Merge "msm: ipa: add exception handler to teth_bridge"

/* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.

/* Copyright (c) 2013-2015, 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

#include <linux/skbuff.h>

#include <linux/types.h>

#include <linux/ipa.h>

#include <linux/netdevice.h>

#include "ipa_i.h"

#define TETH_BRIDGE_DRV_NAME "ipa_tethering_bridge"

};

static struct teth_bridge_ctx *teth_ctx;

/**

* teth_bridge_ipa_cb() - Callback to handle IPA data path events

* @priv - private data

* @evt - event type

* @data - event specific data (usually skb)

*

* This callback is called by IPA driver for exception packets from USB.

* All exception packets are handled by Q6 and should not reach this function.

* Packets will arrive to AP exception pipe only in case where packets are

* sent from USB before Q6 has setup the call.

*/

static void teth_bridge_ipa_cb(void *priv, enum ipa_dp_evt_type evt,

	unsigned long data)

{

	struct sk_buff *skb = (struct sk_buff *)data;

	TETH_DBG_FUNC_ENTRY();

	if (evt != IPA_RECEIVE) {

		TETH_ERR("unexpected event %d\n", evt);

		WARN_ON(1);

		return;

	}

	TETH_ERR("Unexpected exception packet from USB, dropping packet\n");

	dev_kfree_skb_any(skb);

	TETH_DBG_FUNC_EXIT();

}

/**

* teth_bridge_init() - Initialize the Tethering bridge driver

* @params - in/out params for USB initialization API (please look at struct

		return -EINVAL;

	}

	params->usb_notify_cb = NULL;

	params->usb_notify_cb = teth_bridge_ipa_cb;

	params->private_data = NULL;

	params->skip_ep_cfg = true;