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author | The Android Open Source Project <initial-contribution@android.com> | 2009-01-09 17:51:21 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-01-09 17:51:21 -0800 |
commit | c2db2b6accc7888df514261a7240e7759df95a4c (patch) | |
tree | 0d7ecd37a534c15348cbad01d0d1f84183b7b4d8 /slirp/ip_output.c | |
parent | df7881f07f53b041dc0568be8528e9dbb74994cc (diff) | |
download | external_qemu-c2db2b6accc7888df514261a7240e7759df95a4c.zip external_qemu-c2db2b6accc7888df514261a7240e7759df95a4c.tar.gz external_qemu-c2db2b6accc7888df514261a7240e7759df95a4c.tar.bz2 |
auto import from //branches/cupcake/...@125939
Diffstat (limited to 'slirp/ip_output.c')
-rw-r--r-- | slirp/ip_output.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/slirp/ip_output.c b/slirp/ip_output.c deleted file mode 100644 index 42d789c..0000000 --- a/slirp/ip_output.c +++ /dev/null @@ -1,205 +0,0 @@ -/* - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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. - * - * Please read the file COPYRIGHT for the - * terms and conditions of the copyright. - */ - -#include <slirp.h> - -u_int16_t ip_id; - -/* - * 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(so, m0) - struct socket *so; - MBuf m0; -{ - register struct ip *ip; - register MBuf m = m0; - register int hlen = sizeof(struct ip ); - int len, off, error = 0; - - DEBUG_CALL("ip_output"); - 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 = MBUF_TO(m, struct ip *); - /* - * Fill in IP header. - */ - ip->ip_v = IPVERSION; - ip->ip_off &= IP_DF; - ip->ip_id = htons(ip_id++); - ip->ip_hl = hlen >> 2; - 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) { - ip->ip_len = htons((u_int16_t)ip->ip_len); - ip->ip_off = htons((u_int16_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; - ipstat.ips_cantfrag++; - goto bad; - } - - len = (if_mtu - hlen) &~ 7; /* ip databytes per packet */ - if (len < 8) { - error = -1; - goto bad; - } - - { - int mhlen, firstlen = len; - 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 < (u_int16_t)ip->ip_len; off += len) { - register struct ip *mhip; - m = mbuf_alloc(); - if (m == 0) { - error = -1; - ipstat.ips_odropped++; - goto sendorfree; - } - m->m_data += if_maxlinkhdr; - mhip = MBUF_TO(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) - mhip->ip_off |= IP_MF; - if (off + len >= (u_int16_t)ip->ip_len) - len = (u_int16_t)ip->ip_len - off; - else - mhip->ip_off |= IP_MF; - mhip->ip_len = htons((u_int16_t)(len + mhlen)); - - if (mbuf_copy(m, m0, off, len) < 0) { - error = -1; - goto sendorfree; - } - - mhip->ip_off = htons((u_int16_t)mhip->ip_off); - mhip->ip_sum = 0; - mhip->ip_sum = cksum(m, mhlen); - *mnext = m; - mnext = &m->m_nextpkt; - ipstat.ips_ofragments++; - } - /* - * Update first fragment by trimming what's been copied out - * and updating header, then send each fragment (in order). - */ - m = m0; - mbuf_trim(m, hlen + firstlen - (u_int16_t)ip->ip_len); - ip->ip_len = htons((u_int16_t)m->m_len); - ip->ip_off = htons((u_int16_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 = 0; - if (error == 0) - if_output(so, m); - else - mbuf_free(m); - } - - if (error == 0) - ipstat.ips_fragmented++; - } - -done: - return (error); - -bad: - mbuf_free(m0); - goto done; -} |