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https://git.proxmox.com/git/mirror_iproute2
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fc4ccce038
Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net>
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
/*
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* bpf_util.h BPF common code
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*
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* This program is free software; you can distribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Daniel Borkmann <daniel@iogearbox.net>
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* Jiri Pirko <jiri@resnulli.us>
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*/
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#ifndef __BPF_UTIL__
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#define __BPF_UTIL__
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#include <linux/bpf.h>
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#include <linux/filter.h>
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#include <linux/magic.h>
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#include <linux/elf-em.h>
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#include <linux/if_alg.h>
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#include "utils.h"
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#include "bpf_scm.h"
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#define BPF_ENV_UDS "TC_BPF_UDS"
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#define BPF_ENV_MNT "TC_BPF_MNT"
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#ifndef BPF_MAX_LOG
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# define BPF_MAX_LOG 4096
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#endif
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#define BPF_DIR_GLOBALS "globals"
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#ifndef BPF_FS_MAGIC
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# define BPF_FS_MAGIC 0xcafe4a11
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#endif
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#define BPF_DIR_MNT "/sys/fs/bpf"
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#ifndef TRACEFS_MAGIC
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# define TRACEFS_MAGIC 0x74726163
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#endif
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#define TRACE_DIR_MNT "/sys/kernel/tracing"
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#ifndef AF_ALG
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# define AF_ALG 38
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#endif
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#ifndef EM_BPF
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# define EM_BPF 247
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#endif
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struct bpf_cfg_ops {
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void (*cbpf_cb)(void *nl, const struct sock_filter *ops, int ops_len);
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void (*ebpf_cb)(void *nl, int fd, const char *annotation);
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};
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struct bpf_cfg_in {
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const char *object;
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const char *section;
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const char *uds;
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int argc;
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char **argv;
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struct sock_filter *ops;
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};
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int bpf_parse_common(enum bpf_prog_type type, struct bpf_cfg_in *cfg,
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const struct bpf_cfg_ops *ops, void *nl);
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const char *bpf_prog_to_default_section(enum bpf_prog_type type);
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int bpf_graft_map(const char *map_path, uint32_t *key, int argc, char **argv);
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int bpf_trace_pipe(void);
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void bpf_print_ops(FILE *f, struct rtattr *bpf_ops, __u16 len);
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int bpf_prog_attach_fd(int prog_fd, int target_fd, enum bpf_attach_type type);
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int bpf_prog_detach_fd(int target_fd, enum bpf_attach_type type);
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#ifdef HAVE_ELF
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int bpf_send_map_fds(const char *path, const char *obj);
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int bpf_recv_map_fds(const char *path, int *fds, struct bpf_map_aux *aux,
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unsigned int entries);
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#else
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static inline int bpf_send_map_fds(const char *path, const char *obj)
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{
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return 0;
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}
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static inline int bpf_recv_map_fds(const char *path, int *fds,
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struct bpf_map_aux *aux,
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unsigned int entries)
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{
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return -1;
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}
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#endif /* HAVE_ELF */
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#endif /* __BPF_UTIL__ */
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