[deliverable/linux.git] / drivers / staging / wilc1000 / linux_mon.c

/*!
 *  @file	linux_mon.c
 *  @brief	File Operations OS wrapper functionality
 *  @author	mdaftedar
 *  @sa		wilc_wfi_netdevice.h
 *  @date	01 MAR 2012
 *  @version	1.0
 */
#include "wilc_wfi_cfgoperations.h"
#include "linux_wlan_common.h"
#include "wilc_wlan_if.h"
#include "wilc_wlan.h"


struct wilc_wfi_radiotap_hdr {
	struct ieee80211_radiotap_header hdr;
	u8 rate;
} __attribute__((packed));

struct wilc_wfi_radiotap_cb_hdr {
	struct ieee80211_radiotap_header hdr;
	u8 rate;
	u8 dump;
	u16 tx_flags;
} __attribute__((packed));

extern linux_wlan_t *g_linux_wlan;

static struct net_device *wilc_wfi_mon; /* global monitor netdev */

extern int  mac_xmit(struct sk_buff *skb, struct net_device *dev);


u8 srcAdd[6];
u8 bssid[6];
u8 broadcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
/**
 *  @brief      WILC_WFI_monitor_rx
 *  @details
 *  @param[in]
 *  @return     int : Return 0 on Success
 *  @author	mdaftedar
 *  @date	12 JUL 2012
 *  @version	1.0
 */

#define IEEE80211_RADIOTAP_F_TX_RTS	0x0004  /* used rts/cts handshake */
#define IEEE80211_RADIOTAP_F_TX_FAIL	0x0001  /* failed due to excessive*/
#define IS_MANAGMEMENT				0x100
#define IS_MANAGMEMENT_CALLBACK			0x080
#define IS_MGMT_STATUS_SUCCES			0x040
#define GET_PKT_OFFSET(a) (((a) >> 22) & 0x1ff)

void WILC_WFI_monitor_rx(u8 *buff, u32 size)
{
	u32 header, pkt_offset;
	struct sk_buff *skb = NULL;
	struct wilc_wfi_radiotap_hdr *hdr;
	struct wilc_wfi_radiotap_cb_hdr *cb_hdr;

	PRINT_INFO(HOSTAPD_DBG, "In monitor interface receive function\n");

	/* Bug 4601 */
	if (wilc_wfi_mon == NULL)
		return;

	if (!netif_running(wilc_wfi_mon)) {
		PRINT_INFO(HOSTAPD_DBG, "Monitor interface already RUNNING\n");
		return;
	}

	/* Get WILC header */
	memcpy(&header, (buff - HOST_HDR_OFFSET), HOST_HDR_OFFSET);

	/* The packet offset field conain info about what type of managment frame */
	/* we are dealing with and ack status */
	pkt_offset = GET_PKT_OFFSET(header);

	if (pkt_offset & IS_MANAGMEMENT_CALLBACK) {

		/* hostapd callback mgmt frame */

		skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_cb_hdr));
		if (skb == NULL) {
			PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
			return;
		}

		memcpy(skb_put(skb, size), buff, size);

		cb_hdr = (struct wilc_wfi_radiotap_cb_hdr *) skb_push(skb, sizeof(*cb_hdr));
		memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));

		cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */

		cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));

		cb_hdr->hdr.it_present = cpu_to_le32(
				(1 << IEEE80211_RADIOTAP_RATE) |
				(1 << IEEE80211_RADIOTAP_TX_FLAGS));

		cb_hdr->rate = 5; /* txrate->bitrate / 5; */

		if (pkt_offset & IS_MGMT_STATUS_SUCCES)	{
			/* success */
			cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_RTS;
		} else {
			cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_FAIL;
		}

	} else {

		skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_hdr));

		if (skb == NULL) {
			PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
			return;
		}

		memcpy(skb_put(skb, size), buff, size);
		hdr = (struct wilc_wfi_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
		memset(hdr, 0, sizeof(struct wilc_wfi_radiotap_hdr));
		hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
		hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_hdr));
		PRINT_INFO(HOSTAPD_DBG, "Radiotap len %d\n", hdr->hdr.it_len);
		hdr->hdr.it_present = cpu_to_le32
				(1 << IEEE80211_RADIOTAP_RATE);                   /* | */
		PRINT_INFO(HOSTAPD_DBG, "Presentflags %d\n", hdr->hdr.it_present);
		hdr->rate = 5; /* txrate->bitrate / 5; */

	}


	skb->dev = wilc_wfi_mon;
	skb_set_mac_header(skb, 0);
	skb->ip_summed = CHECKSUM_UNNECESSARY;
	skb->pkt_type = PACKET_OTHERHOST;
	skb->protocol = htons(ETH_P_802_2);
	memset(skb->cb, 0, sizeof(skb->cb));

	netif_rx(skb);


}

struct tx_complete_mon_data {
	int size;
	void *buff;
};

static void mgmt_tx_complete(void *priv, int status)
{

	struct tx_complete_mon_data *pv_data = (struct tx_complete_mon_data *)priv;
	u8 *buf =  pv_data->buff;


	if (status == 1) {
		if (INFO || buf[0] == 0x10 || buf[0] == 0xb0)
			PRINT_INFO(HOSTAPD_DBG, "Packet sent successfully - Size = %d - Address = %p.\n", pv_data->size, pv_data->buff);
	} else {
		PRINT_INFO(HOSTAPD_DBG, "Couldn't send packet - Size = %d - Address = %p.\n", pv_data->size, pv_data->buff);
	}


	/* incase of fully hosting mode, the freeing will be done in response to the cfg packet */
	kfree(pv_data->buff);

	kfree(pv_data);
}
static int mon_mgmt_tx(struct net_device *dev, const u8 *buf, size_t len)
{
	struct tx_complete_mon_data *mgmt_tx = NULL;

	if (dev == NULL) {
		PRINT_D(HOSTAPD_DBG, "ERROR: dev == NULL\n");
		return -EFAULT;
	}

	netif_stop_queue(dev);
	mgmt_tx = kmalloc(sizeof(struct tx_complete_mon_data), GFP_ATOMIC);
	if (mgmt_tx == NULL) {
		PRINT_ER("Failed to allocate memory for mgmt_tx structure\n");
		return -EFAULT;
	}

	mgmt_tx->buff = kmalloc(len, GFP_ATOMIC);
	if (mgmt_tx->buff == NULL) {
		PRINT_ER("Failed to allocate memory for mgmt_tx buff\n");
		kfree(mgmt_tx);
		return -EFAULT;

	}

	mgmt_tx->size = len;

	memcpy(mgmt_tx->buff, buf, len);
	g_linux_wlan->oup.wlan_add_mgmt_to_tx_que(mgmt_tx, mgmt_tx->buff, mgmt_tx->size, mgmt_tx_complete);

	netif_wake_queue(dev);
	return 0;
}

/**
 *  @brief      WILC_WFI_mon_xmit
 *  @details
 *  @param[in]
 *  @return     int : Return 0 on Success
 *  @author	mdaftedar
 *  @date	12 JUL 2012
 *  @version	1.0
 */
static netdev_tx_t WILC_WFI_mon_xmit(struct sk_buff *skb,
				     struct net_device *dev)
{
	u32 rtap_len, i, ret = 0;
	struct WILC_WFI_mon_priv  *mon_priv;

	struct sk_buff *skb2;
	struct wilc_wfi_radiotap_cb_hdr *cb_hdr;

	/* Bug 4601 */
	if (wilc_wfi_mon == NULL)
		return -EFAULT;

	mon_priv = netdev_priv(wilc_wfi_mon);

	if (mon_priv == NULL) {
		PRINT_ER("Monitor interface private structure is NULL\n");
		return -EFAULT;
	}


	rtap_len = ieee80211_get_radiotap_len(skb->data);
	if (skb->len < rtap_len) {
		PRINT_ER("Error in radiotap header\n");
		return -1;
	}
	/* skip the radiotap header */
	PRINT_INFO(HOSTAPD_DBG, "Radiotap len: %d\n", rtap_len);

	if (INFO) {
		for (i = 0; i < rtap_len; i++)
			PRINT_INFO(HOSTAPD_DBG, "Radiotap_hdr[%d] %02x\n", i, skb->data[i]);
	}
	/* Skip the ratio tap header */
	skb_pull(skb, rtap_len);

	if (skb->data[0] == 0xc0)
		PRINT_INFO(HOSTAPD_DBG, "%x:%x:%x:%x:%x%x\n", skb->data[4], skb->data[5], skb->data[6], skb->data[7], skb->data[8], skb->data[9]);

	if (skb->data[0] == 0xc0 && (!(memcmp(broadcast, &skb->data[4], 6)))) {
		skb2 = dev_alloc_skb(skb->len + sizeof(struct wilc_wfi_radiotap_cb_hdr));

		memcpy(skb_put(skb2, skb->len), skb->data, skb->len);

		cb_hdr = (struct wilc_wfi_radiotap_cb_hdr *) skb_push(skb2, sizeof(*cb_hdr));
		memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));

		cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */

		cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));

		cb_hdr->hdr.it_present = cpu_to_le32(
				(1 << IEEE80211_RADIOTAP_RATE) |
				(1 << IEEE80211_RADIOTAP_TX_FLAGS));

		cb_hdr->rate = 5; /* txrate->bitrate / 5; */
		cb_hdr->tx_flags = 0x0004;

		skb2->dev = wilc_wfi_mon;
		skb_set_mac_header(skb2, 0);
		skb2->ip_summed = CHECKSUM_UNNECESSARY;
		skb2->pkt_type = PACKET_OTHERHOST;
		skb2->protocol = htons(ETH_P_802_2);
		memset(skb2->cb, 0, sizeof(skb2->cb));

		netif_rx(skb2);

		return 0;
	}
	skb->dev = mon_priv->real_ndev;

	PRINT_INFO(HOSTAPD_DBG, "Skipping the radiotap header\n");


	/* actual deliver of data is device-specific, and not shown here */
	PRINT_INFO(HOSTAPD_DBG, "SKB netdevice name = %s\n", skb->dev->name);
	PRINT_INFO(HOSTAPD_DBG, "MONITOR real dev name = %s\n", mon_priv->real_ndev->name);

	/* Identify if Ethernet or MAC header (data or mgmt) */
	memcpy(srcAdd, &skb->data[10], 6);
	memcpy(bssid, &skb->data[16], 6);
	/* if source address and bssid fields are equal>>Mac header */
	/*send it to mgmt frames handler */
	if (!(memcmp(srcAdd, bssid, 6))) {
		mon_mgmt_tx(mon_priv->real_ndev, skb->data, skb->len);
		dev_kfree_skb(skb);
	} else
		ret = mac_xmit(skb, mon_priv->real_ndev);

	return ret;
}

static const struct net_device_ops wilc_wfi_netdev_ops = {
	.ndo_start_xmit         = WILC_WFI_mon_xmit,

};

/**
 *  @brief      WILC_WFI_mon_setup
 *  @details
 *  @param[in]
 *  @return     int : Return 0 on Success
 *  @author	mdaftedar
 *  @date	12 JUL 2012
 *  @version	1.0
 */
static void WILC_WFI_mon_setup(struct net_device *dev)
{

	dev->netdev_ops = &wilc_wfi_netdev_ops;
	PRINT_INFO(CORECONFIG_DBG, "In Ethernet setup function\n");
	ether_setup(dev);
	dev->priv_flags |= IFF_NO_QUEUE;
	dev->type = ARPHRD_IEEE80211_RADIOTAP;
	eth_zero_addr(dev->dev_addr);

	{
		unsigned char mac_add[] = {0x00, 0x50, 0xc2, 0x5e, 0x10, 0x8f};
		memcpy(dev->dev_addr, mac_add, ETH_ALEN);
	}

}

/**
 *  @brief      WILC_WFI_init_mon_interface
 *  @details
 *  @param[in]
 *  @return     int : Return 0 on Success
 *  @author	mdaftedar
 *  @date	12 JUL 2012
 *  @version	1.0
 */
struct net_device *WILC_WFI_init_mon_interface(const char *name, struct net_device *real_dev)
{


	u32 ret = 0;
	struct WILC_WFI_mon_priv *priv;

	/*If monitor interface is already initialized, return it*/
	if (wilc_wfi_mon) {
		return wilc_wfi_mon;
	}

	wilc_wfi_mon = alloc_etherdev(sizeof(struct WILC_WFI_mon_priv));
	if (!wilc_wfi_mon) {
		PRINT_ER("failed to allocate memory\n");
		return NULL;

	}

	wilc_wfi_mon->type = ARPHRD_IEEE80211_RADIOTAP;
	strncpy(wilc_wfi_mon->name, name, IFNAMSIZ);
	wilc_wfi_mon->name[IFNAMSIZ - 1] = 0;
	wilc_wfi_mon->netdev_ops = &wilc_wfi_netdev_ops;

	ret = register_netdevice(wilc_wfi_mon);
	if (ret) {
		PRINT_ER(" register_netdevice failed (%d)\n", ret);
		return NULL;
	}
	priv = netdev_priv(wilc_wfi_mon);
	if (priv == NULL) {
		PRINT_ER("private structure is NULL\n");
		return NULL;
	}

	priv->real_ndev = real_dev;

	return wilc_wfi_mon;
}

/**
 *  @brief      WILC_WFI_deinit_mon_interface
 *  @details
 *  @param[in]
 *  @return     int : Return 0 on Success
 *  @author	mdaftedar
 *  @date	12 JUL 2012
 *  @version	1.0
 */
int WILC_WFI_deinit_mon_interface(void)
{
	bool rollback_lock = false;

	if (wilc_wfi_mon != NULL) {
		PRINT_D(HOSTAPD_DBG, "In Deinit monitor interface\n");
		PRINT_D(HOSTAPD_DBG, "RTNL is being locked\n");
		if (rtnl_is_locked()) {
			rtnl_unlock();
			rollback_lock = true;
		}
		PRINT_D(HOSTAPD_DBG, "Unregister netdev\n");
		unregister_netdev(wilc_wfi_mon);

		if (rollback_lock) {
			rtnl_lock();
			rollback_lock = false;
		}
		wilc_wfi_mon = NULL;
	}
	return 0;

}
Commit	Line	Data
c5c77ba1 JK	1	/*!
	2	* @file linux_mon.c
	3	* @brief File Operations OS wrapper functionality
	4	* @author mdaftedar
	5	* @sa wilc_wfi_netdevice.h
	6	* @date 01 MAR 2012
	7	* @version 1.0
	8	*/
c5c77ba1 JK	9	#include "wilc_wfi_cfgoperations.h"
	10	#include "linux_wlan_common.h"
	11	#include "wilc_wlan_if.h"
	12	#include "wilc_wlan.h"
9690df3f	13
c5c77ba1 JK	14
	15	struct wilc_wfi_radiotap_hdr {
	16	struct ieee80211_radiotap_header hdr;
	17	u8 rate;
c5c77ba1 JK	18	} __attribute__((packed));
	19
	20	struct wilc_wfi_radiotap_cb_hdr {
	21	struct ieee80211_radiotap_header hdr;
	22	u8 rate;
	23	u8 dump;
	24	u16 tx_flags;
c5c77ba1 JK	25	} __attribute__((packed));
	26
	27	extern linux_wlan_t *g_linux_wlan;
	28
	29	static struct net_device wilc_wfi_mon; / global monitor netdev */
	30
c5c77ba1	31	extern int mac_xmit(struct sk_buff skb, struct net_device dev);
c5c77ba1 JK	32
c5c77ba1 JK	33
63d03e47 GKH	34	u8 srcAdd[6];
	35	u8 bssid[6];
	36	u8 broadcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
c5c77ba1 JK	37	/**
	38	* @brief WILC_WFI_monitor_rx
	39	* @details
	40	* @param[in]
	41	* @return int : Return 0 on Success
	42	* @author mdaftedar
	43	* @date 12 JUL 2012
	44	* @version 1.0
	45	*/
	46
	47	#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */
	48	#define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001 /* failed due to excessive*/
	49	#define IS_MANAGMEMENT 0x100
	50	#define IS_MANAGMEMENT_CALLBACK 0x080
	51	#define IS_MGMT_STATUS_SUCCES 0x040
	52	#define GET_PKT_OFFSET(a) (((a) >> 22) & 0x1ff)
	53
fbc2fe16	54	void WILC_WFI_monitor_rx(u8 *buff, u32 size)
c5c77ba1	55	{
fbc2fe16	56	u32 header, pkt_offset;
c5c77ba1 JK	57	struct sk_buff *skb = NULL;
	58	struct wilc_wfi_radiotap_hdr *hdr;
	59	struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
	60
	61	PRINT_INFO(HOSTAPD_DBG, "In monitor interface receive function\n");
	62
c5c77ba1 JK	63	/* Bug 4601 */
	64	if (wilc_wfi_mon == NULL)
	65	return;
	66
	67	if (!netif_running(wilc_wfi_mon)) {
	68	PRINT_INFO(HOSTAPD_DBG, "Monitor interface already RUNNING\n");
	69	return;
	70	}
	71
	72	/* Get WILC header */
	73	memcpy(&header, (buff - HOST_HDR_OFFSET), HOST_HDR_OFFSET);
	74
	75	/* The packet offset field conain info about what type of managment frame */
	76	/* we are dealing with and ack status */
	77	pkt_offset = GET_PKT_OFFSET(header);
	78
	79	if (pkt_offset & IS_MANAGMEMENT_CALLBACK) {
	80
	81	/* hostapd callback mgmt frame */
	82
	83	skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_cb_hdr));
	84	if (skb == NULL) {
	85	PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
	86	return;
	87	}
	88
	89	memcpy(skb_put(skb, size), buff, size);
	90
	91	cb_hdr = (struct wilc_wfi_radiotap_cb_hdr ) skb_push(skb, sizeof(cb_hdr));
	92	memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
	93
	94	cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
	95
	96	cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));
	97
	98	cb_hdr->hdr.it_present = cpu_to_le32(
	99	(1 << IEEE80211_RADIOTAP_RATE) \|
	100	(1 << IEEE80211_RADIOTAP_TX_FLAGS));
	101
	102	cb_hdr->rate = 5; /* txrate->bitrate / 5; */
	103
	104	if (pkt_offset & IS_MGMT_STATUS_SUCCES) {
	105	/* success */
	106	cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_RTS;
	107	} else {
	108	cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_FAIL;
	109	}
	110
	111	} else {
	112
	113	skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_hdr));
	114
	115	if (skb == NULL) {
	116	PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
	117	return;
	118	}
	119
c5c77ba1 JK	120	memcpy(skb_put(skb, size), buff, size);
	121	hdr = (struct wilc_wfi_radiotap_hdr ) skb_push(skb, sizeof(hdr));
	122	memset(hdr, 0, sizeof(struct wilc_wfi_radiotap_hdr));
	123	hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
c5c77ba1 JK	124	hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_hdr));
	125	PRINT_INFO(HOSTAPD_DBG, "Radiotap len %d\n", hdr->hdr.it_len);
	126	hdr->hdr.it_present = cpu_to_le32
	127	(1 << IEEE80211_RADIOTAP_RATE); /* \| */
c5c77ba1 JK	128	PRINT_INFO(HOSTAPD_DBG, "Presentflags %d\n", hdr->hdr.it_present);
	129	hdr->rate = 5; /* txrate->bitrate / 5; */
	130
	131	}
	132
c5c77ba1 JK	133
	134
	135	skb->dev = wilc_wfi_mon;
	136	skb_set_mac_header(skb, 0);
	137	skb->ip_summed = CHECKSUM_UNNECESSARY;
	138	skb->pkt_type = PACKET_OTHERHOST;
	139	skb->protocol = htons(ETH_P_802_2);
	140	memset(skb->cb, 0, sizeof(skb->cb));
	141
	142	netif_rx(skb);
	143
	144
	145	}
	146
	147	struct tx_complete_mon_data {
	148	int size;
	149	void *buff;
	150	};
	151
	152	static void mgmt_tx_complete(void *priv, int status)
	153	{
	154
c5c77ba1	155	struct tx_complete_mon_data pv_data = (struct tx_complete_mon_data )priv;
63d03e47	156	u8 *buf = pv_data->buff;
c5c77ba1 JK	157
	158
	159
	160	if (status == 1) {
	161	if (INFO \|\| buf[0] == 0x10 \|\| buf[0] == 0xb0)
	162	PRINT_INFO(HOSTAPD_DBG, "Packet sent successfully - Size = %d - Address = %p.\n", pv_data->size, pv_data->buff);
	163	} else {
	164	PRINT_INFO(HOSTAPD_DBG, "Couldn't send packet - Size = %d - Address = %p.\n", pv_data->size, pv_data->buff);
	165	}
	166
	167
c5c77ba1 JK	168
c5c77ba1 JK	169	/* incase of fully hosting mode, the freeing will be done in response to the cfg packet */
c5c77ba1 JK	170	kfree(pv_data->buff);
	171
	172	kfree(pv_data);
c5c77ba1 JK	173	}
	174	static int mon_mgmt_tx(struct net_device dev, const u8 buf, size_t len)
	175	{
c5c77ba1 JK	176	struct tx_complete_mon_data *mgmt_tx = NULL;
	177
	178	if (dev == NULL) {
	179	PRINT_D(HOSTAPD_DBG, "ERROR: dev == NULL\n");
e6e12661	180	return -EFAULT;
c5c77ba1	181	}
c5c77ba1 JK	182
c5c77ba1 JK	183	netif_stop_queue(dev);
25fe2274	184	mgmt_tx = kmalloc(sizeof(struct tx_complete_mon_data), GFP_ATOMIC);
c5c77ba1 JK	185	if (mgmt_tx == NULL) {
c5c77ba1 JK	186	PRINT_ER("Failed to allocate memory for mgmt_tx structure\n");
e6e12661	187	return -EFAULT;
c5c77ba1 JK	188	}
c5c77ba1 JK	189
30ef5c8b	190	mgmt_tx->buff = kmalloc(len, GFP_ATOMIC);
c5c77ba1 JK	191	if (mgmt_tx->buff == NULL) {
c5c77ba1 JK	192	PRINT_ER("Failed to allocate memory for mgmt_tx buff\n");
f638dd39	193	kfree(mgmt_tx);
e6e12661	194	return -EFAULT;
c5c77ba1 JK	195
	196	}
	197
	198	mgmt_tx->size = len;
	199
c5c77ba1	200	memcpy(mgmt_tx->buff, buf, len);
c5c77ba1 JK	201	g_linux_wlan->oup.wlan_add_mgmt_to_tx_que(mgmt_tx, mgmt_tx->buff, mgmt_tx->size, mgmt_tx_complete);
	202
	203	netif_wake_queue(dev);
	204	return 0;
	205	}
	206
	207	/**
	208	* @brief WILC_WFI_mon_xmit
	209	* @details
	210	* @param[in]
	211	* @return int : Return 0 on Success
	212	* @author mdaftedar
	213	* @date 12 JUL 2012
	214	* @version 1.0
	215	*/
	216	static netdev_tx_t WILC_WFI_mon_xmit(struct sk_buff *skb,
	217	struct net_device *dev)
	218	{
4e4467fd	219	u32 rtap_len, i, ret = 0;
c5c77ba1 JK	220	struct WILC_WFI_mon_priv *mon_priv;
	221
	222	struct sk_buff *skb2;
	223	struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
	224
	225	/* Bug 4601 */
	226	if (wilc_wfi_mon == NULL)
e6e12661	227	return -EFAULT;
c5c77ba1	228
c5c77ba1 JK	229	mon_priv = netdev_priv(wilc_wfi_mon);
	230
	231	if (mon_priv == NULL) {
	232	PRINT_ER("Monitor interface private structure is NULL\n");
e6e12661	233	return -EFAULT;
c5c77ba1 JK	234	}
c5c77ba1 JK	235
c5c77ba1 JK	236
	237	rtap_len = ieee80211_get_radiotap_len(skb->data);
	238	if (skb->len < rtap_len) {
	239	PRINT_ER("Error in radiotap header\n");
	240	return -1;
	241	}
	242	/* skip the radiotap header */
	243	PRINT_INFO(HOSTAPD_DBG, "Radiotap len: %d\n", rtap_len);
	244
	245	if (INFO) {
	246	for (i = 0; i < rtap_len; i++)
	247	PRINT_INFO(HOSTAPD_DBG, "Radiotap_hdr[%d] %02x\n", i, skb->data[i]);
	248	}
	249	/* Skip the ratio tap header */
	250	skb_pull(skb, rtap_len);
	251
	252	if (skb->data[0] == 0xc0)
	253	PRINT_INFO(HOSTAPD_DBG, "%x:%x:%x:%x:%x%x\n", skb->data[4], skb->data[5], skb->data[6], skb->data[7], skb->data[8], skb->data[9]);
	254
	255	if (skb->data[0] == 0xc0 && (!(memcmp(broadcast, &skb->data[4], 6)))) {
	256	skb2 = dev_alloc_skb(skb->len + sizeof(struct wilc_wfi_radiotap_cb_hdr));
	257
	258	memcpy(skb_put(skb2, skb->len), skb->data, skb->len);
	259
	260	cb_hdr = (struct wilc_wfi_radiotap_cb_hdr ) skb_push(skb2, sizeof(cb_hdr));
	261	memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
	262
	263	cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
	264
	265	cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));
	266
	267	cb_hdr->hdr.it_present = cpu_to_le32(
	268	(1 << IEEE80211_RADIOTAP_RATE) \|
	269	(1 << IEEE80211_RADIOTAP_TX_FLAGS));
	270
	271	cb_hdr->rate = 5; /* txrate->bitrate / 5; */
	272	cb_hdr->tx_flags = 0x0004;
	273
	274	skb2->dev = wilc_wfi_mon;
	275	skb_set_mac_header(skb2, 0);
	276	skb2->ip_summed = CHECKSUM_UNNECESSARY;
	277	skb2->pkt_type = PACKET_OTHERHOST;
	278	skb2->protocol = htons(ETH_P_802_2);
	279	memset(skb2->cb, 0, sizeof(skb2->cb));
	280
	281	netif_rx(skb2);
	282
	283	return 0;
	284	}
	285	skb->dev = mon_priv->real_ndev;
	286
	287	PRINT_INFO(HOSTAPD_DBG, "Skipping the radiotap header\n");
	288
	289
	290
	291	/* actual deliver of data is device-specific, and not shown here */
	292	PRINT_INFO(HOSTAPD_DBG, "SKB netdevice name = %s\n", skb->dev->name);
	293	PRINT_INFO(HOSTAPD_DBG, "MONITOR real dev name = %s\n", mon_priv->real_ndev->name);
	294
c5c77ba1 JK	295	/* Identify if Ethernet or MAC header (data or mgmt) */
	296	memcpy(srcAdd, &skb->data[10], 6);
	297	memcpy(bssid, &skb->data[16], 6);
	298	/* if source address and bssid fields are equal>>Mac header */
	299	/send it to mgmt frames handler /
	300	if (!(memcmp(srcAdd, bssid, 6))) {
	301	mon_mgmt_tx(mon_priv->real_ndev, skb->data, skb->len);
	302	dev_kfree_skb(skb);
	303	} else
	304	ret = mac_xmit(skb, mon_priv->real_ndev);
c5c77ba1	305
c5c77ba1 JK	306	return ret;
	307	}
	308
	309	static const struct net_device_ops wilc_wfi_netdev_ops = {
	310	.ndo_start_xmit = WILC_WFI_mon_xmit,
	311
	312	};
	313
c5c77ba1 JK	314	/**
	315	* @brief WILC_WFI_mon_setup
	316	* @details
	317	* @param[in]
	318	* @return int : Return 0 on Success
	319	* @author mdaftedar
	320	* @date 12 JUL 2012
	321	* @version 1.0
	322	*/
	323	static void WILC_WFI_mon_setup(struct net_device *dev)
	324	{
	325
	326	dev->netdev_ops = &wilc_wfi_netdev_ops;
c5c77ba1 JK	327	PRINT_INFO(CORECONFIG_DBG, "In Ethernet setup function\n");
c5c77ba1 JK	328	ether_setup(dev);
7d9e437d	329	dev->priv_flags \|= IFF_NO_QUEUE;
c5c77ba1	330	dev->type = ARPHRD_IEEE80211_RADIOTAP;
8ca1b55a	331	eth_zero_addr(dev->dev_addr);
c5c77ba1	332
c5c77ba1	333	{
c5c77ba1	334	unsigned char mac_add[] = {0x00, 0x50, 0xc2, 0x5e, 0x10, 0x8f};
c5c77ba1 JK	335	memcpy(dev->dev_addr, mac_add, ETH_ALEN);
c5c77ba1 JK	336	}
c5c77ba1 JK	337
	338	}
	339
	340	/**
	341	* @brief WILC_WFI_init_mon_interface
	342	* @details
	343	* @param[in]
	344	* @return int : Return 0 on Success
	345	* @author mdaftedar
	346	* @date 12 JUL 2012
	347	* @version 1.0
	348	*/
057d1e97	349	struct net_device WILC_WFI_init_mon_interface(const char name, struct net_device *real_dev)
c5c77ba1 JK	350	{
	351
	352
e6e12661	353	u32 ret = 0;
c5c77ba1 JK	354	struct WILC_WFI_mon_priv *priv;
	355
	356	/If monitor interface is already initialized, return it/
	357	if (wilc_wfi_mon) {
	358	return wilc_wfi_mon;
	359	}
c5c77ba1 JK	360
	361	wilc_wfi_mon = alloc_etherdev(sizeof(struct WILC_WFI_mon_priv));
	362	if (!wilc_wfi_mon) {
	363	PRINT_ER("failed to allocate memory\n");
	364	return NULL;
	365
	366	}
	367
	368	wilc_wfi_mon->type = ARPHRD_IEEE80211_RADIOTAP;
	369	strncpy(wilc_wfi_mon->name, name, IFNAMSIZ);
	370	wilc_wfi_mon->name[IFNAMSIZ - 1] = 0;
	371	wilc_wfi_mon->netdev_ops = &wilc_wfi_netdev_ops;
	372
	373	ret = register_netdevice(wilc_wfi_mon);
	374	if (ret) {
	375	PRINT_ER(" register_netdevice failed (%d)\n", ret);
	376	return NULL;
	377	}
	378	priv = netdev_priv(wilc_wfi_mon);
	379	if (priv == NULL) {
	380	PRINT_ER("private structure is NULL\n");
	381	return NULL;
	382	}
	383
	384	priv->real_ndev = real_dev;
	385
	386	return wilc_wfi_mon;
	387	}
	388
	389	/**
	390	* @brief WILC_WFI_deinit_mon_interface
	391	* @details
	392	* @param[in]
	393	* @return int : Return 0 on Success
	394	* @author mdaftedar
	395	* @date 12 JUL 2012
	396	* @version 1.0
	397	*/
a96c47e1	398	int WILC_WFI_deinit_mon_interface(void)
c5c77ba1 JK	399	{
	400	bool rollback_lock = false;
	401
	402	if (wilc_wfi_mon != NULL) {
	403	PRINT_D(HOSTAPD_DBG, "In Deinit monitor interface\n");
	404	PRINT_D(HOSTAPD_DBG, "RTNL is being locked\n");
	405	if (rtnl_is_locked()) {
	406	rtnl_unlock();
	407	rollback_lock = true;
	408	}
	409	PRINT_D(HOSTAPD_DBG, "Unregister netdev\n");
	410	unregister_netdev(wilc_wfi_mon);
c5c77ba1 JK	411
	412	if (rollback_lock) {
	413	rtnl_lock();
	414	rollback_lock = false;
	415	}
	416	wilc_wfi_mon = NULL;
	417	}
e6e12661	418	return 0;
c5c77ba1 JK	419
c5c77ba1 JK	420	}