1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_MAC_SOFT_RING_H 28 #define _SYS_MAC_SOFT_RING_H 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 #include <sys/types.h> 35 #include <sys/cpuvar.h> 36 #include <sys/cpupart.h> 37 #include <sys/processor.h> 38 #include <sys/stream.h> 39 #include <sys/squeue.h> 40 #include <sys/dlpi.h> 41 #include <sys/mac_impl.h> 42 #include <sys/mac_stat.h> 43 44 #define S_RING_NAMELEN 64 45 46 #define MAX_SR_FANOUT 24 47 48 extern boolean_t mac_soft_ring_enable; 49 extern boolean_t mac_latency_optimize; 50 51 typedef struct mac_soft_ring_s mac_soft_ring_t; 52 typedef struct mac_soft_ring_set_s mac_soft_ring_set_t; 53 54 typedef void (*mac_soft_ring_drain_func_t)(mac_soft_ring_t *); 55 typedef mac_tx_cookie_t (*mac_tx_func_t)(mac_soft_ring_set_t *, mblk_t *, 56 uintptr_t, uint16_t, mblk_t **); 57 58 59 /* Tx notify callback */ 60 typedef struct mac_tx_notify_cb_s { 61 mac_cb_t mtnf_link; /* Linked list of callbacks */ 62 mac_tx_notify_t mtnf_fn; /* The callback function */ 63 void *mtnf_arg; /* Callback function argument */ 64 } mac_tx_notify_cb_t; 65 66 struct mac_soft_ring_s { 67 /* Keep the most used members 64bytes cache aligned */ 68 kmutex_t s_ring_lock; /* lock before using any member */ 69 uint16_t s_ring_type; /* processing model of the sq */ 70 uint16_t s_ring_state; /* state flags and message count */ 71 int s_ring_count; /* # of mblocks in mac_soft_ring */ 72 size_t s_ring_size; /* Size of data queued */ 73 mblk_t *s_ring_first; /* first mblk chain or NULL */ 74 mblk_t *s_ring_last; /* last mblk chain or NULL */ 75 76 mac_direct_rx_t s_ring_rx_func; 77 void *s_ring_rx_arg1; 78 mac_resource_handle_t s_ring_rx_arg2; 79 80 /* 81 * Threshold after which packets get dropped. 82 * Is always greater than s_ring_tx_hiwat 83 */ 84 int s_ring_tx_max_q_cnt; 85 /* # of mblocks after which to apply flow control */ 86 int s_ring_tx_hiwat; 87 /* # of mblocks after which to relieve flow control */ 88 int s_ring_tx_lowat; 89 boolean_t s_ring_tx_woken_up; 90 uint32_t s_ring_hiwat_cnt; /* times blocked for Tx descs */ 91 92 void *s_ring_tx_arg1; 93 void *s_ring_tx_arg2; 94 95 /* Tx notify callback */ 96 mac_cb_info_t s_ring_notify_cb_info; /* cb list info */ 97 mac_cb_t *s_ring_notify_cb_list; /* The cb list */ 98 99 clock_t s_ring_awaken; /* time async thread was awakened */ 100 101 kthread_t *s_ring_run; /* Current thread processing sq */ 102 processorid_t s_ring_cpuid; /* processor to bind to */ 103 processorid_t s_ring_cpuid_save; /* saved cpuid during offline */ 104 kcondvar_t s_ring_async; /* async thread blocks on */ 105 clock_t s_ring_wait; /* lbolts to wait after a fill() */ 106 timeout_id_t s_ring_tid; /* timer id of pending timeout() */ 107 kthread_t *s_ring_worker; /* kernel thread id */ 108 char s_ring_name[S_RING_NAMELEN + 1]; 109 uint32_t s_ring_total_inpkt; 110 uint32_t s_ring_total_rbytes; 111 uint32_t s_ring_drops; 112 struct mac_client_impl_s *s_ring_mcip; 113 kstat_t *s_ring_ksp; 114 115 /* Teardown, poll disable control ops */ 116 kcondvar_t s_ring_client_cv; /* Client wait for control op */ 117 118 mac_soft_ring_set_t *s_ring_set; /* The SRS this ring belongs to */ 119 mac_soft_ring_t *s_ring_next; 120 mac_soft_ring_t *s_ring_prev; 121 mac_soft_ring_drain_func_t s_ring_drain_func; 122 123 mac_tx_stats_t s_st_stat; 124 }; 125 126 typedef void (*mac_srs_drain_proc_t)(mac_soft_ring_set_t *, uint_t); 127 128 /* Transmit side Soft Ring Set */ 129 typedef struct mac_srs_tx_s { 130 /* Members for Tx size processing */ 131 uint32_t st_mode; 132 mac_tx_func_t st_func; 133 void *st_arg1; 134 void *st_arg2; 135 mac_group_t *st_group; /* TX group for share */ 136 boolean_t st_woken_up; 137 138 /* 139 * st_max_q_cnt is the queue depth threshold to limit 140 * outstanding packets on the Tx SRS. Once the limit 141 * is reached, Tx SRS will drop packets until the 142 * limit goes below the threshold. 143 */ 144 uint32_t st_max_q_cnt; /* max. outstanding packets */ 145 /* 146 * st_hiwat is used Tx serializer and bandwidth mode. 147 * This is the queue depth threshold upto which 148 * packets will get buffered with no flow-control 149 * back pressure applied to the caller. Once this 150 * threshold is reached, back pressure will be 151 * applied to the caller of mac_tx() (mac_tx() starts 152 * returning a cookie to indicate a blocked SRS). 153 * st_hiwat should always be lesser than or equal to 154 * st_max_q_cnt. 155 */ 156 uint32_t st_hiwat; /* mblk cnt to apply flow control */ 157 uint32_t st_lowat; /* mblk cnt to relieve flow control */ 158 uint32_t st_hiwat_cnt; /* times blocked for Tx descs */ 159 mac_tx_stats_t st_stat; 160 mac_capab_aggr_t st_capab_aggr; 161 /* 162 * st_soft_rings is used as an array to store aggr Tx soft 163 * rings. When aggr_find_tx_ring() returns a pseudo ring, 164 * the associated soft ring has to be found. st_soft_rings 165 * array stores the soft ring associated with a pseudo Tx 166 * ring and it can be accessed using the pseudo ring 167 * index (mr_index). Note that the ring index is unique 168 * for each ring in a group. 169 */ 170 mac_soft_ring_t **st_soft_rings; 171 } mac_srs_tx_t; 172 173 /* Receive side Soft Ring Set */ 174 typedef struct mac_srs_rx_s { 175 /* 176 * Upcall Function for fanout, Rx processing etc. Perhaps 177 * the same 3 members below can be used for Tx 178 * processing, but looking around, mac_rx_func_t has 179 * proliferated too much into various files at different 180 * places. I am leaving the consolidation battle for 181 * another day. 182 */ 183 mac_direct_rx_t sr_func; /* srs_lock */ 184 void *sr_arg1; /* srs_lock */ 185 mac_resource_handle_t sr_arg2; /* srs_lock */ 186 mac_rx_func_t sr_lower_proc; /* Atomically changed */ 187 uint32_t sr_poll_pkt_cnt; 188 uint32_t sr_poll_thres; 189 190 /* mblk cnt to apply flow control */ 191 uint32_t sr_hiwat; 192 /* mblk cnt to relieve flow control */ 193 uint32_t sr_lowat; 194 mac_rx_stats_t sr_stat; 195 196 /* Times polling was enabled */ 197 uint32_t sr_poll_on; 198 /* Times polling was enabled by worker thread */ 199 uint32_t sr_worker_poll_on; 200 /* Times polling was disabled */ 201 uint32_t sr_poll_off; 202 /* Poll thread signalled count */ 203 uint32_t sr_poll_thr_sig; 204 /* Poll thread busy */ 205 uint32_t sr_poll_thr_busy; 206 /* SRS drains, stays in poll mode but doesn't poll */ 207 uint32_t sr_poll_drain_no_poll; 208 /* 209 * SRS has nothing to do and no packets in H/W but 210 * there is a backlog in softrings. SRS stays in 211 * poll mode but doesn't do polling. 212 */ 213 uint32_t sr_poll_no_poll; 214 /* Active polling restarted */ 215 uint32_t sr_below_hiwat; 216 /* Found packets in last poll so try and poll again */ 217 uint32_t sr_poll_again; 218 /* 219 * Packets in queue but poll thread not allowed to process so 220 * signal the worker thread. 221 */ 222 uint32_t sr_poll_sig_worker; 223 /* 224 * Poll thread has nothing to do and H/W has nothing so 225 * reenable the interrupts. 226 */ 227 uint32_t sr_poll_intr_enable; 228 /* 229 * Poll thread has nothing to do and worker thread was already 230 * running so it can decide to reenable interrupt or poll again. 231 */ 232 uint32_t sr_poll_goto_sleep; 233 /* Worker thread goes back to draining the queue */ 234 uint32_t sr_drain_again; 235 /* More Packets in queue so signal the poll thread to drain */ 236 uint32_t sr_drain_poll_sig; 237 /* More Packets in queue so signal the worker thread to drain */ 238 uint32_t sr_drain_worker_sig; 239 /* Poll thread is already running so worker has nothing to do */ 240 uint32_t sr_drain_poll_running; 241 /* We have packets already queued so keep polling */ 242 uint32_t sr_drain_keep_polling; 243 /* Drain is done and interrupts are reenabled */ 244 uint32_t sr_drain_finish_intr; 245 /* Polling thread needs to schedule worker wakeup */ 246 uint32_t sr_poll_worker_wakeup; 247 } mac_srs_rx_t; 248 249 /* 250 * mac_soft_ring_set_s: 251 * This is used both for Tx and Rx side. The srs_type identifies Rx or 252 * Tx type. 253 * 254 * Note that the structure is carefully crafted, with Rx elements coming 255 * first followed by Tx specific members. Future additions to this 256 * structure should follow the same guidelines. 257 * 258 * Rx-side notes: 259 * mac_rx_classify_flow_add() always creates a mac_soft_ring_set_t and fn_flow 260 * points to info from it (func = srs_lower_proc, arg = soft_ring_set). On 261 * interrupt path, srs_lower_proc does B/W adjustment and switch to polling mode 262 * (if poll capable) and feeds the packets to soft_ring_list via choosen 263 * fanout type (specified by srs_type). In poll mode, the poll thread which is 264 * also a pointer can pick up the packets and feed them to various 265 * soft_ring_list. 266 * 267 * The srs_type can either be protocol based or fanout based where fanout itelf 268 * can be various types 269 * 270 * The polling works by turning off interrupts as soon as a packets 271 * are queued on the soft ring set. Once the backlog is clear and poll 272 * thread return empty handed i.e. Rx ring doesn't have anything, the 273 * interrupt is turned back on. For this purpose we keep a separate 274 * srs_poll_pkt_cnt counter which tracks the packets queued between SRS 275 * and the soft rings as well. The counter is incremented when packets 276 * are queued and decremented when SRS processes them (in case it has 277 * no soft rings) or the soft ring process them. Its important that 278 * in case SRS has softrings, the decrement doesn't happen till the 279 * packet is processed by the soft rings since it takes very little time 280 * for SRS to queue packet from SRS to soft rings and it will keep 281 * bringing more packets in the system faster than soft rings can 282 * process them. 283 * 284 * Tx side notes: 285 * The srs structure acts as a serializer with a worker thread. The 286 * default behavior of srs though is to act as a pass-thru. The queues 287 * (srs_first, srs_last, srs_count) get used when Tx ring runs out of Tx 288 * descriptors or to enforce bandwidth limits. 289 * 290 * When multiple Tx rings are present, the SRS state will be set to 291 * SRS_FANOUT_OTH. Outgoing packets coming into mac_tx_srs_process() 292 * function will be fanned out to one of the Tx side soft rings based on 293 * a hint passed in mac_tx_srs_process(). Each soft ring, in turn, will 294 * be associated with a distinct h/w Tx ring. 295 */ 296 297 struct mac_soft_ring_set_s { 298 /* 299 * Common elements, common to both Rx and Tx SRS type. 300 * The following block of fields are protected by srs_lock 301 */ 302 kmutex_t srs_lock; 303 uint32_t srs_type; 304 uint32_t srs_state; /* state flags */ 305 uint32_t srs_count; 306 mblk_t *srs_first; /* first mblk chain or NULL */ 307 mblk_t *srs_last; /* last mblk chain or NULL */ 308 kcondvar_t srs_async; /* cv for worker thread */ 309 kcondvar_t srs_cv; /* cv for poll thread */ 310 kcondvar_t srs_quiesce_done_cv; /* cv for removal */ 311 timeout_id_t srs_tid; /* timeout id for pending timeout */ 312 313 /* 314 * List of soft rings & processing function. 315 * The following block is protected by Rx quiescence. 316 * i.e. they can be changed only after quiescing the SRS 317 * Protected by srs_lock. 318 */ 319 mac_soft_ring_t *srs_soft_ring_head; 320 mac_soft_ring_t *srs_soft_ring_tail; 321 int srs_soft_ring_count; 322 int srs_soft_ring_quiesced_count; 323 int srs_soft_ring_condemned_count; 324 mac_soft_ring_t **srs_tcp_soft_rings; 325 int srs_tcp_ring_count; 326 mac_soft_ring_t **srs_udp_soft_rings; 327 int srs_udp_ring_count; 328 mac_soft_ring_t **srs_oth_soft_rings; 329 int srs_oth_ring_count; 330 /* 331 * srs_tx_soft_rings is used by tx_srs in 332 * when operating in multi tx ring mode. 333 */ 334 mac_soft_ring_t **srs_tx_soft_rings; 335 int srs_tx_ring_count; 336 337 /* 338 * Bandwidth control related members. 339 * They are common to both Rx- and Tx-side. 340 * Following protected by srs_lock 341 */ 342 mac_bw_ctl_t *srs_bw; 343 size_t srs_size; /* Size of packets queued in bytes */ 344 pri_t srs_pri; 345 346 mac_soft_ring_set_t *srs_next; /* mac_srs_g_lock */ 347 mac_soft_ring_set_t *srs_prev; /* mac_srs_g_lock */ 348 349 /* Attribute specific drain func (BW ctl vs non-BW ctl) */ 350 mac_srs_drain_proc_t srs_drain_func; /* Write once (WO) */ 351 352 /* 353 * If the associated ring is exclusively used by a mac client, e.g., 354 * an aggregation, this fields is used to keep a reference to the 355 * MAC client's pseudo ring. 356 */ 357 mac_resource_handle_t srs_mrh; 358 /* 359 * The following blocks are write once (WO) and valid for the life 360 * of the SRS 361 */ 362 struct mac_client_impl_s *srs_mcip; /* back ptr to mac client */ 363 void *srs_flent; /* back ptr to flent */ 364 mac_ring_t *srs_ring; /* Ring Descriptor */ 365 366 /* Teardown, disable control ops */ 367 kcondvar_t srs_client_cv; /* Client wait for the control op */ 368 369 kthread_t *srs_worker; /* WO, worker thread */ 370 kthread_t *srs_poll_thr; /* WO, poll thread */ 371 372 uint_t srs_ind; /* Round Robin indx for picking up SR */ 373 processorid_t srs_worker_cpuid; /* processor to bind to */ 374 processorid_t srs_worker_cpuid_save; /* saved cpuid during offline */ 375 processorid_t srs_poll_cpuid; /* processor to bind to */ 376 processorid_t srs_poll_cpuid_save; /* saved cpuid during offline */ 377 uint_t srs_fanout_state; 378 mac_cpus_t srs_cpu; 379 380 mac_srs_rx_t srs_rx; 381 mac_srs_tx_t srs_tx; 382 kstat_t *srs_ksp; 383 }; 384 385 /* 386 * type flags - combination allowed to process and drain the queue 387 */ 388 #define ST_RING_WORKER_ONLY 0x0001 /* Worker thread only */ 389 #define ST_RING_ANY 0x0002 /* Any thread can process the queue */ 390 #define ST_RING_TCP 0x0004 391 #define ST_RING_UDP 0x0008 392 #define ST_RING_OTH 0x0010 393 394 #define ST_RING_BW_CTL 0x0020 395 #define ST_RING_TX 0x0040 396 397 /* 398 * State flags. 399 */ 400 #define S_RING_PROC 0x0001 /* being processed */ 401 #define S_RING_BOUND 0x0002 /* Worker thread is bound to a cpu */ 402 #define S_RING_BLOCK 0x0004 /* No Tx descs */ 403 #define S_RING_TX_HIWAT 0x0008 /* Tx high watermark reached */ 404 405 #define S_RING_WAKEUP_CLIENT 0x0010 /* flow ctrl, client wakeup needed */ 406 #define S_RING_BLANK 0x0020 /* Has been put into polling mode */ 407 #define S_RING_CLIENT_WAIT 0x0040 /* Client waiting for control op */ 408 409 #define S_RING_CONDEMNED 0x0100 /* Being torn down */ 410 #define S_RING_CONDEMNED_DONE 0x0200 /* Being torn down */ 411 #define S_RING_QUIESCE 0x0400 /* No traffic flow, transient flag */ 412 #define S_RING_QUIESCE_DONE 0x0800 /* No traffic flow, transient flag */ 413 414 #define S_RING_RESTART 0x1000 /* Go back to normal traffic flow */ 415 #define S_RING_ENQUEUED 0x2000 /* Pkts enqueued in Tx soft ring */ 416 417 /* 418 * arguments for processors to bind to 419 */ 420 #define S_RING_BIND_NONE -1 421 422 /* 423 * defines for srs_type - identifies a link or a sub-flow 424 * and other static characteristics of a SRS like a tx 425 * srs, tcp only srs, etc. 426 */ 427 #define SRST_LINK 0x00000001 428 #define SRST_FLOW 0x00000002 429 #define SRST_NO_SOFT_RINGS 0x00000004 430 #define SRST_TCP_ONLY 0x00000008 431 432 #define SRST_FANOUT_PROTO 0x00000010 433 #define SRST_FANOUT_SRC_IP 0x00000020 434 #define SRST_FANOUT_OTH 0x00000040 435 #define SRST_DEFAULT_GRP 0x00000080 436 437 #define SRST_TX 0x00000100 438 #define SRST_BW_CONTROL 0x00000200 439 #define SRST_DIRECT_POLL 0x00000400 440 441 #define SRST_DLS_BYPASS 0x00001000 442 #define SRST_CLIENT_POLL_ENABLED 0x00002000 443 444 /* 445 * soft ring set flags. These bits are dynamic in nature and get 446 * applied to srs_state. They reflect the state of SRS at any 447 * point of time 448 */ 449 #define SRS_BLANK 0x00000001 450 #define SRS_WORKER_BOUND 0x00000002 451 #define SRS_POLL_BOUND 0x00000004 452 #define SRS_POLLING_CAPAB 0x00000008 453 454 #define SRS_PROC 0x00000010 455 #define SRS_GET_PKTS 0x00000020 456 #define SRS_POLLING 0x00000040 457 #define SRS_BW_ENFORCED 0x00000080 458 459 #define SRS_WORKER 0x00000100 460 #define SRS_ENQUEUED 0x00000200 461 #define SRS_ANY_PROCESS 0x00000400 462 #define SRS_PROC_FAST 0x00000800 463 464 #define SRS_POLL_PROC 0x00001000 465 #define SRS_TX_BLOCKED 0x00002000 /* out of Tx descs */ 466 #define SRS_TX_HIWAT 0x00004000 /* Tx count exceeds hiwat */ 467 #define SRS_TX_WAKEUP_CLIENT 0x00008000 /* Flow-ctl: wakeup client */ 468 469 #define SRS_CLIENT_PROC 0x00010000 470 #define SRS_CLIENT_WAIT 0x00020000 471 #define SRS_QUIESCE 0x00040000 472 #define SRS_QUIESCE_DONE 0x00080000 473 474 #define SRS_CONDEMNED 0x00100000 475 #define SRS_CONDEMNED_DONE 0x00200000 476 #define SRS_POLL_THR_QUIESCED 0x00400000 477 #define SRS_RESTART 0x00800000 478 479 #define SRS_RESTART_DONE 0x01000000 480 #define SRS_POLL_THR_RESTART 0x02000000 481 #define SRS_IN_GLIST 0x04000000 482 #define SRS_POLL_THR_EXITED 0x08000000 483 484 #define SRS_QUIESCE_PERM 0x10000000 485 #define SRS_LATENCY_OPT 0x20000000 486 #define SRS_SOFTRING_QUEUE 0x40000000 487 488 #define SRS_QUIESCED(srs) (srs->srs_state & SRS_QUIESCE_DONE) 489 490 /* 491 * If the SRS_QUIESCE_PERM flag is set, the SRS worker thread will not be 492 * able to be restarted. 493 */ 494 #define SRS_QUIESCED_PERMANENT(srs) (srs->srs_state & SRS_QUIESCE_PERM) 495 496 /* 497 * soft ring set (SRS) Tx modes 498 */ 499 typedef enum { 500 SRS_TX_DEFAULT = 0, 501 SRS_TX_SERIALIZE, 502 SRS_TX_FANOUT, 503 SRS_TX_BW, 504 SRS_TX_BW_FANOUT, 505 SRS_TX_AGGR, 506 SRS_TX_BW_AGGR 507 } mac_tx_srs_mode_t; 508 509 /* 510 * SRS fanout states 511 */ 512 typedef enum { 513 SRS_FANOUT_UNINIT = 0, 514 SRS_FANOUT_INIT, 515 SRS_FANOUT_REINIT 516 } mac_srs_fanout_state_t; 517 518 /* 519 * Structure for dls statistics 520 */ 521 struct dls_kstats { 522 kstat_named_t dlss_soft_ring_pkt_drop; 523 }; 524 525 extern struct dls_kstats dls_kstat; 526 527 #define DLS_BUMP_STAT(x, y) (dls_kstat.x.value.ui32 += y) 528 529 /* Turn dynamic polling off */ 530 #define MAC_SRS_POLLING_OFF(mac_srs) { \ 531 ASSERT(MUTEX_HELD(&(mac_srs)->srs_lock)); \ 532 if (((mac_srs)->srs_state & (SRS_POLLING_CAPAB|SRS_POLLING)) == \ 533 (SRS_POLLING_CAPAB|SRS_POLLING)) { \ 534 (mac_srs)->srs_state &= ~SRS_POLLING; \ 535 (void) mac_hwring_enable_intr((mac_ring_handle_t) \ 536 (mac_srs)->srs_ring); \ 537 (mac_srs)->srs_rx.sr_poll_off++; \ 538 } \ 539 } 540 541 #define MAC_COUNT_CHAIN(mac_srs, head, tail, cnt, sz) { \ 542 mblk_t *tmp; \ 543 boolean_t bw_ctl = B_FALSE; \ 544 \ 545 ASSERT((head) != NULL); \ 546 cnt = 0; \ 547 sz = 0; \ 548 if ((mac_srs)->srs_type & SRST_BW_CONTROL) \ 549 bw_ctl = B_TRUE; \ 550 tmp = tail = (head); \ 551 if ((head)->b_next == NULL) { \ 552 cnt = 1; \ 553 if (bw_ctl) \ 554 sz += msgdsize(head); \ 555 } else { \ 556 while (tmp != NULL) { \ 557 tail = tmp; \ 558 cnt++; \ 559 if (bw_ctl) \ 560 sz += msgdsize(tmp); \ 561 tmp = tmp->b_next; \ 562 } \ 563 } \ 564 } 565 566 /* 567 * Decrement the cumulative packet count in SRS and its 568 * soft rings. If the srs_poll_pkt_cnt goes below lowat, then check 569 * if if the interface was left in a polling mode and no one 570 * is really processing the queue (to get the interface out 571 * of poll mode). If no one is processing the queue, then 572 * acquire the PROC and signal the poll thread to check the 573 * interface for packets and get the interface back to interrupt 574 * mode if nothing is found. 575 */ 576 #define MAC_UPDATE_SRS_COUNT_LOCKED(mac_srs, cnt) { \ 577 mac_srs_rx_t *srs_rx = &(mac_srs)->srs_rx; \ 578 ASSERT(MUTEX_HELD(&(mac_srs)->srs_lock)); \ 579 \ 580 srs_rx->sr_poll_pkt_cnt -= cnt; \ 581 if ((srs_rx->sr_poll_pkt_cnt <= srs_rx->sr_poll_thres) && \ 582 (((mac_srs)->srs_state & \ 583 (SRS_POLLING|SRS_PROC|SRS_GET_PKTS)) == SRS_POLLING)) \ 584 { \ 585 (mac_srs)->srs_state |= (SRS_PROC|SRS_GET_PKTS); \ 586 cv_signal(&(mac_srs)->srs_cv); \ 587 srs_rx->sr_below_hiwat++; \ 588 } \ 589 } 590 591 /* 592 * The following two macros are used to update the inbound packet and byte. 593 * count. The packet and byte count reflect the packets and bytes that are 594 * taken out of the SRS's queue, i.e. indicating they are being delivered. 595 * The srs_count and srs_size are updated in different locations as the 596 * srs_size is also used to take into account any bandwidth limits. The 597 * srs_size is updated only when a soft ring, if any, sends a packet up, 598 * as opposed to updating it when the SRS sends a packet to the SR, i.e. 599 * the srs_size reflects the packets in the SRS and SRs. These 600 * macros decrement the srs_size and srs_count and also increment the 601 * ipackets and ibytes stats resp. 602 * 603 * xxx-venu These are done under srs_lock, for now we still update 604 * mci_stat_ibytes/mci_stat_ipackets atomically, need to check if 605 * just updating them would be accurate enough. 606 * 607 * If we are updating these for a sub-flow SRS, then we need to also 608 * updated it's MAC client bandwidth info, if the MAC client is also 609 * bandwidth regulated. 610 */ 611 #define MAC_UPDATE_SRS_SIZE_LOCKED(srs, sz) { \ 612 if ((srs)->srs_type & SRST_BW_CONTROL) { \ 613 mutex_enter(&(srs)->srs_bw->mac_bw_lock); \ 614 (srs)->srs_bw->mac_bw_sz -= (sz); \ 615 (srs)->srs_bw->mac_bw_used += (sz); \ 616 mutex_exit(&(srs)->srs_bw->mac_bw_lock); \ 617 } \ 618 } 619 620 #define MAC_TX_UPDATE_BW_INFO(srs, sz) { \ 621 (srs)->srs_bw->mac_bw_sz -= (sz); \ 622 (srs)->srs_bw->mac_bw_used += (sz); \ 623 } 624 625 #define MAC_TX_SOFT_RINGS(mac_srs) ((mac_srs)->srs_tx_ring_count >= 1) 626 627 /* Soft ring flags for teardown */ 628 #define SRS_POLL_THR_OWNER (SRS_PROC | SRS_POLLING | SRS_GET_PKTS) 629 #define SRS_PAUSE (SRS_CONDEMNED | SRS_QUIESCE) 630 #define S_RING_PAUSE (S_RING_CONDEMNED | S_RING_QUIESCE) 631 632 /* Soft rings */ 633 extern void mac_soft_ring_init(void); 634 extern void mac_soft_ring_finish(void); 635 extern void mac_fanout_setup(mac_client_impl_t *, flow_entry_t *, 636 mac_resource_props_t *, mac_direct_rx_t, void *, mac_resource_handle_t, 637 cpupart_t *); 638 639 extern void mac_soft_ring_worker_wakeup(mac_soft_ring_t *); 640 extern void mac_soft_ring_blank(void *, time_t, uint_t, int); 641 extern mblk_t *mac_soft_ring_poll(mac_soft_ring_t *, int); 642 extern void mac_soft_ring_destroy(mac_soft_ring_t *); 643 extern void mac_soft_ring_dls_bypass(void *, mac_direct_rx_t, void *); 644 645 /* Rx SRS */ 646 extern mac_soft_ring_set_t *mac_srs_create(struct mac_client_impl_s *, 647 flow_entry_t *, uint32_t, mac_direct_rx_t, void *, mac_resource_handle_t, 648 mac_ring_t *); 649 extern void mac_srs_free(mac_soft_ring_set_t *); 650 extern void mac_srs_signal(mac_soft_ring_set_t *, uint_t); 651 extern cpu_t *mac_srs_bind(mac_soft_ring_set_t *, processorid_t); 652 extern void mac_rx_srs_retarget_intr(mac_soft_ring_set_t *, processorid_t); 653 extern void mac_tx_srs_retarget_intr(mac_soft_ring_set_t *); 654 655 extern void mac_srs_change_upcall(void *, mac_direct_rx_t, void *); 656 extern void mac_srs_quiesce_initiate(mac_soft_ring_set_t *); 657 extern void mac_srs_client_poll_enable(struct mac_client_impl_s *, 658 mac_soft_ring_set_t *); 659 extern void mac_srs_client_poll_disable(struct mac_client_impl_s *, 660 mac_soft_ring_set_t *); 661 extern void mac_srs_client_poll_quiesce(struct mac_client_impl_s *, 662 mac_soft_ring_set_t *); 663 extern void mac_srs_client_poll_restart(struct mac_client_impl_s *, 664 mac_soft_ring_set_t *); 665 extern void mac_rx_srs_quiesce(mac_soft_ring_set_t *, uint_t); 666 extern void mac_rx_srs_restart(mac_soft_ring_set_t *); 667 extern void mac_rx_srs_subflow_process(void *, mac_resource_handle_t, mblk_t *, 668 boolean_t); 669 extern void mac_tx_srs_quiesce(mac_soft_ring_set_t *, uint_t); 670 671 /* Tx SRS, Tx softring */ 672 extern void mac_tx_srs_wakeup(mac_soft_ring_set_t *, mac_ring_handle_t); 673 extern void mac_tx_srs_setup(struct mac_client_impl_s *, flow_entry_t *); 674 extern mac_tx_func_t mac_tx_get_func(uint32_t); 675 extern mblk_t *mac_tx_send(mac_client_handle_t, mac_ring_handle_t, mblk_t *, 676 mac_tx_stats_t *); 677 extern boolean_t mac_tx_srs_ring_present(mac_soft_ring_set_t *, mac_ring_t *); 678 extern mac_soft_ring_t *mac_tx_srs_get_soft_ring(mac_soft_ring_set_t *, 679 mac_ring_t *); 680 extern void mac_tx_srs_add_ring(mac_soft_ring_set_t *, mac_ring_t *); 681 extern void mac_tx_srs_del_ring(mac_soft_ring_set_t *, mac_ring_t *); 682 extern mac_tx_cookie_t mac_tx_srs_no_desc(mac_soft_ring_set_t *, mblk_t *, 683 uint16_t, mblk_t **); 684 685 /* Subflow specific stuff */ 686 extern int mac_srs_flow_create(struct mac_client_impl_s *, flow_entry_t *, 687 mac_resource_props_t *, int, int, mac_direct_rx_t); 688 extern void mac_srs_update_bwlimit(flow_entry_t *, mac_resource_props_t *); 689 extern void mac_srs_adjust_subflow_bwlimit(struct mac_client_impl_s *); 690 extern void mac_srs_update_drv(struct mac_client_impl_s *); 691 extern void mac_update_srs_priority(mac_soft_ring_set_t *, pri_t); 692 extern void mac_client_update_classifier(mac_client_impl_t *, boolean_t); 693 694 extern void mac_soft_ring_intr_enable(void *); 695 extern boolean_t mac_soft_ring_intr_disable(void *); 696 extern mac_soft_ring_t *mac_soft_ring_create(int, clock_t, uint16_t, 697 pri_t, mac_client_impl_t *, mac_soft_ring_set_t *, 698 processorid_t, mac_direct_rx_t, void *, mac_resource_handle_t); 699 extern cpu_t *mac_soft_ring_bind(mac_soft_ring_t *, processorid_t); 700 extern void mac_soft_ring_unbind(mac_soft_ring_t *); 701 extern void mac_soft_ring_free(mac_soft_ring_t *); 702 extern void mac_soft_ring_signal(mac_soft_ring_t *, uint_t); 703 extern void mac_rx_soft_ring_process(mac_client_impl_t *, mac_soft_ring_t *, 704 mblk_t *, mblk_t *, int, size_t); 705 extern mac_tx_cookie_t mac_tx_soft_ring_process(mac_soft_ring_t *, 706 mblk_t *, uint16_t, mblk_t **); 707 extern void mac_srs_worker_quiesce(mac_soft_ring_set_t *); 708 extern void mac_srs_worker_restart(mac_soft_ring_set_t *); 709 extern void mac_rx_attach_flow_srs(mac_impl_t *, flow_entry_t *, 710 mac_soft_ring_set_t *, mac_ring_t *, mac_classify_type_t); 711 712 extern void mac_rx_srs_drain_bw(mac_soft_ring_set_t *, uint_t); 713 extern void mac_rx_srs_drain(mac_soft_ring_set_t *, uint_t); 714 extern void mac_rx_srs_process(void *, mac_resource_handle_t, mblk_t *, 715 boolean_t); 716 extern void mac_srs_worker(mac_soft_ring_set_t *); 717 extern void mac_rx_srs_poll_ring(mac_soft_ring_set_t *); 718 extern void mac_tx_srs_drain(mac_soft_ring_set_t *, uint_t); 719 720 extern void mac_tx_srs_restart(mac_soft_ring_set_t *); 721 extern void mac_rx_srs_remove(mac_soft_ring_set_t *); 722 723 #ifdef __cplusplus 724 } 725 #endif 726 727 #endif /* _SYS_MAC_SOFT_RING_H */ 728