2a56a1fec2
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>
60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
/*
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* netprio_cgroup.h Control Group Priority set
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*
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*
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* Authors: Neil Horman <nhorman@tuxdriver.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#ifndef _NETPRIO_CGROUP_H
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#define _NETPRIO_CGROUP_H
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#include <linux/cgroup.h>
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#include <linux/hardirq.h>
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#include <linux/rcupdate.h>
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#if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
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struct netprio_map {
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struct rcu_head rcu;
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u32 priomap_len;
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u32 priomap[];
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};
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static inline u32 task_netprioidx(struct task_struct *p)
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{
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struct cgroup_subsys_state *css;
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u32 idx;
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rcu_read_lock();
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css = task_css(p, net_prio_cgrp_id);
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idx = css->cgroup->id;
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rcu_read_unlock();
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return idx;
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}
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static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd)
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{
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if (in_interrupt())
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return;
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sock_cgroup_set_prioidx(skcd, task_netprioidx(current));
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}
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#else /* !CONFIG_CGROUP_NET_PRIO */
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static inline u32 task_netprioidx(struct task_struct *p)
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{
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return 0;
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}
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static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd)
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{
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}
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#endif /* CONFIG_CGROUP_NET_PRIO */
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#endif /* _NET_CLS_CGROUP_H */
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