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