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added support for parsing the RSVP Properties and Error Spec Object
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hannes committed Mar 5, 2003
1 parent ab6d958 commit 15e66a1
Showing 1 changed file with 109 additions and 4 deletions.
113 changes: 109 additions & 4 deletions print-rsvp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@

#ifndef lint
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-rsvp.c,v 1.14 2002-12-14 02:03:10 hannes Exp $";
"@(#) $Header: /tcpdump/master/tcpdump/print-rsvp.c,v 1.15 2003-03-05 11:13:34 hannes Exp $";
#endif

#ifdef HAVE_CONFIG_H
Expand Down Expand Up @@ -214,10 +214,13 @@ static const struct tok rsvp_ctype_values[] = {
{ 256*RSVP_OBJ_LABEL+RSVP_CTYPE_1, "1" },
{ 256*RSVP_OBJ_ERO+RSVP_CTYPE_IPV4, "IPv4" },
{ 256*RSVP_OBJ_RRO+RSVP_CTYPE_IPV4, "IPv4" },
{ 256*RSVP_OBJ_ERROR_SPEC+RSVP_CTYPE_IPV4, "IPv4" },
{ 256*RSVP_OBJ_ERROR_SPEC+RSVP_CTYPE_IPV6, "IPv6" },
{ 256*RSVP_OBJ_RESTART_CAPABILITY+RSVP_CTYPE_1, "IPv4" },
{ 256*RSVP_OBJ_SESSION_ATTRIBUTE+RSVP_CTYPE_TUNNEL_IPV4, "Tunnel IPv4" },
{ 256*RSVP_OBJ_FASTREROUTE+RSVP_CTYPE_TUNNEL_IPV4, "Tunnel IPv4" },
{ 256*RSVP_OBJ_DETOUR+RSVP_CTYPE_TUNNEL_IPV4, "Tunnel IPv4" },
{ 256*RSVP_OBJ_PROPERTIES+RSVP_CTYPE_1, "1" },
{ 0, NULL}
};

Expand Down Expand Up @@ -277,6 +280,38 @@ static struct tok rsvp_session_attribute_flag_values[] = {
{ 0, NULL}
};

static struct tok rsvp_obj_prop_tlv_values[] = {
{ 0x01, "Cos" },
{ 0x02, "Metric 1" },
{ 0x04, "Metric 2" },
{ 0x08, "CCC Status" },
{ 0x10, "Path Type" },
{ 0, NULL}
};

#define RSVP_OBJ_ERROR_SPEC_CODE_ROUTING 24
#define RSVP_OBJ_ERROR_SPEC_CODE_NOTIFY 25

static struct tok rsvp_obj_error_code_values[] = {
{ RSVP_OBJ_ERROR_SPEC_CODE_ROUTING, "Routing Problem" },
{ RSVP_OBJ_ERROR_SPEC_CODE_NOTIFY, "Notify Error" },
{ 0, NULL}
};

static struct tok rsvp_obj_error_code_routing_values[] = {
{ 1, "Bad EXPLICIT_ROUTE object" },
{ 2, "Bad strict node" },
{ 3, "Bad loose node" },
{ 4, "Bad initial subobject" },
{ 5, "No route available toward destination" },
{ 6, "Unacceptable label value" },
{ 7, "RRO indicated routing loops" },
{ 8, "non-RSVP-capable router in the path" },
{ 9, "MPLS label allocation failure" },
{ 10, "Unsupported L3PID" },
{ 0, NULL}
};

#define FALSE 0
#define TRUE 1

Expand Down Expand Up @@ -422,7 +457,7 @@ rsvp_print(register const u_char *pptr, register u_int len) {
const struct rsvp_object_header *rsvp_obj_header;
const u_char *tptr,*obj_tptr;
u_short tlen,rsvp_obj_len,rsvp_obj_ctype,obj_tlen,intserv_serv_tlen;
int hexdump,processed;
int hexdump,processed,padbytes,error_code,error_value;
union {
float f;
u_int32_t i;
Expand Down Expand Up @@ -899,13 +934,84 @@ rsvp_print(register const u_char *pptr, register u_int len) {
}
break;

case RSVP_OBJ_ERROR_SPEC:
switch(rsvp_obj_ctype) {
case RSVP_CTYPE_IPV4:
error_code=*(obj_tptr+5);
error_value=EXTRACT_16BITS(obj_tptr+6);
printf("\n\t Error Node Adress: %s, Flags: [0x%02x]\n\t Error Code: %s (%u)",
ipaddr_string(obj_tptr),
*(obj_tptr+4),
tok2str(rsvp_obj_error_code_values,"unknown",error_code),
error_code,
error_value);
switch (error_code) {
case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING:
printf(", Error Value: %s (%u)",
tok2str(rsvp_obj_error_code_routing_values,"unknown",error_value));
break;
default:
printf(", Unknown Error Value (%u)");
}
break;
#ifdef INET6
case RSVP_CTYPE_IPV6:
error_code=*(obj_tptr+17);
error_value=EXTRACT_16BITS(obj_tptr+18);
printf("\n\t Error Node Adress: %s, Flags: [0x%02x]\n\t Error Code: %s (%u)",
ip6addr_string(obj_tptr),
*(obj_tptr+16),
tok2str(rsvp_obj_error_code_values,"unknown",error_code),
error_code,
error_value);

switch (error_code) {
case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING:
printf(", Error Value: %s (%u)",
tok2str(rsvp_obj_error_code_routing_values,"unknown",error_value));
break;
default:
printf(", Unknown Error Value (%u)");
}

break;
#endif
default:
hexdump=TRUE;
}
break;

case RSVP_OBJ_PROPERTIES:
switch(rsvp_obj_ctype) {
case RSVP_CTYPE_1:
padbytes = EXTRACT_16BITS(obj_tptr+2);
printf("\n\t TLV count: %u, padding bytes: %u",
EXTRACT_16BITS(obj_tptr),
padbytes);
obj_tlen-=4;
obj_tptr+=4;
/* loop through as long there is anything longer than the TLV header (2) */
while(obj_tlen >= 2 + padbytes) {
printf("\n\t %s TLV (0x%02x), length: %u", /* length includes header */
tok2str(rsvp_obj_prop_tlv_values,"unknown",*obj_tptr),
*obj_tptr,
*(obj_tptr+1));
print_unknown_data(obj_tptr+2,"\n\t\t",*(obj_tptr+1)-2);
obj_tlen-=*(obj_tptr+1);
obj_tptr+=*(obj_tptr+1);
}
break;
default:
hexdump=TRUE;
}
break;

/*
* FIXME those are the defined objects that lack a decoder
* you are welcome to contribute code ;-)
*/

case RSVP_OBJ_INTEGRITY:
case RSVP_OBJ_ERROR_SPEC:
case RSVP_OBJ_SCOPE:
case RSVP_OBJ_POLICY_DATA:
case RSVP_OBJ_MESSAGE_ID:
Expand All @@ -914,7 +1020,6 @@ rsvp_print(register const u_char *pptr, register u_int len) {
case RSVP_OBJ_RECOVERY_LABEL:
case RSVP_OBJ_UPSTREAM_LABEL:
case RSVP_OBJ_SUGGESTED_LABEL:
case RSVP_OBJ_PROPERTIES:
default:
if (vflag <= 1)
print_unknown_data(obj_tptr,"\n\t ",obj_tlen);
Expand Down

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