[RFC v2 3/3] net/idpf: adjust RSS LUT to exclude hairpin queue
Junfeng Guo
junfeng.guo at intel.com
Mon Sep 26 10:42:48 CEST 2022
RSS should direct traffic only to the normal data Rx queues, so when
hairpin queue configured, RSS LUT should be adjusted to exclude
the hairpin queue.
Signed-off-by: Xiao Wang <xiao.w.wang at intel.com>
Signed-off-by: Junfeng Guo <junfeng.guo at intel.com>
---
drivers/net/idpf/idpf_ethdev.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/net/idpf/idpf_ethdev.c b/drivers/net/idpf/idpf_ethdev.c
index 41e6391d8b..a30b8df778 100644
--- a/drivers/net/idpf/idpf_ethdev.c
+++ b/drivers/net/idpf/idpf_ethdev.c
@@ -624,9 +624,28 @@ idpf_config_rx_queues_irqs(struct rte_eth_dev *dev)
return -1;
}
+static int
+idpf_config_rss_lut(struct idpf_vport *vport, uint16_t nb_q)
+{
+ uint16_t lut_size = vport->rss_lut_size;
+ uint16_t i;
+ int ret;
+
+ for (i = 0; i < lut_size; i++)
+ vport->rss_lut[i] = i % nb_q;
+
+ ret = idpf_set_rss_lut(vport);
+ if (ret)
+ PMD_INIT_LOG(ERR, "Failed to configure RSS lut");
+
+ return ret;
+}
+
static int
idpf_start_queues(struct rte_eth_dev *dev)
{
+ struct idpf_vport *vport = (struct idpf_vport *)dev->data->dev_private;
+ uint16_t nb_rxq = dev->data->nb_rx_queues;
struct idpf_rx_queue *rxq;
struct idpf_tx_queue *txq;
int err = 0;
@@ -704,6 +723,11 @@ idpf_start_queues(struct rte_eth_dev *dev)
}
}
+ /* RSS only to the data queues */
+ rxq = dev->data->rx_queues[nb_rxq - 1];
+ if (nb_rxq > 1 && rxq && rxq->hairpin_q)
+ err = idpf_config_rss_lut(vport, nb_rxq - 1);
+
return err;
}
--
2.25.1
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