[PATCH] AIRO{,_CS} <-> CRYPTO fixes

CRYPTO is a helper variable, and to make it easier for users, it should
therefore select'ed and not be listed in the dependencies.

drivers/net/wireless/airo.c requires CONFIG_CRYPTO for compilations.

Therefore, AIRO_CS also has to CRYPTO.

Additionally, this patch removes the #ifdef's for the non-compiling
CRYPTO=n case from drivers/net/wireless/airo.c.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/Kconfig

@@ -240,7 +240,8 @@ config IPW2200_DEBUG
 
 config AIRO
 	tristate "Cisco/Aironet 34X/35X/4500/4800 ISA and PCI cards"
-	depends on NET_RADIO && ISA_DMA_API && CRYPTO && (PCI || BROKEN)
+ 	depends on NET_RADIO && ISA_DMA_API && (PCI || BROKEN)
+	select CRYPTO
 	---help---
 	  This is the standard Linux driver to support Cisco/Aironet ISA and
 	  PCI 802.11 wireless cards.
@@ -388,6 +389,7 @@ config PCMCIA_SPECTRUM
 config AIRO_CS
 	tristate "Cisco/Aironet 34X/35X/4500/4800 PCMCIA cards"
 	depends on NET_RADIO && PCMCIA && (BROKEN || !M32R)
+	select CRYPTO
 	---help---
 	  This is the standard Linux driver to support Cisco/Aironet PCMCIA
 	  802.11 wireless cards.  This driver is the same as the Aironet

drivers/net/wireless/airo.c

@@ -36,6 +36,7 @@
 #include <linux/in.h>
 #include <linux/bitops.h>
 #include <linux/scatterlist.h>
+#include <linux/crypto.h>
 #include <asm/io.h>
 #include <asm/system.h>
 
@@ -87,14 +88,6 @@ static struct pci_driver airo_driver = {
 #include <linux/delay.h>
 #endif
 
-/* Support Cisco MIC feature */
-#define MICSUPPORT
-
-#if defined(MICSUPPORT) && !defined(CONFIG_CRYPTO)
-#warning MIC support requires Crypto API
-#undef MICSUPPORT
-#endif
-
 /* Hack to do some power saving */
 #define POWER_ON_DOWN
 
@@ -1118,7 +1111,6 @@ static int readrids(struct net_device *dev, aironet_ioctl *comp);
 static int writerids(struct net_device *dev, aironet_ioctl *comp);
 static int flashcard(struct net_device *dev, aironet_ioctl *comp);
 #endif /* CISCO_EXT */
-#ifdef MICSUPPORT
 static void micinit(struct airo_info *ai);
 static int micsetup(struct airo_info *ai);
 static int encapsulate(struct airo_info *ai, etherHead *pPacket, MICBuffer *buffer, int len);
@@ -1127,9 +1119,6 @@ static int decapsulate(struct airo_info *ai, MICBuffer *mic, etherHead *pPacket,
 static u8 airo_rssi_to_dbm (tdsRssiEntry *rssi_rid, u8 rssi);
 static u8 airo_dbm_to_pct (tdsRssiEntry *rssi_rid, u8 dbm);
 
-#include <linux/crypto.h>
-#endif
-
 struct airo_info {
 	struct net_device_stats	stats;
 	struct net_device             *dev;
@@ -1190,12 +1179,10 @@ struct airo_info {
 	unsigned long		scan_timestamp;	/* Time started to scan */
 	struct iw_spy_data	spy_data;
 	struct iw_public_data	wireless_data;
-#ifdef MICSUPPORT
 	/* MIC stuff */
 	struct crypto_tfm	*tfm;
 	mic_module		mod[2];
 	mic_statistics		micstats;
-#endif
 	HostRxDesc rxfids[MPI_MAX_FIDS]; // rx/tx/config MPI350 descriptors
 	HostTxDesc txfids[MPI_MAX_FIDS];
 	HostRidDesc config_desc;
@@ -1229,7 +1216,6 @@ static int flashgchar(struct airo_info *ai,int matchbyte,int dwelltime);
 static int flashputbuf(struct airo_info *ai);
 static int flashrestart(struct airo_info *ai,struct net_device *dev);
 
-#ifdef MICSUPPORT
 /***********************************************************************
  *                              MIC ROUTINES                           *
  ***********************************************************************
@@ -1686,7 +1672,6 @@ static void emmh32_final(emmh32_context *context, u8 digest[4])
 	digest[2] = (val>>8) & 0xFF;
 	digest[3] = val & 0xFF;
 }
-#endif
 
 static int readBSSListRid(struct airo_info *ai, int first,
 		      BSSListRid *list) {
@@ -2005,7 +1990,6 @@ static int mpi_send_packet (struct net_device *dev)
 	 * Firmware automaticly puts 802 header on so
 	 * we don't need to account for it in the length
 	 */
-#ifdef MICSUPPORT
 	if (test_bit(FLAG_MIC_CAPABLE, &ai->flags) && ai->micstats.enabled &&
 		(ntohs(((u16 *)buffer)[6]) != 0x888E)) {
 		MICBuffer pMic;
@@ -2022,9 +2006,7 @@ static int mpi_send_packet (struct net_device *dev)
 		memcpy (sendbuf, &pMic, sizeof(pMic));
 		sendbuf += sizeof(pMic);
 		memcpy (sendbuf, buffer, len - sizeof(etherHead));
-	} else
-#endif
-	{
+	} else {
 		*payloadLen = cpu_to_le16(len - sizeof(etherHead));
 
 		dev->trans_start = jiffies;
@@ -2400,9 +2382,7 @@ void stop_airo_card( struct net_device *dev, int freeres )
 				ai->shared, ai->shared_dma);
 		}
         }
-#ifdef MICSUPPORT
 	crypto_free_tfm(ai->tfm);
-#endif
 	del_airo_dev( dev );
 	free_netdev( dev );
 }
@@ -2726,9 +2706,7 @@ static struct net_device *_init_airo_card( unsigned short irq, int port,
 	ai->thr_pid = kernel_thread(airo_thread, dev, CLONE_FS | CLONE_FILES);
 	if (ai->thr_pid < 0)
 		goto err_out_free;
-#ifdef MICSUPPORT
 	ai->tfm = NULL;
-#endif
 	rc = add_airo_dev( dev );
 	if (rc)
 		goto err_out_thr;
@@ -2969,10 +2947,8 @@ static int airo_thread(void *data) {
 			airo_read_wireless_stats(ai);
 		else if (test_bit(JOB_PROMISC, &ai->flags))
 			airo_set_promisc(ai);
-#ifdef MICSUPPORT
 		else if (test_bit(JOB_MIC, &ai->flags))
 			micinit(ai);
-#endif
 		else if (test_bit(JOB_EVENT, &ai->flags))
 			airo_send_event(dev);
 		else if (test_bit(JOB_AUTOWEP, &ai->flags))
@@ -3010,12 +2986,10 @@ static irqreturn_t airo_interrupt ( int irq, void* dev_id, struct pt_regs *regs)
 
 		if ( status & EV_MIC ) {
 			OUT4500( apriv, EVACK, EV_MIC );
-#ifdef MICSUPPORT
 			if (test_bit(FLAG_MIC_CAPABLE, &apriv->flags)) {
 				set_bit(JOB_MIC, &apriv->flags);
 				wake_up_interruptible(&apriv->thr_wait);
 			}
-#endif
 		}
 		if ( status & EV_LINK ) {
 			union iwreq_data	wrqu;
@@ -3194,11 +3168,8 @@ static irqreturn_t airo_interrupt ( int irq, void* dev_id, struct pt_regs *regs)
 				}
 				bap_read (apriv, buffer + hdrlen/2, len, BAP0);
 			} else {
-#ifdef MICSUPPORT
 				MICBuffer micbuf;
-#endif
 				bap_read (apriv, buffer, ETH_ALEN*2, BAP0);
-#ifdef MICSUPPORT
 				if (apriv->micstats.enabled) {
 					bap_read (apriv,(u16*)&micbuf,sizeof(micbuf),BAP0);
 					if (ntohs(micbuf.typelen) > 0x05DC)
@@ -3211,15 +3182,10 @@ static irqreturn_t airo_interrupt ( int irq, void* dev_id, struct pt_regs *regs)
 						skb_trim (skb, len + hdrlen);
 					}
 				}
-#endif
 				bap_read(apriv,buffer+ETH_ALEN,len,BAP0);
-#ifdef MICSUPPORT
 				if (decapsulate(apriv,&micbuf,(etherHead*)buffer,len)) {
 badmic:
 					dev_kfree_skb_irq (skb);
-#else
-				if (0) {
-#endif
 badrx:
 					OUT4500( apriv, EVACK, EV_RX);
 					goto exitrx;
@@ -3430,10 +3396,8 @@ static void mpi_receive_802_3(struct airo_info *ai)
 	int len = 0;
 	struct sk_buff *skb;
 	char *buffer;
-#ifdef MICSUPPORT
 	int off = 0;
 	MICBuffer micbuf;
-#endif
 
 	memcpy_fromio(&rxd, ai->rxfids[0].card_ram_off, sizeof(rxd));
 	/* Make sure we got something */
@@ -3448,7 +3412,6 @@ static void mpi_receive_802_3(struct airo_info *ai)
 			goto badrx;
 		}
 		buffer = skb_put(skb,len);
-#ifdef MICSUPPORT
 		memcpy(buffer, ai->rxfids[0].virtual_host_addr, ETH_ALEN * 2);
 		if (ai->micstats.enabled) {
 			memcpy(&micbuf,
@@ -3470,9 +3433,6 @@ badmic:
 			dev_kfree_skb_irq (skb);
 			goto badrx;
 		}
-#else
-		memcpy(buffer, ai->rxfids[0].virtual_host_addr, len);
-#endif
 #ifdef WIRELESS_SPY
 		if (ai->spy_data.spy_number > 0) {
 			char *sa;
@@ -3689,13 +3649,11 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
 		ai->config.authType = AUTH_OPEN;
 		ai->config.modulation = MOD_CCK;
 
-#ifdef MICSUPPORT
 		if ((cap_rid.len>=sizeof(cap_rid)) && (cap_rid.extSoftCap&1) &&
 		    (micsetup(ai) == SUCCESS)) {
 			ai->config.opmode |= MODE_MIC;
 			set_bit(FLAG_MIC_CAPABLE, &ai->flags);
 		}
-#endif
 
 		/* Save off the MAC */
 		for( i = 0; i < ETH_ALEN; i++ ) {
@@ -4170,15 +4128,12 @@ static int transmit_802_3_packet(struct airo_info *ai, int len, char *pPacket)
 	}
 	len -= ETH_ALEN * 2;
 
-#ifdef MICSUPPORT
 	if (test_bit(FLAG_MIC_CAPABLE, &ai->flags) && ai->micstats.enabled && 
 	    (ntohs(((u16 *)pPacket)[6]) != 0x888E)) {
 		if (encapsulate(ai,(etherHead *)pPacket,&pMic,len) != SUCCESS)
 			return ERROR;
 		miclen = sizeof(pMic);
 	}
-#endif
-
 	// packet is destination[6], source[6], payload[len-12]
 	// write the payload length and dst/src/payload
 	if (bap_setup(ai, txFid, 0x0036, BAP1) != SUCCESS) return ERROR;
@@ -7270,13 +7225,11 @@ static int readrids(struct net_device *dev, aironet_ioctl *comp) {
 	case AIROGSTAT:     ridcode = RID_STATUS;       break;
 	case AIROGSTATSD32: ridcode = RID_STATSDELTA;   break;
 	case AIROGSTATSC32: ridcode = RID_STATS;        break;
-#ifdef MICSUPPORT
 	case AIROGMICSTATS:
 		if (copy_to_user(comp->data, &ai->micstats,
 				 min((int)comp->len,(int)sizeof(ai->micstats))))
 			return -EFAULT;
 		return 0;
-#endif
 	case AIRORRID:      ridcode = comp->ridnum;     break;
 	default:
 		return -EINVAL;
@@ -7308,9 +7261,7 @@ static int readrids(struct net_device *dev, aironet_ioctl *comp) {
 static int writerids(struct net_device *dev, aironet_ioctl *comp) {
 	struct airo_info *ai = dev->priv;
 	int  ridcode;
-#ifdef MICSUPPORT
         int  enabled;
-#endif
 	Resp      rsp;
 	static int (* writer)(struct airo_info *, u16 rid, const void *, int, int);
 	unsigned char *iobuf;
@@ -7367,11 +7318,9 @@ static int writerids(struct net_device *dev, aironet_ioctl *comp) {
 
 		PC4500_readrid(ai,RID_STATSDELTACLEAR,iobuf,RIDSIZE, 1);
 
-#ifdef MICSUPPORT
 		enabled = ai->micstats.enabled;
 		memset(&ai->micstats,0,sizeof(ai->micstats));
 		ai->micstats.enabled = enabled;
-#endif
 
 		if (copy_to_user(comp->data, iobuf,
 				 min((int)comp->len, (int)RIDSIZE))) {