/*
 * NET3:	Fibre Channel device handling subroutines
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 *
 *		Vineet Abraham <vma@iol.unh.edu>
 *		v 1.0 03/22/99
 */

#include <linux/uaccess.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/fcdevice.h>
#include <linux/skbuff.h>
#include <linux/errno.h>
#include <linux/timer.h>
#include <linux/net.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
#include <linux/export.h>
#include <net/arp.h>

/*
 *	Put the headers on a Fibre Channel packet.
 */

static int fc_header(struct sk_buff *skb, struct net_device *dev,
		     unsigned short type,
		     const void *daddr, const void *saddr, unsigned int len)
{
	struct fch_hdr *fch;
	int hdr_len;

	/*
	 * Add the 802.2 SNAP header if IP as the IPv4 code calls
	 * dev->hard_header directly.
	 */
	if (type == ETH_P_IP || type == ETH_P_ARP)
	{
		struct fcllc *fcllc;

		hdr_len = sizeof(struct fch_hdr) + sizeof(struct fcllc);
		fch = (struct fch_hdr *)skb_push(skb, hdr_len);
		fcllc = (struct fcllc *)(fch+1);
		fcllc->dsap = fcllc->ssap = EXTENDED_SAP;
		fcllc->llc = UI_CMD;
		fcllc->protid[0] = fcllc->protid[1] = fcllc->protid[2] = 0x00;
		fcllc->ethertype = htons(type);
	}
	else
	{
		hdr_len = sizeof(struct fch_hdr);
		fch = (struct fch_hdr *)skb_push(skb, hdr_len);
	}

	if(saddr)
		memcpy(fch->saddr,saddr,dev->addr_len);
	else
		memcpy(fch->saddr,dev->dev_addr,dev->addr_len);

	if(daddr)
	{
		memcpy(fch->daddr,daddr,dev->addr_len);
		return hdr_len;
	}
	return -hdr_len;
}

static const struct header_ops fc_header_ops = {
	.create	 = fc_header,
};

static void fc_setup(struct net_device *dev)
{
	dev->header_ops		= &fc_header_ops;
	dev->type		= ARPHRD_IEEE802;
	dev->hard_header_len	= FC_HLEN;
	dev->mtu		= 2024;
	dev->addr_len		= FC_ALEN;
	dev->tx_queue_len	= 100; /* Long queues on fc */
	dev->flags		= IFF_BROADCAST;

	memset(dev->broadcast, 0xFF, FC_ALEN);
}

/**
 * alloc_fcdev - Register fibre channel device
 * @sizeof_priv: Size of additional driver-private structure to be allocated
 *	for this fibre channel device
 *
 * Fill in the fields of the device structure with fibre channel-generic values.
 *
 * Constructs a new net device, complete with a private data area of
 * size @sizeof_priv.  A 32-byte (not bit) alignment is enforced for
 * this private data area.
 */
struct net_device *alloc_fcdev(int sizeof_priv)
{
	return alloc_netdev(sizeof_priv, "fc%d", NET_NAME_UNKNOWN, fc_setup);
}
EXPORT_SYMBOL(alloc_fcdev);
a1e9'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=0488a6121dfe6cbd44de15ea3627913b7549a1e9'>net</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/net?h=nds-private-remove&amp;id=0488a6121dfe6cbd44de15ea3627913b7549a1e9&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-01 14:10:03 -0500'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=f3b20313aef93f9cfda76fec2c05625f88510f18'>net/sched: act_psample: Remove unnecessary ASSERT_RTNL</a></td><td>Yotam Gigi</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-01 14:10:03 -0500'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=cadb9c9fdbc6a624d57b5ecdfd412b5800848703'>net/sched: act_sample: Fix error path in init</a></td><td>Yotam Gigi</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-01 12:13:52 -0500'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=1f5e29ce7989eb75652774004b962ee1eb6e56ca'>net: ipv6: add NLM_F_APPEND in notifications when applicable</a></td><td>David Ahern</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-01 12:02:48 -0500'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=b2504a5dbef3305ef41988ad270b0e8ec289331c'>net: reduce skb_warn_bad_offload() noise</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+9</span></td></tr>
<tr><td><span title='2017-02-01 11:53:23 -0500'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=160ca0142431c19386db976302fd4b07c587f651'>rtnetlink: Handle IFLA_MASTER parameter when processing rtnl_newlink</a></td><td>Theuns Verwoerd</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+6</span></td></tr>