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.
