forked from osmocom/wireshark
There can be more than one next hop network address in the
BGPTYPE_MP_REACH_NLRI stuff; dissect all of them. svn path=/trunk/; revision=3553
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packet-bgp.c
28
packet-bgp.c
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@ -2,7 +2,7 @@
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* Routines for BGP packet dissection.
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* Copyright 1999, Jun-ichiro itojun Hagino <itojun@itojun.org>
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*
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* $Id: packet-bgp.c,v 1.39 2001/06/15 07:36:31 guy Exp $
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* $Id: packet-bgp.c,v 1.40 2001/06/15 08:01:31 guy Exp $
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*
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* Supports:
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* RFC1771 A Border Gateway Protocol 4 (BGP-4)
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@ -212,6 +212,7 @@ static gint ett_bgp_unfeas = -1;
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static gint ett_bgp_attrs = -1;
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static gint ett_bgp_attr = -1;
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static gint ett_bgp_attr_flags = -1;
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static gint ett_bgp_mp_nhna = -1;
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static gint ett_bgp_mp_reach_nlri = -1;
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static gint ett_bgp_mp_unreach_nlri = -1;
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static gint ett_bgp_mp_snpa = -1;
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@ -745,6 +746,7 @@ dissect_bgp_update(tvbuff_t *tvb, int offset, proto_tree *tree)
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guint16 af;
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guint8 saf;
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int off, snpa;
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int nexthop_len;
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tvb_memcpy(tvb, (guint8 *)&bgpa, o + i, sizeof(bgpa));
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/* check for the Extended Length bit */
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@ -1292,16 +1294,23 @@ dissect_bgp_update(tvbuff_t *tvb, int offset, proto_tree *tree)
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"Subsequent address family identifier: %s (%u)",
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val_to_str(saf, bgpattr_nlri_safi, saf >= 128 ? "Vendor specific" : "Unknown"),
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saf);
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advance = tvb_get_guint8(tvb, o + i + aoff + 3);
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nexthop_len = tvb_get_guint8(tvb, o + i + aoff + 3);
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ti = proto_tree_add_text(subtree2, tvb, o + i + aoff + 3, 1,
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"Next hop network address (%d %s)",
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advance, (advance == 1) ? "byte" : "bytes");
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advance = mp_addr_to_str(af, saf, tvb, o + i + aoff + 4, junk_buf, sizeof(junk_buf)) ;
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proto_tree_add_text(subtree2, tvb,o + i + aoff + 4, advance,
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"Next hop: %s (%u)", junk_buf, advance);
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alen -= advance + 4;
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aoff += advance + 4 ;
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nexthop_len, plurality(nexthop_len, "byte", "bytes"));
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subtree3 = proto_item_add_subtree(ti, ett_bgp_mp_nhna);
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j = 0;
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while (j < nexthop_len) {
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advance = mp_addr_to_str(af, saf, tvb, o + i + aoff + 4 + j,
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junk_buf, sizeof(junk_buf)) ;
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if (j + advance > nexthop_len)
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break;
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proto_tree_add_text(subtree3, tvb,o + i + aoff + 4 + j,
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advance, "Next hop: %s (%u)", junk_buf, advance);
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j += advance;
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}
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alen -= nexthop_len + 4;
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aoff += nexthop_len + 4 ;
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off = 0;
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snpa = tvb_get_guint8(tvb, o + i + aoff);
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@ -1701,6 +1710,7 @@ proto_register_bgp(void)
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&ett_bgp_attrs,
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&ett_bgp_attr,
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&ett_bgp_attr_flags,
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&ett_bgp_mp_nhna,
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&ett_bgp_mp_reach_nlri,
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&ett_bgp_mp_unreach_nlri,
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&ett_bgp_mp_snpa,
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