Hi guys,
Currently, I am working on implementation of Windows Driver in Kernel Mode using WDF frameworkhttps: (more specifically - KMDF). One of the functionalities driver has to support is sending and receiving TCP packets with some custom payload. I found out that it is possible to do networking from Windows Kernel using Windows Kernel Socketshttps: What I need is not only simple TCP packet exchanging between driver and remote host, but also having control over the QoS. Preferred way to control QoS is by manipulating DSCP IP header fieldhttps:. One way to do this in windows driver using Windows Kernel Sockets is to create raw socket and then manually create, not only payload data I want to send to remote host, but also IP header. According to official Microsoft documentations, this approach has its limitations:
1) TCP packets couldn’t be sent with raw windows sockets, only datagrams (is this true?!)
2) Application that uses raw sockets has to be run with administrator privileges.
In user-application, it is easy to set DSCP IP header field using qWAVE componenthttps:. But qWAVE is not available in kernel-space.
How can we set DSCP field from windows kernel driver when driver sends tcp packets using WSK?
Kind regards,
Nikola Simic
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