src/network/netdev/bareudp.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later
   2  * Copyright © 2020 VMware, Inc. */
   3
   4 #include "bareudp.h"
   5 #include "netlink-util.h"
   6 #include "networkd-manager.h"
   7 #include "string-table.h"
   8
   9 static const char* const bare_udp_protocol_table[_BARE_UDP_PROTOCOL_MAX] = {
  10         [BARE_UDP_PROTOCOL_IPV4]    = "ipv4",
  11         [BARE_UDP_PROTOCOL_IPV6]    = "ipv6",
  12         [BARE_UDP_PROTOCOL_MPLS_UC] = "mpls-uc",
  13         [BARE_UDP_PROTOCOL_MPLS_MC] = "mpls-mc",
  14 };
  15
  16 DEFINE_STRING_TABLE_LOOKUP(bare_udp_protocol, BareUDPProtocol);
  17 DEFINE_CONFIG_PARSE_ENUM(config_parse_bare_udp_iftype, bare_udp_protocol, BareUDPProtocol,
  18                          "Failed to parse EtherType=");
  19
  20 static int netdev_bare_udp_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
  21         BareUDP *u;
  22         int r;
  23
  24         assert(netdev);
  25         assert(m);
  26
  27         u = BAREUDP(netdev);
  28
  29         assert(u);
  30
  31         r = sd_netlink_message_append_u16(m, IFLA_BAREUDP_ETHERTYPE, htobe16(u->iftype));
  32         if (r < 0)
  33                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_BAREUDP_ETHERTYPE attribute: %m");
  34
  35         r = sd_netlink_message_append_u16(m, IFLA_BAREUDP_PORT, htobe16(u->dest_port));
  36         if (r < 0)
  37                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_BAREUDP_PORT attribute: %m");
  38
  39         return 0;
  40 }
  41
  42 static int netdev_bare_udp_verify(NetDev *netdev, const char *filename) {
  43         BareUDP *u;
  44
  45         assert(netdev);
  46         assert(filename);
  47
  48         u = BAREUDP(netdev);
  49
  50         assert(u);
  51
  52         if (u->dest_port == 0)
  53                 return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
  54                                                 "%s: BareUDP DesinationPort= is not set. Ignoring.", filename);
  55
  56         if (u->iftype == _BARE_UDP_PROTOCOL_INVALID)
  57                 return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
  58                                                 "%s: BareUDP EtherType= is not set. Ignoring.", filename);
  59
  60         return 0;
  61 }
  62
  63 static void bare_udp_init(NetDev *netdev) {
  64         BareUDP *u;
  65
  66         assert(netdev);
  67
  68         u = BAREUDP(netdev);
  69
  70         assert(u);
  71
  72         u->iftype = _BARE_UDP_PROTOCOL_INVALID;
  73 }
  74
  75 const NetDevVTable bare_udp_vtable = {
  76         .object_size = sizeof(BareUDP),
  77         .sections = NETDEV_COMMON_SECTIONS "BareUDP\0",
  78         .init = bare_udp_init,
  79         .config_verify = netdev_bare_udp_verify,
  80         .fill_message_create = netdev_bare_udp_fill_message_create,
  81         .create_type = NETDEV_CREATE_INDEPENDENT,
  82 };