diff options
Diffstat (limited to 'packet-ip.c')
| -rw-r--r-- | packet-ip.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/packet-ip.c b/packet-ip.c index b799a32db5..85f7d3b47a 100644 --- a/packet-ip.c +++ b/packet-ip.c @@ -1,7 +1,7 @@ /* packet-ip.c * Routines for IP and miscellaneous IP protocol packet disassembly * - * $Id: packet-ip.c,v 1.111 2000/12/13 02:43:32 guy Exp $ + * $Id: packet-ip.c,v 1.112 2000/12/13 16:38:20 ashokn Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs <gerald@zing.org> @@ -283,6 +283,7 @@ typedef struct _e_ip #define IPOLEN_RR_MIN 3 #define IPOLEN_SID 4 #define IPOLEN_SSRR_MIN 3 +#define IPOLEN_RA 4 #define IPSEC_UNCLASSIFIED 0x0000 #define IPSEC_CONFIDENTIAL 0xF135 @@ -515,6 +516,20 @@ dissect_ipopt_timestamp(const ip_tcp_opt *optp, tvbuff_t *tvb, } } +static void +dissect_ipopt_ra(const ip_tcp_opt *optp, tvbuff_t *tvb, int offset, + guint optlen, frame_data *fd, proto_tree *opt_tree) +{ + /* Router-Alert, as defined by RFC2113 */ + int opt = tvb_get_ntohs(tvb, offset + 2); + static const value_string ra_opts[] = { + {0, "Every router examines packet"} }; + + proto_tree_add_text(opt_tree, tvb, offset, optlen, + "%s: %s", optp->name, val_to_str(opt, ra_opts, "Unknown (%d)")); + return; +} + static const ip_tcp_opt ipopts[] = { { IPOPT_END, @@ -579,7 +594,15 @@ static const ip_tcp_opt ipopts[] = { VARIABLE_LENGTH, IPOLEN_TIMESTAMP_MIN, dissect_ipopt_timestamp - } + }, + { + IPOPT_RA, + "Router Alert", + NULL, + FIXED_LENGTH, + IPOLEN_RA, + dissect_ipopt_ra + }, }; #define N_IP_OPTS (sizeof ipopts / sizeof ipopts[0]) |