include/net/netprio_cgroup.h
Source file repositories/reference/linux-study-clean/include/net/netprio_cgroup.h
File Facts
- System
- Linux kernel
- Corpus path
include/net/netprio_cgroup.h- Extension
.h- Size
- 1047 bytes
- Lines
- 55
- Domain
- Networking Core
- Bucket
- Sockets, Protocols, Packet Path, And Network Policy
- Inferred role
- Networking Core: implementation source
- Status
- source implementation candidate
Why This File Exists
Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
- Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
- Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/cgroup.hlinux/hardirq.hlinux/rcupdate.h
Detected Declarations
struct netprio_mapfunction task_netprioidxfunction sock_update_netprioidxfunction task_netprioidxfunction sock_update_netprioidx
Annotated Snippet
struct netprio_map {
struct rcu_head rcu;
u32 priomap_len;
u32 priomap[];
};
static inline u32 task_netprioidx(struct task_struct *p)
{
struct cgroup_subsys_state *css;
u32 idx;
rcu_read_lock();
css = task_css(p, net_prio_cgrp_id);
idx = css->id;
rcu_read_unlock();
return idx;
}
static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd)
{
if (in_interrupt())
return;
sock_cgroup_set_prioidx(skcd, task_netprioidx(current));
}
#else /* !CONFIG_CGROUP_NET_PRIO */
static inline u32 task_netprioidx(struct task_struct *p)
{
return 0;
}
static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd)
{
}
#endif /* CONFIG_CGROUP_NET_PRIO */
#endif /* _NET_CLS_CGROUP_H */
Annotation
- Immediate include surface: `linux/cgroup.h`, `linux/hardirq.h`, `linux/rcupdate.h`.
- Detected declarations: `struct netprio_map`, `function task_netprioidx`, `function sock_update_netprioidx`, `function task_netprioidx`, `function sock_update_netprioidx`.
- Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
- Implementation status: source implementation candidate.
- Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.