p54: Support boottime in scan results

This patch fixes an issue with wpa_supplicant dropping all scan
results because their where considered to be "too old" (e.g.:
"skip - scan result not recent enough (121056.086325 seconds too old)")
which is very weird because this looks like that the scan results have
been received before a scan started. This is due to the inaccuracy of
the default timing mechanism for calculating the BSS entry age.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/intersil/p54/txrx.c b/drivers/net/wireless/intersil/p54/txrx.c
index 5bf1c19eccedc79c94726a36db68be3928dd9b6b..f80c5056ccb7bdaef75ef6a2453bd0972a374917 100644 (file)
--- a/drivers/net/wireless/intersil/p54/txrx.c
+++ b/drivers/net/wireless/intersil/p54/txrx.c
@@ -334,6 +334,7 @@ static int p54_rx_data(struct p54_common *priv, struct sk_buff *skb)
        u16 freq = le16_to_cpu(hdr->freq);
        size_t header_len = sizeof(*hdr);
        u32 tsf32;
+       __le16 fc;
        u8 rate = hdr->rate & 0xf;
 
        /*
@@ -382,6 +383,11 @@ static int p54_rx_data(struct p54_common *priv, struct sk_buff *skb)
 
        skb_pull(skb, header_len);
        skb_trim(skb, le16_to_cpu(hdr->len));
+
+       fc = ((struct ieee80211_hdr *)skb->data)->frame_control;
+       if (ieee80211_is_probe_resp(fc) || ieee80211_is_beacon(fc))
+               rx_status->boottime_ns = ktime_get_boot_ns();
+
        if (unlikely(priv->hw->conf.flags & IEEE80211_CONF_PS))
                p54_pspoll_workaround(priv, skb);