1 files changed, 132 insertions, 0 deletions
diff --git a/src/network/netdev/macvlan.c b/src/network/netdev/macvlan.c
new file mode 100644
index 0000000..203807e
--- /dev/null
+++ b/src/network/netdev/macvlan.c
@@ -0,0 +1,132 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <net/if.h>
+#include <netinet/in.h>
+#include <linux/if_arp.h>
+
+#include "conf-parser.h"
+#include "macvlan.h"
+#include "macvlan-util.h"
+#include "networkd-network.h"
+#include "parse-util.h"
+
+DEFINE_CONFIG_PARSE_ENUM(config_parse_macvlan_mode, macvlan_mode, MacVlanMode, "Failed to parse macvlan mode");
+
+static int netdev_macvlan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *req) {
+        assert(netdev);
+        assert(netdev->ifname);
+        assert(link);
+        assert(link->network);
+
+        MacVlan *m = netdev->kind == NETDEV_KIND_MACVLAN ? MACVLAN(netdev) : MACVTAP(netdev);
+        int r;
+
+        if (m->mode == NETDEV_MACVLAN_MODE_SOURCE && !set_isempty(m->match_source_mac)) {
+                const struct ether_addr *mac_addr;
+
+                r = sd_netlink_message_append_u32(req, IFLA_MACVLAN_MACADDR_MODE, MACVLAN_MACADDR_SET);
+                if (r < 0)
+                        return r;
+
+                r = sd_netlink_message_open_container(req, IFLA_MACVLAN_MACADDR_DATA);
+                if (r < 0)
+                        return r;
+
+                SET_FOREACH(mac_addr, m->match_source_mac) {
+                        r = sd_netlink_message_append_ether_addr(req, IFLA_MACVLAN_MACADDR, mac_addr);
+                        if (r < 0)
+                                return r;
+                }
+
+                r = sd_netlink_message_close_container(req);
+                if (r < 0)
+                        return r;
+        }
+
+        if (m->mode != _NETDEV_MACVLAN_MODE_INVALID) {
+                r = sd_netlink_message_append_u32(req, IFLA_MACVLAN_MODE, m->mode);
+                if (r < 0)
+                        return r;
+        }
+
+        /* set the nopromisc flag if Promiscuous= of the link is explicitly set to false */
+        if (m->mode == NETDEV_MACVLAN_MODE_PASSTHRU && link->network->promiscuous == 0) {
+                r = sd_netlink_message_append_u16(req, IFLA_MACVLAN_FLAGS, MACVLAN_FLAG_NOPROMISC);
+                if (r < 0)
+                        return r;
+        }
+
+        if (m->bc_queue_length != UINT32_MAX) {
+                r = sd_netlink_message_append_u32(req, IFLA_MACVLAN_BC_QUEUE_LEN, m->bc_queue_length);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+int config_parse_macvlan_broadcast_queue_size(
+                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) {
+
+        assert(filename);
+        assert(section);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        MacVlan *m = ASSERT_PTR(userdata);
+
+        if (isempty(rvalue)) {
+                m->bc_queue_length = UINT32_MAX;
+                return 0;
+        }
+
+        return config_parse_uint32_bounded(
+                        unit, filename, line, section, section_line, lvalue, rvalue,
+                        0, UINT32_MAX - 1, true,
+                        &m->bc_queue_length);
+}
+
+static void macvlan_done(NetDev *netdev) {
+        MacVlan *m = ASSERT_PTR(netdev)->kind == NETDEV_KIND_MACVLAN ? MACVLAN(netdev) : MACVTAP(netdev);
+
+        set_free(m->match_source_mac);
+}
+
+static void macvlan_init(NetDev *netdev) {
+        MacVlan *m = ASSERT_PTR(netdev)->kind == NETDEV_KIND_MACVLAN ? MACVLAN(netdev) : MACVTAP(netdev);
+
+        m->mode = _NETDEV_MACVLAN_MODE_INVALID;
+        m->bc_queue_length = UINT32_MAX;
+}
+
+const NetDevVTable macvtap_vtable = {
+        .object_size = sizeof(MacVlan),
+        .init = macvlan_init,
+        .done = macvlan_done,
+        .sections = NETDEV_COMMON_SECTIONS "MACVTAP\0",
+        .fill_message_create = netdev_macvlan_fill_message_create,
+        .create_type = NETDEV_CREATE_STACKED,
+        .iftype = ARPHRD_ETHER,
+        .generate_mac = true,
+};
+
+const NetDevVTable macvlan_vtable = {
+        .object_size = sizeof(MacVlan),
+        .init = macvlan_init,
+        .done = macvlan_done,
+        .sections = NETDEV_COMMON_SECTIONS "MACVLAN\0",
+        .fill_message_create = netdev_macvlan_fill_message_create,
+        .create_type = NETDEV_CREATE_STACKED,
+        .iftype = ARPHRD_ETHER,
+        .generate_mac = true,
+};