/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009, 2010 Daniel Borkmann.
 * Copyright 2010 Emmanuel Roullit.
 * Subject to the GPL, version 2.
 */

#include <stdio.h>
#include <stdint.h>
#include <netinet/in.h>    /* for ntohs() */

#include "proto.h"
#include "dissector_eth.h"
#include "pkt_buff.h"

struct vlanhdr {
	uint16_t h_vlan_TCI;
	uint16_t h_vlan_encapsulated_proto;
} __attribute__((packed));

static void vlan(struct pkt_buff *pkt)
{
	uint16_t tci;
	struct vlanhdr *vlan = (struct vlanhdr *) pkt_pull(pkt, sizeof(*vlan));

	if (vlan == NULL)
		return;

	tci = ntohs(vlan->h_vlan_TCI);

	tprintf(" [ VLAN ");
	tprintf("Prio (%d), ", (tci & 0xE000) >> 13);
	tprintf("CFI (%d), ", (tci & 0x1000) >> 12);
	tprintf("ID (%d), ", (tci & 0x0FFF));
	tprintf("Proto (0x%.4x)", ntohs(vlan->h_vlan_encapsulated_proto));
	tprintf(" ]\n");

	pkt_set_proto(pkt, &eth_lay2, ntohs(vlan->h_vlan_encapsulated_proto));
}

static void vlan_less(struct pkt_buff *pkt)
{
	uint16_t tci;
	struct vlanhdr *vlan = (struct vlanhdr *) pkt_pull(pkt, sizeof(*vlan));

	if (vlan == NULL)
		return;

	tci = ntohs(vlan->h_vlan_TCI);

	tprintf(" VLAN%d", (tci & 0x0FFF));

	pkt_set_proto(pkt, &eth_lay2, ntohs(vlan->h_vlan_encapsulated_proto));
}

struct protocol vlan_ops = {
	.key = 0x8100,
	.print_full = vlan,
	.print_less = vlan_less,
};
type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/?h=nds-private-remove'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?h=nds-private-remove&amp;id=303223092081963513494b4377fa1ac9e362ed4b'>refs</a><a class='active' href='/cgit.cgi/linux/net-next.git/log/net/kcm/Kconfig?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/net/kcm/Kconfig?h=nds-private-remove&amp;id=303223092081963513494b4377fa1ac9e362ed4b'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/net/kcm/Kconfig?h=nds-private-remove&amp;id=303223092081963513494b4377fa1ac9e362ed4b'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/kcm/Kconfig?h=nds-private-remove&amp;id=303223092081963513494b4377fa1ac9e362ed4b'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/kcm/Kconfig'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='303223092081963513494b4377fa1ac9e362ed4b'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=303223092081963513494b4377fa1ac9e362ed4b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=303223092081963513494b4377fa1ac9e362ed4b'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/kcm?h=nds-private-remove&amp;id=303223092081963513494b4377fa1ac9e362ed4b'>kcm</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/kcm/Kconfig?h=nds-private-remove&amp;id=303223092081963513494b4377fa1ac9e362ed4b'>Kconfig</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/kcm/Kconfig?h=nds-private-remove&amp;id=303223092081963513494b4377fa1ac9e362ed4b&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>