[deliverable/linux.git] / drivers / net / wireless / libertas / rx.c

/*
 * This file contains the handling of RX in wlan driver.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/etherdevice.h>
#include <linux/hardirq.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/export.h>
#include <net/cfg80211.h>

#include "defs.h"
#include "host.h"
#include "radiotap.h"
#include "decl.h"
#include "dev.h"
#include "mesh.h"

struct eth803hdr {
	u8 dest_addr[6];
	u8 src_addr[6];
	u16 h803_len;
} __packed;

struct rfc1042hdr {
	u8 llc_dsap;
	u8 llc_ssap;
	u8 llc_ctrl;
	u8 snap_oui[3];
	u16 snap_type;
} __packed;

struct rxpackethdr {
	struct eth803hdr eth803_hdr;
	struct rfc1042hdr rfc1042_hdr;
} __packed;

struct rx80211packethdr {
	struct rxpd rx_pd;
	void *eth80211_hdr;
} __packed;

static int process_rxed_802_11_packet(struct lbs_private *priv,
	struct sk_buff *skb);

/**
 * lbs_process_rxed_packet - processes received packet and forwards it
 * to kernel/upper layer
 *
 * @priv:	A pointer to &struct lbs_private
 * @skb:	A pointer to skb which includes the received packet
 * returns:	0 or -1
 */
int lbs_process_rxed_packet(struct lbs_private *priv, struct sk_buff *skb)
{
	int ret = 0;
	struct net_device *dev = priv->dev;
	struct rxpackethdr *p_rx_pkt;
	struct rxpd *p_rx_pd;
	int hdrchop;
	struct ethhdr *p_ethhdr;
	static const u8 rfc1042_eth_hdr[] = {
		0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00
	};

	lbs_deb_enter(LBS_DEB_RX);

	BUG_ON(!skb);

	skb->ip_summed = CHECKSUM_NONE;

	if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
		return process_rxed_802_11_packet(priv, skb);

	p_rx_pd = (struct rxpd *) skb->data;
	p_rx_pkt = (struct rxpackethdr *) ((u8 *)p_rx_pd +
		le32_to_cpu(p_rx_pd->pkt_ptr));

	dev = lbs_mesh_set_dev(priv, dev, p_rx_pd);

	lbs_deb_hex(LBS_DEB_RX, "RX Data: Before chop rxpd", skb->data,
		 min_t(unsigned int, skb->len, 100));

	if (skb->len < (ETH_HLEN + 8 + sizeof(struct rxpd))) {
		lbs_deb_rx("rx err: frame received with bad length\n");
		dev->stats.rx_length_errors++;
		ret = 0;
		dev_kfree_skb(skb);
		goto done;
	}

	lbs_deb_rx("rx data: skb->len - pkt_ptr = %d-%zd = %zd\n",
		skb->len, (size_t)le32_to_cpu(p_rx_pd->pkt_ptr),
		skb->len - (size_t)le32_to_cpu(p_rx_pd->pkt_ptr));

	lbs_deb_hex(LBS_DEB_RX, "RX Data: Dest", p_rx_pkt->eth803_hdr.dest_addr,
		sizeof(p_rx_pkt->eth803_hdr.dest_addr));
	lbs_deb_hex(LBS_DEB_RX, "RX Data: Src", p_rx_pkt->eth803_hdr.src_addr,
		sizeof(p_rx_pkt->eth803_hdr.src_addr));

	if (memcmp(&p_rx_pkt->rfc1042_hdr,
		   rfc1042_eth_hdr, sizeof(rfc1042_eth_hdr)) == 0) {
		/*
		 *  Replace the 803 header and rfc1042 header (llc/snap) with an
		 *    EthernetII header, keep the src/dst and snap_type (ethertype)
		 *
		 *  The firmware only passes up SNAP frames converting
		 *    all RX Data from 802.11 to 802.2/LLC/SNAP frames.
		 *
		 *  To create the Ethernet II, just move the src, dst address right
		 *    before the snap_type.
		 */
		p_ethhdr = (struct ethhdr *)
		    ((u8 *) &p_rx_pkt->eth803_hdr
		     + sizeof(p_rx_pkt->eth803_hdr) + sizeof(p_rx_pkt->rfc1042_hdr)
		     - sizeof(p_rx_pkt->eth803_hdr.dest_addr)
		     - sizeof(p_rx_pkt->eth803_hdr.src_addr)
		     - sizeof(p_rx_pkt->rfc1042_hdr.snap_type));

		memcpy(p_ethhdr->h_source, p_rx_pkt->eth803_hdr.src_addr,
		       sizeof(p_ethhdr->h_source));
		memcpy(p_ethhdr->h_dest, p_rx_pkt->eth803_hdr.dest_addr,
		       sizeof(p_ethhdr->h_dest));

		/* Chop off the rxpd + the excess memory from the 802.2/llc/snap header
		 *   that was removed
		 */
		hdrchop = (u8 *)p_ethhdr - (u8 *)p_rx_pd;
	} else {
		lbs_deb_hex(LBS_DEB_RX, "RX Data: LLC/SNAP",
			(u8 *) &p_rx_pkt->rfc1042_hdr,
			sizeof(p_rx_pkt->rfc1042_hdr));

		/* Chop off the rxpd */
		hdrchop = (u8 *)&p_rx_pkt->eth803_hdr - (u8 *)p_rx_pd;
	}

	/* Chop off the leading header bytes so the skb points to the start of
	 *   either the reconstructed EthII frame or the 802.2/llc/snap frame
	 */
	skb_pull(skb, hdrchop);

	priv->cur_rate = lbs_fw_index_to_data_rate(p_rx_pd->rx_rate);

	lbs_deb_rx("rx data: size of actual packet %d\n", skb->len);
	dev->stats.rx_bytes += skb->len;
	dev->stats.rx_packets++;

	skb->protocol = eth_type_trans(skb, dev);
	if (in_interrupt())
		netif_rx(skb);
	else
		netif_rx_ni(skb);

	ret = 0;
done:
	lbs_deb_leave_args(LBS_DEB_RX, "ret %d", ret);
	return ret;
}
EXPORT_SYMBOL_GPL(lbs_process_rxed_packet);

/**
 * convert_mv_rate_to_radiotap - converts Tx/Rx rates from Marvell WLAN format
 * (see Table 2 in Section 3.1) to IEEE80211_RADIOTAP_RATE units (500 Kb/s)
 *
 * @rate:	Input rate
 * returns:	Output Rate (0 if invalid)
 */
static u8 convert_mv_rate_to_radiotap(u8 rate)
{
	switch (rate) {
	case 0:		/*   1 Mbps */
		return 2;
	case 1:		/*   2 Mbps */
		return 4;
	case 2:		/* 5.5 Mbps */
		return 11;
	case 3:		/*  11 Mbps */
		return 22;
	/* case 4: reserved */
	case 5:		/*   6 Mbps */
		return 12;
	case 6:		/*   9 Mbps */
		return 18;
	case 7:		/*  12 Mbps */
		return 24;
	case 8:		/*  18 Mbps */
		return 36;
	case 9:		/*  24 Mbps */
		return 48;
	case 10:		/*  36 Mbps */
		return 72;
	case 11:		/*  48 Mbps */
		return 96;
	case 12:		/*  54 Mbps */
		return 108;
	}
	pr_alert("Invalid Marvell WLAN rate %i\n", rate);
	return 0;
}

/**
 * process_rxed_802_11_packet - processes a received 802.11 packet and forwards
 * it to kernel/upper layer
 *
 * @priv:	A pointer to &struct lbs_private
 * @skb:	A pointer to skb which includes the received packet
 * returns:	0 or -1
 */
static int process_rxed_802_11_packet(struct lbs_private *priv,
	struct sk_buff *skb)
{
	int ret = 0;
	struct net_device *dev = priv->dev;
	struct rx80211packethdr *p_rx_pkt;
	struct rxpd *prxpd;
	struct rx_radiotap_hdr radiotap_hdr;
	struct rx_radiotap_hdr *pradiotap_hdr;

	lbs_deb_enter(LBS_DEB_RX);

	p_rx_pkt = (struct rx80211packethdr *) skb->data;
	prxpd = &p_rx_pkt->rx_pd;

	/* lbs_deb_hex(LBS_DEB_RX, "RX Data: Before chop rxpd", skb->data, min(skb->len, 100)); */

	if (skb->len < (ETH_HLEN + 8 + sizeof(struct rxpd))) {
		lbs_deb_rx("rx err: frame received with bad length\n");
		dev->stats.rx_length_errors++;
		ret = -EINVAL;
		kfree_skb(skb);
		goto done;
	}

	lbs_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
	       skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));

	/* create the exported radio header */

	/* radiotap header */
	memset(&radiotap_hdr, 0, sizeof(radiotap_hdr));
	/* XXX must check radiotap_hdr.hdr.it_pad for pad */
	radiotap_hdr.hdr.it_len = cpu_to_le16 (sizeof(struct rx_radiotap_hdr));
	radiotap_hdr.hdr.it_present = cpu_to_le32 (RX_RADIOTAP_PRESENT);
	radiotap_hdr.rate = convert_mv_rate_to_radiotap(prxpd->rx_rate);
	/* XXX must check no carryout */
	radiotap_hdr.antsignal = prxpd->snr + prxpd->nf;

	/* chop the rxpd */
	skb_pull(skb, sizeof(struct rxpd));

	/* add space for the new radio header */
	if ((skb_headroom(skb) < sizeof(struct rx_radiotap_hdr)) &&
	    pskb_expand_head(skb, sizeof(struct rx_radiotap_hdr), 0, GFP_ATOMIC)) {
		netdev_alert(dev, "%s: couldn't pskb_expand_head\n", __func__);
		ret = -ENOMEM;
		kfree_skb(skb);
		goto done;
	}

	pradiotap_hdr = (void *)skb_push(skb, sizeof(struct rx_radiotap_hdr));
	memcpy(pradiotap_hdr, &radiotap_hdr, sizeof(struct rx_radiotap_hdr));

	priv->cur_rate = lbs_fw_index_to_data_rate(prxpd->rx_rate);

	lbs_deb_rx("rx data: size of actual packet %d\n", skb->len);
	dev->stats.rx_bytes += skb->len;
	dev->stats.rx_packets++;

	skb->protocol = eth_type_trans(skb, priv->dev);

	if (in_interrupt())
		netif_rx(skb);
	else
		netif_rx_ni(skb);

	ret = 0;

done:
	lbs_deb_leave_args(LBS_DEB_RX, "ret %d", ret);
	return ret;
}
Commit	Line	Data
8973a6e7 RD	1	/*
	2	* This file contains the handling of RX in wlan driver.
	3	*/
0e4e06ae JP	4
	5	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	6
876c9d3a	7	#include <linux/etherdevice.h>
a6b7a407	8	#include <linux/hardirq.h>
5a0e3ad6	9	#include <linux/slab.h>
876c9d3a	10	#include <linux/types.h>
ee40fa06	11	#include <linux/export.h>
e86dc1ca	12	#include <net/cfg80211.h>
876c9d3a	13
e86dc1ca	14	#include "defs.h"
9e66e701	15	#include "host.h"
876c9d3a MT	16	#include "radiotap.h"
	17	#include "decl.h"
	18	#include "dev.h"
49fee692	19	#include "mesh.h"
876c9d3a MT	20
	21	struct eth803hdr {
	22	u8 dest_addr[6];
	23	u8 src_addr[6];
	24	u16 h803_len;
ba2d3587	25	} __packed;
876c9d3a MT	26
	27	struct rfc1042hdr {
	28	u8 llc_dsap;
	29	u8 llc_ssap;
	30	u8 llc_ctrl;
	31	u8 snap_oui[3];
	32	u16 snap_type;
ba2d3587	33	} __packed;
876c9d3a MT	34
876c9d3a MT	35	struct rxpackethdr {
876c9d3a MT	36	struct eth803hdr eth803_hdr;
876c9d3a MT	37	struct rfc1042hdr rfc1042_hdr;
ba2d3587	38	} __packed;
876c9d3a MT	39
	40	struct rx80211packethdr {
	41	struct rxpd rx_pd;
	42	void *eth80211_hdr;
ba2d3587	43	} __packed;
876c9d3a	44
69f9032d HS	45	static int process_rxed_802_11_packet(struct lbs_private *priv,
69f9032d HS	46	struct sk_buff *skb);
876c9d3a	47
876c9d3a	48	/**
8973a6e7 RD	49	* lbs_process_rxed_packet - processes received packet and forwards it
8973a6e7 RD	50	* to kernel/upper layer
876c9d3a	51	*
8973a6e7 RD	52	* @priv: A pointer to &struct lbs_private
	53	* @skb: A pointer to skb which includes the received packet
	54	* returns: 0 or -1
876c9d3a	55	*/
69f9032d	56	int lbs_process_rxed_packet(struct lbs_private priv, struct sk_buff skb)
876c9d3a	57	{
876c9d3a	58	int ret = 0;
6f93a8e7	59	struct net_device *dev = priv->dev;
876c9d3a MT	60	struct rxpackethdr *p_rx_pkt;
876c9d3a MT	61	struct rxpd *p_rx_pd;
876c9d3a MT	62	int hdrchop;
876c9d3a MT	63	struct ethhdr *p_ethhdr;
482e039f JP	64	static const u8 rfc1042_eth_hdr[] = {
	65	0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00
	66	};
876c9d3a	67
9012b28a	68	lbs_deb_enter(LBS_DEB_RX);
876c9d3a	69
7919b89c HS	70	BUG_ON(!skb);
7919b89c HS	71
6f93a8e7 DW	72	skb->ip_summed = CHECKSUM_NONE;
6f93a8e7 DW	73
e86dc1ca	74	if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
876c9d3a MT	75	return process_rxed_802_11_packet(priv, skb);
876c9d3a MT	76
e45d8e53 BZ	77	p_rx_pd = (struct rxpd *) skb->data;
	78	p_rx_pkt = (struct rxpackethdr ) ((u8 )p_rx_pd +
	79	le32_to_cpu(p_rx_pd->pkt_ptr));
e0e42da3 HS	80
e0e42da3 HS	81	dev = lbs_mesh_set_dev(priv, dev, p_rx_pd);
876c9d3a	82
ece56191	83	lbs_deb_hex(LBS_DEB_RX, "RX Data: Before chop rxpd", skb->data,
876c9d3a MT	84	min_t(unsigned int, skb->len, 100));
	85
	86	if (skb->len < (ETH_HLEN + 8 + sizeof(struct rxpd))) {
9012b28a	87	lbs_deb_rx("rx err: frame received with bad length\n");
bbfc6b78	88	dev->stats.rx_length_errors++;
876c9d3a	89	ret = 0;
f54930f3	90	dev_kfree_skb(skb);
876c9d3a MT	91	goto done;
	92	}
	93
e45d8e53	94	lbs_deb_rx("rx data: skb->len - pkt_ptr = %d-%zd = %zd\n",
a2caba6b JL	95	skb->len, (size_t)le32_to_cpu(p_rx_pd->pkt_ptr),
a2caba6b JL	96	skb->len - (size_t)le32_to_cpu(p_rx_pd->pkt_ptr));
876c9d3a	97
ece56191	98	lbs_deb_hex(LBS_DEB_RX, "RX Data: Dest", p_rx_pkt->eth803_hdr.dest_addr,
876c9d3a	99	sizeof(p_rx_pkt->eth803_hdr.dest_addr));
ece56191	100	lbs_deb_hex(LBS_DEB_RX, "RX Data: Src", p_rx_pkt->eth803_hdr.src_addr,
876c9d3a MT	101	sizeof(p_rx_pkt->eth803_hdr.src_addr));
	102
	103	if (memcmp(&p_rx_pkt->rfc1042_hdr,
	104	rfc1042_eth_hdr, sizeof(rfc1042_eth_hdr)) == 0) {
	105	/*
	106	* Replace the 803 header and rfc1042 header (llc/snap) with an
	107	* EthernetII header, keep the src/dst and snap_type (ethertype)
	108	*
	109	* The firmware only passes up SNAP frames converting
	110	* all RX Data from 802.11 to 802.2/LLC/SNAP frames.
	111	*
	112	* To create the Ethernet II, just move the src, dst address right
	113	* before the snap_type.
	114	*/
	115	p_ethhdr = (struct ethhdr *)
819cf15e	116	((u8 *) &p_rx_pkt->eth803_hdr
876c9d3a MT	117	+ sizeof(p_rx_pkt->eth803_hdr) + sizeof(p_rx_pkt->rfc1042_hdr)
	118	- sizeof(p_rx_pkt->eth803_hdr.dest_addr)
	119	- sizeof(p_rx_pkt->eth803_hdr.src_addr)
	120	- sizeof(p_rx_pkt->rfc1042_hdr.snap_type));
	121
	122	memcpy(p_ethhdr->h_source, p_rx_pkt->eth803_hdr.src_addr,
	123	sizeof(p_ethhdr->h_source));
	124	memcpy(p_ethhdr->h_dest, p_rx_pkt->eth803_hdr.dest_addr,
	125	sizeof(p_ethhdr->h_dest));
	126
	127	/* Chop off the rxpd + the excess memory from the 802.2/llc/snap header
	128	* that was removed
	129	*/
e45d8e53	130	hdrchop = (u8 )p_ethhdr - (u8 )p_rx_pd;
876c9d3a	131	} else {
ece56191	132	lbs_deb_hex(LBS_DEB_RX, "RX Data: LLC/SNAP",
819cf15e	133	(u8 *) &p_rx_pkt->rfc1042_hdr,
876c9d3a MT	134	sizeof(p_rx_pkt->rfc1042_hdr));
	135
	136	/* Chop off the rxpd */
e45d8e53	137	hdrchop = (u8 )&p_rx_pkt->eth803_hdr - (u8 )p_rx_pd;
876c9d3a MT	138	}
	139
	140	/* Chop off the leading header bytes so the skb points to the start of
	141	* either the reconstructed EthII frame or the 802.2/llc/snap frame
	142	*/
	143	skb_pull(skb, hdrchop);
	144
e86dc1ca	145	priv->cur_rate = lbs_fw_index_to_data_rate(p_rx_pd->rx_rate);
876c9d3a	146
9012b28a	147	lbs_deb_rx("rx data: size of actual packet %d\n", skb->len);
bbfc6b78 SH	148	dev->stats.rx_bytes += skb->len;
bbfc6b78 SH	149	dev->stats.rx_packets++;
876c9d3a	150
6f93a8e7	151	skb->protocol = eth_type_trans(skb, dev);
ae3e0fcf HS	152	if (in_interrupt())
	153	netif_rx(skb);
	154	else
	155	netif_rx_ni(skb);
3d4bd24b	156
876c9d3a MT	157	ret = 0;
876c9d3a MT	158	done:
9012b28a	159	lbs_deb_leave_args(LBS_DEB_RX, "ret %d", ret);
876c9d3a MT	160	return ret;
876c9d3a MT	161	}
10078321	162	EXPORT_SYMBOL_GPL(lbs_process_rxed_packet);
876c9d3a MT	163
876c9d3a MT	164	/**
8973a6e7 RD	165	* convert_mv_rate_to_radiotap - converts Tx/Rx rates from Marvell WLAN format
8973a6e7 RD	166	* (see Table 2 in Section 3.1) to IEEE80211_RADIOTAP_RATE units (500 Kb/s)
876c9d3a	167	*
8973a6e7 RD	168	* @rate: Input rate
8973a6e7 RD	169	* returns: Output Rate (0 if invalid)
876c9d3a MT	170	*/
	171	static u8 convert_mv_rate_to_radiotap(u8 rate)
	172	{
	173	switch (rate) {
	174	case 0: /* 1 Mbps */
	175	return 2;
	176	case 1: /* 2 Mbps */
	177	return 4;
	178	case 2: /* 5.5 Mbps */
	179	return 11;
	180	case 3: /* 11 Mbps */
	181	return 22;
965f8bbc LCC	182	/* case 4: reserved */
965f8bbc LCC	183	case 5: /* 6 Mbps */
876c9d3a	184	return 12;
965f8bbc	185	case 6: /* 9 Mbps */
876c9d3a	186	return 18;
965f8bbc	187	case 7: /* 12 Mbps */
876c9d3a	188	return 24;
965f8bbc	189	case 8: /* 18 Mbps */
876c9d3a	190	return 36;
965f8bbc	191	case 9: /* 24 Mbps */
876c9d3a	192	return 48;
965f8bbc	193	case 10: /* 36 Mbps */
876c9d3a	194	return 72;
965f8bbc	195	case 11: /* 48 Mbps */
876c9d3a	196	return 96;
965f8bbc	197	case 12: /* 54 Mbps */
876c9d3a MT	198	return 108;
876c9d3a MT	199	}
0e4e06ae	200	pr_alert("Invalid Marvell WLAN rate %i\n", rate);
876c9d3a MT	201	return 0;
	202	}
	203
	204	/**
8973a6e7 RD	205	* process_rxed_802_11_packet - processes a received 802.11 packet and forwards
8973a6e7 RD	206	* it to kernel/upper layer
876c9d3a	207	*
8973a6e7 RD	208	* @priv: A pointer to &struct lbs_private
	209	* @skb: A pointer to skb which includes the received packet
	210	* returns: 0 or -1
876c9d3a	211	*/
69f9032d HS	212	static int process_rxed_802_11_packet(struct lbs_private *priv,
69f9032d HS	213	struct sk_buff *skb)
876c9d3a	214	{
876c9d3a	215	int ret = 0;
bbfc6b78	216	struct net_device *dev = priv->dev;
876c9d3a MT	217	struct rx80211packethdr *p_rx_pkt;
	218	struct rxpd *prxpd;
	219	struct rx_radiotap_hdr radiotap_hdr;
	220	struct rx_radiotap_hdr *pradiotap_hdr;
	221
9012b28a	222	lbs_deb_enter(LBS_DEB_RX);
876c9d3a MT	223
	224	p_rx_pkt = (struct rx80211packethdr *) skb->data;
	225	prxpd = &p_rx_pkt->rx_pd;
	226
819cf15e	227	/* lbs_deb_hex(LBS_DEB_RX, "RX Data: Before chop rxpd", skb->data, min(skb->len, 100)); */
876c9d3a MT	228
876c9d3a MT	229	if (skb->len < (ETH_HLEN + 8 + sizeof(struct rxpd))) {
7bf02c29	230	lbs_deb_rx("rx err: frame received with bad length\n");
bbfc6b78	231	dev->stats.rx_length_errors++;
7bf02c29	232	ret = -EINVAL;
b700a98c	233	kfree_skb(skb);
876c9d3a MT	234	goto done;
	235	}
	236
9012b28a	237	lbs_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
876c9d3a MT	238	skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));
	239
	240	/* create the exported radio header */
876c9d3a	241
180be755	242	/* radiotap header */
c6a6368b PB	243	memset(&radiotap_hdr, 0, sizeof(radiotap_hdr));
c6a6368b PB	244	/* XXX must check radiotap_hdr.hdr.it_pad for pad */
180be755 DW	245	radiotap_hdr.hdr.it_len = cpu_to_le16 (sizeof(struct rx_radiotap_hdr));
180be755 DW	246	radiotap_hdr.hdr.it_present = cpu_to_le32 (RX_RADIOTAP_PRESENT);
180be755 DW	247	radiotap_hdr.rate = convert_mv_rate_to_radiotap(prxpd->rx_rate);
	248	/* XXX must check no carryout */
	249	radiotap_hdr.antsignal = prxpd->snr + prxpd->nf;
180be755 DW	250
	251	/* chop the rxpd */
	252	skb_pull(skb, sizeof(struct rxpd));
	253
	254	/* add space for the new radio header */
	255	if ((skb_headroom(skb) < sizeof(struct rx_radiotap_hdr)) &&
7bf02c29	256	pskb_expand_head(skb, sizeof(struct rx_radiotap_hdr), 0, GFP_ATOMIC)) {
f3a57fd1	257	netdev_alert(dev, "%s: couldn't pskb_expand_head\n", __func__);
7bf02c29 DW	258	ret = -ENOMEM;
	259	kfree_skb(skb);
	260	goto done;
876c9d3a MT	261	}
876c9d3a MT	262
180be755 DW	263	pradiotap_hdr = (void *)skb_push(skb, sizeof(struct rx_radiotap_hdr));
	264	memcpy(pradiotap_hdr, &radiotap_hdr, sizeof(struct rx_radiotap_hdr));
	265
e86dc1ca	266	priv->cur_rate = lbs_fw_index_to_data_rate(prxpd->rx_rate);
876c9d3a	267
9012b28a	268	lbs_deb_rx("rx data: size of actual packet %d\n", skb->len);
bbfc6b78 SH	269	dev->stats.rx_bytes += skb->len;
bbfc6b78 SH	270	dev->stats.rx_packets++;
876c9d3a	271
e86dc1ca KD	272	skb->protocol = eth_type_trans(skb, priv->dev);
	273
	274	if (in_interrupt())
	275	netif_rx(skb);
	276	else
	277	netif_rx_ni(skb);
3d4bd24b	278
876c9d3a	279	ret = 0;
876c9d3a	280
9012b28a	281	done:
9012b28a HS	282	lbs_deb_leave_args(LBS_DEB_RX, "ret %d", ret);
9012b28a HS	283	return ret;
876c9d3a	284	}