drivers/net/dpaa/dpaa_rxtx.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  *   Copyright 2016 Freescale Semiconductor, Inc. All rights reserved.
   4  *   Copyright 2017 NXP
   5  *
   6  */
   7
   8 /* System headers */
   9 #include <inttypes.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <limits.h>
  13 #include <sched.h>
  14 #include <pthread.h>
  15
  16 #include <rte_byteorder.h>
  17 #include <rte_common.h>
  18 #include <rte_interrupts.h>
  19 #include <rte_log.h>
  20 #include <rte_debug.h>
  21 #include <rte_pci.h>
  22 #include <rte_atomic.h>
  23 #include <rte_branch_prediction.h>
  24 #include <rte_memory.h>
  25 #include <rte_tailq.h>
  26 #include <rte_eal.h>
  27 #include <rte_alarm.h>
  28 #include <rte_ether.h>
  29 #include <rte_ethdev.h>
  30 #include <rte_malloc.h>
  31 #include <rte_ring.h>
  32 #include <rte_ip.h>
  33 #include <rte_tcp.h>
  34 #include <rte_udp.h>
  35 #include <rte_net.h>
  36
  37 #include "dpaa_ethdev.h"
  38 #include "dpaa_rxtx.h"
  39 #include <rte_dpaa_bus.h>
  40 #include <dpaa_mempool.h>
  41
  42 #include <fsl_usd.h>
  43 #include <fsl_qman.h>
  44 #include <fsl_bman.h>
  45 #include <of.h>
  46 #include <netcfg.h>
  47
  48 #define DPAA_MBUF_TO_CONTIG_FD(_mbuf, _fd, _bpid) \
  49         do { \
  50                 (_fd)->cmd = 0; \
  51                 (_fd)->opaque_addr = 0; \
  52                 (_fd)->opaque = QM_FD_CONTIG << DPAA_FD_FORMAT_SHIFT; \
  53                 (_fd)->opaque |= ((_mbuf)->data_off) << DPAA_FD_OFFSET_SHIFT; \
  54                 (_fd)->opaque |= (_mbuf)->pkt_len; \
  55                 (_fd)->addr = (_mbuf)->buf_iova; \
  56                 (_fd)->bpid = _bpid; \
  57         } while (0)
  58
  59 #if (defined RTE_LIBRTE_DPAA_DEBUG_DRIVER)
  60 void dpaa_display_frame(const struct qm_fd *fd)
  61 {
  62         int ii;
  63         char *ptr;
  64
  65         printf("%s::bpid %x addr %08x%08x, format %d off %d, len %d stat %x\n",
  66                __func__, fd->bpid, fd->addr_hi, fd->addr_lo, fd->format,
  67                 fd->offset, fd->length20, fd->status);
  68
  69         ptr = (char *)rte_dpaa_mem_ptov(fd->addr);
  70         ptr += fd->offset;
  71         printf("%02x ", *ptr);
  72         for (ii = 1; ii < fd->length20; ii++) {
  73                 printf("%02x ", *ptr);
  74                 if ((ii % 16) == 0)
  75                         printf("\n");
  76                 ptr++;
  77         }
  78         printf("\n");
  79 }
  80 #else
  81 #define dpaa_display_frame(a)
  82 #endif
  83
  84 static inline void dpaa_slow_parsing(struct rte_mbuf *m __rte_unused,
  85                                      uint64_t prs __rte_unused)
  86 {
  87         DPAA_DP_LOG(DEBUG, "Slow parsing");
  88         /*TBD:XXX: to be implemented*/
  89 }
  90
  91 static inline void dpaa_eth_packet_info(struct rte_mbuf *m,
  92                                         uint64_t fd_virt_addr)
  93 {
  94         struct annotations_t *annot = GET_ANNOTATIONS(fd_virt_addr);
  95         uint64_t prs = *((uint64_t *)(&annot->parse)) & DPAA_PARSE_MASK;
  96
  97         DPAA_DP_LOG(DEBUG, " Parsing mbuf: %p with annotations: %p", m, annot);
  98
  99         switch (prs) {
 100         case DPAA_PKT_TYPE_NONE:
 101                 m->packet_type = 0;
 102                 break;
 103         case DPAA_PKT_TYPE_ETHER:
 104                 m->packet_type = RTE_PTYPE_L2_ETHER;
 105                 break;
 106         case DPAA_PKT_TYPE_IPV4:
 107                 m->packet_type = RTE_PTYPE_L2_ETHER |
 108                         RTE_PTYPE_L3_IPV4;
 109                 break;
 110         case DPAA_PKT_TYPE_IPV6:
 111                 m->packet_type = RTE_PTYPE_L2_ETHER |
 112                         RTE_PTYPE_L3_IPV6;
 113                 break;
 114         case DPAA_PKT_TYPE_IPV4_FRAG:
 115         case DPAA_PKT_TYPE_IPV4_FRAG_UDP:
 116         case DPAA_PKT_TYPE_IPV4_FRAG_TCP:
 117         case DPAA_PKT_TYPE_IPV4_FRAG_SCTP:
 118                 m->packet_type = RTE_PTYPE_L2_ETHER |
 119                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG;
 120                 break;
 121         case DPAA_PKT_TYPE_IPV6_FRAG:
 122         case DPAA_PKT_TYPE_IPV6_FRAG_UDP:
 123         case DPAA_PKT_TYPE_IPV6_FRAG_TCP:
 124         case DPAA_PKT_TYPE_IPV6_FRAG_SCTP:
 125                 m->packet_type = RTE_PTYPE_L2_ETHER |
 126                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG;
 127                 break;
 128         case DPAA_PKT_TYPE_IPV4_EXT:
 129                 m->packet_type = RTE_PTYPE_L2_ETHER |
 130                         RTE_PTYPE_L3_IPV4_EXT;
 131                 break;
 132         case DPAA_PKT_TYPE_IPV6_EXT:
 133                 m->packet_type = RTE_PTYPE_L2_ETHER |
 134                         RTE_PTYPE_L3_IPV6_EXT;
 135                 break;
 136         case DPAA_PKT_TYPE_IPV4_TCP:
 137                 m->packet_type = RTE_PTYPE_L2_ETHER |
 138                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP;
 139                 break;
 140         case DPAA_PKT_TYPE_IPV6_TCP:
 141                 m->packet_type = RTE_PTYPE_L2_ETHER |
 142                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
 143                 break;
 144         case DPAA_PKT_TYPE_IPV4_UDP:
 145                 m->packet_type = RTE_PTYPE_L2_ETHER |
 146                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP;
 147                 break;
 148         case DPAA_PKT_TYPE_IPV6_UDP:
 149                 m->packet_type = RTE_PTYPE_L2_ETHER |
 150                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
 151                 break;
 152         case DPAA_PKT_TYPE_IPV4_EXT_UDP:
 153                 m->packet_type = RTE_PTYPE_L2_ETHER |
 154                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP;
 155                 break;
 156         case DPAA_PKT_TYPE_IPV6_EXT_UDP:
 157                 m->packet_type = RTE_PTYPE_L2_ETHER |
 158                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP;
 159                 break;
 160         case DPAA_PKT_TYPE_IPV4_EXT_TCP:
 161                 m->packet_type = RTE_PTYPE_L2_ETHER |
 162                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP;
 163                 break;
 164         case DPAA_PKT_TYPE_IPV6_EXT_TCP:
 165                 m->packet_type = RTE_PTYPE_L2_ETHER |
 166                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP;
 167                 break;
 168         case DPAA_PKT_TYPE_IPV4_SCTP:
 169                 m->packet_type = RTE_PTYPE_L2_ETHER |
 170                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP;
 171                 break;
 172         case DPAA_PKT_TYPE_IPV6_SCTP:
 173                 m->packet_type = RTE_PTYPE_L2_ETHER |
 174                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_SCTP;
 175                 break;
 176         /* More switch cases can be added */
 177         default:
 178                 dpaa_slow_parsing(m, prs);
 179         }
 180
 181         m->tx_offload = annot->parse.ip_off[0];
 182         m->tx_offload |= (annot->parse.l4_off - annot->parse.ip_off[0])
 183                                         << DPAA_PKT_L3_LEN_SHIFT;
 184
 185         /* Set the hash values */
 186         m->hash.rss = (uint32_t)(rte_be_to_cpu_64(annot->hash));
 187         m->ol_flags = PKT_RX_RSS_HASH;
 188         /* All packets with Bad checksum are dropped by interface (and
 189          * corresponding notification issued to RX error queues).
 190          */
 191         m->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
 192
 193         /* Check if Vlan is present */
 194         if (prs & DPAA_PARSE_VLAN_MASK)
 195                 m->ol_flags |= PKT_RX_VLAN;
 196         /* Packet received without stripping the vlan */
 197 }
 198
 199 static inline void dpaa_checksum(struct rte_mbuf *mbuf)
 200 {
 201         struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf, struct ether_hdr *);
 202         char *l3_hdr = (char *)eth_hdr + mbuf->l2_len;
 203         struct ipv4_hdr *ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 204         struct ipv6_hdr *ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 205
 206         DPAA_DP_LOG(DEBUG, "Calculating checksum for mbuf: %p", mbuf);
 207
 208         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 209             ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 210             RTE_PTYPE_L3_IPV4_EXT)) {
 211                 ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 212                 ipv4_hdr->hdr_checksum = 0;
 213                 ipv4_hdr->hdr_checksum = rte_ipv4_cksum(ipv4_hdr);
 214         } else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 215                    RTE_PTYPE_L3_IPV6) ||
 216                    ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 217                    RTE_PTYPE_L3_IPV6_EXT))
 218                 ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 219
 220         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP) {
 221                 struct tcp_hdr *tcp_hdr = (struct tcp_hdr *)(l3_hdr +
 222                                           mbuf->l3_len);
 223                 tcp_hdr->cksum = 0;
 224                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 225                         tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 226                                                                tcp_hdr);
 227                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 228                         tcp_hdr->cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 229                                                                tcp_hdr);
 230         } else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) ==
 231                    RTE_PTYPE_L4_UDP) {
 232                 struct udp_hdr *udp_hdr = (struct udp_hdr *)(l3_hdr +
 233                                                              mbuf->l3_len);
 234                 udp_hdr->dgram_cksum = 0;
 235                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 236                         udp_hdr->dgram_cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 237                                                                      udp_hdr);
 238                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 239                         udp_hdr->dgram_cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 240                                                                      udp_hdr);
 241         }
 242 }
 243
 244 static inline void dpaa_checksum_offload(struct rte_mbuf *mbuf,
 245                                          struct qm_fd *fd, char *prs_buf)
 246 {
 247         struct dpaa_eth_parse_results_t *prs;
 248
 249         DPAA_DP_LOG(DEBUG, " Offloading checksum for mbuf: %p", mbuf);
 250
 251         prs = GET_TX_PRS(prs_buf);
 252         prs->l3r = 0;
 253         prs->l4r = 0;
 254         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 255            ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 256            RTE_PTYPE_L3_IPV4_EXT))
 257                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV4;
 258         else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 259                    RTE_PTYPE_L3_IPV6) ||
 260                  ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 261                 RTE_PTYPE_L3_IPV6_EXT))
 262                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV6;
 263
 264         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP)
 265                 prs->l4r = DPAA_L4_PARSE_RESULT_TCP;
 266         else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_UDP)
 267                 prs->l4r = DPAA_L4_PARSE_RESULT_UDP;
 268
 269         prs->ip_off[0] = mbuf->l2_len;
 270         prs->l4_off = mbuf->l3_len + mbuf->l2_len;
 271         /* Enable L3 (and L4, if TCP or UDP) HW checksum*/
 272         fd->cmd = DPAA_FD_CMD_RPD | DPAA_FD_CMD_DTC;
 273 }
 274
 275 static inline void
 276 dpaa_unsegmented_checksum(struct rte_mbuf *mbuf, struct qm_fd *fd_arr)
 277 {
 278         if (!mbuf->packet_type) {
 279                 struct rte_net_hdr_lens hdr_lens;
 280
 281                 mbuf->packet_type = rte_net_get_ptype(mbuf, &hdr_lens,
 282                                 RTE_PTYPE_L2_MASK | RTE_PTYPE_L3_MASK
 283                                 | RTE_PTYPE_L4_MASK);
 284                 mbuf->l2_len = hdr_lens.l2_len;
 285                 mbuf->l3_len = hdr_lens.l3_len;
 286         }
 287         if (mbuf->data_off < (DEFAULT_TX_ICEOF +
 288             sizeof(struct dpaa_eth_parse_results_t))) {
 289                 DPAA_DP_LOG(DEBUG, "Checksum offload Err: "
 290                         "Not enough Headroom "
 291                         "space for correct Checksum offload."
 292                         "So Calculating checksum in Software.");
 293                 dpaa_checksum(mbuf);
 294         } else {
 295                 dpaa_checksum_offload(mbuf, fd_arr, mbuf->buf_addr);
 296         }
 297 }
 298
 299 struct rte_mbuf *
 300 dpaa_eth_sg_to_mbuf(struct qm_fd *fd, uint32_t ifid)
 301 {
 302         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 303         struct rte_mbuf *first_seg, *prev_seg, *cur_seg, *temp;
 304         struct qm_sg_entry *sgt, *sg_temp;
 305         void *vaddr, *sg_vaddr;
 306         int i = 0;
 307         uint8_t fd_offset = fd->offset;
 308
 309         DPAA_DP_LOG(DEBUG, "Received an SG frame");
 310
 311         vaddr = rte_dpaa_mem_ptov(qm_fd_addr(fd));
 312         if (!vaddr) {
 313                 DPAA_PMD_ERR("unable to convert physical address");
 314                 return NULL;
 315         }
 316         sgt = vaddr + fd_offset;
 317         sg_temp = &sgt[i++];
 318         hw_sg_to_cpu(sg_temp);
 319         temp = (struct rte_mbuf *)((char *)vaddr - bp_info->meta_data_size);
 320         sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 321
 322         first_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 323                                                 bp_info->meta_data_size);
 324         first_seg->data_off = sg_temp->offset;
 325         first_seg->data_len = sg_temp->length;
 326         first_seg->pkt_len = sg_temp->length;
 327         rte_mbuf_refcnt_set(first_seg, 1);
 328
 329         first_seg->port = ifid;
 330         first_seg->nb_segs = 1;
 331         first_seg->ol_flags = 0;
 332         prev_seg = first_seg;
 333         while (i < DPAA_SGT_MAX_ENTRIES) {
 334                 sg_temp = &sgt[i++];
 335                 hw_sg_to_cpu(sg_temp);
 336                 sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 337                 cur_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 338                                                       bp_info->meta_data_size);
 339                 cur_seg->data_off = sg_temp->offset;
 340                 cur_seg->data_len = sg_temp->length;
 341                 first_seg->pkt_len += sg_temp->length;
 342                 first_seg->nb_segs += 1;
 343                 rte_mbuf_refcnt_set(cur_seg, 1);
 344                 prev_seg->next = cur_seg;
 345                 if (sg_temp->final) {
 346                         cur_seg->next = NULL;
 347                         break;
 348                 }
 349                 prev_seg = cur_seg;
 350         }
 351
 352         dpaa_eth_packet_info(first_seg, (uint64_t)vaddr);
 353         rte_pktmbuf_free_seg(temp);
 354
 355         return first_seg;
 356 }
 357
 358 static inline struct rte_mbuf *dpaa_eth_fd_to_mbuf(struct qm_fd *fd,
 359                                                         uint32_t ifid)
 360 {
 361         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 362         struct rte_mbuf *mbuf;
 363         void *ptr;
 364         uint8_t format =
 365                 (fd->opaque & DPAA_FD_FORMAT_MASK) >> DPAA_FD_FORMAT_SHIFT;
 366         uint16_t offset =
 367                 (fd->opaque & DPAA_FD_OFFSET_MASK) >> DPAA_FD_OFFSET_SHIFT;
 368         uint32_t length = fd->opaque & DPAA_FD_LENGTH_MASK;
 369
 370         DPAA_DP_LOG(DEBUG, " FD--->MBUF");
 371
 372         if (unlikely(format == qm_fd_sg))
 373                 return dpaa_eth_sg_to_mbuf(fd, ifid);
 374
 375         /* Ignoring case when format != qm_fd_contig */
 376         dpaa_display_frame(fd);
 377         ptr = rte_dpaa_mem_ptov(fd->addr);
 378         /* Ignoring case when ptr would be NULL. That is only possible incase
 379          * of a corrupted packet
 380          */
 381
 382         mbuf = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size);
 383         /* Prefetch the Parse results and packet data to L1 */
 384         rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF));
 385         rte_prefetch0((void *)((uint8_t *)ptr + offset));
 386
 387         mbuf->data_off = offset;
 388         mbuf->data_len = length;
 389         mbuf->pkt_len = length;
 390
 391         mbuf->port = ifid;
 392         mbuf->nb_segs = 1;
 393         mbuf->ol_flags = 0;
 394         mbuf->next = NULL;
 395         rte_mbuf_refcnt_set(mbuf, 1);
 396         dpaa_eth_packet_info(mbuf, (uint64_t)mbuf->buf_addr);
 397
 398         return mbuf;
 399 }
 400
 401 uint16_t dpaa_eth_queue_rx(void *q,
 402                            struct rte_mbuf **bufs,
 403                            uint16_t nb_bufs)
 404 {
 405         struct qman_fq *fq = q;
 406         struct qm_dqrr_entry *dq;
 407         uint32_t num_rx = 0, ifid = ((struct dpaa_if *)fq->dpaa_intf)->ifid;
 408         int ret;
 409
 410         ret = rte_dpaa_portal_init((void *)0);
 411         if (ret) {
 412                 DPAA_PMD_ERR("Failure in affining portal");
 413                 return 0;
 414         }
 415
 416         ret = qman_set_vdq(fq, (nb_bufs > DPAA_MAX_DEQUEUE_NUM_FRAMES) ?
 417                                 DPAA_MAX_DEQUEUE_NUM_FRAMES : nb_bufs);
 418         if (ret)
 419                 return 0;
 420
 421         do {
 422                 dq = qman_dequeue(fq);
 423                 if (!dq)
 424                         continue;
 425                 bufs[num_rx++] = dpaa_eth_fd_to_mbuf(&dq->fd, ifid);
 426                 qman_dqrr_consume(fq, dq);
 427         } while (fq->flags & QMAN_FQ_STATE_VDQCR);
 428
 429         return num_rx;
 430 }
 431
 432 static void *dpaa_get_pktbuf(struct dpaa_bp_info *bp_info)
 433 {
 434         int ret;
 435         uint64_t buf = 0;
 436         struct bm_buffer bufs;
 437
 438         ret = bman_acquire(bp_info->bp, &bufs, 1, 0);
 439         if (ret <= 0) {
 440                 DPAA_PMD_WARN("Failed to allocate buffers %d", ret);
 441                 return (void *)buf;
 442         }
 443
 444         DPAA_DP_LOG(DEBUG, "got buffer 0x%lx from pool %d",
 445                     (uint64_t)bufs.addr, bufs.bpid);
 446
 447         buf = (uint64_t)rte_dpaa_mem_ptov(bufs.addr) - bp_info->meta_data_size;
 448         if (!buf)
 449                 goto out;
 450
 451 out:
 452         return (void *)buf;
 453 }
 454
 455 static struct rte_mbuf *dpaa_get_dmable_mbuf(struct rte_mbuf *mbuf,
 456                                              struct dpaa_if *dpaa_intf)
 457 {
 458         struct rte_mbuf *dpaa_mbuf;
 459
 460         /* allocate pktbuffer on bpid for dpaa port */
 461         dpaa_mbuf = dpaa_get_pktbuf(dpaa_intf->bp_info);
 462         if (!dpaa_mbuf)
 463                 return NULL;
 464
 465         memcpy((uint8_t *)(dpaa_mbuf->buf_addr) + mbuf->data_off, (void *)
 466                 ((uint8_t *)(mbuf->buf_addr) + mbuf->data_off), mbuf->pkt_len);
 467
 468         /* Copy only the required fields */
 469         dpaa_mbuf->data_off = mbuf->data_off;
 470         dpaa_mbuf->pkt_len = mbuf->pkt_len;
 471         dpaa_mbuf->ol_flags = mbuf->ol_flags;
 472         dpaa_mbuf->packet_type = mbuf->packet_type;
 473         dpaa_mbuf->tx_offload = mbuf->tx_offload;
 474         rte_pktmbuf_free(mbuf);
 475         return dpaa_mbuf;
 476 }
 477
 478 int
 479 dpaa_eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf,
 480                 struct qm_fd *fd,
 481                 uint32_t bpid)
 482 {
 483         struct rte_mbuf *cur_seg = mbuf, *prev_seg = NULL;
 484         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(bpid);
 485         struct rte_mbuf *temp, *mi;
 486         struct qm_sg_entry *sg_temp, *sgt;
 487         int i = 0;
 488
 489         DPAA_DP_LOG(DEBUG, "Creating SG FD to transmit");
 490
 491         temp = rte_pktmbuf_alloc(bp_info->mp);
 492         if (!temp) {
 493                 DPAA_PMD_ERR("Failure in allocation of mbuf");
 494                 return -1;
 495         }
 496         if (temp->buf_len < ((mbuf->nb_segs * sizeof(struct qm_sg_entry))
 497                                 + temp->data_off)) {
 498                 DPAA_PMD_ERR("Insufficient space in mbuf for SG entries");
 499                 return -1;
 500         }
 501
 502         fd->cmd = 0;
 503         fd->opaque_addr = 0;
 504
 505         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 506                 if (!mbuf->packet_type) {
 507                         struct rte_net_hdr_lens hdr_lens;
 508
 509                         mbuf->packet_type = rte_net_get_ptype(mbuf, &hdr_lens,
 510                                         RTE_PTYPE_L2_MASK | RTE_PTYPE_L3_MASK
 511                                         | RTE_PTYPE_L4_MASK);
 512                         mbuf->l2_len = hdr_lens.l2_len;
 513                         mbuf->l3_len = hdr_lens.l3_len;
 514                 }
 515                 if (temp->data_off < DEFAULT_TX_ICEOF
 516                         + sizeof(struct dpaa_eth_parse_results_t))
 517                         temp->data_off = DEFAULT_TX_ICEOF
 518                                 + sizeof(struct dpaa_eth_parse_results_t);
 519                 dcbz_64(temp->buf_addr);
 520                 dpaa_checksum_offload(mbuf, fd, temp->buf_addr);
 521         }
 522
 523         sgt = temp->buf_addr + temp->data_off;
 524         fd->format = QM_FD_SG;
 525         fd->addr = temp->buf_iova;
 526         fd->offset = temp->data_off;
 527         fd->bpid = bpid;
 528         fd->length20 = mbuf->pkt_len;
 529
 530         while (i < DPAA_SGT_MAX_ENTRIES) {
 531                 sg_temp = &sgt[i++];
 532                 sg_temp->opaque = 0;
 533                 sg_temp->val = 0;
 534                 sg_temp->addr = cur_seg->buf_iova;
 535                 sg_temp->offset = cur_seg->data_off;
 536                 sg_temp->length = cur_seg->data_len;
 537                 if (RTE_MBUF_DIRECT(cur_seg)) {
 538                         if (rte_mbuf_refcnt_read(cur_seg) > 1) {
 539                                 /*If refcnt > 1, invalid bpid is set to ensure
 540                                  * buffer is not freed by HW.
 541                                  */
 542                                 sg_temp->bpid = 0xff;
 543                                 rte_mbuf_refcnt_update(cur_seg, -1);
 544                         } else {
 545                                 sg_temp->bpid =
 546                                         DPAA_MEMPOOL_TO_BPID(cur_seg->pool);
 547                         }
 548                         cur_seg = cur_seg->next;
 549                 } else {
 550                         /* Get owner MBUF from indirect buffer */
 551                         mi = rte_mbuf_from_indirect(cur_seg);
 552                         if (rte_mbuf_refcnt_read(mi) > 1) {
 553                                 /*If refcnt > 1, invalid bpid is set to ensure
 554                                  * owner buffer is not freed by HW.
 555                                  */
 556                                 sg_temp->bpid = 0xff;
 557                         } else {
 558                                 sg_temp->bpid = DPAA_MEMPOOL_TO_BPID(mi->pool);
 559                                 rte_mbuf_refcnt_update(mi, 1);
 560                         }
 561                         prev_seg = cur_seg;
 562                         cur_seg = cur_seg->next;
 563                         prev_seg->next = NULL;
 564                         rte_pktmbuf_free(prev_seg);
 565                 }
 566                 if (cur_seg == NULL) {
 567                         sg_temp->final = 1;
 568                         cpu_to_hw_sg(sg_temp);
 569                         break;
 570                 }
 571                 cpu_to_hw_sg(sg_temp);
 572         }
 573         return 0;
 574 }
 575
 576 /* Handle mbufs which are not segmented (non SG) */
 577 static inline void
 578 tx_on_dpaa_pool_unsegmented(struct rte_mbuf *mbuf,
 579                             struct dpaa_bp_info *bp_info,
 580                             struct qm_fd *fd_arr)
 581 {
 582         struct rte_mbuf *mi = NULL;
 583
 584         if (RTE_MBUF_DIRECT(mbuf)) {
 585                 if (rte_mbuf_refcnt_read(mbuf) > 1) {
 586                         /* In case of direct mbuf and mbuf being cloned,
 587                          * BMAN should _not_ release buffer.
 588                          */
 589                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 590                         /* Buffer should be releasd by EAL */
 591                         rte_mbuf_refcnt_update(mbuf, -1);
 592                 } else {
 593                         /* In case of direct mbuf and no cloning, mbuf can be
 594                          * released by BMAN.
 595                          */
 596                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 597                 }
 598         } else {
 599                 /* This is data-containing core mbuf: 'mi' */
 600                 mi = rte_mbuf_from_indirect(mbuf);
 601                 if (rte_mbuf_refcnt_read(mi) > 1) {
 602                         /* In case of indirect mbuf, and mbuf being cloned,
 603                          * BMAN should _not_ release it and let EAL release
 604                          * it through pktmbuf_free below.
 605                          */
 606                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 607                 } else {
 608                         /* In case of indirect mbuf, and no cloning, core mbuf
 609                          * should be released by BMAN.
 610                          * Increate refcnt of core mbuf so that when
 611                          * pktmbuf_free is called and mbuf is released, EAL
 612                          * doesn't try to release core mbuf which would have
 613                          * been released by BMAN.
 614                          */
 615                         rte_mbuf_refcnt_update(mi, 1);
 616                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 617                 }
 618                 rte_pktmbuf_free(mbuf);
 619         }
 620
 621         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK)
 622                 dpaa_unsegmented_checksum(mbuf, fd_arr);
 623 }
 624
 625 /* Handle all mbufs on dpaa BMAN managed pool */
 626 static inline uint16_t
 627 tx_on_dpaa_pool(struct rte_mbuf *mbuf,
 628                 struct dpaa_bp_info *bp_info,
 629                 struct qm_fd *fd_arr)
 630 {
 631         DPAA_DP_LOG(DEBUG, "BMAN offloaded buffer, mbuf: %p", mbuf);
 632
 633         if (mbuf->nb_segs == 1) {
 634                 /* Case for non-segmented buffers */
 635                 tx_on_dpaa_pool_unsegmented(mbuf, bp_info, fd_arr);
 636         } else if (mbuf->nb_segs > 1 &&
 637                    mbuf->nb_segs <= DPAA_SGT_MAX_ENTRIES) {
 638                 if (dpaa_eth_mbuf_to_sg_fd(mbuf, fd_arr, bp_info->bpid)) {
 639                         DPAA_PMD_DEBUG("Unable to create Scatter Gather FD");
 640                         return 1;
 641                 }
 642         } else {
 643                 DPAA_PMD_DEBUG("Number of Segments not supported");
 644                 return 1;
 645         }
 646
 647         return 0;
 648 }
 649
 650 /* Handle all mbufs on an external pool (non-dpaa) */
 651 static inline uint16_t
 652 tx_on_external_pool(struct qman_fq *txq, struct rte_mbuf *mbuf,
 653                     struct qm_fd *fd_arr)
 654 {
 655         struct dpaa_if *dpaa_intf = txq->dpaa_intf;
 656         struct rte_mbuf *dmable_mbuf;
 657
 658         DPAA_DP_LOG(DEBUG, "Non-BMAN offloaded buffer."
 659                     "Allocating an offloaded buffer");
 660         dmable_mbuf = dpaa_get_dmable_mbuf(mbuf, dpaa_intf);
 661         if (!dmable_mbuf) {
 662                 DPAA_DP_LOG(DEBUG, "no dpaa buffers.");
 663                 return 1;
 664         }
 665
 666         DPAA_MBUF_TO_CONTIG_FD(dmable_mbuf, fd_arr, dpaa_intf->bp_info->bpid);
 667
 668         return 0;
 669 }
 670
 671 uint16_t
 672 dpaa_eth_queue_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
 673 {
 674         struct rte_mbuf *mbuf, *mi = NULL;
 675         struct rte_mempool *mp;
 676         struct dpaa_bp_info *bp_info;
 677         struct qm_fd fd_arr[DPAA_TX_BURST_SIZE];
 678         uint32_t frames_to_send, loop, sent = 0;
 679         uint16_t state;
 680         int ret;
 681
 682         ret = rte_dpaa_portal_init((void *)0);
 683         if (ret) {
 684                 DPAA_PMD_ERR("Failure in affining portal");
 685                 return 0;
 686         }
 687
 688         DPAA_DP_LOG(DEBUG, "Transmitting %d buffers on queue: %p", nb_bufs, q);
 689
 690         while (nb_bufs) {
 691                 frames_to_send = (nb_bufs > DPAA_TX_BURST_SIZE) ?
 692                                 DPAA_TX_BURST_SIZE : nb_bufs;
 693                 for (loop = 0; loop < frames_to_send; loop++) {
 694                         mbuf = *(bufs++);
 695                         if (likely(RTE_MBUF_DIRECT(mbuf))) {
 696                                 mp = mbuf->pool;
 697                                 bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
 698                                 if (likely(mp->ops_index ==
 699                                                 bp_info->dpaa_ops_index &&
 700                                         mbuf->nb_segs == 1 &&
 701                                         rte_mbuf_refcnt_read(mbuf) == 1)) {
 702                                         DPAA_MBUF_TO_CONTIG_FD(mbuf,
 703                                                 &fd_arr[loop], bp_info->bpid);
 704                                         if (mbuf->ol_flags &
 705                                                 DPAA_TX_CKSUM_OFFLOAD_MASK)
 706                                                 dpaa_unsegmented_checksum(mbuf,
 707                                                         &fd_arr[loop]);
 708                                         continue;
 709                                 }
 710                         } else {
 711                                 mi = rte_mbuf_from_indirect(mbuf);
 712                                 mp = mi->pool;
 713                         }
 714
 715                         bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
 716                         if (likely(mp->ops_index == bp_info->dpaa_ops_index)) {
 717                                 state = tx_on_dpaa_pool(mbuf, bp_info,
 718                                                         &fd_arr[loop]);
 719                                 if (unlikely(state)) {
 720                                         /* Set frames_to_send & nb_bufs so
 721                                          * that packets are transmitted till
 722                                          * previous frame.
 723                                          */
 724                                         frames_to_send = loop;
 725                                         nb_bufs = loop;
 726                                         goto send_pkts;
 727                                 }
 728                         } else {
 729                                 state = tx_on_external_pool(q, mbuf,
 730                                                             &fd_arr[loop]);
 731                                 if (unlikely(state)) {
 732                                         /* Set frames_to_send & nb_bufs so
 733                                          * that packets are transmitted till
 734                                          * previous frame.
 735                                          */
 736                                         frames_to_send = loop;
 737                                         nb_bufs = loop;
 738                                         goto send_pkts;
 739                                 }
 740                         }
 741                 }
 742
 743 send_pkts:
 744                 loop = 0;
 745                 while (loop < frames_to_send) {
 746                         loop += qman_enqueue_multi(q, &fd_arr[loop],
 747                                         frames_to_send - loop);
 748                 }
 749                 nb_bufs -= frames_to_send;
 750                 sent += frames_to_send;
 751         }
 752
 753         DPAA_DP_LOG(DEBUG, "Transmitted %d buffers on queue: %p", sent, q);
 754
 755         return sent;
 756 }
 757
 758 uint16_t dpaa_eth_tx_drop_all(void *q  __rte_unused,
 759                               struct rte_mbuf **bufs __rte_unused,
 760                 uint16_t nb_bufs __rte_unused)
 761 {
 762         DPAA_DP_LOG(DEBUG, "Drop all packets");
 763
 764         /* Drop all incoming packets. No need to free packets here
 765          * because the rte_eth f/w frees up the packets through tx_buffer
 766          * callback in case this functions returns count less than nb_bufs
 767          */
 768         return 0;
 769 }