net/mlx5: zero LRO mbuf headroom

[dpdk.git] / drivers / net / mlx5 / mlx5_rxtx.c

diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index fc9090e..007df8f 100644 (file)
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -1540,6 +1540,7 @@ mlx5_rx_burst_mprq(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
        unsigned int i = 0;
        uint32_t rq_ci = rxq->rq_ci;
        uint16_t consumed_strd = rxq->consumed_strd;
+       uint16_t headroom_sz = rxq->strd_headroom_en * RTE_PKTMBUF_HEADROOM;
        struct mlx5_mprq_buf *buf = (*rxq->mprq_bufs)[rq_ci & wq_mask];
 
        while (i < pkts_n) {
@@ -1650,7 +1651,7 @@ mlx5_rx_burst_mprq(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
                        rte_atomic16_add_return(&buf->refcnt, 1);
                        assert((uint16_t)rte_atomic16_read(&buf->refcnt) <=
                               strd_n + 1);
-                       buf_addr = RTE_PTR_SUB(addr, RTE_PKTMBUF_HEADROOM);
+                       buf_addr = RTE_PTR_SUB(addr, headroom_sz);
                        /*
                         * MLX5 device doesn't use iova but it is necessary in a
                         * case where the Rx packet is transmitted via a
@@ -1668,7 +1669,8 @@ mlx5_rx_burst_mprq(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
                         */
                        rte_pktmbuf_attach_extbuf(pkt, buf_addr, buf_iova,
                                                  buf_len, shinfo);
-                       rte_pktmbuf_reset_headroom(pkt);
+                       /* Set mbuf head-room. */
+                       pkt->data_off = headroom_sz;
                        assert(pkt->ol_flags == EXT_ATTACHED_MBUF);
                        /*
                         * Prevent potential overflow due to MTU change through