net/iavf: fix VLAN extraction in AVX512 path
[dpdk.git] / drivers / net / iavf / iavf_rxtx_vec_sse.c
index 5a03900..ef1f17e 100644 (file)
@@ -3,7 +3,7 @@
  */
 
 #include <stdint.h>
-#include <rte_ethdev_driver.h>
+#include <ethdev_driver.h>
 #include <rte_malloc.h>
 
 #include "iavf.h"
@@ -110,16 +110,16 @@ desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
        const __m128i cksum_mask = _mm_set_epi32(
                        PKT_RX_IP_CKSUM_GOOD | PKT_RX_IP_CKSUM_BAD |
                        PKT_RX_L4_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD |
-                       PKT_RX_EIP_CKSUM_BAD,
+                       PKT_RX_OUTER_IP_CKSUM_BAD,
                        PKT_RX_IP_CKSUM_GOOD | PKT_RX_IP_CKSUM_BAD |
                        PKT_RX_L4_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD |
-                       PKT_RX_EIP_CKSUM_BAD,
+                       PKT_RX_OUTER_IP_CKSUM_BAD,
                        PKT_RX_IP_CKSUM_GOOD | PKT_RX_IP_CKSUM_BAD |
                        PKT_RX_L4_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD |
-                       PKT_RX_EIP_CKSUM_BAD,
+                       PKT_RX_OUTER_IP_CKSUM_BAD,
                        PKT_RX_IP_CKSUM_GOOD | PKT_RX_IP_CKSUM_BAD |
                        PKT_RX_L4_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD |
-                       PKT_RX_EIP_CKSUM_BAD);
+                       PKT_RX_OUTER_IP_CKSUM_BAD);
 
        /* map rss and vlan type to rss hash and vlan flag */
        const __m128i vlan_flags = _mm_set_epi8(0, 0, 0, 0,
@@ -134,12 +134,12 @@ desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
 
        const __m128i l3_l4e_flags = _mm_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
                        /* shift right 1 bit to make sure it not exceed 255 */
-                       (PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD |
+                       (PKT_RX_OUTER_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD |
                         PKT_RX_IP_CKSUM_BAD) >> 1,
-                       (PKT_RX_IP_CKSUM_GOOD | PKT_RX_EIP_CKSUM_BAD |
+                       (PKT_RX_IP_CKSUM_GOOD | PKT_RX_OUTER_IP_CKSUM_BAD |
                         PKT_RX_L4_CKSUM_BAD) >> 1,
-                       (PKT_RX_EIP_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD) >> 1,
-                       (PKT_RX_IP_CKSUM_GOOD | PKT_RX_EIP_CKSUM_BAD) >> 1,
+                       (PKT_RX_OUTER_IP_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD) >> 1,
+                       (PKT_RX_IP_CKSUM_GOOD | PKT_RX_OUTER_IP_CKSUM_BAD) >> 1,
                        (PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD) >> 1,
                        (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD) >> 1,
                        PKT_RX_IP_CKSUM_BAD >> 1,
@@ -189,6 +189,25 @@ desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
        _mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
 }
 
+static inline __m128i
+flex_rxd_to_fdir_flags_vec(const __m128i fdir_id0_3)
+{
+#define FDID_MIS_MAGIC 0xFFFFFFFF
+       RTE_BUILD_BUG_ON(PKT_RX_FDIR != (1 << 2));
+       RTE_BUILD_BUG_ON(PKT_RX_FDIR_ID != (1 << 13));
+       const __m128i pkt_fdir_bit = _mm_set1_epi32(PKT_RX_FDIR |
+                       PKT_RX_FDIR_ID);
+       /* desc->flow_id field == 0xFFFFFFFF means fdir mismatch */
+       const __m128i fdir_mis_mask = _mm_set1_epi32(FDID_MIS_MAGIC);
+       __m128i fdir_mask = _mm_cmpeq_epi32(fdir_id0_3,
+                       fdir_mis_mask);
+       /* this XOR op results to bit-reverse the fdir_mask */
+       fdir_mask = _mm_xor_si128(fdir_mask, fdir_mis_mask);
+       const __m128i fdir_flags = _mm_and_si128(fdir_mask, pkt_fdir_bit);
+
+       return fdir_flags;
+}
+
 static inline void
 flex_desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
                       struct rte_mbuf **rx_pkts)
@@ -208,29 +227,29 @@ flex_desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
 
        const __m128i cksum_mask = _mm_set_epi32(PKT_RX_IP_CKSUM_MASK |
                                                 PKT_RX_L4_CKSUM_MASK |
-                                                PKT_RX_EIP_CKSUM_BAD,
+                                                PKT_RX_OUTER_IP_CKSUM_BAD,
                                                 PKT_RX_IP_CKSUM_MASK |
                                                 PKT_RX_L4_CKSUM_MASK |
-                                                PKT_RX_EIP_CKSUM_BAD,
+                                                PKT_RX_OUTER_IP_CKSUM_BAD,
                                                 PKT_RX_IP_CKSUM_MASK |
                                                 PKT_RX_L4_CKSUM_MASK |
-                                                PKT_RX_EIP_CKSUM_BAD,
+                                                PKT_RX_OUTER_IP_CKSUM_BAD,
                                                 PKT_RX_IP_CKSUM_MASK |
                                                 PKT_RX_L4_CKSUM_MASK |
-                                                PKT_RX_EIP_CKSUM_BAD);
+                                                PKT_RX_OUTER_IP_CKSUM_BAD);
 
        /* map the checksum, rss and vlan fields to the checksum, rss
         * and vlan flag
         */
        const __m128i cksum_flags = _mm_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
                        /* shift right 1 bit to make sure it not exceed 255 */
-                       (PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD |
+                       (PKT_RX_OUTER_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD |
                         PKT_RX_IP_CKSUM_BAD) >> 1,
-                       (PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD |
+                       (PKT_RX_OUTER_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD |
                         PKT_RX_IP_CKSUM_GOOD) >> 1,
-                       (PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_GOOD |
+                       (PKT_RX_OUTER_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_GOOD |
                         PKT_RX_IP_CKSUM_BAD) >> 1,
-                       (PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_GOOD |
+                       (PKT_RX_OUTER_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_GOOD |
                         PKT_RX_IP_CKSUM_GOOD) >> 1,
                        (PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD) >> 1,
                        (PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_GOOD) >> 1,
@@ -248,7 +267,7 @@ flex_desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
        flags = _mm_unpackhi_epi32(descs[0], descs[1]);
        tmp_desc = _mm_unpackhi_epi32(descs[2], descs[3]);
        tmp_desc = _mm_unpacklo_epi64(flags, tmp_desc);
-       tmp_desc = _mm_and_si128(flags, desc_mask);
+       tmp_desc = _mm_and_si128(tmp_desc, desc_mask);
 
        /* checksum flags */
        tmp_desc = _mm_srli_epi32(tmp_desc, 4);
@@ -267,6 +286,36 @@ flex_desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
        /* merge the flags */
        flags = _mm_or_si128(flags, rss_vlan);
 
+       if (rxq->fdir_enabled) {
+               const __m128i fdir_id0_1 =
+                       _mm_unpackhi_epi32(descs[0], descs[1]);
+
+               const __m128i fdir_id2_3 =
+                       _mm_unpackhi_epi32(descs[2], descs[3]);
+
+               const __m128i fdir_id0_3 =
+                       _mm_unpackhi_epi64(fdir_id0_1, fdir_id2_3);
+
+               const __m128i fdir_flags =
+                       flex_rxd_to_fdir_flags_vec(fdir_id0_3);
+
+               /* merge with fdir_flags */
+               flags = _mm_or_si128(flags, fdir_flags);
+
+               /* write fdir_id to mbuf */
+               rx_pkts[0]->hash.fdir.hi =
+                       _mm_extract_epi32(fdir_id0_3, 0);
+
+               rx_pkts[1]->hash.fdir.hi =
+                       _mm_extract_epi32(fdir_id0_3, 1);
+
+               rx_pkts[2]->hash.fdir.hi =
+                       _mm_extract_epi32(fdir_id0_3, 2);
+
+               rx_pkts[3]->hash.fdir.hi =
+                       _mm_extract_epi32(fdir_id0_3, 3);
+       } /* if() on fdir_enabled */
+
        /**
         * At this point, we have the 4 sets of flags in the low 16-bits
         * of each 32-bit value in flags.
@@ -330,10 +379,12 @@ flex_desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts,
        rx_pkts[3]->packet_type = type_table[_mm_extract_epi16(ptype_all, 7)];
 }
 
-/* Notice:
+/**
+ * vPMD raw receive routine, only accept(nb_pkts >= IAVF_VPMD_DESCS_PER_LOOP)
+ *
+ * Notice:
  * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > IAVF_VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
- *   numbers of DD bits
+ * - floor align nb_pkts to a IAVF_VPMD_DESCS_PER_LOOP power-of-two
  */
 static inline uint16_t
 _recv_raw_pkts_vec(struct iavf_rx_queue *rxq, struct rte_mbuf **rx_pkts,
@@ -364,9 +415,6 @@ _recv_raw_pkts_vec(struct iavf_rx_queue *rxq, struct rte_mbuf **rx_pkts,
                        offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
        __m128i dd_check, eop_check;
 
-       /* nb_pkts shall be less equal than IAVF_VPMD_RX_MAX_BURST */
-       nb_pkts = RTE_MIN(nb_pkts, IAVF_VPMD_RX_MAX_BURST);
-
        /* nb_pkts has to be floor-aligned to IAVF_VPMD_DESCS_PER_LOOP */
        nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, IAVF_VPMD_DESCS_PER_LOOP);
 
@@ -578,10 +626,13 @@ _recv_raw_pkts_vec(struct iavf_rx_queue *rxq, struct rte_mbuf **rx_pkts,
        return nb_pkts_recd;
 }
 
-/* Notice:
+/**
+ * vPMD raw receive routine for flex RxD,
+ * only accept(nb_pkts >= IAVF_VPMD_DESCS_PER_LOOP)
+ *
+ * Notice:
  * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > IAVF_VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
- *   numbers of DD bits
+ * - floor align nb_pkts to a IAVF_VPMD_DESCS_PER_LOOP power-of-two
  */
 static inline uint16_t
 _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
@@ -604,7 +655,8 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
        const __m128i zero = _mm_setzero_si128();
        /* mask to shuffle from desc. to mbuf */
        const __m128i shuf_msk = _mm_set_epi8
-                       (15, 14, 13, 12,  /* octet 12~15, 32 bits rss */
+                       (0xFF, 0xFF,
+                        0xFF, 0xFF,  /* rss hash parsed separately */
                         11, 10,      /* octet 10~11, 16 bits vlan_macip */
                         5, 4,        /* octet 4~5, 16 bits data_len */
                         0xFF, 0xFF,  /* skip high 16 bits pkt_len, zero out */
@@ -638,9 +690,6 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
        const __m128i eop_check = _mm_set_epi64x(0x0000000200000002LL,
                                                 0x0000000200000002LL);
 
-       /* nb_pkts shall be less equal than IAVF_VPMD_RX_MAX_BURST */
-       nb_pkts = RTE_MIN(nb_pkts, IAVF_VPMD_RX_MAX_BURST);
-
        /* nb_pkts has to be floor-aligned to IAVF_VPMD_DESCS_PER_LOOP */
        nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, IAVF_VPMD_DESCS_PER_LOOP);
 
@@ -695,7 +744,7 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
             pos += IAVF_VPMD_DESCS_PER_LOOP,
             rxdp += IAVF_VPMD_DESCS_PER_LOOP) {
                __m128i descs[IAVF_VPMD_DESCS_PER_LOOP];
-               __m128i pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
+               __m128i pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3;
                __m128i staterr, sterr_tmp1, sterr_tmp2;
                /* 2 64 bit or 4 32 bit mbuf pointers in one XMM reg. */
                __m128i mbp1;
@@ -741,8 +790,12 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
                rte_compiler_barrier();
 
                /* D.1 pkt 3,4 convert format from desc to pktmbuf */
-               pkt_mb4 = _mm_shuffle_epi8(descs[3], shuf_msk);
-               pkt_mb3 = _mm_shuffle_epi8(descs[2], shuf_msk);
+               pkt_mb3 = _mm_shuffle_epi8(descs[3], shuf_msk);
+               pkt_mb2 = _mm_shuffle_epi8(descs[2], shuf_msk);
+
+               /* D.1 pkt 1,2 convert format from desc to pktmbuf */
+               pkt_mb1 = _mm_shuffle_epi8(descs[1], shuf_msk);
+               pkt_mb0 = _mm_shuffle_epi8(descs[0], shuf_msk);
 
                /* C.1 4=>2 filter staterr info only */
                sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
@@ -752,12 +805,68 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
                flex_desc_to_olflags_v(rxq, descs, &rx_pkts[pos]);
 
                /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
-               pkt_mb4 = _mm_add_epi16(pkt_mb4, crc_adjust);
                pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
+               pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
 
-               /* D.1 pkt 1,2 convert format from desc to pktmbuf */
-               pkt_mb2 = _mm_shuffle_epi8(descs[1], shuf_msk);
-               pkt_mb1 = _mm_shuffle_epi8(descs[0], shuf_msk);
+               /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
+               pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
+               pkt_mb0 = _mm_add_epi16(pkt_mb0, crc_adjust);
+
+#ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
+               /**
+                * needs to load 2nd 16B of each desc for RSS hash parsing,
+                * will cause performance drop to get into this context.
+                */
+               if (rxq->vsi->adapter->eth_dev->data->dev_conf.rxmode.offloads &
+                               DEV_RX_OFFLOAD_RSS_HASH) {
+                       /* load bottom half of every 32B desc */
+                       const __m128i raw_desc_bh3 =
+                               _mm_load_si128
+                                       ((void *)(&rxdp[3].wb.status_error1));
+                       rte_compiler_barrier();
+                       const __m128i raw_desc_bh2 =
+                               _mm_load_si128
+                                       ((void *)(&rxdp[2].wb.status_error1));
+                       rte_compiler_barrier();
+                       const __m128i raw_desc_bh1 =
+                               _mm_load_si128
+                                       ((void *)(&rxdp[1].wb.status_error1));
+                       rte_compiler_barrier();
+                       const __m128i raw_desc_bh0 =
+                               _mm_load_si128
+                                       ((void *)(&rxdp[0].wb.status_error1));
+
+                       /**
+                        * to shift the 32b RSS hash value to the
+                        * highest 32b of each 128b before mask
+                        */
+                       __m128i rss_hash3 =
+                               _mm_slli_epi64(raw_desc_bh3, 32);
+                       __m128i rss_hash2 =
+                               _mm_slli_epi64(raw_desc_bh2, 32);
+                       __m128i rss_hash1 =
+                               _mm_slli_epi64(raw_desc_bh1, 32);
+                       __m128i rss_hash0 =
+                               _mm_slli_epi64(raw_desc_bh0, 32);
+
+                       __m128i rss_hash_msk =
+                               _mm_set_epi32(0xFFFFFFFF, 0, 0, 0);
+
+                       rss_hash3 = _mm_and_si128
+                                       (rss_hash3, rss_hash_msk);
+                       rss_hash2 = _mm_and_si128
+                                       (rss_hash2, rss_hash_msk);
+                       rss_hash1 = _mm_and_si128
+                                       (rss_hash1, rss_hash_msk);
+                       rss_hash0 = _mm_and_si128
+                                       (rss_hash0, rss_hash_msk);
+
+                       pkt_mb3 = _mm_or_si128(pkt_mb3, rss_hash3);
+                       pkt_mb2 = _mm_or_si128(pkt_mb2, rss_hash2);
+                       pkt_mb1 = _mm_or_si128(pkt_mb1, rss_hash1);
+                       pkt_mb0 = _mm_or_si128(pkt_mb0, rss_hash0);
+               } /* if() on RSS hash parsing */
+#endif
 
                /* C.2 get 4 pkts staterr value  */
                staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
@@ -765,14 +874,10 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
                /* D.3 copy final 3,4 data to rx_pkts */
                _mm_storeu_si128
                        ((void *)&rx_pkts[pos + 3]->rx_descriptor_fields1,
-                        pkt_mb4);
+                        pkt_mb3);
                _mm_storeu_si128
                        ((void *)&rx_pkts[pos + 2]->rx_descriptor_fields1,
-                        pkt_mb3);
-
-               /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
-               pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
-               pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
+                        pkt_mb2);
 
                /* C* extract and record EOP bit */
                if (split_packet) {
@@ -796,9 +901,9 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
                /* D.3 copy final 1,2 data to rx_pkts */
                _mm_storeu_si128
                        ((void *)&rx_pkts[pos + 1]->rx_descriptor_fields1,
-                        pkt_mb2);
+                        pkt_mb1);
                _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
-                                pkt_mb1);
+                                pkt_mb0);
                flex_desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
                /* C.4 calc available number of desc */
                var = __builtin_popcountll(_mm_cvtsi128_si64(staterr));
@@ -839,15 +944,15 @@ iavf_recv_pkts_vec_flex_rxd(void *rx_queue, struct rte_mbuf **rx_pkts,
        return _recv_raw_pkts_vec_flex_rxd(rx_queue, rx_pkts, nb_pkts, NULL);
 }
 
-/* vPMD receive routine that reassembles scattered packets
+/**
+ * vPMD receive routine that reassembles single burst of 32 scattered packets
+ *
  * Notice:
  * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
- *   numbers of DD bits
  */
-uint16_t
-iavf_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
-                           uint16_t nb_pkts)
+static uint16_t
+iavf_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
+                             uint16_t nb_pkts)
 {
        struct iavf_rx_queue *rxq = rx_queue;
        uint8_t split_flags[IAVF_VPMD_RX_MAX_BURST] = {0};
@@ -880,16 +985,43 @@ iavf_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
                &split_flags[i]);
 }
 
-/* vPMD receive routine that reassembles scattered packets for flex RxD
+/**
+ * vPMD receive routine that reassembles scattered packets.
+ */
+uint16_t
+iavf_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
+                            uint16_t nb_pkts)
+{
+       uint16_t retval = 0;
+
+       while (nb_pkts > IAVF_VPMD_RX_MAX_BURST) {
+               uint16_t burst;
+
+               burst = iavf_recv_scattered_burst_vec(rx_queue,
+                                                     rx_pkts + retval,
+                                                     IAVF_VPMD_RX_MAX_BURST);
+               retval += burst;
+               nb_pkts -= burst;
+               if (burst < IAVF_VPMD_RX_MAX_BURST)
+                       return retval;
+       }
+
+       return retval + iavf_recv_scattered_burst_vec(rx_queue,
+                                                     rx_pkts + retval,
+                                                     nb_pkts);
+}
+
+/**
+ * vPMD receive routine that reassembles single burst of 32 scattered packets
+ * for flex RxD
+ *
  * Notice:
  * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
- * - nb_pkts > VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
- *   numbers of DD bits
  */
-uint16_t
-iavf_recv_scattered_pkts_vec_flex_rxd(void *rx_queue,
-                                     struct rte_mbuf **rx_pkts,
-                                     uint16_t nb_pkts)
+static uint16_t
+iavf_recv_scattered_burst_vec_flex_rxd(void *rx_queue,
+                                      struct rte_mbuf **rx_pkts,
+                                      uint16_t nb_pkts)
 {
        struct iavf_rx_queue *rxq = rx_queue;
        uint8_t split_flags[IAVF_VPMD_RX_MAX_BURST] = {0};
@@ -922,6 +1054,33 @@ iavf_recv_scattered_pkts_vec_flex_rxd(void *rx_queue,
                &split_flags[i]);
 }
 
+/**
+ * vPMD receive routine that reassembles scattered packets for flex RxD
+ */
+uint16_t
+iavf_recv_scattered_pkts_vec_flex_rxd(void *rx_queue,
+                                     struct rte_mbuf **rx_pkts,
+                                     uint16_t nb_pkts)
+{
+       uint16_t retval = 0;
+
+       while (nb_pkts > IAVF_VPMD_RX_MAX_BURST) {
+               uint16_t burst;
+
+               burst = iavf_recv_scattered_burst_vec_flex_rxd(rx_queue,
+                                               rx_pkts + retval,
+                                               IAVF_VPMD_RX_MAX_BURST);
+               retval += burst;
+               nb_pkts -= burst;
+               if (burst < IAVF_VPMD_RX_MAX_BURST)
+                       return retval;
+       }
+
+       return retval + iavf_recv_scattered_burst_vec_flex_rxd(rx_queue,
+                                                     rx_pkts + retval,
+                                                     nb_pkts);
+}
+
 static inline void
 vtx1(volatile struct iavf_tx_desc *txdp, struct rte_mbuf *pkt, uint64_t flags)
 {