include/net/tc_act/tc_skbedit.h

Source file repositories/reference/linux-study-clean/include/net/tc_act/tc_skbedit.h

File Facts

System
Linux kernel
Corpus path
include/net/tc_act/tc_skbedit.h
Extension
.h
Size
3165 bytes
Lines
141
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct tcf_skbedit_params {
	int action;
	u32 flags;
	u32 priority;
	u32 mark;
	u32 mask;
	u16 queue_mapping;
	u16 mapping_mod;
	u16 ptype;
	struct rcu_head rcu;
};

struct tcf_skbedit {
	struct tc_action common;
	struct tcf_skbedit_params __rcu *params;
};
#define to_skbedit(a) ((struct tcf_skbedit *)a)

/* Return true iff action is the one identified by FLAG. */
static inline bool is_tcf_skbedit_with_flag(const struct tc_action *a, u32 flag)
{
#ifdef CONFIG_NET_CLS_ACT
	u32 flags;

	if (a->ops && a->ops->id == TCA_ID_SKBEDIT) {
		rcu_read_lock();
		flags = rcu_dereference(to_skbedit(a)->params)->flags;
		rcu_read_unlock();
		return flags == flag;
	}
#endif
	return false;
}

/* Return true iff action is mark */
static inline bool is_tcf_skbedit_mark(const struct tc_action *a)
{
	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_MARK);
}

static inline u32 tcf_skbedit_mark(const struct tc_action *a)
{
	u32 mark;

	rcu_read_lock();
	mark = rcu_dereference(to_skbedit(a)->params)->mark;
	rcu_read_unlock();

	return mark;
}

/* Return true iff action is ptype */
static inline bool is_tcf_skbedit_ptype(const struct tc_action *a)
{
	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_PTYPE);
}

static inline u32 tcf_skbedit_ptype(const struct tc_action *a)
{
	u16 ptype;

	rcu_read_lock();
	ptype = rcu_dereference(to_skbedit(a)->params)->ptype;
	rcu_read_unlock();

	return ptype;
}

/* Return true iff action is priority */
static inline bool is_tcf_skbedit_priority(const struct tc_action *a)
{
	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_PRIORITY);
}

static inline u32 tcf_skbedit_priority(const struct tc_action *a)
{
	u32 priority;

	rcu_read_lock();
	priority = rcu_dereference(to_skbedit(a)->params)->priority;
	rcu_read_unlock();

	return priority;
}

static inline u16 tcf_skbedit_rx_queue_mapping(const struct tc_action *a)
{
	u16 rx_queue;

	rcu_read_lock();

Annotation

Implementation Notes