add support for marking ebpf programs as being only for some kernel versions
Some ebpf code cannot be loaded on too old kernels.
Sometimes we want a different - more advanced - version of an ebpf program
to be loaded on a newer kernel.
Test: build, atest
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I9e93e7246951916e6d60544575337a7a19c82886
diff --git a/progs/include/bpf_map_def.h b/progs/include/bpf_map_def.h
index 03ca73b..01d9b8e 100644
--- a/progs/include/bpf_map_def.h
+++ b/progs/include/bpf_map_def.h
@@ -57,4 +57,7 @@
struct bpf_prog_def {
unsigned int uid;
unsigned int gid;
+
+ unsigned int min_kver; // KERNEL_MAJOR * 65536 + KERNEL_MINOR * 256 + KERNEL_SUB
+ unsigned int max_kver; // ie. 0x40900 for Linux 4.9 - but beware of hexadecimal for >= 10
};