drivers/net/dpaa/dpaa_rxtx.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2016 Freescale Semiconductor, Inc. All rights reserved.
   5  *   Copyright 2017 NXP.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of  Freescale Semiconductor, Inc nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 /* System headers */
  35 #include <inttypes.h>
  36 #include <unistd.h>
  37 #include <stdio.h>
  38 #include <limits.h>
  39 #include <sched.h>
  40 #include <pthread.h>
  41
  42 #include <rte_byteorder.h>
  43 #include <rte_common.h>
  44 #include <rte_interrupts.h>
  45 #include <rte_log.h>
  46 #include <rte_debug.h>
  47 #include <rte_pci.h>
  48 #include <rte_atomic.h>
  49 #include <rte_branch_prediction.h>
  50 #include <rte_memory.h>
  51 #include <rte_tailq.h>
  52 #include <rte_eal.h>
  53 #include <rte_alarm.h>
  54 #include <rte_ether.h>
  55 #include <rte_ethdev.h>
  56 #include <rte_malloc.h>
  57 #include <rte_ring.h>
  58 #include <rte_ip.h>
  59 #include <rte_tcp.h>
  60 #include <rte_udp.h>
  61 #include <rte_net.h>
  62
  63 #include "dpaa_ethdev.h"
  64 #include "dpaa_rxtx.h"
  65 #include <rte_dpaa_bus.h>
  66 #include <dpaa_mempool.h>
  67
  68 #include <fsl_usd.h>
  69 #include <fsl_qman.h>
  70 #include <fsl_bman.h>
  71 #include <of.h>
  72 #include <netcfg.h>
  73
  74 #define DPAA_MBUF_TO_CONTIG_FD(_mbuf, _fd, _bpid) \
  75         do { \
  76                 (_fd)->cmd = 0; \
  77                 (_fd)->opaque_addr = 0; \
  78                 (_fd)->opaque = QM_FD_CONTIG << DPAA_FD_FORMAT_SHIFT; \
  79                 (_fd)->opaque |= ((_mbuf)->data_off) << DPAA_FD_OFFSET_SHIFT; \
  80                 (_fd)->opaque |= (_mbuf)->pkt_len; \
  81                 (_fd)->addr = (_mbuf)->buf_iova; \
  82                 (_fd)->bpid = _bpid; \
  83         } while (0)
  84
  85 #if (defined RTE_LIBRTE_DPAA_DEBUG_DRIVER)
  86 void dpaa_display_frame(const struct qm_fd *fd)
  87 {
  88         int ii;
  89         char *ptr;
  90
  91         printf("%s::bpid %x addr %08x%08x, format %d off %d, len %d stat %x\n",
  92                __func__, fd->bpid, fd->addr_hi, fd->addr_lo, fd->format,
  93                 fd->offset, fd->length20, fd->status);
  94
  95         ptr = (char *)rte_dpaa_mem_ptov(fd->addr);
  96         ptr += fd->offset;
  97         printf("%02x ", *ptr);
  98         for (ii = 1; ii < fd->length20; ii++) {
  99                 printf("%02x ", *ptr);
 100                 if ((ii % 16) == 0)
 101                         printf("\n");
 102                 ptr++;
 103         }
 104         printf("\n");
 105 }
 106 #else
 107 #define dpaa_display_frame(a)
 108 #endif
 109
 110 static inline void dpaa_slow_parsing(struct rte_mbuf *m __rte_unused,
 111                                      uint64_t prs __rte_unused)
 112 {
 113         DPAA_DP_LOG(DEBUG, "Slow parsing");
 114         /*TBD:XXX: to be implemented*/
 115 }
 116
 117 static inline void dpaa_eth_packet_info(struct rte_mbuf *m,
 118                                         uint64_t fd_virt_addr)
 119 {
 120         struct annotations_t *annot = GET_ANNOTATIONS(fd_virt_addr);
 121         uint64_t prs = *((uint64_t *)(&annot->parse)) & DPAA_PARSE_MASK;
 122
 123         DPAA_DP_LOG(DEBUG, " Parsing mbuf: %p with annotations: %p", m, annot);
 124
 125         switch (prs) {
 126         case DPAA_PKT_TYPE_NONE:
 127                 m->packet_type = 0;
 128                 break;
 129         case DPAA_PKT_TYPE_ETHER:
 130                 m->packet_type = RTE_PTYPE_L2_ETHER;
 131                 break;
 132         case DPAA_PKT_TYPE_IPV4:
 133                 m->packet_type = RTE_PTYPE_L2_ETHER |
 134                         RTE_PTYPE_L3_IPV4;
 135                 break;
 136         case DPAA_PKT_TYPE_IPV6:
 137                 m->packet_type = RTE_PTYPE_L2_ETHER |
 138                         RTE_PTYPE_L3_IPV6;
 139                 break;
 140         case DPAA_PKT_TYPE_IPV4_FRAG:
 141         case DPAA_PKT_TYPE_IPV4_FRAG_UDP:
 142         case DPAA_PKT_TYPE_IPV4_FRAG_TCP:
 143         case DPAA_PKT_TYPE_IPV4_FRAG_SCTP:
 144                 m->packet_type = RTE_PTYPE_L2_ETHER |
 145                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG;
 146                 break;
 147         case DPAA_PKT_TYPE_IPV6_FRAG:
 148         case DPAA_PKT_TYPE_IPV6_FRAG_UDP:
 149         case DPAA_PKT_TYPE_IPV6_FRAG_TCP:
 150         case DPAA_PKT_TYPE_IPV6_FRAG_SCTP:
 151                 m->packet_type = RTE_PTYPE_L2_ETHER |
 152                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG;
 153                 break;
 154         case DPAA_PKT_TYPE_IPV4_EXT:
 155                 m->packet_type = RTE_PTYPE_L2_ETHER |
 156                         RTE_PTYPE_L3_IPV4_EXT;
 157                 break;
 158         case DPAA_PKT_TYPE_IPV6_EXT:
 159                 m->packet_type = RTE_PTYPE_L2_ETHER |
 160                         RTE_PTYPE_L3_IPV6_EXT;
 161                 break;
 162         case DPAA_PKT_TYPE_IPV4_TCP:
 163                 m->packet_type = RTE_PTYPE_L2_ETHER |
 164                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP;
 165                 break;
 166         case DPAA_PKT_TYPE_IPV6_TCP:
 167                 m->packet_type = RTE_PTYPE_L2_ETHER |
 168                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
 169                 break;
 170         case DPAA_PKT_TYPE_IPV4_UDP:
 171                 m->packet_type = RTE_PTYPE_L2_ETHER |
 172                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP;
 173                 break;
 174         case DPAA_PKT_TYPE_IPV6_UDP:
 175                 m->packet_type = RTE_PTYPE_L2_ETHER |
 176                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
 177                 break;
 178         case DPAA_PKT_TYPE_IPV4_EXT_UDP:
 179                 m->packet_type = RTE_PTYPE_L2_ETHER |
 180                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP;
 181                 break;
 182         case DPAA_PKT_TYPE_IPV6_EXT_UDP:
 183                 m->packet_type = RTE_PTYPE_L2_ETHER |
 184                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP;
 185                 break;
 186         case DPAA_PKT_TYPE_IPV4_EXT_TCP:
 187                 m->packet_type = RTE_PTYPE_L2_ETHER |
 188                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP;
 189                 break;
 190         case DPAA_PKT_TYPE_IPV6_EXT_TCP:
 191                 m->packet_type = RTE_PTYPE_L2_ETHER |
 192                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP;
 193                 break;
 194         case DPAA_PKT_TYPE_IPV4_SCTP:
 195                 m->packet_type = RTE_PTYPE_L2_ETHER |
 196                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP;
 197                 break;
 198         case DPAA_PKT_TYPE_IPV6_SCTP:
 199                 m->packet_type = RTE_PTYPE_L2_ETHER |
 200                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_SCTP;
 201                 break;
 202         /* More switch cases can be added */
 203         default:
 204                 dpaa_slow_parsing(m, prs);
 205         }
 206
 207         m->tx_offload = annot->parse.ip_off[0];
 208         m->tx_offload |= (annot->parse.l4_off - annot->parse.ip_off[0])
 209                                         << DPAA_PKT_L3_LEN_SHIFT;
 210
 211         /* Set the hash values */
 212         m->hash.rss = (uint32_t)(rte_be_to_cpu_64(annot->hash));
 213         m->ol_flags = PKT_RX_RSS_HASH;
 214         /* All packets with Bad checksum are dropped by interface (and
 215          * corresponding notification issued to RX error queues).
 216          */
 217         m->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
 218
 219         /* Check if Vlan is present */
 220         if (prs & DPAA_PARSE_VLAN_MASK)
 221                 m->ol_flags |= PKT_RX_VLAN;
 222         /* Packet received without stripping the vlan */
 223 }
 224
 225 static inline void dpaa_checksum(struct rte_mbuf *mbuf)
 226 {
 227         struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf, struct ether_hdr *);
 228         char *l3_hdr = (char *)eth_hdr + mbuf->l2_len;
 229         struct ipv4_hdr *ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 230         struct ipv6_hdr *ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 231
 232         DPAA_DP_LOG(DEBUG, "Calculating checksum for mbuf: %p", mbuf);
 233
 234         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 235             ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 236             RTE_PTYPE_L3_IPV4_EXT)) {
 237                 ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 238                 ipv4_hdr->hdr_checksum = 0;
 239                 ipv4_hdr->hdr_checksum = rte_ipv4_cksum(ipv4_hdr);
 240         } else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 241                    RTE_PTYPE_L3_IPV6) ||
 242                    ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 243                    RTE_PTYPE_L3_IPV6_EXT))
 244                 ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 245
 246         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP) {
 247                 struct tcp_hdr *tcp_hdr = (struct tcp_hdr *)(l3_hdr +
 248                                           mbuf->l3_len);
 249                 tcp_hdr->cksum = 0;
 250                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 251                         tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 252                                                                tcp_hdr);
 253                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 254                         tcp_hdr->cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 255                                                                tcp_hdr);
 256         } else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) ==
 257                    RTE_PTYPE_L4_UDP) {
 258                 struct udp_hdr *udp_hdr = (struct udp_hdr *)(l3_hdr +
 259                                                              mbuf->l3_len);
 260                 udp_hdr->dgram_cksum = 0;
 261                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 262                         udp_hdr->dgram_cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 263                                                                      udp_hdr);
 264                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 265                         udp_hdr->dgram_cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 266                                                                      udp_hdr);
 267         }
 268 }
 269
 270 static inline void dpaa_checksum_offload(struct rte_mbuf *mbuf,
 271                                          struct qm_fd *fd, char *prs_buf)
 272 {
 273         struct dpaa_eth_parse_results_t *prs;
 274
 275         DPAA_DP_LOG(DEBUG, " Offloading checksum for mbuf: %p", mbuf);
 276
 277         prs = GET_TX_PRS(prs_buf);
 278         prs->l3r = 0;
 279         prs->l4r = 0;
 280         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 281            ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 282            RTE_PTYPE_L3_IPV4_EXT))
 283                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV4;
 284         else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 285                    RTE_PTYPE_L3_IPV6) ||
 286                  ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 287                 RTE_PTYPE_L3_IPV6_EXT))
 288                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV6;
 289
 290         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP)
 291                 prs->l4r = DPAA_L4_PARSE_RESULT_TCP;
 292         else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_UDP)
 293                 prs->l4r = DPAA_L4_PARSE_RESULT_UDP;
 294
 295         prs->ip_off[0] = mbuf->l2_len;
 296         prs->l4_off = mbuf->l3_len + mbuf->l2_len;
 297         /* Enable L3 (and L4, if TCP or UDP) HW checksum*/
 298         fd->cmd = DPAA_FD_CMD_RPD | DPAA_FD_CMD_DTC;
 299 }
 300
 301 struct rte_mbuf *
 302 dpaa_eth_sg_to_mbuf(struct qm_fd *fd, uint32_t ifid)
 303 {
 304         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 305         struct rte_mbuf *first_seg, *prev_seg, *cur_seg, *temp;
 306         struct qm_sg_entry *sgt, *sg_temp;
 307         void *vaddr, *sg_vaddr;
 308         int i = 0;
 309         uint8_t fd_offset = fd->offset;
 310
 311         DPAA_DP_LOG(DEBUG, "Received an SG frame");
 312
 313         vaddr = rte_dpaa_mem_ptov(qm_fd_addr(fd));
 314         if (!vaddr) {
 315                 DPAA_PMD_ERR("unable to convert physical address");
 316                 return NULL;
 317         }
 318         sgt = vaddr + fd_offset;
 319         sg_temp = &sgt[i++];
 320         hw_sg_to_cpu(sg_temp);
 321         temp = (struct rte_mbuf *)((char *)vaddr - bp_info->meta_data_size);
 322         sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 323
 324         first_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 325                                                 bp_info->meta_data_size);
 326         first_seg->data_off = sg_temp->offset;
 327         first_seg->data_len = sg_temp->length;
 328         first_seg->pkt_len = sg_temp->length;
 329         rte_mbuf_refcnt_set(first_seg, 1);
 330
 331         first_seg->port = ifid;
 332         first_seg->nb_segs = 1;
 333         first_seg->ol_flags = 0;
 334         prev_seg = first_seg;
 335         while (i < DPAA_SGT_MAX_ENTRIES) {
 336                 sg_temp = &sgt[i++];
 337                 hw_sg_to_cpu(sg_temp);
 338                 sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 339                 cur_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 340                                                       bp_info->meta_data_size);
 341                 cur_seg->data_off = sg_temp->offset;
 342                 cur_seg->data_len = sg_temp->length;
 343                 first_seg->pkt_len += sg_temp->length;
 344                 first_seg->nb_segs += 1;
 345                 rte_mbuf_refcnt_set(cur_seg, 1);
 346                 prev_seg->next = cur_seg;
 347                 if (sg_temp->final) {
 348                         cur_seg->next = NULL;
 349                         break;
 350                 }
 351                 prev_seg = cur_seg;
 352         }
 353
 354         dpaa_eth_packet_info(first_seg, (uint64_t)vaddr);
 355         rte_pktmbuf_free_seg(temp);
 356
 357         return first_seg;
 358 }
 359
 360 static inline struct rte_mbuf *dpaa_eth_fd_to_mbuf(struct qm_fd *fd,
 361                                                         uint32_t ifid)
 362 {
 363         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 364         struct rte_mbuf *mbuf;
 365         void *ptr;
 366         uint8_t format =
 367                 (fd->opaque & DPAA_FD_FORMAT_MASK) >> DPAA_FD_FORMAT_SHIFT;
 368         uint16_t offset =
 369                 (fd->opaque & DPAA_FD_OFFSET_MASK) >> DPAA_FD_OFFSET_SHIFT;
 370         uint32_t length = fd->opaque & DPAA_FD_LENGTH_MASK;
 371
 372         DPAA_DP_LOG(DEBUG, " FD--->MBUF");
 373
 374         if (unlikely(format == qm_fd_sg))
 375                 return dpaa_eth_sg_to_mbuf(fd, ifid);
 376
 377         /* Ignoring case when format != qm_fd_contig */
 378         dpaa_display_frame(fd);
 379         ptr = rte_dpaa_mem_ptov(fd->addr);
 380         /* Ignoring case when ptr would be NULL. That is only possible incase
 381          * of a corrupted packet
 382          */
 383
 384         mbuf = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size);
 385         /* Prefetch the Parse results and packet data to L1 */
 386         rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF));
 387         rte_prefetch0((void *)((uint8_t *)ptr + offset));
 388
 389         mbuf->data_off = offset;
 390         mbuf->data_len = length;
 391         mbuf->pkt_len = length;
 392
 393         mbuf->port = ifid;
 394         mbuf->nb_segs = 1;
 395         mbuf->ol_flags = 0;
 396         mbuf->next = NULL;
 397         rte_mbuf_refcnt_set(mbuf, 1);
 398         dpaa_eth_packet_info(mbuf, (uint64_t)mbuf->buf_addr);
 399
 400         return mbuf;
 401 }
 402
 403 uint16_t dpaa_eth_queue_rx(void *q,
 404                            struct rte_mbuf **bufs,
 405                            uint16_t nb_bufs)
 406 {
 407         struct qman_fq *fq = q;
 408         struct qm_dqrr_entry *dq;
 409         uint32_t num_rx = 0, ifid = ((struct dpaa_if *)fq->dpaa_intf)->ifid;
 410         int ret;
 411
 412         ret = rte_dpaa_portal_init((void *)0);
 413         if (ret) {
 414                 DPAA_PMD_ERR("Failure in affining portal");
 415                 return 0;
 416         }
 417
 418         ret = qman_set_vdq(fq, (nb_bufs > DPAA_MAX_DEQUEUE_NUM_FRAMES) ?
 419                                 DPAA_MAX_DEQUEUE_NUM_FRAMES : nb_bufs);
 420         if (ret)
 421                 return 0;
 422
 423         do {
 424                 dq = qman_dequeue(fq);
 425                 if (!dq)
 426                         continue;
 427                 bufs[num_rx++] = dpaa_eth_fd_to_mbuf(&dq->fd, ifid);
 428                 qman_dqrr_consume(fq, dq);
 429         } while (fq->flags & QMAN_FQ_STATE_VDQCR);
 430
 431         return num_rx;
 432 }
 433
 434 static void *dpaa_get_pktbuf(struct dpaa_bp_info *bp_info)
 435 {
 436         int ret;
 437         uint64_t buf = 0;
 438         struct bm_buffer bufs;
 439
 440         ret = bman_acquire(bp_info->bp, &bufs, 1, 0);
 441         if (ret <= 0) {
 442                 DPAA_PMD_WARN("Failed to allocate buffers %d", ret);
 443                 return (void *)buf;
 444         }
 445
 446         DPAA_DP_LOG(DEBUG, "got buffer 0x%lx from pool %d",
 447                     (uint64_t)bufs.addr, bufs.bpid);
 448
 449         buf = (uint64_t)rte_dpaa_mem_ptov(bufs.addr) - bp_info->meta_data_size;
 450         if (!buf)
 451                 goto out;
 452
 453 out:
 454         return (void *)buf;
 455 }
 456
 457 static struct rte_mbuf *dpaa_get_dmable_mbuf(struct rte_mbuf *mbuf,
 458                                              struct dpaa_if *dpaa_intf)
 459 {
 460         struct rte_mbuf *dpaa_mbuf;
 461
 462         /* allocate pktbuffer on bpid for dpaa port */
 463         dpaa_mbuf = dpaa_get_pktbuf(dpaa_intf->bp_info);
 464         if (!dpaa_mbuf)
 465                 return NULL;
 466
 467         memcpy((uint8_t *)(dpaa_mbuf->buf_addr) + mbuf->data_off, (void *)
 468                 ((uint8_t *)(mbuf->buf_addr) + mbuf->data_off), mbuf->pkt_len);
 469
 470         /* Copy only the required fields */
 471         dpaa_mbuf->data_off = mbuf->data_off;
 472         dpaa_mbuf->pkt_len = mbuf->pkt_len;
 473         dpaa_mbuf->ol_flags = mbuf->ol_flags;
 474         dpaa_mbuf->packet_type = mbuf->packet_type;
 475         dpaa_mbuf->tx_offload = mbuf->tx_offload;
 476         rte_pktmbuf_free(mbuf);
 477         return dpaa_mbuf;
 478 }
 479
 480 int
 481 dpaa_eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf,
 482                 struct qm_fd *fd,
 483                 uint32_t bpid)
 484 {
 485         struct rte_mbuf *cur_seg = mbuf, *prev_seg = NULL;
 486         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(bpid);
 487         struct rte_mbuf *temp, *mi;
 488         struct qm_sg_entry *sg_temp, *sgt;
 489         int i = 0;
 490
 491         DPAA_DP_LOG(DEBUG, "Creating SG FD to transmit");
 492
 493         temp = rte_pktmbuf_alloc(bp_info->mp);
 494         if (!temp) {
 495                 DPAA_PMD_ERR("Failure in allocation of mbuf");
 496                 return -1;
 497         }
 498         if (temp->buf_len < ((mbuf->nb_segs * sizeof(struct qm_sg_entry))
 499                                 + temp->data_off)) {
 500                 DPAA_PMD_ERR("Insufficient space in mbuf for SG entries");
 501                 return -1;
 502         }
 503
 504         fd->cmd = 0;
 505         fd->opaque_addr = 0;
 506
 507         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 508                 if (!mbuf->packet_type) {
 509                         struct rte_net_hdr_lens hdr_lens;
 510
 511                         mbuf->packet_type = rte_net_get_ptype(mbuf, &hdr_lens,
 512                                         RTE_PTYPE_L2_MASK | RTE_PTYPE_L3_MASK
 513                                         | RTE_PTYPE_L4_MASK);
 514                         mbuf->l2_len = hdr_lens.l2_len;
 515                         mbuf->l3_len = hdr_lens.l3_len;
 516                 }
 517                 if (temp->data_off < DEFAULT_TX_ICEOF
 518                         + sizeof(struct dpaa_eth_parse_results_t))
 519                         temp->data_off = DEFAULT_TX_ICEOF
 520                                 + sizeof(struct dpaa_eth_parse_results_t);
 521                 dcbz_64(temp->buf_addr);
 522                 dpaa_checksum_offload(mbuf, fd, temp->buf_addr);
 523         }
 524
 525         sgt = temp->buf_addr + temp->data_off;
 526         fd->format = QM_FD_SG;
 527         fd->addr = temp->buf_iova;
 528         fd->offset = temp->data_off;
 529         fd->bpid = bpid;
 530         fd->length20 = mbuf->pkt_len;
 531
 532         while (i < DPAA_SGT_MAX_ENTRIES) {
 533                 sg_temp = &sgt[i++];
 534                 sg_temp->opaque = 0;
 535                 sg_temp->val = 0;
 536                 sg_temp->addr = cur_seg->buf_iova;
 537                 sg_temp->offset = cur_seg->data_off;
 538                 sg_temp->length = cur_seg->data_len;
 539                 if (RTE_MBUF_DIRECT(cur_seg)) {
 540                         if (rte_mbuf_refcnt_read(cur_seg) > 1) {
 541                                 /*If refcnt > 1, invalid bpid is set to ensure
 542                                  * buffer is not freed by HW.
 543                                  */
 544                                 sg_temp->bpid = 0xff;
 545                                 rte_mbuf_refcnt_update(cur_seg, -1);
 546                         } else {
 547                                 sg_temp->bpid =
 548                                         DPAA_MEMPOOL_TO_BPID(cur_seg->pool);
 549                         }
 550                         cur_seg = cur_seg->next;
 551                 } else {
 552                         /* Get owner MBUF from indirect buffer */
 553                         mi = rte_mbuf_from_indirect(cur_seg);
 554                         if (rte_mbuf_refcnt_read(mi) > 1) {
 555                                 /*If refcnt > 1, invalid bpid is set to ensure
 556                                  * owner buffer is not freed by HW.
 557                                  */
 558                                 sg_temp->bpid = 0xff;
 559                         } else {
 560                                 sg_temp->bpid = DPAA_MEMPOOL_TO_BPID(mi->pool);
 561                                 rte_mbuf_refcnt_update(mi, 1);
 562                         }
 563                         prev_seg = cur_seg;
 564                         cur_seg = cur_seg->next;
 565                         prev_seg->next = NULL;
 566                         rte_pktmbuf_free(prev_seg);
 567                 }
 568                 if (cur_seg == NULL) {
 569                         sg_temp->final = 1;
 570                         cpu_to_hw_sg(sg_temp);
 571                         break;
 572                 }
 573                 cpu_to_hw_sg(sg_temp);
 574         }
 575         return 0;
 576 }
 577
 578 /* Handle mbufs which are not segmented (non SG) */
 579 static inline void
 580 tx_on_dpaa_pool_unsegmented(struct rte_mbuf *mbuf,
 581                             struct dpaa_bp_info *bp_info,
 582                             struct qm_fd *fd_arr)
 583 {
 584         struct rte_mbuf *mi = NULL;
 585
 586         if (RTE_MBUF_DIRECT(mbuf)) {
 587                 if (rte_mbuf_refcnt_read(mbuf) > 1) {
 588                         /* In case of direct mbuf and mbuf being cloned,
 589                          * BMAN should _not_ release buffer.
 590                          */
 591                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 592                         /* Buffer should be releasd by EAL */
 593                         rte_mbuf_refcnt_update(mbuf, -1);
 594                 } else {
 595                         /* In case of direct mbuf and no cloning, mbuf can be
 596                          * released by BMAN.
 597                          */
 598                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 599                 }
 600         } else {
 601                 /* This is data-containing core mbuf: 'mi' */
 602                 mi = rte_mbuf_from_indirect(mbuf);
 603                 if (rte_mbuf_refcnt_read(mi) > 1) {
 604                         /* In case of indirect mbuf, and mbuf being cloned,
 605                          * BMAN should _not_ release it and let EAL release
 606                          * it through pktmbuf_free below.
 607                          */
 608                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 609                 } else {
 610                         /* In case of indirect mbuf, and no cloning, core mbuf
 611                          * should be released by BMAN.
 612                          * Increate refcnt of core mbuf so that when
 613                          * pktmbuf_free is called and mbuf is released, EAL
 614                          * doesn't try to release core mbuf which would have
 615                          * been released by BMAN.
 616                          */
 617                         rte_mbuf_refcnt_update(mi, 1);
 618                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 619                 }
 620                 rte_pktmbuf_free(mbuf);
 621         }
 622
 623         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 624                 if (!mbuf->packet_type) {
 625                         struct rte_net_hdr_lens hdr_lens;
 626
 627                         mbuf->packet_type = rte_net_get_ptype(mbuf, &hdr_lens,
 628                                         RTE_PTYPE_L2_MASK | RTE_PTYPE_L3_MASK
 629                                         | RTE_PTYPE_L4_MASK);
 630                         mbuf->l2_len = hdr_lens.l2_len;
 631                         mbuf->l3_len = hdr_lens.l3_len;
 632                 }
 633                 if (mbuf->data_off < (DEFAULT_TX_ICEOF +
 634                     sizeof(struct dpaa_eth_parse_results_t))) {
 635                         DPAA_DP_LOG(DEBUG, "Checksum offload Err: "
 636                                 "Not enough Headroom "
 637                                 "space for correct Checksum offload."
 638                                 "So Calculating checksum in Software.");
 639                         dpaa_checksum(mbuf);
 640                 } else {
 641                         dpaa_checksum_offload(mbuf, fd_arr, mbuf->buf_addr);
 642                 }
 643         }
 644 }
 645
 646 /* Handle all mbufs on dpaa BMAN managed pool */
 647 static inline uint16_t
 648 tx_on_dpaa_pool(struct rte_mbuf *mbuf,
 649                 struct dpaa_bp_info *bp_info,
 650                 struct qm_fd *fd_arr)
 651 {
 652         DPAA_DP_LOG(DEBUG, "BMAN offloaded buffer, mbuf: %p", mbuf);
 653
 654         if (mbuf->nb_segs == 1) {
 655                 /* Case for non-segmented buffers */
 656                 tx_on_dpaa_pool_unsegmented(mbuf, bp_info, fd_arr);
 657         } else if (mbuf->nb_segs > 1 &&
 658                    mbuf->nb_segs <= DPAA_SGT_MAX_ENTRIES) {
 659                 if (dpaa_eth_mbuf_to_sg_fd(mbuf, fd_arr, bp_info->bpid)) {
 660                         DPAA_PMD_DEBUG("Unable to create Scatter Gather FD");
 661                         return 1;
 662                 }
 663         } else {
 664                 DPAA_PMD_DEBUG("Number of Segments not supported");
 665                 return 1;
 666         }
 667
 668         return 0;
 669 }
 670
 671 /* Handle all mbufs on an external pool (non-dpaa) */
 672 static inline uint16_t
 673 tx_on_external_pool(struct qman_fq *txq, struct rte_mbuf *mbuf,
 674                     struct qm_fd *fd_arr)
 675 {
 676         struct dpaa_if *dpaa_intf = txq->dpaa_intf;
 677         struct rte_mbuf *dmable_mbuf;
 678
 679         DPAA_DP_LOG(DEBUG, "Non-BMAN offloaded buffer."
 680                     "Allocating an offloaded buffer");
 681         dmable_mbuf = dpaa_get_dmable_mbuf(mbuf, dpaa_intf);
 682         if (!dmable_mbuf) {
 683                 DPAA_DP_LOG(DEBUG, "no dpaa buffers.");
 684                 return 1;
 685         }
 686
 687         DPAA_MBUF_TO_CONTIG_FD(dmable_mbuf, fd_arr, dpaa_intf->bp_info->bpid);
 688
 689         return 0;
 690 }
 691
 692 uint16_t
 693 dpaa_eth_queue_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
 694 {
 695         struct rte_mbuf *mbuf, *mi = NULL;
 696         struct rte_mempool *mp;
 697         struct dpaa_bp_info *bp_info;
 698         struct qm_fd fd_arr[MAX_TX_RING_SLOTS];
 699         uint32_t frames_to_send, loop, i = 0;
 700         uint16_t state;
 701         int ret;
 702
 703         ret = rte_dpaa_portal_init((void *)0);
 704         if (ret) {
 705                 DPAA_PMD_ERR("Failure in affining portal");
 706                 return 0;
 707         }
 708
 709         DPAA_DP_LOG(DEBUG, "Transmitting %d buffers on queue: %p", nb_bufs, q);
 710
 711         while (nb_bufs) {
 712                 frames_to_send = (nb_bufs >> 3) ? MAX_TX_RING_SLOTS : nb_bufs;
 713                 for (loop = 0; loop < frames_to_send; loop++, i++) {
 714                         mbuf = bufs[i];
 715                         if (RTE_MBUF_DIRECT(mbuf)) {
 716                                 mp = mbuf->pool;
 717                         } else {
 718                                 mi = rte_mbuf_from_indirect(mbuf);
 719                                 mp = mi->pool;
 720                         }
 721
 722                         bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
 723                         if (likely(mp->ops_index == bp_info->dpaa_ops_index)) {
 724                                 state = tx_on_dpaa_pool(mbuf, bp_info,
 725                                                         &fd_arr[loop]);
 726                                 if (unlikely(state)) {
 727                                         /* Set frames_to_send & nb_bufs so
 728                                          * that packets are transmitted till
 729                                          * previous frame.
 730                                          */
 731                                         frames_to_send = loop;
 732                                         nb_bufs = loop;
 733                                         goto send_pkts;
 734                                 }
 735                         } else {
 736                                 state = tx_on_external_pool(q, mbuf,
 737                                                             &fd_arr[loop]);
 738                                 if (unlikely(state)) {
 739                                         /* Set frames_to_send & nb_bufs so
 740                                          * that packets are transmitted till
 741                                          * previous frame.
 742                                          */
 743                                         frames_to_send = loop;
 744                                         nb_bufs = loop;
 745                                         goto send_pkts;
 746                                 }
 747                         }
 748                 }
 749
 750 send_pkts:
 751                 loop = 0;
 752                 while (loop < frames_to_send) {
 753                         loop += qman_enqueue_multi(q, &fd_arr[loop],
 754                                         frames_to_send - loop);
 755                 }
 756                 nb_bufs -= frames_to_send;
 757         }
 758
 759         DPAA_DP_LOG(DEBUG, "Transmitted %d buffers on queue: %p", i, q);
 760
 761         return i;
 762 }
 763
 764 uint16_t dpaa_eth_tx_drop_all(void *q  __rte_unused,
 765                               struct rte_mbuf **bufs __rte_unused,
 766                 uint16_t nb_bufs __rte_unused)
 767 {
 768         DPAA_DP_LOG(DEBUG, "Drop all packets");
 769
 770         /* Drop all incoming packets. No need to free packets here
 771          * because the rte_eth f/w frees up the packets through tx_buffer
 772          * callback in case this functions returns count less than nb_bufs
 773          */
 774         return 0;
 775 }