On Mon, Nov 21, 2022 at 04:45:13PM +0100, Santiago Ruano Rincón wrote:
> ZLP for DisplayLink ethernet devices was enabled in 6.0:
> 266c0190aee3 ("net/cdc_ncm: Enable ZLP for DisplayLink ethernet devices").
> The related driver_info should be the "same as cdc_ncm_info, but with
> FLAG_SEND_ZLP". However, set_rx_mode that enables handling multicast
> traffic was missing in the new cdc_ncm_zlp_info.
>
> usbnet_cdc_update_filter rx mode was introduced in linux 5.9 with:
> e10dcb1b6ba7 ("net: cdc_ncm: hook into set_rx_mode to admit multicast
> traffic")
>
> Without this hook, multicast, and then IPv6 SLAAC, is broken.
>
> Fixes: 266c0190aee3 ("net/cdc_ncm: Enable ZLP for DisplayLink ethernet devices")
> Signed-off-by: Santiago Ruano Rincón <santiago.ruano-rincon@xxxxxxxxxxxxxxxxx>
> ---
> drivers/net/usb/cdc_ncm.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
> index 8d5cbda33f66..0897fdb6254b 100644
> --- a/drivers/net/usb/cdc_ncm.c
> +++ b/drivers/net/usb/cdc_ncm.c
> @@ -1915,6 +1915,7 @@ static const struct driver_info cdc_ncm_zlp_info = {
> .status = cdc_ncm_status,
> .rx_fixup = cdc_ncm_rx_fixup,
> .tx_fixup = cdc_ncm_tx_fixup,
> + .set_rx_mode = usbnet_cdc_update_filter,
> };
>
> /* Same as cdc_ncm_info, but with FLAG_WWAN */
> --
> 2.38.1
>
Hi,
This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him
a patch that has triggered this response. He used to manually respond
to these common problems, but in order to save his sanity (he kept
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created. Hopefully you will not take offence and will fix the problem
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