From Thomas M. Knoll:
Added a new dissector for BGP QoS Marking extended community attributes as defined in http://tools.ietf.org/id/draft-knoll-idr-qos-attribute. svn path=/trunk/; revision=27206
This commit is contained in:
Jaap Keuter
parent
48736378a0
commit
fa9fc03b4f
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@ -35,6 +35,7 @@
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* draft-ietf-idr-as4bytes-06
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* draft-ietf-idr-dynamic-cap-03
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* draft-ietf-idr-bgp-ext-communities-05
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* draft-knoll-idr-qos-attribute-03
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*
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* TODO:
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* Destination Preference Attribute for BGP (work in progress)
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@ -185,6 +186,12 @@ static const value_string bgpattr_type[] = {
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{ 0, NULL }
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};
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static const value_string bgpext_com8_type[] = {
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{ BGP_EXT_COM_QOS_MARK_T, "QoS Marking - transitive" },
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{ BGP_EXT_COM_QOS_MARK_NT, "QoS Marking - non-transitive" },
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{ 0, NULL }
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};
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static const value_string bgpext_com_type[] = {
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{ BGP_EXT_COM_RT_0, "Route Target" },
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{ BGP_EXT_COM_RT_1, "Route Target" },
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@ -200,6 +207,17 @@ static const value_string bgpext_com_type[] = {
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{ 0, NULL }
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};
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static const value_string qos_tech_type[] = {
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{ QOS_TECH_TYPE_DSCP, "DiffServ enabled IP (DSCP encoding)" },
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{ QOS_TECH_TYPE_802_1q, "Ethernet using 802.1q priority tag" },
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{ QOS_TECH_TYPE_E_LSP, "MPLS using E-LSP" },
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{ QOS_TECH_TYPE_VC, "Virtual Channel (VC) encoding" },
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{ QOS_TECH_TYPE_GMPLS_TIME, "GMPLS - time slot encoding" },
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{ QOS_TECH_TYPE_GMPLS_LAMBDA, "GMPLS - lambda encoding" },
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{ QOS_TECH_TYPE_GMPLS_FIBRE, "GMPLS - fibre encoding" },
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{ 0, NULL }
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};
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static const value_string bgp_ssa_type[] = {
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{ BGP_SSA_L2TPv3 , "L2TPv3 Tunnel" },
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{ BGP_SSA_mGRE , "mGRE Tunnel" },
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@ -366,7 +384,8 @@ static gint ett_bgp_communities = -1;
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static gint ett_bgp_cluster_list = -1; /* cluster list tree */
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static gint ett_bgp_options = -1; /* optional parameters tree */
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static gint ett_bgp_option = -1; /* an optional parameter tree */
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static gint ett_bgp_extended_communities = -1 ; /* extended communities list tree */
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static gint ett_bgp_extended_communities = -1; /* extended communities list tree */
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static gint ett_bgp_ext_com_flags = -1; /* extended communities flags tree */
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static gint ett_bgp_ssa = -1; /* safi specific attribute */
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static gint ett_bgp_ssa_subtree = -1; /* safi specific attribute Subtrees */
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static gint ett_bgp_orf = -1; /* orf (outbound route filter) tree */
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@ -1436,7 +1455,10 @@ dissect_bgp_update(tvbuff_t *tvb, proto_tree *tree)
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gint o; /* packet offset */
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gint q; /* tmp */
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gint end; /* message end */
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guint16 ext_com; /* EXTENDED COMMUNITY type */
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guint16 ext_com; /* EXTENDED COMMUNITY extended length type */
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guint8 ext_com8; /* EXTENDED COMMUNITY regular type */
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gboolean is_regular_type; /* flag for regular types */
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gboolean is_extended_type; /* flag for extended types */
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guint16 len; /* tmp */
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int advance; /* tmp */
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proto_item *ti; /* tree item */
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@ -1444,6 +1466,7 @@ dissect_bgp_update(tvbuff_t *tvb, proto_tree *tree)
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proto_tree *subtree2; /* subtree for attributes */
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proto_tree *subtree3; /* subtree for attributes */
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proto_tree *subtree4; /* subtree for attributes */
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proto_tree *subtree5; /* subtree for attributes */
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proto_tree *as_paths_tree; /* subtree for AS_PATHs */
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proto_tree *as_path_tree; /* subtree for AS_PATH */
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proto_tree *as_path_segment_tree; /* subtree for AS_PATH segments */
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@ -2242,84 +2265,135 @@ dissect_bgp_update(tvbuff_t *tvb, proto_tree *tree)
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subtree3 = proto_item_add_subtree(ti,ett_bgp_extended_communities);
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while (q < end) {
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ext_com = tvb_get_ntohs(tvb,q);
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ext_com8 = tvb_get_guint8(tvb,q); /* handle regular types (8 bit) */
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ext_com = tvb_get_ntohs(tvb,q); /* handle extended length types (16 bit) */
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junk_gbuf[0]=0;
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junk_gbuf_ptr=junk_gbuf;
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), "%s",
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val_to_str(ext_com,bgpext_com_type,"Unknown"));
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switch (ext_com) {
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case BGP_EXT_COM_RT_0:
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case BGP_EXT_COM_RT_2:
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case BGP_EXT_COM_RO_0:
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case BGP_EXT_COM_RO_2:
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ": %u%s%d",
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tvb_get_ntohs(tvb,q+2),":",tvb_get_ntohl(tvb,q+4));
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break ;
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case BGP_EXT_COM_RT_1:
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case BGP_EXT_COM_RO_1:
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ipaddr = tvb_get_ipv4(tvb,q+2);
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ": %s%s%u",
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ip_to_str((guint8 *)&ipaddr),":",tvb_get_ntohs(tvb,q+6));
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break;
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case BGP_EXT_COM_VPN_ORIGIN:
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case BGP_EXT_COM_OSPF_RID:
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ipaddr = tvb_get_ipv4(tvb,q+2);
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ": %s", ip_to_str((guint8 *)&ipaddr));
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break;
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case BGP_EXT_COM_OSPF_RTYPE:
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ipaddr = tvb_get_ipv4(tvb,q+2);
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ": Area: %s, Type: %s", ip_to_str((guint8 *)&ipaddr),
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val_to_str(tvb_get_guint8(tvb,q+6),bgpext_ospf_rtype,"Unknown"));
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/* print OSPF Metric type if selected */
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/* always print E2 even if not external route -- receiving router should ignore */
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if ( (tvb_get_guint8(tvb,q+7)) & BGP_OSPF_RTYPE_METRIC_TYPE ) {
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), " E2");
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} else if ((tvb_get_guint8(tvb,q+6)==BGP_OSPF_RTYPE_EXT) || (tvb_get_guint8(tvb,q+6)==BGP_OSPF_RTYPE_NSSA)) {
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), " E1");
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} else {
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ", no options");
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}
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break;
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case BGP_EXT_COM_LINKBAND:
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linkband = tvb_get_ntohieee_float(tvb,q+2);
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ": %.3f Mbps",
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linkband*8/1000000);
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break;
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case BGP_EXT_COM_L2INFO:
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf),
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": %s, Control Flags: %s%s%s%s%s, MTU: %u byte%s",
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val_to_str(tvb_get_guint8(tvb,q+2),bgp_l2vpn_encaps,"Unknown"),
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tvb_get_guint8(tvb,q+3) ? "" : "none",
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tvb_get_ntohs(tvb,q+3)&0x08 ? "Q" : "",
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tvb_get_ntohs(tvb,q+3)&0x04 ? "F" : "",
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tvb_get_ntohs(tvb,q+3)&0x02 ? "C" : "",
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tvb_get_ntohs(tvb,q+3)&0x01 ? "S" : "",
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tvb_get_ntohs(tvb,q+4),
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plurality(tvb_get_ntohs(tvb,q+4), "", "s"));
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ti = proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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val_to_str(ext_com8,bgpext_com8_type,"Unknown"));
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is_regular_type = FALSE;
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is_extended_type = FALSE;
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/* handle regular types (8 bit) */
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switch (ext_com8) {
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case BGP_EXT_COM_QOS_MARK_T:
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case BGP_EXT_COM_QOS_MARK_NT:
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is_regular_type = TRUE;
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ti = proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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subtree4 = proto_item_add_subtree(ti,ett_bgp_extended_communities) ;
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proto_tree_add_text(subtree4,tvb,q+2,1, "Encapsulation: %s",
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val_to_str(tvb_get_guint8(tvb,q+2),bgp_l2vpn_encaps,"Unknown"));
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proto_tree_add_text(subtree4,tvb,q+3,1, "Control Flags: %s%sControl Word %s required, Sequenced delivery %s required",
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tvb_get_ntohs(tvb,q+3)&0x08 ? "Q flag (Reserved) set" : "",
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tvb_get_ntohs(tvb,q+3)&0x04 ? "F flag (reserved) set" : "",
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tvb_get_ntohs(tvb,q+3)&0x02 ? "is" : "not",
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tvb_get_ntohs(tvb,q+3)&0x01 ? "is" : "not");
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proto_tree_add_text(subtree4,tvb,q+4,2, "MTU: %u byte%s",
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tvb_get_ntohs(tvb,q+4),
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plurality(tvb_get_ntohs(tvb,q+4), "", "s"));
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break;
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default:
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break ;
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subtree4 = proto_item_add_subtree(ti,ett_bgp_extended_communities);
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ti = proto_tree_add_text(subtree4, tvb, q, 1,
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"Type: 0x%02x", tvb_get_guint8(tvb,q));
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ti = proto_tree_add_text(subtree4, tvb, q+1, 1,
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"Flags: 0x%02x", tvb_get_guint8(tvb,q+1));
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subtree5 = proto_item_add_subtree(ti,ett_bgp_ext_com_flags);
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/* add flag bitfield */
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ti = proto_tree_add_text(subtree5, tvb, q+1, 1, "%s", decode_boolean_bitfield(tvb_get_guint8(tvb,q+1),
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0x10, 8, "Remarking", "No Remarking"));
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ti = proto_tree_add_text(subtree5, tvb, q+1, 1, "%s", decode_boolean_bitfield(tvb_get_guint8(tvb,q+1),
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0x08, 8, "Ignored marking", "No Ignored marking"));
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ti = proto_tree_add_text(subtree5, tvb, q+1, 1, "%s", decode_boolean_bitfield(tvb_get_guint8(tvb,q+1),
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0x04, 8, "Aggregation of markings", "No Aggregation of markings"));
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ti = proto_tree_add_text(subtree4, tvb, q+2, 1,
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"QoS Set Number: 0x%02x", tvb_get_guint8(tvb,q+2));
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ti = proto_tree_add_text(subtree4, tvb, q+3, 1,
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"Technology Type: 0x%02x (%s)", tvb_get_guint8(tvb,q+3),
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val_to_str(tvb_get_guint8(tvb,q+3),qos_tech_type,"Unknown"));
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ti = proto_tree_add_text(subtree4, tvb, q+4, 2,
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"QoS Marking O (16 bit): %s", decode_numeric_bitfield(tvb_get_guint8(tvb,q+4),
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0xffff, 16, "0x%04x"));
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ti = proto_tree_add_text(subtree4, tvb, q+6, 1,
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"QoS Marking A (8 bit): %s (decimal %d)", decode_numeric_bitfield(tvb_get_guint8(tvb,q+6),
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0xff, 8, "0x%02x"), tvb_get_guint8(tvb,q+6));
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ti = proto_tree_add_text(subtree4, tvb, q+7, 1,
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"Processing Count: 0x%02x", tvb_get_guint8(tvb,q+7));
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break;
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}
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q = q + 8 ;
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if (!is_regular_type) {
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), "%s",
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val_to_str(ext_com,bgpext_com_type,"Unknown"));
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/* handle extended length types (16 bit) */
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switch (ext_com) {
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case BGP_EXT_COM_RT_0:
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case BGP_EXT_COM_RT_2:
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case BGP_EXT_COM_RO_0:
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case BGP_EXT_COM_RO_2:
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is_extended_type = TRUE;
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ": %u%s%d",
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tvb_get_ntohs(tvb,q+2),":",tvb_get_ntohl(tvb,q+4));
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break ;
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case BGP_EXT_COM_RT_1:
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case BGP_EXT_COM_RO_1:
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is_extended_type = TRUE;
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ipaddr = tvb_get_ipv4(tvb,q+2);
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ": %s%s%u",
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ip_to_str((guint8 *)&ipaddr),":",tvb_get_ntohs(tvb,q+6));
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break;
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case BGP_EXT_COM_VPN_ORIGIN:
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case BGP_EXT_COM_OSPF_RID:
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is_extended_type = TRUE;
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ipaddr = tvb_get_ipv4(tvb,q+2);
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ": %s", ip_to_str((guint8 *)&ipaddr));
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break;
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case BGP_EXT_COM_OSPF_RTYPE:
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is_extended_type = TRUE;
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ipaddr = tvb_get_ipv4(tvb,q+2);
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ": Area: %s, Type: %s", ip_to_str((guint8 *)&ipaddr),
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val_to_str(tvb_get_guint8(tvb,q+6),bgpext_ospf_rtype,"Unknown"));
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/* print OSPF Metric type if selected */
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/* always print E2 even if not external route -- receiving router should ignore */
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if ( (tvb_get_guint8(tvb,q+7)) & BGP_OSPF_RTYPE_METRIC_TYPE ) {
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), " E2");
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} else if ((tvb_get_guint8(tvb,q+6)==BGP_OSPF_RTYPE_EXT) || (tvb_get_guint8(tvb,q+6)==BGP_OSPF_RTYPE_NSSA)) {
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), " E1");
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} else {
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ", no options");
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}
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break;
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case BGP_EXT_COM_LINKBAND:
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is_extended_type = TRUE;
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linkband = tvb_get_ntohieee_float(tvb,q+2);
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf), ": %.3f Mbps",
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linkband*8/1000000);
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proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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break;
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case BGP_EXT_COM_L2INFO:
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is_extended_type = TRUE;
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junk_gbuf_ptr += g_snprintf(junk_gbuf_ptr, MAX_STR_LEN-(junk_gbuf_ptr-junk_gbuf),
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": %s, Control Flags: %s%s%s%s%s, MTU: %u byte%s",
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val_to_str(tvb_get_guint8(tvb,q+2),bgp_l2vpn_encaps,"Unknown"),
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tvb_get_guint8(tvb,q+3) ? "" : "none",
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tvb_get_ntohs(tvb,q+3)&0x08 ? "Q" : "",
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tvb_get_ntohs(tvb,q+3)&0x04 ? "F" : "",
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tvb_get_ntohs(tvb,q+3)&0x02 ? "C" : "",
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tvb_get_ntohs(tvb,q+3)&0x01 ? "S" : "",
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tvb_get_ntohs(tvb,q+4),
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plurality(tvb_get_ntohs(tvb,q+4), "", "s"));
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ti = proto_tree_add_text(subtree3,tvb,q,8, "%s",junk_gbuf);
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subtree4 = proto_item_add_subtree(ti,ett_bgp_extended_communities);
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proto_tree_add_text(subtree4,tvb,q+2,1, "Encapsulation: %s",
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val_to_str(tvb_get_guint8(tvb,q+2),bgp_l2vpn_encaps,"Unknown"));
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proto_tree_add_text(subtree4,tvb,q+3,1, "Control Flags: %s%sControl Word %s required, Sequenced delivery %s required",
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tvb_get_ntohs(tvb,q+3)&0x08 ? "Q flag (Reserved) set" : "",
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tvb_get_ntohs(tvb,q+3)&0x04 ? "F flag (reserved) set" : "",
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tvb_get_ntohs(tvb,q+3)&0x02 ? "is" : "not",
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tvb_get_ntohs(tvb,q+3)&0x01 ? "is" : "not");
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proto_tree_add_text(subtree4,tvb,q+4,2, "MTU: %u byte%s",
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tvb_get_ntohs(tvb,q+4),
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plurality(tvb_get_ntohs(tvb,q+4), "", "s"));
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break;
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}
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}
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if (!is_regular_type && !is_extended_type)
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proto_tree_add_text(subtree3,tvb,q,8, "%s","Unknown");
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q = q + 8;
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}
|
||||
}
|
||||
break;
|
||||
|
|
@ -3030,6 +3104,7 @@ proto_register_bgp(void)
|
|||
&ett_bgp_options,
|
||||
&ett_bgp_option,
|
||||
&ett_bgp_extended_communities,
|
||||
&ett_bgp_ext_com_flags,
|
||||
&ett_bgp_ssa,
|
||||
&ett_bgp_ssa_subtree,
|
||||
&ett_bgp_orf,
|
||||
|
|
|
|||
|
|
@ -165,6 +165,12 @@ struct bgp_attr {
|
|||
#define BGPTYPE_SAFI_SPECIFIC_ATTR 19 /* draft-kapoor-nalawade-idr-bgp-ssa-00.txt */
|
||||
|
||||
/* Extended community type */
|
||||
/* according to IANA's number assignment at: http://www.iana.org/assignments/bgp-extended-communities */
|
||||
#define BGP_EXT_COM_QOS_MARK_T 0x04 /* QoS Marking transitive attribute of regular type (8bit) */
|
||||
#define BGP_EXT_COM_QOS_MARK_NT 0x44 /* QoS Marking non-transitive attribute of regular type (8bit) */
|
||||
/* Format Type(1byte):Flags(1byte):QoS Set(1byte):Tec. Type(1byte): */
|
||||
/* Marking O(2bytes):Marking A(1byte):Proc.Cnt(1byte) */
|
||||
|
||||
/* draft-ietf-idr-bgp-ext-communities */
|
||||
#define BGP_EXT_COM_RT_0 0x0002 /* Route Target,Format AS(2bytes):AN(4bytes) */
|
||||
#define BGP_EXT_COM_RT_1 0x0102 /* Route Target,Format IP address:AN(2bytes) */
|
||||
|
|
@ -180,6 +186,16 @@ struct bgp_attr {
|
|||
#define BGP_EXT_COM_OSPF_RID 0x8001 /* OSPF Router ID,Format RouterID(4B):Unused(2B) */
|
||||
#define BGP_EXT_COM_L2INFO 0x800a /* draft-kompella-ppvpn-l2vpn */
|
||||
|
||||
/* Extended community QoS Marking technology type */
|
||||
#define QOS_TECH_TYPE_DSCP 0x00 /* DiffServ enabled IP (DSCP encoding) */
|
||||
#define QOS_TECH_TYPE_802_1q 0x01 /* Ethernet using 802.1q priority tag */
|
||||
#define QOS_TECH_TYPE_E_LSP 0x02 /* MPLS using E-LSP */
|
||||
#define QOS_TECH_TYPE_VC 0x03 /* Virtual Channel (VC) encoding using separate channels for */
|
||||
/* QoS forwarding / one channel per class (e.g. ATM VCs, FR */
|
||||
/* VCs, MPLS L-LSPs) */
|
||||
#define QOS_TECH_TYPE_GMPLS_TIME 0x04 /* GMPLS - time slot encoding */
|
||||
#define QOS_TECH_TYPE_GMPLS_LAMBDA 0x05 /* GMPLS - lambda encoding */
|
||||
#define QOS_TECH_TYPE_GMPLS_FIBRE 0x06 /* GMPLS - fibre encoding */
|
||||
|
||||
/* OSPF codes for BGP_EXT_COM_OSPF_RTYPE draft-rosen-vpns-ospf-bgp-mpls */
|
||||
#define BGP_OSPF_RTYPE_RTR 1 /* OSPF Router LSA */
|
||||
|
|
|
|||
Loading…
Reference in New Issue