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authorJesper Dangaard Brouer <brouer@redhat.com>2018-08-15 16:57:14 +0200
committerDaniel Borkmann <daniel@iogearbox.net>2018-08-16 21:55:32 +0200
commit817b89beb9d8876450fcde9155e17425c329569d (patch)
tree8bce921ed07fac52944dbb6d156cc16f62f864b3 /samples/bpf/xdp_rxq_info_user.c
parent21b172ee11b6ec260bd7e6a27b11a8a8d392fce5 (diff)
downloadlinux-stericsson-817b89beb9d8876450fcde9155e17425c329569d.tar.gz
samples/bpf: all XDP samples should unload xdp/bpf prog on SIGTERM
It is common XDP practice to unload/deattach the XDP bpf program, when the XDP sample program is Ctrl-C interrupted (SIGINT) or killed (SIGTERM). The samples/bpf programs xdp_redirect_cpu and xdp_rxq_info, forgot to trap signal SIGTERM (which is the default signal used by the kill command). This was discovered by Red Hat QA, which automated scripts depend on killing the XDP sample program after a timeout period. Fixes: fad3917e361b ("samples/bpf: add cpumap sample program xdp_redirect_cpu") Fixes: 0fca931a6f21 ("samples/bpf: program demonstrating access to xdp_rxq_info") Reported-by: Jean-Tsung Hsiao <jhsiao@redhat.com> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'samples/bpf/xdp_rxq_info_user.c')
-rw-r--r--samples/bpf/xdp_rxq_info_user.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/samples/bpf/xdp_rxq_info_user.c b/samples/bpf/xdp_rxq_info_user.c
index 248a7eab9531..ef26f882f92f 100644
--- a/samples/bpf/xdp_rxq_info_user.c
+++ b/samples/bpf/xdp_rxq_info_user.c
@@ -567,8 +567,9 @@ int main(int argc, char **argv)
exit(EXIT_FAIL_BPF);
}
- /* Remove XDP program when program is interrupted */
+ /* Remove XDP program when program is interrupted or killed */
signal(SIGINT, int_exit);
+ signal(SIGTERM, int_exit);
if (bpf_set_link_xdp_fd(ifindex, prog_fd, xdp_flags) < 0) {
fprintf(stderr, "link set xdp fd failed\n");