drivers/net/dpaa/dpaa_rxtx.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2016 Freescale Semiconductor, Inc. All rights reserved.
   5  *   Copyright 2017 NXP.
   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  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of  Freescale Semiconductor, Inc nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 /* System headers */
  35 #include <inttypes.h>
  36 #include <unistd.h>
  37 #include <stdio.h>
  38 #include <limits.h>
  39 #include <sched.h>
  40 #include <pthread.h>
  41
  42 #include <rte_config.h>
  43 #include <rte_byteorder.h>
  44 #include <rte_common.h>
  45 #include <rte_interrupts.h>
  46 #include <rte_log.h>
  47 #include <rte_debug.h>
  48 #include <rte_pci.h>
  49 #include <rte_atomic.h>
  50 #include <rte_branch_prediction.h>
  51 #include <rte_memory.h>
  52 #include <rte_memzone.h>
  53 #include <rte_tailq.h>
  54 #include <rte_eal.h>
  55 #include <rte_alarm.h>
  56 #include <rte_ether.h>
  57 #include <rte_ethdev.h>
  58 #include <rte_malloc.h>
  59 #include <rte_ring.h>
  60 #include <rte_ip.h>
  61 #include <rte_tcp.h>
  62 #include <rte_udp.h>
  63
  64 #include "dpaa_ethdev.h"
  65 #include "dpaa_rxtx.h"
  66 #include <rte_dpaa_bus.h>
  67 #include <dpaa_mempool.h>
  68
  69 #include <fsl_usd.h>
  70 #include <fsl_qman.h>
  71 #include <fsl_bman.h>
  72 #include <of.h>
  73 #include <netcfg.h>
  74
  75 #define DPAA_MBUF_TO_CONTIG_FD(_mbuf, _fd, _bpid) \
  76         do { \
  77                 (_fd)->cmd = 0; \
  78                 (_fd)->opaque_addr = 0; \
  79                 (_fd)->opaque = QM_FD_CONTIG << DPAA_FD_FORMAT_SHIFT; \
  80                 (_fd)->opaque |= ((_mbuf)->data_off) << DPAA_FD_OFFSET_SHIFT; \
  81                 (_fd)->opaque |= (_mbuf)->pkt_len; \
  82                 (_fd)->addr = (_mbuf)->buf_physaddr; \
  83                 (_fd)->bpid = _bpid; \
  84         } while (0)
  85
  86 #if (defined RTE_LIBRTE_DPAA_DEBUG_DRIVER)
  87 void dpaa_display_frame(const struct qm_fd *fd)
  88 {
  89         int ii;
  90         char *ptr;
  91
  92         printf("%s::bpid %x addr %08x%08x, format %d off %d, len %d stat %x\n",
  93                __func__, fd->bpid, fd->addr_hi, fd->addr_lo, fd->format,
  94                 fd->offset, fd->length20, fd->status);
  95
  96         ptr = (char *)rte_dpaa_mem_ptov(fd->addr);
  97         ptr += fd->offset;
  98         printf("%02x ", *ptr);
  99         for (ii = 1; ii < fd->length20; ii++) {
 100                 printf("%02x ", *ptr);
 101                 if ((ii % 16) == 0)
 102                         printf("\n");
 103                 ptr++;
 104         }
 105         printf("\n");
 106 }
 107 #else
 108 #define dpaa_display_frame(a)
 109 #endif
 110
 111 static inline void dpaa_slow_parsing(struct rte_mbuf *m __rte_unused,
 112                                      uint64_t prs __rte_unused)
 113 {
 114         DPAA_DP_LOG(DEBUG, "Slow parsing");
 115         /*TBD:XXX: to be implemented*/
 116 }
 117
 118 static inline void dpaa_eth_packet_info(struct rte_mbuf *m,
 119                                         uint64_t fd_virt_addr)
 120 {
 121         struct annotations_t *annot = GET_ANNOTATIONS(fd_virt_addr);
 122         uint64_t prs = *((uint64_t *)(&annot->parse)) & DPAA_PARSE_MASK;
 123
 124         DPAA_DP_LOG(DEBUG, " Parsing mbuf: %p with annotations: %p", m, annot);
 125
 126         switch (prs) {
 127         case DPAA_PKT_TYPE_NONE:
 128                 m->packet_type = 0;
 129                 break;
 130         case DPAA_PKT_TYPE_ETHER:
 131                 m->packet_type = RTE_PTYPE_L2_ETHER;
 132                 break;
 133         case DPAA_PKT_TYPE_IPV4:
 134                 m->packet_type = RTE_PTYPE_L2_ETHER |
 135                         RTE_PTYPE_L3_IPV4;
 136                 break;
 137         case DPAA_PKT_TYPE_IPV6:
 138                 m->packet_type = RTE_PTYPE_L2_ETHER |
 139                         RTE_PTYPE_L3_IPV6;
 140                 break;
 141         case DPAA_PKT_TYPE_IPV4_FRAG:
 142         case DPAA_PKT_TYPE_IPV4_FRAG_UDP:
 143         case DPAA_PKT_TYPE_IPV4_FRAG_TCP:
 144         case DPAA_PKT_TYPE_IPV4_FRAG_SCTP:
 145                 m->packet_type = RTE_PTYPE_L2_ETHER |
 146                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG;
 147                 break;
 148         case DPAA_PKT_TYPE_IPV6_FRAG:
 149         case DPAA_PKT_TYPE_IPV6_FRAG_UDP:
 150         case DPAA_PKT_TYPE_IPV6_FRAG_TCP:
 151         case DPAA_PKT_TYPE_IPV6_FRAG_SCTP:
 152                 m->packet_type = RTE_PTYPE_L2_ETHER |
 153                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG;
 154                 break;
 155         case DPAA_PKT_TYPE_IPV4_EXT:
 156                 m->packet_type = RTE_PTYPE_L2_ETHER |
 157                         RTE_PTYPE_L3_IPV4_EXT;
 158                 break;
 159         case DPAA_PKT_TYPE_IPV6_EXT:
 160                 m->packet_type = RTE_PTYPE_L2_ETHER |
 161                         RTE_PTYPE_L3_IPV6_EXT;
 162                 break;
 163         case DPAA_PKT_TYPE_IPV4_TCP:
 164                 m->packet_type = RTE_PTYPE_L2_ETHER |
 165                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP;
 166                 break;
 167         case DPAA_PKT_TYPE_IPV6_TCP:
 168                 m->packet_type = RTE_PTYPE_L2_ETHER |
 169                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
 170                 break;
 171         case DPAA_PKT_TYPE_IPV4_UDP:
 172                 m->packet_type = RTE_PTYPE_L2_ETHER |
 173                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP;
 174                 break;
 175         case DPAA_PKT_TYPE_IPV6_UDP:
 176                 m->packet_type = RTE_PTYPE_L2_ETHER |
 177                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
 178                 break;
 179         case DPAA_PKT_TYPE_IPV4_EXT_UDP:
 180                 m->packet_type = RTE_PTYPE_L2_ETHER |
 181                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP;
 182                 break;
 183         case DPAA_PKT_TYPE_IPV6_EXT_UDP:
 184                 m->packet_type = RTE_PTYPE_L2_ETHER |
 185                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP;
 186                 break;
 187         case DPAA_PKT_TYPE_IPV4_EXT_TCP:
 188                 m->packet_type = RTE_PTYPE_L2_ETHER |
 189                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP;
 190                 break;
 191         case DPAA_PKT_TYPE_IPV6_EXT_TCP:
 192                 m->packet_type = RTE_PTYPE_L2_ETHER |
 193                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP;
 194                 break;
 195         case DPAA_PKT_TYPE_IPV4_SCTP:
 196                 m->packet_type = RTE_PTYPE_L2_ETHER |
 197                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP;
 198                 break;
 199         case DPAA_PKT_TYPE_IPV6_SCTP:
 200                 m->packet_type = RTE_PTYPE_L2_ETHER |
 201                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_SCTP;
 202                 break;
 203         /* More switch cases can be added */
 204         default:
 205                 dpaa_slow_parsing(m, prs);
 206         }
 207
 208         m->tx_offload = annot->parse.ip_off[0];
 209         m->tx_offload |= (annot->parse.l4_off - annot->parse.ip_off[0])
 210                                         << DPAA_PKT_L3_LEN_SHIFT;
 211
 212         /* Set the hash values */
 213         m->hash.rss = (uint32_t)(rte_be_to_cpu_64(annot->hash));
 214         m->ol_flags = PKT_RX_RSS_HASH;
 215         /* All packets with Bad checksum are dropped by interface (and
 216          * corresponding notification issued to RX error queues).
 217          */
 218         m->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
 219
 220         /* Check if Vlan is present */
 221         if (prs & DPAA_PARSE_VLAN_MASK)
 222                 m->ol_flags |= PKT_RX_VLAN;
 223         /* Packet received without stripping the vlan */
 224 }
 225
 226 static inline void dpaa_checksum(struct rte_mbuf *mbuf)
 227 {
 228         struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf, struct ether_hdr *);
 229         char *l3_hdr = (char *)eth_hdr + mbuf->l2_len;
 230         struct ipv4_hdr *ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 231         struct ipv6_hdr *ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 232
 233         DPAA_DP_LOG(DEBUG, "Calculating checksum for mbuf: %p", mbuf);
 234
 235         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 236             ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 237             RTE_PTYPE_L3_IPV4_EXT)) {
 238                 ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 239                 ipv4_hdr->hdr_checksum = 0;
 240                 ipv4_hdr->hdr_checksum = rte_ipv4_cksum(ipv4_hdr);
 241         } else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 242                    RTE_PTYPE_L3_IPV6) ||
 243                    ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 244                    RTE_PTYPE_L3_IPV6_EXT))
 245                 ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 246
 247         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP) {
 248                 struct tcp_hdr *tcp_hdr = (struct tcp_hdr *)(l3_hdr +
 249                                           mbuf->l3_len);
 250                 tcp_hdr->cksum = 0;
 251                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 252                         tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 253                                                                tcp_hdr);
 254                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 255                         tcp_hdr->cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 256                                                                tcp_hdr);
 257         } else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) ==
 258                    RTE_PTYPE_L4_UDP) {
 259                 struct udp_hdr *udp_hdr = (struct udp_hdr *)(l3_hdr +
 260                                                              mbuf->l3_len);
 261                 udp_hdr->dgram_cksum = 0;
 262                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 263                         udp_hdr->dgram_cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 264                                                                      udp_hdr);
 265                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 266                         udp_hdr->dgram_cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 267                                                                      udp_hdr);
 268         }
 269 }
 270
 271 static inline void dpaa_checksum_offload(struct rte_mbuf *mbuf,
 272                                          struct qm_fd *fd, char *prs_buf)
 273 {
 274         struct dpaa_eth_parse_results_t *prs;
 275
 276         DPAA_DP_LOG(DEBUG, " Offloading checksum for mbuf: %p", mbuf);
 277
 278         prs = GET_TX_PRS(prs_buf);
 279         prs->l3r = 0;
 280         prs->l4r = 0;
 281         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 282            ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 283            RTE_PTYPE_L3_IPV4_EXT))
 284                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV4;
 285         else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 286                    RTE_PTYPE_L3_IPV6) ||
 287                  ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 288                 RTE_PTYPE_L3_IPV6_EXT))
 289                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV6;
 290
 291         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP)
 292                 prs->l4r = DPAA_L4_PARSE_RESULT_TCP;
 293         else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_UDP)
 294                 prs->l4r = DPAA_L4_PARSE_RESULT_UDP;
 295
 296         prs->ip_off[0] = mbuf->l2_len;
 297         prs->l4_off = mbuf->l3_len + mbuf->l2_len;
 298         /* Enable L3 (and L4, if TCP or UDP) HW checksum*/
 299         fd->cmd = DPAA_FD_CMD_RPD | DPAA_FD_CMD_DTC;
 300 }
 301
 302 struct rte_mbuf *
 303 dpaa_eth_sg_to_mbuf(struct qm_fd *fd, uint32_t ifid)
 304 {
 305         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 306         struct rte_mbuf *first_seg, *prev_seg, *cur_seg, *temp;
 307         struct qm_sg_entry *sgt, *sg_temp;
 308         void *vaddr, *sg_vaddr;
 309         int i = 0;
 310         uint8_t fd_offset = fd->offset;
 311
 312         DPAA_DP_LOG(DEBUG, "Received an SG frame");
 313
 314         vaddr = rte_dpaa_mem_ptov(qm_fd_addr(fd));
 315         if (!vaddr) {
 316                 DPAA_PMD_ERR("unable to convert physical address");
 317                 return NULL;
 318         }
 319         sgt = vaddr + fd_offset;
 320         sg_temp = &sgt[i++];
 321         hw_sg_to_cpu(sg_temp);
 322         temp = (struct rte_mbuf *)((char *)vaddr - bp_info->meta_data_size);
 323         sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 324
 325         first_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 326                                                 bp_info->meta_data_size);
 327         first_seg->data_off = sg_temp->offset;
 328         first_seg->data_len = sg_temp->length;
 329         first_seg->pkt_len = sg_temp->length;
 330         rte_mbuf_refcnt_set(first_seg, 1);
 331
 332         first_seg->port = ifid;
 333         first_seg->nb_segs = 1;
 334         first_seg->ol_flags = 0;
 335         prev_seg = first_seg;
 336         while (i < DPAA_SGT_MAX_ENTRIES) {
 337                 sg_temp = &sgt[i++];
 338                 hw_sg_to_cpu(sg_temp);
 339                 sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 340                 cur_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 341                                                       bp_info->meta_data_size);
 342                 cur_seg->data_off = sg_temp->offset;
 343                 cur_seg->data_len = sg_temp->length;
 344                 first_seg->pkt_len += sg_temp->length;
 345                 first_seg->nb_segs += 1;
 346                 rte_mbuf_refcnt_set(cur_seg, 1);
 347                 prev_seg->next = cur_seg;
 348                 if (sg_temp->final) {
 349                         cur_seg->next = NULL;
 350                         break;
 351                 }
 352                 prev_seg = cur_seg;
 353         }
 354
 355         dpaa_eth_packet_info(first_seg, (uint64_t)vaddr);
 356         rte_pktmbuf_free_seg(temp);
 357
 358         return first_seg;
 359 }
 360
 361 static inline struct rte_mbuf *dpaa_eth_fd_to_mbuf(struct qm_fd *fd,
 362                                                         uint32_t ifid)
 363 {
 364         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 365         struct rte_mbuf *mbuf;
 366         void *ptr;
 367         uint8_t format =
 368                 (fd->opaque & DPAA_FD_FORMAT_MASK) >> DPAA_FD_FORMAT_SHIFT;
 369         uint16_t offset =
 370                 (fd->opaque & DPAA_FD_OFFSET_MASK) >> DPAA_FD_OFFSET_SHIFT;
 371         uint32_t length = fd->opaque & DPAA_FD_LENGTH_MASK;
 372
 373         DPAA_DP_LOG(DEBUG, " FD--->MBUF");
 374
 375         if (unlikely(format == qm_fd_sg))
 376                 return dpaa_eth_sg_to_mbuf(fd, ifid);
 377
 378         /* Ignoring case when format != qm_fd_contig */
 379         dpaa_display_frame(fd);
 380         ptr = rte_dpaa_mem_ptov(fd->addr);
 381         /* Ignoring case when ptr would be NULL. That is only possible incase
 382          * of a corrupted packet
 383          */
 384
 385         mbuf = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size);
 386         /* Prefetch the Parse results and packet data to L1 */
 387         rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF));
 388         rte_prefetch0((void *)((uint8_t *)ptr + offset));
 389
 390         mbuf->data_off = offset;
 391         mbuf->data_len = length;
 392         mbuf->pkt_len = length;
 393
 394         mbuf->port = ifid;
 395         mbuf->nb_segs = 1;
 396         mbuf->ol_flags = 0;
 397         mbuf->next = NULL;
 398         rte_mbuf_refcnt_set(mbuf, 1);
 399         dpaa_eth_packet_info(mbuf, (uint64_t)mbuf->buf_addr);
 400
 401         return mbuf;
 402 }
 403
 404 uint16_t dpaa_eth_queue_rx(void *q,
 405                            struct rte_mbuf **bufs,
 406                            uint16_t nb_bufs)
 407 {
 408         struct qman_fq *fq = q;
 409         struct qm_dqrr_entry *dq;
 410         uint32_t num_rx = 0, ifid = ((struct dpaa_if *)fq->dpaa_intf)->ifid;
 411         int ret;
 412
 413         ret = rte_dpaa_portal_init((void *)0);
 414         if (ret) {
 415                 DPAA_PMD_ERR("Failure in affining portal");
 416                 return 0;
 417         }
 418
 419         ret = qman_set_vdq(fq, (nb_bufs > DPAA_MAX_DEQUEUE_NUM_FRAMES) ?
 420                                 DPAA_MAX_DEQUEUE_NUM_FRAMES : nb_bufs);
 421         if (ret)
 422                 return 0;
 423
 424         do {
 425                 dq = qman_dequeue(fq);
 426                 if (!dq)
 427                         continue;
 428                 bufs[num_rx++] = dpaa_eth_fd_to_mbuf(&dq->fd, ifid);
 429                 qman_dqrr_consume(fq, dq);
 430         } while (fq->flags & QMAN_FQ_STATE_VDQCR);
 431
 432         return num_rx;
 433 }
 434
 435 static void *dpaa_get_pktbuf(struct dpaa_bp_info *bp_info)
 436 {
 437         int ret;
 438         uint64_t buf = 0;
 439         struct bm_buffer bufs;
 440
 441         ret = bman_acquire(bp_info->bp, &bufs, 1, 0);
 442         if (ret <= 0) {
 443                 DPAA_PMD_WARN("Failed to allocate buffers %d", ret);
 444                 return (void *)buf;
 445         }
 446
 447         DPAA_DP_LOG(DEBUG, "got buffer 0x%lx from pool %d",
 448                     (uint64_t)bufs.addr, bufs.bpid);
 449
 450         buf = (uint64_t)rte_dpaa_mem_ptov(bufs.addr) - bp_info->meta_data_size;
 451         if (!buf)
 452                 goto out;
 453
 454 out:
 455         return (void *)buf;
 456 }
 457
 458 static struct rte_mbuf *dpaa_get_dmable_mbuf(struct rte_mbuf *mbuf,
 459                                              struct dpaa_if *dpaa_intf)
 460 {
 461         struct rte_mbuf *dpaa_mbuf;
 462
 463         /* allocate pktbuffer on bpid for dpaa port */
 464         dpaa_mbuf = dpaa_get_pktbuf(dpaa_intf->bp_info);
 465         if (!dpaa_mbuf)
 466                 return NULL;
 467
 468         memcpy((uint8_t *)(dpaa_mbuf->buf_addr) + mbuf->data_off, (void *)
 469                 ((uint8_t *)(mbuf->buf_addr) + mbuf->data_off), mbuf->pkt_len);
 470
 471         /* Copy only the required fields */
 472         dpaa_mbuf->data_off = mbuf->data_off;
 473         dpaa_mbuf->pkt_len = mbuf->pkt_len;
 474         dpaa_mbuf->ol_flags = mbuf->ol_flags;
 475         dpaa_mbuf->packet_type = mbuf->packet_type;
 476         dpaa_mbuf->tx_offload = mbuf->tx_offload;
 477         rte_pktmbuf_free(mbuf);
 478         return dpaa_mbuf;
 479 }
 480
 481 int
 482 dpaa_eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf,
 483                 struct qm_fd *fd,
 484                 uint32_t bpid)
 485 {
 486         struct rte_mbuf *cur_seg = mbuf, *prev_seg = NULL;
 487         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(bpid);
 488         struct rte_mbuf *temp, *mi;
 489         struct qm_sg_entry *sg_temp, *sgt;
 490         int i = 0;
 491
 492         DPAA_DP_LOG(DEBUG, "Creating SG FD to transmit");
 493
 494         temp = rte_pktmbuf_alloc(bp_info->mp);
 495         if (!temp) {
 496                 DPAA_PMD_ERR("Failure in allocation of mbuf");
 497                 return -1;
 498         }
 499         if (temp->buf_len < ((mbuf->nb_segs * sizeof(struct qm_sg_entry))
 500                                 + temp->data_off)) {
 501                 DPAA_PMD_ERR("Insufficient space in mbuf for SG entries");
 502                 return -1;
 503         }
 504
 505         fd->cmd = 0;
 506         fd->opaque_addr = 0;
 507
 508         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 509                 if (temp->data_off < DEFAULT_TX_ICEOF
 510                         + sizeof(struct dpaa_eth_parse_results_t))
 511                         temp->data_off = DEFAULT_TX_ICEOF
 512                                 + sizeof(struct dpaa_eth_parse_results_t);
 513                 dcbz_64(temp->buf_addr);
 514                 dpaa_checksum_offload(mbuf, fd, temp->buf_addr);
 515         }
 516
 517         sgt = temp->buf_addr + temp->data_off;
 518         fd->format = QM_FD_SG;
 519         fd->addr = temp->buf_physaddr;
 520         fd->offset = temp->data_off;
 521         fd->bpid = bpid;
 522         fd->length20 = mbuf->pkt_len;
 523
 524         while (i < DPAA_SGT_MAX_ENTRIES) {
 525                 sg_temp = &sgt[i++];
 526                 sg_temp->opaque = 0;
 527                 sg_temp->val = 0;
 528                 sg_temp->addr = cur_seg->buf_physaddr;
 529                 sg_temp->offset = cur_seg->data_off;
 530                 sg_temp->length = cur_seg->data_len;
 531                 if (RTE_MBUF_DIRECT(cur_seg)) {
 532                         if (rte_mbuf_refcnt_read(cur_seg) > 1) {
 533                                 /*If refcnt > 1, invalid bpid is set to ensure
 534                                  * buffer is not freed by HW.
 535                                  */
 536                                 sg_temp->bpid = 0xff;
 537                                 rte_mbuf_refcnt_update(cur_seg, -1);
 538                         } else {
 539                                 sg_temp->bpid =
 540                                         DPAA_MEMPOOL_TO_BPID(cur_seg->pool);
 541                         }
 542                         cur_seg = cur_seg->next;
 543                 } else {
 544                         /* Get owner MBUF from indirect buffer */
 545                         mi = rte_mbuf_from_indirect(cur_seg);
 546                         if (rte_mbuf_refcnt_read(mi) > 1) {
 547                                 /*If refcnt > 1, invalid bpid is set to ensure
 548                                  * owner buffer is not freed by HW.
 549                                  */
 550                                 sg_temp->bpid = 0xff;
 551                         } else {
 552                                 sg_temp->bpid = DPAA_MEMPOOL_TO_BPID(mi->pool);
 553                                 rte_mbuf_refcnt_update(mi, 1);
 554                         }
 555                         prev_seg = cur_seg;
 556                         cur_seg = cur_seg->next;
 557                         prev_seg->next = NULL;
 558                         rte_pktmbuf_free(prev_seg);
 559                 }
 560                 if (cur_seg == NULL) {
 561                         sg_temp->final = 1;
 562                         cpu_to_hw_sg(sg_temp);
 563                         break;
 564                 }
 565                 cpu_to_hw_sg(sg_temp);
 566         }
 567         return 0;
 568 }
 569
 570 /* Handle mbufs which are not segmented (non SG) */
 571 static inline void
 572 tx_on_dpaa_pool_unsegmented(struct rte_mbuf *mbuf,
 573                             struct dpaa_bp_info *bp_info,
 574                             struct qm_fd *fd_arr)
 575 {
 576         struct rte_mbuf *mi = NULL;
 577
 578         if (RTE_MBUF_DIRECT(mbuf)) {
 579                 if (rte_mbuf_refcnt_read(mbuf) > 1) {
 580                         /* In case of direct mbuf and mbuf being cloned,
 581                          * BMAN should _not_ release buffer.
 582                          */
 583                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 584                         /* Buffer should be releasd by EAL */
 585                         rte_mbuf_refcnt_update(mbuf, -1);
 586                 } else {
 587                         /* In case of direct mbuf and no cloning, mbuf can be
 588                          * released by BMAN.
 589                          */
 590                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 591                 }
 592         } else {
 593                 /* This is data-containing core mbuf: 'mi' */
 594                 mi = rte_mbuf_from_indirect(mbuf);
 595                 if (rte_mbuf_refcnt_read(mi) > 1) {
 596                         /* In case of indirect mbuf, and mbuf being cloned,
 597                          * BMAN should _not_ release it and let EAL release
 598                          * it through pktmbuf_free below.
 599                          */
 600                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 601                 } else {
 602                         /* In case of indirect mbuf, and no cloning, core mbuf
 603                          * should be released by BMAN.
 604                          * Increate refcnt of core mbuf so that when
 605                          * pktmbuf_free is called and mbuf is released, EAL
 606                          * doesn't try to release core mbuf which would have
 607                          * been released by BMAN.
 608                          */
 609                         rte_mbuf_refcnt_update(mi, 1);
 610                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 611                 }
 612                 rte_pktmbuf_free(mbuf);
 613         }
 614
 615         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 616                 if (mbuf->data_off < (DEFAULT_TX_ICEOF +
 617                     sizeof(struct dpaa_eth_parse_results_t))) {
 618                         DPAA_DP_LOG(DEBUG, "Checksum offload Err: "
 619                                 "Not enough Headroom "
 620                                 "space for correct Checksum offload."
 621                                 "So Calculating checksum in Software.");
 622                         dpaa_checksum(mbuf);
 623                 } else {
 624                         dpaa_checksum_offload(mbuf, fd_arr, mbuf->buf_addr);
 625                 }
 626         }
 627 }
 628
 629 /* Handle all mbufs on dpaa BMAN managed pool */
 630 static inline uint16_t
 631 tx_on_dpaa_pool(struct rte_mbuf *mbuf,
 632                 struct dpaa_bp_info *bp_info,
 633                 struct qm_fd *fd_arr)
 634 {
 635         DPAA_DP_LOG(DEBUG, "BMAN offloaded buffer, mbuf: %p", mbuf);
 636
 637         if (mbuf->nb_segs == 1) {
 638                 /* Case for non-segmented buffers */
 639                 tx_on_dpaa_pool_unsegmented(mbuf, bp_info, fd_arr);
 640         } else if (mbuf->nb_segs > 1 &&
 641                    mbuf->nb_segs <= DPAA_SGT_MAX_ENTRIES) {
 642                 if (dpaa_eth_mbuf_to_sg_fd(mbuf, fd_arr, bp_info->bpid)) {
 643                         DPAA_PMD_DEBUG("Unable to create Scatter Gather FD");
 644                         return 1;
 645                 }
 646         } else {
 647                 DPAA_PMD_DEBUG("Number of Segments not supported");
 648                 return 1;
 649         }
 650
 651         return 0;
 652 }
 653
 654 /* Handle all mbufs on an external pool (non-dpaa) */
 655 static inline uint16_t
 656 tx_on_external_pool(struct qman_fq *txq, struct rte_mbuf *mbuf,
 657                     struct qm_fd *fd_arr)
 658 {
 659         struct dpaa_if *dpaa_intf = txq->dpaa_intf;
 660         struct rte_mbuf *dmable_mbuf;
 661
 662         DPAA_DP_LOG(DEBUG, "Non-BMAN offloaded buffer."
 663                     "Allocating an offloaded buffer");
 664         dmable_mbuf = dpaa_get_dmable_mbuf(mbuf, dpaa_intf);
 665         if (!dmable_mbuf) {
 666                 DPAA_DP_LOG(DEBUG, "no dpaa buffers.");
 667                 return 1;
 668         }
 669
 670         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, dpaa_intf->bp_info->bpid);
 671
 672         return 0;
 673 }
 674
 675 uint16_t
 676 dpaa_eth_queue_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
 677 {
 678         struct rte_mbuf *mbuf, *mi = NULL;
 679         struct rte_mempool *mp;
 680         struct dpaa_bp_info *bp_info;
 681         struct qm_fd fd_arr[MAX_TX_RING_SLOTS];
 682         uint32_t frames_to_send, loop, i = 0;
 683         uint16_t state;
 684         int ret;
 685
 686         ret = rte_dpaa_portal_init((void *)0);
 687         if (ret) {
 688                 DPAA_PMD_ERR("Failure in affining portal");
 689                 return 0;
 690         }
 691
 692         DPAA_DP_LOG(DEBUG, "Transmitting %d buffers on queue: %p", nb_bufs, q);
 693
 694         while (nb_bufs) {
 695                 frames_to_send = (nb_bufs >> 3) ? MAX_TX_RING_SLOTS : nb_bufs;
 696                 for (loop = 0; loop < frames_to_send; loop++, i++) {
 697                         mbuf = bufs[i];
 698                         if (RTE_MBUF_DIRECT(mbuf)) {
 699                                 mp = mbuf->pool;
 700                         } else {
 701                                 mi = rte_mbuf_from_indirect(mbuf);
 702                                 mp = mi->pool;
 703                         }
 704
 705                         bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
 706                         if (likely(mp->ops_index == bp_info->dpaa_ops_index)) {
 707                                 state = tx_on_dpaa_pool(mbuf, bp_info,
 708                                                         &fd_arr[loop]);
 709                                 if (unlikely(state)) {
 710                                         /* Set frames_to_send & nb_bufs so
 711                                          * that packets are transmitted till
 712                                          * previous frame.
 713                                          */
 714                                         frames_to_send = loop;
 715                                         nb_bufs = loop;
 716                                         goto send_pkts;
 717                                 }
 718                         } else {
 719                                 state = tx_on_external_pool(q, mbuf,
 720                                                             &fd_arr[loop]);
 721                                 if (unlikely(state)) {
 722                                         /* Set frames_to_send & nb_bufs so
 723                                          * that packets are transmitted till
 724                                          * previous frame.
 725                                          */
 726                                         frames_to_send = loop;
 727                                         nb_bufs = loop;
 728                                         goto send_pkts;
 729                                 }
 730                         }
 731                 }
 732
 733 send_pkts:
 734                 loop = 0;
 735                 while (loop < frames_to_send) {
 736                         loop += qman_enqueue_multi(q, &fd_arr[loop],
 737                                         frames_to_send - loop);
 738                 }
 739                 nb_bufs -= frames_to_send;
 740         }
 741
 742         DPAA_DP_LOG(DEBUG, "Transmitted %d buffers on queue: %p", i, q);
 743
 744         return i;
 745 }
 746
 747 uint16_t dpaa_eth_tx_drop_all(void *q  __rte_unused,
 748                               struct rte_mbuf **bufs __rte_unused,
 749                 uint16_t nb_bufs __rte_unused)
 750 {
 751         DPAA_DP_LOG(DEBUG, "Drop all packets");
 752
 753         /* Drop all incoming packets. No need to free packets here
 754          * because the rte_eth f/w frees up the packets through tx_buffer
 755          * callback in case this functions returns count less than nb_bufs
 756          */
 757         return 0;
 758 }