selftests/net: udpgso_bench_tx: fix dst ip argument

udpgso_bench_tx call setup_sockaddr() for dest address before
parsing all arguments, if we specify "-p ${dst_port}" after "-D ${dst_ip}",
then ${dst_port} will be ignored, and using default cfg_port 8000.

This will cause test case "multiple GRO socks" failed in udpgro.sh.

Setup sockaddr after parsing all arguments.

Fixes: 3a687bef148d ("selftests: udp gso benchmark")
Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/ff620d9f-5b52-06ab-5286-44b945453002@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/net/udpgso_bench_tx.c b/tools/testing/selftests/net/udpgso_bench_tx.c
index 17512a4..f1fdaa2 100644 (file)
--- a/tools/testing/selftests/net/udpgso_bench_tx.c
+++ b/tools/testing/selftests/net/udpgso_bench_tx.c
@@ -419,6 +419,7 @@ static void usage(const char *filepath)
 
 static void parse_opts(int argc, char **argv)
 {
+       const char *bind_addr = NULL;
        int max_len, hdrlen;
        int c;
 
@@ -446,7 +447,7 @@ static void parse_opts(int argc, char **argv)
                        cfg_cpu = strtol(optarg, NULL, 0);
                        break;
                case 'D':
-                       setup_sockaddr(cfg_family, optarg, &cfg_dst_addr);
+                       bind_addr = optarg;
                        break;
                case 'l':
                        cfg_runtime_ms = strtoul(optarg, NULL, 10) * 1000;
@@ -492,6 +493,11 @@ static void parse_opts(int argc, char **argv)
                }
        }
 
+       if (!bind_addr)
+               bind_addr = cfg_family == PF_INET6 ? "::" : "0.0.0.0";
+
+       setup_sockaddr(cfg_family, bind_addr, &cfg_dst_addr);
+
        if (optind != argc)
                usage(argv[0]);