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 {
263 union {
264 struct qeth_hdr_layer2 l2;
265 struct qeth_hdr_layer3 l3;
266 } hdr;
267 } __attribute__ ((packed));
268
269 #define QETH_QIB_PQUE_ORDER_RR 0
270 #define QETH_QIB_PQUE_UNITS_SBAL 2
271 #define QETH_QIB_PQUE_PRIO_DEFAULT 4
272
273 struct qeth_qib_parms {
274 char pcit_magic[4];
275 u32 pcit_a;
276 u32 pcit_b;
277 u32 pcit_c;
278 char blkt_magic[4];
279 u32 blkt_total;
280 u32 blkt_inter_packet;
281 u32 blkt_inter_packet_jumbo;
282 char pque_magic[4];
283 u8 pque_order;
284 u8 pque_units;
285 u16 reserved;
286 u32 pque_priority[4];
287 };
288
289 /*TCP Segmentation Offload header*/
290 struct qeth_hdr_ext_tso {
291 __u16 hdr_tot_len;
292 __u8 imb_hdr_no;
293 __u8 reserved;
294 __u8 hdr_type;
295 __u8 hdr_version;
296 __u16 hdr_len;
297 __u32 payload_len;
298 __u16 mss;
299 __u16 dg_hdr_len;
300 __u8 padding[16];
301 } __attribute__ ((packed));
302
303 struct qeth_hdr_tso {
304 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
305 struct qeth_hdr_ext_tso ext;
306 } __attribute__ ((packed));
307
308
309 /* flags for qeth_hdr.flags */
310 #define QETH_HDR_PASSTHRU 0x10
311 #define QETH_HDR_IPV6 0x80
312 #define QETH_HDR_CAST_MASK 0x07
313 enum qeth_cast_flags {
314 QETH_CAST_UNICAST = 0x06,
315 QETH_CAST_MULTICAST = 0x04,
316 QETH_CAST_BROADCAST = 0x05,
317 QETH_CAST_ANYCAST = 0x07,
318 QETH_CAST_NOCAST = 0x00,
319 };
320
321 enum qeth_layer2_frame_flags {
322 QETH_LAYER2_FLAG_MULTICAST = 0x01,
323 QETH_LAYER2_FLAG_BROADCAST = 0x02,
324 QETH_LAYER2_FLAG_UNICAST = 0x04,
325 QETH_LAYER2_FLAG_VLAN = 0x10,
326 };
327
328 enum qeth_header_ids {
329 QETH_HEADER_TYPE_LAYER3 = 0x01,
330 QETH_HEADER_TYPE_LAYER2 = 0x02,
331 QETH_HEADER_TYPE_L3_TSO = 0x03,
332 QETH_HEADER_TYPE_L2_TSO = 0x06,
333 QETH_HEADER_MASK_INVAL = 0x80,
334 };
335 /* flags for qeth_hdr.ext_flags */
336 #define QETH_HDR_EXT_VLAN_FRAME 0x01
337 #define QETH_HDR_EXT_TOKEN_ID 0x02
338 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
339 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08
340 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10
341 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20
342 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/
343
qeth_l2_same_vlan(struct qeth_hdr_layer2 * h1,struct qeth_hdr_layer2 * h2)344 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1,
345 struct qeth_hdr_layer2 *h2)
346 {
347 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) &&
348 h1->vlan_id == h2->vlan_id;
349 }
350
qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 * h1,struct qeth_hdr_layer3 * h2)351 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1,
352 struct qeth_hdr_layer3 *h2)
353 {
354 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) &&
355 h1->vlan_id == h2->vlan_id;
356 }
357
qeth_l3_same_next_hop(struct qeth_hdr_layer3 * h1,struct qeth_hdr_layer3 * h2)358 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1,
359 struct qeth_hdr_layer3 *h2)
360 {
361 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) &&
362 ipv6_addr_equal(&h1->next_hop.addr, &h2->next_hop.addr);
363 }
364
365 struct qeth_local_addr {
366 struct hlist_node hnode;
367 struct rcu_head rcu;
368 struct in6_addr addr;
369 };
370
371 enum qeth_qdio_info_states {
372 QETH_QDIO_UNINITIALIZED,
373 QETH_QDIO_ALLOCATED,
374 QETH_QDIO_ESTABLISHED,
375 QETH_QDIO_CLEANING
376 };
377
378 struct qeth_buffer_pool_entry {
379 struct list_head list;
380 struct list_head init_list;
381 struct page *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
382 };
383
384 struct qeth_qdio_buffer_pool {
385 struct list_head entry_list;
386 int buf_count;
387 };
388
389 struct qeth_qdio_buffer {
390 struct qdio_buffer *buffer;
391 /* the buffer pool entry currently associated to this buffer */
392 struct qeth_buffer_pool_entry *pool_entry;
393 struct sk_buff *rx_skb;
394 };
395
396 struct qeth_qdio_q {
397 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
398 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
399 int next_buf_to_init;
400 };
401
402 enum qeth_qdio_out_buffer_state {
403 /* Owned by driver, in order to be filled. */
404 QETH_QDIO_BUF_EMPTY,
405 /* Filled by driver; owned by hardware in order to be sent. */
406 QETH_QDIO_BUF_PRIMED,
407 };
408
409 enum qeth_qaob_state {
410 QETH_QAOB_ISSUED,
411 QETH_QAOB_PENDING,
412 QETH_QAOB_DONE,
413 };
414
415 struct qeth_qaob_priv1 {
416 unsigned int state;
417 u8 queue_no;
418 };
419
420 struct qeth_qdio_out_buffer {
421 struct qdio_buffer *buffer;
422 atomic_t state;
423 int next_element_to_fill;
424 unsigned int frames;
425 unsigned int bytes;
426 struct sk_buff_head skb_list;
427 DECLARE_BITMAP(from_kmem_cache, QDIO_MAX_ELEMENTS_PER_BUFFER);
428
429 struct list_head list_entry;
430 struct qaob *aob;
431 };
432
433 struct qeth_card;
434
435 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val))
436 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1)
437
438 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val))
439 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1)
440
441 struct qeth_card_stats {
442 u64 rx_bufs;
443 u64 rx_skb_csum;
444 u64 rx_sg_skbs;
445 u64 rx_sg_frags;
446 u64 rx_sg_alloc_page;
447
448 u64 rx_dropped_nomem;
449 u64 rx_dropped_notsupp;
450 u64 rx_dropped_runt;
451
452 /* rtnl_link_stats64 */
453 u64 rx_packets;
454 u64 rx_bytes;
455 u64 rx_multicast;
456 u64 rx_length_errors;
457 u64 rx_frame_errors;
458 u64 rx_fifo_errors;
459 };
460
461 struct qeth_out_q_stats {
462 u64 bufs;
463 u64 bufs_pack;
464 u64 buf_elements;
465 u64 skbs_pack;
466 u64 skbs_sg;
467 u64 skbs_csum;
468 u64 skbs_tso;
469 u64 skbs_linearized;
470 u64 skbs_linearized_fail;
471 u64 tso_bytes;
472 u64 packing_mode_switch;
473 u64 stopped;
474 u64 doorbell;
475 u64 coal_frames;
476 u64 completion_irq;
477 u64 completion_yield;
478 u64 completion_timer;
479
480 /* rtnl_link_stats64 */
481 u64 tx_packets;
482 u64 tx_bytes;
483 u64 tx_errors;
484 u64 tx_dropped;
485 };
486
487 #define QETH_TX_MAX_COALESCED_FRAMES 1
488 #define QETH_TX_COALESCE_USECS 25
489 #define QETH_TX_TIMER_USECS 500
490
491 struct qeth_qdio_out_q {
492 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
493 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
494 struct list_head pending_bufs;
495 struct qeth_out_q_stats stats;
496 spinlock_t lock;
497 unsigned int priority;
498 u8 next_buf_to_fill;
499 u8 max_elements;
500 u8 queue_no;
501 u8 do_pack;
502 struct qeth_card *card;
503 /*
504 * number of buffers that are currently filled (PRIMED)
505 * -> these buffers are hardware-owned
506 */
507 atomic_t used_buffers;
508 /* indicates whether PCI flag must be set (or if one is outstanding) */
509 atomic_t set_pci_flags_count;
510 struct napi_struct napi;
511 struct timer_list timer;
512 struct qeth_hdr *prev_hdr;
513 unsigned int coalesced_frames;
514 u8 bulk_start;
515 u8 bulk_count;
516 u8 bulk_max;
517
518 unsigned int coalesce_usecs;
519 unsigned int max_coalesced_frames;
520 unsigned int rescan_usecs;
521 };
522
523 #define qeth_for_each_output_queue(card, q, i) \
524 for (i = 0; i < card->qdio.no_out_queues && \
525 (q = card->qdio.out_qs[i]); i++)
526
527 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi)
528
qeth_tx_arm_timer(struct qeth_qdio_out_q * queue,unsigned long usecs)529 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue,
530 unsigned long usecs)
531 {
532 timer_reduce(&queue->timer, usecs_to_jiffies(usecs) + jiffies);
533 }
534
qeth_out_queue_is_full(struct qeth_qdio_out_q * queue)535 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue)
536 {
537 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q;
538 }
539
qeth_out_queue_is_empty(struct qeth_qdio_out_q * queue)540 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue)
541 {
542 return atomic_read(&queue->used_buffers) == 0;
543 }
544
545 struct qeth_qdio_info {
546 atomic_t state;
547 /* input */
548 struct qeth_qdio_q *in_q;
549 struct qeth_qdio_q *c_q;
550 struct qeth_qdio_buffer_pool in_buf_pool;
551 struct qeth_qdio_buffer_pool init_pool;
552 int in_buf_size;
553
554 /* output */
555 unsigned int no_out_queues;
556 struct qeth_qdio_out_q *out_qs[QETH_MAX_OUT_QUEUES];
557
558 /* priority queueing */
559 int do_prio_queueing;
560 int default_out_queue;
561 };
562
563 /**
564 * channel state machine
565 */
566 enum qeth_channel_states {
567 CH_STATE_UP,
568 CH_STATE_DOWN,
569 CH_STATE_HALTED,
570 CH_STATE_STOPPED,
571 };
572 /**
573 * card state machine
574 */
575 enum qeth_card_states {
576 CARD_STATE_DOWN,
577 CARD_STATE_SOFTSETUP,
578 };
579
580 /**
581 * Protocol versions
582 */
583 enum qeth_prot_versions {
584 QETH_PROT_NONE = 0x0000,
585 QETH_PROT_IPV4 = 0x0004,
586 QETH_PROT_IPV6 = 0x0006,
587 };
588
589 enum qeth_cq {
590 QETH_CQ_DISABLED = 0,
591 QETH_CQ_ENABLED = 1,
592 QETH_CQ_NOTAVAILABLE = 2,
593 };
594
595 struct qeth_ipato {
596 bool enabled;
597 bool invert4;
598 bool invert6;
599 struct list_head entries;
600 };
601
602 struct qeth_channel {
603 struct ccw_device *ccwdev;
604 struct qeth_cmd_buffer *active_cmd;
605 enum qeth_channel_states state;
606 };
607
608 struct qeth_reply {
609 int (*callback)(struct qeth_card *card, struct qeth_reply *reply,
610 unsigned long data);
611 void *param;
612 };
613
614 struct qeth_cmd_buffer {
615 struct list_head list_entry;
616 struct completion done;
617 spinlock_t lock;
618 unsigned int length;
619 refcount_t ref_count;
620 struct qeth_channel *channel;
621 struct qeth_reply reply;
622 long timeout;
623 unsigned char *data;
624 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
625 bool (*match)(struct qeth_cmd_buffer *iob,
626 struct qeth_cmd_buffer *reply);
627 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob,
628 unsigned int data_length);
629 int rc;
630 };
631
qeth_get_cmd(struct qeth_cmd_buffer * iob)632 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob)
633 {
634 refcount_inc(&iob->ref_count);
635 }
636
__ipa_reply(struct qeth_cmd_buffer * iob)637 static inline struct qeth_ipa_cmd *__ipa_reply(struct qeth_cmd_buffer *iob)
638 {
639 if (!IS_IPA(iob->data))
640 return NULL;
641
642 return (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
643 }
644
__ipa_cmd(struct qeth_cmd_buffer * iob)645 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
646 {
647 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
648 }
649
__ccw_from_cmd(struct qeth_cmd_buffer * iob)650 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob)
651 {
652 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8));
653 }
654
655 /**
656 * OSA card related definitions
657 */
658 struct qeth_token {
659 __u32 issuer_rm_w;
660 __u32 issuer_rm_r;
661 __u32 cm_filter_w;
662 __u32 cm_filter_r;
663 __u32 cm_connection_w;
664 __u32 cm_connection_r;
665 __u32 ulp_filter_w;
666 __u32 ulp_filter_r;
667 __u32 ulp_connection_w;
668 __u32 ulp_connection_r;
669 };
670
671 struct qeth_seqno {
672 __u32 trans_hdr;
673 __u32 pdu_hdr;
674 __u32 pdu_hdr_ack;
675 __u16 ipa;
676 };
677
678 struct qeth_card_blkt {
679 int time_total;
680 int inter_packet;
681 int inter_packet_jumbo;
682 };
683
684 enum qeth_pnso_mode {
685 QETH_PNSO_NONE,
686 QETH_PNSO_BRIDGEPORT,
687 QETH_PNSO_ADDR_INFO,
688 };
689
690 enum qeth_link_mode {
691 QETH_LINK_MODE_UNKNOWN,
692 QETH_LINK_MODE_FIBRE_SHORT,
693 QETH_LINK_MODE_FIBRE_LONG,
694 };
695
696 struct qeth_link_info {
697 u32 speed;
698 u8 duplex;
699 u8 port;
700 enum qeth_link_mode link_mode;
701 };
702
703 #define QETH_BROADCAST_WITH_ECHO 0x01
704 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
705 struct qeth_card_info {
706 unsigned short unit_addr2;
707 unsigned short cula;
708 __u16 func_level;
709 char mcl_level[QETH_MCL_LENGTH + 1];
710 /* doubleword below corresponds to net_if_token */
711 u16 ddev_devno;
712 u8 cssid;
713 u8 iid;
714 u8 ssid;
715 u8 chpid;
716 u16 chid;
717 u8 ids_valid:1; /* cssid,iid,chid */
718 u8 dev_addr_is_registered:1;
719 u8 promisc_mode:1;
720 u8 use_v1_blkt:1;
721 u8 is_vm_nic:1;
722 /* no bitfield, we take a pointer on these two: */
723 u8 has_lp2lp_cso_v6;
724 u8 has_lp2lp_cso_v4;
725 enum qeth_pnso_mode pnso_mode;
726 enum qeth_card_types type;
727 enum qeth_link_types link_type;
728 int broadcast_capable;
729 bool layer_enforced;
730 struct qeth_card_blkt blkt;
731 __u32 diagass_support;
732 __u32 hwtrap;
733 struct qeth_link_info link_info;
734 };
735
736 enum qeth_discipline_id {
737 QETH_DISCIPLINE_UNDETERMINED = -1,
738 QETH_DISCIPLINE_LAYER3 = 0,
739 QETH_DISCIPLINE_LAYER2 = 1,
740 };
741
742 struct qeth_card_options {
743 struct qeth_ipa_caps ipa4;
744 struct qeth_ipa_caps ipa6;
745 struct qeth_routing_info route4;
746 struct qeth_routing_info route6;
747 struct qeth_ipa_caps adp; /* Adapter parameters */
748 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
749 struct qeth_vnicc_info vnicc; /* VNICC options */
750 enum qeth_discipline_id layer;
751 enum qeth_ipa_isolation_modes isolation;
752 int sniffer;
753 enum qeth_cq cq;
754 char hsuid[9];
755 };
756
757 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2)
758 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3)
759
760 /*
761 * thread bits for qeth_card thread masks
762 */
763 enum qeth_threads {
764 QETH_RECOVER_THREAD = 1,
765 };
766
767 struct qeth_discipline {
768 int (*setup) (struct ccwgroup_device *);
769 void (*remove) (struct ccwgroup_device *);
770 int (*set_online)(struct qeth_card *card, bool carrier_ok);
771 void (*set_offline)(struct qeth_card *card);
772 int (*control_event_handler)(struct qeth_card *card,
773 struct qeth_ipa_cmd *cmd);
774 };
775
776 enum qeth_addr_disposition {
777 QETH_DISP_ADDR_DELETE = 0,
778 QETH_DISP_ADDR_DO_NOTHING = 1,
779 QETH_DISP_ADDR_ADD = 2,
780 };
781
782 struct qeth_rx {
783 int b_count;
784 int b_index;
785 u8 buf_element;
786 int e_offset;
787 int qdio_err;
788 u8 bufs_refill;
789 };
790
791 struct qeth_switch_info {
792 __u32 capabilities;
793 __u32 settings;
794 };
795
796 struct qeth_priv {
797 unsigned int rx_copybreak;
798 unsigned int tx_wanted_queues;
799 u32 brport_hw_features;
800 u32 brport_features;
801 };
802
803 struct qeth_card {
804 enum qeth_card_states state;
805 spinlock_t lock;
806 struct ccwgroup_device *gdev;
807 struct qeth_cmd_buffer *read_cmd;
808 struct qeth_channel read;
809 struct qeth_channel write;
810 struct qeth_channel data;
811
812 struct net_device *dev;
813 struct dentry *debugfs;
814 struct qeth_card_stats stats;
815 struct qeth_card_info info;
816 struct qeth_token token;
817 struct qeth_seqno seqno;
818 struct qeth_card_options options;
819
820 struct workqueue_struct *event_wq;
821 struct workqueue_struct *cmd_wq;
822 wait_queue_head_t wait_q;
823
824 struct mutex ip_lock;
825 /* protected by ip_lock: */
826 DECLARE_HASHTABLE(ip_htable, 4);
827 struct qeth_ipato ipato;
828
829 DECLARE_HASHTABLE(local_addrs4, 4);
830 DECLARE_HASHTABLE(local_addrs6, 4);
831 spinlock_t local_addrs4_lock;
832 spinlock_t local_addrs6_lock;
833 DECLARE_HASHTABLE(rx_mode_addrs, 4);
834 struct work_struct rx_mode_work;
835 struct work_struct kernel_thread_starter;
836 spinlock_t thread_mask_lock;
837 unsigned long thread_start_mask;
838 unsigned long thread_allowed_mask;
839 unsigned long thread_running_mask;
840 struct list_head cmd_waiter_list;
841 /* QDIO buffer handling */
842 struct qeth_qdio_info qdio;
843 int read_or_write_problem;
844 const struct qeth_discipline *discipline;
845 atomic_t force_alloc_skb;
846 struct service_level qeth_service_level;
847 struct qdio_ssqd_desc ssqd;
848 debug_info_t *debug;
849 struct mutex sbp_lock;
850 struct mutex conf_mutex;
851 struct mutex discipline_mutex;
852 struct napi_struct napi;
853 struct qeth_rx rx;
854 struct delayed_work buffer_reclaim_work;
855 };
856
qeth_card_hw_is_reachable(struct qeth_card * card)857 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card)
858 {
859 return card->state == CARD_STATE_SOFTSETUP;
860 }
861
qeth_use_tx_irqs(struct qeth_card * card)862 static inline bool qeth_use_tx_irqs(struct qeth_card *card)
863 {
864 return !IS_IQD(card);
865 }
866
qeth_unlock_channel(struct qeth_card * card,struct qeth_channel * channel)867 static inline void qeth_unlock_channel(struct qeth_card *card,
868 struct qeth_channel *channel)
869 {
870 xchg(&channel->active_cmd, NULL);
871 wake_up(&card->wait_q);
872 }
873
qeth_trylock_channel(struct qeth_channel * channel,struct qeth_cmd_buffer * cmd)874 static inline bool qeth_trylock_channel(struct qeth_channel *channel,
875 struct qeth_cmd_buffer *cmd)
876 {
877 return cmpxchg(&channel->active_cmd, NULL, cmd) == NULL;
878 }
879
880 struct qeth_trap_id {
881 __u16 lparnr;
882 char vmname[8];
883 __u8 chpid;
884 __u8 ssid;
885 __u16 devno;
886 } __packed;
887
qeth_uses_tx_prio_queueing(struct qeth_card * card)888 static inline bool qeth_uses_tx_prio_queueing(struct qeth_card *card)
889 {
890 return card->qdio.do_prio_queueing != QETH_NO_PRIO_QUEUEING;
891 }
892
qeth_tx_actual_queues(struct qeth_card * card)893 static inline unsigned int qeth_tx_actual_queues(struct qeth_card *card)
894 {
895 struct qeth_priv *priv = netdev_priv(card->dev);
896
897 if (qeth_uses_tx_prio_queueing(card))
898 return min(card->dev->num_tx_queues, card->qdio.no_out_queues);
899
900 return min(priv->tx_wanted_queues, card->qdio.no_out_queues);
901 }
902
qeth_iqd_translate_txq(struct net_device * dev,u16 txq)903 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq)
904 {
905 if (txq == QETH_IQD_MCAST_TXQ)
906 return dev->num_tx_queues - 1;
907 if (txq == dev->num_tx_queues - 1)
908 return QETH_IQD_MCAST_TXQ;
909 return txq;
910 }
911
qeth_iqd_is_mcast_queue(struct qeth_card * card,struct qeth_qdio_out_q * queue)912 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card,
913 struct qeth_qdio_out_q *queue)
914 {
915 return qeth_iqd_translate_txq(card->dev, queue->queue_no) ==
916 QETH_IQD_MCAST_TXQ;
917 }
918
qeth_scrub_qdio_buffer(struct qdio_buffer * buf,unsigned int elements)919 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf,
920 unsigned int elements)
921 {
922 unsigned int i;
923
924 for (i = 0; i < elements; i++)
925 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element));
926 buf->element[14].sflags = 0;
927 buf->element[15].sflags = 0;
928 }
929
930 /**
931 * qeth_get_elements_for_range() - find number of SBALEs to cover range.
932 * @start: Start of the address range.
933 * @end: Address after the end of the range.
934 *
935 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
936 * the specified address range.
937 */
qeth_get_elements_for_range(addr_t start,addr_t end)938 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
939 {
940 return PFN_UP(end) - PFN_DOWN(start);
941 }
942
qeth_get_ether_cast_type(struct sk_buff * skb)943 static inline int qeth_get_ether_cast_type(struct sk_buff *skb)
944 {
945 u8 *addr = eth_hdr(skb)->h_dest;
946
947 if (is_multicast_ether_addr(addr))
948 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST :
949 RTN_MULTICAST;
950 return RTN_UNICAST;
951 }
952
qeth_dst_check_rcu(struct sk_buff * skb,__be16 proto)953 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb,
954 __be16 proto)
955 {
956 struct dst_entry *dst = skb_dst(skb);
957 struct rt6_info *rt;
958
959 rt = (struct rt6_info *) dst;
960 if (dst) {
961 if (proto == htons(ETH_P_IPV6))
962 dst = dst_check(dst, rt6_get_cookie(rt));
963 else
964 dst = dst_check(dst, 0);
965 }
966
967 return dst;
968 }
969
qeth_next_hop_v4_rcu(struct sk_buff * skb,struct dst_entry * dst)970 static inline __be32 qeth_next_hop_v4_rcu(struct sk_buff *skb,
971 struct dst_entry *dst)
972 {
973 struct rtable *rt = (struct rtable *) dst;
974
975 return (rt) ? rt_nexthop(rt, ip_hdr(skb)->daddr) : ip_hdr(skb)->daddr;
976 }
977
qeth_next_hop_v6_rcu(struct sk_buff * skb,struct dst_entry * dst)978 static inline struct in6_addr *qeth_next_hop_v6_rcu(struct sk_buff *skb,
979 struct dst_entry *dst)
980 {
981 struct rt6_info *rt = (struct rt6_info *) dst;
982
983 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
984 return &rt->rt6i_gateway;
985 else
986 return &ipv6_hdr(skb)->daddr;
987 }
988
qeth_tx_csum(struct sk_buff * skb,u8 * flags,__be16 proto)989 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, __be16 proto)
990 {
991 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
992 if ((proto == htons(ETH_P_IP) && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
993 (proto == htons(ETH_P_IPV6) && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP))
994 *flags |= QETH_HDR_EXT_UDP;
995 }
996
qeth_put_buffer_pool_entry(struct qeth_card * card,struct qeth_buffer_pool_entry * entry)997 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
998 struct qeth_buffer_pool_entry *entry)
999 {
1000 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
1001 }
1002
qeth_is_diagass_supported(struct qeth_card * card,enum qeth_diags_cmds cmd)1003 static inline int qeth_is_diagass_supported(struct qeth_card *card,
1004 enum qeth_diags_cmds cmd)
1005 {
1006 return card->info.diagass_support & (__u32)cmd;
1007 }
1008
1009 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
1010 enum qeth_ipa_funcs ipa_func,
1011 u16 cmd_code, u32 *data,
1012 enum qeth_prot_versions prot);
1013 /* IPv4 variant */
qeth_send_simple_setassparms(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,u16 cmd_code,u32 * data)1014 static inline int qeth_send_simple_setassparms(struct qeth_card *card,
1015 enum qeth_ipa_funcs ipa_func,
1016 u16 cmd_code, u32 *data)
1017 {
1018 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
1019 data, QETH_PROT_IPV4);
1020 }
1021
qeth_send_simple_setassparms_v6(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,u16 cmd_code,u32 * data)1022 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
1023 enum qeth_ipa_funcs ipa_func,
1024 u16 cmd_code, u32 *data)
1025 {
1026 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
1027 data, QETH_PROT_IPV6);
1028 }
1029
1030 extern const struct qeth_discipline qeth_l2_discipline;
1031 extern const struct qeth_discipline qeth_l3_discipline;
1032 extern const struct ethtool_ops qeth_ethtool_ops;
1033 extern const struct attribute_group *qeth_dev_groups[];
1034
1035 const char *qeth_get_cardname_short(struct qeth_card *);
1036 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count);
1037 int qeth_setup_discipline(struct qeth_card *card, enum qeth_discipline_id disc);
1038 void qeth_remove_discipline(struct qeth_card *card);
1039
1040 /* exports for qeth discipline device drivers */
1041 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
1042
1043 struct net_device *qeth_clone_netdev(struct net_device *orig);
1044 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
1045 int clear_start_mask);
1046 int qeth_threads_running(struct qeth_card *, unsigned long);
1047 int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
1048 bool resetting);
1049
1050 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
1051 int (*reply_cb)
1052 (struct qeth_card *, struct qeth_reply *, unsigned long),
1053 void *);
1054 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
1055 enum qeth_ipa_cmds cmd_code,
1056 enum qeth_prot_versions prot,
1057 unsigned int data_length);
1058 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
1059 enum qeth_ipa_funcs ipa_func,
1060 u16 cmd_code,
1061 unsigned int data_length,
1062 enum qeth_prot_versions prot);
1063 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
1064 enum qeth_diags_cmds sub_cmd,
1065 unsigned int data_length);
1066
1067 int qeth_schedule_recovery(struct qeth_card *card);
1068 int qeth_poll(struct napi_struct *napi, int budget);
1069 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable);
1070 int qeth_setadpparms_change_macaddr(struct qeth_card *);
1071 void qeth_tx_timeout(struct net_device *, unsigned int txqueue);
1072 int qeth_query_switch_attributes(struct qeth_card *card,
1073 struct qeth_switch_info *sw_info);
1074 int qeth_query_card_info(struct qeth_card *card,
1075 struct qeth_link_info *link_info);
1076 int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
1077 enum qeth_ipa_isolation_modes mode);
1078
1079 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
1080 int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq,
1081 void __user *data, int cmd);
1082 __printf(3, 4)
1083 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
1084 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
1085 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
1086 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
1087 int qeth_set_features(struct net_device *, netdev_features_t);
1088 void qeth_enable_hw_features(struct net_device *dev);
1089 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
1090 netdev_features_t qeth_features_check(struct sk_buff *skb,
1091 struct net_device *dev,
1092 netdev_features_t features);
1093 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
1094 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count);
1095 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1096 u8 cast_type, struct net_device *sb_dev);
1097 u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
1098 struct net_device *sb_dev);
1099 int qeth_open(struct net_device *dev);
1100 int qeth_stop(struct net_device *dev);
1101
1102 int qeth_vm_request_mac(struct qeth_card *card);
1103 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
1104 struct qeth_qdio_out_q *queue, __be16 proto,
1105 void (*fill_header)(struct qeth_qdio_out_q *queue,
1106 struct qeth_hdr *hdr, struct sk_buff *skb,
1107 __be16 proto, unsigned int data_len));
1108
1109 #endif /* __QETH_CORE_H__ */
1110