src/network/netdev/ipvlan.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <net/if.h>
   4 #include <netinet/in.h>
   5 #include <linux/if_arp.h>
   6
   7 #include "conf-parser.h"
   8 #include "ipvlan.h"
   9 #include "ipvlan-util.h"
  10 #include "networkd-link.h"
  11 #include "string-util.h"
  12
  13 DEFINE_CONFIG_PARSE_ENUM(config_parse_ipvlan_mode, ipvlan_mode, IPVlanMode, "Failed to parse ipvlan mode");
  14 DEFINE_CONFIG_PARSE_ENUM(config_parse_ipvlan_flags, ipvlan_flags, IPVlanFlags, "Failed to parse ipvlan flags");
  15
  16 static int netdev_ipvlan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *req) {
  17         IPVlan *m;
  18         int r;
  19
  20         assert(netdev);
  21         assert(link);
  22         assert(netdev->ifname);
  23
  24         if (netdev->kind == NETDEV_KIND_IPVLAN)
  25                 m = IPVLAN(netdev);
  26         else
  27                 m = IPVTAP(netdev);
  28
  29         assert(m);
  30
  31         if (m->mode != _NETDEV_IPVLAN_MODE_INVALID) {
  32                 r = sd_netlink_message_append_u16(req, IFLA_IPVLAN_MODE, m->mode);
  33                 if (r < 0)
  34                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPVLAN_MODE attribute: %m");
  35         }
  36
  37         if (m->flags != _NETDEV_IPVLAN_FLAGS_INVALID) {
  38                 r = sd_netlink_message_append_u16(req, IFLA_IPVLAN_FLAGS, m->flags);
  39                 if (r < 0)
  40                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPVLAN_FLAGS attribute: %m");
  41         }
  42
  43         return 0;
  44 }
  45
  46 static void ipvlan_init(NetDev *n) {
  47         IPVlan *m;
  48
  49         assert(n);
  50
  51         if (n->kind == NETDEV_KIND_IPVLAN)
  52                 m = IPVLAN(n);
  53         else
  54                 m = IPVTAP(n);
  55
  56         assert(m);
  57
  58         m->mode = _NETDEV_IPVLAN_MODE_INVALID;
  59         m->flags = _NETDEV_IPVLAN_FLAGS_INVALID;
  60 }
  61
  62 const NetDevVTable ipvlan_vtable = {
  63         .object_size = sizeof(IPVlan),
  64         .init = ipvlan_init,
  65         .sections = NETDEV_COMMON_SECTIONS "IPVLAN\0",
  66         .fill_message_create = netdev_ipvlan_fill_message_create,
  67         .create_type = NETDEV_CREATE_STACKED,
  68         .iftype = ARPHRD_ETHER,
  69         .generate_mac = true,
  70 };
  71
  72 const NetDevVTable ipvtap_vtable = {
  73         .object_size = sizeof(IPVlan),
  74         .init = ipvlan_init,
  75         .sections = NETDEV_COMMON_SECTIONS "IPVTAP\0",
  76         .fill_message_create = netdev_ipvlan_fill_message_create,
  77         .create_type = NETDEV_CREATE_STACKED,
  78         .iftype = ARPHRD_ETHER,
  79         .generate_mac = true,
  80 };
  81
  82 IPVlanMode link_get_ipvlan_mode(Link *link) {
  83         NetDev *netdev;
  84
  85         if (!streq_ptr(link->kind, "ipvlan"))
  86                 return _NETDEV_IPVLAN_MODE_INVALID;
  87
  88         if (netdev_get(link->manager, link->ifname, &netdev) < 0)
  89                 return _NETDEV_IPVLAN_MODE_INVALID;
  90
  91         if (netdev->kind != NETDEV_KIND_IPVLAN)
  92                 return _NETDEV_IPVLAN_MODE_INVALID;
  93
  94         return IPVLAN(netdev)->mode;
  95 }