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