* [RFC 0/2] advertise aggregate size limit @ 2011-01-12 12:31 Johannes Berg 2011-01-12 12:31 ` [RFC 1/2] mac80211: allow advertising correct maximum aggregate size Johannes Berg 2011-01-12 12:31 ` [RFC 2/2] iwlwifi: advertise max " Johannes Berg 0 siblings, 2 replies; 3+ messages in thread From: Johannes Berg @ 2011-01-12 12:31 UTC (permalink / raw) To: linux-wireless This can help optimise peers reorder buffer sizes. johannes ^ permalink raw reply [flat|nested] 3+ messages in thread
* [RFC 1/2] mac80211: allow advertising correct maximum aggregate size 2011-01-12 12:31 [RFC 0/2] advertise aggregate size limit Johannes Berg @ 2011-01-12 12:31 ` Johannes Berg 2011-01-12 12:31 ` [RFC 2/2] iwlwifi: advertise max " Johannes Berg 1 sibling, 0 replies; 3+ messages in thread From: Johannes Berg @ 2011-01-12 12:31 UTC (permalink / raw) To: linux-wireless From: Johannes Berg <johannes.berg@intel.com> Currently, mac80211 always advertises that it may send up to 64 subframes in an aggregate. This is fine, since it's the max, but might as well be set to zero instead since it doesn't have any information. However, drivers might have that information, so allow them to set a variable giving it, which will then be used. The default of zero will be fine since to the peer that means we don't know and it will just use its own limit for the buffer size. Signed-off-by: Johannes Berg <johannes.berg@intel.com> --- include/net/mac80211.h | 5 +++++ net/mac80211/agg-tx.c | 3 ++- 2 files changed, 7 insertions(+), 1 deletion(-) --- wireless-testing.orig/include/net/mac80211.h 2011-01-12 13:25:40.000000000 +0100 +++ wireless-testing/include/net/mac80211.h 2011-01-12 13:26:56.000000000 +0100 @@ -1147,6 +1147,10 @@ enum ieee80211_hw_flags { * @napi_weight: weight used for NAPI polling. You must specify an * appropriate value here if a napi_poll operation is provided * by your driver. + * + * @max_tx_aggregation_subframes: maximum number of subframes in an + * aggregate an HT driver will transmit, used by the peer as a + * hint to size its reorder buffer. */ struct ieee80211_hw { struct ieee80211_conf conf; @@ -1165,6 +1169,7 @@ struct ieee80211_hw { u8 max_rates; u8 max_report_rates; u8 max_rate_tries; + u8 max_tx_aggregation_subframes; }; /** --- wireless-testing.orig/net/mac80211/agg-tx.c 2011-01-12 13:27:01.000000000 +0100 +++ wireless-testing/net/mac80211/agg-tx.c 2011-01-12 13:27:20.000000000 +0100 @@ -342,7 +342,8 @@ void ieee80211_tx_ba_session_handle_star /* send AddBA request */ ieee80211_send_addba_request(sdata, sta->sta.addr, tid, tid_tx->dialog_token, start_seq_num, - 0x40, tid_tx->timeout); + local->hw.max_tx_aggregation_subframes, + tid_tx->timeout); } int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid, ^ permalink raw reply [flat|nested] 3+ messages in thread
* [RFC 2/2] iwlwifi: advertise max aggregate size 2011-01-12 12:31 [RFC 0/2] advertise aggregate size limit Johannes Berg 2011-01-12 12:31 ` [RFC 1/2] mac80211: allow advertising correct maximum aggregate size Johannes Berg @ 2011-01-12 12:31 ` Johannes Berg 1 sibling, 0 replies; 3+ messages in thread From: Johannes Berg @ 2011-01-12 12:31 UTC (permalink / raw) To: linux-wireless From: Johannes Berg <johannes.berg@intel.com> Allow peers to size their reorder buffer more accurately by advertising that we'll never send aggregates longer than the default (31). Signed-off-by: Johannes Berg <johannes.berg@intel.com> --- drivers/net/wireless/iwlwifi/iwl-agn.c | 2 ++ 1 file changed, 2 insertions(+) --- wireless-testing.orig/drivers/net/wireless/iwlwifi/iwl-agn.c 2011-01-12 13:28:18.000000000 +0100 +++ wireless-testing/drivers/net/wireless/iwlwifi/iwl-agn.c 2011-01-12 13:28:41.000000000 +0100 @@ -3191,6 +3191,8 @@ static int iwl_mac_setup_register(struct IEEE80211_HW_SPECTRUM_MGMT | IEEE80211_HW_REPORTS_TX_ACK_STATUS; + hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF; + if (!priv->cfg->base_params->broken_powersave) hw->flags |= IEEE80211_HW_SUPPORTS_PS | IEEE80211_HW_SUPPORTS_DYNAMIC_PS; ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-01-12 12:31 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-01-12 12:31 [RFC 0/2] advertise aggregate size limit Johannes Berg 2011-01-12 12:31 ` [RFC 1/2] mac80211: allow advertising correct maximum aggregate size Johannes Berg 2011-01-12 12:31 ` [RFC 2/2] iwlwifi: advertise max " Johannes Berg
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