src/network/netdev/bareudp.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later
   2  * Copyright © 2020 VMware, Inc. */
   3
   4 #include <netinet/in.h>
   5 #include <linux/if_arp.h>
   6
   7 #include "bareudp.h"
   8 #include "netlink-util.h"
   9 #include "networkd-manager.h"
  10 #include "string-table.h"
  11
  12 static const char* const bare_udp_protocol_table[_BARE_UDP_PROTOCOL_MAX] = {
  13         [BARE_UDP_PROTOCOL_IPV4]    = "ipv4",
  14         [BARE_UDP_PROTOCOL_IPV6]    = "ipv6",
  15         [BARE_UDP_PROTOCOL_MPLS_UC] = "mpls-uc",
  16         [BARE_UDP_PROTOCOL_MPLS_MC] = "mpls-mc",
  17 };
  18
  19 DEFINE_STRING_TABLE_LOOKUP(bare_udp_protocol, BareUDPProtocol);
  20 DEFINE_CONFIG_PARSE_ENUM(config_parse_bare_udp_iftype, bare_udp_protocol, BareUDPProtocol,
  21                          "Failed to parse EtherType=");
  22
  23 static int netdev_bare_udp_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
  24         assert(m);
  25
  26         BareUDP *u = BAREUDP(netdev);
  27         int r;
  28
  29         r = sd_netlink_message_append_u16(m, IFLA_BAREUDP_ETHERTYPE, htobe16(u->iftype));
  30         if (r < 0)
  31                 return r;
  32
  33         r = sd_netlink_message_append_u16(m, IFLA_BAREUDP_PORT, htobe16(u->dest_port));
  34         if (r < 0)
  35                 return r;
  36
  37         return 0;
  38 }
  39
  40 static int netdev_bare_udp_verify(NetDev *netdev, const char *filename) {
  41         assert(filename);
  42
  43         BareUDP *u = BAREUDP(netdev);
  44
  45         if (u->dest_port == 0)
  46                 return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
  47                                                 "%s: BareUDP DesinationPort= is not set. Ignoring.", filename);
  48
  49         if (u->iftype == _BARE_UDP_PROTOCOL_INVALID)
  50                 return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
  51                                                 "%s: BareUDP EtherType= is not set. Ignoring.", filename);
  52
  53         return 0;
  54 }
  55
  56 static void bare_udp_init(NetDev *netdev) {
  57         BareUDP *u = BAREUDP(netdev);
  58
  59         u->iftype = _BARE_UDP_PROTOCOL_INVALID;
  60 }
  61
  62 const NetDevVTable bare_udp_vtable = {
  63         .object_size = sizeof(BareUDP),
  64         .sections = NETDEV_COMMON_SECTIONS "BareUDP\0",
  65         .init = bare_udp_init,
  66         .config_verify = netdev_bare_udp_verify,
  67         .fill_message_create = netdev_bare_udp_fill_message_create,
  68         .create_type = NETDEV_CREATE_INDEPENDENT,
  69         .iftype = ARPHRD_NONE,
  70 };