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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [netinet/] [raw_ip.c] - Blame information for rev 227

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/*
 * Copyright (c) 1982, 1986, 1988, 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.
 *
 *      @(#)raw_ip.c    8.7 (Berkeley) 5/15/95
 *      $Id: raw_ip.c,v 1.2 2001-09-27 12:01:56 chris Exp $
 */
 
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/socketvar.h>
#include <sys/errno.h>
#include <sys/systm.h>
 
#include <net/if.h>
#include <net/route.h>
 
#define _IP_VHL
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/in_pcb.h>
#include <netinet/in_var.h>
#include <netinet/ip_var.h>
#include <netinet/ip_mroute.h>
 
#include <netinet/ip_fw.h>
 
#if !defined(COMPAT_IPFW) || COMPAT_IPFW == 1
#undef COMPAT_IPFW
#define COMPAT_IPFW 1
#else
#undef COMPAT_IPFW
#endif
 
static struct inpcbhead ripcb;
static struct inpcbinfo ripcbinfo;
 
/*
 * Nominal space allocated to a raw ip socket.
 */
#define RIPSNDQ         8192
#define RIPRCVQ         8192
 
/*
 * Raw interface to IP protocol.
 */
 
/*
 * Initialize raw connection block q.
 */
void
rip_init()
{
        LIST_INIT(&ripcb);
        ripcbinfo.listhead = &ripcb;
        /*
         * XXX We don't use the hash list for raw IP, but it's easier
         * to allocate a one entry hash list than it is to check all
         * over the place for hashbase == NULL.
         */
        ripcbinfo.hashbase = hashinit(1, M_PCB, &ripcbinfo.hashmask);
}
 
static struct   sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET };
/*
 * Setup generic address and protocol structures
 * for raw_input routine, then pass them along with
 * mbuf chain.
 */
void
rip_input(m, iphlen)
        struct mbuf *m;
        int iphlen;
{
        register struct ip *ip = mtod(m, struct ip *);
        register struct inpcb *inp;
        struct inpcb *last = 0;
        struct mbuf *opts = 0;
 
        ripsrc.sin_addr = ip->ip_src;
        for (inp = ripcb.lh_first; inp != NULL; inp = inp->inp_list.le_next) {
                if (inp->inp_ip_p && inp->inp_ip_p != ip->ip_p)
                        continue;
                if (inp->inp_laddr.s_addr &&
                  inp->inp_laddr.s_addr != ip->ip_dst.s_addr)
                        continue;
                if (inp->inp_faddr.s_addr &&
                  inp->inp_faddr.s_addr != ip->ip_src.s_addr)
                        continue;
                if (last) {
                        struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
                        if (n) {
                                if (last->inp_flags & INP_CONTROLOPTS ||
                                    last->inp_socket->so_options & SO_TIMESTAMP)
                                    ip_savecontrol(last, &opts, ip, n);
                                if (sbappendaddr(&last->inp_socket->so_rcv,
                                    (struct sockaddr *)&ripsrc, n,
                                    opts) == 0) {
                                        /* should notify about lost packet */
                                        m_freem(n);
                                        if (opts)
                                            m_freem(opts);
                                } else
                                        sorwakeup(last->inp_socket);
                                opts = 0;
                        }
                }
                last = inp;
        }
        if (last) {
                if (last->inp_flags & INP_CONTROLOPTS ||
                    last->inp_socket->so_options & SO_TIMESTAMP)
                        ip_savecontrol(last, &opts, ip, m);
                if (sbappendaddr(&last->inp_socket->so_rcv,
                    (struct sockaddr *)&ripsrc, m, opts) == 0) {
                        m_freem(m);
                        if (opts)
                            m_freem(opts);
                } else
                        sorwakeup(last->inp_socket);
        } else {
                m_freem(m);
              ipstat.ips_noproto++;
              ipstat.ips_delivered--;
      }
}
 
/*
 * Generate IP header and pass packet to ip_output.
 * Tack on options user may have setup with control call.
 */
int
rip_output(m, so, dst)
        register struct mbuf *m;
        struct socket *so;
        u_long dst;
{
        register struct ip *ip;
        register struct inpcb *inp = sotoinpcb(so);
        int flags = (so->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST;
 
        /*
         * If the user handed us a complete IP packet, use it.
         * Otherwise, allocate an mbuf for a header and fill it in.
         */
        if ((inp->inp_flags & INP_HDRINCL) == 0) {
                if (m->m_pkthdr.len + sizeof(struct ip) > IP_MAXPACKET) {
                        m_freem(m);
                        return(EMSGSIZE);
                }
                M_PREPEND(m, sizeof(struct ip), M_WAIT);
                ip = mtod(m, struct ip *);
                ip->ip_tos = 0;
                ip->ip_off = 0;
                ip->ip_p = inp->inp_ip_p;
                ip->ip_len = m->m_pkthdr.len;
                ip->ip_src = inp->inp_laddr;
                ip->ip_dst.s_addr = dst;
                ip->ip_ttl = MAXTTL;
        } else {
                if (m->m_pkthdr.len > IP_MAXPACKET) {
                        m_freem(m);
                        return(EMSGSIZE);
                }
                ip = mtod(m, struct ip *);
                /* don't allow both user specified and setsockopt options,
                   and don't allow packet length sizes that will crash */
                if (((IP_VHL_HL(ip->ip_vhl) != (sizeof (*ip) >> 2))
                     && inp->inp_options)
                    || (ip->ip_len > m->m_pkthdr.len)
                    || (ip->ip_len < (IP_VHL_HL(ip->ip_vhl) << 2))) {
                        m_freem(m);
                        return EINVAL;
                }
                if (ip->ip_id == 0)
                        ip->ip_id = htons(ip_id++);
                /* XXX prevent ip_output from overwriting header fields */
                flags |= IP_RAWOUTPUT;
                ipstat.ips_rawout++;
        }
        return (ip_output(m, inp->inp_options, &inp->inp_route, flags,
                          inp->inp_moptions));
}
 
/*
 * Raw IP socket option processing.
 */
int
rip_ctloutput(op, so, level, optname, m)
        int op;
        struct socket *so;
        int level, optname;
        struct mbuf **m;
{
        register struct inpcb *inp = sotoinpcb(so);
        register int error;
 
        if (level != IPPROTO_IP) {
                if (op == PRCO_SETOPT && *m)
                        (void)m_free(*m);
                return (EINVAL);
        }
 
        switch (optname) {
 
        case IP_HDRINCL:
                error = 0;
                if (op == PRCO_SETOPT) {
                        if (m == 0 || *m == 0 || (*m)->m_len < sizeof (int))
                                error = EINVAL;
                        else if (*mtod(*m, int *))
                                inp->inp_flags |= INP_HDRINCL;
                        else
                                inp->inp_flags &= ~INP_HDRINCL;
                        if (*m)
                                (void)m_free(*m);
                } else {
                        *m = m_get(M_WAIT, MT_SOOPTS);
                        (*m)->m_len = sizeof (int);
                        *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL;
                }
                return (error);
 
#ifdef COMPAT_IPFW
        case IP_FW_GET:
                if (ip_fw_ctl_ptr == NULL || op == PRCO_SETOPT) {
                        if (*m) (void)m_free(*m);
                        return(EINVAL);
                }
                return (*ip_fw_ctl_ptr)(optname, m);
 
        case IP_FW_ADD:
        case IP_FW_DEL:
        case IP_FW_FLUSH:
        case IP_FW_ZERO:
                if (ip_fw_ctl_ptr == NULL || op != PRCO_SETOPT) {
                        if (*m) (void)m_free(*m);
                        return(EINVAL);
                }
                return (*ip_fw_ctl_ptr)(optname, m);
 
        case IP_NAT:
                if (ip_nat_ctl_ptr == NULL) {
                        if (*m) (void)m_free(*m);
                        return(EINVAL);
                }
                return (*ip_nat_ctl_ptr)(op, m);
 
#endif
        case IP_RSVP_ON:
                return ip_rsvp_init(so);
                break;
 
        case IP_RSVP_OFF:
                return ip_rsvp_done();
                break;
 
        case IP_RSVP_VIF_ON:
                return ip_rsvp_vif_init(so, *m);
 
        case IP_RSVP_VIF_OFF:
                return ip_rsvp_vif_done(so, *m);
 
        case MRT_INIT:
        case MRT_DONE:
        case MRT_ADD_VIF:
        case MRT_DEL_VIF:
        case MRT_ADD_MFC:
        case MRT_DEL_MFC:
        case MRT_VERSION:
        case MRT_ASSERT:
                if (op == PRCO_SETOPT) {
                        error = ip_mrouter_set(optname, so, *m);
                        if (*m)
                                (void)m_free(*m);
                } else if (op == PRCO_GETOPT) {
                        error = ip_mrouter_get(optname, so, m);
                } else
                        error = EINVAL;
                return (error);
        }
        return (ip_ctloutput(op, so, level, optname, m));
}
 
static u_long   rip_sendspace = RIPSNDQ; /* XXX sysctl ? */
static u_long   rip_recvspace = RIPRCVQ; /* XXX sysctl ? */
 
/*ARGSUSED*/
int
rip_usrreq(so, req, m, nam, control)
        register struct socket *so;
        int req;
        struct mbuf *m, *nam, *control;
{
        register int error = 0;
        register struct inpcb *inp = sotoinpcb(so);
        int s;
 
        if (req == PRU_CONTROL)
                return (in_control(so, (u_long)m, (caddr_t)nam,
                        (struct ifnet *)control));
 
        switch (req) {
 
        case PRU_ATTACH:
                if (inp)
                        panic("rip_attach");
                if ((so->so_state & SS_PRIV) == 0) {
                        error = EACCES;
                        break;
                }
                s = splnet();
                error = in_pcballoc(so, &ripcbinfo);
                splx(s);
                if (error)
                        break;
                error = soreserve(so, rip_sendspace, rip_recvspace);
                if (error)
                        break;
                inp = (struct inpcb *)so->so_pcb;
                inp->inp_ip_p = (int)nam;
                break;
 
        case PRU_DISCONNECT:
                if ((so->so_state & SS_ISCONNECTED) == 0) {
                        error = ENOTCONN;
                        break;
                }
                /* FALLTHROUGH */
        case PRU_ABORT:
                soisdisconnected(so);
                /* FALLTHROUGH */
        case PRU_DETACH:
                if (inp == 0)
                        panic("rip_detach");
                if (so == ip_mrouter)
                        ip_mrouter_done();
                ip_rsvp_force_done(so);
                if (so == ip_rsvpd)
                        ip_rsvp_done();
                in_pcbdetach(inp);
                break;
 
        case PRU_BIND:
            {
                struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
 
                if (nam->m_len != sizeof(*addr)) {
                        error = EINVAL;
                        break;
                }
                if ((ifnet == 0) ||
                    ((addr->sin_family != AF_INET) &&
                     (addr->sin_family != AF_IMPLINK)) ||
                    (addr->sin_addr.s_addr &&
                     ifa_ifwithaddr((struct sockaddr *)addr) == 0)) {
                        error = EADDRNOTAVAIL;
                        break;
                }
                inp->inp_laddr = addr->sin_addr;
                break;
            }
        case PRU_CONNECT:
            {
                struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
 
                if (nam->m_len != sizeof(*addr)) {
                        error = EINVAL;
                        break;
                }
                if (ifnet == 0) {
                        error = EADDRNOTAVAIL;
                        break;
                }
                if ((addr->sin_family != AF_INET) &&
                     (addr->sin_family != AF_IMPLINK)) {
                        error = EAFNOSUPPORT;
                        break;
                }
                inp->inp_faddr = addr->sin_addr;
                soisconnected(so);
                break;
            }
 
        case PRU_CONNECT2:
                error = EOPNOTSUPP;
                break;
 
        /*
         * Mark the connection as being incapable of further input.
         */
        case PRU_SHUTDOWN:
                socantsendmore(so);
                break;
 
        /*
         * Ship a packet out.  The appropriate raw output
         * routine handles any massaging necessary.
         */
        case PRU_SEND:
            {
                register u_long dst;
 
                if (so->so_state & SS_ISCONNECTED) {
                        if (nam) {
                                error = EISCONN;
                                break;
                        }
                        dst = inp->inp_faddr.s_addr;
                } else {
                        if (nam == NULL) {
                                error = ENOTCONN;
                                break;
                        }
                        dst = mtod(nam, struct sockaddr_in *)->sin_addr.s_addr;
                }
                error = rip_output(m, so, dst);
                m = NULL;
                break;
            }
 
        case PRU_SENSE:
                /*
                 * stat: don't bother with a blocksize.
                 */
                return (0);
 
        /*
         * Not supported.
         */
        case PRU_RCVOOB:
        case PRU_RCVD:
        case PRU_LISTEN:
        case PRU_ACCEPT:
        case PRU_SENDOOB:
                error = EOPNOTSUPP;
                break;
 
        case PRU_SOCKADDR:
                in_setsockaddr(inp, nam);
                break;
 
        case PRU_PEERADDR:
                in_setpeeraddr(inp, nam);
                break;
 
        default:
                panic("rip_usrreq");
        }
        if (m != NULL)
                m_freem(m);
        return (error);
}

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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [netinet/] [raw_ip.c] - Blame information for rev 227

Line No.	Rev	Author	Line
1	30	unneback	`/*`
2			`* Copyright (c) 1982, 1986, 1988, 1993`
3			`* The Regents of the University of California. All rights reserved.`
4			`*`
5			`* Redistribution and use in source and binary forms, with or without`
6			`* modification, are permitted provided that the following conditions`
7			`* are met:`
8			`* 1. Redistributions of source code must retain the above copyright`
9			`* notice, this list of conditions and the following disclaimer.`
10			`* 2. Redistributions in binary form must reproduce the above copyright`
11			`* notice, this list of conditions and the following disclaimer in the`
12			`* documentation and/or other materials provided with the distribution.`
13			`* 3. All advertising materials mentioning features or use of this software`
14			`* must display the following acknowledgement:`
15			`* This product includes software developed by the University of`
16			`* California, Berkeley and its contributors.`
17			`* 4. Neither the name of the University nor the names of its contributors`
18			`* may be used to endorse or promote products derived from this software`
19			`* without specific prior written permission.`
20			`*`
21			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22			`* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE`
23			`* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE`
24			`* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE`
25			`* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL`
26			`* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS`
27			`* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)`
28			`* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT`
29			`* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY`
30			`* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF`
31			`* SUCH DAMAGE.`
32			`*`
33			`* @(#)raw_ip.c 8.7 (Berkeley) 5/15/95`
34			`* $Id: raw_ip.c,v 1.2 2001-09-27 12:01:56 chris Exp $`
35			`*/`
36
37			`#include <sys/param.h>`
38			`#include <sys/queue.h>`
39			`#include <sys/malloc.h>`
40			`#include <sys/mbuf.h>`
41			`#include <sys/socket.h>`
42			`#include <sys/protosw.h>`
43			`#include <sys/socketvar.h>`
44			`#include <sys/errno.h>`
45			`#include <sys/systm.h>`
46
47			`#include <net/if.h>`
48			`#include <net/route.h>`
49
50			`#define _IP_VHL`
51			`#include <netinet/in.h>`
52			`#include <netinet/in_systm.h>`
53			`#include <netinet/ip.h>`
54			`#include <netinet/in_pcb.h>`
55			`#include <netinet/in_var.h>`
56			`#include <netinet/ip_var.h>`
57			`#include <netinet/ip_mroute.h>`
58
59			`#include <netinet/ip_fw.h>`
60
61			`#if !defined(COMPAT_IPFW) \|\| COMPAT_IPFW == 1`
62			`#undef COMPAT_IPFW`
63			`#define COMPAT_IPFW 1`
64			`#else`
65			`#undef COMPAT_IPFW`
66			`#endif`
67
68			`static struct inpcbhead ripcb;`
69			`static struct inpcbinfo ripcbinfo;`
70
71			`/*`
72			`* Nominal space allocated to a raw ip socket.`
73			`*/`
74			`#define RIPSNDQ 8192`
75			`#define RIPRCVQ 8192`
76
77			`/*`
78			`* Raw interface to IP protocol.`
79			`*/`
80
81			`/*`
82			`* Initialize raw connection block q.`
83			`*/`
84			`void`
85			`rip_init()`
86			`{`
87			`LIST_INIT(&ripcb);`
88			`ripcbinfo.listhead = &ripcb;`
89			`/*`
90			`* XXX We don't use the hash list for raw IP, but it's easier`
91			`* to allocate a one entry hash list than it is to check all`
92			`* over the place for hashbase == NULL.`
93			`*/`
94			`ripcbinfo.hashbase = hashinit(1, M_PCB, &ripcbinfo.hashmask);`
95			`}`
96
97			`static struct sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET };`
98			`/*`
99			`* Setup generic address and protocol structures`
100			`* for raw_input routine, then pass them along with`
101			`* mbuf chain.`
102			`*/`
103			`void`
104			`rip_input(m, iphlen)`
105			`struct mbuf *m;`
106			`int iphlen;`
107			`{`
108			`register struct ip ip = mtod(m, struct ip );`
109			`register struct inpcb *inp;`
110			`struct inpcb *last = 0;`
111			`struct mbuf *opts = 0;`
112
113			`ripsrc.sin_addr = ip->ip_src;`
114			`for (inp = ripcb.lh_first; inp != NULL; inp = inp->inp_list.le_next) {`
115			`if (inp->inp_ip_p && inp->inp_ip_p != ip->ip_p)`
116			`continue;`
117			`if (inp->inp_laddr.s_addr &&`
118			`inp->inp_laddr.s_addr != ip->ip_dst.s_addr)`
119			`continue;`
120			`if (inp->inp_faddr.s_addr &&`
121			`inp->inp_faddr.s_addr != ip->ip_src.s_addr)`
122			`continue;`
123			`if (last) {`
124			`struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);`
125			`if (n) {`
126			`if (last->inp_flags & INP_CONTROLOPTS \|\|`
127			`last->inp_socket->so_options & SO_TIMESTAMP)`
128			`ip_savecontrol(last, &opts, ip, n);`
129			`if (sbappendaddr(&last->inp_socket->so_rcv,`
130			`(struct sockaddr *)&ripsrc, n,`
131			`opts) == 0) {`
132			`/* should notify about lost packet */`
133			`m_freem(n);`
134			`if (opts)`
135			`m_freem(opts);`
136			`} else`
137			`sorwakeup(last->inp_socket);`
138			`opts = 0;`
139			`}`
140			`}`
141			`last = inp;`
142			`}`
143			`if (last) {`
144			`if (last->inp_flags & INP_CONTROLOPTS \|\|`
145			`last->inp_socket->so_options & SO_TIMESTAMP)`
146			`ip_savecontrol(last, &opts, ip, m);`
147			`if (sbappendaddr(&last->inp_socket->so_rcv,`
148			`(struct sockaddr *)&ripsrc, m, opts) == 0) {`
149			`m_freem(m);`
150			`if (opts)`
151			`m_freem(opts);`
152			`} else`
153			`sorwakeup(last->inp_socket);`
154			`} else {`
155			`m_freem(m);`
156			`ipstat.ips_noproto++;`
157			`ipstat.ips_delivered--;`
158			`}`
159			`}`
160
161			`/*`
162			`* Generate IP header and pass packet to ip_output.`
163			`* Tack on options user may have setup with control call.`
164			`*/`
165			`int`
166			`rip_output(m, so, dst)`
167			`register struct mbuf *m;`
168			`struct socket *so;`
169			`u_long dst;`
170			`{`
171			`register struct ip *ip;`
172			`register struct inpcb *inp = sotoinpcb(so);`
173			`int flags = (so->so_options & SO_DONTROUTE) \| IP_ALLOWBROADCAST;`
174
175			`/*`
176			`* If the user handed us a complete IP packet, use it.`
177			`* Otherwise, allocate an mbuf for a header and fill it in.`
178			`*/`
179			`if ((inp->inp_flags & INP_HDRINCL) == 0) {`
180			`if (m->m_pkthdr.len + sizeof(struct ip) > IP_MAXPACKET) {`
181			`m_freem(m);`
182			`return(EMSGSIZE);`
183			`}`
184			`M_PREPEND(m, sizeof(struct ip), M_WAIT);`
185			`ip = mtod(m, struct ip *);`
186			`ip->ip_tos = 0;`
187			`ip->ip_off = 0;`
188			`ip->ip_p = inp->inp_ip_p;`
189			`ip->ip_len = m->m_pkthdr.len;`
190			`ip->ip_src = inp->inp_laddr;`
191			`ip->ip_dst.s_addr = dst;`
192			`ip->ip_ttl = MAXTTL;`
193			`} else {`
194			`if (m->m_pkthdr.len > IP_MAXPACKET) {`
195			`m_freem(m);`
196			`return(EMSGSIZE);`
197			`}`
198			`ip = mtod(m, struct ip *);`
199			`/* don't allow both user specified and setsockopt options,`
200			`and don't allow packet length sizes that will crash */`
201			`if (((IP_VHL_HL(ip->ip_vhl) != (sizeof (*ip) >> 2))`
202			`&& inp->inp_options)`
203			`\|\| (ip->ip_len > m->m_pkthdr.len)`
204			`\|\| (ip->ip_len < (IP_VHL_HL(ip->ip_vhl) << 2))) {`
205			`m_freem(m);`
206			`return EINVAL;`
207			`}`
208			`if (ip->ip_id == 0)`
209			`ip->ip_id = htons(ip_id++);`
210			`/* XXX prevent ip_output from overwriting header fields */`
211			`flags \|= IP_RAWOUTPUT;`
212			`ipstat.ips_rawout++;`
213			`}`
214			`return (ip_output(m, inp->inp_options, &inp->inp_route, flags,`
215			`inp->inp_moptions));`
216			`}`
217
218			`/*`
219			`* Raw IP socket option processing.`
220			`*/`
221			`int`
222			`rip_ctloutput(op, so, level, optname, m)`
223			`int op;`
224			`struct socket *so;`
225			`int level, optname;`
226			`struct mbuf **m;`
227			`{`
228			`register struct inpcb *inp = sotoinpcb(so);`
229			`register int error;`
230
231			`if (level != IPPROTO_IP) {`
232			`if (op == PRCO_SETOPT && *m)`
233			`(void)m_free(*m);`
234			`return (EINVAL);`
235			`}`
236
237			`switch (optname) {`
238
239			`case IP_HDRINCL:`
240			`error = 0;`
241			`if (op == PRCO_SETOPT) {`
242			`if (m == 0 \|\| m == 0 \|\| (m)->m_len < sizeof (int))`
243			`error = EINVAL;`
244			`else if (mtod(m, int *))`
245			`inp->inp_flags \|= INP_HDRINCL;`
246			`else`
247			`inp->inp_flags &= ~INP_HDRINCL;`
248			`if (*m)`
249			`(void)m_free(*m);`
250			`} else {`
251			`*m = m_get(M_WAIT, MT_SOOPTS);`
252			`(*m)->m_len = sizeof (int);`
253			`mtod(m, int *) = inp->inp_flags & INP_HDRINCL;`
254			`}`
255			`return (error);`
256
257			`#ifdef COMPAT_IPFW`
258			`case IP_FW_GET:`
259			`if (ip_fw_ctl_ptr == NULL \|\| op == PRCO_SETOPT) {`
260			`if (m) (void)m_free(m);`
261			`return(EINVAL);`
262			`}`
263			`return (*ip_fw_ctl_ptr)(optname, m);`
264
265			`case IP_FW_ADD:`
266			`case IP_FW_DEL:`
267			`case IP_FW_FLUSH:`
268			`case IP_FW_ZERO:`
269			`if (ip_fw_ctl_ptr == NULL \|\| op != PRCO_SETOPT) {`
270			`if (m) (void)m_free(m);`
271			`return(EINVAL);`
272			`}`
273			`return (*ip_fw_ctl_ptr)(optname, m);`
274
275			`case IP_NAT:`
276			`if (ip_nat_ctl_ptr == NULL) {`
277			`if (m) (void)m_free(m);`
278			`return(EINVAL);`
279			`}`
280			`return (*ip_nat_ctl_ptr)(op, m);`
281
282			`#endif`
283			`case IP_RSVP_ON:`
284			`return ip_rsvp_init(so);`
285			`break;`
286
287			`case IP_RSVP_OFF:`
288			`return ip_rsvp_done();`
289			`break;`
290
291			`case IP_RSVP_VIF_ON:`
292			`return ip_rsvp_vif_init(so, *m);`
293
294			`case IP_RSVP_VIF_OFF:`
295			`return ip_rsvp_vif_done(so, *m);`
296
297			`case MRT_INIT:`
298			`case MRT_DONE:`
299			`case MRT_ADD_VIF:`
300			`case MRT_DEL_VIF:`
301			`case MRT_ADD_MFC:`
302			`case MRT_DEL_MFC:`
303			`case MRT_VERSION:`
304			`case MRT_ASSERT:`
305			`if (op == PRCO_SETOPT) {`
306			`error = ip_mrouter_set(optname, so, *m);`
307			`if (*m)`
308			`(void)m_free(*m);`
309			`} else if (op == PRCO_GETOPT) {`
310			`error = ip_mrouter_get(optname, so, m);`
311			`} else`
312			`error = EINVAL;`
313			`return (error);`
314			`}`
315			`return (ip_ctloutput(op, so, level, optname, m));`
316			`}`
317
318			`static u_long rip_sendspace = RIPSNDQ; /* XXX sysctl ? */`
319			`static u_long rip_recvspace = RIPRCVQ; /* XXX sysctl ? */`
320
321			`/ARGSUSED/`
322			`int`
323			`rip_usrreq(so, req, m, nam, control)`
324			`register struct socket *so;`
325			`int req;`
326			`struct mbuf m, nam, *control;`
327			`{`
328			`register int error = 0;`
329			`register struct inpcb *inp = sotoinpcb(so);`
330			`int s;`
331
332			`if (req == PRU_CONTROL)`
333			`return (in_control(so, (u_long)m, (caddr_t)nam,`
334			`(struct ifnet *)control));`
335
336			`switch (req) {`
337
338			`case PRU_ATTACH:`
339			`if (inp)`
340			`panic("rip_attach");`
341			`if ((so->so_state & SS_PRIV) == 0) {`
342			`error = EACCES;`
343			`break;`
344			`}`
345			`s = splnet();`
346			`error = in_pcballoc(so, &ripcbinfo);`
347			`splx(s);`
348			`if (error)`
349			`break;`
350			`error = soreserve(so, rip_sendspace, rip_recvspace);`
351			`if (error)`
352			`break;`
353			`inp = (struct inpcb *)so->so_pcb;`
354			`inp->inp_ip_p = (int)nam;`
355			`break;`
356
357			`case PRU_DISCONNECT:`
358			`if ((so->so_state & SS_ISCONNECTED) == 0) {`
359			`error = ENOTCONN;`
360			`break;`
361			`}`
362			`/* FALLTHROUGH */`
363			`case PRU_ABORT:`
364			`soisdisconnected(so);`
365			`/* FALLTHROUGH */`
366			`case PRU_DETACH:`
367			`if (inp == 0)`
368			`panic("rip_detach");`
369			`if (so == ip_mrouter)`
370			`ip_mrouter_done();`
371			`ip_rsvp_force_done(so);`
372			`if (so == ip_rsvpd)`
373			`ip_rsvp_done();`
374			`in_pcbdetach(inp);`
375			`break;`
376
377			`case PRU_BIND:`
378			`{`
379			`struct sockaddr_in addr = mtod(nam, struct sockaddr_in );`
380
381			`if (nam->m_len != sizeof(*addr)) {`
382			`error = EINVAL;`
383			`break;`
384			`}`
385			`if ((ifnet == 0) \|\|`
386			`((addr->sin_family != AF_INET) &&`
387			`(addr->sin_family != AF_IMPLINK)) \|\|`
388			`(addr->sin_addr.s_addr &&`
389			`ifa_ifwithaddr((struct sockaddr *)addr) == 0)) {`
390			`error = EADDRNOTAVAIL;`
391			`break;`
392			`}`
393			`inp->inp_laddr = addr->sin_addr;`
394			`break;`
395			`}`
396			`case PRU_CONNECT:`
397			`{`
398			`struct sockaddr_in addr = mtod(nam, struct sockaddr_in );`
399
400			`if (nam->m_len != sizeof(*addr)) {`
401			`error = EINVAL;`
402			`break;`
403			`}`
404			`if (ifnet == 0) {`
405			`error = EADDRNOTAVAIL;`
406			`break;`
407			`}`
408			`if ((addr->sin_family != AF_INET) &&`
409			`(addr->sin_family != AF_IMPLINK)) {`
410			`error = EAFNOSUPPORT;`
411			`break;`
412			`}`
413			`inp->inp_faddr = addr->sin_addr;`
414			`soisconnected(so);`
415			`break;`
416			`}`
417
418			`case PRU_CONNECT2:`
419			`error = EOPNOTSUPP;`
420			`break;`
421
422			`/*`
423			`* Mark the connection as being incapable of further input.`
424			`*/`
425			`case PRU_SHUTDOWN:`
426			`socantsendmore(so);`
427			`break;`
428
429			`/*`
430			`* Ship a packet out. The appropriate raw output`
431			`* routine handles any massaging necessary.`
432			`*/`
433			`case PRU_SEND:`
434			`{`
435			`register u_long dst;`
436
437			`if (so->so_state & SS_ISCONNECTED) {`
438			`if (nam) {`
439			`error = EISCONN;`
440			`break;`
441			`}`
442			`dst = inp->inp_faddr.s_addr;`
443			`} else {`
444			`if (nam == NULL) {`
445			`error = ENOTCONN;`
446			`break;`
447			`}`
448			`dst = mtod(nam, struct sockaddr_in *)->sin_addr.s_addr;`
449			`}`
450			`error = rip_output(m, so, dst);`
451			`m = NULL;`
452			`break;`
453			`}`
454
455			`case PRU_SENSE:`
456			`/*`
457			`* stat: don't bother with a blocksize.`
458			`*/`
459			`return (0);`
460
461			`/*`
462			`* Not supported.`
463			`*/`
464			`case PRU_RCVOOB:`
465			`case PRU_RCVD:`
466			`case PRU_LISTEN:`
467			`case PRU_ACCEPT:`
468			`case PRU_SENDOOB:`
469			`error = EOPNOTSUPP;`
470			`break;`
471
472			`case PRU_SOCKADDR:`
473			`in_setsockaddr(inp, nam);`
474			`break;`
475
476			`case PRU_PEERADDR:`
477			`in_setpeeraddr(inp, nam);`
478			`break;`
479
480			`default:`
481			`panic("rip_usrreq");`
482			`}`
483			`if (m != NULL)`
484			`m_freem(m);`
485			`return (error);`
486			`}`