add support for Graceful OSPF Restart (rfc3623)

diff --git a/ospf.h b/ospf.h
index 17b8d778ed56f87b18d49104fb28e2e258fb8588..36d794b349de3bc7b5589c56b5b7564a594844bf 100644 (file)
--- a/ospf.h
+++ b/ospf.h
@@ -1,4 +1,4 @@
-/* @(#) $Header: /tcpdump/master/tcpdump/ospf.h,v 1.11 2003-10-22 17:08:46 hannes Exp $ (LBL) */
+/* @(#) $Header: /tcpdump/master/tcpdump/ospf.h,v 1.12 2004-01-08 22:08:40 hannes Exp $ (LBL) */
 /*
  * Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997
  *     The Regents of the University of California.  All rights reserved.
@@ -69,7 +69,7 @@
 #define        LS_TYPE_OPAQUE_DW      11   /* rfc2370 - Opaque Domain Wide */
 
 #define LS_OPAQUE_TYPE_TE       1   /* rfc3630 */
-#define LS_OPAQUE_TYPE_GRACE    3   /* draft-ietf-ospf-hitless-restart */
+#define LS_OPAQUE_TYPE_GRACE    3   /* rfc3623 */
 
 #define LS_OPAQUE_TE_TLV_ROUTER 1   /* rfc3630 */
 #define LS_OPAQUE_TE_TLV_LINK   2   /* rfc3630 */
@@ -91,6 +91,15 @@
 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP        1  /* rfc3630 */
 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA         2  /* rfc3630 */
 
+#define LS_OPAQUE_GRACE_TLV_PERIOD       1 /* rfc3623 */
+#define LS_OPAQUE_GRACE_TLV_REASON       2 /* rfc3623 */
+#define LS_OPAQUE_GRACE_TLV_INT_ADDRESS  3 /* rfc3623 */
+
+#define LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN     0 /* rfc3623 */
+#define LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART  1 /* rfc3623 */
+#define LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE  2 /* rfc3623 */
+#define LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH   3 /* rfc3623 */
+
 /*************************************************
  *
  * is the above a bug in the documentation?
@@ -198,6 +207,13 @@ struct lsa {
            u_int8_t data[1]; /* may repeat   */
        } un_te_lsa_tlv;
 
+        /* Grace LSA */
+        struct {
+           u_int16_t type;
+           u_int16_t length;
+           u_int8_t data[1]; /* may repeat   */
+       } un_grace_tlv;
+
         /* Unknown LSA */
         struct unknown {
            u_int8_t data[1]; /* may repeat   */

diff --git a/print-ospf.c b/print-ospf.c
index 998518c7c081036ade075d0a780fa13c34c476d3..17fbf743d5bea5b0127fe2c909728ebfd642fccd 100644 (file)
--- a/print-ospf.c
+++ b/print-ospf.c
@@ -23,7 +23,7 @@
 
 #ifndef lint
 static const char rcsid[] _U_ =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.48 2003-11-19 09:44:10 guy Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.49 2004-01-08 22:08:40 hannes Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -129,8 +129,20 @@ static struct tok lsa_opaque_te_link_tlv_subtlv_values[] = {
        { 0,                    NULL }
 };
 
-#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP        1  /* rfc3630 */
-#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA         2  /* rfc3630 */
+static struct tok lsa_opaque_grace_tlv_values[] = {
+       { LS_OPAQUE_GRACE_TLV_PERIOD,             "Grace Period" },
+       { LS_OPAQUE_GRACE_TLV_REASON,             "Graceful restart Reason" },
+       { LS_OPAQUE_GRACE_TLV_INT_ADDRESS,        "IPv4 interface address" },
+       { 0,                    NULL }
+};
+
+static struct tok lsa_opaque_grace_tlv_reason_values[] = {
+       { LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN,     "Unknown" },
+       { LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART,  "Software Restart" },
+       { LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE,  "Software Reload/Upgrade" },
+       { LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH,   "Control Processor Switch" },
+       { 0,                    NULL }
+};
 
 static struct tok lsa_opaque_te_tlv_link_type_sub_tlv_values[] = {
        { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP, "Point-to-point" },
@@ -412,6 +424,69 @@ ospf_print_lsa(register const struct lsa *lsap)
        case LS_TYPE_OPAQUE_DW:
 
            switch (*(&lsap->ls_hdr.un_lsa_id.opaque_field.opaque_type)) {
+            case LS_OPAQUE_TYPE_GRACE:
+               tptr = (u_int8_t *)(&lsap->lsa_un.un_grace_tlv.type);
+
+               while (ls_length != 0) {
+                    if (!TTEST2(*tptr, 4))
+                        goto trunc;
+                   if (ls_length < 4) {
+                        printf("\n\t    Remaining LS length %u < 4", ls_length);
+                        return(ls_end);
+                    }
+                    tlv_type = EXTRACT_16BITS(tptr);
+                    tlv_length = EXTRACT_16BITS(tptr+2);
+                    tptr+=4;
+                    ls_length-=4;
+                    
+                    printf("\n\t    %s TLV (%u), length: %u, value: ",
+                           tok2str(lsa_opaque_grace_tlv_values,"unknown",tlv_type),
+                           tlv_type,
+                           tlv_length);
+
+                    if (tlv_length > ls_length) {
+                        printf("\n\t    Bogus length %u > %u", tlv_length,
+                            ls_length);
+                        return(ls_end);
+                    }
+                    ls_length-=tlv_length;
+                    switch(tlv_type) {
+
+                    case LS_OPAQUE_GRACE_TLV_PERIOD:
+                        if (tlv_length != 4) {
+                            printf("\n\t    Bogus length %u != 4", tlv_length);
+                            return(ls_end);
+                        }
+                        printf("%us",EXTRACT_32BITS(tptr));
+                        break;
+                    case LS_OPAQUE_GRACE_TLV_REASON:
+                        if (tlv_length != 1) {
+                            printf("\n\t    Bogus length %u != 1", tlv_length);
+                            return(ls_end);
+                        }
+                        printf("%s (%u)",
+                               tok2str(lsa_opaque_grace_tlv_reason_values, "Unknown", *tptr),
+                               *tptr);
+                        break;
+                    case LS_OPAQUE_GRACE_TLV_INT_ADDRESS:
+                        if (tlv_length != 4) {
+                            printf("\n\t    Bogus length %u != 4", tlv_length);
+                            return(ls_end);
+                        }
+                        printf("%s", ipaddr_string(tptr));
+                        break;
+                    default:
+                        if (vflag <= 1) {
+                            if(!print_unknown_data(tptr,"\n\t      ",tlv_length))
+                                return(ls_end);
+                        }
+                        break;
+
+                    }
+                    tptr+=tlv_length;
+                }
+
+                break;
            case LS_OPAQUE_TYPE_TE:
                tptr = (u_int8_t *)(&lsap->lsa_un.un_te_lsa_tlv.type);