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