File 3791-Introduce-kernel-TLS-dist-module.patch of Package erlang

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File 3791-Introduce-kernel-TLS-dist-module.patch of Package erlang (Revision b2172ea35270b4e41324f000c94154cb)

Currently displaying revision b2172ea35270b4e41324f000c94154cb , Show latest

From 2c4e83212d1c989cabe3dd0839f65a7b5de9eeb8 Mon Sep 17 00:00:00 2001
From: Zeyu Zhang <zeyu@fb.com>
Date: Wed, 15 Jun 2022 16:16:33 -0700
Subject: [PATCH 01/11] Introduce kernel TLS dist module

---
 lib/ssl/src/inet_tls_dist.erl      | 156 ++++++++++++++++++++++++-----
 lib/ssl/src/ssl.erl                |   3 +
 lib/ssl/src/ssl_gen_statem.erl     |  53 +++++++++-
 lib/ssl/src/ssl_internal.hrl       |   1 +
 lib/ssl/src/tls_connection_1_3.erl |  12 ++-
 lib/ssl/src/tls_gen_connection.erl |   7 ++
 lib/ssl/test/ssl_dist_SUITE.erl    |  89 ++++++++++++++++
 7 files changed, 291 insertions(+), 30 deletions(-)

diff --git a/lib/ssl/src/inet_tls_dist.erl b/lib/ssl/src/inet_tls_dist.erl
index f0b5da43b3..89db0bab11 100644
--- a/lib/ssl/src/inet_tls_dist.erl
+++ b/lib/ssl/src/inet_tls_dist.erl
@@ -41,6 +41,8 @@
 -include_lib("public_key/include/public_key.hrl").
 
 -include("ssl_api.hrl").
+-include("ssl_cipher.hrl").
+-include("ssl_internal.hrl").
 -include_lib("kernel/include/logger.hrl").
 
 %% -------------------------------------------------------------------------
@@ -70,8 +72,55 @@ is_node_name(Node) ->
 
 %% -------------------------------------------------------------------------
 
+hs_data_common(Socket) when is_port(Socket) ->
+    {ok, {Ip, Port}} = inet:peername(Socket),
+    #hs_data{
+        socket = Socket,
+        f_send = fun inet_tcp:send/2,
+        f_recv = fun inet_tcp:recv/3,
+        f_setopts_pre_nodeup =
+            fun(S) ->
+                inet:setopts(
+                    S,
+                    [
+                        {active, false},
+                        {packet, 4},
+                        nodelay()
+                    ]
+                )
+            end,
+        f_setopts_post_nodeup =
+            fun(S) ->
+                inet:setopts(
+                    S,
+                    [
+                        {active, true},
+                        {deliver, port},
+                        {packet, 4},
+                        nodelay()
+                    ]
+                )
+            end,
+
+        f_getll = fun inet:getll/1,
+        f_address =
+            fun(_, Node) ->
+                {node, _, Host} = dist_util:split_node(Node),
+                #net_address{
+                    address = {Ip, Port},
+                    host = Host,
+                    protocol = tls,
+                    family = inet
+                }
+            end,
+        mf_tick = fun(S) -> inet_tcp_dist:tick(inet_tcp, S) end,
+        mf_getstat = fun inet_tcp_dist:getstat/1,
+        mf_setopts = fun inet_tcp_dist:setopts/2,
+        mf_getopts = fun inet_tcp_dist:getopts/2
+    };
 hs_data_common(#sslsocket{pid = [_, DistCtrl|_]} = SslSocket) ->
     #hs_data{
+       socket = DistCtrl,
        f_send =
            fun (_Ctrl, Packet) ->
                    f_send(SslSocket, Packet)
@@ -272,6 +321,7 @@ spawn_accept({Driver, Listen, Kernel}) ->
 
 accept_one(Driver, Kernel, Socket) ->
     Opts = setup_verify_client(Socket, get_ssl_options(server)),
+    KTLS = proplists:get_value(ktls, Opts, false),
     wait_for_code_server(),
     case
         ssl:handshake(
@@ -279,14 +329,28 @@ accept_one(Driver, Kernel, Socket) ->
           trace([{active, false},{packet, 4}|Opts]),
           net_kernel:connecttime())
     of
-        {ok, #sslsocket{pid = [_, DistCtrl| _]} = SslSocket} ->
+        {ok, #sslsocket{pid = [Receiver, Sender| _]} = SslSocket} ->
+            DistCtrl = case KTLS of
+                true ->
+                    {ok, KtlsInfo} = ssl_gen_statem:ktls_handover(Receiver),
+                    set_ktls(KtlsInfo),
+                    Socket;
+                false ->
+                    Sender
+            end,
             trace(
               Kernel !
                   {accept, self(), DistCtrl,
                    Driver:family(), tls}),
             receive
                 {Kernel, controller, Pid} ->
-                    case ssl:controlling_process(SslSocket, Pid) of
+                    ChangeOwner = case KTLS of
+                        true ->
+                            inet_tcp:controlling_process(Socket, Pid);
+                        false ->
+                            ssl:controlling_process(SslSocket, Pid)
+                    end,
+                    case ChangeOwner of
                         ok ->
                             trace(Pid ! {self(), controller});
                         Error ->
@@ -448,19 +512,22 @@ do_accept(
     receive
 	{AcceptPid, controller} ->
             erlang:demonitor(MRef, [flush]),
-            {ok, SslSocket} = tls_sender:dist_tls_socket(DistCtrl),
-	    Timer = dist_util:start_timer(SetupTime),
-            NewAllowed = allowed_nodes(SslSocket, Allowed),
-            HSData0 = hs_data_common(SslSocket),
+            Timer = dist_util:start_timer(SetupTime),
+            {HSData0, NewAllowed} = case is_port(DistCtrl) of
+                true ->
+                    {hs_data_common(DistCtrl), Allowed};
+                false ->
+                    {ok, SslSocket} = tls_sender:dist_tls_socket(DistCtrl),
+                    link(DistCtrl),
+                    {hs_data_common(SslSocket), allowed_nodes(SslSocket, Allowed)}
+            end,
             HSData =
                 HSData0#hs_data{
                   kernel_pid = Kernel,
                   this_node = MyNode,
-                  socket = DistCtrl,
                   timer = Timer,
                   this_flags = 0,
                   allowed = NewAllowed},
-            link(DistCtrl),
             dist_util:handshake_other_started(trace(HSData));
         {AcceptPid, exit} ->
             %% this can happen when connection was initiated, but dropped
@@ -579,35 +646,43 @@ do_setup(Driver, Kernel, Node, Type, MyNode, LongOrShortNames, SetupTime) ->
 
 do_setup_connect(Driver, Kernel, Node, Address, Ip, TcpPort, Version, Type, MyNode, Timer) ->
     Opts =  trace(connect_options(get_ssl_options(client))),
+    KTLS = proplists:get_value(ktls, Opts, false),
     dist_util:reset_timer(Timer),
     case ssl:connect(
         Ip, TcpPort,
         [binary, {active, false}, {packet, 4}, {server_name_indication, Address},
             Driver:family(), {nodelay, true}] ++ Opts,
-        net_kernel:connecttime()) of
-    {ok, #sslsocket{pid = [_, DistCtrl| _]} = SslSocket} ->
-            _ = monitor_pid(DistCtrl),
-            ok = ssl:controlling_process(SslSocket, self()),
-            HSData0 = hs_data_common(SslSocket),
-        HSData =
+        net_kernel:connecttime()
+    ) of
+        {ok, #sslsocket{pid = [Receiver, Sender| _]} = SslSocket} ->
+            HSData0 = case KTLS of
+                true ->
+                    {ok, KtlsInfo} = ssl_gen_statem:ktls_handover(Receiver),
+                    set_ktls(KtlsInfo),
+                    #{socket := Socket} = KtlsInfo,
+                    hs_data_common(Socket);
+                false ->
+                    _ = monitor_pid(Sender),
+                    ok = ssl:controlling_process(SslSocket, self()),
+                    link(Sender),
+                    hs_data_common(SslSocket)
+            end,
+            HSData =
                 HSData0#hs_data{
                 kernel_pid = Kernel,
                 other_node = Node,
                 this_node = MyNode,
-                socket = DistCtrl,
                 timer = Timer,
                 this_flags = 0,
                 other_version = Version,
                 request_type = Type},
-            link(DistCtrl),
-    dist_util:handshake_we_started(trace(HSData));
-    Other ->
-    %% Other Node may have closed since
-    %% port_please !
-    ?shutdown2(
-            Node,
-            trace(
-                {ssl_connect_failed, Ip, TcpPort, Other}))
+            dist_util:handshake_we_started(trace(HSData));
+        Other ->
+        %% Other Node may have closed since
+        %% port_please !
+            ?shutdown2(
+                Node,
+                trace({ssl_connect_failed, Ip, TcpPort, Other}))
     end.
 
 close(Socket) ->
@@ -897,6 +972,39 @@ verify_fun(Value) ->
 	    error(malformed_ssl_dist_opt, [Value])
     end.
 
+set_ktls(#{
+    socket := Socket,
+    tls_version := {3, 4},
+    cipher_suite := ?TLS_AES_256_GCM_SHA384,
+    socket_options := #socket_options{
+        mode = _Mode,
+        packet = Packet,
+        packet_size = PacketSize,
+        header = Header,
+        active = Active
+    },
+    write_state := #cipher_state{
+        iv = <<WriteSalt:4/bytes, WriteIV:8/bytes>>, key = WriteKey
+    },
+    write_seq := WriteSeq,
+    read_state := #cipher_state{
+        iv = <<ReadSalt:4/bytes, ReadIV:8/bytes>>, key = ReadKey
+    },
+    read_seq := ReadSeq
+}) ->
+    % SOL_TCP = 6, TCP_ULP = 31
+    inet:setopts(Socket, [{raw, 6, 31, <<"tls">>}]),
+    % SOL_TLS = 282, TLS_TX = 1, TLS_RX = 2, TLS_1_3_VERSION = <<4, 3>>, TLS_CIPHER_AES_GCM_256 = <<52, 0>>
+    inet:setopts(Socket, [
+        {raw, 282, 1, <<4, 3, 52, 0, WriteIV/binary, WriteKey/binary, WriteSalt/binary, WriteSeq:64>>}
+    ]),
+    inet:setopts(Socket, [
+        {raw, 282, 2, <<4, 3, 52, 0, ReadIV/binary, ReadKey/binary, ReadSalt/binary, ReadSeq:64>>}
+    ]),
+    inet:setopts(Socket, [
+        list, {packet, Packet}, {packet_size, PacketSize}, {header, Header}, {active, Active}
+    ]).
+
 %% -------------------------------------------------------------------------
 
 %% Trace point
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index c16c076afd..665449be8c 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -2204,6 +2204,9 @@ validate_option(early_data = Option, Value, client) ->
 validate_option(erl_dist, Value, _)
   when is_boolean(Value) ->
     Value;
+validate_option(ktls, Value, _)
+  when is_boolean(Value) ->
+    Value;
 validate_option(fail_if_no_peer_cert, Value, _)
   when is_boolean(Value) ->
     Value;
diff --git a/lib/ssl/src/ssl_gen_statem.erl b/lib/ssl/src/ssl_gen_statem.erl
index 0b4d032f78..d5d83612b2 100644
--- a/lib/ssl/src/ssl_gen_statem.erl
+++ b/lib/ssl/src/ssl_gen_statem.erl
@@ -62,7 +62,8 @@
          set_opts/2,
 	 peer_certificate/1,
          negotiated_protocol/1,
-	 connection_information/2
+	 connection_information/2,
+         ktls_handover/1
 	]).
 
 %% Erlang Distribution export
@@ -422,6 +423,14 @@ peer_certificate(ConnectionPid) ->
 negotiated_protocol(ConnectionPid) ->
     call(ConnectionPid, negotiated_protocol).
 
+%%--------------------------------------------------------------------
+-spec ktls_handover(pid()) -> {ok, map()} | {error, reason()}.
+%%
+%% Description:  Returns the negotiated protocol
+%%--------------------------------------------------------------------
+ktls_handover(ConnectionPid) ->
+    call(ConnectionPid, ktls_handover).
+
 dist_handshake_complete(ConnectionPid, DHandle) ->
     gen_statem:cast(ConnectionPid, {dist_handshake_complete, DHandle}).
 
@@ -648,6 +657,45 @@ connection({call, From},
         {error, timeout} ->
             {stop_and_reply, {shutdown, downgrade_fail}, [{reply, From, {error, timeout}}]}
     end;
+connection({call, From}, ktls_handover, #state{
+    static_env = #static_env{
+        transport_cb = Transport,
+        socket = Socket
+    },
+    connection_env = #connection_env{
+        user_application = {_Mon, Pid},
+        negotiated_version = TlsVersion
+    },
+    ssl_options = #{ktls := true},
+    socket_options = SocketOpts,
+    connection_states = #{
+        current_write := #{
+            security_parameters := #security_parameters{cipher_suite = CipherSuite},
+            cipher_state := WriteState,
+            sequence_number := WriteSeq
+        },
+        current_read := #{
+            cipher_state := ReadState,
+            sequence_number := ReadSeq
+        }
+    }
+}) ->
+    Reply = case Transport:controlling_process(Socket, Pid) of
+        ok ->
+            {ok, #{
+                socket => Socket,
+                tls_version => TlsVersion,
+                cipher_suite => CipherSuite,
+                socket_options => SocketOpts,
+                write_state => WriteState,
+                write_seq => WriteSeq,
+                read_state => ReadState,
+                read_seq => ReadSeq
+            }};
+        {error, Reason} ->
+            {error, Reason}
+    end,
+    {stop_and_reply, {shutdown, ktls}, [{reply, From, Reply}]};
 connection({call, From}, Msg, State) ->
     handle_call(Msg, From, ?FUNCTION_NAME, State);
 connection(cast, {dist_handshake_complete, DHandle},
@@ -1129,6 +1177,9 @@ maybe_invalidate_session({false, first}, server = Role, Host, Port, Session) ->
 maybe_invalidate_session(_, _, _, _, _) ->
     ok.
 
+terminate({shutdown, ktls}, connection, State) ->
+    %% Socket shall not be closed as it should be returned to user
+    handle_trusted_certs_db(State);
 terminate({shutdown, downgrade}, downgrade, State) ->
     %% Socket shall not be closed as it should be returned to user
     handle_trusted_certs_db(State);
diff --git a/lib/ssl/src/ssl_internal.hrl b/lib/ssl/src/ssl_internal.hrl
index 93d7c2456e..86f55c4601 100644
--- a/lib/ssl/src/ssl_internal.hrl
+++ b/lib/ssl/src/ssl_internal.hrl
@@ -160,6 +160,7 @@
           keyfile                    => {undefined, [versions,
                                                      certfile]},
           key_update_at              => {?KEY_USAGE_LIMIT_AES_GCM, [versions]},
+          ktls                       => {false,     [versions]},
           log_level                  => {notice,    [versions]},
           max_handshake_size         => {?DEFAULT_MAX_HANDSHAKE_SIZE, [versions]},
           middlebox_comp_mode        => {true, [versions]},
diff --git a/lib/ssl/src/tls_connection_1_3.erl b/lib/ssl/src/tls_connection_1_3.erl
index 90eb9f2474..e59b9693ca 100644
--- a/lib/ssl/src/tls_connection_1_3.erl
+++ b/lib/ssl/src/tls_connection_1_3.erl
@@ -516,8 +516,7 @@ do_client_start(ServerHello, State0) ->
 
 initial_state(Role, Sender, Host, Port, Socket, {SSLOptions, SocketOptions, Trackers}, User,
 	      {CbModule, DataTag, CloseTag, ErrorTag, PassiveTag}) ->
-    #{erl_dist := IsErlDist,
-      %% Use highest supported version for client/server random nonce generation
+    #{%% Use highest supported version for client/server random nonce generation
       versions := [Version|_],
       client_renegotiation := ClientRenegotiation} = SSLOptions,
     MaxEarlyDataSize = init_max_early_data_size(Role),
@@ -557,12 +556,15 @@ initial_state(Role, Sender, Host, Port, Socket, {SSLOptions, SocketOptions, Trac
        start_or_recv_from = undefined,
        flight_buffer = [],
        protocol_specific = #{sender => Sender,
-                             active_n => internal_active_n(IsErlDist),
+                             active_n => internal_active_n(SSLOptions, Socket),
                              active_n_toggle => true
                             }
       }.
 
-internal_active_n(true) ->
+internal_active_n(#{ktls := true}, Socket) ->
+    inet:setopts(Socket, [{packet, ssl_tls}]),
+    1;
+internal_active_n(#{erl_dist := true}, _) ->
     %% Start with a random number between 1 and ?INTERNAL_ACTIVE_N
     %% In most cases distribution connections are established all at
     %%  the same time, and flow control engages with ?INTERNAL_ACTIVE_N for
@@ -571,7 +573,7 @@ internal_active_n(true) ->
     %%  a random number between 1 and ?INTERNAL_ACTIVE_N helps to spread the
     %%  spike.
     erlang:system_time() rem ?INTERNAL_ACTIVE_N + 1;
-internal_active_n(false) ->
+internal_active_n(#{erl_dist := false}, _) ->
     case application:get_env(ssl, internal_active_n) of
         {ok, N} when is_integer(N) ->
             N;
diff --git a/lib/ssl/src/tls_gen_connection.erl b/lib/ssl/src/tls_gen_connection.erl
index 1442c69927..38d2c36d3f 100644
--- a/lib/ssl/src/tls_gen_connection.erl
+++ b/lib/ssl/src/tls_gen_connection.erl
@@ -325,6 +325,11 @@ handle_info({CloseTag, Socket}, StateName,
             %% is called after all data has been deliver.
             {next_state, StateName, State#state{protocol_specific = PS#{active_n_toggle => true}}, []}
     end;
+handle_info({ssl_tls, Port, Type, {Major, Minor}, Data}, StateName,
+            #state{static_env = #static_env{data_tag = Protocol},
+                   ssl_options = #{ktls := true}} = State0) ->
+    Len = size(Data),
+    handle_info({Protocol, Port, <<Type, Major, Minor, Len:16, Data/binary>>}, StateName, State0);
 handle_info(Msg, StateName, State) ->
     ssl_gen_statem:handle_info(Msg, StateName, State).
 
@@ -632,6 +637,8 @@ next_record(_, #state{protocol_buffers = #protocol_buffers{tls_cipher_texts = []
 next_record(_, State) ->
     {no_record, State}.
 
+flow_ctrl(#state{ssl_options = #{ktls := true}} = State) ->
+    {no_record, State};
 %%% bytes_to_read equals the integer Length arg of ssl:recv
 %%% the actual value is only relevant for packet = raw | 0
 %%% bytes_to_read = undefined means no recv call is ongoing
diff --git a/lib/ssl/test/ssl_dist_SUITE.erl b/lib/ssl/test/ssl_dist_SUITE.erl
index 79e4859b8c..767f37d875 100644
--- a/lib/ssl/test/ssl_dist_SUITE.erl
+++ b/lib/ssl/test/ssl_dist_SUITE.erl
@@ -37,6 +37,8 @@
 %% Test cases
 -export([basic/0,
          basic/1,
+         ktls_basic/0,
+         ktls_basic/1,
          monitor_nodes/1,
          payload/0,
          payload/1,
@@ -68,6 +70,7 @@
 
 %% Apply export
 -export([basic_test/3,
+         ktls_basic_test/3,
          monitor_nodes_test/3,
          payload_test/3,
          plain_options_test/3,
@@ -105,6 +108,7 @@ start_ssl_node_name(Name, Args) ->
 %%--------------------------------------------------------------------
 all() ->
     [basic,
+     ktls_basic,
      monitor_nodes,
      payload,
      dist_port_overload,
@@ -153,6 +157,44 @@ init_per_testcase(plain_verify_options = Case, Config) when is_list(Config) ->
     end,
     common_init(Case, [{old_flags, Flags} | Config]);
 
+init_per_testcase(ktls_basic = Case, Config) when is_list(Config) ->
+    try
+        {ok, Listen} = gen_tcp:listen(0, [{active, false}]),
+        {ok, Port} = inet:port(Listen),
+        {ok, Client} = gen_tcp:connect("localhost", Port, [{active, false}]),
+        {ok, Server} = gen_tcp:accept(Listen),
+        ServerTx = <<4,3,52,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
+                     2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,0,0,0,0,0,0,0,0>>,
+        ServerRx = <<4,3,52,0,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+                     5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,0,0,0,0,0,0,0,0>>,
+        ClientTx = ServerRx,
+        ClientRx = ServerTx,
+        inet:setopts(Server, [{raw, 6, 31, <<"tls">>}]),
+        inet:setopts(Server, [{raw, 282, 1, ServerTx}]),
+        inet:setopts(Server, [{raw, 282, 2, ServerRx}]),
+        inet:setopts(Client, [{raw, 6, 31, <<"tls">>}]),
+        inet:setopts(Client, [{raw, 282, 1, ClientTx}]),
+        inet:setopts(Client, [{raw, 282, 2, ClientRx}]),
+        {ok, [{raw, 6, 31, <<"tls">>}]} = inet:getopts(Server, [{raw, 6, 31, 3}]),
+        {ok, [{raw, 282, 1, ServerTx}]} = inet:getopts(Server, [{raw, 282, 1, 56}]),
+        {ok, [{raw, 6, 31, <<"tls">>}]} = inet:getopts(Client, [{raw, 6, 31, 3}]),
+        {ok, [{raw, 282, 1, ClientTx}]} = inet:getopts(Client, [{raw, 282, 1, 56}]),
+        ok = gen_tcp:send(Client, "client"),
+        {ok, "client"} = gen_tcp:recv(Server, 6, 1000),
+        ok = gen_tcp:send(Server, "server"),
+        {ok, "server"} = gen_tcp:recv(Client, 6, 1000),
+        gen_tcp:close(Server),
+        gen_tcp:close(Client),
+        gen_tcp:close(Listen),
+        common_init(Case, Config)
+    catch
+        Class:Reason:Stacktrace ->
+            {skip, lists:flatten(io_lib:format(
+                "ktls not supported, ~p:~p:~0p",
+                [Class, Reason, Stacktrace]
+            ))}
+    end;
+
 init_per_testcase(Case, Config) when is_list(Config) ->
     common_init(Case, Config).
 
@@ -177,6 +219,12 @@ basic() ->
 basic(Config) when is_list(Config) ->
     gen_dist_test(basic_test, Config).
 
+%%--------------------------------------------------------------------
+ktls_basic() ->
+    [{doc,"Test that two nodes can connect via ssl distribution"}].
+ktls_basic(Config) when is_list(Config) ->
+    gen_dist_test(ktls_basic_test, Config).
+
 %%--------------------------------------------------------------------
 %% Test net_kernel:monitor_nodes with nodedown_reason (OTP-17838)
 monitor_nodes(Config) when is_list(Config) ->
@@ -558,6 +606,47 @@ basic_test(NH1, NH2, _) ->
 		    end)
      end.
 
+ktls_basic_test(NH1, NH2, Config) ->
+    PrivDir = proplists:get_value(priv_dir, Config),
+    SslOpts = [
+        {
+            server,
+            [
+                {certfile, filename:join([PrivDir, "rsa_server_cert.pem"])},
+                {keyfile, filename:join([PrivDir, "rsa_server_key.pem"])},
+                {cacertfile, filename:join([PrivDir, "rsa_server_cacerts.pem"])},
+                {verify, verify_peer},
+                {fail_if_no_peer_cert, true},
+                {versions, ['tlsv1.3']},
+                {ciphers, [#{cipher => aes_256_gcm, key_exchange => any, mac => aead, prf => sha384}]},
+                {ktls, true}
+            ]
+        },
+        {
+            client,
+            [
+                {certfile, filename:join([PrivDir, "rsa_client_cert.pem"])},
+                {keyfile, filename:join([PrivDir, "rsa_client_key.pem"])},
+                {cacertfile, filename:join([PrivDir, "rsa_client_cacerts.pem"])},
+                {verify, verify_peer},
+                {customize_hostname_check, [{match_fun, fun(_, _) -> true end}]},
+                {versions, ['tlsv1.3']},
+                {ciphers, [#{cipher => aes_256_gcm, key_exchange => any, mac => aead, prf => sha384}]},
+                {ktls, true}
+            ]
+        }
+    ],
+    SetEtsOpts = fun () ->
+        spawn(fun () ->
+            ets:new(ssl_dist_opts, [named_table, public]),
+            ets:insert(ssl_dist_opts, SslOpts),
+            timer:sleep(infinity)
+        end)
+    end,
+    apply_on_ssl_node(NH1, SetEtsOpts),
+    apply_on_ssl_node(NH2, SetEtsOpts),
+    basic_test(NH1, NH2, Config).
+
 monitor_nodes_test(NH1, NH2, _) ->
     Node2 = NH2#node_handle.nodename,
 
-- 
2.35.3

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File 3791-Introduce-kernel-TLS-dist-module.patch of Package erlang (Revision b2172ea35270b4e41324f000c94154cb)

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