#ifndef __NET_GUE_H
#define __NET_GUE_H

/* Definitions for the GUE header, standard and private flags, lengths
 * of optional fields are below.
 *
 * Diagram of GUE header:
 *
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |Ver|C|  Hlen   | Proto/ctype   |        Standard flags       |P|
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |                                                               |
 * ~                      Fields (optional)                        ~
 * |                                                               |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |            Private flags (optional, P bit is set)             |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |                                                               |
 * ~                   Private fields (optional)                   ~
 * |                                                               |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *
 * C bit indicates contol message when set, data message when unset.
 * For a control message, proto/ctype is interpreted as a type of
 * control message. For data messages, proto/ctype is the IP protocol
 * of the next header.
 *
 * P bit indicates private flags field is present. The private flags
 * may refer to options placed after this field.
 */

struct guehdr {
	union {
		struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
			__u8	hlen:5,
				control:1,
				version:2;
#elif defined (__BIG_ENDIAN_BITFIELD)
			__u8	version:2,
				control:1,
				hlen:5;
#else
#error  "Please fix <asm/byteorder.h>"
#endif
			__u8    proto_ctype;
			__u16   flags;
		};
		__u32 word;
	};
};

/* Standard flags in GUE header */

#define GUE_FLAG_PRIV	htons(1<<0)	/* Private flags are in options */
#define GUE_LEN_PRIV	4

#define GUE_FLAGS_ALL	(GUE_FLAG_PRIV)

/* Private flags in the private option extension */

#define GUE_PFLAG_REMCSUM	htonl(1 << 31)
#define GUE_PLEN_REMCSUM	4

#define GUE_PFLAGS_ALL	(GUE_PFLAG_REMCSUM)

/* Functions to compute options length corresponding to flags.
 * If we ever have a lot of flags this can be potentially be
 * converted to a more optimized algorithm (table lookup
 * for instance).
 */
static inline size_t guehdr_flags_len(__be16 flags)
{
	return ((flags & GUE_FLAG_PRIV) ? GUE_LEN_PRIV : 0);
}

static inline size_t guehdr_priv_flags_len(__be32 flags)
{
	return 0;
}

/* Validate standard and private flags. Returns non-zero (meaning invalid)
 * if there is an unknown standard or private flags, or the options length for
 * the flags exceeds the options length specific in hlen of the GUE header.
 */
static inline int validate_gue_flags(struct guehdr *guehdr,
				     size_t optlen)
{
	size_t len;
	__be32 flags = guehdr->flags;

	if (flags & ~GUE_FLAGS_ALL)
		return 1;

	len = guehdr_flags_len(flags);
	if (len > optlen)
		return 1;

	if (flags & GUE_FLAG_PRIV) {
		/* Private flags are last four bytes accounted in
		 * guehdr_flags_len
		 */
		flags = *(__be32 *)((void *)&guehdr[1] + len - GUE_LEN_PRIV);

		if (flags & ~GUE_PFLAGS_ALL)
			return 1;

		len += guehdr_priv_flags_len(flags);
		if (len > optlen)
			return 1;
	}

	return 0;
}

#endif
32f6ef3334fc9a3b33d22'>decnet</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/decnet/Kconfig?h=nds-private-remove&amp;id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>Kconfig</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'/><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'>2016-12-20 15:48:34 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-20 15:48:34 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/decnet/Kconfig?h=nds-private-remove&amp;id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/decnet/Kconfig?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>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=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>81b4e19de7308ce46ac7d0f670302906a906f0d0</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/decnet/Kconfig?h=nds-private-remove&amp;id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>net/decnet/Kconfig</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/decnet/Kconfig?h=nds-private-remove&amp;id=3eb86259eca6a363ed7bb13ecea5cda809f7b97d'>3eb86259eca6a363ed7bb13ecea5cda809f7b97d</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/decnet/Kconfig?h=nds-private-remove&amp;id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22&amp;id2=3eb86259eca6a363ed7bb13ecea5cda809f7b97d'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/decnet/Kconfig?h=nds-private-remove&amp;id=a763f78cea845c91b8d91f93dabf70c407635dc5'>a763f78cea845c91b8d91f93dabf70c407635dc5</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/decnet/Kconfig?h=nds-private-remove&amp;id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22&amp;id2=a763f78cea845c91b8d91f93dabf70c407635dc5'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</div><div class='commit-msg'>Pull networking fixes and cleanups from David Miller:

 1) Use rb_entry() instead of hardcoded container_of(), from Geliang
    Tang.

 2) Use correct memory barriers in stammac driver, from Pavel Machek.

 3) Fix assoc bind address handling in SCTP, from Xin Long.

 4) Make the length check for UFO handling consistent between
    __ip_append_data() and ip_finish_output(), from Zheng Li.

 5) HSI driver compatible strings were busted fro hix5hd2, from Dongpo
    Li.

 6) Handle devm_ioremap() errors properly in cavium driver, from Arvind
    Yadav.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (22 commits)
  RDS: use rb_entry()
  net_sched: sch_netem: use rb_entry()
  net_sched: sch_fq: use rb_entry()
  net/mlx5: use rb_entry()
  ethernet: sfc: Add Kconfig entry for vendor Solarflare
  sctp: not copying duplicate addrs to the assoc's bind address list
  sctp: reduce indent level in sctp_copy_local_addr_list
  ARM: dts: hix5hd2: don't change the existing compatible string
  net: hix5hd2_gmac: fix compatible strings name
  openvswitch: Add a missing break statement.
  net: netcp: ethss: fix 10gbe host port tx pri map configuration
  net: netcp: ethss: fix errors in ethtool ops
  fsl/fman: enable compilation on ARM64
  fsl/fman: A007273 only applies to PPC SoCs
  powerpc: fsl/fman: remove fsl,fman from of_device_ids[]
  fsl/fman: fix 1G support for QSGMII interfaces
  dt: bindings: net: use boolean dt properties for eee broken modes
  net: phy: use boolean dt properties for eee broken modes
  net: phy: fix sign type error in genphy_config_eee_advert
  ipv4: Should use consistent conditional judgement for ip fragment in __ip_append_data and ip_finish_output
  ...
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>Diffstat</a> (limited to 'net/decnet/Kconfig')</div><table summary='diffstat' class='diffstat'>