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wifi: rtl8xxxu: enable MFP support

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In order to connect to networks which require 802.11w, add the
MFP_CAPABLE flag and let mac80211 do the actual crypto in software.

When a robust management frames is received, rx_dec->swdec is not set,
even though the HW did not decrypt it. Extend the check and don't set
RX_FLAG_DECRYPTED for these frames in order to use SW decryption.

Signed-off-by: Martin Kaistra <martin.kaistra@linutronix.de>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://msgid.link/20240314164850.86432-1-martin.kaistra@linutronix.de
This commit is contained in:
Martin Kaistra
2024-03-14 17:48:50 +01:00
committed by Ping-Ke Shih
parent c76936a7e1
commit 77f5924fc4
1 changed files with 7 additions and 2 deletions
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9
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
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@@ -6473,7 +6473,9 @@ int rtl8xxxu_parse_rxdesc16(struct rtl8xxxu_priv *priv, struct sk_buff *skb)
rx_status->mactime = rx_desc->tsfl;
rx_status->flag |= RX_FLAG_MACTIME_START;
if (!rx_desc->swdec)
if (!rx_desc->swdec &&
!(_ieee80211_is_robust_mgmt_frame(hdr) &&
ieee80211_has_protected(hdr->frame_control)))
rx_status->flag |= RX_FLAG_DECRYPTED;
if (rx_desc->crc32)
rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
@@ -6578,7 +6580,9 @@ int rtl8xxxu_parse_rxdesc24(struct rtl8xxxu_priv *priv, struct sk_buff *skb)
rx_status->mactime = rx_desc->tsfl;
rx_status->flag |= RX_FLAG_MACTIME_START;
if (!rx_desc->swdec)
if (!rx_desc->swdec &&
!(_ieee80211_is_robust_mgmt_frame(hdr) &&
ieee80211_has_protected(hdr->frame_control)))
rx_status->flag |= RX_FLAG_DECRYPTED;
if (rx_desc->crc32)
rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
@@ -7998,6 +8002,7 @@ static int rtl8xxxu_probe(struct usb_interface *interface,
ieee80211_hw_set(hw, HAS_RATE_CONTROL);
ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
ieee80211_hw_set(hw, AMPDU_AGGREGATION);
ieee80211_hw_set(hw, MFP_CAPABLE);
wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);