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 /* IPA stuff */ 129 struct qeth_ipa_info { 130 __u32 supported_funcs; 131 __u32 enabled_funcs; 132 }; 133 134 /* SETBRIDGEPORT stuff */ 135 enum qeth_sbp_roles { 136 QETH_SBP_ROLE_NONE = 0, 137 QETH_SBP_ROLE_PRIMARY = 1, 138 QETH_SBP_ROLE_SECONDARY = 2, 139 }; 140 141 enum qeth_sbp_states { 142 QETH_SBP_STATE_INACTIVE = 0, 143 QETH_SBP_STATE_STANDBY = 1, 144 QETH_SBP_STATE_ACTIVE = 2, 145 }; 146 147 #define QETH_SBP_HOST_NOTIFICATION 1 148 149 struct qeth_sbp_info { 150 __u32 supported_funcs; 151 enum qeth_sbp_roles role; 152 __u32 hostnotification:1; 153 __u32 reflect_promisc:1; 154 __u32 reflect_promisc_primary:1; 155 }; 156 157 struct qeth_vnicc_info { 158 /* supported/currently configured VNICCs; updated in IPA exchanges */ 159 u32 sup_chars; 160 u32 cur_chars; 161 /* supported commands: bitmasks which VNICCs support respective cmd */ 162 u32 set_char_sup; 163 u32 getset_timeout_sup; 164 /* timeout value for the learning characteristic */ 165 u32 learning_timeout; 166 /* characteristics wanted/configured by user */ 167 u32 wanted_chars; 168 /* has user explicitly enabled rx_bcast while online? */ 169 bool rx_bcast_enabled; 170 }; 171 172 static inline int qeth_is_adp_supported(struct qeth_ipa_info *ipa, 173 enum qeth_ipa_setadp_cmd func) 174 { 175 return (ipa->supported_funcs & func); 176 } 177 178 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa, 179 enum qeth_ipa_funcs func) 180 { 181 return (ipa->supported_funcs & func); 182 } 183 184 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, 185 enum qeth_ipa_funcs func) 186 { 187 return (ipa->supported_funcs & ipa->enabled_funcs & func); 188 } 189 190 #define qeth_adp_supported(c, f) \ 191 qeth_is_adp_supported(&c->options.adp, f) 192 #define qeth_is_supported(c, f) \ 193 qeth_is_ipa_supported(&c->options.ipa4, f) 194 #define qeth_is_enabled(c, f) \ 195 qeth_is_ipa_enabled(&c->options.ipa4, f) 196 #define qeth_is_supported6(c, f) \ 197 qeth_is_ipa_supported(&c->options.ipa6, f) 198 #define qeth_is_enabled6(c, f) \ 199 qeth_is_ipa_enabled(&c->options.ipa6, f) 200 #define qeth_is_ipafunc_supported(c, prot, f) \ 201 ((prot == QETH_PROT_IPV6) ? \ 202 qeth_is_supported6(c, f) : qeth_is_supported(c, f)) 203 #define qeth_is_ipafunc_enabled(c, prot, f) \ 204 ((prot == QETH_PROT_IPV6) ? \ 205 qeth_is_enabled6(c, f) : qeth_is_enabled(c, f)) 206 207 #define QETH_IDX_FUNC_LEVEL_OSD 0x0101 208 #define QETH_IDX_FUNC_LEVEL_IQD 0x4108 209 210 #define QETH_BUFSIZE 4096 211 #define CCW_CMD_WRITE 0x01 212 #define CCW_CMD_READ 0x02 213 214 /** 215 * some more defs 216 */ 217 #define QETH_TX_TIMEOUT 100 * HZ 218 #define QETH_RCD_TIMEOUT 60 * HZ 219 #define QETH_RECLAIM_WORK_TIME HZ 220 #define QETH_MAX_PORTNO 15 221 222 /*IPv6 address autoconfiguration stuff*/ 223 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe 224 #define UNIQUE_ID_NOT_BY_CARD 0x10000 225 226 /*****************************************************************************/ 227 /* QDIO queue and buffer handling */ 228 /*****************************************************************************/ 229 #define QETH_MAX_QUEUES 4 230 #define QETH_IQD_MIN_TXQ 2 /* One for ucast, one for mcast. */ 231 #define QETH_IQD_MCAST_TXQ 0 232 #define QETH_IQD_MIN_UCAST_TXQ 1 233 #define QETH_IN_BUF_SIZE_DEFAULT 65536 234 #define QETH_IN_BUF_COUNT_DEFAULT 64 235 #define QETH_IN_BUF_COUNT_HSDEFAULT 128 236 #define QETH_IN_BUF_COUNT_MIN 8 237 #define QETH_IN_BUF_COUNT_MAX 128 238 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12) 239 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \ 240 ((card)->qdio.in_buf_pool.buf_count / 2) 241 242 /* buffers we have to be behind before we get a PCI */ 243 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1) 244 /*enqueued free buffers left before we get a PCI*/ 245 #define QETH_PCI_THRESHOLD_B(card) 0 246 /*not used unless the microcode gets patched*/ 247 #define QETH_PCI_TIMER_VALUE(card) 3 248 249 /* priority queing */ 250 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING 251 #define QETH_DEFAULT_QUEUE 2 252 #define QETH_NO_PRIO_QUEUEING 0 253 #define QETH_PRIO_Q_ING_PREC 1 254 #define QETH_PRIO_Q_ING_TOS 2 255 #define QETH_PRIO_Q_ING_SKB 3 256 #define QETH_PRIO_Q_ING_VLAN 4 257 258 /* Packing */ 259 #define QETH_LOW_WATERMARK_PACK 2 260 #define QETH_HIGH_WATERMARK_PACK 5 261 #define QETH_WATERMARK_PACK_FUZZ 1 262 263 /* large receive scatter gather copy break */ 264 #define QETH_RX_SG_CB (PAGE_SIZE >> 1) 265 #define QETH_RX_PULL_LEN 256 266 267 struct qeth_hdr_layer3 { 268 __u8 id; 269 __u8 flags; 270 __u16 inbound_checksum; /*TSO:__u16 seqno */ 271 __u32 token; /*TSO: __u32 reserved */ 272 __u16 length; 273 __u8 vlan_prio; 274 __u8 ext_flags; 275 __u16 vlan_id; 276 __u16 frame_offset; 277 union { 278 /* TX: */ 279 struct in6_addr ipv6_addr; 280 struct ipv4 { 281 u8 res[12]; 282 u32 addr; 283 } ipv4; 284 /* RX: */ 285 struct rx { 286 u8 res1[2]; 287 u8 src_mac[6]; 288 u8 res2[4]; 289 u16 vlan_id; 290 u8 res3[2]; 291 } rx; 292 } next_hop; 293 }; 294 295 struct qeth_hdr_layer2 { 296 __u8 id; 297 __u8 flags[3]; 298 __u8 port_no; 299 __u8 hdr_length; 300 __u16 pkt_length; 301 __u16 seq_no; 302 __u16 vlan_id; 303 __u32 reserved; 304 __u8 reserved2[16]; 305 } __attribute__ ((packed)); 306 307 struct qeth_hdr_osn { 308 __u8 id; 309 __u8 reserved; 310 __u16 seq_no; 311 __u16 reserved2; 312 __u16 control_flags; 313 __u16 pdu_length; 314 __u8 reserved3[18]; 315 __u32 ccid; 316 } __attribute__ ((packed)); 317 318 struct qeth_hdr { 319 union { 320 struct qeth_hdr_layer2 l2; 321 struct qeth_hdr_layer3 l3; 322 struct qeth_hdr_osn osn; 323 } hdr; 324 } __attribute__ ((packed)); 325 326 /*TCP Segmentation Offload header*/ 327 struct qeth_hdr_ext_tso { 328 __u16 hdr_tot_len; 329 __u8 imb_hdr_no; 330 __u8 reserved; 331 __u8 hdr_type; 332 __u8 hdr_version; 333 __u16 hdr_len; 334 __u32 payload_len; 335 __u16 mss; 336 __u16 dg_hdr_len; 337 __u8 padding[16]; 338 } __attribute__ ((packed)); 339 340 struct qeth_hdr_tso { 341 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/ 342 struct qeth_hdr_ext_tso ext; 343 } __attribute__ ((packed)); 344 345 346 /* flags for qeth_hdr.flags */ 347 #define QETH_HDR_PASSTHRU 0x10 348 #define QETH_HDR_IPV6 0x80 349 #define QETH_HDR_CAST_MASK 0x07 350 enum qeth_cast_flags { 351 QETH_CAST_UNICAST = 0x06, 352 QETH_CAST_MULTICAST = 0x04, 353 QETH_CAST_BROADCAST = 0x05, 354 QETH_CAST_ANYCAST = 0x07, 355 QETH_CAST_NOCAST = 0x00, 356 }; 357 358 enum qeth_layer2_frame_flags { 359 QETH_LAYER2_FLAG_MULTICAST = 0x01, 360 QETH_LAYER2_FLAG_BROADCAST = 0x02, 361 QETH_LAYER2_FLAG_UNICAST = 0x04, 362 QETH_LAYER2_FLAG_VLAN = 0x10, 363 }; 364 365 enum qeth_header_ids { 366 QETH_HEADER_TYPE_LAYER3 = 0x01, 367 QETH_HEADER_TYPE_LAYER2 = 0x02, 368 QETH_HEADER_TYPE_L3_TSO = 0x03, 369 QETH_HEADER_TYPE_OSN = 0x04, 370 QETH_HEADER_TYPE_L2_TSO = 0x06, 371 QETH_HEADER_MASK_INVAL = 0x80, 372 }; 373 /* flags for qeth_hdr.ext_flags */ 374 #define QETH_HDR_EXT_VLAN_FRAME 0x01 375 #define QETH_HDR_EXT_TOKEN_ID 0x02 376 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04 377 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08 378 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10 379 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20 380 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/ 381 382 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1, 383 struct qeth_hdr_layer2 *h2) 384 { 385 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) && 386 h1->vlan_id == h2->vlan_id; 387 } 388 389 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1, 390 struct qeth_hdr_layer3 *h2) 391 { 392 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) && 393 h1->vlan_id == h2->vlan_id; 394 } 395 396 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1, 397 struct qeth_hdr_layer3 *h2) 398 { 399 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) && 400 ipv6_addr_equal(&h1->next_hop.ipv6_addr, 401 &h2->next_hop.ipv6_addr); 402 } 403 404 enum qeth_qdio_info_states { 405 QETH_QDIO_UNINITIALIZED, 406 QETH_QDIO_ALLOCATED, 407 QETH_QDIO_ESTABLISHED, 408 QETH_QDIO_CLEANING 409 }; 410 411 struct qeth_buffer_pool_entry { 412 struct list_head list; 413 struct list_head init_list; 414 void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER]; 415 }; 416 417 struct qeth_qdio_buffer_pool { 418 struct list_head entry_list; 419 int buf_count; 420 }; 421 422 struct qeth_qdio_buffer { 423 struct qdio_buffer *buffer; 424 /* the buffer pool entry currently associated to this buffer */ 425 struct qeth_buffer_pool_entry *pool_entry; 426 struct sk_buff *rx_skb; 427 }; 428 429 struct qeth_qdio_q { 430 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 431 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q]; 432 int next_buf_to_init; 433 }; 434 435 enum qeth_qdio_out_buffer_state { 436 /* Owned by driver, in order to be filled. */ 437 QETH_QDIO_BUF_EMPTY, 438 /* Filled by driver; owned by hardware in order to be sent. */ 439 QETH_QDIO_BUF_PRIMED, 440 /* Identified to be pending in TPQ. */ 441 QETH_QDIO_BUF_PENDING, 442 /* Found in completion queue. */ 443 QETH_QDIO_BUF_IN_CQ, 444 /* Handled via transfer pending / completion queue. */ 445 QETH_QDIO_BUF_HANDLED_DELAYED, 446 }; 447 448 struct qeth_qdio_out_buffer { 449 struct qdio_buffer *buffer; 450 atomic_t state; 451 int next_element_to_fill; 452 unsigned int bytes; 453 struct sk_buff_head skb_list; 454 int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER]; 455 456 struct qeth_qdio_out_q *q; 457 struct qeth_qdio_out_buffer *next_pending; 458 }; 459 460 struct qeth_card; 461 462 enum qeth_out_q_states { 463 QETH_OUT_Q_UNLOCKED, 464 QETH_OUT_Q_LOCKED, 465 QETH_OUT_Q_LOCKED_FLUSH, 466 }; 467 468 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val)) 469 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1) 470 471 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val)) 472 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1) 473 474 struct qeth_card_stats { 475 u64 rx_bufs; 476 u64 rx_skb_csum; 477 u64 rx_sg_skbs; 478 u64 rx_sg_frags; 479 u64 rx_sg_alloc_page; 480 481 u64 rx_dropped_nomem; 482 u64 rx_dropped_notsupp; 483 u64 rx_dropped_runt; 484 485 /* rtnl_link_stats64 */ 486 u64 rx_packets; 487 u64 rx_bytes; 488 u64 rx_multicast; 489 u64 rx_length_errors; 490 u64 rx_frame_errors; 491 u64 rx_fifo_errors; 492 }; 493 494 struct qeth_out_q_stats { 495 u64 bufs; 496 u64 bufs_pack; 497 u64 buf_elements; 498 u64 skbs_pack; 499 u64 skbs_sg; 500 u64 skbs_csum; 501 u64 skbs_tso; 502 u64 skbs_linearized; 503 u64 skbs_linearized_fail; 504 u64 tso_bytes; 505 u64 packing_mode_switch; 506 u64 stopped; 507 u64 completion_yield; 508 u64 completion_timer; 509 510 /* rtnl_link_stats64 */ 511 u64 tx_packets; 512 u64 tx_bytes; 513 u64 tx_errors; 514 u64 tx_dropped; 515 }; 516 517 #define QETH_TX_TIMER_USECS 500 518 519 struct qeth_qdio_out_q { 520 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 521 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q]; 522 struct qdio_outbuf_state *bufstates; /* convenience pointer */ 523 struct qeth_out_q_stats stats; 524 u8 next_buf_to_fill; 525 u8 max_elements; 526 u8 queue_no; 527 u8 do_pack; 528 struct qeth_card *card; 529 atomic_t state; 530 /* 531 * number of buffers that are currently filled (PRIMED) 532 * -> these buffers are hardware-owned 533 */ 534 atomic_t used_buffers; 535 /* indicates whether PCI flag must be set (or if one is outstanding) */ 536 atomic_t set_pci_flags_count; 537 struct napi_struct napi; 538 struct timer_list timer; 539 struct qeth_hdr *prev_hdr; 540 u8 bulk_start; 541 u8 bulk_count; 542 u8 bulk_max; 543 }; 544 545 #define qeth_for_each_output_queue(card, q, i) \ 546 for (i = 0; i < card->qdio.no_out_queues && \ 547 (q = card->qdio.out_qs[i]); i++) 548 549 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi) 550 551 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue) 552 { 553 if (timer_pending(&queue->timer)) 554 return; 555 mod_timer(&queue->timer, usecs_to_jiffies(QETH_TX_TIMER_USECS) + 556 jiffies); 557 } 558 559 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue) 560 { 561 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q; 562 } 563 564 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue) 565 { 566 return atomic_read(&queue->used_buffers) == 0; 567 } 568 569 struct qeth_qdio_info { 570 atomic_t state; 571 /* input */ 572 int no_in_queues; 573 struct qeth_qdio_q *in_q; 574 struct qeth_qdio_q *c_q; 575 struct qeth_qdio_buffer_pool in_buf_pool; 576 struct qeth_qdio_buffer_pool init_pool; 577 int in_buf_size; 578 579 /* output */ 580 int no_out_queues; 581 struct qeth_qdio_out_q *out_qs[QETH_MAX_QUEUES]; 582 struct qdio_outbuf_state *out_bufstates; 583 584 /* priority queueing */ 585 int do_prio_queueing; 586 int default_out_queue; 587 }; 588 589 /** 590 * channel state machine 591 */ 592 enum qeth_channel_states { 593 CH_STATE_UP, 594 CH_STATE_DOWN, 595 CH_STATE_HALTED, 596 CH_STATE_STOPPED, 597 }; 598 /** 599 * card state machine 600 */ 601 enum qeth_card_states { 602 CARD_STATE_DOWN, 603 CARD_STATE_HARDSETUP, 604 CARD_STATE_SOFTSETUP, 605 }; 606 607 /** 608 * Protocol versions 609 */ 610 enum qeth_prot_versions { 611 QETH_PROT_NONE = 0x0000, 612 QETH_PROT_IPV4 = 0x0004, 613 QETH_PROT_IPV6 = 0x0006, 614 }; 615 616 enum qeth_cq { 617 QETH_CQ_DISABLED = 0, 618 QETH_CQ_ENABLED = 1, 619 QETH_CQ_NOTAVAILABLE = 2, 620 }; 621 622 struct qeth_ipato { 623 bool enabled; 624 bool invert4; 625 bool invert6; 626 struct list_head entries; 627 }; 628 629 struct qeth_channel { 630 struct ccw_device *ccwdev; 631 struct qeth_cmd_buffer *active_cmd; 632 enum qeth_channel_states state; 633 atomic_t irq_pending; 634 }; 635 636 struct qeth_reply { 637 int (*callback)(struct qeth_card *card, struct qeth_reply *reply, 638 unsigned long data); 639 void *param; 640 }; 641 642 struct qeth_cmd_buffer { 643 struct list_head list; 644 struct completion done; 645 spinlock_t lock; 646 unsigned int length; 647 refcount_t ref_count; 648 struct qeth_channel *channel; 649 struct qeth_reply reply; 650 long timeout; 651 unsigned char *data; 652 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob); 653 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob, 654 unsigned int data_length); 655 int rc; 656 }; 657 658 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob) 659 { 660 refcount_inc(&iob->ref_count); 661 } 662 663 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob) 664 { 665 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 666 } 667 668 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob) 669 { 670 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8)); 671 } 672 673 static inline bool qeth_trylock_channel(struct qeth_channel *channel) 674 { 675 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0; 676 } 677 678 /** 679 * OSA card related definitions 680 */ 681 struct qeth_token { 682 __u32 issuer_rm_w; 683 __u32 issuer_rm_r; 684 __u32 cm_filter_w; 685 __u32 cm_filter_r; 686 __u32 cm_connection_w; 687 __u32 cm_connection_r; 688 __u32 ulp_filter_w; 689 __u32 ulp_filter_r; 690 __u32 ulp_connection_w; 691 __u32 ulp_connection_r; 692 }; 693 694 struct qeth_seqno { 695 __u32 trans_hdr; 696 __u32 pdu_hdr; 697 __u32 pdu_hdr_ack; 698 __u16 ipa; 699 }; 700 701 struct qeth_card_blkt { 702 int time_total; 703 int inter_packet; 704 int inter_packet_jumbo; 705 }; 706 707 #define QETH_BROADCAST_WITH_ECHO 0x01 708 #define QETH_BROADCAST_WITHOUT_ECHO 0x02 709 #define QETH_LAYER2_MAC_REGISTERED 0x02 710 struct qeth_card_info { 711 unsigned short unit_addr2; 712 unsigned short cula; 713 u8 chpid; 714 __u16 func_level; 715 char mcl_level[QETH_MCL_LENGTH + 1]; 716 u8 open_when_online:1; 717 u8 promisc_mode:1; 718 u8 use_v1_blkt:1; 719 u8 is_vm_nic:1; 720 int mac_bits; 721 enum qeth_card_types type; 722 enum qeth_link_types link_type; 723 int broadcast_capable; 724 int unique_id; 725 bool layer_enforced; 726 struct qeth_card_blkt blkt; 727 __u32 diagass_support; 728 __u32 hwtrap; 729 }; 730 731 enum qeth_discipline_id { 732 QETH_DISCIPLINE_UNDETERMINED = -1, 733 QETH_DISCIPLINE_LAYER3 = 0, 734 QETH_DISCIPLINE_LAYER2 = 1, 735 }; 736 737 struct qeth_card_options { 738 struct qeth_routing_info route4; 739 struct qeth_ipa_info ipa4; 740 struct qeth_ipa_info adp; /*Adapter parameters*/ 741 struct qeth_routing_info route6; 742 struct qeth_ipa_info ipa6; 743 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */ 744 struct qeth_vnicc_info vnicc; /* VNICC options */ 745 int fake_broadcast; 746 enum qeth_discipline_id layer; 747 int rx_sg_cb; 748 enum qeth_ipa_isolation_modes isolation; 749 enum qeth_ipa_isolation_modes prev_isolation; 750 int sniffer; 751 enum qeth_cq cq; 752 char hsuid[9]; 753 }; 754 755 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2) 756 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3) 757 758 /* 759 * thread bits for qeth_card thread masks 760 */ 761 enum qeth_threads { 762 QETH_RECOVER_THREAD = 1, 763 }; 764 765 struct qeth_osn_info { 766 int (*assist_cb)(struct net_device *dev, void *data); 767 int (*data_cb)(struct sk_buff *skb); 768 }; 769 770 struct qeth_discipline { 771 const struct device_type *devtype; 772 int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done); 773 int (*recover)(void *ptr); 774 int (*setup) (struct ccwgroup_device *); 775 void (*remove) (struct ccwgroup_device *); 776 int (*set_online) (struct ccwgroup_device *); 777 int (*set_offline) (struct ccwgroup_device *); 778 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd); 779 int (*control_event_handler)(struct qeth_card *card, 780 struct qeth_ipa_cmd *cmd); 781 }; 782 783 enum qeth_addr_disposition { 784 QETH_DISP_ADDR_DELETE = 0, 785 QETH_DISP_ADDR_DO_NOTHING = 1, 786 QETH_DISP_ADDR_ADD = 2, 787 }; 788 789 struct qeth_rx { 790 int b_count; 791 int b_index; 792 struct qdio_buffer_element *b_element; 793 int e_offset; 794 int qdio_err; 795 }; 796 797 struct carrier_info { 798 __u8 card_type; 799 __u16 port_mode; 800 __u32 port_speed; 801 }; 802 803 struct qeth_switch_info { 804 __u32 capabilities; 805 __u32 settings; 806 }; 807 808 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT 809 810 struct qeth_card { 811 enum qeth_card_states state; 812 spinlock_t lock; 813 struct ccwgroup_device *gdev; 814 struct qeth_cmd_buffer *read_cmd; 815 struct qeth_channel read; 816 struct qeth_channel write; 817 struct qeth_channel data; 818 819 struct net_device *dev; 820 struct qeth_card_stats stats; 821 struct qeth_card_info info; 822 struct qeth_token token; 823 struct qeth_seqno seqno; 824 struct qeth_card_options options; 825 826 struct workqueue_struct *event_wq; 827 struct workqueue_struct *cmd_wq; 828 wait_queue_head_t wait_q; 829 DECLARE_HASHTABLE(mac_htable, 4); 830 DECLARE_HASHTABLE(ip_htable, 4); 831 struct mutex ip_lock; 832 DECLARE_HASHTABLE(ip_mc_htable, 4); 833 struct work_struct rx_mode_work; 834 struct work_struct kernel_thread_starter; 835 spinlock_t thread_mask_lock; 836 unsigned long thread_start_mask; 837 unsigned long thread_allowed_mask; 838 unsigned long thread_running_mask; 839 struct qeth_ipato ipato; 840 struct list_head cmd_waiter_list; 841 /* QDIO buffer handling */ 842 struct qeth_qdio_info qdio; 843 int read_or_write_problem; 844 struct qeth_osn_info osn_info; 845 struct qeth_discipline *discipline; 846 atomic_t force_alloc_skb; 847 struct service_level qeth_service_level; 848 struct qdio_ssqd_desc ssqd; 849 debug_info_t *debug; 850 struct mutex sbp_lock; 851 struct mutex conf_mutex; 852 struct mutex discipline_mutex; 853 struct napi_struct napi; 854 struct qeth_rx rx; 855 struct delayed_work buffer_reclaim_work; 856 int reclaim_index; 857 struct work_struct close_dev_work; 858 }; 859 860 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card) 861 { 862 return card->state == CARD_STATE_SOFTSETUP; 863 } 864 865 struct qeth_trap_id { 866 __u16 lparnr; 867 char vmname[8]; 868 __u8 chpid; 869 __u8 ssid; 870 __u16 devno; 871 } __packed; 872 873 /*some helper functions*/ 874 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "") 875 876 static inline bool qeth_netdev_is_registered(struct net_device *dev) 877 { 878 return dev->netdev_ops != NULL; 879 } 880 881 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq) 882 { 883 if (txq == QETH_IQD_MCAST_TXQ) 884 return dev->num_tx_queues - 1; 885 if (txq == dev->num_tx_queues - 1) 886 return QETH_IQD_MCAST_TXQ; 887 return txq; 888 } 889 890 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card, 891 struct qeth_qdio_out_q *queue) 892 { 893 return qeth_iqd_translate_txq(card->dev, queue->queue_no) == 894 QETH_IQD_MCAST_TXQ; 895 } 896 897 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf, 898 unsigned int elements) 899 { 900 unsigned int i; 901 902 for (i = 0; i < elements; i++) 903 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element)); 904 buf->element[14].sflags = 0; 905 buf->element[15].sflags = 0; 906 } 907 908 /** 909 * qeth_get_elements_for_range() - find number of SBALEs to cover range. 910 * @start: Start of the address range. 911 * @end: Address after the end of the range. 912 * 913 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 914 * the specified address range. 915 */ 916 static inline int qeth_get_elements_for_range(addr_t start, addr_t end) 917 { 918 return PFN_UP(end) - PFN_DOWN(start); 919 } 920 921 static inline int qeth_get_ip_version(struct sk_buff *skb) 922 { 923 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 924 __be16 prot = veth->h_vlan_proto; 925 926 if (prot == htons(ETH_P_8021Q)) 927 prot = veth->h_vlan_encapsulated_proto; 928 929 switch (prot) { 930 case htons(ETH_P_IPV6): 931 return 6; 932 case htons(ETH_P_IP): 933 return 4; 934 default: 935 return 0; 936 } 937 } 938 939 static inline int qeth_get_ether_cast_type(struct sk_buff *skb) 940 { 941 u8 *addr = eth_hdr(skb)->h_dest; 942 943 if (is_multicast_ether_addr(addr)) 944 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST : 945 RTN_MULTICAST; 946 return RTN_UNICAST; 947 } 948 949 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv) 950 { 951 struct dst_entry *dst = skb_dst(skb); 952 struct rt6_info *rt; 953 954 rt = (struct rt6_info *) dst; 955 if (dst) 956 dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0); 957 return dst; 958 } 959 960 static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb, 961 u8 flags) 962 { 963 if ((card->dev->features & NETIF_F_RXCSUM) && 964 (flags & QETH_HDR_EXT_CSUM_TRANSP_REQ)) { 965 skb->ip_summed = CHECKSUM_UNNECESSARY; 966 QETH_CARD_STAT_INC(card, rx_skb_csum); 967 } else { 968 skb->ip_summed = CHECKSUM_NONE; 969 } 970 } 971 972 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv) 973 { 974 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ; 975 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) || 976 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)) 977 *flags |= QETH_HDR_EXT_UDP; 978 } 979 980 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card, 981 struct qeth_buffer_pool_entry *entry) 982 { 983 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list); 984 } 985 986 static inline int qeth_is_diagass_supported(struct qeth_card *card, 987 enum qeth_diags_cmds cmd) 988 { 989 return card->info.diagass_support & (__u32)cmd; 990 } 991 992 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 993 enum qeth_ipa_funcs ipa_func, 994 u16 cmd_code, u32 *data, 995 enum qeth_prot_versions prot); 996 /* IPv4 variant */ 997 static inline int qeth_send_simple_setassparms(struct qeth_card *card, 998 enum qeth_ipa_funcs ipa_func, 999 u16 cmd_code, u32 *data) 1000 { 1001 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 1002 data, QETH_PROT_IPV4); 1003 } 1004 1005 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card, 1006 enum qeth_ipa_funcs ipa_func, 1007 u16 cmd_code, u32 *data) 1008 { 1009 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 1010 data, QETH_PROT_IPV6); 1011 } 1012 1013 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb); 1014 1015 extern struct qeth_discipline qeth_l2_discipline; 1016 extern struct qeth_discipline qeth_l3_discipline; 1017 extern const struct ethtool_ops qeth_ethtool_ops; 1018 extern const struct ethtool_ops qeth_osn_ethtool_ops; 1019 extern const struct attribute_group *qeth_generic_attr_groups[]; 1020 extern const struct attribute_group *qeth_osn_attr_groups[]; 1021 extern const struct attribute_group qeth_device_attr_group; 1022 extern const struct attribute_group qeth_device_blkt_group; 1023 extern const struct device_type qeth_generic_devtype; 1024 1025 const char *qeth_get_cardname_short(struct qeth_card *); 1026 int qeth_realloc_buffer_pool(struct qeth_card *, int); 1027 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id); 1028 void qeth_core_free_discipline(struct qeth_card *); 1029 1030 /* exports for qeth discipline device drivers */ 1031 extern struct kmem_cache *qeth_core_header_cache; 1032 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS]; 1033 1034 struct net_device *qeth_clone_netdev(struct net_device *orig); 1035 struct qeth_card *qeth_get_card_by_busid(char *bus_id); 1036 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int); 1037 int qeth_threads_running(struct qeth_card *, unsigned long); 1038 int qeth_do_run_thread(struct qeth_card *, unsigned long); 1039 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long); 1040 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long); 1041 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok); 1042 int qeth_stop_channel(struct qeth_channel *channel); 1043 1044 void qeth_print_status_message(struct qeth_card *); 1045 int qeth_init_qdio_queues(struct qeth_card *); 1046 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, 1047 int (*reply_cb) 1048 (struct qeth_card *, struct qeth_reply *, unsigned long), 1049 void *); 1050 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 1051 enum qeth_ipa_cmds cmd_code, 1052 enum qeth_prot_versions prot, 1053 unsigned int data_length); 1054 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, 1055 unsigned int length, unsigned int ccws, 1056 long timeout); 1057 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 1058 enum qeth_ipa_funcs ipa_func, 1059 u16 cmd_code, 1060 unsigned int data_length, 1061 enum qeth_prot_versions prot); 1062 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 1063 enum qeth_diags_cmds sub_cmd, 1064 unsigned int data_length); 1065 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason); 1066 void qeth_put_cmd(struct qeth_cmd_buffer *iob); 1067 1068 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *, 1069 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *, 1070 struct qeth_hdr **); 1071 void qeth_schedule_recovery(struct qeth_card *); 1072 int qeth_poll(struct napi_struct *napi, int budget); 1073 void qeth_clear_ipacmd_list(struct qeth_card *); 1074 int qeth_qdio_clear_card(struct qeth_card *, int); 1075 void qeth_clear_working_pool_list(struct qeth_card *); 1076 void qeth_drain_output_queues(struct qeth_card *card); 1077 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable); 1078 int qeth_setadpparms_change_macaddr(struct qeth_card *); 1079 void qeth_tx_timeout(struct net_device *); 1080 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 1081 u16 cmd_length); 1082 int qeth_query_switch_attributes(struct qeth_card *card, 1083 struct qeth_switch_info *sw_info); 1084 int qeth_query_card_info(struct qeth_card *card, 1085 struct carrier_info *carrier_info); 1086 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset); 1087 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 1088 struct sk_buff *skb, struct qeth_hdr *hdr, 1089 unsigned int offset, unsigned int hd_len, 1090 int elements_needed); 1091 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 1092 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...); 1093 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback); 1094 int qeth_configure_cq(struct qeth_card *, enum qeth_cq); 1095 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action); 1096 void qeth_trace_features(struct qeth_card *); 1097 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long); 1098 int qeth_set_features(struct net_device *, netdev_features_t); 1099 void qeth_enable_hw_features(struct net_device *dev); 1100 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t); 1101 netdev_features_t qeth_features_check(struct sk_buff *skb, 1102 struct net_device *dev, 1103 netdev_features_t features); 1104 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats); 1105 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1106 u8 cast_type, struct net_device *sb_dev); 1107 int qeth_open(struct net_device *dev); 1108 int qeth_stop(struct net_device *dev); 1109 1110 int qeth_vm_request_mac(struct qeth_card *card); 1111 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 1112 struct qeth_qdio_out_q *queue, int ipv, 1113 void (*fill_header)(struct qeth_qdio_out_q *queue, 1114 struct qeth_hdr *hdr, struct sk_buff *skb, 1115 int ipv, unsigned int data_len)); 1116 1117 /* exports for OSN */ 1118 int qeth_osn_assist(struct net_device *, void *, int); 1119 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **, 1120 int (*assist_cb)(struct net_device *, void *), 1121 int (*data_cb)(struct sk_buff *)); 1122 void qeth_osn_deregister(struct net_device *); 1123 1124 #endif /* __QETH_CORE_H__ */ 1125