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
  36 #include "dpaa_ethdev.h"
  37 #include "dpaa_rxtx.h"
  38 #include <rte_dpaa_bus.h>
  39 #include <dpaa_mempool.h>
  40
  41 #include <fsl_usd.h>
  42 #include <fsl_qman.h>
  43 #include <fsl_bman.h>
  44 #include <of.h>
  45 #include <netcfg.h>
  46
  47 #define DPAA_MBUF_TO_CONTIG_FD(_mbuf, _fd, _bpid) \
  48         do { \
  49                 (_fd)->cmd = 0; \
  50                 (_fd)->opaque_addr = 0; \
  51                 (_fd)->opaque = QM_FD_CONTIG << DPAA_FD_FORMAT_SHIFT; \
  52                 (_fd)->opaque |= ((_mbuf)->data_off) << DPAA_FD_OFFSET_SHIFT; \
  53                 (_fd)->opaque |= (_mbuf)->pkt_len; \
  54                 (_fd)->addr = (_mbuf)->buf_iova; \
  55                 (_fd)->bpid = _bpid; \
  56         } while (0)
  57
  58 #if (defined RTE_LIBRTE_DPAA_DEBUG_DRIVER)
  59 void dpaa_display_frame(const struct qm_fd *fd)
  60 {
  61         int ii;
  62         char *ptr;
  63
  64         printf("%s::bpid %x addr %08x%08x, format %d off %d, len %d stat %x\n",
  65                __func__, fd->bpid, fd->addr_hi, fd->addr_lo, fd->format,
  66                 fd->offset, fd->length20, fd->status);
  67
  68         ptr = (char *)rte_dpaa_mem_ptov(fd->addr);
  69         ptr += fd->offset;
  70         printf("%02x ", *ptr);
  71         for (ii = 1; ii < fd->length20; ii++) {
  72                 printf("%02x ", *ptr);
  73                 if ((ii % 16) == 0)
  74                         printf("\n");
  75                 ptr++;
  76         }
  77         printf("\n");
  78 }
  79 #else
  80 #define dpaa_display_frame(a)
  81 #endif
  82
  83 static inline void dpaa_slow_parsing(struct rte_mbuf *m __rte_unused,
  84                                      uint64_t prs __rte_unused)
  85 {
  86         DPAA_DP_LOG(DEBUG, "Slow parsing");
  87         /*TBD:XXX: to be implemented*/
  88 }
  89
  90 static inline void dpaa_eth_packet_info(struct rte_mbuf *m,
  91                                         uint64_t fd_virt_addr)
  92 {
  93         struct annotations_t *annot = GET_ANNOTATIONS(fd_virt_addr);
  94         uint64_t prs = *((uint64_t *)(&annot->parse)) & DPAA_PARSE_MASK;
  95
  96         DPAA_DP_LOG(DEBUG, " Parsing mbuf: %p with annotations: %p", m, annot);
  97
  98         switch (prs) {
  99         case DPAA_PKT_TYPE_NONE:
 100                 m->packet_type = 0;
 101                 break;
 102         case DPAA_PKT_TYPE_ETHER:
 103                 m->packet_type = RTE_PTYPE_L2_ETHER;
 104                 break;
 105         case DPAA_PKT_TYPE_IPV4:
 106                 m->packet_type = RTE_PTYPE_L2_ETHER |
 107                         RTE_PTYPE_L3_IPV4;
 108                 break;
 109         case DPAA_PKT_TYPE_IPV6:
 110                 m->packet_type = RTE_PTYPE_L2_ETHER |
 111                         RTE_PTYPE_L3_IPV6;
 112                 break;
 113         case DPAA_PKT_TYPE_IPV4_FRAG:
 114         case DPAA_PKT_TYPE_IPV4_FRAG_UDP:
 115         case DPAA_PKT_TYPE_IPV4_FRAG_TCP:
 116         case DPAA_PKT_TYPE_IPV4_FRAG_SCTP:
 117                 m->packet_type = RTE_PTYPE_L2_ETHER |
 118                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG;
 119                 break;
 120         case DPAA_PKT_TYPE_IPV6_FRAG:
 121         case DPAA_PKT_TYPE_IPV6_FRAG_UDP:
 122         case DPAA_PKT_TYPE_IPV6_FRAG_TCP:
 123         case DPAA_PKT_TYPE_IPV6_FRAG_SCTP:
 124                 m->packet_type = RTE_PTYPE_L2_ETHER |
 125                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG;
 126                 break;
 127         case DPAA_PKT_TYPE_IPV4_EXT:
 128                 m->packet_type = RTE_PTYPE_L2_ETHER |
 129                         RTE_PTYPE_L3_IPV4_EXT;
 130                 break;
 131         case DPAA_PKT_TYPE_IPV6_EXT:
 132                 m->packet_type = RTE_PTYPE_L2_ETHER |
 133                         RTE_PTYPE_L3_IPV6_EXT;
 134                 break;
 135         case DPAA_PKT_TYPE_IPV4_TCP:
 136                 m->packet_type = RTE_PTYPE_L2_ETHER |
 137                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP;
 138                 break;
 139         case DPAA_PKT_TYPE_IPV6_TCP:
 140                 m->packet_type = RTE_PTYPE_L2_ETHER |
 141                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
 142                 break;
 143         case DPAA_PKT_TYPE_IPV4_UDP:
 144                 m->packet_type = RTE_PTYPE_L2_ETHER |
 145                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP;
 146                 break;
 147         case DPAA_PKT_TYPE_IPV6_UDP:
 148                 m->packet_type = RTE_PTYPE_L2_ETHER |
 149                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
 150                 break;
 151         case DPAA_PKT_TYPE_IPV4_EXT_UDP:
 152                 m->packet_type = RTE_PTYPE_L2_ETHER |
 153                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP;
 154                 break;
 155         case DPAA_PKT_TYPE_IPV6_EXT_UDP:
 156                 m->packet_type = RTE_PTYPE_L2_ETHER |
 157                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP;
 158                 break;
 159         case DPAA_PKT_TYPE_IPV4_EXT_TCP:
 160                 m->packet_type = RTE_PTYPE_L2_ETHER |
 161                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP;
 162                 break;
 163         case DPAA_PKT_TYPE_IPV6_EXT_TCP:
 164                 m->packet_type = RTE_PTYPE_L2_ETHER |
 165                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP;
 166                 break;
 167         case DPAA_PKT_TYPE_IPV4_SCTP:
 168                 m->packet_type = RTE_PTYPE_L2_ETHER |
 169                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP;
 170                 break;
 171         case DPAA_PKT_TYPE_IPV6_SCTP:
 172                 m->packet_type = RTE_PTYPE_L2_ETHER |
 173                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_SCTP;
 174                 break;
 175         /* More switch cases can be added */
 176         default:
 177                 dpaa_slow_parsing(m, prs);
 178         }
 179
 180         m->tx_offload = annot->parse.ip_off[0];
 181         m->tx_offload |= (annot->parse.l4_off - annot->parse.ip_off[0])
 182                                         << DPAA_PKT_L3_LEN_SHIFT;
 183
 184         /* Set the hash values */
 185         m->hash.rss = (uint32_t)(rte_be_to_cpu_64(annot->hash));
 186         m->ol_flags = PKT_RX_RSS_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_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 struct rte_mbuf *
 275 dpaa_eth_sg_to_mbuf(struct qm_fd *fd, uint32_t ifid)
 276 {
 277         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 278         struct rte_mbuf *first_seg, *prev_seg, *cur_seg, *temp;
 279         struct qm_sg_entry *sgt, *sg_temp;
 280         void *vaddr, *sg_vaddr;
 281         int i = 0;
 282         uint8_t fd_offset = fd->offset;
 283
 284         DPAA_DP_LOG(DEBUG, "Received an SG frame");
 285
 286         vaddr = rte_dpaa_mem_ptov(qm_fd_addr(fd));
 287         if (!vaddr) {
 288                 DPAA_PMD_ERR("unable to convert physical address");
 289                 return NULL;
 290         }
 291         sgt = vaddr + fd_offset;
 292         sg_temp = &sgt[i++];
 293         hw_sg_to_cpu(sg_temp);
 294         temp = (struct rte_mbuf *)((char *)vaddr - bp_info->meta_data_size);
 295         sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 296
 297         first_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 298                                                 bp_info->meta_data_size);
 299         first_seg->data_off = sg_temp->offset;
 300         first_seg->data_len = sg_temp->length;
 301         first_seg->pkt_len = sg_temp->length;
 302         rte_mbuf_refcnt_set(first_seg, 1);
 303
 304         first_seg->port = ifid;
 305         first_seg->nb_segs = 1;
 306         first_seg->ol_flags = 0;
 307         prev_seg = first_seg;
 308         while (i < DPAA_SGT_MAX_ENTRIES) {
 309                 sg_temp = &sgt[i++];
 310                 hw_sg_to_cpu(sg_temp);
 311                 sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 312                 cur_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 313                                                       bp_info->meta_data_size);
 314                 cur_seg->data_off = sg_temp->offset;
 315                 cur_seg->data_len = sg_temp->length;
 316                 first_seg->pkt_len += sg_temp->length;
 317                 first_seg->nb_segs += 1;
 318                 rte_mbuf_refcnt_set(cur_seg, 1);
 319                 prev_seg->next = cur_seg;
 320                 if (sg_temp->final) {
 321                         cur_seg->next = NULL;
 322                         break;
 323                 }
 324                 prev_seg = cur_seg;
 325         }
 326
 327         dpaa_eth_packet_info(first_seg, (uint64_t)vaddr);
 328         rte_pktmbuf_free_seg(temp);
 329
 330         return first_seg;
 331 }
 332
 333 static inline struct rte_mbuf *dpaa_eth_fd_to_mbuf(struct qm_fd *fd,
 334                                                         uint32_t ifid)
 335 {
 336         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 337         struct rte_mbuf *mbuf;
 338         void *ptr;
 339         uint8_t format =
 340                 (fd->opaque & DPAA_FD_FORMAT_MASK) >> DPAA_FD_FORMAT_SHIFT;
 341         uint16_t offset =
 342                 (fd->opaque & DPAA_FD_OFFSET_MASK) >> DPAA_FD_OFFSET_SHIFT;
 343         uint32_t length = fd->opaque & DPAA_FD_LENGTH_MASK;
 344
 345         DPAA_DP_LOG(DEBUG, " FD--->MBUF");
 346
 347         if (unlikely(format == qm_fd_sg))
 348                 return dpaa_eth_sg_to_mbuf(fd, ifid);
 349
 350         /* Ignoring case when format != qm_fd_contig */
 351         dpaa_display_frame(fd);
 352         ptr = rte_dpaa_mem_ptov(fd->addr);
 353         /* Ignoring case when ptr would be NULL. That is only possible incase
 354          * of a corrupted packet
 355          */
 356
 357         mbuf = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size);
 358         /* Prefetch the Parse results and packet data to L1 */
 359         rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF));
 360         rte_prefetch0((void *)((uint8_t *)ptr + offset));
 361
 362         mbuf->data_off = offset;
 363         mbuf->data_len = length;
 364         mbuf->pkt_len = length;
 365
 366         mbuf->port = ifid;
 367         mbuf->nb_segs = 1;
 368         mbuf->ol_flags = 0;
 369         mbuf->next = NULL;
 370         rte_mbuf_refcnt_set(mbuf, 1);
 371         dpaa_eth_packet_info(mbuf, (uint64_t)mbuf->buf_addr);
 372
 373         return mbuf;
 374 }
 375
 376 uint16_t dpaa_eth_queue_rx(void *q,
 377                            struct rte_mbuf **bufs,
 378                            uint16_t nb_bufs)
 379 {
 380         struct qman_fq *fq = q;
 381         struct qm_dqrr_entry *dq;
 382         uint32_t num_rx = 0, ifid = ((struct dpaa_if *)fq->dpaa_intf)->ifid;
 383         int ret;
 384
 385         ret = rte_dpaa_portal_init((void *)0);
 386         if (ret) {
 387                 DPAA_PMD_ERR("Failure in affining portal");
 388                 return 0;
 389         }
 390
 391         ret = qman_set_vdq(fq, (nb_bufs > DPAA_MAX_DEQUEUE_NUM_FRAMES) ?
 392                                 DPAA_MAX_DEQUEUE_NUM_FRAMES : nb_bufs);
 393         if (ret)
 394                 return 0;
 395
 396         do {
 397                 dq = qman_dequeue(fq);
 398                 if (!dq)
 399                         continue;
 400                 bufs[num_rx++] = dpaa_eth_fd_to_mbuf(&dq->fd, ifid);
 401                 qman_dqrr_consume(fq, dq);
 402         } while (fq->flags & QMAN_FQ_STATE_VDQCR);
 403
 404         return num_rx;
 405 }
 406
 407 static void *dpaa_get_pktbuf(struct dpaa_bp_info *bp_info)
 408 {
 409         int ret;
 410         uint64_t buf = 0;
 411         struct bm_buffer bufs;
 412
 413         ret = bman_acquire(bp_info->bp, &bufs, 1, 0);
 414         if (ret <= 0) {
 415                 DPAA_PMD_WARN("Failed to allocate buffers %d", ret);
 416                 return (void *)buf;
 417         }
 418
 419         DPAA_DP_LOG(DEBUG, "got buffer 0x%lx from pool %d",
 420                     (uint64_t)bufs.addr, bufs.bpid);
 421
 422         buf = (uint64_t)rte_dpaa_mem_ptov(bufs.addr) - bp_info->meta_data_size;
 423         if (!buf)
 424                 goto out;
 425
 426 out:
 427         return (void *)buf;
 428 }
 429
 430 static struct rte_mbuf *dpaa_get_dmable_mbuf(struct rte_mbuf *mbuf,
 431                                              struct dpaa_if *dpaa_intf)
 432 {
 433         struct rte_mbuf *dpaa_mbuf;
 434
 435         /* allocate pktbuffer on bpid for dpaa port */
 436         dpaa_mbuf = dpaa_get_pktbuf(dpaa_intf->bp_info);
 437         if (!dpaa_mbuf)
 438                 return NULL;
 439
 440         memcpy((uint8_t *)(dpaa_mbuf->buf_addr) + mbuf->data_off, (void *)
 441                 ((uint8_t *)(mbuf->buf_addr) + mbuf->data_off), mbuf->pkt_len);
 442
 443         /* Copy only the required fields */
 444         dpaa_mbuf->data_off = mbuf->data_off;
 445         dpaa_mbuf->pkt_len = mbuf->pkt_len;
 446         dpaa_mbuf->ol_flags = mbuf->ol_flags;
 447         dpaa_mbuf->packet_type = mbuf->packet_type;
 448         dpaa_mbuf->tx_offload = mbuf->tx_offload;
 449         rte_pktmbuf_free(mbuf);
 450         return dpaa_mbuf;
 451 }
 452
 453 int
 454 dpaa_eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf,
 455                 struct qm_fd *fd,
 456                 uint32_t bpid)
 457 {
 458         struct rte_mbuf *cur_seg = mbuf, *prev_seg = NULL;
 459         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(bpid);
 460         struct rte_mbuf *temp, *mi;
 461         struct qm_sg_entry *sg_temp, *sgt;
 462         int i = 0;
 463
 464         DPAA_DP_LOG(DEBUG, "Creating SG FD to transmit");
 465
 466         temp = rte_pktmbuf_alloc(bp_info->mp);
 467         if (!temp) {
 468                 DPAA_PMD_ERR("Failure in allocation of mbuf");
 469                 return -1;
 470         }
 471         if (temp->buf_len < ((mbuf->nb_segs * sizeof(struct qm_sg_entry))
 472                                 + temp->data_off)) {
 473                 DPAA_PMD_ERR("Insufficient space in mbuf for SG entries");
 474                 return -1;
 475         }
 476
 477         fd->cmd = 0;
 478         fd->opaque_addr = 0;
 479
 480         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 481                 if (temp->data_off < DEFAULT_TX_ICEOF
 482                         + sizeof(struct dpaa_eth_parse_results_t))
 483                         temp->data_off = DEFAULT_TX_ICEOF
 484                                 + sizeof(struct dpaa_eth_parse_results_t);
 485                 dcbz_64(temp->buf_addr);
 486                 dpaa_checksum_offload(mbuf, fd, temp->buf_addr);
 487         }
 488
 489         sgt = temp->buf_addr + temp->data_off;
 490         fd->format = QM_FD_SG;
 491         fd->addr = temp->buf_iova;
 492         fd->offset = temp->data_off;
 493         fd->bpid = bpid;
 494         fd->length20 = mbuf->pkt_len;
 495
 496         while (i < DPAA_SGT_MAX_ENTRIES) {
 497                 sg_temp = &sgt[i++];
 498                 sg_temp->opaque = 0;
 499                 sg_temp->val = 0;
 500                 sg_temp->addr = cur_seg->buf_iova;
 501                 sg_temp->offset = cur_seg->data_off;
 502                 sg_temp->length = cur_seg->data_len;
 503                 if (RTE_MBUF_DIRECT(cur_seg)) {
 504                         if (rte_mbuf_refcnt_read(cur_seg) > 1) {
 505                                 /*If refcnt > 1, invalid bpid is set to ensure
 506                                  * buffer is not freed by HW.
 507                                  */
 508                                 sg_temp->bpid = 0xff;
 509                                 rte_mbuf_refcnt_update(cur_seg, -1);
 510                         } else {
 511                                 sg_temp->bpid =
 512                                         DPAA_MEMPOOL_TO_BPID(cur_seg->pool);
 513                         }
 514                         cur_seg = cur_seg->next;
 515                 } else {
 516                         /* Get owner MBUF from indirect buffer */
 517                         mi = rte_mbuf_from_indirect(cur_seg);
 518                         if (rte_mbuf_refcnt_read(mi) > 1) {
 519                                 /*If refcnt > 1, invalid bpid is set to ensure
 520                                  * owner buffer is not freed by HW.
 521                                  */
 522                                 sg_temp->bpid = 0xff;
 523                         } else {
 524                                 sg_temp->bpid = DPAA_MEMPOOL_TO_BPID(mi->pool);
 525                                 rte_mbuf_refcnt_update(mi, 1);
 526                         }
 527                         prev_seg = cur_seg;
 528                         cur_seg = cur_seg->next;
 529                         prev_seg->next = NULL;
 530                         rte_pktmbuf_free(prev_seg);
 531                 }
 532                 if (cur_seg == NULL) {
 533                         sg_temp->final = 1;
 534                         cpu_to_hw_sg(sg_temp);
 535                         break;
 536                 }
 537                 cpu_to_hw_sg(sg_temp);
 538         }
 539         return 0;
 540 }
 541
 542 /* Handle mbufs which are not segmented (non SG) */
 543 static inline void
 544 tx_on_dpaa_pool_unsegmented(struct rte_mbuf *mbuf,
 545                             struct dpaa_bp_info *bp_info,
 546                             struct qm_fd *fd_arr)
 547 {
 548         struct rte_mbuf *mi = NULL;
 549
 550         if (RTE_MBUF_DIRECT(mbuf)) {
 551                 if (rte_mbuf_refcnt_read(mbuf) > 1) {
 552                         /* In case of direct mbuf and mbuf being cloned,
 553                          * BMAN should _not_ release buffer.
 554                          */
 555                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 556                         /* Buffer should be releasd by EAL */
 557                         rte_mbuf_refcnt_update(mbuf, -1);
 558                 } else {
 559                         /* In case of direct mbuf and no cloning, mbuf can be
 560                          * released by BMAN.
 561                          */
 562                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 563                 }
 564         } else {
 565                 /* This is data-containing core mbuf: 'mi' */
 566                 mi = rte_mbuf_from_indirect(mbuf);
 567                 if (rte_mbuf_refcnt_read(mi) > 1) {
 568                         /* In case of indirect mbuf, and mbuf being cloned,
 569                          * BMAN should _not_ release it and let EAL release
 570                          * it through pktmbuf_free below.
 571                          */
 572                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 573                 } else {
 574                         /* In case of indirect mbuf, and no cloning, core mbuf
 575                          * should be released by BMAN.
 576                          * Increate refcnt of core mbuf so that when
 577                          * pktmbuf_free is called and mbuf is released, EAL
 578                          * doesn't try to release core mbuf which would have
 579                          * been released by BMAN.
 580                          */
 581                         rte_mbuf_refcnt_update(mi, 1);
 582                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 583                 }
 584                 rte_pktmbuf_free(mbuf);
 585         }
 586
 587         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 588                 if (mbuf->data_off < (DEFAULT_TX_ICEOF +
 589                     sizeof(struct dpaa_eth_parse_results_t))) {
 590                         DPAA_DP_LOG(DEBUG, "Checksum offload Err: "
 591                                 "Not enough Headroom "
 592                                 "space for correct Checksum offload."
 593                                 "So Calculating checksum in Software.");
 594                         dpaa_checksum(mbuf);
 595                 } else {
 596                         dpaa_checksum_offload(mbuf, fd_arr, mbuf->buf_addr);
 597                 }
 598         }
 599 }
 600
 601 /* Handle all mbufs on dpaa BMAN managed pool */
 602 static inline uint16_t
 603 tx_on_dpaa_pool(struct rte_mbuf *mbuf,
 604                 struct dpaa_bp_info *bp_info,
 605                 struct qm_fd *fd_arr)
 606 {
 607         DPAA_DP_LOG(DEBUG, "BMAN offloaded buffer, mbuf: %p", mbuf);
 608
 609         if (mbuf->nb_segs == 1) {
 610                 /* Case for non-segmented buffers */
 611                 tx_on_dpaa_pool_unsegmented(mbuf, bp_info, fd_arr);
 612         } else if (mbuf->nb_segs > 1 &&
 613                    mbuf->nb_segs <= DPAA_SGT_MAX_ENTRIES) {
 614                 if (dpaa_eth_mbuf_to_sg_fd(mbuf, fd_arr, bp_info->bpid)) {
 615                         DPAA_PMD_DEBUG("Unable to create Scatter Gather FD");
 616                         return 1;
 617                 }
 618         } else {
 619                 DPAA_PMD_DEBUG("Number of Segments not supported");
 620                 return 1;
 621         }
 622
 623         return 0;
 624 }
 625
 626 /* Handle all mbufs on an external pool (non-dpaa) */
 627 static inline uint16_t
 628 tx_on_external_pool(struct qman_fq *txq, struct rte_mbuf *mbuf,
 629                     struct qm_fd *fd_arr)
 630 {
 631         struct dpaa_if *dpaa_intf = txq->dpaa_intf;
 632         struct rte_mbuf *dmable_mbuf;
 633
 634         DPAA_DP_LOG(DEBUG, "Non-BMAN offloaded buffer."
 635                     "Allocating an offloaded buffer");
 636         dmable_mbuf = dpaa_get_dmable_mbuf(mbuf, dpaa_intf);
 637         if (!dmable_mbuf) {
 638                 DPAA_DP_LOG(DEBUG, "no dpaa buffers.");
 639                 return 1;
 640         }
 641
 642         DPAA_MBUF_TO_CONTIG_FD(dmable_mbuf, fd_arr, dpaa_intf->bp_info->bpid);
 643
 644         return 0;
 645 }
 646
 647 uint16_t
 648 dpaa_eth_queue_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
 649 {
 650         struct rte_mbuf *mbuf, *mi = NULL;
 651         struct rte_mempool *mp;
 652         struct dpaa_bp_info *bp_info;
 653         struct qm_fd fd_arr[MAX_TX_RING_SLOTS];
 654         uint32_t frames_to_send, loop, i = 0;
 655         uint16_t state;
 656         int ret;
 657
 658         ret = rte_dpaa_portal_init((void *)0);
 659         if (ret) {
 660                 DPAA_PMD_ERR("Failure in affining portal");
 661                 return 0;
 662         }
 663
 664         DPAA_DP_LOG(DEBUG, "Transmitting %d buffers on queue: %p", nb_bufs, q);
 665
 666         while (nb_bufs) {
 667                 frames_to_send = (nb_bufs >> 3) ? MAX_TX_RING_SLOTS : nb_bufs;
 668                 for (loop = 0; loop < frames_to_send; loop++, i++) {
 669                         mbuf = bufs[i];
 670                         if (RTE_MBUF_DIRECT(mbuf)) {
 671                                 mp = mbuf->pool;
 672                         } else {
 673                                 mi = rte_mbuf_from_indirect(mbuf);
 674                                 mp = mi->pool;
 675                         }
 676
 677                         bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
 678                         if (likely(mp->ops_index == bp_info->dpaa_ops_index)) {
 679                                 state = tx_on_dpaa_pool(mbuf, bp_info,
 680                                                         &fd_arr[loop]);
 681                                 if (unlikely(state)) {
 682                                         /* Set frames_to_send & nb_bufs so
 683                                          * that packets are transmitted till
 684                                          * previous frame.
 685                                          */
 686                                         frames_to_send = loop;
 687                                         nb_bufs = loop;
 688                                         goto send_pkts;
 689                                 }
 690                         } else {
 691                                 state = tx_on_external_pool(q, mbuf,
 692                                                             &fd_arr[loop]);
 693                                 if (unlikely(state)) {
 694                                         /* Set frames_to_send & nb_bufs so
 695                                          * that packets are transmitted till
 696                                          * previous frame.
 697                                          */
 698                                         frames_to_send = loop;
 699                                         nb_bufs = loop;
 700                                         goto send_pkts;
 701                                 }
 702                         }
 703                 }
 704
 705 send_pkts:
 706                 loop = 0;
 707                 while (loop < frames_to_send) {
 708                         loop += qman_enqueue_multi(q, &fd_arr[loop],
 709                                         frames_to_send - loop);
 710                 }
 711                 nb_bufs -= frames_to_send;
 712         }
 713
 714         DPAA_DP_LOG(DEBUG, "Transmitted %d buffers on queue: %p", i, q);
 715
 716         return i;
 717 }
 718
 719 uint16_t dpaa_eth_tx_drop_all(void *q  __rte_unused,
 720                               struct rte_mbuf **bufs __rte_unused,
 721                 uint16_t nb_bufs __rte_unused)
 722 {
 723         DPAA_DP_LOG(DEBUG, "Drop all packets");
 724
 725         /* Drop all incoming packets. No need to free packets here
 726          * because the rte_eth f/w frees up the packets through tx_buffer
 727          * callback in case this functions returns count less than nb_bufs
 728          */
 729         return 0;
 730 }