[PATCH net-next v4] net: stmmac: dwmac-qcom-ethqos: Enable TBS on all queues but 0

[PATCH net-next v4] net: stmmac: dwmac-qcom-ethqos: Enable TBS on all queues but 0

[Abhishek Chauhan]

TSO and TBS cannot co-exist. TBS requires special descriptor to be
allocated at bootup. Initialising Tx queues at probe to support
TSO and TBS can help in allocating those resources at bootup.

TX queues with TBS can support etf qdisc hw offload.

This is similar to the patch raised by NXP
commit 3b12ec8f618e ("net: stmmac: dwmac-imx: set TSO/TBS TX queues default settings")

Tested-by: Andrew Halaney <ahalaney@redhat.com> # sa8775p-ride
Signed-off-by: Abhishek Chauhan <quic_abchauha@quicinc.com>
---
Changes since v3:
- The change is Tested-by Andrew Halaney <ahalaney@redhat.com>
  on Qualcomm Ride platform
- Change log is removed from the commit text

Changes since v2:
- Fixed the styling of comment in the dwmac-qcom-ethqos.c
- Followed the upstream format to give other glue
  driver references to solve the same problem
- Appended  the subject with net-next
- Discussion of why this patch is required is discussed in
https://lore.kernel.org/netdev/c2497eef-1041-4cd0-8220-42622c8902f4@quicinc.com/

Changes since v1:
- Subject is changed as per upstream guidelines
- Added a reference of a similar change done by NXP in
  body of the commit message

 drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index 31631e3f89d0..2691a250a5a7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -728,7 +728,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	struct stmmac_resources stmmac_res;
 	struct device *dev = &pdev->dev;
 	struct qcom_ethqos *ethqos;
-	int ret;
+	int ret, i;
 
 	ret = stmmac_get_platform_resources(pdev, &stmmac_res);
 	if (ret)
@@ -822,6 +822,10 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 		plat_dat->serdes_powerdown  = qcom_ethqos_serdes_powerdown;
 	}
 
+	/* Enable TSO on queue0 and enable TBS on rest of the queues */
+	for (i = 1; i < plat_dat->tx_queues_to_use; i++)
+		plat_dat->tx_queues_cfg[i].tbs_en = 1;
+
 	return devm_stmmac_pltfr_probe(pdev, plat_dat, &stmmac_res);
 }
 
-- 
2.25.1

Re: [PATCH net-next v4] net: stmmac: dwmac-qcom-ethqos: Enable TBS on all queues but 0

[Jeff Johnson]

On 2/8/2024 3:11 PM, Abhishek Chauhan wrote:
> TSO and TBS cannot co-exist. TBS requires special descriptor to be
> allocated at bootup. Initialising Tx queues at probe to support
> TSO and TBS can help in allocating those resources at bootup.
> 
> TX queues with TBS can support etf qdisc hw offload.
> 
> This is similar to the patch raised by NXP
> commit 3b12ec8f618e ("net: stmmac: dwmac-imx: set TSO/TBS TX queues default settings")
> 
> Tested-by: Andrew Halaney <ahalaney@redhat.com> # sa8775p-ride
> Signed-off-by: Abhishek Chauhan <quic_abchauha@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>

Re: [PATCH net-next v4] net: stmmac: dwmac-qcom-ethqos: Enable TBS on all queues but 0

[Andrew Halaney]

On Thu, Feb 08, 2024 at 03:11:45PM -0800, Abhishek Chauhan wrote:
> TSO and TBS cannot co-exist. TBS requires special descriptor to be
> allocated at bootup. Initialising Tx queues at probe to support
> TSO and TBS can help in allocating those resources at bootup.
> 
> TX queues with TBS can support etf qdisc hw offload.
> 
> This is similar to the patch raised by NXP
> commit 3b12ec8f618e ("net: stmmac: dwmac-imx: set TSO/TBS TX queues default settings")
> 
> Tested-by: Andrew Halaney <ahalaney@redhat.com> # sa8775p-ride
> Signed-off-by: Abhishek Chauhan <quic_abchauha@quicinc.com>

Reviewed-by: Andrew Halaney <ahalaney@redhat.com>

> ---
> Changes since v3:
> - The change is Tested-by Andrew Halaney <ahalaney@redhat.com>
>   on Qualcomm Ride platform
> - Change log is removed from the commit text
> 
> Changes since v2:
> - Fixed the styling of comment in the dwmac-qcom-ethqos.c
> - Followed the upstream format to give other glue
>   driver references to solve the same problem
> - Appended  the subject with net-next
> - Discussion of why this patch is required is discussed in
> https://lore.kernel.org/netdev/c2497eef-1041-4cd0-8220-42622c8902f4@quicinc.com/
> 
> Changes since v1:
> - Subject is changed as per upstream guidelines
> - Added a reference of a similar change done by NXP in
>   body of the commit message
> 
>  drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
> index 31631e3f89d0..2691a250a5a7 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
> @@ -728,7 +728,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
>  	struct stmmac_resources stmmac_res;
>  	struct device *dev = &pdev->dev;
>  	struct qcom_ethqos *ethqos;
> -	int ret;
> +	int ret, i;
>  
>  	ret = stmmac_get_platform_resources(pdev, &stmmac_res);
>  	if (ret)
> @@ -822,6 +822,10 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
>  		plat_dat->serdes_powerdown  = qcom_ethqos_serdes_powerdown;
>  	}
>  
> +	/* Enable TSO on queue0 and enable TBS on rest of the queues */
> +	for (i = 1; i < plat_dat->tx_queues_to_use; i++)
> +		plat_dat->tx_queues_cfg[i].tbs_en = 1;
> +
>  	return devm_stmmac_pltfr_probe(pdev, plat_dat, &stmmac_res);
>  }
>  
> -- 
> 2.25.1
> 

Re: [PATCH net-next v4] net: stmmac: dwmac-qcom-ethqos: Enable TBS on all queues but 0

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (main)
by David S. Miller <davem@davemloft.net>:

On Thu,  8 Feb 2024 15:11:45 -0800 you wrote:
> TSO and TBS cannot co-exist. TBS requires special descriptor to be
> allocated at bootup. Initialising Tx queues at probe to support
> TSO and TBS can help in allocating those resources at bootup.
> 
> TX queues with TBS can support etf qdisc hw offload.
> 
> This is similar to the patch raised by NXP
> commit 3b12ec8f618e ("net: stmmac: dwmac-imx: set TSO/TBS TX queues default settings")
> 
> [...]

Here is the summary with links:
  - [net-next,v4] net: stmmac: dwmac-qcom-ethqos: Enable TBS on all queues but 0
    https://git.kernel.org/netdev/net-next/c/0918c1dcd55c

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html