Merge pull request #9165 from ssahani/networkd-netdevsim

networkd: introduce netdev "Netdevsim" Driver

man/systemd.netdev.xml

@@ -174,6 +174,8 @@
           <row><entry><varname>wireguard</varname></entry>
           <entry>WireGuard Secure Network Tunnel.</entry></row>
 
+          <row><entry><varname>netdevsim</varname></entry>
+          <entry> A simulator. This simulated networking device is used for testing various networking APIs and at this time is particularly focused on testing hardware offloading related interfaces.</entry></row>
         </tbody>
       </tgroup>
     </table>

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

@@ -325,6 +325,7 @@ static const char* const nl_union_link_info_data_table[] = {
         [NL_UNION_LINK_INFO_DATA_GENEVE] = "geneve",
         [NL_UNION_LINK_INFO_DATA_VXCAN] = "vxcan",
         [NL_UNION_LINK_INFO_DATA_WIREGUARD] = "wireguard",
+        [NL_UNION_LINK_INFO_DATA_NETDEVSIM] = "netdevsim",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);

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

@@ -82,6 +82,7 @@ typedef enum NLUnionLinkInfoData {
         NL_UNION_LINK_INFO_DATA_GENEVE,
         NL_UNION_LINK_INFO_DATA_VXCAN,
         NL_UNION_LINK_INFO_DATA_WIREGUARD,
+        NL_UNION_LINK_INFO_DATA_NETDEVSIM,
         _NL_UNION_LINK_INFO_DATA_MAX,
         _NL_UNION_LINK_INFO_DATA_INVALID = -1
 } NLUnionLinkInfoData;

src/network/meson.build

@@ -35,6 +35,8 @@ sources = files('''
         netdev/vxcan.h
         netdev/wireguard.c
         netdev/wireguard.h
+        netdev/netdevsim.c
+        netdev/netdevsim.h
         networkd-address-label.c
         networkd-address-label.h
         networkd-address-pool.c

src/network/netdev/netdev.c

@@ -37,6 +37,7 @@
 #include "netdev/vcan.h"
 #include "netdev/vxcan.h"
 #include "netdev/wireguard.h"
+#include "netdev/netdevsim.h"
 
 const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX] = {
         [NETDEV_KIND_BRIDGE] = &bridge_vtable,
@@ -64,6 +65,7 @@ const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX] = {
         [NETDEV_KIND_GENEVE] = &geneve_vtable,
         [NETDEV_KIND_VXCAN] = &vxcan_vtable,
         [NETDEV_KIND_WIREGUARD] = &wireguard_vtable,
+        [NETDEV_KIND_NETDEVSIM] = &netdevsim_vtable,
 };
 
 static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
@@ -92,6 +94,7 @@ static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
         [NETDEV_KIND_GENEVE] = "geneve",
         [NETDEV_KIND_VXCAN] = "vxcan",
         [NETDEV_KIND_WIREGUARD] = "wireguard",
+        [NETDEV_KIND_NETDEVSIM] = "netdevsim",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind);

src/network/netdev/netdev.h

@@ -48,6 +48,7 @@ typedef enum NetDevKind {
         NETDEV_KIND_GENEVE,
         NETDEV_KIND_VXCAN,
         NETDEV_KIND_WIREGUARD,
+        NETDEV_KIND_NETDEVSIM,
         _NETDEV_KIND_MAX,
         _NETDEV_KIND_INVALID = -1
 } NetDevKind;

src/network/netdev/netdevsim.c

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+/***
+  This file is part of systemd.
+
+  Copyright 2018 Susant Sahani
+***/
+
+#include "netdev/netdevsim.h"
+#include "missing.h"
+
+const NetDevVTable netdevsim_vtable = {
+        .object_size = sizeof(NetDevSim),
+        .sections = "Match\0NetDev\0",
+        .create_type = NETDEV_CREATE_INDEPENDENT,
+};

src/network/netdev/netdevsim.h

@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2018 Susant Sahani
+***/
+
+typedef struct NetDevSim NetDevSim;
+
+#include "netdev/netdev.h"
+
+struct NetDevSim {
+        NetDev meta;
+};
+
+DEFINE_NETDEV_CAST(NETDEVSIM, NetDevSim);
+extern const NetDevVTable netdevsim_vtable;

src/network/netdev/vxcan.h

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
 /***