[PATCH net-next v2] net: xilinx: axienet: Use NL_SET_ERR_MSG instead of netdev_err

[PATCH net-next v2] net: xilinx: axienet: Use NL_SET_ERR_MSG instead of netdev_err

[Sean Anderson]

This error message can be triggered by userspace. Use NL_SET_ERR_MSG so
the message is returned to the user and to avoid polluting the kernel
logs. Additionally, change the return value from EFAULT to EBUSY to
better reflect the error (which has nothing to do with addressing).

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
---

Changes in v2:
- Split off from stats series
- Document return value change

 drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index c29809cd9201..5f98daa5b341 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -1945,9 +1945,9 @@ axienet_ethtools_set_coalesce(struct net_device *ndev,
 	struct axienet_local *lp = netdev_priv(ndev);
 
 	if (netif_running(ndev)) {
-		netdev_err(ndev,
-			   "Please stop netif before applying configuration\n");
-		return -EFAULT;
+		NL_SET_ERR_MSG(extack,
+			       "Please stop netif before applying configuration");
+		return -EBUSY;
 	}
 
 	if (ecoalesce->rx_max_coalesced_frames)
-- 
2.35.1.1320.gc452695387.dirty

Re: [PATCH net-next v2] net: xilinx: axienet: Use NL_SET_ERR_MSG instead of netdev_err

[Andrew Lunn]

On Tue, Jun 11, 2024 at 11:41:16AM -0400, Sean Anderson wrote:
> This error message can be triggered by userspace. Use NL_SET_ERR_MSG so
> the message is returned to the user and to avoid polluting the kernel
> logs. Additionally, change the return value from EFAULT to EBUSY to
> better reflect the error (which has nothing to do with addressing).
> 
> Signed-off-by: Sean Anderson <sean.anderson@linux.dev>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

RE: [PATCH net-next v2] net: xilinx: axienet: Use NL_SET_ERR_MSG instead of netdev_err

[Pandey, Radhey Shyam]

> -----Original Message-----
> From: Sean Anderson <sean.anderson@linux.dev>
> Sent: Tuesday, June 11, 2024 9:11 PM
> To: Pandey, Radhey Shyam <radhey.shyam.pandey@amd.com>; Andrew
> Lunn <andrew@lunn.ch>; netdev@vger.kernel.org
> Cc: Jakub Kicinski <kuba@kernel.org>; linux-kernel@vger.kernel.org; Russell
> King <linux@armlinux.org.uk>; Simek, Michal <michal.simek@amd.com>;
> Paolo Abeni <pabeni@redhat.com>; Eric Dumazet <edumazet@google.com>;
> David S . Miller <davem@davemloft.net>; linux-arm-
> kernel@lists.infradead.org; Sean Anderson <sean.anderson@linux.dev>
> Subject: [PATCH net-next v2] net: xilinx: axienet: Use NL_SET_ERR_MSG
> instead of netdev_err
> 
> This error message can be triggered by userspace. Use NL_SET_ERR_MSG so
> the message is returned to the user and to avoid polluting the kernel
> logs. Additionally, change the return value from EFAULT to EBUSY to
> better reflect the error (which has nothing to do with addressing).
> 
> Signed-off-by: Sean Anderson <sean.anderson@linux.dev>

Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Thanks!
> ---
> 
> Changes in v2:
> - Split off from stats series
> - Document return value change
> 
>  drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> index c29809cd9201..5f98daa5b341 100644
> --- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> +++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> @@ -1945,9 +1945,9 @@ axienet_ethtools_set_coalesce(struct net_device
> *ndev,
>  	struct axienet_local *lp = netdev_priv(ndev);
> 
>  	if (netif_running(ndev)) {
> -		netdev_err(ndev,
> -			   "Please stop netif before applying
> configuration\n");
> -		return -EFAULT;
> +		NL_SET_ERR_MSG(extack,
> +			       "Please stop netif before applying
> configuration");
> +		return -EBUSY;
>  	}
> 
>  	if (ecoalesce->rx_max_coalesced_frames)
> --
> 2.35.1.1320.gc452695387.dirty

Re: [PATCH net-next v2] net: xilinx: axienet: Use NL_SET_ERR_MSG instead of netdev_err

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Tue, 11 Jun 2024 11:41:16 -0400 you wrote:
> This error message can be triggered by userspace. Use NL_SET_ERR_MSG so
> the message is returned to the user and to avoid polluting the kernel
> logs. Additionally, change the return value from EFAULT to EBUSY to
> better reflect the error (which has nothing to do with addressing).
> 
> Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
> 
> [...]

Here is the summary with links:
  - [net-next,v2] net: xilinx: axienet: Use NL_SET_ERR_MSG instead of netdev_err
    https://git.kernel.org/netdev/net-next/c/32b06603f879

You are awesome, thank you!
-- 
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