/*
 * 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"

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 inline bool is_local_ether_addr(const u8 *mac)
{
	return 0x02 & mac[0];
}

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

	/* 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)
{
	const 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_dissector(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 ", ether_lookup_addr(src_mac),
		ether_lookup_addr(dst_mac));
	tprintf("%s%s%s", colorize_start(bold),
		lookup_ether_type(ntohs(eth->h_proto)), colorize_end());

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

struct protocol ethernet_ops = {
	.key = 0,
	.print_full = ethernet,
	.print_less = ethernet_less,
};
'q' value=''/>
<input type='submit' value='search'/>
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</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=49521de119d326d04fb3736ab827e12e1de966d0'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/fs?id=49521de119d326d04fb3736ab827e12e1de966d0'>fs</a>/<a href='/cgit.cgi/linux/net-next.git/commit/fs/udf?id=49521de119d326d04fb3736ab827e12e1de966d0'>udf</a>/<a href='/cgit.cgi/linux/net-next.git/commit/fs/udf/udfdecl.h?id=49521de119d326d04fb3736ab827e12e1de966d0'>udfdecl.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='49521de119d326d04fb3736ab827e12e1de966d0'/><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>Jan Kara &lt;jack@suse.cz&gt;</td><td class='right'>2010-10-20 17:42:44 +0200</td></tr>
<tr><th>committer</th><td>Jan Kara &lt;jack@suse.cz&gt;</td><td class='right'>2011-01-06 17:03:54 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/fs/udf/udfdecl.h?id=49521de119d326d04fb3736ab827e12e1de966d0'>49521de119d326d04fb3736ab827e12e1de966d0</a> (<a href='/cgit.cgi/linux/net-next.git/patch/fs/udf/udfdecl.h?id=49521de119d326d04fb3736ab827e12e1de966d0'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=49521de119d326d04fb3736ab827e12e1de966d0'>a57de8b903d2f6b43b8ec689b617ba2dc333e98e</a> /<a href='/cgit.cgi/linux/net-next.git/tree/fs/udf/udfdecl.h?id=49521de119d326d04fb3736ab827e12e1de966d0'>fs/udf/udfdecl.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/fs/udf/udfdecl.h?id=f2a6cc1f146465e13f31d9163d542d1facf4e203'>f2a6cc1f146465e13f31d9163d542d1facf4e203</a> (<a href='/cgit.cgi/linux/net-next.git/diff/fs/udf/udfdecl.h?id=49521de119d326d04fb3736ab827e12e1de966d0&amp;id2=f2a6cc1f146465e13f31d9163d542d1facf4e203'>diff</a>)</td></tr></table>
<div class='commit-subject'>udf: Remove BKL from udf_update_inode</div><div class='commit-msg'>udf_update_inode() does not need BKL since on-disk inode modifications are
protected by the buffer lock and reading of values of in-memory inode is
safe without any lock. In some cases we can write inconsistent inode state
to disk but in that case inode will be marked dirty and overwritten later.

Also make unnecessarily global udf_sync_inode() static.

Signed-off-by: Jan Kara &lt;jack@suse.cz&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=49521de119d326d04fb3736ab827e12e1de966d0'>Diffstat</a> (limited to 'fs/udf/udfdecl.h')</div><table summary='diffstat' class='diffstat'>