On Wed, 2008-06-25 at 15:17 +0300, Tomas Winkler wrote:
> From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
>
> This patch adds the interval between the scan results and the last time a
> beacon was received in the result of the scan.
>
> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
> Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
> ---
> net/mac80211/mlme.c | 14 ++++++++++++++
> 1 files changed, 14 insertions(+), 0 deletions(-)
>
> diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
> index 7b930d1..e76e62a 100644
> --- a/net/mac80211/mlme.c
> +++ b/net/mac80211/mlme.c
> @@ -4658,12 +4658,26 @@ ieee80211_sta_scan_result(struct net_device *dev,
> char *buf;
> buf = kmalloc(30, GFP_ATOMIC);
> if (buf) {
> + unsigned long mid_range = (-1) / 2 + 1;
What is that? I guess that's where Riemann's zeta function has its
non-trivial roots :-)
> + time_diff = jiffies - bss->last_update > mid_range ?
> + jiffies - bss->last_update :
> + bss->last_update - jiffies;
That's pretty hairy. Do we really lack a function to calculate time
difference?
> + sprintf(buf, "Last beacon:%dms ago",
> + jiffies_to_msecs(time_diff));
You lost space after the colon for some reason.
--
Regards,
Pavel Roskin
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