[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"

#ifdef WILC_AP_EXTERNAL_MLME

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 WILC_FAIL;
	}

	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 WILC_FAIL;
	}

	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 WILC_FAIL;

	}

	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 WILC_FAIL;

	mon_priv = netdev_priv(wilc_wfi_mon);

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


	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 = WILC_SUCCESS;
	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 WILC_SUCCESS;

}
#endif /* WILC_AP_EXTERNAL_MLME */
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	14	#ifdef WILC_AP_EXTERNAL_MLME
c5c77ba1 JK	15
	16	struct wilc_wfi_radiotap_hdr {
	17	struct ieee80211_radiotap_header hdr;
	18	u8 rate;
c5c77ba1 JK	19	} __attribute__((packed));
	20
	21	struct wilc_wfi_radiotap_cb_hdr {
	22	struct ieee80211_radiotap_header hdr;
	23	u8 rate;
	24	u8 dump;
	25	u16 tx_flags;
c5c77ba1 JK	26	} __attribute__((packed));
	27
	28	extern linux_wlan_t *g_linux_wlan;
	29
	30	static struct net_device wilc_wfi_mon; / global monitor netdev */
	31
c5c77ba1	32	extern int mac_xmit(struct sk_buff skb, struct net_device dev);
c5c77ba1 JK	33
c5c77ba1 JK	34
63d03e47 GKH	35	u8 srcAdd[6];
	36	u8 bssid[6];
	37	u8 broadcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
c5c77ba1 JK	38	/**
	39	* @brief WILC_WFI_monitor_rx
	40	* @details
	41	* @param[in]
	42	* @return int : Return 0 on Success
	43	* @author mdaftedar
	44	* @date 12 JUL 2012
	45	* @version 1.0
	46	*/
	47
	48	#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */
	49	#define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001 /* failed due to excessive*/
	50	#define IS_MANAGMEMENT 0x100
	51	#define IS_MANAGMEMENT_CALLBACK 0x080
	52	#define IS_MGMT_STATUS_SUCCES 0x040
	53	#define GET_PKT_OFFSET(a) (((a) >> 22) & 0x1ff)
	54
fbc2fe16	55	void WILC_WFI_monitor_rx(u8 *buff, u32 size)
c5c77ba1	56	{
fbc2fe16	57	u32 header, pkt_offset;
c5c77ba1 JK	58	struct sk_buff *skb = NULL;
	59	struct wilc_wfi_radiotap_hdr *hdr;
	60	struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
	61
	62	PRINT_INFO(HOSTAPD_DBG, "In monitor interface receive function\n");
	63
c5c77ba1 JK	64	/* Bug 4601 */
	65	if (wilc_wfi_mon == NULL)
	66	return;
	67
	68	if (!netif_running(wilc_wfi_mon)) {
	69	PRINT_INFO(HOSTAPD_DBG, "Monitor interface already RUNNING\n");
	70	return;
	71	}
	72
	73	/* Get WILC header */
	74	memcpy(&header, (buff - HOST_HDR_OFFSET), HOST_HDR_OFFSET);
	75
	76	/* The packet offset field conain info about what type of managment frame */
	77	/* we are dealing with and ack status */
	78	pkt_offset = GET_PKT_OFFSET(header);
	79
	80	if (pkt_offset & IS_MANAGMEMENT_CALLBACK) {
	81
	82	/* hostapd callback mgmt frame */
	83
	84	skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_cb_hdr));
	85	if (skb == NULL) {
	86	PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
	87	return;
	88	}
	89
	90	memcpy(skb_put(skb, size), buff, size);
	91
	92	cb_hdr = (struct wilc_wfi_radiotap_cb_hdr ) skb_push(skb, sizeof(cb_hdr));
	93	memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
	94
	95	cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
	96
	97	cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));
	98
	99	cb_hdr->hdr.it_present = cpu_to_le32(
	100	(1 << IEEE80211_RADIOTAP_RATE) \|
	101	(1 << IEEE80211_RADIOTAP_TX_FLAGS));
	102
	103	cb_hdr->rate = 5; /* txrate->bitrate / 5; */
	104
	105	if (pkt_offset & IS_MGMT_STATUS_SUCCES) {
	106	/* success */
	107	cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_RTS;
	108	} else {
	109	cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_FAIL;
	110	}
	111
	112	} else {
	113
	114	skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_hdr));
	115
	116	if (skb == NULL) {
	117	PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
	118	return;
	119	}
	120
c5c77ba1 JK	121	memcpy(skb_put(skb, size), buff, size);
	122	hdr = (struct wilc_wfi_radiotap_hdr ) skb_push(skb, sizeof(hdr));
	123	memset(hdr, 0, sizeof(struct wilc_wfi_radiotap_hdr));
	124	hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
c5c77ba1 JK	125	hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_hdr));
	126	PRINT_INFO(HOSTAPD_DBG, "Radiotap len %d\n", hdr->hdr.it_len);
	127	hdr->hdr.it_present = cpu_to_le32
	128	(1 << IEEE80211_RADIOTAP_RATE); /* \| */
c5c77ba1 JK	129	PRINT_INFO(HOSTAPD_DBG, "Presentflags %d\n", hdr->hdr.it_present);
	130	hdr->rate = 5; /* txrate->bitrate / 5; */
	131
	132	}
	133
c5c77ba1 JK	134
	135
	136	skb->dev = wilc_wfi_mon;
	137	skb_set_mac_header(skb, 0);
	138	skb->ip_summed = CHECKSUM_UNNECESSARY;
	139	skb->pkt_type = PACKET_OTHERHOST;
	140	skb->protocol = htons(ETH_P_802_2);
	141	memset(skb->cb, 0, sizeof(skb->cb));
	142
	143	netif_rx(skb);
	144
	145
	146	}
	147
	148	struct tx_complete_mon_data {
	149	int size;
	150	void *buff;
	151	};
	152
	153	static void mgmt_tx_complete(void *priv, int status)
	154	{
	155
c5c77ba1	156	struct tx_complete_mon_data pv_data = (struct tx_complete_mon_data )priv;
63d03e47	157	u8 *buf = pv_data->buff;
c5c77ba1 JK	158
	159
	160
	161	if (status == 1) {
	162	if (INFO \|\| buf[0] == 0x10 \|\| buf[0] == 0xb0)
	163	PRINT_INFO(HOSTAPD_DBG, "Packet sent successfully - Size = %d - Address = %p.\n", pv_data->size, pv_data->buff);
	164	} else {
	165	PRINT_INFO(HOSTAPD_DBG, "Couldn't send packet - Size = %d - Address = %p.\n", pv_data->size, pv_data->buff);
	166	}
	167
	168
c5c77ba1 JK	169
c5c77ba1 JK	170	/* incase of fully hosting mode, the freeing will be done in response to the cfg packet */
c5c77ba1 JK	171	kfree(pv_data->buff);
	172
	173	kfree(pv_data);
c5c77ba1 JK	174	}
	175	static int mon_mgmt_tx(struct net_device dev, const u8 buf, size_t len)
	176	{
c5c77ba1 JK	177	struct tx_complete_mon_data *mgmt_tx = NULL;
	178
	179	if (dev == NULL) {
	180	PRINT_D(HOSTAPD_DBG, "ERROR: dev == NULL\n");
	181	return WILC_FAIL;
	182	}
c5c77ba1 JK	183
c5c77ba1 JK	184	netif_stop_queue(dev);
25fe2274	185	mgmt_tx = kmalloc(sizeof(struct tx_complete_mon_data), GFP_ATOMIC);
c5c77ba1 JK	186	if (mgmt_tx == NULL) {
	187	PRINT_ER("Failed to allocate memory for mgmt_tx structure\n");
	188	return WILC_FAIL;
	189	}
	190
30ef5c8b	191	mgmt_tx->buff = kmalloc(len, GFP_ATOMIC);
c5c77ba1 JK	192	if (mgmt_tx->buff == NULL) {
c5c77ba1 JK	193	PRINT_ER("Failed to allocate memory for mgmt_tx buff\n");
f638dd39	194	kfree(mgmt_tx);
c5c77ba1 JK	195	return WILC_FAIL;
	196
	197	}
	198
	199	mgmt_tx->size = len;
	200
c5c77ba1	201	memcpy(mgmt_tx->buff, buf, len);
c5c77ba1 JK	202	g_linux_wlan->oup.wlan_add_mgmt_to_tx_que(mgmt_tx, mgmt_tx->buff, mgmt_tx->size, mgmt_tx_complete);
	203
	204	netif_wake_queue(dev);
	205	return 0;
	206	}
	207
	208	/**
	209	* @brief WILC_WFI_mon_xmit
	210	* @details
	211	* @param[in]
	212	* @return int : Return 0 on Success
	213	* @author mdaftedar
	214	* @date 12 JUL 2012
	215	* @version 1.0
	216	*/
	217	static netdev_tx_t WILC_WFI_mon_xmit(struct sk_buff *skb,
	218	struct net_device *dev)
	219	{
4e4467fd	220	u32 rtap_len, i, ret = 0;
c5c77ba1 JK	221	struct WILC_WFI_mon_priv *mon_priv;
	222
	223	struct sk_buff *skb2;
	224	struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
	225
	226	/* Bug 4601 */
	227	if (wilc_wfi_mon == NULL)
	228	return WILC_FAIL;
	229
c5c77ba1 JK	230	mon_priv = netdev_priv(wilc_wfi_mon);
	231
	232	if (mon_priv == NULL) {
	233	PRINT_ER("Monitor interface private structure is NULL\n");
	234	return WILC_FAIL;
	235	}
	236
c5c77ba1 JK	237
	238	rtap_len = ieee80211_get_radiotap_len(skb->data);
	239	if (skb->len < rtap_len) {
	240	PRINT_ER("Error in radiotap header\n");
	241	return -1;
	242	}
	243	/* skip the radiotap header */
	244	PRINT_INFO(HOSTAPD_DBG, "Radiotap len: %d\n", rtap_len);
	245
	246	if (INFO) {
	247	for (i = 0; i < rtap_len; i++)
	248	PRINT_INFO(HOSTAPD_DBG, "Radiotap_hdr[%d] %02x\n", i, skb->data[i]);
	249	}
	250	/* Skip the ratio tap header */
	251	skb_pull(skb, rtap_len);
	252
	253	if (skb->data[0] == 0xc0)
	254	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]);
	255
	256	if (skb->data[0] == 0xc0 && (!(memcmp(broadcast, &skb->data[4], 6)))) {
	257	skb2 = dev_alloc_skb(skb->len + sizeof(struct wilc_wfi_radiotap_cb_hdr));
	258
	259	memcpy(skb_put(skb2, skb->len), skb->data, skb->len);
	260
	261	cb_hdr = (struct wilc_wfi_radiotap_cb_hdr ) skb_push(skb2, sizeof(cb_hdr));
	262	memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
	263
	264	cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
	265
	266	cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));
	267
	268	cb_hdr->hdr.it_present = cpu_to_le32(
	269	(1 << IEEE80211_RADIOTAP_RATE) \|
	270	(1 << IEEE80211_RADIOTAP_TX_FLAGS));
	271
	272	cb_hdr->rate = 5; /* txrate->bitrate / 5; */
	273	cb_hdr->tx_flags = 0x0004;
	274
	275	skb2->dev = wilc_wfi_mon;
	276	skb_set_mac_header(skb2, 0);
	277	skb2->ip_summed = CHECKSUM_UNNECESSARY;
	278	skb2->pkt_type = PACKET_OTHERHOST;
	279	skb2->protocol = htons(ETH_P_802_2);
	280	memset(skb2->cb, 0, sizeof(skb2->cb));
	281
	282	netif_rx(skb2);
	283
	284	return 0;
	285	}
	286	skb->dev = mon_priv->real_ndev;
	287
	288	PRINT_INFO(HOSTAPD_DBG, "Skipping the radiotap header\n");
	289
	290
	291
	292	/* actual deliver of data is device-specific, and not shown here */
	293	PRINT_INFO(HOSTAPD_DBG, "SKB netdevice name = %s\n", skb->dev->name);
	294	PRINT_INFO(HOSTAPD_DBG, "MONITOR real dev name = %s\n", mon_priv->real_ndev->name);
	295
c5c77ba1 JK	296	/* Identify if Ethernet or MAC header (data or mgmt) */
	297	memcpy(srcAdd, &skb->data[10], 6);
	298	memcpy(bssid, &skb->data[16], 6);
	299	/* if source address and bssid fields are equal>>Mac header */
	300	/send it to mgmt frames handler /
	301	if (!(memcmp(srcAdd, bssid, 6))) {
	302	mon_mgmt_tx(mon_priv->real_ndev, skb->data, skb->len);
	303	dev_kfree_skb(skb);
	304	} else
	305	ret = mac_xmit(skb, mon_priv->real_ndev);
c5c77ba1	306
c5c77ba1 JK	307	return ret;
	308	}
	309
	310	static const struct net_device_ops wilc_wfi_netdev_ops = {
	311	.ndo_start_xmit = WILC_WFI_mon_xmit,
	312
	313	};
	314
c5c77ba1 JK	315	/**
	316	* @brief WILC_WFI_mon_setup
	317	* @details
	318	* @param[in]
	319	* @return int : Return 0 on Success
	320	* @author mdaftedar
	321	* @date 12 JUL 2012
	322	* @version 1.0
	323	*/
	324	static void WILC_WFI_mon_setup(struct net_device *dev)
	325	{
	326
	327	dev->netdev_ops = &wilc_wfi_netdev_ops;
c5c77ba1 JK	328	PRINT_INFO(CORECONFIG_DBG, "In Ethernet setup function\n");
c5c77ba1 JK	329	ether_setup(dev);
7d9e437d	330	dev->priv_flags \|= IFF_NO_QUEUE;
c5c77ba1	331	dev->type = ARPHRD_IEEE80211_RADIOTAP;
8ca1b55a	332	eth_zero_addr(dev->dev_addr);
c5c77ba1	333
c5c77ba1	334	{
c5c77ba1	335	unsigned char mac_add[] = {0x00, 0x50, 0xc2, 0x5e, 0x10, 0x8f};
c5c77ba1 JK	336	memcpy(dev->dev_addr, mac_add, ETH_ALEN);
c5c77ba1 JK	337	}
c5c77ba1 JK	338
	339	}
	340
	341	/**
	342	* @brief WILC_WFI_init_mon_interface
	343	* @details
	344	* @param[in]
	345	* @return int : Return 0 on Success
	346	* @author mdaftedar
	347	* @date 12 JUL 2012
	348	* @version 1.0
	349	*/
057d1e97	350	struct net_device WILC_WFI_init_mon_interface(const char name, struct net_device *real_dev)
c5c77ba1 JK	351	{
	352
	353
4e4467fd	354	u32 ret = WILC_SUCCESS;
c5c77ba1 JK	355	struct WILC_WFI_mon_priv *priv;
	356
	357	/If monitor interface is already initialized, return it/
	358	if (wilc_wfi_mon) {
	359	return wilc_wfi_mon;
	360	}
c5c77ba1 JK	361
	362	wilc_wfi_mon = alloc_etherdev(sizeof(struct WILC_WFI_mon_priv));
	363	if (!wilc_wfi_mon) {
	364	PRINT_ER("failed to allocate memory\n");
	365	return NULL;
	366
	367	}
	368
	369	wilc_wfi_mon->type = ARPHRD_IEEE80211_RADIOTAP;
	370	strncpy(wilc_wfi_mon->name, name, IFNAMSIZ);
	371	wilc_wfi_mon->name[IFNAMSIZ - 1] = 0;
	372	wilc_wfi_mon->netdev_ops = &wilc_wfi_netdev_ops;
	373
	374	ret = register_netdevice(wilc_wfi_mon);
	375	if (ret) {
	376	PRINT_ER(" register_netdevice failed (%d)\n", ret);
	377	return NULL;
	378	}
	379	priv = netdev_priv(wilc_wfi_mon);
	380	if (priv == NULL) {
	381	PRINT_ER("private structure is NULL\n");
	382	return NULL;
	383	}
	384
	385	priv->real_ndev = real_dev;
	386
	387	return wilc_wfi_mon;
	388	}
	389
	390	/**
	391	* @brief WILC_WFI_deinit_mon_interface
	392	* @details
	393	* @param[in]
	394	* @return int : Return 0 on Success
	395	* @author mdaftedar
	396	* @date 12 JUL 2012
	397	* @version 1.0
	398	*/
a96c47e1	399	int WILC_WFI_deinit_mon_interface(void)
c5c77ba1 JK	400	{
	401	bool rollback_lock = false;
	402
	403	if (wilc_wfi_mon != NULL) {
	404	PRINT_D(HOSTAPD_DBG, "In Deinit monitor interface\n");
	405	PRINT_D(HOSTAPD_DBG, "RTNL is being locked\n");
	406	if (rtnl_is_locked()) {
	407	rtnl_unlock();
	408	rollback_lock = true;
	409	}
	410	PRINT_D(HOSTAPD_DBG, "Unregister netdev\n");
	411	unregister_netdev(wilc_wfi_mon);
c5c77ba1 JK	412
	413	if (rollback_lock) {
	414	rtnl_lock();
	415	rollback_lock = false;
	416	}
	417	wilc_wfi_mon = NULL;
	418	}
	419	return WILC_SUCCESS;
	420
	421	}
	422	#endif /* WILC_AP_EXTERNAL_MLME */