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47 lines
1.8 KiB
Diff
47 lines
1.8 KiB
Diff
From 14d5e14c8a6c257eb322ddeb294ac4c243a7d2e1 Mon Sep 17 00:00:00 2001
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From: Stanislaw Gruszka <sgruszka@redhat.com>
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Date: Fri, 23 Aug 2019 14:48:03 +0200
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Subject: [PATCH 14/15] rt2x00: clear up IV's on key removal
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After looking at code I realized that my previous fix
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95844124385e ("rt2x00: clear IV's on start to fix AP mode regression")
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was incomplete. We can still have wrong IV's after re-keyring.
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To fix that, clear up IV's also on key removal.
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Fixes: 710e6cc1595e ("rt2800: do not nullify initialization vector data")
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Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
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tested-by: Emil Karlson <jekarl@iki.fi>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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.../net/wireless/ralink/rt2x00/rt2800lib.c | 19 ++++++++++++-------
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1 file changed, 12 insertions(+), 7 deletions(-)
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--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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@@ -1665,13 +1665,18 @@ static void rt2800_config_wcid_attr_ciph
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offset = MAC_IVEIV_ENTRY(key->hw_key_idx);
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- rt2800_register_multiread(rt2x00dev, offset,
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- &iveiv_entry, sizeof(iveiv_entry));
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- if ((crypto->cipher == CIPHER_TKIP) ||
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- (crypto->cipher == CIPHER_TKIP_NO_MIC) ||
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- (crypto->cipher == CIPHER_AES))
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- iveiv_entry.iv[3] |= 0x20;
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- iveiv_entry.iv[3] |= key->keyidx << 6;
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+ if (crypto->cmd == SET_KEY) {
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+ rt2800_register_multiread(rt2x00dev, offset,
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+ &iveiv_entry, sizeof(iveiv_entry));
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+ if ((crypto->cipher == CIPHER_TKIP) ||
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+ (crypto->cipher == CIPHER_TKIP_NO_MIC) ||
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+ (crypto->cipher == CIPHER_AES))
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+ iveiv_entry.iv[3] |= 0x20;
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+ iveiv_entry.iv[3] |= key->keyidx << 6;
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+ } else {
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+ memset(&iveiv_entry, 0, sizeof(iveiv_entry));
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+ }
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+
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rt2800_register_multiwrite(rt2x00dev, offset,
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&iveiv_entry, sizeof(iveiv_entry));
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}
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