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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/network/netdev/macvlan.c
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/network/netdev/macvlan.c')
-rw-r--r--src/network/netdev/macvlan.c132
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,
+};