netdev - [PATCH net-2.6.25 0/7] Make ipv4_devconf (all and default) live in net namespaces

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Date:	Tue, 11 Dec 2007 20:44:09 +0300
From:	Pavel Emelyanov <xemul@...nvz.org>
To:	David Miller <davem@...emloft.net>
CC:	Linux Netdev List <netdev@...r.kernel.org>,
	Linux Containers <containers@...ts.osdl.org>, devel@...nvz.org
Subject: [PATCH net-2.6.25 0/7] Make ipv4_devconf (all and default) live in
 net namespaces

The ipv4_devconf_(all) and ipv4_devconf_dflt are currently
global, but should be per-namespace.

This set moves them on the struct net. Or, more precisely,
on the struct netns_ipv4, which in turn is on the struct net.

There are two minor things that are to be done additionally
to this set:

 1. The snmp_seq_show() needs the IPV4_DEVCONF_ALL(FORWARDING)
    value, but since this entry is still global no valid struct 
    net can be get in it, so I use the init_net's one. After 
    snmp is made per-namespace, this will be fixed easily.

 2. The rt_fill_info() needs the IPV4_DEVCONF_ALL(MC_FORWARDING),
    but the routing code is not tuned to work inside namespaces
    yet, so I use the init_net in it as well. Denis is currently
    working on ipv4 routing, so this will be prepared shortly.

Happily, all the other places of devconf-s usage can provide a
struct net pointer.

Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>
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