*/
#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-pim.c,v 1.35 2002-11-09 17:19:28 itojun Exp $ (LBL)";
+static const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-pim.c,v 1.49 2006-02-13 01:31:35 hannes Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#endif
#include <tcpdump-stdinc.h>
+#include "interface.h"
+
+#define PIMV2_TYPE_HELLO 0
+#define PIMV2_TYPE_REGISTER 1
+#define PIMV2_TYPE_REGISTER_STOP 2
+#define PIMV2_TYPE_JOIN_PRUNE 3
+#define PIMV2_TYPE_BOOTSTRAP 4
+#define PIMV2_TYPE_ASSERT 5
+#define PIMV2_TYPE_GRAFT 6
+#define PIMV2_TYPE_GRAFT_ACK 7
+#define PIMV2_TYPE_CANDIDATE_RP 8
+#define PIMV2_TYPE_PRUNE_REFRESH 9
+
+static struct tok pimv2_type_values[] = {
+ { PIMV2_TYPE_HELLO, "Hello" },
+ { PIMV2_TYPE_REGISTER, "Register" },
+ { PIMV2_TYPE_REGISTER_STOP, "Register Stop" },
+ { PIMV2_TYPE_JOIN_PRUNE, "Join / Prune" },
+ { PIMV2_TYPE_BOOTSTRAP, "Bootstrap" },
+ { PIMV2_TYPE_ASSERT, "Assert" },
+ { PIMV2_TYPE_GRAFT, "Graft" },
+ { PIMV2_TYPE_GRAFT_ACK, "Graft Acknowledgement" },
+ { PIMV2_TYPE_CANDIDATE_RP, "Candidate RP Advertisement" },
+ { PIMV2_TYPE_PRUNE_REFRESH, "Prune Refresh" },
+ { 0, NULL}
+};
+
+#define PIMV2_HELLO_OPTION_HOLDTIME 1
+#define PIMV2_HELLO_OPTION_LANPRUNEDELAY 2
+#define PIMV2_HELLO_OPTION_DR_PRIORITY_OLD 18
+#define PIMV2_HELLO_OPTION_DR_PRIORITY 19
+#define PIMV2_HELLO_OPTION_GENID 20
+#define PIMV2_HELLO_OPTION_REFRESH_CAP 21
+#define PIMV2_HELLO_OPTION_BIDIR_CAP 22
+#define PIMV2_HELLO_OPTION_ADDRESS_LIST 24
+#define PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD 65001
+
+static struct tok pimv2_hello_option_values[] = {
+ { PIMV2_HELLO_OPTION_HOLDTIME, "Hold Time" },
+ { PIMV2_HELLO_OPTION_LANPRUNEDELAY, "LAN Prune Delay" },
+ { PIMV2_HELLO_OPTION_DR_PRIORITY_OLD, "DR Priority (Old)" },
+ { PIMV2_HELLO_OPTION_DR_PRIORITY, "DR Priority" },
+ { PIMV2_HELLO_OPTION_GENID, "Generation ID" },
+ { PIMV2_HELLO_OPTION_REFRESH_CAP, "State Refresh Capability" },
+ { PIMV2_HELLO_OPTION_BIDIR_CAP, "Bi-Directional Capability" },
+ { PIMV2_HELLO_OPTION_ADDRESS_LIST, "Address List" },
+ { PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD, "Address List (Old)" },
+ { 0, NULL}
+};
+
+#define PIMV2_REGISTER_FLAG_LEN 4
+#define PIMV2_REGISTER_FLAG_BORDER 0x80000000
+#define PIMV2_REGISTER_FLAG_NULL 0x40000000
+
+static struct tok pimv2_register_flag_values[] = {
+ { PIMV2_REGISTER_FLAG_BORDER, "Border" },
+ { PIMV2_REGISTER_FLAG_NULL, "Null" },
+ { 0, NULL}
+};
/*
* XXX: We consider a case where IPv6 is not ready yet for portability,
#define PIM_TYPE(x) ((x) & 0x0f)
u_char pim_rsv; /* Reserved */
u_short pim_cksum; /* IP style check sum */
-} __attribute__((packed));
+};
#include <stdio.h>
#include "ip.h"
-static void pimv2_print(register const u_char *bp, register u_int len);
+static void pimv2_print(register const u_char *bp, register u_int len, u_int cksum);
static void
pimv1_join_prune_print(register const u_char *bp, register u_int len)
return;
}
- TCHECK2(bp[0], 4);
+ TCHECK2(bp[0], sizeof(struct in_addr));
if (vflag > 1)
(void)printf("\n");
(void)printf(" Upstream Nbr: %s", ipaddr_string(bp));
bp += 4;
len -= 4;
while (ngroups--) {
- TCHECK2(bp[0], 4);
+ /*
+ * XXX - does the address have length "addrlen" and the
+ * mask length "maddrlen"?
+ */
+ TCHECK2(bp[0], sizeof(struct in_addr));
(void)printf("\n\tGroup: %s", ipaddr_string(bp));
+ TCHECK2(bp[4], sizeof(struct in_addr));
if (EXTRACT_32BITS(&bp[4]) != 0xffffffff)
(void)printf("/%s", ipaddr_string(&bp[4]));
TCHECK2(bp[8], 4);
if (bp >= ep)
return;
+ TCHECK(bp[1]);
type = bp[1];
switch (type) {
break;
case 2:
(void)printf(" Register-Stop");
- TCHECK2(bp[12], 4);
+ TCHECK2(bp[12], sizeof(struct in_addr));
(void)printf(" for %s > %s", ipaddr_string(&bp[8]),
ipaddr_string(&bp[12]));
break;
break;
case 5:
(void)printf(" Assert");
- TCHECK2(bp[16], 4);
+ TCHECK2(bp[16], sizeof(struct in_addr));
(void)printf(" for %s > %s", ipaddr_string(&bp[16]),
ipaddr_string(&bp[8]));
if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
}
void
-pim_print(register const u_char *bp, register u_int len)
+pim_print(register const u_char *bp, register u_int len, u_int cksum)
{
register const u_char *ep;
register struct pim *pim = (struct pim *)bp;
#endif
switch (PIM_VER(pim->pim_typever)) {
- case 2: /* avoid hardcoding? */
- (void)printf("pim v2");
- pimv2_print(bp, len);
- break;
+ case 2:
+ if (!vflag) {
+ printf("PIMv%u, %s, length %u",
+ PIM_VER(pim->pim_typever),
+ tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever)),
+ len);
+ return;
+ } else {
+ printf("PIMv%u, length %u\n\t%s",
+ PIM_VER(pim->pim_typever),
+ len,
+ tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever)));
+ pimv2_print(bp, len, cksum);
+ }
+ break;
default:
- (void)printf("pim v%d", PIM_VER(pim->pim_typever));
+ printf("PIMv%u, length %u",
+ PIM_VER(pim->pim_typever),
+ len);
break;
}
return;
pimv2_addr_print(const u_char *bp, enum pimv2_addrtype at, int silent)
{
int af;
- const char *afstr;
int len, hdrlen;
TCHECK(bp[0]);
switch (bp[0]) {
case 1:
af = AF_INET;
- afstr = "IPv4";
- len = 4;
+ len = sizeof(struct in_addr);
break;
#ifdef INET6
case 2:
af = AF_INET6;
- afstr = "IPv6";
- len = 16;
+ len = sizeof(struct in6_addr);
break;
#endif
default:
hdrlen = 2;
} else {
switch (pimv2_addr_len) {
- case 4:
+ case sizeof(struct in_addr):
af = AF_INET;
- afstr = "IPv4";
break;
#ifdef INET6
- case 16:
+ case sizeof(struct in6_addr):
af = AF_INET6;
- afstr = "IPv6";
break;
#endif
default:
}
static void
-pimv2_print(register const u_char *bp, register u_int len)
+pimv2_print(register const u_char *bp, register u_int len, u_int cksum)
{
register const u_char *ep;
register struct pim *pim = (struct pim *)bp;
TCHECK(pim->pim_rsv);
pimv2_addr_len = pim->pim_rsv;
if (pimv2_addr_len != 0)
- (void)printf("[RFC2117-encoding] ");
+ (void)printf(", RFC2117-encoding");
+
+ printf(", cksum 0x%04x ", EXTRACT_16BITS(&pim->pim_cksum));
+ if (EXTRACT_16BITS(&pim->pim_cksum) == 0) {
+ printf("(unverified)");
+ } else {
+ printf("(%scorrect)", TTEST2(bp[0], len) && cksum ? "in" : "" );
+ }
switch (PIM_TYPE(pim->pim_typever)) {
- case 0:
+ case PIMV2_TYPE_HELLO:
{
u_int16_t otype, olen;
- (void)printf(" Hello");
bp += 4;
while (bp < ep) {
TCHECK2(bp[0], 4);
otype = EXTRACT_16BITS(&bp[0]);
olen = EXTRACT_16BITS(&bp[2]);
TCHECK2(bp[0], 4 + olen);
+
+ printf("\n\t %s Option (%u), length %u, Value: ",
+ tok2str( pimv2_hello_option_values,"Unknown",otype),
+ otype,
+ olen);
+ bp += 4;
+
switch (otype) {
- case 1: /* Hold time */
- (void)printf(" (Hold-time ");
- relts_print(EXTRACT_16BITS(&bp[4]));
- (void)printf(")");
- break;
+ case PIMV2_HELLO_OPTION_HOLDTIME:
+ relts_print(EXTRACT_16BITS(bp));
+ break;
- case 2: /* LAN Prune Delay */
- (void)printf(" (LAN-Prune-Delay: ");
+ case PIMV2_HELLO_OPTION_LANPRUNEDELAY:
if (olen != 4) {
- (void)printf("!olen=%d!)", olen);
+ (void)printf("ERROR: Option Lenght != 4 Bytes (%u)", olen);
} else {
char t_bit;
u_int16_t lan_delay, override_interval;
- lan_delay = EXTRACT_16BITS(&bp[4]);
- override_interval = EXTRACT_16BITS(&bp[6]);
+ lan_delay = EXTRACT_16BITS(bp);
+ override_interval = EXTRACT_16BITS(bp+2);
t_bit = (lan_delay & 0x8000)? 1 : 0;
lan_delay &= ~0x8000;
- (void)printf("T-bit=%d lan-delay=%dms override-interval=%dms)",
+ (void)printf("\n\t T-bit=%d, LAN delay %dms, Override interval %dms",
t_bit, lan_delay, override_interval);
}
break;
- case 18: /* Old DR-Priority */
- if (olen == 4)
- (void)printf(" (OLD-DR-Priority: %d)",
- EXTRACT_32BITS(&bp[4]));
- else
- goto unknown;
+ case PIMV2_HELLO_OPTION_DR_PRIORITY_OLD:
+ case PIMV2_HELLO_OPTION_DR_PRIORITY:
+ switch (olen) {
+ case 0:
+ printf("Bi-Directional Capability (Old)");
+ break;
+ case 4:
+ printf("%u", EXTRACT_32BITS(bp));
+ break;
+ default:
+ printf("ERROR: Option Lenght != 4 Bytes (%u)", olen);
+ break;
+ }
+ break;
+
+ case PIMV2_HELLO_OPTION_GENID:
+ (void)printf("0x%08x", EXTRACT_32BITS(bp));
break;
-
- case 19: /* DR-Priority */
- if (olen == 0) {
- (void)printf(" (OLD-bidir-capable)");
- break;
+ case PIMV2_HELLO_OPTION_REFRESH_CAP:
+ (void)printf("v%d", *bp);
+ if (*(bp+1) != 0) {
+ (void)printf(", interval ");
+ relts_print(*(bp+1));
}
- (void)printf(" (DR-Priority: ");
- if (olen != 4) {
- (void)printf("!olen=%d!)", olen);
- } else {
- (void)printf("%d)", EXTRACT_32BITS(&bp[4]));
+ if (EXTRACT_16BITS(bp+2) != 0) {
+ (void)printf(" ?0x%04x?", EXTRACT_16BITS(bp+2));
}
break;
- case 20:
- (void)printf(" (Genid: 0x%08x)", EXTRACT_32BITS(&bp[4]));
+ case PIMV2_HELLO_OPTION_BIDIR_CAP:
break;
- case 21:
- (void)printf(" (State Refresh Capable; v%d", bp[4]);
- if (bp[5] != 0) {
- (void)printf(" interval ");
- relts_print(bp[5]);
- }
- if (EXTRACT_16BITS(&bp[6]) != 0) {
- (void)printf(" ?0x%04x?", EXTRACT_16BITS(&bp[6]));
+ case PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD:
+ case PIMV2_HELLO_OPTION_ADDRESS_LIST:
+ if (vflag > 1) {
+ const u_char *ptr = bp;
+ while (ptr < (bp+olen)) {
+ int advance;
+
+ printf("\n\t ");
+ advance = pimv2_addr_print(ptr, pimv2_unicast, 0);
+ if (advance < 0) {
+ printf("...");
+ break;
+ }
+ ptr += advance;
+ }
}
- (void)printf(")");
- break;
-
- case 22: /* Bidir-Capable */
- (void)printf(" (bidir-capable)");
break;
-
default:
- unknown:
- if (vflag)
- (void)printf(" [Hello option %d]", otype);
+ if (vflag <= 1)
+ print_unknown_data(bp,"\n\t ",olen);
+ break;
}
- bp += 4 + olen;
+ /* do we want to see an additionally hexdump ? */
+ if (vflag> 1)
+ print_unknown_data(bp,"\n\t ",olen);
+ bp += olen;
}
break;
}
- case 1:
+ case PIMV2_TYPE_REGISTER:
{
struct ip *ip;
- (void)printf(" Register");
- if (vflag && bp + 8 <= ep) {
- (void)printf(" %s%s", bp[4] & 0x80 ? "B" : "",
- bp[4] & 0x40 ? "N" : "");
- }
- bp += 8; len -= 8;
+ if (!TTEST2(*(bp+4), PIMV2_REGISTER_FLAG_LEN))
+ goto trunc;
+
+ printf(", Flags [ %s ]\n\t",
+ tok2str(pimv2_register_flag_values,
+ "none",
+ EXTRACT_32BITS(bp+4)));
+ bp += 8; len -= 8;
/* encapsulated multicast packet */
- if (bp >= ep)
- break;
ip = (struct ip *)bp;
switch (IP_V(ip)) {
+ case 0: /* Null header */
+ (void)printf("IP-Null-header %s > %s",
+ ipaddr_string(&ip->ip_src),
+ ipaddr_string(&ip->ip_dst));
+ break;
+
case 4: /* IPv4 */
- printf(" ");
- ip_print(bp, len);
+ ip_print(gndo, bp, len);
break;
#ifdef INET6
case 6: /* IPv6 */
- printf(" ");
ip6_print(bp, len);
break;
#endif
- default:
- (void)printf(" IP ver %d", IP_V(ip));
- break;
+ default:
+ (void)printf("IP ver %d", IP_V(ip));
+ break;
}
break;
}
- case 2:
- (void)printf(" Register-Stop");
+ case PIMV2_TYPE_REGISTER_STOP:
bp += 4; len -= 4;
if (bp >= ep)
break;
bp += advance; len -= advance;
break;
- case 3:
- case 6:
- case 7:
+ case PIMV2_TYPE_JOIN_PRUNE:
+ case PIMV2_TYPE_GRAFT:
+ case PIMV2_TYPE_GRAFT_ACK:
+
+
+ /*
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |PIM Ver| Type | Addr length | Checksum |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Unicast-Upstream Neighbor Address |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Reserved | Num groups | Holdtime |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Encoded-Multicast Group Address-1 |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Number of Joined Sources | Number of Pruned Sources |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Encoded-Joined Source Address-1 |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | . |
+ * | . |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Encoded-Joined Source Address-n |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Encoded-Pruned Source Address-1 |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | . |
+ * | . |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Encoded-Pruned Source Address-n |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | . |
+ * | . |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Encoded-Multicast Group Address-n |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+
{
u_int8_t ngroup;
u_int16_t holdtime;
u_int16_t nprune;
int i, j;
- switch (PIM_TYPE(pim->pim_typever)) {
- case 3:
- (void)printf(" Join/Prune");
- break;
- case 6:
- (void)printf(" Graft");
- break;
- case 7:
- (void)printf(" Graft-ACK");
- break;
- }
bp += 4; len -= 4;
if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
if (bp >= ep)
break;
- (void)printf(" upstream-neighbor=");
+ (void)printf(", upstream-neighbor: ");
if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
(void)printf("...");
break;
break;
ngroup = bp[1];
holdtime = EXTRACT_16BITS(&bp[2]);
- (void)printf(" groups=%u", ngroup);
+ (void)printf("\n\t %u group(s)", ngroup);
if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
- (void)printf(" holdtime=");
+ (void)printf(", holdtime: ");
if (holdtime == 0xffff)
- (void)printf("infty");
+ (void)printf("infinite");
else
relts_print(holdtime);
}
for (i = 0; i < ngroup; i++) {
if (bp >= ep)
goto jp_done;
- (void)printf(" (group%d: ", i);
+ (void)printf("\n\t group #%u: ", i+1);
if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
(void)printf("...)");
goto jp_done;
}
njoin = EXTRACT_16BITS(&bp[0]);
nprune = EXTRACT_16BITS(&bp[2]);
- (void)printf(" join=%u", njoin);
+ (void)printf(", joined sources: %u, pruned sources: %u", njoin,nprune);
bp += 4; len -= 4;
for (j = 0; j < njoin; j++) {
- (void)printf(" ");
+ (void)printf("\n\t joined source #%u: ",j+1);
if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
(void)printf("...)");
goto jp_done;
}
bp += advance; len -= advance;
}
- (void)printf(" prune=%u", nprune);
for (j = 0; j < nprune; j++) {
- (void)printf(" ");
+ (void)printf("\n\t pruned source #%u: ",j+1);
if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
(void)printf("...)");
goto jp_done;
}
bp += advance; len -= advance;
}
- (void)printf(")");
}
jp_done:
break;
}
- case 4:
+ case PIMV2_TYPE_BOOTSTRAP:
{
int i, j, frpcnt;
-
- (void)printf(" Bootstrap");
bp += 4;
/* Fragment Tag, Hash Mask len, and BSR-priority */
bs_done:
break;
}
- case 5:
- (void)printf(" Assert");
+ case PIMV2_TYPE_ASSERT:
bp += 4; len -= 4;
if (bp >= ep)
break;
(void)printf(" metric=%u", EXTRACT_32BITS(&bp[4]));
break;
- case 8:
+ case PIMV2_TYPE_CANDIDATE_RP:
{
int i, pfxcnt;
-
- (void)printf(" Candidate-RP-Advertisement");
bp += 4;
/* Prefix-Cnt, Priority, and Holdtime */
break;
}
- case 9:
- (void)printf(" Prune-Refresh");
+ case PIMV2_TYPE_PRUNE_REFRESH:
(void)printf(" src=");
if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
(void)printf("...");
trunc:
(void)printf("[|pim]");
}
+
+/*
+ * Local Variables:
+ * c-style: whitesmith
+ * c-basic-offset: 8
+ * End:
+ */
projects / tcpdump / blobdiff