auto import from //branches/cupcake/...@125939

1 files changed, 0 insertions, 322 deletions

diff --git a/slirp/if.c b/slirp/if.c
deleted file mode 100644
index 9d814c2..0000000
--- a/slirp/if.c
+++ /dev/null
@@ -1,322 +0,0 @@
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include <slirp.h>
-
-int if_mtu, if_mru;
-int if_comp;
-int if_maxlinkhdr;
-int     if_queued = 0;                  /* Number of packets queued so far */
-int     if_thresh = 10;                 /* Number of packets queued before we start sending
-					 * (to prevent allocing too many mbufs) */
-
-struct  mbuf if_fastq;                  /* fast queue (for interactive data) */
-struct  mbuf if_batchq;                 /* queue for non-interactive data */
-struct	mbuf *next_m;			/* Pointer to next mbuf to output */
-
-#define ifs_init(ifm) ((ifm)->ifs_next = (ifm)->ifs_prev = (ifm))
-
-void
-ifs_insque(ifm, ifmhead)
-	MBuf ifm, ifmhead;
-{
-	ifm->ifs_next = ifmhead->ifs_next;
-	ifmhead->ifs_next = ifm;
-	ifm->ifs_prev = ifmhead;
-	ifm->ifs_next->ifs_prev = ifm;
-}
-
-void
-ifs_remque(ifm)
-	MBuf ifm;
-{
-	ifm->ifs_prev->ifs_next = ifm->ifs_next;
-	ifm->ifs_next->ifs_prev = ifm->ifs_prev;
-}
-
-void
-if_init()
-{
-#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
-	if_maxlinkhdr = 48;
-#else
-	if_maxlinkhdr = 40;
-#endif
-#else
-        /* 2 for alignment, 14 for ethernet, 40 for TCP/IP */
-        if_maxlinkhdr = 2 + 14 + 40;
-#endif
-	if_mtu = 1500;
-	if_mru = 1500;
-	if_comp = IF_AUTOCOMP;
-	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. 
- * Each output queue is a doubly linked list of double linked lists
- * of mbufs, each list belonging to one "session" (socket).  This
- * way, we can output packets fairly by sending one packet from each
- * session, instead of all the packets from one session, then all packets
- * from the next session, etc.  Packets on the if_fastq get absolute 
- * priority, but if one session hogs the link, it gets "downgraded"
- * to the batchq until it runs out of packets, then it'll return
- * to the fastq (eg. if the user does an ls -alR in a telnet session,
- * it'll temporarily get downgraded to the batchq)
- */
-void
-if_output(so, ifm)
-	struct socket *so;
-	MBuf ifm;
-{
-	MBuf ifq;
-	int on_fastq = 1;
-	
-	DEBUG_CALL("if_output");
-	DEBUG_ARG("so = %lx", (long)so);
-	DEBUG_ARG("ifm = %lx", (long)ifm);
-	
-	/*
-	 * First remove the mbuf from m_usedlist,
-	 * since we're gonna use m_next and m_prev ourselves
-	 * XXX Shouldn't need this, gotta change dtom() etc.
-	 */
-	if (ifm->m_flags & M_USEDLIST) {
-		remque(ifm);
-		ifm->m_flags &= ~M_USEDLIST;
-	}
-	
-	/*
-	 * See if there's already a batchq list for this session.  
-	 * This can include an interactive session, which should go on fastq,
-	 * but gets too greedy... hence it'll be downgraded from fastq to batchq.
-	 * We mustn't put this packet back on the fastq (or we'll send it out of order)
-	 * XXX add cache here?
-	 */
-	for (ifq = if_batchq.ifq_prev; ifq != &if_batchq; ifq = ifq->ifq_prev) {
-		if (so == ifq->ifq_so) {
-			/* A match! */
-			ifm->ifq_so = so;
-			ifs_insque(ifm, ifq->ifs_prev);
-			goto diddit;
-		}
-	}
-	
-	/* No match, check which queue to put it on */
-	if (so && (so->so_iptos & IPTOS_LOWDELAY)) {
-		ifq = if_fastq.ifq_prev;
-		on_fastq = 1;
-		/*
-		 * Check if this packet is a part of the last
-		 * packet's session
-		 */
-		if (ifq->ifq_so == so) {
-			ifm->ifq_so = so;
-			ifs_insque(ifm, ifq->ifs_prev);
-			goto diddit;
-		}
-	} else
-		ifq = if_batchq.ifq_prev;
-	
-	/* Create a new doubly linked list for this session */
-	ifm->ifq_so = so;
-	ifs_init(ifm);
-	insque(ifm, ifq);
-	
-diddit:
-	++if_queued;
-	
-	if (so) {
-		/* Update *_queued */
-		so->so_queued++;
-		so->so_nqueued++;
-		/*
-		 * Check if the interactive session should be downgraded to
-		 * the batchq.  A session is downgraded if it has queued 6
-		 * packets without pausing, and at least 3 of those packets
-		 * have been sent over the link
-		 * (XXX These are arbitrary numbers, probably not optimal..)
-		 */
-		if (on_fastq && ((so->so_nqueued >= 6) && 
-				 (so->so_nqueued - so->so_queued) >= 3)) {
-			
-			/* Remove from current queue... */
-			remque(ifm->ifs_next);
-			
-			/* ...And insert in the new.  That'll teach ya! */
-			insque(ifm->ifs_next, &if_batchq);
-		}
-	}
-
-#ifndef FULL_BOLT
-	/*
-	 * This prevents us from malloc()ing too many mbufs
-	 */
-	if (link_up) {
-		/* if_start will check towrite */
-		if_start();
-	}
-#endif
-}
-
-/*
- * Send a packet
- * We choose a packet based on it's position in the output queues;
- * If there are packets on the fastq, they are sent FIFO, before
- * everything else.  Otherwise we choose the first packet from the
- * batchq and send it.  the next packet chosen will be from the session
- * after this one, then the session after that one, and so on..  So,
- * for example, if there are 3 ftp session's fighting for bandwidth,
- * one packet will be sent from the first session, then one packet
- * from the second session, then one packet from the third, then back
- * to the first, etc. etc.
- */
-void
-if_start(void)
-{
-	MBuf ifm, ifqt;
-	
-	DEBUG_CALL("if_start");
-	
-	if (if_queued == 0)
-	   return; /* Nothing to do */
-	
- again:
-        /* check if we can really output */
-        if (!slirp_can_output())
-            return;
-
-	/*
-	 * See which queue to get next packet from
-	 * If there's something in the fastq, select it immediately
-	 */
-	if (if_fastq.ifq_next != &if_fastq) {
-		ifm = if_fastq.ifq_next;
-	} else {
-		/* Nothing on fastq, see if next_m is valid */
-		if (next_m != &if_batchq)
-		   ifm = next_m;
-		else
-		   ifm = if_batchq.ifq_next;
-		
-		/* Set which packet to send on next iteration */
-		next_m = ifm->ifq_next;
-	}
-	/* Remove it from the queue */
-	ifqt = ifm->ifq_prev;
-	remque(ifm);
-	--if_queued;
-	
-	/* If there are more packets for this session, re-queue them */
-	if (ifm->ifs_next != /* ifm->ifs_prev != */ ifm) {
-		insque(ifm->ifs_next, ifqt);
-		ifs_remque(ifm);
-	}
-	
-	/* Update so_queued */
-	if (ifm->ifq_so) {
-		if (--ifm->ifq_so->so_queued == 0)
-		   /* If there's no more queued, reset nqueued */
-		   ifm->ifq_so->so_nqueued = 0;
-	}
-	
-	/* Encapsulate the packet for sending */
-        if_encap(ifm->m_data, ifm->m_len);
-
-        mbuf_free(ifm);
-
-	if (if_queued)
-	   goto again;
-}