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34 lines
1.2 KiB
34 lines
1.2 KiB
From: Felix Fietkau <nbd@nbd.name>
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Date: Thu, 17 Sep 2020 12:07:19 +0200
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Subject: [PATCH] mac80211: do not allow bigger VHT MPDUs than the hardware
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supports
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Limit maximum VHT MPDU size by local capability
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/net/mac80211/vht.c
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+++ b/net/mac80211/vht.c
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@@ -170,10 +170,7 @@ ieee80211_vht_cap_ie_to_sta_vht_cap(stru
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/* take some capabilities as-is */
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cap_info = le32_to_cpu(vht_cap_ie->vht_cap_info);
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vht_cap->cap = cap_info;
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- vht_cap->cap &= IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 |
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- IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 |
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- IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
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- IEEE80211_VHT_CAP_RXLDPC |
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+ vht_cap->cap &= IEEE80211_VHT_CAP_RXLDPC |
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IEEE80211_VHT_CAP_VHT_TXOP_PS |
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IEEE80211_VHT_CAP_HTC_VHT |
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IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
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@@ -182,6 +179,9 @@ ieee80211_vht_cap_ie_to_sta_vht_cap(stru
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IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
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IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN;
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+ vht_cap->cap |= min_t(u32, cap_info & IEEE80211_VHT_CAP_MAX_MPDU_MASK,
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+ own_cap.cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK);
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+
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/* and some based on our own capabilities */
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switch (own_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
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case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
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