xref: /openbmc/qemu/net/tap_int.h (revision ed75658a)
1 /*
2  * QEMU System Emulator
3  *
4  * Copyright (c) 2003-2008 Fabrice Bellard
5  * Copyright (c) 2009 Red Hat, Inc.
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a copy
8  * of this software and associated documentation files (the "Software"), to deal
9  * in the Software without restriction, including without limitation the rights
10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11  * copies of the Software, and to permit persons to whom the Software is
12  * furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23  * THE SOFTWARE.
24  */
25 
26 #ifndef NET_TAP_INT_H
27 #define NET_TAP_INT_H
28 
29 #include "qapi/qapi-types-net.h"
30 
31 int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
32              int vnet_hdr_required, int mq_required, Error **errp);
33 
34 ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen);
35 
36 void tap_set_sndbuf(int fd, const NetdevTapOptions *tap, Error **errp);
37 int tap_probe_vnet_hdr(int fd, Error **errp);
38 int tap_probe_vnet_hdr_len(int fd, int len);
39 int tap_probe_has_ufo(int fd);
40 int tap_probe_has_uso(int fd);
41 void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo,
42                         int uso4, int uso6);
43 void tap_fd_set_vnet_hdr_len(int fd, int len);
44 int tap_fd_set_vnet_le(int fd, int vnet_is_le);
45 int tap_fd_set_vnet_be(int fd, int vnet_is_be);
46 int tap_fd_enable(int fd);
47 int tap_fd_disable(int fd);
48 int tap_fd_get_ifname(int fd, char *ifname);
49 int tap_fd_set_steering_ebpf(int fd, int prog_fd);
50 
51 #endif /* NET_TAP_INT_H */
52