MFC 296083,296084,296085,296086,296087,296088,296089

MFC 296083,296084,296085,296086,296087,296088,296089

296083
    hyperv: Remove useless channel inbound_lock

    It serves no purpose.

    Reviewed by:        Hongjiang Zhang <honzhan microsoft com>
    MFC after:  1 week
    Sponsored by:       Microsoft OSTC
    Differential Revision:      https://reviews.freebsd.org/D5450

296084
    hyperv: Always set device for channels

    And unregister hv_device only for primary channels, who own the hv_device.

    MFC after:  1 week
    Sponsored by:       Microsoft OSTC
    Differential Revision:      https://reviews.freebsd.org/D5451

296085
    hyperv/hn: Pass channel as the channel callback argument

    This is the preamble to pass channel back to hn(4) upon TX/RX done.

    Reviewed by:        Hongjiang Zhang <honzhan microsoft com>
    MFC after:  1 week
    Sponsored by:       Microsoft OSTC
    Differential Revision:      https://reviews.freebsd.org/D5452

296086
    hyperv/hn: Pass channel to TX/RX done

    This is preamble to associate the TX/RX rings to their channel.

    While I'm here, revoke unused netvsc_recv_rollup.

    MFC after:  1 week
    Sponsored by:       Microsoft OSTC
    Differential Revision:      https://reviews.freebsd.org/D5453

296087
    hyperv/hn: Associate TX/RX ring with channel

    This fixes the TX/RX ring selection for TX/RX done.

    MFC after:  1 week
    Sponsored by:       Microsoft OSTC
    Differential Revision:      https://reviews.freebsd.org/D5454

296088
    hyperv/hn: Remove the useless num_outstanding_sends

    We rely on taskqueue draining now.

    MFC after:  1 week
    Sponsored by:       Microsoft OSTC
    Differential Revision:      https://reviews.freebsd.org/D5456

296089
    hyperv/hn: Make transmission path channel aware

    Chimney sending buffer still needs conversion, which will be done
    along with the upcoming vRSS support.

    MFC after:  1 week
    Sponsored by:       Microsoft OSTC
    Differential Revision:      https://reviews.freebsd.org/D5457

git-svn-id: svn://svn.freebsd.org/base/stable/10@301912 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f