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-rw-r--r--include/net/mac80211.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 275ee56152a..33b87c50a4c 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1634,6 +1634,12 @@ struct ieee80211_tx_control {
* be created. It is expected user-space will create vifs as
* desired (and thus have them named as desired).
*
+ * @IEEE80211_HW_SW_CRYPTO_CONTROL: The driver wants to control which of the
+ * crypto algorithms can be done in software - so don't automatically
+ * try to fall back to it if hardware crypto fails, but do so only if
+ * the driver returns 1. This also forces the driver to advertise its
+ * supported cipher suites.
+ *
* @IEEE80211_HW_QUEUE_CONTROL: The driver wants to control per-interface
* queue mapping in order to use different queues (not just one per AC)
* for different virtual interfaces. See the doc section on HW queue
@@ -1681,6 +1687,7 @@ enum ieee80211_hw_flags {
IEEE80211_HW_MFP_CAPABLE = 1<<13,
IEEE80211_HW_WANT_MONITOR_VIF = 1<<14,
IEEE80211_HW_NO_AUTO_VIF = 1<<15,
+ IEEE80211_HW_SW_CRYPTO_CONTROL = 1<<16,
/* free slots */
IEEE80211_HW_REPORTS_TX_ACK_STATUS = 1<<18,
IEEE80211_HW_CONNECTION_MONITOR = 1<<19,
@@ -1955,6 +1962,11 @@ void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb);
* added; if you return 0 then hw_key_idx must be assigned to the
* hardware key index, you are free to use the full u8 range.
*
+ * Note that in the case that the @IEEE80211_HW_SW_CRYPTO_CONTROL flag is
+ * set, mac80211 will not automatically fall back to software crypto if
+ * enabling hardware crypto failed. The set_key() call may also return the
+ * value 1 to permit this specific key/algorithm to be done in software.
+ *
* When the cmd is %DISABLE_KEY then it must succeed.
*
* Note that it is permissible to not decrypt a frame even if a key