[NET]: Undo code bloat in hot paths due to print_mac().

If print_mac() is used inside of a pr_debug() the compiler
can't see that the call is redundant so still performs it
even of pr_debug() ends up being a nop.

So don't use print_mac() in such cases in hot code paths,
use MAC_FMT et al. instead.

As noted by Joe Perches, pr_debug() could be modified to
handle this better, but that is a change to an interface
used by the entire kernel and thus needs to be validated
carefully.  This here is thus the less risky fix for
2.6.25
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/starfire.c

@@ -1472,13 +1472,12 @@ static int __netdev_rx(struct net_device *dev, int *quota)
 #ifndef final_version			/* Remove after testing. */
 		/* You will want this info for the initial debug. */
 		if (debug > 5) {
-			DECLARE_MAC_BUF(mac);
-			DECLARE_MAC_BUF(mac2);
-
-			printk(KERN_DEBUG "  Rx data %s %s"
+			printk(KERN_DEBUG "  Rx data " MAC_FMT " " MAC_FMT
 			       " %2.2x%2.2x.\n",
-			       print_mac(mac, &skb->data[0]),
-			       print_mac(mac2, &skb->data[6]),
+			       skb->data[0], skb->data[1], skb->data[2],
+			       skb->data[3], skb->data[4], skb->data[5],
+			       skb->data[6], skb->data[7], skb->data[8],
+			       skb->data[9], skb->data[10], skb->data[11],
 			       skb->data[12], skb->data[13]);
 		}
 #endif

drivers/net/tokenring/olympic.c

@@ -1438,13 +1438,18 @@ static void olympic_arb_cmd(struct net_device *dev)
 
 		if (olympic_priv->olympic_network_monitor) { 
 			struct trh_hdr *mac_hdr;
-			DECLARE_MAC_BUF(mac);
 			printk(KERN_WARNING "%s: Received MAC Frame, details: \n",dev->name);
 			mac_hdr = tr_hdr(mac_frame);
-			printk(KERN_WARNING "%s: MAC Frame Dest. Addr: %s\n",
-			       dev->name, print_mac(mac, mac_hdr->daddr));
-			printk(KERN_WARNING "%s: MAC Frame Srce. Addr: %s\n",
-			       dev->name, print_mac(mac, mac_hdr->saddr));
+			printk(KERN_WARNING "%s: MAC Frame Dest. Addr: "
+			       MAC_FMT " \n", dev->name,
+			       mac_hdr->daddr[0], mac_hdr->daddr[1],
+			       mac_hdr->daddr[2], mac_hdr->daddr[3],
+			       mac_hdr->daddr[4], mac_hdr->daddr[5]);
+			printk(KERN_WARNING "%s: MAC Frame Srce. Addr: "
+			       MAC_FMT " \n", dev->name,
+			       mac_hdr->saddr[0], mac_hdr->saddr[1],
+			       mac_hdr->saddr[2], mac_hdr->saddr[3],
+			       mac_hdr->saddr[4], mac_hdr->saddr[5]);
 		}
 		netif_rx(mac_frame);
 		dev->last_rx = jiffies;

drivers/net/virtio_net.c

@@ -234,11 +234,12 @@ static int start_xmit(struct sk_buff *skb, struct net_device *dev)
 	struct scatterlist sg[1+MAX_SKB_FRAGS];
 	struct virtio_net_hdr *hdr;
 	const unsigned char *dest = ((struct ethhdr *)skb->data)->h_dest;
-	DECLARE_MAC_BUF(mac);
 
 	sg_init_table(sg, 1+MAX_SKB_FRAGS);
 
-	pr_debug("%s: xmit %p %s\n", dev->name, skb, print_mac(mac, dest));
+	pr_debug("%s: xmit %p " MAC_FMT "\n", dev->name, skb,
+		 dest[0], dest[1], dest[2],
+		 dest[3], dest[4], dest[5]);
 
 	/* Encode metadata header at front. */
 	hdr = skb_vnet_hdr(skb);

drivers/net/wireless/hostap/hostap_80211_rx.c

@@ -635,7 +635,6 @@ hostap_rx_frame_decrypt(local_info_t *local, struct sk_buff *skb,
 {
 	struct ieee80211_hdr_4addr *hdr;
 	int res, hdrlen;
-	DECLARE_MAC_BUF(mac);
 
 	if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
 		return 0;
@@ -647,8 +646,10 @@ hostap_rx_frame_decrypt(local_info_t *local, struct sk_buff *skb,
 	    strcmp(crypt->ops->name, "TKIP") == 0) {
 		if (net_ratelimit()) {
 			printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
-			       "received packet from %s\n",
-			       local->dev->name, print_mac(mac, hdr->addr2));
+			       "received packet from " MAC_FMT "\n",
+			       local->dev->name,
+			       hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+			       hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
 		}
 		return -1;
 	}
@@ -657,9 +658,12 @@ hostap_rx_frame_decrypt(local_info_t *local, struct sk_buff *skb,
 	res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
 	atomic_dec(&crypt->refcnt);
 	if (res < 0) {
-		printk(KERN_DEBUG "%s: decryption failed (SA=%s"
+		printk(KERN_DEBUG "%s: decryption failed (SA=" MAC_FMT
 		       ") res=%d\n",
-		       local->dev->name, print_mac(mac, hdr->addr2), res);
+		       local->dev->name,
+		       hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+		       hdr->addr2[3], hdr->addr2[4], hdr->addr2[5],
+		       res);
 		local->comm_tallies.rx_discards_wep_undecryptable++;
 		return -1;
 	}
@@ -721,7 +725,6 @@ void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
 	struct ieee80211_crypt_data *crypt = NULL;
 	void *sta = NULL;
 	int keyidx = 0;
-	DECLARE_MAC_BUF(mac);
 
 	iface = netdev_priv(dev);
 	local = iface->local;
@@ -798,8 +801,10 @@ void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
 			 * frames silently instead of filling system log with
 			 * these reports. */
 			printk(KERN_DEBUG "%s: WEP decryption failed (not set)"
-			       " (SA=%s)\n",
-			       local->dev->name, print_mac(mac, hdr->addr2));
+			       " (SA=" MAC_FMT ")\n",
+			       local->dev->name,
+			       hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+			       hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
 #endif
 			local->comm_tallies.rx_discards_wep_undecryptable++;
 			goto rx_dropped;
@@ -813,8 +818,9 @@ void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
 		    (keyidx = hostap_rx_frame_decrypt(local, skb, crypt)) < 0)
 		{
 			printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth "
-			       "from %s\n", dev->name,
-			       print_mac(mac, hdr->addr2));
+			       "from " MAC_FMT "\n", dev->name,
+			       hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+			       hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
 			/* TODO: could inform hostapd about this so that it
 			 * could send auth failure report */
 			goto rx_dropped;
@@ -982,8 +988,10 @@ void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
 			       "unencrypted EAPOL frame\n", local->dev->name);
 		} else {
 			printk(KERN_DEBUG "%s: encryption configured, but RX "
-			       "frame not encrypted (SA=%s)\n",
-			       local->dev->name, print_mac(mac, hdr->addr2));
+			       "frame not encrypted (SA=" MAC_FMT ")\n",
+			       local->dev->name,
+			       hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+			       hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
 			goto rx_dropped;
 		}
 	}
@@ -992,9 +1000,10 @@ void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
 	    !hostap_is_eapol_frame(local, skb)) {
 		if (net_ratelimit()) {
 			printk(KERN_DEBUG "%s: dropped unencrypted RX data "
-			       "frame from %s"
-			       " (drop_unencrypted=1)\n",
-			       dev->name, print_mac(mac, hdr->addr2));
+			       "frame from " MAC_FMT " (drop_unencrypted=1)\n",
+			       dev->name,
+			       hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+			       hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
 		}
 		goto rx_dropped;
 	}

drivers/net/wireless/hostap/hostap_80211_tx.c

@@ -314,7 +314,6 @@ static struct sk_buff * hostap_tx_encrypt(struct sk_buff *skb,
 	struct ieee80211_hdr_4addr *hdr;
 	u16 fc;
 	int prefix_len, postfix_len, hdr_len, res;
-	DECLARE_MAC_BUF(mac);
 
 	iface = netdev_priv(skb->dev);
 	local = iface->local;
@@ -329,8 +328,10 @@ static struct sk_buff * hostap_tx_encrypt(struct sk_buff *skb,
 		hdr = (struct ieee80211_hdr_4addr *) skb->data;
 		if (net_ratelimit()) {
 			printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
-			       "TX packet to %s\n",
-			       local->dev->name, print_mac(mac, hdr->addr1));
+			       "TX packet to " MAC_FMT "\n",
+			       local->dev->name,
+			       hdr->addr1[0], hdr->addr1[1], hdr->addr1[2],
+			       hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]);
 		}
 		kfree_skb(skb);
 		return NULL;

drivers/net/wireless/ipw2200.c

@@ -10192,7 +10192,6 @@ static int ipw_tx_skb(struct ipw_priv *priv, struct ieee80211_txb *txb,
 	u8 id, hdr_len, unicast;
 	u16 remaining_bytes;
 	int fc;
-	DECLARE_MAC_BUF(mac);
 
 	hdr_len = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
 	switch (priv->ieee->iw_mode) {
@@ -10203,8 +10202,10 @@ static int ipw_tx_skb(struct ipw_priv *priv, struct ieee80211_txb *txb,
 			id = ipw_add_station(priv, hdr->addr1);
 			if (id == IPW_INVALID_STATION) {
 				IPW_WARNING("Attempt to send data to "
-					    "invalid cell: %s\n",
-					    print_mac(mac, hdr->addr1));
+					    "invalid cell: " MAC_FMT "\n",
+					    hdr->addr1[0], hdr->addr1[1],
+					    hdr->addr1[2], hdr->addr1[3],
+					    hdr->addr1[4], hdr->addr1[5]);
 				goto drop;
 			}
 		}

net/atm/lec.c

@@ -266,7 +266,6 @@ static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	char buf[300];
 	int i = 0;
 #endif /* DUMP_PACKETS >0 */
-	DECLARE_MAC_BUF(mac);
 
 	pr_debug("lec_start_xmit called\n");
 	if (!priv->lecd) {
@@ -374,15 +373,19 @@ static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		if (entry && (entry->tx_wait.qlen < LEC_UNRES_QUE_LEN)) {
 			pr_debug("%s:lec_start_xmit: queuing packet, ",
 				dev->name);
-			pr_debug("MAC address %s\n",
-				 print_mac(mac, lec_h->h_dest));
+			pr_debug("MAC address " MAC_FMT "\n",
+				 lec_h->h_dest[0], lec_h->h_dest[1],
+				 lec_h->h_dest[2], lec_h->h_dest[3],
+				 lec_h->h_dest[4], lec_h->h_dest[5]);
 			skb_queue_tail(&entry->tx_wait, skb);
 		} else {
 			pr_debug
 			    ("%s:lec_start_xmit: tx queue full or no arp entry, dropping, ",
 			     dev->name);
-			pr_debug("MAC address %s\n",
-				 print_mac(mac, lec_h->h_dest));
+			pr_debug("MAC address " MAC_FMT "\n",
+				 lec_h->h_dest[0], lec_h->h_dest[1],
+				 lec_h->h_dest[2], lec_h->h_dest[3],
+				 lec_h->h_dest[4], lec_h->h_dest[5]);
 			priv->stats.tx_dropped++;
 			dev_kfree_skb(skb);
 		}
@@ -394,8 +397,10 @@ static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	while (entry && (skb2 = skb_dequeue(&entry->tx_wait))) {
 		pr_debug("lec.c: emptying tx queue, ");
-		pr_debug("MAC address %s\n",
-			 print_mac(mac, lec_h->h_dest));
+		pr_debug("MAC address " MAC_FMT "\n",
+			 lec_h->h_dest[0], lec_h->h_dest[1],
+			 lec_h->h_dest[2], lec_h->h_dest[3],
+			 lec_h->h_dest[4], lec_h->h_dest[5]);
 		lec_send(vcc, skb2, priv);
 	}
 
@@ -449,7 +454,6 @@ static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
 	struct lec_arp_table *entry;
 	int i;
 	char *tmp;		/* FIXME */
-	DECLARE_MAC_BUF(mac);
 
 	atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
 	mesg = (struct atmlec_msg *)skb->data;
@@ -536,9 +540,14 @@ static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
 			struct net_bridge_fdb_entry *f;
 
 			pr_debug
-			    ("%s: bridge zeppelin asks about %s\n",
+			    ("%s: bridge zeppelin asks about " MAC_FMT "\n",
 			     dev->name,
-			     print_mac(mac, mesg->content.proxy.mac_addr));
+			     mesg->content.proxy.mac_addr[0],
+			     mesg->content.proxy.mac_addr[1],
+			     mesg->content.proxy.mac_addr[2],
+			     mesg->content.proxy.mac_addr[3],
+			     mesg->content.proxy.mac_addr[4],
+			     mesg->content.proxy.mac_addr[5]);
 
 			if (br_fdb_get_hook == NULL || dev->br_port == NULL)
 				break;

net/ieee80211/ieee80211_rx.c

@@ -271,7 +271,6 @@ ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb,
 {
 	struct ieee80211_hdr_3addr *hdr;
 	int res, hdrlen;
-	DECLARE_MAC_BUF(mac);
 
 	if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
 		return 0;
@@ -283,8 +282,12 @@ ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb,
 	res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
 	atomic_dec(&crypt->refcnt);
 	if (res < 0) {
-		IEEE80211_DEBUG_DROP("decryption failed (SA=%s"
-				     ") res=%d\n", print_mac(mac, hdr->addr2), res);
+		IEEE80211_DEBUG_DROP("decryption failed (SA=" MAC_FMT
+				     ") res=%d\n",
+				     hdr->addr2[0], hdr->addr2[1],
+				     hdr->addr2[2], hdr->addr2[3],
+				     hdr->addr2[4], hdr->addr2[5],
+				     res);
 		if (res == -2)
 			IEEE80211_DEBUG_DROP("Decryption failed ICV "
 					     "mismatch (key %d)\n",
@@ -304,7 +307,6 @@ ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee,
 {
 	struct ieee80211_hdr_3addr *hdr;
 	int res, hdrlen;
-	DECLARE_MAC_BUF(mac);
 
 	if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
 		return 0;
@@ -317,8 +319,12 @@ ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee,
 	atomic_dec(&crypt->refcnt);
 	if (res < 0) {
 		printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
-		       " (SA=%s keyidx=%d)\n",
-		       ieee->dev->name, print_mac(mac, hdr->addr2), keyidx);
+		       " (SA=" MAC_FMT " keyidx=%d)\n",
+		       ieee->dev->name,
+		       hdr->addr2[0], hdr->addr2[1],
+		       hdr->addr2[2], hdr->addr2[3],
+		       hdr->addr2[4], hdr->addr2[5],
+		       keyidx);
 		return -1;
 	}
 
@@ -462,8 +468,10 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 			 * frames silently instead of filling system log with
 			 * these reports. */
 			IEEE80211_DEBUG_DROP("Decryption failed (not set)"
-					     " (SA=%s)\n",
-					     print_mac(mac, hdr->addr2));
+					     " (SA=" MAC_FMT ")\n",
+					     hdr->addr2[0], hdr->addr2[1],
+					     hdr->addr2[2], hdr->addr2[3],
+					     hdr->addr2[4], hdr->addr2[5]);
 			ieee->ieee_stats.rx_discards_undecryptable++;
 			goto rx_dropped;
 		}
@@ -474,8 +482,10 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 		    fc & IEEE80211_FCTL_PROTECTED && ieee->host_decrypt &&
 		    (keyidx = hostap_rx_frame_decrypt(ieee, skb, crypt)) < 0) {
 			printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth "
-			       "from %s\n", dev->name,
-			       print_mac(mac, hdr->addr2));
+			       "from " MAC_FMT "\n", dev->name,
+			       hdr->addr2[0], hdr->addr2[1],
+			       hdr->addr2[2], hdr->addr2[3],
+			       hdr->addr2[4], hdr->addr2[5]);
 			/* TODO: could inform hostapd about this so that it
 			 * could send auth failure report */
 			goto rx_dropped;
@@ -653,8 +663,11 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 			 * configured */
 		} else {
 			IEEE80211_DEBUG_DROP("encryption configured, but RX "
-					     "frame not encrypted (SA=%s"
-					     ")\n", print_mac(mac, hdr->addr2));
+					     "frame not encrypted (SA="
+					     MAC_FMT ")\n",
+					     hdr->addr2[0], hdr->addr2[1],
+					     hdr->addr2[2], hdr->addr2[3],
+					     hdr->addr2[4], hdr->addr2[5]);
 			goto rx_dropped;
 		}
 	}
@@ -662,9 +675,11 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 	if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep &&
 	    !ieee80211_is_eapol_frame(ieee, skb)) {
 		IEEE80211_DEBUG_DROP("dropped unencrypted RX data "
-				     "frame from %s"
+				     "frame from " MAC_FMT
 				     " (drop_unencrypted=1)\n",
-				     print_mac(mac, hdr->addr2));
+				     hdr->addr2[0], hdr->addr2[1],
+				     hdr->addr2[2], hdr->addr2[3],
+				     hdr->addr2[4], hdr->addr2[5]);
 		goto rx_dropped;
 	}