CVS commit: src/sys/net

["SAITOH Masanobu" <msaitoh%netbsd.org@localhost>]

Module Name:    src
Committed By:   msaitoh
Date:           Mon Jun  5 08:50:07 UTC 2017

Modified Files:
        src/sys/net: if_media.h

Log Message:
No functional change:
- Relocate definitions in the following order to be easy to understand.
 0) IFM_*MASK
 1) macros to extract various bits of information from the media word.
 2) Media type.
 3) Shared media sub-type.
 4) Status bits.
 5) Shared (global) options
 6) Media dependent definitions.
 7) kernel function declarations.
 7) userland function declarations.
- Add comments.

This change makes me realize that:
 0) RFU bit have never used.
 1) bit 1..0 are shared between Shared media sub-type and Status bits.
    It's little dangerous.
 2) No. 5 of Media type is not used (hole).
 3) Only IEEE80211 uses IFM_MMASK(IFM_MODE()) bits.
 4) IFM_TOKEN's OMASK bits doesn't start from 0x00000100 but starts from
    0x00000200. Is this for BSD/OS compatibility?


To generate a diff of this commit:
cvs rdiff -u -r1.57 -r1.58 src/sys/net/if_media.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.