};
#define BGP_NOTIFICATION_SIZE 21 /* unaligned */
+struct bgp_route_refresh_orf {
+ nd_uint8_t refresh;
+ nd_uint8_t type;
+ nd_uint16_t len;
+};
+
struct bgp_route_refresh {
nd_byte bgp_marker[16];
nd_uint16_t len;
nd_uint8_t subtype;
nd_uint8_t safi;
};
+
+static const struct tok bgp_orf_refresh_type[] = {
+ { 1, "Immediate"},
+ { 2, "Defer"},
+ { 0, NULL }
+};
+
+static const struct tok bgp_orf_type[] = {
+ { 64, "Address Prefix ORF"},
+ { 65, "CP-ORF"},
+ { 0, NULL }
+};
+
#define BGP_ROUTE_REFRESH_SIZE 23
+#define BGP_ROUTE_REFRESH_SIZE_ORF BGP_ROUTE_REFRESH_SIZE + 5
#define BGP_ROUTE_REFRESH_SUBTYPE_NORMAL 0
#define BGP_ROUTE_REFRESH_SUBTYPE_BORR 1
#define BGP_ROUTE_REFRESH_SUBTYPE_EORR 2
#define BGPTYPE_PE_DISTINGUISHER_LABEL 27 /* RFC6514 */
#define BGPTYPE_ENTROPY_LABEL 28 /* RFC6790 */
#define BGPTYPE_LARGE_COMMUNITY 32 /* draft-ietf-idr-large-community-05 */
+#define BGPTYPE_BGPSEC_PATH 33 /* RFC8205 */
+#define BGPTYPE_OTC 35 /* RFC9234 */
#define BGPTYPE_ATTR_SET 128 /* RFC6368 */
#define BGP_MP_NLRI_MINSIZE 3 /* End of RIB Marker detection */
{ BGPTYPE_PE_DISTINGUISHER_LABEL, "PE Distinguisher Label"},
{ BGPTYPE_ENTROPY_LABEL, "Entropy Label"},
{ BGPTYPE_LARGE_COMMUNITY, "Large Community"},
+ { BGPTYPE_BGPSEC_PATH, "BGPsec Path"},
+ { BGPTYPE_OTC, "Only to Customer (OTC)"},
{ BGPTYPE_ATTR_SET, "Attribute Set"},
{ 255, "Reserved for development"},
{ 0, NULL}
#define BGP_CAPCODE_MR 4 /* RFC3107 */
#define BGP_CAPCODE_EXT_NH 5 /* RFC5549 */
#define BGP_CAPCODE_EXT_MSG 6 /* RFC8654 */
+#define BGP_CAPCODE_BGPSEC 7 /* RFC8205 */
#define BGP_CAPCODE_ML 8 /* RFC8277 */
+#define BGP_CAPCODE_ROLE 9 /* RFC9234 */
#define BGP_CAPCODE_RESTART 64 /* RFC4724 */
#define BGP_CAPCODE_AS_NEW 65 /* RFC6793 */
#define BGP_CAPCODE_DYN_CAP 67 /* draft-ietf-idr-dynamic-cap */
{ BGP_CAPCODE_MR, "Multiple Routes to a Destination"},
{ BGP_CAPCODE_EXT_NH, "Extended Next Hop Encoding"},
{ BGP_CAPCODE_EXT_MSG, "BGP Extended Message"},
+ { BGP_CAPCODE_BGPSEC, "BGPsec"},
{ BGP_CAPCODE_ML, "Multiple Labels"},
{ BGP_CAPCODE_RESTART, "Graceful Restart"},
{ BGP_CAPCODE_AS_NEW, "32-Bit AS Number"},
{ BGP_CAPCODE_ENH_RR, "Enhanced Route Refresh"},
{ BGP_CAPCODE_LLGR, "Long-lived Graceful Restart"},
{ BGP_CAPCODE_RR_CISCO, "Route Refresh (Cisco)"},
+ { BGP_CAPCODE_ROLE, "Role Capability"},
{ 0, NULL}
};
/* RFC 4486 */
#define BGP_NOTIFY_MINOR_CEASE_MAXPRFX 1
+/* RFC 9003 */
#define BGP_NOTIFY_MINOR_CEASE_SHUT 2
#define BGP_NOTIFY_MINOR_CEASE_RESET 4
+/* RFC 8538 */
+#define BGP_NOTIFY_MINOR_CEASE_HARDRESET 9
static const struct tok bgp_notify_minor_cease_values[] = {
{ BGP_NOTIFY_MINOR_CEASE_MAXPRFX, "Maximum Number of Prefixes Reached"},
{ BGP_NOTIFY_MINOR_CEASE_SHUT, "Administrative Shutdown"},
{ 5, "Connection Rejected"},
{ 6, "Other Configuration Change"},
{ 7, "Connection Collision Resolution"},
+ { 8, "Out of Resources"},
+ { BGP_NOTIFY_MINOR_CEASE_HARDRESET, "Hard Reset"},
+ { 10, "BFD Down"},
{ 0, NULL}
};
{ 0, NULL}
};
+#define BGP_ROLE_PROVIDER 0
+#define BGP_ROLE_RS 1
+#define BGP_ROLE_RS_CLIENT 2
+#define BGP_ROLE_CUSTOMER 3
+#define BGP_ROLE_PEER 4
+
+static const struct tok bgp_role_values[] = {
+ { BGP_ROLE_PROVIDER, "Provider"},
+ { BGP_ROLE_RS, "RS"},
+ { BGP_ROLE_RS_CLIENT, "RS-Client"},
+ { BGP_ROLE_CUSTOMER, "Customer"},
+ { BGP_ROLE_PEER, "Peer"},
+ { 0, NULL}
+};
+
/* Subsequent address family identifier, RFC2283 section 7 */
#define SAFNUM_RES 0
#define SAFNUM_UNICAST 1
{ 0, NULL }
};
+static const struct tok bgp_graceful_restart_comm_flag_values[] = {
+ { 0x8, "R" },
+ { 0x4, "N" },
+ { 0, NULL }
+};
+
/* well-known community */
#define BGP_COMMUNITY_NO_EXPORT 0xffffff01
#define BGP_COMMUNITY_NO_ADVERT 0xffffff02
#define BGP_EXT_COM_RO_1 0x0103 /* Route Origin,Format IP address:AN(2bytes) */
#define BGP_EXT_COM_RO_2 0x0203 /* Route Origin,Format AN(4bytes):local(2bytes) */
#define BGP_EXT_COM_LINKBAND 0x4004 /* Link Bandwidth,Format AS(2B):Bandwidth(4B) */
+#define BGP_EXT_COM_OVS 0x4300 /* BGP Prefix Origin Validation State Extended Community */
/* rfc2547 bgp-mpls-vpns */
#define BGP_EXT_COM_VPN_ORIGIN 0x0005 /* OSPF Domain ID / VPN of Origin - draft-rosen-vpns-ospf-bgp-mpls */
#define BGP_EXT_COM_VPN_ORIGIN2 0x0105 /* duplicate - keep for backwards compatibility */
{ 0, NULL},
};
+/* rfc8097 */
+static const struct tok bgp_prefix_origin_validation_state[] = {
+ { 0, "valid" },
+ { 1, "not found" },
+ { 2, "invalid" },
+ { 0, NULL },
+};
+
static const struct tok bgp_extd_comm_subtype_values[] = {
{ BGP_EXT_COM_RT_0, "target"},
{ BGP_EXT_COM_RT_1, "target"},
{ BGP_EXT_COM_RO_1, "origin"},
{ BGP_EXT_COM_RO_2, "origin"},
{ BGP_EXT_COM_LINKBAND, "link-BW"},
+ { BGP_EXT_COM_OVS, "origin-validation-state"},
{ BGP_EXT_COM_VPN_ORIGIN, "ospf-domain"},
{ BGP_EXT_COM_VPN_ORIGIN2, "ospf-domain"},
{ BGP_EXT_COM_VPN_ORIGIN3, "ospf-domain"},
{ 0, NULL },
};
+static const struct tok bgp_bgpsec_bitmap_str[] = {
+ { 1U << 0, "MBZ-0" },
+ { 1U << 1, "MBZ-1" },
+ { 1U << 2, "MBZ-2" },
+ { 1U << 3, "MBZ-3" },
+ { 1U << 4, "MBZ-4" },
+ { 1U << 5, "MBZ-5" },
+ { 1U << 6, "MBZ-6" },
+ { 1U << 7, "C" },
+ { 0, NULL}
+};
+
#define AS_STR_SIZE sizeof("xxxxx.xxxxx")
/*
bw.f*8/1000000);
break;
+ case BGP_EXT_COM_OVS:
+ /* The Reserved field MUST be set to 0 and ignored upon the
+ * receipt of this community.
+ */
+ {
+ uint64_t reserved = GET_BE_U_5(pptr + 2);
+
+ if (reserved)
+ ND_PRINT("[the reserved field 0x%" PRIx64 " MUST be 0] ",
+ reserved);
+ ND_PRINT("ovs: %s",
+ tok2str(bgp_prefix_origin_validation_state,
+ "unknown origin validation state",
+ GET_U_1(pptr + 7)));
+ }
+ break;
+
case BGP_EXT_COM_VPN_ORIGIN:
case BGP_EXT_COM_VPN_ORIGIN2:
case BGP_EXT_COM_VPN_ORIGIN3:
safi);
switch(af<<8 | safi) {
- case (AFNUM_INET<<8 | SAFNUM_UNICAST):
- case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
- case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
- case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
- case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
- case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
- case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
- case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
- case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
- case (AFNUM_INET<<8 | SAFNUM_MDT):
- case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
- case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
- case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
- case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
- case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
- case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
- case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_UNICAST):
+ case (AFNUM_IP<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_LABUNICAST):
+ case (AFNUM_IP<<8 | SAFNUM_RT_ROUTING_INFO):
+ case (AFNUM_IP<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_IP<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_VPNUNIMULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_MULTICAST_VPN):
+ case (AFNUM_IP<<8 | SAFNUM_MDT):
+ case (AFNUM_IP6<<8 | SAFNUM_UNICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_LABUNICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_VPNUNIMULTICAST):
case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
u_int path_id = 0;
switch (af<<8 | safi) {
- case (AFNUM_INET<<8 | SAFNUM_UNICAST):
- case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
- case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_UNICAST):
+ case (AFNUM_IP<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_UNIMULTICAST):
if (add_path4) {
path_id = GET_BE_U_4(tptr);
tptr += 4;
advance += 4;
}
break;
- case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
+ case (AFNUM_IP<<8 | SAFNUM_LABUNICAST):
advance = decode_labeled_prefix4(ndo, tptr, len, buf, buflen);
if (advance == -1)
ND_PRINT("\n\t (illegal prefix length)");
else
ND_PRINT("\n\t %s", buf);
break;
- case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
- case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
- case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_IP<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_VPNUNIMULTICAST):
advance = decode_labeled_vpn_prefix4(ndo, tptr, buf, buflen);
if (advance == -1)
ND_PRINT("\n\t (illegal prefix length)");
else
ND_PRINT("\n\t %s", buf);
break;
- case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
+ case (AFNUM_IP<<8 | SAFNUM_RT_ROUTING_INFO):
advance = decode_rt_routing_info(ndo, tptr);
break;
- case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): /* fall through */
- case (AFNUM_INET6<<8 | SAFNUM_MULTICAST_VPN):
+ case (AFNUM_IP<<8 | SAFNUM_MULTICAST_VPN): /* fall through */
+ case (AFNUM_IP6<<8 | SAFNUM_MULTICAST_VPN):
advance = decode_multicast_vpn(ndo, tptr, buf, buflen);
if (advance == -1)
ND_PRINT("\n\t (illegal prefix length)");
ND_PRINT("\n\t %s", buf);
break;
- case (AFNUM_INET<<8 | SAFNUM_MDT):
+ case (AFNUM_IP<<8 | SAFNUM_MDT):
advance = decode_mdt_vpn_nlri(ndo, tptr, buf, buflen);
if (advance == -1)
ND_PRINT("\n\t (illegal prefix length)");
else
ND_PRINT("\n\t %s", buf);
break;
- case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
- case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
- case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_UNICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_UNIMULTICAST):
if (add_path6) {
path_id = GET_BE_U_4(tptr);
tptr += 4;
advance += 4;
}
break;
- case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_LABUNICAST):
advance = decode_labeled_prefix6(ndo, tptr, len, buf, buflen);
if (advance == -1)
ND_PRINT("\n\t (illegal prefix length)");
else
ND_PRINT("\n\t %s", buf);
break;
- case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
- case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
- case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_VPNUNIMULTICAST):
advance = decode_labeled_vpn_prefix6(ndo, tptr, buf, buflen);
if (advance == -1)
ND_PRINT("\n\t (illegal prefix length)");
return -2;
}
+static const struct tok bgp_flags[] = {
+ { 0x80, "O"},
+ { 0x40, "T"},
+ { 0x20, "P"},
+ { 0x10, "E"},
+ { 0, NULL }
+};
+
static int
bgp_attr_print(netdissect_options *ndo,
uint8_t atype, const u_char *pptr, u_int len,
ND_PRINT(", " );
}
switch(af<<8 | safi) {
- case (AFNUM_INET<<8 | SAFNUM_UNICAST):
- case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
- case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
- case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
- case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
- case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
- case (AFNUM_INET<<8 | SAFNUM_MDT):
+ case (AFNUM_IP<<8 | SAFNUM_UNICAST):
+ case (AFNUM_IP<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_LABUNICAST):
+ case (AFNUM_IP<<8 | SAFNUM_RT_ROUTING_INFO):
+ case (AFNUM_IP<<8 | SAFNUM_MULTICAST_VPN):
+ case (AFNUM_IP<<8 | SAFNUM_MDT):
if (tnhlen < sizeof(nd_ipv4)) {
ND_PRINT("invalid len");
tptr += tnhlen;
tlen -= sizeof(nd_ipv4);
}
break;
- case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
- case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
- case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_IP<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_IP<<8 | SAFNUM_VPNUNIMULTICAST):
if (tnhlen < sizeof(nd_ipv4)+BGP_VPN_RD_LEN) {
ND_PRINT("invalid len");
tptr += tnhlen;
tnhlen -= (sizeof(nd_ipv4)+BGP_VPN_RD_LEN);
}
break;
- case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
- case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
- case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
- case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_UNICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_LABUNICAST):
if (tnhlen < sizeof(nd_ipv6)) {
ND_PRINT("invalid len");
tptr += tnhlen;
tnhlen -= sizeof(nd_ipv6);
}
break;
- case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
- case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
- case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_IP6<<8 | SAFNUM_VPNUNIMULTICAST):
if (tnhlen < sizeof(nd_ipv6)+BGP_VPN_RD_LEN) {
ND_PRINT("invalid len");
tptr += tnhlen;
ND_PRINT("\n\t %u SNPA", snpa);
for (/*nothing*/; snpa != 0; snpa--) {
uint8_t snpalen;
- if (tlen < 1)
- goto trunc;
+ if (tlen < 1)
+ goto trunc;
snpalen = GET_U_1(tptr);
ND_PRINT("\n\t %u bytes", snpalen);
tptr++;
alen);
if (aflags) {
- ND_PRINT(", Flags [%s%s%s%s",
- aflags & 0x80 ? "O" : "",
- aflags & 0x40 ? "T" : "",
- aflags & 0x20 ? "P" : "",
- aflags & 0x10 ? "E" : "");
+ ND_PRINT(", Flags [%s",
+ bittok2str_nosep(bgp_flags, "", aflags));
if (aflags & 0xf)
ND_PRINT("+%x", aflags & 0xf);
ND_PRINT("]");
len -= 12;
}
break;
+ case BGPTYPE_BGPSEC_PATH:
+ {
+ uint16_t sblen, splen;
+
+ splen = GET_BE_U_2(tptr);
+
+ /*
+ * A secure path has a minimum length of 8 bytes:
+ * 2 bytes length field
+ * 6 bytes per secure path segment
+ */
+ ND_ICHECKMSG_U("secure path length", splen, <, 8);
+
+ ND_PRINT("\n\t Secure Path Length: %u", splen);
+
+ tptr += 2;
+ splen -= 2;
+ /* Make sure the secure path length does not signal trailing bytes */
+ if (splen % 6) {
+ ND_PRINT(" [total segments length %u != N x 6]", splen);
+ goto invalid;
+ }
+
+ /* Parse secure path segments */
+ while (splen != 0) {
+ uint8_t pcount = GET_U_1(tptr);
+ uint8_t flags = GET_U_1(tptr + 1);
+ uint32_t asn = GET_BE_U_4(tptr + 2);
+ ND_PRINT("\n\t Secure Path Segment: pCount: %u, Flags: [%s] (0x%02x), AS: %u",
+ pcount,
+ bittok2str(bgp_bgpsec_bitmap_str, "none", flags),
+ flags,
+ asn);
+ tptr += 6;
+ splen -= 6;
+ }
+
+ sblen = GET_BE_U_2(tptr);
+
+ ND_PRINT("\n\t Signature Block: Length: %u, Algo ID: %u",
+ sblen,
+ GET_U_1(tptr + 2));
+
+ tptr += 3;
+ sblen -= 3;
+ /* Parse signature segments */
+ while (sblen > 0) {
+ uint16_t siglen;
+
+ ND_PRINT("\n\t Signature Segment:\n\t SKI: ");
+ ND_ICHECKMSG_U("remaining length", sblen, <, 20);
+ hex_print(ndo, "\n\t ", tptr, 20);
+ tptr += 20;
+ sblen -= 20;
+ ND_ICHECKMSG_U("remaining length", sblen, <, 2);
+ siglen = GET_BE_U_2(tptr);
+ tptr += 2;
+ sblen -= 2;
+
+ ND_PRINT("\n\t Length: %u", siglen);
+ ND_ICHECKMSG_U("remaining length", sblen, <, siglen);
+ ND_PRINT("\n\t Signature:");
+ hex_print(ndo, "\n\t ", tptr, siglen);
+ tptr += siglen;
+ sblen -= siglen;
+ }
+ break;
+ }
+ case BGPTYPE_OTC:
+ {
+ if (len < 4) {
+ ND_PRINT("invalid len");
+ break;
+ }
+ ND_PRINT("\n\t OTC %u", GET_BE_U_4(pptr));
+ break;
+ }
default:
ND_TCHECK_LEN(pptr, len);
ND_PRINT("\n\t no Attribute %u decoder", atype); /* we have no decoder for the attribute */
}
return 1;
+invalid:
+ nd_print_invalid(ndo);
+ return 1;
+
trunc:
return 0;
}
tok2str(bgp_safi_values, "Unknown", GET_U_1(opt + i + 5)),
GET_U_1(opt + i + 5));
break;
+ case BGP_CAPCODE_BGPSEC:
+ /* Version (4 bits), Direction (1 bit), Flags (3 bits), AFI (16 bits) */
+ cap_offset = 1;
+ /* The capability length [...] MUST be set to 3. */
+ if (cap_len != 3) {
+ ND_PRINT(" [%u != 3]", cap_len);
+ return;
+ }
+
+ ND_PRINT("\n\t\tVersion %u, Direction %s (%u), AFI %s (%u)",
+ GET_U_1(opt + i + 2)&0xf0,
+ (GET_U_1(opt + i + 2)&0x08) ? "Send" : "Receive",
+ (GET_U_1(opt + i + 2)&0x08)>>3,
+ bittok2str(af_values, "Unknown",
+ GET_BE_U_2(opt + i + cap_offset + 2)),
+ GET_BE_U_2(opt + i + cap_offset + 2));
+ break;
case BGP_CAPCODE_ML:
cap_offset = 2;
tcap_len = cap_len;
}
tcap_len=cap_len;
ND_PRINT("\n\t\tRestart Flags: [%s], Restart Time %us",
- ((GET_U_1(opt + i + 2))&0x80) ? "R" : "none",
+ bittok2str(bgp_graceful_restart_comm_flag_values,
+ "none", GET_U_1(opt + i + 2) >> 4),
GET_BE_U_2(opt + i + 2)&0xfff);
tcap_len-=2;
cap_offset=4;
cap_offset += 4;
}
break;
+ case BGP_CAPCODE_ROLE:
+ if (cap_len < 1) {
+ ND_PRINT(" (too short, < 1)");
+ return;
+ }
+ ND_PRINT("\n\t\tRole name %s (%u)",
+ tok2str(bgp_role_values, "Unassigned",
+ GET_U_1(opt + i + 2)), GET_U_1(opt + i + 2));
+ break;
case BGP_CAPCODE_RR:
case BGP_CAPCODE_LLGR:
case BGP_CAPCODE_RR_CISCO:
alen);
if (aflags) {
- ND_PRINT(", Flags [%s%s%s%s",
- aflags & 0x80 ? "O" : "",
- aflags & 0x40 ? "T" : "",
- aflags & 0x20 ? "P" : "",
- aflags & 0x10 ? "E" : "");
+ ND_PRINT(", Flags [%s",
+ bittok2str_nosep(bgp_flags, "", aflags));
if (aflags & 0xf)
ND_PRINT("+%x", aflags & 0xf);
ND_PRINT("]: ");
}
static void
-bgp_notification_print(netdissect_options *ndo,
- const u_char *dat, u_int length)
+bgp_notification_print_code(netdissect_options *ndo,
+ const u_char *dat, u_int length,
+ uint8_t bgpn_major, uint8_t bgpn_minor)
{
- const struct bgp_notification *bgp_notification_header;
- const u_char *tptr;
- uint8_t bgpn_major, bgpn_minor;
-
- ND_TCHECK_LEN(dat, BGP_NOTIFICATION_SIZE);
- if (length<BGP_NOTIFICATION_SIZE)
- return;
-
- bgp_notification_header = (const struct bgp_notification *)dat;
- bgpn_major = GET_U_1(bgp_notification_header->bgpn_major);
- bgpn_minor = GET_U_1(bgp_notification_header->bgpn_minor);
-
ND_PRINT(", %s (%u)",
tok2str(bgp_notify_major_values, "Unknown Error",
bgpn_major),
/* RFC 4486 mentions optionally 7 bytes
* for the maxprefix subtype, which may contain AFI, SAFI and MAXPREFIXES
*/
- if(bgpn_minor == BGP_NOTIFY_MINOR_CEASE_MAXPRFX && length >= BGP_NOTIFICATION_SIZE + 7) {
- tptr = dat + BGP_NOTIFICATION_SIZE;
+ if(bgpn_minor == BGP_NOTIFY_MINOR_CEASE_MAXPRFX && length >= 7) {
ND_PRINT(", AFI %s (%u), SAFI %s (%u), Max Prefixes: %u",
- tok2str(af_values, "Unknown", GET_BE_U_2(tptr)),
- GET_BE_U_2(tptr),
- tok2str(bgp_safi_values, "Unknown", GET_U_1((tptr + 2))),
- GET_U_1((tptr + 2)),
- GET_BE_U_4(tptr + 3));
+ tok2str(af_values, "Unknown", GET_BE_U_2(dat)),
+ GET_BE_U_2(dat),
+ tok2str(bgp_safi_values, "Unknown", GET_U_1((dat + 2))),
+ GET_U_1((dat + 2)),
+ GET_BE_U_4(dat + 3));
}
/*
* RFC 9003 describes a method to send a communication
*/
if ((bgpn_minor == BGP_NOTIFY_MINOR_CEASE_SHUT ||
bgpn_minor == BGP_NOTIFY_MINOR_CEASE_RESET) &&
- length >= BGP_NOTIFICATION_SIZE + 1) {
- tptr = dat + BGP_NOTIFICATION_SIZE;
- uint8_t shutdown_comm_length = GET_U_1(tptr);
+ length >= 1) {
+ uint8_t shutdown_comm_length = GET_U_1(dat);
uint8_t remainder_offset = 0;
/* garbage, hexdump it all */
- if (shutdown_comm_length > length - (BGP_NOTIFICATION_SIZE + 1)) {
+ if (shutdown_comm_length > length - 1) {
ND_PRINT(", invalid Shutdown Communication length");
- }
- else if (shutdown_comm_length == 0) {
+ } else if (shutdown_comm_length == 0) {
ND_PRINT(", empty Shutdown Communication");
remainder_offset += 1;
}
/* a proper shutdown communication */
else {
ND_PRINT(", Shutdown Communication (length: %u): \"", shutdown_comm_length);
- nd_printjn(ndo, tptr+1, shutdown_comm_length);
+ nd_printjn(ndo, dat+1, shutdown_comm_length);
ND_PRINT("\"");
remainder_offset += shutdown_comm_length + 1;
}
/* if there is trailing data, hexdump it */
- if(length - (remainder_offset + BGP_NOTIFICATION_SIZE) > 0) {
- ND_PRINT(", Data: (length: %u)", length - (remainder_offset + BGP_NOTIFICATION_SIZE));
- hex_print(ndo, "\n\t\t", tptr + remainder_offset, length - (remainder_offset + BGP_NOTIFICATION_SIZE));
+ if(length - remainder_offset > 0) {
+ ND_PRINT(", Data: (length: %u)", length - remainder_offset);
+ hex_print(ndo, "\n\t\t", dat + remainder_offset, length - remainder_offset);
}
}
+ /*
+ * RFC8538 describes the Hard Reset cease subcode, which contains another
+ * notification code and subcode.
+ */
+ if (bgpn_minor == BGP_NOTIFY_MINOR_CEASE_HARDRESET && length >= 2) {
+ bgpn_major = GET_U_1(dat++);
+ bgpn_minor = GET_U_1(dat++);
+ length -= 2;
+ bgp_notification_print_code(ndo, dat, length, bgpn_major, bgpn_minor);
+ }
break;
default:
+ if (bgpn_minor != 0) {
+ ND_PRINT(", subcode %u", bgpn_minor);
+ }
break;
}
return;
+}
+
+static void
+bgp_notification_print(netdissect_options *ndo,
+ const u_char *dat, u_int length)
+{
+ const struct bgp_notification *bgp_notification_header;
+ uint8_t bgpn_major, bgpn_minor;
+
+ ND_TCHECK_LEN(dat, BGP_NOTIFICATION_SIZE);
+ if (length<BGP_NOTIFICATION_SIZE)
+ return;
+
+ bgp_notification_header = (const struct bgp_notification *)dat;
+ bgpn_major = GET_U_1(bgp_notification_header->bgpn_major);
+ bgpn_minor = GET_U_1(bgp_notification_header->bgpn_minor);
+ bgp_notification_print_code(ndo, dat + BGP_NOTIFICATION_SIZE,
+ length - BGP_NOTIFICATION_SIZE, bgpn_major, bgpn_minor);
+ return;
trunc:
nd_print_trunc(ndo);
}
{
const struct bgp_route_refresh *bgp_route_refresh_header;
- ND_TCHECK_LEN(pptr, BGP_ROUTE_REFRESH_SIZE);
-
/* some little sanity checking */
if (len<BGP_ROUTE_REFRESH_SIZE)
return;
GET_U_1(bgp_route_refresh_header->subtype)),
GET_U_1(bgp_route_refresh_header->subtype));
+ /* ORF */
+ if (len >= BGP_ROUTE_REFRESH_SIZE_ORF) {
+ const struct bgp_route_refresh_orf *orf_header;
+
+ orf_header =
+ (const struct bgp_route_refresh_orf *)(pptr + BGP_ROUTE_REFRESH_SIZE);
+
+ ND_PRINT("\n\t ORF refresh %s (%u), ORF type %s (%u), ORF length %u",
+ tok2str(bgp_orf_refresh_type, "Unknown",
+ GET_U_1(orf_header->refresh)),
+ GET_U_1(orf_header->refresh),
+ tok2str(bgp_orf_type, "Unknown", GET_U_1(orf_header->type)),
+ GET_U_1(orf_header->type), GET_BE_U_2(orf_header->len));
+ }
+
if (ndo->ndo_vflag > 1) {
ND_TCHECK_LEN(pptr, len);
print_unknown_data(ndo, pptr, "\n\t ", len);
projects / tcpdump / blobdiff