2022-12-21 21:11:40 +01:00
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#ifndef OPENSNITCH_COMMON_DEFS_H
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#define OPENSNITCH_COMMON_DEFS_H
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#include <linux/sched.h>
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#include <linux/ptrace.h>
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#include <uapi/linux/bpf.h>
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ebpf: new way of compiling the modules
- Don't rename libbpf's bpf_map_def struct, and distribute the needed bpf
headers.
The bpf_map_def struct has been deprecated for quite some time now,
and it was been removed on >= 6.2 anyway.
We still need it, because we use gobpf.
- Improved compilation behaviour:
- We don't require the kernel sources anymore. We can just use the
kernel headers from the distribution.
- There's no need to copy the sources to the kernel tree, the modules
can be compiled from the ebpf_prog/ dir.
- Compiling against kernels 6.x seems to solve the problem we had with
VPNs, where connections were not intercepted with modules compiled
against 5.8, on kernels >= 5.19.
The modules has been tested on kernels 4.17, 5.4, 5.10, 5.15, 6.1 and
6.2 (kernel connections included).
Closes: #939
2023-05-17 01:20:53 +02:00
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#include "bpf_headers/bpf_helpers.h"
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#include "bpf_headers/bpf_tracing.h"
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//#include <bpf/bpf_core_read.h>
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2022-12-21 21:11:40 +01:00
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#define BUF_SIZE_MAP_NS 256
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#define MAPSIZE 12000
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// even though we only need 32 bits of pid, on x86_32 ebpf verifier complained when pid type was set to u32
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typedef u64 pid_size_t;
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typedef u64 uid_size_t;
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//-------------------------------map definitions
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// which github.com/iovisor/gobpf/elf expects
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typedef struct bpf_map_def {
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unsigned int type;
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unsigned int key_size;
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unsigned int value_size;
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unsigned int max_entries;
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unsigned int map_flags;
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unsigned int pinning;
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char namespace[BUF_SIZE_MAP_NS];
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} bpf_map_def;
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enum bpf_pin_type {
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PIN_NONE = 0,
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PIN_OBJECT_NS,
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PIN_GLOBAL_NS,
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PIN_CUSTOM_NS,
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};
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//-----------------------------------
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#endif
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