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mac80211: backport an upstream patch needed by mt76 for AES_GMAC key support

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Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2024-06-07 06:02:05 +02:00
parent eea666d583
commit b9650de249
1 changed files with 70 additions and 0 deletions
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package/kernel/mac80211/patches/subsys/333-wifi-mac80211-extend-IEEE80211_KEY_FLAG_GENERATE_MMI.patch Normal file
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@ -0,0 +1,70 @@
From: Michael-CY Lee <michael-cy.lee@mediatek.com>
Date: Tue, 26 Mar 2024 08:30:36 +0800
Subject: [PATCH] wifi: mac80211: extend IEEE80211_KEY_FLAG_GENERATE_MMIE to
other ciphers
Extend the flag IEEE80211_KEY_FLAG_GENERATE_MMIE to BIP-CMAC-256,
BIP-GMAC-128 and BIP-GMAC-256 for the same reason and in the same
way that the flag was added originally in commit a0b4496a4368
("mac80211: add IEEE80211_KEY_FLAG_GENERATE_MMIE to ieee80211_key_flags").
Signed-off-by: Michael-CY Lee <michael-cy.lee@mediatek.com>
Link: https://msgid.link/20240326003036.15215-1-michael-cy.lee@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -2032,8 +2032,8 @@ static inline bool lockdep_vif_mutex_hel
* @IEEE80211_KEY_FLAG_GENERATE_MMIC on the same key.
* @IEEE80211_KEY_FLAG_NO_AUTO_TX: Key needs explicit Tx activation.
* @IEEE80211_KEY_FLAG_GENERATE_MMIE: This flag should be set by the driver
- * for a AES_CMAC key to indicate that it requires sequence number
- * generation only
+ * for a AES_CMAC or a AES_GMAC key to indicate that it requires sequence
+ * number generation only
*/
enum ieee80211_key_flags {
IEEE80211_KEY_FLAG_GENERATE_IV_MGMT = BIT(0),
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -882,7 +882,8 @@ ieee80211_crypto_aes_cmac_256_encrypt(st
info = IEEE80211_SKB_CB(skb);
- if (info->control.hw_key)
+ if (info->control.hw_key &&
+ !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIE))
return TX_CONTINUE;
if (WARN_ON(skb_tailroom(skb) < sizeof(*mmie)))
@@ -898,6 +899,9 @@ ieee80211_crypto_aes_cmac_256_encrypt(st
bip_ipn_set64(mmie->sequence_number, pn64);
+ if (info->control.hw_key)
+ return TX_CONTINUE;
+
bip_aad(skb, aad);
/* MIC = AES-256-CMAC(IGTK, AAD || Management Frame Body || MMIE, 128)
@@ -1027,7 +1031,8 @@ ieee80211_crypto_aes_gmac_encrypt(struct
info = IEEE80211_SKB_CB(skb);
- if (info->control.hw_key)
+ if (info->control.hw_key &&
+ !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIE))
return TX_CONTINUE;
if (WARN_ON(skb_tailroom(skb) < sizeof(*mmie)))
@@ -1043,6 +1048,9 @@ ieee80211_crypto_aes_gmac_encrypt(struct
bip_ipn_set64(mmie->sequence_number, pn64);
+ if (info->control.hw_key)
+ return TX_CONTINUE;
+
bip_aad(skb, aad);
hdr = (struct ieee80211_hdr *)skb->data;