Re: [B.A.T.M.A.N.] [PATCH] batman-adv: Add get_ethtool_stats() support

[Marek Lindner <lindner_marek@yahoo.de>]

On Tuesday, April 17, 2012 01:24:55 Martin Hundebøll wrote:
> Added additional counters in a bat_stats structure, which are exported
> through the ethtool api. The counters are specific to batman-adv and
> includes:
>  forwarded packets
>  management packets (OGMs at this point)
>  translation table packets
>  distributed arp table packets

Looks very good! A few questions though:


> @@ -869,6 +875,9 @@ static int route_unicast_packet(struct sk_buff *skb,
> struct hard_iface *recv_if) /* decrement ttl */
>  	unicast_packet->header.ttl--;
> 
> +	/* Update stats counter */
> +	bat_priv->bat_stats.forward++;

Here we only count the number of packets. Would it be possible to also count 
the number of bytes ? Similar to tx_packets and tx_bytes ?
Same for management tx/bytes.


> +struct bat_stats {
> +	uint64_t forward;
> +	uint64_t mgmt_tx;
> +	uint64_t mgmt_rx;
> +	uint64_t tt_request_tx;
> +	uint64_t tt_request_rx;
> +	uint64_t tt_response_tx;
> +	uint64_t tt_response_rx;
> +	uint64_t tt_roam_adv_tx;
> +	uint64_t tt_roam_adv_rx;
> +	uint64_t dat_request_tx;
> +	uint64_t dat_request_rx;
> +	uint64_t dat_reply_tx;
> +	uint64_t dat_reply_rx;
> +};

How do we handle code segments that are not compiled into the module ? We 
simply leave this counters hanging around at 0 ?

Regards,
Marek