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 }; 372 /* flags for qeth_hdr.ext_flags */ 373 #define QETH_HDR_EXT_VLAN_FRAME 0x01 374 #define QETH_HDR_EXT_TOKEN_ID 0x02 375 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04 376 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08 377 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10 378 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20 379 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/ 380 381 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1, 382 struct qeth_hdr_layer2 *h2) 383 { 384 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) && 385 h1->vlan_id == h2->vlan_id; 386 } 387 388 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1, 389 struct qeth_hdr_layer3 *h2) 390 { 391 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) && 392 h1->vlan_id == h2->vlan_id; 393 } 394 395 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1, 396 struct qeth_hdr_layer3 *h2) 397 { 398 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) && 399 ipv6_addr_equal(&h1->next_hop.ipv6_addr, 400 &h2->next_hop.ipv6_addr); 401 } 402 403 enum qeth_qdio_info_states { 404 QETH_QDIO_UNINITIALIZED, 405 QETH_QDIO_ALLOCATED, 406 QETH_QDIO_ESTABLISHED, 407 QETH_QDIO_CLEANING 408 }; 409 410 struct qeth_buffer_pool_entry { 411 struct list_head list; 412 struct list_head init_list; 413 void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER]; 414 }; 415 416 struct qeth_qdio_buffer_pool { 417 struct list_head entry_list; 418 int buf_count; 419 }; 420 421 struct qeth_qdio_buffer { 422 struct qdio_buffer *buffer; 423 /* the buffer pool entry currently associated to this buffer */ 424 struct qeth_buffer_pool_entry *pool_entry; 425 struct sk_buff *rx_skb; 426 }; 427 428 struct qeth_qdio_q { 429 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 430 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q]; 431 int next_buf_to_init; 432 }; 433 434 enum qeth_qdio_out_buffer_state { 435 /* Owned by driver, in order to be filled. */ 436 QETH_QDIO_BUF_EMPTY, 437 /* Filled by driver; owned by hardware in order to be sent. */ 438 QETH_QDIO_BUF_PRIMED, 439 /* Identified to be pending in TPQ. */ 440 QETH_QDIO_BUF_PENDING, 441 /* Found in completion queue. */ 442 QETH_QDIO_BUF_IN_CQ, 443 /* Handled via transfer pending / completion queue. */ 444 QETH_QDIO_BUF_HANDLED_DELAYED, 445 }; 446 447 struct qeth_qdio_out_buffer { 448 struct qdio_buffer *buffer; 449 atomic_t state; 450 int next_element_to_fill; 451 unsigned int bytes; 452 struct sk_buff_head skb_list; 453 int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER]; 454 455 struct qeth_qdio_out_q *q; 456 struct qeth_qdio_out_buffer *next_pending; 457 }; 458 459 struct qeth_card; 460 461 enum qeth_out_q_states { 462 QETH_OUT_Q_UNLOCKED, 463 QETH_OUT_Q_LOCKED, 464 QETH_OUT_Q_LOCKED_FLUSH, 465 }; 466 467 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val)) 468 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1) 469 470 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val)) 471 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1) 472 473 struct qeth_card_stats { 474 u64 rx_bufs; 475 u64 rx_skb_csum; 476 u64 rx_sg_skbs; 477 u64 rx_sg_frags; 478 u64 rx_sg_alloc_page; 479 480 /* rtnl_link_stats64 */ 481 u64 rx_packets; 482 u64 rx_bytes; 483 u64 rx_errors; 484 u64 rx_dropped; 485 u64 rx_multicast; 486 }; 487 488 struct qeth_out_q_stats { 489 u64 bufs; 490 u64 bufs_pack; 491 u64 buf_elements; 492 u64 skbs_pack; 493 u64 skbs_sg; 494 u64 skbs_csum; 495 u64 skbs_tso; 496 u64 skbs_linearized; 497 u64 skbs_linearized_fail; 498 u64 tso_bytes; 499 u64 packing_mode_switch; 500 u64 stopped; 501 u64 completion_yield; 502 u64 completion_timer; 503 504 /* rtnl_link_stats64 */ 505 u64 tx_packets; 506 u64 tx_bytes; 507 u64 tx_errors; 508 u64 tx_dropped; 509 }; 510 511 #define QETH_TX_TIMER_USECS 500 512 513 struct qeth_qdio_out_q { 514 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 515 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q]; 516 struct qdio_outbuf_state *bufstates; /* convenience pointer */ 517 struct qeth_out_q_stats stats; 518 u8 next_buf_to_fill; 519 u8 max_elements; 520 u8 queue_no; 521 u8 do_pack; 522 struct qeth_card *card; 523 atomic_t state; 524 /* 525 * number of buffers that are currently filled (PRIMED) 526 * -> these buffers are hardware-owned 527 */ 528 atomic_t used_buffers; 529 /* indicates whether PCI flag must be set (or if one is outstanding) */ 530 atomic_t set_pci_flags_count; 531 struct napi_struct napi; 532 struct timer_list timer; 533 struct qeth_hdr *prev_hdr; 534 u8 bulk_start; 535 }; 536 537 #define qeth_for_each_output_queue(card, q, i) \ 538 for (i = 0; i < card->qdio.no_out_queues && \ 539 (q = card->qdio.out_qs[i]); i++) 540 541 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi) 542 543 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue) 544 { 545 if (timer_pending(&queue->timer)) 546 return; 547 mod_timer(&queue->timer, usecs_to_jiffies(QETH_TX_TIMER_USECS) + 548 jiffies); 549 } 550 551 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue) 552 { 553 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q; 554 } 555 556 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue) 557 { 558 return atomic_read(&queue->used_buffers) == 0; 559 } 560 561 struct qeth_qdio_info { 562 atomic_t state; 563 /* input */ 564 int no_in_queues; 565 struct qeth_qdio_q *in_q; 566 struct qeth_qdio_q *c_q; 567 struct qeth_qdio_buffer_pool in_buf_pool; 568 struct qeth_qdio_buffer_pool init_pool; 569 int in_buf_size; 570 571 /* output */ 572 int no_out_queues; 573 struct qeth_qdio_out_q *out_qs[QETH_MAX_QUEUES]; 574 struct qdio_outbuf_state *out_bufstates; 575 576 /* priority queueing */ 577 int do_prio_queueing; 578 int default_out_queue; 579 }; 580 581 /** 582 * channel state machine 583 */ 584 enum qeth_channel_states { 585 CH_STATE_UP, 586 CH_STATE_DOWN, 587 CH_STATE_HALTED, 588 CH_STATE_STOPPED, 589 }; 590 /** 591 * card state machine 592 */ 593 enum qeth_card_states { 594 CARD_STATE_DOWN, 595 CARD_STATE_HARDSETUP, 596 CARD_STATE_SOFTSETUP, 597 }; 598 599 /** 600 * Protocol versions 601 */ 602 enum qeth_prot_versions { 603 QETH_PROT_NONE = 0x0000, 604 QETH_PROT_IPV4 = 0x0004, 605 QETH_PROT_IPV6 = 0x0006, 606 }; 607 608 enum qeth_cq { 609 QETH_CQ_DISABLED = 0, 610 QETH_CQ_ENABLED = 1, 611 QETH_CQ_NOTAVAILABLE = 2, 612 }; 613 614 struct qeth_ipato { 615 bool enabled; 616 bool invert4; 617 bool invert6; 618 struct list_head entries; 619 }; 620 621 struct qeth_channel { 622 struct ccw_device *ccwdev; 623 enum qeth_channel_states state; 624 atomic_t irq_pending; 625 }; 626 627 struct qeth_reply { 628 int (*callback)(struct qeth_card *card, struct qeth_reply *reply, 629 unsigned long data); 630 void *param; 631 }; 632 633 struct qeth_cmd_buffer { 634 struct list_head list; 635 struct completion done; 636 spinlock_t lock; 637 unsigned int length; 638 refcount_t ref_count; 639 struct qeth_channel *channel; 640 struct qeth_reply reply; 641 long timeout; 642 unsigned char *data; 643 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob); 644 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob, 645 unsigned int data_length); 646 int rc; 647 }; 648 649 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob) 650 { 651 refcount_inc(&iob->ref_count); 652 } 653 654 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob) 655 { 656 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 657 } 658 659 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob) 660 { 661 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8)); 662 } 663 664 static inline bool qeth_trylock_channel(struct qeth_channel *channel) 665 { 666 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0; 667 } 668 669 /** 670 * OSA card related definitions 671 */ 672 struct qeth_token { 673 __u32 issuer_rm_w; 674 __u32 issuer_rm_r; 675 __u32 cm_filter_w; 676 __u32 cm_filter_r; 677 __u32 cm_connection_w; 678 __u32 cm_connection_r; 679 __u32 ulp_filter_w; 680 __u32 ulp_filter_r; 681 __u32 ulp_connection_w; 682 __u32 ulp_connection_r; 683 }; 684 685 struct qeth_seqno { 686 __u32 trans_hdr; 687 __u32 pdu_hdr; 688 __u32 pdu_hdr_ack; 689 __u16 ipa; 690 }; 691 692 struct qeth_card_blkt { 693 int time_total; 694 int inter_packet; 695 int inter_packet_jumbo; 696 }; 697 698 #define QETH_BROADCAST_WITH_ECHO 0x01 699 #define QETH_BROADCAST_WITHOUT_ECHO 0x02 700 #define QETH_LAYER2_MAC_REGISTERED 0x02 701 struct qeth_card_info { 702 unsigned short unit_addr2; 703 unsigned short cula; 704 u8 chpid; 705 __u16 func_level; 706 char mcl_level[QETH_MCL_LENGTH + 1]; 707 u8 open_when_online:1; 708 u8 promisc_mode:1; 709 u8 use_v1_blkt:1; 710 u8 is_vm_nic:1; 711 int mac_bits; 712 enum qeth_card_types type; 713 enum qeth_link_types link_type; 714 int broadcast_capable; 715 int unique_id; 716 bool layer_enforced; 717 struct qeth_card_blkt blkt; 718 __u32 diagass_support; 719 __u32 hwtrap; 720 }; 721 722 enum qeth_discipline_id { 723 QETH_DISCIPLINE_UNDETERMINED = -1, 724 QETH_DISCIPLINE_LAYER3 = 0, 725 QETH_DISCIPLINE_LAYER2 = 1, 726 }; 727 728 struct qeth_card_options { 729 struct qeth_routing_info route4; 730 struct qeth_ipa_info ipa4; 731 struct qeth_ipa_info adp; /*Adapter parameters*/ 732 struct qeth_routing_info route6; 733 struct qeth_ipa_info ipa6; 734 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */ 735 struct qeth_vnicc_info vnicc; /* VNICC options */ 736 int fake_broadcast; 737 enum qeth_discipline_id layer; 738 int rx_sg_cb; 739 enum qeth_ipa_isolation_modes isolation; 740 enum qeth_ipa_isolation_modes prev_isolation; 741 int sniffer; 742 enum qeth_cq cq; 743 char hsuid[9]; 744 }; 745 746 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2) 747 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3) 748 749 /* 750 * thread bits for qeth_card thread masks 751 */ 752 enum qeth_threads { 753 QETH_RECOVER_THREAD = 1, 754 }; 755 756 struct qeth_osn_info { 757 int (*assist_cb)(struct net_device *dev, void *data); 758 int (*data_cb)(struct sk_buff *skb); 759 }; 760 761 struct qeth_discipline { 762 const struct device_type *devtype; 763 int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done); 764 int (*recover)(void *ptr); 765 int (*setup) (struct ccwgroup_device *); 766 void (*remove) (struct ccwgroup_device *); 767 int (*set_online) (struct ccwgroup_device *); 768 int (*set_offline) (struct ccwgroup_device *); 769 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd); 770 int (*control_event_handler)(struct qeth_card *card, 771 struct qeth_ipa_cmd *cmd); 772 }; 773 774 enum qeth_addr_disposition { 775 QETH_DISP_ADDR_DELETE = 0, 776 QETH_DISP_ADDR_DO_NOTHING = 1, 777 QETH_DISP_ADDR_ADD = 2, 778 }; 779 780 struct qeth_rx { 781 int b_count; 782 int b_index; 783 struct qdio_buffer_element *b_element; 784 int e_offset; 785 int qdio_err; 786 }; 787 788 struct carrier_info { 789 __u8 card_type; 790 __u16 port_mode; 791 __u32 port_speed; 792 }; 793 794 struct qeth_switch_info { 795 __u32 capabilities; 796 __u32 settings; 797 }; 798 799 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT 800 801 struct qeth_card { 802 enum qeth_card_states state; 803 spinlock_t lock; 804 struct ccwgroup_device *gdev; 805 struct qeth_cmd_buffer *read_cmd; 806 struct qeth_channel read; 807 struct qeth_channel write; 808 struct qeth_channel data; 809 810 struct net_device *dev; 811 struct qeth_card_stats stats; 812 struct qeth_card_info info; 813 struct qeth_token token; 814 struct qeth_seqno seqno; 815 struct qeth_card_options options; 816 817 struct workqueue_struct *event_wq; 818 struct workqueue_struct *cmd_wq; 819 wait_queue_head_t wait_q; 820 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 821 DECLARE_HASHTABLE(mac_htable, 4); 822 DECLARE_HASHTABLE(ip_htable, 4); 823 struct mutex ip_lock; 824 DECLARE_HASHTABLE(ip_mc_htable, 4); 825 struct work_struct rx_mode_work; 826 struct work_struct kernel_thread_starter; 827 spinlock_t thread_mask_lock; 828 unsigned long thread_start_mask; 829 unsigned long thread_allowed_mask; 830 unsigned long thread_running_mask; 831 struct qeth_ipato ipato; 832 struct list_head cmd_waiter_list; 833 /* QDIO buffer handling */ 834 struct qeth_qdio_info qdio; 835 int read_or_write_problem; 836 struct qeth_osn_info osn_info; 837 struct qeth_discipline *discipline; 838 atomic_t force_alloc_skb; 839 struct service_level qeth_service_level; 840 struct qdio_ssqd_desc ssqd; 841 debug_info_t *debug; 842 struct mutex conf_mutex; 843 struct mutex discipline_mutex; 844 struct napi_struct napi; 845 struct qeth_rx rx; 846 struct delayed_work buffer_reclaim_work; 847 int reclaim_index; 848 struct work_struct close_dev_work; 849 }; 850 851 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card) 852 { 853 return card->state == CARD_STATE_SOFTSETUP; 854 } 855 856 struct qeth_trap_id { 857 __u16 lparnr; 858 char vmname[8]; 859 __u8 chpid; 860 __u8 ssid; 861 __u16 devno; 862 } __packed; 863 864 /*some helper functions*/ 865 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "") 866 867 static inline bool qeth_netdev_is_registered(struct net_device *dev) 868 { 869 return dev->netdev_ops != NULL; 870 } 871 872 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq) 873 { 874 if (txq == QETH_IQD_MCAST_TXQ) 875 return dev->num_tx_queues - 1; 876 if (txq == dev->num_tx_queues - 1) 877 return QETH_IQD_MCAST_TXQ; 878 return txq; 879 } 880 881 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf, 882 unsigned int elements) 883 { 884 unsigned int i; 885 886 for (i = 0; i < elements; i++) 887 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element)); 888 buf->element[14].sflags = 0; 889 buf->element[15].sflags = 0; 890 } 891 892 /** 893 * qeth_get_elements_for_range() - find number of SBALEs to cover range. 894 * @start: Start of the address range. 895 * @end: Address after the end of the range. 896 * 897 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 898 * the specified address range. 899 */ 900 static inline int qeth_get_elements_for_range(addr_t start, addr_t end) 901 { 902 return PFN_UP(end) - PFN_DOWN(start); 903 } 904 905 static inline int qeth_get_ip_version(struct sk_buff *skb) 906 { 907 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 908 __be16 prot = veth->h_vlan_proto; 909 910 if (prot == htons(ETH_P_8021Q)) 911 prot = veth->h_vlan_encapsulated_proto; 912 913 switch (prot) { 914 case htons(ETH_P_IPV6): 915 return 6; 916 case htons(ETH_P_IP): 917 return 4; 918 default: 919 return 0; 920 } 921 } 922 923 static inline int qeth_get_ether_cast_type(struct sk_buff *skb) 924 { 925 u8 *addr = eth_hdr(skb)->h_dest; 926 927 if (is_multicast_ether_addr(addr)) 928 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST : 929 RTN_MULTICAST; 930 return RTN_UNICAST; 931 } 932 933 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv) 934 { 935 struct dst_entry *dst = skb_dst(skb); 936 struct rt6_info *rt; 937 938 rt = (struct rt6_info *) dst; 939 if (dst) 940 dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0); 941 return dst; 942 } 943 944 static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb, 945 u8 flags) 946 { 947 if ((card->dev->features & NETIF_F_RXCSUM) && 948 (flags & QETH_HDR_EXT_CSUM_TRANSP_REQ)) { 949 skb->ip_summed = CHECKSUM_UNNECESSARY; 950 QETH_CARD_STAT_INC(card, rx_skb_csum); 951 } else { 952 skb->ip_summed = CHECKSUM_NONE; 953 } 954 } 955 956 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv) 957 { 958 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ; 959 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) || 960 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)) 961 *flags |= QETH_HDR_EXT_UDP; 962 } 963 964 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card, 965 struct qeth_buffer_pool_entry *entry) 966 { 967 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list); 968 } 969 970 static inline int qeth_is_diagass_supported(struct qeth_card *card, 971 enum qeth_diags_cmds cmd) 972 { 973 return card->info.diagass_support & (__u32)cmd; 974 } 975 976 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 977 enum qeth_ipa_funcs ipa_func, 978 u16 cmd_code, u32 *data, 979 enum qeth_prot_versions prot); 980 /* IPv4 variant */ 981 static inline int qeth_send_simple_setassparms(struct qeth_card *card, 982 enum qeth_ipa_funcs ipa_func, 983 u16 cmd_code, u32 *data) 984 { 985 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 986 data, QETH_PROT_IPV4); 987 } 988 989 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card, 990 enum qeth_ipa_funcs ipa_func, 991 u16 cmd_code, u32 *data) 992 { 993 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 994 data, QETH_PROT_IPV6); 995 } 996 997 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb); 998 999 extern struct qeth_discipline qeth_l2_discipline; 1000 extern struct qeth_discipline qeth_l3_discipline; 1001 extern const struct ethtool_ops qeth_ethtool_ops; 1002 extern const struct ethtool_ops qeth_osn_ethtool_ops; 1003 extern const struct attribute_group *qeth_generic_attr_groups[]; 1004 extern const struct attribute_group *qeth_osn_attr_groups[]; 1005 extern const struct attribute_group qeth_device_attr_group; 1006 extern const struct attribute_group qeth_device_blkt_group; 1007 extern const struct device_type qeth_generic_devtype; 1008 1009 const char *qeth_get_cardname_short(struct qeth_card *); 1010 int qeth_realloc_buffer_pool(struct qeth_card *, int); 1011 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id); 1012 void qeth_core_free_discipline(struct qeth_card *); 1013 1014 /* exports for qeth discipline device drivers */ 1015 extern struct kmem_cache *qeth_core_header_cache; 1016 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS]; 1017 1018 struct net_device *qeth_clone_netdev(struct net_device *orig); 1019 struct qeth_card *qeth_get_card_by_busid(char *bus_id); 1020 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int); 1021 int qeth_threads_running(struct qeth_card *, unsigned long); 1022 int qeth_do_run_thread(struct qeth_card *, unsigned long); 1023 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long); 1024 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long); 1025 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok); 1026 void qeth_print_status_message(struct qeth_card *); 1027 int qeth_init_qdio_queues(struct qeth_card *); 1028 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, 1029 int (*reply_cb) 1030 (struct qeth_card *, struct qeth_reply *, unsigned long), 1031 void *); 1032 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 1033 enum qeth_ipa_cmds cmd_code, 1034 enum qeth_prot_versions prot, 1035 unsigned int data_length); 1036 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, 1037 unsigned int length, unsigned int ccws, 1038 long timeout); 1039 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 1040 enum qeth_ipa_funcs ipa_func, 1041 u16 cmd_code, 1042 unsigned int data_length, 1043 enum qeth_prot_versions prot); 1044 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 1045 enum qeth_diags_cmds sub_cmd, 1046 unsigned int data_length); 1047 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason); 1048 void qeth_put_cmd(struct qeth_cmd_buffer *iob); 1049 1050 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *, 1051 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *, 1052 struct qeth_hdr **); 1053 void qeth_schedule_recovery(struct qeth_card *); 1054 int qeth_poll(struct napi_struct *napi, int budget); 1055 void qeth_clear_ipacmd_list(struct qeth_card *); 1056 int qeth_qdio_clear_card(struct qeth_card *, int); 1057 void qeth_clear_working_pool_list(struct qeth_card *); 1058 void qeth_drain_output_queues(struct qeth_card *card); 1059 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable); 1060 int qeth_setadpparms_change_macaddr(struct qeth_card *); 1061 void qeth_tx_timeout(struct net_device *); 1062 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 1063 u16 cmd_length); 1064 int qeth_query_switch_attributes(struct qeth_card *card, 1065 struct qeth_switch_info *sw_info); 1066 int qeth_query_card_info(struct qeth_card *card, 1067 struct carrier_info *carrier_info); 1068 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset); 1069 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 1070 struct sk_buff *skb, struct qeth_hdr *hdr, 1071 unsigned int offset, unsigned int hd_len, 1072 int elements_needed); 1073 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 1074 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...); 1075 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback); 1076 int qeth_configure_cq(struct qeth_card *, enum qeth_cq); 1077 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action); 1078 void qeth_trace_features(struct qeth_card *); 1079 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long); 1080 int qeth_set_features(struct net_device *, netdev_features_t); 1081 void qeth_enable_hw_features(struct net_device *dev); 1082 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t); 1083 netdev_features_t qeth_features_check(struct sk_buff *skb, 1084 struct net_device *dev, 1085 netdev_features_t features); 1086 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats); 1087 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1088 u8 cast_type, struct net_device *sb_dev); 1089 int qeth_open(struct net_device *dev); 1090 int qeth_stop(struct net_device *dev); 1091 1092 int qeth_vm_request_mac(struct qeth_card *card); 1093 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 1094 struct qeth_qdio_out_q *queue, int ipv, 1095 void (*fill_header)(struct qeth_qdio_out_q *queue, 1096 struct qeth_hdr *hdr, struct sk_buff *skb, 1097 int ipv, unsigned int data_len)); 1098 1099 /* exports for OSN */ 1100 int qeth_osn_assist(struct net_device *, void *, int); 1101 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **, 1102 int (*assist_cb)(struct net_device *, void *), 1103 int (*data_cb)(struct sk_buff *)); 1104 void qeth_osn_deregister(struct net_device *); 1105 1106 #endif /* __QETH_CORE_H__ */ 1107