mac80211: inform driver of basic rateset
Drivers need to know the basic rateset to be able to configure the ACK/CTS programming in hardware correctly. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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ccd7b36286
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@ -160,6 +160,7 @@ struct ieee80211_low_level_stats {
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* @BSS_CHANGED_ERP_PREAMBLE: preamble changed
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* @BSS_CHANGED_ERP_SLOT: slot timing changed
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* @BSS_CHANGED_HT: 802.11n parameters changed
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* @BSS_CHANGED_BASIC_RATES: Basic rateset changed
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*/
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enum ieee80211_bss_change {
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BSS_CHANGED_ASSOC = 1<<0,
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@ -167,6 +168,7 @@ enum ieee80211_bss_change {
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BSS_CHANGED_ERP_PREAMBLE = 1<<2,
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BSS_CHANGED_ERP_SLOT = 1<<3,
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BSS_CHANGED_HT = 1<<4,
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BSS_CHANGED_BASIC_RATES = 1<<5,
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};
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/**
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@ -187,6 +189,9 @@ enum ieee80211_bss_change {
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* @assoc_ht: association in HT mode
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* @ht_conf: ht capabilities
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* @ht_bss_conf: ht extended capabilities
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* @basic_rates: bitmap of basic rates, each bit stands for an
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* index into the rate table configured by the driver in
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* the current band.
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*/
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struct ieee80211_bss_conf {
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/* association related data */
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@ -200,6 +205,7 @@ struct ieee80211_bss_conf {
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u16 beacon_int;
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u16 assoc_capability;
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u64 timestamp;
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u64 basic_rates;
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/* ht related data */
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bool assoc_ht;
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struct ieee80211_ht_info *ht_conf;
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@ -433,11 +433,6 @@ struct ieee80211_sub_if_data {
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int drop_unencrypted;
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/*
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* basic rates of this AP or the AP we're associated to
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*/
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u64 basic_rates;
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/* Fragment table for host-based reassembly */
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struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
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unsigned int fragment_next;
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@ -1017,6 +1012,8 @@ void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
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void ieee802_11_parse_elems(u8 *start, size_t len,
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struct ieee802_11_elems *elems);
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int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
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u64 ieee80211_mandatory_rates(struct ieee80211_local *local,
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enum ieee80211_band band);
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#ifdef CONFIG_MAC80211_NOINLINE
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#define debug_noinline noinline
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@ -144,7 +144,9 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
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ieee80211_setup_sdata(sdata, type);
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/* reset some values that shouldn't be kept across type changes */
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sdata->basic_rates = 0;
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sdata->bss_conf.basic_rates =
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ieee80211_mandatory_rates(sdata->local,
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sdata->local->hw.conf.channel->band);
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sdata->drop_unencrypted = 0;
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return 0;
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@ -710,6 +710,12 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
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ieee80211_led_assoc(local, 1);
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sdata->bss_conf.assoc = 1;
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/*
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* For now just always ask the driver to update the basic rateset
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* when we have associated, we aren't checking whether it actually
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* changed or not.
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*/
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changed |= BSS_CHANGED_BASIC_RATES;
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ieee80211_bss_info_change_notify(sdata, changed);
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netif_tx_start_all_queues(sdata->dev);
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@ -1296,7 +1302,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
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}
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sta->supp_rates[local->hw.conf.channel->band] = rates;
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sdata->basic_rates = basic_rates;
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sdata->bss_conf.basic_rates = basic_rates;
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/* cf. IEEE 802.11 9.2.12 */
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if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
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@ -1453,34 +1459,6 @@ static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
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return res;
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}
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static u64 ieee80211_sta_get_mandatory_rates(struct ieee80211_local *local,
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enum ieee80211_band band)
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{
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struct ieee80211_supported_band *sband;
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struct ieee80211_rate *bitrates;
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u64 mandatory_rates;
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enum ieee80211_rate_flags mandatory_flag;
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int i;
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sband = local->hw.wiphy->bands[band];
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if (!sband) {
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WARN_ON(1);
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sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
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}
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if (band == IEEE80211_BAND_2GHZ)
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mandatory_flag = IEEE80211_RATE_MANDATORY_B;
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else
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mandatory_flag = IEEE80211_RATE_MANDATORY_A;
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bitrates = sband->bitrates;
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mandatory_rates = 0;
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for (i = 0; i < sband->n_bitrates; i++)
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if (bitrates[i].flags & mandatory_flag)
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mandatory_rates |= BIT(i);
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return mandatory_rates;
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}
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static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_mgmt *mgmt,
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size_t len,
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@ -1522,7 +1500,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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prev_rates = sta->supp_rates[band];
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/* make sure mandatory rates are always added */
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sta->supp_rates[band] = supp_rates |
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ieee80211_sta_get_mandatory_rates(local, band);
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ieee80211_mandatory_rates(local, band);
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#ifdef CONFIG_MAC80211_IBSS_DEBUG
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if (sta->supp_rates[band] != prev_rates)
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@ -2361,7 +2339,7 @@ struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
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/* make sure mandatory rates are always added */
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sta->supp_rates[band] = supp_rates |
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ieee80211_sta_get_mandatory_rates(local, band);
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ieee80211_mandatory_rates(local, band);
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rate_control_rate_init(sta, local);
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@ -153,7 +153,7 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx, int group_addr,
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if (r->bitrate > txrate->bitrate)
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break;
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if (tx->sdata->basic_rates & BIT(i))
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if (tx->sdata->bss_conf.basic_rates & BIT(i))
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rate = r->bitrate;
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switch (sband->band) {
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@ -594,7 +594,7 @@ ieee80211_tx_h_misc(struct ieee80211_tx_data *tx)
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for (idx = 0; idx < sband->n_bitrates; idx++) {
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if (sband->bitrates[idx].bitrate > rate->bitrate)
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continue;
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if (tx->sdata->basic_rates & BIT(idx) &&
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if (tx->sdata->bss_conf.basic_rates & BIT(idx) &&
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(baserate < 0 ||
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(sband->bitrates[baserate].bitrate
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< sband->bitrates[idx].bitrate)))
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@ -640,3 +640,31 @@ int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freqMHz)
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return ret;
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}
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u64 ieee80211_mandatory_rates(struct ieee80211_local *local,
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enum ieee80211_band band)
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{
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struct ieee80211_supported_band *sband;
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struct ieee80211_rate *bitrates;
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u64 mandatory_rates;
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enum ieee80211_rate_flags mandatory_flag;
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int i;
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sband = local->hw.wiphy->bands[band];
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if (!sband) {
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WARN_ON(1);
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sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
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}
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if (band == IEEE80211_BAND_2GHZ)
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mandatory_flag = IEEE80211_RATE_MANDATORY_B;
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else
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mandatory_flag = IEEE80211_RATE_MANDATORY_A;
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bitrates = sband->bitrates;
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mandatory_rates = 0;
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for (i = 0; i < sband->n_bitrates; i++)
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if (bitrates[i].flags & mandatory_flag)
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mandatory_rates |= BIT(i);
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return mandatory_rates;
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}
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