[PATCH] net/bnxt: limit max_vnics for CoS classification

[Ajit Khaparde]

On Mon, Mar 13, 2023 at 1:01 PM Dave Johnson <davejo at cisco.com> wrote:
>
> When using CoS classification the number of vnics is capped
> to avoid unnecessary memzone allocations.
>
> Signed-off-by: Dave Johnson <davejo at cisco.com>
Acked-by: Ajit Khaparde <ajit.khaparde at broadcom.com>

Patch merged to dpdk-next-net-brcm. Thanks

> ---
>  .mailmap                     |  1 +
>  drivers/net/bnxt/bnxt.h      |  1 +
>  drivers/net/bnxt/bnxt_hwrm.c | 10 ++++++++--
>  3 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/.mailmap b/.mailmap
> index 4018f0fc47..ae52428557 100644
> --- a/.mailmap
> +++ b/.mailmap
> @@ -271,6 +271,7 @@ Dariusz Stojaczyk <dariuszx.stojaczyk at intel.com>
>  Darren Edamura <darren.edamura at broadcom.com>
>  Dave Burley <dave.burley at accelercomm.com>
>  Dave Ertman <david.m.ertman at intel.com>
> +Dave Johnson <davejo at cisco.com>
>  David Binderman <dcb314 at hotmail.com>
>  David Bouyeure <david.bouyeure at fraudbuster.mobi>
>  David Christensen <drc at linux.vnet.ibm.com> <david.christensen at broadcom.com>
> diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
> index f6eaaeb470..48bd8f2418 100644
> --- a/drivers/net/bnxt/bnxt.h
> +++ b/drivers/net/bnxt/bnxt.h
> @@ -811,6 +811,7 @@ struct bnxt {
>         uint16_t                max_l2_ctx;
>         uint16_t                max_rx_em_flows;
>         uint16_t                max_vnics;
> +#define BNXT_MAX_VNICS_COS_CLASSIFY    8
>         uint16_t                max_stat_ctx;
>         uint16_t                max_tpa_v2;
>         uint16_t                first_vf_id;
> diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
> index 51e1e2d6b3..d86ac73293 100644
> --- a/drivers/net/bnxt/bnxt_hwrm.c
> +++ b/drivers/net/bnxt/bnxt_hwrm.c
> @@ -902,7 +902,10 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
>         bp->max_l2_ctx = rte_le_to_cpu_16(resp->max_l2_ctxs);
>         if (!BNXT_CHIP_P5(bp) && !bp->pdev->max_vfs)
>                 bp->max_l2_ctx += bp->max_rx_em_flows;
> -       bp->max_vnics = rte_le_to_cpu_16(resp->max_vnics);
> +       if (bp->vnic_cap_flags & BNXT_VNIC_CAP_COS_CLASSIFY)
> +               bp->max_vnics = rte_le_to_cpu_16(BNXT_MAX_VNICS_COS_CLASSIFY);
> +       else
> +               bp->max_vnics = rte_le_to_cpu_16(resp->max_vnics);
>         PMD_DRV_LOG(DEBUG, "Max l2_cntxts is %d vnics is %d\n",
>                     bp->max_l2_ctx, bp->max_vnics);
>         bp->max_stat_ctx = rte_le_to_cpu_16(resp->max_stat_ctx);
> @@ -1211,7 +1214,10 @@ int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp)
>         bp->max_l2_ctx = rte_le_to_cpu_16(resp->max_l2_ctxs);
>         if (!BNXT_CHIP_P5(bp) && !bp->pdev->max_vfs)
>                 bp->max_l2_ctx += bp->max_rx_em_flows;
> -       bp->max_vnics = rte_le_to_cpu_16(resp->max_vnics);
> +       if (bp->vnic_cap_flags & BNXT_VNIC_CAP_COS_CLASSIFY)
> +               bp->max_vnics = rte_le_to_cpu_16(BNXT_MAX_VNICS_COS_CLASSIFY);
> +       else
> +               bp->max_vnics = rte_le_to_cpu_16(resp->max_vnics);
>         bp->max_stat_ctx = rte_le_to_cpu_16(resp->max_stat_ctx);
>         bp->max_nq_rings = rte_le_to_cpu_16(resp->max_msix);
>         bp->vf_resv_strategy = rte_le_to_cpu_16(resp->vf_reservation_strategy);
> --
> 2.35.6
>
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