Julia Kartseva
9984f4933b
Introduce bpf_cgroup_attach_type_table with accustomed attached type
names also used in bpftool.
Add bpf_cgroup_attach_type_{from|to}_string helpers to convert from|to
string representation of pinned bpf program, e.g.
"egress:/sys/fs/bpf/egress-hook" for
/sys/fs/bpf/egress-hook path and BPF_CGROUP_INET_EGRESS attach type.
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <linux/bpf.h>
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#include <stdint.h>
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#include <sys/syscall.h>
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#include "list.h"
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#include "macro.h"
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typedef struct BPFProgram BPFProgram;
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struct BPFProgram {
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unsigned n_ref;
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int kernel_fd;
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uint32_t prog_type;
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size_t n_instructions;
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size_t allocated;
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struct bpf_insn *instructions;
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char *attached_path;
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int attached_type;
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uint32_t attached_flags;
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};
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int bpf_program_new(uint32_t prog_type, BPFProgram **ret);
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int bpf_program_new_from_bpffs_path(const char *path, BPFProgram **ret);
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BPFProgram *bpf_program_ref(BPFProgram *p);
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BPFProgram *bpf_program_unref(BPFProgram *p);
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int bpf_program_add_instructions(BPFProgram *p, const struct bpf_insn *insn, size_t count);
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int bpf_program_load_kernel(BPFProgram *p, char *log_buf, size_t log_size);
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int bpf_program_load_from_bpf_fs(BPFProgram *p, const char *path);
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int bpf_program_cgroup_attach(BPFProgram *p, int type, const char *path, uint32_t flags);
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int bpf_program_cgroup_detach(BPFProgram *p);
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int bpf_program_pin(int prog_fd, const char *bpffs_path);
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int bpf_program_get_id_by_fd(int prog_fd, uint32_t *ret_id);
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int bpf_map_new(enum bpf_map_type type, size_t key_size, size_t value_size, size_t max_entries, uint32_t flags);
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int bpf_map_update_element(int fd, const void *key, void *value);
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int bpf_map_lookup_element(int fd, const void *key, void *value);
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int bpf_cgroup_attach_type_from_string(const char *str) _pure_;
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const char *bpf_cgroup_attach_type_to_string(int attach_type) _const_;
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DEFINE_TRIVIAL_CLEANUP_FUNC(BPFProgram*, bpf_program_unref);
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