/*
 * 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);
e</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi?id=cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4'>uapi</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/mtd?id=cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4'>mtd</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4'/><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>Dan Carpenter &lt;dan.carpenter@oracle.com&gt;</td><td class='right'>2017-01-30 10:55:04 +0100</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 16:37:55 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/mtd?id=cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4'>cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/uapi/mtd?id=cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4'>a45096fd9e8aaeea2eac1f1999a3d17dfeb0d02b</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/uapi/mtd?id=cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4'>include/uapi/mtd</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/mtd?id=1930b60352e7e195f55b27cde15d2a8f43342a8b'>1930b60352e7e195f55b27cde15d2a8f43342a8b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/uapi/mtd?id=cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4&amp;id2=1930b60352e7e195f55b27cde15d2a8f43342a8b'>diff</a>)</td></tr></table>
<div class='commit-subject'>smc: some potential use after free bugs</div><div class='commit-msg'>Say we got really unlucky and these failed on the last iteration, then
it could lead to a use after free bug.

Fixes: cd6851f30386 ("smc: remote memory buffers (RMBs)")
Signed-off-by: Dan Carpenter &lt;dan.carpenter@oracle.com&gt;
Signed-off-by: Ursula Braun &lt;ubraun@linux.vnet.ibm.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/?id=cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4'>Diffstat</a> (limited to 'include/uapi/mtd')</div><table summary='diffstat' class='diffstat'>