networkd: Add support for ipvlan L3s and flags (#7726)

This works supports to configure L3S mode and flags
such as bridge, private and vepa

src/network/netdev/ipvlan.c

@@ -27,11 +27,21 @@
 static const char* const ipvlan_mode_table[_NETDEV_IPVLAN_MODE_MAX] = {
         [NETDEV_IPVLAN_MODE_L2] = "L2",
         [NETDEV_IPVLAN_MODE_L3] = "L3",
+        [NETDEV_IPVLAN_MODE_L3S] = "L3S",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(ipvlan_mode, IPVlanMode);
 DEFINE_CONFIG_PARSE_ENUM(config_parse_ipvlan_mode, ipvlan_mode, IPVlanMode, "Failed to parse ipvlan mode");
 
+static const char* const ipvlan_flags_table[_NETDEV_IPVLAN_FLAGS_MAX] = {
+        [NETDEV_IPVLAN_FLAGS_BRIGDE] = "bridge",
+        [NETDEV_IPVLAN_FLAGS_PRIVATE] = "private",
+        [NETDEV_IPVLAN_FLAGS_VEPA] = "vepa",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(ipvlan_flags, IPVlanFlags);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_ipvlan_flags, ipvlan_flags, IPVlanFlags, "Failed to parse ipvlan flags");
+
 static int netdev_ipvlan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *req) {
         IPVlan *m;
         int r;
@@ -50,6 +60,12 @@ static int netdev_ipvlan_fill_message_create(NetDev *netdev, Link *link, sd_netl
                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPVLAN_MODE attribute: %m");
         }
 
+        if (m->flags != _NETDEV_IPVLAN_FLAGS_INVALID) {
+                r = sd_netlink_message_append_u16(req, IFLA_IPVLAN_FLAGS, m->flags);
+                if (r < 0)
+                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPVLAN_FLAGS attribute: %m");
+        }
+
         return 0;
 }
 
@@ -63,6 +79,7 @@ static void ipvlan_init(NetDev *n) {
         assert(m);
 
         m->mode = _NETDEV_IPVLAN_MODE_INVALID;
+        m->mode = _NETDEV_IPVLAN_FLAGS_INVALID;
 }
 
 const NetDevVTable ipvlan_vtable = {

src/network/netdev/ipvlan.h

@@ -20,20 +20,33 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <linux/if_link.h>
+
 #include "missing.h"
 #include "netdev/netdev.h"
 
+
 typedef enum IPVlanMode {
         NETDEV_IPVLAN_MODE_L2 = IPVLAN_MODE_L2,
         NETDEV_IPVLAN_MODE_L3 = IPVLAN_MODE_L3,
+        NETDEV_IPVLAN_MODE_L3S = IPVLAN_MODE_L3S,
         _NETDEV_IPVLAN_MODE_MAX,
         _NETDEV_IPVLAN_MODE_INVALID = -1
 } IPVlanMode;
 
+typedef enum IPVlanFlags {
+        NETDEV_IPVLAN_FLAGS_BRIGDE,
+        NETDEV_IPVLAN_FLAGS_PRIVATE = IPVLAN_F_PRIVATE,
+        NETDEV_IPVLAN_FLAGS_VEPA = IPVLAN_F_VEPA,
+        _NETDEV_IPVLAN_FLAGS_MAX,
+        _NETDEV_IPVLAN_FLAGS_INVALID = -1
+} IPVlanFlags;
+
 typedef struct IPVlan {
         NetDev meta;
 
         IPVlanMode mode;
+        IPVlanFlags flags;
 } IPVlan;
 
 DEFINE_NETDEV_CAST(IPVLAN, IPVlan);
@@ -42,4 +55,8 @@ extern const NetDevVTable ipvlan_vtable;
 const char *ipvlan_mode_to_string(IPVlanMode d) _const_;
 IPVlanMode ipvlan_mode_from_string(const char *d) _pure_;
 
+const char *ipvlan_flags_to_string(IPVlanFlags d) _const_;
+IPVlanFlags ipvlan_flags_from_string(const char *d) _pure_;
+
 int config_parse_ipvlan_mode(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);
+int config_parse_ipvlan_flags(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);

src/network/netdev/netdev-gperf.gperf

@@ -48,6 +48,7 @@ VLAN.ReorderHeader,          config_parse_tristate,                0,
 MACVLAN.Mode,                config_parse_macvlan_mode,            0,                             offsetof(MacVlan, mode)
 MACVTAP.Mode,                config_parse_macvlan_mode,            0,                             offsetof(MacVlan, mode)
 IPVLAN.Mode,                 config_parse_ipvlan_mode,             0,                             offsetof(IPVlan, mode)
+IPVLAN.Flags,                config_parse_ipvlan_flags,             0,                            offsetof(IPVlan, flags)
 Tunnel.Local,                config_parse_tunnel_address,          0,                             offsetof(Tunnel, local)
 Tunnel.Remote,               config_parse_tunnel_address,          0,                             offsetof(Tunnel, remote)
 Tunnel.TOS,                  config_parse_unsigned,                0,                             offsetof(Tunnel, tos)