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by stingraycharles
1759 days ago
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> Having a user space TCP stack could also decrease the need for [root privileges] as far as setting up the network is concerned. I think it’s important to distinguish between the protocol (TCP) and the hardware device. You would still absolutely need to talk to the device, it’s just that moving a lot of the logic to user space means much less context switching for system calls for the application. I can imagine on Linux you can talk directly to /dev/eth0 if you would want to (in the same way that you can talk to /dev/sda), and then you would be back at square one regarding root privileges. |
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It's a AF_PACKET, SOCK_RAW socket rather than a device file, but yes.