/*
- * Copyright (c) 2008, 2009 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#ifndef SOCKET_UTIL_H
#define SOCKET_UTIL_H 1
+#include <errno.h>
#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/un.h>
#include <netinet/in.h>
#include <stdbool.h>
+#include "openvswitch/types.h"
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+
+struct ds;
int set_nonblocking(int fd);
-int get_max_fds(void);
+void xset_nonblocking(int fd);
+void setsockopt_tcp_nodelay(int fd);
+int set_dscp(int fd, int family, uint8_t dscp);
+
+bool addr_is_ipv6(const char *host_name);
int lookup_ip(const char *host_name, struct in_addr *address);
-int get_socket_error(int sock);
+int lookup_ipv6(const char *host_name, struct in6_addr *address);
+
+int lookup_hostname(const char *host_name, struct in_addr *);
+
+int get_socket_rcvbuf(int sock);
int check_connection_completion(int fd);
-int drain_rcvbuf(int fd);
void drain_fd(int fd, size_t n_packets);
-int make_unix_socket(int style, bool nonblock, bool passcred,
- const char *bind_path, const char *connect_path);
-int get_unix_name_len(socklen_t sun_len);
-uint32_t guess_netmask(uint32_t ip);
-int get_null_fd(void);
+ovs_be32 guess_netmask(ovs_be32 ip);
+
+void inet_parse_host_port_tokens(char *s, char **hostp, char **portp);
+void inet_parse_port_host_tokens(char *s, char **portp, char **hostp);
+bool inet_parse_active(const char *target, int default_port,
+ struct sockaddr_storage *ssp, bool resolve_host);
+int inet_open_active(int style, const char *target, int default_port,
+ struct sockaddr_storage *ssp, int *fdp, uint8_t dscp);
+
+bool inet_parse_passive(const char *target, int default_port,
+ struct sockaddr_storage *ssp);
+int inet_open_passive(int style, const char *target, int default_port,
+ struct sockaddr_storage *ssp, uint8_t dscp,
+ bool kernel_print_port);
+
+bool inet_parse_address(const char *target, struct sockaddr_storage *);
int read_fully(int fd, void *, size_t, size_t *bytes_read);
int write_fully(int fd, const void *, size_t, size_t *bytes_written);
+int fsync_parent_dir(const char *file_name);
+int get_mtime(const char *file_name, struct timespec *mtime);
+
+char *describe_fd(int fd);
+
+/* Default value of dscp bits for connection between controller and manager.
+ * Value of IPTOS_PREC_INTERNETCONTROL = 0xc0 which is defined
+ * in <netinet/ip.h> is used. */
+#define DSCP_DEFAULT (IPTOS_PREC_INTERNETCONTROL >> 2)
+
+/* Functions for working with sockaddr that might contain an IPv4 or
+ * IPv6 address. */
+bool sa_is_ip(const struct sockaddr *);
+uint16_t sa_get_port(const struct sockaddr *);
+struct in6_addr sa_get_address(const struct sockaddr *);
+void sa_format_address(const struct sockaddr *, struct ds *);
+void sa_format_address_nobracks(const struct sockaddr *, struct ds *);
+size_t sa_length(const struct sockaddr *);
+
+/* Functions for working with sockaddr_storage that might contain an IPv4 or
+ * IPv6 address. */
+bool ss_is_ip(const struct sockaddr_storage *);
+uint16_t ss_get_port(const struct sockaddr_storage *);
+struct in6_addr ss_get_address(const struct sockaddr_storage *);
+void ss_format_address(const struct sockaddr_storage *, struct ds *);
+void ss_format_address_nobracks(const struct sockaddr_storage *, struct ds *);
+size_t ss_length(const struct sockaddr_storage *);
+
+const char *sock_strerror(int error);
+
+#ifndef _WIN32
+void xpipe(int fds[2]);
+void xpipe_nonblocking(int fds[2]);
+
+int drain_rcvbuf(int fd);
+
+int make_unix_socket(int style, bool nonblock,
+ const char *bind_path, const char *connect_path);
+int get_unix_name_len(const struct sockaddr_un *sun, socklen_t sun_len);
+
+/* Universal sendmmsg and recvmmsg support on Linux.
+ *
+ * New enough Linux supports sendmmsg and recvmmsg, but older versions do not.
+ * We add the following infrastructure to allow all code on Linux to use
+ * sendmmsg and recvmmsg, regardless of platform support:
+ *
+ * - For platforms that lack these functions entirely, we emulate them.
+ *
+ * - With newer glibc but an old kernel, sendmmsg() and recvmmsg() fail with
+ * ENOSYS. To compensate, even if these functions appear to be available, we
+ * wrap them with handlers that use our emulation in this case.
+ */
+#ifdef __linux__
+#ifndef HAVE_STRUCT_MMSGHDR_MSG_LEN
+struct mmsghdr {
+ struct msghdr msg_hdr;
+ unsigned int msg_len;
+};
+#endif
+
+#ifndef HAVE_SENDMMSG
+int sendmmsg(int, struct mmsghdr *, unsigned int, unsigned int);
+int recvmmsg(int, struct mmsghdr *, unsigned int, int, struct timespec *);
+#else
+#define sendmmsg wrap_sendmmsg
+int wrap_sendmmsg(int, struct mmsghdr *, unsigned int, unsigned int);
+#define recvmmsg wrap_recvmmsg
+int wrap_recvmmsg(int, struct mmsghdr *, unsigned int, int, struct timespec *);
+#endif
+#endif /* __linux__ */
+
+/* Helpers for calling ioctl() on an AF_INET socket. */
+struct ifreq;
+int af_inet_ioctl(unsigned long int command, const void *arg);
+int af_inet_ifreq_ioctl(const char *name, struct ifreq *,
+ unsigned long int cmd, const char *cmd_name);
+
+#define closesocket close
+#endif
+
+#ifdef _WIN32
+static inline int make_unix_socket(int style, bool nonblock,
+ const char *bind_path,
+ const char *connect_path)
+{
+ return -EINVAL;
+}
+
+/* Windows defines the 'optval' argument as char * instead of void *. */
+#define setsockopt(sock, level, optname, optval, optlen) \
+ rpl_setsockopt(sock, level, optname, optval, optlen)
+static inline int rpl_setsockopt(int sock, int level, int optname,
+ const void *optval, socklen_t optlen)
+{
+ return (setsockopt)(sock, level, optname, (const char *)optval, optlen);
+}
+
+#define getsockopt(sock, level, optname, optval, optlen) \
+ rpl_getsockopt(sock, level, optname, optval, optlen)
+static inline int rpl_getsockopt(int sock, int level, int optname,
+ void *optval, socklen_t *optlen)
+{
+ return (getsockopt)(sock, level, optname, (char *)optval, optlen);
+}
+#endif
+
+/* In Windows platform, errno is not set for socket calls.
+ * The last error has to be gotten from WSAGetLastError(). */
+static inline int sock_errno(void)
+{
+#ifdef _WIN32
+ return WSAGetLastError();
+#else
+ return errno;
+#endif
+}
+
#endif /* socket-util.h */
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