slirp: Drop dead code

After all its years inside the qemu tree, there is no point in keeping the dead code paths of slirp. This patch is a first round of removing usually commented out code parts. More cleanups need to follow (and maybe finally a proper reindention). Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

slirp: Drop dead code
After all its years inside the qemu tree, there is no point in keeping the dead code paths of slirp. This patch is a first round of removing usually commented out code parts. More cleanups need to follow (and maybe finally a proper reindention). Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jan Kiszka · Anthony Liguori
1 parent 6dbe553f
Showing 26 changed files with 22 additions and 1650 deletions
slirp/debug.c
slirp/debug.h
slirp/if.c
slirp/if.h
slirp/ip_icmp.c
slirp/ip_input.c
slirp/ip_output.c
slirp/libslirp.h
slirp/mbuf.c
slirp/mbuf.h
slirp/misc.c
slirp/misc.h
slirp/sbuf.c
slirp/slirp.c
slirp/slirp.h
slirp/socket.c
slirp/socket.h
slirp/tcp.h
slirp/tcp_input.c
slirp/tcp_output.c
@@ -9,127 +9,9 @@
 #include <slirp.h>
 FILE *dfd = NULL;
-#ifdef DEBUG
-int dostats = 1;
-#else
-int dostats = 0;
-#endif
 int slirp_debug = 0;
-/* Carry over one item from main.c so that the tty's restored.
- * Only done when the tty being used is /dev/tty --RedWolf */
-#ifndef CONFIG_QEMU
-extern struct termios slirp_tty_settings;
-extern int slirp_tty_restore;
-
-
-void
-debug_init(file, dbg)
-	char *file;
-	int dbg;
-{
-	/* Close the old debugging file */
-	if (dfd)
-	   fclose(dfd);
-
-	dfd = fopen(file,"w");
-	if (dfd != NULL) {
-#if 0
-		fprintf(dfd,"Slirp %s - Debugging Started.\n", SLIRP_VERSION);
-#endif
-		fprintf(dfd,"Debugging Started level %i.\r\n",dbg);
-		fflush(dfd);
-		slirp_debug = dbg;
-	} else {
-		lprint("Error: Debugging file \"%s\" could not be opened: %s\r\n",
-			file, strerror(errno));
-	}
-}
-
-/*
- * Dump a packet in the same format as tcpdump -x
- */
-#ifdef DEBUG
-void
-dump_packet(dat, n)
-	void *dat;
-	int n;
-{
-	u_char *pptr = (u_char *)dat;
-	int j,k;
-
-	n /= 16;
-	n++;
-	DEBUG_MISC((dfd, "PACKET DUMPED: \n"));
-	for(j = 0; j < n; j++) {
-		for(k = 0; k < 6; k++)
-			DEBUG_MISC((dfd, "%02x ", *pptr++));
-		DEBUG_MISC((dfd, "\n"));
-		fflush(dfd);
-	}
-}
-#endif
-#endif
-
 #ifdef LOG_ENABLED
-#if 0
-/*
- * Statistic routines
- *
- * These will print statistics to the screen, the debug file (dfd), or
- * a buffer, depending on "type", so that the stats can be sent over
- * the link as well.
- */
-
-static void
-ttystats(ttyp)
-	struct ttys *ttyp;
-{
-	struct slirp_ifstats *is = &ttyp->ifstats;
-	char buff[512];
-
-	lprint(" \r\n");
-
-	if (IF_COMP & IF_COMPRESS)
-	   strcpy(buff, "on");
-	else if (IF_COMP & IF_NOCOMPRESS)
-	   strcpy(buff, "off");
-	else
-	   strcpy(buff, "off (for now)");
-	lprint("Unit %d:\r\n", ttyp->unit);
-	lprint("  using %s encapsulation (VJ compression is %s)\r\n", (
-#ifdef USE_PPP
-	       ttyp->proto==PROTO_PPP?"PPP":
-#endif
-	       "SLIP"), buff);
-	lprint("  %d baudrate\r\n", ttyp->baud);
-	lprint("  interface is %s\r\n", ttyp->up?"up":"down");
-	lprint("  using fd %d, guardian pid is %d\r\n", ttyp->fd, ttyp->pid);
-#ifndef FULL_BOLT
-	lprint("  towrite is %d bytes\r\n", ttyp->towrite);
-#endif
-	if (ttyp->zeros)
-	   lprint("  %d zeros have been typed\r\n", ttyp->zeros);
-	else if (ttyp->ones)
-	   lprint("  %d ones have been typed\r\n", ttyp->ones);
-	lprint("Interface stats:\r\n");
-	lprint("  %6d output packets sent (%d bytes)\r\n", is->out_pkts, is->out_bytes);
-	lprint("  %6d output packets dropped (%d bytes)\r\n", is->out_errpkts, is->out_errbytes);
-	lprint("  %6d input packets received (%d bytes)\r\n", is->in_pkts, is->in_bytes);
-	lprint("  %6d input packets dropped (%d bytes)\r\n", is->in_errpkts, is->in_errbytes);
-	lprint("  %6d bad input packets\r\n", is->in_mbad);
-}
-
-static void
-allttystats(void)
-{
-	struct ttys *ttyp;
-
-	for (ttyp = ttys; ttyp; ttyp = ttyp->next)
-	   ttystats(ttyp);
-}
-#endif
-
 static void
 ipstats(void)
 {
@@ -154,25 +36,6 @@ ipstats(void)
 	lprint("  %6d total packets delivered\r\n", ipstat.ips_delivered);
 }
-#ifndef CONFIG_QEMU
-static void
-vjstats(void)
-{
-	lprint(" \r\n");
-
-	lprint("VJ compression stats:\r\n");
-
-	lprint("  %6d outbound packets (%d compressed)\r\n",
-	       comp_s.sls_packets, comp_s.sls_compressed);
-	lprint("  %6d searches for connection stats (%d misses)\r\n",
-	       comp_s.sls_searches, comp_s.sls_misses);
-	lprint("  %6d inbound uncompressed packets\r\n", comp_s.sls_uncompressedin);
-	lprint("  %6d inbound compressed packets\r\n", comp_s.sls_compressedin);
-	lprint("  %6d inbound unknown type packets\r\n", comp_s.sls_errorin);
-	lprint("  %6d inbound packets tossed due to error\r\n", comp_s.sls_tossed);
-}
-#endif
-
 static void
 tcpstats(void)
 {
@@ -234,11 +97,6 @@ tcpstats(void)
 	lprint("  %6d correct ACK header predictions\r\n", tcpstat.tcps_predack);
 	lprint("  %6d correct data packet header predictions\n", tcpstat.tcps_preddat);
 	lprint("  %6d TCP cache misses\r\n", tcpstat.tcps_socachemiss);
-
-
-/*	lprint("    Packets received too short:		%d\r\n", tcpstat.tcps_rcvshort); */
-/*	lprint("    Segments dropped due to PAWS:	%d\r\n", tcpstat.tcps_pawsdrop); */
-
 }
 static void
@@ -293,49 +151,6 @@ mbufstats(void)
 }
 #endif
-#ifndef CONFIG_QEMU
-void
-slirp_exit(exit_status)
-	int exit_status;
-{
-	struct ttys *ttyp;
-
-	DEBUG_CALL("slirp_exit");
-	DEBUG_ARG("exit_status = %d", exit_status);
-
-	if (dostats) {
-		lprint_print = (int (*) _P((void *, const char *, va_list)))vfprintf;
-		if (!dfd)
-		   debug_init("slirp_stats", 0xf);
-		lprint_arg = (char **)&dfd;
-
-		ipstats();
-		tcpstats();
-		udpstats();
-		icmpstats();
-		mbufstats();
-		sockstats();
-		allttystats();
-		vjstats();
-	}
-
-	for (ttyp = ttys; ttyp; ttyp = ttyp->next)
-	   tty_detached(ttyp, 1);
-
-	if (slirp_forked) {
-		/* Menendez time */
-		if (kill(getppid(), SIGQUIT) < 0)
-			lprint("Couldn't kill parent process %ld!\n",
-			    (long) getppid());
-    	}
-
-	/* Restore the terminal if we gotta */
-	if(slirp_tty_restore)
-	  tcsetattr(0,TCSANOW, &slirp_tty_settings);  /* NOW DAMMIT! */
-	exit(exit_status);
-}
-#endif
-
 void
 slirp_stats(void)
 {
@@ -9,8 +9,6 @@
 #define PRN_SPRINTF	2
 extern FILE *dfd;
-extern FILE *lfd;
-extern int dostats;
 extern int slirp_debug;
 #define DBG_CALL 0x1
@@ -36,89 +36,9 @@ if_init(void)
 {
 	if_fastq.ifq_next = if_fastq.ifq_prev = &if_fastq;
 	if_batchq.ifq_next = if_batchq.ifq_prev = &if_batchq;
-        //	sl_compress_init(&comp_s);
 	next_m = &if_batchq;
 }
-#if 0
-/*
- * This shouldn't be needed since the modem is blocking and
- * we don't expect any signals, but what the hell..
- */
-inline int
-writen(fd, bptr, n)
-	int fd;
-	char *bptr;
-	int n;
-{
-	int ret;
-	int total;
-
-	/* This should succeed most of the time */
-	ret = send(fd, bptr, n,0);
-	if (ret == n || ret <= 0)
-	   return ret;
-
-	/* Didn't write everything, go into the loop */
-	total = ret;
-	while (n > total) {
-		ret = send(fd, bptr+total, n-total,0);
-		if (ret <= 0)
-		   return ret;
-		total += ret;
-	}
-	return total;
-}
-
-/*
- * if_input - read() the tty, do "top level" processing (ie: check for any escapes),
- * and pass onto (*ttyp->if_input)
- *
- * XXXXX Any zeros arriving by themselves are NOT placed into the arriving packet.
- */
-#define INBUFF_SIZE 2048 /* XXX */
-void
-if_input(ttyp)
-	struct ttys *ttyp;
-{
-	u_char if_inbuff[INBUFF_SIZE];
-	int if_n;
-
-	DEBUG_CALL("if_input");
-	DEBUG_ARG("ttyp = %lx", (long)ttyp);
-
-	if_n = recv(ttyp->fd, (char *)if_inbuff, INBUFF_SIZE,0);
-
-	DEBUG_MISC((dfd, " read %d bytes\n", if_n));
-
-	if (if_n <= 0) {
-		if (if_n == 0 || (errno != EINTR && errno != EAGAIN)) {
-			if (ttyp->up)
-			   link_up--;
-			tty_detached(ttyp, 0);
-		}
-		return;
-	}
-	if (if_n == 1) {
-		if (*if_inbuff == '0') {
-			ttyp->ones = 0;
-			if (++ttyp->zeros >= 5)
-			   slirp_exit(0);
-			return;
-		}
-		if (*if_inbuff == '1') {
-			ttyp->zeros = 0;
-			if (++ttyp->ones >= 5)
-			   tty_detached(ttyp, 0);
-			return;
-		}
-	}
-	ttyp->ones = ttyp->zeros = 0;
-
-	(*ttyp->if_input)(ttyp, if_inbuff, if_n);
-}
-#endif
-
 /*
  * if_output: Queue packet into an output queue.
  * There are 2 output queue's, if_fastq and if_batchq.
@@ -17,20 +17,8 @@
 #define IF_MRU 1500
 #define	IF_COMP IF_AUTOCOMP	/* Flags for compression */
-#if 0
-/*
- * Set if_maxlinkhdr to 48 because it's 40 bytes for TCP/IP,
- * and 8 bytes for PPP, but need to have it on an 8byte boundary
- */
-#ifdef USE_PPP
-#define IF_MAXLINKHDR 48
-#else
-#define IF_MAXLINKHDR 40
-#endif
-#else
-        /* 2 for alignment, 14 for ethernet, 40 for TCP/IP */
+/* 2 for alignment, 14 for ethernet, 40 for TCP/IP */
 #define IF_MAXLINKHDR (2 + 14 + 40)
-#endif
 extern int	if_queued;	/* Number of packets queued so far */
@@ -73,7 +73,6 @@ icmp_input(struct mbuf *m, int hlen)
   register struct icmp *icp;
   register struct ip *ip=mtod(m, struct ip *);
   int icmplen=ip->ip_len;
-  /* int code; */
   DEBUG_CALL("icmp_input");
   DEBUG_ARG("m = %lx", (long )m);
@@ -102,9 +101,6 @@ icmp_input(struct mbuf *m, int hlen)
   m->m_len += hlen;
   m->m_data -= hlen;
-  /*	icmpstat.icps_inhist[icp->icmp_type]++; */
-  /* code = icp->icmp_code; */
-
   DEBUG_ARG("icmp_type = %d", icp->icmp_type);
   switch (icp->icmp_type) {
   case ICMP_ECHO:
@@ -165,16 +165,6 @@ ip_input(struct mbuf *m)
 	}
 	/*
-	 * Process options and, if not destined for us,
-	 * ship it on.  ip_dooptions returns 1 when an
-	 * error was detected (causing an icmp message
-	 * to be sent and the original packet to be freed).
-	 */
-/* We do no IP options */
-/*	if (hlen > sizeof (struct ip) && ip_dooptions(m))
- *		goto next;
- */
-	/*
 	 * If offset or IP_MF are set, must reassemble.
 	 * Otherwise, nothing need be done.
 	 * (We could look in the reassembly queue to see
@@ -396,9 +386,6 @@ insert:
 	  q = (struct ipasfrag *)(m->m_ext + delta);
 	}
-	/* DEBUG_ARG("ip = %lx", (long)ip);
-	 * ip=(struct ipasfrag *)m->m_data; */
-
     ip = fragtoip(q);
 	ip->ip_len = next;
 	ip->ip_tos &= ~1;
@@ -505,7 +492,6 @@ ip_dooptions(m)
 	register u_char *cp;
 	register struct ip_timestamp *ipt;
 	register struct in_ifaddr *ia;
-/*	int opt, optlen, cnt, off, code, type = ICMP_PARAMPROB, forward = 0; */
 	int opt, optlen, cnt, off, code, type, forward = 0;
 	struct in_addr *sin, dst;
 typedef u_int32_t n_time;
@@ -683,9 +669,6 @@ typedef u_int32_t n_time;
 	}
 	return (0);
 bad:
-	/* ip->ip_len -= ip->ip_hl << 2;   XXX icmp_error adds in hdr length */
-
-/* Not yet */
  	icmp_error(m, type, code, 0, 0);
 	STAT(ipstat.ips_badoptions++);
@@ -64,12 +64,6 @@ ip_output(struct socket *so, struct mbuf *m0)
 	DEBUG_ARG("so = %lx", (long)so);
 	DEBUG_ARG("m0 = %lx", (long)m0);
-	/* We do no options */
-/*	if (opt) {
- *		m = ip_insertoptions(m, opt, &len);
- *		hlen = len;
- *	}
- */
 	ip = mtod(m, struct ip *);
 	/*
 	 * Fill in IP header.
@@ -81,17 +75,6 @@ ip_output(struct socket *so, struct mbuf *m0)
 	STAT(ipstat.ips_localout++);
 	/*
-	 * Verify that we have any chance at all of being able to queue
-	 *      the packet or packet fragments
-	 */
-	/* XXX Hmmm... */
-/*	if (if_queued > IF_THRESH && towrite <= 0) {
- *		error = ENOBUFS;
- *		goto bad;
- *	}
- */
-
-	/*
 	 * If small enough for interface, can just send directly.
 	 */
 	if ((u_int16_t)ip->ip_len <= IF_MTU) {
@@ -142,12 +125,6 @@ ip_output(struct socket *so, struct mbuf *m0)
 	  mhip = mtod(m, struct ip *);
 	  *mhip = *ip;
-		/* No options */
-/*		if (hlen > sizeof (struct ip)) {
- *			mhlen = ip_optcopy(ip, mhip) + sizeof (struct ip);
- *			mhip->ip_hl = mhlen >> 2;
- *		}
- */
 	  m->m_len = mhlen;
 	  mhip->ip_off = ((off - hlen) >> 3) + (ip->ip_off & ~IP_MF);
 	  if (ip->ip_off & IP_MF)
 #ifndef _LIBSLIRP_H
 #define _LIBSLIRP_H
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #include <qemu-common.h>
 void slirp_init(int restricted, struct in_addr vnetwork,
@@ -37,8 +33,4 @@ void slirp_socket_recv(struct in_addr guest_addr, int guest_port,
                        const uint8_t *buf, int size);
 size_t slirp_socket_can_recv(struct in_addr guest_addr, int guest_port);
-#ifdef __cplusplus
-}
-#endif
-
 #endif
@@ -141,17 +141,11 @@ m_inc(struct mbuf *m, int size)
         if (m->m_flags & M_EXT) {
 	  datasize = m->m_data - m->m_ext;
 	  m->m_ext = (char *)realloc(m->m_ext,size);
-/*		if (m->m_ext == NULL)
- *			return (struct mbuf *)NULL;
- */
 	  m->m_data = m->m_ext + datasize;
         } else {
 	  char *dat;
 	  datasize = m->m_data - m->m_dat;
 	  dat = (char *)malloc(size);
-/*		if (dat == NULL)
- *			return (struct mbuf *)NULL;
- */
 	  memcpy(dat, m->m_dat, m->m_size);
 	  m->m_ext = dat;
@@ -41,10 +41,8 @@
 /*
  * Macros for type conversion
  * mtod(m,t) -	convert mbuf pointer to data pointer of correct type
- * dtom(x) -	convert data pointer within mbuf to mbuf pointer (XXX)
  */
 #define mtod(m,t)	((t)(m)->m_data)
-/* #define	dtom(x)		((struct mbuf *)((int)(x) & ~(M_SIZE-1))) */
 /* XXX About mbufs for slirp:
  * Only one mbuf is ever used in a chain, for each "cell" of data.
@@ -12,62 +12,6 @@
 u_int curtime, time_fasttimo, last_slowtimo;
-#if 0
-int x_port = -1;
-int x_display = 0;
-int x_screen = 0;
-
-int
-show_x(buff, inso)
-	char *buff;
-	struct socket *inso;
-{
-	if (x_port < 0) {
-		lprint("X Redir: X not being redirected.\r\n");
-	} else {
-		lprint("X Redir: In sh/bash/zsh/etc. type: DISPLAY=%s:%d.%d; export DISPLAY\r\n",
-		      inet_ntoa(our_addr), x_port, x_screen);
-		lprint("X Redir: In csh/tcsh/etc. type:    setenv DISPLAY %s:%d.%d\r\n",
-		      inet_ntoa(our_addr), x_port, x_screen);
-		if (x_display)
-		   lprint("X Redir: Redirecting to display %d\r\n", x_display);
-	}
-
-	return CFG_OK;
-}
-
-
-/*
- * XXX Allow more than one X redirection?
- */
-void
-redir_x(inaddr, start_port, display, screen)
-	u_int32_t inaddr;
-	int start_port;
-	int display;
-	int screen;
-{
-	int i;
-
-	if (x_port >= 0) {
-		lprint("X Redir: X already being redirected.\r\n");
-		show_x(0, 0);
-	} else {
-		for (i = 6001 + (start_port-1); i <= 6100; i++) {
-			if (solisten(htons(i), inaddr, htons(6000 + display), 0)) {
-				/* Success */
-				x_port = i - 6000;
-				x_display = display;
-				x_screen = screen;
-				show_x(0, 0);
-				return;
-			}
-		}
-		lprint("X Redir: Error: Couldn't redirect a port for X. Weird.\r\n");
-	}
-}
-#endif
-
 /*
  * Get our IP address and put it in our_addr
  */
@@ -109,12 +53,8 @@ remque(void *a)
   ((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink;
   ((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link;
   element->qh_rlink = NULL;
-  /*  element->qh_link = NULL;  TCP FIN1 crashes if you do this.  Why ? */
 }
-/* #endif */
-
-
 int add_exec(struct ex_list **ex_ptr, int do_pty, char *exec,
              struct in_addr addr, int port)
 {
@@ -170,73 +110,6 @@ fork_exec(struct socket *so, const char *ex, int do_pty)
 #else
-#ifndef CONFIG_QEMU
-int
-slirp_openpty(amaster, aslave)
-     int *amaster, *aslave;
-{
-	register int master, slave;
-
-#ifdef HAVE_GRANTPT
-	char *ptr;
-
-	if ((master = open("/dev/ptmx", O_RDWR)) < 0 ||
-	    grantpt(master) < 0 ||
-	    unlockpt(master) < 0 ||
-	    (ptr = ptsname(master)) == NULL)  {
-		close(master);
-		return -1;
-	}
-
-	if ((slave = open(ptr, O_RDWR)) < 0 ||
-	    ioctl(slave, I_PUSH, "ptem") < 0 ||
-	    ioctl(slave, I_PUSH, "ldterm") < 0 ||
-	    ioctl(slave, I_PUSH, "ttcompat") < 0) {
-		close(master);
-		close(slave);
-		return -1;
-	}
-
-	*amaster = master;
-	*aslave = slave;
-	return 0;
-
-#else
-
-	static char line[] = "/dev/ptyXX";
-	register const char *cp1, *cp2;
-
-	for (cp1 = "pqrsPQRS"; *cp1; cp1++) {
-		line[8] = *cp1;
-		for (cp2 = "0123456789abcdefghijklmnopqrstuv"; *cp2; cp2++) {
-			line[9] = *cp2;
-			if ((master = open(line, O_RDWR, 0)) == -1) {
-				if (errno == ENOENT)
-				   return (-1);    /* out of ptys */
-			} else {
-				line[5] = 't';
-				/* These will fail */
-				(void) chown(line, getuid(), 0);
-				(void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP);
-#ifdef HAVE_REVOKE
-				(void) revoke(line);
-#endif
-				if ((slave = open(line, O_RDWR, 0)) != -1) {
-					*amaster = master;
-					*aslave = slave;
-					return 0;
-				}
-				(void) close(master);
-				line[5] = 'p';
-			}
-		}
-	}
-	errno = ENOENT; /* out of ptys */
-	return (-1);
-#endif
-}
-#endif
-
 /*
  * XXX This is ugly
  * We create and bind a socket, then fork off to another
@@ -257,9 +130,6 @@ fork_exec(struct socket *so, const char *ex, int do_pty)
 	int opt;
         int master = -1;
 	const char *argv[256];
-#if 0
-	char buff[256];
-#endif
 	/* don't want to clobber the original */
 	char *bptr;
 	const char *curarg;
@@ -271,14 +141,7 @@ fork_exec(struct socket *so, const char *ex, int do_pty)
 	DEBUG_ARG("do_pty = %lx", (long)do_pty);
 	if (do_pty == 2) {
-#if 0
-		if (slirp_openpty(&master, &s) == -1) {
-			lprint("Error: openpty failed: %s\n", strerror(errno));
-			return 0;
-		}
-#else
                 return 0;
-#endif
 	} else {
 		addr.sin_family = AF_INET;
 		addr.sin_port = 0;
@@ -324,17 +187,6 @@ fork_exec(struct socket *so, const char *ex, int do_pty)
                         } while (ret < 0 && errno == EINTR);
 		}
-#if 0
-		if (x_port >= 0) {
-#ifdef HAVE_SETENV
-			sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
-			setenv("DISPLAY", buff, 1);
-#else
-			sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
-			putenv(buff);
-#endif
-		}
-#endif
 		dup2(s, 0);
 		dup2(s, 1);
 		dup2(s, 2);
@@ -422,137 +274,6 @@ strdup(str)
 }
 #endif
-#if 0
-void
-snooze_hup(num)
-	int num;
-{
-	int s, ret;
-#ifndef NO_UNIX_SOCKETS
-	struct sockaddr_un sock_un;
-#endif
-	struct sockaddr_in sock_in;
-	char buff[256];
-
-	ret = -1;
-	if (slirp_socket_passwd) {
-		s = socket(AF_INET, SOCK_STREAM, 0);
-		if (s < 0)
-		   slirp_exit(1);
-		sock_in.sin_family = AF_INET;
-		sock_in.sin_addr.s_addr = slirp_socket_addr;
-		sock_in.sin_port = htons(slirp_socket_port);
-		if (connect(s, (struct sockaddr *)&sock_in, sizeof(sock_in)) != 0)
-		   slirp_exit(1); /* just exit...*/
-		sprintf(buff, "kill %s:%d", slirp_socket_passwd, slirp_socket_unit);
-		write(s, buff, strlen(buff)+1);
-	}
-#ifndef NO_UNIX_SOCKETS
-	  else {
-		s = socket(AF_UNIX, SOCK_STREAM, 0);
-		if (s < 0)
-		   slirp_exit(1);
-		sock_un.sun_family = AF_UNIX;
-		strcpy(sock_un.sun_path, socket_path);
-		if (connect(s, (struct sockaddr *)&sock_un,
-			      sizeof(sock_un.sun_family) + sizeof(sock_un.sun_path)) != 0)
-		   slirp_exit(1);
-		sprintf(buff, "kill none:%d", slirp_socket_unit);
-		write(s, buff, strlen(buff)+1);
-	}
-#endif
-	slirp_exit(0);
-}
-
-
-void
-snooze()
-{
-	sigset_t s;
-	int i;
-
-	/* Don't need our data anymore */
-	/* XXX This makes SunOS barf */
-/*	brk(0); */
-
-	/* Close all fd's */
-	for (i = 255; i >= 0; i--)
-	   close(i);
-
-	signal(SIGQUIT, slirp_exit);
-	signal(SIGHUP, snooze_hup);
-	sigemptyset(&s);
-
-	/* Wait for any signal */
-	sigsuspend(&s);
-
-	/* Just in case ... */
-	exit(255);
-}
-
-void
-relay(s)
-	int s;
-{
-	char buf[8192];
-	int n;
-	fd_set readfds;
-	struct ttys *ttyp;
-
-	/* Don't need our data anymore */
-	/* XXX This makes SunOS barf */
-/*	brk(0); */
-
-	signal(SIGQUIT, slirp_exit);
-	signal(SIGHUP, slirp_exit);
-        signal(SIGINT, slirp_exit);
-	signal(SIGTERM, slirp_exit);
-
-	/* Fudge to get term_raw and term_restore to work */
-	if (NULL == (ttyp = tty_attach (0, slirp_tty))) {
-         lprint ("Error: tty_attach failed in misc.c:relay()\r\n");
-         slirp_exit (1);
-    }
-	ttyp->fd = 0;
-	ttyp->flags |= TTY_CTTY;
-	term_raw(ttyp);
-
-	while (1) {
-		FD_ZERO(&readfds);
-
-		FD_SET(0, &readfds);
-		FD_SET(s, &readfds);
-
-		n = select(s+1, &readfds, (fd_set *)0, (fd_set *)0, (struct timeval *)0);
-
-		if (n <= 0)
-		   slirp_exit(0);
-
-		if (FD_ISSET(0, &readfds)) {
-			n = read(0, buf, 8192);
-			if (n <= 0)
-			   slirp_exit(0);
-			n = writen(s, buf, n);
-			if (n <= 0)
-			   slirp_exit(0);
-		}
-
-		if (FD_ISSET(s, &readfds)) {
-			n = read(s, buf, 8192);
-			if (n <= 0)
-			   slirp_exit(0);
-			n = writen(0, buf, n);
-			if (n <= 0)
-			   slirp_exit(0);
-		}
-	}
-
-	/* Just in case.... */
-	exit(1);
-}
-#endif
-
-#ifdef CONFIG_QEMU
 #include "monitor.h"
 void lprint(const char *format, ...)
@@ -563,159 +284,6 @@ void lprint(const char *format, ...)
     monitor_vprintf(cur_mon, format, args);
     va_end(args);
 }
-#else
-int (*lprint_print) _P((void *, const char *, va_list));
-char *lprint_ptr, *lprint_ptr2, **lprint_arg;
-
-void
-#ifdef __STDC__
-lprint(const char *format, ...)
-#else
-lprint(va_alist) va_dcl
-#endif
-{
-	va_list args;
-
-#ifdef __STDC__
-        va_start(args, format);
-#else
-        char *format;
-        va_start(args);
-        format = va_arg(args, char *);
-#endif
-#if 0
-	/* If we're printing to an sbuf, make sure there's enough room */
-	/* XXX +100? */
-	if (lprint_sb) {
-		if ((lprint_ptr - lprint_sb->sb_wptr) >=
-		    (lprint_sb->sb_datalen - (strlen(format) + 100))) {
-			int deltaw = lprint_sb->sb_wptr - lprint_sb->sb_data;
-			int deltar = lprint_sb->sb_rptr - lprint_sb->sb_data;
-			int deltap = lprint_ptr -         lprint_sb->sb_data;
-
-			lprint_sb->sb_data = (char *)realloc(lprint_sb->sb_data,
-							     lprint_sb->sb_datalen + TCP_SNDSPACE);
-
-			/* Adjust all values */
-			lprint_sb->sb_wptr = lprint_sb->sb_data + deltaw;
-			lprint_sb->sb_rptr = lprint_sb->sb_data + deltar;
-			lprint_ptr =         lprint_sb->sb_data + deltap;
-
-			lprint_sb->sb_datalen += TCP_SNDSPACE;
-		}
-	}
-#endif
-	if (lprint_print)
-	   lprint_ptr += (*lprint_print)(*lprint_arg, format, args);
-
-	/* Check if they want output to be logged to file as well */
-	if (lfd) {
-		/*
-		 * Remove \r's
-		 * otherwise you'll get ^M all over the file
-		 */
-		int len = strlen(format);
-		char *bptr1, *bptr2;
-
-		bptr1 = bptr2 = strdup(format);
-
-		while (len--) {
-			if (*bptr1 == '\r')
-			   memcpy(bptr1, bptr1+1, len+1);
-			else
-			   bptr1++;
-		}
-		vfprintf(lfd, bptr2, args);
-		free(bptr2);
-	}
-	va_end(args);
-}
-
-void
-add_emu(buff)
-	char *buff;
-{
-	u_int lport, fport;
-	u_int8_t tos = 0, emu = 0;
-	char buff1[256], buff2[256], buff4[128];
-	char *buff3 = buff4;
-	struct emu_t *emup;
-	struct socket *so;
-
-	if (sscanf(buff, "%256s %256s", buff2, buff1) != 2) {
-		lprint("Error: Bad arguments\r\n");
-		return;
-	}
-
-	if (sscanf(buff1, "%d:%d", &lport, &fport) != 2) {
-		lport = 0;
-		if (sscanf(buff1, "%d", &fport) != 1) {
-			lprint("Error: Bad first argument\r\n");
-			return;
-		}
-	}
-
-	if (sscanf(buff2, "%128[^:]:%128s", buff1, buff3) != 2) {
-		buff3 = 0;
-		if (sscanf(buff2, "%256s", buff1) != 1) {
-			lprint("Error: Bad second argument\r\n");
-			return;
-		}
-	}
-
-	if (buff3) {
-		if (strcmp(buff3, "lowdelay") == 0)
-		   tos = IPTOS_LOWDELAY;
-		else if (strcmp(buff3, "throughput") == 0)
-		   tos = IPTOS_THROUGHPUT;
-		else {
-			lprint("Error: Expecting \"lowdelay\"/\"throughput\"\r\n");
-			return;
-		}
-	}
-
-	if (strcmp(buff1, "ftp") == 0)
-	   emu = EMU_FTP;
-	else if (strcmp(buff1, "irc") == 0)
-	   emu = EMU_IRC;
-	else if (strcmp(buff1, "none") == 0)
-	   emu = EMU_NONE; /* ie: no emulation */
-	else {
-		lprint("Error: Unknown service\r\n");
-		return;
-	}
-
-	/* First, check that it isn't already emulated */
-	for (emup = tcpemu; emup; emup = emup->next) {
-		if (emup->lport == lport && emup->fport == fport) {
-			lprint("Error: port already emulated\r\n");
-			return;
-		}
-	}
-
-	/* link it */
-	emup = (struct emu_t *)malloc(sizeof (struct emu_t));
-	emup->lport = (u_int16_t)lport;
-	emup->fport = (u_int16_t)fport;
-	emup->tos = tos;
-	emup->emu = emu;
-	emup->next = tcpemu;
-	tcpemu = emup;
-
-	/* And finally, mark all current sessions, if any, as being emulated */
-	for (so = tcb.so_next; so != &tcb; so = so->so_next) {
-		if ((lport && lport == ntohs(so->so_lport)) ||
-		    (fport && fport == ntohs(so->so_fport))) {
-			if (emu)
-			   so->so_emu = emu;
-			if (tos)
-			   so->so_iptos = tos;
-		}
-	}
-
-	lprint("Adding emulation for %s to port %d/%d\r\n", buff1, emup->lport, emup->fport);
-}
-#endif
 #ifdef BAD_SPRINTF
@@ -817,99 +385,6 @@ fd_block(int fd)
 #endif
 }
-
-#if 0
-/*
- * invoke RSH
- */
-int
-rsh_exec(so,ns, user, host, args)
-	struct socket *so;
-	struct socket *ns;
-	char *user;
-	char *host;
-	char *args;
-{
-	int fd[2];
-	int fd0[2];
-	int s;
-	char buff[256];
-
-	DEBUG_CALL("rsh_exec");
-	DEBUG_ARG("so = %lx", (long)so);
-
-	if (pipe(fd)<0) {
-          lprint("Error: pipe failed: %s\n", strerror(errno));
-          return 0;
-	}
-/* #ifdef HAVE_SOCKETPAIR */
-#if 1
-        if (socketpair(PF_UNIX,SOCK_STREAM,0, fd0) == -1) {
-          close(fd[0]);
-          close(fd[1]);
-          lprint("Error: openpty failed: %s\n", strerror(errno));
-          return 0;
-        }
-#else
-        if (slirp_openpty(&fd0[0], &fd0[1]) == -1) {
-          close(fd[0]);
-          close(fd[1]);
-          lprint("Error: openpty failed: %s\n", strerror(errno));
-          return 0;
-        }
-#endif
-
-	switch(fork()) {
-	 case -1:
-           lprint("Error: fork failed: %s\n", strerror(errno));
-           close(fd[0]);
-           close(fd[1]);
-           close(fd0[0]);
-           close(fd0[1]);
-           return 0;
-
-	 case 0:
-           close(fd[0]);
-           close(fd0[0]);
-
-		/* Set the DISPLAY */
-           if (x_port >= 0) {
-#ifdef HAVE_SETENV
-             sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
-             setenv("DISPLAY", buff, 1);
-#else
-             sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
-             putenv(buff);
-#endif
-           }
-
-           dup2(fd0[1], 0);
-           dup2(fd0[1], 1);
-           dup2(fd[1], 2);
-           for (s = 3; s <= 255; s++)
-             close(s);
-
-           execlp("rsh","rsh","-l", user, host, args, NULL);
-
-           /* Ooops, failed, let's tell the user why */
-
-           sprintf(buff, "Error: execlp of %s failed: %s\n",
-                   "rsh", strerror(errno));
-           write(2, buff, strlen(buff)+1);
-           close(0); close(1); close(2); /* XXX */
-           exit(1);
-
-        default:
-          close(fd[1]);
-          close(fd0[1]);
-          ns->s=fd[0];
-          so->s=fd0[0];
-
-          return 1;
-	}
-}
-#endif
-
 void slirp_connection_info(Monitor *mon)
 {
     const char * const tcpstates[] = {
@@ -19,10 +19,6 @@ struct ex_list {
 extern struct ex_list *exec_list;
 extern u_int time_fasttimo, last_slowtimo;
-extern int (*lprint_print) _P((void *, const char *, va_list));
-extern char *lprint_ptr, *lprint_ptr2, **lprint_arg;
-extern struct sbuf *lprint_sb;
-
 #ifndef HAVE_STRDUP
 char *strdup _P((const char *));
 #endif
@@ -63,10 +59,6 @@ struct emu_t {
 	struct emu_t *next;
 };
-#ifndef CONFIG_QEMU
-extern struct emu_t *tcpemu;
-#endif
-
 extern int x_port, x_server, x_display;
 int show_x _P((char *, struct socket *));
@@ -9,14 +9,6 @@
 static void sbappendsb(struct sbuf *sb, struct mbuf *m);
-/* Done as a macro in socket.h */
-/* int
- * sbspace(struct sockbuff *sb)
- * {
- *	return SB_DATALEN - sb->sb_cc;
- * }
- */
-
 void
 sbfree(struct sbuf *sb)
 {
@@ -55,7 +55,6 @@ int slirp_restrict;
 static int do_slowtimo;
 int link_up;
 struct timeval tt;
-FILE *lfd;
 struct ex_list *exec_list;
 /* XXX: suppress those select globals */
@@ -96,16 +95,6 @@ static int get_dns_addr(struct in_addr *pdns_addr)
     pIPAddr = &(FixedInfo->DnsServerList);
     inet_aton(pIPAddr->IpAddress.String, &tmp_addr);
     *pdns_addr = tmp_addr;
-#if 0
-    printf( "DNS Servers:\n" );
-    printf( "DNS Addr:%s\n", pIPAddr->IpAddress.String );
-
-    pIPAddr = FixedInfo -> DnsServerList.Next;
-    while ( pIPAddr ) {
-            printf( "DNS Addr:%s\n", pIPAddr ->IpAddress.String );
-            pIPAddr = pIPAddr ->Next;
-    }
-#endif
     if (FixedInfo) {
         GlobalFree(FixedInfo);
         FixedInfo = NULL;
@@ -179,8 +168,6 @@ void slirp_init(int restricted, struct in_addr vnetwork,
                 const char *bootfile, struct in_addr vdhcp_start,
                 struct in_addr vnameserver)
 {
-    //    debug_init("/tmp/slirp.log", DEBUG_DEFAULT);
-
 #ifdef _WIN32
     WSADATA Data;
 #ifndef __COMMON_H__
 #define __COMMON_H__
-#define CONFIG_QEMU
-
 //#define DEBUG 1
 // Uncomment the following line to enable SLIRP statistics printing in Qemu
@@ -14,9 +12,6 @@
 #define STAT(expr) do { } while(0)
 #endif
-#ifndef CONFIG_QEMU
-#include "version.h"
-#endif
 #include "config-host.h"
 #include "slirp_config.h"
@@ -223,8 +218,6 @@ int inet_aton _P((const char *cp, struct in_addr *ia));
 #include "tftp.h"
 #include "libslirp.h"
-extern struct ttys *ttys_unit[MAX_INTERFACES];
-
 #ifndef NULL
 #define NULL (void *)0
 #endif
@@ -15,14 +15,6 @@
 static void sofcantrcvmore(struct socket *so);
 static void sofcantsendmore(struct socket *so);
-#if 0
-static void
-so_init()
-{
-	/* Nothing yet */
-}
-#endif
-
 struct socket *
 solookup(struct socket *head, struct in_addr laddr, u_int lport,
          struct in_addr faddr, u_int fport)
@@ -526,12 +518,6 @@ sorecvfrom(struct socket *so)
 		so->so_expire = curtime + SO_EXPIRE;
 	    }
-	    /*		if (m->m_len == len) {
-	     *			m_inc(m, MINCSIZE);
-	     *			m->m_len = 0;
-	     *		}
-	     */
-
 	    /*
 	     * If this packet was destined for CTL_ADDR,
 	     * make it look like that's where it came from, done by udp_output
@@ -604,7 +590,6 @@ tcp_listen(u_int32_t haddr, u_int hport, u_int32_t laddr, u_int lport, int flags
 	DEBUG_ARG("flags = %x", flags);
 	if ((so = socreate()) == NULL) {
-	  /* free(so);      Not sofree() ??? free(NULL) == NOP */
 	  return NULL;
 	}
@@ -659,33 +644,6 @@ tcp_listen(u_int32_t haddr, u_int hport, u_int32_t laddr, u_int lport, int flags
 	return so;
 }
-#if 0
-/*
- * Data is available in so_rcv
- * Just write() the data to the socket
- * XXX not yet...
- */
-static void
-sorwakeup(so)
-	struct socket *so;
-{
-/*	sowrite(so); */
-/*	FD_CLR(so->s,&writefds); */
-}
-
-/*
- * Data has been freed in so_snd
- * We have room for a read() if we want to
- * For now, don't read, it'll be done in the main loop
- */
-static void
-sowwakeup(so)
-	struct socket *so;
-{
-	/* Nothing, yet */
-}
-#endif
-
 /*
  * Various session state calls
  * XXX Should be #define's
@@ -746,17 +704,6 @@ sofcantsendmore(struct socket *so)
 	}
 }
-void
-soisfdisconnected(struct socket *so)
-{
-/*	so->so_state &= ~(SS_ISFCONNECTING|SS_ISFCONNECTED); */
-/*	close(so->s); */
-/*	so->so_state = SS_ISFDISCONNECTED; */
-	/*
-	 * XXX Do nothing ... ?
-	 */
-}
-
 /*
  * Set write drain mode
  * Set CANTSENDMORE once all data has been write()n
@@ -5,8 +5,6 @@
  * terms and conditions of the copyright.
  */
-/* MINE */
-
 #ifndef _SLIRP_SOCKET_H_
 #define _SLIRP_SOCKET_H_
@@ -64,7 +62,6 @@ struct socket {
 #define SS_ISFCONNECTED		0x004	/* Socket is connected to peer */
 #define SS_FCANTRCVMORE		0x008	/* Socket can't receive more from peer (for half-closes) */
 #define SS_FCANTSENDMORE	0x010	/* Socket can't send more to peer (for half-closes) */
-/* #define SS_ISFDISCONNECTED	0x020*/	/* Socket has disconnected from peer, in 2MSL state */
 #define SS_FWDRAIN		0x040	/* We received a FIN, drain data and set SS_FCANTSENDMORE */
 #define SS_CTL			0x080
@@ -89,7 +86,6 @@ int sosendto _P((struct socket *, struct mbuf *));
 struct socket * tcp_listen _P((u_int32_t, u_int, u_int32_t, u_int, int));
 void soisfconnecting _P((register struct socket *));
 void soisfconnected _P((register struct socket *));
-void soisfdisconnected _P((struct socket *));
 void sofwdrain _P((struct socket *));
 struct iovec; /* For win32 */
 size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
@@ -113,7 +113,6 @@ struct tcphdr {
 #undef TCP_NODELAY
 #define	TCP_NODELAY	0x01	/* don't delay send to coalesce packets */
 #undef TCP_MAXSEG
-/* #define	TCP_MAXSEG	0x02 */	/* set maximum segment size */
 /*
  * TCP FSM state definitions.
@@ -81,7 +81,6 @@ tcp_seq tcp_iss;                /* tcp initial send seq # */
 		       if (tcp_emu((so),(m))) sbappend((so), (m)); \
 	       } else \
 	       	       sbappend((so), (m)); \
-/*               sorwakeup(so); */ \
 	} else {\
                (flags) = tcp_reass((tp), (ti), (m)); \
                tp->t_flags |= TF_ACKNOW; \
@@ -101,7 +100,6 @@ tcp_seq tcp_iss;                /* tcp initial send seq # */
 			if (tcp_emu((so),(m))) sbappend(so, (m)); \
 		} else \
 			sbappend((so), (m)); \
-/*		sorwakeup(so); */ \
 	} else { \
 		(flags) = tcp_reass((tp), (ti), (m)); \
 		tp->t_flags |= TF_ACKNOW; \
@@ -211,7 +209,6 @@ present:
 		remque(tcpiphdr2qlink(ti));
 		m = ti->ti_mbuf;
 		ti = tcpiphdr_next(ti);
-/*		if (so->so_state & SS_FCANTRCVMORE) */
 		if (so->so_state & SS_FCANTSENDMORE)
 			m_freem(m);
 		else {
@@ -221,7 +218,6 @@ present:
 				sbappend(so, m);
 		}
 	} while (ti != (struct tcpiphdr *)tp && ti->ti_seq == tp->rcv_nxt);
-/*	sorwakeup(so); */
 	return (flags);
 }
@@ -241,11 +237,9 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso)
 	register int tiflags;
         struct socket *so = NULL;
 	int todrop, acked, ourfinisacked, needoutput = 0;
-/*	int dropsocket = 0; */
 	int iss = 0;
 	u_long tiwin;
 	int ret;
-/*	int ts_present = 0; */
     struct ex_list *ex_ptr;
 	DEBUG_CALL("tcp_input");
@@ -300,9 +294,6 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso)
 	ti->ti_x1 = 0;
 	ti->ti_len = htons((u_int16_t)tlen);
 	len = sizeof(struct ip ) + tlen;
-	/* keep checksum for ICMP reply
-	 * ti->ti_sum = cksum(m, len);
-	 * if (ti->ti_sum) { */
 	if(cksum(m, len)) {
 	  STAT(tcpstat.tcps_rcvbadsum++);
 	  goto drop;
@@ -322,25 +313,6 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso)
 	if (off > sizeof (struct tcphdr)) {
 	  optlen = off - sizeof (struct tcphdr);
 	  optp = mtod(m, caddr_t) + sizeof (struct tcpiphdr);
-
-		/*
-		 * Do quick retrieval of timestamp options ("options
-		 * prediction?").  If timestamp is the only option and it's
-		 * formatted as recommended in RFC 1323 appendix A, we
-		 * quickly get the values now and not bother calling
-		 * tcp_dooptions(), etc.
-		 */
-/*		if ((optlen == TCPOLEN_TSTAMP_APPA ||
- *		     (optlen > TCPOLEN_TSTAMP_APPA &&
- *			optp[TCPOLEN_TSTAMP_APPA] == TCPOPT_EOL)) &&
- *		     *(u_int32_t *)optp == htonl(TCPOPT_TSTAMP_HDR) &&
- *		     (ti->ti_flags & TH_SYN) == 0) {
- *			ts_present = 1;
- *			ts_val = ntohl(*(u_int32_t *)(optp + 4));
- *			ts_ecr = ntohl(*(u_int32_t *)(optp + 8));
- *			optp = NULL;   / * we've parsed the options * /
- *		}
- */
 	}
 	tiflags = ti->ti_flags;
@@ -411,9 +383,6 @@ findso:
 	  sbreserve(&so->so_snd, TCP_SNDSPACE);
 	  sbreserve(&so->so_rcv, TCP_RCVSPACE);
-	  /*		tcp_last_so = so; */  /* XXX ? */
-	  /*		tp = sototcpcb(so);    */
-
 	  so->so_laddr = ti->ti_src;
 	  so->so_lport = ti->ti_sport;
 	  so->so_faddr = ti->ti_dst;
@@ -442,12 +411,7 @@ findso:
 	if (tp->t_state == TCPS_CLOSED)
 		goto drop;
-	/* Unscale the window into a 32-bit value. */
-/*	if ((tiflags & TH_SYN) == 0)
- *		tiwin = ti->ti_win << tp->snd_scale;
- *	else
- */
-		tiwin = ti->ti_win;
+	tiwin = ti->ti_win;
 	/*
 	 * Segment received on connection.
@@ -465,8 +429,6 @@ findso:
 	 */
 	if (optp && tp->t_state != TCPS_LISTEN)
 		tcp_dooptions(tp, (u_char *)optp, optlen, ti);
-/* , */
-/*			&ts_present, &ts_val, &ts_ecr); */
 	/*
 	 * Header prediction: check for the two common cases
@@ -488,20 +450,9 @@ findso:
 	 */
 	if (tp->t_state == TCPS_ESTABLISHED &&
 	    (tiflags & (TH_SYN|TH_FIN|TH_RST|TH_URG|TH_ACK)) == TH_ACK &&
-/*	    (!ts_present || TSTMP_GEQ(ts_val, tp->ts_recent)) && */
 	    ti->ti_seq == tp->rcv_nxt &&
 	    tiwin && tiwin == tp->snd_wnd &&
 	    tp->snd_nxt == tp->snd_max) {
-		/*
-		 * If last ACK falls within this segment's sequence numbers,
-		 *  record the timestamp.
-		 */
-/*		if (ts_present && SEQ_LEQ(ti->ti_seq, tp->last_ack_sent) &&
- *		   SEQ_LT(tp->last_ack_sent, ti->ti_seq + ti->ti_len)) {
- *			tp->ts_recent_age = tcp_now;
- *			tp->ts_recent = ts_val;
- *		}
- */
 		if (ti->ti_len == 0) {
 			if (SEQ_GT(ti->ti_ack, tp->snd_una) &&
 			    SEQ_LEQ(ti->ti_ack, tp->snd_max) &&
@@ -510,11 +461,8 @@ findso:
 				 * this is a pure ack for outstanding data.
 				 */
 				STAT(tcpstat.tcps_predack++);
-/*				if (ts_present)
- *					tcp_xmit_timer(tp, tcp_now-ts_ecr+1);
- *				else
- */				     if (tp->t_rtt &&
-					    SEQ_GT(ti->ti_ack, tp->t_rtseq))
+				if (tp->t_rtt &&
+				    SEQ_GT(ti->ti_ack, tp->t_rtseq))
 					tcp_xmit_timer(tp, tp->t_rtt);
 				acked = ti->ti_ack - tp->snd_una;
 				STAT(tcpstat.tcps_rcvackpack++);
@@ -538,13 +486,6 @@ findso:
 					tp->t_timer[TCPT_REXMT] = tp->t_rxtcur;
 				/*
-				 * There's room in so_snd, sowwakup will read()
-				 * from the socket if we can
-				 */
-/*				if (so->so_snd.sb_flags & SB_NOTIFY)
- *					sowwakeup(so);
- */
-				/*
 				 * This is called because sowwakeup might have
 				 * put data into so_snd.  Since we don't so sowwakeup,
 				 * we don't need this.. XXX???
@@ -575,13 +516,6 @@ findso:
 				sbappend(so, m);
 			/*
-			 * XXX This is called when data arrives.  Later, check
-			 * if we can actually write() to the socket
-			 * XXX Need to check? It's be NON_BLOCKING
-			 */
-/*			sorwakeup(so); */
-
-			/*
 			 * If this is a short packet, then ACK now - with Nagel
 			 *	congestion avoidance sender won't send more until
 			 *	he gets an ACK.
@@ -644,13 +578,6 @@ findso:
 	      vnetwork_addr.s_addr) {
 	    if (so->so_faddr.s_addr != vhost_addr.s_addr &&
 		so->so_faddr.s_addr != vnameserver_addr.s_addr) {
-#if 0
-	      if(lastbyte==CTL_CMD || lastbyte==CTL_EXEC) {
-		/* Command or exec adress */
-		so->so_state |= SS_CTL;
-	      } else
-#endif
-              {
 		/* May be an add exec */
 		for(ex_ptr = exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
 		  if(ex_ptr->ex_fport == so->so_fport &&
@@ -659,8 +586,9 @@ findso:
 		    break;
 		  }
 		}
-	      }
-	      if(so->so_state & SS_CTL) goto cont_input;
+		if (so->so_state & SS_CTL) {
+		    goto cont_input;
+		}
 	    }
 	    /* CTL_ALIAS: Do nothing, tcp_fconnect will be called on it */
 	  }
@@ -718,8 +646,6 @@ findso:
 	  if (optp)
 	    tcp_dooptions(tp, (u_char *)optp, optlen, ti);
-	  /* , */
-	  /*				&ts_present, &ts_val, &ts_ecr); */
 	  if (iss)
 	    tp->iss = iss;
@@ -777,13 +703,6 @@ findso:
 			soisfconnected(so);
 			tp->t_state = TCPS_ESTABLISHED;
-			/* Do window scaling on this connection? */
-/*			if ((tp->t_flags & (TF_RCVD_SCALE|TF_REQ_SCALE)) ==
- *				(TF_RCVD_SCALE|TF_REQ_SCALE)) {
- * 				tp->snd_scale = tp->requested_s_scale;
- *				tp->rcv_scale = tp->request_r_scale;
- *			}
- */
 			(void) tcp_reass(tp, (struct tcpiphdr *)0,
 				(struct mbuf *)0);
 			/*
@@ -816,40 +735,10 @@ trimthenstep6:
 	} /* switch tp->t_state */
 	/*
 	 * States other than LISTEN or SYN_SENT.
-	 * First check timestamp, if present.
-	 * Then check that at least some bytes of segment are within
+	 * Check that at least some bytes of segment are within
 	 * receive window.  If segment begins before rcv_nxt,
 	 * drop leading data (and SYN); if nothing left, just ack.
-	 *
-	 * RFC 1323 PAWS: If we have a timestamp reply on this segment
-	 * and it's less than ts_recent, drop it.
 	 */
-/*	if (ts_present && (tiflags & TH_RST) == 0 && tp->ts_recent &&
- *	    TSTMP_LT(ts_val, tp->ts_recent)) {
- *
- */		/* Check to see if ts_recent is over 24 days old.  */
-/*		if ((int)(tcp_now - tp->ts_recent_age) > TCP_PAWS_IDLE) {
- */			/*
- *			 * Invalidate ts_recent.  If this segment updates
- *			 * ts_recent, the age will be reset later and ts_recent
- *			 * will get a valid value.  If it does not, setting
- *			 * ts_recent to zero will at least satisfy the
- *			 * requirement that zero be placed in the timestamp
- *			 * echo reply when ts_recent isn't valid.  The
- *			 * age isn't reset until we get a valid ts_recent
- *			 * because we don't want out-of-order segments to be
- *			 * dropped when ts_recent is old.
- *			 */
-/*			tp->ts_recent = 0;
- *		} else {
- *			tcpstat.tcps_rcvduppack++;
- *			tcpstat.tcps_rcvdupbyte += ti->ti_len;
- *			tcpstat.tcps_pawsdrop++;
- *			goto dropafterack;
- *		}
- *	}
- */
-
 	todrop = tp->rcv_nxt - ti->ti_seq;
 	if (todrop > 0) {
 		if (tiflags & TH_SYN) {
@@ -948,18 +837,6 @@ trimthenstep6:
 	}
 	/*
-	 * If last ACK falls within this segment's sequence numbers,
-	 * record its timestamp.
-	 */
-/*	if (ts_present && SEQ_LEQ(ti->ti_seq, tp->last_ack_sent) &&
- *	    SEQ_LT(tp->last_ack_sent, ti->ti_seq + ti->ti_len +
- *		   ((tiflags & (TH_SYN|TH_FIN)) != 0))) {
- *		tp->ts_recent_age = tcp_now;
- *		tp->ts_recent = ts_val;
- *	}
- */
-
-	/*
 	 * If the RST bit is set examine the state:
 	 *    SYN_RECEIVED STATE:
 	 *	If passive open, return to LISTEN state.
@@ -972,15 +849,10 @@ trimthenstep6:
 	if (tiflags&TH_RST) switch (tp->t_state) {
 	case TCPS_SYN_RECEIVED:
-/*		so->so_error = ECONNREFUSED; */
-		goto close;
-
 	case TCPS_ESTABLISHED:
 	case TCPS_FIN_WAIT_1:
 	case TCPS_FIN_WAIT_2:
 	case TCPS_CLOSE_WAIT:
-/*		so->so_error = ECONNRESET; */
-	close:
 		tp->t_state = TCPS_CLOSED;
 		STAT(tcpstat.tcps_drops++);
 		tp = tcp_close(tp);
@@ -1048,13 +920,6 @@ trimthenstep6:
 		  soisfconnected(so);
 		}
-		/* Do window scaling? */
-/*		if ((tp->t_flags & (TF_RCVD_SCALE|TF_REQ_SCALE)) ==
- *			(TF_RCVD_SCALE|TF_REQ_SCALE)) {
- *			tp->snd_scale = tp->requested_s_scale;
- *			tp->rcv_scale = tp->request_r_scale;
- *		}
- */
 		(void) tcp_reass(tp, (struct tcpiphdr *)0, (struct mbuf *)0);
 		tp->snd_wl1 = ti->ti_seq - 1;
 		/* Avoid ack processing; snd_una==ti_ack  =>  dup ack */
@@ -1155,19 +1020,13 @@ trimthenstep6:
 		STAT(tcpstat.tcps_rcvackbyte += acked);
 		/*
-		 * If we have a timestamp reply, update smoothed
-		 * round trip time.  If no timestamp is present but
-		 * transmit timer is running and timed sequence
+		 * If transmit timer is running and timed sequence
 		 * number was acked, update smoothed round trip time.
 		 * Since we now have an rtt measurement, cancel the
 		 * timer backoff (cf., Phil Karn's retransmit alg.).
 		 * Recompute the initial retransmit timer.
 		 */
-/*		if (ts_present)
- *			tcp_xmit_timer(tp, tcp_now-ts_ecr+1);
- *		else
- */
-		     if (tp->t_rtt && SEQ_GT(ti->ti_ack, tp->t_rtseq))
+		if (tp->t_rtt && SEQ_GT(ti->ti_ack, tp->t_rtseq))
 			tcp_xmit_timer(tp,tp->t_rtt);
 		/*
@@ -1205,13 +1064,6 @@ trimthenstep6:
 			tp->snd_wnd -= acked;
 			ourfinisacked = 0;
 		}
-		/*
-		 * XXX sowwakup is called when data is acked and there's room for
-		 * for more data... it should read() the socket
-		 */
-/*		if (so->so_snd.sb_flags & SB_NOTIFY)
- *			sowwakeup(so);
- */
 		tp->snd_una = ti->ti_ack;
 		if (SEQ_LT(tp->snd_nxt, tp->snd_una))
 			tp->snd_nxt = tp->snd_una;
@@ -1233,7 +1085,6 @@ trimthenstep6:
 				 * we'll hang forever.
 				 */
 				if (so->so_state & SS_FCANTRCVMORE) {
-					soisfdisconnected(so);
 					tp->t_timer[TCPT_2MSL] = TCP_MAXIDLE;
 				}
 				tp->t_state = TCPS_FIN_WAIT_2;
@@ -1251,7 +1102,6 @@ trimthenstep6:
 				tp->t_state = TCPS_TIME_WAIT;
 				tcp_canceltimers(tp);
 				tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL;
-				soisfdisconnected(so);
 			}
 			break;
@@ -1384,7 +1234,6 @@ dodata:
 			 * will got to TCPS_LAST_ACK, and use tcp_output()
 			 * to send the FIN.
 			 */
-/*			sofcantrcvmore(so); */
 			sofwdrain(so);
 			tp->t_flags |= TF_ACKNOW;
@@ -1421,7 +1270,6 @@ dodata:
 			tp->t_state = TCPS_TIME_WAIT;
 			tcp_canceltimers(tp);
 			tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL;
-			soisfdisconnected(so);
 			break;
 		/*
@@ -1440,13 +1288,6 @@ dodata:
 	 *
 	 * See above.
 	 */
-/*	if (ti->ti_len && (unsigned)ti->ti_len < tp->t_maxseg) {
- */
-/*	if ((ti->ti_len && (unsigned)ti->ti_len < tp->t_maxseg &&
- *		(so->so_iptos & IPTOS_LOWDELAY) == 0) ||
- *	       ((so->so_iptos & IPTOS_LOWDELAY) &&
- *	       ((struct tcpiphdr_2 *)ti)->first_char == (char)27)) {
- */
 	if (ti->ti_len && (unsigned)ti->ti_len <= 5 &&
 	    ((struct tcpiphdr_2 *)ti)->first_char == (char)27) {
 		tp->t_flags |= TF_ACKNOW;
@@ -1493,10 +1334,6 @@ drop:
 	return;
 }
- /* , ts_present, ts_val, ts_ecr) */
-/*	int *ts_present;
- *	u_int32_t *ts_val, *ts_ecr;
- */
 static void
 tcp_dooptions(struct tcpcb *tp, u_char *cp, int cnt, struct tcpiphdr *ti)
 {
@@ -1531,35 +1368,6 @@ tcp_dooptions(struct tcpcb *tp, u_char *cp, int cnt, struct tcpiphdr *ti)
 			NTOHS(mss);
 			(void) tcp_mss(tp, mss);	/* sets t_maxseg */
 			break;
-
-/*		case TCPOPT_WINDOW:
- *			if (optlen != TCPOLEN_WINDOW)
- *				continue;
- *			if (!(ti->ti_flags & TH_SYN))
- *				continue;
- *			tp->t_flags |= TF_RCVD_SCALE;
- *			tp->requested_s_scale = min(cp[2], TCP_MAX_WINSHIFT);
- *			break;
- */
-/*		case TCPOPT_TIMESTAMP:
- *			if (optlen != TCPOLEN_TIMESTAMP)
- *				continue;
- *			*ts_present = 1;
- *			memcpy((char *) ts_val, (char *)cp + 2, sizeof(*ts_val));
- *			NTOHL(*ts_val);
- *			memcpy((char *) ts_ecr, (char *)cp + 6, sizeof(*ts_ecr));
- *			NTOHL(*ts_ecr);
- *
- */			/*
- *			 * A timestamp received in a SYN makes
- *			 * it ok to send timestamp requests and replies.
- *			 */
-/*			if (ti->ti_flags & TH_SYN) {
- *				tp->t_flags |= TF_RCVD_TSTMP;
- *				tp->ts_recent = *ts_val;
- *				tp->ts_recent_age = tcp_now;
- *			}
- */			break;
 		}
 	}
 }
@@ -272,39 +272,9 @@ send:
 			mss = htons((u_int16_t) tcp_mss(tp, 0));
 			memcpy((caddr_t)(opt + 2), (caddr_t)&mss, sizeof(mss));
 			optlen = 4;
-
-/*			if ((tp->t_flags & TF_REQ_SCALE) &&
- *			    ((flags & TH_ACK) == 0 ||
- *			    (tp->t_flags & TF_RCVD_SCALE))) {
- *				*((u_int32_t *) (opt + optlen)) = htonl(
- *					TCPOPT_NOP << 24 |
- *					TCPOPT_WINDOW << 16 |
- *					TCPOLEN_WINDOW << 8 |
- *					tp->request_r_scale);
- *				optlen += 4;
- *			}
- */
 		}
  	}
- 	/*
-	 * Send a timestamp and echo-reply if this is a SYN and our side
-	 * wants to use timestamps (TF_REQ_TSTMP is set) or both our side
-	 * and our peer have sent timestamps in our SYN's.
- 	 */
-/* 	if ((tp->t_flags & (TF_REQ_TSTMP|TF_NOOPT)) == TF_REQ_TSTMP &&
- *	     (flags & TH_RST) == 0 &&
- *	    ((flags & (TH_SYN|TH_ACK)) == TH_SYN ||
- *	     (tp->t_flags & TF_RCVD_TSTMP))) {
- *		u_int32_t *lp = (u_int32_t *)(opt + optlen);
- *
- *		/ * Form timestamp option as shown in appendix A of RFC 1323. *  /
- *		*lp++ = htonl(TCPOPT_TSTAMP_HDR);
- *		*lp++ = htonl(tcp_now);
- *		*lp   = htonl(tp->ts_recent);
- *		optlen += TCPOLEN_TSTAMP_APPA;
- *	}
- */
  	hdrlen += optlen;
 	/*
@@ -334,28 +304,15 @@ send:
 		m = m_get();
 		if (m == NULL) {
-/*			error = ENOBUFS; */
 			error = 1;
 			goto out;
 		}
 		m->m_data += IF_MAXLINKHDR;
 		m->m_len = hdrlen;
-		/*
-		 * This will always succeed, since we make sure our mbufs
-		 * are big enough to hold one MSS packet + header + ... etc.
-		 */
-/*		if (len <= MHLEN - hdrlen - max_linkhdr) { */
-
-			sbcopy(&so->so_snd, off, (int) len, mtod(m, caddr_t) + hdrlen);
-			m->m_len += len;
+		sbcopy(&so->so_snd, off, (int) len, mtod(m, caddr_t) + hdrlen);
+		m->m_len += len;
-/*		} else {
- *			m->m_next = m_copy(so->so_snd.sb_mb, off, (int) len);
- *			if (m->m_next == 0)
- *				len = 0;
- *		}
- */
 		/*
 		 * If we're sending everything we've got, set PUSH.
 		 * (This will keep happy those implementations which only
@@ -376,7 +333,6 @@ send:
 		m = m_get();
 		if (m == NULL) {
-/*			error = ENOBUFS; */
 			error = 1;
 			goto out;
 		}
@@ -433,10 +389,6 @@ send:
 	if (SEQ_GT(tp->snd_up, tp->snd_una)) {
 		ti->ti_urp = htons((u_int16_t)(tp->snd_up - ntohl(ti->ti_seq)));
-#ifdef notdef
-	if (SEQ_GT(tp->snd_up, tp->snd_nxt)) {
-		ti->ti_urp = htons((u_int16_t)(tp->snd_up - tp->snd_nxt));
-#endif
 		ti->ti_flags |= TH_URG;
 	} else
 		/*
@@ -523,32 +475,10 @@ send:
 	((struct ip *)ti)->ip_ttl = IPDEFTTL;
 	((struct ip *)ti)->ip_tos = so->so_iptos;
-/* #if BSD >= 43 */
-	/* Don't do IP options... */
-/*	error = ip_output(m, tp->t_inpcb->inp_options, &tp->t_inpcb->inp_route,
- *	    so->so_options & SO_DONTROUTE, 0);
- */
 	error = ip_output(so, m);
-
-/* #else
- *	error = ip_output(m, (struct mbuf *)0, &tp->t_inpcb->inp_route,
- *	    so->so_options & SO_DONTROUTE);
- * #endif
- */
     }
 	if (error) {
 out:
-/*		if (error == ENOBUFS) {
- *			tcp_quench(tp->t_inpcb, 0);
- *			return (0);
- *		}
- */
-/*		if ((error == EHOSTUNREACH || error == ENETDOWN)
- *		    && TCPS_HAVERCVDSYN(tp->t_state)) {
- *			tp->t_softerror = error;
- *			return (0);
- *		}
- */
 		return (error);
 	}
 	STAT(tcpstat.tcps_sndtotal++);
@@ -574,9 +504,6 @@ tcp_setpersist(struct tcpcb *tp)
 {
     int t = ((tp->t_srtt >> 2) + tp->t_rttvar) >> 1;
-/*	if (tp->t_timer[TCPT_REXMT])
- *		panic("tcp_output REXMT");
- */
 	/*
 	 * Start/restart persistence timer.
 	 */
@@ -60,7 +60,6 @@ tcp_init(void)
  * in a skeletal tcp/ip header, minimizing the amount of work
  * necessary when the connection is used.
  */
-/* struct tcpiphdr * */
 void
 tcp_template(struct tcpcb *tp)
 {
@@ -119,11 +118,7 @@ tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m,
         if (m == NULL) {
 		if ((m = m_get()) == NULL)
 			return;
-#ifdef TCP_COMPAT_42
-		tlen = 1;
-#else
 		tlen = 0;
-#endif
 		m->m_data += IF_MAXLINKHDR;
 		*mtod(m, struct tcpiphdr *) = *ti;
 		ti = mtod(m, struct tcpiphdr *);
@@ -220,12 +215,6 @@ tcp_newtcpcb(struct socket *so)
  */
 struct tcpcb *tcp_drop(struct tcpcb *tp, int err)
 {
-/* tcp_drop(tp, errno)
-	register struct tcpcb *tp;
-	int errno;
-{
-*/
-
 	DEBUG_CALL("tcp_drop");
 	DEBUG_ARG("tp = %lx", (long)tp);
 	DEBUG_ARG("errno = %d", errno);
@@ -236,10 +225,6 @@ struct tcpcb *tcp_drop(struct tcpcb *tp, int err)
 		STAT(tcpstat.tcps_drops++);
 	} else
 		STAT(tcpstat.tcps_conndrops++);
-/*	if (errno == ETIMEDOUT && tp->t_softerror)
- *		errno = tp->t_softerror;
- */
-/*	so->so_error = errno; */
 	return (tcp_close(tp));
 }
@@ -267,14 +252,8 @@ tcp_close(struct tcpcb *tp)
 		remque(tcpiphdr2qlink(tcpiphdr_prev(t)));
 		m_freem(m);
 	}
-	/* It's static */
-/*	if (tp->t_template)
- *		(void) m_free(dtom(tp->t_template));
- */
-/*	free(tp, M_PCB);  */
 	free(tp);
         so->so_tcpcb = NULL;
-	soisfdisconnected(so);
 	/* clobber input socket cache if we're closing the cached connection */
 	if (so == tcp_last_so)
 		tcp_last_so = &tcb;
@@ -286,30 +265,6 @@ tcp_close(struct tcpcb *tp)
 	return ((struct tcpcb *)0);
 }
-#ifdef notdef
-void
-tcp_drain()
-{
-	/* XXX */
-}
-
-/*
- * When a source quench is received, close congestion window
- * to one segment.  We will gradually open it again as we proceed.
- */
-void
-tcp_quench(i, errno)
-
-	int errno;
-{
-	struct tcpcb *tp = intotcpcb(inp);
-
-	if (tp)
-		tp->snd_cwnd = tp->t_maxseg;
-}
-
-#endif /* notdef */
-
 /*
  * TCP protocol interface to socket abstraction.
  */
@@ -349,9 +304,6 @@ tcp_sockclosed(struct tcpcb *tp)
 		tp->t_state = TCPS_LAST_ACK;
 		break;
 	}
-/*	soisfdisconnecting(tp->t_socket); */
-	if (tp && tp->t_state >= TCPS_FIN_WAIT_2)
-		soisfdisconnected(tp->t_socket);
 	if (tp)
 		tcp_output(tp);
 }
@@ -490,13 +442,6 @@ tcp_connect(struct socket *inso)
 	tcp_template(tp);
-	/* Compute window scaling to request.  */
-/*	while (tp->request_r_scale < TCP_MAX_WINSHIFT &&
- *		(TCP_MAXWIN << tp->request_r_scale) < so->so_rcv.sb_hiwat)
- *		tp->request_r_scale++;
- */
-
-/*	soisconnecting(so); */ /* NOFDREF used instead */
 	STAT(tcpstat.tcps_connattempt++);
 	tp->t_state = TCPS_SYN_SENT;
@@ -540,10 +485,7 @@ static const struct tos_t tcptos[] = {
 	  {0, 0, 0, 0}
 };
-#ifdef CONFIG_QEMU
-static
-#endif
-struct emu_t *tcpemu = NULL;
+static struct emu_t *tcpemu = NULL;
 /*
  * Return TOS according to the above table
@@ -575,10 +517,6 @@ tcp_tos(struct socket *so)
 	return 0;
 }
-#if 0
-int do_echo = -1;
-#endif
-
 /*
  * Emulate programs that try and connect to us
  * This includes ftp (the data connection is
@@ -661,302 +599,6 @@ tcp_emu(struct socket *so, struct mbuf *m)
 			return 0;
 		}
-#if 0
-	 case EMU_RLOGIN:
-		/*
-		 * Rlogin emulation
-		 * First we accumulate all the initial option negotiation,
-		 * then fork_exec() rlogin according to the  options
-		 */
-		{
-			int i, i2, n;
-			char *ptr;
-			char args[100];
-			char term[100];
-			struct sbuf *so_snd = &so->so_snd;
-			struct sbuf *so_rcv = &so->so_rcv;
-
-			/* First check if they have a priveladged port, or too much data has arrived */
-			if (ntohs(so->so_lport) > 1023 || ntohs(so->so_lport) < 512 ||
-			    (m->m_len + so_rcv->sb_wptr) > (so_rcv->sb_data + so_rcv->sb_datalen)) {
-				memcpy(so_snd->sb_wptr, "Permission denied\n", 18);
-				so_snd->sb_wptr += 18;
-				so_snd->sb_cc += 18;
-				tcp_sockclosed(sototcpcb(so));
-				m_free(m);
-				return 0;
-			}
-
-			/* Append the current data */
-			memcpy(so_rcv->sb_wptr, m->m_data, m->m_len);
-			so_rcv->sb_wptr += m->m_len;
-			so_rcv->sb_rptr += m->m_len;
-			m_free(m);
-
-			/*
-			 * Check if we have all the initial options,
-			 * and build argument list to rlogin while we're here
-			 */
-			n = 0;
-			ptr = so_rcv->sb_data;
-			args[0] = 0;
-			term[0] = 0;
-			while (ptr < so_rcv->sb_wptr) {
-				if (*ptr++ == 0) {
-					n++;
-					if (n == 2) {
-						sprintf(args, "rlogin -l %s %s",
-							ptr, inet_ntoa(so->so_faddr));
-					} else if (n == 3) {
-						i2 = so_rcv->sb_wptr - ptr;
-						for (i = 0; i < i2; i++) {
-							if (ptr[i] == '/') {
-								ptr[i] = 0;
-#ifdef HAVE_SETENV
-								sprintf(term, "%s", ptr);
-#else
-								sprintf(term, "TERM=%s", ptr);
-#endif
-								ptr[i] = '/';
-								break;
-							}
-						}
-					}
-				}
-			}
-
-			if (n != 4)
-			   return 0;
-
-			/* We have it, set our term variable and fork_exec() */
-#ifdef HAVE_SETENV
-			setenv("TERM", term, 1);
-#else
-			putenv(term);
-#endif
-			fork_exec(so, args, 2);
-			term[0] = 0;
-			so->so_emu = 0;
-
-			/* And finally, send the client a 0 character */
-			so_snd->sb_wptr[0] = 0;
-			so_snd->sb_wptr++;
-			so_snd->sb_cc++;
-
-			return 0;
-		}
-
-	 case EMU_RSH:
-		/*
-		 * rsh emulation
-		 * First we accumulate all the initial option negotiation,
-		 * then rsh_exec() rsh according to the  options
-		 */
-		{
-			int  n;
-			char *ptr;
-			char *user;
-			char *args;
-			struct sbuf *so_snd = &so->so_snd;
-			struct sbuf *so_rcv = &so->so_rcv;
-
-			/* First check if they have a priveladged port, or too much data has arrived */
-			if (ntohs(so->so_lport) > 1023 || ntohs(so->so_lport) < 512 ||
-			    (m->m_len + so_rcv->sb_wptr) > (so_rcv->sb_data + so_rcv->sb_datalen)) {
-				memcpy(so_snd->sb_wptr, "Permission denied\n", 18);
-				so_snd->sb_wptr += 18;
-				so_snd->sb_cc += 18;
-				tcp_sockclosed(sototcpcb(so));
-				m_free(m);
-				return 0;
-			}
-
-			/* Append the current data */
-			memcpy(so_rcv->sb_wptr, m->m_data, m->m_len);
-			so_rcv->sb_wptr += m->m_len;
-			so_rcv->sb_rptr += m->m_len;
-			m_free(m);
-
-			/*
-			 * Check if we have all the initial options,
-			 * and build argument list to rlogin while we're here
-			 */
-			n = 0;
-			ptr = so_rcv->sb_data;
-			user="";
-			args="";
-			if (so->extra==NULL) {
-				struct socket *ns;
-				struct tcpcb* tp;
-				int port=atoi(ptr);
-				if (port <= 0) return 0;
-                if (port > 1023 || port < 512) {
-                  memcpy(so_snd->sb_wptr, "Permission denied\n", 18);
-                  so_snd->sb_wptr += 18;
-                  so_snd->sb_cc += 18;
-                  tcp_sockclosed(sototcpcb(so));
-                  return 0;
-                }
-				if ((ns=socreate()) == NULL)
-                  return 0;
-				if (tcp_attach(ns)<0) {
-                  free(ns);
-                  return 0;
-				}
-
-				ns->so_laddr=so->so_laddr;
-				ns->so_lport=htons(port);
-
-				(void) tcp_mss(sototcpcb(ns), 0);
-
-				ns->so_faddr=so->so_faddr;
-				ns->so_fport=htons(IPPORT_RESERVED-1); /* Use a fake port. */
-
-				if (ns->so_faddr.s_addr == 0 ||
-					ns->so_faddr.s_addr == loopback_addr.s_addr)
-                  ns->so_faddr = alias_addr;
-
-				ns->so_iptos = tcp_tos(ns);
-				tp = sototcpcb(ns);
-
-				tcp_template(tp);
-
-				/* Compute window scaling to request.  */
-				/*	while (tp->request_r_scale < TCP_MAX_WINSHIFT &&
-				 *		(TCP_MAXWIN << tp->request_r_scale) < so->so_rcv.sb_hiwat)
-				 *		tp->request_r_scale++;
-				 */
-
-                /*soisfconnecting(ns);*/
-
-				STAT(tcpstat.tcps_connattempt++);
-
-				tp->t_state = TCPS_SYN_SENT;
-				tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
-				tp->iss = tcp_iss;
-				tcp_iss += TCP_ISSINCR/2;
-				tcp_sendseqinit(tp);
-				tcp_output(tp);
-				so->extra=ns;
-			}
-			while (ptr < so_rcv->sb_wptr) {
-              if (*ptr++ == 0) {
-                n++;
-                if (n == 2) {
-                  user=ptr;
-                } else if (n == 3) {
-                  args=ptr;
-                }
-              }
-			}
-
-			if (n != 4)
-              return 0;
-
-			rsh_exec(so,so->extra, user, inet_ntoa(so->so_faddr), args);
-			so->so_emu = 0;
-			so->extra=NULL;
-
-			/* And finally, send the client a 0 character */
-			so_snd->sb_wptr[0] = 0;
-			so_snd->sb_wptr++;
-			so_snd->sb_cc++;
-
-			return 0;
-		}
-
-	 case EMU_CTL:
-		{
-			int num;
-			struct sbuf *so_snd = &so->so_snd;
-			struct sbuf *so_rcv = &so->so_rcv;
-
-			/*
-			 * If there is binary data here, we save it in so->so_m
-			 */
-			if (!so->so_m) {
-			  int rxlen;
-			  char *rxdata;
-			  rxdata=mtod(m, char *);
-			  for (rxlen=m->m_len; rxlen; rxlen--) {
-			    if (*rxdata++ & 0x80) {
-			      so->so_m = m;
-			      return 0;
-			    }
-			  }
-			} /* if(so->so_m==NULL) */
-
-			/*
-			 * Append the line
-			 */
-			sbappendsb(so_rcv, m);
-
-			/* To avoid going over the edge of the buffer, we reset it */
-			if (so_snd->sb_cc == 0)
-			   so_snd->sb_wptr = so_snd->sb_rptr = so_snd->sb_data;
-
-			/*
-			 * A bit of a hack:
-			 * If the first packet we get here is 1 byte long, then it
-			 * was done in telnet character mode, therefore we must echo
-			 * the characters as they come.  Otherwise, we echo nothing,
-			 * because in linemode, the line is already echoed
-			 * XXX two or more control connections won't work
-			 */
-			if (do_echo == -1) {
-				if (m->m_len == 1) do_echo = 1;
-				else do_echo = 0;
-			}
-			if (do_echo) {
-			  sbappendsb(so_snd, m);
-			  m_free(m);
-			  tcp_output(sototcpcb(so)); /* XXX */
-			} else
-			  m_free(m);
-
-			num = 0;
-			while (num < so->so_rcv.sb_cc) {
-				if (*(so->so_rcv.sb_rptr + num) == '\n' ||
-				    *(so->so_rcv.sb_rptr + num) == '\r') {
-					int n;
-
-					*(so_rcv->sb_rptr + num) = 0;
-					if (ctl_password && !ctl_password_ok) {
-						/* Need a password */
-						if (sscanf(so_rcv->sb_rptr, "pass %256s", buff) == 1) {
-							if (strcmp(buff, ctl_password) == 0) {
-								ctl_password_ok = 1;
-								n = sprintf(so_snd->sb_wptr,
-									    "Password OK.\r\n");
-								goto do_prompt;
-							}
-						}
-						n = sprintf(so_snd->sb_wptr,
-					 "Error: Password required, log on with \"pass PASSWORD\"\r\n");
-						goto do_prompt;
-					}
-					cfg_quitting = 0;
-					n = do_config(so_rcv->sb_rptr, so, PRN_SPRINTF);
-					if (!cfg_quitting) {
-						/* Register the printed data */
-do_prompt:
-						so_snd->sb_cc += n;
-						so_snd->sb_wptr += n;
-						/* Add prompt */
-						n = sprintf(so_snd->sb_wptr, "Slirp> ");
-						so_snd->sb_cc += n;
-						so_snd->sb_wptr += n;
-					}
-					/* Drop so_rcv data */
-					so_rcv->sb_cc = 0;
-					so_rcv->sb_wptr = so_rcv->sb_rptr = so_rcv->sb_data;
-					tcp_output(sototcpcb(so)); /* Send the reply */
-				}
-				num++;
-			}
-			return 0;
-		}
-#endif
         case EMU_FTP: /* ftp */
                 *(m->m_data+m->m_len) = 0; /* NUL terminate for strstr */
 		if ((bptr = (char *)strstr(m->m_data, "ORT")) != NULL) {
@@ -1100,7 +742,7 @@ do_prompt:
 		 * A typical packet for player version 1.0 (release version):
 		 *
 		 * 0000:50 4E 41 00 05
-		 * 0000:00 01 00 02 1B D7 00 00 67 E6 6C DC 63 00 12 50 .....×..gælÜc..P
+		 * 0000:00 01 00 02 1B D7 00 00 67 E6 6C DC 63 00 12 50 ........g.l.c..P
 		 * 0010:4E 43 4C 49 45 4E 54 20 31 30 31 20 41 4C 50 48 NCLIENT 101 ALPH
 		 * 0020:41 6C 00 00 52 00 17 72 61 66 69 6C 65 73 2F 76 Al..R..rafiles/v
 		 * 0030:6F 61 2F 65 6E 67 6C 69 73 68 5F 2E 72 61 79 42 oa/english_.rayB
@@ -1112,8 +754,8 @@ do_prompt:
 		 *
 		 * A typical packet for player version 2.0 (beta):
 		 *
-		 * 0000:50 4E 41 00 06 00 02 00 00 00 01 00 02 1B C1 00 PNA...........Á.
-		 * 0010:00 67 75 78 F5 63 00 0A 57 69 6E 32 2E 30 2E 30 .guxõc..Win2.0.0
+		 * 0000:50 4E 41 00 06 00 02 00 00 00 01 00 02 1B C1 00 PNA.............
+		 * 0010:00 67 75 78 F5 63 00 0A 57 69 6E 32 2E 30 2E 30 .gux.c..Win2.0.0
 		 * 0020:2E 35 6C 00 00 52 00 1C 72 61 66 69 6C 65 73 2F .5l..R..rafiles/
 		 * 0030:77 65 62 73 69 74 65 2F 32 30 72 65 6C 65 61 73 website/20releas
 		 * 0040:65 2E 72 61 79 53 00 00 06 36 42                e.rayS...6B
@@ -102,10 +102,6 @@ tpgone:
 		;
 	}
 	tcp_iss += TCP_ISSINCR/PR_SLOWHZ;		/* increment iss */
-#ifdef TCP_COMPAT_42
-	if ((int)tcp_iss < 0)
-		tcp_iss = 0;				/* XXX */
-#endif
 	tcp_now++;					/* for timestamps */
 }
@@ -210,7 +206,6 @@ tcp_timers(register struct tcpcb *tp, int timer)
 		 * retransmit times until then.
 		 */
 		if (tp->t_rxtshift > TCP_MAXRXTSHIFT / 4) {
-/*			in_losing(tp->t_inpcb); */
 			tp->t_rttvar += (tp->t_srtt >> TCP_RTT_SHIFT);
 			tp->t_srtt = 0;
 		}
@@ -275,7 +270,6 @@ tcp_timers(register struct tcpcb *tp, int timer)
 		if (tp->t_state < TCPS_ESTABLISHED)
 			goto dropit;
-/*		if (tp->t_socket->so_options & SO_KEEPALIVE && */
 		if ((SO_OPTIONS) && tp->t_state <= TCPS_CLOSE_WAIT) {
 		    	if (tp->t_idle >= TCPTV_KEEP_IDLE + TCP_MAXIDLE)
 				goto dropit;
@@ -292,17 +286,8 @@ tcp_timers(register struct tcpcb *tp, int timer)
 			 * correspondent TCP to respond.
 			 */
 			STAT(tcpstat.tcps_keepprobe++);
-#ifdef TCP_COMPAT_42
-			/*
-			 * The keepalive packet must have nonzero length
-			 * to get a 4.2 host to respond.
-			 */
-			tcp_respond(tp, &tp->t_template, (struct mbuf *)NULL,
-			    tp->rcv_nxt - 1, tp->snd_una - 1, 0);
-#else
 			tcp_respond(tp, &tp->t_template, (struct mbuf *)NULL,
 			    tp->rcv_nxt, tp->snd_una - 1, 0);
-#endif
 			tp->t_timer[TCPT_KEEP] = TCPTV_KEEPINTVL;
 		} else
 			tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_IDLE;
@@ -310,7 +295,7 @@ tcp_timers(register struct tcpcb *tp, int timer)
 	dropit:
 		STAT(tcpstat.tcps_keepdrops++);
-		tp = tcp_drop(tp, 0); /* ETIMEDOUT); */
+		tp = tcp_drop(tp, 0);
 		break;
 	}
@@ -98,7 +98,6 @@
 #define	TCPTV_KEEPCNT	8			/* max probes before drop */
 #define	TCPTV_MIN	(  1*PR_SLOWHZ)		/* minimum allowable value */
-/* #define	TCPTV_REXMTMAX	( 64*PR_SLOWHZ)	*/	/* max allowable REXMT value */
 #define TCPTV_REXMTMAX  ( 12*PR_SLOWHZ)		/* max allowable REXMT value */
 #define	TCP_LINGERTIME	120			/* linger at most 2 minutes */
@@ -106,11 +105,6 @@
 #define TCP_MAXRXTSHIFT 12                      /* maximum retransmits */
-#ifdef	TCPTIMERS
-char *tcptimers[] =
-    { "REXMT", "PERSIST", "KEEP", "2MSL" };
-#endif
-
 /*
  * Force a time value to be in a certain range.
  */
@@ -61,9 +61,7 @@ struct tcpcb {
 #define	TF_RCVD_TSTMP	0x0100		/* a timestamp was received in SYN */
 #define	TF_SACK_PERMIT	0x0200		/* other side said I could SACK */
-	/* Make it static  for now */
-/*	struct	tcpiphdr *t_template;	/ * skeletal packet for transmit */
-	struct	tcpiphdr t_template;
+	struct	tcpiphdr t_template;    /* static skeletal packet for xmit */
 	struct	socket *t_socket;		/* back pointer to socket */
 /*
@@ -199,7 +197,6 @@ struct tcpstat {
 	u_long	tcps_rcvbyte;		/* bytes received in sequence */
 	u_long	tcps_rcvbadsum;		/* packets received with ccksum errs */
 	u_long	tcps_rcvbadoff;		/* packets received with bad offset */
-/*	u_long	tcps_rcvshort;	*/	/* packets received too short */
 	u_long	tcps_rcvduppack;	/* duplicate-only packets received */
 	u_long	tcps_rcvdupbyte;	/* duplicate-only bytes received */
 	u_long	tcps_rcvpartduppack;	/* packets with some duplicate data */
@@ -215,7 +212,6 @@ struct tcpstat {
 	u_long	tcps_rcvackpack;	/* rcvd ack packets */
 	u_long	tcps_rcvackbyte;	/* bytes acked by rcvd acks */
 	u_long	tcps_rcvwinupd;		/* rcvd window update packets */
-/*	u_long	tcps_pawsdrop;	*/	/* segments dropped due to PAWS */
 	u_long	tcps_predack;		/* times hdr predict ok for acks */
 	u_long	tcps_preddat;		/* times hdr predict ok for data pkts */
 	u_long	tcps_socachemiss;	/* tcp_last_so misses */
@@ -23,7 +23,7 @@
  */
 #include <slirp.h>
-#include "qemu-common.h" // for pstrcpy
+#include "qemu-common.h"
 struct tftp_session {
     int in_use;
@@ -50,16 +50,6 @@ struct socket udb;
 static u_int8_t udp_tos(struct socket *so);
 static void udp_emu(struct socket *so, struct mbuf *m);
-/*
- * UDP protocol implementation.
- * Per RFC 768, August, 1980.
- */
-#ifndef	COMPAT_42
-#define UDPCKSUM 1
-#else
-#define UDPCKSUM 0 /* XXX */
-#endif
-
 struct	socket *udp_last_so = &udb;
 void
@@ -76,7 +66,6 @@ udp_input(register struct mbuf *m, int iphlen)
 {
 	register struct ip *ip;
 	register struct udphdr *uh;
-/*	struct mbuf *opts = 0;*/
 	int len;
 	struct ip save_ip;
 	struct socket *so;
@@ -129,14 +118,10 @@ udp_input(register struct mbuf *m, int iphlen)
 	/*
 	 * Checksum extended UDP header and data.
 	 */
-	if (UDPCKSUM && uh->uh_sum) {
+	if (uh->uh_sum) {
       memset(&((struct ipovly *)ip)->ih_mbuf, 0, sizeof(struct mbuf_ptr));
 	  ((struct ipovly *)ip)->ih_x1 = 0;
 	  ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
-	  /* keep uh_sum for ICMP reply
-	   * uh->uh_sum = cksum(m, len + sizeof (struct ip));
-	   * if (uh->uh_sum) {
-	   */
 	  if(cksum(m, len + sizeof(struct ip))) {
 	    STAT(udpstat.udps_badsum++);
 	    goto bad;
@@ -201,7 +186,6 @@ udp_input(register struct mbuf *m, int iphlen)
 	  /*
 	   * Setup fields
 	   */
-	  /* udp_last_so = so; */
 	  so->so_laddr = ip->ip_src;
 	  so->so_lport = uh->uh_sport;
@@ -246,7 +230,6 @@ udp_input(register struct mbuf *m, int iphlen)
 	return;
 bad:
 	m_freem(m);
-	/* if (opts) m_freem(opts); */
 	return;
 }
@@ -277,7 +260,7 @@ int udp_output2(struct socket *so, struct mbuf *m,
     memset(&ui->ui_i.ih_mbuf, 0 , sizeof(struct mbuf_ptr));
 	ui->ui_x1 = 0;
 	ui->ui_pr = IPPROTO_UDP;
-	ui->ui_len = htons(m->m_len - sizeof(struct ip)); /* + sizeof (struct udphdr)); */
+	ui->ui_len = htons(m->m_len - sizeof(struct ip));
 	/* XXXXX Check for from-one-location sockets, or from-any-location sockets */
         ui->ui_src = saddr->sin_addr;
 	ui->ui_dst = daddr->sin_addr;
@@ -289,10 +272,8 @@ int udp_output2(struct socket *so, struct mbuf *m,
 	 * Stuff checksum and output datagram.
 	 */
 	ui->ui_sum = 0;
-	if (UDPCKSUM) {
-	    if ((ui->ui_sum = cksum(m, /* sizeof (struct udpiphdr) + */ m->m_len)) == 0)
+	if ((ui->ui_sum = cksum(m, m->m_len)) == 0)
 		ui->ui_sum = 0xffff;
-	}
 	((struct ip *)ui)->ip_len = m->m_len;
 	((struct ip *)ui)->ip_ttl = IPDEFTTL;
@@ -363,8 +344,6 @@ void
 udp_detach(struct socket *so)
 {
 	closesocket(so->s);
-	/* if (so->so_m) m_free(so->so_m);    done by sofree */
-
 	sofree(so);
 }
@@ -651,7 +630,6 @@ udp_listen(u_int32_t haddr, u_int hport, u_int32_t laddr, u_int lport,
 		return NULL;
 	}
 	setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int));
-/*	setsockopt(so->s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); */
 	getsockname(so->s,(struct sockaddr *)&addr,&addrlen);
 	so->so_fport = addr.sin_port;