[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 */

#if USE_WIRELESS
extern int  mac_xmit(struct sk_buff *skb, struct net_device *dev);
#endif


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(uint8_t *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_WFI_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");
		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);

	#if USE_WIRELESS
	/* 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);
	#endif

	/* 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);

	#ifdef USE_WIRELESS
	{
		/* 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);
	}
	#else
	dev->dev_addr[0] = 0x12;
	#endif

}

/**
 *  @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
9690df3f	34	#if USE_WIRELESS
c5c77ba1 JK	35	extern int mac_xmit(struct sk_buff skb, struct net_device dev);
	36	#endif
	37
	38
63d03e47 GKH	39	u8 srcAdd[6];
	40	u8 bssid[6];
	41	u8 broadcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
c5c77ba1 JK	42	/**
	43	* @brief WILC_WFI_monitor_rx
	44	* @details
	45	* @param[in]
	46	* @return int : Return 0 on Success
	47	* @author mdaftedar
	48	* @date 12 JUL 2012
	49	* @version 1.0
	50	*/
	51
	52	#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */
	53	#define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001 /* failed due to excessive*/
	54	#define IS_MANAGMEMENT 0x100
	55	#define IS_MANAGMEMENT_CALLBACK 0x080
	56	#define IS_MGMT_STATUS_SUCCES 0x040
	57	#define GET_PKT_OFFSET(a) (((a) >> 22) & 0x1ff)
	58
	59	void WILC_WFI_monitor_rx(uint8_t *buff, uint32_t size)
	60	{
	61	uint32_t header, pkt_offset;
	62	struct sk_buff *skb = NULL;
	63	struct wilc_wfi_radiotap_hdr *hdr;
	64	struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
	65
	66	PRINT_INFO(HOSTAPD_DBG, "In monitor interface receive function\n");
	67
	68	/* struct WILC_WFI_priv priv = netdev_priv(dev); /
	69
	70	/* priv = wiphy_priv(priv->dev->ieee80211_ptr->wiphy); */
	71
	72	/* Bug 4601 */
	73	if (wilc_wfi_mon == NULL)
	74	return;
	75
	76	if (!netif_running(wilc_wfi_mon)) {
	77	PRINT_INFO(HOSTAPD_DBG, "Monitor interface already RUNNING\n");
	78	return;
	79	}
	80
	81	/* Get WILC header */
	82	memcpy(&header, (buff - HOST_HDR_OFFSET), HOST_HDR_OFFSET);
	83
	84	/* The packet offset field conain info about what type of managment frame */
	85	/* we are dealing with and ack status */
	86	pkt_offset = GET_PKT_OFFSET(header);
	87
	88	if (pkt_offset & IS_MANAGMEMENT_CALLBACK) {
	89
	90	/* hostapd callback mgmt frame */
	91
	92	skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_cb_hdr));
	93	if (skb == NULL) {
	94	PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
	95	return;
	96	}
	97
	98	memcpy(skb_put(skb, size), buff, size);
	99
	100	cb_hdr = (struct wilc_wfi_radiotap_cb_hdr ) skb_push(skb, sizeof(cb_hdr));
	101	memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
	102
	103	cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
	104
	105	cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));
106
107	cb_hdr->hdr.it_present = cpu_to_le32(
108	(1 << IEEE80211_RADIOTAP_RATE) \|
109	(1 << IEEE80211_RADIOTAP_TX_FLAGS));
110
111	cb_hdr->rate = 5; /* txrate->bitrate / 5; */
112
113	if (pkt_offset & IS_MGMT_STATUS_SUCCES) {
114	/* success */
115	cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_RTS;
116	} else {
117	cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_FAIL;
118	}
119
120	} else {
121
122	skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_hdr));
123
124	if (skb == NULL) {
125	PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
126	return;
127	}
128
129	/* skb = skb_copy_expand(tx_skb, sizeof(hdr), 0, GFP_ATOMIC); /
130	/* if (skb == NULL) */
131	/* return; */
132
133	memcpy(skb_put(skb, size), buff, size);
134	hdr = (struct wilc_wfi_radiotap_hdr ) skb_push(skb, sizeof(hdr));
135	memset(hdr, 0, sizeof(struct wilc_wfi_radiotap_hdr));
136	hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
137	/* hdr->hdr.it_pad = 0; */
138	hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_hdr));
139	PRINT_INFO(HOSTAPD_DBG, "Radiotap len %d\n", hdr->hdr.it_len);
140	hdr->hdr.it_present = cpu_to_le32
141	(1 << IEEE80211_RADIOTAP_RATE); /* \| */
142	/* (1 << IEEE80211_RADIOTAP_CHANNEL)); */
143	PRINT_INFO(HOSTAPD_DBG, "Presentflags %d\n", hdr->hdr.it_present);
144	hdr->rate = 5; /* txrate->bitrate / 5; */
145
146	}
147
148	/* if(INFO \|\| if(skb->data[9] == 0x00 \|\| skb->data[9] == 0xb0))
149	* {
150	* for(i=0;i<skb->len;i++)
151	* PRINT_INFO(HOSTAPD_DBG,"Mon RxData[%d] = %02x\n",i,skb->data[i]);
152	* }*/
153
154
155	skb->dev = wilc_wfi_mon;
156	skb_set_mac_header(skb, 0);
157	skb->ip_summed = CHECKSUM_UNNECESSARY;
158	skb->pkt_type = PACKET_OTHERHOST;
159	skb->protocol = htons(ETH_P_802_2);
160	memset(skb->cb, 0, sizeof(skb->cb));
161
162	netif_rx(skb);
163
164
165	}
166
167	struct tx_complete_mon_data {
168	int size;
169	void *buff;
170	};
171
172	static void mgmt_tx_complete(void *priv, int status)
173	{
174
175	/* struct sk_buff skb2; /
176	/* struct wilc_wfi_radiotap_cb_hdr cb_hdr; /
177
178	struct tx_complete_mon_data pv_data = (struct tx_complete_mon_data )priv;
63d03e47	179	u8 *buf = pv_data->buff;
c5c77ba1 JK	180
	181
	182
	183	if (status == 1) {
	184	if (INFO \|\| buf[0] == 0x10 \|\| buf[0] == 0xb0)
	185	PRINT_INFO(HOSTAPD_DBG, "Packet sent successfully - Size = %d - Address = %p.\n", pv_data->size, pv_data->buff);
	186	} else {
	187	PRINT_INFO(HOSTAPD_DBG, "Couldn't send packet - Size = %d - Address = %p.\n", pv_data->size, pv_data->buff);
	188	}
	189
	190
	191	/* //(skb->data[9] == 0x00 \|\| skb->data[9] == 0xb0 \|\| skb->data[9] == 0x40 \|\| skb->data[9] == 0xd0 )
	192	* {
	193	* skb2 = dev_alloc_skb(pv_data->size+sizeof(struct wilc_wfi_radiotap_cb_hdr));
	194	*
	195	* memcpy(skb_put(skb2,pv_data->size),pv_data->buff, pv_data->size);
	196	*
	197	* cb_hdr = (struct wilc_wfi_radiotap_cb_hdr ) skb_push(skb2, sizeof(cb_hdr));
	198	* memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
	199	*
	200	* cb_hdr->hdr.it_version = 0;//PKTHDR_RADIOTAP_VERSION;
	201	*
	202	* cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));
	203	*
	204	* cb_hdr->hdr.it_present = cpu_to_le32(
	205	* (1 << IEEE80211_RADIOTAP_RATE) \|
	206	* (1 << IEEE80211_RADIOTAP_TX_FLAGS));
	207	*
	208	* cb_hdr->rate = 5;//txrate->bitrate / 5;
	209	* cb_hdr->tx_flags = 0x0004;
	210	*
	211	* skb2->dev = wilc_wfi_mon;
	212	* skb_set_mac_header(skb2, 0);
	213	* skb2->ip_summed = CHECKSUM_UNNECESSARY;
	214	* skb2->pkt_type = PACKET_OTHERHOST;
	215	* skb2->protocol = htons(ETH_P_802_2);
	216	* memset(skb2->cb, 0, sizeof(skb2->cb));
	217	*
	218	* netif_rx(skb2);
	219	* }*/
	220
	221	/* incase of fully hosting mode, the freeing will be done in response to the cfg packet */
c5c77ba1 JK	222	kfree(pv_data->buff);
	223
	224	kfree(pv_data);
c5c77ba1 JK	225	}
	226	static int mon_mgmt_tx(struct net_device dev, const u8 buf, size_t len)
	227	{
c5c77ba1 JK	228	struct tx_complete_mon_data *mgmt_tx = NULL;
	229
	230	if (dev == NULL) {
	231	PRINT_D(HOSTAPD_DBG, "ERROR: dev == NULL\n");
	232	return WILC_FAIL;
	233	}
c5c77ba1 JK	234
c5c77ba1 JK	235	netif_stop_queue(dev);
25fe2274	236	mgmt_tx = kmalloc(sizeof(struct tx_complete_mon_data), GFP_ATOMIC);
c5c77ba1 JK	237	if (mgmt_tx == NULL) {
	238	PRINT_ER("Failed to allocate memory for mgmt_tx structure\n");
	239	return WILC_FAIL;
	240	}
	241
30ef5c8b	242	mgmt_tx->buff = kmalloc(len, GFP_ATOMIC);
c5c77ba1 JK	243	if (mgmt_tx->buff == NULL) {
	244	PRINT_ER("Failed to allocate memory for mgmt_tx buff\n");
	245	return WILC_FAIL;
	246
	247	}
	248
	249	mgmt_tx->size = len;
	250
c5c77ba1	251	memcpy(mgmt_tx->buff, buf, len);
c5c77ba1 JK	252	g_linux_wlan->oup.wlan_add_mgmt_to_tx_que(mgmt_tx, mgmt_tx->buff, mgmt_tx->size, mgmt_tx_complete);
	253
	254	netif_wake_queue(dev);
	255	return 0;
	256	}
	257
	258	/**
	259	* @brief WILC_WFI_mon_xmit
	260	* @details
	261	* @param[in]
	262	* @return int : Return 0 on Success
	263	* @author mdaftedar
	264	* @date 12 JUL 2012
	265	* @version 1.0
	266	*/
	267	static netdev_tx_t WILC_WFI_mon_xmit(struct sk_buff *skb,
	268	struct net_device *dev)
	269	{
4e4467fd	270	u32 rtap_len, i, ret = 0;
c5c77ba1 JK	271	struct WILC_WFI_mon_priv *mon_priv;
	272
	273	struct sk_buff *skb2;
	274	struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
	275
	276	/* Bug 4601 */
	277	if (wilc_wfi_mon == NULL)
	278	return WILC_FAIL;
	279
	280	/* if(skb->data[3] == 0x10 \|\| skb->data[3] == 0xb0) */
	281
	282	mon_priv = netdev_priv(wilc_wfi_mon);
	283
	284	if (mon_priv == NULL) {
	285	PRINT_ER("Monitor interface private structure is NULL\n");
	286	return WILC_FAIL;
	287	}
	288
c5c77ba1 JK	289
	290	rtap_len = ieee80211_get_radiotap_len(skb->data);
	291	if (skb->len < rtap_len) {
	292	PRINT_ER("Error in radiotap header\n");
	293	return -1;
	294	}
	295	/* skip the radiotap header */
	296	PRINT_INFO(HOSTAPD_DBG, "Radiotap len: %d\n", rtap_len);
	297
	298	if (INFO) {
	299	for (i = 0; i < rtap_len; i++)
	300	PRINT_INFO(HOSTAPD_DBG, "Radiotap_hdr[%d] %02x\n", i, skb->data[i]);
	301	}
	302	/* Skip the ratio tap header */
	303	skb_pull(skb, rtap_len);
	304
	305	if (skb->data[0] == 0xc0)
	306	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]);
	307
	308	if (skb->data[0] == 0xc0 && (!(memcmp(broadcast, &skb->data[4], 6)))) {
	309	skb2 = dev_alloc_skb(skb->len + sizeof(struct wilc_wfi_radiotap_cb_hdr));
	310
	311	memcpy(skb_put(skb2, skb->len), skb->data, skb->len);
	312
	313	cb_hdr = (struct wilc_wfi_radiotap_cb_hdr ) skb_push(skb2, sizeof(cb_hdr));
	314	memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
	315
	316	cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
	317
	318	cb_hdr->hdr.it_len = cpu_to_le16(sizeof(struct wilc_wfi_radiotap_cb_hdr));
	319
	320	cb_hdr->hdr.it_present = cpu_to_le32(
	321	(1 << IEEE80211_RADIOTAP_RATE) \|
	322	(1 << IEEE80211_RADIOTAP_TX_FLAGS));
	323
	324	cb_hdr->rate = 5; /* txrate->bitrate / 5; */
	325	cb_hdr->tx_flags = 0x0004;
	326
	327	skb2->dev = wilc_wfi_mon;
	328	skb_set_mac_header(skb2, 0);
	329	skb2->ip_summed = CHECKSUM_UNNECESSARY;
	330	skb2->pkt_type = PACKET_OTHERHOST;
	331	skb2->protocol = htons(ETH_P_802_2);
	332	memset(skb2->cb, 0, sizeof(skb2->cb));
	333
	334	netif_rx(skb2);
	335
	336	return 0;
	337	}
	338	skb->dev = mon_priv->real_ndev;
	339
	340	PRINT_INFO(HOSTAPD_DBG, "Skipping the radiotap header\n");
	341
	342
	343
	344	/* actual deliver of data is device-specific, and not shown here */
	345	PRINT_INFO(HOSTAPD_DBG, "SKB netdevice name = %s\n", skb->dev->name);
	346	PRINT_INFO(HOSTAPD_DBG, "MONITOR real dev name = %s\n", mon_priv->real_ndev->name);
	347
9690df3f	348	#if USE_WIRELESS
c5c77ba1 JK	349	/* Identify if Ethernet or MAC header (data or mgmt) */
	350	memcpy(srcAdd, &skb->data[10], 6);
	351	memcpy(bssid, &skb->data[16], 6);
	352	/* if source address and bssid fields are equal>>Mac header */
	353	/send it to mgmt frames handler /
	354	if (!(memcmp(srcAdd, bssid, 6))) {
	355	mon_mgmt_tx(mon_priv->real_ndev, skb->data, skb->len);
	356	dev_kfree_skb(skb);
	357	} else
	358	ret = mac_xmit(skb, mon_priv->real_ndev);
	359	#endif
	360
	361	/* return NETDEV_TX_OK; */
	362	return ret;
	363	}
	364
	365	static const struct net_device_ops wilc_wfi_netdev_ops = {
	366	.ndo_start_xmit = WILC_WFI_mon_xmit,
	367
	368	};
	369
c5c77ba1 JK	370	/**
	371	* @brief WILC_WFI_mon_setup
	372	* @details
	373	* @param[in]
	374	* @return int : Return 0 on Success
	375	* @author mdaftedar
	376	* @date 12 JUL 2012
	377	* @version 1.0
	378	*/
	379	static void WILC_WFI_mon_setup(struct net_device *dev)
	380	{
	381
	382	dev->netdev_ops = &wilc_wfi_netdev_ops;
	383	/* dev->destructor = free_netdev; */
	384	PRINT_INFO(CORECONFIG_DBG, "In Ethernet setup function\n");
	385	ether_setup(dev);
7d9e437d	386	dev->priv_flags \|= IFF_NO_QUEUE;
c5c77ba1	387	dev->type = ARPHRD_IEEE80211_RADIOTAP;
8ca1b55a	388	eth_zero_addr(dev->dev_addr);
c5c77ba1 JK	389
	390	#ifdef USE_WIRELESS
	391	{
	392	/* u8 * mac_add; */
	393	unsigned char mac_add[] = {0x00, 0x50, 0xc2, 0x5e, 0x10, 0x8f};
	394	/* priv = wiphy_priv(priv->dev->ieee80211_ptr->wiphy); */
63d03e47	395	/* mac_add = (u8)WILC_MALLOC(ETH_ALEN); /
c5c77ba1 JK	396	/* status = host_int_get_MacAddress(priv->hWILCWFIDrv,mac_add); */
	397	/* mac_add[ETH_ALEN-1]+=1; */
	398	memcpy(dev->dev_addr, mac_add, ETH_ALEN);
	399	}
	400	#else
	401	dev->dev_addr[0] = 0x12;
	402	#endif
	403
	404	}
	405
	406	/**
	407	* @brief WILC_WFI_init_mon_interface
	408	* @details
	409	* @param[in]
	410	* @return int : Return 0 on Success
	411	* @author mdaftedar
	412	* @date 12 JUL 2012
	413	* @version 1.0
	414	*/
057d1e97	415	struct net_device WILC_WFI_init_mon_interface(const char name, struct net_device *real_dev)
c5c77ba1 JK	416	{
	417
	418
4e4467fd	419	u32 ret = WILC_SUCCESS;
c5c77ba1 JK	420	struct WILC_WFI_mon_priv *priv;
	421
	422	/If monitor interface is already initialized, return it/
	423	if (wilc_wfi_mon) {
	424	return wilc_wfi_mon;
	425	}
c5c77ba1 JK	426
	427	wilc_wfi_mon = alloc_etherdev(sizeof(struct WILC_WFI_mon_priv));
	428	if (!wilc_wfi_mon) {
	429	PRINT_ER("failed to allocate memory\n");
	430	return NULL;
	431
	432	}
	433
	434	wilc_wfi_mon->type = ARPHRD_IEEE80211_RADIOTAP;
	435	strncpy(wilc_wfi_mon->name, name, IFNAMSIZ);
	436	wilc_wfi_mon->name[IFNAMSIZ - 1] = 0;
	437	wilc_wfi_mon->netdev_ops = &wilc_wfi_netdev_ops;
	438
	439	ret = register_netdevice(wilc_wfi_mon);
	440	if (ret) {
	441	PRINT_ER(" register_netdevice failed (%d)\n", ret);
	442	return NULL;
	443	}
	444	priv = netdev_priv(wilc_wfi_mon);
	445	if (priv == NULL) {
	446	PRINT_ER("private structure is NULL\n");
	447	return NULL;
	448	}
	449
	450	priv->real_ndev = real_dev;
	451
	452	return wilc_wfi_mon;
	453	}
	454
	455	/**
	456	* @brief WILC_WFI_deinit_mon_interface
	457	* @details
	458	* @param[in]
	459	* @return int : Return 0 on Success
	460	* @author mdaftedar
	461	* @date 12 JUL 2012
	462	* @version 1.0
	463	*/
a96c47e1	464	int WILC_WFI_deinit_mon_interface(void)
c5c77ba1 JK	465	{
	466	bool rollback_lock = false;
	467
	468	if (wilc_wfi_mon != NULL) {
	469	PRINT_D(HOSTAPD_DBG, "In Deinit monitor interface\n");
	470	PRINT_D(HOSTAPD_DBG, "RTNL is being locked\n");
	471	if (rtnl_is_locked()) {
	472	rtnl_unlock();
	473	rollback_lock = true;
	474	}
	475	PRINT_D(HOSTAPD_DBG, "Unregister netdev\n");
	476	unregister_netdev(wilc_wfi_mon);
	477	/* free_netdev(wilc_wfi_mon); */
	478
	479	if (rollback_lock) {
	480	rtnl_lock();
	481	rollback_lock = false;
	482	}
	483	wilc_wfi_mon = NULL;
	484	}
	485	return WILC_SUCCESS;
	486
	487	}
	488	#endif /* WILC_AP_EXTERNAL_MLME */