1 | /* SPDX-License-Identifier: MIT */ |
2 | /* |
3 | * Copyright (c) 2003-2008 Fabrice Bellard |
4 | * Copyright (c) 2010-2019 Red Hat, Inc. |
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 | #ifndef UTIL_H_ |
25 | #define UTIL_H_ |
26 | |
27 | #include <stdlib.h> |
28 | #include <stdio.h> |
29 | #include <assert.h> |
30 | #include <errno.h> |
31 | #include <unistd.h> |
32 | #include <sys/types.h> |
33 | #include <sys/stat.h> |
34 | #include <unistd.h> |
35 | #include <inttypes.h> |
36 | |
37 | #ifdef _WIN32 |
38 | #include <winsock2.h> |
39 | #include <windows.h> |
40 | #else |
41 | #include <sys/socket.h> |
42 | #include <netinet/tcp.h> |
43 | #include <netinet/in.h> |
44 | #endif |
45 | |
46 | #if defined(_WIN32) && (defined(__x86_64__) || defined(__i386__)) |
47 | #define SLIRP_PACKED __attribute__((gcc_struct, packed)) |
48 | #else |
49 | #define SLIRP_PACKED __attribute__((packed)) |
50 | #endif |
51 | |
52 | #ifndef DIV_ROUND_UP |
53 | #define DIV_ROUND_UP(n, d) (((n) + (d)-1) / (d)) |
54 | #endif |
55 | |
56 | #ifndef container_of |
57 | #define container_of(ptr, type, member) \ |
58 | __extension__({ \ |
59 | void *__mptr = (void *)(ptr); \ |
60 | ((type *)(__mptr - offsetof(type, member))); \ |
61 | }) |
62 | #endif |
63 | |
64 | #if defined(_WIN32) /* CONFIG_IOVEC */ |
65 | #if !defined(IOV_MAX) /* XXX: to avoid duplicate with QEMU osdep.h */ |
66 | struct iovec { |
67 | void *iov_base; |
68 | size_t iov_len; |
69 | }; |
70 | #endif |
71 | #else |
72 | #include <sys/uio.h> |
73 | #endif |
74 | |
75 | #define stringify(s) tostring(s) |
76 | #define tostring(s) #s |
77 | |
78 | #define SCALE_MS 1000000 |
79 | |
80 | #define ETH_ALEN 6 |
81 | #define ETH_HLEN 14 |
82 | #define ETH_P_IP (0x0800) /* Internet Protocol packet */ |
83 | #define ETH_P_ARP (0x0806) /* Address Resolution packet */ |
84 | #define ETH_P_IPV6 (0x86dd) |
85 | #define ETH_P_VLAN (0x8100) |
86 | #define ETH_P_DVLAN (0x88a8) |
87 | #define ETH_P_NCSI (0x88f8) |
88 | #define ETH_P_UNKNOWN (0xffff) |
89 | |
90 | /* FIXME: remove me when made standalone */ |
91 | #ifdef _WIN32 |
92 | #undef accept |
93 | #undef bind |
94 | #undef closesocket |
95 | #undef connect |
96 | #undef getpeername |
97 | #undef getsockname |
98 | #undef getsockopt |
99 | #undef ioctlsocket |
100 | #undef listen |
101 | #undef recv |
102 | #undef recvfrom |
103 | #undef send |
104 | #undef sendto |
105 | #undef setsockopt |
106 | #undef shutdown |
107 | #undef socket |
108 | #endif |
109 | |
110 | #ifdef _WIN32 |
111 | #define connect slirp_connect_wrap |
112 | int slirp_connect_wrap(int fd, const struct sockaddr *addr, int addrlen); |
113 | #define listen slirp_listen_wrap |
114 | int slirp_listen_wrap(int fd, int backlog); |
115 | #define bind slirp_bind_wrap |
116 | int slirp_bind_wrap(int fd, const struct sockaddr *addr, int addrlen); |
117 | #define socket slirp_socket_wrap |
118 | int slirp_socket_wrap(int domain, int type, int protocol); |
119 | #define accept slirp_accept_wrap |
120 | int slirp_accept_wrap(int fd, struct sockaddr *addr, int *addrlen); |
121 | #define shutdown slirp_shutdown_wrap |
122 | int slirp_shutdown_wrap(int fd, int how); |
123 | #define getpeername slirp_getpeername_wrap |
124 | int slirp_getpeername_wrap(int fd, struct sockaddr *addr, int *addrlen); |
125 | #define getsockname slirp_getsockname_wrap |
126 | int slirp_getsockname_wrap(int fd, struct sockaddr *addr, int *addrlen); |
127 | #define send slirp_send_wrap |
128 | ssize_t slirp_send_wrap(int fd, const void *buf, size_t len, int flags); |
129 | #define sendto slirp_sendto_wrap |
130 | ssize_t slirp_sendto_wrap(int fd, const void *buf, size_t len, int flags, |
131 | const struct sockaddr *dest_addr, int addrlen); |
132 | #define recv slirp_recv_wrap |
133 | ssize_t slirp_recv_wrap(int fd, void *buf, size_t len, int flags); |
134 | #define recvfrom slirp_recvfrom_wrap |
135 | ssize_t slirp_recvfrom_wrap(int fd, void *buf, size_t len, int flags, |
136 | struct sockaddr *src_addr, int *addrlen); |
137 | #define closesocket slirp_closesocket_wrap |
138 | int slirp_closesocket_wrap(int fd); |
139 | #define ioctlsocket slirp_ioctlsocket_wrap |
140 | int slirp_ioctlsocket_wrap(int fd, int req, void *val); |
141 | #define getsockopt slirp_getsockopt_wrap |
142 | int slirp_getsockopt_wrap(int sockfd, int level, int optname, void *optval, |
143 | int *optlen); |
144 | #define setsockopt slirp_setsockopt_wrap |
145 | int slirp_setsockopt_wrap(int sockfd, int level, int optname, |
146 | const void *optval, int optlen); |
147 | #define inet_aton slirp_inet_aton |
148 | int slirp_inet_aton(const char *cp, struct in_addr *ia); |
149 | #else |
150 | #define closesocket(s) close(s) |
151 | #define ioctlsocket(s, r, v) ioctl(s, r, v) |
152 | #endif |
153 | |
154 | int slirp_socket(int domain, int type, int protocol); |
155 | void slirp_set_nonblock(int fd); |
156 | |
157 | static inline int slirp_socket_set_nodelay(int fd) |
158 | { |
159 | int v = 1; |
160 | return setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &v, sizeof(v)); |
161 | } |
162 | |
163 | static inline int slirp_socket_set_fast_reuse(int fd) |
164 | { |
165 | #ifndef _WIN32 |
166 | int v = 1; |
167 | return setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)); |
168 | #else |
169 | /* Enabling the reuse of an endpoint that was used by a socket still in |
170 | * TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows |
171 | * fast reuse is the default and SO_REUSEADDR does strange things. So we |
172 | * don't have to do anything here. More info can be found at: |
173 | * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */ |
174 | return 0; |
175 | #endif |
176 | } |
177 | |
178 | void slirp_pstrcpy(char *buf, int buf_size, const char *str); |
179 | |
180 | #endif |
181 | |