[AX25] Introduce ax25_type_trans

Replacing the open coded equivalents and making ax25 look more like
a linux network protocol, i.e. more similar to inet.
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/hamradio/6pack.c

@@ -394,13 +394,11 @@ static void sp_bump(struct sixpack *sp, char cmd)
 	if ((skb = dev_alloc_skb(count)) == NULL)
 		goto out_mem;
 
-	skb->dev = sp->dev;
 	ptr = skb_put(skb, count);
 	*ptr++ = cmd;	/* KISS command */
 
 	memcpy(ptr, sp->cooked_buf + 1, count);
-	skb->mac.raw = skb->data;
-	skb->protocol = htons(ETH_P_AX25);
+	skb->protocol = ax25_type_trans(skb, sp->dev);
 	netif_rx(skb);
 	sp->dev->last_rx = jiffies;
 	sp->stats.rx_packets++;

drivers/net/hamradio/baycom_epp.c

@@ -601,12 +601,10 @@ static void do_rxpacket(struct net_device *dev)
 		bc->stats.rx_dropped++;
 		return;
 	}
-	skb->dev = dev;
 	cp = skb_put(skb, pktlen);
 	*cp++ = 0; /* KISS kludge */
 	memcpy(cp, bc->hdlcrx.buf, pktlen - 1);
-	skb->protocol = htons(ETH_P_AX25);
-	skb->mac.raw = skb->data;
+	skb->protocol = ax25_type_trans(skb, dev);
 	netif_rx(skb);
 	dev->last_rx = jiffies;
 	bc->stats.rx_packets++;

drivers/net/hamradio/bpqether.c

@@ -211,11 +211,7 @@ static int bpq_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_ty
 	ptr = skb_push(skb, 1);
 	*ptr = 0;
 
-	skb->dev = dev;
-	skb->protocol = htons(ETH_P_AX25);
-	skb->mac.raw = skb->data;
-	skb->pkt_type = PACKET_HOST;
-
+	skb->protocol = ax25_type_trans(skb, dev);
 	netif_rx(skb);
 	dev->last_rx = jiffies;
 unlock:
@@ -272,8 +268,6 @@ static int bpq_xmit(struct sk_buff *skb, struct net_device *dev)
 		skb = newskb;
 	}
 
-	skb->protocol = htons(ETH_P_AX25);
-
 	ptr = skb_push(skb, 2);
 
 	*ptr++ = (size + 5) % 256;
@@ -287,7 +281,7 @@ static int bpq_xmit(struct sk_buff *skb, struct net_device *dev)
 		return -ENODEV;
 	}
 
-	skb->dev = dev;
+	skb->protocol = ax25_type_trans(skb, dev);
 	skb->nh.raw = skb->data;
 	dev->hard_header(skb, dev, ETH_P_BPQ, bpq->dest_addr, NULL, 0);
 	bpq->stats.tx_packets++;

drivers/net/hamradio/dmascc.c

@@ -1306,9 +1306,7 @@ static void rx_bh(void *arg)
 			data = skb_put(skb, cb + 1);
 			data[0] = 0;
 			memcpy(&data[1], priv->rx_buf[i], cb);
-			skb->dev = priv->dev;
-			skb->protocol = ntohs(ETH_P_AX25);
-			skb->mac.raw = skb->data;
+			skb->protocol = ax25_type_trans(skb, priv->dev);
 			netif_rx(skb);
 			priv->dev->last_rx = jiffies;
 			priv->stats.rx_packets++;

drivers/net/hamradio/hdlcdrv.c

@@ -174,12 +174,10 @@ static void hdlc_rx_flag(struct net_device *dev, struct hdlcdrv_state *s)
 		s->stats.rx_dropped++;
 		return;
 	}
-	skb->dev = dev;
 	cp = skb_put(skb, pkt_len);
 	*cp++ = 0; /* KISS kludge */
 	memcpy(cp, s->hdlcrx.buffer, pkt_len - 1);
-	skb->protocol = htons(ETH_P_AX25);
-	skb->mac.raw = skb->data;
+	skb->protocol = ax25_type_trans(skb, dev);
 	netif_rx(skb);
 	dev->last_rx = jiffies;
 	s->stats.rx_packets++;

drivers/net/hamradio/mkiss.c

@@ -332,12 +332,10 @@ static void ax_bump(struct ax_disp *ax)
 		return;
 	}
 
-	skb->dev      = ax->dev;
 	spin_lock_bh(&ax->buflock);
 	memcpy(skb_put(skb,count), ax->rbuff, count);
 	spin_unlock_bh(&ax->buflock);
-	skb->mac.raw  = skb->data;
-	skb->protocol = htons(ETH_P_AX25);
+	skb->protocol = ax25_type_trans(skb, ax->dev);
 	netif_rx(skb);
 	ax->dev->last_rx = jiffies;
 	ax->rx_packets++;

drivers/net/hamradio/scc.c

@@ -1630,10 +1630,7 @@ static void scc_net_rx(struct scc_channel *scc, struct sk_buff *skb)
 	scc->dev_stat.rx_packets++;
 	scc->dev_stat.rx_bytes += skb->len;
 
-	skb->dev      = scc->dev;
-	skb->protocol = htons(ETH_P_AX25);
-	skb->mac.raw  = skb->data;
-	skb->pkt_type = PACKET_HOST;
+	skb->protocol = ax25_type_trans(skb, scc->dev);
 	
 	netif_rx(skb);
 	scc->dev->last_rx = jiffies;

drivers/net/hamradio/yam.c

@@ -522,12 +522,10 @@ static inline void yam_rx_flag(struct net_device *dev, struct yam_port *yp)
 				++yp->stats.rx_dropped;
 			} else {
 				unsigned char *cp;
-				skb->dev = dev;
 				cp = skb_put(skb, pkt_len);
 				*cp++ = 0;		/* KISS kludge */
 				memcpy(cp, yp->rx_buf, pkt_len - 1);
-				skb->protocol = htons(ETH_P_AX25);
-				skb->mac.raw = skb->data;
+				skb->protocol = ax25_type_trans(skb, dev);
 				netif_rx(skb);
 				dev->last_rx = jiffies;
 				++yp->stats.rx_packets;

include/net/ax25.h

@@ -220,6 +220,14 @@ static __inline__ void ax25_cb_put(ax25_cb *ax25)
 	}
 }
 
+static inline unsigned short ax25_type_trans(struct sk_buff *skb, struct net_device *dev)
+{
+	skb->dev      = dev;
+	skb->pkt_type = PACKET_HOST;
+	skb->mac.raw  = skb->data;
+	return htons(ETH_P_AX25);
+}
+
 /* af_ax25.c */
 extern struct hlist_head ax25_list;
 extern spinlock_t ax25_list_lock;

net/ax25/ax25_ds_subr.c

@@ -143,8 +143,7 @@ static void ax25_kiss_cmd(ax25_dev *ax25_dev, unsigned char cmd, unsigned char p
 	*p++ = cmd;
 	*p++ = param;
 
-	skb->dev      = ax25_dev->dev;
-	skb->protocol = htons(ETH_P_AX25);
+	skb->protocol = ax25_type_trans(skb, ax25_dev->dev);
 
 	dev_queue_xmit(skb);
 }

net/ax25/ax25_out.c

@@ -351,8 +351,7 @@ void ax25_queue_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	unsigned char *ptr;
 
-	skb->protocol = htons(ETH_P_AX25);
-	skb->dev      = ax25_fwd_dev(dev);
+	skb->protocol = ax25_type_trans(skb, ax25_fwd_dev(dev));
 
 	ptr  = skb_push(skb, 1);
 	*ptr = 0x00;			/* KISS */