/*
 * 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,
};
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=79134d11d030b886106bf45a5638c1ccb1f0856c&amp;showmsg=1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound?id=79134d11d030b886106bf45a5638c1ccb1f0856c&amp;showmsg=1'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc?id=79134d11d030b886106bf45a5638c1ccb1f0856c&amp;showmsg=1'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/intel?id=79134d11d030b886106bf45a5638c1ccb1f0856c&amp;showmsg=1'>intel</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/intel/boards?id=79134d11d030b886106bf45a5638c1ccb1f0856c&amp;showmsg=1'>boards</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/intel/boards/haswell.c?id=79134d11d030b886106bf45a5638c1ccb1f0856c&amp;showmsg=1'>haswell.c</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/sound/soc/intel/boards/haswell.c?id=79134d11d030b886106bf45a5638c1ccb1f0856c'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
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lue='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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-25 14:30:04 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-25 14:30:04 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ipv6/xfrm6_input.c?id=3ddc76dfc786cc6f87852693227fb0b1f124f807'>3ddc76dfc786cc6f87852693227fb0b1f124f807</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/ipv6/xfrm6_input.c?id=3ddc76dfc786cc6f87852693227fb0b1f124f807'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3ddc76dfc786cc6f87852693227fb0b1f124f807'>8192b4721e05cf6823087f9696db8c0c8f144b02</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/ipv6/xfrm6_input.c?id=3ddc76dfc786cc6f87852693227fb0b1f124f807'>net/ipv6/xfrm6_input.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ipv6/xfrm6_input.c?id=b272f732f888d4cf43c943a40c9aaa836f9b7431'>b272f732f888d4cf43c943a40c9aaa836f9b7431</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ipv6/xfrm6_input.c?id=3ddc76dfc786cc6f87852693227fb0b1f124f807&amp;id2=b272f732f888d4cf43c943a40c9aaa836f9b7431'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ipv6/xfrm6_input.c?id=1f3a8e49d8f28f498b8694464623ac20aebfe62a'>1f3a8e49d8f28f498b8694464623ac20aebfe62a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ipv6/xfrm6_input.c?id=3ddc76dfc786cc6f87852693227fb0b1f124f807&amp;id2=1f3a8e49d8f28f498b8694464623ac20aebfe62a'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip</div><div class='commit-msg'>Pull timer type cleanups from Thomas Gleixner:
 "This series does a tree wide cleanup of types related to
  timers/timekeeping.

   - Get rid of cycles_t and use a plain u64. The type is not really
     helpful and caused more confusion than clarity

   - Get rid of the ktime union. The union has become useless as we use
     the scalar nanoseconds storage unconditionally now. The 32bit
     timespec alike storage got removed due to the Y2038 limitations
     some time ago.

     That leaves the odd union access around for no reason. Clean it up.

  Both changes have been done with coccinelle and a small amount of
  manual mopping up"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  ktime: Get rid of ktime_equal()
  ktime: Cleanup ktime_set() usage
  ktime: Get rid of the union
  clocksource: Use a plain u64 instead of cycle_t
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3ddc76dfc786cc6f87852693227fb0b1f124f807'>Diffstat</a> (limited to 'net/ipv6/xfrm6_input.c')</div><table summary='diffstat' class='diffstat'>