rx_dropped_nomem;
458 u64 rx_dropped_notsupp;
459 u64 rx_dropped_runt;
460
461 /* rtnl_link_stats64 */
462 u64 rx_packets;
463 u64 rx_bytes;
464 u64 rx_multicast;
465 u64 rx_length_errors;
466 u64 rx_frame_errors;
467 u64 rx_fifo_errors;
468 };
469
470 struct qeth_out_q_stats {
471 u64 bufs;
472 u64 bufs_pack;
473 u64 buf_elements;
474 u64 skbs_pack;
475 u64 skbs_sg;
476 u64 skbs_csum;
477 u64 skbs_tso;
478 u64 skbs_linearized;
479 u64 skbs_linearized_fail;
480 u64 tso_bytes;
481 u64 packing_mode_switch;
482 u64 stopped;
483 u64 doorbell;
484 u64 coal_frames;
485 u64 completion_yield;
486 u64 completion_timer;
487
488 /* rtnl_link_stats64 */
489 u64 tx_packets;
490 u64 tx_bytes;
491 u64 tx_errors;
492 u64 tx_dropped;
493 };
494
495 #define QETH_TX_MAX_COALESCED_FRAMES 1
496 #define QETH_TX_COALESCE_USECS 25
497 #define QETH_TX_TIMER_USECS 500
498
499 struct qeth_qdio_out_q {
500 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
501 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
502 struct qdio_outbuf_state *bufstates; /* convenience pointer */
503 struct list_head pending_bufs;
504 struct qeth_out_q_stats stats;
505 spinlock_t lock;
506 unsigned int priority;
507 u8 next_buf_to_fill;
508 u8 max_elements;
509 u8 queue_no;
510 u8 do_pack;
511 struct qeth_card *card;
512 /*
513 * number of buffers that are currently filled (PRIMED)
514 * -> these buffers are hardware-owned
515 */
516 atomic_t used_buffers;
517 /* indicates whether PCI flag must be set (or if one is outstanding) */
518 atomic_t set_pci_flags_count;
519 struct napi_struct napi;
520 struct timer_list timer;
521 struct qeth_hdr *prev_hdr;
522 unsigned int coalesced_frames;
523 u8 bulk_start;
524 u8 bulk_count;
525 u8 bulk_max;
526
527 unsigned int coalesce_usecs;
528 unsigned int max_coalesced_frames;
529 };
530
531 #define qeth_for_each_output_queue(card, q, i) \
532 for (i = 0; i < card->qdio.no_out_queues && \
533 (q = card->qdio.out_qs[i]); i++)
534
535 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi)
536
qeth_tx_arm_timer(struct qeth_qdio_out_q * queue,unsigned long usecs)537 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue,
538 unsigned long usecs)
539 {
540 timer_reduce(&queue->timer, usecs_to_jiffies(usecs) + jiffies);
541 }
542
qeth_out_queue_is_full(struct qeth_qdio_out_q * queue)543 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue)
544 {
545 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q;
546 }
547
qeth_out_queue_is_empty(struct qeth_qdio_out_q * queue)548 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue)
549 {
550 return atomic_read(&queue->used_buffers) == 0;
551 }
552
553 struct qeth_qdio_info {
554 atomic_t state;
555 /* input */
556 int no_in_queues;
557 struct qeth_qdio_q *in_q;
558 struct qeth_qdio_q *c_q;
559 struct qeth_qdio_buffer_pool in_buf_pool;
560 struct qeth_qdio_buffer_pool init_pool;
561 int in_buf_size;
562
563 /* output */
564 unsigned int no_out_queues;
565 struct qeth_qdio_out_q *out_qs[QETH_MAX_OUT_QUEUES];
566 struct qdio_outbuf_state *out_bufstates;
567
568 /* priority queueing */
569 int do_prio_queueing;
570 int default_out_queue;
571 };
572
573 /**
574 * channel state machine
575 */
576 enum qeth_channel_states {
577 CH_STATE_UP,
578 CH_STATE_DOWN,
579 CH_STATE_HALTED,
580 CH_STATE_STOPPED,
581 };
582 /**
583 * card state machine
584 */
585 enum qeth_card_states {
586 CARD_STATE_DOWN,
587 CARD_STATE_SOFTSETUP,
588 };
589
590 /**
591 * Protocol versions
592 */
593 enum qeth_prot_versions {
594 QETH_PROT_NONE = 0x0000,
595 QETH_PROT_IPV4 = 0x0004,
596 QETH_PROT_IPV6 = 0x0006,
597 };
598
599 enum qeth_cq {
600 QETH_CQ_DISABLED = 0,
601 QETH_CQ_ENABLED = 1,
602 QETH_CQ_NOTAVAILABLE = 2,
603 };
604
605 struct qeth_ipato {
606 bool enabled;
607 bool invert4;
608 bool invert6;
609 struct list_head entries;
610 };
611
612 struct qeth_channel {
613 struct ccw_device *ccwdev;
614 struct qeth_cmd_buffer *active_cmd;
615 enum qeth_channel_states state;
616 atomic_t irq_pending;
617 };
618
619 struct qeth_reply {
620 int (*callback)(struct qeth_card *card, struct qeth_reply *reply,
621 unsigned long data);
622 void *param;
623 };
624
625 struct qeth_cmd_buffer {
626 struct list_head list;
627 struct completion done;
628 spinlock_t lock;
629 unsigned int length;
630 refcount_t ref_count;
631 struct qeth_channel *channel;
632 struct qeth_reply reply;
633 long timeout;
634 unsigned char *data;
635 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
636 bool (*match)(struct qeth_cmd_buffer *iob,
637 struct qeth_cmd_buffer *reply);
638 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob,
639 unsigned int data_length);
640 int rc;
641 };
642
qeth_get_cmd(struct qeth_cmd_buffer * iob)643 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob)
644 {
645 refcount_inc(&iob->ref_count);
646 }
647
__ipa_reply(struct qeth_cmd_buffer * iob)648 static inline struct qeth_ipa_cmd *__ipa_reply(struct qeth_cmd_buffer *iob)
649 {
650 if (!IS_IPA(iob->data))
651 return NULL;
652
653 return (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
654 }
655
__ipa_cmd(struct qeth_cmd_buffer * iob)656 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
657 {
658 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
659 }
660
__ccw_from_cmd(struct qeth_cmd_buffer * iob)661 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob)
662 {
663 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8));
664 }
665
qeth_trylock_channel(struct qeth_channel * channel)666 static inline bool qeth_trylock_channel(struct qeth_channel *channel)
667 {
668 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0;
669 }
670
671 /**
672 * OSA card related definitions
673 */
674 struct qeth_token {
675 __u32 issuer_rm_w;
676 __u32 issuer_rm_r;
677 __u32 cm_filter_w;
678 __u32 cm_filter_r;
679 __u32 cm_connection_w;
680 __u32 cm_connection_r;
681 __u32 ulp_filter_w;
682 __u32 ulp_filter_r;
683 __u32 ulp_connection_w;
684 __u32 ulp_connection_r;
685 };
686
687 struct qeth_seqno {
688 __u32 trans_hdr;
689 __u32 pdu_hdr;
690 __u32 pdu_hdr_ack;
691 __u16 ipa;
692 };
693
694 struct qeth_card_blkt {
695 int time_total;
696 int inter_packet;
697 int inter_packet_jumbo;
698 };
699
700 enum qeth_pnso_mode {
701 QETH_PNSO_NONE,
702 QETH_PNSO_BRIDGEPORT,
703 QETH_PNSO_ADDR_INFO,
704 };
705
706 #define QETH_BROADCAST_WITH_ECHO 0x01
707 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
708 struct qeth_card_info {
709 unsigned short unit_addr2;
710 unsigned short cula;
711 __u16 func_level;
712 char mcl_level[QETH_MCL_LENGTH + 1];
713 /* doubleword below corresponds to net_if_token */
714 u16 ddev_devno;
715 u8 cssid;
716 u8 iid;
717 u8 ssid;
718 u8 chpid;
719 u16 chid;
720 u8 ids_valid:1; /* cssid,iid,chid */
721 u8 dev_addr_is_registered:1;
722 u8 open_when_online:1;
723 u8 promisc_mode:1;
724 u8 use_v1_blkt:1;
725 u8 is_vm_nic:1;
726 /* no bitfield, we take a pointer on these two: */
727 u8 has_lp2lp_cso_v6;
728 u8 has_lp2lp_cso_v4;
729 enum qeth_pnso_mode pnso_mode;
730 enum qeth_card_types type;
731 enum qeth_link_types link_type;
732 int broadcast_capable;
733 bool layer_enforced;
734 struct qeth_card_blkt blkt;
735 __u32 diagass_support;
736 __u32 hwtrap;
737 };
738
739 enum qeth_discipline_id {
740 QETH_DISCIPLINE_UNDETERMINED = -1,
741 QETH_DISCIPLINE_LAYER3 = 0,
742 QETH_DISCIPLINE_LAYER2 = 1,
743 };
744
745 struct qeth_card_options {
746 struct qeth_ipa_caps ipa4;
747 struct qeth_ipa_caps ipa6;
748 struct qeth_routing_info route4;
749 struct qeth_routing_info route6;
750 struct qeth_ipa_caps adp; /* Adapter parameters */
751 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
752 struct qeth_vnicc_info vnicc; /* VNICC options */
753 enum qeth_discipline_id layer;
754 enum qeth_ipa_isolation_modes isolation;
755 int sniffer;
756 enum qeth_cq cq;
757 char hsuid[9];
758 };
759
760 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2)
761 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3)
762
763 /*
764 * thread bits for qeth_card thread masks
765 */
766 enum qeth_threads {
767 QETH_RECOVER_THREAD = 1,
768 };
769
770 struct qeth_osn_info {
771 int (*assist_cb)(struct net_device *dev, void *data);
772 int (*data_cb)(struct sk_buff *skb);
773 };
774
775 struct qeth_discipline {
776 const struct device_type *devtype;
777 int (*setup) (struct ccwgroup_device *);
778 void (*remove) (struct ccwgroup_device *);
779 int (*set_online)(struct qeth_card *card, bool carrier_ok);
780 void (*set_offline)(struct qeth_card *card);
781 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
782 int (*control_event_handler)(struct qeth_card *card,
783 struct qeth_ipa_cmd *cmd);
784 };
785
786 enum qeth_addr_disposition {
787 QETH_DISP_ADDR_DELETE = 0,
788 QETH_DISP_ADDR_DO_NOTHING = 1,
789 QETH_DISP_ADDR_ADD = 2,
790 };
791
792 struct qeth_rx {
793 int b_count;
794 int b_index;
795 u8 buf_element;
796 int e_offset;
797 int qdio_err;
798 u8 bufs_refill;
799 };
800
801 struct carrier_info {
802 __u8 card_type;
803 __u16 port_mode;
804 __u32 port_speed;
805 };
806
807 struct qeth_switch_info {
808 __u32 capabilities;
809 __u32 settings;
810 };
811
812 struct qeth_priv {
813 unsigned int rx_copybreak;
814 unsigned int tx_wanted_queues;
815 u32 brport_hw_features;
816 u32 brport_features;
817 };
818
819 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
820
821 struct qeth_card {
822 enum qeth_card_states state;
823 spinlock_t lock;
824 struct ccwgroup_device *gdev;
825 struct qeth_cmd_buffer *read_cmd;
826 struct qeth_channel read;
827 struct qeth_channel write;
828 struct qeth_channel data;
829
830 struct net_device *dev;
831 struct dentry *debugfs;
832 struct qeth_card_stats stats;
833 struct qeth_card_info info;
834 struct qeth_token token;
835 struct qeth_seqno seqno;
836 struct qeth_card_options options;
837
838 struct workqueue_struct *event_wq;
839 struct workqueue_struct *cmd_wq;
840 wait_queue_head_t wait_q;
841
842 struct mutex ip_lock;
843 /* protected by ip_lock: */
844 DECLARE_HASHTABLE(ip_htable, 4);
845 struct qeth_ipato ipato;
846
847 DECLARE_HASHTABLE(local_addrs4, 4);
848 DECLARE_HASHTABLE(local_addrs6, 4);
849 spinlock_t local_addrs4_lock;
850 spinlock_t local_addrs6_lock;
851 DECLARE_HASHTABLE(rx_mode_addrs, 4);
852 struct work_struct rx_mode_work;
853 struct work_struct kernel_thread_starter;
854 spinlock_t thread_mask_lock;
855 unsigned long thread_start_mask;
856 unsigned long thread_allowed_mask;
857 unsigned long thread_running_mask;
858 struct list_head cmd_waiter_list;
859 /* QDIO buffer handling */
860 struct qeth_qdio_info qdio;
861 int read_or_write_problem;
862 struct qeth_osn_info osn_info;
863 const struct qeth_discipline *discipline;
864 atomic_t force_alloc_skb;
865 struct service_level qeth_service_level;
866 struct qdio_ssqd_desc ssqd;
867 debug_info_t *debug;
868 struct mutex sbp_lock;
869 struct mutex conf_mutex;
870 struct mutex discipline_mutex;
871 struct napi_struct napi;
872 struct qeth_rx rx;
873 struct delayed_work buffer_reclaim_work;
874 struct work_struct close_dev_work;
875 };
876
qeth_card_hw_is_reachable(struct qeth_card * card)877 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card)
878 {
879 return card->state == CARD_STATE_SOFTSETUP;
880 }
881
qeth_unlock_channel(struct qeth_card * card,struct qeth_channel * channel)882 static inline void qeth_unlock_channel(struct qeth_card *card,
883 struct qeth_channel *channel)
884 {
885 atomic_set(&channel->irq_pending, 0);
886 wake_up(&card->wait_q);
887 }
888
889 struct qeth_trap_id {
890 __u16 lparnr;
891 char vmname[8];
892 __u8 chpid;
893 __u8 ssid;
894 __u16 devno;
895 } __packed;
896
qeth_uses_tx_prio_queueing(struct qeth_card * card)897 static inline bool qeth_uses_tx_prio_queueing(struct qeth_card *card)
898 {
899 return card->qdio.do_prio_queueing != QETH_NO_PRIO_QUEUEING;
900 }
901
qeth_tx_actual_queues(struct qeth_card * card)902 static inline unsigned int qeth_tx_actual_queues(struct qeth_card *card)
903 {
904 struct qeth_priv *priv = netdev_priv(card->dev);
905
906 if (qeth_uses_tx_prio_queueing(card))
907 return min(card->dev->num_tx_queues, card->qdio.no_out_queues);
908
909 return min(priv->tx_wanted_queues, card->qdio.no_out_queues);
910 }
911
qeth_iqd_translate_txq(struct net_device * dev,u16 txq)912 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq)
913 {
914 if (txq == QETH_IQD_MCAST_TXQ)
915 return dev->num_tx_queues - 1;
916 if (txq == dev->num_tx_queues - 1)
917 return QETH_IQD_MCAST_TXQ;
918 return txq;
919 }
920
qeth_iqd_is_mcast_queue(struct qeth_card * card,struct qeth_qdio_out_q * queue)921 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card,
922 struct qeth_qdio_out_q *queue)
923 {
924 return qeth_iqd_translate_txq(card->dev, queue->queue_no) ==
925 QETH_IQD_MCAST_TXQ;
926 }
927
qeth_scrub_qdio_buffer(struct qdio_buffer * buf,unsigned int elements)928 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf,
929 unsigned int elements)
930 {
931 unsigned int i;
932
933 for (i = 0; i < elements; i++)
934 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element));
935 buf->element[14].sflags = 0;
936 buf->element[15].sflags = 0;
937 }
938
939 /**
940 * qeth_get_elements_for_range() - find number of SBALEs to cover range.
941 * @start: Start of the address range.
942 * @end: Address after the end of the range.
943 *
944 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
945 * the specified address range.
946 */
qeth_get_elements_for_range(addr_t start,addr_t end)947 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
948 {
949 return PFN_UP(end) - PFN_DOWN(start);
950 }
951
qeth_get_ip_version(struct sk_buff * skb)952 static inline int qeth_get_ip_version(struct sk_buff *skb)
953 {
954 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
955 __be16 prot = veth->h_vlan_proto;
956
957 if (prot == htons(ETH_P_8021Q))
958 prot = veth->h_vlan_encapsulated_proto;
959
960 switch (prot) {
961 case htons(ETH_P_IPV6):
962 return 6;
963 case htons(ETH_P_IP):
964 return 4;
965 default:
966 return 0;
967 }
968 }
969
qeth_get_ether_cast_type(struct sk_buff * skb)970 static inline int qeth_get_ether_cast_type(struct sk_buff *skb)
971 {
972 u8 *addr = eth_hdr(skb)->h_dest;
973
974 if (is_multicast_ether_addr(addr))
975 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST :
976 RTN_MULTICAST;
977 return RTN_UNICAST;
978 }
979
qeth_dst_check_rcu(struct sk_buff * skb,int ipv)980 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv)
981 {
982 struct dst_entry *dst = skb_dst(skb);
983 struct rt6_info *rt;
984
985 rt = (struct rt6_info *) dst;
986 if (dst)
987 dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0);
988 return dst;
989 }
990
qeth_next_hop_v4_rcu(struct sk_buff * skb,struct dst_entry * dst)991 static inline __be32 qeth_next_hop_v4_rcu(struct sk_buff *skb,
992 struct dst_entry *dst)
993 {
994 struct rtable *rt = (struct rtable *) dst;
995
996 return (rt) ? rt_nexthop(rt, ip_hdr(skb)->daddr) : ip_hdr(skb)->daddr;
997 }
998
qeth_next_hop_v6_rcu(struct sk_buff * skb,struct dst_entry * dst)999 static inline struct in6_addr *qeth_next_hop_v6_rcu(struct sk_buff *skb,
1000 struct dst_entry *dst)
1001 {
1002 struct rt6_info *rt = (struct rt6_info *) dst;
1003
1004 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
1005 return &rt->rt6i_gateway;
1006 else
1007 return &ipv6_hdr(skb)->daddr;
1008 }
1009
qeth_tx_csum(struct sk_buff * skb,u8 * flags,int ipv)1010 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv)
1011 {
1012 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
1013 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
1014 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP))
1015 *flags |= QETH_HDR_EXT_UDP;
1016 }
1017
qeth_put_buffer_pool_entry(struct qeth_card * card,struct qeth_buffer_pool_entry * entry)1018 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
1019 struct qeth_buffer_pool_entry *entry)
1020 {
1021 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
1022 }
1023
qeth_is_diagass_supported(struct qeth_card * card,enum qeth_diags_cmds cmd)1024 static inline int qeth_is_diagass_supported(struct qeth_card *card,
1025 enum qeth_diags_cmds cmd)
1026 {
1027 return card->info.diagass_support & (__u32)cmd;
1028 }
1029
1030 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
1031 enum qeth_ipa_funcs ipa_func,
1032 u16 cmd_code, u32 *data,
1033 enum qeth_prot_versions prot);
1034 /* IPv4 variant */
qeth_send_simple_setassparms(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,u16 cmd_code,u32 * data)1035 static inline int qeth_send_simple_setassparms(struct qeth_card *card,
1036 enum qeth_ipa_funcs ipa_func,
1037 u16 cmd_code, u32 *data)
1038 {
1039 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
1040 data, QETH_PROT_IPV4);
1041 }
1042
qeth_send_simple_setassparms_v6(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,u16 cmd_code,u32 * data)1043 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
1044 enum qeth_ipa_funcs ipa_func,
1045 u16 cmd_code, u32 *data)
1046 {
1047 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
1048 data, QETH_PROT_IPV6);
1049 }
1050
1051 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb);
1052
1053 extern const struct qeth_discipline qeth_l2_discipline;
1054 extern const struct qeth_discipline qeth_l3_discipline;
1055 extern const struct ethtool_ops qeth_ethtool_ops;
1056 extern const struct ethtool_ops qeth_osn_ethtool_ops;
1057 extern const struct attribute_group *qeth_generic_attr_groups[];
1058 extern const struct attribute_group *qeth_osn_attr_groups[];
1059 extern const struct attribute_group qeth_device_attr_group;
1060 extern const struct attribute_group qeth_device_blkt_group;
1061 extern const struct device_type qeth_generic_devtype;
1062
1063 const char *qeth_get_cardname_short(struct qeth_card *);
1064 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count);
1065 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
1066 void qeth_core_free_discipline(struct qeth_card *);
1067
1068 /* exports for qeth discipline device drivers */
1069 extern struct kmem_cache *qeth_core_header_cache;
1070 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
1071
1072 struct net_device *qeth_clone_netdev(struct net_device *orig);
1073 struct qeth_card *qeth_get_card_by_busid(char *bus_id);
1074 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
1075 int clear_start_mask);
1076 int qeth_threads_running(struct qeth_card *, unsigned long);
1077 int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
1078 bool resetting);
1079
1080 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
1081 int (*reply_cb)
1082 (struct qeth_card *, struct qeth_reply *, unsigned long),
1083 void *);
1084 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
1085 enum qeth_ipa_cmds cmd_code,
1086 enum qeth_prot_versions prot,
1087 unsigned int data_length);
1088 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
1089 unsigned int length, unsigned int ccws,
1090 long timeout);
1091 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
1092 enum qeth_ipa_funcs ipa_func,
1093 u16 cmd_code,
1094 unsigned int data_length,
1095 enum qeth_prot_versions prot);
1096 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
1097 enum qeth_diags_cmds sub_cmd,
1098 unsigned int data_length);
1099 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason);
1100 void qeth_put_cmd(struct qeth_cmd_buffer *iob);
1101
1102 int qeth_schedule_recovery(struct qeth_card *card);
1103 int qeth_poll(struct napi_struct *napi, int budget);
1104 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable);
1105 int qeth_setadpparms_change_macaddr(struct qeth_card *);
1106 void qeth_tx_timeout(struct net_device *, unsigned int txqueue);
1107 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
1108 u16 cmd_length,
1109 bool (*match)(struct qeth_cmd_buffer *iob,
1110 struct qeth_cmd_buffer *reply));
1111 int qeth_query_switch_attributes(struct qeth_card *card,
1112 struct qeth_switch_info *sw_info);
1113 int qeth_query_card_info(struct qeth_card *card,
1114 struct carrier_info *carrier_info);
1115 int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
1116 enum qeth_ipa_isolation_modes mode);
1117
1118 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset);
1119 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
1120 struct sk_buff *skb, struct qeth_hdr *hdr,
1121 unsigned int offset, unsigned int hd_len,
1122 int elements_needed);
1123 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
1124 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
1125 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
1126 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
1127 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
1128 int qeth_set_features(struct net_device *, netdev_features_t);
1129 void qeth_enable_hw_features(struct net_device *dev);
1130 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
1131 netdev_features_t qeth_features_check(struct sk_buff *skb,
1132 struct net_device *dev,
1133 netdev_features_t features);
1134 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
1135 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count);
1136 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1137 u8 cast_type, struct net_device *sb_dev);
1138 int qeth_open(struct net_device *dev);
1139 int qeth_stop(struct net_device *dev);
1140
1141 int qeth_vm_request_mac(struct qeth_card *card);
1142 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
1143 struct qeth_qdio_out_q *queue, int ipv,
1144 void (*fill_header)(struct qeth_qdio_out_q *queue,
1145 struct qeth_hdr *hdr, struct sk_buff *skb,
1146 int ipv, unsigned int data_len));
1147
1148 /* exports for OSN */
1149 int qeth_osn_assist(struct net_device *, void *, int);
1150 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
1151 int (*assist_cb)(struct net_device *, void *),
1152 int (*data_cb)(struct sk_buff *));
1153 void qeth_osn_deregister(struct net_device *);
1154
1155 #endif /* __QETH_CORE_H__ */
1156