hyperv: netvsc: VRSS step1: multiple channel support

[honzhan_microsoft.com]

Summary

Implement multiple channel for netvsc.

[honzhan_microsoft.com]

This is the first step for VRSS: multiple channel support. It passes build & simple test, and need more test.

[sepherosa_gmail.com]

hv_nv_on_receive_completion() bits will be committed shortly.

[sepherosa_gmail.com]

callback_buf bits will be committed shortly.

[sepherosa_gmail.com]

I have to change the hyperv/hn to redo the # of channel configuration bits. That should only have small impact on this patch.

[sepherosa_gmail.com]

hyperv/hn # of ring configuration is committed. I am moving on merging this patch.

[howard0su_gmail.com]

sys/dev/hyperv/include/hyperv.h

125

doesn't sound right. if this is generic for all driver, why not just rename priv1/2 to the rxr/txr? if it is not generic, why you put into hyperv.h?

sys/dev/hyperv/vmbus/hv_channel_mgmt.c

145

seems this buf is not used by vmbus driver. why not push it down to netvsc?

[sepherosa_gmail.com]

Generally speaking, only the RNDIS, and NetVSP bits protocol bits were taken from this submission, that's also why I didn't mention this review in the commit message to avoid confusion.

If you want to take a look at vRSS, just checkout the latest code.

sys/dev/hyperv/include/hyperv.h

125

This part is deleted in the committed code.

sys/dev/hyperv/vmbus/hv_channel_mgmt.c

145

This one is also deleted in the committed code.

[sepherosa_gmail.com]

It had been committed for quite some time.