* This file contains the handling of RX in wlan driver.
*/
#include <linux/etherdevice.h>
+#include <linux/slab.h>
#include <linux/types.h>
-#include "hostcmd.h"
+#include "host.h"
#include "radiotap.h"
#include "decl.h"
#include "dev.h"
} __attribute__ ((packed));
struct rxpackethdr {
- struct rxpd rx_pd;
struct eth803hdr eth803_hdr;
struct rfc1042hdr rfc1042_hdr;
} __attribute__ ((packed));
struct sk_buff *skb);
/**
- * @brief This function computes the avgSNR .
+ * @brief This function computes the avgSNR .
*
- * @param priv A pointer to struct lbs_private structure
- * @return avgSNR
+ * @param priv A pointer to struct lbs_private structure
+ * @return avgSNR
*/
static u8 lbs_getavgsnr(struct lbs_private *priv)
{
u8 i;
u16 temp = 0;
- struct lbs_adapter *adapter = priv->adapter;
- if (adapter->numSNRNF == 0)
+ if (priv->numSNRNF == 0)
return 0;
- for (i = 0; i < adapter->numSNRNF; i++)
- temp += adapter->rawSNR[i];
- return (u8) (temp / adapter->numSNRNF);
+ for (i = 0; i < priv->numSNRNF; i++)
+ temp += priv->rawSNR[i];
+ return (u8) (temp / priv->numSNRNF);
}
/**
- * @brief This function computes the AvgNF
+ * @brief This function computes the AvgNF
*
- * @param priv A pointer to struct lbs_private structure
- * @return AvgNF
+ * @param priv A pointer to struct lbs_private structure
+ * @return AvgNF
*/
static u8 lbs_getavgnf(struct lbs_private *priv)
{
u8 i;
u16 temp = 0;
- struct lbs_adapter *adapter = priv->adapter;
- if (adapter->numSNRNF == 0)
+ if (priv->numSNRNF == 0)
return 0;
- for (i = 0; i < adapter->numSNRNF; i++)
- temp += adapter->rawNF[i];
- return (u8) (temp / adapter->numSNRNF);
+ for (i = 0; i < priv->numSNRNF; i++)
+ temp += priv->rawNF[i];
+ return (u8) (temp / priv->numSNRNF);
}
/**
- * @brief This function save the raw SNR/NF to our internel buffer
+ * @brief This function save the raw SNR/NF to our internel buffer
*
- * @param priv A pointer to struct lbs_private structure
- * @param prxpd A pointer to rxpd structure of received packet
- * @return n/a
+ * @param priv A pointer to struct lbs_private structure
+ * @param prxpd A pointer to rxpd structure of received packet
+ * @return n/a
*/
static void lbs_save_rawSNRNF(struct lbs_private *priv, struct rxpd *p_rx_pd)
{
- struct lbs_adapter *adapter = priv->adapter;
- if (adapter->numSNRNF < DEFAULT_DATA_AVG_FACTOR)
- adapter->numSNRNF++;
- adapter->rawSNR[adapter->nextSNRNF] = p_rx_pd->snr;
- adapter->rawNF[adapter->nextSNRNF] = p_rx_pd->nf;
- adapter->nextSNRNF++;
- if (adapter->nextSNRNF >= DEFAULT_DATA_AVG_FACTOR)
- adapter->nextSNRNF = 0;
- return;
+ if (priv->numSNRNF < DEFAULT_DATA_AVG_FACTOR)
+ priv->numSNRNF++;
+ priv->rawSNR[priv->nextSNRNF] = p_rx_pd->snr;
+ priv->rawNF[priv->nextSNRNF] = p_rx_pd->nf;
+ priv->nextSNRNF++;
+ if (priv->nextSNRNF >= DEFAULT_DATA_AVG_FACTOR)
+ priv->nextSNRNF = 0;
}
/**
- * @brief This function computes the RSSI in received packet.
+ * @brief This function computes the RSSI in received packet.
*
- * @param priv A pointer to struct lbs_private structure
- * @param prxpd A pointer to rxpd structure of received packet
- * @return n/a
+ * @param priv A pointer to struct lbs_private structure
+ * @param prxpd A pointer to rxpd structure of received packet
+ * @return n/a
*/
static void lbs_compute_rssi(struct lbs_private *priv, struct rxpd *p_rx_pd)
{
- struct lbs_adapter *adapter = priv->adapter;
lbs_deb_enter(LBS_DEB_RX);
lbs_deb_rx("rxpd: SNR %d, NF %d\n", p_rx_pd->snr, p_rx_pd->nf);
lbs_deb_rx("before computing SNR: SNR-avg = %d, NF-avg = %d\n",
- adapter->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE,
- adapter->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE);
+ priv->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE,
+ priv->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE);
- adapter->SNR[TYPE_RXPD][TYPE_NOAVG] = p_rx_pd->snr;
- adapter->NF[TYPE_RXPD][TYPE_NOAVG] = p_rx_pd->nf;
+ priv->SNR[TYPE_RXPD][TYPE_NOAVG] = p_rx_pd->snr;
+ priv->NF[TYPE_RXPD][TYPE_NOAVG] = p_rx_pd->nf;
lbs_save_rawSNRNF(priv, p_rx_pd);
- adapter->SNR[TYPE_RXPD][TYPE_AVG] = lbs_getavgsnr(priv) * AVG_SCALE;
- adapter->NF[TYPE_RXPD][TYPE_AVG] = lbs_getavgnf(priv) * AVG_SCALE;
+ priv->SNR[TYPE_RXPD][TYPE_AVG] = lbs_getavgsnr(priv) * AVG_SCALE;
+ priv->NF[TYPE_RXPD][TYPE_AVG] = lbs_getavgnf(priv) * AVG_SCALE;
lbs_deb_rx("after computing SNR: SNR-avg = %d, NF-avg = %d\n",
- adapter->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE,
- adapter->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE);
+ priv->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE,
+ priv->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE);
- adapter->RSSI[TYPE_RXPD][TYPE_NOAVG] =
- CAL_RSSI(adapter->SNR[TYPE_RXPD][TYPE_NOAVG],
- adapter->NF[TYPE_RXPD][TYPE_NOAVG]);
+ priv->RSSI[TYPE_RXPD][TYPE_NOAVG] =
+ CAL_RSSI(priv->SNR[TYPE_RXPD][TYPE_NOAVG],
+ priv->NF[TYPE_RXPD][TYPE_NOAVG]);
- adapter->RSSI[TYPE_RXPD][TYPE_AVG] =
- CAL_RSSI(adapter->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE,
- adapter->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE);
+ priv->RSSI[TYPE_RXPD][TYPE_AVG] =
+ CAL_RSSI(priv->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE,
+ priv->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE);
lbs_deb_leave(LBS_DEB_RX);
}
-void lbs_upload_rx_packet(struct lbs_private *priv, struct sk_buff *skb)
-{
- lbs_deb_rx("skb->data %p\n", skb->data);
-
- if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
- skb->protocol = eth_type_trans(skb, priv->rtap_net_dev);
- } else {
- if (priv->mesh_dev && IS_MESH_FRAME(skb))
- skb->protocol = eth_type_trans(skb, priv->mesh_dev);
- else
- skb->protocol = eth_type_trans(skb, priv->dev);
- }
- skb->ip_summed = CHECKSUM_NONE;
- netif_rx(skb);
-}
-
/**
* @brief This function processes received packet and forwards it
* to kernel/upper layer
*
- * @param priv A pointer to struct lbs_private
- * @param skb A pointer to skb which includes the received packet
- * @return 0 or -1
+ * @param priv A pointer to struct lbs_private
+ * @param skb A pointer to skb which includes the received packet
+ * @return 0 or -1
*/
int lbs_process_rxed_packet(struct lbs_private *priv, struct sk_buff *skb)
{
- struct lbs_adapter *adapter = priv->adapter;
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;
-
const u8 rfc1042_eth_hdr[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
lbs_deb_enter(LBS_DEB_RX);
- if (priv->adapter->monitormode != LBS_MONITOR_OFF)
+ BUG_ON(!skb);
+
+ skb->ip_summed = CHECKSUM_NONE;
+
+ if (priv->monitormode)
return process_rxed_802_11_packet(priv, skb);
- p_rx_pkt = (struct rxpackethdr *) skb->data;
- p_rx_pd = &p_rx_pkt->rx_pd;
- if (p_rx_pd->rx_control & RxPD_MESH_FRAME)
- SET_MESH_FRAME(skb);
- else
- UNSET_MESH_FRAME(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");
- priv->stats.rx_length_errors++;
+ dev->stats.rx_length_errors++;
ret = 0;
+ dev_kfree_skb(skb);
goto done;
}
- /*
- * Check rxpd status and update 802.3 stat,
- */
- if (!(p_rx_pd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) {
- lbs_deb_rx("rx err: frame received with bad status\n");
- lbs_pr_alert("rxpd not ok\n");
- priv->stats.rx_errors++;
- ret = 0;
- 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));
+ 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));
* before the snap_type.
*/
p_ethhdr = (struct ethhdr *)
- ((u8 *) & p_rx_pkt->eth803_hdr
+ ((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)
/* Chop off the rxpd + the excess memory from the 802.2/llc/snap header
* that was removed
*/
- hdrchop = (u8 *) p_ethhdr - (u8 *) p_rx_pkt;
+ 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,
+ (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_pkt;
+ 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
/* Take the data rate from the rxpd structure
* only if the rate is auto
*/
- if (adapter->auto_rate)
- adapter->cur_rate = lbs_fw_index_to_data_rate(p_rx_pd->rx_rate);
+ if (priv->enablehwauto)
+ priv->cur_rate = lbs_fw_index_to_data_rate(p_rx_pd->rx_rate);
lbs_compute_rssi(priv, p_rx_pd);
lbs_deb_rx("rx data: size of actual packet %d\n", skb->len);
- priv->stats.rx_bytes += skb->len;
- priv->stats.rx_packets++;
+ dev->stats.rx_bytes += skb->len;
+ dev->stats.rx_packets++;
- lbs_upload_rx_packet(priv, skb);
+ skb->protocol = eth_type_trans(skb, dev);
+ if (in_interrupt())
+ netif_rx(skb);
+ else
+ netif_rx_ni(skb);
ret = 0;
done:
* @brief This function converts Tx/Rx rates from the Marvell WLAN format
* (see Table 2 in Section 3.1) to IEEE80211_RADIOTAP_RATE units (500 Kb/s)
*
- * @param rate Input rate
- * @return Output Rate (0 if invalid)
+ * @param rate Input rate
+ * @return Output Rate (0 if invalid)
*/
static u8 convert_mv_rate_to_radiotap(u8 rate)
{
* @brief This function processes a received 802.11 packet and forwards it
* to kernel/upper layer
*
- * @param priv A pointer to struct lbs_private
- * @param skb A pointer to skb which includes the received packet
- * @return 0 or -1
+ * @param priv A pointer to struct lbs_private
+ * @param skb A pointer to skb which includes the received packet
+ * @return 0 or -1
*/
static int process_rxed_802_11_packet(struct lbs_private *priv,
struct sk_buff *skb)
{
- struct lbs_adapter *adapter = priv->adapter;
int ret = 0;
-
+ struct net_device *dev = priv->dev;
struct rx80211packethdr *p_rx_pkt;
struct rxpd *prxpd;
struct rx_radiotap_hdr radiotap_hdr;
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));
+ /* 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 wit bad length\n");
- priv->stats.rx_length_errors++;
- ret = 0;
+ lbs_deb_rx("rx err: frame received with bad length\n");
+ dev->stats.rx_length_errors++;
+ ret = -EINVAL;
+ kfree_skb(skb);
goto done;
}
- /*
- * Check rxpd status and update 802.3 stat,
- */
- if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) {
- //lbs_deb_rx("rx err: frame received with bad status\n");
- priv->stats.rx_errors++;
- }
-
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 */
- if (priv->adapter->monitormode == LBS_MONITOR_OFF) {
- /* no radio header */
- /* chop the rxpd */
- skb_pull(skb, sizeof(struct rxpd));
- }
- else {
- /* radiotap header */
- radiotap_hdr.hdr.it_version = 0;
- /* XXX must check this value for pad */
- radiotap_hdr.hdr.it_pad = 0;
- radiotap_hdr.hdr.it_len = cpu_to_le16 (sizeof(struct rx_radiotap_hdr));
- radiotap_hdr.hdr.it_present = cpu_to_le32 (RX_RADIOTAP_PRESENT);
- /* unknown values */
- radiotap_hdr.flags = 0;
- radiotap_hdr.chan_freq = 0;
- radiotap_hdr.chan_flags = 0;
- radiotap_hdr.antenna = 0;
- /* known values */
- radiotap_hdr.rate = convert_mv_rate_to_radiotap(prxpd->rx_rate);
- /* XXX must check no carryout */
- radiotap_hdr.antsignal = prxpd->snr + prxpd->nf;
- radiotap_hdr.rx_flags = 0;
- if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
- radiotap_hdr.rx_flags |= IEEE80211_RADIOTAP_F_RX_BADFCS;
- //memset(radiotap_hdr.pad, 0x11, IEEE80211_RADIOTAP_HDRLEN - 18);
-
- /* 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)) {
- lbs_pr_alert("%s: couldn't pskb_expand_head\n",
- __func__);
- }
-
- pradiotap_hdr =
- (struct rx_radiotap_hdr *)skb_push(skb,
- sizeof(struct
- rx_radiotap_hdr));
- memcpy(pradiotap_hdr, &radiotap_hdr,
- sizeof(struct rx_radiotap_hdr));
+ /* 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)) {
+ lbs_pr_alert("%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));
+
/* Take the data rate from the rxpd structure
* only if the rate is auto
*/
- if (adapter->auto_rate)
- adapter->cur_rate = lbs_fw_index_to_data_rate(prxpd->rx_rate);
+ if (priv->enablehwauto)
+ priv->cur_rate = lbs_fw_index_to_data_rate(prxpd->rx_rate);
lbs_compute_rssi(priv, prxpd);
lbs_deb_rx("rx data: size of actual packet %d\n", skb->len);
- priv->stats.rx_bytes += skb->len;
- priv->stats.rx_packets++;
+ dev->stats.rx_bytes += skb->len;
+ dev->stats.rx_packets++;
- lbs_upload_rx_packet(priv, skb);
+ skb->protocol = eth_type_trans(skb, priv->rtap_net_dev);
+ netif_rx(skb);
ret = 0;
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