Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
examples/send-zerocopy.c | 25 +++++++++++++++++++++----
1 file changed, 21 insertions(+), 4 deletions(-)
diff --git a/examples/send-zerocopy.c b/examples/send-zerocopy.c
index 84d2323..d7eb46a 100644
--- a/examples/send-zerocopy.c
+++ b/examples/send-zerocopy.c
@@ -452,7 +452,6 @@ out_fail:
io_uring_queue_exit(&ring);
}
-
static void *do_test(void *arg)
{
struct thread_data *td = arg;
@@ -467,8 +466,24 @@ static void *do_test(void *arg)
static void usage(const char *filepath)
{
- t_error(1, 0, "Usage: %s [-n<N>] [-z<val>] [-s<payload size>] "
- "(-4|-6) [-t<time s>] -D<dst_ip> udp", filepath);
+ printf("Usage:\t%s <protocol> <ip-version> -D<addr> [options]\n", filepath);
+ printf("\t%s <protocol> <ip-version> -R [options]\n\n", filepath);
+
+ printf(" -4\t\tUse IPv4\n");
+ printf(" -6\t\tUse IPv4\n");
+ printf(" -D <address>\tDestination address\n");
+ printf(" -p <port>\tServer port to listen on/connect to\n");
+ printf(" -s <size>\tBytes per request\n");
+ printf(" -s <size>\tBytes per request\n");
+ printf(" -n <nr>\tNumber of parallel requests\n");
+ printf(" -z <mode>\tZerocopy mode, 0 to disable, enabled otherwise\n");
+ printf(" -b <mode>\tUse registered buffers\n");
+ printf(" -l <mode>\tUse huge pages\n");
+ printf(" -d\t\tUse defer taskrun\n");
+ printf(" -C <cpu>\tPin to the specified CPU\n");
+ printf(" -T <nr>\tNumber of threads to use for sending\n");
+ printf(" -R\t\tPlay the server role\n");
+ printf(" -t <seconds>\tTime in seconds\n");
}
static void parse_opts(int argc, char **argv)
@@ -480,8 +495,10 @@ static void parse_opts(int argc, char **argv)
int c;
char *daddr = NULL;
- if (argc <= 1)
+ if (argc <= 1) {
usage(argv[0]);
+ exit(0);
+ }
cfg_payload_len = max_payload_len;
--
2.43.0
