[PATCH net-next v4 1/2] net: xilinx: axienet: Report RxRject as rx_dropped

[Pandey, Radhey Shyam]

> -----Original Message-----
> From: Sean Anderson <sean.anderson at linux.dev>
> Sent: Tuesday, August 20, 2024 11:24 PM
> To: Andrew Lunn <andrew at lunn.ch>; Pandey, Radhey Shyam
> <radhey.shyam.pandey at amd.com>; netdev at vger.kernel.org
> Cc: Simek, Michal <michal.simek at amd.com>; linux-kernel at vger.kernel.org;
> Russell King <linux at armlinux.org.uk>; David S . Miller
> <davem at davemloft.net>; Jakub Kicinski <kuba at kernel.org>; Paolo Abeni
> <pabeni at redhat.com>; Eric Dumazet <edumazet at google.com>; Simon
> Horman <horms at kernel.org>; linux-arm-kernel at lists.infradead.org; Sean
> Anderson <sean.anderson at linux.dev>
> Subject: [PATCH net-next v4 1/2] net: xilinx: axienet: Report RxRject as
> rx_dropped
> 
> The Receive Frame Rejected interrupt is asserted whenever there was a
> receive error (bad FCS, bad length, etc.) or whenever the frame was
> dropped due to a mismatched address. So this is really a combination of
> rx_otherhost_dropped, rx_length_errors, rx_frame_errors, and
> rx_crc_errors. Mismatched addresses are common and aren't really errors
> at all (much like how fragments are normal on half-duplex links). To
> avoid confusion, report these events as rx_dropped. This better
> reflects what's going on: the packet was received by the MAC but dropped
> before being processed.
> 
> Signed-off-by: Sean Anderson <sean.anderson at linux.dev>
> Reviewed-by: Andrew Lunn <andrew at lunn.ch>

Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey at amd.com>

> ---
> 
> (no changes since v1)
> 
>  drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> index ca04c298daa2..b2d7c396e2e3 100644
> --- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> +++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> @@ -1296,7 +1296,7 @@ static irqreturn_t axienet_eth_irq(int irq, void
> *_ndev)
>  		ndev->stats.rx_missed_errors++;
> 
>  	if (pending & XAE_INT_RXRJECT_MASK)
> -		ndev->stats.rx_frame_errors++;
> +		ndev->stats.rx_dropped++;
> 
>  	axienet_iow(lp, XAE_IS_OFFSET, pending);
>  	return IRQ_HANDLED;
> --
> 2.35.1.1320.gc452695387.dirty