/*
* Copyright (c) 2003-2008 Fabrice Bellard
* Copyright (c) 2010-2019 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef UTIL_H_
#define UTIL_H_
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <inttypes.h>
#ifdef _WIN32
#include <winsock2.h>
#include <windows.h>
#else
#include <sys/socket.h>
#include <netinet/tcp.h>
#include <netinet/in.h>
#endif
#if defined(_WIN32)
# define SLIRP_PACKED __attribute__((gcc_struct, packed))
#else
# define SLIRP_PACKED __attribute__((packed))
#endif
#ifndef DIV_ROUND_UP
#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
#endif
#ifndef container_of
#define container_of(ptr, type, member) __extension__ ({ \
void *__mptr = (void *)(ptr); \
((type *)(__mptr - offsetof(type, member))); })
#endif
#if defined(_WIN32) /* CONFIG_IOVEC */
# if !defined(IOV_MAX) /* XXX: to avoid duplicate with QEMU osdep.h */
struct iovec {
void *iov_base;
size_t iov_len;
};
# endif
#else
#include <sys/uio.h>
#endif
#define SCALE_MS 1000000
#define ETH_ALEN 6
#define ETH_HLEN 14
#define ETH_P_IP (0x0800) /* Internet Protocol packet */
#define ETH_P_ARP (0x0806) /* Address Resolution packet */
#define ETH_P_IPV6 (0x86dd)
#define ETH_P_VLAN (0x8100)
#define ETH_P_DVLAN (0x88a8)
#define ETH_P_NCSI (0x88f8)
#define ETH_P_UNKNOWN (0xffff)
#ifdef _WIN32
int slirp_closesocket(int fd);
int slirp_ioctlsocket(int fd, int req, void *val);
int inet_aton(const char *cp, struct in_addr *ia);
#define slirp_getsockopt(sockfd, level, optname, optval, optlen) \
getsockopt(sockfd, level, optname, (void *)optval, optlen)
#define slirp_setsockopt(sockfd, level, optname, optval, optlen) \
setsockopt(sockfd, level, optname, (const void *)optval, optlen)
#define slirp_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
#else
#define slirp_setsockopt setsockopt
#define slirp_getsockopt getsockopt
#define slirp_recv recv
#define slirp_closesocket close
#define slirp_ioctlsocket ioctl
#endif
int slirp_socket(int domain, int type, int protocol);
void slirp_set_nonblock(int fd);
static inline int slirp_socket_set_nodelay(int fd)
{
int v = 1;
return slirp_setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &v, sizeof(v));
}
static inline int slirp_socket_set_fast_reuse(int fd)
{
#ifndef _WIN32
int v = 1;
return slirp_setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v));
#else
/* Enabling the reuse of an endpoint that was used by a socket still in
* TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows
* fast reuse is the default and SO_REUSEADDR does strange things. So we
* don't have to do anything here. More info can be found at:
* http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */
return 0;
#endif
}
void slirp_pstrcpy(char *buf, int buf_size, const char *str);
#endif
