summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/iwlwifi/iwl-rx.c
diff options
context:
space:
mode:
authorDavid Woodhouse <David.Woodhouse@intel.com>2010-02-26 19:04:15 +0000
committerDavid Woodhouse <David.Woodhouse@intel.com>2010-02-26 19:06:24 +0000
commita7790532f5b7358c33a6b1834dc2b318de209f31 (patch)
tree0ceb9e24b3f54cb5c8453fb5a218e2a94a0f1cce /drivers/net/wireless/iwlwifi/iwl-rx.c
parent2764fb4244cc1bc08df3667924ca4a972e90ac70 (diff)
parent60b341b778cc2929df16c0a504c91621b3c6a4ad (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
The SmartMedia FTL code depends on new kfifo bits from 2.6.33
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-rx.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-rx.c61
1 files changed, 8 insertions, 53 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index 6090bc15a6d..2dbce85404a 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -345,10 +345,8 @@ void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
PAGE_SIZE << priv->hw_params.rx_page_order,
PCI_DMA_FROMDEVICE);
- __free_pages(rxq->pool[i].page,
- priv->hw_params.rx_page_order);
+ __iwl_free_pages(priv, rxq->pool[i].page);
rxq->pool[i].page = NULL;
- priv->alloc_rxb_page--;
}
}
@@ -416,9 +414,7 @@ void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
PAGE_SIZE << priv->hw_params.rx_page_order,
PCI_DMA_FROMDEVICE);
- priv->alloc_rxb_page--;
- __free_pages(rxq->pool[i].page,
- priv->hw_params.rx_page_order);
+ __iwl_free_pages(priv, rxq->pool[i].page);
rxq->pool[i].page = NULL;
}
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
@@ -654,47 +650,6 @@ void iwl_reply_statistics(struct iwl_priv *priv,
}
EXPORT_SYMBOL(iwl_reply_statistics);
-#define PERFECT_RSSI (-20) /* dBm */
-#define WORST_RSSI (-95) /* dBm */
-#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
-
-/* Calculate an indication of rx signal quality (a percentage, not dBm!).
- * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
- * about formulas used below. */
-static int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm)
-{
- int sig_qual;
- int degradation = PERFECT_RSSI - rssi_dbm;
-
- /* If we get a noise measurement, use signal-to-noise ratio (SNR)
- * as indicator; formula is (signal dbm - noise dbm).
- * SNR at or above 40 is a great signal (100%).
- * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
- * Weakest usable signal is usually 10 - 15 dB SNR. */
- if (noise_dbm) {
- if (rssi_dbm - noise_dbm >= 40)
- return 100;
- else if (rssi_dbm < noise_dbm)
- return 0;
- sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
-
- /* Else use just the signal level.
- * This formula is a least squares fit of data points collected and
- * compared with a reference system that had a percentage (%) display
- * for signal quality. */
- } else
- sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
- (15 * RSSI_RANGE + 62 * degradation)) /
- (RSSI_RANGE * RSSI_RANGE);
-
- if (sig_qual > 100)
- sig_qual = 100;
- else if (sig_qual < 1)
- sig_qual = 0;
-
- return sig_qual;
-}
-
/* Calc max signal level (dBm) among 3 possible receivers */
static inline int iwl_calc_rssi(struct iwl_priv *priv,
struct iwl_rx_phy_res *rx_resp)
@@ -973,7 +928,10 @@ static void iwl_pass_packet_to_mac80211(struct iwl_priv *priv,
if (ieee80211_is_mgmt(fc) ||
ieee80211_has_protected(fc) ||
ieee80211_has_morefrags(fc) ||
- le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG)
+ le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG ||
+ (ieee80211_is_data_qos(fc) &&
+ *ieee80211_get_qos_ctl(hdr) &
+ IEEE80211_QOS_CONTROL_A_MSDU_PRESENT))
ret = skb_linearize(skb);
else
ret = __pskb_pull_tail(skb, min_t(u16, IWL_LINK_HDR_MAX, len)) ?
@@ -1105,11 +1063,8 @@ void iwl_rx_reply_rx(struct iwl_priv *priv,
if (iwl_is_associated(priv) &&
!test_bit(STATUS_SCANNING, &priv->status)) {
rx_status.noise = priv->last_rx_noise;
- rx_status.qual = iwl_calc_sig_qual(rx_status.signal,
- rx_status.noise);
} else {
rx_status.noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
- rx_status.qual = iwl_calc_sig_qual(rx_status.signal, 0);
}
/* Reset beacon noise level if not associated. */
@@ -1122,8 +1077,8 @@ void iwl_rx_reply_rx(struct iwl_priv *priv,
iwl_dbg_report_frame(priv, phy_res, len, header, 1);
#endif
iwl_dbg_log_rx_data_frame(priv, len, header);
- IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, noise %d, qual %d, TSF %llu\n",
- rx_status.signal, rx_status.noise, rx_status.qual,
+ IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, noise %d, TSF %llu\n",
+ rx_status.signal, rx_status.noise,
(unsigned long long)rx_status.mactime);
/*