/*
 * Copyright(c) 2007 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Maintained at www.Open-FCoE.org
 */

#ifndef _FC_FCOE_H_
#define	_FC_FCOE_H_

/*
 * FCoE - Fibre Channel over Ethernet.
 * See T11 FC-BB-5 Rev 2.00 (09-056v5.pdf)
 */

/*
 * Default FC_FCOE_OUI / FC-MAP value.
 */
#define	FC_FCOE_OUI	0x0efc00	/* upper 24 bits of FCOE MAC */

/*
 * Fabric Login (FLOGI) MAC for non-FIP use.  Non-FIP use is deprecated.
 */
#define	FC_FCOE_FLOGI_MAC { 0x0e, 0xfc, 0x00, 0xff, 0xff, 0xfe }

#define	FC_FCOE_VER	0			/* version */

/*
 * Ethernet Addresses based on FC S_ID and D_ID.
 * Generated by FC_FCOE_OUI | S_ID/D_ID
 */
#define	FC_FCOE_ENCAPS_ID(n)	(((u64) FC_FCOE_OUI << 24) | (n))
#define	FC_FCOE_DECAPS_ID(n)	((n) >> 24)

/*
 * FCoE frame header - 14 bytes
 * This follows the VLAN header, which includes the ethertype.
 */
struct fcoe_hdr {
	__u8		fcoe_ver;	/* version field - upper 4 bits */
	__u8		fcoe_resvd[12];	/* reserved - send zero and ignore */
	__u8		fcoe_sof;	/* start of frame per RFC 3643 */
};

#define FC_FCOE_DECAPS_VER(hp)	    ((hp)->fcoe_ver >> 4)
#define FC_FCOE_ENCAPS_VER(hp, ver) ((hp)->fcoe_ver = (ver) << 4)

/*
 * FCoE CRC & EOF - 8 bytes.
 */
struct fcoe_crc_eof {
	__le32		fcoe_crc32;	/* CRC for FC packet */
	__u8		fcoe_eof;	/* EOF from RFC 3643 */
	__u8		fcoe_resvd[3];	/* reserved - send zero and ignore */
} __attribute__((packed));

/*
 * Minimum FCoE + FC header length
 * 14 bytes FCoE header + 24 byte FC header = 38 bytes
 */
#define FCOE_HEADER_LEN 38

/*
 * Minimum FCoE frame size
 * 14 bytes FCoE header + 24 byte FC header + 8 byte FCoE trailer = 46 bytes
 */
#define FCOE_MIN_FRAME 46

/*
 * FCoE Link Error Status Block: T11 FC-BB-5 Rev2.0, Clause 7.10.
 */
struct fcoe_fc_els_lesb {
	__be32		lesb_link_fail;	/* link failure count */
	__be32		lesb_vlink_fail; /* virtual link failure count */
	__be32		lesb_miss_fka;	/* missing FIP keep-alive count */
	__be32		lesb_symb_err;	/* symbol error during carrier count */
	__be32		lesb_err_block;	/* errored block count */
	__be32		lesb_fcs_error; /* frame check sequence error count */
};

/*
 * fc_fcoe_set_mac - Store OUI + DID into MAC address field.
 * @mac: mac address to be set
 * @did: fc dest id to use
 */
static inline void fc_fcoe_set_mac(u8 *mac, u8 *did)
{
	mac[0] = (u8) (FC_FCOE_OUI >> 16);
	mac[1] = (u8) (FC_FCOE_OUI >> 8);
	mac[2] = (u8) FC_FCOE_OUI;
	mac[3] = did[0];
	mac[4] = did[1];
	mac[5] = did[2];
}

#endif /* _FC_FCOE_H_ */
><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='4759d386d55fef452d692bf101167914437e848e'/><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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-01 12:27:05 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-01 12:27:05 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/fc?id=4759d386d55fef452d692bf101167914437e848e'>4759d386d55fef452d692bf101167914437e848e</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/scsi/fc?id=4759d386d55fef452d692bf101167914437e848e'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=4759d386d55fef452d692bf101167914437e848e'>e7109c192ec589fcea2a98f9702aa3c0e4009581</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/scsi/fc?id=4759d386d55fef452d692bf101167914437e848e'>include/scsi/fc</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/fc?id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>238d1d0f79f619d75c2cc741d6770fb0986aef24</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/scsi/fc?id=4759d386d55fef452d692bf101167914437e848e&amp;id2=238d1d0f79f619d75c2cc741d6770fb0986aef24'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/fc?id=1db175428ee374489448361213e9c3b749d14900'>1db175428ee374489448361213e9c3b749d14900</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/scsi/fc?id=4759d386d55fef452d692bf101167914437e848e&amp;id2=1db175428ee374489448361213e9c3b749d14900'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm</div><div class='commit-msg'>Pull DAX updates from Dan Williams:
 "The completion of Jan's DAX work for 4.10.

  As I mentioned in the libnvdimm-for-4.10 pull request, these are some
  final fixes for the DAX dirty-cacheline-tracking invalidation work
  that was merged through the -mm, ext4, and xfs trees in -rc1. These
  patches were prepared prior to the merge window, but we waited for
  4.10-rc1 to have a stable merge base after all the prerequisites were
  merged.

  Quoting Jan on the overall changes in these patches:

     "So I'd like all these 6 patches to go for rc2. The first three
      patches fix invalidation of exceptional DAX entries (a bug which
      is there for a long time) - without these patches data loss can
      occur on power failure even though user called fsync(2). The other
      three patches change locking of DAX faults so that -&gt;iomap_begin()
      is called in a more relaxed locking context and we are safe to
      start a transaction there for ext4"

  These have received a build success notification from the kbuild
  robot, and pass the latest libnvdimm unit tests. There have not been
  any -next releases since -rc1, so they have not appeared there"

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  ext4: Simplify DAX fault path
  dax: Call -&gt;iomap_begin without entry lock during dax fault
  dax: Finish fault completely when loading holes
  dax: Avoid page invalidation races and unnecessary radix tree traversals
  mm: Invalidate DAX radix tree entries only if appropriate
  ext2: Return BH_New buffers for zeroed blocks
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=4759d386d55fef452d692bf101167914437e848e'>Diffstat</a> (limited to 'include/scsi/fc')</div><table summary='diffstat' class='diffstat'>