net/tap-stub.c

   1 /*
   2  * QEMU System Emulator
   3  *
   4  * Copyright (c) 2003-2008 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "qemu/osdep.h"
  26 #include "qapi/error.h"
  27 #include "tap_int.h"
  28
  29 int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
  30              int vnet_hdr_required, int mq_required, Error **errp)
  31 {
  32     error_setg(errp, "tap is not supported in this build");
  33     return -1;
  34 }
  35
  36 void tap_set_sndbuf(int fd, const NetdevTapOptions *tap, Error **errp)
  37 {
  38 }
  39
  40 int tap_probe_vnet_hdr(int fd, Error **errp)
  41 {
  42     return 0;
  43 }
  44
  45 int tap_probe_has_ufo(int fd)
  46 {
  47     return 0;
  48 }
  49
  50 int tap_probe_vnet_hdr_len(int fd, int len)
  51 {
  52     return 0;
  53 }
  54
  55 void tap_fd_set_vnet_hdr_len(int fd, int len)
  56 {
  57 }
  58
  59 int tap_fd_set_vnet_le(int fd, int is_le)
  60 {
  61     return -EINVAL;
  62 }
  63
  64 int tap_fd_set_vnet_be(int fd, int is_be)
  65 {
  66     return -EINVAL;
  67 }
  68
  69 void tap_fd_set_offload(int fd, int csum, int tso4,
  70                         int tso6, int ecn, int ufo)
  71 {
  72 }
  73
  74 int tap_fd_enable(int fd)
  75 {
  76     return -1;
  77 }
  78
  79 int tap_fd_disable(int fd)
  80 {
  81     return -1;
  82 }
  83
  84 int tap_fd_get_ifname(int fd, char *ifname)
  85 {
  86     return -1;
  87 }