#ifndef lint
static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-juniper.c,v 1.8.2.12 2005-06-09 08:01:33 hannes Exp $ (LBL)";
+ "@(#) $Header: /tcpdump/master/tcpdump/print-juniper.c,v 1.8.2.22 2006-05-10 22:42:46 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "llc.h"
#include "nlpid.h"
#include "ethertype.h"
+#include "atm.h"
#define JUNIPER_BPF_OUT 0 /* Outgoing packet */
#define JUNIPER_BPF_IN 1 /* Incoming packet */
#define JUNIPER_BPF_PKT_IN 0x1 /* Incoming packet */
#define JUNIPER_BPF_NO_L2 0x2 /* L2 header stripped */
+#define JUNIPER_BPF_EXT 0x80 /* extensions present */
#define JUNIPER_MGC_NUMBER 0x4d4743 /* = "MGC" */
+#define JUNIPER_LSQ_COOKIE_RE (1 << 3)
+#define JUNIPER_LSQ_COOKIE_DIR (1 << 2)
#define JUNIPER_LSQ_L3_PROTO_SHIFT 4
#define JUNIPER_LSQ_L3_PROTO_MASK (0x17 << JUNIPER_LSQ_L3_PROTO_SHIFT)
#define JUNIPER_LSQ_L3_PROTO_IPV4 (0 << JUNIPER_LSQ_L3_PROTO_SHIFT)
#define JUNIPER_LSQ_L3_PROTO_IPV6 (1 << JUNIPER_LSQ_L3_PROTO_SHIFT)
#define JUNIPER_LSQ_L3_PROTO_MPLS (2 << JUNIPER_LSQ_L3_PROTO_SHIFT)
#define JUNIPER_LSQ_L3_PROTO_ISO (3 << JUNIPER_LSQ_L3_PROTO_SHIFT)
+#define AS_PIC_COOKIE_LEN 8
#define JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE 1
#define JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE 2
#define JUNIPER_PROTO_IPV4 2
#define JUNIPER_PROTO_IPV6 6
+#define MFR_BE_MASK 0xc0
+
static struct tok juniper_protocol_values[] = {
{ JUNIPER_PROTO_NULL, "Null" },
{ JUNIPER_PROTO_IPV4, "IPv4" },
}
#endif
+#ifdef DLT_JUNIPER_ETHER
+u_int
+juniper_ether_print(const struct pcap_pkthdr *h, register const u_char *p)
+{
+ struct juniper_l2info_t l2info;
+
+ l2info.pictype = DLT_JUNIPER_ETHER;
+ if(juniper_parse_header(p, h, &l2info) == 0)
+ return l2info.header_len;
+
+ p+=l2info.header_len;
+ /* this DLT contains nothing but raw Ethernet frames */
+ ether_print(p, l2info.length, l2info.caplen);
+ return l2info.header_len;
+}
+#endif
+
+#ifdef DLT_JUNIPER_PPP
+u_int
+juniper_ppp_print(const struct pcap_pkthdr *h, register const u_char *p)
+{
+ struct juniper_l2info_t l2info;
+
+ l2info.pictype = DLT_JUNIPER_PPP;
+ if(juniper_parse_header(p, h, &l2info) == 0)
+ return l2info.header_len;
+
+ p+=l2info.header_len;
+ /* this DLT contains nothing but raw ppp frames */
+ ppp_print(p, l2info.length);
+ return l2info.header_len;
+}
+#endif
+
+#ifdef DLT_JUNIPER_FRELAY
+u_int
+juniper_frelay_print(const struct pcap_pkthdr *h, register const u_char *p)
+{
+ struct juniper_l2info_t l2info;
+
+ l2info.pictype = DLT_JUNIPER_FRELAY;
+ if(juniper_parse_header(p, h, &l2info) == 0)
+ return l2info.header_len;
+
+ p+=l2info.header_len;
+ /* this DLT contains nothing but raw frame-relay frames */
+ fr_print(p, l2info.length);
+ return l2info.header_len;
+}
+#endif
+
+#ifdef DLT_JUNIPER_CHDLC
+u_int
+juniper_chdlc_print(const struct pcap_pkthdr *h, register const u_char *p)
+{
+ struct juniper_l2info_t l2info;
+
+ l2info.pictype = DLT_JUNIPER_CHDLC;
+ if(juniper_parse_header(p, h, &l2info) == 0)
+ return l2info.header_len;
+
+ p+=l2info.header_len;
+ /* this DLT contains nothing but raw c-hdlc frames */
+ chdlc_print(p, l2info.length);
+ return l2info.header_len;
+}
+#endif
+
#ifdef DLT_JUNIPER_PPPOE_ATM
u_int
juniper_pppoe_atm_print(const struct pcap_pkthdr *h, register const u_char *p)
/* first try the LSQ protos */
switch(l2info.proto) {
case JUNIPER_LSQ_L3_PROTO_IPV4:
- ip_print(gndo, p, l2info.length);
+ /* IP traffic going to the RE would not have a cookie
+ * -> this must be incoming IS-IS over PPP
+ */
+ if (l2info.cookie[4] == (JUNIPER_LSQ_COOKIE_RE|JUNIPER_LSQ_COOKIE_DIR))
+ ppp_print(p, l2info.length);
+ else
+ ip_print(gndo, p, l2info.length);
return l2info.header_len;
#ifdef INET6
case JUNIPER_LSQ_L3_PROTO_IPV6:
return l2info.header_len;
p+=l2info.header_len;
+
+ /* child-link ? */
+ if (l2info.cookie_len == 0) {
+ mfr_print(p,l2info.length);
+ return l2info.header_len;
+ }
+
+ /* first try the LSQ protos */
+ if (l2info.cookie_len == AS_PIC_COOKIE_LEN) {
+ switch(l2info.proto) {
+ case JUNIPER_LSQ_L3_PROTO_IPV4:
+ ip_print(gndo, p, l2info.length);
+ return l2info.header_len;
+#ifdef INET6
+ case JUNIPER_LSQ_L3_PROTO_IPV6:
+ ip6_print(p,l2info.length);
+ return l2info.header_len;
+#endif
+ case JUNIPER_LSQ_L3_PROTO_MPLS:
+ mpls_print(p,l2info.length);
+ return l2info.header_len;
+ case JUNIPER_LSQ_L3_PROTO_ISO:
+ isoclns_print(p,l2info.length,l2info.caplen);
+ return l2info.header_len;
+ default:
+ break;
+ }
+ return l2info.header_len;
+ }
+
/* suppress Bundle-ID if frame was captured on a child-link */
if (eflag && EXTRACT_32BITS(l2info.cookie) != 1) printf("Bundle-ID %u, ",l2info.bundle);
switch (l2info.proto) {
p+=l2info.header_len;
if (l2info.cookie[0] == 0x80) { /* OAM cell ? */
- oam_print(p,l2info.length);
+ oam_print(p,l2info.length,ATM_OAM_NOHEC);
return l2info.header_len;
}
juniper_atm2_print(const struct pcap_pkthdr *h, register const u_char *p)
{
u_int16_t extracted_ethertype;
- u_int32_t control_word;
struct juniper_l2info_t l2info;
p+=l2info.header_len;
if (l2info.cookie[7] & ATM2_PKT_TYPE_MASK) { /* OAM cell ? */
- control_word = EXTRACT_32BITS(p);
- if(control_word == 0 || control_word == 0x08000000) {
- l2info.header_len += 4;
- l2info.length -= 4;
- p += 4;
- }
- oam_print(p,l2info.length);
+ oam_print(p,l2info.length,ATM_OAM_NOHEC);
return l2info.header_len;
}
juniper_parse_header (const u_char *p, const struct pcap_pkthdr *h, struct juniper_l2info_t *l2info) {
struct juniper_cookie_table_t *lp = juniper_cookie_table;
- u_int idx;
+ u_int idx, offset;
+#ifdef DLT_JUNIPER_ATM2
+ u_int32_t control_word;
+#endif
l2info->header_len = 0;
l2info->cookie_len = 0;
l2info->direction = p[3]&JUNIPER_BPF_PKT_IN;
TCHECK2(p[0],4);
- if (EXTRACT_24BITS(p) != JUNIPER_MGC_NUMBER) /* magic number found ? */
+ if (EXTRACT_24BITS(p) != JUNIPER_MGC_NUMBER) { /* magic number found ? */
+ printf("no magic-number found!");
return 0;
- else
- l2info->header_len = 4;
+ }
if (eflag) /* print direction */
printf("%3s ",tok2str(juniper_direction_values,"---",l2info->direction));
+ /* extensions present ? - calculate how much bytes to skip */
+ if ((p[3] & JUNIPER_BPF_EXT ) == JUNIPER_BPF_EXT ) {
+ offset = 6 + EXTRACT_16BITS(p+4);
+ if (eflag>1)
+ printf("ext-len %u, ",EXTRACT_16BITS(p+4));
+ } else
+ offset = 4;
+
if ((p[3] & JUNIPER_BPF_NO_L2 ) == JUNIPER_BPF_NO_L2 ) {
if (eflag)
printf("no-L2-hdr, ");
* perform the v4/v6 heuristics
* to figure out what it is
*/
- TCHECK2(p[8],1);
- if(ip_heuristic_guess(p+8,l2info->length-8) == 0)
+ TCHECK2(p[offset+4],1);
+ if(ip_heuristic_guess(p+offset+4,l2info->length-(offset+4)) == 0)
printf("no IP-hdr found!");
- l2info->header_len+=4;
+ l2info->header_len=offset+4;
return 0; /* stop parsing the output further */
}
-
+ l2info->header_len = offset;
p+=l2info->header_len;
l2info->length -= l2info->header_len;
l2info->caplen -= l2info->header_len;
while (lp->s != NULL) {
if (lp->pictype == l2info->pictype) {
- l2info->cookie_len = lp->cookie_len;
- l2info->header_len += lp->cookie_len;
+ l2info->cookie_len += lp->cookie_len;
switch (p[0]) {
case LS_COOKIE_ID:
l2info->cookie_type = LS_COOKIE_ID;
l2info->cookie_len += 2;
- l2info->header_len += 2;
break;
case AS_COOKIE_ID:
l2info->cookie_type = AS_COOKIE_ID;
- l2info->cookie_len += 6;
- l2info->header_len += 6;
+ l2info->cookie_len = 8;
break;
default:
break;
}
+
+#ifdef DLT_JUNIPER_MFR
+ /* MFR child links don't carry cookies */
+ if (l2info->pictype == DLT_JUNIPER_MFR &&
+ (p[0] & MFR_BE_MASK) == MFR_BE_MASK) {
+ l2info->cookie_len = 0;
+ }
+#endif
+
+ l2info->header_len += l2info->cookie_len;
+ l2info->length -= l2info->cookie_len;
+ l2info->caplen -= l2info->cookie_len;
+
if (eflag)
printf("%s-PIC, cookie-len %u",
lp->s,
/* DLT_ specific parsing */
switch(l2info->pictype) {
+#ifdef DLT_JUNIPER_MLPPP
case DLT_JUNIPER_MLPPP:
switch (l2info->cookie_type) {
case LS_COOKIE_ID:
break;
}
break;
- case DLT_JUNIPER_MLFR: /* fall through */
+#endif
+#ifdef DLT_JUNIPER_MLFR
+ case DLT_JUNIPER_MLFR:
+ switch (l2info->cookie_type) {
+ case LS_COOKIE_ID:
+ l2info->bundle = l2info->cookie[1];
+ l2info->proto = EXTRACT_16BITS(p);
+ l2info->header_len += 2;
+ l2info->length -= 2;
+ l2info->caplen -= 2;
+ break;
+ case AS_COOKIE_ID:
+ l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff;
+ l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK;
+ break;
+ default:
+ l2info->bundle = l2info->cookie[0];
+ l2info->header_len += 2;
+ l2info->length -= 2;
+ l2info->caplen -= 2;
+ break;
+ }
+ break;
+#endif
+#ifdef DLT_JUNIPER_MFR
case DLT_JUNIPER_MFR:
switch (l2info->cookie_type) {
case LS_COOKIE_ID:
l2info->bundle = l2info->cookie[1];
+ l2info->proto = EXTRACT_16BITS(p);
+ l2info->header_len += 2;
+ l2info->length -= 2;
+ l2info->caplen -= 2;
break;
case AS_COOKIE_ID:
l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff;
+ l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK;
break;
default:
l2info->bundle = l2info->cookie[0];
break;
}
- l2info->proto = EXTRACT_16BITS(p);
- l2info->header_len += 2;
- l2info->length -= 2;
- l2info->caplen -= 2;
break;
+#endif
+#ifdef DLT_JUNIPER_ATM2
case DLT_JUNIPER_ATM2:
TCHECK2(p[0],4);
/* ATM cell relay control word present ? */
- if (l2info->cookie[7] & ATM2_PKT_TYPE_MASK && *p & 0x08) {
- l2info->header_len += 4;
+ if (l2info->cookie[7] & ATM2_PKT_TYPE_MASK) {
+ control_word = EXTRACT_32BITS(p);
+ /* some control word heuristics */
+ switch(control_word) {
+ case 0: /* zero control word */
+ case 0x08000000: /* < JUNOS 7.4 control-word */
+ case 0x08380000: /* cntl word plus cell length (56) >= JUNOS 7.4*/
+ l2info->header_len += 4;
+ break;
+ default:
+ break;
+ }
+
if (eflag)
- printf("control-word 0x%08x ",EXTRACT_32BITS(p));
+ printf("control-word 0x%08x ", control_word);
}
break;
+#endif
+#ifdef DLT_JUNIPER_ATM1
case DLT_JUNIPER_ATM1:
+ break;
+#endif
+#ifdef DLT_JUNIPER_PPP
+ case DLT_JUNIPER_PPP:
+ break;
+#endif
+#ifdef DLT_JUNIPER_CHDLC
+ case DLT_JUNIPER_CHDLC:
+ break;
+#endif
+#ifdef DLT_JUNIPER_ETHER
+ case DLT_JUNIPER_ETHER:
+ break;
+#endif
+#ifdef DLT_JUNIPER_FRELAY
+ case DLT_JUNIPER_FRELAY:
+ break;
+#endif
+
default:
+ printf("Unknown Juniper DLT_ type %u: ", l2info->pictype);
break;
}
projects / tcpdump / blobdiff