/* include/net/dsfield.h - Manipulation of the Differentiated Services field */

/* Written 1998-2000 by Werner Almesberger, EPFL ICA */


#ifndef __NET_DSFIELD_H
#define __NET_DSFIELD_H

#include <linux/types.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <asm/byteorder.h>


static inline __u8 ipv4_get_dsfield(const struct iphdr *iph)
{
	return iph->tos;
}


static inline __u8 ipv6_get_dsfield(const struct ipv6hdr *ipv6h)
{
	return ntohs(*(const __be16 *)ipv6h) >> 4;
}


static inline void ipv4_change_dsfield(struct iphdr *iph,__u8 mask,
    __u8 value)
{
        __u32 check = ntohs((__force __be16)iph->check);
	__u8 dsfield;

	dsfield = (iph->tos & mask) | value;
	check += iph->tos;
	if ((check+1) >> 16) check = (check+1) & 0xffff;
	check -= dsfield;
	check += check >> 16; /* adjust carry */
	iph->check = (__force __sum16)htons(check);
	iph->tos = dsfield;
}


static inline void ipv6_change_dsfield(struct ipv6hdr *ipv6h,__u8 mask,
    __u8 value)
{
	__be16 *p = (__force __be16 *)ipv6h;

	*p = (*p & htons((((u16)mask << 4) | 0xf00f))) | htons((u16)value << 4);
}


#endif
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<tr><th>author</th><td>Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;</td><td class='right'>2016-04-26 14:58:46 -0700</td></tr>
<tr><th>committer</th><td>Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;</td><td class='right'>2016-04-26 14:58:46 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation/arm/tcm.txt?id=431adc0aeca68d257bd705db50f73e4c19e5690d'>431adc0aeca68d257bd705db50f73e4c19e5690d</a> (<a href='/cgit.cgi/linux/net-next.git/patch/Documentation/arm/tcm.txt?id=431adc0aeca68d257bd705db50f73e4c19e5690d'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation/arm/tcm.txt?id=bf16200689118d19de1b8d2a3c314fc21f5dc7bb'>bf16200689118d19de1b8d2a3c314fc21f5dc7bb</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation/arm/tcm.txt?id=431adc0aeca68d257bd705db50f73e4c19e5690d&amp;id2=bf16200689118d19de1b8d2a3c314fc21f5dc7bb'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation/arm/tcm.txt?id=8e6cb470bac6b1e7afa4642a40a71f9bcd066242'>8e6cb470bac6b1e7afa4642a40a71f9bcd066242</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation/arm/tcm.txt?id=431adc0aeca68d257bd705db50f73e4c19e5690d&amp;id2=8e6cb470bac6b1e7afa4642a40a71f9bcd066242'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'iio-fixes-for-4.6c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus</div><div class='commit-msg'>Jonathan writes:

3rd set of IIO fixes for the 4.6 cycle.

* ak8975
  - fix a null pointer exception if an interrupt occurs during probe.
  - fix a maybe-unitialized warning.
* at91-sama5d2
  - fix a crash on removal of the module.
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=431adc0aeca68d257bd705db50f73e4c19e5690d'>Diffstat</a> (limited to 'Documentation/arm/tcm.txt')</div><table summary='diffstat' class='diffstat'>