diff options
author | Andy Gospodarek <andy@greyhouse.net> | 2017-05-11 22:52:30 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-05-12 04:43:30 +0300 |
commit | ad990dbe6d3ac3af1f5f4484b1126b9fc601e98a (patch) | |
tree | dd21487768f0a759ea6c2432c58e4a459fc9e183 /samples/bpf | |
parent | d2be3667f3769b3c60aa294ef7f2b03d1b16559c (diff) | |
download | linux-ad990dbe6d3ac3af1f5f4484b1126b9fc601e98a.tar.xz |
samples/bpf: run cleanup routines when receiving SIGTERM
Shahid Habib noticed that when xdp1 was killed from a different console the xdp
program was not cleaned-up properly in the kernel and it continued to forward
traffic.
Most of the applications in samples/bpf cleanup properly, but only when getting
SIGINT. Since kill defaults to using SIGTERM, add support to cleanup when the
application receives either SIGINT or SIGTERM.
Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Reported-by: Shahid Habib <shahid.habib@broadcom.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf')
-rw-r--r-- | samples/bpf/cookie_uid_helper_example.c | 4 | ||||
-rw-r--r-- | samples/bpf/offwaketime_user.c | 1 | ||||
-rw-r--r-- | samples/bpf/sampleip_user.c | 1 | ||||
-rw-r--r-- | samples/bpf/trace_event_user.c | 1 | ||||
-rw-r--r-- | samples/bpf/tracex2_user.c | 1 | ||||
-rw-r--r-- | samples/bpf/xdp1_user.c | 1 | ||||
-rw-r--r-- | samples/bpf/xdp_tx_iptunnel_user.c | 1 |
7 files changed, 9 insertions, 1 deletions
diff --git a/samples/bpf/cookie_uid_helper_example.c b/samples/bpf/cookie_uid_helper_example.c index b08ab4e88929..9d751e209f31 100644 --- a/samples/bpf/cookie_uid_helper_example.c +++ b/samples/bpf/cookie_uid_helper_example.c @@ -306,7 +306,9 @@ int main(int argc, char *argv[]) prog_attach_iptables(argv[2]); if (cfg_test_traffic) { if (signal(SIGINT, finish) == SIG_ERR) - error(1, errno, "register handler failed"); + error(1, errno, "register SIGINT handler failed"); + if (signal(SIGTERM, finish) == SIG_ERR) + error(1, errno, "register SIGTERM handler failed"); while (!test_finish) { print_table(); printf("\n"); diff --git a/samples/bpf/offwaketime_user.c b/samples/bpf/offwaketime_user.c index 9cce2a66bd66..512f87a5fd20 100644 --- a/samples/bpf/offwaketime_user.c +++ b/samples/bpf/offwaketime_user.c @@ -100,6 +100,7 @@ int main(int argc, char **argv) setrlimit(RLIMIT_MEMLOCK, &r); signal(SIGINT, int_exit); + signal(SIGTERM, int_exit); if (load_kallsyms()) { printf("failed to process /proc/kallsyms\n"); diff --git a/samples/bpf/sampleip_user.c b/samples/bpf/sampleip_user.c index be59d7dcbdde..4ed690b907ff 100644 --- a/samples/bpf/sampleip_user.c +++ b/samples/bpf/sampleip_user.c @@ -180,6 +180,7 @@ int main(int argc, char **argv) return 1; } signal(SIGINT, int_exit); + signal(SIGTERM, int_exit); /* do sampling */ printf("Sampling at %d Hertz for %d seconds. Ctrl-C also ends.\n", diff --git a/samples/bpf/trace_event_user.c b/samples/bpf/trace_event_user.c index 0c5561d193a4..fa4336423da5 100644 --- a/samples/bpf/trace_event_user.c +++ b/samples/bpf/trace_event_user.c @@ -192,6 +192,7 @@ int main(int argc, char **argv) setrlimit(RLIMIT_MEMLOCK, &r); signal(SIGINT, int_exit); + signal(SIGTERM, int_exit); if (load_kallsyms()) { printf("failed to process /proc/kallsyms\n"); diff --git a/samples/bpf/tracex2_user.c b/samples/bpf/tracex2_user.c index 7fee0f1ba9a3..7321a3f253c9 100644 --- a/samples/bpf/tracex2_user.c +++ b/samples/bpf/tracex2_user.c @@ -127,6 +127,7 @@ int main(int ac, char **argv) } signal(SIGINT, int_exit); + signal(SIGTERM, int_exit); /* start 'ping' in the background to have some kfree_skb events */ f = popen("ping -c5 localhost", "r"); diff --git a/samples/bpf/xdp1_user.c b/samples/bpf/xdp1_user.c index 17be9ea3ecb2..2431c0321b71 100644 --- a/samples/bpf/xdp1_user.c +++ b/samples/bpf/xdp1_user.c @@ -106,6 +106,7 @@ int main(int argc, char **argv) } signal(SIGINT, int_exit); + signal(SIGTERM, int_exit); if (set_link_xdp_fd(ifindex, prog_fd[0], xdp_flags) < 0) { printf("link set xdp fd failed\n"); diff --git a/samples/bpf/xdp_tx_iptunnel_user.c b/samples/bpf/xdp_tx_iptunnel_user.c index 631cdcc41c97..715cd12eaca5 100644 --- a/samples/bpf/xdp_tx_iptunnel_user.c +++ b/samples/bpf/xdp_tx_iptunnel_user.c @@ -244,6 +244,7 @@ int main(int argc, char **argv) } signal(SIGINT, int_exit); + signal(SIGTERM, int_exit); while (min_port <= max_port) { vip.dport = htons(min_port++); |