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iwlwifi: advertise maximal MPDU length when Rx MQ is supported

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The new hardware that supports multiple queue also
de-aggregates A-MSDUs. This means that we can advertise
the maximal size of A-MSDUs regardless of the receive
buffer's size.
In order to be able to forcefully use a lower A-MSDU size,
add a default value for the module parameter. Pre-9000
will have a default of 4K, and 9000 will have 12K.
Setting the amsdu_size module parameter to 4K will limit
the A-MSDU on 9000 as well.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Emmanuel Grumbach
2016-04-07 16:44:42 +03:00
committed by Luca Coelho
parent af5e964f30
commit 4bdd4dfe7a
6 changed files with 23 additions and 6 deletions
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4
drivers/net/wireless/intel/iwlwifi/iwl-eeprom-parse.c
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@@ -766,7 +766,9 @@ void iwl_init_ht_hw_capab(const struct iwl_cfg *cfg,
if (cfg->ht_params->ldpc)
ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
if (iwlwifi_mod_params.amsdu_size >= IWL_AMSDU_8K)
if ((cfg->mq_rx_supported &&
iwlwifi_mod_params.amsdu_size != IWL_AMSDU_4K) ||
iwlwifi_mod_params.amsdu_size >= IWL_AMSDU_8K)
ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
ht_info->ampdu_factor = cfg->max_ht_ampdu_exponent;