kern/48950: Some ethernet intetfaces can't change flow control setting.

[msaitoh%five.execsw.org@localhost]

>Number:         48950
>Category:       kern
>Synopsis:       Some ethernet intetfaces can't change flow control setting.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jun 25 16:30:00 +0000 2014
>Originator:     SAITOH Masanobu
>Release:        all
>Organization:
>Environment:
Architecture: all
Machine: all
>Description:
        Some ethernet interfaces can't change the setting of flow control.

        e.g. bnx:

                # ifconfig bnx0 mediaopt flow
                ifconfig: SIOCSIFMEDIA: Invalid argument

>How-To-Repeat:
        See above.
>Fix:
        The reason is that the MIIF_DOPAUSE mask isn't passed to
        mii_attach(). Set MIIF_DOPAUSE mask in drivers which support
        the flow control.