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2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 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>
24 #include <netinet/in.h>
26 #include "openvswitch/types.h"
27 #include <netinet/in_systm.h>
28 #include <netinet/ip.h>
30 int set_nonblocking(int fd
);
31 void xset_nonblocking(int fd
);
32 int set_dscp(int fd
, uint8_t dscp
);
34 int lookup_ip(const char *host_name
, struct in_addr
*address
);
35 int lookup_ipv6(const char *host_name
, struct in6_addr
*address
);
37 int lookup_hostname(const char *host_name
, struct in_addr
*);
39 int get_socket_rcvbuf(int sock
);
40 int check_connection_completion(int fd
);
42 int drain_rcvbuf(int fd
);
44 void drain_fd(int fd
, size_t n_packets
);
46 int make_unix_socket(int style
, bool nonblock
,
47 const char *bind_path
, const char *connect_path
);
48 int get_unix_name_len(socklen_t sun_len
);
50 ovs_be32
guess_netmask(ovs_be32 ip
);
52 bool inet_parse_active(const char *target
, uint16_t default_port
,
53 struct sockaddr_storage
*ssp
);
54 int inet_open_active(int style
, const char *target
, uint16_t default_port
,
55 struct sockaddr_storage
*ssp
, int *fdp
, uint8_t dscp
);
57 bool inet_parse_passive(const char *target
, int default_port
,
58 struct sockaddr_storage
*ssp
);
59 int inet_open_passive(int style
, const char *target
, int default_port
,
60 struct sockaddr_storage
*ssp
, uint8_t dscp
);
62 int read_fully(int fd
, void *, size_t, size_t *bytes_read
);
63 int write_fully(int fd
, const void *, size_t, size_t *bytes_written
);
65 int fsync_parent_dir(const char *file_name
);
66 int get_mtime(const char *file_name
, struct timespec
*mtime
);
68 void xpipe(int fds
[2]);
69 void xpipe_nonblocking(int fds
[2]);
71 char *describe_fd(int fd
);
73 /* Default value of dscp bits for connection between controller and manager.
74 * Value of IPTOS_PREC_INTERNETCONTROL = 0xc0 which is defined
75 * in <netinet/ip.h> is used. */
76 #define DSCP_DEFAULT (IPTOS_PREC_INTERNETCONTROL >> 2)
79 /* Helpers for calling ioctl() on an AF_INET socket. */
81 int af_inet_ioctl(unsigned long int command
, const void *arg
);
82 int af_inet_ifreq_ioctl(const char *name
, struct ifreq
*,
83 unsigned long int cmd
, const char *cmd_name
);
86 /* Functions for working with sockaddr_storage that might contain an IPv4 or
88 uint16_t ss_get_port(const struct sockaddr_storage
*);
89 #define SS_NTOP_BUFSIZE (1 + INET6_ADDRSTRLEN + 1)
90 char *ss_format_address(const struct sockaddr_storage
*,
91 char *buf
, size_t bufsize
);
92 size_t ss_length(const struct sockaddr_storage
*);
93 const char *sock_strerror(int error
);
96 /* Windows defines the 'optval' argument as char * instead of void *. */
97 #define setsockopt(sock, level, optname, optval, optlen) \
98 rpl_setsockopt(sock, level, optname, optval, optlen)
99 static inline int rpl_setsockopt(int sock
, int level
, int optname
,
100 const void *optval
, socklen_t optlen
)
102 return (setsockopt
)(sock
, level
, optname
, optval
, optlen
);
105 #define getsockopt(sock, level, optname, optval, optlen) \
106 rpl_getsockopt(sock, level, optname, optval, optlen)
107 static inline int rpl_getsockopt(int sock
, int level
, int optname
,
108 void *optval
, socklen_t
*optlen
)
110 return (getsockopt
)(sock
, level
, optname
, optval
, optlen
);
114 /* In Windows platform, errno is not set for socket calls.
115 * The last error has to be gotten from WSAGetLastError(). */
116 static inline int sock_errno(void)
119 return WSAGetLastError();
126 #define closesocket close
129 #endif /* socket-util.h */