Replace CONFIG_NO_AES_EXTRAS with auto-detection during build

There is no need to do this manually since it is possible to figure
out automatically which AES extra files need to be included in the
build.

hostapd/Makefile

@@ -190,6 +190,7 @@ ifdef CONFIG_EAP_SIM
 CFLAGS += -DEAP_SERVER_SIM
 OBJS += ../src/eap_server/eap_sim.o
 CONFIG_EAP_SIM_COMMON=y
+NEED_AES_CBC=y
 endif
 
 ifdef CONFIG_EAP_AKA
@@ -197,6 +198,7 @@ CFLAGS += -DEAP_SERVER_AKA
 OBJS += ../src/eap_server/eap_aka.o
 CONFIG_EAP_SIM_COMMON=y
 NEED_SHA256=y
+NEED_AES_CBC=y
 endif
 
 ifdef CONFIG_EAP_AKA_PRIME
@@ -220,6 +222,9 @@ endif
 ifdef CONFIG_EAP_PSK
 CFLAGS += -DEAP_SERVER_PSK
 OBJS += ../src/eap_server/eap_psk.o ../src/eap_common/eap_psk_common.o
+NEED_AES_OMAC1=y
+NEED_AES_ENCBLOCK=y
+NEED_AES_EAX=y
 endif
 
 ifdef CONFIG_EAP_SAKE
@@ -234,6 +239,7 @@ ifdef CONFIG_EAP_GPSK_SHA256
 CFLAGS += -DEAP_SERVER_GPSK_SHA256
 endif
 NEED_SHA256=y
+NEED_AES_OMAC1=y
 endif
 
 ifdef CONFIG_EAP_VENDOR_TEST
@@ -518,13 +524,20 @@ AESOBJS += ../src/crypto/aes-internal.o ../src/crypto/aes-internal-enc.o
 endif
 
 AESOBJS += ../src/crypto/aes-wrap.o
-ifndef CONFIG_NO_AES_EXTRAS
-NEED_AES_CBC=y
-AESOBJS += ../src/crypto/aes-cbc.o
-AESOBJS += ../src/crypto/aes-ctr.o
+ifdef NEED_AES_EAX
 AESOBJS += ../src/crypto/aes-eax.o
+NEED_AES_CTR=y
+endif
+ifdef NEED_AES_CTR
+AESOBJS += ../src/crypto/aes-ctr.o
+endif
+ifdef NEED_AES_ENCBLOCK
 AESOBJS += ../src/crypto/aes-encblock.o
+endif
+ifdef NEED_AES_OMAC1
 AESOBJS += ../src/crypto/aes-omac1.o
+endif
+ifdef NEED_AES_UNWRAP
 AESOBJS += ../src/crypto/aes-unwrap.o
 endif
 ifdef NEED_AES_CBC

wpa_supplicant/Makefile

@@ -320,6 +320,7 @@ OBJS_h += ../src/eap_server/eap_sim.o
 endif
 CONFIG_IEEE8021X_EAPOL=y
 CONFIG_EAP_SIM_COMMON=y
+NEED_AES_CBC=y
 endif
 
 ifdef CONFIG_EAP_LEAP
@@ -347,6 +348,9 @@ OBJS_h += ../src/eap_server/eap_psk.o
 endif
 CONFIG_IEEE8021X_EAPOL=y
 NEED_AES=y
+NEED_AES_OMAC1=y
+NEED_AES_ENCBLOCK=y
+NEED_AES_EAX=y
 endif
 
 ifdef CONFIG_EAP_AKA
@@ -361,6 +365,7 @@ OBJS_h += ../src/eap_server/eap_aka.o
 endif
 CONFIG_IEEE8021X_EAPOL=y
 CONFIG_EAP_SIM_COMMON=y
+NEED_AES_CBC=y
 endif
 
 ifdef CONFIG_EAP_AKA_PRIME
@@ -438,6 +443,7 @@ ifdef CONFIG_EAP_GPSK_SHA256
 CFLAGS += -DEAP_GPSK_SHA256
 endif
 NEED_SHA256=y
+NEED_AES_OMAC1=y
 endif
 
 ifdef CONFIG_WPS
@@ -869,12 +875,20 @@ AESOBJS += ../src/crypto/aes-internal.o ../src/crypto/aes-internal-dec.o
 endif
 
 AESOBJS += ../src/crypto/aes-unwrap.o
-ifndef CONFIG_NO_AES_EXTRAS
-NEED_AES_CBC=y
-AESOBJS += ../src/crypto/aes-ctr.o
+ifdef NEED_AES_EAX
 AESOBJS += ../src/crypto/aes-eax.o
+NEED_AES_CTR=y
+endif
+ifdef NEED_AES_CTR
+AESOBJS += ../src/crypto/aes-ctr.o
+endif
+ifdef NEED_AES_ENCBLOCK
 AESOBJS += ../src/crypto/aes-encblock.o
+endif
+ifdef NEED_AES_OMAC1
 AESOBJS += ../src/crypto/aes-omac1.o
+endif
+ifdef NEED_AES_WRAP
 AESOBJS += ../src/crypto/aes-wrap.o
 endif
 ifdef NEED_AES_CBC

wpa_supplicant/defconfig

@@ -243,11 +243,6 @@ CONFIG_CTRL_IFACE=y
 # wpa_passphrase). This saves about 0.5 kB in code size.
 #CONFIG_NO_WPA_PASSPHRASE=y
 
-# Remove AES extra functions. This can be used to reduce code size by about
-# 1.5 kB by removing extra AES modes that are not needed for commonly used
-# client configurations (they are needed for some EAP types).
-#CONFIG_NO_AES_EXTRAS=y
-
 # Disable scan result processing (ap_mode=1) to save code size by about 1 kB.
 # This can be used if ap_scan=1 mode is never enabled.
 #CONFIG_NO_SCAN_PROCESSING=y