1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2021 Microsoft Corp. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 #include <sys/kthread.h> 38 #include <sys/malloc.h> 39 #include <sys/mbuf.h> 40 #include <sys/smp.h> 41 #include <sys/socket.h> 42 #include <sys/sockio.h> 43 #include <sys/time.h> 44 #include <sys/eventhandler.h> 45 46 #include <machine/bus.h> 47 #include <machine/resource.h> 48 #include <machine/in_cksum.h> 49 50 #include <net/if.h> 51 #include <net/if_var.h> 52 #include <net/if_types.h> 53 #include <net/if_vlan_var.h> 54 #ifdef RSS 55 #include <net/rss_config.h> 56 #endif 57 58 #include <netinet/in_systm.h> 59 #include <netinet/in.h> 60 #include <netinet/if_ether.h> 61 #include <netinet/ip.h> 62 #include <netinet/ip6.h> 63 #include <netinet/tcp.h> 64 #include <netinet/udp.h> 65 66 #include "mana.h" 67 #include "mana_sysctl.h" 68 69 static int mana_up(struct mana_port_context *apc); 70 static int mana_down(struct mana_port_context *apc); 71 72 static void 73 mana_rss_key_fill(void *k, size_t size) 74 { 75 static bool rss_key_generated = false; 76 static uint8_t rss_key[MANA_HASH_KEY_SIZE]; 77 78 KASSERT(size <= MANA_HASH_KEY_SIZE, 79 ("Request more buytes than MANA RSS key can hold")); 80 81 if (!rss_key_generated) { 82 arc4random_buf(rss_key, MANA_HASH_KEY_SIZE); 83 rss_key_generated = true; 84 } 85 memcpy(k, rss_key, size); 86 } 87 88 static int 89 mana_ifmedia_change(if_t ifp __unused) 90 { 91 return EOPNOTSUPP; 92 } 93 94 static void 95 mana_ifmedia_status(if_t ifp, struct ifmediareq *ifmr) 96 { 97 struct mana_port_context *apc = if_getsoftc(ifp); 98 99 if (!apc) { 100 if_printf(ifp, "Port not available\n"); 101 return; 102 } 103 104 MANA_APC_LOCK_LOCK(apc); 105 106 ifmr->ifm_status = IFM_AVALID; 107 ifmr->ifm_active = IFM_ETHER; 108 109 if (!apc->port_is_up) { 110 MANA_APC_LOCK_UNLOCK(apc); 111 mana_dbg(NULL, "Port %u link is down\n", apc->port_idx); 112 return; 113 } 114 115 ifmr->ifm_status |= IFM_ACTIVE; 116 ifmr->ifm_active |= IFM_100G_DR | IFM_FDX; 117 118 MANA_APC_LOCK_UNLOCK(apc); 119 } 120 121 static uint64_t 122 mana_get_counter(if_t ifp, ift_counter cnt) 123 { 124 struct mana_port_context *apc = if_getsoftc(ifp); 125 struct mana_port_stats *stats = &apc->port_stats; 126 127 switch (cnt) { 128 case IFCOUNTER_IPACKETS: 129 return (counter_u64_fetch(stats->rx_packets)); 130 case IFCOUNTER_OPACKETS: 131 return (counter_u64_fetch(stats->tx_packets)); 132 case IFCOUNTER_IBYTES: 133 return (counter_u64_fetch(stats->rx_bytes)); 134 case IFCOUNTER_OBYTES: 135 return (counter_u64_fetch(stats->tx_bytes)); 136 case IFCOUNTER_IQDROPS: 137 return (counter_u64_fetch(stats->rx_drops)); 138 case IFCOUNTER_OQDROPS: 139 return (counter_u64_fetch(stats->tx_drops)); 140 default: 141 return (if_get_counter_default(ifp, cnt)); 142 } 143 } 144 145 static void 146 mana_qflush(if_t ifp) 147 { 148 if_qflush(ifp); 149 } 150 151 int 152 mana_restart(struct mana_port_context *apc) 153 { 154 int rc = 0; 155 156 MANA_APC_LOCK_LOCK(apc); 157 if (apc->port_is_up) 158 mana_down(apc); 159 160 rc = mana_up(apc); 161 MANA_APC_LOCK_UNLOCK(apc); 162 163 return (rc); 164 } 165 166 static int 167 mana_ioctl(if_t ifp, u_long command, caddr_t data) 168 { 169 struct mana_port_context *apc = if_getsoftc(ifp); 170 struct ifrsskey *ifrk; 171 struct ifrsshash *ifrh; 172 struct ifreq *ifr; 173 uint16_t new_mtu; 174 int rc = 0; 175 176 switch (command) { 177 case SIOCSIFMTU: 178 ifr = (struct ifreq *)data; 179 new_mtu = ifr->ifr_mtu; 180 if (if_getmtu(ifp) == new_mtu) 181 break; 182 if ((new_mtu + 18 > MAX_FRAME_SIZE) || 183 (new_mtu + 18 < MIN_FRAME_SIZE)) { 184 if_printf(ifp, "Invalid MTU. new_mtu: %d, " 185 "max allowed: %d, min allowed: %d\n", 186 new_mtu, MAX_FRAME_SIZE - 18, MIN_FRAME_SIZE - 18); 187 return EINVAL; 188 } 189 MANA_APC_LOCK_LOCK(apc); 190 if (apc->port_is_up) 191 mana_down(apc); 192 193 apc->frame_size = new_mtu + 18; 194 if_setmtu(ifp, new_mtu); 195 mana_dbg(NULL, "Set MTU to %d\n", new_mtu); 196 197 rc = mana_up(apc); 198 MANA_APC_LOCK_UNLOCK(apc); 199 break; 200 201 case SIOCSIFFLAGS: 202 if (if_getflags(ifp) & IFF_UP) { 203 if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) == 0) { 204 MANA_APC_LOCK_LOCK(apc); 205 if (!apc->port_is_up) 206 rc = mana_up(apc); 207 MANA_APC_LOCK_UNLOCK(apc); 208 } 209 } else { 210 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) { 211 MANA_APC_LOCK_LOCK(apc); 212 if (apc->port_is_up) 213 mana_down(apc); 214 MANA_APC_LOCK_UNLOCK(apc); 215 } 216 } 217 break; 218 219 case SIOCSIFMEDIA: 220 case SIOCGIFMEDIA: 221 case SIOCGIFXMEDIA: 222 ifr = (struct ifreq *)data; 223 rc = ifmedia_ioctl(ifp, ifr, &apc->media, command); 224 break; 225 226 case SIOCGIFRSSKEY: 227 ifrk = (struct ifrsskey *)data; 228 ifrk->ifrk_func = RSS_FUNC_TOEPLITZ; 229 ifrk->ifrk_keylen = MANA_HASH_KEY_SIZE; 230 memcpy(ifrk->ifrk_key, apc->hashkey, MANA_HASH_KEY_SIZE); 231 break; 232 233 case SIOCGIFRSSHASH: 234 ifrh = (struct ifrsshash *)data; 235 ifrh->ifrh_func = RSS_FUNC_TOEPLITZ; 236 ifrh->ifrh_types = 237 RSS_TYPE_TCP_IPV4 | 238 RSS_TYPE_UDP_IPV4 | 239 RSS_TYPE_TCP_IPV6 | 240 RSS_TYPE_UDP_IPV6; 241 break; 242 243 default: 244 rc = ether_ioctl(ifp, command, data); 245 break; 246 } 247 248 return (rc); 249 } 250 251 static inline void 252 mana_alloc_counters(counter_u64_t *begin, int size) 253 { 254 counter_u64_t *end = (counter_u64_t *)((char *)begin + size); 255 256 for (; begin < end; ++begin) 257 *begin = counter_u64_alloc(M_WAITOK); 258 } 259 260 static inline void 261 mana_free_counters(counter_u64_t *begin, int size) 262 { 263 counter_u64_t *end = (counter_u64_t *)((char *)begin + size); 264 265 for (; begin < end; ++begin) 266 counter_u64_free(*begin); 267 } 268 269 static bool 270 mana_can_tx(struct gdma_queue *wq) 271 { 272 return mana_gd_wq_avail_space(wq) >= MAX_TX_WQE_SIZE; 273 } 274 275 static inline int 276 mana_tx_map_mbuf(struct mana_port_context *apc, 277 struct mana_send_buf_info *tx_info, 278 struct mbuf **m_head, struct mana_tx_package *tp, 279 struct mana_stats *tx_stats) 280 { 281 struct gdma_dev *gd = apc->ac->gdma_dev; 282 bus_dma_segment_t segs[MAX_MBUF_FRAGS]; 283 struct mbuf *m = *m_head; 284 int err, nsegs, i; 285 286 err = bus_dmamap_load_mbuf_sg(apc->tx_buf_tag, tx_info->dma_map, 287 m, segs, &nsegs, BUS_DMA_NOWAIT); 288 if (err == EFBIG) { 289 struct mbuf *m_new; 290 291 counter_u64_add(tx_stats->collapse, 1); 292 m_new = m_collapse(m, M_NOWAIT, MAX_MBUF_FRAGS); 293 if (unlikely(m_new == NULL)) { 294 counter_u64_add(tx_stats->collapse_err, 1); 295 return ENOBUFS; 296 } else { 297 *m_head = m = m_new; 298 } 299 300 mana_warn(NULL, 301 "Too many segs in orig mbuf, m_collapse called\n"); 302 303 err = bus_dmamap_load_mbuf_sg(apc->tx_buf_tag, 304 tx_info->dma_map, m, segs, &nsegs, BUS_DMA_NOWAIT); 305 } 306 if (!err) { 307 for (i = 0; i < nsegs; i++) { 308 tp->wqe_req.sgl[i].address = segs[i].ds_addr; 309 tp->wqe_req.sgl[i].mem_key = gd->gpa_mkey; 310 tp->wqe_req.sgl[i].size = segs[i].ds_len; 311 } 312 tp->wqe_req.num_sge = nsegs; 313 314 tx_info->mbuf = *m_head; 315 316 bus_dmamap_sync(apc->tx_buf_tag, tx_info->dma_map, 317 BUS_DMASYNC_PREWRITE); 318 } 319 320 return err; 321 } 322 323 static inline void 324 mana_tx_unmap_mbuf(struct mana_port_context *apc, 325 struct mana_send_buf_info *tx_info) 326 { 327 bus_dmamap_sync(apc->tx_buf_tag, tx_info->dma_map, 328 BUS_DMASYNC_POSTWRITE); 329 bus_dmamap_unload(apc->tx_buf_tag, tx_info->dma_map); 330 if (tx_info->mbuf) { 331 m_freem(tx_info->mbuf); 332 tx_info->mbuf = NULL; 333 } 334 } 335 336 static inline int 337 mana_load_rx_mbuf(struct mana_port_context *apc, struct mana_rxq *rxq, 338 struct mana_recv_buf_oob *rx_oob, bool alloc_mbuf) 339 { 340 bus_dma_segment_t segs[1]; 341 struct mbuf *mbuf; 342 int nsegs, err; 343 uint32_t mlen; 344 345 if (alloc_mbuf) { 346 mbuf = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, rxq->datasize); 347 if (unlikely(mbuf == NULL)) { 348 mbuf = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 349 if (unlikely(mbuf == NULL)) { 350 return ENOMEM; 351 } 352 mlen = MCLBYTES; 353 } else { 354 mlen = rxq->datasize; 355 } 356 357 mbuf->m_pkthdr.len = mbuf->m_len = mlen; 358 } else { 359 if (rx_oob->mbuf) { 360 mbuf = rx_oob->mbuf; 361 mlen = rx_oob->mbuf->m_pkthdr.len; 362 } else { 363 return ENOMEM; 364 } 365 } 366 367 err = bus_dmamap_load_mbuf_sg(apc->rx_buf_tag, rx_oob->dma_map, 368 mbuf, segs, &nsegs, BUS_DMA_NOWAIT); 369 370 if (unlikely((err != 0) || (nsegs != 1))) { 371 mana_warn(NULL, "Failed to map mbuf, error: %d, " 372 "nsegs: %d\n", err, nsegs); 373 counter_u64_add(rxq->stats.dma_mapping_err, 1); 374 goto error; 375 } 376 377 bus_dmamap_sync(apc->rx_buf_tag, rx_oob->dma_map, 378 BUS_DMASYNC_PREREAD); 379 380 rx_oob->mbuf = mbuf; 381 rx_oob->num_sge = 1; 382 rx_oob->sgl[0].address = segs[0].ds_addr; 383 rx_oob->sgl[0].size = mlen; 384 rx_oob->sgl[0].mem_key = apc->ac->gdma_dev->gpa_mkey; 385 386 return 0; 387 388 error: 389 m_freem(mbuf); 390 return EFAULT; 391 } 392 393 static inline void 394 mana_unload_rx_mbuf(struct mana_port_context *apc, struct mana_rxq *rxq, 395 struct mana_recv_buf_oob *rx_oob, bool free_mbuf) 396 { 397 bus_dmamap_sync(apc->rx_buf_tag, rx_oob->dma_map, 398 BUS_DMASYNC_POSTREAD); 399 bus_dmamap_unload(apc->rx_buf_tag, rx_oob->dma_map); 400 401 if (free_mbuf && rx_oob->mbuf) { 402 m_freem(rx_oob->mbuf); 403 rx_oob->mbuf = NULL; 404 } 405 } 406 407 408 /* Use couple mbuf PH_loc spaces for l3 and l4 protocal type */ 409 #define MANA_L3_PROTO(_mbuf) ((_mbuf)->m_pkthdr.PH_loc.sixteen[0]) 410 #define MANA_L4_PROTO(_mbuf) ((_mbuf)->m_pkthdr.PH_loc.sixteen[1]) 411 412 #define MANA_TXQ_FULL (IFF_DRV_RUNNING | IFF_DRV_OACTIVE) 413 414 static void 415 mana_xmit(struct mana_txq *txq) 416 { 417 enum mana_tx_pkt_format pkt_fmt = MANA_SHORT_PKT_FMT; 418 struct mana_send_buf_info *tx_info; 419 if_t ndev = txq->ndev; 420 struct mbuf *mbuf; 421 struct mana_port_context *apc = if_getsoftc(ndev); 422 struct mana_port_stats *port_stats = &apc->port_stats; 423 struct gdma_dev *gd = apc->ac->gdma_dev; 424 uint64_t packets, bytes; 425 uint16_t next_to_use; 426 struct mana_tx_package pkg = {}; 427 struct mana_stats *tx_stats; 428 struct gdma_queue *gdma_sq; 429 struct mana_cq *cq; 430 int err, len; 431 432 gdma_sq = txq->gdma_sq; 433 cq = &apc->tx_qp[txq->idx].tx_cq; 434 tx_stats = &txq->stats; 435 436 packets = 0; 437 bytes = 0; 438 next_to_use = txq->next_to_use; 439 440 while ((mbuf = drbr_peek(ndev, txq->txq_br)) != NULL) { 441 if (!apc->port_is_up || 442 (if_getdrvflags(ndev) & MANA_TXQ_FULL) != IFF_DRV_RUNNING) { 443 drbr_putback(ndev, txq->txq_br, mbuf); 444 break; 445 } 446 447 if (!mana_can_tx(gdma_sq)) { 448 /* SQ is full. Set the IFF_DRV_OACTIVE flag */ 449 if_setdrvflagbits(apc->ndev, IFF_DRV_OACTIVE, 0); 450 counter_u64_add(tx_stats->stop, 1); 451 uint64_t stops = counter_u64_fetch(tx_stats->stop); 452 uint64_t wakeups = counter_u64_fetch(tx_stats->wakeup); 453 #define MANA_TXQ_STOP_THRESHOLD 50 454 if (stops > MANA_TXQ_STOP_THRESHOLD && wakeups > 0 && 455 stops > wakeups && txq->alt_txq_idx == txq->idx) { 456 txq->alt_txq_idx = 457 (txq->idx + (stops / wakeups)) 458 % apc->num_queues; 459 counter_u64_add(tx_stats->alt_chg, 1); 460 } 461 462 drbr_putback(ndev, txq->txq_br, mbuf); 463 464 taskqueue_enqueue(cq->cleanup_tq, &cq->cleanup_task); 465 break; 466 } 467 468 tx_info = &txq->tx_buf_info[next_to_use]; 469 470 memset(&pkg, 0, sizeof(struct mana_tx_package)); 471 pkg.wqe_req.sgl = pkg.sgl_array; 472 473 err = mana_tx_map_mbuf(apc, tx_info, &mbuf, &pkg, tx_stats); 474 if (unlikely(err)) { 475 mana_dbg(NULL, 476 "Failed to map tx mbuf, err %d\n", err); 477 478 counter_u64_add(tx_stats->dma_mapping_err, 1); 479 480 /* The mbuf is still there. Free it */ 481 m_freem(mbuf); 482 /* Advance the drbr queue */ 483 drbr_advance(ndev, txq->txq_br); 484 continue; 485 } 486 487 pkg.tx_oob.s_oob.vcq_num = cq->gdma_id; 488 pkg.tx_oob.s_oob.vsq_frame = txq->vsq_frame; 489 490 if (txq->vp_offset > MANA_SHORT_VPORT_OFFSET_MAX) { 491 pkg.tx_oob.l_oob.long_vp_offset = txq->vp_offset; 492 pkt_fmt = MANA_LONG_PKT_FMT; 493 } else { 494 pkg.tx_oob.s_oob.short_vp_offset = txq->vp_offset; 495 } 496 497 pkg.tx_oob.s_oob.pkt_fmt = pkt_fmt; 498 499 if (pkt_fmt == MANA_SHORT_PKT_FMT) 500 pkg.wqe_req.inline_oob_size = sizeof(struct mana_tx_short_oob); 501 else 502 pkg.wqe_req.inline_oob_size = sizeof(struct mana_tx_oob); 503 504 pkg.wqe_req.inline_oob_data = &pkg.tx_oob; 505 pkg.wqe_req.flags = 0; 506 pkg.wqe_req.client_data_unit = 0; 507 508 if (mbuf->m_pkthdr.csum_flags & CSUM_TSO) { 509 if (MANA_L3_PROTO(mbuf) == ETHERTYPE_IP) 510 pkg.tx_oob.s_oob.is_outer_ipv4 = 1; 511 else 512 pkg.tx_oob.s_oob.is_outer_ipv6 = 1; 513 514 pkg.tx_oob.s_oob.comp_iphdr_csum = 1; 515 pkg.tx_oob.s_oob.comp_tcp_csum = 1; 516 pkg.tx_oob.s_oob.trans_off = mbuf->m_pkthdr.l3hlen; 517 518 pkg.wqe_req.client_data_unit = mbuf->m_pkthdr.tso_segsz; 519 pkg.wqe_req.flags = GDMA_WR_OOB_IN_SGL | GDMA_WR_PAD_BY_SGE0; 520 } else if (mbuf->m_pkthdr.csum_flags & 521 (CSUM_IP_UDP | CSUM_IP_TCP | CSUM_IP6_UDP | CSUM_IP6_TCP)) { 522 if (MANA_L3_PROTO(mbuf) == ETHERTYPE_IP) { 523 pkg.tx_oob.s_oob.is_outer_ipv4 = 1; 524 pkg.tx_oob.s_oob.comp_iphdr_csum = 1; 525 } else { 526 pkg.tx_oob.s_oob.is_outer_ipv6 = 1; 527 } 528 529 if (MANA_L4_PROTO(mbuf) == IPPROTO_TCP) { 530 pkg.tx_oob.s_oob.comp_tcp_csum = 1; 531 pkg.tx_oob.s_oob.trans_off = 532 mbuf->m_pkthdr.l3hlen; 533 } else { 534 pkg.tx_oob.s_oob.comp_udp_csum = 1; 535 } 536 } else if (mbuf->m_pkthdr.csum_flags & CSUM_IP) { 537 pkg.tx_oob.s_oob.is_outer_ipv4 = 1; 538 pkg.tx_oob.s_oob.comp_iphdr_csum = 1; 539 } else { 540 if (MANA_L3_PROTO(mbuf) == ETHERTYPE_IP) 541 pkg.tx_oob.s_oob.is_outer_ipv4 = 1; 542 else if (MANA_L3_PROTO(mbuf) == ETHERTYPE_IPV6) 543 pkg.tx_oob.s_oob.is_outer_ipv6 = 1; 544 } 545 546 len = mbuf->m_pkthdr.len; 547 548 err = mana_gd_post_work_request(gdma_sq, &pkg.wqe_req, 549 (struct gdma_posted_wqe_info *)&tx_info->wqe_inf); 550 if (unlikely(err)) { 551 /* Should not happen */ 552 if_printf(ndev, "Failed to post TX OOB: %d\n", err); 553 554 mana_tx_unmap_mbuf(apc, tx_info); 555 556 drbr_advance(ndev, txq->txq_br); 557 continue; 558 } 559 560 next_to_use = 561 (next_to_use + 1) % MAX_SEND_BUFFERS_PER_QUEUE; 562 563 (void)atomic_inc_return(&txq->pending_sends); 564 565 drbr_advance(ndev, txq->txq_br); 566 567 mana_gd_wq_ring_doorbell(gd->gdma_context, gdma_sq); 568 569 packets++; 570 bytes += len; 571 } 572 573 counter_enter(); 574 counter_u64_add_protected(tx_stats->packets, packets); 575 counter_u64_add_protected(port_stats->tx_packets, packets); 576 counter_u64_add_protected(tx_stats->bytes, bytes); 577 counter_u64_add_protected(port_stats->tx_bytes, bytes); 578 counter_exit(); 579 580 txq->next_to_use = next_to_use; 581 } 582 583 static void 584 mana_xmit_taskfunc(void *arg, int pending) 585 { 586 struct mana_txq *txq = (struct mana_txq *)arg; 587 if_t ndev = txq->ndev; 588 struct mana_port_context *apc = if_getsoftc(ndev); 589 590 while (!drbr_empty(ndev, txq->txq_br) && apc->port_is_up && 591 (if_getdrvflags(ndev) & MANA_TXQ_FULL) == IFF_DRV_RUNNING) { 592 mtx_lock(&txq->txq_mtx); 593 mana_xmit(txq); 594 mtx_unlock(&txq->txq_mtx); 595 } 596 } 597 598 #define PULLUP_HDR(m, len) \ 599 do { \ 600 if (unlikely((m)->m_len < (len))) { \ 601 (m) = m_pullup((m), (len)); \ 602 if ((m) == NULL) \ 603 return (NULL); \ 604 } \ 605 } while (0) 606 607 /* 608 * If this function failed, the mbuf would be freed. 609 */ 610 static inline struct mbuf * 611 mana_tso_fixup(struct mbuf *mbuf) 612 { 613 struct ether_vlan_header *eh = mtod(mbuf, struct ether_vlan_header *); 614 struct tcphdr *th; 615 uint16_t etype; 616 int ehlen; 617 618 if (eh->evl_encap_proto == ntohs(ETHERTYPE_VLAN)) { 619 etype = ntohs(eh->evl_proto); 620 ehlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; 621 } else { 622 etype = ntohs(eh->evl_encap_proto); 623 ehlen = ETHER_HDR_LEN; 624 } 625 626 if (etype == ETHERTYPE_IP) { 627 struct ip *ip; 628 int iphlen; 629 630 PULLUP_HDR(mbuf, ehlen + sizeof(*ip)); 631 ip = mtodo(mbuf, ehlen); 632 iphlen = ip->ip_hl << 2; 633 mbuf->m_pkthdr.l3hlen = ehlen + iphlen; 634 635 PULLUP_HDR(mbuf, ehlen + iphlen + sizeof(*th)); 636 th = mtodo(mbuf, ehlen + iphlen); 637 638 ip->ip_len = 0; 639 ip->ip_sum = 0; 640 th->th_sum = in_pseudo(ip->ip_src.s_addr, 641 ip->ip_dst.s_addr, htons(IPPROTO_TCP)); 642 } else if (etype == ETHERTYPE_IPV6) { 643 struct ip6_hdr *ip6; 644 645 PULLUP_HDR(mbuf, ehlen + sizeof(*ip6) + sizeof(*th)); 646 ip6 = mtodo(mbuf, ehlen); 647 if (ip6->ip6_nxt != IPPROTO_TCP) { 648 /* Realy something wrong, just return */ 649 mana_dbg(NULL, "TSO mbuf not TCP, freed.\n"); 650 m_freem(mbuf); 651 return NULL; 652 } 653 mbuf->m_pkthdr.l3hlen = ehlen + sizeof(*ip6); 654 655 th = mtodo(mbuf, ehlen + sizeof(*ip6)); 656 657 ip6->ip6_plen = 0; 658 th->th_sum = in6_cksum_pseudo(ip6, 0, IPPROTO_TCP, 0); 659 } else { 660 /* CSUM_TSO is set but not IP protocol. */ 661 mana_warn(NULL, "TSO mbuf not right, freed.\n"); 662 m_freem(mbuf); 663 return NULL; 664 } 665 666 MANA_L3_PROTO(mbuf) = etype; 667 668 return (mbuf); 669 } 670 671 /* 672 * If this function failed, the mbuf would be freed. 673 */ 674 static inline struct mbuf * 675 mana_mbuf_csum_check(struct mbuf *mbuf) 676 { 677 struct ether_vlan_header *eh = mtod(mbuf, struct ether_vlan_header *); 678 struct mbuf *mbuf_next; 679 uint16_t etype; 680 int offset; 681 int ehlen; 682 683 if (eh->evl_encap_proto == ntohs(ETHERTYPE_VLAN)) { 684 etype = ntohs(eh->evl_proto); 685 ehlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; 686 } else { 687 etype = ntohs(eh->evl_encap_proto); 688 ehlen = ETHER_HDR_LEN; 689 } 690 691 mbuf_next = m_getptr(mbuf, ehlen, &offset); 692 693 MANA_L4_PROTO(mbuf) = 0; 694 if (etype == ETHERTYPE_IP) { 695 const struct ip *ip; 696 int iphlen; 697 698 ip = (struct ip *)(mtodo(mbuf_next, offset)); 699 iphlen = ip->ip_hl << 2; 700 mbuf->m_pkthdr.l3hlen = ehlen + iphlen; 701 702 MANA_L4_PROTO(mbuf) = ip->ip_p; 703 } else if (etype == ETHERTYPE_IPV6) { 704 const struct ip6_hdr *ip6; 705 706 ip6 = (struct ip6_hdr *)(mtodo(mbuf_next, offset)); 707 mbuf->m_pkthdr.l3hlen = ehlen + sizeof(*ip6); 708 709 MANA_L4_PROTO(mbuf) = ip6->ip6_nxt; 710 } else { 711 MANA_L4_PROTO(mbuf) = 0; 712 } 713 714 MANA_L3_PROTO(mbuf) = etype; 715 716 return (mbuf); 717 } 718 719 static int 720 mana_start_xmit(if_t ifp, struct mbuf *m) 721 { 722 struct mana_port_context *apc = if_getsoftc(ifp); 723 struct mana_txq *txq; 724 int is_drbr_empty; 725 uint16_t txq_id; 726 int err; 727 728 if (unlikely((!apc->port_is_up) || 729 (if_getdrvflags(ifp) & IFF_DRV_RUNNING) == 0)) 730 return ENODEV; 731 732 if (m->m_pkthdr.csum_flags & CSUM_TSO) { 733 m = mana_tso_fixup(m); 734 if (unlikely(m == NULL)) { 735 counter_enter(); 736 counter_u64_add_protected(apc->port_stats.tx_drops, 1); 737 counter_exit(); 738 return EIO; 739 } 740 } else { 741 m = mana_mbuf_csum_check(m); 742 if (unlikely(m == NULL)) { 743 counter_enter(); 744 counter_u64_add_protected(apc->port_stats.tx_drops, 1); 745 counter_exit(); 746 return EIO; 747 } 748 } 749 750 if (M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) { 751 uint32_t hash = m->m_pkthdr.flowid; 752 txq_id = apc->indir_table[(hash) & MANA_INDIRECT_TABLE_MASK] % 753 apc->num_queues; 754 } else { 755 txq_id = m->m_pkthdr.flowid % apc->num_queues; 756 } 757 758 if (apc->enable_tx_altq) 759 txq_id = apc->tx_qp[txq_id].txq.alt_txq_idx; 760 761 txq = &apc->tx_qp[txq_id].txq; 762 763 is_drbr_empty = drbr_empty(ifp, txq->txq_br); 764 err = drbr_enqueue(ifp, txq->txq_br, m); 765 if (unlikely(err)) { 766 mana_warn(NULL, "txq %u failed to enqueue: %d\n", 767 txq_id, err); 768 taskqueue_enqueue(txq->enqueue_tq, &txq->enqueue_task); 769 return err; 770 } 771 772 if (is_drbr_empty && mtx_trylock(&txq->txq_mtx)) { 773 mana_xmit(txq); 774 mtx_unlock(&txq->txq_mtx); 775 } else { 776 taskqueue_enqueue(txq->enqueue_tq, &txq->enqueue_task); 777 } 778 779 return 0; 780 } 781 782 static void 783 mana_cleanup_port_context(struct mana_port_context *apc) 784 { 785 bus_dma_tag_destroy(apc->tx_buf_tag); 786 bus_dma_tag_destroy(apc->rx_buf_tag); 787 apc->rx_buf_tag = NULL; 788 789 free(apc->rxqs, M_DEVBUF); 790 apc->rxqs = NULL; 791 792 mana_free_counters((counter_u64_t *)&apc->port_stats, 793 sizeof(struct mana_port_stats)); 794 } 795 796 static int 797 mana_init_port_context(struct mana_port_context *apc) 798 { 799 device_t dev = apc->ac->gdma_dev->gdma_context->dev; 800 uint32_t tso_maxsize; 801 int err; 802 803 tso_maxsize = MAX_MBUF_FRAGS * MANA_TSO_MAXSEG_SZ - 804 (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN); 805 806 /* Create DMA tag for tx bufs */ 807 err = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */ 808 1, 0, /* alignment, boundary */ 809 BUS_SPACE_MAXADDR, /* lowaddr */ 810 BUS_SPACE_MAXADDR, /* highaddr */ 811 NULL, NULL, /* filter, filterarg */ 812 tso_maxsize, /* maxsize */ 813 MAX_MBUF_FRAGS, /* nsegments */ 814 tso_maxsize, /* maxsegsize */ 815 0, /* flags */ 816 NULL, NULL, /* lockfunc, lockfuncarg*/ 817 &apc->tx_buf_tag); 818 if (unlikely(err)) { 819 device_printf(dev, "Feiled to create TX DMA tag\n"); 820 return err; 821 } 822 823 /* Create DMA tag for rx bufs */ 824 err = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */ 825 64, 0, /* alignment, boundary */ 826 BUS_SPACE_MAXADDR, /* lowaddr */ 827 BUS_SPACE_MAXADDR, /* highaddr */ 828 NULL, NULL, /* filter, filterarg */ 829 MJUMPAGESIZE, /* maxsize */ 830 1, /* nsegments */ 831 MJUMPAGESIZE, /* maxsegsize */ 832 0, /* flags */ 833 NULL, NULL, /* lockfunc, lockfuncarg*/ 834 &apc->rx_buf_tag); 835 if (unlikely(err)) { 836 device_printf(dev, "Feiled to create RX DMA tag\n"); 837 return err; 838 } 839 840 apc->rxqs = mallocarray(apc->num_queues, sizeof(struct mana_rxq *), 841 M_DEVBUF, M_WAITOK | M_ZERO); 842 843 if (!apc->rxqs) { 844 bus_dma_tag_destroy(apc->tx_buf_tag); 845 bus_dma_tag_destroy(apc->rx_buf_tag); 846 apc->rx_buf_tag = NULL; 847 return ENOMEM; 848 } 849 850 return 0; 851 } 852 853 static int 854 mana_send_request(struct mana_context *ac, void *in_buf, 855 uint32_t in_len, void *out_buf, uint32_t out_len) 856 { 857 struct gdma_context *gc = ac->gdma_dev->gdma_context; 858 struct gdma_resp_hdr *resp = out_buf; 859 struct gdma_req_hdr *req = in_buf; 860 device_t dev = gc->dev; 861 static atomic_t activity_id; 862 int err; 863 864 req->dev_id = gc->mana.dev_id; 865 req->activity_id = atomic_inc_return(&activity_id); 866 867 mana_dbg(NULL, "activity_id = %u\n", activity_id); 868 869 err = mana_gd_send_request(gc, in_len, in_buf, out_len, 870 out_buf); 871 if (err || resp->status) { 872 device_printf(dev, "Failed to send mana message: %d, 0x%x\n", 873 err, resp->status); 874 return err ? err : EPROTO; 875 } 876 877 if (req->dev_id.as_uint32 != resp->dev_id.as_uint32 || 878 req->activity_id != resp->activity_id) { 879 device_printf(dev, 880 "Unexpected mana message response: %x,%x,%x,%x\n", 881 req->dev_id.as_uint32, resp->dev_id.as_uint32, 882 req->activity_id, resp->activity_id); 883 return EPROTO; 884 } 885 886 return 0; 887 } 888 889 static int 890 mana_verify_resp_hdr(const struct gdma_resp_hdr *resp_hdr, 891 const enum mana_command_code expected_code, 892 const uint32_t min_size) 893 { 894 if (resp_hdr->response.msg_type != expected_code) 895 return EPROTO; 896 897 if (resp_hdr->response.msg_version < GDMA_MESSAGE_V1) 898 return EPROTO; 899 900 if (resp_hdr->response.msg_size < min_size) 901 return EPROTO; 902 903 return 0; 904 } 905 906 static int 907 mana_query_device_cfg(struct mana_context *ac, uint32_t proto_major_ver, 908 uint32_t proto_minor_ver, uint32_t proto_micro_ver, 909 uint16_t *max_num_vports) 910 { 911 struct gdma_context *gc = ac->gdma_dev->gdma_context; 912 struct mana_query_device_cfg_resp resp = {}; 913 struct mana_query_device_cfg_req req = {}; 914 device_t dev = gc->dev; 915 int err = 0; 916 917 mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_DEV_CONFIG, 918 sizeof(req), sizeof(resp)); 919 req.proto_major_ver = proto_major_ver; 920 req.proto_minor_ver = proto_minor_ver; 921 req.proto_micro_ver = proto_micro_ver; 922 923 err = mana_send_request(ac, &req, sizeof(req), &resp, sizeof(resp)); 924 if (err) { 925 device_printf(dev, "Failed to query config: %d", err); 926 return err; 927 } 928 929 err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_DEV_CONFIG, 930 sizeof(resp)); 931 if (err || resp.hdr.status) { 932 device_printf(dev, "Invalid query result: %d, 0x%x\n", err, 933 resp.hdr.status); 934 if (!err) 935 err = EPROTO; 936 return err; 937 } 938 939 *max_num_vports = resp.max_num_vports; 940 941 mana_dbg(NULL, "mana max_num_vports from device = %d\n", 942 *max_num_vports); 943 944 return 0; 945 } 946 947 static int 948 mana_query_vport_cfg(struct mana_port_context *apc, uint32_t vport_index, 949 uint32_t *max_sq, uint32_t *max_rq, uint32_t *num_indir_entry) 950 { 951 struct mana_query_vport_cfg_resp resp = {}; 952 struct mana_query_vport_cfg_req req = {}; 953 int err; 954 955 mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_VPORT_CONFIG, 956 sizeof(req), sizeof(resp)); 957 958 req.vport_index = vport_index; 959 960 err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 961 sizeof(resp)); 962 if (err) 963 return err; 964 965 err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_VPORT_CONFIG, 966 sizeof(resp)); 967 if (err) 968 return err; 969 970 if (resp.hdr.status) 971 return EPROTO; 972 973 *max_sq = resp.max_num_sq; 974 *max_rq = resp.max_num_rq; 975 *num_indir_entry = resp.num_indirection_ent; 976 977 apc->port_handle = resp.vport; 978 memcpy(apc->mac_addr, resp.mac_addr, ETHER_ADDR_LEN); 979 980 return 0; 981 } 982 983 void 984 mana_uncfg_vport(struct mana_port_context *apc) 985 { 986 apc->vport_use_count--; 987 if (apc->vport_use_count < 0) { 988 mana_err(NULL, 989 "WARNING: vport_use_count less than 0: %u\n", 990 apc->vport_use_count); 991 } 992 } 993 994 int 995 mana_cfg_vport(struct mana_port_context *apc, uint32_t protection_dom_id, 996 uint32_t doorbell_pg_id) 997 { 998 struct mana_config_vport_resp resp = {}; 999 struct mana_config_vport_req req = {}; 1000 int err; 1001 1002 /* This function is used to program the Ethernet port in the hardware 1003 * table. It can be called from the Ethernet driver or the RDMA driver. 1004 * 1005 * For Ethernet usage, the hardware supports only one active user on a 1006 * physical port. The driver checks on the port usage before programming 1007 * the hardware when creating the RAW QP (RDMA driver) or exposing the 1008 * device to kernel NET layer (Ethernet driver). 1009 * 1010 * Because the RDMA driver doesn't know in advance which QP type the 1011 * user will create, it exposes the device with all its ports. The user 1012 * may not be able to create RAW QP on a port if this port is already 1013 * in used by the Ethernet driver from the kernel. 1014 * 1015 * This physical port limitation only applies to the RAW QP. For RC QP, 1016 * the hardware doesn't have this limitation. The user can create RC 1017 * QPs on a physical port up to the hardware limits independent of the 1018 * Ethernet usage on the same port. 1019 */ 1020 if (apc->vport_use_count > 0) { 1021 return EBUSY; 1022 } 1023 apc->vport_use_count++; 1024 1025 mana_gd_init_req_hdr(&req.hdr, MANA_CONFIG_VPORT_TX, 1026 sizeof(req), sizeof(resp)); 1027 req.vport = apc->port_handle; 1028 req.pdid = protection_dom_id; 1029 req.doorbell_pageid = doorbell_pg_id; 1030 1031 err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 1032 sizeof(resp)); 1033 if (err) { 1034 if_printf(apc->ndev, "Failed to configure vPort: %d\n", err); 1035 goto out; 1036 } 1037 1038 err = mana_verify_resp_hdr(&resp.hdr, MANA_CONFIG_VPORT_TX, 1039 sizeof(resp)); 1040 if (err || resp.hdr.status) { 1041 if_printf(apc->ndev, "Failed to configure vPort: %d, 0x%x\n", 1042 err, resp.hdr.status); 1043 if (!err) 1044 err = EPROTO; 1045 1046 goto out; 1047 } 1048 1049 apc->tx_shortform_allowed = resp.short_form_allowed; 1050 apc->tx_vp_offset = resp.tx_vport_offset; 1051 1052 if_printf(apc->ndev, "Configured vPort %ju PD %u DB %u\n", 1053 apc->port_handle, protection_dom_id, doorbell_pg_id); 1054 1055 out: 1056 if (err) 1057 mana_uncfg_vport(apc); 1058 1059 return err; 1060 } 1061 1062 static int 1063 mana_cfg_vport_steering(struct mana_port_context *apc, 1064 enum TRI_STATE rx, 1065 bool update_default_rxobj, bool update_key, 1066 bool update_tab) 1067 { 1068 uint16_t num_entries = MANA_INDIRECT_TABLE_SIZE; 1069 struct mana_cfg_rx_steer_req *req = NULL; 1070 struct mana_cfg_rx_steer_resp resp = {}; 1071 if_t ndev = apc->ndev; 1072 mana_handle_t *req_indir_tab; 1073 uint32_t req_buf_size; 1074 int err; 1075 1076 req_buf_size = sizeof(*req) + sizeof(mana_handle_t) * num_entries; 1077 req = malloc(req_buf_size, M_DEVBUF, M_WAITOK | M_ZERO); 1078 if (!req) 1079 return ENOMEM; 1080 1081 mana_gd_init_req_hdr(&req->hdr, MANA_CONFIG_VPORT_RX, req_buf_size, 1082 sizeof(resp)); 1083 1084 req->vport = apc->port_handle; 1085 req->num_indir_entries = num_entries; 1086 req->indir_tab_offset = sizeof(*req); 1087 req->rx_enable = rx; 1088 req->rss_enable = apc->rss_state; 1089 req->update_default_rxobj = update_default_rxobj; 1090 req->update_hashkey = update_key; 1091 req->update_indir_tab = update_tab; 1092 req->default_rxobj = apc->default_rxobj; 1093 1094 if (update_key) 1095 memcpy(&req->hashkey, apc->hashkey, MANA_HASH_KEY_SIZE); 1096 1097 if (update_tab) { 1098 req_indir_tab = (mana_handle_t *)(req + 1); 1099 memcpy(req_indir_tab, apc->rxobj_table, 1100 req->num_indir_entries * sizeof(mana_handle_t)); 1101 } 1102 1103 err = mana_send_request(apc->ac, req, req_buf_size, &resp, 1104 sizeof(resp)); 1105 if (err) { 1106 if_printf(ndev, "Failed to configure vPort RX: %d\n", err); 1107 goto out; 1108 } 1109 1110 err = mana_verify_resp_hdr(&resp.hdr, MANA_CONFIG_VPORT_RX, 1111 sizeof(resp)); 1112 if (err) { 1113 if_printf(ndev, "vPort RX configuration failed: %d\n", err); 1114 goto out; 1115 } 1116 1117 if (resp.hdr.status) { 1118 if_printf(ndev, "vPort RX configuration failed: 0x%x\n", 1119 resp.hdr.status); 1120 err = EPROTO; 1121 } 1122 1123 if_printf(ndev, "Configured steering vPort %ju entries %u\n", 1124 apc->port_handle, num_entries); 1125 1126 out: 1127 free(req, M_DEVBUF); 1128 return err; 1129 } 1130 1131 int 1132 mana_create_wq_obj(struct mana_port_context *apc, 1133 mana_handle_t vport, 1134 uint32_t wq_type, struct mana_obj_spec *wq_spec, 1135 struct mana_obj_spec *cq_spec, 1136 mana_handle_t *wq_obj) 1137 { 1138 struct mana_create_wqobj_resp resp = {}; 1139 struct mana_create_wqobj_req req = {}; 1140 if_t ndev = apc->ndev; 1141 int err; 1142 1143 mana_gd_init_req_hdr(&req.hdr, MANA_CREATE_WQ_OBJ, 1144 sizeof(req), sizeof(resp)); 1145 req.vport = vport; 1146 req.wq_type = wq_type; 1147 req.wq_gdma_region = wq_spec->gdma_region; 1148 req.cq_gdma_region = cq_spec->gdma_region; 1149 req.wq_size = wq_spec->queue_size; 1150 req.cq_size = cq_spec->queue_size; 1151 req.cq_moderation_ctx_id = cq_spec->modr_ctx_id; 1152 req.cq_parent_qid = cq_spec->attached_eq; 1153 1154 err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 1155 sizeof(resp)); 1156 if (err) { 1157 if_printf(ndev, "Failed to create WQ object: %d\n", err); 1158 goto out; 1159 } 1160 1161 err = mana_verify_resp_hdr(&resp.hdr, MANA_CREATE_WQ_OBJ, 1162 sizeof(resp)); 1163 if (err || resp.hdr.status) { 1164 if_printf(ndev, "Failed to create WQ object: %d, 0x%x\n", err, 1165 resp.hdr.status); 1166 if (!err) 1167 err = EPROTO; 1168 goto out; 1169 } 1170 1171 if (resp.wq_obj == INVALID_MANA_HANDLE) { 1172 if_printf(ndev, "Got an invalid WQ object handle\n"); 1173 err = EPROTO; 1174 goto out; 1175 } 1176 1177 *wq_obj = resp.wq_obj; 1178 wq_spec->queue_index = resp.wq_id; 1179 cq_spec->queue_index = resp.cq_id; 1180 1181 return 0; 1182 out: 1183 return err; 1184 } 1185 1186 void 1187 mana_destroy_wq_obj(struct mana_port_context *apc, uint32_t wq_type, 1188 mana_handle_t wq_obj) 1189 { 1190 struct mana_destroy_wqobj_resp resp = {}; 1191 struct mana_destroy_wqobj_req req = {}; 1192 if_t ndev = apc->ndev; 1193 int err; 1194 1195 mana_gd_init_req_hdr(&req.hdr, MANA_DESTROY_WQ_OBJ, 1196 sizeof(req), sizeof(resp)); 1197 req.wq_type = wq_type; 1198 req.wq_obj_handle = wq_obj; 1199 1200 err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 1201 sizeof(resp)); 1202 if (err) { 1203 if_printf(ndev, "Failed to destroy WQ object: %d\n", err); 1204 return; 1205 } 1206 1207 err = mana_verify_resp_hdr(&resp.hdr, MANA_DESTROY_WQ_OBJ, 1208 sizeof(resp)); 1209 if (err || resp.hdr.status) 1210 if_printf(ndev, "Failed to destroy WQ object: %d, 0x%x\n", 1211 err, resp.hdr.status); 1212 } 1213 1214 static void 1215 mana_destroy_eq(struct mana_context *ac) 1216 { 1217 struct gdma_context *gc = ac->gdma_dev->gdma_context; 1218 struct gdma_queue *eq; 1219 int i; 1220 1221 if (!ac->eqs) 1222 return; 1223 1224 for (i = 0; i < gc->max_num_queues; i++) { 1225 eq = ac->eqs[i].eq; 1226 if (!eq) 1227 continue; 1228 1229 mana_gd_destroy_queue(gc, eq); 1230 } 1231 1232 free(ac->eqs, M_DEVBUF); 1233 ac->eqs = NULL; 1234 } 1235 1236 static int 1237 mana_create_eq(struct mana_context *ac) 1238 { 1239 struct gdma_dev *gd = ac->gdma_dev; 1240 struct gdma_context *gc = gd->gdma_context; 1241 struct gdma_queue_spec spec = {}; 1242 int err; 1243 int i; 1244 1245 ac->eqs = mallocarray(gc->max_num_queues, sizeof(struct mana_eq), 1246 M_DEVBUF, M_WAITOK | M_ZERO); 1247 if (!ac->eqs) 1248 return ENOMEM; 1249 1250 spec.type = GDMA_EQ; 1251 spec.monitor_avl_buf = false; 1252 spec.queue_size = EQ_SIZE; 1253 spec.eq.callback = NULL; 1254 spec.eq.context = ac->eqs; 1255 spec.eq.log2_throttle_limit = LOG2_EQ_THROTTLE; 1256 1257 for (i = 0; i < gc->max_num_queues; i++) { 1258 err = mana_gd_create_mana_eq(gd, &spec, &ac->eqs[i].eq); 1259 if (err) 1260 goto out; 1261 } 1262 1263 return 0; 1264 out: 1265 mana_destroy_eq(ac); 1266 return err; 1267 } 1268 1269 static int 1270 mana_fence_rq(struct mana_port_context *apc, struct mana_rxq *rxq) 1271 { 1272 struct mana_fence_rq_resp resp = {}; 1273 struct mana_fence_rq_req req = {}; 1274 int err; 1275 1276 init_completion(&rxq->fence_event); 1277 1278 mana_gd_init_req_hdr(&req.hdr, MANA_FENCE_RQ, 1279 sizeof(req), sizeof(resp)); 1280 req.wq_obj_handle = rxq->rxobj; 1281 1282 err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 1283 sizeof(resp)); 1284 if (err) { 1285 if_printf(apc->ndev, "Failed to fence RQ %u: %d\n", 1286 rxq->rxq_idx, err); 1287 return err; 1288 } 1289 1290 err = mana_verify_resp_hdr(&resp.hdr, MANA_FENCE_RQ, sizeof(resp)); 1291 if (err || resp.hdr.status) { 1292 if_printf(apc->ndev, "Failed to fence RQ %u: %d, 0x%x\n", 1293 rxq->rxq_idx, err, resp.hdr.status); 1294 if (!err) 1295 err = EPROTO; 1296 1297 return err; 1298 } 1299 1300 if (wait_for_completion_timeout(&rxq->fence_event, 10 * hz)) { 1301 if_printf(apc->ndev, "Failed to fence RQ %u: timed out\n", 1302 rxq->rxq_idx); 1303 return ETIMEDOUT; 1304 } 1305 1306 return 0; 1307 } 1308 1309 static void 1310 mana_fence_rqs(struct mana_port_context *apc) 1311 { 1312 unsigned int rxq_idx; 1313 struct mana_rxq *rxq; 1314 int err; 1315 1316 for (rxq_idx = 0; rxq_idx < apc->num_queues; rxq_idx++) { 1317 rxq = apc->rxqs[rxq_idx]; 1318 err = mana_fence_rq(apc, rxq); 1319 1320 /* In case of any error, use sleep instead. */ 1321 if (err) 1322 gdma_msleep(100); 1323 } 1324 } 1325 1326 static int 1327 mana_move_wq_tail(struct gdma_queue *wq, uint32_t num_units) 1328 { 1329 uint32_t used_space_old; 1330 uint32_t used_space_new; 1331 1332 used_space_old = wq->head - wq->tail; 1333 used_space_new = wq->head - (wq->tail + num_units); 1334 1335 if (used_space_new > used_space_old) { 1336 mana_err(NULL, 1337 "WARNING: new used space %u greater than old one %u\n", 1338 used_space_new, used_space_old); 1339 return ERANGE; 1340 } 1341 1342 wq->tail += num_units; 1343 return 0; 1344 } 1345 1346 static void 1347 mana_poll_tx_cq(struct mana_cq *cq) 1348 { 1349 struct gdma_comp *completions = cq->gdma_comp_buf; 1350 struct gdma_posted_wqe_info *wqe_info; 1351 struct mana_send_buf_info *tx_info; 1352 unsigned int pkt_transmitted = 0; 1353 unsigned int wqe_unit_cnt = 0; 1354 struct mana_txq *txq = cq->txq; 1355 struct mana_port_context *apc; 1356 uint16_t next_to_complete; 1357 if_t ndev; 1358 int comp_read; 1359 int txq_idx = txq->idx;; 1360 int i; 1361 int sa_drop = 0; 1362 1363 struct gdma_queue *gdma_wq; 1364 unsigned int avail_space; 1365 bool txq_full = false; 1366 1367 ndev = txq->ndev; 1368 apc = if_getsoftc(ndev); 1369 1370 comp_read = mana_gd_poll_cq(cq->gdma_cq, completions, 1371 CQE_POLLING_BUFFER); 1372 1373 if (comp_read < 1) 1374 return; 1375 1376 next_to_complete = txq->next_to_complete; 1377 1378 for (i = 0; i < comp_read; i++) { 1379 struct mana_tx_comp_oob *cqe_oob; 1380 1381 if (!completions[i].is_sq) { 1382 mana_err(NULL, "WARNING: Not for SQ\n"); 1383 return; 1384 } 1385 1386 cqe_oob = (struct mana_tx_comp_oob *)completions[i].cqe_data; 1387 if (cqe_oob->cqe_hdr.client_type != 1388 MANA_CQE_COMPLETION) { 1389 mana_err(NULL, 1390 "WARNING: Invalid CQE client type %u\n", 1391 cqe_oob->cqe_hdr.client_type); 1392 return; 1393 } 1394 1395 switch (cqe_oob->cqe_hdr.cqe_type) { 1396 case CQE_TX_OKAY: 1397 break; 1398 1399 case CQE_TX_SA_DROP: 1400 case CQE_TX_MTU_DROP: 1401 case CQE_TX_INVALID_OOB: 1402 case CQE_TX_INVALID_ETH_TYPE: 1403 case CQE_TX_HDR_PROCESSING_ERROR: 1404 case CQE_TX_VF_DISABLED: 1405 case CQE_TX_VPORT_IDX_OUT_OF_RANGE: 1406 case CQE_TX_VPORT_DISABLED: 1407 case CQE_TX_VLAN_TAGGING_VIOLATION: 1408 sa_drop ++; 1409 mana_err(NULL, 1410 "TX: txq %d CQE error %d, ntc = %d, " 1411 "pending sends = %d: err ignored.\n", 1412 txq_idx, cqe_oob->cqe_hdr.cqe_type, 1413 next_to_complete, txq->pending_sends); 1414 break; 1415 1416 default: 1417 /* If the CQE type is unexpected, log an error, 1418 * and go through the error path. 1419 */ 1420 mana_err(NULL, 1421 "ERROR: TX: Unexpected CQE type %d: HW BUG?\n", 1422 cqe_oob->cqe_hdr.cqe_type); 1423 return; 1424 } 1425 if (txq->gdma_txq_id != completions[i].wq_num) { 1426 mana_dbg(NULL, 1427 "txq gdma id not match completion wq num: " 1428 "%d != %d\n", 1429 txq->gdma_txq_id, completions[i].wq_num); 1430 break; 1431 } 1432 1433 tx_info = &txq->tx_buf_info[next_to_complete]; 1434 if (!tx_info->mbuf) { 1435 mana_err(NULL, 1436 "WARNING: txq %d Empty mbuf on tx_info: %u, " 1437 "ntu = %u, pending_sends = %d, " 1438 "transmitted = %d, sa_drop = %d, i = %d, comp_read = %d\n", 1439 txq_idx, next_to_complete, txq->next_to_use, 1440 txq->pending_sends, pkt_transmitted, sa_drop, 1441 i, comp_read); 1442 break; 1443 } 1444 1445 wqe_info = &tx_info->wqe_inf; 1446 wqe_unit_cnt += wqe_info->wqe_size_in_bu; 1447 1448 mana_tx_unmap_mbuf(apc, tx_info); 1449 mb(); 1450 1451 next_to_complete = 1452 (next_to_complete + 1) % MAX_SEND_BUFFERS_PER_QUEUE; 1453 1454 pkt_transmitted++; 1455 } 1456 1457 txq->next_to_complete = next_to_complete; 1458 1459 if (wqe_unit_cnt == 0) { 1460 mana_err(NULL, 1461 "WARNING: TX ring not proceeding!\n"); 1462 return; 1463 } 1464 1465 mana_move_wq_tail(txq->gdma_sq, wqe_unit_cnt); 1466 1467 /* Ensure tail updated before checking q stop */ 1468 wmb(); 1469 1470 gdma_wq = txq->gdma_sq; 1471 avail_space = mana_gd_wq_avail_space(gdma_wq); 1472 1473 1474 if ((if_getdrvflags(ndev) & MANA_TXQ_FULL) == MANA_TXQ_FULL) { 1475 txq_full = true; 1476 } 1477 1478 /* Ensure checking txq_full before apc->port_is_up. */ 1479 rmb(); 1480 1481 if (txq_full && apc->port_is_up && avail_space >= MAX_TX_WQE_SIZE) { 1482 /* Grab the txq lock and re-test */ 1483 mtx_lock(&txq->txq_mtx); 1484 avail_space = mana_gd_wq_avail_space(gdma_wq); 1485 1486 if ((if_getdrvflags(ndev) & MANA_TXQ_FULL) == MANA_TXQ_FULL && 1487 apc->port_is_up && avail_space >= MAX_TX_WQE_SIZE) { 1488 /* Clear the Q full flag */ 1489 if_setdrvflagbits(apc->ndev, IFF_DRV_RUNNING, 1490 IFF_DRV_OACTIVE); 1491 counter_u64_add(txq->stats.wakeup, 1); 1492 if (txq->alt_txq_idx != txq->idx) { 1493 uint64_t stops = counter_u64_fetch(txq->stats.stop); 1494 uint64_t wakeups = counter_u64_fetch(txq->stats.wakeup); 1495 /* Reset alt_txq_idx back if it is not overloaded */ 1496 if (stops < wakeups) { 1497 txq->alt_txq_idx = txq->idx; 1498 counter_u64_add(txq->stats.alt_reset, 1); 1499 } 1500 } 1501 rmb(); 1502 /* Schedule a tx enqueue task */ 1503 taskqueue_enqueue(txq->enqueue_tq, &txq->enqueue_task); 1504 } 1505 mtx_unlock(&txq->txq_mtx); 1506 } 1507 1508 if (atomic_sub_return(pkt_transmitted, &txq->pending_sends) < 0) 1509 mana_err(NULL, 1510 "WARNING: TX %d pending_sends error: %d\n", 1511 txq->idx, txq->pending_sends); 1512 1513 cq->work_done = pkt_transmitted; 1514 } 1515 1516 static void 1517 mana_post_pkt_rxq(struct mana_rxq *rxq) 1518 { 1519 struct mana_recv_buf_oob *recv_buf_oob; 1520 uint32_t curr_index; 1521 int err; 1522 1523 curr_index = rxq->buf_index++; 1524 if (rxq->buf_index == rxq->num_rx_buf) 1525 rxq->buf_index = 0; 1526 1527 recv_buf_oob = &rxq->rx_oobs[curr_index]; 1528 1529 err = mana_gd_post_and_ring(rxq->gdma_rq, &recv_buf_oob->wqe_req, 1530 &recv_buf_oob->wqe_inf); 1531 if (err) { 1532 mana_err(NULL, "WARNING: rxq %u post pkt err %d\n", 1533 rxq->rxq_idx, err); 1534 return; 1535 } 1536 1537 if (recv_buf_oob->wqe_inf.wqe_size_in_bu != 1) { 1538 mana_err(NULL, "WARNING: rxq %u wqe_size_in_bu %u\n", 1539 rxq->rxq_idx, recv_buf_oob->wqe_inf.wqe_size_in_bu); 1540 } 1541 } 1542 1543 static void 1544 mana_rx_mbuf(struct mbuf *mbuf, struct mana_rxcomp_oob *cqe, 1545 struct mana_rxq *rxq) 1546 { 1547 struct mana_stats *rx_stats = &rxq->stats; 1548 if_t ndev = rxq->ndev; 1549 uint32_t pkt_len = cqe->ppi[0].pkt_len; 1550 uint16_t rxq_idx = rxq->rxq_idx; 1551 struct mana_port_context *apc; 1552 bool do_lro = false; 1553 bool do_if_input; 1554 1555 apc = if_getsoftc(ndev); 1556 rxq->rx_cq.work_done++; 1557 1558 if (!mbuf) { 1559 return; 1560 } 1561 1562 mbuf->m_flags |= M_PKTHDR; 1563 mbuf->m_pkthdr.len = pkt_len; 1564 mbuf->m_len = pkt_len; 1565 mbuf->m_pkthdr.rcvif = ndev; 1566 1567 if ((if_getcapenable(ndev) & IFCAP_RXCSUM || 1568 if_getcapenable(ndev) & IFCAP_RXCSUM_IPV6) && 1569 (cqe->rx_iphdr_csum_succeed)) { 1570 mbuf->m_pkthdr.csum_flags = CSUM_IP_CHECKED; 1571 mbuf->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1572 if (cqe->rx_tcp_csum_succeed || cqe->rx_udp_csum_succeed) { 1573 mbuf->m_pkthdr.csum_flags |= 1574 (CSUM_DATA_VALID | CSUM_PSEUDO_HDR); 1575 mbuf->m_pkthdr.csum_data = 0xffff; 1576 1577 if (cqe->rx_tcp_csum_succeed) 1578 do_lro = true; 1579 } 1580 } 1581 1582 if (cqe->rx_hashtype != 0) { 1583 mbuf->m_pkthdr.flowid = cqe->ppi[0].pkt_hash; 1584 1585 uint16_t hashtype = cqe->rx_hashtype; 1586 if (hashtype & NDIS_HASH_IPV4_MASK) { 1587 hashtype &= NDIS_HASH_IPV4_MASK; 1588 switch (hashtype) { 1589 case NDIS_HASH_TCP_IPV4: 1590 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV4); 1591 break; 1592 case NDIS_HASH_UDP_IPV4: 1593 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV4); 1594 break; 1595 default: 1596 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV4); 1597 } 1598 } else if (hashtype & NDIS_HASH_IPV6_MASK) { 1599 hashtype &= NDIS_HASH_IPV6_MASK; 1600 switch (hashtype) { 1601 case NDIS_HASH_TCP_IPV6: 1602 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV6); 1603 break; 1604 case NDIS_HASH_TCP_IPV6_EX: 1605 M_HASHTYPE_SET(mbuf, 1606 M_HASHTYPE_RSS_TCP_IPV6_EX); 1607 break; 1608 case NDIS_HASH_UDP_IPV6: 1609 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV6); 1610 break; 1611 case NDIS_HASH_UDP_IPV6_EX: 1612 M_HASHTYPE_SET(mbuf, 1613 M_HASHTYPE_RSS_UDP_IPV6_EX); 1614 break; 1615 default: 1616 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV6); 1617 } 1618 } else { 1619 M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH); 1620 } 1621 } else { 1622 mbuf->m_pkthdr.flowid = rxq_idx; 1623 M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE); 1624 } 1625 1626 do_if_input = true; 1627 if ((if_getcapenable(ndev) & IFCAP_LRO) && do_lro) { 1628 if (rxq->lro.lro_cnt != 0 && 1629 tcp_lro_rx(&rxq->lro, mbuf, 0) == 0) 1630 do_if_input = false; 1631 } 1632 if (do_if_input) { 1633 if_input(ndev, mbuf); 1634 } 1635 1636 counter_enter(); 1637 counter_u64_add_protected(rx_stats->packets, 1); 1638 counter_u64_add_protected(apc->port_stats.rx_packets, 1); 1639 counter_u64_add_protected(rx_stats->bytes, pkt_len); 1640 counter_u64_add_protected(apc->port_stats.rx_bytes, pkt_len); 1641 counter_exit(); 1642 } 1643 1644 static void 1645 mana_process_rx_cqe(struct mana_rxq *rxq, struct mana_cq *cq, 1646 struct gdma_comp *cqe) 1647 { 1648 struct mana_rxcomp_oob *oob = (struct mana_rxcomp_oob *)cqe->cqe_data; 1649 struct mana_recv_buf_oob *rxbuf_oob; 1650 if_t ndev = rxq->ndev; 1651 struct mana_port_context *apc; 1652 struct mbuf *old_mbuf; 1653 uint32_t curr, pktlen; 1654 int err; 1655 1656 switch (oob->cqe_hdr.cqe_type) { 1657 case CQE_RX_OKAY: 1658 break; 1659 1660 case CQE_RX_TRUNCATED: 1661 apc = if_getsoftc(ndev); 1662 counter_u64_add(apc->port_stats.rx_drops, 1); 1663 rxbuf_oob = &rxq->rx_oobs[rxq->buf_index]; 1664 if_printf(ndev, "Dropped a truncated packet\n"); 1665 goto drop; 1666 1667 case CQE_RX_COALESCED_4: 1668 if_printf(ndev, "RX coalescing is unsupported\n"); 1669 return; 1670 1671 case CQE_RX_OBJECT_FENCE: 1672 complete(&rxq->fence_event); 1673 return; 1674 1675 default: 1676 if_printf(ndev, "Unknown RX CQE type = %d\n", 1677 oob->cqe_hdr.cqe_type); 1678 return; 1679 } 1680 1681 if (oob->cqe_hdr.cqe_type != CQE_RX_OKAY) 1682 return; 1683 1684 pktlen = oob->ppi[0].pkt_len; 1685 1686 if (pktlen == 0) { 1687 /* data packets should never have packetlength of zero */ 1688 if_printf(ndev, "RX pkt len=0, rq=%u, cq=%u, rxobj=0x%jx\n", 1689 rxq->gdma_id, cq->gdma_id, rxq->rxobj); 1690 return; 1691 } 1692 1693 curr = rxq->buf_index; 1694 rxbuf_oob = &rxq->rx_oobs[curr]; 1695 if (rxbuf_oob->wqe_inf.wqe_size_in_bu != 1) { 1696 mana_err(NULL, "WARNING: Rx Incorrect complete " 1697 "WQE size %u\n", 1698 rxbuf_oob->wqe_inf.wqe_size_in_bu); 1699 } 1700 1701 apc = if_getsoftc(ndev); 1702 1703 old_mbuf = rxbuf_oob->mbuf; 1704 1705 /* Unload DMA map for the old mbuf */ 1706 mana_unload_rx_mbuf(apc, rxq, rxbuf_oob, false); 1707 1708 /* Load a new mbuf to replace the old one */ 1709 err = mana_load_rx_mbuf(apc, rxq, rxbuf_oob, true); 1710 if (err) { 1711 mana_dbg(NULL, 1712 "failed to load rx mbuf, err = %d, packet dropped.\n", 1713 err); 1714 counter_u64_add(rxq->stats.mbuf_alloc_fail, 1); 1715 /* 1716 * Failed to load new mbuf, rxbuf_oob->mbuf is still 1717 * pointing to the old one. Drop the packet. 1718 */ 1719 old_mbuf = NULL; 1720 /* Reload the existing mbuf */ 1721 mana_load_rx_mbuf(apc, rxq, rxbuf_oob, false); 1722 } 1723 1724 mana_rx_mbuf(old_mbuf, oob, rxq); 1725 1726 drop: 1727 mana_move_wq_tail(rxq->gdma_rq, rxbuf_oob->wqe_inf.wqe_size_in_bu); 1728 1729 mana_post_pkt_rxq(rxq); 1730 } 1731 1732 static void 1733 mana_poll_rx_cq(struct mana_cq *cq) 1734 { 1735 struct gdma_comp *comp = cq->gdma_comp_buf; 1736 int comp_read, i; 1737 1738 comp_read = mana_gd_poll_cq(cq->gdma_cq, comp, CQE_POLLING_BUFFER); 1739 KASSERT(comp_read <= CQE_POLLING_BUFFER, 1740 ("comp_read %d great than buf size %d", 1741 comp_read, CQE_POLLING_BUFFER)); 1742 1743 for (i = 0; i < comp_read; i++) { 1744 if (comp[i].is_sq == true) { 1745 mana_err(NULL, 1746 "WARNING: CQE not for receive queue\n"); 1747 return; 1748 } 1749 1750 /* verify recv cqe references the right rxq */ 1751 if (comp[i].wq_num != cq->rxq->gdma_id) { 1752 mana_err(NULL, 1753 "WARNING: Received CQE %d not for " 1754 "this receive queue %d\n", 1755 comp[i].wq_num, cq->rxq->gdma_id); 1756 return; 1757 } 1758 1759 mana_process_rx_cqe(cq->rxq, cq, &comp[i]); 1760 } 1761 1762 tcp_lro_flush_all(&cq->rxq->lro); 1763 } 1764 1765 static void 1766 mana_cq_handler(void *context, struct gdma_queue *gdma_queue) 1767 { 1768 struct mana_cq *cq = context; 1769 uint8_t arm_bit; 1770 1771 KASSERT(cq->gdma_cq == gdma_queue, 1772 ("cq do not match %p, %p", cq->gdma_cq, gdma_queue)); 1773 1774 if (cq->type == MANA_CQ_TYPE_RX) { 1775 mana_poll_rx_cq(cq); 1776 } else { 1777 mana_poll_tx_cq(cq); 1778 } 1779 1780 if (cq->work_done < cq->budget && cq->do_not_ring_db == false) 1781 arm_bit = SET_ARM_BIT; 1782 else 1783 arm_bit = 0; 1784 1785 mana_gd_ring_cq(gdma_queue, arm_bit); 1786 } 1787 1788 #define MANA_POLL_BUDGET 8 1789 #define MANA_RX_BUDGET 256 1790 #define MANA_TX_BUDGET MAX_SEND_BUFFERS_PER_QUEUE 1791 1792 static void 1793 mana_poll(void *arg, int pending) 1794 { 1795 struct mana_cq *cq = arg; 1796 int i; 1797 1798 cq->work_done = 0; 1799 if (cq->type == MANA_CQ_TYPE_RX) { 1800 cq->budget = MANA_RX_BUDGET; 1801 } else { 1802 cq->budget = MANA_TX_BUDGET; 1803 } 1804 1805 for (i = 0; i < MANA_POLL_BUDGET; i++) { 1806 /* 1807 * If this is the last loop, set the budget big enough 1808 * so it will arm the CQ any way. 1809 */ 1810 if (i == (MANA_POLL_BUDGET - 1)) 1811 cq->budget = CQE_POLLING_BUFFER + 1; 1812 1813 mana_cq_handler(cq, cq->gdma_cq); 1814 1815 if (cq->work_done < cq->budget) 1816 break; 1817 1818 cq->work_done = 0; 1819 } 1820 } 1821 1822 static void 1823 mana_schedule_task(void *arg, struct gdma_queue *gdma_queue) 1824 { 1825 struct mana_cq *cq = arg; 1826 1827 taskqueue_enqueue(cq->cleanup_tq, &cq->cleanup_task); 1828 } 1829 1830 static void 1831 mana_deinit_cq(struct mana_port_context *apc, struct mana_cq *cq) 1832 { 1833 struct gdma_dev *gd = apc->ac->gdma_dev; 1834 1835 if (!cq->gdma_cq) 1836 return; 1837 1838 /* Drain cleanup taskqueue */ 1839 if (cq->cleanup_tq) { 1840 while (taskqueue_cancel(cq->cleanup_tq, 1841 &cq->cleanup_task, NULL)) { 1842 taskqueue_drain(cq->cleanup_tq, 1843 &cq->cleanup_task); 1844 } 1845 1846 taskqueue_free(cq->cleanup_tq); 1847 } 1848 1849 mana_gd_destroy_queue(gd->gdma_context, cq->gdma_cq); 1850 } 1851 1852 static void 1853 mana_deinit_txq(struct mana_port_context *apc, struct mana_txq *txq) 1854 { 1855 struct gdma_dev *gd = apc->ac->gdma_dev; 1856 struct mana_send_buf_info *txbuf_info; 1857 uint32_t pending_sends; 1858 int i; 1859 1860 if (!txq->gdma_sq) 1861 return; 1862 1863 if ((pending_sends = atomic_read(&txq->pending_sends)) > 0) { 1864 mana_err(NULL, 1865 "WARNING: txq pending sends not zero: %u\n", 1866 pending_sends); 1867 } 1868 1869 if (txq->next_to_use != txq->next_to_complete) { 1870 mana_err(NULL, 1871 "WARNING: txq buf not completed, " 1872 "next use %u, next complete %u\n", 1873 txq->next_to_use, txq->next_to_complete); 1874 } 1875 1876 /* Flush buf ring. Grab txq mtx lock */ 1877 if (txq->txq_br) { 1878 mtx_lock(&txq->txq_mtx); 1879 drbr_flush(apc->ndev, txq->txq_br); 1880 mtx_unlock(&txq->txq_mtx); 1881 buf_ring_free(txq->txq_br, M_DEVBUF); 1882 } 1883 1884 /* Drain taskqueue */ 1885 if (txq->enqueue_tq) { 1886 while (taskqueue_cancel(txq->enqueue_tq, 1887 &txq->enqueue_task, NULL)) { 1888 taskqueue_drain(txq->enqueue_tq, 1889 &txq->enqueue_task); 1890 } 1891 1892 taskqueue_free(txq->enqueue_tq); 1893 } 1894 1895 if (txq->tx_buf_info) { 1896 /* Free all mbufs which are still in-flight */ 1897 for (i = 0; i < MAX_SEND_BUFFERS_PER_QUEUE; i++) { 1898 txbuf_info = &txq->tx_buf_info[i]; 1899 if (txbuf_info->mbuf) { 1900 mana_tx_unmap_mbuf(apc, txbuf_info); 1901 } 1902 } 1903 1904 free(txq->tx_buf_info, M_DEVBUF); 1905 } 1906 1907 mana_free_counters((counter_u64_t *)&txq->stats, 1908 sizeof(txq->stats)); 1909 1910 mana_gd_destroy_queue(gd->gdma_context, txq->gdma_sq); 1911 1912 mtx_destroy(&txq->txq_mtx); 1913 } 1914 1915 static void 1916 mana_destroy_txq(struct mana_port_context *apc) 1917 { 1918 int i; 1919 1920 if (!apc->tx_qp) 1921 return; 1922 1923 for (i = 0; i < apc->num_queues; i++) { 1924 mana_destroy_wq_obj(apc, GDMA_SQ, apc->tx_qp[i].tx_object); 1925 1926 mana_deinit_cq(apc, &apc->tx_qp[i].tx_cq); 1927 1928 mana_deinit_txq(apc, &apc->tx_qp[i].txq); 1929 } 1930 1931 free(apc->tx_qp, M_DEVBUF); 1932 apc->tx_qp = NULL; 1933 } 1934 1935 static int 1936 mana_create_txq(struct mana_port_context *apc, if_t net) 1937 { 1938 struct mana_context *ac = apc->ac; 1939 struct gdma_dev *gd = ac->gdma_dev; 1940 struct mana_obj_spec wq_spec; 1941 struct mana_obj_spec cq_spec; 1942 struct gdma_queue_spec spec; 1943 struct gdma_context *gc; 1944 struct mana_txq *txq; 1945 struct mana_cq *cq; 1946 uint32_t txq_size; 1947 uint32_t cq_size; 1948 int err; 1949 int i; 1950 1951 apc->tx_qp = mallocarray(apc->num_queues, sizeof(struct mana_tx_qp), 1952 M_DEVBUF, M_WAITOK | M_ZERO); 1953 if (!apc->tx_qp) 1954 return ENOMEM; 1955 1956 /* The minimum size of the WQE is 32 bytes, hence 1957 * MAX_SEND_BUFFERS_PER_QUEUE represents the maximum number of WQEs 1958 * the SQ can store. This value is then used to size other queues 1959 * to prevent overflow. 1960 */ 1961 txq_size = MAX_SEND_BUFFERS_PER_QUEUE * 32; 1962 KASSERT(IS_ALIGNED(txq_size, PAGE_SIZE), 1963 ("txq size not page aligned")); 1964 1965 cq_size = MAX_SEND_BUFFERS_PER_QUEUE * COMP_ENTRY_SIZE; 1966 cq_size = ALIGN(cq_size, PAGE_SIZE); 1967 1968 gc = gd->gdma_context; 1969 1970 for (i = 0; i < apc->num_queues; i++) { 1971 apc->tx_qp[i].tx_object = INVALID_MANA_HANDLE; 1972 1973 /* Create SQ */ 1974 txq = &apc->tx_qp[i].txq; 1975 1976 txq->ndev = net; 1977 txq->vp_offset = apc->tx_vp_offset; 1978 txq->idx = i; 1979 txq->alt_txq_idx = i; 1980 1981 memset(&spec, 0, sizeof(spec)); 1982 spec.type = GDMA_SQ; 1983 spec.monitor_avl_buf = true; 1984 spec.queue_size = txq_size; 1985 err = mana_gd_create_mana_wq_cq(gd, &spec, &txq->gdma_sq); 1986 if (err) 1987 goto out; 1988 1989 /* Create SQ's CQ */ 1990 cq = &apc->tx_qp[i].tx_cq; 1991 cq->type = MANA_CQ_TYPE_TX; 1992 1993 cq->txq = txq; 1994 1995 memset(&spec, 0, sizeof(spec)); 1996 spec.type = GDMA_CQ; 1997 spec.monitor_avl_buf = false; 1998 spec.queue_size = cq_size; 1999 spec.cq.callback = mana_schedule_task; 2000 spec.cq.parent_eq = ac->eqs[i].eq; 2001 spec.cq.context = cq; 2002 err = mana_gd_create_mana_wq_cq(gd, &spec, &cq->gdma_cq); 2003 if (err) 2004 goto out; 2005 2006 memset(&wq_spec, 0, sizeof(wq_spec)); 2007 memset(&cq_spec, 0, sizeof(cq_spec)); 2008 2009 wq_spec.gdma_region = txq->gdma_sq->mem_info.dma_region_handle; 2010 wq_spec.queue_size = txq->gdma_sq->queue_size; 2011 2012 cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle; 2013 cq_spec.queue_size = cq->gdma_cq->queue_size; 2014 cq_spec.modr_ctx_id = 0; 2015 cq_spec.attached_eq = cq->gdma_cq->cq.parent->id; 2016 2017 err = mana_create_wq_obj(apc, apc->port_handle, GDMA_SQ, 2018 &wq_spec, &cq_spec, &apc->tx_qp[i].tx_object); 2019 2020 if (err) 2021 goto out; 2022 2023 txq->gdma_sq->id = wq_spec.queue_index; 2024 cq->gdma_cq->id = cq_spec.queue_index; 2025 2026 txq->gdma_sq->mem_info.dma_region_handle = 2027 GDMA_INVALID_DMA_REGION; 2028 cq->gdma_cq->mem_info.dma_region_handle = 2029 GDMA_INVALID_DMA_REGION; 2030 2031 txq->gdma_txq_id = txq->gdma_sq->id; 2032 2033 cq->gdma_id = cq->gdma_cq->id; 2034 2035 mana_dbg(NULL, 2036 "txq %d, txq gdma id %d, txq cq gdma id %d\n", 2037 i, txq->gdma_txq_id, cq->gdma_id);; 2038 2039 if (cq->gdma_id >= gc->max_num_cqs) { 2040 if_printf(net, "CQ id %u too large.\n", cq->gdma_id); 2041 err = EINVAL; 2042 goto out; 2043 } 2044 2045 gc->cq_table[cq->gdma_id] = cq->gdma_cq; 2046 2047 /* Initialize tx specific data */ 2048 txq->tx_buf_info = malloc(MAX_SEND_BUFFERS_PER_QUEUE * 2049 sizeof(struct mana_send_buf_info), 2050 M_DEVBUF, M_WAITOK | M_ZERO); 2051 if (unlikely(txq->tx_buf_info == NULL)) { 2052 if_printf(net, 2053 "Failed to allocate tx buf info for SQ %u\n", 2054 txq->gdma_sq->id); 2055 err = ENOMEM; 2056 goto out; 2057 } 2058 2059 2060 snprintf(txq->txq_mtx_name, nitems(txq->txq_mtx_name), 2061 "mana:tx(%d)", i); 2062 mtx_init(&txq->txq_mtx, txq->txq_mtx_name, NULL, MTX_DEF); 2063 2064 txq->txq_br = buf_ring_alloc(4 * MAX_SEND_BUFFERS_PER_QUEUE, 2065 M_DEVBUF, M_WAITOK, &txq->txq_mtx); 2066 if (unlikely(txq->txq_br == NULL)) { 2067 if_printf(net, 2068 "Failed to allocate buf ring for SQ %u\n", 2069 txq->gdma_sq->id); 2070 err = ENOMEM; 2071 goto out; 2072 } 2073 2074 /* Allocate taskqueue for deferred send */ 2075 TASK_INIT(&txq->enqueue_task, 0, mana_xmit_taskfunc, txq); 2076 txq->enqueue_tq = taskqueue_create_fast("mana_tx_enque", 2077 M_NOWAIT, taskqueue_thread_enqueue, &txq->enqueue_tq); 2078 if (unlikely(txq->enqueue_tq == NULL)) { 2079 if_printf(net, 2080 "Unable to create tx %d enqueue task queue\n", i); 2081 err = ENOMEM; 2082 goto out; 2083 } 2084 taskqueue_start_threads(&txq->enqueue_tq, 1, PI_NET, 2085 "mana txq p%u-tx%d", apc->port_idx, i); 2086 2087 mana_alloc_counters((counter_u64_t *)&txq->stats, 2088 sizeof(txq->stats)); 2089 2090 /* Allocate and start the cleanup task on CQ */ 2091 cq->do_not_ring_db = false; 2092 2093 NET_TASK_INIT(&cq->cleanup_task, 0, mana_poll, cq); 2094 cq->cleanup_tq = 2095 taskqueue_create_fast("mana tx cq cleanup", 2096 M_WAITOK, taskqueue_thread_enqueue, 2097 &cq->cleanup_tq); 2098 2099 if (apc->last_tx_cq_bind_cpu < 0) 2100 apc->last_tx_cq_bind_cpu = CPU_FIRST(); 2101 cq->cpu = apc->last_tx_cq_bind_cpu; 2102 apc->last_tx_cq_bind_cpu = CPU_NEXT(apc->last_tx_cq_bind_cpu); 2103 2104 if (apc->bind_cleanup_thread_cpu) { 2105 cpuset_t cpu_mask; 2106 CPU_SETOF(cq->cpu, &cpu_mask); 2107 taskqueue_start_threads_cpuset(&cq->cleanup_tq, 2108 1, PI_NET, &cpu_mask, 2109 "mana cq p%u-tx%u-cpu%d", 2110 apc->port_idx, txq->idx, cq->cpu); 2111 } else { 2112 taskqueue_start_threads(&cq->cleanup_tq, 1, 2113 PI_NET, "mana cq p%u-tx%u", 2114 apc->port_idx, txq->idx); 2115 } 2116 2117 mana_gd_ring_cq(cq->gdma_cq, SET_ARM_BIT); 2118 } 2119 2120 return 0; 2121 out: 2122 mana_destroy_txq(apc); 2123 return err; 2124 } 2125 2126 static void 2127 mana_destroy_rxq(struct mana_port_context *apc, struct mana_rxq *rxq, 2128 bool validate_state) 2129 { 2130 struct gdma_context *gc = apc->ac->gdma_dev->gdma_context; 2131 struct mana_recv_buf_oob *rx_oob; 2132 int i; 2133 2134 if (!rxq) 2135 return; 2136 2137 if (validate_state) { 2138 /* 2139 * XXX Cancel and drain cleanup task queue here. 2140 */ 2141 ; 2142 } 2143 2144 mana_destroy_wq_obj(apc, GDMA_RQ, rxq->rxobj); 2145 2146 mana_deinit_cq(apc, &rxq->rx_cq); 2147 2148 mana_free_counters((counter_u64_t *)&rxq->stats, 2149 sizeof(rxq->stats)); 2150 2151 /* Free LRO resources */ 2152 tcp_lro_free(&rxq->lro); 2153 2154 for (i = 0; i < rxq->num_rx_buf; i++) { 2155 rx_oob = &rxq->rx_oobs[i]; 2156 2157 if (rx_oob->mbuf) 2158 mana_unload_rx_mbuf(apc, rxq, rx_oob, true); 2159 2160 bus_dmamap_destroy(apc->rx_buf_tag, rx_oob->dma_map); 2161 } 2162 2163 if (rxq->gdma_rq) 2164 mana_gd_destroy_queue(gc, rxq->gdma_rq); 2165 2166 free(rxq, M_DEVBUF); 2167 } 2168 2169 #define MANA_WQE_HEADER_SIZE 16 2170 #define MANA_WQE_SGE_SIZE 16 2171 2172 static int 2173 mana_alloc_rx_wqe(struct mana_port_context *apc, 2174 struct mana_rxq *rxq, uint32_t *rxq_size, uint32_t *cq_size) 2175 { 2176 struct mana_recv_buf_oob *rx_oob; 2177 uint32_t buf_idx; 2178 int err; 2179 2180 if (rxq->datasize == 0 || rxq->datasize > PAGE_SIZE) { 2181 mana_err(NULL, 2182 "WARNING: Invalid rxq datasize %u\n", rxq->datasize); 2183 } 2184 2185 *rxq_size = 0; 2186 *cq_size = 0; 2187 2188 for (buf_idx = 0; buf_idx < rxq->num_rx_buf; buf_idx++) { 2189 rx_oob = &rxq->rx_oobs[buf_idx]; 2190 memset(rx_oob, 0, sizeof(*rx_oob)); 2191 2192 err = bus_dmamap_create(apc->rx_buf_tag, 0, 2193 &rx_oob->dma_map); 2194 if (err) { 2195 mana_err(NULL, 2196 "Failed to create rx DMA map for buf %d\n", 2197 buf_idx); 2198 return err; 2199 } 2200 2201 err = mana_load_rx_mbuf(apc, rxq, rx_oob, true); 2202 if (err) { 2203 mana_err(NULL, 2204 "Failed to create rx DMA map for buf %d\n", 2205 buf_idx); 2206 bus_dmamap_destroy(apc->rx_buf_tag, rx_oob->dma_map); 2207 return err; 2208 } 2209 2210 rx_oob->wqe_req.sgl = rx_oob->sgl; 2211 rx_oob->wqe_req.num_sge = rx_oob->num_sge; 2212 rx_oob->wqe_req.inline_oob_size = 0; 2213 rx_oob->wqe_req.inline_oob_data = NULL; 2214 rx_oob->wqe_req.flags = 0; 2215 rx_oob->wqe_req.client_data_unit = 0; 2216 2217 *rxq_size += ALIGN(MANA_WQE_HEADER_SIZE + 2218 MANA_WQE_SGE_SIZE * rx_oob->num_sge, 32); 2219 *cq_size += COMP_ENTRY_SIZE; 2220 } 2221 2222 return 0; 2223 } 2224 2225 static int 2226 mana_push_wqe(struct mana_rxq *rxq) 2227 { 2228 struct mana_recv_buf_oob *rx_oob; 2229 uint32_t buf_idx; 2230 int err; 2231 2232 for (buf_idx = 0; buf_idx < rxq->num_rx_buf; buf_idx++) { 2233 rx_oob = &rxq->rx_oobs[buf_idx]; 2234 2235 err = mana_gd_post_and_ring(rxq->gdma_rq, &rx_oob->wqe_req, 2236 &rx_oob->wqe_inf); 2237 if (err) 2238 return ENOSPC; 2239 } 2240 2241 return 0; 2242 } 2243 2244 static struct mana_rxq * 2245 mana_create_rxq(struct mana_port_context *apc, uint32_t rxq_idx, 2246 struct mana_eq *eq, if_t ndev) 2247 { 2248 struct gdma_dev *gd = apc->ac->gdma_dev; 2249 struct mana_obj_spec wq_spec; 2250 struct mana_obj_spec cq_spec; 2251 struct gdma_queue_spec spec; 2252 struct mana_cq *cq = NULL; 2253 uint32_t cq_size, rq_size; 2254 struct gdma_context *gc; 2255 struct mana_rxq *rxq; 2256 int err; 2257 2258 gc = gd->gdma_context; 2259 2260 rxq = malloc(sizeof(*rxq) + 2261 RX_BUFFERS_PER_QUEUE * sizeof(struct mana_recv_buf_oob), 2262 M_DEVBUF, M_WAITOK | M_ZERO); 2263 if (!rxq) 2264 return NULL; 2265 2266 rxq->ndev = ndev; 2267 rxq->num_rx_buf = RX_BUFFERS_PER_QUEUE; 2268 rxq->rxq_idx = rxq_idx; 2269 /* 2270 * Minimum size is MCLBYTES(2048) bytes for a mbuf cluster. 2271 * Now we just allow maximum size of 4096. 2272 */ 2273 rxq->datasize = ALIGN(apc->frame_size, MCLBYTES); 2274 if (rxq->datasize > MAX_FRAME_SIZE) 2275 rxq->datasize = MAX_FRAME_SIZE; 2276 2277 mana_dbg(NULL, "Setting rxq %d datasize %d\n", 2278 rxq_idx, rxq->datasize); 2279 2280 rxq->rxobj = INVALID_MANA_HANDLE; 2281 2282 err = mana_alloc_rx_wqe(apc, rxq, &rq_size, &cq_size); 2283 if (err) 2284 goto out; 2285 2286 /* Create LRO for the RQ */ 2287 if (if_getcapenable(ndev) & IFCAP_LRO) { 2288 err = tcp_lro_init(&rxq->lro); 2289 if (err) { 2290 if_printf(ndev, "Failed to create LRO for rxq %d\n", 2291 rxq_idx); 2292 } else { 2293 rxq->lro.ifp = ndev; 2294 } 2295 } 2296 2297 mana_alloc_counters((counter_u64_t *)&rxq->stats, 2298 sizeof(rxq->stats)); 2299 2300 rq_size = ALIGN(rq_size, PAGE_SIZE); 2301 cq_size = ALIGN(cq_size, PAGE_SIZE); 2302 2303 /* Create RQ */ 2304 memset(&spec, 0, sizeof(spec)); 2305 spec.type = GDMA_RQ; 2306 spec.monitor_avl_buf = true; 2307 spec.queue_size = rq_size; 2308 err = mana_gd_create_mana_wq_cq(gd, &spec, &rxq->gdma_rq); 2309 if (err) 2310 goto out; 2311 2312 /* Create RQ's CQ */ 2313 cq = &rxq->rx_cq; 2314 cq->type = MANA_CQ_TYPE_RX; 2315 cq->rxq = rxq; 2316 2317 memset(&spec, 0, sizeof(spec)); 2318 spec.type = GDMA_CQ; 2319 spec.monitor_avl_buf = false; 2320 spec.queue_size = cq_size; 2321 spec.cq.callback = mana_schedule_task; 2322 spec.cq.parent_eq = eq->eq; 2323 spec.cq.context = cq; 2324 err = mana_gd_create_mana_wq_cq(gd, &spec, &cq->gdma_cq); 2325 if (err) 2326 goto out; 2327 2328 memset(&wq_spec, 0, sizeof(wq_spec)); 2329 memset(&cq_spec, 0, sizeof(cq_spec)); 2330 wq_spec.gdma_region = rxq->gdma_rq->mem_info.dma_region_handle; 2331 wq_spec.queue_size = rxq->gdma_rq->queue_size; 2332 2333 cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle; 2334 cq_spec.queue_size = cq->gdma_cq->queue_size; 2335 cq_spec.modr_ctx_id = 0; 2336 cq_spec.attached_eq = cq->gdma_cq->cq.parent->id; 2337 2338 err = mana_create_wq_obj(apc, apc->port_handle, GDMA_RQ, 2339 &wq_spec, &cq_spec, &rxq->rxobj); 2340 if (err) 2341 goto out; 2342 2343 rxq->gdma_rq->id = wq_spec.queue_index; 2344 cq->gdma_cq->id = cq_spec.queue_index; 2345 2346 rxq->gdma_rq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION; 2347 cq->gdma_cq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION; 2348 2349 rxq->gdma_id = rxq->gdma_rq->id; 2350 cq->gdma_id = cq->gdma_cq->id; 2351 2352 err = mana_push_wqe(rxq); 2353 if (err) 2354 goto out; 2355 2356 if (cq->gdma_id >= gc->max_num_cqs) { 2357 err = EINVAL; 2358 goto out; 2359 } 2360 2361 gc->cq_table[cq->gdma_id] = cq->gdma_cq; 2362 2363 /* Allocate and start the cleanup task on CQ */ 2364 cq->do_not_ring_db = false; 2365 2366 NET_TASK_INIT(&cq->cleanup_task, 0, mana_poll, cq); 2367 cq->cleanup_tq = 2368 taskqueue_create_fast("mana rx cq cleanup", 2369 M_WAITOK, taskqueue_thread_enqueue, 2370 &cq->cleanup_tq); 2371 2372 if (apc->last_rx_cq_bind_cpu < 0) 2373 apc->last_rx_cq_bind_cpu = CPU_FIRST(); 2374 cq->cpu = apc->last_rx_cq_bind_cpu; 2375 apc->last_rx_cq_bind_cpu = CPU_NEXT(apc->last_rx_cq_bind_cpu); 2376 2377 if (apc->bind_cleanup_thread_cpu) { 2378 cpuset_t cpu_mask; 2379 CPU_SETOF(cq->cpu, &cpu_mask); 2380 taskqueue_start_threads_cpuset(&cq->cleanup_tq, 2381 1, PI_NET, &cpu_mask, 2382 "mana cq p%u-rx%u-cpu%d", 2383 apc->port_idx, rxq->rxq_idx, cq->cpu); 2384 } else { 2385 taskqueue_start_threads(&cq->cleanup_tq, 1, 2386 PI_NET, "mana cq p%u-rx%u", 2387 apc->port_idx, rxq->rxq_idx); 2388 } 2389 2390 mana_gd_ring_cq(cq->gdma_cq, SET_ARM_BIT); 2391 out: 2392 if (!err) 2393 return rxq; 2394 2395 if_printf(ndev, "Failed to create RXQ: err = %d\n", err); 2396 2397 mana_destroy_rxq(apc, rxq, false); 2398 2399 if (cq) 2400 mana_deinit_cq(apc, cq); 2401 2402 return NULL; 2403 } 2404 2405 static int 2406 mana_add_rx_queues(struct mana_port_context *apc, if_t ndev) 2407 { 2408 struct mana_context *ac = apc->ac; 2409 struct mana_rxq *rxq; 2410 int err = 0; 2411 int i; 2412 2413 for (i = 0; i < apc->num_queues; i++) { 2414 rxq = mana_create_rxq(apc, i, &ac->eqs[i], ndev); 2415 if (!rxq) { 2416 err = ENOMEM; 2417 goto out; 2418 } 2419 2420 apc->rxqs[i] = rxq; 2421 } 2422 2423 apc->default_rxobj = apc->rxqs[0]->rxobj; 2424 out: 2425 return err; 2426 } 2427 2428 static void 2429 mana_destroy_vport(struct mana_port_context *apc) 2430 { 2431 struct mana_rxq *rxq; 2432 uint32_t rxq_idx; 2433 2434 for (rxq_idx = 0; rxq_idx < apc->num_queues; rxq_idx++) { 2435 rxq = apc->rxqs[rxq_idx]; 2436 if (!rxq) 2437 continue; 2438 2439 mana_destroy_rxq(apc, rxq, true); 2440 apc->rxqs[rxq_idx] = NULL; 2441 } 2442 2443 mana_destroy_txq(apc); 2444 2445 mana_uncfg_vport(apc); 2446 } 2447 2448 static int 2449 mana_create_vport(struct mana_port_context *apc, if_t net) 2450 { 2451 struct gdma_dev *gd = apc->ac->gdma_dev; 2452 int err; 2453 2454 apc->default_rxobj = INVALID_MANA_HANDLE; 2455 2456 err = mana_cfg_vport(apc, gd->pdid, gd->doorbell); 2457 if (err) 2458 return err; 2459 2460 return mana_create_txq(apc, net); 2461 } 2462 2463 2464 static void mana_rss_table_init(struct mana_port_context *apc) 2465 { 2466 int i; 2467 2468 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) 2469 apc->indir_table[i] = i % apc->num_queues; 2470 } 2471 2472 int mana_config_rss(struct mana_port_context *apc, enum TRI_STATE rx, 2473 bool update_hash, bool update_tab) 2474 { 2475 uint32_t queue_idx; 2476 int err; 2477 int i; 2478 2479 if (update_tab) { 2480 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) { 2481 queue_idx = apc->indir_table[i]; 2482 apc->rxobj_table[i] = apc->rxqs[queue_idx]->rxobj; 2483 } 2484 } 2485 2486 err = mana_cfg_vport_steering(apc, rx, true, update_hash, update_tab); 2487 if (err) 2488 return err; 2489 2490 mana_fence_rqs(apc); 2491 2492 return 0; 2493 } 2494 2495 static int 2496 mana_init_port(if_t ndev) 2497 { 2498 struct mana_port_context *apc = if_getsoftc(ndev); 2499 uint32_t max_txq, max_rxq, max_queues; 2500 int port_idx = apc->port_idx; 2501 uint32_t num_indirect_entries; 2502 int err; 2503 2504 err = mana_init_port_context(apc); 2505 if (err) 2506 return err; 2507 2508 err = mana_query_vport_cfg(apc, port_idx, &max_txq, &max_rxq, 2509 &num_indirect_entries); 2510 if (err) { 2511 if_printf(ndev, "Failed to query info for vPort %d\n", 2512 port_idx); 2513 goto reset_apc; 2514 } 2515 2516 max_queues = min_t(uint32_t, max_txq, max_rxq); 2517 if (apc->max_queues > max_queues) 2518 apc->max_queues = max_queues; 2519 2520 if (apc->num_queues > apc->max_queues) 2521 apc->num_queues = apc->max_queues; 2522 2523 return 0; 2524 2525 reset_apc: 2526 bus_dma_tag_destroy(apc->rx_buf_tag); 2527 apc->rx_buf_tag = NULL; 2528 free(apc->rxqs, M_DEVBUF); 2529 apc->rxqs = NULL; 2530 return err; 2531 } 2532 2533 int 2534 mana_alloc_queues(if_t ndev) 2535 { 2536 struct mana_port_context *apc = if_getsoftc(ndev); 2537 int err; 2538 2539 err = mana_create_vport(apc, ndev); 2540 if (err) 2541 return err; 2542 2543 err = mana_add_rx_queues(apc, ndev); 2544 if (err) 2545 goto destroy_vport; 2546 2547 apc->rss_state = apc->num_queues > 1 ? TRI_STATE_TRUE : TRI_STATE_FALSE; 2548 2549 mana_rss_table_init(apc); 2550 2551 err = mana_config_rss(apc, TRI_STATE_TRUE, true, true); 2552 if (err) 2553 goto destroy_vport; 2554 2555 return 0; 2556 2557 destroy_vport: 2558 mana_destroy_vport(apc); 2559 return err; 2560 } 2561 2562 static int 2563 mana_up(struct mana_port_context *apc) 2564 { 2565 int err; 2566 2567 mana_dbg(NULL, "mana_up called\n"); 2568 2569 err = mana_alloc_queues(apc->ndev); 2570 if (err) { 2571 mana_err(NULL, "Faile alloc mana queues: %d\n", err); 2572 return err; 2573 } 2574 2575 /* Add queue specific sysctl */ 2576 mana_sysctl_add_queues(apc); 2577 2578 apc->port_is_up = true; 2579 2580 /* Ensure port state updated before txq state */ 2581 wmb(); 2582 2583 if_link_state_change(apc->ndev, LINK_STATE_UP); 2584 if_setdrvflagbits(apc->ndev, IFF_DRV_RUNNING, IFF_DRV_OACTIVE); 2585 2586 return 0; 2587 } 2588 2589 2590 static void 2591 mana_init(void *arg) 2592 { 2593 struct mana_port_context *apc = (struct mana_port_context *)arg; 2594 2595 MANA_APC_LOCK_LOCK(apc); 2596 if (!apc->port_is_up) { 2597 mana_up(apc); 2598 } 2599 MANA_APC_LOCK_UNLOCK(apc); 2600 } 2601 2602 static int 2603 mana_dealloc_queues(if_t ndev) 2604 { 2605 struct mana_port_context *apc = if_getsoftc(ndev); 2606 struct mana_txq *txq; 2607 int i, err; 2608 2609 if (apc->port_is_up) 2610 return EINVAL; 2611 2612 /* No packet can be transmitted now since apc->port_is_up is false. 2613 * There is still a tiny chance that mana_poll_tx_cq() can re-enable 2614 * a txq because it may not timely see apc->port_is_up being cleared 2615 * to false, but it doesn't matter since mana_start_xmit() drops any 2616 * new packets due to apc->port_is_up being false. 2617 * 2618 * Drain all the in-flight TX packets 2619 */ 2620 for (i = 0; i < apc->num_queues; i++) { 2621 txq = &apc->tx_qp[i].txq; 2622 2623 struct mana_cq *tx_cq = &apc->tx_qp[i].tx_cq; 2624 struct mana_cq *rx_cq = &(apc->rxqs[i]->rx_cq); 2625 2626 tx_cq->do_not_ring_db = true; 2627 rx_cq->do_not_ring_db = true; 2628 2629 /* Schedule a cleanup task */ 2630 taskqueue_enqueue(tx_cq->cleanup_tq, &tx_cq->cleanup_task); 2631 2632 while (atomic_read(&txq->pending_sends) > 0) 2633 usleep_range(1000, 2000); 2634 } 2635 2636 /* We're 100% sure the queues can no longer be woken up, because 2637 * we're sure now mana_poll_tx_cq() can't be running. 2638 */ 2639 2640 apc->rss_state = TRI_STATE_FALSE; 2641 err = mana_config_rss(apc, TRI_STATE_FALSE, false, false); 2642 if (err) { 2643 if_printf(ndev, "Failed to disable vPort: %d\n", err); 2644 return err; 2645 } 2646 2647 mana_destroy_vport(apc); 2648 2649 return 0; 2650 } 2651 2652 static int 2653 mana_down(struct mana_port_context *apc) 2654 { 2655 int err = 0; 2656 2657 apc->port_st_save = apc->port_is_up; 2658 apc->port_is_up = false; 2659 2660 /* Ensure port state updated before txq state */ 2661 wmb(); 2662 2663 if (apc->port_st_save) { 2664 if_setdrvflagbits(apc->ndev, IFF_DRV_OACTIVE, 2665 IFF_DRV_RUNNING); 2666 if_link_state_change(apc->ndev, LINK_STATE_DOWN); 2667 2668 mana_sysctl_free_queues(apc); 2669 2670 err = mana_dealloc_queues(apc->ndev); 2671 if (err) { 2672 if_printf(apc->ndev, 2673 "Failed to bring down mana interface: %d\n", err); 2674 } 2675 } 2676 2677 return err; 2678 } 2679 2680 int 2681 mana_detach(if_t ndev) 2682 { 2683 struct mana_port_context *apc = if_getsoftc(ndev); 2684 int err; 2685 2686 ether_ifdetach(ndev); 2687 2688 if (!apc) 2689 return 0; 2690 2691 MANA_APC_LOCK_LOCK(apc); 2692 err = mana_down(apc); 2693 MANA_APC_LOCK_UNLOCK(apc); 2694 2695 mana_cleanup_port_context(apc); 2696 2697 MANA_APC_LOCK_DESTROY(apc); 2698 2699 free(apc, M_DEVBUF); 2700 2701 return err; 2702 } 2703 2704 static int 2705 mana_probe_port(struct mana_context *ac, int port_idx, 2706 if_t *ndev_storage) 2707 { 2708 struct gdma_context *gc = ac->gdma_dev->gdma_context; 2709 struct mana_port_context *apc; 2710 if_t ndev; 2711 int err; 2712 2713 ndev = if_alloc_dev(IFT_ETHER, gc->dev); 2714 if (!ndev) { 2715 mana_err(NULL, "Failed to allocate ifnet struct\n"); 2716 return ENOMEM; 2717 } 2718 2719 *ndev_storage = ndev; 2720 2721 apc = malloc(sizeof(*apc), M_DEVBUF, M_WAITOK | M_ZERO); 2722 if (!apc) { 2723 mana_err(NULL, "Failed to allocate port context\n"); 2724 err = ENOMEM; 2725 goto free_net; 2726 } 2727 2728 apc->ac = ac; 2729 apc->ndev = ndev; 2730 apc->max_queues = gc->max_num_queues; 2731 apc->num_queues = min_t(unsigned int, 2732 gc->max_num_queues, MANA_MAX_NUM_QUEUES); 2733 apc->port_handle = INVALID_MANA_HANDLE; 2734 apc->port_idx = port_idx; 2735 apc->frame_size = DEFAULT_FRAME_SIZE; 2736 apc->last_tx_cq_bind_cpu = -1; 2737 apc->last_rx_cq_bind_cpu = -1; 2738 apc->vport_use_count = 0; 2739 2740 MANA_APC_LOCK_INIT(apc); 2741 2742 if_initname(ndev, device_get_name(gc->dev), port_idx); 2743 if_setdev(ndev,gc->dev); 2744 if_setsoftc(ndev, apc); 2745 2746 if_setflags(ndev, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 2747 if_setinitfn(ndev, mana_init); 2748 if_settransmitfn(ndev, mana_start_xmit); 2749 if_setqflushfn(ndev, mana_qflush); 2750 if_setioctlfn(ndev, mana_ioctl); 2751 if_setgetcounterfn(ndev, mana_get_counter); 2752 2753 if_setmtu(ndev, ETHERMTU); 2754 if_setbaudrate(ndev, IF_Gbps(100)); 2755 2756 mana_rss_key_fill(apc->hashkey, MANA_HASH_KEY_SIZE); 2757 2758 err = mana_init_port(ndev); 2759 if (err) 2760 goto reset_apc; 2761 2762 if_setcapabilitiesbit(ndev, 2763 IFCAP_TXCSUM | IFCAP_TXCSUM_IPV6 | 2764 IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6 | 2765 IFCAP_TSO4 | IFCAP_TSO6 | 2766 IFCAP_LRO | IFCAP_LINKSTATE, 0); 2767 2768 /* Enable all available capabilities by default. */ 2769 if_setcapenable(ndev, if_getcapabilities(ndev)); 2770 2771 /* TSO parameters */ 2772 if_sethwtsomax(ndev, MAX_MBUF_FRAGS * MANA_TSO_MAXSEG_SZ - 2773 (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN)); 2774 if_sethwtsomaxsegcount(ndev, MAX_MBUF_FRAGS); 2775 if_sethwtsomaxsegsize(ndev, PAGE_SIZE); 2776 2777 ifmedia_init(&apc->media, IFM_IMASK, 2778 mana_ifmedia_change, mana_ifmedia_status); 2779 ifmedia_add(&apc->media, IFM_ETHER | IFM_AUTO, 0, NULL); 2780 ifmedia_set(&apc->media, IFM_ETHER | IFM_AUTO); 2781 2782 ether_ifattach(ndev, apc->mac_addr); 2783 2784 /* Initialize statistics */ 2785 mana_alloc_counters((counter_u64_t *)&apc->port_stats, 2786 sizeof(struct mana_port_stats)); 2787 mana_sysctl_add_port(apc); 2788 2789 /* Tell the stack that the interface is not active */ 2790 if_setdrvflagbits(ndev, IFF_DRV_OACTIVE, IFF_DRV_RUNNING); 2791 2792 return 0; 2793 2794 reset_apc: 2795 free(apc, M_DEVBUF); 2796 free_net: 2797 *ndev_storage = NULL; 2798 if_printf(ndev, "Failed to probe vPort %d: %d\n", port_idx, err); 2799 if_free(ndev); 2800 return err; 2801 } 2802 2803 int mana_probe(struct gdma_dev *gd) 2804 { 2805 struct gdma_context *gc = gd->gdma_context; 2806 device_t dev = gc->dev; 2807 struct mana_context *ac; 2808 int err; 2809 int i; 2810 2811 device_printf(dev, "%s protocol version: %d.%d.%d\n", DEVICE_NAME, 2812 MANA_MAJOR_VERSION, MANA_MINOR_VERSION, MANA_MICRO_VERSION); 2813 2814 err = mana_gd_register_device(gd); 2815 if (err) 2816 return err; 2817 2818 ac = malloc(sizeof(*ac), M_DEVBUF, M_WAITOK | M_ZERO); 2819 if (!ac) 2820 return ENOMEM; 2821 2822 ac->gdma_dev = gd; 2823 ac->num_ports = 1; 2824 gd->driver_data = ac; 2825 2826 err = mana_create_eq(ac); 2827 if (err) 2828 goto out; 2829 2830 err = mana_query_device_cfg(ac, MANA_MAJOR_VERSION, MANA_MINOR_VERSION, 2831 MANA_MICRO_VERSION, &ac->num_ports); 2832 if (err) 2833 goto out; 2834 2835 if (ac->num_ports > MAX_PORTS_IN_MANA_DEV) 2836 ac->num_ports = MAX_PORTS_IN_MANA_DEV; 2837 2838 for (i = 0; i < ac->num_ports; i++) { 2839 err = mana_probe_port(ac, i, &ac->ports[i]); 2840 if (err) { 2841 device_printf(dev, 2842 "Failed to probe mana port %d\n", i); 2843 break; 2844 } 2845 } 2846 2847 out: 2848 if (err) 2849 mana_remove(gd); 2850 2851 return err; 2852 } 2853 2854 void 2855 mana_remove(struct gdma_dev *gd) 2856 { 2857 struct gdma_context *gc = gd->gdma_context; 2858 struct mana_context *ac = gd->driver_data; 2859 device_t dev = gc->dev; 2860 if_t ndev; 2861 int i; 2862 2863 for (i = 0; i < ac->num_ports; i++) { 2864 ndev = ac->ports[i]; 2865 if (!ndev) { 2866 if (i == 0) 2867 device_printf(dev, "No net device to remove\n"); 2868 goto out; 2869 } 2870 2871 mana_detach(ndev); 2872 2873 if_free(ndev); 2874 } 2875 2876 mana_destroy_eq(ac); 2877 2878 out: 2879 mana_gd_deregister_device(gd); 2880 gd->driver_data = NULL; 2881 gd->gdma_context = NULL; 2882 free(ac, M_DEVBUF); 2883 } 2884