Merge new routed from vendor branch.

This commit is contained in:
wollman 1996-08-27 16:22:05 +00:00
parent d3bff4e978
commit 9b19e561e3
11 changed files with 359 additions and 208 deletions

View File

@ -1,8 +1,10 @@
# @(#)Makefile 8.1 (Berkeley) 6/19/93
# From: @(#)Makefile 8.1 (Berkeley) 6/19/93
# $Id$
PROG= routed
SRCS= if.c input.c main.c output.c parms.c radix.c rdisc.c table.c trace.c
MAN8= routed.8
SUBDIR= rtquery
#COPTS= -g -DDEBUG -Wall
.include <bsd.prog.mk>

View File

@ -31,9 +31,13 @@
* SUCH DAMAGE.
*
* @(#)defs.h 8.1 (Berkeley) 6/5/93
* $Id$
* $Id: defs.h,v 1.4 1996/07/22 21:12:14 wollman Exp $
*/
#ifndef __NetBSD__
#ident "$Revision: 1.1.3.3 $"
#endif
/* Definitions for RIPv2 routing process.
*
* This code is based on the 4.4BSD `routed` daemon, with extensions to
@ -77,18 +81,20 @@
#include <sys/ioctl.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#ifdef sgi
#include <net/radix.h>
#else
#include "radix.h"
#endif
#include <net/if.h>
#include <net/route.h>
#include <net/radix.h>
#ifndef sgi
struct walkarg;
#endif
#include <net/if_dl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define RIPVERSION RIPv2
#include <protocols/routed.h>
/* Type of an IP address.
* Some systems do not like to pass structures, so do not use in_addr.
* Some systems think a long has 64 bits, which would be a gross waste.
@ -98,7 +104,11 @@ struct walkarg;
#ifdef sgi
#define naddr __uint32_t
#else
#ifdef __NetBSD__
#define naddr u_int32_t
#else
#define naddr u_long
#endif
#define _HAVE_SA_LEN
#define _HAVE_SIN_LEN
#endif
@ -147,6 +157,12 @@ union pkt_buf {
};
/* no more routes than this, to protect ourself in case something goes
* whacko and starts broadcast zillions of bogus routes.
*/
#define MAX_ROUTES (128*1024)
extern int total_routes;
/* Main, daemon routing table structure
*/
struct rt_entry {
@ -448,15 +464,10 @@ extern void logbad(int, char *, ...);
#else
#define DBGERR(dump,msg) LOGERR(msg)
#endif
#ifdef MCAST_PPP_BUG
extern void mcasterr(struct interface *, int, char *);
#define MCASTERR(ifp,dump,msg) mcasterr(ifp, dump, "setsockopt(IP_"msg")")
#else
#define MCASTERR(ifp, dump,msg) DBGERR(dump,"setsockopt(IP_" msg ")")
#endif
extern char *naddr_ntoa(naddr);
extern char *saddr_ntoa(struct sockaddr *);
extern void *rtmalloc(size_t, char *);
extern void timevaladd(struct timeval *, struct timeval *);
extern void intvl_random(struct timeval *, u_long, u_long);
extern int getnet(char *, naddr *, naddr *);
@ -538,9 +549,6 @@ extern naddr ripv1_mask_net(naddr, struct interface *);
extern naddr ripv1_mask_host(naddr,struct interface *);
#define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0)
extern int check_dst(naddr);
#ifdef sgi
extern int sysctl(int *, u_int, void *, size_t *, void *, size_t);
#endif
extern void addrouteforif(register struct interface *);
extern void ifinit(void);
extern int walk_bad(struct radix_node *, struct walkarg *);

View File

@ -31,9 +31,12 @@
* SUCH DAMAGE.
*/
#if !defined(lint) && !defined(sgi)
#if !defined(lint) && !defined(sgi) && !defined(__NetBSD__)
static char sccsid[] = "@(#)if.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
#elif defined(__NetBSD__)
static char rcsid[] = "$NetBSD$";
#endif
#ident "$Revision: 1.1.3.3 $"
#include "defs.h"
#include "pathnames.h"
@ -60,10 +63,7 @@ ifwithaddr(naddr addr,
struct interface *ifp, *possible = 0;
for (ifp = ifnet; ifp; ifp = ifp->int_next) {
if ((ifp->int_addr == addr
&& !(ifp->int_if_flags & IFF_POINTOPOINT))
|| (ifp->int_dstaddr == addr
&& (ifp->int_if_flags & IFF_POINTOPOINT))
if (ifp->int_addr == addr
|| ((ifp->int_if_flags & IFF_BROADCAST)
&& ifp->int_brdaddr == addr
&& bcast)) {
@ -169,7 +169,7 @@ std_mask(naddr addr) /* in network order */
}
/* Find The netmask that would be inferred by RIPv1 listeners
/* Find the netmask that would be inferred by RIPv1 listeners
* on the given interface for a given network.
* If no interface is specified, look for the best fitting interface.
*/
@ -451,14 +451,15 @@ ifinit(void)
static size_t sysctl_buf_size = 0;
uint complaints = 0;
static u_int prev_complaints = 0;
# define COMP_NOT_INET 0x01
# define COMP_WIERD 0x02
# define COMP_NOADDR 0x04
# define COMP_NODST 0x08
# define COMP_NOBADR 0x10
# define COMP_NOMASK 0x20
# define COMP_DUP 0x40
# define COMP_BAD_METRIC 0x80
# define COMP_NOT_INET 0x001
# define COMP_WIERD 0x002
# define COMP_NOADDR 0x004
# define COMP_NODST 0x008
# define COMP_NOBADR 0x010
# define COMP_NOMASK 0x020
# define COMP_DUP 0x040
# define COMP_BAD_METRIC 0x080
# define COMP_NETMASK 0x100
struct interface ifs, ifs0, *ifp, *ifp1;
struct rt_entry *rt;
@ -496,7 +497,6 @@ ifinit(void)
if ((needed = sysctl_buf_size) != 0) {
if (sysctl(mib, 6, sysctl_buf,&needed, 0, 0) >= 0)
break;
if (errno != ENOMEM && errno != EFAULT)
BADERR(1, "ifinit: get interface table");
free(sysctl_buf);
@ -504,8 +504,7 @@ ifinit(void)
}
if (sysctl(mib, 6, 0, &needed, 0, 0) < 0)
BADERR(1,"ifinit: route-sysctl-estimate");
if ((sysctl_buf = malloc(sysctl_buf_size = needed)) == 0)
BADERR(1,"ifinit: malloc");
sysctl_buf = rtmalloc(sysctl_buf_size = needed, "ifinit");
}
ifam_lim = (struct ifa_msghdr *)(sysctl_buf + needed);
@ -538,7 +537,7 @@ ifinit(void)
continue;
}
if (ifam->ifam_type != RTM_NEWADDR) {
DBGERR(1,"ifinit: out of sync");
logbad(1,"ifinit: out of sync");
continue;
}
@ -703,6 +702,9 @@ ifinit(void)
}
if (ifp != 0) {
/* The primary representative of an alias worries
* about how things are working.
*/
if (ifp->int_state & IS_ALIAS)
continue;
@ -848,9 +850,7 @@ ifinit(void)
/* Add it to the list of interfaces
*/
ifp = (struct interface *)malloc(sizeof(*ifp));
if (ifp == 0)
BADERR(1,"ifinit: out of memory");
ifp = (struct interface *)rtmalloc(sizeof(*ifp), "ifinit");
bcopy(&ifs, ifp, sizeof(*ifp));
if (ifnet != 0) {
ifp->int_next = ifnet;
@ -859,6 +859,32 @@ ifinit(void)
ifnet = ifp;
trace_if("Add", ifp);
/* Notice likely bad netmask.
*/
if (!(prev_complaints & COMP_NETMASK)
&& !(ifp->int_if_flags & IFF_POINTOPOINT)) {
for (ifp1 = ifnet; 0 != ifp1; ifp1 = ifp1->int_next) {
if (ifp1->int_mask == ifp->int_mask)
continue;
if (ifp1->int_if_flags & IFF_POINTOPOINT)
continue;
if (on_net(ifp->int_addr,
ifp1->int_net, ifp1->int_mask)
|| on_net(ifp1->int_addr,
ifp->int_net, ifp->int_mask)) {
msglog("possible netmask problem"
" betwen %s:%s and %s:%s",
ifp->int_name,
addrname(htonl(ifp->int_net),
ifp->int_mask, 1),
ifp1->int_name,
addrname(htonl(ifp1->int_net),
ifp1->int_mask, 1));
complaints |= COMP_NETMASK;
}
}
}
/* Count the # of directly connected networks.
*/
if (!(ifp->int_state & IS_ALIAS)) {

View File

@ -31,13 +31,12 @@
* SUCH DAMAGE.
*/
#if !defined(lint) && !defined(sgi)
/*
#if !defined(lint) && !defined(sgi) && !defined(__NetBSD__)
static char sccsid[] = "@(#)input.c 8.1 (Berkeley) 6/5/93";
*/
static const char rcsid[] =
"$Id$";
#endif /* not lint */
#elif defined(__NetBSD__)
static char rcsid[] = "$NetBSD$";
#endif
#ident "$Revision: 1.1.3.3 $"
#include "defs.h"
@ -203,10 +202,14 @@ input(struct sockaddr_in *from, /* received from this IP address */
&& n == rip->rip_nets
&& n+1 == lim) {
if (from->sin_port != htons(RIP_PORT)) {
/* query */
/* query from `rtquery` or similar
*/
supply(from, ifp,
OUT_QUERY, 0, rip->rip_vers);
} else if (supplier) {
/* a router trying to prime its
* tables.
*/
supply(from, ifp,
OUT_UNICAST, 0, rip->rip_vers);
}
@ -236,34 +239,35 @@ input(struct sockaddr_in *from, /* received from this IP address */
}
if (rip->rip_vers == RIPv1
|| 0 == (mask = ntohl(n->n_mask)))
|| 0 == (mask = ntohl(n->n_mask))
|| 0 != (ntohl(dst) & ~mask))
mask = ripv1_mask_host(dst,ifp);
rt = rtget(dst, mask);
if (!rt)
if (!rt && dst != RIP_DEFAULT)
rt = rtfind(n->n_dst);
n->n_tag = 0;
n->n_nhop = 0;
if (!rt) {
if (rip->rip_vers == RIPv1) {
n->n_mask = 0;
} else {
n->n_mask = mask;
}
if (rt == 0) {
n->n_metric = HOPCNT_INFINITY;
} else {
n->n_metric = rt->rt_metric+1;
if (ifp != 0)
n->n_metric += ifp->int_metric;
n->n_metric += (ifp!=0) ? ifp->int_metric : 1;
if (n->n_metric > HOPCNT_INFINITY)
n->n_metric = HOPCNT_INFINITY;
if (rip->rip_vers == RIPv1) {
n->n_mask = 0;
} else {
if (rip->rip_vers != RIPv1) {
n->n_tag = rt->rt_tag;
if (!ifp
|| !on_net(rt->rt_gate,
if (ifp != 0
&& on_net(rt->rt_gate,
ifp->int_net,
ifp->int_mask)
|| rt->rt_gate != ifp->int_addr)
n->n_nhop = 0;
else
&& rt->rt_gate != ifp->int_addr)
n->n_nhop = rt->rt_gate;
}
}
@ -301,7 +305,7 @@ input(struct sockaddr_in *from, /* received from this IP address */
}
if (rip->rip_cmd == RIPCMD_TRACEON) {
rip->rip_tracefile[size-4] = '\0';
trace_on(rip->rip_tracefile, 0);
trace_on((char*)rip->rip_tracefile, 0);
} else {
trace_off("tracing turned off by %s\n",
naddr_ntoa(FROM_NADDR));
@ -387,20 +391,27 @@ input(struct sockaddr_in *from, /* received from this IP address */
return;
}
/* Authenticate the packet.
/* Authenticate the packet if we have a secret.
*/
if (ifp->int_passwd[0] != '\0'
&& (n >= lim
|| n->n_family != RIP_AF_AUTH
|| ((struct netauth*)n)->a_type != RIP_AUTH_PW
|| 0 != bcmp(((struct netauth*)n)->au.au_pw,
ifp->int_passwd,
sizeof(ifp->int_passwd)))) {
if (from->sin_addr.s_addr != use_auth)
msglog("missing authentication from %s",
naddr_ntoa(FROM_NADDR));
use_auth = from->sin_addr.s_addr;
return;
if (ifp->int_passwd[0] != '\0') {
if (n >= lim
|| n->n_family != RIP_AF_AUTH
|| ((struct netauth*)n)->a_type != RIP_AUTH_PW) {
if (from->sin_addr.s_addr != use_auth)
msglog("missing password from %s",
naddr_ntoa(FROM_NADDR));
use_auth = from->sin_addr.s_addr;
return;
} else if (0 != bcmp(((struct netauth*)n)->au.au_pw,
ifp->int_passwd,
sizeof(ifp->int_passwd))) {
if (from->sin_addr.s_addr != use_auth)
msglog("bad password from %s",
naddr_ntoa(FROM_NADDR));
use_auth = from->sin_addr.s_addr;
return;
}
}
for (; n < lim; n++) {
@ -527,15 +538,16 @@ input(struct sockaddr_in *from, /* received from this IP address */
|| !(rt->rt_state & RS_NET_SYN)))) {
ddst_h = v1_mask & -v1_mask;
i = (v1_mask & ~mask)/ddst_h;
if (i >= 1024) {
if (i >= 511) {
/* Punt if we would have to generate
* an unreasonable number of routes.
*/
#ifdef DEBUG
msglog("accept %s from %s as-is"
" instead of as %d routes",
msglog("accept %s from %s as 1"
" instead of %d routes",
addrname(dst,mask,0),
naddr_ntoa(FROM_NADDR), i);
naddr_ntoa(FROM_NADDR),
i+1);
#endif
i = 0;
} else {
@ -598,7 +610,9 @@ input_route(struct interface *ifp,
if (n->n_metric == HOPCNT_INFINITY)
return;
rtadd(dst, mask, gate, from, n->n_metric, n->n_tag, 0, ifp);
if (total_routes < MAX_ROUTES)
rtadd(dst, mask, gate, from, n->n_metric,
n->n_tag, 0, ifp);
return;
}
@ -639,11 +653,12 @@ input_route(struct interface *ifp,
*/
int old_metric = rts->rts_metric;
/* Keep poisoned routes around only long
* enough to pass the poison on.
/* Keep poisoned routes around only long enough to pass
* the poison on. Get a new timestamp for good routes.
*/
if (old_metric < HOPCNT_INFINITY)
new_time = now.tv_sec;
new_time =((old_metric == HOPCNT_INFINITY)
? rts->rts_time
: now.tv_sec);
/* If this is an update for the router we currently prefer,
* then note it.

View File

@ -34,9 +34,12 @@
char copyright[] =
"@(#) Copyright (c) 1983, 1988, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#if !defined(lint) && !defined(sgi)
#if !defined(lint) && !defined(sgi) && !defined(__NetBSD__)
static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
#elif defined(__NetBSD__)
static char rcsid[] = "$NetBSD$";
#endif
#ident "$Revision: 1.1.3.3 $"
#include "defs.h"
#include "pathnames.h"
@ -272,14 +275,7 @@ main(int argc,
if (setsockopt(rt_sock, SOL_SOCKET,SO_USELOOPBACK,
&off,sizeof(off)) < 0)
LOGERR("setsockopt(SO_USELOOPBACK,0)");
/* prepare Router Discovery socket.
*/
rdisc_sock = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
if (rdisc_sock < 0)
BADERR(1,"rdisc_sock = socket()");
fix_sock(rdisc_sock,"rdisc_sock");
fix_select();
@ -733,6 +729,19 @@ rip_on(struct interface *ifp)
}
/* die if malloc(3) fails
*/
void *
rtmalloc(size_t size,
char *msg)
{
void *p = malloc(size);
if (p == 0)
logbad(1,"malloc() failed in %s", msg);
return p;
}
/* get a random instant in an interval
*/
void

View File

@ -31,9 +31,12 @@
* SUCH DAMAGE.
*/
#if !defined(lint) && !defined(sgi)
#if !defined(lint) && !defined(sgi) && !defined(__NetBSD__)
static char sccsid[] = "@(#)output.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
#elif defined(__NetBSD__)
static char rcsid[] = "$NetBSD$";
#endif
#ident "$Revision: 1.1.3.3 $"
#include "defs.h"
@ -59,6 +62,7 @@ struct {
} v12, v2;
char metric; /* adjust metrics by interface */
int npackets;
int gen_limit;
u_int state;
#define WS_ST_FLASH 0x001 /* send only changed routes */
#define WS_ST_RIP2_SAFE 0x002 /* send RIPv2 safe for RIPv1 */
@ -168,6 +172,10 @@ output(enum output_type type,
}
sin.sin_addr.s_addr = htonl(INADDR_RIP_GROUP);
}
case NO_OUT_MULTICAST:
case NO_OUT_RIPV2:
break;
}
trace_rip(msg, "to", &sin, ifp, buf, size);
@ -295,20 +303,22 @@ supply_out(struct ag_info *ag)
ddst_h = v1_mask & -v1_mask;
i = (v1_mask & ~mask)/ddst_h;
if (i >= 1024) {
if (i > ws.gen_limit) {
/* Punt if we would have to generate an
* unreasonable number of routes.
*/
#ifdef DEBUG
msglog("sending %s to %s as-is instead"
" of as %d routes",
addrname(htonl(dst_h),mask,0),
naddr_ntoa(ws.to.sin_addr.s_addr), i);
msglog("sending %s to %s as 1 instead"
" of %d routes",
addrname(htonl(dst_h),mask,1),
naddr_ntoa(ws.to.sin_addr.s_addr),
i+1);
#endif
i = 0;
} else {
mask = v1_mask;
ws.gen_limit -= i;
}
}
}
@ -537,6 +547,7 @@ supply(struct sockaddr_in *dst,
ws.state = 0;
ws.gen_limit = 1024;
ws.to = *dst;
ws.to_std_mask = std_mask(ws.to.sin_addr.s_addr);

View File

@ -31,6 +31,8 @@
* SUCH DAMAGE.
*
* @(#)pathnames.h 8.1 (Berkeley) 6/5/93
*
* $NetBSD$
*/
#include <paths.h>

View File

@ -31,10 +31,12 @@
* SUCH DAMAGE.
*/
#if !defined(lint) && !defined(sgi)
static const char rcsid[] =
"$Id: rdisc.c,v 1.2 1996/06/15 17:10:27 wollman Exp $";
#endif /* not lint */
#if !defined(lint) && !defined(sgi) && !defined(__NetBSD__)
static char sccsid[] = "@(#)rdisc.c 8.1 (Berkeley) x/y/95";
#elif defined(__NetBSD__)
static char rcsid[] = "$NetBSD$";
#endif
#ident "$Revision: 1.1.3.3 $"
#include "defs.h"
#include <netinet/in_systm.h>
@ -43,12 +45,12 @@ static const char rcsid[] =
/* router advertisement ICMP packet */
struct icmp_ad {
u_char icmp_type; /* type of message */
u_char icmp_code; /* type sub code */
u_short icmp_cksum; /* ones complement cksum of struct */
u_char icmp_ad_num; /* # of following router addresses */
u_char icmp_ad_asize; /* 2--words in each advertisement */
u_short icmp_ad_life; /* seconds of validity */
u_int8_t icmp_type; /* type of message */
u_int8_t icmp_code; /* type sub code */
u_int16_t icmp_cksum; /* ones complement cksum of struct */
u_int8_t icmp_ad_num; /* # of following router addresses */
u_int8_t icmp_ad_asize; /* 2--words in each advertisement */
u_int16_t icmp_ad_life; /* seconds of validity */
struct icmp_ad_info {
n_long icmp_ad_addr;
n_long icmp_ad_pref;
@ -57,10 +59,10 @@ struct icmp_ad {
/* router solicitation ICMP packet */
struct icmp_so {
u_char icmp_type; /* type of message */
u_char icmp_code; /* type sub code */
u_short icmp_cksum; /* ones complement cksum of struct */
n_long icmp_so_rsvd;
u_int8_t icmp_type; /* type of message */
u_int8_t icmp_code; /* type sub code */
u_int16_t icmp_cksum; /* ones complement cksum of struct */
n_long icmp_so_rsvd;
};
union ad_u {
@ -126,7 +128,7 @@ trace_rdisc(char *act,
lim = &wp[(len - sizeof(p->ad)) / sizeof(*wp)];
for (i = 0; i < p->ad.icmp_ad_num && wp <= lim; i++) {
(void)fprintf(ftrace, "\t%s preference=%#x",
naddr_ntoa(wp[0]), ntohl(wp[1]));
naddr_ntoa(wp[0]), (int)ntohl(wp[1]));
wp += p->ad.icmp_ad_asize;
}
(void)fputc('\n',ftrace);
@ -140,6 +142,20 @@ trace_rdisc(char *act,
}
}
/* prepare Router Discovery socket.
*/
static void
get_rdisc_sock(void)
{
if (rdisc_sock < 0) {
rdisc_sock = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
if (rdisc_sock < 0)
BADERR(1,"rdisc_sock = socket()");
fix_sock(rdisc_sock,"rdisc_sock");
fix_select();
}
}
/* Pick multicast group for router-discovery socket
*/
@ -148,8 +164,17 @@ set_rdisc_mg(struct interface *ifp,
int on) { /* 0=turn it off */
struct ip_mreq m;
if (rdisc_sock == -1
|| !(ifp->int_if_flags & IFF_MULTICAST)
if (rdisc_sock < 0) {
/* Create the raw socket so that we can hear at least
* broadcast router discovery packets.
*/
if ((ifp->int_state & IS_NO_RDISC) == IS_NO_RDISC
|| !on)
return;
get_rdisc_sock();
}
if (!(ifp->int_if_flags & IFF_MULTICAST)
|| (ifp->int_state & IS_ALIAS)) {
ifp->int_state &= ~(IS_ALL_HOSTS | IS_ALL_ROUTERS);
return;
@ -166,7 +191,8 @@ set_rdisc_mg(struct interface *ifp,
if (supplier
|| (ifp->int_state & IS_NO_ADV_IN)
|| !on) {
/* stop listening to advertisements */
/* stop listening to advertisements
*/
if (ifp->int_state & IS_ALL_HOSTS) {
m.imr_multiaddr.s_addr = htonl(INADDR_ALLHOSTS_GROUP);
if (setsockopt(rdisc_sock, IPPROTO_IP,
@ -177,7 +203,8 @@ set_rdisc_mg(struct interface *ifp,
}
} else if (!(ifp->int_state & IS_ALL_HOSTS)) {
/* start listening to advertisements */
/* start listening to advertisements
*/
m.imr_multiaddr.s_addr = htonl(INADDR_ALLHOSTS_GROUP);
if (setsockopt(rdisc_sock, IPPROTO_IP, IP_ADD_MEMBERSHIP,
&m, sizeof(m)) < 0) {
@ -190,7 +217,8 @@ set_rdisc_mg(struct interface *ifp,
if (!supplier
|| (ifp->int_state & IS_NO_ADV_OUT)
|| !on) {
/* stop listening to solicitations */
/* stop listening to solicitations
*/
if (ifp->int_state & IS_ALL_ROUTERS) {
m.imr_multiaddr.s_addr=htonl(INADDR_ALLROUTERS_GROUP);
if (setsockopt(rdisc_sock, IPPROTO_IP,
@ -201,7 +229,8 @@ set_rdisc_mg(struct interface *ifp,
}
} else if (!(ifp->int_state & IS_ALL_ROUTERS)) {
/* start hearing solicitations */
/* start hearing solicitations
*/
m.imr_multiaddr.s_addr=htonl(INADDR_ALLROUTERS_GROUP);
if (setsockopt(rdisc_sock, IPPROTO_IP, IP_ADD_MEMBERSHIP,
&m, sizeof(m)) < 0) {
@ -540,12 +569,12 @@ parse_ad(naddr from,
/* ignore pointers to ourself and routes via unreachable networks
*/
if (ifwithaddr(gate, 1, 0) != 0) {
trace_pkt("\tdiscard our own Router Discovery Ad\n");
trace_pkt("\tdiscard Router Discovery Ad pointing at us\n");
return;
}
if (!on_net(gate, ifp->int_net, ifp->int_mask)) {
trace_pkt("\tdiscard Router Discovery Ad"
" from unreachable net\n");
" toward unreachable net\n");
return;
}
@ -553,7 +582,7 @@ parse_ad(naddr from,
* and later bias it by the metric of the interface.
*/
pref = ntohl(pref) ^ MIN_PreferenceLevel;
if (pref == 0 || life == 0) {
pref = 0;
life = 0;
@ -656,6 +685,10 @@ send_rdisc(union ad_u *p,
bzero(&sin, sizeof(sin));
sin.sin_addr.s_addr = dst;
sin.sin_family = AF_INET;
#ifdef _HAVE_SIN_LEN
sin.sin_len = sizeof(sin);
#endif
flags = MSG_DONTROUTE;
switch (type) {
@ -710,6 +743,9 @@ send_rdisc(union ad_u *p,
break;
}
if (rdisc_sock < 0)
get_rdisc_sock();
trace_rdisc(msg, ifp->int_addr, sin.sin_addr.s_addr, ifp,
p, p_size);

View File

@ -1,6 +1,8 @@
# @(#)Makefile 8.1 (Berkeley) 6/5/93
# From: @(#)Makefile 8.1 (Berkeley) 6/5/93
# $Id$
PROG= rtquery
MAN8= rtquery.8
#COPTS= -g -DDEBUG -Wall
.include <bsd.prog.mk>

View File

@ -31,9 +31,12 @@
* SUCH DAMAGE.
*/
#if !defined(lint) && !defined(sgi)
#if !defined(lint) && !defined(sgi) && !defined(__NetBSD__)
static char sccsid[] = "@(#)tables.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
#elif defined(__NetBSD__)
static char rcsid[] = "$NetBSD$";
#endif
#ident "$Revision: 1.1.3.3 $"
#include "defs.h"
@ -52,6 +55,8 @@ struct timeval need_kern = { /* need to update kernel table */
int stopint;
int total_routes;
naddr age_bad_gate;
@ -724,12 +729,12 @@ static struct khash {
u_short k_state;
#define KS_NEW 0x001
#define KS_DELETE 0x002
#define KS_ADD 0x004
#define KS_CHANGE 0x008
#define KS_DEL_ADD 0x010
#define KS_STATIC 0x020
#define KS_GATEWAY 0x040
#define KS_DYNAMIC 0x080
#define KS_ADD 0x004 /* add to the kernel */
#define KS_CHANGE 0x008 /* tell kernel to change the route */
#define KS_DEL_ADD 0x010 /* delete & add to change the kernel */
#define KS_STATIC 0x020 /* Static flag in kernel */
#define KS_GATEWAY 0x040 /* G flag in kernel */
#define KS_DYNAMIC 0x080 /* result of redirect */
#define KS_DELETED 0x100 /* already deleted */
time_t k_keep;
#define K_KEEP_LIM 30
@ -767,7 +772,6 @@ kern_add(naddr dst, naddr mask)
k->k_dst = dst;
k->k_mask = mask;
k->k_state = KS_NEW;
k->k_redirect_time = now.tv_sec;
k->k_keep = now.tv_sec;
*pk = k;
@ -775,8 +779,8 @@ kern_add(naddr dst, naddr mask)
}
/* If it has a non-zero metric, check that it is still in the table, not
* having been deleted by interfaces coming and going.
/* If a kernel route has a non-zero metric, check that it is still in the
* daemon table, and not deleted by interfaces coming and going.
*/
static void
kern_check_static(struct khash *k,
@ -846,22 +850,25 @@ rtm_add(struct rt_msghdr *rtm,
k->k_state |= KS_GATEWAY;
if (rtm->rtm_flags & RTF_STATIC)
k->k_state |= KS_STATIC;
if (rtm->rtm_flags & RTF_DYNAMIC) {
k->k_state |= KS_DYNAMIC;
k->k_redirect_time = now.tv_sec;
/* Routers are not supposed to listen to redirects,
* so delete it.
*/
if (0 != (rtm->rtm_flags & (RTF_DYNAMIC | RTF_MODIFIED))) {
if (supplier) {
k->k_keep = now.tv_sec;
/* Routers are not supposed to listen to redirects,
* so delete it.
*/
k->k_state &= ~KS_DYNAMIC;
k->k_state |= KS_DELETE;
trace_act("mark redirected %s --> %s for deletion"
"since this is a router\n",
" since this is a router\n",
addrname(k->k_dst, k->k_mask, 0),
naddr_ntoa(k->k_gate));
} else {
k->k_state |= KS_DYNAMIC;
k->k_redirect_time = now.tv_sec;
}
}
/* If it is not a static route, quite until it is time to delete it.
/* If it is not a static route, quit until the next comparison
* between the kernel and daemon tables, when it will be deleted.
*/
if (!(k->k_state & KS_STATIC)) {
k->k_state |= KS_DELETE;
@ -876,7 +883,8 @@ rtm_add(struct rt_msghdr *rtm,
*/
ifp = iflookup(k->k_gate);
if (ifp == 0) {
/* if there is no interface, maybe it is new
/* if there is no known interface,
* maybe there is a new interface
*/
ifinit();
ifp = iflookup(k->k_gate);
@ -1096,11 +1104,11 @@ read_rt(void)
? HOST_MASK
: std_mask(S_ADDR(INFO_DST(&info))));
strp += sprintf(strp, " %s",
strp += sprintf(strp, ": %s",
addrname(S_ADDR(INFO_DST(&info)), mask, 0));
if (IN_MULTICAST(ntohl(S_ADDR(INFO_DST(&info))))) {
trace_act("ignore %s for multicast %s\n", str);
trace_act("ignore multicast %s\n", str);
continue;
}
@ -1161,11 +1169,13 @@ kern_out(struct ag_info *ag)
* This includes routes that had RS_NET_SYN for interfaces that
* recently died.
*/
if (ag->ag_metric == HOPCNT_INFINITY
&& 0 == kern_find(htonl(ag->ag_dst_h), ag->ag_mask, 0))
return;
k = kern_add(htonl(ag->ag_dst_h), ag->ag_mask);
if (ag->ag_metric == HOPCNT_INFINITY) {
k = kern_find(htonl(ag->ag_dst_h), ag->ag_mask, 0);
if (k == 0)
return;
} else {
k = kern_add(htonl(ag->ag_dst_h), ag->ag_mask);
}
if (k->k_state & KS_NEW) {
/* will need to add new entry to the kernel table */
@ -1181,7 +1191,6 @@ kern_out(struct ag_info *ag)
return;
/* modify existing kernel entry if necessary */
k->k_state &= ~KS_DELETE;
if (k->k_gate != ag->ag_gate
|| k->k_metric != ag->ag_metric) {
k->k_gate = ag->ag_gate;
@ -1203,6 +1212,16 @@ kern_out(struct ag_info *ag)
k->k_state |= KS_GATEWAY;
k->k_state |= (KS_ADD | KS_DEL_ADD);
}
/* Deleting-and-adding is necessary to change aspects of a route.
* Just delete instead of deleting and then adding a bad route.
* Otherwise, we want to keep the route in the kernel.
*/
if (k->k_metric == HOPCNT_INFINITY
&& (k->k_state & KS_DEL_ADD))
k->k_state |= KS_DELETE;
else
k->k_state &= ~KS_DELETE;
#undef RT
}
@ -1296,31 +1315,40 @@ fix_kern(void)
continue;
}
if (k->k_state & KS_DELETE) {
if ((k->k_state & (KS_DELETE | KS_DYNAMIC))
== KS_DELETE) {
if (!(k->k_state & KS_DELETED))
rtioctl(RTM_DELETE,
k->k_dst,k->k_gate,
k->k_mask, 0, 0);
k->k_dst, k->k_gate, k->k_mask,
0, 0);
*pk = k->k_next;
free(k);
continue;
}
if (k->k_state & KS_DEL_ADD)
rtioctl(RTM_DELETE,
k->k_dst,k->k_gate,k->k_mask, 0, 0);
if (0 != (k->k_state&(KS_ADD|KS_CHANGE|KS_DEL_ADD))) {
if (k->k_state & KS_DEL_ADD) {
rtioctl(RTM_DELETE,
k->k_dst,k->k_gate,k->k_mask,
0, 0);
k->k_state &= ~KS_DYNAMIC;
}
flags = (k->k_state & KS_GATEWAY) ? RTF_GATEWAY : 0;
if (k->k_state & KS_ADD) {
rtioctl(RTM_ADD,
k->k_dst, k->k_gate, k->k_mask,
k->k_metric, flags);
} else if (k->k_state & KS_CHANGE) {
rtioctl(RTM_CHANGE,
k->k_dst,k->k_gate,k->k_mask,
k->k_metric, flags);
flags = 0;
if (0 != (k->k_state&(KS_GATEWAY|KS_DYNAMIC)))
flags |= RTF_GATEWAY;
if (k->k_state & KS_ADD) {
rtioctl(RTM_ADD,
k->k_dst, k->k_gate, k->k_mask,
k->k_metric, flags);
} else if (k->k_state & KS_CHANGE) {
rtioctl(RTM_CHANGE,
k->k_dst,k->k_gate,k->k_mask,
k->k_metric, flags);
}
k->k_state &= ~(KS_ADD|KS_CHANGE|KS_DEL_ADD);
}
k->k_state &= ~(KS_ADD | KS_CHANGE | KS_DEL_ADD);
/* Mark this route to be deleted in the next cycle.
* This deletes routes that disappear from the
@ -1354,7 +1382,7 @@ del_static(naddr dst,
*/
k = kern_find(dst, mask, 0);
if (k != 0) {
k->k_state &= ~KS_STATIC;
k->k_state &= ~(KS_STATIC | KS_DYNAMIC);
k->k_state |= KS_DELETE;
if (gone) {
k->k_state |= KS_DELETED;
@ -1368,8 +1396,8 @@ del_static(naddr dst,
}
/* Delete all routes generated from ICMP Redirects that use a given
* gateway, as well as all old redirected routes.
/* Delete all routes generated from ICMP Redirects that use a given gateway,
* as well as old redirected routes.
*/
void
del_redirects(naddr bad_gate,
@ -1391,6 +1419,7 @@ del_redirects(naddr bad_gate,
continue;
k->k_state |= KS_DELETE;
k->k_state &= ~KS_DYNAMIC;
need_kern.tv_sec = now.tv_sec;
trace_act("mark redirected %s --> %s for deletion\n",
addrname(k->k_dst, k->k_mask, 0),
@ -1492,11 +1521,7 @@ rtadd(naddr dst,
int i;
struct rt_spare *rts;
rt = (struct rt_entry *)malloc(sizeof (*rt));
if (rt == 0) {
BADERR(1,"rtadd malloc");
return;
}
rt = (struct rt_entry *)rtmalloc(sizeof (*rt), "rtadd");
bzero(rt, sizeof(*rt));
for (rts = rt->rt_spares, i = NUM_SPARES; i != 0; i--, rts++)
rts->rts_metric = HOPCNT_INFINITY;
@ -1525,6 +1550,8 @@ rtadd(naddr dst,
rt->rt_ifp = ifp;
rt->rt_seqno = update_seqno;
if (++total_routes == MAX_ROUTES)
msglog("have maximum (%d) routes", total_routes);
if (TRACEACTIONS)
trace_add_del("Add", rt);
@ -1672,6 +1699,7 @@ rtdelete(struct rt_entry *rt)
msglog("rnh_deladdr() failed");
} else {
free(rt);
total_routes--;
}
}
@ -1752,7 +1780,7 @@ rtbad_sub(struct rt_entry *rt)
if (ifp1 != 0 || (state & RS_NET_SYN)) {
rtchange(rt, ((rt->rt_state & ~(RS_NET_SYN | RS_LOCAL))
| state),
rt->rt_gate, rt->rt_router, 1,
rt->rt_gate, rt->rt_router, rt->rt_metric,
rt->rt_tag, ifp1, rt->rt_time, 0);
} else {
rtbad(rt);

View File

@ -31,9 +31,12 @@
* SUCH DAMAGE.
*/
#if !defined(lint) && !defined(sgi)
#if !defined(lint) && !defined(sgi) && !defined(__NetBSD__)
static char sccsid[] = "@(#)trace.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
#elif defined(__NetBSD__)
static char rcsid[] = "$NetBSD$";
#endif
#ident "$Revision: 1.1.3.3 $"
#define RIPCMDS
#include "defs.h"
@ -63,17 +66,18 @@ char *
naddr_ntoa(naddr a)
{
#define NUM_BUFS 4
static int i;
static int bufno;
static struct {
char str[16]; /* xxx.xxx.xxx.xxx\0 */
} bufs[NUM_BUFS];
struct in_addr addr;
char *s;
struct in_addr addr;
addr.s_addr = a;
s = strcpy(bufs[i].str, inet_ntoa(addr));
i = (i+1) % NUM_BUFS;
s = strcpy(bufs[bufno].str, inet_ntoa(addr));
bufno = (bufno+1) % NUM_BUFS;
return s;
#undef NUM_BUFS
}
@ -318,12 +322,17 @@ addrname(naddr addr, /* in network byte order */
naddr mask,
int force) /* 0=show mask if nonstandard, */
{ /* 1=always show mask, 2=never */
static char s[15+20];
char *sp;
#define NUM_BUFS 4
static int bufno;
static struct {
char str[15+20];
} bufs[NUM_BUFS];
char *s, *sp;
naddr dmask;
int i;
(void)strcpy(s, naddr_ntoa(addr));
s = strcpy(bufs[bufno].str, naddr_ntoa(addr));
bufno = (bufno+1) % NUM_BUFS;
if (force == 1 || (force == 0 && mask != std_mask(addr))) {
sp = &s[strlen(s)];
@ -335,11 +344,12 @@ addrname(naddr addr, /* in network byte order */
(void)sprintf(sp, "/%d", 32-i);
} else {
(void)sprintf(sp, " (mask %#x)", mask);
(void)sprintf(sp, " (mask %#x)", (u_int)mask);
}
}
return s;
#undef NUM_BUFS
}
@ -448,7 +458,7 @@ trace_bits(struct bits *tbl,
c = '|';
}
if (c || force)
if (c != '<' || force)
(void)fputs("> ", ftrace);
}
@ -477,12 +487,14 @@ trace_if(char *act,
lastlog();
(void)fprintf(ftrace, "%s interface %-4s ", act, ifp->int_name);
(void)fprintf(ftrace, "%-15s --> %s ",
(void)fprintf(ftrace, "%-15s-->%-15s ",
naddr_ntoa(ifp->int_addr),
((ifp->int_if_flags & IFF_POINTOPOINT)
? naddr_ntoa(ifp->int_dstaddr)
: addrname(htonl(ifp->int_net), ifp->int_mask, 0)));
(void)fprintf(ftrace, "metric=%d ", ifp->int_metric);
addrname(htonl((ifp->int_if_flags & IFF_POINTOPOINT)
? ifp->int_dstaddr
: ifp->int_net),
ifp->int_mask, 1));
if (ifp->int_metric != 0)
(void)fprintf(ftrace, "metric=%d ", ifp->int_metric);
trace_bits(if_bits, ifp->int_if_flags, 0);
trace_bits(is_bits, ifp->int_state, 0);
(void)fputc('\n',ftrace);
@ -517,7 +529,7 @@ trace_upslot(struct rt_entry *rt,
(void)fprintf(ftrace, "router=%s ",
naddr_ntoa(rts->rts_gate));
if (rts->rts_tag != 0)
(void)fprintf(ftrace, "tag=%#x ", rts->rts_tag);
(void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag));
(void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric);
if (rts->rts_ifp != 0)
(void)fprintf(ftrace, "%s ",
@ -530,7 +542,7 @@ trace_upslot(struct rt_entry *rt,
if (gate != router)
(void)fprintf(ftrace,"router=%s ",naddr_ntoa(router));
if (tag != rts->rts_tag)
(void)fprintf(ftrace, "tag=%#x ", tag);
(void)fprintf(ftrace, "tag=%#x ", ntohs(tag));
if (metric != rts->rts_metric)
(void)fprintf(ftrace, "metric=%-2d ", metric);
if (ifp != rts->rts_ifp && ifp != 0 )
@ -546,7 +558,7 @@ trace_upslot(struct rt_entry *rt,
if (gate != router)
(void)fprintf(ftrace, "router=%s ", naddr_ntoa(gate));
if (tag != 0)
(void)fprintf(ftrace, "tag=%#x ", tag);
(void)fprintf(ftrace, "tag=%#x ", ntohs(tag));
(void)fprintf(ftrace, "metric=%-2d ", metric);
if (ifp != 0)
(void)fprintf(ftrace, "%s ", ifp->int_name);
@ -618,7 +630,7 @@ trace_change(struct rt_entry *rt,
(void)fprintf(ftrace, "router=%s ",
naddr_ntoa(rt->rt_router));
if (rt->rt_tag != 0)
(void)fprintf(ftrace, "tag=%#x ", rt->rt_tag);
(void)fprintf(ftrace, "tag=%#x ", ntohs(rt->rt_tag));
trace_bits(rs_bits, rt->rt_state, rt->rt_state != state);
(void)fprintf(ftrace, "%s ",
rt->rt_ifp == 0 ? "?" : rt->rt_ifp->int_name);
@ -633,7 +645,7 @@ trace_change(struct rt_entry *rt,
if (router != gate)
(void)fprintf(ftrace, "router=%s ", naddr_ntoa(router));
if (rt->rt_tag != tag)
(void)fprintf(ftrace, "tag=%#x ", tag);
(void)fprintf(ftrace, "tag=%#x ", ntohs(tag));
if (rt->rt_state != state)
trace_bits(rs_bits, state, 1);
if (rt->rt_ifp != ifp)
@ -663,10 +675,10 @@ trace_add_del(char * action, struct rt_entry *rt)
(void)fprintf(ftrace, "router=%s ",
naddr_ntoa(rt->rt_router));
if (rt->rt_tag != 0)
(void)fprintf(ftrace, "tag=%#x ", rt->rt_tag);
(void)fprintf(ftrace, "tag=%#x ", ntohs(rt->rt_tag));
trace_bits(rs_bits, state, 0);
if (rt->rt_ifp != 0)
(void)fprintf(ftrace, "%s ", rt->rt_ifp->int_name);
(void)fprintf(ftrace, "%s ",
rt->rt_ifp != 0 ? rt->rt_ifp->int_name : "?");
(void)fprintf(ftrace, "%s\n", ts(rt->rt_time));
}
@ -688,12 +700,12 @@ trace_rip(char *dir1, char *dir2,
lastlog();
if (msg->rip_cmd >= RIPCMD_MAX
|| msg->rip_vers == 0) {
(void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s %s.%d%s%s"
" size=%d msg=%#x\n",
(void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s"
" %s.%d size=%d\n",
dir1, msg->rip_vers, msg->rip_cmd, dir2,
naddr_ntoa(who->sin_addr.s_addr),
ntohs(who->sin_port),
size, msg);
size);
return;
}
@ -721,13 +733,13 @@ trace_rip(char *dir1, char *dir2,
naddr_ntoa(n->n_dst));
if (n->n_mask != 0)
(void)fprintf(ftrace, "mask=%#x ",
ntohl(n->n_mask));
(u_int)ntohl(n->n_mask));
if (n->n_nhop != 0)
(void)fprintf(ftrace, " nhop=%s ",
naddr_ntoa(n->n_nhop));
if (n->n_tag != 0)
(void)fprintf(ftrace, "tag=%#x",
n->n_tag);
ntohs(n->n_tag));
(void)fputc('\n',ftrace);
continue;
}
@ -751,7 +763,7 @@ trace_rip(char *dir1, char *dir2,
"\t(af %d) %-18s mask=%#x",
ntohs(n->n_family),
naddr_ntoa(n->n_dst),
ntohl(n->n_mask));
(u_int)ntohl(n->n_mask));
} else if (msg->rip_vers == RIPv1) {
(void)fprintf(ftrace, "\t%-18s ",
addrname(n->n_dst,
@ -764,13 +776,13 @@ trace_rip(char *dir1, char *dir2,
n->n_mask==0 ? 2 : 0));
}
(void)fprintf(ftrace, "metric=%-2d ",
ntohl(n->n_metric));
(u_int)ntohl(n->n_metric));
if (n->n_nhop != 0)
(void)fprintf(ftrace, " nhop=%s ",
naddr_ntoa(n->n_nhop));
if (n->n_tag != 0)
(void)fprintf(ftrace, "tag=%#x",
n->n_tag);
ntohs(n->n_tag));
(void)fputc('\n',ftrace);
}
if (size != (char *)n - (char *)msg)