[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;
	/* u32 channel; */
} __attribute__((packed));

struct wilc_wfi_radiotap_cb_hdr {
	struct ieee80211_radiotap_header hdr;
	u8 rate;
	u8 dump;
	u16 tx_flags;
	/* u32 channel; */
} __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, uint32_t size)
{
	uint32_t 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");

	/*   struct wilc_priv *priv = netdev_priv(dev); */

	/*   priv = wiphy_priv(priv->dev->ieee80211_ptr->wiphy); */

	/* 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;
		}

		/* skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC); */
		/* if (skb == NULL) */
		/*      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_pad = 0; */
		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);                   /* | */
		/* (1 << IEEE80211_RADIOTAP_CHANNEL)); */
		PRINT_INFO(HOSTAPD_DBG, "Presentflags %d\n", hdr->hdr.it_present);
		hdr->rate = 5; /* txrate->bitrate / 5; */

	}

/*	if(INFO || if(skb->data[9] == 0x00 || skb->data[9] == 0xb0))
 *      {
 *              for(i=0;i<skb->len;i++)
 *                      PRINT_INFO(HOSTAPD_DBG,"Mon RxData[%d] = %02x\n",i,skb->data[i]);
 *      }*/


	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 sk_buff *skb2; */
	/* struct wilc_wfi_radiotap_cb_hdr *cb_hdr; */

	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);
	}


/*			//(skb->data[9] == 0x00 || skb->data[9] == 0xb0 || skb->data[9] == 0x40 ||  skb->data[9] == 0xd0 )
 *      {
 *              skb2 = dev_alloc_skb(pv_data->size+sizeof(struct wilc_wfi_radiotap_cb_hdr));
 *
 *              memcpy(skb_put(skb2,pv_data->size),pv_data->buff, pv_data->size);
 *
 *              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);
 *      }*/

	/* 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;

	/* if(skb->data[3] == 0x10 || skb->data[3] == 0xb0) */

	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 NETDEV_TX_OK; */
	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;
	/* dev->destructor = free_netdev; */
	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);

	{
		/* u8 * mac_add; */
		unsigned char mac_add[] = {0x00, 0x50, 0xc2, 0x5e, 0x10, 0x8f};
		/* priv = wiphy_priv(priv->dev->ieee80211_ptr->wiphy); */
		/* mac_add = (u8*)WILC_MALLOC(ETH_ALEN); */
		/* status = host_int_get_MacAddress(priv->hWILCWFIDrv,mac_add); */
		/* mac_add[ETH_ALEN-1]+=1; */
		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);
		/* free_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;
	19	/* u32 channel; */
	20	} __attribute__((packed));
	21
	22	struct wilc_wfi_radiotap_cb_hdr {
	23	struct ieee80211_radiotap_header hdr;
	24	u8 rate;
	25	u8 dump;
	26	u16 tx_flags;
	27	/* u32 channel; */
	28	} __attribute__((packed));
	29
	30	extern linux_wlan_t *g_linux_wlan;
	31
	32	static struct net_device wilc_wfi_mon; / global monitor netdev */
	33
c5c77ba1	34	extern int mac_xmit(struct sk_buff skb, struct net_device dev);
c5c77ba1 JK	35
c5c77ba1 JK	36
63d03e47 GKH	37	u8 srcAdd[6];
	38	u8 bssid[6];
	39	u8 broadcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
c5c77ba1 JK	40	/**
	41	* @brief WILC_WFI_monitor_rx
	42	* @details
	43	* @param[in]
	44	* @return int : Return 0 on Success
	45	* @author mdaftedar
	46	* @date 12 JUL 2012
	47	* @version 1.0
	48	*/
	49
	50	#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */
	51	#define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001 /* failed due to excessive*/
	52	#define IS_MANAGMEMENT 0x100
	53	#define IS_MANAGMEMENT_CALLBACK 0x080
	54	#define IS_MGMT_STATUS_SUCCES 0x040
	55	#define GET_PKT_OFFSET(a) (((a) >> 22) & 0x1ff)
	56
51e825f7	57	void WILC_WFI_monitor_rx(u8 *buff, uint32_t size)
c5c77ba1 JK	58	{
	59	uint32_t header, pkt_offset;
	60	struct sk_buff *skb = NULL;
	61	struct wilc_wfi_radiotap_hdr *hdr;
	62	struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
	63
	64	PRINT_INFO(HOSTAPD_DBG, "In monitor interface receive function\n");
	65
2726887c	66	/* struct wilc_priv priv = netdev_priv(dev); /
c5c77ba1 JK	67
	68	/* priv = wiphy_priv(priv->dev->ieee80211_ptr->wiphy); */
	69
	70	/* Bug 4601 */
	71	if (wilc_wfi_mon == NULL)
	72	return;
	73
	74	if (!netif_running(wilc_wfi_mon)) {
	75	PRINT_INFO(HOSTAPD_DBG, "Monitor interface already RUNNING\n");
	76	return;
	77	}
	78
	79	/* Get WILC header */
	80	memcpy(&header, (buff - HOST_HDR_OFFSET), HOST_HDR_OFFSET);
	81
	82	/* The packet offset field conain info about what type of managment frame */
	83	/* we are dealing with and ack status */
	84	pkt_offset = GET_PKT_OFFSET(header);
	85
	86	if (pkt_offset & IS_MANAGMEMENT_CALLBACK) {
	87
	88	/* hostapd callback mgmt frame */
	89
	90	skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_cb_hdr));
	91	if (skb == NULL) {
	92	PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
	93	return;
	94	}
	95
	96	memcpy(skb_put(skb, size), buff, size);
	97
	98	cb_hdr = (struct wilc_wfi_radiotap_cb_hdr ) skb_push(skb, sizeof(cb_hdr));
	99	memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
	100
	101	cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
	102
	103	cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));
	104
	105	cb_hdr->hdr.it_present = cpu_to_le32(
	106	(1 << IEEE80211_RADIOTAP_RATE) \|
	107	(1 << IEEE80211_RADIOTAP_TX_FLAGS));
	108
	109	cb_hdr->rate = 5; /* txrate->bitrate / 5; */
	110
	111	if (pkt_offset & IS_MGMT_STATUS_SUCCES) {
	112	/* success */
	113	cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_RTS;
	114	} else {
	115	cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_FAIL;
	116	}
	117
	118	} else {
	119
	120	skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_hdr));
	121
	122	if (skb == NULL) {
	123	PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
	124	return;
	125	}
	126
	127	/* skb = skb_copy_expand(tx_skb, sizeof(hdr), 0, GFP_ATOMIC); /
	128	/* if (skb == NULL) */
	129	/* return; */
	130
131	memcpy(skb_put(skb, size), buff, size);
132	hdr = (struct wilc_wfi_radiotap_hdr ) skb_push(skb, sizeof(hdr));
133	memset(hdr, 0, sizeof(struct wilc_wfi_radiotap_hdr));
134	hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
135	/* hdr->hdr.it_pad = 0; */
136	hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_hdr));
137	PRINT_INFO(HOSTAPD_DBG, "Radiotap len %d\n", hdr->hdr.it_len);
138	hdr->hdr.it_present = cpu_to_le32
139	(1 << IEEE80211_RADIOTAP_RATE); /* \| */
140	/* (1 << IEEE80211_RADIOTAP_CHANNEL)); */
141	PRINT_INFO(HOSTAPD_DBG, "Presentflags %d\n", hdr->hdr.it_present);
142	hdr->rate = 5; /* txrate->bitrate / 5; */
143
144	}
145
146	/* if(INFO \|\| if(skb->data[9] == 0x00 \|\| skb->data[9] == 0xb0))
147	* {
148	* for(i=0;i<skb->len;i++)
149	* PRINT_INFO(HOSTAPD_DBG,"Mon RxData[%d] = %02x\n",i,skb->data[i]);
150	* }*/
151
152
153	skb->dev = wilc_wfi_mon;
154	skb_set_mac_header(skb, 0);
155	skb->ip_summed = CHECKSUM_UNNECESSARY;
156	skb->pkt_type = PACKET_OTHERHOST;
157	skb->protocol = htons(ETH_P_802_2);
158	memset(skb->cb, 0, sizeof(skb->cb));
159
160	netif_rx(skb);
161
162
163	}
164
165	struct tx_complete_mon_data {
166	int size;
167	void *buff;
168	};
169
170	static void mgmt_tx_complete(void *priv, int status)
171	{
172
173	/* struct sk_buff skb2; /
174	/* struct wilc_wfi_radiotap_cb_hdr cb_hdr; /
175
176	struct tx_complete_mon_data pv_data = (struct tx_complete_mon_data )priv;
63d03e47	177	u8 *buf = pv_data->buff;
c5c77ba1 JK	178
	179
	180
	181	if (status == 1) {
	182	if (INFO \|\| buf[0] == 0x10 \|\| buf[0] == 0xb0)
	183	PRINT_INFO(HOSTAPD_DBG, "Packet sent successfully - Size = %d - Address = %p.\n", pv_data->size, pv_data->buff);
	184	} else {
	185	PRINT_INFO(HOSTAPD_DBG, "Couldn't send packet - Size = %d - Address = %p.\n", pv_data->size, pv_data->buff);
	186	}
	187
	188
	189	/* //(skb->data[9] == 0x00 \|\| skb->data[9] == 0xb0 \|\| skb->data[9] == 0x40 \|\| skb->data[9] == 0xd0 )
	190	* {
	191	* skb2 = dev_alloc_skb(pv_data->size+sizeof(struct wilc_wfi_radiotap_cb_hdr));
	192	*
	193	* memcpy(skb_put(skb2,pv_data->size),pv_data->buff, pv_data->size);
	194	*
	195	* cb_hdr = (struct wilc_wfi_radiotap_cb_hdr ) skb_push(skb2, sizeof(cb_hdr));
	196	* memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
	197	*
	198	* cb_hdr->hdr.it_version = 0;//PKTHDR_RADIOTAP_VERSION;
	199	*
	200	* cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));
	201	*
	202	* cb_hdr->hdr.it_present = cpu_to_le32(
	203	* (1 << IEEE80211_RADIOTAP_RATE) \|
	204	* (1 << IEEE80211_RADIOTAP_TX_FLAGS));
	205	*
	206	* cb_hdr->rate = 5;//txrate->bitrate / 5;
	207	* cb_hdr->tx_flags = 0x0004;
	208	*
	209	* skb2->dev = wilc_wfi_mon;
	210	* skb_set_mac_header(skb2, 0);
	211	* skb2->ip_summed = CHECKSUM_UNNECESSARY;
	212	* skb2->pkt_type = PACKET_OTHERHOST;
	213	* skb2->protocol = htons(ETH_P_802_2);
	214	* memset(skb2->cb, 0, sizeof(skb2->cb));
	215	*
	216	* netif_rx(skb2);
	217	* }*/
	218
	219	/* incase of fully hosting mode, the freeing will be done in response to the cfg packet */
c5c77ba1 JK	220	kfree(pv_data->buff);
	221
	222	kfree(pv_data);
c5c77ba1 JK	223	}
	224	static int mon_mgmt_tx(struct net_device dev, const u8 buf, size_t len)
	225	{
c5c77ba1 JK	226	struct tx_complete_mon_data *mgmt_tx = NULL;
	227
	228	if (dev == NULL) {
	229	PRINT_D(HOSTAPD_DBG, "ERROR: dev == NULL\n");
	230	return WILC_FAIL;
	231	}
c5c77ba1 JK	232
c5c77ba1 JK	233	netif_stop_queue(dev);
25fe2274	234	mgmt_tx = kmalloc(sizeof(struct tx_complete_mon_data), GFP_ATOMIC);
c5c77ba1 JK	235	if (mgmt_tx == NULL) {
	236	PRINT_ER("Failed to allocate memory for mgmt_tx structure\n");
	237	return WILC_FAIL;
	238	}
	239
30ef5c8b	240	mgmt_tx->buff = kmalloc(len, GFP_ATOMIC);
c5c77ba1 JK	241	if (mgmt_tx->buff == NULL) {
c5c77ba1 JK	242	PRINT_ER("Failed to allocate memory for mgmt_tx buff\n");
f638dd39	243	kfree(mgmt_tx);
c5c77ba1 JK	244	return WILC_FAIL;
	245
	246	}
	247
	248	mgmt_tx->size = len;
	249
c5c77ba1	250	memcpy(mgmt_tx->buff, buf, len);
c5c77ba1 JK	251	g_linux_wlan->oup.wlan_add_mgmt_to_tx_que(mgmt_tx, mgmt_tx->buff, mgmt_tx->size, mgmt_tx_complete);
	252
	253	netif_wake_queue(dev);
	254	return 0;
	255	}
	256
	257	/**
	258	* @brief WILC_WFI_mon_xmit
	259	* @details
	260	* @param[in]
	261	* @return int : Return 0 on Success
	262	* @author mdaftedar
	263	* @date 12 JUL 2012
	264	* @version 1.0
	265	*/
	266	static netdev_tx_t WILC_WFI_mon_xmit(struct sk_buff *skb,
	267	struct net_device *dev)
	268	{
4e4467fd	269	u32 rtap_len, i, ret = 0;
c5c77ba1 JK	270	struct WILC_WFI_mon_priv *mon_priv;
	271
	272	struct sk_buff *skb2;
	273	struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
	274
	275	/* Bug 4601 */
	276	if (wilc_wfi_mon == NULL)
	277	return WILC_FAIL;
	278
	279	/* if(skb->data[3] == 0x10 \|\| skb->data[3] == 0xb0) */
	280
	281	mon_priv = netdev_priv(wilc_wfi_mon);
	282
	283	if (mon_priv == NULL) {
	284	PRINT_ER("Monitor interface private structure is NULL\n");
	285	return WILC_FAIL;
	286	}
	287
c5c77ba1 JK	288
	289	rtap_len = ieee80211_get_radiotap_len(skb->data);
	290	if (skb->len < rtap_len) {
	291	PRINT_ER("Error in radiotap header\n");
	292	return -1;
	293	}
	294	/* skip the radiotap header */
	295	PRINT_INFO(HOSTAPD_DBG, "Radiotap len: %d\n", rtap_len);
	296
	297	if (INFO) {
	298	for (i = 0; i < rtap_len; i++)
	299	PRINT_INFO(HOSTAPD_DBG, "Radiotap_hdr[%d] %02x\n", i, skb->data[i]);
	300	}
	301	/* Skip the ratio tap header */
	302	skb_pull(skb, rtap_len);
	303
	304	if (skb->data[0] == 0xc0)
	305	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]);
	306
	307	if (skb->data[0] == 0xc0 && (!(memcmp(broadcast, &skb->data[4], 6)))) {
	308	skb2 = dev_alloc_skb(skb->len + sizeof(struct wilc_wfi_radiotap_cb_hdr));
	309
	310	memcpy(skb_put(skb2, skb->len), skb->data, skb->len);
	311
	312	cb_hdr = (struct wilc_wfi_radiotap_cb_hdr ) skb_push(skb2, sizeof(cb_hdr));
	313	memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
	314
	315	cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
	316
	317	cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));
	318
	319	cb_hdr->hdr.it_present = cpu_to_le32(
	320	(1 << IEEE80211_RADIOTAP_RATE) \|
	321	(1 << IEEE80211_RADIOTAP_TX_FLAGS));
	322
	323	cb_hdr->rate = 5; /* txrate->bitrate / 5; */
	324	cb_hdr->tx_flags = 0x0004;
	325
	326	skb2->dev = wilc_wfi_mon;
	327	skb_set_mac_header(skb2, 0);
	328	skb2->ip_summed = CHECKSUM_UNNECESSARY;
	329	skb2->pkt_type = PACKET_OTHERHOST;
	330	skb2->protocol = htons(ETH_P_802_2);
	331	memset(skb2->cb, 0, sizeof(skb2->cb));
	332
	333	netif_rx(skb2);
	334
	335	return 0;
	336	}
	337	skb->dev = mon_priv->real_ndev;
	338
	339	PRINT_INFO(HOSTAPD_DBG, "Skipping the radiotap header\n");
	340
	341
	342
	343	/* actual deliver of data is device-specific, and not shown here */
	344	PRINT_INFO(HOSTAPD_DBG, "SKB netdevice name = %s\n", skb->dev->name);
	345	PRINT_INFO(HOSTAPD_DBG, "MONITOR real dev name = %s\n", mon_priv->real_ndev->name);
	346
c5c77ba1 JK	347	/* Identify if Ethernet or MAC header (data or mgmt) */
	348	memcpy(srcAdd, &skb->data[10], 6);
	349	memcpy(bssid, &skb->data[16], 6);
	350	/* if source address and bssid fields are equal>>Mac header */
	351	/send it to mgmt frames handler /
	352	if (!(memcmp(srcAdd, bssid, 6))) {
	353	mon_mgmt_tx(mon_priv->real_ndev, skb->data, skb->len);
	354	dev_kfree_skb(skb);
	355	} else
	356	ret = mac_xmit(skb, mon_priv->real_ndev);
c5c77ba1 JK	357
	358	/* return NETDEV_TX_OK; */
	359	return ret;
	360	}
	361
	362	static const struct net_device_ops wilc_wfi_netdev_ops = {
	363	.ndo_start_xmit = WILC_WFI_mon_xmit,
	364
	365	};
	366
c5c77ba1 JK	367	/**
	368	* @brief WILC_WFI_mon_setup
	369	* @details
	370	* @param[in]
	371	* @return int : Return 0 on Success
	372	* @author mdaftedar
	373	* @date 12 JUL 2012
	374	* @version 1.0
	375	*/
	376	static void WILC_WFI_mon_setup(struct net_device *dev)
	377	{
	378
	379	dev->netdev_ops = &wilc_wfi_netdev_ops;
	380	/* dev->destructor = free_netdev; */
	381	PRINT_INFO(CORECONFIG_DBG, "In Ethernet setup function\n");
	382	ether_setup(dev);
7d9e437d	383	dev->priv_flags \|= IFF_NO_QUEUE;
c5c77ba1	384	dev->type = ARPHRD_IEEE80211_RADIOTAP;
8ca1b55a	385	eth_zero_addr(dev->dev_addr);
c5c77ba1	386
c5c77ba1 JK	387	{
	388	/* u8 * mac_add; */
	389	unsigned char mac_add[] = {0x00, 0x50, 0xc2, 0x5e, 0x10, 0x8f};
	390	/* priv = wiphy_priv(priv->dev->ieee80211_ptr->wiphy); */
63d03e47	391	/* mac_add = (u8)WILC_MALLOC(ETH_ALEN); /
c5c77ba1 JK	392	/* status = host_int_get_MacAddress(priv->hWILCWFIDrv,mac_add); */
	393	/* mac_add[ETH_ALEN-1]+=1; */
	394	memcpy(dev->dev_addr, mac_add, ETH_ALEN);
	395	}
c5c77ba1 JK	396
	397	}
	398
	399	/**
	400	* @brief WILC_WFI_init_mon_interface
	401	* @details
	402	* @param[in]
	403	* @return int : Return 0 on Success
	404	* @author mdaftedar
	405	* @date 12 JUL 2012
	406	* @version 1.0
	407	*/
057d1e97	408	struct net_device WILC_WFI_init_mon_interface(const char name, struct net_device *real_dev)
c5c77ba1 JK	409	{
	410
	411
4e4467fd	412	u32 ret = WILC_SUCCESS;
c5c77ba1 JK	413	struct WILC_WFI_mon_priv *priv;
	414
	415	/If monitor interface is already initialized, return it/
	416	if (wilc_wfi_mon) {
	417	return wilc_wfi_mon;
	418	}
c5c77ba1 JK	419
	420	wilc_wfi_mon = alloc_etherdev(sizeof(struct WILC_WFI_mon_priv));
	421	if (!wilc_wfi_mon) {
	422	PRINT_ER("failed to allocate memory\n");
	423	return NULL;
	424
	425	}
	426
	427	wilc_wfi_mon->type = ARPHRD_IEEE80211_RADIOTAP;
	428	strncpy(wilc_wfi_mon->name, name, IFNAMSIZ);
	429	wilc_wfi_mon->name[IFNAMSIZ - 1] = 0;
	430	wilc_wfi_mon->netdev_ops = &wilc_wfi_netdev_ops;
	431
	432	ret = register_netdevice(wilc_wfi_mon);
	433	if (ret) {
	434	PRINT_ER(" register_netdevice failed (%d)\n", ret);
	435	return NULL;
	436	}
	437	priv = netdev_priv(wilc_wfi_mon);
	438	if (priv == NULL) {
	439	PRINT_ER("private structure is NULL\n");
	440	return NULL;
	441	}
	442
	443	priv->real_ndev = real_dev;
	444
	445	return wilc_wfi_mon;
	446	}
	447
	448	/**
	449	* @brief WILC_WFI_deinit_mon_interface
	450	* @details
	451	* @param[in]
	452	* @return int : Return 0 on Success
	453	* @author mdaftedar
	454	* @date 12 JUL 2012
	455	* @version 1.0
	456	*/
a96c47e1	457	int WILC_WFI_deinit_mon_interface(void)
c5c77ba1 JK	458	{
	459	bool rollback_lock = false;
	460
	461	if (wilc_wfi_mon != NULL) {
	462	PRINT_D(HOSTAPD_DBG, "In Deinit monitor interface\n");
	463	PRINT_D(HOSTAPD_DBG, "RTNL is being locked\n");
	464	if (rtnl_is_locked()) {
	465	rtnl_unlock();
	466	rollback_lock = true;
	467	}
	468	PRINT_D(HOSTAPD_DBG, "Unregister netdev\n");
	469	unregister_netdev(wilc_wfi_mon);
	470	/* free_netdev(wilc_wfi_mon); */
	471
	472	if (rollback_lock) {
	473	rtnl_lock();
	474	rollback_lock = false;
	475	}
	476	wilc_wfi_mon = NULL;
	477	}
	478	return WILC_SUCCESS;
	479
	480	}
	481	#endif /* WILC_AP_EXTERNAL_MLME */