leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

libbpf: Add getter for program size

Browse Source 
This adds a new getter for the BPF program size (in bytes). This is useful
for a caller that is trying to predict how much memory will be locked by
loading a BPF object into the kernel.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/157333185272.88376.10996937115395724683.stgit@toke.dk
This commit is contained in:
Toke Høiland-Jørgensen
2019-11-09 21:37:32 +01:00
committed by Alexei Starovoitov
parent 473f4e133a
commit 1a734efe06
3 changed files with 9 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
tools/lib/bpf/libbpf.c
View File

@@ -4782,6 +4782,11 @@ int bpf_program__fd(const struct bpf_program *prog)
return bpf_program__nth_fd(prog, 0);
}
size_t bpf_program__size(const struct bpf_program *prog)
{
return prog->insns_cnt * sizeof(struct bpf_insn);
}
int bpf_program__set_prep(struct bpf_program *prog, int nr_instances,
bpf_program_prep_t prep)
{