mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-04 18:09:57 +00:00
mac80211: add rate mask logic for vht rates
Define rc_rateidx_vht_mcs_mask array and rate_idx_match_vht_mcs_mask() method in order to apply mcs mask for vht rates Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
parent
e910867bd2
commit
b119ad6e72
6 changed files with 181 additions and 16 deletions
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@ -2504,16 +2504,26 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
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sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
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memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
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sizeof(mask->control[i].ht_mcs));
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memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
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mask->control[i].vht_mcs,
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sizeof(mask->control[i].vht_mcs));
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sdata->rc_has_mcs_mask[i] = false;
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sdata->rc_has_vht_mcs_mask[i] = false;
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if (!sband)
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continue;
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for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
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if (~sdata->rc_rateidx_mcs_mask[i][j]) {
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for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
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if (~sdata->rc_rateidx_mcs_mask[i][j])
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sdata->rc_has_mcs_mask[i] = true;
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if (~sdata->rc_rateidx_vht_mcs_mask[i][j])
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sdata->rc_has_vht_mcs_mask[i] = true;
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if (sdata->rc_has_mcs_mask[i] &&
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sdata->rc_has_vht_mcs_mask[i])
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break;
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}
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}
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}
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return 0;
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@ -186,6 +186,38 @@ IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz,
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IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz,
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rc_rateidx_mcs_mask[IEEE80211_BAND_5GHZ], HEXARRAY);
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static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_2ghz(
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const struct ieee80211_sub_if_data *sdata,
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char *buf, int buflen)
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{
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int i, len = 0;
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const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[IEEE80211_BAND_2GHZ];
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for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
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len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]);
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len += scnprintf(buf + len, buflen - len, "\n");
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return len;
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}
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IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_2ghz);
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static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_5ghz(
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const struct ieee80211_sub_if_data *sdata,
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char *buf, int buflen)
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{
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int i, len = 0;
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const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[IEEE80211_BAND_5GHZ];
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for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
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len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]);
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len += scnprintf(buf + len, buflen - len, "\n");
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return len;
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}
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IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_5ghz);
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IEEE80211_IF_FILE(flags, flags, HEX);
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IEEE80211_IF_FILE(state, state, LHEX);
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IEEE80211_IF_FILE(txpower, vif.bss_conf.txpower, DEC);
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@ -565,6 +597,8 @@ static void add_common_files(struct ieee80211_sub_if_data *sdata)
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DEBUGFS_ADD(rc_rateidx_mask_5ghz);
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DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
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DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
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DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz);
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DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz);
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DEBUGFS_ADD(hw_queues);
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}
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@ -901,6 +901,9 @@ struct ieee80211_sub_if_data {
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bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
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u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
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bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS];
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u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX];
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union {
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struct ieee80211_if_ap ap;
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struct ieee80211_if_wds wds;
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@ -1713,6 +1716,8 @@ void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
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enum ieee80211_band band, bool nss_only);
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void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_sta_vht_cap *vht_cap);
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void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
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u16 vht_mask[NL80211_VHT_NSS_MAX]);
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/* Spectrum management */
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void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
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@ -1788,13 +1788,23 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
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sband = local->hw.wiphy->bands[i];
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sdata->rc_rateidx_mask[i] =
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sband ? (1 << sband->n_bitrates) - 1 : 0;
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if (sband)
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if (sband) {
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__le16 cap;
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u16 *vht_rate_mask;
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memcpy(sdata->rc_rateidx_mcs_mask[i],
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sband->ht_cap.mcs.rx_mask,
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sizeof(sdata->rc_rateidx_mcs_mask[i]));
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else
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cap = sband->vht_cap.vht_mcs.rx_mcs_map;
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vht_rate_mask = sdata->rc_rateidx_vht_mcs_mask[i];
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ieee80211_get_vht_mask_from_cap(cap, vht_rate_mask);
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} else {
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memset(sdata->rc_rateidx_mcs_mask[i], 0,
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sizeof(sdata->rc_rateidx_mcs_mask[i]));
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memset(sdata->rc_rateidx_vht_mcs_mask[i], 0,
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sizeof(sdata->rc_rateidx_vht_mcs_mask[i]));
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}
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}
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ieee80211_set_default_queues(sdata);
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@ -414,16 +414,77 @@ static bool rate_idx_match_mcs_mask(s8 *rate_idx, u8 *mcs_mask)
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return false;
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}
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static bool rate_idx_match_vht_mcs_mask(s8 *rate_idx, u16 *vht_mask)
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{
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int i, j;
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int ridx, rbit;
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ridx = *rate_idx >> 4;
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rbit = *rate_idx & 0xf;
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if (ridx < 0 || ridx >= NL80211_VHT_NSS_MAX)
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return false;
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/* See whether the selected rate or anything below it is allowed. */
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for (i = ridx; i >= 0; i--) {
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for (j = rbit; j >= 0; j--) {
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if (vht_mask[i] & BIT(j)) {
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*rate_idx = (i << 4) | j;
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return true;
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}
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}
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rbit = 15;
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}
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/* Try to find a higher rate that would be allowed */
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ridx = (*rate_idx + 1) >> 4;
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rbit = (*rate_idx + 1) & 0xf;
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for (i = ridx; i < NL80211_VHT_NSS_MAX; i++) {
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for (j = rbit; j < 16; j++) {
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if (vht_mask[i] & BIT(j)) {
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*rate_idx = (i << 4) | j;
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return true;
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}
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}
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rbit = 0;
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}
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return false;
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}
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static void rate_idx_match_mask(s8 *rate_idx, u16 *rate_flags,
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struct ieee80211_supported_band *sband,
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enum nl80211_chan_width chan_width,
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u32 mask,
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u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
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u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN],
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u16 vht_mask[NL80211_VHT_NSS_MAX])
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{
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/* handle HT rates */
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if (*rate_flags & IEEE80211_TX_RC_MCS) {
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if (*rate_flags & IEEE80211_TX_RC_VHT_MCS) {
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/* handle VHT rates */
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if (rate_idx_match_vht_mcs_mask(rate_idx, vht_mask))
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return;
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*rate_idx = 0;
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/* keep protection flags */
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*rate_flags &= (IEEE80211_TX_RC_USE_RTS_CTS |
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IEEE80211_TX_RC_USE_CTS_PROTECT |
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IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
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*rate_flags |= IEEE80211_TX_RC_MCS;
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if (chan_width == NL80211_CHAN_WIDTH_40)
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*rate_flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
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if (rate_idx_match_mcs_mask(rate_idx, mcs_mask))
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return;
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/* also try the legacy rates. */
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*rate_flags &= ~(IEEE80211_TX_RC_MCS |
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IEEE80211_TX_RC_40_MHZ_WIDTH);
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if (rate_idx_match_legacy_mask(rate_idx, sband->n_bitrates,
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mask))
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return;
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} else if (*rate_flags & IEEE80211_TX_RC_MCS) {
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/* handle HT rates */
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if (rate_idx_match_mcs_mask(rate_idx, mcs_mask))
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return;
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@ -436,7 +497,7 @@ static void rate_idx_match_mask(s8 *rate_idx, u16 *rate_flags,
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if (rate_idx_match_legacy_mask(rate_idx, sband->n_bitrates,
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mask))
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return;
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} else if (!(*rate_flags & IEEE80211_TX_RC_VHT_MCS)) {
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} else {
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/* handle legacy rates */
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if (rate_idx_match_legacy_mask(rate_idx, sband->n_bitrates,
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mask))
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@ -620,7 +681,8 @@ static void rate_control_fill_sta_table(struct ieee80211_sta *sta,
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static bool rate_control_cap_mask(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_supported_band *sband,
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struct ieee80211_sta *sta, u32 *mask,
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u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
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u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN],
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u16 vht_mask[NL80211_VHT_NSS_MAX])
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{
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u32 i, flags;
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@ -632,7 +694,8 @@ static bool rate_control_cap_mask(struct ieee80211_sub_if_data *sdata,
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}
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if (*mask == (1 << sband->n_bitrates) - 1 &&
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!sdata->rc_has_mcs_mask[sband->band])
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!sdata->rc_has_mcs_mask[sband->band] &&
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!sdata->rc_has_vht_mcs_mask[sband->band])
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return false;
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if (sdata->rc_has_mcs_mask[sband->band])
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@ -641,11 +704,25 @@ static bool rate_control_cap_mask(struct ieee80211_sub_if_data *sdata,
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else
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memset(mcs_mask, 0xff, IEEE80211_HT_MCS_MASK_LEN);
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if (sdata->rc_has_vht_mcs_mask[sband->band])
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memcpy(vht_mask, sdata->rc_rateidx_vht_mcs_mask[sband->band],
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sizeof(u16) * NL80211_VHT_NSS_MAX);
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else
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memset(vht_mask, 0xff, sizeof(u16) * NL80211_VHT_NSS_MAX);
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if (sta) {
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__le16 sta_vht_cap;
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u16 sta_vht_mask[NL80211_VHT_NSS_MAX];
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/* Filter out rates that the STA does not support */
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*mask &= sta->supp_rates[sband->band];
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for (i = 0; i < sizeof(mcs_mask); i++)
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mcs_mask[i] &= sta->ht_cap.mcs.rx_mask[i];
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sta_vht_cap = sta->vht_cap.vht_mcs.rx_mcs_map;
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ieee80211_get_vht_mask_from_cap(sta_vht_cap, sta_vht_mask);
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for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
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vht_mask[i] &= sta_vht_mask[i];
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}
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return true;
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@ -659,10 +736,11 @@ rate_control_apply_mask_ratetbl(struct sta_info *sta,
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int i;
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u32 mask;
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u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN];
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u16 vht_mask[NL80211_VHT_NSS_MAX];
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enum nl80211_chan_width chan_width;
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if (!rate_control_cap_mask(sta->sdata, sband, &sta->sta, &mask,
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mcs_mask))
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mcs_mask, vht_mask))
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return;
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chan_width = sta->sdata->vif.bss_conf.chandef.width;
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@ -671,7 +749,8 @@ rate_control_apply_mask_ratetbl(struct sta_info *sta,
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break;
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rate_idx_match_mask(&rates->rate[i].idx, &rates->rate[i].flags,
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sband, chan_width, mask, mcs_mask);
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sband, chan_width, mask, mcs_mask,
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vht_mask);
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}
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}
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@ -684,7 +763,7 @@ static void rate_control_apply_mask(struct ieee80211_sub_if_data *sdata,
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enum nl80211_chan_width chan_width;
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u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN];
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u32 mask;
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u16 rate_flags;
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u16 rate_flags, vht_mask[NL80211_VHT_NSS_MAX];
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int i;
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/*
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* default mask (allow all rates) is used to save some processing for
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* the common case.
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*/
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if (!rate_control_cap_mask(sdata, sband, sta, &mask, mcs_mask))
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if (!rate_control_cap_mask(sdata, sband, sta, &mask, mcs_mask,
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vht_mask))
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return;
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/*
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@ -708,7 +788,7 @@ static void rate_control_apply_mask(struct ieee80211_sub_if_data *sdata,
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rate_flags = rates[i].flags;
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rate_idx_match_mask(&rates[i].idx, &rate_flags, sband,
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chan_width, mask, mcs_mask);
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chan_width, mask, mcs_mask, vht_mask);
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rates[i].flags = rate_flags;
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}
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}
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@ -426,3 +426,29 @@ void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
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if (changed > 0)
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rate_control_rate_update(local, sband, sta, changed);
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}
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void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
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u16 vht_mask[NL80211_VHT_NSS_MAX])
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{
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int i;
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u16 mask, cap = le16_to_cpu(vht_cap);
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for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
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mask = (cap >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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switch (mask) {
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case IEEE80211_VHT_MCS_SUPPORT_0_7:
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vht_mask[i] = 0x00FF;
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break;
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case IEEE80211_VHT_MCS_SUPPORT_0_8:
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vht_mask[i] = 0x01FF;
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break;
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case IEEE80211_VHT_MCS_SUPPORT_0_9:
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vht_mask[i] = 0x03FF;
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break;
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case IEEE80211_VHT_MCS_NOT_SUPPORTED:
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default:
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vht_mask[i] = 0;
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break;
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}
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}
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}
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