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wifi: iwlwifi: mld: Disallow using a per-STA GTK for Tx

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When a GTK is configured for a station, it can only be used for Rx
and never for Tx. In such a case, set the IWL_SEC_KEY_FLAG_NO_TX
flag when the key is installed, so the FW will not use it for Tx.

Specifically, this is needed for per-station GTK installed on NAN
NDI stations associated with NAN Data interfaces.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Link: https://patch.msgid.link/20260515150751.b004744087cb.I25fb83f9e3dc563d122a160da150d793155513fa@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
This commit is contained in:
Ilan Peer 2026-05-15 15:09:41 +03:00 committed by Miri Korenblit
parent f26185a4da
commit 7b32710111
1 changed files with 6 additions and 0 deletions
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6
drivers/net/wireless/intel/iwlwifi/mld/key.c
View File

@ -49,6 +49,12 @@ static u32 iwl_mld_get_key_flags(struct iwl_mld *mld,
if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU)
flags |= IWL_SEC_KEY_FLAG_SPP_AMSDU;
/* When a GTK is configured for a station, it can only be
* used for Rx and never for Tx. Thus, set the NO TX flag.
*/
if (!pairwise && sta)
flags |= IWL_SEC_KEY_FLAG_NO_TX;
return flags;
}