Bogdan Costescu wrote:
> No way! If I implement a HA application which depends on link status, I
> want the info to be accurate, I don't want to know that 30 seconds ago I
> had good link.
To tangent a little bit, and add netdev to the CC...
The loss and regain of link status should be proactively signalled to
userspace using netlink or something similar. Currently we have
netif_carrier_{on,off,ok} but it is only passively checked.
netif_carrier_{on,off} should probably schedule_task() to fire off a
netlink message...
For your HA application specifically, right now, I would suggest making
sure your net driver calls netif_carrier_xxx correctly, then checking
for IFF_RUNNING interface flag. IFF_RUNNING will disappear if the
interface is up, but there is no carrier [as according to
netif_carrier_ok].
--
Jeff Garzik | Disbelief, that's why you fail.
Building 1024 |
MandrakeSoft |
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