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2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #define SOCKET_UTIL_H 1
21 #include <sys/types.h>
22 #include <sys/socket.h>
25 #include <netinet/in.h>
27 #include "openvswitch/types.h"
28 #include <netinet/in_systm.h>
29 #include <netinet/ip.h>
31 int set_nonblocking(int fd
);
32 void xset_nonblocking(int fd
);
33 void setsockopt_tcp_nodelay(int fd
);
34 int set_dscp(int fd
, int family
, uint8_t dscp
);
36 bool addr_is_ipv6(const char *host_name
);
37 int lookup_ip(const char *host_name
, struct in_addr
*address
);
38 int lookup_ipv6(const char *host_name
, struct in6_addr
*address
);
40 int lookup_hostname(const char *host_name
, struct in_addr
*);
42 int get_socket_rcvbuf(int sock
);
43 int check_connection_completion(int fd
);
44 void drain_fd(int fd
, size_t n_packets
);
45 ovs_be32
guess_netmask(ovs_be32 ip
);
47 bool inet_parse_active(const char *target
, uint16_t default_port
,
48 struct sockaddr_storage
*ssp
);
49 int inet_open_active(int style
, const char *target
, uint16_t default_port
,
50 struct sockaddr_storage
*ssp
, int *fdp
, uint8_t dscp
);
52 bool inet_parse_passive(const char *target
, int default_port
,
53 struct sockaddr_storage
*ssp
);
54 int inet_open_passive(int style
, const char *target
, int default_port
,
55 struct sockaddr_storage
*ssp
, uint8_t dscp
,
56 bool kernel_print_port
);
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
);
61 int fsync_parent_dir(const char *file_name
);
62 int get_mtime(const char *file_name
, struct timespec
*mtime
);
64 char *describe_fd(int fd
);
66 /* Default value of dscp bits for connection between controller and manager.
67 * Value of IPTOS_PREC_INTERNETCONTROL = 0xc0 which is defined
68 * in <netinet/ip.h> is used. */
69 #define DSCP_DEFAULT (IPTOS_PREC_INTERNETCONTROL >> 2)
71 /* Functions for working with sockaddr_storage that might contain an IPv4 or
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
*);
78 const char *sock_strerror(int error
);
81 void xpipe(int fds
[2]);
82 void xpipe_nonblocking(int fds
[2]);
84 int drain_rcvbuf(int fd
);
86 int make_unix_socket(int style
, bool nonblock
,
87 const char *bind_path
, const char *connect_path
);
88 int get_unix_name_len(const struct sockaddr_un
*sun
, socklen_t sun_len
);
90 /* Helpers for calling ioctl() on an AF_INET socket. */
92 int af_inet_ioctl(unsigned long int command
, const void *arg
);
93 int af_inet_ifreq_ioctl(const char *name
, struct ifreq
*,
94 unsigned long int cmd
, const char *cmd_name
);
96 #define closesocket close
100 static inline int make_unix_socket(int style
, bool nonblock
,
101 const char *bind_path
,
102 const char *connect_path
)
107 /* Windows defines the 'optval' argument as char * instead of void *. */
108 #define setsockopt(sock, level, optname, optval, optlen) \
109 rpl_setsockopt(sock, level, optname, optval, optlen)
110 static inline int rpl_setsockopt(int sock
, int level
, int optname
,
111 const void *optval
, socklen_t optlen
)
113 return (setsockopt
)(sock
, level
, optname
, optval
, optlen
);
116 #define getsockopt(sock, level, optname, optval, optlen) \
117 rpl_getsockopt(sock, level, optname, optval, optlen)
118 static inline int rpl_getsockopt(int sock
, int level
, int optname
,
119 void *optval
, socklen_t
*optlen
)
121 return (getsockopt
)(sock
, level
, optname
, optval
, optlen
);
125 /* In Windows platform, errno is not set for socket calls.
126 * The last error has to be gotten from WSAGetLastError(). */
127 static inline int sock_errno(void)
130 return WSAGetLastError();
136 #endif /* socket-util.h */