From: Piotr Raczynski <piotr.raczynski@intel.com>
To: Jochen Henneberg <jh@henneberg-systemdesign.com>
Cc: <netdev@vger.kernel.org>,
Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Jose Abreu <joabreu@synopsys.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
"Ong Boon Leong" <boon.leong.ong@intel.com>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH net V2 2/2] net: stmmac: Premature loop termination check was ignored on ZC rx
Date: Fri, 17 Mar 2023 13:32:24 +0100 [thread overview]
Message-ID: <ZBRd2HyZdz52eXyz@nimitz> (raw)
In-Reply-To: <20230316075940.695583-3-jh@henneberg-systemdesign.com>
On Thu, Mar 16, 2023 at 08:59:40AM +0100, Jochen Henneberg wrote:
> The premature loop termination check makes sense only in case of the
> jump to read_again where the count may have been updated. But
> read_again did not include the check.
>
> Fixes: bba2556efad6 ("net: stmmac: Enable RX via AF_XDP zero-copy")
> Signed-off-by: Jochen Henneberg <jh@henneberg-systemdesign.com>
> ---
> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index ea51c7c93101..4886668a54c5 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -5031,10 +5031,10 @@ static int stmmac_rx_zc(struct stmmac_priv *priv, int limit, u32 queue)
> len = 0;
> }
>
> +read_again:
> if (count >= limit)
> break;
>
> -read_again:
> buf1_len = 0;
> entry = next_entry;
> buf = &rx_q->buf_pool[entry];
> --
> 2.39.2
>
LGTM, thanks.
Reviewed-by: Piotr Raczynski <piotr.raczynski@intel.com>
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next prev parent reply other threads:[~2023-03-17 12:33 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-14 12:37 [PATCH net 0/2] net: stmmac: Premature loop termination check was ignored Jochen Henneberg
2023-03-14 12:37 ` [PATCH net 1/2] " Jochen Henneberg
2023-03-14 14:44 ` Piotr Raczynski
2023-03-14 15:01 ` Jochen Henneberg
2023-03-15 8:59 ` Piotr Raczynski
2023-03-15 9:13 ` Jochen Henneberg
2023-03-14 12:37 ` [PATCH net 2/2] " Jochen Henneberg
2023-03-16 7:59 ` [PATCH net V2 0/2] " Jochen Henneberg
2023-03-16 7:59 ` [PATCH net V2 1/2] net: stmmac: Premature loop termination check was ignored on rx Jochen Henneberg
2023-03-17 12:32 ` Piotr Raczynski
2023-03-18 5:21 ` Jakub Kicinski
2023-03-18 8:38 ` Jochen Henneberg
2023-03-19 2:01 ` Jakub Kicinski
2023-03-20 9:04 ` Jochen Henneberg
2023-03-20 18:36 ` Jakub Kicinski
2023-03-21 18:53 ` Jochen Henneberg
2023-03-16 7:59 ` [PATCH net V2 2/2] net: stmmac: Premature loop termination check was ignored on ZC rx Jochen Henneberg
2023-03-17 12:32 ` Piotr Raczynski [this message]
2023-03-16 23:20 ` [PATCH net V2 0/2] net: stmmac: Premature loop termination check was ignored Horatiu Vultur
2023-03-17 12:31 ` Piotr Raczynski
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