b43: Fix connection problem with WPA3

Since the driver was first introduced into the kernel, it has only
handled the ciphers associated with WEP, WPA, and WPA2. It fails with
WPA3 even though mac80211 can handle those additional ciphers in software,
b43 did not report that it could handle them. By setting MFP_CAPABLE using
ieee80211_set_hw(), the problem is fixed.

With this change, b43 will handle the ciphers it knows in hardware,
and let mac80211 handle the others in software. It is not necessary to
use the module parameter NOHWCRYPT to turn hardware encryption off.
Although this change essentially eliminates that module parameter,
I am choosing to keep it for cases where the hardware is broken,
and software encryption is required for all ciphers.

Reported-and-tested-by: Rui Salvaterra <rsalvaterra@gmail.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200526155909.5807-2-Larry.Finger@lwfinger.net

diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
index 39da1a4c30acf0a10b38211746c7c2a8f5be70a4..3ad94dad2d89b6da075d9fcc7c98f9eb89904086 100644 (file)
--- a/drivers/net/wireless/broadcom/b43/main.c
+++ b/drivers/net/wireless/broadcom/b43/main.c
@@ -5569,7 +5569,7 @@ static struct b43_wl *b43_wireless_init(struct b43_bus_dev *dev)
        /* fill hw info */
        ieee80211_hw_set(hw, RX_INCLUDES_FCS);
        ieee80211_hw_set(hw, SIGNAL_DBM);
-
+       ieee80211_hw_set(hw, MFP_CAPABLE);
        hw->wiphy->interface_modes =
                BIT(NL80211_IFTYPE_AP) |
                BIT(NL80211_IFTYPE_MESH_POINT) |