[PATCH net-next 10/10] selftests/net: add jumbogram test case to msg_zerocopy.sh

[Mariusz Klimek <maklimek97@gmail.com>]

This patch adds a test case to msg_zerocopy.sh that tests whether zerocopy
works with TCP jumbograms.

Signed-off-by: Mariusz Klimek <maklimek97@gmail.com>
---
 tools/testing/selftests/net/msg_zerocopy.c  | 3 ++-
 tools/testing/selftests/net/msg_zerocopy.sh | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/net/msg_zerocopy.c b/tools/testing/selftests/net/msg_zerocopy.c
index 1d5d3c4e7e87..b5df360c7811 100644
--- a/tools/testing/selftests/net/msg_zerocopy.c
+++ b/tools/testing/selftests/net/msg_zerocopy.c
@@ -789,7 +789,8 @@ static void parse_opts(int argc, char **argv)
 	setup_sockaddr(cfg_family, daddr, &cfg_dst_addr);
 	setup_sockaddr(cfg_family, saddr, &cfg_src_addr);
 
-	if (cfg_payload_len > max_payload_len)
+	if (cfg_payload_len > max_payload_len &&
+	    (strcmp(cfg_test, "tcp") != 0 || cfg_family != PF_INET6))
 		error(1, 0, "-s: payload exceeds max (%d)", max_payload_len);
 	if (cfg_cork_mixed && (!cfg_zerocopy || !cfg_cork))
 		error(1, 0, "-m: cork_mixed requires corking and zerocopy");
diff --git a/tools/testing/selftests/net/msg_zerocopy.sh b/tools/testing/selftests/net/msg_zerocopy.sh
index 28178a38a4e7..ab498c6ea210 100755
--- a/tools/testing/selftests/net/msg_zerocopy.sh
+++ b/tools/testing/selftests/net/msg_zerocopy.sh
@@ -7,7 +7,7 @@ set -e
 
 readonly DEV="veth0"
 readonly DUMMY_DEV="dummy0"
-readonly DEV_MTU=65535
+readonly DEV_MTU=200000
 readonly BIN="./msg_zerocopy"
 
 readonly RAND="$(mktemp -u XXXXXX)"
@@ -29,6 +29,7 @@ if [[ "$#" -eq "0" ]]; then
 
 	$0 4 tcp -t 1 || ret=1
 	$0 6 tcp -t 1 || ret=1
+	$0 6 tcp -t 1 -s 100000 || ret=1
 	$0 4 udp -t 1 || ret=1
 	$0 6 udp -t 1 || ret=1
 
-- 
2.47.3