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 <stdio.h>
  36 #include <inttypes.h>
  37 #include <unistd.h>
  38 #include <stdio.h>
  39 #include <limits.h>
  40 #include <sched.h>
  41 #include <pthread.h>
  42
  43 #include <rte_config.h>
  44 #include <rte_byteorder.h>
  45 #include <rte_common.h>
  46 #include <rte_interrupts.h>
  47 #include <rte_log.h>
  48 #include <rte_debug.h>
  49 #include <rte_pci.h>
  50 #include <rte_atomic.h>
  51 #include <rte_branch_prediction.h>
  52 #include <rte_memory.h>
  53 #include <rte_memzone.h>
  54 #include <rte_tailq.h>
  55 #include <rte_eal.h>
  56 #include <rte_alarm.h>
  57 #include <rte_ether.h>
  58 #include <rte_ethdev.h>
  59 #include <rte_atomic.h>
  60 #include <rte_malloc.h>
  61 #include <rte_ring.h>
  62 #include <rte_ip.h>
  63 #include <rte_tcp.h>
  64 #include <rte_udp.h>
  65
  66 #include "dpaa_ethdev.h"
  67 #include "dpaa_rxtx.h"
  68 #include <rte_dpaa_bus.h>
  69 #include <dpaa_mempool.h>
  70
  71 #include <fsl_usd.h>
  72 #include <fsl_qman.h>
  73 #include <fsl_bman.h>
  74 #include <of.h>
  75 #include <netcfg.h>
  76
  77 #define DPAA_MBUF_TO_CONTIG_FD(_mbuf, _fd, _bpid) \
  78         do { \
  79                 (_fd)->cmd = 0; \
  80                 (_fd)->opaque_addr = 0; \
  81                 (_fd)->opaque = QM_FD_CONTIG << DPAA_FD_FORMAT_SHIFT; \
  82                 (_fd)->opaque |= ((_mbuf)->data_off) << DPAA_FD_OFFSET_SHIFT; \
  83                 (_fd)->opaque |= (_mbuf)->pkt_len; \
  84                 (_fd)->addr = (_mbuf)->buf_physaddr; \
  85                 (_fd)->bpid = _bpid; \
  86         } while (0)
  87
  88 #if (defined RTE_LIBRTE_DPAA_DEBUG_DRIVER)
  89 void dpaa_display_frame(const struct qm_fd *fd)
  90 {
  91         int ii;
  92         char *ptr;
  93
  94         printf("%s::bpid %x addr %08x%08x, format %d off %d, len %d stat %x\n",
  95                __func__, fd->bpid, fd->addr_hi, fd->addr_lo, fd->format,
  96                 fd->offset, fd->length20, fd->status);
  97
  98         ptr = (char *)rte_dpaa_mem_ptov(fd->addr);
  99         ptr += fd->offset;
 100         printf("%02x ", *ptr);
 101         for (ii = 1; ii < fd->length20; ii++) {
 102                 printf("%02x ", *ptr);
 103                 if ((ii % 16) == 0)
 104                         printf("\n");
 105                 ptr++;
 106         }
 107         printf("\n");
 108 }
 109 #else
 110 #define dpaa_display_frame(a)
 111 #endif
 112
 113 static inline void dpaa_slow_parsing(struct rte_mbuf *m __rte_unused,
 114                                      uint64_t prs __rte_unused)
 115 {
 116         DPAA_DP_LOG(DEBUG, "Slow parsing");
 117         /*TBD:XXX: to be implemented*/
 118 }
 119
 120 static inline void dpaa_eth_packet_info(struct rte_mbuf *m,
 121                                         uint64_t fd_virt_addr)
 122 {
 123         struct annotations_t *annot = GET_ANNOTATIONS(fd_virt_addr);
 124         uint64_t prs = *((uint64_t *)(&annot->parse)) & DPAA_PARSE_MASK;
 125
 126         DPAA_DP_LOG(DEBUG, " Parsing mbuf: %p with annotations: %p", m, annot);
 127
 128         switch (prs) {
 129         case DPAA_PKT_TYPE_NONE:
 130                 m->packet_type = 0;
 131                 break;
 132         case DPAA_PKT_TYPE_ETHER:
 133                 m->packet_type = RTE_PTYPE_L2_ETHER;
 134                 break;
 135         case DPAA_PKT_TYPE_IPV4:
 136                 m->packet_type = RTE_PTYPE_L2_ETHER |
 137                         RTE_PTYPE_L3_IPV4;
 138                 break;
 139         case DPAA_PKT_TYPE_IPV6:
 140                 m->packet_type = RTE_PTYPE_L2_ETHER |
 141                         RTE_PTYPE_L3_IPV6;
 142                 break;
 143         case DPAA_PKT_TYPE_IPV4_FRAG:
 144         case DPAA_PKT_TYPE_IPV4_FRAG_UDP:
 145         case DPAA_PKT_TYPE_IPV4_FRAG_TCP:
 146         case DPAA_PKT_TYPE_IPV4_FRAG_SCTP:
 147                 m->packet_type = RTE_PTYPE_L2_ETHER |
 148                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG;
 149                 break;
 150         case DPAA_PKT_TYPE_IPV6_FRAG:
 151         case DPAA_PKT_TYPE_IPV6_FRAG_UDP:
 152         case DPAA_PKT_TYPE_IPV6_FRAG_TCP:
 153         case DPAA_PKT_TYPE_IPV6_FRAG_SCTP:
 154                 m->packet_type = RTE_PTYPE_L2_ETHER |
 155                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG;
 156                 break;
 157         case DPAA_PKT_TYPE_IPV4_EXT:
 158                 m->packet_type = RTE_PTYPE_L2_ETHER |
 159                         RTE_PTYPE_L3_IPV4_EXT;
 160                 break;
 161         case DPAA_PKT_TYPE_IPV6_EXT:
 162                 m->packet_type = RTE_PTYPE_L2_ETHER |
 163                         RTE_PTYPE_L3_IPV6_EXT;
 164                 break;
 165         case DPAA_PKT_TYPE_IPV4_TCP:
 166                 m->packet_type = RTE_PTYPE_L2_ETHER |
 167                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP;
 168                 break;
 169         case DPAA_PKT_TYPE_IPV6_TCP:
 170                 m->packet_type = RTE_PTYPE_L2_ETHER |
 171                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
 172                 break;
 173         case DPAA_PKT_TYPE_IPV4_UDP:
 174                 m->packet_type = RTE_PTYPE_L2_ETHER |
 175                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP;
 176                 break;
 177         case DPAA_PKT_TYPE_IPV6_UDP:
 178                 m->packet_type = RTE_PTYPE_L2_ETHER |
 179                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
 180                 break;
 181         case DPAA_PKT_TYPE_IPV4_EXT_UDP:
 182                 m->packet_type = RTE_PTYPE_L2_ETHER |
 183                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP;
 184                 break;
 185         case DPAA_PKT_TYPE_IPV6_EXT_UDP:
 186                 m->packet_type = RTE_PTYPE_L2_ETHER |
 187                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP;
 188                 break;
 189         case DPAA_PKT_TYPE_IPV4_EXT_TCP:
 190                 m->packet_type = RTE_PTYPE_L2_ETHER |
 191                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP;
 192                 break;
 193         case DPAA_PKT_TYPE_IPV6_EXT_TCP:
 194                 m->packet_type = RTE_PTYPE_L2_ETHER |
 195                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP;
 196                 break;
 197         case DPAA_PKT_TYPE_IPV4_SCTP:
 198                 m->packet_type = RTE_PTYPE_L2_ETHER |
 199                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP;
 200                 break;
 201         case DPAA_PKT_TYPE_IPV6_SCTP:
 202                 m->packet_type = RTE_PTYPE_L2_ETHER |
 203                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_SCTP;
 204                 break;
 205         /* More switch cases can be added */
 206         default:
 207                 dpaa_slow_parsing(m, prs);
 208         }
 209
 210         m->tx_offload = annot->parse.ip_off[0];
 211         m->tx_offload |= (annot->parse.l4_off - annot->parse.ip_off[0])
 212                                         << DPAA_PKT_L3_LEN_SHIFT;
 213
 214         /* Set the hash values */
 215         m->hash.rss = (uint32_t)(rte_be_to_cpu_64(annot->hash));
 216         m->ol_flags = PKT_RX_RSS_HASH;
 217         /* All packets with Bad checksum are dropped by interface (and
 218          * corresponding notification issued to RX error queues).
 219          */
 220         m->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
 221
 222         /* Check if Vlan is present */
 223         if (prs & DPAA_PARSE_VLAN_MASK)
 224                 m->ol_flags |= PKT_RX_VLAN_PKT;
 225         /* Packet received without stripping the vlan */
 226 }
 227
 228 static inline void dpaa_checksum(struct rte_mbuf *mbuf)
 229 {
 230         struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf, struct ether_hdr *);
 231         char *l3_hdr = (char *)eth_hdr + mbuf->l2_len;
 232         struct ipv4_hdr *ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 233         struct ipv6_hdr *ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 234
 235         DPAA_DP_LOG(DEBUG, "Calculating checksum for mbuf: %p", mbuf);
 236
 237         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 238             ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 239             RTE_PTYPE_L3_IPV4_EXT)) {
 240                 ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 241                 ipv4_hdr->hdr_checksum = 0;
 242                 ipv4_hdr->hdr_checksum = rte_ipv4_cksum(ipv4_hdr);
 243         } else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 244                    RTE_PTYPE_L3_IPV6) ||
 245                    ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 246                    RTE_PTYPE_L3_IPV6_EXT))
 247                 ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 248
 249         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP) {
 250                 struct tcp_hdr *tcp_hdr = (struct tcp_hdr *)(l3_hdr +
 251                                           mbuf->l3_len);
 252                 tcp_hdr->cksum = 0;
 253                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 254                         tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 255                                                                tcp_hdr);
 256                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 257                         tcp_hdr->cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 258                                                                tcp_hdr);
 259         } else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) ==
 260                    RTE_PTYPE_L4_UDP) {
 261                 struct udp_hdr *udp_hdr = (struct udp_hdr *)(l3_hdr +
 262                                                              mbuf->l3_len);
 263                 udp_hdr->dgram_cksum = 0;
 264                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 265                         udp_hdr->dgram_cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 266                                                                      udp_hdr);
 267                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 268                         udp_hdr->dgram_cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 269                                                                      udp_hdr);
 270         }
 271 }
 272
 273 static inline void dpaa_checksum_offload(struct rte_mbuf *mbuf,
 274                                          struct qm_fd *fd, char *prs_buf)
 275 {
 276         struct dpaa_eth_parse_results_t *prs;
 277
 278         DPAA_DP_LOG(DEBUG, " Offloading checksum for mbuf: %p", mbuf);
 279
 280         prs = GET_TX_PRS(prs_buf);
 281         prs->l3r = 0;
 282         prs->l4r = 0;
 283         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 284            ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 285            RTE_PTYPE_L3_IPV4_EXT))
 286                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV4;
 287         else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 288                    RTE_PTYPE_L3_IPV6) ||
 289                  ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 290                 RTE_PTYPE_L3_IPV6_EXT))
 291                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV6;
 292
 293         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP)
 294                 prs->l4r = DPAA_L4_PARSE_RESULT_TCP;
 295         else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_UDP)
 296                 prs->l4r = DPAA_L4_PARSE_RESULT_UDP;
 297
 298         prs->ip_off[0] = mbuf->l2_len;
 299         prs->l4_off = mbuf->l3_len + mbuf->l2_len;
 300         /* Enable L3 (and L4, if TCP or UDP) HW checksum*/
 301         fd->cmd = DPAA_FD_CMD_RPD | DPAA_FD_CMD_DTC;
 302 }
 303
 304 struct rte_mbuf *
 305 dpaa_eth_sg_to_mbuf(struct qm_fd *fd, uint32_t ifid)
 306 {
 307         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 308         struct rte_mbuf *first_seg, *prev_seg, *cur_seg, *temp;
 309         struct qm_sg_entry *sgt, *sg_temp;
 310         void *vaddr, *sg_vaddr;
 311         int i = 0;
 312         uint8_t fd_offset = fd->offset;
 313
 314         DPAA_DP_LOG(DEBUG, "Received an SG frame");
 315
 316         vaddr = rte_dpaa_mem_ptov(qm_fd_addr(fd));
 317         if (!vaddr) {
 318                 DPAA_PMD_ERR("unable to convert physical address");
 319                 return NULL;
 320         }
 321         sgt = vaddr + fd_offset;
 322         sg_temp = &sgt[i++];
 323         hw_sg_to_cpu(sg_temp);
 324         temp = (struct rte_mbuf *)((char *)vaddr - bp_info->meta_data_size);
 325         sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 326
 327         first_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 328                                                 bp_info->meta_data_size);
 329         first_seg->data_off = sg_temp->offset;
 330         first_seg->data_len = sg_temp->length;
 331         first_seg->pkt_len = sg_temp->length;
 332         rte_mbuf_refcnt_set(first_seg, 1);
 333
 334         first_seg->port = ifid;
 335         first_seg->nb_segs = 1;
 336         first_seg->ol_flags = 0;
 337         prev_seg = first_seg;
 338         while (i < DPAA_SGT_MAX_ENTRIES) {
 339                 sg_temp = &sgt[i++];
 340                 hw_sg_to_cpu(sg_temp);
 341                 sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 342                 cur_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 343                                                       bp_info->meta_data_size);
 344                 cur_seg->data_off = sg_temp->offset;
 345                 cur_seg->data_len = sg_temp->length;
 346                 first_seg->pkt_len += sg_temp->length;
 347                 first_seg->nb_segs += 1;
 348                 rte_mbuf_refcnt_set(cur_seg, 1);
 349                 prev_seg->next = cur_seg;
 350                 if (sg_temp->final) {
 351                         cur_seg->next = NULL;
 352                         break;
 353                 }
 354                 prev_seg = cur_seg;
 355         }
 356
 357         dpaa_eth_packet_info(first_seg, (uint64_t)vaddr);
 358         rte_pktmbuf_free_seg(temp);
 359
 360         return first_seg;
 361 }
 362
 363 static inline struct rte_mbuf *dpaa_eth_fd_to_mbuf(struct qm_fd *fd,
 364                                                         uint32_t ifid)
 365 {
 366         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 367         struct rte_mbuf *mbuf;
 368         void *ptr;
 369         uint8_t format =
 370                 (fd->opaque & DPAA_FD_FORMAT_MASK) >> DPAA_FD_FORMAT_SHIFT;
 371         uint16_t offset =
 372                 (fd->opaque & DPAA_FD_OFFSET_MASK) >> DPAA_FD_OFFSET_SHIFT;
 373         uint32_t length = fd->opaque & DPAA_FD_LENGTH_MASK;
 374
 375         DPAA_DP_LOG(DEBUG, " FD--->MBUF");
 376
 377         if (unlikely(format == qm_fd_sg))
 378                 return dpaa_eth_sg_to_mbuf(fd, ifid);
 379
 380         /* Ignoring case when format != qm_fd_contig */
 381         dpaa_display_frame(fd);
 382         ptr = rte_dpaa_mem_ptov(fd->addr);
 383         /* Ignoring case when ptr would be NULL. That is only possible incase
 384          * of a corrupted packet
 385          */
 386
 387         mbuf = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size);
 388         /* Prefetch the Parse results and packet data to L1 */
 389         rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF));
 390         rte_prefetch0((void *)((uint8_t *)ptr + offset));
 391
 392         mbuf->data_off = offset;
 393         mbuf->data_len = length;
 394         mbuf->pkt_len = length;
 395
 396         mbuf->port = ifid;
 397         mbuf->nb_segs = 1;
 398         mbuf->ol_flags = 0;
 399         mbuf->next = NULL;
 400         rte_mbuf_refcnt_set(mbuf, 1);
 401         dpaa_eth_packet_info(mbuf, (uint64_t)mbuf->buf_addr);
 402
 403         return mbuf;
 404 }
 405
 406 uint16_t dpaa_eth_queue_rx(void *q,
 407                            struct rte_mbuf **bufs,
 408                            uint16_t nb_bufs)
 409 {
 410         struct qman_fq *fq = q;
 411         struct qm_dqrr_entry *dq;
 412         uint32_t num_rx = 0, ifid = ((struct dpaa_if *)fq->dpaa_intf)->ifid;
 413         int ret;
 414
 415         ret = rte_dpaa_portal_init((void *)0);
 416         if (ret) {
 417                 DPAA_PMD_ERR("Failure in affining portal");
 418                 return 0;
 419         }
 420
 421         ret = qman_set_vdq(fq, (nb_bufs > DPAA_MAX_DEQUEUE_NUM_FRAMES) ?
 422                                 DPAA_MAX_DEQUEUE_NUM_FRAMES : nb_bufs);
 423         if (ret)
 424                 return 0;
 425
 426         do {
 427                 dq = qman_dequeue(fq);
 428                 if (!dq)
 429                         continue;
 430                 bufs[num_rx++] = dpaa_eth_fd_to_mbuf(&dq->fd, ifid);
 431                 qman_dqrr_consume(fq, dq);
 432         } while (fq->flags & QMAN_FQ_STATE_VDQCR);
 433
 434         return num_rx;
 435 }
 436
 437 static void *dpaa_get_pktbuf(struct dpaa_bp_info *bp_info)
 438 {
 439         int ret;
 440         uint64_t buf = 0;
 441         struct bm_buffer bufs;
 442
 443         ret = bman_acquire(bp_info->bp, &bufs, 1, 0);
 444         if (ret <= 0) {
 445                 DPAA_PMD_WARN("Failed to allocate buffers %d", ret);
 446                 return (void *)buf;
 447         }
 448
 449         DPAA_DP_LOG(DEBUG, "got buffer 0x%lx from pool %d",
 450                     (uint64_t)bufs.addr, bufs.bpid);
 451
 452         buf = (uint64_t)rte_dpaa_mem_ptov(bufs.addr) - bp_info->meta_data_size;
 453         if (!buf)
 454                 goto out;
 455
 456 out:
 457         return (void *)buf;
 458 }
 459
 460 static struct rte_mbuf *dpaa_get_dmable_mbuf(struct rte_mbuf *mbuf,
 461                                              struct dpaa_if *dpaa_intf)
 462 {
 463         struct rte_mbuf *dpaa_mbuf;
 464
 465         /* allocate pktbuffer on bpid for dpaa port */
 466         dpaa_mbuf = dpaa_get_pktbuf(dpaa_intf->bp_info);
 467         if (!dpaa_mbuf)
 468                 return NULL;
 469
 470         memcpy((uint8_t *)(dpaa_mbuf->buf_addr) + mbuf->data_off, (void *)
 471                 ((uint8_t *)(mbuf->buf_addr) + mbuf->data_off), mbuf->pkt_len);
 472
 473         /* Copy only the required fields */
 474         dpaa_mbuf->data_off = mbuf->data_off;
 475         dpaa_mbuf->pkt_len = mbuf->pkt_len;
 476         dpaa_mbuf->ol_flags = mbuf->ol_flags;
 477         dpaa_mbuf->packet_type = mbuf->packet_type;
 478         dpaa_mbuf->tx_offload = mbuf->tx_offload;
 479         rte_pktmbuf_free(mbuf);
 480         return dpaa_mbuf;
 481 }
 482
 483 int
 484 dpaa_eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf,
 485                 struct qm_fd *fd,
 486                 uint32_t bpid)
 487 {
 488         struct rte_mbuf *cur_seg = mbuf, *prev_seg = NULL;
 489         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(bpid);
 490         struct rte_mbuf *temp, *mi;
 491         struct qm_sg_entry *sg_temp, *sgt;
 492         int i = 0;
 493
 494         DPAA_DP_LOG(DEBUG, "Creating SG FD to transmit");
 495
 496         temp = rte_pktmbuf_alloc(bp_info->mp);
 497         if (!temp) {
 498                 DPAA_PMD_ERR("Failure in allocation of mbuf");
 499                 return -1;
 500         }
 501         if (temp->buf_len < ((mbuf->nb_segs * sizeof(struct qm_sg_entry))
 502                                 + temp->data_off)) {
 503                 DPAA_PMD_ERR("Insufficient space in mbuf for SG entries");
 504                 return -1;
 505         }
 506
 507         fd->cmd = 0;
 508         fd->opaque_addr = 0;
 509
 510         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 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_physaddr;
 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_physaddr;
 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                 if (mbuf->data_off < (DEFAULT_TX_ICEOF +
 619                     sizeof(struct dpaa_eth_parse_results_t))) {
 620                         DPAA_DP_LOG(DEBUG, "Checksum offload Err: "
 621                                 "Not enough Headroom "
 622                                 "space for correct Checksum offload."
 623                                 "So Calculating checksum in Software.");
 624                         dpaa_checksum(mbuf);
 625                 } else {
 626                         dpaa_checksum_offload(mbuf, fd_arr, mbuf->buf_addr);
 627                 }
 628         }
 629 }
 630
 631 /* Handle all mbufs on dpaa BMAN managed pool */
 632 static inline uint16_t
 633 tx_on_dpaa_pool(struct rte_mbuf *mbuf,
 634                 struct dpaa_bp_info *bp_info,
 635                 struct qm_fd *fd_arr)
 636 {
 637         DPAA_DP_LOG(DEBUG, "BMAN offloaded buffer, mbuf: %p", mbuf);
 638
 639         if (mbuf->nb_segs == 1) {
 640                 /* Case for non-segmented buffers */
 641                 tx_on_dpaa_pool_unsegmented(mbuf, bp_info, fd_arr);
 642         } else if (mbuf->nb_segs > 1 &&
 643                    mbuf->nb_segs <= DPAA_SGT_MAX_ENTRIES) {
 644                 if (dpaa_eth_mbuf_to_sg_fd(mbuf, fd_arr, bp_info->bpid)) {
 645                         DPAA_PMD_DEBUG("Unable to create Scatter Gather FD");
 646                         return 1;
 647                 }
 648         } else {
 649                 DPAA_PMD_DEBUG("Number of Segments not supported");
 650                 return 1;
 651         }
 652
 653         return 0;
 654 }
 655
 656 /* Handle all mbufs on an external pool (non-dpaa) */
 657 static inline uint16_t
 658 tx_on_external_pool(struct qman_fq *txq, struct rte_mbuf *mbuf,
 659                     struct qm_fd *fd_arr)
 660 {
 661         struct dpaa_if *dpaa_intf = txq->dpaa_intf;
 662         struct rte_mbuf *dmable_mbuf;
 663
 664         DPAA_DP_LOG(DEBUG, "Non-BMAN offloaded buffer."
 665                     "Allocating an offloaded buffer");
 666         dmable_mbuf = dpaa_get_dmable_mbuf(mbuf, dpaa_intf);
 667         if (!dmable_mbuf) {
 668                 DPAA_DP_LOG(DEBUG, "no dpaa buffers.");
 669                 return 1;
 670         }
 671
 672         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, dpaa_intf->bp_info->bpid);
 673
 674         return 0;
 675 }
 676
 677 uint16_t
 678 dpaa_eth_queue_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
 679 {
 680         struct rte_mbuf *mbuf, *mi = NULL;
 681         struct rte_mempool *mp;
 682         struct dpaa_bp_info *bp_info;
 683         struct qm_fd fd_arr[MAX_TX_RING_SLOTS];
 684         uint32_t frames_to_send, loop, i = 0;
 685         uint16_t state;
 686         int ret;
 687
 688         ret = rte_dpaa_portal_init((void *)0);
 689         if (ret) {
 690                 DPAA_PMD_ERR("Failure in affining portal");
 691                 return 0;
 692         }
 693
 694         DPAA_DP_LOG(DEBUG, "Transmitting %d buffers on queue: %p", nb_bufs, q);
 695
 696         while (nb_bufs) {
 697                 frames_to_send = (nb_bufs >> 3) ? MAX_TX_RING_SLOTS : nb_bufs;
 698                 for (loop = 0; loop < frames_to_send; loop++, i++) {
 699                         mbuf = bufs[i];
 700                         if (RTE_MBUF_DIRECT(mbuf)) {
 701                                 mp = mbuf->pool;
 702                         } else {
 703                                 mi = rte_mbuf_from_indirect(mbuf);
 704                                 mp = mi->pool;
 705                         }
 706
 707                         bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
 708                         if (likely(mp->ops_index == bp_info->dpaa_ops_index)) {
 709                                 state = tx_on_dpaa_pool(mbuf, bp_info,
 710                                                         &fd_arr[loop]);
 711                                 if (unlikely(state)) {
 712                                         /* Set frames_to_send & nb_bufs so
 713                                          * that packets are transmitted till
 714                                          * previous frame.
 715                                          */
 716                                         frames_to_send = loop;
 717                                         nb_bufs = loop;
 718                                         goto send_pkts;
 719                                 }
 720                         } else {
 721                                 state = tx_on_external_pool(q, mbuf,
 722                                                             &fd_arr[loop]);
 723                                 if (unlikely(state)) {
 724                                         /* Set frames_to_send & nb_bufs so
 725                                          * that packets are transmitted till
 726                                          * previous frame.
 727                                          */
 728                                         frames_to_send = loop;
 729                                         nb_bufs = loop;
 730                                         goto send_pkts;
 731                                 }
 732                         }
 733                 }
 734
 735 send_pkts:
 736                 loop = 0;
 737                 while (loop < frames_to_send) {
 738                         loop += qman_enqueue_multi(q, &fd_arr[loop],
 739                                         frames_to_send - loop);
 740                 }
 741                 nb_bufs -= frames_to_send;
 742         }
 743
 744         DPAA_DP_LOG(DEBUG, "Transmitted %d buffers on queue: %p", i, q);
 745
 746         return i;
 747 }
 748
 749 uint16_t dpaa_eth_tx_drop_all(void *q  __rte_unused,
 750                               struct rte_mbuf **bufs __rte_unused,
 751                 uint16_t nb_bufs __rte_unused)
 752 {
 753         DPAA_DP_LOG(DEBUG, "Drop all packets");
 754
 755         /* Drop all incoming packets. No need to free packets here
 756          * because the rte_eth f/w frees up the packets through tx_buffer
 757          * callback in case this functions returns count less than nb_bufs
 758          */
 759         return 0;
 760 }