[IPV4]: Store the net pointer on devinet's ctl tables

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Some handers and strategies of devinet sysctl tables need
to know the net to propagate the ctl change to all the
net devices.

I use the (currently unused) extra2 pointer on the tables
to get it.

Holding the reference on the struct net is not possible,
because otherwise we'll get a net->ctl_table->net circular
dependency. But since the ctl tables are unregistered during
the net destruction, this is safe to get it w/o additional
protection.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Pavel Emelyanov 2007-12-16 13:31:14 -08:00 • committed by David S. Miller

parent 32e569b727

commit c0ce9fb304

1 changed files with 18 additions and 11 deletions

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net/ipv4/devinet.c

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