netdev - Re: [PATCH V3 net-next 1/3] ipv6: add the IPV6_FL_F_REFLECT flag to IPV6_FL_A

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Date:	Fri, 17 Jan 2014 00:41:03 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Florent Fourcot <florent.fourcot@...t-bretagne.fr>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH V3 net-next 1/3] ipv6: add the IPV6_FL_F_REFLECT flag to IPV6_FL_A_GET

On Thu, Jan 16, 2014 at 05:19:16PM +0100, Florent Fourcot wrote:
> diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
> index cbc9351..55823f1 100644
> --- a/net/ipv6/ip6_flowlabel.c
> +++ b/net/ipv6/ip6_flowlabel.c
> @@ -486,6 +486,11 @@ int ipv6_flowlabel_opt_get(struct sock *sk, struct in6_flowlabel_req *freq)
>  	struct ipv6_pinfo *np = inet6_sk(sk);
>  	struct ipv6_fl_socklist *sfl;
>  
> +	if (np->repflow) {
> +		freq->flr_label = np->flow_label;
> +		return 0;
> +	}
> +
>  	rcu_read_lock_bh();

I am still not sure if we should allow quering the label on repflow, if sender
can change it and we don't update the np->flow_label.

Greetings,

  Hannes

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