On 6/15/2025 11:33 PM, Meghana Malladi wrote:
> While transmitting XDP frames for XDP_TX, page_pool is
> used to get the DMA buffers (already mapped to the pages)
> and need to be freed/reycled once the transmission is complete.
> This need not be explicitly done by the driver as this is handled
> more gracefully by the xdp driver while returning the xdp frame.
> __xdp_return() frees the XDP memory based on its memory type,
> under which page_pool memory is also handled. This change fixes
> the transmit queue timeout while running XDP_TX.
>
> logs:
> [ 309.069682] icssg-prueth icssg1-eth eth2: NETDEV WATCHDOG: CPU: 0: transmit queue 0 timed out 45860 ms
> [ 313.933780] icssg-prueth icssg1-eth eth2: NETDEV WATCHDOG: CPU: 0: transmit queue 0 timed out 50724 ms
> [ 319.053656] icssg-prueth icssg1-eth eth2: NETDEV WATCHDOG: CPU: 0: transmit queue 0 timed out 55844 ms
> ...
>
> Fixes: 62aa3246f462 ("net: ti: icssg-prueth: Add XDP support")
> Signed-off-by: Meghana Malladi <m-malladi@xxxxxx>
> ---
Reviewed-by: Jacob Keller <jacob.e.keller@xxxxxxxxx>
