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2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 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
20 #include <sys/types.h>
21 #include <sys/socket.h>
23 #include <netinet/in.h>
25 #include "openvswitch/types.h"
26 #include <netinet/in_systm.h>
27 #include <netinet/ip.h>
29 int set_nonblocking(int fd
);
30 void xset_nonblocking(int fd
);
31 int set_dscp(int fd
, uint8_t dscp
);
33 int get_max_fds(void);
35 int lookup_ip(const char *host_name
, struct in_addr
*address
);
36 int lookup_ipv6(const char *host_name
, struct in6_addr
*address
);
38 int lookup_hostname(const char *host_name
, struct in_addr
*);
40 int get_socket_rcvbuf(int sock
);
41 int check_connection_completion(int fd
);
42 int drain_rcvbuf(int fd
);
43 void drain_fd(int fd
, size_t n_packets
);
44 int make_unix_socket(int style
, bool nonblock
,
45 const char *bind_path
, const char *connect_path
);
46 int get_unix_name_len(socklen_t sun_len
);
47 ovs_be32
guess_netmask(ovs_be32 ip
);
48 int get_null_fd(void);
50 bool inet_parse_active(const char *target
, uint16_t default_port
,
51 struct sockaddr_in
*sinp
);
52 int inet_open_active(int style
, const char *target
, uint16_t default_port
,
53 struct sockaddr_in
*sinp
, int *fdp
, uint8_t dscp
);
55 bool inet_parse_passive(const char *target
, int default_port
,
56 struct sockaddr_in
*sinp
);
57 int inet_open_passive(int style
, const char *target
, int default_port
,
58 struct sockaddr_in
*sinp
, uint8_t dscp
);
60 int read_fully(int fd
, void *, size_t, size_t *bytes_read
);
61 int write_fully(int fd
, const void *, size_t, size_t *bytes_written
);
63 int fsync_parent_dir(const char *file_name
);
64 int get_mtime(const char *file_name
, struct timespec
*mtime
);
66 void xpipe(int fds
[2]);
67 void xpipe_nonblocking(int fds
[2]);
69 char *describe_fd(int fd
);
71 /* Default value of dscp bits for connection between controller and manager.
72 * Value of IPTOS_PREC_INTERNETCONTROL = 0xc0 which is defined
73 * in <netinet/ip.h> is used. */
74 #define DSCP_DEFAULT (IPTOS_PREC_INTERNETCONTROL >> 2)
76 /* Maximum number of fds that we support sending or receiving at one time
77 * across a Unix domain socket. */
78 #define SOUTIL_MAX_FDS 8
81 size_t iovec_len(const struct iovec
*iovs
, size_t n_iovs
);
82 bool iovec_is_empty(const struct iovec
*iovs
, size_t n_iovs
);
84 /* Functions particularly useful for Unix domain sockets. */
85 void xsocketpair(int domain
, int type
, int protocol
, int fds
[2]);
86 int send_iovec_and_fds(int sock
,
87 const struct iovec
*iovs
, size_t n_iovs
,
88 const int fds
[], size_t n_fds
);
89 int send_iovec_and_fds_fully(int sock
,
90 const struct iovec
*iovs
, size_t n_iovs
,
91 const int fds
[], size_t n_fds
,
92 size_t skip_bytes
, size_t *bytes_sent
);
93 int send_iovec_and_fds_fully_block(int sock
,
94 const struct iovec
*iovs
, size_t n_iovs
,
95 const int fds
[], size_t n_fds
);
96 int recv_data_and_fds(int sock
,
97 void *data
, size_t size
,
98 int fds
[SOUTIL_MAX_FDS
], size_t *n_fdsp
);
100 /* Helpers for calling ioctl() on an AF_INET socket. */
102 int af_inet_ioctl(unsigned long int command
, const void *arg
);
103 int af_inet_ifreq_ioctl(const char *name
, struct ifreq
*,
104 unsigned long int cmd
, const char *cmd_name
);
106 #endif /* socket-util.h */