From: Paolo Abeni <pabeni@redhat.com>
To: Parthiban Veerasooran <parthiban.veerasooran@microchip.com>,
andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
UNGLinuxDriver@microchip.com, jacob.e.keller@intel.com
Subject: Re: [PATCH net v2 1/2] net: ethernet: oa_tc6: fix infinite loop error when tx credits becomes 0
Date: Tue, 26 Nov 2024 11:44:38 +0100 [thread overview]
Message-ID: <b48da380-3071-4a94-911d-8d742d9120c2@redhat.com> (raw)
In-Reply-To: <20241122102135.428272-2-parthiban.veerasooran@microchip.com>
On 11/22/24 11:21, Parthiban Veerasooran wrote:
> SPI thread wakes up to perform SPI transfer whenever there is an TX skb
> from n/w stack or interrupt from MAC-PHY. Ethernet frame from TX skb is
> transferred based on the availability tx credits in the MAC-PHY which is
> reported from the previous SPI transfer. Sometimes there is a possibility
> that TX skb is available to transmit but there is no tx credits from
> MAC-PHY. In this case, there will not be any SPI transfer but the thread
> will be running in an endless loop until tx credits available again.
>
> So checking the availability of tx credits along with TX skb will prevent
> the above infinite loop. When the tx credits available again that will be
> notified through interrupt which will trigger the SPI transfer to get the
> available tx credits.
>
> Fixes: 53fbde8ab21e ("net: ethernet: oa_tc6: implement transmit path to transfer tx ethernet frames")
>
> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
> Signed-off-by: Parthiban Veerasooran <parthiban.veerasooran@microchip.com>
Please, avoid empty lines between the Fixes tag and the SoB
Thanks,
Paolo
next prev parent reply other threads:[~2024-11-26 10:44 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-22 10:21 [PATCH net v2 0/2] Fixes on the OPEN Alliance TC6 10BASE-T1x MAC-PHY support generic lib Parthiban Veerasooran
2024-11-22 10:21 ` [PATCH net v2 1/2] net: ethernet: oa_tc6: fix infinite loop error when tx credits becomes 0 Parthiban Veerasooran
2024-11-26 10:44 ` Paolo Abeni [this message]
2024-11-27 8:43 ` Parthiban.Veerasooran
2024-11-22 10:21 ` [PATCH net v2 2/2] net: ethernet: oa_tc6: fix tx skb race condition between reference pointers Parthiban Veerasooran
2024-11-26 10:41 ` Paolo Abeni
2024-11-27 10:49 ` Parthiban.Veerasooran
2024-11-27 12:11 ` Paolo Abeni
2024-11-28 5:43 ` Parthiban.Veerasooran
2024-12-02 3:37 ` Parthiban.Veerasooran
2024-12-04 2:52 ` Jakub Kicinski
2024-12-04 8:28 ` Parthiban.Veerasooran
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