From: Ajit Khaparde <ajit.khaparde@broadcom.com>
To: dev@dpdk.org
Cc: Lance Richardson <lance.richardson@broadcom.com>
Subject: [dpdk-dev] [PATCH 2/2] net/bnxt: cap max Rx rings for Thor
Date: Mon, 19 Apr 2021 12:28:38 -0700 [thread overview]
Message-ID: <20210419192838.45708-2-ajit.khaparde@broadcom.com> (raw)
In-Reply-To: <20210419192838.45708-1-ajit.khaparde@broadcom.com>
[-- Attachment #1: Type: text/plain, Size: 2301 bytes --]
For Thor devices, RSS table can only accommodate 512 Rx queues.
When RSS is enabled, Cap the max Rx rings to 512.
For non-RSS case, the number will be limited by number of VNICs.
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Lance Richardson <lance.richardson@broadcom.com>
---
drivers/net/bnxt/bnxt.h | 13 +++++++++++++
drivers/net/bnxt/bnxt_ethdev.c | 7 ++++---
2 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index 05f8804274..263ea86590 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -844,6 +844,7 @@ struct bnxt {
static
inline uint16_t bnxt_max_rings(struct bnxt *bp)
{
+ struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
uint16_t max_tx_rings = bp->max_tx_rings;
uint16_t max_rx_rings = bp->max_rx_rings;
uint16_t max_cp_rings = bp->max_cp_rings;
@@ -861,6 +862,18 @@ inline uint16_t bnxt_max_rings(struct bnxt *bp)
bp->max_stat_ctx / 2U);
}
+ if (BNXT_CHIP_P5(bp)) {
+ /* RSS table size in Thor is 512.
+ * Cap max Rx rings to the same value for RSS.
+ * For non-RSS case cap it to the max VNIC count.
+ */
+ if(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
+ max_rx_rings = RTE_MIN(max_rx_rings,
+ BNXT_RSS_TBL_SIZE_P5);
+ else
+ max_rx_rings = RTE_MIN(max_rx_rings, bp->max_vnics);
+ }
+
max_tx_rings = RTE_MIN(max_tx_rings, max_rx_rings);
if (max_cp_rings > BNXT_NUM_ASYNC_CPR(bp))
max_cp_rings -= BNXT_NUM_ASYNC_CPR(bp);
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index dc3b04110f..9da817f487 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -422,12 +422,13 @@ static int bnxt_setup_one_vnic(struct bnxt *bp, uint16_t vnic_id)
if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS) {
int j, nr_ctxs = bnxt_rss_ctxts(bp);
+ /* RSS table size in Thor is 512.
+ * Cap max Rx rings to same value
+ */
if (bp->rx_nr_rings > BNXT_RSS_TBL_SIZE_P5) {
PMD_DRV_LOG(ERR, "RxQ cnt %d > reta_size %d\n",
bp->rx_nr_rings, BNXT_RSS_TBL_SIZE_P5);
- PMD_DRV_LOG(ERR,
- "Only queues 0-%d will be in RSS table\n",
- BNXT_RSS_TBL_SIZE_P5 - 1);
+ goto err_out;
}
rc = 0;
--
2.21.1 (Apple Git-122.3)
next prev parent reply other threads:[~2021-04-19 19:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-19 19:28 [dpdk-dev] [PATCH 1/2] net/bnxt: fix resource cleanup Ajit Khaparde
2021-04-19 19:28 ` Ajit Khaparde [this message]
2021-04-19 23:56 ` [dpdk-dev] [PATCH 2/2] net/bnxt: cap max Rx rings for Thor Ajit Khaparde
2021-04-19 23:56 ` [dpdk-dev] [PATCH 1/2] net/bnxt: fix resource cleanup Ajit Khaparde
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