cfg80211/nl80211: Optional authentication offload to userspace
This interface allows the host driver to offload the authentication to user space. This is exclusively defined for host drivers that do not define separate commands for authentication and association, but rely on userspace SME (e.g., in wpa_supplicant for the ~WPA_DRIVER_FLAGS_SME case) for the authentication to happen. This can be used to implement SAE without full implementation in the kernel/firmware while still being able to use NL80211_CMD_CONNECT with driver-based BSS selection. Host driver sends NL80211_CMD_EXTERNAL_AUTH event to start/abort authentication to the port on which connect is triggered and status of authentication is further indicated by user space to host driver through the same command response interface. User space entities advertise this capability through the NL80211_ATTR_EXTERNAL_AUTH_SUPP flag in the NL80211_CMD_CONNECT request. Host drivers shall look at this capability to offload the authentication. Signed-off-by: NSrinivas Dasari <dasaris@qti.qualcomm.com> Signed-off-by: NJouni Malinen <jouni@qca.qualcomm.com> [add socket connection ownership check] Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
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