--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 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.h 8.1 (Berkeley) 6/10/93
+ * ip.h,v 1.3 1994/08/21 05:27:30 paul Exp
+ */
+
+#ifndef _IP_H_
+#define _IP_H_
+
+#ifdef HOST_WORDS_BIGENDIAN
+# undef NTOHL
+# undef NTOHS
+# undef HTONL
+# undef HTONS
+# define NTOHL(d)
+# define NTOHS(d)
+# define HTONL(d)
+# define HTONS(d)
+#else
+# ifndef NTOHL
+# define NTOHL(d) ((d) = ntohl((d)))
+# endif
+# ifndef NTOHS
+# define NTOHS(d) ((d) = ntohs((uint16_t)(d)))
+# endif
+# ifndef HTONL
+# define HTONL(d) ((d) = htonl((d)))
+# endif
+# ifndef HTONS
+# define HTONS(d) ((d) = htons((uint16_t)(d)))
+# endif
+#endif
+
+typedef uint32_t n_long; /* long as received from the net */
+
+/*
+ * Definitions for internet protocol version 4.
+ * Per RFC 791, September 1981.
+ */
+#define IPVERSION 4
+
+/*
+ * Structure of an internet header, naked of options.
+ */
+struct ip {
+#ifdef HOST_WORDS_BIGENDIAN
+ uint8_t ip_v:4, /* version */
+ ip_hl:4; /* header length */
+#else
+ uint8_t ip_hl:4, /* header length */
+ ip_v:4; /* version */
+#endif
+ uint8_t ip_tos; /* type of service */
+ uint16_t ip_len; /* total length */
+ uint16_t ip_id; /* identification */
+ uint16_t ip_off; /* fragment offset field */
+#define IP_DF 0x4000 /* don't fragment flag */
+#define IP_MF 0x2000 /* more fragments flag */
+#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
+ uint8_t ip_ttl; /* time to live */
+ uint8_t ip_p; /* protocol */
+ uint16_t ip_sum; /* checksum */
+ struct in_addr ip_src,ip_dst; /* source and dest address */
+} QEMU_PACKED;
+
+#define IP_MAXPACKET 65535 /* maximum packet size */
+
+/*
+ * Definitions for IP type of service (ip_tos)
+ */
+#define IPTOS_LOWDELAY 0x10
+#define IPTOS_THROUGHPUT 0x08
+#define IPTOS_RELIABILITY 0x04
+
+/*
+ * Definitions for options.
+ */
+#define IPOPT_COPIED(o) ((o)&0x80)
+#define IPOPT_CLASS(o) ((o)&0x60)
+#define IPOPT_NUMBER(o) ((o)&0x1f)
+
+#define IPOPT_CONTROL 0x00
+#define IPOPT_RESERVED1 0x20
+#define IPOPT_DEBMEAS 0x40
+#define IPOPT_RESERVED2 0x60
+
+#define IPOPT_EOL 0 /* end of option list */
+#define IPOPT_NOP 1 /* no operation */
+
+#define IPOPT_RR 7 /* record packet route */
+#define IPOPT_TS 68 /* timestamp */
+#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
+#define IPOPT_LSRR 131 /* loose source route */
+#define IPOPT_SATID 136 /* satnet id */
+#define IPOPT_SSRR 137 /* strict source route */
+
+/*
+ * Offsets to fields in options other than EOL and NOP.
+ */
+#define IPOPT_OPTVAL 0 /* option ID */
+#define IPOPT_OLEN 1 /* option length */
+#define IPOPT_OFFSET 2 /* offset within option */
+#define IPOPT_MINOFF 4 /* min value of above */
+
+/*
+ * Time stamp option structure.
+ */
+struct ip_timestamp {
+ uint8_t ipt_code; /* IPOPT_TS */
+ uint8_t ipt_len; /* size of structure (variable) */
+ uint8_t ipt_ptr; /* index of current entry */
+#ifdef HOST_WORDS_BIGENDIAN
+ uint8_t ipt_oflw:4, /* overflow counter */
+ ipt_flg:4; /* flags, see below */
+#else
+ uint8_t ipt_flg:4, /* flags, see below */
+ ipt_oflw:4; /* overflow counter */
+#endif
+ union ipt_timestamp {
+ n_long ipt_time[1];
+ struct ipt_ta {
+ struct in_addr ipt_addr;
+ n_long ipt_time;
+ } ipt_ta[1];
+ } ipt_timestamp;
+} QEMU_PACKED;
+
+/* flag bits for ipt_flg */
+#define IPOPT_TS_TSONLY 0 /* timestamps only */
+#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
+#define IPOPT_TS_PRESPEC 3 /* specified modules only */
+
+/* bits for security (not byte swapped) */
+#define IPOPT_SECUR_UNCLASS 0x0000
+#define IPOPT_SECUR_CONFID 0xf135
+#define IPOPT_SECUR_EFTO 0x789a
+#define IPOPT_SECUR_MMMM 0xbc4d
+#define IPOPT_SECUR_RESTR 0xaf13
+#define IPOPT_SECUR_SECRET 0xd788
+#define IPOPT_SECUR_TOPSECRET 0x6bc5
+
+/*
+ * Internet implementation parameters.
+ */
+#define MAXTTL 255 /* maximum time to live (seconds) */
+#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
+#define IPFRAGTTL 60 /* time to live for frags, slowhz */
+#define IPTTLDEC 1 /* subtracted when forwarding */
+
+#define IP_MSS 576 /* default maximum segment size */
+
+#if SIZEOF_CHAR_P == 4
+struct mbuf_ptr {
+ struct mbuf *mptr;
+ uint32_t dummy;
+} QEMU_PACKED;
+#else
+struct mbuf_ptr {
+ struct mbuf *mptr;
+} QEMU_PACKED;
+#endif
+struct qlink {
+ void *next, *prev;
+};
+
+/*
+ * Overlay for ip header used by other protocols (tcp, udp).
+ */
+struct ipovly {
+ struct mbuf_ptr ih_mbuf; /* backpointer to mbuf */
+ uint8_t ih_x1; /* (unused) */
+ uint8_t ih_pr; /* protocol */
+ uint16_t ih_len; /* protocol length */
+ struct in_addr ih_src; /* source internet address */
+ struct in_addr ih_dst; /* destination internet address */
+} QEMU_PACKED;
+
+/*
+ * Ip reassembly queue structure. Each fragment
+ * being reassembled is attached to one of these structures.
+ * They are timed out after ipq_ttl drops to 0, and may also
+ * be reclaimed if memory becomes tight.
+ * size 28 bytes
+ */
+struct ipq {
+ struct qlink frag_link; /* to ip headers of fragments */
+ struct qlink ip_link; /* to other reass headers */
+ uint8_t ipq_ttl; /* time for reass q to live */
+ uint8_t ipq_p; /* protocol of this fragment */
+ uint16_t ipq_id; /* sequence id for reassembly */
+ struct in_addr ipq_src,ipq_dst;
+} QEMU_PACKED;
+
+/*
+ * Ip header, when holding a fragment.
+ *
+ * Note: ipf_link must be at same offset as frag_link above
+ */
+struct ipasfrag {
+ struct qlink ipf_link;
+ struct ip ipf_ip;
+} QEMU_PACKED;
+
+#define ipf_off ipf_ip.ip_off
+#define ipf_tos ipf_ip.ip_tos
+#define ipf_len ipf_ip.ip_len
+#define ipf_next ipf_link.next
+#define ipf_prev ipf_link.prev
+
+/*
+ * Structure stored in mbuf in inpcb.ip_options
+ * and passed to ip_output when ip options are in use.
+ * The actual length of the options (including ipopt_dst)
+ * is in m_len.
+ */
+#define MAX_IPOPTLEN 40
+
+struct ipoption {
+ struct in_addr ipopt_dst; /* first-hop dst if source routed */
+ int8_t ipopt_list[MAX_IPOPTLEN]; /* options proper */
+} QEMU_PACKED;
+
+#endif
Code Review / kvmfornfv.git / blobdiff