SLiRP overhaul
This commit is contained in:
RichardG867
@@ -1,14 +1,12 @@
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/* SPDX-License-Identifier: BSD-3-Clause */
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/*
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* Copyright (c) 1995 Danny Gasparovski.
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*
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* Please read the file COPYRIGHT for the
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* terms and conditions of the copyright.
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*/
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/* MINE */
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#ifndef SLIRP_SOCKET_H
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#define SLIRP_SOCKET_H
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#ifndef _SLIRP_SOCKET_H_
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#define _SLIRP_SOCKET_H_
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#include "misc.h"
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#define SO_EXPIRE 240000
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#define SO_EXPIREFAST 10000
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@@ -17,40 +15,59 @@
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* Our socket structure
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*/
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struct SLIRPsocket {
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struct SLIRPsocket *so_next,*so_prev; /* For a linked list of sockets */
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union slirp_sockaddr {
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struct sockaddr_storage ss;
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struct sockaddr_in sin;
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struct sockaddr_in6 sin6;
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};
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int s; /* The actual socket */
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struct socket {
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struct socket *so_next, *so_prev; /* For a linked list of sockets */
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/* XXX union these with not-yet-used sbuf params */
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struct SLIRPmbuf *so_m; /* Pointer to the original SYN packet,
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* for non-blocking connect()'s, and
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* PING reply's */
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struct tcpiphdr *so_ti; /* Pointer to the original ti within
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* so_mconn, for non-blocking connections */
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int so_urgc;
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struct in_addr so_faddr; /* foreign host table entry */
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struct in_addr so_laddr; /* local host table entry */
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u_int16_t so_fport; /* foreign port */
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u_int16_t so_lport; /* local port */
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u_int8_t so_iptos; /* Type of service */
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u_int8_t so_emu; /* Is the socket emulated? */
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u_char so_type; /* Type of socket, UDP or TCP */
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int so_state; /* internal state flags SS_*, below */
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struct tcpcb *so_tcpcb; /* pointer to TCP protocol control block */
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u_int so_expire; /* When the socket will expire */
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int so_queued; /* Number of packets queued from this socket */
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int so_nqueued; /* Number of packets queued in a row
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* Used to determine when to "downgrade" a session
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* from fastq to batchq */
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struct sbuf so_rcv; /* Receive buffer */
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struct sbuf so_snd; /* Send buffer */
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void * extra; /* Extra pointer */
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int s; /* The actual socket */
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struct gfwd_list *guestfwd;
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int pollfds_idx; /* GPollFD GArray index */
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Slirp *slirp; /* managing slirp instance */
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/* XXX union these with not-yet-used sbuf params */
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struct mbuf *so_m; /* Pointer to the original SYN packet,
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* for non-blocking connect()'s, and
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* PING reply's */
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struct tcpiphdr *so_ti; /* Pointer to the original ti within
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* so_mconn, for non-blocking connections */
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uint32_t so_urgc;
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union slirp_sockaddr fhost; /* Foreign host */
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#define so_faddr fhost.sin.sin_addr
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#define so_fport fhost.sin.sin_port
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#define so_faddr6 fhost.sin6.sin6_addr
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#define so_fport6 fhost.sin6.sin6_port
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#define so_ffamily fhost.ss.ss_family
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union slirp_sockaddr lhost; /* Local host */
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#define so_laddr lhost.sin.sin_addr
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#define so_lport lhost.sin.sin_port
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#define so_laddr6 lhost.sin6.sin6_addr
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#define so_lport6 lhost.sin6.sin6_port
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#define so_lfamily lhost.ss.ss_family
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uint8_t so_iptos; /* Type of service */
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uint8_t so_emu; /* Is the socket emulated? */
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uint8_t so_type; /* Type of socket, UDP or TCP */
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int32_t so_state; /* internal state flags SS_*, below */
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struct tcpcb *so_tcpcb; /* pointer to TCP protocol control block */
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unsigned so_expire; /* When the socket will expire */
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int so_queued; /* Number of packets queued from this socket */
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int so_nqueued; /* Number of packets queued in a row
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* Used to determine when to "downgrade" a session
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* from fastq to batchq */
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struct sbuf so_rcv; /* Receive buffer */
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struct sbuf so_snd; /* Send buffer */
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};
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@@ -58,47 +75,90 @@ struct SLIRPsocket {
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* Socket state bits. (peer means the host on the Internet,
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* local host means the host on the other end of the modem)
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*/
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#define SS_NOFDREF 0x001 /* No fd reference */
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#define SS_NOFDREF 0x001 /* No fd reference */
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#define SS_ISFCONNECTING 0x002 /* Socket is connecting to peer (non-blocking connect()'s) */
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#define SS_ISFCONNECTED 0x004 /* Socket is connected to peer */
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#define SS_FCANTRCVMORE 0x008 /* Socket can't receive more from peer (for half-closes) */
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#define SS_FCANTSENDMORE 0x010 /* Socket can't send more to peer (for half-closes) */
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/* #define SS_ISFDISCONNECTED 0x020*/ /* Socket has disconnected from peer, in 2MSL state */
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#define SS_FWDRAIN 0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */
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#define SS_ISFCONNECTING \
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0x002 /* Socket is connecting to peer (non-blocking connect()'s) */
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#define SS_ISFCONNECTED 0x004 /* Socket is connected to peer */
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#define SS_FCANTRCVMORE \
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0x008 /* Socket can't receive more from peer (for half-closes) */
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#define SS_FCANTSENDMORE \
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0x010 /* Socket can't send more to peer (for half-closes) */
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#define SS_FWDRAIN \
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0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */
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#define SS_CTL 0x080
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#define SS_FACCEPTCONN 0x100 /* Socket is accepting connections from a host on the internet */
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#define SS_FACCEPTONCE 0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */
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#define SS_CTL 0x080
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#define SS_FACCEPTCONN \
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0x100 /* Socket is accepting connections from a host on the internet */
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#define SS_FACCEPTONCE \
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0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */
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extern struct SLIRPsocket tcb;
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#define SS_PERSISTENT_MASK 0xf000 /* Unremovable state bits */
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#define SS_HOSTFWD 0x1000 /* Socket describes host->guest forwarding */
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#define SS_INCOMING \
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0x2000 /* Connection was initiated by a host on the internet */
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static inline int sockaddr_equal(struct sockaddr_storage *a,
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struct sockaddr_storage *b)
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{
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if (a->ss_family != b->ss_family) {
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return 0;
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}
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switch (a->ss_family) {
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case AF_INET: {
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struct sockaddr_in *a4 = (struct sockaddr_in *)a;
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struct sockaddr_in *b4 = (struct sockaddr_in *)b;
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return a4->sin_addr.s_addr == b4->sin_addr.s_addr &&
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a4->sin_port == b4->sin_port;
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}
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case AF_INET6: {
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struct sockaddr_in6 *a6 = (struct sockaddr_in6 *)a;
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struct sockaddr_in6 *b6 = (struct sockaddr_in6 *)b;
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return (in6_equal(&a6->sin6_addr, &b6->sin6_addr) &&
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a6->sin6_port == b6->sin6_port);
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}
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default:
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g_assert_not_reached();
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}
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return 0;
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}
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static inline socklen_t sockaddr_size(struct sockaddr_storage *a)
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{
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switch (a->ss_family) {
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case AF_INET:
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return sizeof(struct sockaddr_in);
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case AF_INET6:
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return sizeof(struct sockaddr_in6);
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default:
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g_assert_not_reached();
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}
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}
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struct socket *solookup(struct socket **, struct socket *,
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struct sockaddr_storage *, struct sockaddr_storage *);
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struct socket *socreate(Slirp *);
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void sofree(struct socket *);
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int soread(struct socket *);
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int sorecvoob(struct socket *);
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int sosendoob(struct socket *);
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int sowrite(struct socket *);
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void sorecvfrom(struct socket *);
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int sosendto(struct socket *, struct mbuf *);
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struct socket *tcp_listen(Slirp *, uint32_t, unsigned, uint32_t, unsigned, int);
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void soisfconnecting(register struct socket *);
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void soisfconnected(register struct socket *);
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void sofwdrain(struct socket *);
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struct iovec; /* For win32 */
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size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
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int soreadbuf(struct socket *so, const char *buf, int size);
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int sotranslate_out(struct socket *, struct sockaddr_storage *);
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void sotranslate_in(struct socket *, struct sockaddr_storage *);
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void sotranslate_accept(struct socket *);
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void sodrop(struct socket *, int num);
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#if defined(DECLARE_IOVEC) && !defined(HAVE_READV)
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struct iovec {
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char *iov_base;
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size_t iov_len;
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};
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#endif
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void so_init _P((void));
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struct SLIRPsocket * solookup _P((struct SLIRPsocket *, struct in_addr, u_int, struct in_addr, u_int));
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struct SLIRPsocket * socreate _P((void));
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void sofree _P((struct SLIRPsocket *));
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int soread _P((struct SLIRPsocket *));
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void sorecvoob _P((struct SLIRPsocket *));
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int sosendoob _P((struct SLIRPsocket *));
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int sowrite _P((struct SLIRPsocket *));
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void sorecvfrom _P((struct SLIRPsocket *));
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int sosendto _P((struct SLIRPsocket *, struct SLIRPmbuf *));
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struct SLIRPsocket * solisten _P((u_int, u_int32_t, u_int, int));
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void sorwakeup _P((struct SLIRPsocket *));
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void sowwakeup _P((struct SLIRPsocket *));
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void soisfconnecting _P((register struct SLIRPsocket *));
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void soisfconnected _P((register struct SLIRPsocket *));
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void sofcantrcvmore _P((struct SLIRPsocket *));
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void sofcantsendmore _P((struct SLIRPsocket *));
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void soisfdisconnected _P((struct SLIRPsocket *));
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void sofwdrain _P((struct SLIRPsocket *));
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#endif /* _SOCKET_H_ */
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#endif /* SLIRP_SOCKET_H */
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