Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/mana/mana_en.c
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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(struct ifnet *ifp __unused) 90 { 91 return EOPNOTSUPP; 92 } 93 94 static void 95 mana_ifmedia_status(struct ifnet *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(struct ifnet *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(struct ifnet *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(struct ifnet *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 (ifp->if_mtu == 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 (ifp->if_flags & IFF_UP) { 203 if ((ifp->if_drv_flags & 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 (ifp->if_drv_flags & 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 struct ifnet *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 struct ifnet *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(struct ifnet *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 MANA_APC_LOCK_LOCK(apc); 987 apc->vport_use_count--; 988 if (apc->vport_use_count < 0) { 989 mana_err(NULL, 990 "WARNING: vport_use_count less than 0: %u\n", 991 apc->vport_use_count); 992 } 993 MANA_APC_LOCK_UNLOCK(apc); 994 } 995 996 int 997 mana_cfg_vport(struct mana_port_context *apc, uint32_t protection_dom_id, 998 uint32_t doorbell_pg_id) 999 { 1000 struct mana_config_vport_resp resp = {}; 1001 struct mana_config_vport_req req = {}; 1002 int err; 1003 1004 /* This function is used to program the Ethernet port in the hardware 1005 * table. It can be called from the Ethernet driver or the RDMA driver. 1006 * 1007 * For Ethernet usage, the hardware supports only one active user on a 1008 * physical port. The driver checks on the port usage before programming 1009 * the hardware when creating the RAW QP (RDMA driver) or exposing the 1010 * device to kernel NET layer (Ethernet driver). 1011 * 1012 * Because the RDMA driver doesn't know in advance which QP type the 1013 * user will create, it exposes the device with all its ports. The user 1014 * may not be able to create RAW QP on a port if this port is already 1015 * in used by the Ethernet driver from the kernel. 1016 * 1017 * This physical port limitation only applies to the RAW QP. For RC QP, 1018 * the hardware doesn't have this limitation. The user can create RC 1019 * QPs on a physical port up to the hardware limits independent of the 1020 * Ethernet usage on the same port. 1021 */ 1022 MANA_APC_LOCK_LOCK(apc); 1023 if (apc->vport_use_count > 0) { 1024 MANA_APC_LOCK_UNLOCK(apc); 1025 return EBUSY; 1026 } 1027 apc->vport_use_count++; 1028 MANA_APC_LOCK_UNLOCK(apc); 1029 1030 mana_gd_init_req_hdr(&req.hdr, MANA_CONFIG_VPORT_TX, 1031 sizeof(req), sizeof(resp)); 1032 req.vport = apc->port_handle; 1033 req.pdid = protection_dom_id; 1034 req.doorbell_pageid = doorbell_pg_id; 1035 1036 err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 1037 sizeof(resp)); 1038 if (err) { 1039 if_printf(apc->ndev, "Failed to configure vPort: %d\n", err); 1040 goto out; 1041 } 1042 1043 err = mana_verify_resp_hdr(&resp.hdr, MANA_CONFIG_VPORT_TX, 1044 sizeof(resp)); 1045 if (err || resp.hdr.status) { 1046 if_printf(apc->ndev, "Failed to configure vPort: %d, 0x%x\n", 1047 err, resp.hdr.status); 1048 if (!err) 1049 err = EPROTO; 1050 1051 goto out; 1052 } 1053 1054 apc->tx_shortform_allowed = resp.short_form_allowed; 1055 apc->tx_vp_offset = resp.tx_vport_offset; 1056 1057 if_printf(apc->ndev, "Configured vPort %ju PD %u DB %u\n", 1058 apc->port_handle, protection_dom_id, doorbell_pg_id); 1059 1060 out: 1061 if (err) 1062 mana_uncfg_vport(apc); 1063 1064 return err; 1065 } 1066 1067 static int 1068 mana_cfg_vport_steering(struct mana_port_context *apc, 1069 enum TRI_STATE rx, 1070 bool update_default_rxobj, bool update_key, 1071 bool update_tab) 1072 { 1073 uint16_t num_entries = MANA_INDIRECT_TABLE_SIZE; 1074 struct mana_cfg_rx_steer_req *req = NULL; 1075 struct mana_cfg_rx_steer_resp resp = {}; 1076 struct ifnet *ndev = apc->ndev; 1077 mana_handle_t *req_indir_tab; 1078 uint32_t req_buf_size; 1079 int err; 1080 1081 req_buf_size = sizeof(*req) + sizeof(mana_handle_t) * num_entries; 1082 req = malloc(req_buf_size, M_DEVBUF, M_WAITOK | M_ZERO); 1083 if (!req) 1084 return ENOMEM; 1085 1086 mana_gd_init_req_hdr(&req->hdr, MANA_CONFIG_VPORT_RX, req_buf_size, 1087 sizeof(resp)); 1088 1089 req->vport = apc->port_handle; 1090 req->num_indir_entries = num_entries; 1091 req->indir_tab_offset = sizeof(*req); 1092 req->rx_enable = rx; 1093 req->rss_enable = apc->rss_state; 1094 req->update_default_rxobj = update_default_rxobj; 1095 req->update_hashkey = update_key; 1096 req->update_indir_tab = update_tab; 1097 req->default_rxobj = apc->default_rxobj; 1098 1099 if (update_key) 1100 memcpy(&req->hashkey, apc->hashkey, MANA_HASH_KEY_SIZE); 1101 1102 if (update_tab) { 1103 req_indir_tab = (mana_handle_t *)(req + 1); 1104 memcpy(req_indir_tab, apc->rxobj_table, 1105 req->num_indir_entries * sizeof(mana_handle_t)); 1106 } 1107 1108 err = mana_send_request(apc->ac, req, req_buf_size, &resp, 1109 sizeof(resp)); 1110 if (err) { 1111 if_printf(ndev, "Failed to configure vPort RX: %d\n", err); 1112 goto out; 1113 } 1114 1115 err = mana_verify_resp_hdr(&resp.hdr, MANA_CONFIG_VPORT_RX, 1116 sizeof(resp)); 1117 if (err) { 1118 if_printf(ndev, "vPort RX configuration failed: %d\n", err); 1119 goto out; 1120 } 1121 1122 if (resp.hdr.status) { 1123 if_printf(ndev, "vPort RX configuration failed: 0x%x\n", 1124 resp.hdr.status); 1125 err = EPROTO; 1126 } 1127 1128 if_printf(ndev, "Configured steering vPort %ju entries %u\n", 1129 apc->port_handle, num_entries); 1130 1131 out: 1132 free(req, M_DEVBUF); 1133 return err; 1134 } 1135 1136 int 1137 mana_create_wq_obj(struct mana_port_context *apc, 1138 mana_handle_t vport, 1139 uint32_t wq_type, struct mana_obj_spec *wq_spec, 1140 struct mana_obj_spec *cq_spec, 1141 mana_handle_t *wq_obj) 1142 { 1143 struct mana_create_wqobj_resp resp = {}; 1144 struct mana_create_wqobj_req req = {}; 1145 struct ifnet *ndev = apc->ndev; 1146 int err; 1147 1148 mana_gd_init_req_hdr(&req.hdr, MANA_CREATE_WQ_OBJ, 1149 sizeof(req), sizeof(resp)); 1150 req.vport = vport; 1151 req.wq_type = wq_type; 1152 req.wq_gdma_region = wq_spec->gdma_region; 1153 req.cq_gdma_region = cq_spec->gdma_region; 1154 req.wq_size = wq_spec->queue_size; 1155 req.cq_size = cq_spec->queue_size; 1156 req.cq_moderation_ctx_id = cq_spec->modr_ctx_id; 1157 req.cq_parent_qid = cq_spec->attached_eq; 1158 1159 err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 1160 sizeof(resp)); 1161 if (err) { 1162 if_printf(ndev, "Failed to create WQ object: %d\n", err); 1163 goto out; 1164 } 1165 1166 err = mana_verify_resp_hdr(&resp.hdr, MANA_CREATE_WQ_OBJ, 1167 sizeof(resp)); 1168 if (err || resp.hdr.status) { 1169 if_printf(ndev, "Failed to create WQ object: %d, 0x%x\n", err, 1170 resp.hdr.status); 1171 if (!err) 1172 err = EPROTO; 1173 goto out; 1174 } 1175 1176 if (resp.wq_obj == INVALID_MANA_HANDLE) { 1177 if_printf(ndev, "Got an invalid WQ object handle\n"); 1178 err = EPROTO; 1179 goto out; 1180 } 1181 1182 *wq_obj = resp.wq_obj; 1183 wq_spec->queue_index = resp.wq_id; 1184 cq_spec->queue_index = resp.cq_id; 1185 1186 return 0; 1187 out: 1188 return err; 1189 } 1190 1191 void 1192 mana_destroy_wq_obj(struct mana_port_context *apc, uint32_t wq_type, 1193 mana_handle_t wq_obj) 1194 { 1195 struct mana_destroy_wqobj_resp resp = {}; 1196 struct mana_destroy_wqobj_req req = {}; 1197 struct ifnet *ndev = apc->ndev; 1198 int err; 1199 1200 mana_gd_init_req_hdr(&req.hdr, MANA_DESTROY_WQ_OBJ, 1201 sizeof(req), sizeof(resp)); 1202 req.wq_type = wq_type; 1203 req.wq_obj_handle = wq_obj; 1204 1205 err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 1206 sizeof(resp)); 1207 if (err) { 1208 if_printf(ndev, "Failed to destroy WQ object: %d\n", err); 1209 return; 1210 } 1211 1212 err = mana_verify_resp_hdr(&resp.hdr, MANA_DESTROY_WQ_OBJ, 1213 sizeof(resp)); 1214 if (err || resp.hdr.status) 1215 if_printf(ndev, "Failed to destroy WQ object: %d, 0x%x\n", 1216 err, resp.hdr.status); 1217 } 1218 1219 static void 1220 mana_destroy_eq(struct mana_context *ac) 1221 { 1222 struct gdma_context *gc = ac->gdma_dev->gdma_context; 1223 struct gdma_queue *eq; 1224 int i; 1225 1226 if (!ac->eqs) 1227 return; 1228 1229 for (i = 0; i < gc->max_num_queues; i++) { 1230 eq = ac->eqs[i].eq; 1231 if (!eq) 1232 continue; 1233 1234 mana_gd_destroy_queue(gc, eq); 1235 } 1236 1237 free(ac->eqs, M_DEVBUF); 1238 ac->eqs = NULL; 1239 } 1240 1241 static int 1242 mana_create_eq(struct mana_context *ac) 1243 { 1244 struct gdma_dev *gd = ac->gdma_dev; 1245 struct gdma_context *gc = gd->gdma_context; 1246 struct gdma_queue_spec spec = {}; 1247 int err; 1248 int i; 1249 1250 ac->eqs = mallocarray(gc->max_num_queues, sizeof(struct mana_eq), 1251 M_DEVBUF, M_WAITOK | M_ZERO); 1252 if (!ac->eqs) 1253 return ENOMEM; 1254 1255 spec.type = GDMA_EQ; 1256 spec.monitor_avl_buf = false; 1257 spec.queue_size = EQ_SIZE; 1258 spec.eq.callback = NULL; 1259 spec.eq.context = ac->eqs; 1260 spec.eq.log2_throttle_limit = LOG2_EQ_THROTTLE; 1261 1262 for (i = 0; i < gc->max_num_queues; i++) { 1263 err = mana_gd_create_mana_eq(gd, &spec, &ac->eqs[i].eq); 1264 if (err) 1265 goto out; 1266 } 1267 1268 return 0; 1269 out: 1270 mana_destroy_eq(ac); 1271 return err; 1272 } 1273 1274 static int 1275 mana_fence_rq(struct mana_port_context *apc, struct mana_rxq *rxq) 1276 { 1277 struct mana_fence_rq_resp resp = {}; 1278 struct mana_fence_rq_req req = {}; 1279 int err; 1280 1281 init_completion(&rxq->fence_event); 1282 1283 mana_gd_init_req_hdr(&req.hdr, MANA_FENCE_RQ, 1284 sizeof(req), sizeof(resp)); 1285 req.wq_obj_handle = rxq->rxobj; 1286 1287 err = mana_send_request(apc->ac, &req, sizeof(req), &resp, 1288 sizeof(resp)); 1289 if (err) { 1290 if_printf(apc->ndev, "Failed to fence RQ %u: %d\n", 1291 rxq->rxq_idx, err); 1292 return err; 1293 } 1294 1295 err = mana_verify_resp_hdr(&resp.hdr, MANA_FENCE_RQ, sizeof(resp)); 1296 if (err || resp.hdr.status) { 1297 if_printf(apc->ndev, "Failed to fence RQ %u: %d, 0x%x\n", 1298 rxq->rxq_idx, err, resp.hdr.status); 1299 if (!err) 1300 err = EPROTO; 1301 1302 return err; 1303 } 1304 1305 if (wait_for_completion_timeout(&rxq->fence_event, 10 * hz)) { 1306 if_printf(apc->ndev, "Failed to fence RQ %u: timed out\n", 1307 rxq->rxq_idx); 1308 return ETIMEDOUT; 1309 } 1310 1311 return 0; 1312 } 1313 1314 static void 1315 mana_fence_rqs(struct mana_port_context *apc) 1316 { 1317 unsigned int rxq_idx; 1318 struct mana_rxq *rxq; 1319 int err; 1320 1321 for (rxq_idx = 0; rxq_idx < apc->num_queues; rxq_idx++) { 1322 rxq = apc->rxqs[rxq_idx]; 1323 err = mana_fence_rq(apc, rxq); 1324 1325 /* In case of any error, use sleep instead. */ 1326 if (err) 1327 gdma_msleep(100); 1328 } 1329 } 1330 1331 static int 1332 mana_move_wq_tail(struct gdma_queue *wq, uint32_t num_units) 1333 { 1334 uint32_t used_space_old; 1335 uint32_t used_space_new; 1336 1337 used_space_old = wq->head - wq->tail; 1338 used_space_new = wq->head - (wq->tail + num_units); 1339 1340 if (used_space_new > used_space_old) { 1341 mana_err(NULL, 1342 "WARNING: new used space %u greater than old one %u\n", 1343 used_space_new, used_space_old); 1344 return ERANGE; 1345 } 1346 1347 wq->tail += num_units; 1348 return 0; 1349 } 1350 1351 static void 1352 mana_poll_tx_cq(struct mana_cq *cq) 1353 { 1354 struct gdma_comp *completions = cq->gdma_comp_buf; 1355 struct gdma_posted_wqe_info *wqe_info; 1356 struct mana_send_buf_info *tx_info; 1357 unsigned int pkt_transmitted = 0; 1358 unsigned int wqe_unit_cnt = 0; 1359 struct mana_txq *txq = cq->txq; 1360 struct mana_port_context *apc; 1361 uint16_t next_to_complete; 1362 struct ifnet *ndev; 1363 int comp_read; 1364 int txq_idx = txq->idx;; 1365 int i; 1366 int sa_drop = 0; 1367 1368 struct gdma_queue *gdma_wq; 1369 unsigned int avail_space; 1370 bool txq_full = false; 1371 1372 ndev = txq->ndev; 1373 apc = if_getsoftc(ndev); 1374 1375 comp_read = mana_gd_poll_cq(cq->gdma_cq, completions, 1376 CQE_POLLING_BUFFER); 1377 1378 if (comp_read < 1) 1379 return; 1380 1381 next_to_complete = txq->next_to_complete; 1382 1383 for (i = 0; i < comp_read; i++) { 1384 struct mana_tx_comp_oob *cqe_oob; 1385 1386 if (!completions[i].is_sq) { 1387 mana_err(NULL, "WARNING: Not for SQ\n"); 1388 return; 1389 } 1390 1391 cqe_oob = (struct mana_tx_comp_oob *)completions[i].cqe_data; 1392 if (cqe_oob->cqe_hdr.client_type != 1393 MANA_CQE_COMPLETION) { 1394 mana_err(NULL, 1395 "WARNING: Invalid CQE client type %u\n", 1396 cqe_oob->cqe_hdr.client_type); 1397 return; 1398 } 1399 1400 switch (cqe_oob->cqe_hdr.cqe_type) { 1401 case CQE_TX_OKAY: 1402 break; 1403 1404 case CQE_TX_SA_DROP: 1405 case CQE_TX_MTU_DROP: 1406 case CQE_TX_INVALID_OOB: 1407 case CQE_TX_INVALID_ETH_TYPE: 1408 case CQE_TX_HDR_PROCESSING_ERROR: 1409 case CQE_TX_VF_DISABLED: 1410 case CQE_TX_VPORT_IDX_OUT_OF_RANGE: 1411 case CQE_TX_VPORT_DISABLED: 1412 case CQE_TX_VLAN_TAGGING_VIOLATION: 1413 sa_drop ++; 1414 mana_err(NULL, 1415 "TX: txq %d CQE error %d, ntc = %d, " 1416 "pending sends = %d: err ignored.\n", 1417 txq_idx, cqe_oob->cqe_hdr.cqe_type, 1418 next_to_complete, txq->pending_sends); 1419 break; 1420 1421 default: 1422 /* If the CQE type is unexpected, log an error, 1423 * and go through the error path. 1424 */ 1425 mana_err(NULL, 1426 "ERROR: TX: Unexpected CQE type %d: HW BUG?\n", 1427 cqe_oob->cqe_hdr.cqe_type); 1428 return; 1429 } 1430 if (txq->gdma_txq_id != completions[i].wq_num) { 1431 mana_dbg(NULL, 1432 "txq gdma id not match completion wq num: " 1433 "%d != %d\n", 1434 txq->gdma_txq_id, completions[i].wq_num); 1435 break; 1436 } 1437 1438 tx_info = &txq->tx_buf_info[next_to_complete]; 1439 if (!tx_info->mbuf) { 1440 mana_err(NULL, 1441 "WARNING: txq %d Empty mbuf on tx_info: %u, " 1442 "ntu = %u, pending_sends = %d, " 1443 "transmitted = %d, sa_drop = %d, i = %d, comp_read = %d\n", 1444 txq_idx, next_to_complete, txq->next_to_use, 1445 txq->pending_sends, pkt_transmitted, sa_drop, 1446 i, comp_read); 1447 break; 1448 } 1449 1450 wqe_info = &tx_info->wqe_inf; 1451 wqe_unit_cnt += wqe_info->wqe_size_in_bu; 1452 1453 mana_tx_unmap_mbuf(apc, tx_info); 1454 mb(); 1455 1456 next_to_complete = 1457 (next_to_complete + 1) % MAX_SEND_BUFFERS_PER_QUEUE; 1458 1459 pkt_transmitted++; 1460 } 1461 1462 txq->next_to_complete = next_to_complete; 1463 1464 if (wqe_unit_cnt == 0) { 1465 mana_err(NULL, 1466 "WARNING: TX ring not proceeding!\n"); 1467 return; 1468 } 1469 1470 mana_move_wq_tail(txq->gdma_sq, wqe_unit_cnt); 1471 1472 /* Ensure tail updated before checking q stop */ 1473 wmb(); 1474 1475 gdma_wq = txq->gdma_sq; 1476 avail_space = mana_gd_wq_avail_space(gdma_wq); 1477 1478 1479 if ((if_getdrvflags(ndev) & MANA_TXQ_FULL) == MANA_TXQ_FULL) { 1480 txq_full = true; 1481 } 1482 1483 /* Ensure checking txq_full before apc->port_is_up. */ 1484 rmb(); 1485 1486 if (txq_full && apc->port_is_up && avail_space >= MAX_TX_WQE_SIZE) { 1487 /* Grab the txq lock and re-test */ 1488 mtx_lock(&txq->txq_mtx); 1489 avail_space = mana_gd_wq_avail_space(gdma_wq); 1490 1491 if ((if_getdrvflags(ndev) & MANA_TXQ_FULL) == MANA_TXQ_FULL && 1492 apc->port_is_up && avail_space >= MAX_TX_WQE_SIZE) { 1493 /* Clear the Q full flag */ 1494 if_setdrvflagbits(apc->ndev, IFF_DRV_RUNNING, 1495 IFF_DRV_OACTIVE); 1496 counter_u64_add(txq->stats.wakeup, 1); 1497 if (txq->alt_txq_idx != txq->idx) { 1498 uint64_t stops = counter_u64_fetch(txq->stats.stop); 1499 uint64_t wakeups = counter_u64_fetch(txq->stats.wakeup); 1500 /* Reset alt_txq_idx back if it is not overloaded */ 1501 if (stops < wakeups) { 1502 txq->alt_txq_idx = txq->idx; 1503 counter_u64_add(txq->stats.alt_reset, 1); 1504 } 1505 } 1506 rmb(); 1507 /* Schedule a tx enqueue task */ 1508 taskqueue_enqueue(txq->enqueue_tq, &txq->enqueue_task); 1509 } 1510 mtx_unlock(&txq->txq_mtx); 1511 } 1512 1513 if (atomic_sub_return(pkt_transmitted, &txq->pending_sends) < 0) 1514 mana_err(NULL, 1515 "WARNING: TX %d pending_sends error: %d\n", 1516 txq->idx, txq->pending_sends); 1517 1518 cq->work_done = pkt_transmitted; 1519 } 1520 1521 static void 1522 mana_post_pkt_rxq(struct mana_rxq *rxq) 1523 { 1524 struct mana_recv_buf_oob *recv_buf_oob; 1525 uint32_t curr_index; 1526 int err; 1527 1528 curr_index = rxq->buf_index++; 1529 if (rxq->buf_index == rxq->num_rx_buf) 1530 rxq->buf_index = 0; 1531 1532 recv_buf_oob = &rxq->rx_oobs[curr_index]; 1533 1534 err = mana_gd_post_and_ring(rxq->gdma_rq, &recv_buf_oob->wqe_req, 1535 &recv_buf_oob->wqe_inf); 1536 if (err) { 1537 mana_err(NULL, "WARNING: rxq %u post pkt err %d\n", 1538 rxq->rxq_idx, err); 1539 return; 1540 } 1541 1542 if (recv_buf_oob->wqe_inf.wqe_size_in_bu != 1) { 1543 mana_err(NULL, "WARNING: rxq %u wqe_size_in_bu %u\n", 1544 rxq->rxq_idx, recv_buf_oob->wqe_inf.wqe_size_in_bu); 1545 } 1546 } 1547 1548 static void 1549 mana_rx_mbuf(struct mbuf *mbuf, struct mana_rxcomp_oob *cqe, 1550 struct mana_rxq *rxq) 1551 { 1552 struct mana_stats *rx_stats = &rxq->stats; 1553 struct ifnet *ndev = rxq->ndev; 1554 uint32_t pkt_len = cqe->ppi[0].pkt_len; 1555 uint16_t rxq_idx = rxq->rxq_idx; 1556 struct mana_port_context *apc; 1557 bool do_lro = false; 1558 bool do_if_input; 1559 1560 apc = if_getsoftc(ndev); 1561 rxq->rx_cq.work_done++; 1562 1563 if (!mbuf) { 1564 return; 1565 } 1566 1567 mbuf->m_flags |= M_PKTHDR; 1568 mbuf->m_pkthdr.len = pkt_len; 1569 mbuf->m_len = pkt_len; 1570 mbuf->m_pkthdr.rcvif = ndev; 1571 1572 if ((ndev->if_capenable & IFCAP_RXCSUM || 1573 ndev->if_capenable & IFCAP_RXCSUM_IPV6) && 1574 (cqe->rx_iphdr_csum_succeed)) { 1575 mbuf->m_pkthdr.csum_flags = CSUM_IP_CHECKED; 1576 mbuf->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1577 if (cqe->rx_tcp_csum_succeed || cqe->rx_udp_csum_succeed) { 1578 mbuf->m_pkthdr.csum_flags |= 1579 (CSUM_DATA_VALID | CSUM_PSEUDO_HDR); 1580 mbuf->m_pkthdr.csum_data = 0xffff; 1581 1582 if (cqe->rx_tcp_csum_succeed) 1583 do_lro = true; 1584 } 1585 } 1586 1587 if (cqe->rx_hashtype != 0) { 1588 mbuf->m_pkthdr.flowid = cqe->ppi[0].pkt_hash; 1589 1590 uint16_t hashtype = cqe->rx_hashtype; 1591 if (hashtype & NDIS_HASH_IPV4_MASK) { 1592 hashtype &= NDIS_HASH_IPV4_MASK; 1593 switch (hashtype) { 1594 case NDIS_HASH_TCP_IPV4: 1595 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV4); 1596 break; 1597 case NDIS_HASH_UDP_IPV4: 1598 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV4); 1599 break; 1600 default: 1601 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV4); 1602 } 1603 } else if (hashtype & NDIS_HASH_IPV6_MASK) { 1604 hashtype &= NDIS_HASH_IPV6_MASK; 1605 switch (hashtype) { 1606 case NDIS_HASH_TCP_IPV6: 1607 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV6); 1608 break; 1609 case NDIS_HASH_TCP_IPV6_EX: 1610 M_HASHTYPE_SET(mbuf, 1611 M_HASHTYPE_RSS_TCP_IPV6_EX); 1612 break; 1613 case NDIS_HASH_UDP_IPV6: 1614 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV6); 1615 break; 1616 case NDIS_HASH_UDP_IPV6_EX: 1617 M_HASHTYPE_SET(mbuf, 1618 M_HASHTYPE_RSS_UDP_IPV6_EX); 1619 break; 1620 default: 1621 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV6); 1622 } 1623 } else { 1624 M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH); 1625 } 1626 } else { 1627 mbuf->m_pkthdr.flowid = rxq_idx; 1628 M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE); 1629 } 1630 1631 do_if_input = true; 1632 if ((ndev->if_capenable & IFCAP_LRO) && do_lro) { 1633 if (rxq->lro.lro_cnt != 0 && 1634 tcp_lro_rx(&rxq->lro, mbuf, 0) == 0) 1635 do_if_input = false; 1636 } 1637 if (do_if_input) { 1638 ndev->if_input(ndev, mbuf); 1639 } 1640 1641 counter_enter(); 1642 counter_u64_add_protected(rx_stats->packets, 1); 1643 counter_u64_add_protected(apc->port_stats.rx_packets, 1); 1644 counter_u64_add_protected(rx_stats->bytes, pkt_len); 1645 counter_u64_add_protected(apc->port_stats.rx_bytes, pkt_len); 1646 counter_exit(); 1647 } 1648 1649 static void 1650 mana_process_rx_cqe(struct mana_rxq *rxq, struct mana_cq *cq, 1651 struct gdma_comp *cqe) 1652 { 1653 struct mana_rxcomp_oob *oob = (struct mana_rxcomp_oob *)cqe->cqe_data; 1654 struct mana_recv_buf_oob *rxbuf_oob; 1655 struct ifnet *ndev = rxq->ndev; 1656 struct mana_port_context *apc; 1657 struct mbuf *old_mbuf; 1658 uint32_t curr, pktlen; 1659 int err; 1660 1661 switch (oob->cqe_hdr.cqe_type) { 1662 case CQE_RX_OKAY: 1663 break; 1664 1665 case CQE_RX_TRUNCATED: 1666 apc = if_getsoftc(ndev); 1667 counter_u64_add(apc->port_stats.rx_drops, 1); 1668 rxbuf_oob = &rxq->rx_oobs[rxq->buf_index]; 1669 if_printf(ndev, "Dropped a truncated packet\n"); 1670 goto drop; 1671 1672 case CQE_RX_COALESCED_4: 1673 if_printf(ndev, "RX coalescing is unsupported\n"); 1674 return; 1675 1676 case CQE_RX_OBJECT_FENCE: 1677 complete(&rxq->fence_event); 1678 return; 1679 1680 default: 1681 if_printf(ndev, "Unknown RX CQE type = %d\n", 1682 oob->cqe_hdr.cqe_type); 1683 return; 1684 } 1685 1686 if (oob->cqe_hdr.cqe_type != CQE_RX_OKAY) 1687 return; 1688 1689 pktlen = oob->ppi[0].pkt_len; 1690 1691 if (pktlen == 0) { 1692 /* data packets should never have packetlength of zero */ 1693 if_printf(ndev, "RX pkt len=0, rq=%u, cq=%u, rxobj=0x%jx\n", 1694 rxq->gdma_id, cq->gdma_id, rxq->rxobj); 1695 return; 1696 } 1697 1698 curr = rxq->buf_index; 1699 rxbuf_oob = &rxq->rx_oobs[curr]; 1700 if (rxbuf_oob->wqe_inf.wqe_size_in_bu != 1) { 1701 mana_err(NULL, "WARNING: Rx Incorrect complete " 1702 "WQE size %u\n", 1703 rxbuf_oob->wqe_inf.wqe_size_in_bu); 1704 } 1705 1706 apc = if_getsoftc(ndev); 1707 1708 old_mbuf = rxbuf_oob->mbuf; 1709 1710 /* Unload DMA map for the old mbuf */ 1711 mana_unload_rx_mbuf(apc, rxq, rxbuf_oob, false); 1712 1713 /* Load a new mbuf to replace the old one */ 1714 err = mana_load_rx_mbuf(apc, rxq, rxbuf_oob, true); 1715 if (err) { 1716 mana_dbg(NULL, 1717 "failed to load rx mbuf, err = %d, packet dropped.\n", 1718 err); 1719 counter_u64_add(rxq->stats.mbuf_alloc_fail, 1); 1720 /* 1721 * Failed to load new mbuf, rxbuf_oob->mbuf is still 1722 * pointing to the old one. Drop the packet. 1723 */ 1724 old_mbuf = NULL; 1725 /* Reload the existing mbuf */ 1726 mana_load_rx_mbuf(apc, rxq, rxbuf_oob, false); 1727 } 1728 1729 mana_rx_mbuf(old_mbuf, oob, rxq); 1730 1731 drop: 1732 mana_move_wq_tail(rxq->gdma_rq, rxbuf_oob->wqe_inf.wqe_size_in_bu); 1733 1734 mana_post_pkt_rxq(rxq); 1735 } 1736 1737 static void 1738 mana_poll_rx_cq(struct mana_cq *cq) 1739 { 1740 struct gdma_comp *comp = cq->gdma_comp_buf; 1741 int comp_read, i; 1742 1743 comp_read = mana_gd_poll_cq(cq->gdma_cq, comp, CQE_POLLING_BUFFER); 1744 KASSERT(comp_read <= CQE_POLLING_BUFFER, 1745 ("comp_read %d great than buf size %d", 1746 comp_read, CQE_POLLING_BUFFER)); 1747 1748 for (i = 0; i < comp_read; i++) { 1749 if (comp[i].is_sq == true) { 1750 mana_err(NULL, 1751 "WARNING: CQE not for receive queue\n"); 1752 return; 1753 } 1754 1755 /* verify recv cqe references the right rxq */ 1756 if (comp[i].wq_num != cq->rxq->gdma_id) { 1757 mana_err(NULL, 1758 "WARNING: Received CQE %d not for " 1759 "this receive queue %d\n", 1760 comp[i].wq_num, cq->rxq->gdma_id); 1761 return; 1762 } 1763 1764 mana_process_rx_cqe(cq->rxq, cq, &comp[i]); 1765 } 1766 1767 tcp_lro_flush_all(&cq->rxq->lro); 1768 } 1769 1770 static void 1771 mana_cq_handler(void *context, struct gdma_queue *gdma_queue) 1772 { 1773 struct mana_cq *cq = context; 1774 uint8_t arm_bit; 1775 1776 KASSERT(cq->gdma_cq == gdma_queue, 1777 ("cq do not match %p, %p", cq->gdma_cq, gdma_queue)); 1778 1779 if (cq->type == MANA_CQ_TYPE_RX) { 1780 mana_poll_rx_cq(cq); 1781 } else { 1782 mana_poll_tx_cq(cq); 1783 } 1784 1785 if (cq->work_done < cq->budget && cq->do_not_ring_db == false) 1786 arm_bit = SET_ARM_BIT; 1787 else 1788 arm_bit = 0; 1789 1790 mana_gd_ring_cq(gdma_queue, arm_bit); 1791 } 1792 1793 #define MANA_POLL_BUDGET 8 1794 #define MANA_RX_BUDGET 256 1795 #define MANA_TX_BUDGET MAX_SEND_BUFFERS_PER_QUEUE 1796 1797 static void 1798 mana_poll(void *arg, int pending) 1799 { 1800 struct mana_cq *cq = arg; 1801 int i; 1802 1803 cq->work_done = 0; 1804 if (cq->type == MANA_CQ_TYPE_RX) { 1805 cq->budget = MANA_RX_BUDGET; 1806 } else { 1807 cq->budget = MANA_TX_BUDGET; 1808 } 1809 1810 for (i = 0; i < MANA_POLL_BUDGET; i++) { 1811 /* 1812 * If this is the last loop, set the budget big enough 1813 * so it will arm the CQ any way. 1814 */ 1815 if (i == (MANA_POLL_BUDGET - 1)) 1816 cq->budget = CQE_POLLING_BUFFER + 1; 1817 1818 mana_cq_handler(cq, cq->gdma_cq); 1819 1820 if (cq->work_done < cq->budget) 1821 break; 1822 1823 cq->work_done = 0; 1824 } 1825 } 1826 1827 static void 1828 mana_schedule_task(void *arg, struct gdma_queue *gdma_queue) 1829 { 1830 struct mana_cq *cq = arg; 1831 1832 taskqueue_enqueue(cq->cleanup_tq, &cq->cleanup_task); 1833 } 1834 1835 static void 1836 mana_deinit_cq(struct mana_port_context *apc, struct mana_cq *cq) 1837 { 1838 struct gdma_dev *gd = apc->ac->gdma_dev; 1839 1840 if (!cq->gdma_cq) 1841 return; 1842 1843 /* Drain cleanup taskqueue */ 1844 if (cq->cleanup_tq) { 1845 while (taskqueue_cancel(cq->cleanup_tq, 1846 &cq->cleanup_task, NULL)) { 1847 taskqueue_drain(cq->cleanup_tq, 1848 &cq->cleanup_task); 1849 } 1850 1851 taskqueue_free(cq->cleanup_tq); 1852 } 1853 1854 mana_gd_destroy_queue(gd->gdma_context, cq->gdma_cq); 1855 } 1856 1857 static void 1858 mana_deinit_txq(struct mana_port_context *apc, struct mana_txq *txq) 1859 { 1860 struct gdma_dev *gd = apc->ac->gdma_dev; 1861 struct mana_send_buf_info *txbuf_info; 1862 uint32_t pending_sends; 1863 int i; 1864 1865 if (!txq->gdma_sq) 1866 return; 1867 1868 if ((pending_sends = atomic_read(&txq->pending_sends)) > 0) { 1869 mana_err(NULL, 1870 "WARNING: txq pending sends not zero: %u\n", 1871 pending_sends); 1872 } 1873 1874 if (txq->next_to_use != txq->next_to_complete) { 1875 mana_err(NULL, 1876 "WARNING: txq buf not completed, " 1877 "next use %u, next complete %u\n", 1878 txq->next_to_use, txq->next_to_complete); 1879 } 1880 1881 /* Flush buf ring. Grab txq mtx lock */ 1882 if (txq->txq_br) { 1883 mtx_lock(&txq->txq_mtx); 1884 drbr_flush(apc->ndev, txq->txq_br); 1885 mtx_unlock(&txq->txq_mtx); 1886 buf_ring_free(txq->txq_br, M_DEVBUF); 1887 } 1888 1889 /* Drain taskqueue */ 1890 if (txq->enqueue_tq) { 1891 while (taskqueue_cancel(txq->enqueue_tq, 1892 &txq->enqueue_task, NULL)) { 1893 taskqueue_drain(txq->enqueue_tq, 1894 &txq->enqueue_task); 1895 } 1896 1897 taskqueue_free(txq->enqueue_tq); 1898 } 1899 1900 if (txq->tx_buf_info) { 1901 /* Free all mbufs which are still in-flight */ 1902 for (i = 0; i < MAX_SEND_BUFFERS_PER_QUEUE; i++) { 1903 txbuf_info = &txq->tx_buf_info[i]; 1904 if (txbuf_info->mbuf) { 1905 mana_tx_unmap_mbuf(apc, txbuf_info); 1906 } 1907 } 1908 1909 free(txq->tx_buf_info, M_DEVBUF); 1910 } 1911 1912 mana_free_counters((counter_u64_t *)&txq->stats, 1913 sizeof(txq->stats)); 1914 1915 mana_gd_destroy_queue(gd->gdma_context, txq->gdma_sq); 1916 1917 mtx_destroy(&txq->txq_mtx); 1918 } 1919 1920 static void 1921 mana_destroy_txq(struct mana_port_context *apc) 1922 { 1923 int i; 1924 1925 if (!apc->tx_qp) 1926 return; 1927 1928 for (i = 0; i < apc->num_queues; i++) { 1929 mana_destroy_wq_obj(apc, GDMA_SQ, apc->tx_qp[i].tx_object); 1930 1931 mana_deinit_cq(apc, &apc->tx_qp[i].tx_cq); 1932 1933 mana_deinit_txq(apc, &apc->tx_qp[i].txq); 1934 } 1935 1936 free(apc->tx_qp, M_DEVBUF); 1937 apc->tx_qp = NULL; 1938 } 1939 1940 static int 1941 mana_create_txq(struct mana_port_context *apc, struct ifnet *net) 1942 { 1943 struct mana_context *ac = apc->ac; 1944 struct gdma_dev *gd = ac->gdma_dev; 1945 struct mana_obj_spec wq_spec; 1946 struct mana_obj_spec cq_spec; 1947 struct gdma_queue_spec spec; 1948 struct gdma_context *gc; 1949 struct mana_txq *txq; 1950 struct mana_cq *cq; 1951 uint32_t txq_size; 1952 uint32_t cq_size; 1953 int err; 1954 int i; 1955 1956 apc->tx_qp = mallocarray(apc->num_queues, sizeof(struct mana_tx_qp), 1957 M_DEVBUF, M_WAITOK | M_ZERO); 1958 if (!apc->tx_qp) 1959 return ENOMEM; 1960 1961 /* The minimum size of the WQE is 32 bytes, hence 1962 * MAX_SEND_BUFFERS_PER_QUEUE represents the maximum number of WQEs 1963 * the SQ can store. This value is then used to size other queues 1964 * to prevent overflow. 1965 */ 1966 txq_size = MAX_SEND_BUFFERS_PER_QUEUE * 32; 1967 KASSERT(IS_ALIGNED(txq_size, PAGE_SIZE), 1968 ("txq size not page aligned")); 1969 1970 cq_size = MAX_SEND_BUFFERS_PER_QUEUE * COMP_ENTRY_SIZE; 1971 cq_size = ALIGN(cq_size, PAGE_SIZE); 1972 1973 gc = gd->gdma_context; 1974 1975 for (i = 0; i < apc->num_queues; i++) { 1976 apc->tx_qp[i].tx_object = INVALID_MANA_HANDLE; 1977 1978 /* Create SQ */ 1979 txq = &apc->tx_qp[i].txq; 1980 1981 txq->ndev = net; 1982 txq->vp_offset = apc->tx_vp_offset; 1983 txq->idx = i; 1984 txq->alt_txq_idx = i; 1985 1986 memset(&spec, 0, sizeof(spec)); 1987 spec.type = GDMA_SQ; 1988 spec.monitor_avl_buf = true; 1989 spec.queue_size = txq_size; 1990 err = mana_gd_create_mana_wq_cq(gd, &spec, &txq->gdma_sq); 1991 if (err) 1992 goto out; 1993 1994 /* Create SQ's CQ */ 1995 cq = &apc->tx_qp[i].tx_cq; 1996 cq->type = MANA_CQ_TYPE_TX; 1997 1998 cq->txq = txq; 1999 2000 memset(&spec, 0, sizeof(spec)); 2001 spec.type = GDMA_CQ; 2002 spec.monitor_avl_buf = false; 2003 spec.queue_size = cq_size; 2004 spec.cq.callback = mana_schedule_task; 2005 spec.cq.parent_eq = ac->eqs[i].eq; 2006 spec.cq.context = cq; 2007 err = mana_gd_create_mana_wq_cq(gd, &spec, &cq->gdma_cq); 2008 if (err) 2009 goto out; 2010 2011 memset(&wq_spec, 0, sizeof(wq_spec)); 2012 memset(&cq_spec, 0, sizeof(cq_spec)); 2013 2014 wq_spec.gdma_region = txq->gdma_sq->mem_info.dma_region_handle; 2015 wq_spec.queue_size = txq->gdma_sq->queue_size; 2016 2017 cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle; 2018 cq_spec.queue_size = cq->gdma_cq->queue_size; 2019 cq_spec.modr_ctx_id = 0; 2020 cq_spec.attached_eq = cq->gdma_cq->cq.parent->id; 2021 2022 err = mana_create_wq_obj(apc, apc->port_handle, GDMA_SQ, 2023 &wq_spec, &cq_spec, &apc->tx_qp[i].tx_object); 2024 2025 if (err) 2026 goto out; 2027 2028 txq->gdma_sq->id = wq_spec.queue_index; 2029 cq->gdma_cq->id = cq_spec.queue_index; 2030 2031 txq->gdma_sq->mem_info.dma_region_handle = 2032 GDMA_INVALID_DMA_REGION; 2033 cq->gdma_cq->mem_info.dma_region_handle = 2034 GDMA_INVALID_DMA_REGION; 2035 2036 txq->gdma_txq_id = txq->gdma_sq->id; 2037 2038 cq->gdma_id = cq->gdma_cq->id; 2039 2040 mana_dbg(NULL, 2041 "txq %d, txq gdma id %d, txq cq gdma id %d\n", 2042 i, txq->gdma_txq_id, cq->gdma_id);; 2043 2044 if (cq->gdma_id >= gc->max_num_cqs) { 2045 if_printf(net, "CQ id %u too large.\n", cq->gdma_id); 2046 err = EINVAL; 2047 goto out; 2048 } 2049 2050 gc->cq_table[cq->gdma_id] = cq->gdma_cq; 2051 2052 /* Initialize tx specific data */ 2053 txq->tx_buf_info = malloc(MAX_SEND_BUFFERS_PER_QUEUE * 2054 sizeof(struct mana_send_buf_info), 2055 M_DEVBUF, M_WAITOK | M_ZERO); 2056 if (unlikely(txq->tx_buf_info == NULL)) { 2057 if_printf(net, 2058 "Failed to allocate tx buf info for SQ %u\n", 2059 txq->gdma_sq->id); 2060 err = ENOMEM; 2061 goto out; 2062 } 2063 2064 2065 snprintf(txq->txq_mtx_name, nitems(txq->txq_mtx_name), 2066 "mana:tx(%d)", i); 2067 mtx_init(&txq->txq_mtx, txq->txq_mtx_name, NULL, MTX_DEF); 2068 2069 txq->txq_br = buf_ring_alloc(4 * MAX_SEND_BUFFERS_PER_QUEUE, 2070 M_DEVBUF, M_WAITOK, &txq->txq_mtx); 2071 if (unlikely(txq->txq_br == NULL)) { 2072 if_printf(net, 2073 "Failed to allocate buf ring for SQ %u\n", 2074 txq->gdma_sq->id); 2075 err = ENOMEM; 2076 goto out; 2077 } 2078 2079 /* Allocate taskqueue for deferred send */ 2080 TASK_INIT(&txq->enqueue_task, 0, mana_xmit_taskfunc, txq); 2081 txq->enqueue_tq = taskqueue_create_fast("mana_tx_enque", 2082 M_NOWAIT, taskqueue_thread_enqueue, &txq->enqueue_tq); 2083 if (unlikely(txq->enqueue_tq == NULL)) { 2084 if_printf(net, 2085 "Unable to create tx %d enqueue task queue\n", i); 2086 err = ENOMEM; 2087 goto out; 2088 } 2089 taskqueue_start_threads(&txq->enqueue_tq, 1, PI_NET, 2090 "mana txq p%u-tx%d", apc->port_idx, i); 2091 2092 mana_alloc_counters((counter_u64_t *)&txq->stats, 2093 sizeof(txq->stats)); 2094 2095 /* Allocate and start the cleanup task on CQ */ 2096 cq->do_not_ring_db = false; 2097 2098 NET_TASK_INIT(&cq->cleanup_task, 0, mana_poll, cq); 2099 cq->cleanup_tq = 2100 taskqueue_create_fast("mana tx cq cleanup", 2101 M_WAITOK, taskqueue_thread_enqueue, 2102 &cq->cleanup_tq); 2103 2104 if (apc->last_tx_cq_bind_cpu < 0) 2105 apc->last_tx_cq_bind_cpu = CPU_FIRST(); 2106 cq->cpu = apc->last_tx_cq_bind_cpu; 2107 apc->last_tx_cq_bind_cpu = CPU_NEXT(apc->last_tx_cq_bind_cpu); 2108 2109 if (apc->bind_cleanup_thread_cpu) { 2110 cpuset_t cpu_mask; 2111 CPU_SETOF(cq->cpu, &cpu_mask); 2112 taskqueue_start_threads_cpuset(&cq->cleanup_tq, 2113 1, PI_NET, &cpu_mask, 2114 "mana cq p%u-tx%u-cpu%d", 2115 apc->port_idx, txq->idx, cq->cpu); 2116 } else { 2117 taskqueue_start_threads(&cq->cleanup_tq, 1, 2118 PI_NET, "mana cq p%u-tx%u", 2119 apc->port_idx, txq->idx); 2120 } 2121 2122 mana_gd_ring_cq(cq->gdma_cq, SET_ARM_BIT); 2123 } 2124 2125 return 0; 2126 out: 2127 mana_destroy_txq(apc); 2128 return err; 2129 } 2130 2131 static void 2132 mana_destroy_rxq(struct mana_port_context *apc, struct mana_rxq *rxq, 2133 bool validate_state) 2134 { 2135 struct gdma_context *gc = apc->ac->gdma_dev->gdma_context; 2136 struct mana_recv_buf_oob *rx_oob; 2137 int i; 2138 2139 if (!rxq) 2140 return; 2141 2142 if (validate_state) { 2143 /* 2144 * XXX Cancel and drain cleanup task queue here. 2145 */ 2146 ; 2147 } 2148 2149 mana_destroy_wq_obj(apc, GDMA_RQ, rxq->rxobj); 2150 2151 mana_deinit_cq(apc, &rxq->rx_cq); 2152 2153 mana_free_counters((counter_u64_t *)&rxq->stats, 2154 sizeof(rxq->stats)); 2155 2156 /* Free LRO resources */ 2157 tcp_lro_free(&rxq->lro); 2158 2159 for (i = 0; i < rxq->num_rx_buf; i++) { 2160 rx_oob = &rxq->rx_oobs[i]; 2161 2162 if (rx_oob->mbuf) 2163 mana_unload_rx_mbuf(apc, rxq, rx_oob, true); 2164 2165 bus_dmamap_destroy(apc->rx_buf_tag, rx_oob->dma_map); 2166 } 2167 2168 if (rxq->gdma_rq) 2169 mana_gd_destroy_queue(gc, rxq->gdma_rq); 2170 2171 free(rxq, M_DEVBUF); 2172 } 2173 2174 #define MANA_WQE_HEADER_SIZE 16 2175 #define MANA_WQE_SGE_SIZE 16 2176 2177 static int 2178 mana_alloc_rx_wqe(struct mana_port_context *apc, 2179 struct mana_rxq *rxq, uint32_t *rxq_size, uint32_t *cq_size) 2180 { 2181 struct mana_recv_buf_oob *rx_oob; 2182 uint32_t buf_idx; 2183 int err; 2184 2185 if (rxq->datasize == 0 || rxq->datasize > PAGE_SIZE) { 2186 mana_err(NULL, 2187 "WARNING: Invalid rxq datasize %u\n", rxq->datasize); 2188 } 2189 2190 *rxq_size = 0; 2191 *cq_size = 0; 2192 2193 for (buf_idx = 0; buf_idx < rxq->num_rx_buf; buf_idx++) { 2194 rx_oob = &rxq->rx_oobs[buf_idx]; 2195 memset(rx_oob, 0, sizeof(*rx_oob)); 2196 2197 err = bus_dmamap_create(apc->rx_buf_tag, 0, 2198 &rx_oob->dma_map); 2199 if (err) { 2200 mana_err(NULL, 2201 "Failed to create rx DMA map for buf %d\n", 2202 buf_idx); 2203 return err; 2204 } 2205 2206 err = mana_load_rx_mbuf(apc, rxq, rx_oob, true); 2207 if (err) { 2208 mana_err(NULL, 2209 "Failed to create rx DMA map for buf %d\n", 2210 buf_idx); 2211 bus_dmamap_destroy(apc->rx_buf_tag, rx_oob->dma_map); 2212 return err; 2213 } 2214 2215 rx_oob->wqe_req.sgl = rx_oob->sgl; 2216 rx_oob->wqe_req.num_sge = rx_oob->num_sge; 2217 rx_oob->wqe_req.inline_oob_size = 0; 2218 rx_oob->wqe_req.inline_oob_data = NULL; 2219 rx_oob->wqe_req.flags = 0; 2220 rx_oob->wqe_req.client_data_unit = 0; 2221 2222 *rxq_size += ALIGN(MANA_WQE_HEADER_SIZE + 2223 MANA_WQE_SGE_SIZE * rx_oob->num_sge, 32); 2224 *cq_size += COMP_ENTRY_SIZE; 2225 } 2226 2227 return 0; 2228 } 2229 2230 static int 2231 mana_push_wqe(struct mana_rxq *rxq) 2232 { 2233 struct mana_recv_buf_oob *rx_oob; 2234 uint32_t buf_idx; 2235 int err; 2236 2237 for (buf_idx = 0; buf_idx < rxq->num_rx_buf; buf_idx++) { 2238 rx_oob = &rxq->rx_oobs[buf_idx]; 2239 2240 err = mana_gd_post_and_ring(rxq->gdma_rq, &rx_oob->wqe_req, 2241 &rx_oob->wqe_inf); 2242 if (err) 2243 return ENOSPC; 2244 } 2245 2246 return 0; 2247 } 2248 2249 static struct mana_rxq * 2250 mana_create_rxq(struct mana_port_context *apc, uint32_t rxq_idx, 2251 struct mana_eq *eq, struct ifnet *ndev) 2252 { 2253 struct gdma_dev *gd = apc->ac->gdma_dev; 2254 struct mana_obj_spec wq_spec; 2255 struct mana_obj_spec cq_spec; 2256 struct gdma_queue_spec spec; 2257 struct mana_cq *cq = NULL; 2258 uint32_t cq_size, rq_size; 2259 struct gdma_context *gc; 2260 struct mana_rxq *rxq; 2261 int err; 2262 2263 gc = gd->gdma_context; 2264 2265 rxq = malloc(sizeof(*rxq) + 2266 RX_BUFFERS_PER_QUEUE * sizeof(struct mana_recv_buf_oob), 2267 M_DEVBUF, M_WAITOK | M_ZERO); 2268 if (!rxq) 2269 return NULL; 2270 2271 rxq->ndev = ndev; 2272 rxq->num_rx_buf = RX_BUFFERS_PER_QUEUE; 2273 rxq->rxq_idx = rxq_idx; 2274 /* 2275 * Minimum size is MCLBYTES(2048) bytes for a mbuf cluster. 2276 * Now we just allow maximum size of 4096. 2277 */ 2278 rxq->datasize = ALIGN(apc->frame_size, MCLBYTES); 2279 if (rxq->datasize > MAX_FRAME_SIZE) 2280 rxq->datasize = MAX_FRAME_SIZE; 2281 2282 mana_dbg(NULL, "Setting rxq %d datasize %d\n", 2283 rxq_idx, rxq->datasize); 2284 2285 rxq->rxobj = INVALID_MANA_HANDLE; 2286 2287 err = mana_alloc_rx_wqe(apc, rxq, &rq_size, &cq_size); 2288 if (err) 2289 goto out; 2290 2291 /* Create LRO for the RQ */ 2292 if (ndev->if_capenable & IFCAP_LRO) { 2293 err = tcp_lro_init(&rxq->lro); 2294 if (err) { 2295 if_printf(ndev, "Failed to create LRO for rxq %d\n", 2296 rxq_idx); 2297 } else { 2298 rxq->lro.ifp = ndev; 2299 } 2300 } 2301 2302 mana_alloc_counters((counter_u64_t *)&rxq->stats, 2303 sizeof(rxq->stats)); 2304 2305 rq_size = ALIGN(rq_size, PAGE_SIZE); 2306 cq_size = ALIGN(cq_size, PAGE_SIZE); 2307 2308 /* Create RQ */ 2309 memset(&spec, 0, sizeof(spec)); 2310 spec.type = GDMA_RQ; 2311 spec.monitor_avl_buf = true; 2312 spec.queue_size = rq_size; 2313 err = mana_gd_create_mana_wq_cq(gd, &spec, &rxq->gdma_rq); 2314 if (err) 2315 goto out; 2316 2317 /* Create RQ's CQ */ 2318 cq = &rxq->rx_cq; 2319 cq->type = MANA_CQ_TYPE_RX; 2320 cq->rxq = rxq; 2321 2322 memset(&spec, 0, sizeof(spec)); 2323 spec.type = GDMA_CQ; 2324 spec.monitor_avl_buf = false; 2325 spec.queue_size = cq_size; 2326 spec.cq.callback = mana_schedule_task; 2327 spec.cq.parent_eq = eq->eq; 2328 spec.cq.context = cq; 2329 err = mana_gd_create_mana_wq_cq(gd, &spec, &cq->gdma_cq); 2330 if (err) 2331 goto out; 2332 2333 memset(&wq_spec, 0, sizeof(wq_spec)); 2334 memset(&cq_spec, 0, sizeof(cq_spec)); 2335 wq_spec.gdma_region = rxq->gdma_rq->mem_info.dma_region_handle; 2336 wq_spec.queue_size = rxq->gdma_rq->queue_size; 2337 2338 cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle; 2339 cq_spec.queue_size = cq->gdma_cq->queue_size; 2340 cq_spec.modr_ctx_id = 0; 2341 cq_spec.attached_eq = cq->gdma_cq->cq.parent->id; 2342 2343 err = mana_create_wq_obj(apc, apc->port_handle, GDMA_RQ, 2344 &wq_spec, &cq_spec, &rxq->rxobj); 2345 if (err) 2346 goto out; 2347 2348 rxq->gdma_rq->id = wq_spec.queue_index; 2349 cq->gdma_cq->id = cq_spec.queue_index; 2350 2351 rxq->gdma_rq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION; 2352 cq->gdma_cq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION; 2353 2354 rxq->gdma_id = rxq->gdma_rq->id; 2355 cq->gdma_id = cq->gdma_cq->id; 2356 2357 err = mana_push_wqe(rxq); 2358 if (err) 2359 goto out; 2360 2361 if (cq->gdma_id >= gc->max_num_cqs) { 2362 err = EINVAL; 2363 goto out; 2364 } 2365 2366 gc->cq_table[cq->gdma_id] = cq->gdma_cq; 2367 2368 /* Allocate and start the cleanup task on CQ */ 2369 cq->do_not_ring_db = false; 2370 2371 NET_TASK_INIT(&cq->cleanup_task, 0, mana_poll, cq); 2372 cq->cleanup_tq = 2373 taskqueue_create_fast("mana rx cq cleanup", 2374 M_WAITOK, taskqueue_thread_enqueue, 2375 &cq->cleanup_tq); 2376 2377 if (apc->last_rx_cq_bind_cpu < 0) 2378 apc->last_rx_cq_bind_cpu = CPU_FIRST(); 2379 cq->cpu = apc->last_rx_cq_bind_cpu; 2380 apc->last_rx_cq_bind_cpu = CPU_NEXT(apc->last_rx_cq_bind_cpu); 2381 2382 if (apc->bind_cleanup_thread_cpu) { 2383 cpuset_t cpu_mask; 2384 CPU_SETOF(cq->cpu, &cpu_mask); 2385 taskqueue_start_threads_cpuset(&cq->cleanup_tq, 2386 1, PI_NET, &cpu_mask, 2387 "mana cq p%u-rx%u-cpu%d", 2388 apc->port_idx, rxq->rxq_idx, cq->cpu); 2389 } else { 2390 taskqueue_start_threads(&cq->cleanup_tq, 1, 2391 PI_NET, "mana cq p%u-rx%u", 2392 apc->port_idx, rxq->rxq_idx); 2393 } 2394 2395 mana_gd_ring_cq(cq->gdma_cq, SET_ARM_BIT); 2396 out: 2397 if (!err) 2398 return rxq; 2399 2400 if_printf(ndev, "Failed to create RXQ: err = %d\n", err); 2401 2402 mana_destroy_rxq(apc, rxq, false); 2403 2404 if (cq) 2405 mana_deinit_cq(apc, cq); 2406 2407 return NULL; 2408 } 2409 2410 static int 2411 mana_add_rx_queues(struct mana_port_context *apc, struct ifnet *ndev) 2412 { 2413 struct mana_context *ac = apc->ac; 2414 struct mana_rxq *rxq; 2415 int err = 0; 2416 int i; 2417 2418 for (i = 0; i < apc->num_queues; i++) { 2419 rxq = mana_create_rxq(apc, i, &ac->eqs[i], ndev); 2420 if (!rxq) { 2421 err = ENOMEM; 2422 goto out; 2423 } 2424 2425 apc->rxqs[i] = rxq; 2426 } 2427 2428 apc->default_rxobj = apc->rxqs[0]->rxobj; 2429 out: 2430 return err; 2431 } 2432 2433 static void 2434 mana_destroy_vport(struct mana_port_context *apc) 2435 { 2436 struct mana_rxq *rxq; 2437 uint32_t rxq_idx; 2438 2439 for (rxq_idx = 0; rxq_idx < apc->num_queues; rxq_idx++) { 2440 rxq = apc->rxqs[rxq_idx]; 2441 if (!rxq) 2442 continue; 2443 2444 mana_destroy_rxq(apc, rxq, true); 2445 apc->rxqs[rxq_idx] = NULL; 2446 } 2447 2448 mana_destroy_txq(apc); 2449 2450 mana_uncfg_vport(apc); 2451 } 2452 2453 static int 2454 mana_create_vport(struct mana_port_context *apc, struct ifnet *net) 2455 { 2456 struct gdma_dev *gd = apc->ac->gdma_dev; 2457 int err; 2458 2459 apc->default_rxobj = INVALID_MANA_HANDLE; 2460 2461 err = mana_cfg_vport(apc, gd->pdid, gd->doorbell); 2462 if (err) 2463 return err; 2464 2465 return mana_create_txq(apc, net); 2466 } 2467 2468 2469 static void mana_rss_table_init(struct mana_port_context *apc) 2470 { 2471 int i; 2472 2473 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) 2474 apc->indir_table[i] = i % apc->num_queues; 2475 } 2476 2477 int mana_config_rss(struct mana_port_context *apc, enum TRI_STATE rx, 2478 bool update_hash, bool update_tab) 2479 { 2480 uint32_t queue_idx; 2481 int err; 2482 int i; 2483 2484 if (update_tab) { 2485 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) { 2486 queue_idx = apc->indir_table[i]; 2487 apc->rxobj_table[i] = apc->rxqs[queue_idx]->rxobj; 2488 } 2489 } 2490 2491 err = mana_cfg_vport_steering(apc, rx, true, update_hash, update_tab); 2492 if (err) 2493 return err; 2494 2495 mana_fence_rqs(apc); 2496 2497 return 0; 2498 } 2499 2500 static int 2501 mana_init_port(struct ifnet *ndev) 2502 { 2503 struct mana_port_context *apc = if_getsoftc(ndev); 2504 uint32_t max_txq, max_rxq, max_queues; 2505 int port_idx = apc->port_idx; 2506 uint32_t num_indirect_entries; 2507 int err; 2508 2509 err = mana_init_port_context(apc); 2510 if (err) 2511 return err; 2512 2513 err = mana_query_vport_cfg(apc, port_idx, &max_txq, &max_rxq, 2514 &num_indirect_entries); 2515 if (err) { 2516 if_printf(ndev, "Failed to query info for vPort %d\n", 2517 port_idx); 2518 goto reset_apc; 2519 } 2520 2521 max_queues = min_t(uint32_t, max_txq, max_rxq); 2522 if (apc->max_queues > max_queues) 2523 apc->max_queues = max_queues; 2524 2525 if (apc->num_queues > apc->max_queues) 2526 apc->num_queues = apc->max_queues; 2527 2528 return 0; 2529 2530 reset_apc: 2531 bus_dma_tag_destroy(apc->rx_buf_tag); 2532 apc->rx_buf_tag = NULL; 2533 free(apc->rxqs, M_DEVBUF); 2534 apc->rxqs = NULL; 2535 return err; 2536 } 2537 2538 int 2539 mana_alloc_queues(struct ifnet *ndev) 2540 { 2541 struct mana_port_context *apc = if_getsoftc(ndev); 2542 int err; 2543 2544 err = mana_create_vport(apc, ndev); 2545 if (err) 2546 return err; 2547 2548 err = mana_add_rx_queues(apc, ndev); 2549 if (err) 2550 goto destroy_vport; 2551 2552 apc->rss_state = apc->num_queues > 1 ? TRI_STATE_TRUE : TRI_STATE_FALSE; 2553 2554 mana_rss_table_init(apc); 2555 2556 err = mana_config_rss(apc, TRI_STATE_TRUE, true, true); 2557 if (err) 2558 goto destroy_vport; 2559 2560 return 0; 2561 2562 destroy_vport: 2563 mana_destroy_vport(apc); 2564 return err; 2565 } 2566 2567 static int 2568 mana_up(struct mana_port_context *apc) 2569 { 2570 int err; 2571 2572 mana_dbg(NULL, "mana_up called\n"); 2573 2574 err = mana_alloc_queues(apc->ndev); 2575 if (err) { 2576 mana_err(NULL, "Faile alloc mana queues: %d\n", err); 2577 return err; 2578 } 2579 2580 /* Add queue specific sysctl */ 2581 mana_sysctl_add_queues(apc); 2582 2583 apc->port_is_up = true; 2584 2585 /* Ensure port state updated before txq state */ 2586 wmb(); 2587 2588 if_link_state_change(apc->ndev, LINK_STATE_UP); 2589 if_setdrvflagbits(apc->ndev, IFF_DRV_RUNNING, IFF_DRV_OACTIVE); 2590 2591 return 0; 2592 } 2593 2594 2595 static void 2596 mana_init(void *arg) 2597 { 2598 struct mana_port_context *apc = (struct mana_port_context *)arg; 2599 2600 MANA_APC_LOCK_LOCK(apc); 2601 if (!apc->port_is_up) { 2602 mana_up(apc); 2603 } 2604 MANA_APC_LOCK_UNLOCK(apc); 2605 } 2606 2607 static int 2608 mana_dealloc_queues(struct ifnet *ndev) 2609 { 2610 struct mana_port_context *apc = if_getsoftc(ndev); 2611 struct mana_txq *txq; 2612 int i, err; 2613 2614 if (apc->port_is_up) 2615 return EINVAL; 2616 2617 /* No packet can be transmitted now since apc->port_is_up is false. 2618 * There is still a tiny chance that mana_poll_tx_cq() can re-enable 2619 * a txq because it may not timely see apc->port_is_up being cleared 2620 * to false, but it doesn't matter since mana_start_xmit() drops any 2621 * new packets due to apc->port_is_up being false. 2622 * 2623 * Drain all the in-flight TX packets 2624 */ 2625 for (i = 0; i < apc->num_queues; i++) { 2626 txq = &apc->tx_qp[i].txq; 2627 2628 struct mana_cq *tx_cq = &apc->tx_qp[i].tx_cq; 2629 struct mana_cq *rx_cq = &(apc->rxqs[i]->rx_cq); 2630 2631 tx_cq->do_not_ring_db = true; 2632 rx_cq->do_not_ring_db = true; 2633 2634 /* Schedule a cleanup task */ 2635 taskqueue_enqueue(tx_cq->cleanup_tq, &tx_cq->cleanup_task); 2636 2637 while (atomic_read(&txq->pending_sends) > 0) 2638 usleep_range(1000, 2000); 2639 } 2640 2641 /* We're 100% sure the queues can no longer be woken up, because 2642 * we're sure now mana_poll_tx_cq() can't be running. 2643 */ 2644 2645 apc->rss_state = TRI_STATE_FALSE; 2646 err = mana_config_rss(apc, TRI_STATE_FALSE, false, false); 2647 if (err) { 2648 if_printf(ndev, "Failed to disable vPort: %d\n", err); 2649 return err; 2650 } 2651 2652 mana_destroy_vport(apc); 2653 2654 return 0; 2655 } 2656 2657 static int 2658 mana_down(struct mana_port_context *apc) 2659 { 2660 int err = 0; 2661 2662 apc->port_st_save = apc->port_is_up; 2663 apc->port_is_up = false; 2664 2665 /* Ensure port state updated before txq state */ 2666 wmb(); 2667 2668 if (apc->port_st_save) { 2669 if_setdrvflagbits(apc->ndev, IFF_DRV_OACTIVE, 2670 IFF_DRV_RUNNING); 2671 if_link_state_change(apc->ndev, LINK_STATE_DOWN); 2672 2673 mana_sysctl_free_queues(apc); 2674 2675 err = mana_dealloc_queues(apc->ndev); 2676 if (err) { 2677 if_printf(apc->ndev, 2678 "Failed to bring down mana interface: %d\n", err); 2679 } 2680 } 2681 2682 return err; 2683 } 2684 2685 int 2686 mana_detach(struct ifnet *ndev) 2687 { 2688 struct mana_port_context *apc = if_getsoftc(ndev); 2689 int err; 2690 2691 ether_ifdetach(ndev); 2692 2693 if (!apc) 2694 return 0; 2695 2696 MANA_APC_LOCK_LOCK(apc); 2697 err = mana_down(apc); 2698 MANA_APC_LOCK_UNLOCK(apc); 2699 2700 mana_cleanup_port_context(apc); 2701 2702 MANA_APC_LOCK_DESTROY(apc); 2703 2704 free(apc, M_DEVBUF); 2705 2706 return err; 2707 } 2708 2709 static int 2710 mana_probe_port(struct mana_context *ac, int port_idx, 2711 struct ifnet **ndev_storage) 2712 { 2713 struct gdma_context *gc = ac->gdma_dev->gdma_context; 2714 struct mana_port_context *apc; 2715 struct ifnet *ndev; 2716 int err; 2717 2718 ndev = if_alloc_dev(IFT_ETHER, gc->dev); 2719 if (!ndev) { 2720 mana_err(NULL, "Failed to allocate ifnet struct\n"); 2721 return ENOMEM; 2722 } 2723 2724 *ndev_storage = ndev; 2725 2726 apc = malloc(sizeof(*apc), M_DEVBUF, M_WAITOK | M_ZERO); 2727 if (!apc) { 2728 mana_err(NULL, "Failed to allocate port context\n"); 2729 err = ENOMEM; 2730 goto free_net; 2731 } 2732 2733 apc->ac = ac; 2734 apc->ndev = ndev; 2735 apc->max_queues = gc->max_num_queues; 2736 apc->num_queues = min_t(unsigned int, 2737 gc->max_num_queues, MANA_MAX_NUM_QUEUES); 2738 apc->port_handle = INVALID_MANA_HANDLE; 2739 apc->port_idx = port_idx; 2740 apc->frame_size = DEFAULT_FRAME_SIZE; 2741 apc->last_tx_cq_bind_cpu = -1; 2742 apc->last_rx_cq_bind_cpu = -1; 2743 apc->vport_use_count = 0; 2744 2745 MANA_APC_LOCK_INIT(apc); 2746 2747 if_initname(ndev, device_get_name(gc->dev), port_idx); 2748 if_setdev(ndev,gc->dev); 2749 if_setsoftc(ndev, apc); 2750 2751 if_setflags(ndev, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 2752 if_setinitfn(ndev, mana_init); 2753 if_settransmitfn(ndev, mana_start_xmit); 2754 if_setqflushfn(ndev, mana_qflush); 2755 if_setioctlfn(ndev, mana_ioctl); 2756 if_setgetcounterfn(ndev, mana_get_counter); 2757 2758 if_setmtu(ndev, ETHERMTU); 2759 if_setbaudrate(ndev, IF_Gbps(100)); 2760 2761 mana_rss_key_fill(apc->hashkey, MANA_HASH_KEY_SIZE); 2762 2763 err = mana_init_port(ndev); 2764 if (err) 2765 goto reset_apc; 2766 2767 ndev->if_capabilities |= IFCAP_TXCSUM | IFCAP_TXCSUM_IPV6; 2768 ndev->if_capabilities |= IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6; 2769 ndev->if_capabilities |= IFCAP_TSO4 | IFCAP_TSO6; 2770 2771 ndev->if_capabilities |= IFCAP_LRO | IFCAP_LINKSTATE; 2772 2773 /* Enable all available capabilities by default. */ 2774 ndev->if_capenable = ndev->if_capabilities; 2775 2776 /* TSO parameters */ 2777 ndev->if_hw_tsomax = MAX_MBUF_FRAGS * MANA_TSO_MAXSEG_SZ - 2778 (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN); 2779 ndev->if_hw_tsomaxsegcount = MAX_MBUF_FRAGS; 2780 ndev->if_hw_tsomaxsegsize = PAGE_SIZE; 2781 2782 ifmedia_init(&apc->media, IFM_IMASK, 2783 mana_ifmedia_change, mana_ifmedia_status); 2784 ifmedia_add(&apc->media, IFM_ETHER | IFM_AUTO, 0, NULL); 2785 ifmedia_set(&apc->media, IFM_ETHER | IFM_AUTO); 2786 2787 ether_ifattach(ndev, apc->mac_addr); 2788 2789 /* Initialize statistics */ 2790 mana_alloc_counters((counter_u64_t *)&apc->port_stats, 2791 sizeof(struct mana_port_stats)); 2792 mana_sysctl_add_port(apc); 2793 2794 /* Tell the stack that the interface is not active */ 2795 if_setdrvflagbits(ndev, IFF_DRV_OACTIVE, IFF_DRV_RUNNING); 2796 2797 return 0; 2798 2799 reset_apc: 2800 free(apc, M_DEVBUF); 2801 free_net: 2802 *ndev_storage = NULL; 2803 if_printf(ndev, "Failed to probe vPort %d: %d\n", port_idx, err); 2804 if_free(ndev); 2805 return err; 2806 } 2807 2808 int mana_probe(struct gdma_dev *gd) 2809 { 2810 struct gdma_context *gc = gd->gdma_context; 2811 device_t dev = gc->dev; 2812 struct mana_context *ac; 2813 int err; 2814 int i; 2815 2816 device_printf(dev, "%s protocol version: %d.%d.%d\n", DEVICE_NAME, 2817 MANA_MAJOR_VERSION, MANA_MINOR_VERSION, MANA_MICRO_VERSION); 2818 2819 err = mana_gd_register_device(gd); 2820 if (err) 2821 return err; 2822 2823 ac = malloc(sizeof(*ac), M_DEVBUF, M_WAITOK | M_ZERO); 2824 if (!ac) 2825 return ENOMEM; 2826 2827 ac->gdma_dev = gd; 2828 ac->num_ports = 1; 2829 gd->driver_data = ac; 2830 2831 err = mana_create_eq(ac); 2832 if (err) 2833 goto out; 2834 2835 err = mana_query_device_cfg(ac, MANA_MAJOR_VERSION, MANA_MINOR_VERSION, 2836 MANA_MICRO_VERSION, &ac->num_ports); 2837 if (err) 2838 goto out; 2839 2840 if (ac->num_ports > MAX_PORTS_IN_MANA_DEV) 2841 ac->num_ports = MAX_PORTS_IN_MANA_DEV; 2842 2843 for (i = 0; i < ac->num_ports; i++) { 2844 err = mana_probe_port(ac, i, &ac->ports[i]); 2845 if (err) { 2846 device_printf(dev, 2847 "Failed to probe mana port %d\n", i); 2848 break; 2849 } 2850 } 2851 2852 out: 2853 if (err) 2854 mana_remove(gd); 2855 2856 return err; 2857 } 2858 2859 void 2860 mana_remove(struct gdma_dev *gd) 2861 { 2862 struct gdma_context *gc = gd->gdma_context; 2863 struct mana_context *ac = gd->driver_data; 2864 device_t dev = gc->dev; 2865 struct ifnet *ndev; 2866 int i; 2867 2868 for (i = 0; i < ac->num_ports; i++) { 2869 ndev = ac->ports[i]; 2870 if (!ndev) { 2871 if (i == 0) 2872 device_printf(dev, "No net device to remove\n"); 2873 goto out; 2874 } 2875 2876 mana_detach(ndev); 2877 2878 if_free(ndev); 2879 } 2880 2881 mana_destroy_eq(ac); 2882 2883 out: 2884 mana_gd_deregister_device(gd); 2885 gd->driver_data = NULL; 2886 gd->gdma_context = NULL; 2887 free(ac, M_DEVBUF); 2888 }
Cache object: 10428ea34665d6b2e6c997ba6e30f414
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