mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 23:23:55 +08:00
5bc1421e34
This patch adds in the infrastructure code to create the network priority cgroup. The cgroup, in addition to the standard processes file creates two control files: 1) prioidx - This is a read-only file that exports the index of this cgroup. This is a value that is both arbitrary and unique to a cgroup in this subsystem, and is used to index the per-device priority map 2) priomap - This is a writeable file. On read it reports a table of 2-tuples <name:priority> where name is the name of a network interface and priority is indicates the priority assigned to frames egresessing on the named interface and originating from a pid in this cgroup This cgroup allows for skb priority to be set prior to a root qdisc getting selected. This is benenficial for DCB enabled systems, in that it allows for any application to use dcb configured priorities so without application modification Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: John Fastabend <john.r.fastabend@intel.com> CC: Robert Love <robert.w.love@intel.com> CC: "David S. Miller" <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
/*
|
|
* netprio_cgroup.h Control Group Priority set
|
|
*
|
|
*
|
|
* Authors: Neil Horman <nhorman@tuxdriver.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
*/
|
|
|
|
#ifndef _NETPRIO_CGROUP_H
|
|
#define _NETPRIO_CGROUP_H
|
|
#include <linux/module.h>
|
|
#include <linux/cgroup.h>
|
|
#include <linux/hardirq.h>
|
|
#include <linux/rcupdate.h>
|
|
|
|
struct cgroup_netprio_state
|
|
{
|
|
struct cgroup_subsys_state css;
|
|
u32 prioidx;
|
|
};
|
|
|
|
struct netprio_map {
|
|
struct rcu_head rcu;
|
|
u32 priomap_len;
|
|
u32 priomap[];
|
|
};
|
|
|
|
#ifdef CONFIG_CGROUPS
|
|
|
|
#ifndef CONFIG_NETPRIO_CGROUP
|
|
extern int net_prio_subsys_id;
|
|
#endif
|
|
|
|
extern void sock_update_netprioidx(struct sock *sk);
|
|
|
|
static inline struct cgroup_netprio_state
|
|
*task_netprio_state(struct task_struct *p)
|
|
{
|
|
#if IS_ENABLED(CONFIG_NETPRIO_CGROUP)
|
|
return container_of(task_subsys_state(p, net_prio_subsys_id),
|
|
struct cgroup_netprio_state, css);
|
|
#else
|
|
return NULL;
|
|
#endif
|
|
}
|
|
|
|
#else
|
|
|
|
#define sock_update_netprioidx(sk)
|
|
#define skb_update_prio(skb)
|
|
|
|
static inline struct cgroup_netprio_state
|
|
*task_netprio_state(struct task_struct *p)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* _NET_CLS_CGROUP_H */
|