/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2012 Markus Amend <markus@netsniff-ng.org>, Deutsche Flugsicherung GmbH
 * Subject to the GPL, version 2.
 *
 * http://tools.ietf.org/html/rfc3032
 */

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

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

struct mpls_uchdr {
	uint32_t mpls_uc_hdr;
} __packed;

static int mpls_uc_next_proto(struct pkt_buff *pkt)
{
	uint8_t proto;
	uint16_t key = 0;

	if (pkt_len(pkt))
		proto = *(pkt->data);
	else
		return -EIO;

	/* FIXME: Right now only test for IP Version field */
	switch (proto >> 4) {
	case 4:
		key = 0x0800; /* IPv4*/
		break;
	case 6:
		key = 0x86DD; /* IPv6*/
		break;
	default:
		/* Nothing detected ... */
		return -ENOENT;
	}

	return key;
}

static void mpls_uc_full(struct pkt_buff *pkt)
{
	int next;
	uint32_t mpls_uc_data;
	struct mpls_uchdr *mpls_uc;
	uint8_t s = 0;

	do {
		mpls_uc = (struct mpls_uchdr *) pkt_pull(pkt, sizeof(*mpls_uc));
		if (mpls_uc == NULL)
			return;

		mpls_uc_data = ntohl(mpls_uc->mpls_uc_hdr);
		s = (mpls_uc_data >> 8) & 0x1;

		tprintf(" [ MPLS ");
		tprintf("Label (%u), ", mpls_uc_data >> 12);
		tprintf("Exp (%u), ", (mpls_uc_data >> 9) & 0x7);
		tprintf("S (%u), ", s);
		tprintf("TTL (%u)", (mpls_uc_data & 0xFF));
		tprintf(" ]\n");
	} while (!s);

	next = mpls_uc_next_proto(pkt);
	if (next < 0)
		return;

	pkt_set_dissector(pkt, &eth_lay2, (uint16_t) next);
}

static void mpls_uc_less(struct pkt_buff *pkt)
{
	int next;
	uint32_t mpls_uc_data;
	struct mpls_uchdr *mpls_uc;
	uint8_t s = 0;

	do {
		mpls_uc = (struct mpls_uchdr *) pkt_pull(pkt, sizeof(*mpls_uc));
		if (mpls_uc == NULL)
			return;

		mpls_uc_data = ntohl(mpls_uc->mpls_uc_hdr);
		s = (mpls_uc_data >> 8) & 0x1;

		tprintf(" MPLS/%u", mpls_uc_data >> 12);
	} while (!s);

	next = mpls_uc_next_proto(pkt);
	if (next < 0)
		return;

	pkt_set_dissector(pkt, &eth_lay2, (uint16_t) next);
}

struct protocol mpls_uc_ops = {
	.key = 0x8847,
	.print_full = mpls_uc_full,
	.print_less = mpls_uc_less,
};
0efcec575aa69483439fc6fda'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/'>
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<div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='3d8c4530e50dc030efcec575aa69483439fc6fda'/><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>Russell King - ARM Linux &lt;linux@armlinux.org.uk&gt;</td><td class='right'>2016-06-30 10:36:15 +0100</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2016-07-01 05:59:39 -0400</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=3d8c4530e50dc030efcec575aa69483439fc6fda'>3d8c4530e50dc030efcec575aa69483439fc6fda</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=3d8c4530e50dc030efcec575aa69483439fc6fda'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=3d8c4530e50dc030efcec575aa69483439fc6fda'>5f3261e713378481b33b27483fd54b1fe812146e</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=f95ae8a0edba1cb85110df4f1c96786419a0472f'>f95ae8a0edba1cb85110df4f1c96786419a0472f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=3d8c4530e50dc030efcec575aa69483439fc6fda&amp;id2=f95ae8a0edba1cb85110df4f1c96786419a0472f'>diff</a>)</td></tr></table>
<div class='commit-subject'>net: mvneta: fix open() error cleanup</div><div class='commit-msg'>If mvneta_mdio_probe() fails, a kernel warning is triggered due to
missing cleanup in the error path.  Add the necessary cleanup.

------------[ cut here ]------------
WARNING: CPU: 1 PID: 281 at kernel/irq/manage.c:1814 __free_percpu_irq+0xfc/0x130
percpu IRQ 38 still enabled on CPU0!
Modules linked in: bnep bluetooth xhci_plat_hcd xhci_hcd marvell_cesa armada_thermal des_generic ehci_orion mcp3021 spi_orion sfp mdio_i2c evbug fuse
CPU: 1 PID: 281 Comm: connmand Not tainted 4.7.0-rc2+ #53
Hardware name: Marvell Armada 380/385 (Device Tree)
Backtrace:
[&lt;c0013488&gt;] (dump_backtrace) from [&lt;c00137d0&gt;] (show_stack+0x18/0x1c)
 r6:60010093 r5:ffffffff r4:00000000 r3:dc8ba500
[&lt;c00137b8&gt;] (show_stack) from [&lt;c02c6fe0&gt;] (dump_stack+0xa4/0xdc)
[&lt;c02c6f3c&gt;] (dump_stack) from [&lt;c002d4ec&gt;] (__warn+0xd8/0x104)
 r6:c081e6a0 r5:00000000 r4:edfe5d50 r3:dc8ba500
[&lt;c002d414&gt;] (__warn) from [&lt;c002d5d0&gt;] (warn_slowpath_fmt+0x40/0x48)
 r10:a0010013 r8:c09356f8 r7:00000026 r6:ef11a260 r5:edd7b980 r4:ef11a200
[&lt;c002d594&gt;] (warn_slowpath_fmt) from [&lt;c008c8e0&gt;] (__free_percpu_irq+0xfc/0x130)
 r3:00000026 r2:c081e7ac
[&lt;c008c7e4&gt;] (__free_percpu_irq) from [&lt;c008c95c&gt;] (free_percpu_irq+0x48/0x74)
 r10:00008914 r8:00000000 r7:ffffffed r6:c09356f8 r5:00000026 r4:ef11a200
[&lt;c008c914&gt;] (free_percpu_irq) from [&lt;c043dd70&gt;] (mvneta_open+0x118/0x134)
 r6:ffffffed r5:ef01e640 r4:ef01e000 r3:ef01e000
[&lt;c043dc58&gt;] (mvneta_open) from [&lt;c055f5b4&gt;] (__dev_open+0xa4/0x108)
 r7:ef01e030 r6:c06ff3d8 r5:ffff9003 r4:ef01e000
[&lt;c055f510&gt;] (__dev_open) from [&lt;c055f844&gt;] (__dev_change_flags+0x94/0x150)
 r7:00001002 r6:00000001 r5:ffff9003 r4:ef01e000
[&lt;c055f7b0&gt;] (__dev_change_flags) from [&lt;c055f938&gt;] (dev_change_flags+0x20/0x50)
 r8:00000000 r7:c09334c8 r6:00001002 r5:00000148 r4:ef01e000 r3:00008914
[&lt;c055f918&gt;] (dev_change_flags) from [&lt;c05de044&gt;] (devinet_ioctl+0x6f4/0x7e0)
 r8:00000000 r7:c09334c8 r6:00000000 r5:ee87200c r4:00000000 r3:00008914
[&lt;c05dd950&gt;] (devinet_ioctl) from [&lt;c05e0168&gt;] (inet_ioctl+0x1b8/0x1c8)
 r10:beb4499c r9:edfe4000 r8:ecf13280 r7:c096cf00 r6:beb4499c r5:eef7c240
 r4:00008914
[&lt;c05dffb0&gt;] (inet_ioctl) from [&lt;c053c898&gt;] (sock_ioctl+0x78/0x300)
[&lt;c053c820&gt;] (sock_ioctl) from [&lt;c0155ecc&gt;] (do_vfs_ioctl+0x98/0xa60)
 r7:00000011 r6:00008914 r5:00000011 r4:c01568d0
[&lt;c0155e34&gt;] (do_vfs_ioctl) from [&lt;c01568d0&gt;] (SyS_ioctl+0x3c/0x60)
 r10:00000000 r9:edfe4000 r8:beb4499c r7:00000011 r6:00008914 r5:ecf13280
 r4:ecf13280
[&lt;c0156894&gt;] (SyS_ioctl) from [&lt;c000fe60&gt;] (ret_fast_syscall+0x0/0x1c)
 r8:c0010004 r7:00000036 r6:00000011 r5:000a2978 r4:00000000 r3:00009003
---[ end trace 711f625d5b04b3a7 ]---

Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
Tested-by: Jon Nettleton &lt;jon@solid-run.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=3d8c4530e50dc030efcec575aa69483439fc6fda'>Diffstat</a></div><table summary='diffstat' class='diffstat'>