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2016-07-10timers: apply slack to hotpath timersJason A. Donenfeld
For timers in the hotpath, we don't want them to be rescheduled so aggressively, and since they don't need to be that precise, we can set a decent amount of slack. With the persistent keepalive timer, we have something of a special case. Since the timeout isn't fixed like the others, we don't want to make it more often than the kernel ordinarily would. So, instead, we make it a minimum. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2016-07-10timers: document conditions for callingJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2016-07-10persistent keepalive: use unsigned long to avoid multiplication in hotpathJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2016-07-10persistent keepalive: use authenticated keepalivesJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2016-07-08timers: rename *authorized* functions to *authenticated*Jason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2016-07-08persistent keepalive: add kernel mechanismJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2016-06-25Initial commitJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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