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
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_storage *ssp);
52 int inet_open_active(int style, const char *target, uint16_t default_port,
53 struct sockaddr_storage *ssp, int *fdp, uint8_t dscp);
55 bool inet_parse_passive(const char *target, int default_port,
56 struct sockaddr_storage *ssp);
57 int inet_open_passive(int style, const char *target, int default_port,
58 struct sockaddr_storage *ssp, 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 /* Helpers for calling ioctl() on an AF_INET socket. */
78 int af_inet_ioctl(unsigned long int command, const void *arg);
79 int af_inet_ifreq_ioctl(const char *name, struct ifreq *,
80 unsigned long int cmd, const char *cmd_name);
82 /* Functions for working with sockaddr_storage that might contain an IPv4 or
84 uint16_t ss_get_port(const struct sockaddr_storage *);
85 #define SS_NTOP_BUFSIZE (1 + INET6_ADDRSTRLEN + 1)
86 char *ss_format_address(const struct sockaddr_storage *,
87 char *buf, size_t bufsize);
88 size_t ss_length(const struct sockaddr_storage *);
90 #endif /* socket-util.h */