Wireshark-dev: [Wireshark-dev] [PATCH] ICMPv6
From: Nicolas DICHTEL <nicolas.dichtel@xxxxxxxxx>
Date: Thu, 02 Nov 2006 17:33:26 +0100
Hello,here is a patch that transforms "valid lifetime" and "prefered lifetime" in a prefix option (in RA) in human readable format. Following the RFC2461 Section 4.6.2, if the value is 0xffffffff, this means lifetime
is infinity. Regards, Nicolas
--- wireshark-0.99.4-SVN-19424-orig/epan/dissectors/packet-icmpv6.c 2006-10-04 09:32:25.000000000 +0200 +++ wireshark-0.99.4-SVN-19424/epan/dissectors/packet-icmpv6.c 2006-10-31 12:31:40.000000000 +0100 @@ -8,6 +8,7 @@ * Copyright 1998 Gerald Combs * * MobileIPv6 support added by Tomislav Borosa <tomislav.borosa@xxxxxxxxxx> + * Copyright 2006, Nicolas DICHTEL - 6WIND - <nicolas.dichtel@xxxxxxxxx> * * HMIPv6 support added by Martti Kuparinen <martti.kuparinen@xxxxxx> * @@ -315,14 +316,24 @@ again: decode_boolean_bitfield(pi->nd_opt_pi_flags_reserved, ND_OPT_PI_FLAG_SITEPREF, 8, "Site prefix", "Not site prefix")); - proto_tree_add_text(icmp6opt_tree, tvb, - offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_valid_time), - 4, "Valid lifetime: 0x%08x", - pntohl(&pi->nd_opt_pi_valid_time)); - proto_tree_add_text(icmp6opt_tree, tvb, - offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_preferred_time), - 4, "Preferred lifetime: 0x%08x", - pntohl(&pi->nd_opt_pi_preferred_time)); + if (pntohl(&pi->nd_opt_pi_valid_time) == 0xffffffff) + proto_tree_add_text(icmp6opt_tree, tvb, + offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_valid_time), + 4, "Valid lifetime: infinity"); + else + proto_tree_add_text(icmp6opt_tree, tvb, + offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_valid_time), + 4, "Valid lifetime: %u", + pntohl(&pi->nd_opt_pi_valid_time)); + if (pntohl(&pi->nd_opt_pi_preferred_time) == 0xffffffff) + proto_tree_add_text(icmp6opt_tree, tvb, + offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_preferred_time), + 4, "Preferred lifetime: infinity"); + else + proto_tree_add_text(icmp6opt_tree, tvb, + offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_preferred_time), + 4, "Preferred lifetime: %u", + pntohl(&pi->nd_opt_pi_preferred_time)); proto_tree_add_text(icmp6opt_tree, tvb, offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_prefix), 16, "Prefix: %s", ip6_to_str(&pi->nd_opt_pi_prefix));
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