net: wrap sock->sk_cgrp_prioidx and ->sk_classid inside a struct
Introduce sock->sk_cgrp_data which is a struct sock_cgroup_data.
->sk_cgroup_prioidx and ->sk_classid are moved into it. The struct
and its accessors are defined in cgroup-defs.h. This is to prepare
for overloading the fields with a cgroup pointer.
This patch mostly performs equivalent conversions but the followings
are noteworthy.
* Equality test before updating classid is removed from
sock_update_classid(). This shouldn't make any noticeable
difference and a similar test will be implemented on the helper side
later.
* sock_update_netprioidx() now takes struct sock_cgroup_data and can
be moved to netprio_cgroup.h without causing include dependency
loop. Moved.
* The dummy version of sock_update_netprioidx() converted to a static
inline function while at it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/Kconfig b/net/Kconfig
index 127da94..11f8c22 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -250,9 +250,14 @@
depends on SMP
default y
+config SOCK_CGROUP_DATA
+ bool
+ default n
+
config CGROUP_NET_PRIO
bool "Network priority cgroup"
depends on CGROUPS
+ select SOCK_CGROUP_DATA
---help---
Cgroup subsystem for use in assigning processes to network priorities on
a per-interface basis.
@@ -260,6 +265,7 @@
config CGROUP_NET_CLASSID
bool "Network classid cgroup"
depends on CGROUPS
+ select SOCK_CGROUP_DATA
---help---
Cgroup subsystem for use as general purpose socket classid marker that is
being used in cls_cgroup and for netfilter matching.