iwlwifi: Add TX/RX statistcs to driver

This patch supports collecting of TX and RX statistics in the driver.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 7b0ad728f927..b2ea4d4f3f31 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -3337,6 +3337,14 @@ static void iwl4965_add_radiotap(struct iwl_priv *priv,
         stats->flag |= RX_FLAG_RADIOTAP;
 }
 
+static void iwl_update_rx_stats(struct iwl_priv *priv, u16 fc, u16 len)
+{
+        /* 0 - mgmt, 1 - cnt, 2 - data */
+        int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
+        priv->rx_stats[idx].cnt++;
+        priv->rx_stats[idx].bytes += len;
+}
+
 static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data,
                                        int include_phy,
                                        struct iwl4965_rx_mem_buffer *rxb,
@@ -3406,6 +3414,7 @@ static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data,
         if (priv->add_radiotap)
                 iwl4965_add_radiotap(priv, rxb->skb, rx_start, stats, ampdu_status);
 
+        iwl_update_rx_stats(priv, le16_to_cpu(hdr->frame_control), len);
         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
         priv->alloc_rxb_skb--;
         rxb->skb = NULL;