drivers/net/dpaa/dpaa_rxtx.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  *   Copyright 2016 Freescale Semiconductor, Inc. All rights reserved.
   4  *   Copyright 2017 NXP
   5  *
   6  */
   7
   8 /* System headers */
   9 #include <inttypes.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <limits.h>
  13 #include <sched.h>
  14 #include <pthread.h>
  15
  16 #include <rte_byteorder.h>
  17 #include <rte_common.h>
  18 #include <rte_interrupts.h>
  19 #include <rte_log.h>
  20 #include <rte_debug.h>
  21 #include <rte_pci.h>
  22 #include <rte_atomic.h>
  23 #include <rte_branch_prediction.h>
  24 #include <rte_memory.h>
  25 #include <rte_tailq.h>
  26 #include <rte_eal.h>
  27 #include <rte_alarm.h>
  28 #include <rte_ether.h>
  29 #include <rte_ethdev.h>
  30 #include <rte_malloc.h>
  31 #include <rte_ring.h>
  32 #include <rte_ip.h>
  33 #include <rte_tcp.h>
  34 #include <rte_udp.h>
  35 #include <rte_net.h>
  36
  37 #include "dpaa_ethdev.h"
  38 #include "dpaa_rxtx.h"
  39 #include <rte_dpaa_bus.h>
  40 #include <dpaa_mempool.h>
  41
  42 #include <fsl_usd.h>
  43 #include <fsl_qman.h>
  44 #include <fsl_bman.h>
  45 #include <of.h>
  46 #include <netcfg.h>
  47
  48 #define DPAA_MBUF_TO_CONTIG_FD(_mbuf, _fd, _bpid) \
  49         do { \
  50                 (_fd)->cmd = 0; \
  51                 (_fd)->opaque_addr = 0; \
  52                 (_fd)->opaque = QM_FD_CONTIG << DPAA_FD_FORMAT_SHIFT; \
  53                 (_fd)->opaque |= ((_mbuf)->data_off) << DPAA_FD_OFFSET_SHIFT; \
  54                 (_fd)->opaque |= (_mbuf)->pkt_len; \
  55                 (_fd)->addr = (_mbuf)->buf_iova; \
  56                 (_fd)->bpid = _bpid; \
  57         } while (0)
  58
  59 #if (defined RTE_LIBRTE_DPAA_DEBUG_DRIVER)
  60 void dpaa_display_frame(const struct qm_fd *fd)
  61 {
  62         int ii;
  63         char *ptr;
  64
  65         printf("%s::bpid %x addr %08x%08x, format %d off %d, len %d stat %x\n",
  66                __func__, fd->bpid, fd->addr_hi, fd->addr_lo, fd->format,
  67                 fd->offset, fd->length20, fd->status);
  68
  69         ptr = (char *)rte_dpaa_mem_ptov(fd->addr);
  70         ptr += fd->offset;
  71         printf("%02x ", *ptr);
  72         for (ii = 1; ii < fd->length20; ii++) {
  73                 printf("%02x ", *ptr);
  74                 if ((ii % 16) == 0)
  75                         printf("\n");
  76                 ptr++;
  77         }
  78         printf("\n");
  79 }
  80 #else
  81 #define dpaa_display_frame(a)
  82 #endif
  83
  84 static inline void dpaa_slow_parsing(struct rte_mbuf *m __rte_unused,
  85                                      uint64_t prs __rte_unused)
  86 {
  87         DPAA_DP_LOG(DEBUG, "Slow parsing");
  88         /*TBD:XXX: to be implemented*/
  89 }
  90
  91 static inline void dpaa_eth_packet_info(struct rte_mbuf *m,
  92                                         uint64_t fd_virt_addr)
  93 {
  94         struct annotations_t *annot = GET_ANNOTATIONS(fd_virt_addr);
  95         uint64_t prs = *((uint64_t *)(&annot->parse)) & DPAA_PARSE_MASK;
  96
  97         DPAA_DP_LOG(DEBUG, " Parsing mbuf: %p with annotations: %p", m, annot);
  98
  99         switch (prs) {
 100         case DPAA_PKT_TYPE_IPV4:
 101                 m->packet_type = RTE_PTYPE_L2_ETHER |
 102                         RTE_PTYPE_L3_IPV4;
 103                 break;
 104         case DPAA_PKT_TYPE_IPV6:
 105                 m->packet_type = RTE_PTYPE_L2_ETHER |
 106                         RTE_PTYPE_L3_IPV6;
 107                 break;
 108         case DPAA_PKT_TYPE_ETHER:
 109                 m->packet_type = RTE_PTYPE_L2_ETHER;
 110                 break;
 111         case DPAA_PKT_TYPE_IPV4_FRAG:
 112         case DPAA_PKT_TYPE_IPV4_FRAG_UDP:
 113         case DPAA_PKT_TYPE_IPV4_FRAG_TCP:
 114         case DPAA_PKT_TYPE_IPV4_FRAG_SCTP:
 115                 m->packet_type = RTE_PTYPE_L2_ETHER |
 116                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG;
 117                 break;
 118         case DPAA_PKT_TYPE_IPV6_FRAG:
 119         case DPAA_PKT_TYPE_IPV6_FRAG_UDP:
 120         case DPAA_PKT_TYPE_IPV6_FRAG_TCP:
 121         case DPAA_PKT_TYPE_IPV6_FRAG_SCTP:
 122                 m->packet_type = RTE_PTYPE_L2_ETHER |
 123                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG;
 124                 break;
 125         case DPAA_PKT_TYPE_IPV4_EXT:
 126                 m->packet_type = RTE_PTYPE_L2_ETHER |
 127                         RTE_PTYPE_L3_IPV4_EXT;
 128                 break;
 129         case DPAA_PKT_TYPE_IPV6_EXT:
 130                 m->packet_type = RTE_PTYPE_L2_ETHER |
 131                         RTE_PTYPE_L3_IPV6_EXT;
 132                 break;
 133         case DPAA_PKT_TYPE_IPV4_TCP:
 134                 m->packet_type = RTE_PTYPE_L2_ETHER |
 135                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP;
 136                 break;
 137         case DPAA_PKT_TYPE_IPV6_TCP:
 138                 m->packet_type = RTE_PTYPE_L2_ETHER |
 139                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
 140                 break;
 141         case DPAA_PKT_TYPE_IPV4_UDP:
 142                 m->packet_type = RTE_PTYPE_L2_ETHER |
 143                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP;
 144                 break;
 145         case DPAA_PKT_TYPE_IPV6_UDP:
 146                 m->packet_type = RTE_PTYPE_L2_ETHER |
 147                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
 148                 break;
 149         case DPAA_PKT_TYPE_IPV4_EXT_UDP:
 150                 m->packet_type = RTE_PTYPE_L2_ETHER |
 151                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP;
 152                 break;
 153         case DPAA_PKT_TYPE_IPV6_EXT_UDP:
 154                 m->packet_type = RTE_PTYPE_L2_ETHER |
 155                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP;
 156                 break;
 157         case DPAA_PKT_TYPE_IPV4_EXT_TCP:
 158                 m->packet_type = RTE_PTYPE_L2_ETHER |
 159                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP;
 160                 break;
 161         case DPAA_PKT_TYPE_IPV6_EXT_TCP:
 162                 m->packet_type = RTE_PTYPE_L2_ETHER |
 163                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP;
 164                 break;
 165         case DPAA_PKT_TYPE_IPV4_SCTP:
 166                 m->packet_type = RTE_PTYPE_L2_ETHER |
 167                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP;
 168                 break;
 169         case DPAA_PKT_TYPE_IPV6_SCTP:
 170                 m->packet_type = RTE_PTYPE_L2_ETHER |
 171                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_SCTP;
 172                 break;
 173         case DPAA_PKT_TYPE_NONE:
 174                 m->packet_type = 0;
 175                 break;
 176         /* More switch cases can be added */
 177         default:
 178                 dpaa_slow_parsing(m, prs);
 179         }
 180
 181         m->tx_offload = annot->parse.ip_off[0];
 182         m->tx_offload |= (annot->parse.l4_off - annot->parse.ip_off[0])
 183                                         << DPAA_PKT_L3_LEN_SHIFT;
 184
 185         /* Set the hash values */
 186         m->hash.rss = (uint32_t)(annot->hash);
 187         /* All packets with Bad checksum are dropped by interface (and
 188          * corresponding notification issued to RX error queues).
 189          */
 190         m->ol_flags = PKT_RX_RSS_HASH | PKT_RX_IP_CKSUM_GOOD;
 191
 192         /* Check if Vlan is present */
 193         if (prs & DPAA_PARSE_VLAN_MASK)
 194                 m->ol_flags |= PKT_RX_VLAN;
 195         /* Packet received without stripping the vlan */
 196 }
 197
 198 static inline void dpaa_checksum(struct rte_mbuf *mbuf)
 199 {
 200         struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf, struct ether_hdr *);
 201         char *l3_hdr = (char *)eth_hdr + mbuf->l2_len;
 202         struct ipv4_hdr *ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 203         struct ipv6_hdr *ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 204
 205         DPAA_DP_LOG(DEBUG, "Calculating checksum for mbuf: %p", mbuf);
 206
 207         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 208             ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 209             RTE_PTYPE_L3_IPV4_EXT)) {
 210                 ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 211                 ipv4_hdr->hdr_checksum = 0;
 212                 ipv4_hdr->hdr_checksum = rte_ipv4_cksum(ipv4_hdr);
 213         } else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 214                    RTE_PTYPE_L3_IPV6) ||
 215                    ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 216                    RTE_PTYPE_L3_IPV6_EXT))
 217                 ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 218
 219         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP) {
 220                 struct tcp_hdr *tcp_hdr = (struct tcp_hdr *)(l3_hdr +
 221                                           mbuf->l3_len);
 222                 tcp_hdr->cksum = 0;
 223                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 224                         tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 225                                                                tcp_hdr);
 226                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 227                         tcp_hdr->cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 228                                                                tcp_hdr);
 229         } else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) ==
 230                    RTE_PTYPE_L4_UDP) {
 231                 struct udp_hdr *udp_hdr = (struct udp_hdr *)(l3_hdr +
 232                                                              mbuf->l3_len);
 233                 udp_hdr->dgram_cksum = 0;
 234                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 235                         udp_hdr->dgram_cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 236                                                                      udp_hdr);
 237                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 238                         udp_hdr->dgram_cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 239                                                                      udp_hdr);
 240         }
 241 }
 242
 243 static inline void dpaa_checksum_offload(struct rte_mbuf *mbuf,
 244                                          struct qm_fd *fd, char *prs_buf)
 245 {
 246         struct dpaa_eth_parse_results_t *prs;
 247
 248         DPAA_DP_LOG(DEBUG, " Offloading checksum for mbuf: %p", mbuf);
 249
 250         prs = GET_TX_PRS(prs_buf);
 251         prs->l3r = 0;
 252         prs->l4r = 0;
 253         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 254            ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 255            RTE_PTYPE_L3_IPV4_EXT))
 256                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV4;
 257         else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 258                    RTE_PTYPE_L3_IPV6) ||
 259                  ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 260                 RTE_PTYPE_L3_IPV6_EXT))
 261                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV6;
 262
 263         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP)
 264                 prs->l4r = DPAA_L4_PARSE_RESULT_TCP;
 265         else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_UDP)
 266                 prs->l4r = DPAA_L4_PARSE_RESULT_UDP;
 267
 268         prs->ip_off[0] = mbuf->l2_len;
 269         prs->l4_off = mbuf->l3_len + mbuf->l2_len;
 270         /* Enable L3 (and L4, if TCP or UDP) HW checksum*/
 271         fd->cmd = DPAA_FD_CMD_RPD | DPAA_FD_CMD_DTC;
 272 }
 273
 274 static inline void
 275 dpaa_unsegmented_checksum(struct rte_mbuf *mbuf, struct qm_fd *fd_arr)
 276 {
 277         if (!mbuf->packet_type) {
 278                 struct rte_net_hdr_lens hdr_lens;
 279
 280                 mbuf->packet_type = rte_net_get_ptype(mbuf, &hdr_lens,
 281                                 RTE_PTYPE_L2_MASK | RTE_PTYPE_L3_MASK
 282                                 | RTE_PTYPE_L4_MASK);
 283                 mbuf->l2_len = hdr_lens.l2_len;
 284                 mbuf->l3_len = hdr_lens.l3_len;
 285         }
 286         if (mbuf->data_off < (DEFAULT_TX_ICEOF +
 287             sizeof(struct dpaa_eth_parse_results_t))) {
 288                 DPAA_DP_LOG(DEBUG, "Checksum offload Err: "
 289                         "Not enough Headroom "
 290                         "space for correct Checksum offload."
 291                         "So Calculating checksum in Software.");
 292                 dpaa_checksum(mbuf);
 293         } else {
 294                 dpaa_checksum_offload(mbuf, fd_arr, mbuf->buf_addr);
 295         }
 296 }
 297
 298 struct rte_mbuf *
 299 dpaa_eth_sg_to_mbuf(const struct qm_fd *fd, uint32_t ifid)
 300 {
 301         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 302         struct rte_mbuf *first_seg, *prev_seg, *cur_seg, *temp;
 303         struct qm_sg_entry *sgt, *sg_temp;
 304         void *vaddr, *sg_vaddr;
 305         int i = 0;
 306         uint8_t fd_offset = fd->offset;
 307
 308         DPAA_DP_LOG(DEBUG, "Received an SG frame");
 309
 310         vaddr = rte_dpaa_mem_ptov(qm_fd_addr(fd));
 311         if (!vaddr) {
 312                 DPAA_PMD_ERR("unable to convert physical address");
 313                 return NULL;
 314         }
 315         sgt = vaddr + fd_offset;
 316         sg_temp = &sgt[i++];
 317         hw_sg_to_cpu(sg_temp);
 318         temp = (struct rte_mbuf *)((char *)vaddr - bp_info->meta_data_size);
 319         sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 320
 321         first_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 322                                                 bp_info->meta_data_size);
 323         first_seg->data_off = sg_temp->offset;
 324         first_seg->data_len = sg_temp->length;
 325         first_seg->pkt_len = sg_temp->length;
 326         rte_mbuf_refcnt_set(first_seg, 1);
 327
 328         first_seg->port = ifid;
 329         first_seg->nb_segs = 1;
 330         first_seg->ol_flags = 0;
 331         prev_seg = first_seg;
 332         while (i < DPAA_SGT_MAX_ENTRIES) {
 333                 sg_temp = &sgt[i++];
 334                 hw_sg_to_cpu(sg_temp);
 335                 sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 336                 cur_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 337                                                       bp_info->meta_data_size);
 338                 cur_seg->data_off = sg_temp->offset;
 339                 cur_seg->data_len = sg_temp->length;
 340                 first_seg->pkt_len += sg_temp->length;
 341                 first_seg->nb_segs += 1;
 342                 rte_mbuf_refcnt_set(cur_seg, 1);
 343                 prev_seg->next = cur_seg;
 344                 if (sg_temp->final) {
 345                         cur_seg->next = NULL;
 346                         break;
 347                 }
 348                 prev_seg = cur_seg;
 349         }
 350
 351         dpaa_eth_packet_info(first_seg, (uint64_t)vaddr);
 352         rte_pktmbuf_free_seg(temp);
 353
 354         return first_seg;
 355 }
 356
 357 static inline struct rte_mbuf *
 358 dpaa_eth_fd_to_mbuf(const struct qm_fd *fd, uint32_t ifid)
 359 {
 360         struct rte_mbuf *mbuf;
 361         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 362         void *ptr = rte_dpaa_mem_ptov(qm_fd_addr(fd));
 363         uint8_t format =
 364                 (fd->opaque & DPAA_FD_FORMAT_MASK) >> DPAA_FD_FORMAT_SHIFT;
 365         uint16_t offset;
 366         uint32_t length;
 367
 368         DPAA_DP_LOG(DEBUG, " FD--->MBUF");
 369
 370         if (unlikely(format == qm_fd_sg))
 371                 return dpaa_eth_sg_to_mbuf(fd, ifid);
 372
 373         rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF));
 374
 375         offset = (fd->opaque & DPAA_FD_OFFSET_MASK) >> DPAA_FD_OFFSET_SHIFT;
 376         length = fd->opaque & DPAA_FD_LENGTH_MASK;
 377
 378         /* Ignoring case when format != qm_fd_contig */
 379         dpaa_display_frame(fd);
 380
 381         mbuf = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size);
 382
 383         mbuf->data_off = offset;
 384         mbuf->data_len = length;
 385         mbuf->pkt_len = length;
 386
 387         mbuf->port = ifid;
 388         mbuf->nb_segs = 1;
 389         mbuf->ol_flags = 0;
 390         mbuf->next = NULL;
 391         rte_mbuf_refcnt_set(mbuf, 1);
 392         dpaa_eth_packet_info(mbuf, (uint64_t)mbuf->buf_addr);
 393
 394         return mbuf;
 395 }
 396
 397 uint16_t dpaa_eth_queue_rx(void *q,
 398                            struct rte_mbuf **bufs,
 399                            uint16_t nb_bufs)
 400 {
 401         struct qman_fq *fq = q;
 402         struct qm_dqrr_entry *dq;
 403         uint32_t num_rx = 0, ifid = ((struct dpaa_if *)fq->dpaa_intf)->ifid;
 404         int ret;
 405
 406         ret = rte_dpaa_portal_init((void *)0);
 407         if (ret) {
 408                 DPAA_PMD_ERR("Failure in affining portal");
 409                 return 0;
 410         }
 411
 412         ret = qman_set_vdq(fq, (nb_bufs > DPAA_MAX_DEQUEUE_NUM_FRAMES) ?
 413                                 DPAA_MAX_DEQUEUE_NUM_FRAMES : nb_bufs);
 414         if (ret)
 415                 return 0;
 416
 417         do {
 418                 dq = qman_dequeue(fq);
 419                 if (!dq)
 420                         continue;
 421                 bufs[num_rx++] = dpaa_eth_fd_to_mbuf(&dq->fd, ifid);
 422                 qman_dqrr_consume(fq, dq);
 423         } while (fq->flags & QMAN_FQ_STATE_VDQCR);
 424
 425         return num_rx;
 426 }
 427
 428 static void *dpaa_get_pktbuf(struct dpaa_bp_info *bp_info)
 429 {
 430         int ret;
 431         uint64_t buf = 0;
 432         struct bm_buffer bufs;
 433
 434         ret = bman_acquire(bp_info->bp, &bufs, 1, 0);
 435         if (ret <= 0) {
 436                 DPAA_PMD_WARN("Failed to allocate buffers %d", ret);
 437                 return (void *)buf;
 438         }
 439
 440         DPAA_DP_LOG(DEBUG, "got buffer 0x%lx from pool %d",
 441                     (uint64_t)bufs.addr, bufs.bpid);
 442
 443         buf = (uint64_t)rte_dpaa_mem_ptov(bufs.addr) - bp_info->meta_data_size;
 444         if (!buf)
 445                 goto out;
 446
 447 out:
 448         return (void *)buf;
 449 }
 450
 451 static struct rte_mbuf *dpaa_get_dmable_mbuf(struct rte_mbuf *mbuf,
 452                                              struct dpaa_if *dpaa_intf)
 453 {
 454         struct rte_mbuf *dpaa_mbuf;
 455
 456         /* allocate pktbuffer on bpid for dpaa port */
 457         dpaa_mbuf = dpaa_get_pktbuf(dpaa_intf->bp_info);
 458         if (!dpaa_mbuf)
 459                 return NULL;
 460
 461         memcpy((uint8_t *)(dpaa_mbuf->buf_addr) + RTE_PKTMBUF_HEADROOM, (void *)
 462                 ((uint8_t *)(mbuf->buf_addr) + mbuf->data_off), mbuf->pkt_len);
 463
 464         /* Copy only the required fields */
 465         dpaa_mbuf->data_off = RTE_PKTMBUF_HEADROOM;
 466         dpaa_mbuf->pkt_len = mbuf->pkt_len;
 467         dpaa_mbuf->ol_flags = mbuf->ol_flags;
 468         dpaa_mbuf->packet_type = mbuf->packet_type;
 469         dpaa_mbuf->tx_offload = mbuf->tx_offload;
 470         rte_pktmbuf_free(mbuf);
 471         return dpaa_mbuf;
 472 }
 473
 474 int
 475 dpaa_eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf,
 476                 struct qm_fd *fd,
 477                 uint32_t bpid)
 478 {
 479         struct rte_mbuf *cur_seg = mbuf, *prev_seg = NULL;
 480         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(bpid);
 481         struct rte_mbuf *temp, *mi;
 482         struct qm_sg_entry *sg_temp, *sgt;
 483         int i = 0;
 484
 485         DPAA_DP_LOG(DEBUG, "Creating SG FD to transmit");
 486
 487         temp = rte_pktmbuf_alloc(bp_info->mp);
 488         if (!temp) {
 489                 DPAA_PMD_ERR("Failure in allocation of mbuf");
 490                 return -1;
 491         }
 492         if (temp->buf_len < ((mbuf->nb_segs * sizeof(struct qm_sg_entry))
 493                                 + temp->data_off)) {
 494                 DPAA_PMD_ERR("Insufficient space in mbuf for SG entries");
 495                 return -1;
 496         }
 497
 498         fd->cmd = 0;
 499         fd->opaque_addr = 0;
 500
 501         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 502                 if (!mbuf->packet_type) {
 503                         struct rte_net_hdr_lens hdr_lens;
 504
 505                         mbuf->packet_type = rte_net_get_ptype(mbuf, &hdr_lens,
 506                                         RTE_PTYPE_L2_MASK | RTE_PTYPE_L3_MASK
 507                                         | RTE_PTYPE_L4_MASK);
 508                         mbuf->l2_len = hdr_lens.l2_len;
 509                         mbuf->l3_len = hdr_lens.l3_len;
 510                 }
 511                 if (temp->data_off < DEFAULT_TX_ICEOF
 512                         + sizeof(struct dpaa_eth_parse_results_t))
 513                         temp->data_off = DEFAULT_TX_ICEOF
 514                                 + sizeof(struct dpaa_eth_parse_results_t);
 515                 dcbz_64(temp->buf_addr);
 516                 dpaa_checksum_offload(mbuf, fd, temp->buf_addr);
 517         }
 518
 519         sgt = temp->buf_addr + temp->data_off;
 520         fd->format = QM_FD_SG;
 521         fd->addr = temp->buf_iova;
 522         fd->offset = temp->data_off;
 523         fd->bpid = bpid;
 524         fd->length20 = mbuf->pkt_len;
 525
 526         while (i < DPAA_SGT_MAX_ENTRIES) {
 527                 sg_temp = &sgt[i++];
 528                 sg_temp->opaque = 0;
 529                 sg_temp->val = 0;
 530                 sg_temp->addr = cur_seg->buf_iova;
 531                 sg_temp->offset = cur_seg->data_off;
 532                 sg_temp->length = cur_seg->data_len;
 533                 if (RTE_MBUF_DIRECT(cur_seg)) {
 534                         if (rte_mbuf_refcnt_read(cur_seg) > 1) {
 535                                 /*If refcnt > 1, invalid bpid is set to ensure
 536                                  * buffer is not freed by HW.
 537                                  */
 538                                 sg_temp->bpid = 0xff;
 539                                 rte_mbuf_refcnt_update(cur_seg, -1);
 540                         } else {
 541                                 sg_temp->bpid =
 542                                         DPAA_MEMPOOL_TO_BPID(cur_seg->pool);
 543                         }
 544                         cur_seg = cur_seg->next;
 545                 } else {
 546                         /* Get owner MBUF from indirect buffer */
 547                         mi = rte_mbuf_from_indirect(cur_seg);
 548                         if (rte_mbuf_refcnt_read(mi) > 1) {
 549                                 /*If refcnt > 1, invalid bpid is set to ensure
 550                                  * owner buffer is not freed by HW.
 551                                  */
 552                                 sg_temp->bpid = 0xff;
 553                         } else {
 554                                 sg_temp->bpid = DPAA_MEMPOOL_TO_BPID(mi->pool);
 555                                 rte_mbuf_refcnt_update(mi, 1);
 556                         }
 557                         prev_seg = cur_seg;
 558                         cur_seg = cur_seg->next;
 559                         prev_seg->next = NULL;
 560                         rte_pktmbuf_free(prev_seg);
 561                 }
 562                 if (cur_seg == NULL) {
 563                         sg_temp->final = 1;
 564                         cpu_to_hw_sg(sg_temp);
 565                         break;
 566                 }
 567                 cpu_to_hw_sg(sg_temp);
 568         }
 569         return 0;
 570 }
 571
 572 /* Handle mbufs which are not segmented (non SG) */
 573 static inline void
 574 tx_on_dpaa_pool_unsegmented(struct rte_mbuf *mbuf,
 575                             struct dpaa_bp_info *bp_info,
 576                             struct qm_fd *fd_arr)
 577 {
 578         struct rte_mbuf *mi = NULL;
 579
 580         if (RTE_MBUF_DIRECT(mbuf)) {
 581                 if (rte_mbuf_refcnt_read(mbuf) > 1) {
 582                         /* In case of direct mbuf and mbuf being cloned,
 583                          * BMAN should _not_ release buffer.
 584                          */
 585                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 586                         /* Buffer should be releasd by EAL */
 587                         rte_mbuf_refcnt_update(mbuf, -1);
 588                 } else {
 589                         /* In case of direct mbuf and no cloning, mbuf can be
 590                          * released by BMAN.
 591                          */
 592                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 593                 }
 594         } else {
 595                 /* This is data-containing core mbuf: 'mi' */
 596                 mi = rte_mbuf_from_indirect(mbuf);
 597                 if (rte_mbuf_refcnt_read(mi) > 1) {
 598                         /* In case of indirect mbuf, and mbuf being cloned,
 599                          * BMAN should _not_ release it and let EAL release
 600                          * it through pktmbuf_free below.
 601                          */
 602                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 603                 } else {
 604                         /* In case of indirect mbuf, and no cloning, core mbuf
 605                          * should be released by BMAN.
 606                          * Increate refcnt of core mbuf so that when
 607                          * pktmbuf_free is called and mbuf is released, EAL
 608                          * doesn't try to release core mbuf which would have
 609                          * been released by BMAN.
 610                          */
 611                         rte_mbuf_refcnt_update(mi, 1);
 612                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 613                 }
 614                 rte_pktmbuf_free(mbuf);
 615         }
 616
 617         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK)
 618                 dpaa_unsegmented_checksum(mbuf, fd_arr);
 619 }
 620
 621 /* Handle all mbufs on dpaa BMAN managed pool */
 622 static inline uint16_t
 623 tx_on_dpaa_pool(struct rte_mbuf *mbuf,
 624                 struct dpaa_bp_info *bp_info,
 625                 struct qm_fd *fd_arr)
 626 {
 627         DPAA_DP_LOG(DEBUG, "BMAN offloaded buffer, mbuf: %p", mbuf);
 628
 629         if (mbuf->nb_segs == 1) {
 630                 /* Case for non-segmented buffers */
 631                 tx_on_dpaa_pool_unsegmented(mbuf, bp_info, fd_arr);
 632         } else if (mbuf->nb_segs > 1 &&
 633                    mbuf->nb_segs <= DPAA_SGT_MAX_ENTRIES) {
 634                 if (dpaa_eth_mbuf_to_sg_fd(mbuf, fd_arr, bp_info->bpid)) {
 635                         DPAA_PMD_DEBUG("Unable to create Scatter Gather FD");
 636                         return 1;
 637                 }
 638         } else {
 639                 DPAA_PMD_DEBUG("Number of Segments not supported");
 640                 return 1;
 641         }
 642
 643         return 0;
 644 }
 645
 646 /* Handle all mbufs on an external pool (non-dpaa) */
 647 static inline uint16_t
 648 tx_on_external_pool(struct qman_fq *txq, struct rte_mbuf *mbuf,
 649                     struct qm_fd *fd_arr)
 650 {
 651         struct dpaa_if *dpaa_intf = txq->dpaa_intf;
 652         struct rte_mbuf *dmable_mbuf;
 653
 654         DPAA_DP_LOG(DEBUG, "Non-BMAN offloaded buffer."
 655                     "Allocating an offloaded buffer");
 656         dmable_mbuf = dpaa_get_dmable_mbuf(mbuf, dpaa_intf);
 657         if (!dmable_mbuf) {
 658                 DPAA_DP_LOG(DEBUG, "no dpaa buffers.");
 659                 return 1;
 660         }
 661
 662         DPAA_MBUF_TO_CONTIG_FD(dmable_mbuf, fd_arr, dpaa_intf->bp_info->bpid);
 663
 664         return 0;
 665 }
 666
 667 uint16_t
 668 dpaa_eth_queue_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
 669 {
 670         struct rte_mbuf *mbuf, *mi = NULL;
 671         struct rte_mempool *mp;
 672         struct dpaa_bp_info *bp_info;
 673         struct qm_fd fd_arr[DPAA_TX_BURST_SIZE];
 674         uint32_t frames_to_send, loop, sent = 0;
 675         uint16_t state;
 676         int ret;
 677
 678         ret = rte_dpaa_portal_init((void *)0);
 679         if (ret) {
 680                 DPAA_PMD_ERR("Failure in affining portal");
 681                 return 0;
 682         }
 683
 684         DPAA_DP_LOG(DEBUG, "Transmitting %d buffers on queue: %p", nb_bufs, q);
 685
 686         while (nb_bufs) {
 687                 frames_to_send = (nb_bufs > DPAA_TX_BURST_SIZE) ?
 688                                 DPAA_TX_BURST_SIZE : nb_bufs;
 689                 for (loop = 0; loop < frames_to_send; loop++) {
 690                         mbuf = *(bufs++);
 691                         if (likely(RTE_MBUF_DIRECT(mbuf))) {
 692                                 mp = mbuf->pool;
 693                                 bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
 694                                 if (likely(mp->ops_index ==
 695                                                 bp_info->dpaa_ops_index &&
 696                                         mbuf->nb_segs == 1 &&
 697                                         rte_mbuf_refcnt_read(mbuf) == 1)) {
 698                                         DPAA_MBUF_TO_CONTIG_FD(mbuf,
 699                                                 &fd_arr[loop], bp_info->bpid);
 700                                         if (mbuf->ol_flags &
 701                                                 DPAA_TX_CKSUM_OFFLOAD_MASK)
 702                                                 dpaa_unsegmented_checksum(mbuf,
 703                                                         &fd_arr[loop]);
 704                                         continue;
 705                                 }
 706                         } else {
 707                                 mi = rte_mbuf_from_indirect(mbuf);
 708                                 mp = mi->pool;
 709                         }
 710
 711                         bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
 712                         if (likely(mp->ops_index == bp_info->dpaa_ops_index)) {
 713                                 state = tx_on_dpaa_pool(mbuf, bp_info,
 714                                                         &fd_arr[loop]);
 715                                 if (unlikely(state)) {
 716                                         /* Set frames_to_send & nb_bufs so
 717                                          * that packets are transmitted till
 718                                          * previous frame.
 719                                          */
 720                                         frames_to_send = loop;
 721                                         nb_bufs = loop;
 722                                         goto send_pkts;
 723                                 }
 724                         } else {
 725                                 state = tx_on_external_pool(q, mbuf,
 726                                                             &fd_arr[loop]);
 727                                 if (unlikely(state)) {
 728                                         /* Set frames_to_send & nb_bufs so
 729                                          * that packets are transmitted till
 730                                          * previous frame.
 731                                          */
 732                                         frames_to_send = loop;
 733                                         nb_bufs = loop;
 734                                         goto send_pkts;
 735                                 }
 736                         }
 737                 }
 738
 739 send_pkts:
 740                 loop = 0;
 741                 while (loop < frames_to_send) {
 742                         loop += qman_enqueue_multi(q, &fd_arr[loop],
 743                                         frames_to_send - loop);
 744                 }
 745                 nb_bufs -= frames_to_send;
 746                 sent += frames_to_send;
 747         }
 748
 749         DPAA_DP_LOG(DEBUG, "Transmitted %d buffers on queue: %p", sent, q);
 750
 751         return sent;
 752 }
 753
 754 uint16_t dpaa_eth_tx_drop_all(void *q  __rte_unused,
 755                               struct rte_mbuf **bufs __rte_unused,
 756                 uint16_t nb_bufs __rte_unused)
 757 {
 758         DPAA_DP_LOG(DEBUG, "Drop all packets");
 759
 760         /* Drop all incoming packets. No need to free packets here
 761          * because the rte_eth f/w frees up the packets through tx_buffer
 762          * callback in case this functions returns count less than nb_bufs
 763          */
 764         return 0;
 765 }