A-MPDU Size Limit

[Sampath]

Hi Everyone,

I am trying to increase A-MSDU and A-MPDU sizes beyond the set values.

For example:

BE_MaxAmpduSize

• Underlying type: uint32_t 0:65535
• Initial value: 65535

Can I increase this beyond 65.5 kB?

I tried to edit the regular-wifi-mac.cc

.AddAttribute ("BE_MaxAmpduSize",

                   "Maximum length in bytes of an A-MPDU for AC_BE access class."

                   "Value 0 means A-MPDU is disabled for that AC.",

                   UintegerValue (65535),

                   MakeUintegerAccessor (&RegularWifiMac::SetBeMaxAmpduSize),

                   MakeUintegerChecker<uint32_t> (0, 131071)) //instead of 65565

Will this make any undesirable outcomes?

Thanks in advance!

Sampath

[Konstantinos]

Hi,

Yes, it potentially will cause errors for overflows or undesirable results. 

You need to check where this variable is used and what other checks, e.g if it is used with 16-bit variables.

Regards

K

[Sampath]

Hi Konstantinos,

The variable is uint32_t type. However it does not have an effect. I will go deeper into the implementation. 

Thank you!

Regards,

Sampath