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From: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
To: dev@dpdk.org
Cc: thomasm@monjalon.net, stephen@networkplumber.org, ferruh.yigit@intel.com,
olivier.matz@6wind.com, jerinjacobk@gmail.com,
maxime.coquelin@redhat.com, david.marchand@redhat.com,
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Date: Wed, 7 Oct 2020 15:06:55 +0000
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<1602083215-22921-1-git-send-email-viacheslavo@nvidia.com>
Subject: [dpdk-dev] [PATCH v2 9/9] 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 44be6df..5a035cc 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 rte_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 101555e..ad4da09 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -1430,7 +1430,8 @@ 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