/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009, 2010 Daniel Borkmann.
 * Copyright 2014 Tobias Klauser
 * Subject to the GPL, version 2.
 */

#include <stdio.h>
#include <stdint.h>
#include <netinet/in.h>
#include <linux/if_ether.h>

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

static inline bool is_multicast_ether_addr(const uint8_t *mac)
{
	return mac[0] & 0x01;
}

static inline bool is_broadcast_ether_addr(const uint8_t *mac)
{
	return (mac[0] & mac[1] & mac[2] & mac[3] & mac[4] & mac[5]) == 0xff;
}

static const char *ether_lookup_addr(uint8_t *mac)
{
	if (is_multicast_ether_addr(mac)) {
		if (is_broadcast_ether_addr(mac))
			return "Broadcast";
		else
			return "Multicast";
	}

	/* found no matching address, so look up the vendor from OUI */
	return lookup_vendor_str((mac[0] << 16) | (mac[1] << 8) | mac[2]);
}

static void ethernet(struct pkt_buff *pkt)
{
	char *type;
	uint8_t *src_mac, *dst_mac;
	struct ethhdr *eth = (struct ethhdr *) pkt_pull(pkt, sizeof(*eth));

	if (eth == NULL)
		return;

	src_mac = eth->h_source;
	dst_mac = eth->h_dest;

	tprintf(" [ Eth ");
	tprintf("MAC (%.2x:%.2x:%.2x:%.2x:%.2x:%.2x => ",
		src_mac[0], src_mac[1], src_mac[2],
		src_mac[3], src_mac[4], src_mac[5]);
	tprintf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x), ",
		dst_mac[0], dst_mac[1], dst_mac[2],
		dst_mac[3], dst_mac[4], dst_mac[5]);
	tprintf("Proto (0x%.4x", ntohs(eth->h_proto));

	type = lookup_ether_type(ntohs(eth->h_proto));
	if (type)
		tprintf(", %s%s%s", colorize_start(bold), type, colorize_end());

	tprintf(") ]\n");
	tprintf(" [ Vendor ");
	tprintf("(%s => %s)", ether_lookup_addr(src_mac), ether_lookup_addr(dst_mac));
	tprintf(" ]\n");

	pkt_set_proto(pkt, &eth_lay2, ntohs(eth->h_proto));
}

static void ethernet_less(struct pkt_buff *pkt)
{
	uint8_t *src_mac, *dst_mac;
	struct ethhdr *eth = (struct ethhdr *) pkt_pull(pkt, sizeof(*eth));

	if (eth == NULL)
		return;

	src_mac = eth->h_source;
	dst_mac = eth->h_dest;
	tprintf(" %s => %s ", 
		lookup_vendor_str((src_mac[0] << 16) | (src_mac[1] << 8) |
			      src_mac[2]),
		lookup_vendor_str((dst_mac[0] << 16) | (dst_mac[1] << 8) |
			      dst_mac[2]));
	tprintf("%s%s%s", colorize_start(bold), 
		lookup_ether_type(ntohs(eth->h_proto)), colorize_end());

	pkt_set_proto(pkt, &eth_lay2, ntohs(eth->h_proto));
}

struct protocol ethernet_ops = {
	.key = 0,
	.print_full = ethernet,
	.print_less = ethernet_less,
};
ue='range'>range</option>
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</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=8dd1fe1594a712eb326e1607c694fbd1baf85f4b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=8dd1fe1594a712eb326e1607c694fbd1baf85f4b'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/i2c?id=8dd1fe1594a712eb326e1607c694fbd1baf85f4b'>i2c</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/i2c/i2c-core.c?id=8dd1fe1594a712eb326e1607c694fbd1baf85f4b'>i2c-core.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='8dd1fe1594a712eb326e1607c694fbd1baf85f4b'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Bartosz Golaszewski &lt;bgolaszewski@baylibre.com&gt;</td><td class='right'>2016-09-16 18:02:42 +0200</td></tr>
<tr><th>committer</th><td>Wolfram Sang &lt;wsa@the-dreams.de&gt;</td><td class='right'>2016-09-24 10:48:18 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/i2c/i2c-core.c?id=8dd1fe1594a712eb326e1607c694fbd1baf85f4b'>8dd1fe1594a712eb326e1607c694fbd1baf85f4b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/i2c/i2c-core.c?id=8dd1fe1594a712eb326e1607c694fbd1baf85f4b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=8dd1fe1594a712eb326e1607c694fbd1baf85f4b'>2058f58e44b3ecd72aac347e308fbcffbbd77625</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/i2c/i2c-core.c?id=8dd1fe1594a712eb326e1607c694fbd1baf85f4b'>drivers/i2c/i2c-core.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/i2c/i2c-core.c?id=72cf8c565cf4e25312fb9fa65d306ae736104ade'>72cf8c565cf4e25312fb9fa65d306ae736104ade</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/i2c/i2c-core.c?id=8dd1fe1594a712eb326e1607c694fbd1baf85f4b&amp;id2=72cf8c565cf4e25312fb9fa65d306ae736104ade'>diff</a>)</td></tr></table>
<div class='commit-subject'>i2c: export i2c_adapter_depth()</div><div class='commit-msg'>For crazy setups in which an i2c gpio expander is behind an i2c gpio
multiplexer controlled by a gpio provided a second expander using the
same device driver we need to explicitly tell lockdep how to handle
nested locking.

Export i2c_adapter_depth() as public API to be reused outside of i2c
core code.

Signed-off-by: Bartosz Golaszewski &lt;bgolaszewski@baylibre.com&gt;
Acked-by: Peter Rosin &lt;peda@axentia.se&gt;
Acked-by: Peter Zijlstra (Intel) &lt;peterz@infradead.org&gt;
Signed-off-by: Wolfram Sang &lt;wsa@the-dreams.de&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=8dd1fe1594a712eb326e1607c694fbd1baf85f4b'>Diffstat</a> (limited to 'drivers/i2c/i2c-core.c')</div><table summary='diffstat' class='diffstat'>