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; 483 484 /* rtnl_link_stats64 */ 485 u64 rx_packets; 486 u64 rx_bytes; 487 u64 rx_multicast; 488 u64 rx_length_errors; 489 u64 rx_frame_errors; 490 u64 rx_fifo_errors; 491 }; 492 493 struct qeth_out_q_stats { 494 u64 bufs; 495 u64 bufs_pack; 496 u64 buf_elements; 497 u64 skbs_pack; 498 u64 skbs_sg; 499 u64 skbs_csum; 500 u64 skbs_tso; 501 u64 skbs_linearized; 502 u64 skbs_linearized_fail; 503 u64 tso_bytes; 504 u64 packing_mode_switch; 505 u64 stopped; 506 u64 completion_yield; 507 u64 completion_timer; 508 509 /* rtnl_link_stats64 */ 510 u64 tx_packets; 511 u64 tx_bytes; 512 u64 tx_errors; 513 u64 tx_dropped; 514 }; 515 516 #define QETH_TX_TIMER_USECS 500 517 518 struct qeth_qdio_out_q { 519 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 520 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q]; 521 struct qdio_outbuf_state *bufstates; /* convenience pointer */ 522 struct qeth_out_q_stats stats; 523 u8 next_buf_to_fill; 524 u8 max_elements; 525 u8 queue_no; 526 u8 do_pack; 527 struct qeth_card *card; 528 atomic_t state; 529 /* 530 * number of buffers that are currently filled (PRIMED) 531 * -> these buffers are hardware-owned 532 */ 533 atomic_t used_buffers; 534 /* indicates whether PCI flag must be set (or if one is outstanding) */ 535 atomic_t set_pci_flags_count; 536 struct napi_struct napi; 537 struct timer_list timer; 538 struct qeth_hdr *prev_hdr; 539 u8 bulk_start; 540 u8 bulk_count; 541 u8 bulk_max; 542 }; 543 544 #define qeth_for_each_output_queue(card, q, i) \ 545 for (i = 0; i < card->qdio.no_out_queues && \ 546 (q = card->qdio.out_qs[i]); i++) 547 548 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi) 549 550 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue) 551 { 552 if (timer_pending(&queue->timer)) 553 return; 554 mod_timer(&queue->timer, usecs_to_jiffies(QETH_TX_TIMER_USECS) + 555 jiffies); 556 } 557 558 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue) 559 { 560 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q; 561 } 562 563 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue) 564 { 565 return atomic_read(&queue->used_buffers) == 0; 566 } 567 568 struct qeth_qdio_info { 569 atomic_t state; 570 /* input */ 571 int no_in_queues; 572 struct qeth_qdio_q *in_q; 573 struct qeth_qdio_q *c_q; 574 struct qeth_qdio_buffer_pool in_buf_pool; 575 struct qeth_qdio_buffer_pool init_pool; 576 int in_buf_size; 577 578 /* output */ 579 int no_out_queues; 580 struct qeth_qdio_out_q *out_qs[QETH_MAX_QUEUES]; 581 struct qdio_outbuf_state *out_bufstates; 582 583 /* priority queueing */ 584 int do_prio_queueing; 585 int default_out_queue; 586 }; 587 588 /** 589 * channel state machine 590 */ 591 enum qeth_channel_states { 592 CH_STATE_UP, 593 CH_STATE_DOWN, 594 CH_STATE_HALTED, 595 CH_STATE_STOPPED, 596 }; 597 /** 598 * card state machine 599 */ 600 enum qeth_card_states { 601 CARD_STATE_DOWN, 602 CARD_STATE_HARDSETUP, 603 CARD_STATE_SOFTSETUP, 604 }; 605 606 /** 607 * Protocol versions 608 */ 609 enum qeth_prot_versions { 610 QETH_PROT_NONE = 0x0000, 611 QETH_PROT_IPV4 = 0x0004, 612 QETH_PROT_IPV6 = 0x0006, 613 }; 614 615 enum qeth_cq { 616 QETH_CQ_DISABLED = 0, 617 QETH_CQ_ENABLED = 1, 618 QETH_CQ_NOTAVAILABLE = 2, 619 }; 620 621 struct qeth_ipato { 622 bool enabled; 623 bool invert4; 624 bool invert6; 625 struct list_head entries; 626 }; 627 628 struct qeth_channel { 629 struct ccw_device *ccwdev; 630 enum qeth_channel_states state; 631 atomic_t irq_pending; 632 }; 633 634 struct qeth_reply { 635 int (*callback)(struct qeth_card *card, struct qeth_reply *reply, 636 unsigned long data); 637 void *param; 638 }; 639 640 struct qeth_cmd_buffer { 641 struct list_head list; 642 struct completion done; 643 spinlock_t lock; 644 unsigned int length; 645 refcount_t ref_count; 646 struct qeth_channel *channel; 647 struct qeth_reply reply; 648 long timeout; 649 unsigned char *data; 650 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob); 651 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob, 652 unsigned int data_length); 653 int rc; 654 }; 655 656 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob) 657 { 658 refcount_inc(&iob->ref_count); 659 } 660 661 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob) 662 { 663 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 664 } 665 666 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob) 667 { 668 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8)); 669 } 670 671 static inline bool qeth_trylock_channel(struct qeth_channel *channel) 672 { 673 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0; 674 } 675 676 /** 677 * OSA card related definitions 678 */ 679 struct qeth_token { 680 __u32 issuer_rm_w; 681 __u32 issuer_rm_r; 682 __u32 cm_filter_w; 683 __u32 cm_filter_r; 684 __u32 cm_connection_w; 685 __u32 cm_connection_r; 686 __u32 ulp_filter_w; 687 __u32 ulp_filter_r; 688 __u32 ulp_connection_w; 689 __u32 ulp_connection_r; 690 }; 691 692 struct qeth_seqno { 693 __u32 trans_hdr; 694 __u32 pdu_hdr; 695 __u32 pdu_hdr_ack; 696 __u16 ipa; 697 }; 698 699 struct qeth_card_blkt { 700 int time_total; 701 int inter_packet; 702 int inter_packet_jumbo; 703 }; 704 705 #define QETH_BROADCAST_WITH_ECHO 0x01 706 #define QETH_BROADCAST_WITHOUT_ECHO 0x02 707 #define QETH_LAYER2_MAC_REGISTERED 0x02 708 struct qeth_card_info { 709 unsigned short unit_addr2; 710 unsigned short cula; 711 u8 chpid; 712 __u16 func_level; 713 char mcl_level[QETH_MCL_LENGTH + 1]; 714 u8 open_when_online:1; 715 u8 promisc_mode:1; 716 u8 use_v1_blkt:1; 717 u8 is_vm_nic:1; 718 int mac_bits; 719 enum qeth_card_types type; 720 enum qeth_link_types link_type; 721 int broadcast_capable; 722 int unique_id; 723 bool layer_enforced; 724 struct qeth_card_blkt blkt; 725 __u32 diagass_support; 726 __u32 hwtrap; 727 }; 728 729 enum qeth_discipline_id { 730 QETH_DISCIPLINE_UNDETERMINED = -1, 731 QETH_DISCIPLINE_LAYER3 = 0, 732 QETH_DISCIPLINE_LAYER2 = 1, 733 }; 734 735 struct qeth_card_options { 736 struct qeth_routing_info route4; 737 struct qeth_ipa_info ipa4; 738 struct qeth_ipa_info adp; /*Adapter parameters*/ 739 struct qeth_routing_info route6; 740 struct qeth_ipa_info ipa6; 741 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */ 742 struct qeth_vnicc_info vnicc; /* VNICC options */ 743 int fake_broadcast; 744 enum qeth_discipline_id layer; 745 int rx_sg_cb; 746 enum qeth_ipa_isolation_modes isolation; 747 enum qeth_ipa_isolation_modes prev_isolation; 748 int sniffer; 749 enum qeth_cq cq; 750 char hsuid[9]; 751 }; 752 753 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2) 754 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3) 755 756 /* 757 * thread bits for qeth_card thread masks 758 */ 759 enum qeth_threads { 760 QETH_RECOVER_THREAD = 1, 761 }; 762 763 struct qeth_osn_info { 764 int (*assist_cb)(struct net_device *dev, void *data); 765 int (*data_cb)(struct sk_buff *skb); 766 }; 767 768 struct qeth_discipline { 769 const struct device_type *devtype; 770 int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done); 771 int (*recover)(void *ptr); 772 int (*setup) (struct ccwgroup_device *); 773 void (*remove) (struct ccwgroup_device *); 774 int (*set_online) (struct ccwgroup_device *); 775 int (*set_offline) (struct ccwgroup_device *); 776 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd); 777 int (*control_event_handler)(struct qeth_card *card, 778 struct qeth_ipa_cmd *cmd); 779 }; 780 781 enum qeth_addr_disposition { 782 QETH_DISP_ADDR_DELETE = 0, 783 QETH_DISP_ADDR_DO_NOTHING = 1, 784 QETH_DISP_ADDR_ADD = 2, 785 }; 786 787 struct qeth_rx { 788 int b_count; 789 int b_index; 790 struct qdio_buffer_element *b_element; 791 int e_offset; 792 int qdio_err; 793 }; 794 795 struct carrier_info { 796 __u8 card_type; 797 __u16 port_mode; 798 __u32 port_speed; 799 }; 800 801 struct qeth_switch_info { 802 __u32 capabilities; 803 __u32 settings; 804 }; 805 806 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT 807 808 struct qeth_card { 809 enum qeth_card_states state; 810 spinlock_t lock; 811 struct ccwgroup_device *gdev; 812 struct qeth_cmd_buffer *read_cmd; 813 struct qeth_channel read; 814 struct qeth_channel write; 815 struct qeth_channel data; 816 817 struct net_device *dev; 818 struct qeth_card_stats stats; 819 struct qeth_card_info info; 820 struct qeth_token token; 821 struct qeth_seqno seqno; 822 struct qeth_card_options options; 823 824 struct workqueue_struct *event_wq; 825 struct workqueue_struct *cmd_wq; 826 wait_queue_head_t wait_q; 827 DECLARE_HASHTABLE(mac_htable, 4); 828 DECLARE_HASHTABLE(ip_htable, 4); 829 struct mutex ip_lock; 830 DECLARE_HASHTABLE(ip_mc_htable, 4); 831 struct work_struct rx_mode_work; 832 struct work_struct kernel_thread_starter; 833 spinlock_t thread_mask_lock; 834 unsigned long thread_start_mask; 835 unsigned long thread_allowed_mask; 836 unsigned long thread_running_mask; 837 struct qeth_ipato ipato; 838 struct list_head cmd_waiter_list; 839 /* QDIO buffer handling */ 840 struct qeth_qdio_info qdio; 841 int read_or_write_problem; 842 struct qeth_osn_info osn_info; 843 struct qeth_discipline *discipline; 844 atomic_t force_alloc_skb; 845 struct service_level qeth_service_level; 846 struct qdio_ssqd_desc ssqd; 847 debug_info_t *debug; 848 struct mutex sbp_lock; 849 struct mutex conf_mutex; 850 struct mutex discipline_mutex; 851 struct napi_struct napi; 852 struct qeth_rx rx; 853 struct delayed_work buffer_reclaim_work; 854 int reclaim_index; 855 struct work_struct close_dev_work; 856 }; 857 858 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card) 859 { 860 return card->state == CARD_STATE_SOFTSETUP; 861 } 862 863 struct qeth_trap_id { 864 __u16 lparnr; 865 char vmname[8]; 866 __u8 chpid; 867 __u8 ssid; 868 __u16 devno; 869 } __packed; 870 871 /*some helper functions*/ 872 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "") 873 874 static inline bool qeth_netdev_is_registered(struct net_device *dev) 875 { 876 return dev->netdev_ops != NULL; 877 } 878 879 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq) 880 { 881 if (txq == QETH_IQD_MCAST_TXQ) 882 return dev->num_tx_queues - 1; 883 if (txq == dev->num_tx_queues - 1) 884 return QETH_IQD_MCAST_TXQ; 885 return txq; 886 } 887 888 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card, 889 struct qeth_qdio_out_q *queue) 890 { 891 return qeth_iqd_translate_txq(card->dev, queue->queue_no) == 892 QETH_IQD_MCAST_TXQ; 893 } 894 895 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf, 896 unsigned int elements) 897 { 898 unsigned int i; 899 900 for (i = 0; i < elements; i++) 901 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element)); 902 buf->element[14].sflags = 0; 903 buf->element[15].sflags = 0; 904 } 905 906 /** 907 * qeth_get_elements_for_range() - find number of SBALEs to cover range. 908 * @start: Start of the address range. 909 * @end: Address after the end of the range. 910 * 911 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 912 * the specified address range. 913 */ 914 static inline int qeth_get_elements_for_range(addr_t start, addr_t end) 915 { 916 return PFN_UP(end) - PFN_DOWN(start); 917 } 918 919 static inline int qeth_get_ip_version(struct sk_buff *skb) 920 { 921 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 922 __be16 prot = veth->h_vlan_proto; 923 924 if (prot == htons(ETH_P_8021Q)) 925 prot = veth->h_vlan_encapsulated_proto; 926 927 switch (prot) { 928 case htons(ETH_P_IPV6): 929 return 6; 930 case htons(ETH_P_IP): 931 return 4; 932 default: 933 return 0; 934 } 935 } 936 937 static inline int qeth_get_ether_cast_type(struct sk_buff *skb) 938 { 939 u8 *addr = eth_hdr(skb)->h_dest; 940 941 if (is_multicast_ether_addr(addr)) 942 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST : 943 RTN_MULTICAST; 944 return RTN_UNICAST; 945 } 946 947 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv) 948 { 949 struct dst_entry *dst = skb_dst(skb); 950 struct rt6_info *rt; 951 952 rt = (struct rt6_info *) dst; 953 if (dst) 954 dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0); 955 return dst; 956 } 957 958 static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb, 959 u8 flags) 960 { 961 if ((card->dev->features & NETIF_F_RXCSUM) && 962 (flags & QETH_HDR_EXT_CSUM_TRANSP_REQ)) { 963 skb->ip_summed = CHECKSUM_UNNECESSARY; 964 QETH_CARD_STAT_INC(card, rx_skb_csum); 965 } else { 966 skb->ip_summed = CHECKSUM_NONE; 967 } 968 } 969 970 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv) 971 { 972 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ; 973 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) || 974 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)) 975 *flags |= QETH_HDR_EXT_UDP; 976 } 977 978 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card, 979 struct qeth_buffer_pool_entry *entry) 980 { 981 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list); 982 } 983 984 static inline int qeth_is_diagass_supported(struct qeth_card *card, 985 enum qeth_diags_cmds cmd) 986 { 987 return card->info.diagass_support & (__u32)cmd; 988 } 989 990 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 991 enum qeth_ipa_funcs ipa_func, 992 u16 cmd_code, u32 *data, 993 enum qeth_prot_versions prot); 994 /* IPv4 variant */ 995 static inline int qeth_send_simple_setassparms(struct qeth_card *card, 996 enum qeth_ipa_funcs ipa_func, 997 u16 cmd_code, u32 *data) 998 { 999 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 1000 data, QETH_PROT_IPV4); 1001 } 1002 1003 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card, 1004 enum qeth_ipa_funcs ipa_func, 1005 u16 cmd_code, u32 *data) 1006 { 1007 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 1008 data, QETH_PROT_IPV6); 1009 } 1010 1011 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb); 1012 1013 extern struct qeth_discipline qeth_l2_discipline; 1014 extern struct qeth_discipline qeth_l3_discipline; 1015 extern const struct ethtool_ops qeth_ethtool_ops; 1016 extern const struct ethtool_ops qeth_osn_ethtool_ops; 1017 extern const struct attribute_group *qeth_generic_attr_groups[]; 1018 extern const struct attribute_group *qeth_osn_attr_groups[]; 1019 extern const struct attribute_group qeth_device_attr_group; 1020 extern const struct attribute_group qeth_device_blkt_group; 1021 extern const struct device_type qeth_generic_devtype; 1022 1023 const char *qeth_get_cardname_short(struct qeth_card *); 1024 int qeth_realloc_buffer_pool(struct qeth_card *, int); 1025 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id); 1026 void qeth_core_free_discipline(struct qeth_card *); 1027 1028 /* exports for qeth discipline device drivers */ 1029 extern struct kmem_cache *qeth_core_header_cache; 1030 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS]; 1031 1032 struct net_device *qeth_clone_netdev(struct net_device *orig); 1033 struct qeth_card *qeth_get_card_by_busid(char *bus_id); 1034 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int); 1035 int qeth_threads_running(struct qeth_card *, unsigned long); 1036 int qeth_do_run_thread(struct qeth_card *, unsigned long); 1037 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long); 1038 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long); 1039 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok); 1040 void qeth_print_status_message(struct qeth_card *); 1041 int qeth_init_qdio_queues(struct qeth_card *); 1042 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, 1043 int (*reply_cb) 1044 (struct qeth_card *, struct qeth_reply *, unsigned long), 1045 void *); 1046 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 1047 enum qeth_ipa_cmds cmd_code, 1048 enum qeth_prot_versions prot, 1049 unsigned int data_length); 1050 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, 1051 unsigned int length, unsigned int ccws, 1052 long timeout); 1053 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 1054 enum qeth_ipa_funcs ipa_func, 1055 u16 cmd_code, 1056 unsigned int data_length, 1057 enum qeth_prot_versions prot); 1058 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 1059 enum qeth_diags_cmds sub_cmd, 1060 unsigned int data_length); 1061 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason); 1062 void qeth_put_cmd(struct qeth_cmd_buffer *iob); 1063 1064 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *, 1065 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *, 1066 struct qeth_hdr **); 1067 void qeth_schedule_recovery(struct qeth_card *); 1068 int qeth_poll(struct napi_struct *napi, int budget); 1069 void qeth_clear_ipacmd_list(struct qeth_card *); 1070 int qeth_qdio_clear_card(struct qeth_card *, int); 1071 void qeth_clear_working_pool_list(struct qeth_card *); 1072 void qeth_drain_output_queues(struct qeth_card *card); 1073 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable); 1074 int qeth_setadpparms_change_macaddr(struct qeth_card *); 1075 void qeth_tx_timeout(struct net_device *); 1076 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 1077 u16 cmd_length); 1078 int qeth_query_switch_attributes(struct qeth_card *card, 1079 struct qeth_switch_info *sw_info); 1080 int qeth_query_card_info(struct qeth_card *card, 1081 struct carrier_info *carrier_info); 1082 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset); 1083 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 1084 struct sk_buff *skb, struct qeth_hdr *hdr, 1085 unsigned int offset, unsigned int hd_len, 1086 int elements_needed); 1087 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 1088 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...); 1089 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback); 1090 int qeth_configure_cq(struct qeth_card *, enum qeth_cq); 1091 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action); 1092 void qeth_trace_features(struct qeth_card *); 1093 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long); 1094 int qeth_set_features(struct net_device *, netdev_features_t); 1095 void qeth_enable_hw_features(struct net_device *dev); 1096 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t); 1097 netdev_features_t qeth_features_check(struct sk_buff *skb, 1098 struct net_device *dev, 1099 netdev_features_t features); 1100 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats); 1101 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1102 u8 cast_type, struct net_device *sb_dev); 1103 int qeth_open(struct net_device *dev); 1104 int qeth_stop(struct net_device *dev); 1105 1106 int qeth_vm_request_mac(struct qeth_card *card); 1107 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 1108 struct qeth_qdio_out_q *queue, int ipv, 1109 void (*fill_header)(struct qeth_qdio_out_q *queue, 1110 struct qeth_hdr *hdr, struct sk_buff *skb, 1111 int ipv, unsigned int data_len)); 1112 1113 /* exports for OSN */ 1114 int qeth_osn_assist(struct net_device *, void *, int); 1115 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **, 1116 int (*assist_cb)(struct net_device *, void *), 1117 int (*data_cb)(struct sk_buff *)); 1118 void qeth_osn_deregister(struct net_device *); 1119 1120 #endif /* __QETH_CORE_H__ */ 1121