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net/bnxt: fix ring count calculation

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Fix ring count calculation for Thor. VNIC count does not have a
direct bearing on the number of rings that can be used.

Fixes: fe8dd26f86 ("net/bnxt: cap max Rx rings for Thor")

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
This commit is contained in:
Ajit Khaparde 2021-04-30 13:14:13 -07:00
parent 0797fcb004
commit a49844ffa3
1 changed files with 6 additions and 12 deletions
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18
drivers/net/bnxt/bnxt.h
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@ -837,7 +837,6 @@ 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;
@ -855,17 +854,12 @@ 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);
}
/*
* RSS table size in Thor is 512.
* Cap max Rx rings to the same value for RSS.
*/
if (BNXT_CHIP_P5(bp))
max_rx_rings = RTE_MIN(max_rx_rings, BNXT_RSS_TBL_SIZE_P5);
max_tx_rings = RTE_MIN(max_tx_rings, max_rx_rings);
if (max_cp_rings > BNXT_NUM_ASYNC_CPR(bp))