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Make it possible to use IP_TTL and IP_TOS setsockopt(2) options
on certain types of SOCK_RAW sockets. Also, use the ip.ttl MIB variable instead of MAXTTL constant as the default time-to-live value for outgoing IP packets all over the place, as we already do this for TCP and UDP. Reviewed by: wollman
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@ -32,9 +32,9 @@
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.\" @(#)ip.4 8.2 (Berkeley) 11/30/93
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.\" $FreeBSD$
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.\"
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.Dd November 30, 1993
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.Dd March 3, 2001
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.Dt IP 4
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.Os BSD 4.2
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.Os
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.Sh NAME
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.Nm ip
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.Nd Internet Protocol
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@ -100,9 +100,9 @@ may be used to set the type-of-service and time-to-live
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fields in the
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.Tn IP
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header for
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.Dv SOCK_STREAM
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and
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.Dv SOCK_DGRAM
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.Dv SOCK_STREAM , SOCK_DGRAM ,
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and certain types of
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.Dv SOCK_RAW
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sockets.
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For example,
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.Bd -literal
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@ -355,7 +355,7 @@ setsockopt(s, IPPROTO_IP, IP_HDRINCL, &hincl, sizeof(hincl));
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.Ed
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.Pp
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Unlike previous
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.Tn BSD
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.Bx
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releases, the program must set all
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the fields of the IP header, including the following:
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.Bd -literal
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@ -638,7 +638,7 @@ icmp_reflect(m)
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ia = TAILQ_FIRST(&in_ifaddrhead);
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t = IA_SIN(ia)->sin_addr;
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ip->ip_src = t;
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ip->ip_ttl = MAXTTL;
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ip->ip_ttl = ip_defttl;
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if (optlen > 0) {
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register u_char *cp;
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@ -197,13 +197,13 @@ rip_output(m, so, dst)
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}
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M_PREPEND(m, sizeof(struct ip), M_TRYWAIT);
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ip = mtod(m, struct ip *);
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ip->ip_tos = 0;
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ip->ip_tos = inp->inp_ip_tos;
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ip->ip_off = 0;
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ip->ip_p = inp->inp_ip_p;
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ip->ip_len = m->m_pkthdr.len;
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ip->ip_src = inp->inp_laddr;
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ip->ip_dst.s_addr = dst;
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ip->ip_ttl = MAXTTL;
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ip->ip_ttl = inp->inp_ip_ttl;
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} else {
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if (m->m_pkthdr.len > IP_MAXPACKET) {
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m_freem(m);
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@ -458,6 +458,7 @@ rip_attach(struct socket *so, int proto, struct proc *p)
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inp = (struct inpcb *)so->so_pcb;
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inp->inp_vflag |= INP_IPV4;
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inp->inp_ip_p = proto;
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inp->inp_ip_ttl = ip_defttl;
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#ifdef IPSEC
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error = ipsec_init_policy(so, &inp->inp_sp);
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if (error != 0) {
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