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support for BGP route-refresh messages (BGP message code 5)

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This commit is contained in:
hannes 2002-07-24 00:10:46 +00:00
parent addda66a53
commit ddbb910491
1 changed files with 35 additions and 1 deletions
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36
print-bgp.c
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@ -33,7 +33,7 @@
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.41 2002-07-22 23:16:12 hannes Exp $";
"@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.42 2002-07-24 00:10:46 hannes Exp $";
#endif
#include <sys/param.h>
@ -104,6 +104,17 @@ struct bgp_notification {
};
#define BGP_NOTIFICATION_SIZE 21 /* unaligned */
struct bgp_route_refresh {
u_int8_t bgp_marker[16];
u_int16_t len;
u_int8_t type;
u_int8_t afi; /* the compiler messes this structure up */
u_int8_t pad; /* when doing misaligned sequences of int8 and int16 */
u_int8_t res; /* afi should be int16 - so we have to access it using */
u_int8_t safi; /* EXTRACT_16BITS(&bgp_route_refresh->afi) (sigh) */
};
#define BGP_ROUTE_REFRESH_SIZE 23
struct bgp_attr {
u_int8_t bgpa_flags;
u_int8_t bgpa_type;
@ -1084,6 +1095,26 @@ trunc:
printf("[|BGP]");
}
static void
bgp_route_refresh_print(const u_char *pptr, int len) {
const struct bgp_route_refresh *bgp_route_refresh_header;
bgp_route_refresh_header = (const struct bgp_route_refresh *)pptr;
printf("\n\t AFI %s (%u), SAFI %s (%u)",
tok2str(bgp_afi_values,"Unknown",
EXTRACT_16BITS(&bgp_route_refresh_header->afi)), /* this stinks but the compiler pads the structure weird */
EXTRACT_16BITS(&bgp_route_refresh_header->afi),
tok2str(bgp_safi_values,"Unknown",
bgp_route_refresh_header->safi),
bgp_route_refresh_header->safi);
if (vflag)
print_unknown_data(pptr,"\n\t ", len);
return;
}
static void
bgp_header_print(const u_char *dat, int length)
{
@ -1108,6 +1139,9 @@ bgp_header_print(const u_char *dat, int length)
break;
case BGP_KEEPALIVE:
break;
case BGP_ROUTE_REFRESH:
bgp_route_refresh_print(dat, length);
break;
default:
/* we have no decoder for the BGP message */
printf("\n\t no Message %u decoder",bgp.bgp_type);