drivers/net/cnxk/cn9k_tx.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2021 Marvell.
   3  */
   4 #ifndef __CN9K_TX_H__
   5 #define __CN9K_TX_H__
   6
   7 #include <rte_vect.h>
   8
   9 #define NIX_TX_OFFLOAD_NONE           (0)
  10 #define NIX_TX_OFFLOAD_L3_L4_CSUM_F   BIT(0)
  11 #define NIX_TX_OFFLOAD_OL3_OL4_CSUM_F BIT(1)
  12 #define NIX_TX_OFFLOAD_VLAN_QINQ_F    BIT(2)
  13 #define NIX_TX_OFFLOAD_MBUF_NOFF_F    BIT(3)
  14 #define NIX_TX_OFFLOAD_TSO_F          BIT(4)
  15 #define NIX_TX_OFFLOAD_TSTAMP_F       BIT(5)
  16
  17 /* Flags to control xmit_prepare function.
  18  * Defining it from backwards to denote its been
  19  * not used as offload flags to pick function
  20  */
  21 #define NIX_TX_MULTI_SEG_F BIT(15)
  22
  23 #define NIX_TX_NEED_SEND_HDR_W1                                                \
  24         (NIX_TX_OFFLOAD_L3_L4_CSUM_F | NIX_TX_OFFLOAD_OL3_OL4_CSUM_F |         \
  25          NIX_TX_OFFLOAD_VLAN_QINQ_F | NIX_TX_OFFLOAD_TSO_F)
  26
  27 #define NIX_TX_NEED_EXT_HDR                                                    \
  28         (NIX_TX_OFFLOAD_VLAN_QINQ_F | NIX_TX_OFFLOAD_TSTAMP_F |                \
  29          NIX_TX_OFFLOAD_TSO_F)
  30
  31 #define NIX_XMIT_FC_OR_RETURN(txq, pkts)                                       \
  32         do {                                                                   \
  33                 /* Cached value is low, Update the fc_cache_pkts */            \
  34                 if (unlikely((txq)->fc_cache_pkts < (pkts))) {                 \
  35                         /* Multiply with sqe_per_sqb to express in pkts */     \
  36                         (txq)->fc_cache_pkts =                                 \
  37                                 ((txq)->nb_sqb_bufs_adj - *(txq)->fc_mem)      \
  38                                 << (txq)->sqes_per_sqb_log2;                   \
  39                         /* Check it again for the room */                      \
  40                         if (unlikely((txq)->fc_cache_pkts < (pkts)))           \
  41                                 return 0;                                      \
  42                 }                                                              \
  43         } while (0)
  44
  45 /* Function to determine no of tx subdesc required in case ext
  46  * sub desc is enabled.
  47  */
  48 static __rte_always_inline int
  49 cn9k_nix_tx_ext_subs(const uint16_t flags)
  50 {
  51         return (flags & NIX_TX_OFFLOAD_TSTAMP_F)
  52                        ? 2
  53                        : ((flags &
  54                            (NIX_TX_OFFLOAD_VLAN_QINQ_F | NIX_TX_OFFLOAD_TSO_F))
  55                                   ? 1
  56                                   : 0);
  57 }
  58
  59 static __rte_always_inline void
  60 cn9k_nix_xmit_prepare_tso(struct rte_mbuf *m, const uint64_t flags)
  61 {
  62         uint64_t mask, ol_flags = m->ol_flags;
  63
  64         if (flags & NIX_TX_OFFLOAD_TSO_F && (ol_flags & PKT_TX_TCP_SEG)) {
  65                 uintptr_t mdata = rte_pktmbuf_mtod(m, uintptr_t);
  66                 uint16_t *iplen, *oiplen, *oudplen;
  67                 uint16_t lso_sb, paylen;
  68
  69                 mask = -!!(ol_flags & (PKT_TX_OUTER_IPV4 | PKT_TX_OUTER_IPV6));
  70                 lso_sb = (mask & (m->outer_l2_len + m->outer_l3_len)) +
  71                          m->l2_len + m->l3_len + m->l4_len;
  72
  73                 /* Reduce payload len from base headers */
  74                 paylen = m->pkt_len - lso_sb;
  75
  76                 /* Get iplen position assuming no tunnel hdr */
  77                 iplen = (uint16_t *)(mdata + m->l2_len +
  78                                      (2 << !!(ol_flags & PKT_TX_IPV6)));
  79                 /* Handle tunnel tso */
  80                 if ((flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F) &&
  81                     (ol_flags & PKT_TX_TUNNEL_MASK)) {
  82                         const uint8_t is_udp_tun =
  83                                 (CNXK_NIX_UDP_TUN_BITMASK >>
  84                                  ((ol_flags & PKT_TX_TUNNEL_MASK) >> 45)) &
  85                                 0x1;
  86
  87                         oiplen = (uint16_t *)(mdata + m->outer_l2_len +
  88                                               (2 << !!(ol_flags &
  89                                                        PKT_TX_OUTER_IPV6)));
  90                         *oiplen = rte_cpu_to_be_16(rte_be_to_cpu_16(*oiplen) -
  91                                                    paylen);
  92
  93                         /* Update format for UDP tunneled packet */
  94                         if (is_udp_tun) {
  95                                 oudplen = (uint16_t *)(mdata + m->outer_l2_len +
  96                                                        m->outer_l3_len + 4);
  97                                 *oudplen = rte_cpu_to_be_16(
  98                                         rte_be_to_cpu_16(*oudplen) - paylen);
  99                         }
 100
 101                         /* Update iplen position to inner ip hdr */
 102                         iplen = (uint16_t *)(mdata + lso_sb - m->l3_len -
 103                                              m->l4_len +
 104                                              (2 << !!(ol_flags & PKT_TX_IPV6)));
 105                 }
 106
 107                 *iplen = rte_cpu_to_be_16(rte_be_to_cpu_16(*iplen) - paylen);
 108         }
 109 }
 110
 111 static __rte_always_inline void
 112 cn9k_nix_xmit_prepare(struct rte_mbuf *m, uint64_t *cmd, const uint16_t flags,
 113                       const uint64_t lso_tun_fmt)
 114 {
 115         struct nix_send_ext_s *send_hdr_ext;
 116         struct nix_send_hdr_s *send_hdr;
 117         uint64_t ol_flags = 0, mask;
 118         union nix_send_hdr_w1_u w1;
 119         union nix_send_sg_s *sg;
 120
 121         send_hdr = (struct nix_send_hdr_s *)cmd;
 122         if (flags & NIX_TX_NEED_EXT_HDR) {
 123                 send_hdr_ext = (struct nix_send_ext_s *)(cmd + 2);
 124                 sg = (union nix_send_sg_s *)(cmd + 4);
 125                 /* Clear previous markings */
 126                 send_hdr_ext->w0.lso = 0;
 127                 send_hdr_ext->w1.u = 0;
 128         } else {
 129                 sg = (union nix_send_sg_s *)(cmd + 2);
 130         }
 131
 132         if (flags & NIX_TX_NEED_SEND_HDR_W1) {
 133                 ol_flags = m->ol_flags;
 134                 w1.u = 0;
 135         }
 136
 137         if (!(flags & NIX_TX_MULTI_SEG_F)) {
 138                 send_hdr->w0.total = m->data_len;
 139                 send_hdr->w0.aura =
 140                         roc_npa_aura_handle_to_aura(m->pool->pool_id);
 141         }
 142
 143         /*
 144          * L3type:  2 => IPV4
 145          *          3 => IPV4 with csum
 146          *          4 => IPV6
 147          * L3type and L3ptr needs to be set for either
 148          * L3 csum or L4 csum or LSO
 149          *
 150          */
 151
 152         if ((flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F) &&
 153             (flags & NIX_TX_OFFLOAD_L3_L4_CSUM_F)) {
 154                 const uint8_t csum = !!(ol_flags & PKT_TX_OUTER_UDP_CKSUM);
 155                 const uint8_t ol3type =
 156                         ((!!(ol_flags & PKT_TX_OUTER_IPV4)) << 1) +
 157                         ((!!(ol_flags & PKT_TX_OUTER_IPV6)) << 2) +
 158                         !!(ol_flags & PKT_TX_OUTER_IP_CKSUM);
 159
 160                 /* Outer L3 */
 161                 w1.ol3type = ol3type;
 162                 mask = 0xffffull << ((!!ol3type) << 4);
 163                 w1.ol3ptr = ~mask & m->outer_l2_len;
 164                 w1.ol4ptr = ~mask & (w1.ol3ptr + m->outer_l3_len);
 165
 166                 /* Outer L4 */
 167                 w1.ol4type = csum + (csum << 1);
 168
 169                 /* Inner L3 */
 170                 w1.il3type = ((!!(ol_flags & PKT_TX_IPV4)) << 1) +
 171                              ((!!(ol_flags & PKT_TX_IPV6)) << 2);
 172                 w1.il3ptr = w1.ol4ptr + m->l2_len;
 173                 w1.il4ptr = w1.il3ptr + m->l3_len;
 174                 /* Increment it by 1 if it is IPV4 as 3 is with csum */
 175                 w1.il3type = w1.il3type + !!(ol_flags & PKT_TX_IP_CKSUM);
 176
 177                 /* Inner L4 */
 178                 w1.il4type = (ol_flags & PKT_TX_L4_MASK) >> 52;
 179
 180                 /* In case of no tunnel header use only
 181                  * shift IL3/IL4 fields a bit to use
 182                  * OL3/OL4 for header checksum
 183                  */
 184                 mask = !ol3type;
 185                 w1.u = ((w1.u & 0xFFFFFFFF00000000) >> (mask << 3)) |
 186                        ((w1.u & 0X00000000FFFFFFFF) >> (mask << 4));
 187
 188         } else if (flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F) {
 189                 const uint8_t csum = !!(ol_flags & PKT_TX_OUTER_UDP_CKSUM);
 190                 const uint8_t outer_l2_len = m->outer_l2_len;
 191
 192                 /* Outer L3 */
 193                 w1.ol3ptr = outer_l2_len;
 194                 w1.ol4ptr = outer_l2_len + m->outer_l3_len;
 195                 /* Increment it by 1 if it is IPV4 as 3 is with csum */
 196                 w1.ol3type = ((!!(ol_flags & PKT_TX_OUTER_IPV4)) << 1) +
 197                              ((!!(ol_flags & PKT_TX_OUTER_IPV6)) << 2) +
 198                              !!(ol_flags & PKT_TX_OUTER_IP_CKSUM);
 199
 200                 /* Outer L4 */
 201                 w1.ol4type = csum + (csum << 1);
 202
 203         } else if (flags & NIX_TX_OFFLOAD_L3_L4_CSUM_F) {
 204                 const uint8_t l2_len = m->l2_len;
 205
 206                 /* Always use OLXPTR and OLXTYPE when only
 207                  * when one header is present
 208                  */
 209
 210                 /* Inner L3 */
 211                 w1.ol3ptr = l2_len;
 212                 w1.ol4ptr = l2_len + m->l3_len;
 213                 /* Increment it by 1 if it is IPV4 as 3 is with csum */
 214                 w1.ol3type = ((!!(ol_flags & PKT_TX_IPV4)) << 1) +
 215                              ((!!(ol_flags & PKT_TX_IPV6)) << 2) +
 216                              !!(ol_flags & PKT_TX_IP_CKSUM);
 217
 218                 /* Inner L4 */
 219                 w1.ol4type = (ol_flags & PKT_TX_L4_MASK) >> 52;
 220         }
 221
 222         if (flags & NIX_TX_NEED_EXT_HDR && flags & NIX_TX_OFFLOAD_VLAN_QINQ_F) {
 223                 send_hdr_ext->w1.vlan1_ins_ena = !!(ol_flags & PKT_TX_VLAN);
 224                 /* HW will update ptr after vlan0 update */
 225                 send_hdr_ext->w1.vlan1_ins_ptr = 12;
 226                 send_hdr_ext->w1.vlan1_ins_tci = m->vlan_tci;
 227
 228                 send_hdr_ext->w1.vlan0_ins_ena = !!(ol_flags & PKT_TX_QINQ);
 229                 /* 2B before end of l2 header */
 230                 send_hdr_ext->w1.vlan0_ins_ptr = 12;
 231                 send_hdr_ext->w1.vlan0_ins_tci = m->vlan_tci_outer;
 232         }
 233
 234         if (flags & NIX_TX_OFFLOAD_TSO_F && (ol_flags & PKT_TX_TCP_SEG)) {
 235                 uint16_t lso_sb;
 236                 uint64_t mask;
 237
 238                 mask = -(!w1.il3type);
 239                 lso_sb = (mask & w1.ol4ptr) + (~mask & w1.il4ptr) + m->l4_len;
 240
 241                 send_hdr_ext->w0.lso_sb = lso_sb;
 242                 send_hdr_ext->w0.lso = 1;
 243                 send_hdr_ext->w0.lso_mps = m->tso_segsz;
 244                 send_hdr_ext->w0.lso_format =
 245                         NIX_LSO_FORMAT_IDX_TSOV4 + !!(ol_flags & PKT_TX_IPV6);
 246                 w1.ol4type = NIX_SENDL4TYPE_TCP_CKSUM;
 247
 248                 /* Handle tunnel tso */
 249                 if ((flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F) &&
 250                     (ol_flags & PKT_TX_TUNNEL_MASK)) {
 251                         const uint8_t is_udp_tun =
 252                                 (CNXK_NIX_UDP_TUN_BITMASK >>
 253                                  ((ol_flags & PKT_TX_TUNNEL_MASK) >> 45)) &
 254                                 0x1;
 255                         uint8_t shift = is_udp_tun ? 32 : 0;
 256
 257                         shift += (!!(ol_flags & PKT_TX_OUTER_IPV6) << 4);
 258                         shift += (!!(ol_flags & PKT_TX_IPV6) << 3);
 259
 260                         w1.il4type = NIX_SENDL4TYPE_TCP_CKSUM;
 261                         w1.ol4type = is_udp_tun ? NIX_SENDL4TYPE_UDP_CKSUM : 0;
 262                         /* Update format for UDP tunneled packet */
 263                         send_hdr_ext->w0.lso_format = (lso_tun_fmt >> shift);
 264                 }
 265         }
 266
 267         if (flags & NIX_TX_NEED_SEND_HDR_W1)
 268                 send_hdr->w1.u = w1.u;
 269
 270         if (!(flags & NIX_TX_MULTI_SEG_F)) {
 271                 sg->seg1_size = m->data_len;
 272                 *(rte_iova_t *)(++sg) = rte_mbuf_data_iova(m);
 273
 274                 if (flags & NIX_TX_OFFLOAD_MBUF_NOFF_F) {
 275                         /* DF bit = 1 if refcount of current mbuf or parent mbuf
 276                          *              is greater than 1
 277                          * DF bit = 0 otherwise
 278                          */
 279                         send_hdr->w0.df = cnxk_nix_prefree_seg(m);
 280                         /* Ensuring mbuf fields which got updated in
 281                          * cnxk_nix_prefree_seg are written before LMTST.
 282                          */
 283                         rte_io_wmb();
 284                 }
 285                 /* Mark mempool object as "put" since it is freed by NIX */
 286                 if (!send_hdr->w0.df)
 287                         __mempool_check_cookies(m->pool, (void **)&m, 1, 0);
 288         }
 289 }
 290
 291 static __rte_always_inline void
 292 cn9k_nix_xmit_prepare_tstamp(uint64_t *cmd, const uint64_t *send_mem_desc,
 293                              const uint64_t ol_flags, const uint16_t no_segdw,
 294                              const uint16_t flags)
 295 {
 296         if (flags & NIX_TX_OFFLOAD_TSTAMP_F) {
 297                 struct nix_send_mem_s *send_mem;
 298                 uint16_t off = (no_segdw - 1) << 1;
 299                 const uint8_t is_ol_tstamp = !(ol_flags & PKT_TX_IEEE1588_TMST);
 300
 301                 send_mem = (struct nix_send_mem_s *)(cmd + off);
 302                 if (flags & NIX_TX_MULTI_SEG_F) {
 303                         /* Retrieving the default desc values */
 304                         cmd[off] = send_mem_desc[6];
 305
 306                         /* Using compiler barier to avoid voilation of C
 307                          * aliasing rules.
 308                          */
 309                         rte_compiler_barrier();
 310                 }
 311
 312                 /* Packets for which PKT_TX_IEEE1588_TMST is not set, tx tstamp
 313                  * should not be recorded, hence changing the alg type to
 314                  * NIX_SENDMEMALG_SET and also changing send mem addr field to
 315                  * next 8 bytes as it corrpt the actual tx tstamp registered
 316                  * address.
 317                  */
 318                 send_mem->w0.cn9k.alg =
 319                         NIX_SENDMEMALG_SETTSTMP - (is_ol_tstamp);
 320
 321                 send_mem->addr = (rte_iova_t)((uint64_t *)send_mem_desc[7] +
 322                                               (is_ol_tstamp));
 323         }
 324 }
 325
 326 static __rte_always_inline void
 327 cn9k_nix_xmit_one(uint64_t *cmd, void *lmt_addr, const rte_iova_t io_addr,
 328                   const uint32_t flags)
 329 {
 330         uint64_t lmt_status;
 331
 332         do {
 333                 roc_lmt_mov(lmt_addr, cmd, cn9k_nix_tx_ext_subs(flags));
 334                 lmt_status = roc_lmt_submit_ldeor(io_addr);
 335         } while (lmt_status == 0);
 336 }
 337
 338 static __rte_always_inline void
 339 cn9k_nix_xmit_prep_lmt(uint64_t *cmd, void *lmt_addr, const uint32_t flags)
 340 {
 341         roc_lmt_mov(lmt_addr, cmd, cn9k_nix_tx_ext_subs(flags));
 342 }
 343
 344 static __rte_always_inline uint64_t
 345 cn9k_nix_xmit_submit_lmt(const rte_iova_t io_addr)
 346 {
 347         return roc_lmt_submit_ldeor(io_addr);
 348 }
 349
 350 static __rte_always_inline uint64_t
 351 cn9k_nix_xmit_submit_lmt_release(const rte_iova_t io_addr)
 352 {
 353         return roc_lmt_submit_ldeorl(io_addr);
 354 }
 355
 356 static __rte_always_inline uint16_t
 357 cn9k_nix_prepare_mseg(struct rte_mbuf *m, uint64_t *cmd, const uint16_t flags)
 358 {
 359         struct nix_send_hdr_s *send_hdr;
 360         union nix_send_sg_s *sg;
 361         struct rte_mbuf *m_next;
 362         uint64_t *slist, sg_u;
 363         uint64_t nb_segs;
 364         uint64_t segdw;
 365         uint8_t off, i;
 366
 367         send_hdr = (struct nix_send_hdr_s *)cmd;
 368         send_hdr->w0.total = m->pkt_len;
 369         send_hdr->w0.aura = roc_npa_aura_handle_to_aura(m->pool->pool_id);
 370
 371         if (flags & NIX_TX_NEED_EXT_HDR)
 372                 off = 2;
 373         else
 374                 off = 0;
 375
 376         sg = (union nix_send_sg_s *)&cmd[2 + off];
 377         /* Clear sg->u header before use */
 378         sg->u &= 0xFC00000000000000;
 379         sg_u = sg->u;
 380         slist = &cmd[3 + off];
 381
 382         i = 0;
 383         nb_segs = m->nb_segs;
 384
 385         /* Fill mbuf segments */
 386         do {
 387                 m_next = m->next;
 388                 sg_u = sg_u | ((uint64_t)m->data_len << (i << 4));
 389                 *slist = rte_mbuf_data_iova(m);
 390                 /* Set invert df if buffer is not to be freed by H/W */
 391                 if (flags & NIX_TX_OFFLOAD_MBUF_NOFF_F) {
 392                         sg_u |= (cnxk_nix_prefree_seg(m) << (i + 55));
 393                         /* Commit changes to mbuf */
 394                         rte_io_wmb();
 395                 }
 396                 /* Mark mempool object as "put" since it is freed by NIX */
 397 #ifdef RTE_LIBRTE_MEMPOOL_DEBUG
 398                 if (!(sg_u & (1ULL << (i + 55))))
 399                         __mempool_check_cookies(m->pool, (void **)&m, 1, 0);
 400                 rte_io_wmb();
 401 #endif
 402                 slist++;
 403                 i++;
 404                 nb_segs--;
 405                 if (i > 2 && nb_segs) {
 406                         i = 0;
 407                         /* Next SG subdesc */
 408                         *(uint64_t *)slist = sg_u & 0xFC00000000000000;
 409                         sg->u = sg_u;
 410                         sg->segs = 3;
 411                         sg = (union nix_send_sg_s *)slist;
 412                         sg_u = sg->u;
 413                         slist++;
 414                 }
 415                 m = m_next;
 416         } while (nb_segs);
 417
 418         sg->u = sg_u;
 419         sg->segs = i;
 420         segdw = (uint64_t *)slist - (uint64_t *)&cmd[2 + off];
 421         /* Roundup extra dwords to multiple of 2 */
 422         segdw = (segdw >> 1) + (segdw & 0x1);
 423         /* Default dwords */
 424         segdw += (off >> 1) + 1 + !!(flags & NIX_TX_OFFLOAD_TSTAMP_F);
 425         send_hdr->w0.sizem1 = segdw - 1;
 426
 427         return segdw;
 428 }
 429
 430 static __rte_always_inline void
 431 cn9k_nix_xmit_mseg_prep_lmt(uint64_t *cmd, void *lmt_addr, uint16_t segdw)
 432 {
 433         roc_lmt_mov_seg(lmt_addr, (const void *)cmd, segdw);
 434 }
 435
 436 static __rte_always_inline void
 437 cn9k_nix_xmit_mseg_one(uint64_t *cmd, void *lmt_addr, rte_iova_t io_addr,
 438                        uint16_t segdw)
 439 {
 440         uint64_t lmt_status;
 441
 442         do {
 443                 roc_lmt_mov_seg(lmt_addr, (const void *)cmd, segdw);
 444                 lmt_status = roc_lmt_submit_ldeor(io_addr);
 445         } while (lmt_status == 0);
 446 }
 447
 448 static __rte_always_inline void
 449 cn9k_nix_xmit_mseg_one_release(uint64_t *cmd, void *lmt_addr,
 450                                rte_iova_t io_addr, uint16_t segdw)
 451 {
 452         uint64_t lmt_status;
 453
 454         rte_io_wmb();
 455         do {
 456                 roc_lmt_mov_seg(lmt_addr, (const void *)cmd, segdw);
 457                 lmt_status = roc_lmt_submit_ldeor(io_addr);
 458         } while (lmt_status == 0);
 459 }
 460
 461 static __rte_always_inline uint16_t
 462 cn9k_nix_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t pkts,
 463                    uint64_t *cmd, const uint16_t flags)
 464 {
 465         struct cn9k_eth_txq *txq = tx_queue;
 466         const rte_iova_t io_addr = txq->io_addr;
 467         void *lmt_addr = txq->lmt_addr;
 468         uint64_t lso_tun_fmt;
 469         uint16_t i;
 470
 471         NIX_XMIT_FC_OR_RETURN(txq, pkts);
 472
 473         roc_lmt_mov(cmd, &txq->cmd[0], cn9k_nix_tx_ext_subs(flags));
 474
 475         /* Perform header writes before barrier for TSO */
 476         if (flags & NIX_TX_OFFLOAD_TSO_F) {
 477                 lso_tun_fmt = txq->lso_tun_fmt;
 478
 479                 for (i = 0; i < pkts; i++)
 480                         cn9k_nix_xmit_prepare_tso(tx_pkts[i], flags);
 481         }
 482
 483         /* Lets commit any changes in the packet here as no further changes
 484          * to the packet will be done unless no fast free is enabled.
 485          */
 486         if (!(flags & NIX_TX_OFFLOAD_MBUF_NOFF_F))
 487                 rte_io_wmb();
 488
 489         for (i = 0; i < pkts; i++) {
 490                 cn9k_nix_xmit_prepare(tx_pkts[i], cmd, flags, lso_tun_fmt);
 491                 cn9k_nix_xmit_prepare_tstamp(cmd, &txq->cmd[0],
 492                                              tx_pkts[i]->ol_flags, 4, flags);
 493                 cn9k_nix_xmit_one(cmd, lmt_addr, io_addr, flags);
 494         }
 495
 496         /* Reduce the cached count */
 497         txq->fc_cache_pkts -= pkts;
 498
 499         return pkts;
 500 }
 501
 502 static __rte_always_inline uint16_t
 503 cn9k_nix_xmit_pkts_mseg(void *tx_queue, struct rte_mbuf **tx_pkts,
 504                         uint16_t pkts, uint64_t *cmd, const uint16_t flags)
 505 {
 506         struct cn9k_eth_txq *txq = tx_queue;
 507         const rte_iova_t io_addr = txq->io_addr;
 508         void *lmt_addr = txq->lmt_addr;
 509         uint64_t lso_tun_fmt;
 510         uint16_t segdw;
 511         uint64_t i;
 512
 513         NIX_XMIT_FC_OR_RETURN(txq, pkts);
 514
 515         roc_lmt_mov(cmd, &txq->cmd[0], cn9k_nix_tx_ext_subs(flags));
 516
 517         /* Perform header writes before barrier for TSO */
 518         if (flags & NIX_TX_OFFLOAD_TSO_F) {
 519                 lso_tun_fmt = txq->lso_tun_fmt;
 520
 521                 for (i = 0; i < pkts; i++)
 522                         cn9k_nix_xmit_prepare_tso(tx_pkts[i], flags);
 523         }
 524
 525         /* Lets commit any changes in the packet here as no further changes
 526          * to the packet will be done unless no fast free is enabled.
 527          */
 528         if (!(flags & NIX_TX_OFFLOAD_MBUF_NOFF_F))
 529                 rte_io_wmb();
 530
 531         for (i = 0; i < pkts; i++) {
 532                 cn9k_nix_xmit_prepare(tx_pkts[i], cmd, flags, lso_tun_fmt);
 533                 segdw = cn9k_nix_prepare_mseg(tx_pkts[i], cmd, flags);
 534                 cn9k_nix_xmit_prepare_tstamp(cmd, &txq->cmd[0],
 535                                              tx_pkts[i]->ol_flags, segdw,
 536                                              flags);
 537                 cn9k_nix_xmit_mseg_one(cmd, lmt_addr, io_addr, segdw);
 538         }
 539
 540         /* Reduce the cached count */
 541         txq->fc_cache_pkts -= pkts;
 542
 543         return pkts;
 544 }
 545
 546 #if defined(RTE_ARCH_ARM64)
 547
 548 #define NIX_DESCS_PER_LOOP 4
 549 static __rte_always_inline uint16_t
 550 cn9k_nix_xmit_pkts_vector(void *tx_queue, struct rte_mbuf **tx_pkts,
 551                           uint16_t pkts, uint64_t *cmd, const uint16_t flags)
 552 {
 553         uint64x2_t dataoff_iova0, dataoff_iova1, dataoff_iova2, dataoff_iova3;
 554         uint64x2_t len_olflags0, len_olflags1, len_olflags2, len_olflags3;
 555         uint64x2_t cmd0[NIX_DESCS_PER_LOOP], cmd1[NIX_DESCS_PER_LOOP],
 556                 cmd2[NIX_DESCS_PER_LOOP], cmd3[NIX_DESCS_PER_LOOP];
 557         uint64_t *mbuf0, *mbuf1, *mbuf2, *mbuf3;
 558         uint64x2_t senddesc01_w0, senddesc23_w0;
 559         uint64x2_t senddesc01_w1, senddesc23_w1;
 560         uint64x2_t sendext01_w0, sendext23_w0;
 561         uint64x2_t sendext01_w1, sendext23_w1;
 562         uint64x2_t sendmem01_w0, sendmem23_w0;
 563         uint64x2_t sendmem01_w1, sendmem23_w1;
 564         uint64x2_t sgdesc01_w0, sgdesc23_w0;
 565         uint64x2_t sgdesc01_w1, sgdesc23_w1;
 566         struct cn9k_eth_txq *txq = tx_queue;
 567         uint64_t *lmt_addr = txq->lmt_addr;
 568         rte_iova_t io_addr = txq->io_addr;
 569         uint64x2_t ltypes01, ltypes23;
 570         uint64x2_t xtmp128, ytmp128;
 571         uint64x2_t xmask01, xmask23;
 572         uint64_t lmt_status, i;
 573         uint16_t pkts_left;
 574
 575         NIX_XMIT_FC_OR_RETURN(txq, pkts);
 576
 577         pkts_left = pkts & (NIX_DESCS_PER_LOOP - 1);
 578         pkts = RTE_ALIGN_FLOOR(pkts, NIX_DESCS_PER_LOOP);
 579
 580         /* Reduce the cached count */
 581         txq->fc_cache_pkts -= pkts;
 582
 583         /* Lets commit any changes in the packet here as no further changes
 584          * to the packet will be done unless no fast free is enabled.
 585          */
 586         if (!(flags & NIX_TX_OFFLOAD_MBUF_NOFF_F))
 587                 rte_io_wmb();
 588
 589         senddesc01_w0 = vld1q_dup_u64(&txq->cmd[0]);
 590         senddesc23_w0 = senddesc01_w0;
 591         senddesc01_w1 = vdupq_n_u64(0);
 592         senddesc23_w1 = senddesc01_w1;
 593
 594         /* Load command defaults into vector variables. */
 595         if (flags & NIX_TX_NEED_EXT_HDR) {
 596                 sendext01_w0 = vld1q_dup_u64(&txq->cmd[2]);
 597                 sendext23_w0 = sendext01_w0;
 598                 sendext01_w1 = vdupq_n_u64(12 | 12U << 24);
 599                 sendext23_w1 = sendext01_w1;
 600                 sgdesc01_w0 = vld1q_dup_u64(&txq->cmd[4]);
 601                 sgdesc23_w0 = sgdesc01_w0;
 602                 if (flags & NIX_TX_OFFLOAD_TSTAMP_F) {
 603                         sendmem01_w0 = vld1q_dup_u64(&txq->cmd[6]);
 604                         sendmem23_w0 = sendmem01_w0;
 605                         sendmem01_w1 = vld1q_dup_u64(&txq->cmd[7]);
 606                         sendmem23_w1 = sendmem01_w1;
 607                 }
 608         } else {
 609                 sgdesc01_w0 = vld1q_dup_u64(&txq->cmd[2]);
 610                 sgdesc23_w0 = sgdesc01_w0;
 611         }
 612
 613         for (i = 0; i < pkts; i += NIX_DESCS_PER_LOOP) {
 614                 /* Clear lower 32bit of SEND_HDR_W0 and SEND_SG_W0 */
 615                 senddesc01_w0 =
 616                         vbicq_u64(senddesc01_w0, vdupq_n_u64(0xFFFFFFFF));
 617                 sgdesc01_w0 = vbicq_u64(sgdesc01_w0, vdupq_n_u64(0xFFFFFFFF));
 618
 619                 senddesc23_w0 = senddesc01_w0;
 620                 sgdesc23_w0 = sgdesc01_w0;
 621
 622                 /* Clear vlan enables. */
 623                 if (flags & NIX_TX_NEED_EXT_HDR) {
 624                         sendext01_w1 = vbicq_u64(sendext01_w1,
 625                                                  vdupq_n_u64(0x3FFFF00FFFF00));
 626                         sendext23_w1 = sendext01_w1;
 627                 }
 628
 629                 if (flags & NIX_TX_OFFLOAD_TSTAMP_F) {
 630                         /* Reset send mem alg to SETTSTMP from SUB*/
 631                         sendmem01_w0 = vbicq_u64(sendmem01_w0,
 632                                                  vdupq_n_u64(BIT_ULL(59)));
 633                         /* Reset send mem address to default. */
 634                         sendmem01_w1 =
 635                                 vbicq_u64(sendmem01_w1, vdupq_n_u64(0xF));
 636                         sendmem23_w0 = sendmem01_w0;
 637                         sendmem23_w1 = sendmem01_w1;
 638                 }
 639
 640                 /* Move mbufs to iova */
 641                 mbuf0 = (uint64_t *)tx_pkts[0];
 642                 mbuf1 = (uint64_t *)tx_pkts[1];
 643                 mbuf2 = (uint64_t *)tx_pkts[2];
 644                 mbuf3 = (uint64_t *)tx_pkts[3];
 645
 646                 mbuf0 = (uint64_t *)((uintptr_t)mbuf0 +
 647                                      offsetof(struct rte_mbuf, buf_iova));
 648                 mbuf1 = (uint64_t *)((uintptr_t)mbuf1 +
 649                                      offsetof(struct rte_mbuf, buf_iova));
 650                 mbuf2 = (uint64_t *)((uintptr_t)mbuf2 +
 651                                      offsetof(struct rte_mbuf, buf_iova));
 652                 mbuf3 = (uint64_t *)((uintptr_t)mbuf3 +
 653                                      offsetof(struct rte_mbuf, buf_iova));
 654                 /*
 655                  * Get mbuf's, olflags, iova, pktlen, dataoff
 656                  * dataoff_iovaX.D[0] = iova,
 657                  * dataoff_iovaX.D[1](15:0) = mbuf->dataoff
 658                  * len_olflagsX.D[0] = ol_flags,
 659                  * len_olflagsX.D[1](63:32) = mbuf->pkt_len
 660                  */
 661                 dataoff_iova0 = vld1q_u64(mbuf0);
 662                 len_olflags0 = vld1q_u64(mbuf0 + 2);
 663                 dataoff_iova1 = vld1q_u64(mbuf1);
 664                 len_olflags1 = vld1q_u64(mbuf1 + 2);
 665                 dataoff_iova2 = vld1q_u64(mbuf2);
 666                 len_olflags2 = vld1q_u64(mbuf2 + 2);
 667                 dataoff_iova3 = vld1q_u64(mbuf3);
 668                 len_olflags3 = vld1q_u64(mbuf3 + 2);
 669
 670                 /* Move mbufs to point pool */
 671                 mbuf0 = (uint64_t *)((uintptr_t)mbuf0 +
 672                                      offsetof(struct rte_mbuf, pool) -
 673                                      offsetof(struct rte_mbuf, buf_iova));
 674                 mbuf1 = (uint64_t *)((uintptr_t)mbuf1 +
 675                                      offsetof(struct rte_mbuf, pool) -
 676                                      offsetof(struct rte_mbuf, buf_iova));
 677                 mbuf2 = (uint64_t *)((uintptr_t)mbuf2 +
 678                                      offsetof(struct rte_mbuf, pool) -
 679                                      offsetof(struct rte_mbuf, buf_iova));
 680                 mbuf3 = (uint64_t *)((uintptr_t)mbuf3 +
 681                                      offsetof(struct rte_mbuf, pool) -
 682                                      offsetof(struct rte_mbuf, buf_iova));
 683
 684                 if (flags & (NIX_TX_OFFLOAD_OL3_OL4_CSUM_F |
 685                              NIX_TX_OFFLOAD_L3_L4_CSUM_F)) {
 686                         /* Get tx_offload for ol2, ol3, l2, l3 lengths */
 687                         /*
 688                          * E(8):OL2_LEN(7):OL3_LEN(9):E(24):L3_LEN(9):L2_LEN(7)
 689                          * E(8):OL2_LEN(7):OL3_LEN(9):E(24):L3_LEN(9):L2_LEN(7)
 690                          */
 691
 692                         asm volatile("LD1 {%[a].D}[0],[%[in]]\n\t"
 693                                      : [a] "+w"(senddesc01_w1)
 694                                      : [in] "r"(mbuf0 + 2)
 695                                      : "memory");
 696
 697                         asm volatile("LD1 {%[a].D}[1],[%[in]]\n\t"
 698                                      : [a] "+w"(senddesc01_w1)
 699                                      : [in] "r"(mbuf1 + 2)
 700                                      : "memory");
 701
 702                         asm volatile("LD1 {%[b].D}[0],[%[in]]\n\t"
 703                                      : [b] "+w"(senddesc23_w1)
 704                                      : [in] "r"(mbuf2 + 2)
 705                                      : "memory");
 706
 707                         asm volatile("LD1 {%[b].D}[1],[%[in]]\n\t"
 708                                      : [b] "+w"(senddesc23_w1)
 709                                      : [in] "r"(mbuf3 + 2)
 710                                      : "memory");
 711
 712                         /* Get pool pointer alone */
 713                         mbuf0 = (uint64_t *)*mbuf0;
 714                         mbuf1 = (uint64_t *)*mbuf1;
 715                         mbuf2 = (uint64_t *)*mbuf2;
 716                         mbuf3 = (uint64_t *)*mbuf3;
 717                 } else {
 718                         /* Get pool pointer alone */
 719                         mbuf0 = (uint64_t *)*mbuf0;
 720                         mbuf1 = (uint64_t *)*mbuf1;
 721                         mbuf2 = (uint64_t *)*mbuf2;
 722                         mbuf3 = (uint64_t *)*mbuf3;
 723                 }
 724
 725                 const uint8x16_t shuf_mask2 = {
 726                         0x4, 0x5, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 727                         0xc, 0xd, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 728                 };
 729                 xtmp128 = vzip2q_u64(len_olflags0, len_olflags1);
 730                 ytmp128 = vzip2q_u64(len_olflags2, len_olflags3);
 731
 732                 /* Clear dataoff_iovaX.D[1] bits other than dataoff(15:0) */
 733                 const uint64x2_t and_mask0 = {
 734                         0xFFFFFFFFFFFFFFFF,
 735                         0x000000000000FFFF,
 736                 };
 737
 738                 dataoff_iova0 = vandq_u64(dataoff_iova0, and_mask0);
 739                 dataoff_iova1 = vandq_u64(dataoff_iova1, and_mask0);
 740                 dataoff_iova2 = vandq_u64(dataoff_iova2, and_mask0);
 741                 dataoff_iova3 = vandq_u64(dataoff_iova3, and_mask0);
 742
 743                 /*
 744                  * Pick only 16 bits of pktlen preset at bits 63:32
 745                  * and place them at bits 15:0.
 746                  */
 747                 xtmp128 = vqtbl1q_u8(xtmp128, shuf_mask2);
 748                 ytmp128 = vqtbl1q_u8(ytmp128, shuf_mask2);
 749
 750                 /* Add pairwise to get dataoff + iova in sgdesc_w1 */
 751                 sgdesc01_w1 = vpaddq_u64(dataoff_iova0, dataoff_iova1);
 752                 sgdesc23_w1 = vpaddq_u64(dataoff_iova2, dataoff_iova3);
 753
 754                 /* Orr both sgdesc_w0 and senddesc_w0 with 16 bits of
 755                  * pktlen at 15:0 position.
 756                  */
 757                 sgdesc01_w0 = vorrq_u64(sgdesc01_w0, xtmp128);
 758                 sgdesc23_w0 = vorrq_u64(sgdesc23_w0, ytmp128);
 759                 senddesc01_w0 = vorrq_u64(senddesc01_w0, xtmp128);
 760                 senddesc23_w0 = vorrq_u64(senddesc23_w0, ytmp128);
 761
 762                 /* Move mbuf to point to pool_id. */
 763                 mbuf0 = (uint64_t *)((uintptr_t)mbuf0 +
 764                                      offsetof(struct rte_mempool, pool_id));
 765                 mbuf1 = (uint64_t *)((uintptr_t)mbuf1 +
 766                                      offsetof(struct rte_mempool, pool_id));
 767                 mbuf2 = (uint64_t *)((uintptr_t)mbuf2 +
 768                                      offsetof(struct rte_mempool, pool_id));
 769                 mbuf3 = (uint64_t *)((uintptr_t)mbuf3 +
 770                                      offsetof(struct rte_mempool, pool_id));
 771
 772                 if ((flags & NIX_TX_OFFLOAD_L3_L4_CSUM_F) &&
 773                     !(flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F)) {
 774                         /*
 775                          * Lookup table to translate ol_flags to
 776                          * il3/il4 types. But we still use ol3/ol4 types in
 777                          * senddesc_w1 as only one header processing is enabled.
 778                          */
 779                         const uint8x16_t tbl = {
 780                                 /* [0-15] = il4type:il3type */
 781                                 0x04, /* none (IPv6 assumed) */
 782                                 0x14, /* PKT_TX_TCP_CKSUM (IPv6 assumed) */
 783                                 0x24, /* PKT_TX_SCTP_CKSUM (IPv6 assumed) */
 784                                 0x34, /* PKT_TX_UDP_CKSUM (IPv6 assumed) */
 785                                 0x03, /* PKT_TX_IP_CKSUM */
 786                                 0x13, /* PKT_TX_IP_CKSUM | PKT_TX_TCP_CKSUM */
 787                                 0x23, /* PKT_TX_IP_CKSUM | PKT_TX_SCTP_CKSUM */
 788                                 0x33, /* PKT_TX_IP_CKSUM | PKT_TX_UDP_CKSUM */
 789                                 0x02, /* PKT_TX_IPV4  */
 790                                 0x12, /* PKT_TX_IPV4 | PKT_TX_TCP_CKSUM */
 791                                 0x22, /* PKT_TX_IPV4 | PKT_TX_SCTP_CKSUM */
 792                                 0x32, /* PKT_TX_IPV4 | PKT_TX_UDP_CKSUM */
 793                                 0x03, /* PKT_TX_IPV4 | PKT_TX_IP_CKSUM */
 794                                 0x13, /* PKT_TX_IPV4 | PKT_TX_IP_CKSUM |
 795                                        * PKT_TX_TCP_CKSUM
 796                                        */
 797                                 0x23, /* PKT_TX_IPV4 | PKT_TX_IP_CKSUM |
 798                                        * PKT_TX_SCTP_CKSUM
 799                                        */
 800                                 0x33, /* PKT_TX_IPV4 | PKT_TX_IP_CKSUM |
 801                                        * PKT_TX_UDP_CKSUM
 802                                        */
 803                         };
 804
 805                         /* Extract olflags to translate to iltypes */
 806                         xtmp128 = vzip1q_u64(len_olflags0, len_olflags1);
 807                         ytmp128 = vzip1q_u64(len_olflags2, len_olflags3);
 808
 809                         /*
 810                          * E(47):L3_LEN(9):L2_LEN(7+z)
 811                          * E(47):L3_LEN(9):L2_LEN(7+z)
 812                          */
 813                         senddesc01_w1 = vshlq_n_u64(senddesc01_w1, 1);
 814                         senddesc23_w1 = vshlq_n_u64(senddesc23_w1, 1);
 815
 816                         /* Move OLFLAGS bits 55:52 to 51:48
 817                          * with zeros preprended on the byte and rest
 818                          * don't care
 819                          */
 820                         xtmp128 = vshrq_n_u8(xtmp128, 4);
 821                         ytmp128 = vshrq_n_u8(ytmp128, 4);
 822                         /*
 823                          * E(48):L3_LEN(8):L2_LEN(z+7)
 824                          * E(48):L3_LEN(8):L2_LEN(z+7)
 825                          */
 826                         const int8x16_t tshft3 = {
 827                                 -1, 0, 8, 8, 8, 8, 8, 8,
 828                                 -1, 0, 8, 8, 8, 8, 8, 8,
 829                         };
 830
 831                         senddesc01_w1 = vshlq_u8(senddesc01_w1, tshft3);
 832                         senddesc23_w1 = vshlq_u8(senddesc23_w1, tshft3);
 833
 834                         /* Do the lookup */
 835                         ltypes01 = vqtbl1q_u8(tbl, xtmp128);
 836                         ltypes23 = vqtbl1q_u8(tbl, ytmp128);
 837
 838                         /* Pick only relevant fields i.e Bit 48:55 of iltype
 839                          * and place it in ol3/ol4type of senddesc_w1
 840                          */
 841                         const uint8x16_t shuf_mask0 = {
 842                                 0xFF, 0xFF, 0xFF, 0xFF, 0x6, 0xFF, 0xFF, 0xFF,
 843                                 0xFF, 0xFF, 0xFF, 0xFF, 0xE, 0xFF, 0xFF, 0xFF,
 844                         };
 845
 846                         ltypes01 = vqtbl1q_u8(ltypes01, shuf_mask0);
 847                         ltypes23 = vqtbl1q_u8(ltypes23, shuf_mask0);
 848
 849                         /* Prepare ol4ptr, ol3ptr from ol3len, ol2len.
 850                          * a [E(32):E(16):OL3(8):OL2(8)]
 851                          * a = a + (a << 8)
 852                          * a [E(32):E(16):(OL3+OL2):OL2]
 853                          * => E(32):E(16)::OL4PTR(8):OL3PTR(8)
 854                          */
 855                         senddesc01_w1 = vaddq_u8(senddesc01_w1,
 856                                                  vshlq_n_u16(senddesc01_w1, 8));
 857                         senddesc23_w1 = vaddq_u8(senddesc23_w1,
 858                                                  vshlq_n_u16(senddesc23_w1, 8));
 859
 860                         /* Move ltypes to senddesc*_w1 */
 861                         senddesc01_w1 = vorrq_u64(senddesc01_w1, ltypes01);
 862                         senddesc23_w1 = vorrq_u64(senddesc23_w1, ltypes23);
 863                 } else if (!(flags & NIX_TX_OFFLOAD_L3_L4_CSUM_F) &&
 864                            (flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F)) {
 865                         /*
 866                          * Lookup table to translate ol_flags to
 867                          * ol3/ol4 types.
 868                          */
 869
 870                         const uint8x16_t tbl = {
 871                                 /* [0-15] = ol4type:ol3type */
 872                                 0x00, /* none */
 873                                 0x03, /* OUTER_IP_CKSUM */
 874                                 0x02, /* OUTER_IPV4 */
 875                                 0x03, /* OUTER_IPV4 | OUTER_IP_CKSUM */
 876                                 0x04, /* OUTER_IPV6 */
 877                                 0x00, /* OUTER_IPV6 | OUTER_IP_CKSUM */
 878                                 0x00, /* OUTER_IPV6 | OUTER_IPV4 */
 879                                 0x00, /* OUTER_IPV6 | OUTER_IPV4 |
 880                                        * OUTER_IP_CKSUM
 881                                        */
 882                                 0x00, /* OUTER_UDP_CKSUM */
 883                                 0x33, /* OUTER_UDP_CKSUM | OUTER_IP_CKSUM */
 884                                 0x32, /* OUTER_UDP_CKSUM | OUTER_IPV4 */
 885                                 0x33, /* OUTER_UDP_CKSUM | OUTER_IPV4 |
 886                                        * OUTER_IP_CKSUM
 887                                        */
 888                                 0x34, /* OUTER_UDP_CKSUM | OUTER_IPV6 */
 889                                 0x00, /* OUTER_UDP_CKSUM | OUTER_IPV6 |
 890                                        * OUTER_IP_CKSUM
 891                                        */
 892                                 0x00, /* OUTER_UDP_CKSUM | OUTER_IPV6 |
 893                                        * OUTER_IPV4
 894                                        */
 895                                 0x00, /* OUTER_UDP_CKSUM | OUTER_IPV6 |
 896                                        * OUTER_IPV4 | OUTER_IP_CKSUM
 897                                        */
 898                         };
 899
 900                         /* Extract olflags to translate to iltypes */
 901                         xtmp128 = vzip1q_u64(len_olflags0, len_olflags1);
 902                         ytmp128 = vzip1q_u64(len_olflags2, len_olflags3);
 903
 904                         /*
 905                          * E(47):OL3_LEN(9):OL2_LEN(7+z)
 906                          * E(47):OL3_LEN(9):OL2_LEN(7+z)
 907                          */
 908                         const uint8x16_t shuf_mask5 = {
 909                                 0x6, 0x5, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 910                                 0xE, 0xD, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 911                         };
 912                         senddesc01_w1 = vqtbl1q_u8(senddesc01_w1, shuf_mask5);
 913                         senddesc23_w1 = vqtbl1q_u8(senddesc23_w1, shuf_mask5);
 914
 915                         /* Extract outer ol flags only */
 916                         const uint64x2_t o_cksum_mask = {
 917                                 0x1C00020000000000,
 918                                 0x1C00020000000000,
 919                         };
 920
 921                         xtmp128 = vandq_u64(xtmp128, o_cksum_mask);
 922                         ytmp128 = vandq_u64(ytmp128, o_cksum_mask);
 923
 924                         /* Extract OUTER_UDP_CKSUM bit 41 and
 925                          * move it to bit 61
 926                          */
 927
 928                         xtmp128 = xtmp128 | vshlq_n_u64(xtmp128, 20);
 929                         ytmp128 = ytmp128 | vshlq_n_u64(ytmp128, 20);
 930
 931                         /* Shift oltype by 2 to start nibble from BIT(56)
 932                          * instead of BIT(58)
 933                          */
 934                         xtmp128 = vshrq_n_u8(xtmp128, 2);
 935                         ytmp128 = vshrq_n_u8(ytmp128, 2);
 936                         /*
 937                          * E(48):L3_LEN(8):L2_LEN(z+7)
 938                          * E(48):L3_LEN(8):L2_LEN(z+7)
 939                          */
 940                         const int8x16_t tshft3 = {
 941                                 -1, 0, 8, 8, 8, 8, 8, 8,
 942                                 -1, 0, 8, 8, 8, 8, 8, 8,
 943                         };
 944
 945                         senddesc01_w1 = vshlq_u8(senddesc01_w1, tshft3);
 946                         senddesc23_w1 = vshlq_u8(senddesc23_w1, tshft3);
 947
 948                         /* Do the lookup */
 949                         ltypes01 = vqtbl1q_u8(tbl, xtmp128);
 950                         ltypes23 = vqtbl1q_u8(tbl, ytmp128);
 951
 952                         /* Pick only relevant fields i.e Bit 56:63 of oltype
 953                          * and place it in ol3/ol4type of senddesc_w1
 954                          */
 955                         const uint8x16_t shuf_mask0 = {
 956                                 0xFF, 0xFF, 0xFF, 0xFF, 0x7, 0xFF, 0xFF, 0xFF,
 957                                 0xFF, 0xFF, 0xFF, 0xFF, 0xF, 0xFF, 0xFF, 0xFF,
 958                         };
 959
 960                         ltypes01 = vqtbl1q_u8(ltypes01, shuf_mask0);
 961                         ltypes23 = vqtbl1q_u8(ltypes23, shuf_mask0);
 962
 963                         /* Prepare ol4ptr, ol3ptr from ol3len, ol2len.
 964                          * a [E(32):E(16):OL3(8):OL2(8)]
 965                          * a = a + (a << 8)
 966                          * a [E(32):E(16):(OL3+OL2):OL2]
 967                          * => E(32):E(16)::OL4PTR(8):OL3PTR(8)
 968                          */
 969                         senddesc01_w1 = vaddq_u8(senddesc01_w1,
 970                                                  vshlq_n_u16(senddesc01_w1, 8));
 971                         senddesc23_w1 = vaddq_u8(senddesc23_w1,
 972                                                  vshlq_n_u16(senddesc23_w1, 8));
 973
 974                         /* Move ltypes to senddesc*_w1 */
 975                         senddesc01_w1 = vorrq_u64(senddesc01_w1, ltypes01);
 976                         senddesc23_w1 = vorrq_u64(senddesc23_w1, ltypes23);
 977                 } else if ((flags & NIX_TX_OFFLOAD_L3_L4_CSUM_F) &&
 978                            (flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F)) {
 979                         /* Lookup table to translate ol_flags to
 980                          * ol4type, ol3type, il4type, il3type of senddesc_w1
 981                          */
 982                         const uint8x16x2_t tbl = {{
 983                                 {
 984                                         /* [0-15] = il4type:il3type */
 985                                         0x04, /* none (IPv6) */
 986                                         0x14, /* PKT_TX_TCP_CKSUM (IPv6) */
 987                                         0x24, /* PKT_TX_SCTP_CKSUM (IPv6) */
 988                                         0x34, /* PKT_TX_UDP_CKSUM (IPv6) */
 989                                         0x03, /* PKT_TX_IP_CKSUM */
 990                                         0x13, /* PKT_TX_IP_CKSUM |
 991                                                * PKT_TX_TCP_CKSUM
 992                                                */
 993                                         0x23, /* PKT_TX_IP_CKSUM |
 994                                                * PKT_TX_SCTP_CKSUM
 995                                                */
 996                                         0x33, /* PKT_TX_IP_CKSUM |
 997                                                * PKT_TX_UDP_CKSUM
 998                                                */
 999                                         0x02, /* PKT_TX_IPV4 */
1000                                         0x12, /* PKT_TX_IPV4 |
1001                                                * PKT_TX_TCP_CKSUM
1002                                                */
1003                                         0x22, /* PKT_TX_IPV4 |
1004                                                * PKT_TX_SCTP_CKSUM
1005                                                */
1006                                         0x32, /* PKT_TX_IPV4 |
1007                                                * PKT_TX_UDP_CKSUM
1008                                                */
1009                                         0x03, /* PKT_TX_IPV4 |
1010                                                * PKT_TX_IP_CKSUM
1011                                                */
1012                                         0x13, /* PKT_TX_IPV4 | PKT_TX_IP_CKSUM |
1013                                                * PKT_TX_TCP_CKSUM
1014                                                */
1015                                         0x23, /* PKT_TX_IPV4 | PKT_TX_IP_CKSUM |
1016                                                * PKT_TX_SCTP_CKSUM
1017                                                */
1018                                         0x33, /* PKT_TX_IPV4 | PKT_TX_IP_CKSUM |
1019                                                * PKT_TX_UDP_CKSUM
1020                                                */
1021                                 },
1022
1023                                 {
1024                                         /* [16-31] = ol4type:ol3type */
1025                                         0x00, /* none */
1026                                         0x03, /* OUTER_IP_CKSUM */
1027                                         0x02, /* OUTER_IPV4 */
1028                                         0x03, /* OUTER_IPV4 | OUTER_IP_CKSUM */
1029                                         0x04, /* OUTER_IPV6 */
1030                                         0x00, /* OUTER_IPV6 | OUTER_IP_CKSUM */
1031                                         0x00, /* OUTER_IPV6 | OUTER_IPV4 */
1032                                         0x00, /* OUTER_IPV6 | OUTER_IPV4 |
1033                                                * OUTER_IP_CKSUM
1034                                                */
1035                                         0x00, /* OUTER_UDP_CKSUM */
1036                                         0x33, /* OUTER_UDP_CKSUM |
1037                                                * OUTER_IP_CKSUM
1038                                                */
1039                                         0x32, /* OUTER_UDP_CKSUM |
1040                                                * OUTER_IPV4
1041                                                */
1042                                         0x33, /* OUTER_UDP_CKSUM |
1043                                                * OUTER_IPV4 | OUTER_IP_CKSUM
1044                                                */
1045                                         0x34, /* OUTER_UDP_CKSUM |
1046                                                * OUTER_IPV6
1047                                                */
1048                                         0x00, /* OUTER_UDP_CKSUM | OUTER_IPV6 |
1049                                                * OUTER_IP_CKSUM
1050                                                */
1051                                         0x00, /* OUTER_UDP_CKSUM | OUTER_IPV6 |
1052                                                * OUTER_IPV4
1053                                                */
1054                                         0x00, /* OUTER_UDP_CKSUM | OUTER_IPV6 |
1055                                                * OUTER_IPV4 | OUTER_IP_CKSUM
1056                                                */
1057                                 },
1058                         }};
1059
1060                         /* Extract olflags to translate to oltype & iltype */
1061                         xtmp128 = vzip1q_u64(len_olflags0, len_olflags1);
1062                         ytmp128 = vzip1q_u64(len_olflags2, len_olflags3);
1063
1064                         /*
1065                          * E(8):OL2_LN(7):OL3_LN(9):E(23):L3_LN(9):L2_LN(7+z)
1066                          * E(8):OL2_LN(7):OL3_LN(9):E(23):L3_LN(9):L2_LN(7+z)
1067                          */
1068                         const uint32x4_t tshft_4 = {
1069                                 1,
1070                                 0,
1071                                 1,
1072                                 0,
1073                         };
1074                         senddesc01_w1 = vshlq_u32(senddesc01_w1, tshft_4);
1075                         senddesc23_w1 = vshlq_u32(senddesc23_w1, tshft_4);
1076
1077                         /*
1078                          * E(32):L3_LEN(8):L2_LEN(7+Z):OL3_LEN(8):OL2_LEN(7+Z)
1079                          * E(32):L3_LEN(8):L2_LEN(7+Z):OL3_LEN(8):OL2_LEN(7+Z)
1080                          */
1081                         const uint8x16_t shuf_mask5 = {
1082                                 0x6, 0x5, 0x0, 0x1, 0xFF, 0xFF, 0xFF, 0xFF,
1083                                 0xE, 0xD, 0x8, 0x9, 0xFF, 0xFF, 0xFF, 0xFF,
1084                         };
1085                         senddesc01_w1 = vqtbl1q_u8(senddesc01_w1, shuf_mask5);
1086                         senddesc23_w1 = vqtbl1q_u8(senddesc23_w1, shuf_mask5);
1087
1088                         /* Extract outer and inner header ol_flags */
1089                         const uint64x2_t oi_cksum_mask = {
1090                                 0x1CF0020000000000,
1091                                 0x1CF0020000000000,
1092                         };
1093
1094                         xtmp128 = vandq_u64(xtmp128, oi_cksum_mask);
1095                         ytmp128 = vandq_u64(ytmp128, oi_cksum_mask);
1096
1097                         /* Extract OUTER_UDP_CKSUM bit 41 and
1098                          * move it to bit 61
1099                          */
1100
1101                         xtmp128 = xtmp128 | vshlq_n_u64(xtmp128, 20);
1102                         ytmp128 = ytmp128 | vshlq_n_u64(ytmp128, 20);
1103
1104                         /* Shift right oltype by 2 and iltype by 4
1105                          * to start oltype nibble from BIT(58)
1106                          * instead of BIT(56) and iltype nibble from BIT(48)
1107                          * instead of BIT(52).
1108                          */
1109                         const int8x16_t tshft5 = {
1110                                 8, 8, 8, 8, 8, 8, -4, -2,
1111                                 8, 8, 8, 8, 8, 8, -4, -2,
1112                         };
1113
1114                         xtmp128 = vshlq_u8(xtmp128, tshft5);
1115                         ytmp128 = vshlq_u8(ytmp128, tshft5);
1116                         /*
1117                          * E(32):L3_LEN(8):L2_LEN(8):OL3_LEN(8):OL2_LEN(8)
1118                          * E(32):L3_LEN(8):L2_LEN(8):OL3_LEN(8):OL2_LEN(8)
1119                          */
1120                         const int8x16_t tshft3 = {
1121                                 -1, 0, -1, 0, 0, 0, 0, 0,
1122                                 -1, 0, -1, 0, 0, 0, 0, 0,
1123                         };
1124
1125                         senddesc01_w1 = vshlq_u8(senddesc01_w1, tshft3);
1126                         senddesc23_w1 = vshlq_u8(senddesc23_w1, tshft3);
1127
1128                         /* Mark Bit(4) of oltype */
1129                         const uint64x2_t oi_cksum_mask2 = {
1130                                 0x1000000000000000,
1131                                 0x1000000000000000,
1132                         };
1133
1134                         xtmp128 = vorrq_u64(xtmp128, oi_cksum_mask2);
1135                         ytmp128 = vorrq_u64(ytmp128, oi_cksum_mask2);
1136
1137                         /* Do the lookup */
1138                         ltypes01 = vqtbl2q_u8(tbl, xtmp128);
1139                         ltypes23 = vqtbl2q_u8(tbl, ytmp128);
1140
1141                         /* Pick only relevant fields i.e Bit 48:55 of iltype and
1142                          * Bit 56:63 of oltype and place it in corresponding
1143                          * place in senddesc_w1.
1144                          */
1145                         const uint8x16_t shuf_mask0 = {
1146                                 0xFF, 0xFF, 0xFF, 0xFF, 0x7, 0x6, 0xFF, 0xFF,
1147                                 0xFF, 0xFF, 0xFF, 0xFF, 0xF, 0xE, 0xFF, 0xFF,
1148                         };
1149
1150                         ltypes01 = vqtbl1q_u8(ltypes01, shuf_mask0);
1151                         ltypes23 = vqtbl1q_u8(ltypes23, shuf_mask0);
1152
1153                         /* Prepare l4ptr, l3ptr, ol4ptr, ol3ptr from
1154                          * l3len, l2len, ol3len, ol2len.
1155                          * a [E(32):L3(8):L2(8):OL3(8):OL2(8)]
1156                          * a = a + (a << 8)
1157                          * a [E:(L3+L2):(L2+OL3):(OL3+OL2):OL2]
1158                          * a = a + (a << 16)
1159                          * a [E:(L3+L2+OL3+OL2):(L2+OL3+OL2):(OL3+OL2):OL2]
1160                          * => E(32):IL4PTR(8):IL3PTR(8):OL4PTR(8):OL3PTR(8)
1161                          */
1162                         senddesc01_w1 = vaddq_u8(senddesc01_w1,
1163                                                  vshlq_n_u32(senddesc01_w1, 8));
1164                         senddesc23_w1 = vaddq_u8(senddesc23_w1,
1165                                                  vshlq_n_u32(senddesc23_w1, 8));
1166
1167                         /* Continue preparing l4ptr, l3ptr, ol4ptr, ol3ptr */
1168                         senddesc01_w1 = vaddq_u8(
1169                                 senddesc01_w1, vshlq_n_u32(senddesc01_w1, 16));
1170                         senddesc23_w1 = vaddq_u8(
1171                                 senddesc23_w1, vshlq_n_u32(senddesc23_w1, 16));
1172
1173                         /* Move ltypes to senddesc*_w1 */
1174                         senddesc01_w1 = vorrq_u64(senddesc01_w1, ltypes01);
1175                         senddesc23_w1 = vorrq_u64(senddesc23_w1, ltypes23);
1176                 }
1177
1178                 xmask01 = vdupq_n_u64(0);
1179                 xmask23 = xmask01;
1180                 asm volatile("LD1 {%[a].H}[0],[%[in]]\n\t"
1181                              : [a] "+w"(xmask01)
1182                              : [in] "r"(mbuf0)
1183                              : "memory");
1184
1185                 asm volatile("LD1 {%[a].H}[4],[%[in]]\n\t"
1186                              : [a] "+w"(xmask01)
1187                              : [in] "r"(mbuf1)
1188                              : "memory");
1189
1190                 asm volatile("LD1 {%[b].H}[0],[%[in]]\n\t"
1191                              : [b] "+w"(xmask23)
1192                              : [in] "r"(mbuf2)
1193                              : "memory");
1194
1195                 asm volatile("LD1 {%[b].H}[4],[%[in]]\n\t"
1196                              : [b] "+w"(xmask23)
1197                              : [in] "r"(mbuf3)
1198                              : "memory");
1199                 xmask01 = vshlq_n_u64(xmask01, 20);
1200                 xmask23 = vshlq_n_u64(xmask23, 20);
1201
1202                 senddesc01_w0 = vorrq_u64(senddesc01_w0, xmask01);
1203                 senddesc23_w0 = vorrq_u64(senddesc23_w0, xmask23);
1204
1205                 if (flags & NIX_TX_OFFLOAD_VLAN_QINQ_F) {
1206                         /* Tx ol_flag for vlan. */
1207                         const uint64x2_t olv = {PKT_TX_VLAN, PKT_TX_VLAN};
1208                         /* Bit enable for VLAN1 */
1209                         const uint64x2_t mlv = {BIT_ULL(49), BIT_ULL(49)};
1210                         /* Tx ol_flag for QnQ. */
1211                         const uint64x2_t olq = {PKT_TX_QINQ, PKT_TX_QINQ};
1212                         /* Bit enable for VLAN0 */
1213                         const uint64x2_t mlq = {BIT_ULL(48), BIT_ULL(48)};
1214                         /* Load vlan values from packet. outer is VLAN 0 */
1215                         uint64x2_t ext01 = {
1216                                 ((uint32_t)tx_pkts[0]->vlan_tci_outer) << 8 |
1217                                         ((uint64_t)tx_pkts[0]->vlan_tci) << 32,
1218                                 ((uint32_t)tx_pkts[1]->vlan_tci_outer) << 8 |
1219                                         ((uint64_t)tx_pkts[1]->vlan_tci) << 32,
1220                         };
1221                         uint64x2_t ext23 = {
1222                                 ((uint32_t)tx_pkts[2]->vlan_tci_outer) << 8 |
1223                                         ((uint64_t)tx_pkts[2]->vlan_tci) << 32,
1224                                 ((uint32_t)tx_pkts[3]->vlan_tci_outer) << 8 |
1225                                         ((uint64_t)tx_pkts[3]->vlan_tci) << 32,
1226                         };
1227
1228                         /* Get ol_flags of the packets. */
1229                         xtmp128 = vzip1q_u64(len_olflags0, len_olflags1);
1230                         ytmp128 = vzip1q_u64(len_olflags2, len_olflags3);
1231
1232                         /* ORR vlan outer/inner values into cmd. */
1233                         sendext01_w1 = vorrq_u64(sendext01_w1, ext01);
1234                         sendext23_w1 = vorrq_u64(sendext23_w1, ext23);
1235
1236                         /* Test for offload enable bits and generate masks. */
1237                         xtmp128 = vorrq_u64(vandq_u64(vtstq_u64(xtmp128, olv),
1238                                                       mlv),
1239                                             vandq_u64(vtstq_u64(xtmp128, olq),
1240                                                       mlq));
1241                         ytmp128 = vorrq_u64(vandq_u64(vtstq_u64(ytmp128, olv),
1242                                                       mlv),
1243                                             vandq_u64(vtstq_u64(ytmp128, olq),
1244                                                       mlq));
1245
1246                         /* Set vlan enable bits into cmd based on mask. */
1247                         sendext01_w1 = vorrq_u64(sendext01_w1, xtmp128);
1248                         sendext23_w1 = vorrq_u64(sendext23_w1, ytmp128);
1249                 }
1250
1251                 if (flags & NIX_TX_OFFLOAD_TSTAMP_F) {
1252                         /* Tx ol_flag for timestam. */
1253                         const uint64x2_t olf = {PKT_TX_IEEE1588_TMST,
1254                                                 PKT_TX_IEEE1588_TMST};
1255                         /* Set send mem alg to SUB. */
1256                         const uint64x2_t alg = {BIT_ULL(59), BIT_ULL(59)};
1257                         /* Increment send mem address by 8. */
1258                         const uint64x2_t addr = {0x8, 0x8};
1259
1260                         xtmp128 = vzip1q_u64(len_olflags0, len_olflags1);
1261                         ytmp128 = vzip1q_u64(len_olflags2, len_olflags3);
1262
1263                         /* Check if timestamp is requested and generate inverted
1264                          * mask as we need not make any changes to default cmd
1265                          * value.
1266                          */
1267                         xtmp128 = vmvnq_u32(vtstq_u64(olf, xtmp128));
1268                         ytmp128 = vmvnq_u32(vtstq_u64(olf, ytmp128));
1269
1270                         /* Change send mem address to an 8 byte offset when
1271                          * TSTMP is disabled.
1272                          */
1273                         sendmem01_w1 = vaddq_u64(sendmem01_w1,
1274                                                  vandq_u64(xtmp128, addr));
1275                         sendmem23_w1 = vaddq_u64(sendmem23_w1,
1276                                                  vandq_u64(ytmp128, addr));
1277                         /* Change send mem alg to SUB when TSTMP is disabled. */
1278                         sendmem01_w0 = vorrq_u64(sendmem01_w0,
1279                                                  vandq_u64(xtmp128, alg));
1280                         sendmem23_w0 = vorrq_u64(sendmem23_w0,
1281                                                  vandq_u64(ytmp128, alg));
1282
1283                         cmd3[0] = vzip1q_u64(sendmem01_w0, sendmem01_w1);
1284                         cmd3[1] = vzip2q_u64(sendmem01_w0, sendmem01_w1);
1285                         cmd3[2] = vzip1q_u64(sendmem23_w0, sendmem23_w1);
1286                         cmd3[3] = vzip2q_u64(sendmem23_w0, sendmem23_w1);
1287                 }
1288
1289                 if (flags & NIX_TX_OFFLOAD_MBUF_NOFF_F) {
1290                         /* Set don't free bit if reference count > 1 */
1291                         xmask01 = vdupq_n_u64(0);
1292                         xmask23 = xmask01;
1293
1294                         /* Move mbufs to iova */
1295                         mbuf0 = (uint64_t *)tx_pkts[0];
1296                         mbuf1 = (uint64_t *)tx_pkts[1];
1297                         mbuf2 = (uint64_t *)tx_pkts[2];
1298                         mbuf3 = (uint64_t *)tx_pkts[3];
1299
1300                         if (cnxk_nix_prefree_seg((struct rte_mbuf *)mbuf0))
1301                                 vsetq_lane_u64(0x80000, xmask01, 0);
1302                         else
1303                                 __mempool_check_cookies(
1304                                         ((struct rte_mbuf *)mbuf0)->pool,
1305                                         (void **)&mbuf0, 1, 0);
1306
1307                         if (cnxk_nix_prefree_seg((struct rte_mbuf *)mbuf1))
1308                                 vsetq_lane_u64(0x80000, xmask01, 1);
1309                         else
1310                                 __mempool_check_cookies(
1311                                         ((struct rte_mbuf *)mbuf1)->pool,
1312                                         (void **)&mbuf1, 1, 0);
1313
1314                         if (cnxk_nix_prefree_seg((struct rte_mbuf *)mbuf2))
1315                                 vsetq_lane_u64(0x80000, xmask23, 0);
1316                         else
1317                                 __mempool_check_cookies(
1318                                         ((struct rte_mbuf *)mbuf2)->pool,
1319                                         (void **)&mbuf2, 1, 0);
1320
1321                         if (cnxk_nix_prefree_seg((struct rte_mbuf *)mbuf3))
1322                                 vsetq_lane_u64(0x80000, xmask23, 1);
1323                         else
1324                                 __mempool_check_cookies(
1325                                         ((struct rte_mbuf *)mbuf3)->pool,
1326                                         (void **)&mbuf3, 1, 0);
1327                         senddesc01_w0 = vorrq_u64(senddesc01_w0, xmask01);
1328                         senddesc23_w0 = vorrq_u64(senddesc23_w0, xmask23);
1329                         /* Ensuring mbuf fields which got updated in
1330                          * cnxk_nix_prefree_seg are written before LMTST.
1331                          */
1332                         rte_io_wmb();
1333                 } else {
1334                         /* Move mbufs to iova */
1335                         mbuf0 = (uint64_t *)tx_pkts[0];
1336                         mbuf1 = (uint64_t *)tx_pkts[1];
1337                         mbuf2 = (uint64_t *)tx_pkts[2];
1338                         mbuf3 = (uint64_t *)tx_pkts[3];
1339
1340                         /* Mark mempool object as "put" since
1341                          * it is freed by NIX
1342                          */
1343                         __mempool_check_cookies(
1344                                 ((struct rte_mbuf *)mbuf0)->pool,
1345                                 (void **)&mbuf0, 1, 0);
1346
1347                         __mempool_check_cookies(
1348                                 ((struct rte_mbuf *)mbuf1)->pool,
1349                                 (void **)&mbuf1, 1, 0);
1350
1351                         __mempool_check_cookies(
1352                                 ((struct rte_mbuf *)mbuf2)->pool,
1353                                 (void **)&mbuf2, 1, 0);
1354
1355                         __mempool_check_cookies(
1356                                 ((struct rte_mbuf *)mbuf3)->pool,
1357                                 (void **)&mbuf3, 1, 0);
1358 #ifdef RTE_LIBRTE_MEMPOOL_DEBUG
1359                         rte_io_wmb();
1360 #endif
1361                 }
1362
1363                 /* Create 4W cmd for 4 mbufs (sendhdr, sgdesc) */
1364                 cmd0[0] = vzip1q_u64(senddesc01_w0, senddesc01_w1);
1365                 cmd0[1] = vzip2q_u64(senddesc01_w0, senddesc01_w1);
1366                 cmd0[2] = vzip1q_u64(senddesc23_w0, senddesc23_w1);
1367                 cmd0[3] = vzip2q_u64(senddesc23_w0, senddesc23_w1);
1368
1369                 cmd1[0] = vzip1q_u64(sgdesc01_w0, sgdesc01_w1);
1370                 cmd1[1] = vzip2q_u64(sgdesc01_w0, sgdesc01_w1);
1371                 cmd1[2] = vzip1q_u64(sgdesc23_w0, sgdesc23_w1);
1372                 cmd1[3] = vzip2q_u64(sgdesc23_w0, sgdesc23_w1);
1373
1374                 if (flags & NIX_TX_NEED_EXT_HDR) {
1375                         cmd2[0] = vzip1q_u64(sendext01_w0, sendext01_w1);
1376                         cmd2[1] = vzip2q_u64(sendext01_w0, sendext01_w1);
1377                         cmd2[2] = vzip1q_u64(sendext23_w0, sendext23_w1);
1378                         cmd2[3] = vzip2q_u64(sendext23_w0, sendext23_w1);
1379                 }
1380
1381                 if (flags & NIX_TX_NEED_EXT_HDR) {
1382                         /* With ext header in the command we can no longer send
1383                          * all 4 packets together since LMTLINE is 128bytes.
1384                          * Split and Tx twice.
1385                          */
1386                         do {
1387                                 if (flags & NIX_TX_OFFLOAD_TSTAMP_F) {
1388                                         vst1q_u64(lmt_addr, cmd0[0]);
1389                                         vst1q_u64(lmt_addr + 2, cmd2[0]);
1390                                         vst1q_u64(lmt_addr + 4, cmd1[0]);
1391                                         vst1q_u64(lmt_addr + 6, cmd3[0]);
1392                                         vst1q_u64(lmt_addr + 8, cmd0[1]);
1393                                         vst1q_u64(lmt_addr + 10, cmd2[1]);
1394                                         vst1q_u64(lmt_addr + 12, cmd1[1]);
1395                                         vst1q_u64(lmt_addr + 14, cmd3[1]);
1396                                 } else {
1397                                         vst1q_u64(lmt_addr, cmd0[0]);
1398                                         vst1q_u64(lmt_addr + 2, cmd2[0]);
1399                                         vst1q_u64(lmt_addr + 4, cmd1[0]);
1400                                         vst1q_u64(lmt_addr + 6, cmd0[1]);
1401                                         vst1q_u64(lmt_addr + 8, cmd2[1]);
1402                                         vst1q_u64(lmt_addr + 10, cmd1[1]);
1403                                 }
1404                                 lmt_status = roc_lmt_submit_ldeor(io_addr);
1405                         } while (lmt_status == 0);
1406
1407                         do {
1408                                 if (flags & NIX_TX_OFFLOAD_TSTAMP_F) {
1409                                         vst1q_u64(lmt_addr, cmd0[2]);
1410                                         vst1q_u64(lmt_addr + 2, cmd2[2]);
1411                                         vst1q_u64(lmt_addr + 4, cmd1[2]);
1412                                         vst1q_u64(lmt_addr + 6, cmd3[2]);
1413                                         vst1q_u64(lmt_addr + 8, cmd0[3]);
1414                                         vst1q_u64(lmt_addr + 10, cmd2[3]);
1415                                         vst1q_u64(lmt_addr + 12, cmd1[3]);
1416                                         vst1q_u64(lmt_addr + 14, cmd3[3]);
1417                                 } else {
1418                                         vst1q_u64(lmt_addr, cmd0[2]);
1419                                         vst1q_u64(lmt_addr + 2, cmd2[2]);
1420                                         vst1q_u64(lmt_addr + 4, cmd1[2]);
1421                                         vst1q_u64(lmt_addr + 6, cmd0[3]);
1422                                         vst1q_u64(lmt_addr + 8, cmd2[3]);
1423                                         vst1q_u64(lmt_addr + 10, cmd1[3]);
1424                                 }
1425                                 lmt_status = roc_lmt_submit_ldeor(io_addr);
1426                         } while (lmt_status == 0);
1427                 } else {
1428                         do {
1429                                 vst1q_u64(lmt_addr, cmd0[0]);
1430                                 vst1q_u64(lmt_addr + 2, cmd1[0]);
1431                                 vst1q_u64(lmt_addr + 4, cmd0[1]);
1432                                 vst1q_u64(lmt_addr + 6, cmd1[1]);
1433                                 vst1q_u64(lmt_addr + 8, cmd0[2]);
1434                                 vst1q_u64(lmt_addr + 10, cmd1[2]);
1435                                 vst1q_u64(lmt_addr + 12, cmd0[3]);
1436                                 vst1q_u64(lmt_addr + 14, cmd1[3]);
1437                                 lmt_status = roc_lmt_submit_ldeor(io_addr);
1438                         } while (lmt_status == 0);
1439                 }
1440                 tx_pkts = tx_pkts + NIX_DESCS_PER_LOOP;
1441         }
1442
1443         if (unlikely(pkts_left))
1444                 pkts += cn9k_nix_xmit_pkts(tx_queue, tx_pkts, pkts_left, cmd,
1445                                            flags);
1446
1447         return pkts;
1448 }
1449
1450 #else
1451 static __rte_always_inline uint16_t
1452 cn9k_nix_xmit_pkts_vector(void *tx_queue, struct rte_mbuf **tx_pkts,
1453                           uint16_t pkts, uint64_t *cmd, const uint16_t flags)
1454 {
1455         RTE_SET_USED(tx_queue);
1456         RTE_SET_USED(tx_pkts);
1457         RTE_SET_USED(pkts);
1458         RTE_SET_USED(cmd);
1459         RTE_SET_USED(flags);
1460         return 0;
1461 }
1462 #endif
1463
1464 #define L3L4CSUM_F   NIX_TX_OFFLOAD_L3_L4_CSUM_F
1465 #define OL3OL4CSUM_F NIX_TX_OFFLOAD_OL3_OL4_CSUM_F
1466 #define VLAN_F       NIX_TX_OFFLOAD_VLAN_QINQ_F
1467 #define NOFF_F       NIX_TX_OFFLOAD_MBUF_NOFF_F
1468 #define TSO_F        NIX_TX_OFFLOAD_TSO_F
1469 #define TSP_F        NIX_TX_OFFLOAD_TSTAMP_F
1470
1471 /* [TSP] [TSO] [NOFF] [VLAN] [OL3OL4CSUM] [L3L4CSUM] */
1472 #define NIX_TX_FASTPATH_MODES                                                  \
1473 T(no_offload,                           0, 0, 0, 0, 0, 0,       4,             \
1474                 NIX_TX_OFFLOAD_NONE)                                           \
1475 T(l3l4csum,                             0, 0, 0, 0, 0, 1,       4,             \
1476                 L3L4CSUM_F)                                                    \
1477 T(ol3ol4csum,                           0, 0, 0, 0, 1, 0,       4,             \
1478                 OL3OL4CSUM_F)                                                  \
1479 T(ol3ol4csum_l3l4csum,                  0, 0, 0, 0, 1, 1,       4,             \
1480                 OL3OL4CSUM_F | L3L4CSUM_F)                                     \
1481 T(vlan,                                 0, 0, 0, 1, 0, 0,       6,             \
1482                 VLAN_F)                                                        \
1483 T(vlan_l3l4csum,                        0, 0, 0, 1, 0, 1,       6,             \
1484                 VLAN_F | L3L4CSUM_F)                                           \
1485 T(vlan_ol3ol4csum,                      0, 0, 0, 1, 1, 0,       6,             \
1486                 VLAN_F | OL3OL4CSUM_F)                                         \
1487 T(vlan_ol3ol4csum_l3l4csum,             0, 0, 0, 1, 1, 1,       6,             \
1488                 VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F)                            \
1489 T(noff,                                 0, 0, 1, 0, 0, 0,       4,             \
1490                 NOFF_F)                                                        \
1491 T(noff_l3l4csum,                        0, 0, 1, 0, 0, 1,       4,             \
1492                 NOFF_F | L3L4CSUM_F)                                           \
1493 T(noff_ol3ol4csum,                      0, 0, 1, 0, 1, 0,       4,             \
1494                 NOFF_F | OL3OL4CSUM_F)                                         \
1495 T(noff_ol3ol4csum_l3l4csum,             0, 0, 1, 0, 1, 1,       4,             \
1496                 NOFF_F | OL3OL4CSUM_F | L3L4CSUM_F)                            \
1497 T(noff_vlan,                            0, 0, 1, 1, 0, 0,       6,             \
1498                 NOFF_F | VLAN_F)                                               \
1499 T(noff_vlan_l3l4csum,                   0, 0, 1, 1, 0, 1,       6,             \
1500                 NOFF_F | VLAN_F | L3L4CSUM_F)                                  \
1501 T(noff_vlan_ol3ol4csum,                 0, 0, 1, 1, 1, 0,       6,             \
1502                 NOFF_F | VLAN_F | OL3OL4CSUM_F)                                \
1503 T(noff_vlan_ol3ol4csum_l3l4csum,        0, 0, 1, 1, 1, 1,       6,             \
1504                 NOFF_F | VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F)                   \
1505 T(tso,                                  0, 1, 0, 0, 0, 0,       6,             \
1506                 TSO_F)                                                         \
1507 T(tso_l3l4csum,                         0, 1, 0, 0, 0, 1,       6,             \
1508                 TSO_F | L3L4CSUM_F)                                            \
1509 T(tso_ol3ol4csum,                       0, 1, 0, 0, 1, 0,       6,             \
1510                 TSO_F | OL3OL4CSUM_F)                                          \
1511 T(tso_ol3ol4csum_l3l4csum,              0, 1, 0, 0, 1, 1,       6,             \
1512                 TSO_F | OL3OL4CSUM_F | L3L4CSUM_F)                             \
1513 T(tso_vlan,                             0, 1, 0, 1, 0, 0,       6,             \
1514                 TSO_F | VLAN_F)                                                \
1515 T(tso_vlan_l3l4csum,                    0, 1, 0, 1, 0, 1,       6,             \
1516                 TSO_F | VLAN_F | L3L4CSUM_F)                                   \
1517 T(tso_vlan_ol3ol4csum,                  0, 1, 0, 1, 1, 0,       6,             \
1518                 TSO_F | VLAN_F | OL3OL4CSUM_F)                                 \
1519 T(tso_vlan_ol3ol4csum_l3l4csum,         0, 1, 0, 1, 1, 1,       6,             \
1520                 TSO_F | VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F)                    \
1521 T(tso_noff,                             0, 1, 1, 0, 0, 0,       6,             \
1522                 TSO_F | NOFF_F)                                                \
1523 T(tso_noff_l3l4csum,                    0, 1, 1, 0, 0, 1,       6,             \
1524                 TSO_F | NOFF_F | L3L4CSUM_F)                                   \
1525 T(tso_noff_ol3ol4csum,                  0, 1, 1, 0, 1, 0,       6,             \
1526                 TSO_F | NOFF_F | OL3OL4CSUM_F)                                 \
1527 T(tso_noff_ol3ol4csum_l3l4csum,         0, 1, 1, 0, 1, 1,       6,             \
1528                 TSO_F | NOFF_F | OL3OL4CSUM_F | L3L4CSUM_F)                    \
1529 T(tso_noff_vlan,                        0, 1, 1, 1, 0, 0,       6,             \
1530                 TSO_F | NOFF_F | VLAN_F)                                       \
1531 T(tso_noff_vlan_l3l4csum,               0, 1, 1, 1, 0, 1,       6,             \
1532                 TSO_F | NOFF_F | VLAN_F | L3L4CSUM_F)                          \
1533 T(tso_noff_vlan_ol3ol4csum,             0, 1, 1, 1, 1, 0,       6,             \
1534                 TSO_F | NOFF_F | VLAN_F | OL3OL4CSUM_F)                        \
1535 T(tso_noff_vlan_ol3ol4csum_l3l4csum,    0, 1, 1, 1, 1, 1,       6,             \
1536                 TSO_F | NOFF_F | VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F)           \
1537 T(ts,                                   1, 0, 0, 0, 0, 0,       8,             \
1538                 TSP_F)                                                         \
1539 T(ts_l3l4csum,                          1, 0, 0, 0, 0, 1,       8,             \
1540                 TSP_F | L3L4CSUM_F)                                            \
1541 T(ts_ol3ol4csum,                        1, 0, 0, 0, 1, 0,       8,             \
1542                 TSP_F | OL3OL4CSUM_F)                                          \
1543 T(ts_ol3ol4csum_l3l4csum,               1, 0, 0, 0, 1, 1,       8,             \
1544                 TSP_F | OL3OL4CSUM_F | L3L4CSUM_F)                             \
1545 T(ts_vlan,                              1, 0, 0, 1, 0, 0,       8,             \
1546                 TSP_F | VLAN_F)                                                \
1547 T(ts_vlan_l3l4csum,                     1, 0, 0, 1, 0, 1,       8,             \
1548                 TSP_F | VLAN_F | L3L4CSUM_F)                                   \
1549 T(ts_vlan_ol3ol4csum,                   1, 0, 0, 1, 1, 0,       8,             \
1550                 TSP_F | VLAN_F | OL3OL4CSUM_F)                                 \
1551 T(ts_vlan_ol3ol4csum_l3l4csum,          1, 0, 0, 1, 1, 1,       8,             \
1552                 TSP_F | VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F)                    \
1553 T(ts_noff,                              1, 0, 1, 0, 0, 0,       8,             \
1554                 TSP_F | NOFF_F)                                                \
1555 T(ts_noff_l3l4csum,                     1, 0, 1, 0, 0, 1,       8,             \
1556                 TSP_F | NOFF_F | L3L4CSUM_F)                                   \
1557 T(ts_noff_ol3ol4csum,                   1, 0, 1, 0, 1, 0,       8,             \
1558                 TSP_F | NOFF_F | OL3OL4CSUM_F)                                 \
1559 T(ts_noff_ol3ol4csum_l3l4csum,          1, 0, 1, 0, 1, 1,       8,             \
1560                 TSP_F | NOFF_F | OL3OL4CSUM_F | L3L4CSUM_F)                    \
1561 T(ts_noff_vlan,                         1, 0, 1, 1, 0, 0,       8,             \
1562                 TSP_F | NOFF_F | VLAN_F)                                       \
1563 T(ts_noff_vlan_l3l4csum,                1, 0, 1, 1, 0, 1,       8,             \
1564                 TSP_F | NOFF_F | VLAN_F | L3L4CSUM_F)                          \
1565 T(ts_noff_vlan_ol3ol4csum,              1, 0, 1, 1, 1, 0,       8,             \
1566                 TSP_F | NOFF_F | VLAN_F | OL3OL4CSUM_F)                        \
1567 T(ts_noff_vlan_ol3ol4csum_l3l4csum,     1, 0, 1, 1, 1, 1,       8,             \
1568                 TSP_F | NOFF_F | VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F)           \
1569 T(ts_tso,                               1, 1, 0, 0, 0, 0,       8,             \
1570                 TSP_F | TSO_F)                                                 \
1571 T(ts_tso_l3l4csum,                      1, 1, 0, 0, 0, 1,       8,             \
1572                 TSP_F | TSO_F | L3L4CSUM_F)                                    \
1573 T(ts_tso_ol3ol4csum,                    1, 1, 0, 0, 1, 0,       8,             \
1574                 TSP_F | TSO_F | OL3OL4CSUM_F)                                  \
1575 T(ts_tso_ol3ol4csum_l3l4csum,           1, 1, 0, 0, 1, 1,       8,             \
1576                 TSP_F | TSO_F | OL3OL4CSUM_F | L3L4CSUM_F)                     \
1577 T(ts_tso_vlan,                          1, 1, 0, 1, 0, 0,       8,             \
1578                 TSP_F | TSO_F | VLAN_F)                                        \
1579 T(ts_tso_vlan_l3l4csum,                 1, 1, 0, 1, 0, 1,       8,             \
1580                 TSP_F | TSO_F | VLAN_F | L3L4CSUM_F)                           \
1581 T(ts_tso_vlan_ol3ol4csum,               1, 1, 0, 1, 1, 0,       8,             \
1582                 TSP_F | TSO_F | VLAN_F | OL3OL4CSUM_F)                         \
1583 T(ts_tso_vlan_ol3ol4csum_l3l4csum,      1, 1, 0, 1, 1, 1,       8,             \
1584                 TSP_F | TSO_F | VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F)            \
1585 T(ts_tso_noff,                          1, 1, 1, 0, 0, 0,       8,             \
1586                 TSP_F | TSO_F | NOFF_F)                                        \
1587 T(ts_tso_noff_l3l4csum,                 1, 1, 1, 0, 0, 1,       8,             \
1588                 TSP_F | TSO_F | NOFF_F | L3L4CSUM_F)                           \
1589 T(ts_tso_noff_ol3ol4csum,               1, 1, 1, 0, 1, 0,       8,             \
1590                 TSP_F | TSO_F | NOFF_F | OL3OL4CSUM_F)                         \
1591 T(ts_tso_noff_ol3ol4csum_l3l4csum,      1, 1, 1, 0, 1, 1,       8,             \
1592                 TSP_F | TSO_F | NOFF_F | OL3OL4CSUM_F | L3L4CSUM_F)            \
1593 T(ts_tso_noff_vlan,                     1, 1, 1, 1, 0, 0,       8,             \
1594                 TSP_F | TSO_F | NOFF_F | VLAN_F)                               \
1595 T(ts_tso_noff_vlan_l3l4csum,            1, 1, 1, 1, 0, 1,       8,             \
1596                 TSP_F | TSO_F | NOFF_F | VLAN_F | L3L4CSUM_F)                  \
1597 T(ts_tso_noff_vlan_ol3ol4csum,          1, 1, 1, 1, 1, 0,       8,             \
1598                 TSP_F | TSO_F | NOFF_F | VLAN_F | OL3OL4CSUM_F)                \
1599 T(ts_tso_noff_vlan_ol3ol4csum_l3l4csum, 1, 1, 1, 1, 1, 1,       8,             \
1600                 TSP_F | TSO_F | NOFF_F | VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F)
1601
1602 #define T(name, f5, f4, f3, f2, f1, f0, sz, flags)                             \
1603         uint16_t __rte_noinline __rte_hot cn9k_nix_xmit_pkts_##name(           \
1604                 void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t pkts);     \
1605                                                                                \
1606         uint16_t __rte_noinline __rte_hot cn9k_nix_xmit_pkts_mseg_##name(      \
1607                 void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t pkts);     \
1608                                                                                \
1609         uint16_t __rte_noinline __rte_hot cn9k_nix_xmit_pkts_vec_##name(       \
1610                 void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t pkts);
1611
1612 NIX_TX_FASTPATH_MODES
1613 #undef T
1614
1615 #endif /* __CN9K_TX_H__ */