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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2015 Joyent, Inc. All rights reserved.
*/
/*
* Decode VXLAN encapsulated packets.
*/
#include <sys/vxlan.h>
#include "snoop.h"
extern interpreter_fn_t interpret_ether;
int
interpret_vxlan(int flags, char *data, int fraglen)
{
vxlan_hdr_t *vxlan = (vxlan_hdr_t *)data;
uint32_t id, vxf;
if (fraglen < sizeof (vxlan_hdr_t)) {
if (flags & F_SUM)
(void) snprintf(get_sum_line(), MAXLINE,
"VXLAN RUNT");
if (flags & F_DTAIL)
show_header("VXLAN RUNT: ", "Short packet", fraglen);
return (fraglen);
}
id = ntohl(vxlan->vxlan_id) >> VXLAN_ID_SHIFT;
vxf = ntohl(vxlan->vxlan_flags);
if (flags & F_SUM) {
(void) snprintf(get_sum_line(), MAXLINE,
"VXLAN VNI=%d", id);
}
if (flags & F_DTAIL) {
show_header("VXLAN: ", "VXLAN Header", sizeof (vxlan_hdr_t));
show_space();
(void) snprintf(get_line(0, 0), get_line_remain(),
"Flags = 0x%08x", vxf);
(void) snprintf(get_line(0, 0), get_line_remain(), " %s",
getflag(vxf >> 24, VXLAN_F_VDI >> 24, "vni present",
"vni missing"));
(void) snprintf(get_line(0, 0), get_line_remain(),
"VXLAN network id (VNI) = %d", id);
show_space();
}
if (flags & (F_DTAIL | F_ALLSUM)) {
fraglen -= sizeof (vxlan_hdr_t);
data += sizeof (vxlan_hdr_t);
return (interpret_ether(flags, data, fraglen, fraglen));
}
return (0);
}
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