Merge pull request #14273 from ssahani/ifb

network: introduce IFB

man/systemd.netdev.xml

@@ -182,6 +182,9 @@
           <row><entry><varname>xfrm</varname></entry>
           <entry>A virtual tunnel interface like vti/vti6 but with several advantages.</entry></row>
 
+          <row><entry><varname>ifb</varname></entry>
+          <entry> The Intermediate Functional Block (ifb) pseudo network interface acts as a QoS concentrator for multiple different sources of traffic.</entry></row>
+
         </tbody>
       </tgroup>
     </table>

src/libsystemd/sd-netlink/netlink-types.c

@@ -371,6 +371,7 @@ static const char* const nl_union_link_info_data_table[] = {
         [NL_UNION_LINK_INFO_DATA_MACSEC] = "macsec",
         [NL_UNION_LINK_INFO_DATA_NLMON] = "nlmon",
         [NL_UNION_LINK_INFO_DATA_XFRM] = "xfrm",
+        [NL_UNION_LINK_INFO_DATA_IFB] = "ifb",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);

src/libsystemd/sd-netlink/netlink-types.h

@@ -83,6 +83,7 @@ typedef enum NLUnionLinkInfoData {
         NL_UNION_LINK_INFO_DATA_MACSEC,
         NL_UNION_LINK_INFO_DATA_NLMON,
         NL_UNION_LINK_INFO_DATA_XFRM,
+        NL_UNION_LINK_INFO_DATA_IFB,
         _NL_UNION_LINK_INFO_DATA_MAX,
         _NL_UNION_LINK_INFO_DATA_INVALID = -1
 } NLUnionLinkInfoData;

src/network/meson.build

@@ -7,6 +7,8 @@ sources = files('''
         netdev/bridge.h
         netdev/dummy.c
         netdev/dummy.h
+        netdev/ifb.c
+        netdev/ifb.h
         netdev/ipvlan.c
         netdev/ipvlan.h
         netdev/macvlan.c

src/network/netdev/ifb.c

@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: LGPL-2.1+
+ * Copyright © 2019 VMware, Inc. */
+
+#include "ifb.h"
+
+const NetDevVTable ifb_vtable = {
+        .object_size = sizeof(IntermediateFunctionalBlock),
+        .sections = NETDEV_COMMON_SECTIONS,
+        .create_type = NETDEV_CREATE_INDEPENDENT,
+        .generate_mac = true,
+};

src/network/netdev/ifb.h

@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: LGPL-2.1+
+ * Copyright © 2019 VMware, Inc. */
+
+#pragma once
+
+#include "netdev.h"
+
+typedef struct IntermediateFunctionalBlock {
+        NetDev meta;
+} IntermediateFunctionalBlock;
+
+DEFINE_NETDEV_CAST(IFB, IntermediateFunctionalBlock);
+extern const NetDevVTable ifb_vtable;

src/network/netdev/netdev.c

@@ -12,6 +12,7 @@
 #include "fd-util.h"
 #include "fou-tunnel.h"
 #include "geneve.h"
+#include "ifb.h"
 #include "ipvlan.h"
 #include "l2tp-tunnel.h"
 #include "list.h"
@@ -73,6 +74,7 @@ const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX] = {
         [NETDEV_KIND_MACSEC] = &macsec_vtable,
         [NETDEV_KIND_NLMON] = &nlmon_vtable,
         [NETDEV_KIND_XFRM] = &xfrm_vtable,
+        [NETDEV_KIND_IFB] = &ifb_vtable,
 };
 
 static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
@@ -109,6 +111,7 @@ static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
         [NETDEV_KIND_MACSEC] = "macsec",
         [NETDEV_KIND_NLMON] = "nlmon",
         [NETDEV_KIND_XFRM] = "xfrm",
+        [NETDEV_KIND_IFB] = "ifb",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind);

src/network/netdev/netdev.h

@@ -80,6 +80,7 @@ typedef enum NetDevKind {
         NETDEV_KIND_MACSEC,
         NETDEV_KIND_NLMON,
         NETDEV_KIND_XFRM,
+        NETDEV_KIND_IFB,
         _NETDEV_KIND_MAX,
         _NETDEV_KIND_TUNNEL, /* Used by config_parse_stacked_netdev() */
         _NETDEV_KIND_INVALID = -1

test/test-network/conf/25-ifb.netdev

@@ -0,0 +1,3 @@
+[NetDev]
+Kind=ifb
+Name=ifb99

test/test-network/conf/netdev-link-local-addressing-yes.network

@@ -10,6 +10,7 @@ Name=vxcan99
 Name=vxcan-peer
 Name=vrf99
 Name=geneve99
+Name=ifb99
 Name=ipiptun99
 Name=nlmon99
 Name=xfrm99

test/test-network/systemd-networkd-tests.py

@@ -556,6 +556,7 @@ class NetworkdNetDevTests(unittest.TestCase, Utilities):
         'gretun97',
         'gretun98',
         'gretun99',
+        'ifb99',
         'ip6gretap98',
         'ip6gretap99',
         'ip6gretun96',
@@ -633,6 +634,7 @@ class NetworkdNetDevTests(unittest.TestCase, Utilities):
         '25-gre-tunnel-local-any.netdev',
         '25-gre-tunnel-remote-any.netdev',
         '25-gre-tunnel.netdev',
+        '25-ifb.netdev',
         '25-ip6gretap-tunnel-local-any.netdev',
         '25-ip6gretap-tunnel.netdev',
         '25-ip6gre-tunnel-any-any.netdev',
@@ -1379,6 +1381,13 @@ class NetworkdNetDevTests(unittest.TestCase, Utilities):
 
         self.wait_online(['nlmon99:carrier'])
 
+    @expectedFailureIfModuleIsNotAvailable('ifb')
+    def test_ifb(self):
+        copy_unit_to_networkd_unit_path('25-ifb.netdev', 'netdev-link-local-addressing-yes.network')
+        start_networkd()
+
+        self.wait_online(['ifb99:degraded'])
+
 class NetworkdL2TPTests(unittest.TestCase, Utilities):
 
     links =[