]> err.no Git - linux-2.6/blobdiff - drivers/net/wireless/libertas/rx.c
libertas: Don't claim to have checksummed incoming packets.
[linux-2.6] / drivers / net / wireless / libertas / rx.c
index 96619a32951bc9dc14904dd3267c13c25d5f7189..a252a8f74becfddbe2b0fbebedaa626da3752579 100644 (file)
@@ -35,19 +35,20 @@ struct rx80211packethdr {
        void *eth80211_hdr;
 } __attribute__ ((packed));
 
-static int process_rxed_802_11_packet(wlan_private * priv, struct sk_buff *skb);
+static int process_rxed_802_11_packet(struct lbs_private *priv,
+       struct sk_buff *skb);
 
 /**
  *  @brief This function computes the avgSNR .
  *
- *  @param priv    A pointer to wlan_private structure
+ *  @param priv    A pointer to struct lbs_private structure
  *  @return       avgSNR
  */
-static u8 wlan_getavgsnr(wlan_private * priv)
+static u8 lbs_getavgsnr(struct lbs_private *priv)
 {
        u8 i;
        u16 temp = 0;
-       wlan_adapter *adapter = priv->adapter;
+       struct lbs_adapter *adapter = priv->adapter;
        if (adapter->numSNRNF == 0)
                return 0;
        for (i = 0; i < adapter->numSNRNF; i++)
@@ -59,14 +60,14 @@ static u8 wlan_getavgsnr(wlan_private * priv)
 /**
  *  @brief This function computes the AvgNF
  *
- *  @param priv    A pointer to wlan_private structure
+ *  @param priv    A pointer to struct lbs_private structure
  *  @return       AvgNF
  */
-static u8 wlan_getavgnf(wlan_private * priv)
+static u8 lbs_getavgnf(struct lbs_private *priv)
 {
        u8 i;
        u16 temp = 0;
-       wlan_adapter *adapter = priv->adapter;
+       struct lbs_adapter *adapter = priv->adapter;
        if (adapter->numSNRNF == 0)
                return 0;
        for (i = 0; i < adapter->numSNRNF; i++)
@@ -78,19 +79,19 @@ static u8 wlan_getavgnf(wlan_private * priv)
 /**
  *  @brief This function save the raw SNR/NF to our internel buffer
  *
- *  @param priv    A pointer to wlan_private structure
+ *  @param priv    A pointer to struct lbs_private structure
  *  @param prxpd   A pointer to rxpd structure of received packet
  *  @return       n/a
  */
-static void wlan_save_rawSNRNF(wlan_private * priv, struct rxpd *p_rx_pd)
+static void lbs_save_rawSNRNF(struct lbs_private *priv, struct rxpd *p_rx_pd)
 {
-       wlan_adapter *adapter = priv->adapter;
-       if (adapter->numSNRNF < adapter->data_avg_factor)
+       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 >= adapter->data_avg_factor)
+       if (adapter->nextSNRNF >= DEFAULT_DATA_AVG_FACTOR)
                adapter->nextSNRNF = 0;
        return;
 }
@@ -98,30 +99,28 @@ static void wlan_save_rawSNRNF(wlan_private * priv, struct rxpd *p_rx_pd)
 /**
  *  @brief This function computes the RSSI in received packet.
  *
- *  @param priv    A pointer to wlan_private structure
+ *  @param priv    A pointer to struct lbs_private structure
  *  @param prxpd   A pointer to rxpd structure of received packet
  *  @return       n/a
  */
-static void wlan_compute_rssi(wlan_private * priv, struct rxpd *p_rx_pd)
+static void lbs_compute_rssi(struct lbs_private *priv, struct rxpd *p_rx_pd)
 {
-       wlan_adapter *adapter = priv->adapter;
+       struct lbs_adapter *adapter = priv->adapter;
 
-       ENTER();
+       lbs_deb_enter(LBS_DEB_RX);
 
-       lbs_pr_debug(1, "rxpd: SNR = %d, NF = %d\n", p_rx_pd->snr, p_rx_pd->nf);
-       lbs_pr_debug(1, "Before computing SNR: SNR- avg = %d, NF-avg = %d\n",
+       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);
 
        adapter->SNR[TYPE_RXPD][TYPE_NOAVG] = p_rx_pd->snr;
        adapter->NF[TYPE_RXPD][TYPE_NOAVG] = p_rx_pd->nf;
-       wlan_save_rawSNRNF(priv, p_rx_pd);
+       lbs_save_rawSNRNF(priv, p_rx_pd);
 
-       adapter->rxpd_rate = p_rx_pd->rx_rate;
-
-       adapter->SNR[TYPE_RXPD][TYPE_AVG] = wlan_getavgsnr(priv) * AVG_SCALE;
-       adapter->NF[TYPE_RXPD][TYPE_AVG] = wlan_getavgnf(priv) * AVG_SCALE;
-       lbs_pr_debug(1, "After computing SNR: SNR-avg = %d, NF-avg = %d\n",
+       adapter->SNR[TYPE_RXPD][TYPE_AVG] = lbs_getavgsnr(priv) * AVG_SCALE;
+       adapter->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);
 
@@ -133,20 +132,22 @@ static void wlan_compute_rssi(wlan_private * priv, struct rxpd *p_rx_pd)
            CAL_RSSI(adapter->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE,
                     adapter->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE);
 
-       LEAVE();
+       lbs_deb_leave(LBS_DEB_RX);
 }
 
-void libertas_upload_rx_packet(wlan_private * priv, struct sk_buff *skb)
+void lbs_upload_rx_packet(struct lbs_private *priv, struct sk_buff *skb)
 {
-       lbs_pr_debug(1, "skb->data=%p\n", skb->data);
-
-       if(IS_MESH_FRAME(skb))
-               skb->dev = priv->mesh_dev;
-       else
-               skb->dev = priv->wlan_dev.netdev;
-       skb->protocol = eth_type_trans(skb, priv->wlan_dev.netdev);
-       skb->ip_summed = CHECKSUM_UNNECESSARY;
+       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);
 }
 
@@ -154,13 +155,13 @@ void libertas_upload_rx_packet(wlan_private * priv, struct sk_buff *skb)
  *  @brief This function processes received packet and forwards it
  *  to kernel/upper layer
  *
- *  @param priv    A pointer to wlan_private
+ *  @param priv    A pointer to struct lbs_private
  *  @param skb     A pointer to skb which includes the received packet
  *  @return       0 or -1
  */
-int libertas_process_rxed_packet(wlan_private * priv, struct sk_buff *skb)
+int lbs_process_rxed_packet(struct lbs_private *priv, struct sk_buff *skb)
 {
-       wlan_adapter *adapter = priv->adapter;
+       struct lbs_adapter *adapter = priv->adapter;
        int ret = 0;
 
        struct rxpackethdr *p_rx_pkt;
@@ -171,13 +172,9 @@ int libertas_process_rxed_packet(wlan_private * priv, struct sk_buff *skb)
 
        const u8 rfc1042_eth_hdr[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
 
-       ENTER();
-
-       if (priv->adapter->debugmode & MRVDRV_DEBUG_RX_PATH)
-               lbs_dbg_hex("RX packet: ", skb->data,
-                        min_t(unsigned int, skb->len, 100));
+       lbs_deb_enter(LBS_DEB_RX);
 
-       if (priv->adapter->linkmode == WLAN_LINKMODE_802_11)
+       if (priv->adapter->monitormode != LBS_MONITOR_OFF)
                return process_rxed_802_11_packet(priv, skb);
 
        p_rx_pkt = (struct rxpackethdr *) skb->data;
@@ -187,11 +184,11 @@ int libertas_process_rxed_packet(wlan_private * priv, struct sk_buff *skb)
        else
                UNSET_MESH_FRAME(skb);
 
-       lbs_dbg_hex("RX Data: Before chop rxpd", skb->data,
+       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_pr_debug(1, "RX error: FRAME RECEIVED WITH BAD LENGTH\n");
+               lbs_deb_rx("rx err: frame received with bad length\n");
                priv->stats.rx_length_errors++;
                ret = 0;
                goto done;
@@ -200,20 +197,20 @@ int libertas_process_rxed_packet(wlan_private * priv, struct sk_buff *skb)
        /*
         * Check rxpd status and update 802.3 stat,
         */
-       if (!(p_rx_pd->status & MRVDRV_RXPD_STATUS_OK)) {
-               lbs_pr_debug(1, "RX error: frame received with bad status\n");
-               lbs_pr_alert("rxpd Not OK\n");
+       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_pr_debug(1, "RX Data: skb->len - sizeof(RxPd) = %d - %zd = %zd\n",
+       lbs_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
               skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));
 
-       lbs_dbg_hex("RX Data: Dest", p_rx_pkt->eth803_hdr.dest_addr,
+       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_dbg_hex("RX Data: Src", p_rx_pkt->eth803_hdr.src_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,
@@ -245,7 +242,7 @@ int libertas_process_rxed_packet(wlan_private * priv, struct sk_buff *skb)
                 */
                hdrchop = (u8 *) p_ethhdr - (u8 *) p_rx_pkt;
        } else {
-               lbs_dbg_hex("RX Data: LLC/SNAP",
+               lbs_deb_hex(LBS_DEB_RX, "RX Data: LLC/SNAP",
                        (u8 *) & p_rx_pkt->rfc1042_hdr,
                        sizeof(p_rx_pkt->rfc1042_hdr));
 
@@ -261,23 +258,23 @@ int libertas_process_rxed_packet(wlan_private * priv, struct sk_buff *skb)
        /* Take the data rate from the rxpd structure
         * only if the rate is auto
         */
-       if (adapter->is_datarate_auto)
-               adapter->datarate = libertas_index_to_data_rate(p_rx_pd->rx_rate);
+       if (adapter->auto_rate)
+               adapter->cur_rate = lbs_fw_index_to_data_rate(p_rx_pd->rx_rate);
 
-       wlan_compute_rssi(priv, p_rx_pd);
+       lbs_compute_rssi(priv, p_rx_pd);
 
-       lbs_pr_debug(1, "RX Data: size of actual packet = %d\n", skb->len);
+       lbs_deb_rx("rx data: size of actual packet %d\n", skb->len);
        priv->stats.rx_bytes += skb->len;
        priv->stats.rx_packets++;
 
-       libertas_upload_rx_packet(priv, skb);
+       lbs_upload_rx_packet(priv, skb);
 
        ret = 0;
 done:
-       LEAVE();
-
+       lbs_deb_leave_args(LBS_DEB_RX, "ret %d", ret);
        return ret;
 }
+EXPORT_SYMBOL_GPL(lbs_process_rxed_packet);
 
 /**
  *  @brief This function converts Tx/Rx rates from the Marvell WLAN format
@@ -297,24 +294,25 @@ static u8 convert_mv_rate_to_radiotap(u8 rate)
                return 11;
        case 3:         /*  11 Mbps */
                return 22;
-       case 4:         /*   6 Mbps */
+       /* case 4: reserved */
+       case 5:         /*   6 Mbps */
                return 12;
-       case 5:         /*   9 Mbps */
+       case 6:         /*   9 Mbps */
                return 18;
-       case 6:         /*  12 Mbps */
+       case 7:         /*  12 Mbps */
                return 24;
-       case 7:         /*  18 Mbps */
+       case 8:         /*  18 Mbps */
                return 36;
-       case 8:         /*  24 Mbps */
+       case 9:         /*  24 Mbps */
                return 48;
-       case 9:         /*  36 Mbps */
+       case 10:                /*  36 Mbps */
                return 72;
-       case 10:                /*  48 Mbps */
+       case 11:                /*  48 Mbps */
                return 96;
-       case 11:                /*  54 Mbps */
+       case 12:                /*  54 Mbps */
                return 108;
        }
-       lbs_pr_alert( "Invalid Marvell WLAN rate (%i)\n", rate);
+       lbs_pr_alert("Invalid Marvell WLAN rate %i\n", rate);
        return 0;
 }
 
@@ -322,13 +320,14 @@ 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 wlan_private
+ *  @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(wlan_private * priv, struct sk_buff *skb)
+static int process_rxed_802_11_packet(struct lbs_private *priv,
+       struct sk_buff *skb)
 {
-       wlan_adapter *adapter = priv->adapter;
+       struct lbs_adapter *adapter = priv->adapter;
        int ret = 0;
 
        struct rx80211packethdr *p_rx_pkt;
@@ -336,15 +335,15 @@ static int process_rxed_802_11_packet(wlan_private * priv, struct sk_buff *skb)
        struct rx_radiotap_hdr radiotap_hdr;
        struct rx_radiotap_hdr *pradiotap_hdr;
 
-       ENTER();
+       lbs_deb_enter(LBS_DEB_RX);
 
        p_rx_pkt = (struct rx80211packethdr *) skb->data;
        prxpd = &p_rx_pkt->rx_pd;
 
-       // lbs_dbg_hex("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_pr_debug(1, "RX error: FRAME RECEIVED WITH BAD LENGTH\n");
+               lbs_deb_rx("rx err: frame received wit bad length\n");
                priv->stats.rx_length_errors++;
                ret = 0;
                goto done;
@@ -353,29 +352,28 @@ static int process_rxed_802_11_packet(wlan_private * priv, struct sk_buff *skb)
        /*
         * Check rxpd status and update 802.3 stat,
         */
-       if (!(prxpd->status & MRVDRV_RXPD_STATUS_OK)) {
-               //lbs_pr_debug(1, "RX error: frame received with bad status\n");
+       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_pr_debug(1, "RX Data: skb->len - sizeof(RxPd) = %d - %zd = %zd\n",
+       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 */
-       switch (priv->adapter->radiomode) {
-       case WLAN_RADIOMODE_NONE:
+       if (priv->adapter->monitormode == LBS_MONITOR_OFF) {
                /* no radio header */
                /* chop the rxpd */
                skb_pull(skb, sizeof(struct rxpd));
-               break;
+       }
 
-       case WLAN_RADIOMODE_RADIOTAP:
+       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 = sizeof(struct rx_radiotap_hdr);
-               radiotap_hdr.hdr.it_present = RX_RADIOTAP_PRESENT;
+               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;
@@ -386,12 +384,10 @@ static int process_rxed_802_11_packet(wlan_private * priv, struct sk_buff *skb)
                /* XXX must check no carryout */
                radiotap_hdr.antsignal = prxpd->snr + prxpd->nf;
                radiotap_hdr.rx_flags = 0;
-               if (!(prxpd->status & MRVDRV_RXPD_STATUS_OK))
+               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);
 
-               // lbs_dbg_hex1("RX radiomode packet BEF: ", skb->data, min(skb->len, 100));
-
                /* chop the rxpd */
                skb_pull(skb, sizeof(struct rxpd));
 
@@ -399,7 +395,7 @@ static int process_rxed_802_11_packet(wlan_private * priv, struct sk_buff *skb)
                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",
+                       lbs_pr_alert("%s: couldn't pskb_expand_head\n",
                               __func__);
                }
 
@@ -409,37 +405,25 @@ static int process_rxed_802_11_packet(wlan_private * priv, struct sk_buff *skb)
                                                            rx_radiotap_hdr));
                memcpy(pradiotap_hdr, &radiotap_hdr,
                       sizeof(struct rx_radiotap_hdr));
-               //lbs_dbg_hex1("RX radiomode packet AFT: ", skb->data, min(skb->len, 100));
-               break;
-
-       default:
-               /* unknown header */
-               lbs_pr_alert( "Unknown radiomode (%i)\n",
-                      priv->adapter->radiomode);
-               /* don't export any header */
-               /* chop the rxpd */
-               skb_pull(skb, sizeof(struct rxpd));
-               break;
        }
 
        /* Take the data rate from the rxpd structure
         * only if the rate is auto
         */
-       if (adapter->is_datarate_auto) {
-               adapter->datarate = libertas_index_to_data_rate(prxpd->rx_rate);
-       }
+       if (adapter->auto_rate)
+               adapter->cur_rate = lbs_fw_index_to_data_rate(prxpd->rx_rate);
 
-       wlan_compute_rssi(priv, prxpd);
+       lbs_compute_rssi(priv, prxpd);
 
-       lbs_pr_debug(1, "RX Data: size of actual packet = %d\n", skb->len);
+       lbs_deb_rx("rx data: size of actual packet %d\n", skb->len);
        priv->stats.rx_bytes += skb->len;
        priv->stats.rx_packets++;
 
-       libertas_upload_rx_packet(priv, skb);
+       lbs_upload_rx_packet(priv, skb);
 
        ret = 0;
-done:
-       LEAVE();
 
-       return (ret);
+done:
+       lbs_deb_leave_args(LBS_DEB_RX, "ret %d", ret);
+       return ret;
 }