[esock|test] Add sendmsg/recvmsg small ping-pong test case for local (dgram)

Add a sendmsg and recvmsg small ping-pong test case for
Unix Domain (dgram) socket.

OTP-15822

1 files changed, 31 insertions, 1 deletions

diff --git a/erts/emulator/test/socket_SUITE.erl b/erts/emulator/test/socket_SUITE.erl
index b2159af5af..d08833017c 100644
--- a/erts/emulator/test/socket_SUITE.erl
+++ b/erts/emulator/test/socket_SUITE.erl
@@ -182,6 +182,7 @@
 
          traffic_ping_pong_small_sendmsg_and_recvmsg_udp4/1,
          traffic_ping_pong_small_sendmsg_and_recvmsg_udp6/1,
+         traffic_ping_pong_small_sendmsg_and_recvmsg_udpL/1,
          traffic_ping_pong_medium_sendmsg_and_recvmsg_udp4/1,
          traffic_ping_pong_medium_sendmsg_and_recvmsg_udp6/1,
 
@@ -765,6 +766,7 @@ traffic_cases() ->
 
      traffic_ping_pong_small_sendmsg_and_recvmsg_udp4,
      traffic_ping_pong_small_sendmsg_and_recvmsg_udp6,
+     traffic_ping_pong_small_sendmsg_and_recvmsg_udpL,
      traffic_ping_pong_medium_sendmsg_and_recvmsg_udp4,
      traffic_ping_pong_medium_sendmsg_and_recvmsg_udp6
     ].
@@ -11331,7 +11333,7 @@ traffic_ping_pong_small_sendmsg_and_recvmsg_udp6(_Config) when is_list(_Config)
            fun() -> has_support_ipv6() end,
            fun() ->
                    ?TT(?SECS(30)),
-                   InitState = #{domain => inet,
+                   InitState = #{domain => inet6,
                                  proto  => udp,
                                  msg    => Msg,
                                  num    => Num},
@@ -11340,6 +11342,34 @@ traffic_ping_pong_small_sendmsg_and_recvmsg_udp6(_Config) when is_list(_Config)
 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% This test case is intended to test that the sendmsg and recvmsg functions
+%% by repeatedly sending a meassage between two entities.
+%% The same basic test case is used for three different message sizes; 
+%% small (8 bytes) and medium (8K).
+%% The message is sent from A to B and then back again. This is 
+%% repeated a set number of times (more times the small the message).
+%% This is the 'small' message test case, for Unix Domain (dgram) socket.
+
+traffic_ping_pong_small_sendmsg_and_recvmsg_udpL(suite) ->
+    [];
+traffic_ping_pong_small_sendmsg_and_recvmsg_udpL(doc) ->
+    [];
+traffic_ping_pong_small_sendmsg_and_recvmsg_udpL(_Config) when is_list(_Config) ->
+    Msg = l2b(?TPP_SMALL),
+    Num = ?TPP_SMALL_NUM,
+    tc_try(traffic_ping_pong_small_sendmsg_and_recvmsg_udpL,
+           fun() -> has_support_unix_domain_socket() end,
+           fun() ->
+                   ?TT(?SECS(30)),
+                   InitState = #{domain => local,
+                                 proto  => default,
+                                 msg    => Msg,
+                                 num    => Num},
+                   ok = traffic_ping_pong_sendmsg_and_recvmsg_udp(InitState)
+           end).
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% This test case is intended to test that the sendmsg and recvmsg 
 %% functions by repeatedly sending a meassage between two entities.
 %% The same basic test case is used for three different message sizes;