/*
 * Freescale QUICC Engine USB Host Controller Driver
 *
 * Copyright (c) Freescale Semicondutor, Inc. 2006.
 *               Shlomi Gridish <gridish@freescale.com>
 *               Jerry Huang <Chang-Ming.Huang@freescale.com>
 * Copyright (c) Logic Product Development, Inc. 2007
 *               Peter Barada <peterb@logicpd.com>
 * Copyright (c) MontaVista Software, Inc. 2008.
 *               Anton Vorontsov <avorontsov@ru.mvista.com>
 *
 * 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.
 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include "fhci.h"

static void init_td(struct td *td)
{
	memset(td, 0, sizeof(*td));
	INIT_LIST_HEAD(&td->node);
	INIT_LIST_HEAD(&td->frame_lh);
}

static void init_ed(struct ed *ed)
{
	memset(ed, 0, sizeof(*ed));
	INIT_LIST_HEAD(&ed->td_list);
	INIT_LIST_HEAD(&ed->node);
}

static struct td *get_empty_td(struct fhci_hcd *fhci)
{
	struct td *td;

	if (!list_empty(&fhci->empty_tds)) {
		td = list_entry(fhci->empty_tds.next, struct td, node);
		list_del(fhci->empty_tds.next);
	} else {
		td = kmalloc(sizeof(*td), GFP_ATOMIC);
		if (!td)
			fhci_err(fhci, "No memory to allocate to TD\n");
		else
			init_td(td);
	}

	return td;
}

void fhci_recycle_empty_td(struct fhci_hcd *fhci, struct td *td)
{
	init_td(td);
	list_add(&td->node, &fhci->empty_tds);
}

struct ed *fhci_get_empty_ed(struct fhci_hcd *fhci)
{
	struct ed *ed;

	if (!list_empty(&fhci->empty_eds)) {
		ed = list_entry(fhci->empty_eds.next, struct ed, node);
		list_del(fhci->empty_eds.next);
	} else {
		ed = kmalloc(sizeof(*ed), GFP_ATOMIC);
		if (!ed)
			fhci_err(fhci, "No memory to allocate to ED\n");
		else
			init_ed(ed);
	}

	return ed;
}

void fhci_recycle_empty_ed(struct fhci_hcd *fhci, struct ed *ed)
{
	init_ed(ed);
	list_add(&ed->node, &fhci->empty_eds);
}

struct td *fhci_td_fill(struct fhci_hcd *fhci, struct urb *urb,
			struct urb_priv *urb_priv, struct ed *ed, u16 index,
			enum fhci_ta_type type, int toggle, u8 *data, u32 len,
			u16 interval, u16 start_frame, bool ioc)
{
	struct td *td = get_empty_td(fhci);

	if (!td)
		return NULL;

	td->urb = urb;
	td->ed = ed;
	td->type = type;
	td->toggle = toggle;
	td->data = data;
	td->len = len;
	td->iso_index = index;
	td->interval = interval;
	td->start_frame = start_frame;
	td->ioc = ioc;
	td->status = USB_TD_OK;

	urb_priv->tds[index] = td;

	return td;
}
f='/cgit.cgi/linux/net-next.git/commit/?id=10435c1192d06bdb0bac7666452d8219d7e7c477'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=10435c1192d06bdb0bac7666452d8219d7e7c477'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net?id=10435c1192d06bdb0bac7666452d8219d7e7c477'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/xfrm.h?id=10435c1192d06bdb0bac7666452d8219d7e7c477'>xfrm.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='10435c1192d06bdb0bac7666452d8219d7e7c477'/><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>Feng &lt;fgao@ikuai8.com&gt;</td><td class='right'>2017-01-20 21:40:43 +0800</td></tr>
<tr><th>committer</th><td>Pablo Neira Ayuso &lt;pablo@netfilter.org&gt;</td><td class='right'>2017-02-02 14:30:19 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/xfrm.h?id=10435c1192d06bdb0bac7666452d8219d7e7c477'>10435c1192d06bdb0bac7666452d8219d7e7c477</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/xfrm.h?id=10435c1192d06bdb0bac7666452d8219d7e7c477'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=10435c1192d06bdb0bac7666452d8219d7e7c477'>93b76419142fe17b1d162d062c663297a3e8a965</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/xfrm.h?id=10435c1192d06bdb0bac7666452d8219d7e7c477'>include/net/xfrm.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/xfrm.h?id=1a28ad74ebd8f9d3c7eae0d781f72a6d30545e17'>1a28ad74ebd8f9d3c7eae0d781f72a6d30545e17</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/xfrm.h?id=10435c1192d06bdb0bac7666452d8219d7e7c477&amp;id2=1a28ad74ebd8f9d3c7eae0d781f72a6d30545e17'>diff</a>)</td></tr></table>
<div class='commit-subject'>netfilter: nf_tables: Eliminate duplicated code in nf_tables_table_enable()</div><div class='commit-msg'>If something fails in nf_tables_table_enable(), it unregisters the
chains. But the rollback code is the same as nf_tables_table_disable()
almostly, except there is one counter check.  Now create one wrapper
function to eliminate the duplicated codes.

Signed-off-by: Feng &lt;fgao@ikuai8.com&gt;
Signed-off-by: Pablo Neira Ayuso &lt;pablo@netfilter.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=10435c1192d06bdb0bac7666452d8219d7e7c477'>Diffstat</a> (limited to 'include/net/xfrm.h')</div><table summary='diffstat' class='diffstat'>