summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--man/systemd.netdev.xml40
-rw-r--r--src/network/meson.build2
-rw-r--r--src/network/netdev/netdev-gperf.gperf4
-rw-r--r--src/network/netdev/netdev.c3
-rw-r--r--src/network/netdev/netdev.h2
-rw-r--r--src/network/netdev/wlan.c260
-rw-r--r--src/network/netdev/wlan.h22
-rw-r--r--test/fuzz/fuzz-netdev-parser/directives.netdev4
8 files changed, 337 insertions, 0 deletions
diff --git a/man/systemd.netdev.xml b/man/systemd.netdev.xml
index 2207852ae3..1f94e3d599 100644
--- a/man/systemd.netdev.xml
+++ b/man/systemd.netdev.xml
@@ -192,6 +192,9 @@
<row><entry><varname>ipoib</varname></entry>
<entry>An IP over Infiniband subinterface.</entry></row>
+
+ <row><entry><varname>virtual-wlan</varname></entry>
+ <entry>A virtual local wireless network (WLAN) interface.</entry></row>
</tbody>
</tgroup>
</table>
@@ -2180,6 +2183,43 @@
</refsect1>
<refsect1>
+ <title>[VirtualWLAN] Section Options</title>
+ <para>The [VirtualWLAN] section only applies to virtual WLAN interfaces, and accepts the following
+ keys:</para>
+
+ <variablelist class='network-directives'>
+ <varlistentry>
+ <term><varname>PhysicalDevice=</varname></term>
+ <listitem>
+ <para>Specifies the name or index of the WLAN physical WLAN device (e.g. <literal>0</literal>
+ or <literal>phy0</literal>). The list of the physical WLAN devices that exist os the host can
+ be obtained by <command>iw phy</command> command. This option is mandatory.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>Type=</varname></term>
+ <listitem>
+ <para>Specifies the type of the interface. Takes one of the <literal>ad-hoc</literal>,
+ <literal>station</literal>, <literal>ap</literal>, <literal>ap-vlan</literal>,
+ <literal>wds</literal>, <literal>monitor</literal>, <literal>mesh-point</literal>,
+ <literal>p2p-client</literal>, <literal>p2p-go</literal>, <literal>p2p-device</literal>,
+ <literal>ocb</literal>, and <literal>nan</literal>. This option is mandatory.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>WDS=</varname></term>
+ <listitem>
+ <para>Enables the Wireless Distribution System (WDS) mode on the interface. The mode is also
+ known as the <literal>4 address mode</literal>. Takes a boolean value. Defaults to unset, and
+ the kernel's default will be used.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
<title>Examples</title>
<example>
<title>/etc/systemd/network/25-bridge.netdev</title>
diff --git a/src/network/meson.build b/src/network/meson.build
index 1b8aa80cfe..ca48acae91 100644
--- a/src/network/meson.build
+++ b/src/network/meson.build
@@ -53,6 +53,8 @@ sources = files('''
netdev/vxcan.h
netdev/wireguard.c
netdev/wireguard.h
+ netdev/wlan.c
+ netdev/wlan.h
netdev/xfrm.c
netdev/xfrm.h
networkd-address-generation.c
diff --git a/src/network/netdev/netdev-gperf.gperf b/src/network/netdev/netdev-gperf.gperf
index 0b87e35087..2fec1da06b 100644
--- a/src/network/netdev/netdev-gperf.gperf
+++ b/src/network/netdev/netdev-gperf.gperf
@@ -27,6 +27,7 @@ _Pragma("GCC diagnostic ignored \"-Wimplicit-fallthrough\"")
#include "vxcan.h"
#include "vxlan.h"
#include "wireguard.h"
+#include "wlan.h"
#include "xfrm.h"
%}
struct ConfigPerfItem;
@@ -258,3 +259,6 @@ BatmanAdvanced.RoutingAlgorithm, config_parse_batadv_routing_algorithm,
IPoIB.PartitionKey, config_parse_ipoib_pkey, 0, offsetof(IPoIB, pkey)
IPoIB.Mode, config_parse_ipoib_mode, 0, offsetof(IPoIB, mode)
IPoIB.IgnoreUserspaceMulticastGroups, config_parse_tristate, 0, offsetof(IPoIB, umcast)
+VirtualWLAN.PhysicalDevice, config_parse_wiphy, 0, 0
+VirtualWLAN.Type, config_parse_wlan_iftype, 0, offsetof(WLan, iftype)
+VirtualWLAN.WDS, config_parse_tristate, 0, offsetof(WLan, wds)
diff --git a/src/network/netdev/netdev.c b/src/network/netdev/netdev.c
index 48b263eaa6..8f68a50297 100644
--- a/src/network/netdev/netdev.c
+++ b/src/network/netdev/netdev.c
@@ -47,6 +47,7 @@
#include "vxcan.h"
#include "vxlan.h"
#include "wireguard.h"
+#include "wlan.h"
#include "xfrm.h"
const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX] = {
@@ -86,6 +87,7 @@ const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX] = {
[NETDEV_KIND_VXCAN] = &vxcan_vtable,
[NETDEV_KIND_VXLAN] = &vxlan_vtable,
[NETDEV_KIND_WIREGUARD] = &wireguard_vtable,
+ [NETDEV_KIND_WLAN] = &wlan_vtable,
[NETDEV_KIND_XFRM] = &xfrm_vtable,
};
@@ -126,6 +128,7 @@ static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
[NETDEV_KIND_VXCAN] = "vxcan",
[NETDEV_KIND_VXLAN] = "vxlan",
[NETDEV_KIND_WIREGUARD] = "wireguard",
+ [NETDEV_KIND_WLAN] = "virtual-wlan",
[NETDEV_KIND_XFRM] = "xfrm",
};
diff --git a/src/network/netdev/netdev.h b/src/network/netdev/netdev.h
index 6382d4e620..be26d1969d 100644
--- a/src/network/netdev/netdev.h
+++ b/src/network/netdev/netdev.h
@@ -43,6 +43,7 @@
"-VXLAN\0" \
"-WireGuard\0" \
"-WireGuardPeer\0" \
+ "-VirtualWLAN\0" \
"-Xfrm\0"
typedef enum NetDevKind {
@@ -82,6 +83,7 @@ typedef enum NetDevKind {
NETDEV_KIND_VXCAN,
NETDEV_KIND_VXLAN,
NETDEV_KIND_WIREGUARD,
+ NETDEV_KIND_WLAN,
NETDEV_KIND_XFRM,
_NETDEV_KIND_MAX,
_NETDEV_KIND_TUNNEL, /* Used by config_parse_stacked_netdev() */
diff --git a/src/network/netdev/wlan.c b/src/network/netdev/wlan.c
new file mode 100644
index 0000000000..17fff4d482
--- /dev/null
+++ b/src/network/netdev/wlan.c
@@ -0,0 +1,260 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <net/if_arp.h>
+
+#include "sd-netlink.h"
+
+#include "netlink-util.h"
+#include "networkd-manager.h"
+#include "networkd-wiphy.h"
+#include "parse-util.h"
+#include "wifi-util.h"
+#include "wlan.h"
+
+static void wlan_done(NetDev *netdev) {
+ WLan *w;
+
+ assert(netdev);
+
+ w = WLAN(netdev);
+
+ assert(w);
+
+ w->wiphy_name = mfree(w->wiphy_name);
+}
+
+static void wlan_init(NetDev *netdev) {
+ WLan *w;
+
+ assert(netdev);
+
+ w = WLAN(netdev);
+
+ assert(w);
+
+ w->wiphy_index = UINT32_MAX;
+ w->wds = -1;
+}
+
+static int wlan_get_wiphy(NetDev *netdev, Wiphy **ret) {
+ WLan *w;
+
+ assert(netdev);
+
+ w = WLAN(netdev);
+
+ assert(w);
+
+ if (w->wiphy_name)
+ return wiphy_get_by_name(netdev->manager, w->wiphy_name, ret);
+
+ return wiphy_get_by_index(netdev->manager, w->wiphy_index, ret);
+}
+
+static int wlan_is_ready_to_create(NetDev *netdev, Link *link) {
+ return wlan_get_wiphy(netdev, NULL) >= 0;
+}
+
+static int wlan_fill_message(NetDev *netdev, sd_netlink_message *m) {
+ Wiphy *wiphy;
+ WLan *w;
+ int r;
+
+ assert(netdev);
+ assert(m);
+
+ w = WLAN(netdev);
+
+ assert(w);
+
+ r = wlan_get_wiphy(netdev, &wiphy);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_message_append_u32(m, NL80211_ATTR_WIPHY, wiphy->index);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_message_append_string(m, NL80211_ATTR_IFNAME, netdev->ifname);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_message_append_u32(m, NL80211_ATTR_IFTYPE, w->iftype);
+ if (r < 0)
+ return r;
+
+ if (!hw_addr_is_null(&netdev->hw_addr) && netdev->hw_addr.length == ETH_ALEN) {
+ r = sd_netlink_message_append_ether_addr(m, NL80211_ATTR_MAC, &netdev->hw_addr.ether);
+ if (r < 0)
+ return r;
+ }
+
+ if (w->wds >= 0) {
+ r = sd_netlink_message_append_u8(m, NL80211_ATTR_4ADDR, w->wds);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int wlan_create_handler(sd_netlink *genl, sd_netlink_message *m, NetDev *netdev) {
+ int r;
+
+ assert(netdev);
+ assert(netdev->state != _NETDEV_STATE_INVALID);
+
+ r = sd_netlink_message_get_errno(m);
+ if (IN_SET(r, -EEXIST, -ENFILE))
+ /* Unlike the other netdevs, the kernel may return -ENFILE. See dev_alloc_name(). */
+ log_netdev_info(netdev, "WLAN interface exists, using existing without changing its parameters.");
+ else if (r < 0) {
+ log_netdev_warning_errno(netdev, r, "WLAN interface could not be created: %m");
+ netdev_enter_failed(netdev);
+
+ return 1;
+ }
+
+ log_netdev_debug(netdev, "WLAN interface is created.");
+ return 1;
+}
+
+static int wlan_create(NetDev *netdev) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
+ int r;
+
+ assert(netdev);
+ assert(netdev->manager);
+ assert(netdev->manager->genl);
+
+ r = sd_genl_message_new(netdev->manager->genl, NL80211_GENL_NAME, NL80211_CMD_NEW_INTERFACE, &m);
+ if (r < 0)
+ return log_netdev_warning_errno(netdev, r, "Failed to allocate netlink message: %m");
+
+ r = wlan_fill_message(netdev, m);
+ if (r < 0)
+ return log_netdev_warning_errno(netdev, r, "Failed to fill netlink message: %m");
+
+ r = netlink_call_async(netdev->manager->genl, NULL, m, wlan_create_handler,
+ netdev_destroy_callback, netdev);
+ if (r < 0)
+ return log_netdev_warning_errno(netdev, r, "Failed to send netlink message: %m");
+
+ netdev_ref(netdev);
+ return 0;
+}
+
+static int wlan_verify(NetDev *netdev, const char *filename) {
+ WLan *w;
+
+ assert(netdev);
+ assert(filename);
+
+ w = WLAN(netdev);
+
+ assert(w);
+
+ if (w->iftype == NL80211_IFTYPE_UNSPECIFIED)
+ return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
+ "%s: WLAN interface type is not specified, ignoring.",
+ filename);
+
+ if (w->wiphy_index == UINT32_MAX && isempty(w->wiphy_name))
+ return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
+ "%s: physical WLAN device is not specified, ignoring.",
+ filename);
+
+ return 0;
+}
+
+int config_parse_wiphy(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ WLan *w = userdata;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(userdata);
+
+ if (isempty(rvalue)) {
+ w->wiphy_name = mfree(w->wiphy_name);
+ w->wiphy_index = UINT32_MAX;
+ return 0;
+ }
+
+ r = safe_atou32(rvalue, &w->wiphy_index);
+ if (r >= 0) {
+ w->wiphy_name = mfree(w->wiphy_name);
+ return 0;
+ }
+
+ r = free_and_strdup_warn(&w->wiphy_name, rvalue);
+ if (r < 0)
+ return r;
+
+ w->wiphy_index = UINT32_MAX;
+ return 0;
+}
+
+int config_parse_wlan_iftype(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ enum nl80211_iftype t, *iftype = data;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (isempty(rvalue)) {
+ *iftype = NL80211_IFTYPE_UNSPECIFIED;
+ return 0;
+ }
+
+ t = nl80211_iftype_from_string(rvalue);
+ /* We reuse the kernel provided enum which does not contain negative value. So, the cast
+ * below is mandatory. Otherwise, the check below always passes. */
+ if ((int) t < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, t,
+ "Failed to parse wlan interface type, ignoring assignment: %s",
+ rvalue);
+ return 0;
+ }
+
+ *iftype = t;
+ return 0;
+}
+
+const NetDevVTable wlan_vtable = {
+ .object_size = sizeof(WLan),
+ .init = wlan_init,
+ .done = wlan_done,
+ .sections = NETDEV_COMMON_SECTIONS "VirtualWLAN\0",
+ .is_ready_to_create = wlan_is_ready_to_create,
+ .create = wlan_create,
+ .create_type = NETDEV_CREATE_INDEPENDENT,
+ .config_verify = wlan_verify,
+ .iftype = ARPHRD_ETHER,
+ .generate_mac = true,
+ .skip_netdev_kind_check = true,
+};
diff --git a/src/network/netdev/wlan.h b/src/network/netdev/wlan.h
new file mode 100644
index 0000000000..bcc2dbcfd0
--- /dev/null
+++ b/src/network/netdev/wlan.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <linux/nl80211.h>
+
+#include "conf-parser.h"
+#include "netdev.h"
+
+typedef struct WLan {
+ NetDev meta;
+
+ char *wiphy_name;
+ uint32_t wiphy_index;
+ enum nl80211_iftype iftype;
+ int wds; /* tristate */
+} WLan;
+
+DEFINE_NETDEV_CAST(WLAN, WLan);
+extern const NetDevVTable wlan_vtable;
+
+CONFIG_PARSER_PROTOTYPE(config_parse_wiphy);
+CONFIG_PARSER_PROTOTYPE(config_parse_wlan_iftype);
diff --git a/test/fuzz/fuzz-netdev-parser/directives.netdev b/test/fuzz/fuzz-netdev-parser/directives.netdev
index 584c1c2136..1ba273232c 100644
--- a/test/fuzz/fuzz-netdev-parser/directives.netdev
+++ b/test/fuzz/fuzz-netdev-parser/directives.netdev
@@ -246,3 +246,7 @@ RoutingAlgorithm=
PartitionKey=
Mode=
IgnoreUserspaceMulticastGroups=
+[VirtualWLAN]
+PhysicalDevice=
+Type=
+WDS=
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 05:22:47 +0100