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From: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
To: dev@dpdk.org
Cc: thomas@monjalon.net, matan@nvidia.com, akozyrev@nvidia.com,
rasland@nvidia.com, orika@nvidia.com
Date: Fri, 23 Oct 2020 09:46:53 +0000
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<1603446415-20853-1-git-send-email-viacheslavo@nvidia.com>
Subject: [dpdk-dev] [PATCH v2 3/5] net/mlx5: update Rx datapath to support
split
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Only the regular rx_burst routine is updated to support split,
because the vectorized ones does not support scatter and MPRQ
does not support split at all.
Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
drivers/net/mlx5/mlx5_rxq.c | 11 +++++------
drivers/net/mlx5/mlx5_rxtx.c | 3 ++-
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index dc79498..e82d14f 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -210,9 +210,10 @@
/* Iterate on segments. */
for (i = 0; (i != elts_n); ++i) {
+ struct mlx5_eth_rxseg *seg = &rxq_ctrl->rxq.rxseg[i % sges_n];
struct rte_mbuf *buf;
- buf = rte_pktmbuf_alloc(rxq_ctrl->rxq.mp);
+ buf = rte_pktmbuf_alloc(seg->mp);
if (buf == NULL) {
DRV_LOG(ERR, "port %u empty mbuf pool",
PORT_ID(rxq_ctrl->priv));
@@ -225,12 +226,10 @@
MLX5_ASSERT(rte_pktmbuf_data_len(buf) == 0);
MLX5_ASSERT(rte_pktmbuf_pkt_len(buf) == 0);
MLX5_ASSERT(!buf->next);
- /* Only the first segment keeps headroom. */
- if (i % sges_n)
- SET_DATA_OFF(buf, 0);
+ SET_DATA_OFF(buf, seg->offset);
PORT(buf) = rxq_ctrl->rxq.port_id;
- DATA_LEN(buf) = rte_pktmbuf_tailroom(buf);
- PKT_LEN(buf) = DATA_LEN(buf);
+ DATA_LEN(buf) = seg->length;
+ PKT_LEN(buf) = seg->length;
NB_SEGS(buf) = 1;
(*rxq_ctrl->rxq.elts)[i] = buf;
}
diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index b530ff4..dd84249 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -1334,7 +1334,8 @@ enum mlx5_txcmp_code {
rte_prefetch0(seg);
rte_prefetch0(cqe);
rte_prefetch0(wqe);
- rep = rte_mbuf_raw_alloc(rxq->mp);
+ /* Allocate the buf from the same pool. */
+ rep = rte_mbuf_raw_alloc(seg->pool);
if (unlikely(rep == NULL)) {
++rxq->stats.rx_nombuf;
if (!pkt) {
--
1.8.3.1