netdev - [RFC PATCH 4/4] selftests: add GRO support, fix port option processing

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Message-Id: <85fcc19c94ff106b72ae216b07216da42c56e395.1536939423.git.pabeni@redhat.com>
Date:   Fri, 14 Sep 2018 17:43:24 +0200
From:   Paolo Abeni <pabeni@...hat.com>
To:     netdev@...r.kernel.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        Willem de Bruijn <willemb@...gle.com>,
        Steffen Klassert <steffen.klassert@...unet.com>
Subject: [RFC PATCH 4/4] selftests: add GRO support, fix port option processing

Not a full test-case yet, but allows triggering the UDP GSO code
path.

Signed-off-by: Paolo Abeni <pabeni@...hat.com>
---
 tools/testing/selftests/net/udpgso_bench_rx.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/net/udpgso_bench_rx.c b/tools/testing/selftests/net/udpgso_bench_rx.c
index 727cf67a3f75..f8bb7ea6bd25 100644
--- a/tools/testing/selftests/net/udpgso_bench_rx.c
+++ b/tools/testing/selftests/net/udpgso_bench_rx.c
@@ -31,9 +31,14 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
+#ifndef UDP_SEGMENT
+#define UDP_SEGMENT		103
+#endif
+
 static int  cfg_port		= 8000;
 static bool cfg_tcp;
 static bool cfg_verify;
+static bool cfg_gro_segment;
 
 static bool interrupted;
 static unsigned long packets, bytes;
@@ -199,10 +204,13 @@ static void parse_opts(int argc, char **argv)
 {
 	int c;
 
-	while ((c = getopt(argc, argv, "ptv")) != -1) {
+	while ((c = getopt(argc, argv, "p:Stv")) != -1) {
 		switch (c) {
 		case 'p':
-			cfg_port = htons(strtoul(optarg, NULL, 0));
+			cfg_port = strtoul(optarg, NULL, 0);
+			break;
+		case 'S':
+			cfg_gro_segment = true;
 			break;
 		case 't':
 			cfg_tcp = true;
@@ -227,6 +235,12 @@ static void do_recv(void)
 
 	fd = do_socket(cfg_tcp);
 
+	if (cfg_gro_segment) {
+		int val = 1;
+		if (setsockopt(fd, IPPROTO_UDP, UDP_SEGMENT, &val, sizeof(val)))
+			error(1, errno, "setsockopt UDP_SEGMENT");
+	}
+
 	treport = gettimeofday_ms() + 1000;
 	do {
 		do_poll(fd);
-- 
2.17.1