James Carlson <carlsonj@xxxxxxxxxxxxxxx> wrote on 04/02/2009 18:14:44: > Sorry for the late reply, I got busy and forgot .. > Joakim Tjernlund writes: > > I wonder how IFF_RUNNING is managed in recent pppd version(s). I very much > > like to > > use IFF_RUNNING to see if the link working in both ends. > > For most implementations, IFF_RUNNING cannot be controlled by anything > in user space (such as pppd). Instead, it's set/cleared by the > kernel's PPP driver. I haven't looked into how ppp is impl. in user/kernel space but I suspect that user space would have to help/inform the kernel ppp driver about RUNNING status. > > Defining "working" is difficult. Usually, the IFF_RUNNING flag is set > if the link is either a demand link waiting for activity or if there's > an active serial link underneath the connection, and IFF_UP is set > when IPCP successfully negotiates addresses. Perhaps, but one could flip RUNNING if echo replies stops or if someone pulls the cable. That would be a start Jocke -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
