NetStack | Lightweight toolset for creating concurrent networking | Game Engine library
kandi X-RAY | NetStack Summary
kandi X-RAY | NetStack Summary
Lightweight toolset for creating concurrent networking systems for multiplayer games. NetStack is self-contained and has no dependencies.
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QUESTION
When trying to find the correct peer network interface of a veth
pair that lives in a different namespace, that end is not only indicated by its iflink
property, but also by a link-netnsid
. This link-netnsid
is a network namespace ID which is only meaningful within the current network namespace.
The Linux kernel doesn't offer to map a netnsid to a network namespace inode number, which is the only unique identification. However, Linux offers the RTM_GETNSID
request that maps a network namespace identified either by fd (NETNSA_FD
) or by PID (NETNSA_PID
) to the local netnsid.
How do I make such a RTM_GETNSID
request in Python, preferably using the pyroute2
library? So far, I could not successfully request the netnsid for the namespace identified by PID, but only get back an invalid argument error 22, using the following script:
ANSWER
Answered 2018-May-07 at 18:01It turns out that my code actually is correct, but there's a bug in pyroute2
causing the RTNETLINK message to be a few octets too short (visible in strace
). As a temporary hack around this library bug it is sufficient to set two attributes, so that the kernel accepts the RTNETLINK packet and works on it, even if it isn't fully correct.
QUESTION
In a conversion project, I have modified and remodified an existing makefile chain but managed to break it. The makefiles need to follow a different chain for when I'm compiling for an AVR project without Contiki and one with (and some extensions on top). The one without works, the one with does not anymore, since it also needs to take into account the makefiles of Contiki. I'll try to be complete but leave out unneccessary details.
Using the terminal from /CerberOS/uJ/Build/, I execute the following command:
...ANSWER
Answered 2017-Jun-14 at 11:59From looking at your makefile:
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