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authorWang Sheng-Hui <shhuiw@foxmail.com>2018-04-25 05:07:13 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2018-04-27 01:47:06 +0300
commitc0885f61bbb6a89c35397d3a8fe49c35822cde81 (patch)
tree025e0167db35c4c5c6cd4e386aad75b85b4e7999 /samples
parenta6712d45b03e89800e687873fd4af015f5aaf4dd (diff)
downloadlinux-c0885f61bbb6a89c35397d3a8fe49c35822cde81.tar.xz
samples, bpf: remove redundant ret assignment in bpf_load_program()
2 redundant ret assignments removed: * 'ret = 1' before the logic 'if (data_maps)', and if any errors jump to label 'done'. No 'ret = 1' needed before the error jump. * After the '/* load programs */' part, if everything goes well, then the BPF code will be loaded and 'ret' set to 0 by load_and_attach(). If something goes wrong, 'ret' set to none-O, the redundant 'ret = 0' after the for clause will make the error skipped. For example, if some BPF code cannot provide supported program types in ELF SEC("unknown"), the for clause will not call load_and_attach() to load the BPF code. 1 should be returned to callees instead of 0. Signed-off-by: Wang Sheng-Hui <shhuiw@foxmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'samples')
-rw-r--r--samples/bpf/bpf_load.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index bebe4188b4b3..feca497d6afd 100644
--- a/samples/bpf/bpf_load.c
+++ b/samples/bpf/bpf_load.c
@@ -549,7 +549,6 @@ static int do_load_bpf_file(const char *path, fixup_map_cb fixup_map)
if (nr_maps < 0) {
printf("Error: Failed loading ELF maps (errno:%d):%s\n",
nr_maps, strerror(-nr_maps));
- ret = 1;
goto done;
}
if (load_maps(map_data, nr_maps, fixup_map))
@@ -615,7 +614,6 @@ static int do_load_bpf_file(const char *path, fixup_map_cb fixup_map)
}
}
- ret = 0;
done:
close(fd);
return ret;