#ifndef __BPF_EXPERIMENTAL__
#define __BPF_EXPERIMENTAL__
#include <vmlinux.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_core_read.h>
#define __contains(name, node) __attribute__((btf_decl_tag("contains:" #name ":" #node )))
/* Description
* Allocates an object of the type represented by ' local_type_id ' in
* program BTF . User may use the bpf_core_type_id_local macro to pass the
* type ID of a struct in program BTF .
*
* The ' local_type_id ' parameter must be a known constant .
* The ' meta ' parameter is rewritten by the verifier , no need for BPF
* program to set it .
* Returns
* A pointer to an object of the type corresponding to the passed in
* ' local_type_id ' , or NULL on failure .
*/
extern void *bpf_obj_new_impl(__u64 local_type_id, void *meta) __ksym;
/* Convenience macro to wrap over bpf_obj_new_impl */
#define bpf_obj_new(type) ((type *)bpf_obj_new_impl(bpf_core_type_id_local(type), NULL))
/* Description
* Free an allocated object . All fields of the object that require
* destruction will be destructed before the storage is freed .
*
* The ' meta ' parameter is rewritten by the verifier , no need for BPF
* program to set it .
* Returns
* Void .
*/
extern void bpf_obj_drop_impl(void *kptr, void *meta) __ksym;
/* Convenience macro to wrap over bpf_obj_drop_impl */
#define bpf_obj_drop(kptr) bpf_obj_drop_impl(kptr, NULL)
/* Description
* Increment the refcount on a refcounted local kptr , turning the
* non - owning reference input into an owning reference in the process .
*
* The ' meta ' parameter is rewritten by the verifier , no need for BPF
* program to set it .
* Returns
* An owning reference to the object pointed to by ' kptr '
*/
extern void *bpf_refcount_acquire_impl(void *kptr, void *meta) __ksym;
/* Convenience macro to wrap over bpf_refcount_acquire_impl */
#define bpf_refcount_acquire(kptr) bpf_refcount_acquire_impl(kptr, NULL)
/* Description
* Add a new entry to the beginning of the BPF linked list .
*
* The ' meta ' and ' off ' parameters are rewritten by the verifier , no need
* for BPF programs to set them
* Returns
* 0 if the node was successfully added
* - EINVAL if the node wasn ' t added because it ' s already in a list
*/
extern int bpf_list_push_front_impl(struct bpf_list_head *head,
struct bpf_list_node *node,
void *meta, __u64 off) __ksym;
/* Convenience macro to wrap over bpf_list_push_front_impl */
#define bpf_list_push_front(head, node) bpf_list_push_front_impl(head, node, NULL, 0 )
/* Description
* Add a new entry to the end of the BPF linked list .
*
* The ' meta ' and ' off ' parameters are rewritten by the verifier , no need
* for BPF programs to set them
* Returns
* 0 if the node was successfully added
* - EINVAL if the node wasn ' t added because it ' s already in a list
*/
extern int bpf_list_push_back_impl(struct bpf_list_head *head,
struct bpf_list_node *node,
void *meta, __u64 off) __ksym;
/* Convenience macro to wrap over bpf_list_push_back_impl */
#define bpf_list_push_back(head, node) bpf_list_push_back_impl(head, node, NULL, 0 )
/* Description
* Remove the entry at the beginning of the BPF linked list .
* Returns
* Pointer to bpf_list_node of deleted entry , or NULL if list is empty .
*/
extern struct bpf_list_node *bpf_list_pop_front(struct bpf_list_head *head) __ksym;
/* Description
* Remove the entry at the end of the BPF linked list .
* Returns
* Pointer to bpf_list_node of deleted entry , or NULL if list is empty .
*/
extern struct bpf_list_node *bpf_list_pop_back(struct bpf_list_head *head) __ksym;
/* Description
* Remove ' node ' from rbtree with root ' root '
* Returns
* Pointer to the removed node , or NULL if ' root ' didn ' t contain ' node '
*/
extern struct bpf_rb_node *bpf_rbtree_remove(struct bpf_rb_root *root,
struct bpf_rb_node *node) __ksym;
/* Description
* Add ' node ' to rbtree with root ' root ' using comparator ' less '
*
* The ' meta ' and ' off ' parameters are rewritten by the verifier , no need
* for BPF programs to set them
* Returns
* 0 if the node was successfully added
* - EINVAL if the node wasn ' t added because it ' s already in a tree
*/
extern int bpf_rbtree_add_impl(struct bpf_rb_root *root, struct bpf_rb_node *node,
bool (less)(struct bpf_rb_node *a, const struct bpf_rb_node *b),
void *meta, __u64 off) __ksym;
/* Convenience macro to wrap over bpf_rbtree_add_impl */
#define bpf_rbtree_add(head, node, less) bpf_rbtree_add_impl(head, node, less, NULL, 0 )
/* Description
* Return the first ( leftmost ) node in input tree
* Returns
* Pointer to the node , which is _ not_ removed from the tree . If the tree
* contains no nodes , returns NULL .
*/
extern struct bpf_rb_node *bpf_rbtree_first(struct bpf_rb_root *root) __ksym;
/* Description
* Allocates a percpu object of the type represented by ' local_type_id ' in
* program BTF . User may use the bpf_core_type_id_local macro to pass the
* type ID of a struct in program BTF .
*
* The ' local_type_id ' parameter must be a known constant .
* The ' meta ' parameter is rewritten by the verifier , no need for BPF
* program to set it .
* Returns
* A pointer to a percpu object of the type corresponding to the passed in
* ' local_type_id ' , or NULL on failure .
*/
extern void *bpf_percpu_obj_new_impl(__u64 local_type_id, void *meta) __ksym;
/* Convenience macro to wrap over bpf_percpu_obj_new_impl */
#define bpf_percpu_obj_new(type) ((type __percpu_kptr *)bpf_percpu_obj_new_impl(bpf_core_type_id_local(type), NULL))
/* Description
* Free an allocated percpu object . All fields of the object that require
* destruction will be destructed before the storage is freed .
*
* The ' meta ' parameter is rewritten by the verifier , no need for BPF
* program to set it .
* Returns
* Void .
*/
extern void bpf_percpu_obj_drop_impl(void *kptr, void *meta) __ksym;
struct bpf_iter_task_vma;
extern int bpf_iter_task_vma_new(struct bpf_iter_task_vma *it,
struct task_struct *task,
__u64 addr) __ksym;
extern struct vm_area_struct *bpf_iter_task_vma_next(struct bpf_iter_task_vma *it) __ksym;
extern void bpf_iter_task_vma_destroy(struct bpf_iter_task_vma *it) __ksym;
/* Convenience macro to wrap over bpf_obj_drop_impl */
#define bpf_percpu_obj_drop(kptr) bpf_percpu_obj_drop_impl(kptr, NULL)
/* Description
* Throw a BPF exception from the program , immediately terminating its
* execution and unwinding the stack . The supplied ' cookie ' parameter
* will be the return value of the program when an exception is thrown ,
* and the default exception callback is used . Otherwise , if an exception
* callback is set using the ' _ _ exception_cb ( callback ) ' declaration tag
* on the main program , the ' cookie ' parameter will be the callback ' s only
* input argument .
*
* Thus , in case of default exception callback , ' cookie ' is subjected to
* constraints on the program ' s return value ( as with R0 on exit ) .
* Otherwise , the return value of the marked exception callback will be
* subjected to the same checks .
*
* Note that throwing an exception with lingering resources ( locks ,
* references , etc . ) will lead to a verification error .
*
* Note that callbacks * cannot * call this helper .
* Returns
* Never .
* Throws
* An exception with the specified ' cookie ' value .
*/
extern void bpf_throw(u64 cookie) __ksym;
/* Description
* Acquire a reference on the exe_file member field belonging to the
* mm_struct that is nested within the supplied task_struct . The supplied
* task_struct must be trusted / referenced .
* Returns
* A referenced file pointer pointing to the exe_file member field of the
* mm_struct nested in the supplied task_struct , or NULL .
*/
extern struct file *bpf_get_task_exe_file(struct task_struct *task) __ksym;
/* Description
* Release a reference on the supplied file . The supplied file must be
* acquired .
*/
extern void bpf_put_file(struct file *file) __ksym;
/* Description
* Resolve a pathname for the supplied path and store it in the supplied
* buffer . The supplied path must be trusted / referenced .
* Returns
* A positive integer corresponding to the length of the resolved pathname ,
* including the NULL termination character , stored in the supplied
* buffer . On error , a negative integer is returned .
*/
extern int bpf_path_d_path(struct path *path, char *buf, size_t buf__sz) __ksym;
/* This macro must be used to mark the exception callback corresponding to the
* main program . For example :
*
* int exception_cb ( u64 cookie ) {
* return cookie ;
* }
*
* SEC ( " tc " )
* _ _ exception_cb ( exception_cb )
* int main_prog ( struct _ _ sk_buff * ctx ) {
* . . .
* return TC_ACT_OK ;
* }
*
* Here , exception callback for the main program will be ' exception_cb ' . Note
* that this attribute can only be used once , and multiple exception callbacks
* specified for the main program will lead to verification error .
*/
#define __exception_cb(name) __attribute__((btf_decl_tag("exception_callback:" #name )))
#define __bpf_assert_signed(x) _Generic((x), \
unsigned long : 0 , \
unsigned long long : 0 , \
signed long : 1 , \
signed long long : 1 \
)
#define __bpf_assert_check(LHS, op, RHS) \
_Static_assert(sizeof (&(LHS)), "1st argument must be an lvalue expression" ); \
_Static_assert(sizeof (LHS) == 8 , "Only 8-byte integers are supported\n" ); \
_Static_assert(__builtin_constant_p(__bpf_assert_signed(LHS)), "internal static assert" ); \
_Static_assert(__builtin_constant_p((RHS)), "2nd argument must be a constant expression" )
#define __bpf_assert(LHS, op, cons, RHS, VAL) \
({ \
(void )bpf_throw; \
asm volatile ("if %[lhs] " op " %[rhs] goto +2; r1 = %[value]; call bpf_throw" \
: : [lhs] "r" (LHS), [rhs] cons(RHS), [value] "ri" (VAL) : ); \
})
#define __bpf_assert_op_sign(LHS, op, cons, RHS, VAL, supp_sign) \
({ \
__bpf_assert_check(LHS, op, RHS); \
if (__bpf_assert_signed(LHS) && !(supp_sign)) \
__bpf_assert(LHS, "s" #op , cons, RHS, VAL); \
else \
__bpf_assert(LHS, #op , cons, RHS, VAL); \
})
#define __bpf_assert_op(LHS, op, RHS, VAL, supp_sign) \
({ \
if (sizeof (typeof(RHS)) == 8 ) { \
const typeof(RHS) rhs_var = (RHS); \
__bpf_assert_op_sign(LHS, op, "r" , rhs_var, VAL, supp_sign); \
} else { \
__bpf_assert_op_sign(LHS, op, "i" , RHS, VAL, supp_sign); \
} \
})
#define __cmp_cannot_be_signed(x) \
__builtin_strcmp(#x , "==" ) == 0 || __builtin_strcmp(#x , "!=" ) == 0 || \
__builtin_strcmp(#x , "&" ) == 0
#define __is_signed_type(type) (((type)(-1 )) < (type)1 )
#define __bpf_cmp(LHS, OP, PRED, RHS, DEFAULT ) \
({ \
__label__ l_true; \
bool ret = DEFAULT ; \
asm volatile goto ("if %[lhs] " OP " %[rhs] goto %l[l_true]" \
:: [lhs] "r" ((short )LHS), [rhs] PRED (RHS) :: l_true); \
ret = !DEFAULT ; \
l_true: \
ret; \
})
/* C type conversions coupled with comparison operator are tricky.
* Make sure BPF program is compiled with - Wsign - compare then
* _ _ lhs OP _ _ rhs below will catch the mistake .
* Be aware that we check only _ _ lhs to figure out the sign of compare .
*/
#define _bpf_cmp(LHS, OP, RHS, UNLIKELY) \
({ \
typeof(LHS) __lhs = (LHS); \
typeof(RHS) __rhs = (RHS); \
bool ret; \
_Static_assert(sizeof (&(LHS)), "1st argument must be an lvalue expression" ); \
(void )(__lhs OP __rhs); \
if (__cmp_cannot_be_signed(OP) || !__is_signed_type(typeof(__lhs))) { \
if (sizeof (__rhs) == 8 ) \
/* "i" will truncate 64-bit constant into s32, \
* so we have to use extra register via " r " . \
*/ \
ret = __bpf_cmp(__lhs, #OP , "r" , __rhs, UNLIKELY); \
else \
ret = __bpf_cmp(__lhs, #OP , "ri" , __rhs, UNLIKELY); \
} else { \
if (sizeof (__rhs) == 8 ) \
ret = __bpf_cmp(__lhs, "s" #OP , "r" , __rhs, UNLIKELY); \
else \
ret = __bpf_cmp(__lhs, "s" #OP , "ri" , __rhs, UNLIKELY); \
} \
ret; \
})
#ifndef bpf_cmp_unlikely
#define bpf_cmp_unlikely(LHS, OP, RHS) _bpf_cmp(LHS, OP, RHS, true )
#endif
#ifndef bpf_cmp_likely
#define bpf_cmp_likely(LHS, OP, RHS) \
({ \
bool ret = 0 ; \
if (__builtin_strcmp(#OP , "==" ) == 0 ) \
ret = _bpf_cmp(LHS, !=, RHS, false ); \
else if (__builtin_strcmp(#OP , "!=" ) == 0 ) \
ret = _bpf_cmp(LHS, ==, RHS, false ); \
else if (__builtin_strcmp(#OP , "<=" ) == 0 ) \
ret = _bpf_cmp(LHS, >, RHS, false ); \
else if (__builtin_strcmp(#OP , "<" ) == 0 ) \
ret = _bpf_cmp(LHS, >=, RHS, false ); \
else if (__builtin_strcmp(#OP , ">" ) == 0 ) \
ret = _bpf_cmp(LHS, <=, RHS, false ); \
else if (__builtin_strcmp(#OP , ">=" ) == 0 ) \
ret = _bpf_cmp(LHS, <, RHS, false ); \
else \
asm volatile ("r0 " #OP " invalid compare" ); \
ret; \
})
#endif
/*
* Note that cond_break can only be portably used in the body of a breakable
* construct , whereas can_loop can be used anywhere .
*/
#ifdef __BPF_FEATURE_MAY_GOTO
#define can_loop \
({ __label__ l_break, l_continue; \
bool ret = true ; \
asm volatile goto ("may_goto %l[l_break]" \
:::: l_break); \
goto l_continue; \
l_break: ret = false ; \
l_continue:; \
ret; \
})
#define __cond_break(expr) \
({ __label__ l_break, l_continue; \
asm volatile goto ("may_goto %l[l_break]" \
:::: l_break); \
goto l_continue; \
l_break: expr; \
l_continue:; \
})
#else
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define can_loop \
({ __label__ l_break, l_continue; \
bool ret = true ; \
asm volatile goto ("1:.byte 0xe5; \
.byte 0 ; \
.long ((%l[l_break] - 1 b - 8 ) / 8 ) & 0 xffff; \
.short 0 " \
:::: l_break); \
goto l_continue; \
l_break: ret = false ; \
l_continue:; \
ret; \
})
#define __cond_break(expr) \
({ __label__ l_break, l_continue; \
asm volatile goto ("1:.byte 0xe5; \
.byte 0 ; \
.long ((%l[l_break] - 1 b - 8 ) / 8 ) & 0 xffff; \
.short 0 " \
:::: l_break); \
goto l_continue; \
l_break: expr; \
l_continue:; \
})
#else
#define can_loop \
({ __label__ l_break, l_continue; \
bool ret = true ; \
asm volatile goto ("1:.byte 0xe5; \
.byte 0 ; \
.long (((%l[l_break] - 1 b - 8 ) / 8 ) & 0 xffff) << 16 ; \
.short 0 " \
:::: l_break); \
goto l_continue; \
l_break: ret = false ; \
l_continue:; \
ret; \
})
#define __cond_break(expr) \
({ __label__ l_break, l_continue; \
asm volatile goto ("1:.byte 0xe5; \
.byte 0 ; \
.long (((%l[l_break] - 1 b - 8 ) / 8 ) & 0 xffff) << 16 ; \
.short 0 " \
:::: l_break); \
goto l_continue; \
l_break: expr; \
l_continue:; \
})
#endif
#endif
#define cond_break __cond_break(break )
#define cond_break_label(label) __cond_break(goto label)
#ifndef bpf_nop_mov
#define bpf_nop_mov(var) \
asm volatile ("%[reg]=%[reg]" ::[reg]"r" ((short )var))
#endif
/* emit instruction:
* rX = rX . off = BPF_ADDR_SPACE_CAST . imm32 = ( dst_as < < 16 ) | src_as
*/
#ifndef bpf_addr_space_cast
#define bpf_addr_space_cast(var, dst_as, src_as)\
asm volatile (".byte 0xBF; \
.ifc %[reg], r0; \
.byte 0 x00; \
.endif; \
.ifc %[reg], r1; \
.byte 0 x11; \
.endif; \
.ifc %[reg], r2; \
.byte 0 x22; \
.endif; \
.ifc %[reg], r3; \
.byte 0 x33; \
.endif; \
.ifc %[reg], r4; \
.byte 0 x44; \
.endif; \
.ifc %[reg], r5; \
.byte 0 x55; \
.endif; \
.ifc %[reg], r6; \
.byte 0 x66; \
.endif; \
.ifc %[reg], r7; \
.byte 0 x77; \
.endif; \
.ifc %[reg], r8; \
.byte 0 x88; \
.endif; \
.ifc %[reg], r9; \
.byte 0 x99; \
.endif; \
.short %[off]; \
.long %[as]" \
: [reg]"+r" (var) \
: [off]"i" (BPF_ADDR_SPACE_CAST) \
, [as]"i" ((dst_as << 16 ) | src_as));
#endif
void bpf_preempt_disable(void ) __weak __ksym;
void bpf_preempt_enable(void ) __weak __ksym;
typedef struct {
} __bpf_preempt_t;
static inline __bpf_preempt_t __bpf_preempt_constructor(void )
{
__bpf_preempt_t ret = {};
bpf_preempt_disable();
return ret;
}
static inline void __bpf_preempt_destructor(__bpf_preempt_t *t)
{
bpf_preempt_enable();
}
#define bpf_guard_preempt() \
__bpf_preempt_t ___bpf_apply(preempt, __COUNTER__) \
__attribute__((__unused__, __cleanup__(__bpf_preempt_destructor))) = \
__bpf_preempt_constructor()
/* Description
* Assert that a conditional expression is true .
* Returns
* Void .
* Throws
* An exception with the value zero when the assertion fails .
*/
#define bpf_assert(cond) if (!(cond)) bpf_throw(0 );
/* Description
* Assert that a conditional expression is true .
* Returns
* Void .
* Throws
* An exception with the specified value when the assertion fails .
*/
#define bpf_assert_with(cond, value) if (!(cond)) bpf_throw(value);
/* Description
* Assert that LHS is in the range [ BEG , END ] ( inclusive of both ) . This
* statement updates the known bounds of LHS during verification . Note
* that both BEG and END must be constant values , and must fit within the
* data type of LHS .
* Returns
* Void .
* Throws
* An exception with the value zero when the assertion fails .
*/
#define bpf_assert_range(LHS, BEG, END) \
({ \
_Static_assert(BEG <= END, "BEG must be <= END" ); \
barrier_var(LHS); \
__bpf_assert_op(LHS, >=, BEG, 0 , false ); \
__bpf_assert_op(LHS, <=, END, 0 , false ); \
})
/* Description
* Assert that LHS is in the range [ BEG , END ] ( inclusive of both ) . This
* statement updates the known bounds of LHS during verification . Note
* that both BEG and END must be constant values , and must fit within the
* data type of LHS .
* Returns
* Void .
* Throws
* An exception with the specified value when the assertion fails .
*/
#define bpf_assert_range_with(LHS, BEG, END, value) \
({ \
_Static_assert(BEG <= END, "BEG must be <= END" ); \
barrier_var(LHS); \
__bpf_assert_op(LHS, >=, BEG, value, false ); \
__bpf_assert_op(LHS, <=, END, value, false ); \
})
struct bpf_iter_css_task;
struct cgroup_subsys_state;
extern int bpf_iter_css_task_new(struct bpf_iter_css_task *it,
struct cgroup_subsys_state *css, unsigned int flags) __weak __ksym;
extern struct task_struct *bpf_iter_css_task_next(struct bpf_iter_css_task *it) __weak __ksym;
extern void bpf_iter_css_task_destroy(struct bpf_iter_css_task *it) __weak __ksym;
struct bpf_iter_task;
extern int bpf_iter_task_new(struct bpf_iter_task *it,
struct task_struct *task, unsigned int flags) __weak __ksym;
extern struct task_struct *bpf_iter_task_next(struct bpf_iter_task *it) __weak __ksym;
extern void bpf_iter_task_destroy(struct bpf_iter_task *it) __weak __ksym;
struct bpf_iter_css;
extern int bpf_iter_css_new(struct bpf_iter_css *it,
struct cgroup_subsys_state *start, unsigned int flags) __weak __ksym;
extern struct cgroup_subsys_state *bpf_iter_css_next(struct bpf_iter_css *it) __weak __ksym;
extern void bpf_iter_css_destroy(struct bpf_iter_css *it) __weak __ksym;
extern int bpf_wq_init(struct bpf_wq *wq, void *p__map, unsigned int flags) __weak __ksym;
extern int bpf_wq_start(struct bpf_wq *wq, unsigned int flags) __weak __ksym;
extern int bpf_wq_set_callback_impl(struct bpf_wq *wq,
int (callback_fn)(void *map, int *key, void *value),
unsigned int flags__k, void *aux__ign) __ksym;
#define bpf_wq_set_callback(timer, cb, flags) \
bpf_wq_set_callback_impl(timer, cb, flags, NULL)
struct bpf_iter_kmem_cache;
extern int bpf_iter_kmem_cache_new(struct bpf_iter_kmem_cache *it) __weak __ksym;
extern struct kmem_cache *bpf_iter_kmem_cache_next(struct bpf_iter_kmem_cache *it) __weak __ksym;
extern void bpf_iter_kmem_cache_destroy(struct bpf_iter_kmem_cache *it) __weak __ksym;
struct bpf_iter_dmabuf;
extern int bpf_iter_dmabuf_new(struct bpf_iter_dmabuf *it) __weak __ksym;
extern struct dma_buf *bpf_iter_dmabuf_next(struct bpf_iter_dmabuf *it) __weak __ksym;
extern void bpf_iter_dmabuf_destroy(struct bpf_iter_dmabuf *it) __weak __ksym;
extern int bpf_cgroup_read_xattr(struct cgroup *cgroup, const char *name__str,
struct bpf_dynptr *value_p) __weak __ksym;
#endif
Messung V0.5 in Prozent C=93 H=87 G=89
¤ Diese beiden folgenden Angebotsgruppen bietet das Unternehmen0.15Angebot
(Wie Sie bei der Firma Beratungs- und Dienstleistungen beauftragen können 2026-10-12)
¤
*Eine klare Vorstellung vom Zielzustand