[linux-block.git] / include / linux / bpf-cgroup.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BPF_CGROUP_H
#define _BPF_CGROUP_H

#include <linux/bpf.h>
#include <linux/errno.h>
#include <linux/jump_label.h>
#include <linux/percpu.h>
#include <linux/percpu-refcount.h>
#include <linux/rbtree.h>
#include <uapi/linux/bpf.h>

struct sock;
struct sockaddr;
struct cgroup;
struct sk_buff;
struct bpf_map;
struct bpf_prog;
struct bpf_sock_ops_kern;
struct bpf_cgroup_storage;
struct ctl_table;
struct ctl_table_header;

#ifdef CONFIG_CGROUP_BPF

extern struct static_key_false cgroup_bpf_enabled_key;
#define cgroup_bpf_enabled static_branch_unlikely(&cgroup_bpf_enabled_key)

DECLARE_PER_CPU(struct bpf_cgroup_storage*,
		bpf_cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE]);

#define for_each_cgroup_storage_type(stype) \
	for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)

struct bpf_cgroup_storage_map;

struct bpf_storage_buffer {
	struct rcu_head rcu;
	char data[0];
};

struct bpf_cgroup_storage {
	union {
		struct bpf_storage_buffer *buf;
		void __percpu *percpu_buf;
	};
	struct bpf_cgroup_storage_map *map;
	struct bpf_cgroup_storage_key key;
	struct list_head list;
	struct rb_node node;
	struct rcu_head rcu;
};

struct bpf_prog_list {
	struct list_head node;
	struct bpf_prog *prog;
	struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE];
};

struct bpf_prog_array;

struct cgroup_bpf {
	/* array of effective progs in this cgroup */
	struct bpf_prog_array __rcu *effective[MAX_BPF_ATTACH_TYPE];

	/* attached progs to this cgroup and attach flags
	 * when flags == 0 or BPF_F_ALLOW_OVERRIDE the progs list will
	 * have either zero or one element
	 * when BPF_F_ALLOW_MULTI the list can have up to BPF_CGROUP_MAX_PROGS
	 */
	struct list_head progs[MAX_BPF_ATTACH_TYPE];
	u32 flags[MAX_BPF_ATTACH_TYPE];

	/* temp storage for effective prog array used by prog_attach/detach */
	struct bpf_prog_array *inactive;

	/* reference counter used to detach bpf programs after cgroup removal */
	struct percpu_ref refcnt;

	/* cgroup_bpf is released using a work queue */
	struct work_struct release_work;
};

int cgroup_bpf_inherit(struct cgroup *cgrp);
void cgroup_bpf_offline(struct cgroup *cgrp);

int __cgroup_bpf_attach(struct cgroup *cgrp, struct bpf_prog *prog,
			enum bpf_attach_type type, u32 flags);
int __cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
			enum bpf_attach_type type);
int __cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
		       union bpf_attr __user *uattr);

/* Wrapper for __cgroup_bpf_*() protected by cgroup_mutex */
int cgroup_bpf_attach(struct cgroup *cgrp, struct bpf_prog *prog,
		      enum bpf_attach_type type, u32 flags);
int cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
		      enum bpf_attach_type type, u32 flags);
int cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
		     union bpf_attr __user *uattr);

int __cgroup_bpf_run_filter_skb(struct sock *sk,
				struct sk_buff *skb,
				enum bpf_attach_type type);

int __cgroup_bpf_run_filter_sk(struct sock *sk,
			       enum bpf_attach_type type);

int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
				      struct sockaddr *uaddr,
				      enum bpf_attach_type type,
				      void *t_ctx);

int __cgroup_bpf_run_filter_sock_ops(struct sock *sk,
				     struct bpf_sock_ops_kern *sock_ops,
				     enum bpf_attach_type type);

int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
				      short access, enum bpf_attach_type type);

int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
				   struct ctl_table *table, int write,
				   void __user *buf, size_t *pcount,
				   loff_t *ppos, void **new_buf,
				   enum bpf_attach_type type);

int __cgroup_bpf_run_filter_setsockopt(struct sock *sock, int *level,
				       int *optname, char __user *optval,
				       int *optlen, char **kernel_optval);
int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
				       int optname, char __user *optval,
				       int __user *optlen, int max_optlen,
				       int retval);

static inline enum bpf_cgroup_storage_type cgroup_storage_type(
	struct bpf_map *map)
{
	if (map->map_type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE)
		return BPF_CGROUP_STORAGE_PERCPU;

	return BPF_CGROUP_STORAGE_SHARED;
}

static inline void bpf_cgroup_storage_set(struct bpf_cgroup_storage
					  *storage[MAX_BPF_CGROUP_STORAGE_TYPE])
{
	enum bpf_cgroup_storage_type stype;

	for_each_cgroup_storage_type(stype)
		this_cpu_write(bpf_cgroup_storage[stype], storage[stype]);
}

struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(struct bpf_prog *prog,
					enum bpf_cgroup_storage_type stype);
void bpf_cgroup_storage_free(struct bpf_cgroup_storage *storage);
void bpf_cgroup_storage_link(struct bpf_cgroup_storage *storage,
			     struct cgroup *cgroup,
			     enum bpf_attach_type type);
void bpf_cgroup_storage_unlink(struct bpf_cgroup_storage *storage);
int bpf_cgroup_storage_assign(struct bpf_prog *prog, struct bpf_map *map);
void bpf_cgroup_storage_release(struct bpf_prog *prog, struct bpf_map *map);

int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key, void *value);
int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
				     void *value, u64 flags);

/* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
#define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb)			      \
({									      \
	int __ret = 0;							      \
	if (cgroup_bpf_enabled)						      \
		__ret = __cgroup_bpf_run_filter_skb(sk, skb,		      \
						    BPF_CGROUP_INET_INGRESS); \
									      \
	__ret;								      \
})

#define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb)			       \
({									       \
	int __ret = 0;							       \
	if (cgroup_bpf_enabled && sk && sk == skb->sk) {		       \
		typeof(sk) __sk = sk_to_full_sk(sk);			       \
		if (sk_fullsock(__sk))					       \
			__ret = __cgroup_bpf_run_filter_skb(__sk, skb,	       \
						      BPF_CGROUP_INET_EGRESS); \
	}								       \
	__ret;								       \
})

#define BPF_CGROUP_RUN_SK_PROG(sk, type)				       \
({									       \
	int __ret = 0;							       \
	if (cgroup_bpf_enabled) {					       \
		__ret = __cgroup_bpf_run_filter_sk(sk, type);		       \
	}								       \
	__ret;								       \
})

#define BPF_CGROUP_RUN_PROG_INET_SOCK(sk)				       \
	BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET_SOCK_CREATE)

#define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk)				       \
	BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET4_POST_BIND)

#define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk)				       \
	BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET6_POST_BIND)

#define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, type)				       \
({									       \
	int __ret = 0;							       \
	if (cgroup_bpf_enabled)						       \
		__ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type,     \
							  NULL);	       \
	__ret;								       \
})

#define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, type, t_ctx)		       \
({									       \
	int __ret = 0;							       \
	if (cgroup_bpf_enabled)	{					       \
		lock_sock(sk);						       \
		__ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type,     \
							  t_ctx);	       \
		release_sock(sk);					       \
	}								       \
	__ret;								       \
})

#define BPF_CGROUP_RUN_PROG_INET4_BIND(sk, uaddr)			       \
	BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET4_BIND)

#define BPF_CGROUP_RUN_PROG_INET6_BIND(sk, uaddr)			       \
	BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET6_BIND)

#define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (cgroup_bpf_enabled && \
					    sk->sk_prot->pre_connect)

#define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr)			       \
	BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET4_CONNECT)

#define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr)			       \
	BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET6_CONNECT)

#define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr)		       \
	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_INET4_CONNECT, NULL)

#define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr)		       \
	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_INET6_CONNECT, NULL)

#define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx)		       \
	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP4_SENDMSG, t_ctx)

#define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx)		       \
	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP6_SENDMSG, t_ctx)

#define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr)			\
	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP4_RECVMSG, NULL)

#define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr)			\
	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP6_RECVMSG, NULL)

#define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops)				       \
({									       \
	int __ret = 0;							       \
	if (cgroup_bpf_enabled && (sock_ops)->sk) {	       \
		typeof(sk) __sk = sk_to_full_sk((sock_ops)->sk);	       \
		if (__sk && sk_fullsock(__sk))				       \
			__ret = __cgroup_bpf_run_filter_sock_ops(__sk,	       \
								 sock_ops,     \
							 BPF_CGROUP_SOCK_OPS); \
	}								       \
	__ret;								       \
})

#define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type, major, minor, access)	      \
({									      \
	int __ret = 0;							      \
	if (cgroup_bpf_enabled)						      \
		__ret = __cgroup_bpf_check_dev_permission(type, major, minor, \
							  access,	      \
							  BPF_CGROUP_DEVICE); \
									      \
	__ret;								      \
})


#define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos, nbuf)  \
({									       \
	int __ret = 0;							       \
	if (cgroup_bpf_enabled)						       \
		__ret = __cgroup_bpf_run_filter_sysctl(head, table, write,     \
						       buf, count, pos, nbuf,  \
						       BPF_CGROUP_SYSCTL);     \
	__ret;								       \
})

#define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen,   \
				       kernel_optval)			       \
({									       \
	int __ret = 0;							       \
	if (cgroup_bpf_enabled)						       \
		__ret = __cgroup_bpf_run_filter_setsockopt(sock, level,	       \
							   optname, optval,    \
							   optlen,	       \
							   kernel_optval);     \
	__ret;								       \
})

#define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen)			       \
({									       \
	int __ret = 0;							       \
	if (cgroup_bpf_enabled)						       \
		get_user(__ret, optlen);				       \
	__ret;								       \
})

#define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen,   \
				       max_optlen, retval)		       \
({									       \
	int __ret = retval;						       \
	if (cgroup_bpf_enabled)						       \
		__ret = __cgroup_bpf_run_filter_getsockopt(sock, level,	       \
							   optname, optval,    \
							   optlen, max_optlen, \
							   retval);	       \
	__ret;								       \
})

int cgroup_bpf_prog_attach(const union bpf_attr *attr,
			   enum bpf_prog_type ptype, struct bpf_prog *prog);
int cgroup_bpf_prog_detach(const union bpf_attr *attr,
			   enum bpf_prog_type ptype);
int cgroup_bpf_prog_query(const union bpf_attr *attr,
			  union bpf_attr __user *uattr);
#else

struct bpf_prog;
struct cgroup_bpf {};
static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; }
static inline void cgroup_bpf_offline(struct cgroup *cgrp) {}

static inline int cgroup_bpf_prog_attach(const union bpf_attr *attr,
					 enum bpf_prog_type ptype,
					 struct bpf_prog *prog)
{
	return -EINVAL;
}

static inline int cgroup_bpf_prog_detach(const union bpf_attr *attr,
					 enum bpf_prog_type ptype)
{
	return -EINVAL;
}

static inline int cgroup_bpf_prog_query(const union bpf_attr *attr,
					union bpf_attr __user *uattr)
{
	return -EINVAL;
}

static inline void bpf_cgroup_storage_set(
	struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE]) {}
static inline int bpf_cgroup_storage_assign(struct bpf_prog *prog,
					    struct bpf_map *map) { return 0; }
static inline void bpf_cgroup_storage_release(struct bpf_prog *prog,
					      struct bpf_map *map) {}
static inline struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(
	struct bpf_prog *prog, enum bpf_cgroup_storage_type stype) { return NULL; }
static inline void bpf_cgroup_storage_free(
	struct bpf_cgroup_storage *storage) {}
static inline int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key,
						 void *value) {
	return 0;
}
static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
					void *key, void *value, u64 flags) {
	return 0;
}

#define cgroup_bpf_enabled (0)
#define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (0)
#define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; })
#define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; })
#define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) ({ 0; })
#define BPF_CGROUP_RUN_PROG_INET4_BIND(sk, uaddr) ({ 0; })
#define BPF_CGROUP_RUN_PROG_INET6_BIND(sk, uaddr) ({ 0; })
#define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) ({ 0; })
#define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) ({ 0; })
#define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr) ({ 0; })
#define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr) ({ 0; })
#define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr) ({ 0; })
#define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr) ({ 0; })
#define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
#define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
#define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr) ({ 0; })
#define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) ({ 0; })
#define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; })
#define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type,major,minor,access) ({ 0; })
#define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos,nbuf) ({ 0; })
#define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; })
#define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \
				       optlen, max_optlen, retval) ({ retval; })
#define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
				       kernel_optval) ({ 0; })

#define for_each_cgroup_storage_type(stype) for (; false; )

#endif /* CONFIG_CGROUP_BPF */

#endif /* _BPF_CGROUP_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
30070984 DM	2	#ifndef _BPF_CGROUP_H
	3	#define _BPF_CGROUP_H
	4
8bad74f9	5	#include <linux/bpf.h>
f292b87d	6	#include <linux/errno.h>
30070984	7	#include <linux/jump_label.h>
aa0ad5b0	8	#include <linux/percpu.h>
4bfc0bb2	9	#include <linux/percpu-refcount.h>
de9cbbaa	10	#include <linux/rbtree.h>
30070984 DM	11	#include <uapi/linux/bpf.h>
	12
	13	struct sock;
4fbac77d	14	struct sockaddr;
30070984 DM	15	struct cgroup;
30070984 DM	16	struct sk_buff;
de9cbbaa RG	17	struct bpf_map;
de9cbbaa RG	18	struct bpf_prog;
40304b2a	19	struct bpf_sock_ops_kern;
de9cbbaa	20	struct bpf_cgroup_storage;
7b146ceb AI	21	struct ctl_table;
7b146ceb AI	22	struct ctl_table_header;
30070984 DM	23
	24	#ifdef CONFIG_CGROUP_BPF
	25
	26	extern struct static_key_false cgroup_bpf_enabled_key;
	27	#define cgroup_bpf_enabled static_branch_unlikely(&cgroup_bpf_enabled_key)
	28
f294b37e RG	29	DECLARE_PER_CPU(struct bpf_cgroup_storage*,
f294b37e RG	30	bpf_cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE]);
8bad74f9 RG	31
	32	#define for_each_cgroup_storage_type(stype) \
	33	for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)
aa0ad5b0	34
de9cbbaa RG	35	struct bpf_cgroup_storage_map;
	36
	37	struct bpf_storage_buffer {
	38	struct rcu_head rcu;
	39	char data[0];
	40	};
	41
	42	struct bpf_cgroup_storage {
b741f163 RG	43	union {
	44	struct bpf_storage_buffer *buf;
	45	void __percpu *percpu_buf;
	46	};
de9cbbaa RG	47	struct bpf_cgroup_storage_map *map;
	48	struct bpf_cgroup_storage_key key;
	49	struct list_head list;
	50	struct rb_node node;
	51	struct rcu_head rcu;
	52	};
	53
324bda9e AS	54	struct bpf_prog_list {
	55	struct list_head node;
	56	struct bpf_prog *prog;
8bad74f9	57	struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE];
324bda9e AS	58	};
	59
	60	struct bpf_prog_array;
	61
30070984	62	struct cgroup_bpf {
324bda9e AS	63	/* array of effective progs in this cgroup */
	64	struct bpf_prog_array __rcu *effective[MAX_BPF_ATTACH_TYPE];
	65
	66	/* attached progs to this cgroup and attach flags
	67	* when flags == 0 or BPF_F_ALLOW_OVERRIDE the progs list will
	68	* have either zero or one element
	69	* when BPF_F_ALLOW_MULTI the list can have up to BPF_CGROUP_MAX_PROGS
30070984	70	*/
324bda9e AS	71	struct list_head progs[MAX_BPF_ATTACH_TYPE];
	72	u32 flags[MAX_BPF_ATTACH_TYPE];
	73
	74	/* temp storage for effective prog array used by prog_attach/detach */
dbcc1ba2	75	struct bpf_prog_array *inactive;
4bfc0bb2 RG	76
	77	/* reference counter used to detach bpf programs after cgroup removal */
	78	struct percpu_ref refcnt;
	79
	80	/* cgroup_bpf is released using a work queue */
	81	struct work_struct release_work;
30070984 DM	82	};
30070984 DM	83
324bda9e	84	int cgroup_bpf_inherit(struct cgroup *cgrp);
4bfc0bb2	85	void cgroup_bpf_offline(struct cgroup *cgrp);
30070984	86
324bda9e AS	87	int __cgroup_bpf_attach(struct cgroup cgrp, struct bpf_prog prog,
	88	enum bpf_attach_type type, u32 flags);
	89	int __cgroup_bpf_detach(struct cgroup cgrp, struct bpf_prog prog,
1832f4ef	90	enum bpf_attach_type type);
468e2f64 AS	91	int __cgroup_bpf_query(struct cgroup cgrp, const union bpf_attr attr,
468e2f64 AS	92	union bpf_attr __user *uattr);
30070984	93
324bda9e AS	94	/* Wrapper for __cgroup_bpf_() protected by cgroup_mutex /
	95	int cgroup_bpf_attach(struct cgroup cgrp, struct bpf_prog prog,
	96	enum bpf_attach_type type, u32 flags);
	97	int cgroup_bpf_detach(struct cgroup cgrp, struct bpf_prog prog,
	98	enum bpf_attach_type type, u32 flags);
468e2f64 AS	99	int cgroup_bpf_query(struct cgroup cgrp, const union bpf_attr attr,
468e2f64 AS	100	union bpf_attr __user *uattr);
30070984	101
b2cd1257 DA	102	int __cgroup_bpf_run_filter_skb(struct sock *sk,
	103	struct sk_buff *skb,
	104	enum bpf_attach_type type);
	105
61023658 DA	106	int __cgroup_bpf_run_filter_sk(struct sock *sk,
	107	enum bpf_attach_type type);
	108
4fbac77d AI	109	int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
4fbac77d AI	110	struct sockaddr *uaddr,
1cedee13 AI	111	enum bpf_attach_type type,
1cedee13 AI	112	void *t_ctx);
4fbac77d	113
40304b2a LB	114	int __cgroup_bpf_run_filter_sock_ops(struct sock *sk,
	115	struct bpf_sock_ops_kern *sock_ops,
	116	enum bpf_attach_type type);
	117
ebc614f6 RG	118	int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
	119	short access, enum bpf_attach_type type);
	120
7b146ceb AI	121	int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
7b146ceb AI	122	struct ctl_table *table, int write,
4e63acdf	123	void __user buf, size_t pcount,
e1550bfe AI	124	loff_t ppos, void *new_buf,
e1550bfe AI	125	enum bpf_attach_type type);
7b146ceb	126
0d01da6a SF	127	int __cgroup_bpf_run_filter_setsockopt(struct sock sock, int level,
	128	int optname, char __user optval,
	129	int optlen, char *kernel_optval);
	130	int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
	131	int optname, char __user *optval,
	132	int __user *optlen, int max_optlen,
	133	int retval);
	134
8bad74f9 RG	135	static inline enum bpf_cgroup_storage_type cgroup_storage_type(
8bad74f9 RG	136	struct bpf_map *map)
aa0ad5b0	137	{
b741f163 RG	138	if (map->map_type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE)
	139	return BPF_CGROUP_STORAGE_PERCPU;
	140
8bad74f9 RG	141	return BPF_CGROUP_STORAGE_SHARED;
	142	}
	143
	144	static inline void bpf_cgroup_storage_set(struct bpf_cgroup_storage
	145	*storage[MAX_BPF_CGROUP_STORAGE_TYPE])
	146	{
	147	enum bpf_cgroup_storage_type stype;
aa0ad5b0	148
f294b37e RG	149	for_each_cgroup_storage_type(stype)
f294b37e RG	150	this_cpu_write(bpf_cgroup_storage[stype], storage[stype]);
aa0ad5b0 RG	151	}
aa0ad5b0 RG	152
8bad74f9 RG	153	struct bpf_cgroup_storage bpf_cgroup_storage_alloc(struct bpf_prog prog,
8bad74f9 RG	154	enum bpf_cgroup_storage_type stype);
de9cbbaa RG	155	void bpf_cgroup_storage_free(struct bpf_cgroup_storage *storage);
	156	void bpf_cgroup_storage_link(struct bpf_cgroup_storage *storage,
	157	struct cgroup *cgroup,
	158	enum bpf_attach_type type);
	159	void bpf_cgroup_storage_unlink(struct bpf_cgroup_storage *storage);
	160	int bpf_cgroup_storage_assign(struct bpf_prog prog, struct bpf_map map);
	161	void bpf_cgroup_storage_release(struct bpf_prog prog, struct bpf_map map);
	162
b741f163 RG	163	int bpf_percpu_cgroup_storage_copy(struct bpf_map map, void key, void *value);
	164	int bpf_percpu_cgroup_storage_update(struct bpf_map map, void key,
	165	void *value, u64 flags);
	166
b2cd1257 DA	167	/* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
	168	#define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb) \
	169	({ \
	170	int __ret = 0; \
	171	if (cgroup_bpf_enabled) \
	172	__ret = __cgroup_bpf_run_filter_skb(sk, skb, \
	173	BPF_CGROUP_INET_INGRESS); \
	174	\
	175	__ret; \
30070984 DM	176	})
30070984 DM	177
b2cd1257 DA	178	#define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb) \
	179	({ \
	180	int __ret = 0; \
	181	if (cgroup_bpf_enabled && sk && sk == skb->sk) { \
	182	typeof(sk) __sk = sk_to_full_sk(sk); \
	183	if (sk_fullsock(__sk)) \
	184	__ret = __cgroup_bpf_run_filter_skb(__sk, skb, \
	185	BPF_CGROUP_INET_EGRESS); \
	186	} \
	187	__ret; \
30070984 DM	188	})
30070984 DM	189
aac3fc32	190	#define BPF_CGROUP_RUN_SK_PROG(sk, type) \
61023658 DA	191	({ \
61023658 DA	192	int __ret = 0; \
ee07862f	193	if (cgroup_bpf_enabled) { \
aac3fc32	194	__ret = __cgroup_bpf_run_filter_sk(sk, type); \
61023658 DA	195	} \
	196	__ret; \
	197	})
	198
aac3fc32 AI	199	#define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) \
	200	BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET_SOCK_CREATE)
	201
	202	#define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) \
	203	BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET4_POST_BIND)
	204
	205	#define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) \
	206	BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET6_POST_BIND)
	207
4fbac77d AI	208	#define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, type) \
	209	({ \
	210	int __ret = 0; \
	211	if (cgroup_bpf_enabled) \
1cedee13 AI	212	__ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type, \
1cedee13 AI	213	NULL); \
4fbac77d AI	214	__ret; \
	215	})
	216
1cedee13	217	#define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, type, t_ctx) \
d74bad4e AI	218	({ \
	219	int __ret = 0; \
	220	if (cgroup_bpf_enabled) { \
	221	lock_sock(sk); \
1cedee13 AI	222	__ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type, \
1cedee13 AI	223	t_ctx); \
d74bad4e AI	224	release_sock(sk); \
	225	} \
	226	__ret; \
	227	})
	228
4fbac77d AI	229	#define BPF_CGROUP_RUN_PROG_INET4_BIND(sk, uaddr) \
	230	BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET4_BIND)
	231
	232	#define BPF_CGROUP_RUN_PROG_INET6_BIND(sk, uaddr) \
	233	BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET6_BIND)
	234
d74bad4e AI	235	#define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (cgroup_bpf_enabled && \
	236	sk->sk_prot->pre_connect)
	237
	238	#define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr) \
	239	BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET4_CONNECT)
	240
	241	#define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr) \
	242	BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET6_CONNECT)
	243
	244	#define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr) \
1cedee13	245	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_INET4_CONNECT, NULL)
d74bad4e AI	246
d74bad4e AI	247	#define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr) \
1cedee13 AI	248	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_INET6_CONNECT, NULL)
	249
	250	#define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx) \
	251	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP4_SENDMSG, t_ctx)
	252
	253	#define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx) \
	254	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP6_SENDMSG, t_ctx)
d74bad4e	255
983695fa DB	256	#define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr) \
	257	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP4_RECVMSG, NULL)
	258
	259	#define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) \
	260	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP6_RECVMSG, NULL)
	261
40304b2a LB	262	#define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) \
	263	({ \
	264	int __ret = 0; \
	265	if (cgroup_bpf_enabled && (sock_ops)->sk) { \
	266	typeof(sk) __sk = sk_to_full_sk((sock_ops)->sk); \
df39a9f1	267	if (__sk && sk_fullsock(__sk)) \
40304b2a LB	268	__ret = __cgroup_bpf_run_filter_sock_ops(__sk, \
	269	sock_ops, \
	270	BPF_CGROUP_SOCK_OPS); \
	271	} \
	272	__ret; \
	273	})
ebc614f6 RG	274
	275	#define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type, major, minor, access) \
	276	({ \
	277	int __ret = 0; \
	278	if (cgroup_bpf_enabled) \
	279	__ret = __cgroup_bpf_check_dev_permission(type, major, minor, \
	280	access, \
	281	BPF_CGROUP_DEVICE); \
	282	\
	283	__ret; \
	284	})
7b146ceb AI	285
7b146ceb AI	286
e1550bfe	287	#define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos, nbuf) \
7b146ceb AI	288	({ \
	289	int __ret = 0; \
	290	if (cgroup_bpf_enabled) \
	291	__ret = __cgroup_bpf_run_filter_sysctl(head, table, write, \
e1550bfe	292	buf, count, pos, nbuf, \
7b146ceb AI	293	BPF_CGROUP_SYSCTL); \
	294	__ret; \
	295	})
	296
0d01da6a SF	297	#define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
	298	kernel_optval) \
	299	({ \
	300	int __ret = 0; \
	301	if (cgroup_bpf_enabled) \
	302	__ret = __cgroup_bpf_run_filter_setsockopt(sock, level, \
	303	optname, optval, \
	304	optlen, \
	305	kernel_optval); \
	306	__ret; \
	307	})
	308
	309	#define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) \
	310	({ \
	311	int __ret = 0; \
	312	if (cgroup_bpf_enabled) \
	313	get_user(__ret, optlen); \
	314	__ret; \
	315	})
	316
	317	#define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen, \
	318	max_optlen, retval) \
	319	({ \
	320	int __ret = retval; \
	321	if (cgroup_bpf_enabled) \
	322	__ret = __cgroup_bpf_run_filter_getsockopt(sock, level, \
	323	optname, optval, \
	324	optlen, max_optlen, \
	325	retval); \
	326	__ret; \
	327	})
	328
fdb5c453 SY	329	int cgroup_bpf_prog_attach(const union bpf_attr *attr,
	330	enum bpf_prog_type ptype, struct bpf_prog *prog);
	331	int cgroup_bpf_prog_detach(const union bpf_attr *attr,
	332	enum bpf_prog_type ptype);
	333	int cgroup_bpf_prog_query(const union bpf_attr *attr,
	334	union bpf_attr __user *uattr);
30070984 DM	335	#else
30070984 DM	336
fdb5c453	337	struct bpf_prog;
30070984	338	struct cgroup_bpf {};
324bda9e	339	static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; }
4bfc0bb2	340	static inline void cgroup_bpf_offline(struct cgroup *cgrp) {}
30070984	341
fdb5c453 SY	342	static inline int cgroup_bpf_prog_attach(const union bpf_attr *attr,
	343	enum bpf_prog_type ptype,
	344	struct bpf_prog *prog)
	345	{
	346	return -EINVAL;
	347	}
	348
	349	static inline int cgroup_bpf_prog_detach(const union bpf_attr *attr,
	350	enum bpf_prog_type ptype)
	351	{
	352	return -EINVAL;
	353	}
	354
	355	static inline int cgroup_bpf_prog_query(const union bpf_attr *attr,
	356	union bpf_attr __user *uattr)
	357	{
	358	return -EINVAL;
	359	}
	360
8bad74f9 RG	361	static inline void bpf_cgroup_storage_set(
8bad74f9 RG	362	struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE]) {}
de9cbbaa RG	363	static inline int bpf_cgroup_storage_assign(struct bpf_prog *prog,
	364	struct bpf_map *map) { return 0; }
	365	static inline void bpf_cgroup_storage_release(struct bpf_prog *prog,
	366	struct bpf_map *map) {}
	367	static inline struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(
71b91a50	368	struct bpf_prog *prog, enum bpf_cgroup_storage_type stype) { return NULL; }
de9cbbaa RG	369	static inline void bpf_cgroup_storage_free(
de9cbbaa RG	370	struct bpf_cgroup_storage *storage) {}
b741f163 RG	371	static inline int bpf_percpu_cgroup_storage_copy(struct bpf_map map, void key,
	372	void *value) {
	373	return 0;
	374	}
	375	static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
	376	void key, void value, u64 flags) {
	377	return 0;
	378	}
de9cbbaa	379
13193b0f	380	#define cgroup_bpf_enabled (0)
d74bad4e	381	#define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (0)
30070984 DM	382	#define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; })
30070984 DM	383	#define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; })
61023658	384	#define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) ({ 0; })
4fbac77d AI	385	#define BPF_CGROUP_RUN_PROG_INET4_BIND(sk, uaddr) ({ 0; })
4fbac77d AI	386	#define BPF_CGROUP_RUN_PROG_INET6_BIND(sk, uaddr) ({ 0; })
aac3fc32 AI	387	#define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) ({ 0; })
aac3fc32 AI	388	#define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) ({ 0; })
d74bad4e AI	389	#define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr) ({ 0; })
	390	#define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr) ({ 0; })
	391	#define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr) ({ 0; })
	392	#define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr) ({ 0; })
1cedee13 AI	393	#define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
1cedee13 AI	394	#define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
983695fa DB	395	#define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr) ({ 0; })
983695fa DB	396	#define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) ({ 0; })
40304b2a	397	#define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; })
ebc614f6	398	#define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type,major,minor,access) ({ 0; })
e1550bfe	399	#define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos,nbuf) ({ 0; })
0d01da6a SF	400	#define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; })
	401	#define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \
	402	optlen, max_optlen, retval) ({ retval; })
	403	#define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
	404	kernel_optval) ({ 0; })
30070984	405
8bad74f9 RG	406	#define for_each_cgroup_storage_type(stype) for (; false; )
8bad74f9 RG	407
30070984 DM	408	#endif /* CONFIG_CGROUP_BPF */
	409
	410	#endif /* _BPF_CGROUP_H */