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-rw-r--r--lib/kernel/doc/src/inet.xml9
-rw-r--r--lib/kernel/src/inet.erl10
-rw-r--r--lib/kernel/src/inet_int.hrl1
-rw-r--r--lib/kernel/test/gen_tcp_api_SUITE.erl21
4 files changed, 35 insertions, 6 deletions
diff --git a/lib/kernel/doc/src/inet.xml b/lib/kernel/doc/src/inet.xml
index 3f4e3684f4..d907cef7d3 100644
--- a/lib/kernel/doc/src/inet.xml
+++ b/lib/kernel/doc/src/inet.xml
@@ -1092,6 +1092,15 @@ setcap cap_sys_admin,cap_sys_ptrace,cap_dac_read_search+epi beam.smp</code>
The option is ignored on platforms where it is not
implemented. Use with caution.</p>
</item>
+ <tag><c>{tclass, Integer}</c></tag>
+ <item>
+ <p>
+ Sets <c>IPV6_TCLASS IP</c> level options on platforms
+ where this is implemented. The behavior and allowed range
+ varies between different systems.
+ The option is ignored on platforms where it is not
+ implemented. Use with caution.</p>
+ </item>
</taglist>
<p>In addition to these options, <em>raw</em>
option specifications can be used. The raw options are
diff --git a/lib/kernel/src/inet.erl b/lib/kernel/src/inet.erl
index 75dd800c6b..f5c13ecdd7 100644
--- a/lib/kernel/src/inet.erl
+++ b/lib/kernel/src/inet.erl
@@ -677,7 +677,7 @@ parse_strict_address(Addr) ->
%% Return a list of available options
options() ->
[
- tos, priority, reuseaddr, keepalive, dontroute, linger,
+ tos, tclass, priority, reuseaddr, keepalive, dontroute, linger,
broadcast, sndbuf, recbuf, nodelay, ipv6_v6only,
buffer, header, active, packet, deliver, mode,
multicast_if, multicast_ttl, multicast_loop,
@@ -698,7 +698,7 @@ stats() ->
%% Available options for tcp:connect
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
connect_options() ->
- [tos, priority, reuseaddr, keepalive, linger, sndbuf, recbuf, nodelay,
+ [tos, tclass, priority, reuseaddr, keepalive, linger, sndbuf, recbuf, nodelay,
header, active, packet, packet_size, buffer, mode, deliver, line_delimiter,
exit_on_close, high_watermark, low_watermark, high_msgq_watermark,
low_msgq_watermark, send_timeout, send_timeout_close, delay_send, raw,
@@ -766,7 +766,7 @@ con_add(Name, Val, #connect_opts{} = R, Opts, AllOpts) ->
%% Available options for tcp:listen
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
listen_options() ->
- [tos, priority, reuseaddr, keepalive, linger, sndbuf, recbuf, nodelay,
+ [tos, tclass, priority, reuseaddr, keepalive, linger, sndbuf, recbuf, nodelay,
header, active, packet, buffer, mode, deliver, backlog, ipv6_v6only,
exit_on_close, high_watermark, low_watermark, high_msgq_watermark,
low_msgq_watermark, send_timeout, send_timeout_close, delay_send,
@@ -846,7 +846,7 @@ tcp_module_1(Opts, Address) ->
%% Available options for udp:open
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
udp_options() ->
- [tos, priority, reuseaddr, sndbuf, recbuf, header, active, buffer, mode,
+ [tos, tclass, priority, reuseaddr, sndbuf, recbuf, header, active, buffer, mode,
deliver, ipv6_v6only,
broadcast, dontroute, multicast_if, multicast_ttl, multicast_loop,
add_membership, drop_membership, read_packets,raw,
@@ -917,7 +917,7 @@ udp_module(Opts) ->
% (*) passing of open FDs ("fdopen") is not supported.
sctp_options() ->
[ % The following are generic inet options supported for SCTP sockets:
- mode, active, buffer, tos, priority, dontroute, reuseaddr, linger, sndbuf,
+ mode, active, buffer, tos, tclass, priority, dontroute, reuseaddr, linger, sndbuf,
recbuf, ipv6_v6only, high_msgq_watermark, low_msgq_watermark,
% Other options are SCTP-specific (though they may be similar to their
diff --git a/lib/kernel/src/inet_int.hrl b/lib/kernel/src/inet_int.hrl
index c8a8962e78..4e8f59a3b9 100644
--- a/lib/kernel/src/inet_int.hrl
+++ b/lib/kernel/src/inet_int.hrl
@@ -153,6 +153,7 @@
-define(INET_LOPT_NETNS, 38).
-define(INET_LOPT_TCP_SHOW_ECONNRESET, 39).
-define(INET_LOPT_LINE_DELIM, 40).
+-define(INET_OPT_TCLASS, 41).
% Specific SCTP options: separate range:
-define(SCTP_OPT_RTOINFO, 100).
-define(SCTP_OPT_ASSOCINFO, 101).
diff --git a/lib/kernel/test/gen_tcp_api_SUITE.erl b/lib/kernel/test/gen_tcp_api_SUITE.erl
index 77ec89b4f4..d630032480 100644
--- a/lib/kernel/test/gen_tcp_api_SUITE.erl
+++ b/lib/kernel/test/gen_tcp_api_SUITE.erl
@@ -38,7 +38,7 @@
t_local_basic/1, t_local_unbound/1, t_local_fdopen/1,
t_local_fdopen_listen/1, t_local_fdopen_listen_unbound/1,
t_local_fdopen_connect/1, t_local_fdopen_connect_unbound/1,
- t_local_abstract/1]).
+ t_local_abstract/1, t_accept_inet6_tclass/1]).
-export([getsockfd/0,closesockfd/1]).
@@ -50,6 +50,7 @@ all() ->
[{group, t_accept}, {group, t_connect}, {group, t_recv},
t_shutdown_write, t_shutdown_both, t_shutdown_error,
t_shutdown_async, t_fdopen, t_fdconnect, t_implicit_inet6,
+ t_accept_inet6_tclass,
{group, t_local}].
groups() ->
@@ -521,6 +522,24 @@ local_handshake(S, SAddr, C, CAddr) ->
SData = ok(gen_tcp:recv(C, length(SData))),
ok.
+t_accept_inet6_tclass(Config) when is_list(Config) ->
+ TClassOpt = {tclass,8#56 bsl 2}, % Expedited forwarding
+ case gen_tcp:listen(0, [inet6,TClassOpt]) of
+ {ok,L} ->
+ LPort = ok(inet:port(L)),
+ Loopback = {0,0,0,0,0,0,0,1},
+ Sa = ok(gen_tcp:connect(Loopback, LPort, [])),
+ Sb = ok(gen_tcp:accept(L)),
+ [TClassOpt] = ok(inet:getopts(Sb, [tclass])),
+ ok = gen_tcp:close(Sb),
+ ok = gen_tcp:close(Sa),
+ ok = gen_tcp:close(L),
+ ok;
+ {error,_} ->
+ {skip,"IPv6 not supported"}
+ end.
+
+
%%% Utilities
%% Calls M:F/length(A), which should return a timeout error, and complete