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-rw-r--r--net/mac80211/util.c218
1 files changed, 152 insertions, 66 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 2265445..e1b34a1 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -107,7 +107,8 @@ void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
}
int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
- int rate, int erp, int short_preamble)
+ int rate, int erp, int short_preamble,
+ int shift)
{
int dur;
@@ -118,6 +119,9 @@ int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
*
* rate is in 100 kbps, so divident is multiplied by 10 in the
* DIV_ROUND_UP() operations.
+ *
+ * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
+ * is assumed to be 0 otherwise.
*/
if (band == IEEE80211_BAND_5GHZ || erp) {
@@ -130,13 +134,23 @@ int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
* TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
*
* T_SYM = 4 usec
- * 802.11a - 17.5.2: aSIFSTime = 16 usec
+ * 802.11a - 18.5.2: aSIFSTime = 16 usec
* 802.11g - 19.8.4: aSIFSTime = 10 usec +
* signal ext = 6 usec
*/
dur = 16; /* SIFS + signal ext */
- dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */
- dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */
+ dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
+ dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
+
+ /* IEEE 802.11-2012 18.3.2.4: all values above are:
+ * * times 4 for 5 MHz
+ * * times 2 for 10 MHz
+ */
+ dur *= 1 << shift;
+
+ /* rates should already consider the channel bandwidth,
+ * don't apply divisor again.
+ */
dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
4 * rate); /* T_SYM x N_SYM */
} else {
@@ -168,7 +182,7 @@ __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
{
struct ieee80211_sub_if_data *sdata;
u16 dur;
- int erp;
+ int erp, shift = 0;
bool short_preamble = false;
erp = 0;
@@ -177,10 +191,11 @@ __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
short_preamble = sdata->vif.bss_conf.use_short_preamble;
if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
erp = rate->flags & IEEE80211_RATE_ERP_G;
+ shift = ieee80211_vif_get_shift(vif);
}
dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
- short_preamble);
+ short_preamble, shift);
return cpu_to_le16(dur);
}
@@ -194,7 +209,7 @@ __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
struct ieee80211_rate *rate;
struct ieee80211_sub_if_data *sdata;
bool short_preamble;
- int erp;
+ int erp, shift = 0, bitrate;
u16 dur;
struct ieee80211_supported_band *sband;
@@ -210,17 +225,20 @@ __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
short_preamble = sdata->vif.bss_conf.use_short_preamble;
if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
erp = rate->flags & IEEE80211_RATE_ERP_G;
+ shift = ieee80211_vif_get_shift(vif);
}
+ bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
+
/* CTS duration */
- dur = ieee80211_frame_duration(sband->band, 10, rate->bitrate,
- erp, short_preamble);
+ dur = ieee80211_frame_duration(sband->band, 10, bitrate,
+ erp, short_preamble, shift);
/* Data frame duration */
- dur += ieee80211_frame_duration(sband->band, frame_len, rate->bitrate,
- erp, short_preamble);
+ dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
+ erp, short_preamble, shift);
/* ACK duration */
- dur += ieee80211_frame_duration(sband->band, 10, rate->bitrate,
- erp, short_preamble);
+ dur += ieee80211_frame_duration(sband->band, 10, bitrate,
+ erp, short_preamble, shift);
return cpu_to_le16(dur);
}
@@ -235,7 +253,7 @@ __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
struct ieee80211_rate *rate;
struct ieee80211_sub_if_data *sdata;
bool short_preamble;
- int erp;
+ int erp, shift = 0, bitrate;
u16 dur;
struct ieee80211_supported_band *sband;
@@ -250,15 +268,18 @@ __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
short_preamble = sdata->vif.bss_conf.use_short_preamble;
if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
erp = rate->flags & IEEE80211_RATE_ERP_G;
+ shift = ieee80211_vif_get_shift(vif);
}
+ bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
+
/* Data frame duration */
- dur = ieee80211_frame_duration(sband->band, frame_len, rate->bitrate,
- erp, short_preamble);
+ dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
+ erp, short_preamble, shift);
if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
/* ACK duration */
- dur += ieee80211_frame_duration(sband->band, 10, rate->bitrate,
- erp, short_preamble);
+ dur += ieee80211_frame_duration(sband->band, 10, bitrate,
+ erp, short_preamble, shift);
}
return cpu_to_le16(dur);
@@ -1052,32 +1073,6 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
}
}
-void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
- const size_t supp_rates_len,
- const u8 *supp_rates)
-{
- struct ieee80211_chanctx_conf *chanctx_conf;
- int i, have_higher_than_11mbit = 0;
-
- /* cf. IEEE 802.11 9.2.12 */
- for (i = 0; i < supp_rates_len; i++)
- if ((supp_rates[i] & 0x7f) * 5 > 110)
- have_higher_than_11mbit = 1;
-
- rcu_read_lock();
- chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
-
- if (chanctx_conf &&
- chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ &&
- have_higher_than_11mbit)
- sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
- else
- sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
- rcu_read_unlock();
-
- ieee80211_set_wmm_default(sdata, true);
-}
-
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
u16 transaction, u16 auth_alg, u16 status,
const u8 *extra, size_t extra_len, const u8 *da,
@@ -1162,7 +1157,7 @@ void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
size_t buffer_len, const u8 *ie, size_t ie_len,
enum ieee80211_band band, u32 rate_mask,
- u8 channel)
+ struct cfg80211_chan_def *chandef)
{
struct ieee80211_supported_band *sband;
u8 *pos = buffer, *end = buffer + buffer_len;
@@ -1171,16 +1166,26 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
u8 rates[32];
int num_rates;
int ext_rates_len;
+ int shift;
+ u32 rate_flags;
sband = local->hw.wiphy->bands[band];
if (WARN_ON_ONCE(!sband))
return 0;
+ rate_flags = ieee80211_chandef_rate_flags(chandef);
+ shift = ieee80211_chandef_get_shift(chandef);
+
num_rates = 0;
for (i = 0; i < sband->n_bitrates; i++) {
if ((BIT(i) & rate_mask) == 0)
continue; /* skip rate */
- rates[num_rates++] = (u8) (sband->bitrates[i].bitrate / 5);
+ if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
+ continue;
+
+ rates[num_rates++] =
+ (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
+ (1 << shift) * 5);
}
supp_rates_len = min_t(int, num_rates, 8);
@@ -1220,12 +1225,13 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
pos += ext_rates_len;
}
- if (channel && sband->band == IEEE80211_BAND_2GHZ) {
+ if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) {
if (end - pos < 3)
goto out_err;
*pos++ = WLAN_EID_DS_PARAMS;
*pos++ = 1;
- *pos++ = channel;
+ *pos++ = ieee80211_frequency_to_channel(
+ chandef->chan->center_freq);
}
/* insert custom IEs that go before HT */
@@ -1290,9 +1296,9 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
bool directed)
{
struct ieee80211_local *local = sdata->local;
+ struct cfg80211_chan_def chandef;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
- u8 chan_no;
int ies_len;
/*
@@ -1300,10 +1306,11 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
* in order to maximize the chance that we get a response. Some
* badly-behaved APs don't respond when this parameter is included.
*/
+ chandef.width = sdata->vif.bss_conf.chandef.width;
if (directed)
- chan_no = 0;
+ chandef.chan = NULL;
else
- chan_no = ieee80211_frequency_to_channel(chan->center_freq);
+ chandef.chan = chan;
skb = ieee80211_probereq_get(&local->hw, &sdata->vif,
ssid, ssid_len, 100 + ie_len);
@@ -1313,7 +1320,7 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb),
skb_tailroom(skb),
ie, ie_len, chan->band,
- ratemask, chan_no);
+ ratemask, &chandef);
skb_put(skb, ies_len);
if (dst) {
@@ -1347,16 +1354,19 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
}
}
-u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
+u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems,
enum ieee80211_band band, u32 *basic_rates)
{
struct ieee80211_supported_band *sband;
struct ieee80211_rate *bitrates;
size_t num_rates;
- u32 supp_rates;
- int i, j;
- sband = local->hw.wiphy->bands[band];
+ u32 supp_rates, rate_flags;
+ int i, j, shift;
+ sband = sdata->local->hw.wiphy->bands[band];
+
+ rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
+ shift = ieee80211_vif_get_shift(&sdata->vif);
if (WARN_ON(!sband))
return 1;
@@ -1381,7 +1391,15 @@ u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
continue;
for (j = 0; j < num_rates; j++) {
- if (bitrates[j].bitrate == own_rate) {
+ int brate;
+ if ((rate_flags & sband->bitrates[j].flags)
+ != rate_flags)
+ continue;
+
+ brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
+ 1 << shift);
+
+ if (brate == own_rate) {
supp_rates |= BIT(j);
if (basic_rates && is_basic)
*basic_rates |= BIT(j);
@@ -1435,8 +1453,8 @@ int ieee80211_reconfig(struct ieee80211_local *local)
local->resuming = true;
if (local->wowlan) {
- local->wowlan = false;
res = drv_resume(local);
+ local->wowlan = false;
if (res < 0) {
local->resuming = false;
return res;
@@ -2004,18 +2022,56 @@ void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
cfg80211_chandef_create(chandef, control_chan, channel_type);
}
+int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
+ const struct ieee80211_supported_band *sband,
+ const u8 *srates, int srates_len, u32 *rates)
+{
+ u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
+ int shift = ieee80211_chandef_get_shift(chandef);
+ struct ieee80211_rate *br;
+ int brate, rate, i, j, count = 0;
+
+ *rates = 0;
+
+ for (i = 0; i < srates_len; i++) {
+ rate = srates[i] & 0x7f;
+
+ for (j = 0; j < sband->n_bitrates; j++) {
+ br = &sband->bitrates[j];
+ if ((rate_flags & br->flags) != rate_flags)
+ continue;
+
+ brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
+ if (brate == rate) {
+ *rates |= BIT(j);
+ count++;
+ break;
+ }
+ }
+ }
+ return count;
+}
+
int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, bool need_basic,
enum ieee80211_band band)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
- int rate;
+ int rate, shift;
u8 i, rates, *pos;
u32 basic_rates = sdata->vif.bss_conf.basic_rates;
+ u32 rate_flags;
+ shift = ieee80211_vif_get_shift(&sdata->vif);
+ rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
sband = local->hw.wiphy->bands[band];
- rates = sband->n_bitrates;
+ rates = 0;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
+ continue;
+ rates++;
+ }
if (rates > 8)
rates = 8;
@@ -2027,10 +2083,15 @@ int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
*pos++ = rates;
for (i = 0; i < rates; i++) {
u8 basic = 0;
+ if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
+ continue;
+
if (need_basic && basic_rates & BIT(i))
basic = 0x80;
rate = sband->bitrates[i].bitrate;
- *pos++ = basic | (u8) (rate / 5);
+ rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
+ 5 * (1 << shift));
+ *pos++ = basic | (u8) rate;
}
return 0;
@@ -2042,12 +2103,22 @@ int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
- int rate;
+ int rate, skip, shift;
u8 i, exrates, *pos;
u32 basic_rates = sdata->vif.bss_conf.basic_rates;
+ u32 rate_flags;
+
+ rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
+ shift = ieee80211_vif_get_shift(&sdata->vif);
sband = local->hw.wiphy->bands[band];
- exrates = sband->n_bitrates;
+ exrates = 0;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
+ continue;
+ exrates++;
+ }
+
if (exrates > 8)
exrates -= 8;
else
@@ -2060,12 +2131,19 @@ int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
pos = skb_put(skb, exrates + 2);
*pos++ = WLAN_EID_EXT_SUPP_RATES;
*pos++ = exrates;
+ skip = 0;
for (i = 8; i < sband->n_bitrates; i++) {
u8 basic = 0;
+ if ((rate_flags & sband->bitrates[i].flags)
+ != rate_flags)
+ continue;
+ if (skip++ < 8)
+ continue;
if (need_basic && basic_rates & BIT(i))
basic = 0x80;
- rate = sband->bitrates[i].bitrate;
- *pos++ = basic | (u8) (rate / 5);
+ rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
+ 5 * (1 << shift));
+ *pos++ = basic | (u8) rate;
}
}
return 0;
@@ -2149,9 +2227,17 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
} else {
struct ieee80211_supported_band *sband;
+ int shift = 0;
+ int bitrate;
+
+ if (status->flag & RX_FLAG_10MHZ)
+ shift = 1;
+ if (status->flag & RX_FLAG_5MHZ)
+ shift = 2;
sband = local->hw.wiphy->bands[status->band];
- ri.legacy = sband->bitrates[status->rate_idx].bitrate;
+ bitrate = sband->bitrates[status->rate_idx].bitrate;
+ ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
}
rate = cfg80211_calculate_bitrate(&ri);
generated by cgit v0.10.2 at 2024-11-17 20:26:05 (GMT)