/*
 * Copyright (c) 2015, Sony Mobile Communications Inc.
 * Copyright (c) 2013, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that 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.
 */

#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/soc/qcom/smd.h>

#include "qrtr.h"

struct qrtr_smd_dev {
	struct qrtr_endpoint ep;
	struct qcom_smd_channel *channel;
	struct device *dev;
};

/* from smd to qrtr */
static int qcom_smd_qrtr_callback(struct qcom_smd_channel *channel,
				  const void *data, size_t len)
{
	struct qrtr_smd_dev *qdev = qcom_smd_get_drvdata(channel);
	int rc;

	if (!qdev)
		return -EAGAIN;

	rc = qrtr_endpoint_post(&qdev->ep, data, len);
	if (rc == -EINVAL) {
		dev_err(qdev->dev, "invalid ipcrouter packet\n");
		/* return 0 to let smd drop the packet */
		rc = 0;
	}

	return rc;
}

/* from qrtr to smd */
static int qcom_smd_qrtr_send(struct qrtr_endpoint *ep, struct sk_buff *skb)
{
	struct qrtr_smd_dev *qdev = container_of(ep, struct qrtr_smd_dev, ep);
	int rc;

	rc = skb_linearize(skb);
	if (rc)
		goto out;

	rc = qcom_smd_send(qdev->channel, skb->data, skb->len);

out:
	if (rc)
		kfree_skb(skb);
	else
		consume_skb(skb);
	return rc;
}

static int qcom_smd_qrtr_probe(struct qcom_smd_device *sdev)
{
	struct qrtr_smd_dev *qdev;
	int rc;

	qdev = devm_kzalloc(&sdev->dev, sizeof(*qdev), GFP_KERNEL);
	if (!qdev)
		return -ENOMEM;

	qdev->channel = sdev->channel;
	qdev->dev = &sdev->dev;
	qdev->ep.xmit = qcom_smd_qrtr_send;

	rc = qrtr_endpoint_register(&qdev->ep, QRTR_EP_NID_AUTO);
	if (rc)
		return rc;

	qcom_smd_set_drvdata(sdev->channel, qdev);
	dev_set_drvdata(&sdev->dev, qdev);

	dev_dbg(&sdev->dev, "Qualcomm SMD QRTR driver probed\n");

	return 0;
}

static void qcom_smd_qrtr_remove(struct qcom_smd_device *sdev)
{
	struct qrtr_smd_dev *qdev = dev_get_drvdata(&sdev->dev);

	qrtr_endpoint_unregister(&qdev->ep);

	dev_set_drvdata(&sdev->dev, NULL);
}

static const struct qcom_smd_id qcom_smd_qrtr_smd_match[] = {
	{ "IPCRTR" },
	{}
};

static struct qcom_smd_driver qcom_smd_qrtr_driver = {
	.probe = qcom_smd_qrtr_probe,
	.remove = qcom_smd_qrtr_remove,
	.callback = qcom_smd_qrtr_callback,
	.smd_match_table = qcom_smd_qrtr_smd_match,
	.driver = {
		.name = "qcom_smd_qrtr",
		.owner = THIS_MODULE,
	},
};

module_qcom_smd_driver(qcom_smd_qrtr_driver);

MODULE_DESCRIPTION("Qualcomm IPC-Router SMD interface driver");
MODULE_LICENSE("GPL v2");
 href='/cgit.cgi/linux/net-next.git/commit/include?id=52f5631a4c056ad01682393be56d2be237e81610'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net?id=52f5631a4c056ad01682393be56d2be237e81610'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/inet_frag.h?id=52f5631a4c056ad01682393be56d2be237e81610'>inet_frag.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='52f5631a4c056ad01682393be56d2be237e81610'/><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>Jurij Smakov &lt;jurij@wooyd.org&gt;</td><td class='right'>2017-01-30 15:41:36 -0600</td></tr>
<tr><th>committer</th><td>Kalle Valo &lt;kvalo@codeaurora.org&gt;</td><td class='right'>2017-01-31 09:05:25 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/inet_frag.h?id=52f5631a4c056ad01682393be56d2be237e81610'>52f5631a4c056ad01682393be56d2be237e81610</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/inet_frag.h?id=52f5631a4c056ad01682393be56d2be237e81610'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=52f5631a4c056ad01682393be56d2be237e81610'>53d1ddd2c1b179c808df10b6ce731ad26aa9f31b</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/inet_frag.h?id=52f5631a4c056ad01682393be56d2be237e81610'>include/net/inet_frag.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/inet_frag.h?id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>2b1d530cb3157f828fcaadd259613f59db3c6d1c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/inet_frag.h?id=52f5631a4c056ad01682393be56d2be237e81610&amp;id2=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>diff</a>)</td></tr></table>
<div class='commit-subject'>rtlwifi: rtl8192ce: Fix loading of incorrect firmware</div><div class='commit-msg'>In commit cf4747d7535a ("rtlwifi: Fix regression caused by commit
d86e64768859, an error in the edit results in the wrong firmware
being loaded for some models of the RTL8188/8192CE. In this condition,
the connection suffered from high ping latency, slow transfer rates,
 and required higher signal strengths to work at all

See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=853073,
https://bugzilla.opensuse.org/show_bug.cgi?id=1017471, and
https://github.com/lwfinger/rtlwifi_new/issues/203 for descriptions
of the problems. This patch fixes all of those problems.

Fixes: cf4747d7535a ("rtlwifi: Fix regression caused by commit d86e64768859")
Signed-off-by: Jurij Smakov &lt;jurij@wooyd.org&gt;
Signed-off-by: Larry Finger &lt;Larry.Finger@lwfinger.net&gt;
Cc: Stable &lt;stable@vger.kernel.org&gt; # 4.9+
Signed-off-by: Kalle Valo &lt;kvalo@codeaurora.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=52f5631a4c056ad01682393be56d2be237e81610'>Diffstat</a> (limited to 'include/net/inet_frag.h')</div><table summary='diffstat' class='diffstat'>