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git.proxmox.com Git - mirror_qemu.git/blob - slirp/src/socket.h
1 /* SPDX-License-Identifier: BSD-3-Clause */
3 * Copyright (c) 1995 Danny Gasparovski.
11 #define SO_EXPIRE 240000
12 #define SO_EXPIREFAST 10000
15 * Our socket structure
18 union slirp_sockaddr
{
19 struct sockaddr_storage ss
;
20 struct sockaddr_in sin
;
21 struct sockaddr_in6 sin6
;
25 struct socket
*so_next
,*so_prev
; /* For a linked list of sockets */
27 int s
; /* The actual socket */
28 struct gfwd_list
*guestfwd
;
30 int pollfds_idx
; /* GPollFD GArray index */
32 Slirp
*slirp
; /* managing slirp instance */
34 /* XXX union these with not-yet-used sbuf params */
35 struct mbuf
*so_m
; /* Pointer to the original SYN packet,
36 * for non-blocking connect()'s, and
38 struct tcpiphdr
*so_ti
; /* Pointer to the original ti within
39 * so_mconn, for non-blocking connections */
41 union slirp_sockaddr fhost
; /* Foreign host */
42 #define so_faddr fhost.sin.sin_addr
43 #define so_fport fhost.sin.sin_port
44 #define so_faddr6 fhost.sin6.sin6_addr
45 #define so_fport6 fhost.sin6.sin6_port
46 #define so_ffamily fhost.ss.ss_family
48 union slirp_sockaddr lhost
; /* Local host */
49 #define so_laddr lhost.sin.sin_addr
50 #define so_lport lhost.sin.sin_port
51 #define so_laddr6 lhost.sin6.sin6_addr
52 #define so_lport6 lhost.sin6.sin6_port
53 #define so_lfamily lhost.ss.ss_family
55 uint8_t so_iptos
; /* Type of service */
56 uint8_t so_emu
; /* Is the socket emulated? */
58 uint8_t so_type
; /* Type of socket, UDP or TCP */
59 int32_t so_state
; /* internal state flags SS_*, below */
61 struct tcpcb
*so_tcpcb
; /* pointer to TCP protocol control block */
62 unsigned so_expire
; /* When the socket will expire */
64 int so_queued
; /* Number of packets queued from this socket */
65 int so_nqueued
; /* Number of packets queued in a row
66 * Used to determine when to "downgrade" a session
67 * from fastq to batchq */
69 struct sbuf so_rcv
; /* Receive buffer */
70 struct sbuf so_snd
; /* Send buffer */
75 * Socket state bits. (peer means the host on the Internet,
76 * local host means the host on the other end of the modem)
78 #define SS_NOFDREF 0x001 /* No fd reference */
80 #define SS_ISFCONNECTING 0x002 /* Socket is connecting to peer (non-blocking connect()'s) */
81 #define SS_ISFCONNECTED 0x004 /* Socket is connected to peer */
82 #define SS_FCANTRCVMORE 0x008 /* Socket can't receive more from peer (for half-closes) */
83 #define SS_FCANTSENDMORE 0x010 /* Socket can't send more to peer (for half-closes) */
84 #define SS_FWDRAIN 0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */
87 #define SS_FACCEPTCONN 0x100 /* Socket is accepting connections from a host on the internet */
88 #define SS_FACCEPTONCE 0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */
90 #define SS_PERSISTENT_MASK 0xf000 /* Unremovable state bits */
91 #define SS_HOSTFWD 0x1000 /* Socket describes host->guest forwarding */
92 #define SS_INCOMING 0x2000 /* Connection was initiated by a host on the internet */
94 static inline int sockaddr_equal(struct sockaddr_storage
*a
,
95 struct sockaddr_storage
*b
)
97 if (a
->ss_family
!= b
->ss_family
) {
101 switch (a
->ss_family
) {
104 struct sockaddr_in
*a4
= (struct sockaddr_in
*) a
;
105 struct sockaddr_in
*b4
= (struct sockaddr_in
*) b
;
106 return a4
->sin_addr
.s_addr
== b4
->sin_addr
.s_addr
107 && a4
->sin_port
== b4
->sin_port
;
111 struct sockaddr_in6
*a6
= (struct sockaddr_in6
*) a
;
112 struct sockaddr_in6
*b6
= (struct sockaddr_in6
*) b
;
113 return (in6_equal(&a6
->sin6_addr
, &b6
->sin6_addr
)
114 && a6
->sin6_port
== b6
->sin6_port
);
117 g_assert_not_reached();
123 static inline socklen_t
sockaddr_size(struct sockaddr_storage
*a
)
125 switch (a
->ss_family
) {
127 return sizeof(struct sockaddr_in
);
129 return sizeof(struct sockaddr_in6
);
131 g_assert_not_reached();
135 struct socket
*solookup(struct socket
**, struct socket
*,
136 struct sockaddr_storage
*, struct sockaddr_storage
*);
137 struct socket
*socreate(Slirp
*);
138 void sofree(struct socket
*);
139 int soread(struct socket
*);
140 int sorecvoob(struct socket
*);
141 int sosendoob(struct socket
*);
142 int sowrite(struct socket
*);
143 void sorecvfrom(struct socket
*);
144 int sosendto(struct socket
*, struct mbuf
*);
145 struct socket
* tcp_listen(Slirp
*, uint32_t, unsigned, uint32_t, unsigned,
147 void soisfconnecting(register struct socket
*);
148 void soisfconnected(register struct socket
*);
149 void sofwdrain(struct socket
*);
150 struct iovec
; /* For win32 */
151 size_t sopreprbuf(struct socket
*so
, struct iovec
*iov
, int *np
);
152 int soreadbuf(struct socket
*so
, const char *buf
, int size
);
154 void sotranslate_out(struct socket
*, struct sockaddr_storage
*);
155 void sotranslate_in(struct socket
*, struct sockaddr_storage
*);
156 void sotranslate_accept(struct socket
*);
157 void sodrop(struct socket
*, int num
);
160 #endif /* SLIRP_SOCKET_H */