src/network/netdev/vxcan.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <linux/can/vxcan.h>
   4
   5 #include "vxcan.h"
   6
   7 static int netdev_vxcan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
   8         VxCan *v;
   9         int r;
  10
  11         assert(netdev);
  12         assert(!link);
  13         assert(m);
  14
  15         v = VXCAN(netdev);
  16
  17         assert(v);
  18
  19         r = sd_netlink_message_open_container(m, VXCAN_INFO_PEER);
  20         if (r < 0)
  21                 return log_netdev_error_errno(netdev, r, "Could not append VXCAN_INFO_PEER attribute: %m");
  22
  23         if (v->ifname_peer) {
  24                 r = sd_netlink_message_append_string(m, IFLA_IFNAME, v->ifname_peer);
  25                 if (r < 0)
  26                         return log_netdev_error_errno(netdev, r, "Failed to add vxcan netlink interface peer name: %m");
  27         }
  28
  29         r = sd_netlink_message_close_container(m);
  30         if (r < 0)
  31                 return log_netdev_error_errno(netdev, r, "Could not append VXCAN_INFO_PEER attribute: %m");
  32
  33         return r;
  34 }
  35
  36 static int netdev_vxcan_verify(NetDev *netdev, const char *filename) {
  37         VxCan *v;
  38
  39         assert(netdev);
  40         assert(filename);
  41
  42         v = VXCAN(netdev);
  43
  44         assert(v);
  45
  46         if (!v->ifname_peer) {
  47                 log_netdev_warning(netdev, "VxCan NetDev without peer name configured in %s. Ignoring", filename);
  48                 return -EINVAL;
  49         }
  50
  51         return 0;
  52 }
  53
  54 static void vxcan_done(NetDev *n) {
  55         VxCan *v;
  56
  57         assert(n);
  58
  59         v = VXCAN(n);
  60
  61         assert(v);
  62
  63         free(v->ifname_peer);
  64 }
  65
  66 const NetDevVTable vxcan_vtable = {
  67         .object_size = sizeof(VxCan),
  68         .sections = NETDEV_COMMON_SECTIONS "VXCAN\0",
  69         .done = vxcan_done,
  70         .fill_message_create = netdev_vxcan_fill_message_create,
  71         .create_type = NETDEV_CREATE_INDEPENDENT,
  72         .config_verify = netdev_vxcan_verify,
  73         .generate_mac = true,
  74 };