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m---------slirp0
-rw-r--r--slirp/src/ip_output.c170
2 files changed, 0 insertions, 170 deletions
diff --git a/slirp b/slirp
new file mode 160000
+Subproject 59a1b1f165458c2acb7ff0525b543945f741622
diff --git a/slirp/src/ip_output.c b/slirp/src/ip_output.c
deleted file mode 100644
index 8560197cf6..0000000000
--- a/slirp/src/ip_output.c
+++ /dev/null
@@ -1,170 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause */
-/*
- * Copyright (c) 1982, 1986, 1988, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ip_output.c 8.3 (Berkeley) 1/21/94
- * ip_output.c,v 1.9 1994/11/16 10:17:10 jkh Exp
- */
-
-/*
- * Changes and additions relating to SLiRP are
- * Copyright (c) 1995 Danny Gasparovski.
- */
-
-#include "slirp.h"
-
-/* Number of packets queued before we start sending
- * (to prevent allocing too many mbufs) */
-#define IF_THRESH 10
-
-/*
- * IP output. The packet in mbuf chain m contains a skeletal IP
- * header (with len, off, ttl, proto, tos, src, dst).
- * The mbuf chain containing the packet will be freed.
- * The mbuf opt, if present, will not be freed.
- */
-int
-ip_output(struct socket *so, struct mbuf *m0)
-{
- Slirp *slirp = m0->slirp;
- register struct ip *ip;
- register struct mbuf *m = m0;
- register int hlen = sizeof(struct ip );
- int len, off, error = 0;
-
- DEBUG_CALL("ip_output");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("m0 = %p", m0);
-
- ip = mtod(m, struct ip *);
- /*
- * Fill in IP header.
- */
- ip->ip_v = IPVERSION;
- ip->ip_off &= IP_DF;
- ip->ip_id = htons(slirp->ip_id++);
- ip->ip_hl = hlen >> 2;
-
- /*
- * If small enough for interface, can just send directly.
- */
- if ((uint16_t)ip->ip_len <= IF_MTU) {
- ip->ip_len = htons((uint16_t)ip->ip_len);
- ip->ip_off = htons((uint16_t)ip->ip_off);
- ip->ip_sum = 0;
- ip->ip_sum = cksum(m, hlen);
-
- if_output(so, m);
- goto done;
- }
-
- /*
- * Too large for interface; fragment if possible.
- * Must be able to put at least 8 bytes per fragment.
- */
- if (ip->ip_off & IP_DF) {
- error = -1;
- goto bad;
- }
-
- len = (IF_MTU - hlen) &~ 7; /* ip databytes per packet */
- if (len < 8) {
- error = -1;
- goto bad;
- }
-
- {
- int mhlen, firstlen = len;
- struct mbuf **mnext = &m->m_nextpkt;
-
- /*
- * Loop through length of segment after first fragment,
- * make new header and copy data of each part and link onto chain.
- */
- m0 = m;
- mhlen = sizeof (struct ip);
- for (off = hlen + len; off < (uint16_t)ip->ip_len; off += len) {
- register struct ip *mhip;
- m = m_get(slirp);
- if (m == NULL) {
- error = -1;
- goto sendorfree;
- }
- m->m_data += IF_MAXLINKHDR;
- mhip = mtod(m, struct ip *);
- *mhip = *ip;
-
- m->m_len = mhlen;
- mhip->ip_off = ((off - hlen) >> 3) + (ip->ip_off & ~IP_MF);
- if (ip->ip_off & IP_MF)
- mhip->ip_off |= IP_MF;
- if (off + len >= (uint16_t)ip->ip_len)
- len = (uint16_t)ip->ip_len - off;
- else
- mhip->ip_off |= IP_MF;
- mhip->ip_len = htons((uint16_t)(len + mhlen));
-
- if (m_copy(m, m0, off, len) < 0) {
- error = -1;
- goto sendorfree;
- }
-
- mhip->ip_off = htons((uint16_t)mhip->ip_off);
- mhip->ip_sum = 0;
- mhip->ip_sum = cksum(m, mhlen);
- *mnext = m;
- mnext = &m->m_nextpkt;
- }
- /*
- * Update first fragment by trimming what's been copied out
- * and updating header, then send each fragment (in order).
- */
- m = m0;
- m_adj(m, hlen + firstlen - (uint16_t)ip->ip_len);
- ip->ip_len = htons((uint16_t)m->m_len);
- ip->ip_off = htons((uint16_t)(ip->ip_off | IP_MF));
- ip->ip_sum = 0;
- ip->ip_sum = cksum(m, hlen);
-sendorfree:
- for (m = m0; m; m = m0) {
- m0 = m->m_nextpkt;
- m->m_nextpkt = NULL;
- if (error == 0)
- if_output(so, m);
- else
- m_free(m);
- }
- }
-
-done:
- return (error);
-
-bad:
- m_free(m0);
- goto done;
-}