/*
 *	IPV6 GSO/GRO offload support
 *	Linux INET6 implementation
 *
 *	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.
 *
 *      TCPv6 GSO/GRO support
 */
#include <linux/skbuff.h>
#include <net/protocol.h>
#include <net/tcp.h>
#include <net/ip6_checksum.h>
#include "ip6_offload.h"

static struct sk_buff **tcp6_gro_receive(struct sk_buff **head,
					 struct sk_buff *skb)
{
	/* Don't bother verifying checksum if we're going to flush anyway. */
	if (!NAPI_GRO_CB(skb)->flush &&
	    skb_gro_checksum_validate(skb, IPPROTO_TCP,
				      ip6_gro_compute_pseudo)) {
		NAPI_GRO_CB(skb)->flush = 1;
		return NULL;
	}

	return tcp_gro_receive(head, skb);
}

static int tcp6_gro_complete(struct sk_buff *skb, int thoff)
{
	const struct ipv6hdr *iph = ipv6_hdr(skb);
	struct tcphdr *th = tcp_hdr(skb);

	th->check = ~tcp_v6_check(skb->len - thoff, &iph->saddr,
				  &iph->daddr, 0);
	skb_shinfo(skb)->gso_type |= SKB_GSO_TCPV6;

	return tcp_gro_complete(skb);
}

static struct sk_buff *tcp6_gso_segment(struct sk_buff *skb,
					netdev_features_t features)
{
	struct tcphdr *th;

	if (!pskb_may_pull(skb, sizeof(*th)))
		return ERR_PTR(-EINVAL);

	if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {
		const struct ipv6hdr *ipv6h = ipv6_hdr(skb);
		struct tcphdr *th = tcp_hdr(skb);

		/* Set up pseudo header, usually expect stack to have done
		 * this.
		 */

		th->check = 0;
		skb->ip_summed = CHECKSUM_PARTIAL;
		__tcp_v6_send_check(skb, &ipv6h->saddr, &ipv6h->daddr);
	}

	return tcp_gso_segment(skb, features);
}
static const struct net_offload tcpv6_offload = {
	.callbacks = {
		.gso_segment	=	tcp6_gso_segment,
		.gro_receive	=	tcp6_gro_receive,
		.gro_complete	=	tcp6_gro_complete,
	},
};

int __init tcpv6_offload_init(void)
{
	return inet6_add_offload(&tcpv6_offload, IPPROTO_TCP);
}
ers/usb/host/ehci-orion.c?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/ehci-orion.c?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/drivers/usb/host/ehci-orion.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>host</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ehci-orion.c?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>ehci-orion.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='252bf9f4c43fd58f96587a97866cb7cc980e7544'/><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'>2017-02-04 10:38:09 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-04 10:38:09 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ehci-orion.c?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>252bf9f4c43fd58f96587a97866cb7cc980e7544</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/host/ehci-orion.c?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>aeff11933ae538381392f91ec10da99e49c61c91</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/host/ehci-orion.c?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>drivers/usb/host/ehci-orion.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ehci-orion.c?id=8fcdcc42a5268f298ac91962a5e816294435006f'>8fcdcc42a5268f298ac91962a5e816294435006f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/ehci-orion.c?id=252bf9f4c43fd58f96587a97866cb7cc980e7544&amp;id2=8fcdcc42a5268f298ac91962a5e816294435006f'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ehci-orion.c?id=b17c1bba9cec1727451b906d9a0c209774624873'>b17c1bba9cec1727451b906d9a0c209774624873</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/ehci-orion.c?id=252bf9f4c43fd58f96587a97866cb7cc980e7544&amp;id2=b17c1bba9cec1727451b906d9a0c209774624873'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'staging-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging</div><div class='commit-msg'>Pull staging/IIO fixes from Greg KH:
 "Here are a few small IIO and one staging driver fix for 4.10-rc7. They
  fix some reported issues with the drivers.

  All of them have been in linux-next for a week or so with no reported
  issues"

* tag 'staging-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: greybus: timesync: validate platform state callback
  iio: dht11: Use usleep_range instead of msleep for start signal
  iio: adc: palmas_gpadc: retrieve a valid iio_dev in suspend/resume
  iio: health: max30100: fixed parenthesis around FIFO count check
  iio: health: afe4404: retrieve a valid iio_dev in suspend/resume
  iio: health: afe4403: retrieve a valid iio_dev in suspend/resume
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=252bf9f4c43fd58f96587a97866cb7cc980e7544'>Diffstat</a> (limited to 'drivers/usb/host/ehci-orion.c')</div><table summary='diffstat' class='diffstat'>