Re: [PATCH net] net: wwan: qcom_bam_dmux: account network packets

[Dmitry Sinyavin]

Thanks for the review!

31.08.2026 11:23, Stephan Gerhold wrote:
> This is a bit odd, why did you split the two if (netdev) statements?
> The skb stays alive until it is freed here, so you should be able to
> obtain the length even after bam_dmux_tx_done().

Agreed, will join them in v2.

> Would it be better to increment the stats after the packet was already
> passed to the network subsystem in this call?
>
> I'm not sure if we need to check the return code of netif_receive_skb()
> and increment rx_dropped if it fails. This seems to be handled
> differently in various drivers. Maybe someone else knows?

My understanding is that rx_packets counts good packets received by the 
host even if they are dropped in the stack downstream. I also checked 
that mac80211 follows the same pattern: first dev_sw_netstats_rx_add(), 
then netif_receive_skb(), ignoring the result (the documentation for the 
latter also states that the result is "usually ignored"). If there are 
no strong objections, I'd leave that as is.

Best regards,
Dmitry