[PATCH iproute2 1/4] ip vrf: Move kernel config hint to prog_load failure
From: David Ahern <hidden>
Date: 2016-12-15 20:07:09
Subsystem:
the rest · Maintainer:
Linus Torvalds
Move the hint about CGROUP_BPF enabled to prog_load failure since it fails before the attach. Update the existing error message to print to stderr. Signed-off-by: David Ahern <redacted> --- ip/ipvrf.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/ip/ipvrf.c b/ip/ipvrf.c
index 4d59845416cd..44ad7e07024a 100644
--- a/ip/ipvrf.c
+++ b/ip/ipvrf.c@@ -170,14 +170,15 @@ static int vrf_configure_cgroup(const char *path, int ifindex) */ prog_fd = prog_load(ifindex); if (prog_fd < 0) { - printf("Failed to load BPF prog: '%s'\n", strerror(errno)); + fprintf(stderr, "Failed to load BPF prog: '%s'\n", + strerror(errno)); + fprintf(stderr, "Kernel compiled with CGROUP_BPF enabled?\n"); goto out; } if (bpf_prog_attach_fd(prog_fd, cg_fd, BPF_CGROUP_INET_SOCK_CREATE)) { fprintf(stderr, "Failed to attach prog to cgroup: '%s'\n", strerror(errno)); - fprintf(stderr, "Kernel compiled with CGROUP_BPF enabled?\n"); goto out; }
--
2.1.4