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Note that the HT MCS index macros can't return all possible MCS values. 

I don't know whether this is a bug in the software or a lack of support
in the hardware.

This at least notes the issue in CID 1405905.

Change-Id: I481454bc38842a0f877cb8b52b73e1156fd362b5
Reviewed-on: https://code.wireshark.org/review/21558
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This commit is contained in:
Guy Harris 2017-05-07 19:39:19 -07:00
parent 548e9762fb
commit ee37135c67
1 changed files with 11 additions and 1 deletions
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12
wiretap/vwr.c
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@ -525,8 +525,13 @@
/*
* HT - contains MCS index.
*
* XXX - MCS indices for HT go up to 76, which doesn't fit in 6 bits;
* either the mask is wrong, or the hardware can't receive packets
* with an MCS of 64 through 76, or the hardware can but misreports
* the MCS.
*/
#define vVW510021_W_S2_MCS_INDEX_HT(l1p_1) ((l1p_1) & 0x3f) /* MCS index for HT */
#define vVW510021_W_S2_MCS_INDEX_HT(l1p_1) ((l1p_1) & 0x3f)
/*
* VHT - contains MCS index and number of spatial streams.
@ -545,6 +550,11 @@
/*
* HT - contains MCS index.
*
* XXX - MCS indices for HT go up to 76, which doesn't fit in 6 bits;
* either the mask is wrong, or the hardware can't receive packets
* with an MCS of 64 through 76, or the hardware can but misreports
* the MCS.
*/
#define vVW510021_W_S3_MCS_INDEX_HT(l1p_1) ((l1p_1) & 0x3f)