/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009 - 2013 Daniel Borkmann.
 * Subject to the GPL, version 2.
 */

#ifndef DISSECTOR_H
#define DISSECTOR_H

#include <stdlib.h>
#include <stdint.h>
#include <sys/socket.h>
#include <linux/if_packet.h>
#include <linux/if.h>
#include <netlink/msg.h>

#include "ring.h"
#include "tprintf.h"
#include "linktype.h"
#include "proto_vlan.h"

#define PRINT_NORM		0
#define PRINT_LESS		1
#define PRINT_HEX		2
#define PRINT_ASCII		3
#define PRINT_HEX_ASCII		4
#define PRINT_NONE		5

extern char *if_indextoname(unsigned ifindex, char *ifname);

static const char * const packet_types[256] = {
	[PACKET_HOST]		=	"<",  /* Incoming */
	[PACKET_BROADCAST]	=	"B",  /* Broadcast */
	[PACKET_MULTICAST]	=	"M",  /* Multicast */
	[PACKET_OTHERHOST]	=	"P",  /* Promisc */
	[PACKET_OUTGOING]	=	">",  /* Outgoing */
	[PACKET_USER]		=	"K->U", /* To Userspace */
	[PACKET_KERNEL]		=	"U->K", /* To Kernelspace */
};

static inline const char *__show_ts_source(uint32_t status)
{
	if (status & TP_STATUS_TS_RAW_HARDWARE)
		return "(raw hw ts)";
	else if (status & TP_STATUS_TS_SYS_HARDWARE)
		return "(sys hw ts)";
	else if (status & TP_STATUS_TS_SOFTWARE)
		return "(sw ts)";
	else
		return "";
}

static inline void __show_frame_hdr(uint8_t *packet, size_t len, int linktype,
				    struct sockaddr_ll *s_ll, void *raw_hdr,
				    int mode, bool v3, unsigned long count)
{
	char tmp[IFNAMSIZ];
	union tpacket_uhdr hdr;
	uint8_t pkttype = s_ll->sll_pkttype;
	bool is_nl;

	if (mode == PRINT_NONE)
		return;

	/*
	 * If we're capturing on nlmon0, all packets will have sll_pkttype set
	 * to PACKET_OUTGOING, but we actually want PACKET_USER/PACKET_KERNEL as
	 * it originally was set in the kernel. Thus, use nlmsghdr->nlmsg_pid to
	 * restore the type.
	 */
	is_nl = (linktype == LINKTYPE_NETLINK && len >= sizeof(struct nlmsghdr));
	if (is_nl && pkttype == PACKET_OUTGOING) {
		struct nlmsghdr *hdr = (struct nlmsghdr *) packet;
		pkttype = hdr->nlmsg_pid == 0 ? PACKET_KERNEL : PACKET_USER;
	}

	hdr.raw = raw_hdr;
	switch (mode) {
	case PRINT_LESS:
		tprintf("%s %s %u #%lu",
			packet_types[pkttype] ? : "?",
			if_indextoname(s_ll->sll_ifindex, tmp) ? : "?",
			tpacket_uhdr(hdr, tp_len, v3),
			count);
		break;
	default:
		tprintf("%s %s %u %us.%uns #%lu %s\n",
			packet_types[pkttype] ? : "?",
			if_indextoname(s_ll->sll_ifindex, tmp) ? : "?",
			tpacket_uhdr(hdr, tp_len, v3),
			tpacket_uhdr(hdr, tp_sec, v3),
			tpacket_uhdr(hdr, tp_nsec, v3),
			count,
			v3 ? "" : __show_ts_source(hdr.h2->tp_status));

		if (tpacket_has_vlan_info(&hdr)) {
			uint16_t tci = tpacket_uhdr_vlan_tci(&hdr, v3);

			tprintf(" [ tpacketv3 VLAN ");
			tprintf("Prio (%u), ", vlan_tci2prio(tci));
			tprintf("CFI (%u), ", vlan_tci2cfi(tci));
			tprintf("ID (%u), ", vlan_tci2vid(tci));
			tprintf("Proto (0x%.4x)", tpacket_uhdr_vlan_proto(&hdr, v3));
			tprintf(" ]\n");
		}
		break;
	}
}

static inline void show_frame_hdr(uint8_t *packet, size_t len, int linktype,
				  struct frame_map *hdr, int mode,
				  unsigned long count)
{
	__show_frame_hdr(packet, len, linktype, &hdr->s_ll, &hdr->tp_h, mode,
			 false, count);
}

extern void dissector_init_all(int fnttype);
extern void dissector_entry_point(uint8_t *packet, size_t len, int linktype,
				  int mode, struct sockaddr_ll *sll);
extern void dissector_cleanup_all(void);
extern int dissector_set_print_type(void *ptr, int type);

#endif /* DISSECTOR_H */
'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>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-08 15:25:19 -0500</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-08 15:25:19 -0500</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=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3'>d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3'>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=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3'>0e66a1565e9c0bfd642ac18ecb607d2b074d0253</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=b05d0cfa1932376dc388a0fe67564572a84374a3'>b05d0cfa1932376dc388a0fe67564572a84374a3</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3&amp;id2=b05d0cfa1932376dc388a0fe67564572a84374a3'>diff</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=9665b74562ab95bcf1b0684d599bc6779c433fca'>9665b74562ab95bcf1b0684d599bc6779c433fca</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3&amp;id2=9665b74562ab95bcf1b0684d599bc6779c433fca'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'mlxsw-Reflect-nexthop-status-changes'</div><div class='commit-msg'>Jiri Pirko says:

====================
mlxsw: Reflect nexthop status changes

Ido says:

When the kernel forwards IPv4 packets via multipath routes it doesn't
consider nexthops that are dead or linkdown. For example, if the nexthop
netdev is administratively down or doesn't have a carrier.

Devices capable of offloading such multipath routes need to be made
aware of changes in the reflected nexthops' status. Otherwise, the
device might forward packets via non-functional nexthops, resulting in
packet loss. This patchset aims to fix that.

The first 11 patches deal with the necessary restructuring in the
mlxsw driver, so that it's able to correctly add and remove nexthops
from the device's adjacency table.

The 12th patch adds the NH_{ADD,DEL} events to the FIB notification
chain. These notifications are sent whenever the kernel decides to add
or remove a nexthop from the forwarding plane.

Finally, the last three patches add support for these events in the
mlxsw driver, which is currently the only driver capable of offloading
multipath routes.
====================

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=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3'>Diffstat</a></div><table summary='diffstat' class='diffstat'><tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/drivers/net/ethernet/mellanox/mlxsw/spectrum.c?h=nds-private-remove&amp;id=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3'>drivers/net/ethernet/mellanox/mlxsw/spectrum.c</a></td><td class='right'>6</td><td class='graph'><table summary='file diffstat' width='100%'><tr><td class='add' style='width: 1.1%;'/><td class='rem' style='width: 0.0%;'/><td class='none' style='width: 98.9%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/drivers/net/ethernet/mellanox/mlxsw/spectrum.h?h=nds-private-remove&amp;id=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3'>drivers/net/ethernet/mellanox/mlxsw/spectrum.h</a></td><td class='right'>7</td><td class='graph'><table summary='file diffstat' width='100%'><tr><td class='add' style='width: 1.1%;'/><td class='rem' style='width: 0.2%;'/><td class='none' style='width: 98.7%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c?h=nds-private-remove&amp;id=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3'>drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c</a></td><td class='right'>527</td><td class='graph'><table summary='file diffstat' width='100%'><tr><td class='add' style='width: 75.5%;'/><td class='rem' style='width: 24.5%;'/><td class='none' style='width: 0.0%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/include/net/ip_fib.h?h=nds-private-remove&amp;id=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3'>include/net/ip_fib.h</a></td><td class='right'>7</td><td class='graph'><table summary='file diffstat' width='100%'><tr><td class='add' style='width: 1.3%;'/><td class='rem' style='width: 0.0%;'/><td class='none' style='width: 98.7%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/net/ipv4/fib_semantics.c?h=nds-private-remove&amp;id=d9e1661dab02e62a2ce971cfc2b957ee52f7cdf3'>net/ipv4/fib_semantics.c</a></td><td class='right'>33</td><td class='graph'><table summary='file diffstat' width='100%'><tr><td class='add' style='width: 6.3%;'/><td class='rem' style='width: 0.0%;'/><td class='none' style='width: 93.7%;'/></tr></table></td></tr>
</table><div class='diffstat-summary'>5 files changed, 450 insertions, 130 deletions</div><table summary='diff' class='diff'><tr><td><div class='head'>diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c