linux-kernel - Re: [net PATCH 1/2] octeontx2-af: fixed resource availability check

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Message-ID: <b6084daf-990d-9ec2-4fc3-dd95fb25eb72@intel.com>
Date:   Thu, 8 Jun 2023 16:47:58 -0700
From:   "Samudrala, Sridhar" <sridhar.samudrala@...el.com>
To:     Naveen Mamindlapalli <naveenm@...vell.com>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <sgoutham@...vell.com>
CC:     Satha Rao <skoteshwar@...vell.com>
Subject: Re: [net PATCH 1/2] octeontx2-af: fixed resource availability check



On 6/8/2023 4:42 AM, Naveen Mamindlapalli wrote:
> From: Satha Rao <skoteshwar@...vell.com>
> 
> txschq_alloc response have two different arrays to store continuous
> and non-continuous schedulers of each level. Requested count should
> be checked for each array separately.
> 
> Fixes: 5d9b976d4480 ("octeontx2-af: Support fixed transmit scheduler topology")
> Signed-off-by: Satha Rao <skoteshwar@...vell.com>
> Signed-off-by: Sunil Kovvuri Goutham <sgoutham@...vell.com>
> Signed-off-by: Naveen Mamindlapalli <naveenm@...vell.com>

Reviewed-by: Sridhar Samudrala <sridhar.samudrala@...el.com>

> ---
>   drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> index 26e639e57dae..967370c0a649 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> @@ -1864,7 +1864,8 @@ static int nix_check_txschq_alloc_req(struct rvu *rvu, int lvl, u16 pcifunc,
>   		free_cnt = rvu_rsrc_free_count(&txsch->schq);
>   	}
>   
> -	if (free_cnt < req_schq || req_schq > MAX_TXSCHQ_PER_FUNC)
> +	if (free_cnt < req_schq || req->schq[lvl] > MAX_TXSCHQ_PER_FUNC ||
> +	    req->schq_contig[lvl] > MAX_TXSCHQ_PER_FUNC)
>   		return NIX_AF_ERR_TLX_ALLOC_FAIL;
>   
>   	/* If contiguous queues are needed, check for availability */