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Commit | Line | Data |
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064af421 | 1 | /* |
afc1d536 | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc. |
064af421 | 3 | * |
a14bc59f BP |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
064af421 | 7 | * |
a14bc59f BP |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
064af421 BP |
15 | */ |
16 | ||
17 | #ifndef SOCKET_UTIL_H | |
18 | #define SOCKET_UTIL_H 1 | |
19 | ||
0f0b5401 | 20 | #include <errno.h> |
064af421 | 21 | #include <sys/types.h> |
8e47be77 | 22 | #include <sys/socket.h> |
72af4a85 | 23 | #include <sys/time.h> |
dd23522f | 24 | #include <sys/un.h> |
064af421 BP |
25 | #include <netinet/in.h> |
26 | #include <stdbool.h> | |
dbba996b | 27 | #include "openvswitch/types.h" |
14235530 | 28 | #include <netinet/in_systm.h> |
f125905c | 29 | #include <netinet/ip.h> |
064af421 BP |
30 | |
31 | int set_nonblocking(int fd); | |
a0505c49 | 32 | void xset_nonblocking(int fd); |
b7cefbf7 | 33 | void setsockopt_tcp_nodelay(int fd); |
afc1d536 | 34 | int set_dscp(int fd, int family, uint8_t dscp); |
a0505c49 | 35 | |
9835576b | 36 | bool addr_is_ipv6(const char *host_name); |
064af421 | 37 | int lookup_ip(const char *host_name, struct in_addr *address); |
d31f1109 | 38 | int lookup_ipv6(const char *host_name, struct in6_addr *address); |
13f2ef97 BP |
39 | |
40 | int lookup_hostname(const char *host_name, struct in_addr *); | |
41 | ||
c1c19657 | 42 | int get_socket_rcvbuf(int sock); |
064af421 | 43 | int check_connection_completion(int fd); |
064af421 | 44 | void drain_fd(int fd, size_t n_packets); |
dbba996b | 45 | ovs_be32 guess_netmask(ovs_be32 ip); |
064af421 | 46 | |
52f8a75e | 47 | bool inet_parse_active(const char *target, uint16_t default_port, |
e731d71b | 48 | struct sockaddr_storage *ssp); |
4f2eb9a7 | 49 | int inet_open_active(int style, const char *target, uint16_t default_port, |
e731d71b | 50 | struct sockaddr_storage *ssp, int *fdp, uint8_t dscp); |
d98fa503 | 51 | |
995337c4 | 52 | bool inet_parse_passive(const char *target, int default_port, |
e731d71b | 53 | struct sockaddr_storage *ssp); |
36775dad | 54 | int inet_open_passive(int style, const char *target, int default_port, |
b52ecd96 GS |
55 | struct sockaddr_storage *ssp, uint8_t dscp, |
56 | bool kernel_print_port); | |
78ff0270 | 57 | |
064af421 BP |
58 | int read_fully(int fd, void *, size_t, size_t *bytes_read); |
59 | int write_fully(int fd, const void *, size_t, size_t *bytes_written); | |
60 | ||
8e71cf88 | 61 | int fsync_parent_dir(const char *file_name); |
26efd256 | 62 | int get_mtime(const char *file_name, struct timespec *mtime); |
8e71cf88 | 63 | |
f89ffb0e BP |
64 | char *describe_fd(int fd); |
65 | ||
f125905c MM |
66 | /* Default value of dscp bits for connection between controller and manager. |
67 | * Value of IPTOS_PREC_INTERNETCONTROL = 0xc0 which is defined | |
cea15768 EJ |
68 | * in <netinet/ip.h> is used. */ |
69 | #define DSCP_DEFAULT (IPTOS_PREC_INTERNETCONTROL >> 2) | |
f125905c | 70 | |
e731d71b AS |
71 | /* Functions for working with sockaddr_storage that might contain an IPv4 or |
72 | * IPv6 address. */ | |
73 | uint16_t ss_get_port(const struct sockaddr_storage *); | |
74 | #define SS_NTOP_BUFSIZE (1 + INET6_ADDRSTRLEN + 1) | |
75 | char *ss_format_address(const struct sockaddr_storage *, | |
76 | char *buf, size_t bufsize); | |
77 | size_t ss_length(const struct sockaddr_storage *); | |
b26f46a4 | 78 | const char *sock_strerror(int error); |
e731d71b | 79 | |
7f1e1c7f GS |
80 | #ifndef _WIN32 |
81 | void xpipe(int fds[2]); | |
82 | void xpipe_nonblocking(int fds[2]); | |
83 | ||
84 | int drain_rcvbuf(int fd); | |
85 | ||
86 | int make_unix_socket(int style, bool nonblock, | |
87 | const char *bind_path, const char *connect_path); | |
dd23522f | 88 | int get_unix_name_len(const struct sockaddr_un *sun, socklen_t sun_len); |
7f1e1c7f | 89 | |
8a8c1b93 BP |
90 | /* Universal sendmmsg support. |
91 | * | |
92 | * Some platforms, such as new enough Linux and FreeBSD, support sendmmsg, but | |
93 | * other platforms (or older ones) do not. We add the following infrastructure | |
94 | * to allow all code to use sendmmsg, regardless of platform support: | |
95 | * | |
96 | * - For platforms that lack sendmmsg entirely, we emulate it. | |
97 | * | |
98 | * - Some platforms have sendmmsg() in the C library but not in the kernel. | |
99 | * For example, this is true if a Linux system has a newer glibc with an | |
100 | * old kernel. To compensate, even if sendmmsg() appears to be available, | |
101 | * we still wrap it with a handler that uses our emulation if sendmmsg() | |
102 | * returns ENOSYS. | |
103 | */ | |
104 | #ifndef HAVE_STRUCT_MMSGHDR_MSG_LEN | |
105 | struct mmsghdr { | |
106 | struct msghdr msg_hdr; | |
107 | unsigned int msg_len; | |
108 | }; | |
109 | #endif | |
110 | #ifndef HAVE_SENDMMSG | |
111 | int sendmmsg(int, struct mmsghdr *, unsigned int, unsigned int); | |
112 | #else | |
113 | #define sendmmsg wrap_sendmmsg | |
114 | int wrap_sendmmsg(int, struct mmsghdr *, unsigned int, unsigned int); | |
115 | #endif | |
116 | ||
7f1e1c7f GS |
117 | /* Helpers for calling ioctl() on an AF_INET socket. */ |
118 | struct ifreq; | |
119 | int af_inet_ioctl(unsigned long int command, const void *arg); | |
120 | int af_inet_ifreq_ioctl(const char *name, struct ifreq *, | |
121 | unsigned long int cmd, const char *cmd_name); | |
122 | ||
123 | #define closesocket close | |
124 | #endif | |
125 | ||
5ea1366b | 126 | #ifdef _WIN32 |
a35f3d61 AS |
127 | static inline int make_unix_socket(int style, bool nonblock, |
128 | const char *bind_path, | |
129 | const char *connect_path) | |
130 | { | |
131 | return -EINVAL; | |
132 | } | |
133 | ||
5ea1366b GS |
134 | /* Windows defines the 'optval' argument as char * instead of void *. */ |
135 | #define setsockopt(sock, level, optname, optval, optlen) \ | |
136 | rpl_setsockopt(sock, level, optname, optval, optlen) | |
137 | static inline int rpl_setsockopt(int sock, int level, int optname, | |
138 | const void *optval, socklen_t optlen) | |
139 | { | |
140 | return (setsockopt)(sock, level, optname, optval, optlen); | |
141 | } | |
9390ef7f GS |
142 | |
143 | #define getsockopt(sock, level, optname, optval, optlen) \ | |
144 | rpl_getsockopt(sock, level, optname, optval, optlen) | |
145 | static inline int rpl_getsockopt(int sock, int level, int optname, | |
146 | void *optval, socklen_t *optlen) | |
147 | { | |
148 | return (getsockopt)(sock, level, optname, optval, optlen); | |
149 | } | |
5ea1366b GS |
150 | #endif |
151 | ||
0f0b5401 GS |
152 | /* In Windows platform, errno is not set for socket calls. |
153 | * The last error has to be gotten from WSAGetLastError(). */ | |
154 | static inline int sock_errno(void) | |
155 | { | |
156 | #ifdef _WIN32 | |
157 | return WSAGetLastError(); | |
158 | #else | |
159 | return errno; | |
160 | #endif | |
161 | } | |
162 | ||
064af421 | 163 | #endif /* socket-util.h */ |