diff options
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 92 |
1 files changed, 86 insertions, 6 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 2d0c19c..04681a4 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -7328,11 +7328,72 @@ static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, return true; } +static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) +{ + u16 mcs_mask = 0; + + switch (vht_mcs_map) { + case IEEE80211_VHT_MCS_NOT_SUPPORTED: + break; + case IEEE80211_VHT_MCS_SUPPORT_0_7: + mcs_mask = 0x00FF; + break; + case IEEE80211_VHT_MCS_SUPPORT_0_8: + mcs_mask = 0x01FF; + break; + case IEEE80211_VHT_MCS_SUPPORT_0_9: + mcs_mask = 0x03FF; + break; + default: + break; + } + + return mcs_mask; +} + +static void vht_build_mcs_mask(u16 vht_mcs_map, + u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) +{ + u8 nss; + + for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { + vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); + vht_mcs_map >>= 2; + } +} + +static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, + struct nl80211_txrate_vht *txrate, + u16 mcs[NL80211_VHT_NSS_MAX]) +{ + u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); + u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; + u8 i; + + if (!sband->vht_cap.vht_supported) + return false; + + memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); + + /* Build vht_mcs_mask from VHT capabilities */ + vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); + + for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { + if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) + mcs[i] = txrate->mcs[i]; + else + return false; + } + + return true; +} + static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, .len = NL80211_MAX_SUPP_RATES }, [NL80211_TXRATE_HT] = { .type = NLA_BINARY, .len = NL80211_MAX_SUPP_HT_RATES }, + [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, }; static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, @@ -7345,6 +7406,7 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, struct net_device *dev = info->user_ptr[1]; struct nlattr *tx_rates; struct ieee80211_supported_band *sband; + u16 vht_tx_mcs_map; if (!rdev->ops->set_bitrate_mask) return -EOPNOTSUPP; @@ -7361,6 +7423,12 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, memcpy(mask.control[i].ht_mcs, sband->ht_cap.mcs.rx_mask, sizeof(mask.control[i].ht_mcs)); + + if (!sband->vht_cap.vht_supported) + continue; + + vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); + vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs); } /* if no rates are given set it back to the defaults */ @@ -7399,20 +7467,32 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, mask.control[band].ht_mcs)) return -EINVAL; } + if (tb[NL80211_TXRATE_VHT]) { + if (!vht_set_mcs_mask( + sband, + nla_data(tb[NL80211_TXRATE_VHT]), + mask.control[band].vht_mcs)) + return -EINVAL; + } if (mask.control[band].legacy == 0) { - /* don't allow empty legacy rates if HT - * is not even supported. */ - if (!rdev->wiphy.bands[band]->ht_cap.ht_supported) + /* don't allow empty legacy rates if HT or VHT + * are not even supported. + */ + if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || + rdev->wiphy.bands[band]->vht_cap.vht_supported)) return -EINVAL; for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) if (mask.control[band].ht_mcs[i]) - break; + goto out; + + for (i = 0; i < NL80211_VHT_NSS_MAX; i++) + if (mask.control[band].vht_mcs[i]) + goto out; /* legacy and mcs rates may not be both empty */ - if (i == IEEE80211_HT_MCS_MASK_LEN) - return -EINVAL; + return -EINVAL; } } |
