Add config information related to MACsec

Add examples of relevant top level CONFIG clauses for wpa_supplicant
MACsec support to defconfig.

Extend the example of MACsec related network configuration. Also bring
them in line with the format of the other example network configurations.

Signed-off-by: Jaap Keuter <jaap.keuter@xs4all.nl>

wpa_supplicant/defconfig

@@ -73,6 +73,12 @@ CONFIG_DRIVER_NL80211=y
 # Driver interface for wired Ethernet drivers
 CONFIG_DRIVER_WIRED=y
 
+# Driver interface for MACsec capable Qualcomm Atheros drivers
+#CONFIG_DRIVER_MACSEC_QCA=y
+
+# Driver interface for Linux MACsec drivers
+#CONFIG_DRIVER_MACSEC_LINUX=y
+
 # Driver interface for the Broadcom RoboSwitch family
 #CONFIG_DRIVER_ROBOSWITCH=y
 
@@ -83,8 +89,8 @@ CONFIG_DRIVER_WIRED=y
 #LIBS += -lsocket -ldlpi -lnsl
 #LIBS_c += -lsocket
 
-# Enable IEEE 802.1X Supplicant (automatically included if any EAP method is
-# included)
+# Enable IEEE 802.1X Supplicant (automatically included if any EAP method or
+# MACsec is included)
 CONFIG_IEEE8021X_EAPOL=y
 
 # EAP-MD5
@@ -166,6 +172,9 @@ CONFIG_EAP_LEAP=y
 # EAP-EKE
 #CONFIG_EAP_EKE=y
 
+# MACsec
+#CONFIG_MACSEC=y
+
 # PKCS#12 (PFX) support (used to read private key and certificate file from
 # a file that usually has extension .p12 or .pfx)
 CONFIG_PKCS12=y

wpa_supplicant/wpa_supplicant.conf

@@ -1765,15 +1765,26 @@ network={
 }
 
 
-# Example MACsec configuration
-#network={
-#	key_mgmt=IEEE8021X
-#	eap=TTLS
-#	phase2="auth=PAP"
-#	anonymous_identity="anonymous@example.com"
-#	identity="user@example.com"
-#	password="secretr"
-#	ca_cert="/etc/cert/ca.pem"
-#	eapol_flags=0
-#	macsec_policy=1
-#}
+# Example configuration using EAP-TTLS for authentication and key
+# generation for MACsec
+network={
+	key_mgmt=IEEE8021X
+	eap=TTLS
+	phase2="auth=PAP"
+	anonymous_identity="anonymous@example.com"
+	identity="user@example.com"
+	password="secretr"
+	ca_cert="/etc/cert/ca.pem"
+	eapol_flags=0
+	macsec_policy=1
+}
+
+# Example configuration for MACsec with preshared key
+network={
+	key_mgmt=NONE
+	eapol_flags=0
+	macsec_policy=1
+	mka_cak=0123456789ABCDEF0123456789ABCDEF
+	mka_ckn=6162636465666768696A6B6C6D6E6F707172737475767778797A303132333435
+	mka_priority=128
+}