netdev - Re: [PATCH net 1/1] net: stmmac: Add queue reset into stmmac_xdp

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Date:   Tue, 04 Apr 2023 09:11:17 -0700
From:   Alexander H Duyck <alexander.duyck@...il.com>
To:     Song Yoong Siang <yoong.siang.song@...el.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Christian Marangi <ansuelsmth@...il.com>
Cc:     netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        bpf@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH net 1/1] net: stmmac: Add queue reset into
 stmmac_xdp_open() function

On Tue, 2023-04-04 at 12:48 +0800, Song Yoong Siang wrote:
> Queue reset was moved out from __init_dma_rx_desc_rings() and
> __init_dma_tx_desc_rings() functions. Thus, the driver fails to transmit
> and receive packet after XDP prog setup.
> 
> This commit adds the missing queue reset into stmmac_xdp_open() function.
> 
> Fixes: f9ec5723c3db ("net: ethernet: stmicro: stmmac: move queue reset to dedicated functions")
> Cc: <stable@...r.kernel.org> # 6.0+
> Signed-off-by: Song Yoong Siang <yoong.siang.song@...el.com>
> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 3e5bbfe3c41b..e4c27eb17bd2 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -6630,6 +6630,8 @@ int stmmac_xdp_open(struct net_device *dev)
>  		goto init_error;
>  	}
>  
> +	stmmac_reset_queues_param(priv);
> +
>  	/* DMA CSR Channel configuration */
>  	for (chan = 0; chan < dma_csr_ch; chan++) {
>  		stmmac_init_chan(priv, priv->ioaddr, priv->plat->dma_cfg, chan);

Looks good to me.

Reviewed-by: Alexander Duyck <alexanderduyck@...com>