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-rw-r--r--include/linux/bpf.h250
1 files changed, 178 insertions, 72 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 520b238abd5a..e53ceee1df37 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -96,11 +96,11 @@ struct bpf_map_ops {
/* funcs callable from userspace and from eBPF programs */
void *(*map_lookup_elem)(struct bpf_map *map, void *key);
- int (*map_update_elem)(struct bpf_map *map, void *key, void *value, u64 flags);
- int (*map_delete_elem)(struct bpf_map *map, void *key);
- int (*map_push_elem)(struct bpf_map *map, void *value, u64 flags);
- int (*map_pop_elem)(struct bpf_map *map, void *value);
- int (*map_peek_elem)(struct bpf_map *map, void *value);
+ long (*map_update_elem)(struct bpf_map *map, void *key, void *value, u64 flags);
+ long (*map_delete_elem)(struct bpf_map *map, void *key);
+ long (*map_push_elem)(struct bpf_map *map, void *value, u64 flags);
+ long (*map_pop_elem)(struct bpf_map *map, void *value);
+ long (*map_peek_elem)(struct bpf_map *map, void *value);
void *(*map_lookup_percpu_elem)(struct bpf_map *map, void *key, u32 cpu);
/* funcs called by prog_array and perf_event_array map */
@@ -139,7 +139,7 @@ struct bpf_map_ops {
struct bpf_local_storage __rcu ** (*map_owner_storage_ptr)(void *owner);
/* Misc helpers.*/
- int (*map_redirect)(struct bpf_map *map, u64 key, u64 flags);
+ long (*map_redirect)(struct bpf_map *map, u64 key, u64 flags);
/* map_meta_equal must be implemented for maps that can be
* used as an inner map. It is a runtime check to ensure
@@ -157,10 +157,12 @@ struct bpf_map_ops {
int (*map_set_for_each_callback_args)(struct bpf_verifier_env *env,
struct bpf_func_state *caller,
struct bpf_func_state *callee);
- int (*map_for_each_callback)(struct bpf_map *map,
+ long (*map_for_each_callback)(struct bpf_map *map,
bpf_callback_t callback_fn,
void *callback_ctx, u64 flags);
+ u64 (*map_mem_usage)(const struct bpf_map *map);
+
/* BTF id of struct allocated by map_alloc */
int *map_btf_id;
@@ -185,11 +187,17 @@ enum btf_field_type {
BPF_RB_NODE = (1 << 7),
BPF_GRAPH_NODE_OR_ROOT = BPF_LIST_NODE | BPF_LIST_HEAD |
BPF_RB_NODE | BPF_RB_ROOT,
+ BPF_REFCOUNT = (1 << 8),
};
+typedef void (*btf_dtor_kfunc_t)(void *);
+
struct btf_field_kptr {
struct btf *btf;
struct module *module;
+ /* dtor used if btf_is_kernel(btf), otherwise the type is
+ * program-allocated, dtor is NULL, and __bpf_obj_drop_impl is used
+ */
btf_dtor_kfunc_t dtor;
u32 btf_id;
};
@@ -203,6 +211,7 @@ struct btf_field_graph_root {
struct btf_field {
u32 offset;
+ u32 size;
enum btf_field_type type;
union {
struct btf_field_kptr kptr;
@@ -215,15 +224,10 @@ struct btf_record {
u32 field_mask;
int spin_lock_off;
int timer_off;
+ int refcount_off;
struct btf_field fields[];
};
-struct btf_field_offs {
- u32 cnt;
- u32 field_off[BTF_FIELDS_MAX];
- u8 field_sz[BTF_FIELDS_MAX];
-};
-
struct bpf_map {
/* The first two cachelines with read-mostly members of which some
* are also accessed in fast-path (e.g. ops, max_entries).
@@ -250,7 +254,6 @@ struct bpf_map {
struct obj_cgroup *objcg;
#endif
char name[BPF_OBJ_NAME_LEN];
- struct btf_field_offs *field_offs;
/* The 3rd and 4th cacheline with misc members to avoid false sharing
* particularly with refcounting.
*/
@@ -292,6 +295,8 @@ static inline const char *btf_field_type_name(enum btf_field_type type)
return "bpf_rb_root";
case BPF_RB_NODE:
return "bpf_rb_node";
+ case BPF_REFCOUNT:
+ return "bpf_refcount";
default:
WARN_ON_ONCE(1);
return "unknown";
@@ -316,6 +321,8 @@ static inline u32 btf_field_type_size(enum btf_field_type type)
return sizeof(struct bpf_rb_root);
case BPF_RB_NODE:
return sizeof(struct bpf_rb_node);
+ case BPF_REFCOUNT:
+ return sizeof(struct bpf_refcount);
default:
WARN_ON_ONCE(1);
return 0;
@@ -340,12 +347,42 @@ static inline u32 btf_field_type_align(enum btf_field_type type)
return __alignof__(struct bpf_rb_root);
case BPF_RB_NODE:
return __alignof__(struct bpf_rb_node);
+ case BPF_REFCOUNT:
+ return __alignof__(struct bpf_refcount);
default:
WARN_ON_ONCE(1);
return 0;
}
}
+static inline void bpf_obj_init_field(const struct btf_field *field, void *addr)
+{
+ memset(addr, 0, field->size);
+
+ switch (field->type) {
+ case BPF_REFCOUNT:
+ refcount_set((refcount_t *)addr, 1);
+ break;
+ case BPF_RB_NODE:
+ RB_CLEAR_NODE((struct rb_node *)addr);
+ break;
+ case BPF_LIST_HEAD:
+ case BPF_LIST_NODE:
+ INIT_LIST_HEAD((struct list_head *)addr);
+ break;
+ case BPF_RB_ROOT:
+ /* RB_ROOT_CACHED 0-inits, no need to do anything after memset */
+ case BPF_SPIN_LOCK:
+ case BPF_TIMER:
+ case BPF_KPTR_UNREF:
+ case BPF_KPTR_REF:
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ return;
+ }
+}
+
static inline bool btf_record_has_field(const struct btf_record *rec, enum btf_field_type type)
{
if (IS_ERR_OR_NULL(rec))
@@ -353,14 +390,14 @@ static inline bool btf_record_has_field(const struct btf_record *rec, enum btf_f
return rec->field_mask & type;
}
-static inline void bpf_obj_init(const struct btf_field_offs *foffs, void *obj)
+static inline void bpf_obj_init(const struct btf_record *rec, void *obj)
{
int i;
- if (!foffs)
+ if (IS_ERR_OR_NULL(rec))
return;
- for (i = 0; i < foffs->cnt; i++)
- memset(obj + foffs->field_off[i], 0, foffs->field_sz[i]);
+ for (i = 0; i < rec->cnt; i++)
+ bpf_obj_init_field(&rec->fields[i], obj + rec->fields[i].offset);
}
/* 'dst' must be a temporary buffer and should not point to memory that is being
@@ -372,7 +409,7 @@ static inline void bpf_obj_init(const struct btf_field_offs *foffs, void *obj)
*/
static inline void check_and_init_map_value(struct bpf_map *map, void *dst)
{
- bpf_obj_init(map->field_offs, dst);
+ bpf_obj_init(map->record, dst);
}
/* memcpy that is used with 8-byte aligned pointers, power-of-8 size and
@@ -392,14 +429,14 @@ static inline void bpf_long_memcpy(void *dst, const void *src, u32 size)
}
/* copy everything but bpf_spin_lock, bpf_timer, and kptrs. There could be one of each. */
-static inline void bpf_obj_memcpy(struct btf_field_offs *foffs,
+static inline void bpf_obj_memcpy(struct btf_record *rec,
void *dst, void *src, u32 size,
bool long_memcpy)
{
u32 curr_off = 0;
int i;
- if (likely(!foffs)) {
+ if (IS_ERR_OR_NULL(rec)) {
if (long_memcpy)
bpf_long_memcpy(dst, src, round_up(size, 8));
else
@@ -407,49 +444,49 @@ static inline void bpf_obj_memcpy(struct btf_field_offs *foffs,
return;
}
- for (i = 0; i < foffs->cnt; i++) {
- u32 next_off = foffs->field_off[i];
+ for (i = 0; i < rec->cnt; i++) {
+ u32 next_off = rec->fields[i].offset;
u32 sz = next_off - curr_off;
memcpy(dst + curr_off, src + curr_off, sz);
- curr_off += foffs->field_sz[i] + sz;
+ curr_off += rec->fields[i].size + sz;
}
memcpy(dst + curr_off, src + curr_off, size - curr_off);
}
static inline void copy_map_value(struct bpf_map *map, void *dst, void *src)
{
- bpf_obj_memcpy(map->field_offs, dst, src, map->value_size, false);
+ bpf_obj_memcpy(map->record, dst, src, map->value_size, false);
}
static inline void copy_map_value_long(struct bpf_map *map, void *dst, void *src)
{
- bpf_obj_memcpy(map->field_offs, dst, src, map->value_size, true);
+ bpf_obj_memcpy(map->record, dst, src, map->value_size, true);
}
-static inline void bpf_obj_memzero(struct btf_field_offs *foffs, void *dst, u32 size)
+static inline void bpf_obj_memzero(struct btf_record *rec, void *dst, u32 size)
{
u32 curr_off = 0;
int i;
- if (likely(!foffs)) {
+ if (IS_ERR_OR_NULL(rec)) {
memset(dst, 0, size);
return;
}
- for (i = 0; i < foffs->cnt; i++) {
- u32 next_off = foffs->field_off[i];
+ for (i = 0; i < rec->cnt; i++) {
+ u32 next_off = rec->fields[i].offset;
u32 sz = next_off - curr_off;
memset(dst + curr_off, 0, sz);
- curr_off += foffs->field_sz[i] + sz;
+ curr_off += rec->fields[i].size + sz;
}
memset(dst + curr_off, 0, size - curr_off);
}
static inline void zero_map_value(struct bpf_map *map, void *dst)
{
- bpf_obj_memzero(map->field_offs, dst, map->value_size);
+ bpf_obj_memzero(map->record, dst, map->value_size);
}
void copy_map_value_locked(struct bpf_map *map, void *dst, void *src,
@@ -607,11 +644,18 @@ enum bpf_type_flag {
*/
NON_OWN_REF = BIT(14 + BPF_BASE_TYPE_BITS),
+ /* DYNPTR points to sk_buff */
+ DYNPTR_TYPE_SKB = BIT(15 + BPF_BASE_TYPE_BITS),
+
+ /* DYNPTR points to xdp_buff */
+ DYNPTR_TYPE_XDP = BIT(16 + BPF_BASE_TYPE_BITS),
+
__BPF_TYPE_FLAG_MAX,
__BPF_TYPE_LAST_FLAG = __BPF_TYPE_FLAG_MAX - 1,
};
-#define DYNPTR_TYPE_FLAG_MASK (DYNPTR_TYPE_LOCAL | DYNPTR_TYPE_RINGBUF)
+#define DYNPTR_TYPE_FLAG_MASK (DYNPTR_TYPE_LOCAL | DYNPTR_TYPE_RINGBUF | DYNPTR_TYPE_SKB \
+ | DYNPTR_TYPE_XDP)
/* Max number of base types. */
#define BPF_BASE_TYPE_LIMIT (1UL << BPF_BASE_TYPE_BITS)
@@ -879,8 +923,7 @@ struct bpf_verifier_ops {
struct bpf_prog *prog, u32 *target_size);
int (*btf_struct_access)(struct bpf_verifier_log *log,
const struct bpf_reg_state *reg,
- int off, int size, enum bpf_access_type atype,
- u32 *next_btf_id, enum bpf_type_flag *flag);
+ int off, int size);
};
struct bpf_prog_offload_ops {
@@ -1089,6 +1132,7 @@ struct bpf_trampoline {
struct bpf_attach_target_info {
struct btf_func_model fmodel;
long tgt_addr;
+ struct module *tgt_mod;
const char *tgt_name;
const struct btf_type *tgt_type;
};
@@ -1124,6 +1168,37 @@ static __always_inline __nocfi unsigned int bpf_dispatcher_nop_func(
return bpf_func(ctx, insnsi);
}
+/* the implementation of the opaque uapi struct bpf_dynptr */
+struct bpf_dynptr_kern {
+ void *data;
+ /* Size represents the number of usable bytes of dynptr data.
+ * If for example the offset is at 4 for a local dynptr whose data is
+ * of type u64, the number of usable bytes is 4.
+ *
+ * The upper 8 bits are reserved. It is as follows:
+ * Bits 0 - 23 = size
+ * Bits 24 - 30 = dynptr type
+ * Bit 31 = whether dynptr is read-only
+ */
+ u32 size;
+ u32 offset;
+} __aligned(8);
+
+enum bpf_dynptr_type {
+ BPF_DYNPTR_TYPE_INVALID,
+ /* Points to memory that is local to the bpf program */
+ BPF_DYNPTR_TYPE_LOCAL,
+ /* Underlying data is a ringbuf record */
+ BPF_DYNPTR_TYPE_RINGBUF,
+ /* Underlying data is a sk_buff */
+ BPF_DYNPTR_TYPE_SKB,
+ /* Underlying data is a xdp_buff */
+ BPF_DYNPTR_TYPE_XDP,
+};
+
+int bpf_dynptr_check_size(u32 size);
+u32 bpf_dynptr_get_size(const struct bpf_dynptr_kern *ptr);
+
#ifdef CONFIG_BPF_JIT
int bpf_trampoline_link_prog(struct bpf_tramp_link *link, struct bpf_trampoline *tr);
int bpf_trampoline_unlink_prog(struct bpf_tramp_link *link, struct bpf_trampoline *tr);
@@ -1361,6 +1436,7 @@ struct bpf_prog_aux {
* main prog always has linfo_idx == 0
*/
u32 linfo_idx;
+ struct module *mod;
u32 num_exentries;
struct exception_table_entry *extable;
union {
@@ -1429,6 +1505,8 @@ struct bpf_link_ops {
void (*show_fdinfo)(const struct bpf_link *link, struct seq_file *seq);
int (*fill_link_info)(const struct bpf_link *link,
struct bpf_link_info *info);
+ int (*update_map)(struct bpf_link *link, struct bpf_map *new_map,
+ struct bpf_map *old_map);
};
struct bpf_tramp_link {
@@ -1471,6 +1549,8 @@ struct bpf_struct_ops {
void *kdata, const void *udata);
int (*reg)(void *kdata);
void (*unreg)(void *kdata);
+ int (*update)(void *kdata, void *old_kdata);
+ int (*validate)(void *kdata);
const struct btf_type *type;
const struct btf_type *value_type;
const char *name;
@@ -1505,6 +1585,7 @@ static inline void bpf_module_put(const void *data, struct module *owner)
else
module_put(owner);
}
+int bpf_struct_ops_link_create(union bpf_attr *attr);
#ifdef CONFIG_NET
/* Define it here to avoid the use of forward declaration */
@@ -1545,6 +1626,11 @@ static inline int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map,
{
return -EINVAL;
}
+static inline int bpf_struct_ops_link_create(union bpf_attr *attr)
+{
+ return -EOPNOTSUPP;
+}
+
#endif
#if defined(CONFIG_CGROUP_BPF) && defined(CONFIG_BPF_LSM)
@@ -1577,8 +1663,12 @@ struct bpf_array {
#define BPF_COMPLEXITY_LIMIT_INSNS 1000000 /* yes. 1M insns */
#define MAX_TAIL_CALL_CNT 33
-/* Maximum number of loops for bpf_loop */
-#define BPF_MAX_LOOPS BIT(23)
+/* Maximum number of loops for bpf_loop and bpf_iter_num.
+ * It's enum to expose it (and thus make it discoverable) through BTF.
+ */
+enum {
+ BPF_MAX_LOOPS = 8 * 1024 * 1024,
+};
#define BPF_F_ACCESS_MASK (BPF_F_RDONLY | \
BPF_F_RDONLY_PROG | \
@@ -1881,7 +1971,7 @@ void bpf_prog_free_id(struct bpf_prog *prog);
void bpf_map_free_id(struct bpf_map *map);
struct btf_field *btf_record_find(const struct btf_record *rec,
- u32 offset, enum btf_field_type type);
+ u32 offset, u32 field_mask);
void btf_record_free(struct btf_record *rec);
void bpf_map_free_record(struct bpf_map *map);
struct btf_record *btf_record_dup(const struct btf_record *rec);
@@ -1894,6 +1984,7 @@ struct bpf_map *bpf_map_get_with_uref(u32 ufd);
struct bpf_map *__bpf_map_get(struct fd f);
void bpf_map_inc(struct bpf_map *map);
void bpf_map_inc_with_uref(struct bpf_map *map);
+struct bpf_map *__bpf_map_inc_not_zero(struct bpf_map *map, bool uref);
struct bpf_map * __must_check bpf_map_inc_not_zero(struct bpf_map *map);
void bpf_map_put_with_uref(struct bpf_map *map);
void bpf_map_put(struct bpf_map *map);
@@ -2114,7 +2205,7 @@ int bpf_check_uarg_tail_zero(bpfptr_t uaddr, size_t expected_size,
size_t actual_size);
/* verify correctness of eBPF program */
-int bpf_check(struct bpf_prog **fp, union bpf_attr *attr, bpfptr_t uattr);
+int bpf_check(struct bpf_prog **fp, union bpf_attr *attr, bpfptr_t uattr, u32 uattr_size);
#ifndef CONFIG_BPF_JIT_ALWAYS_ON
void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth);
@@ -2173,6 +2264,9 @@ int bpf_prog_test_run_raw_tp(struct bpf_prog *prog,
int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog,
const union bpf_attr *kattr,
union bpf_attr __user *uattr);
+int bpf_prog_test_run_nf(struct bpf_prog *prog,
+ const union bpf_attr *kattr,
+ union bpf_attr __user *uattr);
bool btf_ctx_access(int off, int size, enum bpf_access_type type,
const struct bpf_prog *prog,
struct bpf_insn_access_aux *info);
@@ -2202,7 +2296,7 @@ static inline bool bpf_tracing_btf_ctx_access(int off, int size,
int btf_struct_access(struct bpf_verifier_log *log,
const struct bpf_reg_state *reg,
int off, int size, enum bpf_access_type atype,
- u32 *next_btf_id, enum bpf_type_flag *flag);
+ u32 *next_btf_id, enum bpf_type_flag *flag, const char **field_name);
bool btf_struct_ids_match(struct bpf_verifier_log *log,
const struct btf *btf, u32 id, int off,
const struct btf *need_btf, u32 need_type_id,
@@ -2234,6 +2328,9 @@ bool bpf_prog_has_kfunc_call(const struct bpf_prog *prog);
const struct btf_func_model *
bpf_jit_find_kfunc_model(const struct bpf_prog *prog,
const struct bpf_insn *insn);
+int bpf_get_kfunc_addr(const struct bpf_prog *prog, u32 func_id,
+ u16 btf_fd_idx, u8 **func_addr);
+
struct bpf_core_ctx {
struct bpf_verifier_log *log;
const struct btf *btf;
@@ -2241,7 +2338,7 @@ struct bpf_core_ctx {
bool btf_nested_type_is_trusted(struct bpf_verifier_log *log,
const struct bpf_reg_state *reg,
- int off);
+ const char *field_name, u32 btf_id, const char *suffix);
bool btf_type_ids_nocast_alias(struct bpf_verifier_log *log,
const struct btf *reg_btf, u32 reg_id,
@@ -2266,6 +2363,11 @@ static inline bool has_current_bpf_ctx(void)
}
void notrace bpf_prog_inc_misses_counter(struct bpf_prog *prog);
+
+void bpf_dynptr_init(struct bpf_dynptr_kern *ptr, void *data,
+ enum bpf_dynptr_type type, u32 offset, u32 size);
+void bpf_dynptr_set_null(struct bpf_dynptr_kern *ptr);
+void bpf_dynptr_set_rdonly(struct bpf_dynptr_kern *ptr);
#else /* !CONFIG_BPF_SYSCALL */
static inline struct bpf_prog *bpf_prog_get(u32 ufd)
{
@@ -2451,7 +2553,8 @@ static inline struct bpf_prog *bpf_prog_by_id(u32 id)
static inline int btf_struct_access(struct bpf_verifier_log *log,
const struct bpf_reg_state *reg,
int off, int size, enum bpf_access_type atype,
- u32 *next_btf_id, enum bpf_type_flag *flag)
+ u32 *next_btf_id, enum bpf_type_flag *flag,
+ const char **field_name)
{
return -EACCES;
}
@@ -2478,6 +2581,13 @@ bpf_jit_find_kfunc_model(const struct bpf_prog *prog,
return NULL;
}
+static inline int
+bpf_get_kfunc_addr(const struct bpf_prog *prog, u32 func_id,
+ u16 btf_fd_idx, u8 **func_addr)
+{
+ return -ENOTSUPP;
+}
+
static inline bool unprivileged_ebpf_enabled(void)
{
return false;
@@ -2495,6 +2605,19 @@ static inline void bpf_prog_inc_misses_counter(struct bpf_prog *prog)
static inline void bpf_cgrp_storage_free(struct cgroup *cgroup)
{
}
+
+static inline void bpf_dynptr_init(struct bpf_dynptr_kern *ptr, void *data,
+ enum bpf_dynptr_type type, u32 offset, u32 size)
+{
+}
+
+static inline void bpf_dynptr_set_null(struct bpf_dynptr_kern *ptr)
+{
+}
+
+static inline void bpf_dynptr_set_rdonly(struct bpf_dynptr_kern *ptr)
+{
+}
#endif /* CONFIG_BPF_SYSCALL */
void __bpf_free_used_btfs(struct bpf_prog_aux *aux,
@@ -2566,6 +2689,7 @@ static inline bool bpf_map_is_offloaded(struct bpf_map *map)
struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr);
void bpf_map_offload_map_free(struct bpf_map *map);
+u64 bpf_map_offload_map_mem_usage(const struct bpf_map *map);
int bpf_prog_test_run_syscall(struct bpf_prog *prog,
const union bpf_attr *kattr,
union bpf_attr __user *uattr);
@@ -2637,6 +2761,11 @@ static inline void bpf_map_offload_map_free(struct bpf_map *map)
{
}
+static inline u64 bpf_map_offload_map_mem_usage(const struct bpf_map *map)
+{
+ return 0;
+}
+
static inline int bpf_prog_test_run_syscall(struct bpf_prog *prog,
const union bpf_attr *kattr,
union bpf_attr __user *uattr)
@@ -2801,6 +2930,8 @@ u32 bpf_sock_convert_ctx_access(enum bpf_access_type type,
struct bpf_insn *insn_buf,
struct bpf_prog *prog,
u32 *target_size);
+int bpf_dynptr_from_skb_rdonly(struct sk_buff *skb, u64 flags,
+ struct bpf_dynptr_kern *ptr);
#else
static inline bool bpf_sock_common_is_valid_access(int off, int size,
enum bpf_access_type type,
@@ -2822,6 +2953,11 @@ static inline u32 bpf_sock_convert_ctx_access(enum bpf_access_type type,
{
return 0;
}
+static inline int bpf_dynptr_from_skb_rdonly(struct sk_buff *skb, u64 flags,
+ struct bpf_dynptr_kern *ptr)
+{
+ return -EOPNOTSUPP;
+}
#endif
#ifdef CONFIG_INET
@@ -2913,36 +3049,6 @@ int bpf_bprintf_prepare(char *fmt, u32 fmt_size, const u64 *raw_args,
u32 num_args, struct bpf_bprintf_data *data);
void bpf_bprintf_cleanup(struct bpf_bprintf_data *data);
-/* the implementation of the opaque uapi struct bpf_dynptr */
-struct bpf_dynptr_kern {
- void *data;
- /* Size represents the number of usable bytes of dynptr data.
- * If for example the offset is at 4 for a local dynptr whose data is
- * of type u64, the number of usable bytes is 4.
- *
- * The upper 8 bits are reserved. It is as follows:
- * Bits 0 - 23 = size
- * Bits 24 - 30 = dynptr type
- * Bit 31 = whether dynptr is read-only
- */
- u32 size;
- u32 offset;
-} __aligned(8);
-
-enum bpf_dynptr_type {
- BPF_DYNPTR_TYPE_INVALID,
- /* Points to memory that is local to the bpf program */
- BPF_DYNPTR_TYPE_LOCAL,
- /* Underlying data is a kernel-produced ringbuf record */
- BPF_DYNPTR_TYPE_RINGBUF,
-};
-
-void bpf_dynptr_init(struct bpf_dynptr_kern *ptr, void *data,
- enum bpf_dynptr_type type, u32 offset, u32 size);
-void bpf_dynptr_set_null(struct bpf_dynptr_kern *ptr);
-int bpf_dynptr_check_size(u32 size);
-u32 bpf_dynptr_get_size(const struct bpf_dynptr_kern *ptr);
-
#ifdef CONFIG_BPF_LSM
void bpf_cgroup_atype_get(u32 attach_btf_id, int cgroup_atype);
void bpf_cgroup_atype_put(int cgroup_atype);
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2025-01-12 22:57:42 +0000