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nl80211: Implement TX of control port frames

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This commit implements the TX side of NL80211_CMD_CONTROL_PORT_FRAME.
Userspace provides the raw EAPoL frame using NL80211_ATTR_FRAME.
Userspace should also provide the destination address and the protocol
type to use when sending the frame.  This is used to implement TX of
Pre-authentication frames.  If CONTROL_PORT_ETHERTYPE_NO_ENCRYPT is
specified, then the driver will be asked not to encrypt the outgoing
frame.

A new EXT_FEATURE flag is introduced so that nl80211 code can check
whether a given wiphy has capability to pass EAPoL frames over nl80211.

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Denis Kenzior
2018-03-26 12:52:42 -05:00
committed by Johannes Berg
parent 6a671a50f8
commit 2576a9ace4
5 changed files with 123 additions and 1 deletions
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9
include/net/cfg80211.h
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@@ -2961,6 +2961,9 @@ struct cfg80211_external_auth_params {
*
* @external_auth: indicates result of offloaded authentication processing from
* user space
*
* @tx_control_port: TX a control port frame (EAPoL). The noencrypt parameter
* tells the driver that the frame should not be encrypted.
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -3256,6 +3259,12 @@ struct cfg80211_ops {
const u8 *aa);
int (*external_auth)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_external_auth_params *params);
int (*tx_control_port)(struct wiphy *wiphy,
struct net_device *dev,
const u8 *buf, size_t len,
const u8 *dest, const __be16 proto,
const bool noencrypt);
};
/*