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

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

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

struct arphdr {
	uint16_t ar_hrd;   /* format of hardware address */
	uint16_t ar_pro;   /* format of protocol address */
	uint8_t ar_hln;    /* length of hardware address */
	uint8_t ar_pln;    /* length of protocol address */
	uint16_t ar_op;    /* ARP opcode (command)       */
	uint8_t ar_sha[6]; /* sender hardware address    */
	uint8_t ar_sip[4]; /* sender IP address          */
	uint8_t ar_tha[6]; /* target hardware address    */
	uint8_t ar_tip[4]; /* target IP address          */
} __packed;

#define ARPHRD_ETHER	1
#define ARPHRD_IEEE802	6
#define ARPHRD_ARCNET	7
#define ARPHRD_ATM	16
#define ARPHRD_ATM2	19
#define ARPHRD_SERIAL	20
#define ARPHRD_ATM3	21
#define ARPHRD_IEEE1394	24

#define ARPOP_REQUEST   1  /* ARP request                */
#define ARPOP_REPLY     2  /* ARP reply                  */
#define ARPOP_RREQUEST  3  /* RARP request               */
#define ARPOP_RREPLY    4  /* RARP reply                 */
#define ARPOP_InREQUEST 8  /* InARP request              */
#define ARPOP_InREPLY   9  /* InARP reply                */
#define ARPOP_NAK       10 /* (ATM)ARP NAK               */

static void arp(struct pkt_buff *pkt)
{
	char *hrd;
	char *pro;
	char *opcode;
	struct arphdr *arp = (struct arphdr *) pkt_pull(pkt, sizeof(*arp));

	if (arp == NULL)
		return;

	switch (ntohs(arp->ar_hrd)) {
	case ARPHRD_ETHER:
		hrd = "Ethernet";
		break;
	case ARPHRD_IEEE802:
		hrd = "IEEE 802";
		break;
	case ARPHRD_ARCNET:
		hrd = "ARCNET";
		break;
	case ARPHRD_ATM:
	case ARPHRD_ATM2:
	case ARPHRD_ATM3:
		hrd = "ATM";
		break;
	case ARPHRD_SERIAL:
		hrd = "Serial Line";
		break;
	case ARPHRD_IEEE1394:
		hrd = "IEEE 1394.1995";
		break;
	default:
		hrd = "Unknown";
		break;
	}

	pro = lookup_ether_type(ntohs(arp->ar_pro));
	if (pro == NULL)
		pro = "Unknown";

	switch (ntohs(arp->ar_op)) {
	case ARPOP_REQUEST:
		opcode = "ARP request";
		break;
	case ARPOP_REPLY:
		opcode = "ARP reply";
		break;
	case ARPOP_RREQUEST:
		opcode = "RARP request";
		break;
	case ARPOP_RREPLY:
		opcode = "RARP reply";
		break;
	case ARPOP_InREQUEST:
		opcode = "InARP request";
		break;
	case ARPOP_InREPLY:
		opcode = "InARP reply";
		break;
	case ARPOP_NAK:
		opcode = "(ATM) ARP NAK";
		break;
	default:
		opcode = "Unknown";
		break;
	};

	tprintf(" [ ARP ");
	tprintf("Format HA (%u => %s), ", ntohs(arp->ar_hrd), hrd);
	tprintf("Format Proto (0x%.4x => %s), ", ntohs(arp->ar_pro), pro);
	tprintf("HA Len (%u), ", arp->ar_hln);
	tprintf("Proto Len (%u), ", arp->ar_pln);
	tprintf("Opcode (%u => %s)", ntohs(arp->ar_op), opcode);
	tprintf(" ]\n");
}

static void arp_less(struct pkt_buff *pkt)
{
	char *opcode = NULL;
	struct arphdr *arp = (struct arphdr *) pkt_pull(pkt, sizeof(*arp));

	if (arp == NULL)
		return;

	switch (ntohs(arp->ar_op)) {
	case ARPOP_REQUEST:
		opcode = "ARP request";
		break;
	case ARPOP_REPLY:
		opcode = "ARP reply";
		break;
	case ARPOP_RREQUEST:
		opcode = "RARP request";
		break;
	case ARPOP_RREPLY:
		opcode = "RARP reply";
		break;
	case ARPOP_InREQUEST:
		opcode = "InARP request";
		break;
	case ARPOP_InREPLY:
		opcode = "InARP reply";
		break;
	case ARPOP_NAK:
		opcode = "(ATM) ARP NAK";
		break;
	default:
		opcode = "Unknown";
		break;
	};

	tprintf(" Op %s", opcode);
}

struct protocol arp_ops = {
	.key = 0x0806,
	.print_full = arp,
	.print_less = arp_less,
};
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><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=d1e44b6b2823f1751ffe7e7589f545f05cfe2095&amp;id2=a8a47540ebe32f1733eebc3e5699af580ceaa3f5'>Diffstat</a></div><table summary='diffstat' class='diffstat'>ef='/cgit.cgi/linux/net-next.git/patch/?id=0bbbb00bda57e6f091275b0103445596322b9277'>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=0bbbb00bda57e6f091275b0103445596322b9277'>107e230ea37ad78648709c02e2c4af71bc801368</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=bb43d40d7c830da5f623e3938fef908b003b7523'>bb43d40d7c830da5f623e3938fef908b003b7523</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=0bbbb00bda57e6f091275b0103445596322b9277&amp;id2=bb43d40d7c830da5f623e3938fef908b003b7523'>diff</a>)</td></tr></table>
<div class='commit-subject'>drm/sun4i: defer only if we didn't find our panel</div><div class='commit-msg'>Our code currently defers our probe on any error, even if we were not
expecting to have one at all.

Make sure we return -EPROBE_DEFER only when we were supposed to have a
panel, but it's not probed yet.

Also fix a typo while we're at it.

Fixes: 29e57fab97fc ("drm: sun4i: Add RGB output")
Signed-off-by: Maxime Ripard &lt;maxime.ripard@free-electrons.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=0bbbb00bda57e6f091275b0103445596322b9277'>Diffstat</a></div><table summary='diffstat' class='diffstat'>