diff options
author | Martin Hundebøll <martin@hundeboll.net> | 2011-12-08 13:32:41 +0100 |
---|---|---|
committer | Marek Lindner <lindner_marek@yahoo.de> | 2012-02-17 02:50:19 +0800 |
commit | a04ccd5970ec11f0b320971051435d86d3233c92 (patch) | |
tree | a57eaf54189eea3f63a30ee89a9be4e19513342e /net/batman-adv/main.h | |
parent | c51f9c09fabc96f23e449b5e39b1fc4e2cabcd85 (diff) | |
download | linux-3.10-a04ccd5970ec11f0b320971051435d86d3233c92.tar.gz linux-3.10-a04ccd5970ec11f0b320971051435d86d3233c92.tar.bz2 linux-3.10-a04ccd5970ec11f0b320971051435d86d3233c92.zip |
batman-adv: Move is_out_of_time() to main.h for general use
Both translation tables and network coding use timeouts to do house
keeping, so we might as well share the function used to compare a
timestamp+timeout with current time.
For readability and simplicity, the function is renamed to
has_timed_out() and uses time_is_before_jiffies() instead of
time_after().
Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Diffstat (limited to 'net/batman-adv/main.h')
-rw-r--r-- | net/batman-adv/main.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index 86354e06eb4..f9c659b3f3a 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -202,6 +202,17 @@ static inline int compare_eth(const void *data1, const void *data2) return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); } +/** + * has_timed_out - compares current time (jiffies) and timestamp + timeout + * @timestamp: base value to compare with (in jiffies) + * @timeout: added to base value before comparing (in milliseconds) + * + * Returns true if current time is after timestamp + timeout + */ +static inline bool has_timed_out(unsigned long timestamp, unsigned int timeout) +{ + return time_is_before_jiffies(timestamp + msecs_to_jiffies(timeout)); +} #define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0) |