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| author |   Daniel T. Lee <danieltimlee@gmail.com> | 2020-05-16 13:06:04 +0900 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2020-05-19 17:12:49 +0200 |
| commit | 0efdcefb00d768442efef21560ea4c44d481fa5c (patch) | |
| tree | 8be1ed7d70e6a61c43d53f984061e5d2acd1e4a3 /samples/bpf/xdp_redirect_cpu_user.c | |
| parent | bpf: Selftests, add ktls tests to test_sockmap (diff) | |
| download | wireguard-linux-0efdcefb00d768442efef21560ea4c44d481fa5c.tar.xz wireguard-linux-0efdcefb00d768442efef21560ea4c44d481fa5c.zip | |
samples, bpf: Refactor pointer error check with libbpf
Current method of checking pointer error is not user friendly.
Especially the __must_check define makes this less intuitive.
Since, libbpf has an API libbpf_get_error() which checks pointer error,
this commit refactors existing pointer error check logic with libbpf.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200516040608.1377876-2-danieltimlee@gmail.com
Diffstat (limited to '')
| -rw-r--r-- | samples/bpf/xdp_redirect_cpu_user.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/samples/bpf/xdp_redirect_cpu_user.c b/samples/bpf/xdp_redirect_cpu_user.c index 9b8f21abeac4..f3468168982e 100644 --- a/samples/bpf/xdp_redirect_cpu_user.c +++ b/samples/bpf/xdp_redirect_cpu_user.c @@ -19,9 +19,6 @@ static const char *__doc__ = #include <time.h> #include <linux/limits.h> -#define __must_check -#include <linux/err.h> - #include <arpa/inet.h> #include <linux/if_link.h> @@ -622,7 +619,7 @@ static struct bpf_link * attach_tp(struct bpf_object *obj, } link = bpf_program__attach_tracepoint(prog, tp_category, tp_name); - if (IS_ERR(link)) + if (libbpf_get_error(link)) exit(EXIT_FAIL_BPF); return link; |