net/hsr: Better variable names and update of contact info.

Signed-off-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 103 insertions, 104 deletions

diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index e5302b7f7ca9..4dc2a4207ee2 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -1,4 +1,4 @@
-/* Copyright 2011-2013 Autronica Fire and Security AS
+/* Copyright 2011-2014 Autronica Fire and Security AS
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
@@ -6,7 +6,7 @@
  * any later version.
  *
  * Author(s):
- *	2011-2013 Arvid Brodin, arvid.brodin@xdin.com
+ *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
  *
  * This file contains device methods for creating, using and destroying
  * virtual HSR devices.
@@ -71,49 +71,49 @@ void hsr_set_carrier(struct net_device *hsr_dev, struct net_device *slave1,
 
 void hsr_check_announce(struct net_device *hsr_dev, int old_operstate)
 {
-	struct hsr_priv *hsr_priv;
+	struct hsr_priv *hsr;
 
-	hsr_priv = netdev_priv(hsr_dev);
+	hsr = netdev_priv(hsr_dev);
 
 	if ((hsr_dev->operstate == IF_OPER_UP) && (old_operstate != IF_OPER_UP)) {
 		/* Went up */
-		hsr_priv->announce_count = 0;
-		hsr_priv->announce_timer.expires = jiffies +
+		hsr->announce_count = 0;
+		hsr->announce_timer.expires = jiffies +
 				msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL);
-		add_timer(&hsr_priv->announce_timer);
+		add_timer(&hsr->announce_timer);
 	}
 
 	if ((hsr_dev->operstate != IF_OPER_UP) && (old_operstate == IF_OPER_UP))
 		/* Went down */
-		del_timer(&hsr_priv->announce_timer);
+		del_timer(&hsr->announce_timer);
 }
 
 
-int hsr_get_max_mtu(struct hsr_priv *hsr_priv)
+int hsr_get_max_mtu(struct hsr_priv *hsr)
 {
 	int mtu_max;
 
-	if (hsr_priv->slave[0] && hsr_priv->slave[1])
-		mtu_max = min(hsr_priv->slave[0]->mtu, hsr_priv->slave[1]->mtu);
-	else if (hsr_priv->slave[0])
-		mtu_max = hsr_priv->slave[0]->mtu;
-	else if (hsr_priv->slave[1])
-		mtu_max = hsr_priv->slave[1]->mtu;
+	if (hsr->slave[0] && hsr->slave[1])
+		mtu_max = min(hsr->slave[0]->mtu, hsr->slave[1]->mtu);
+	else if (hsr->slave[0])
+		mtu_max = hsr->slave[0]->mtu;
+	else if (hsr->slave[1])
+		mtu_max = hsr->slave[1]->mtu;
 	else
-		mtu_max = HSR_TAGLEN;
+		mtu_max = HSR_HLEN;
 
-	return mtu_max - HSR_TAGLEN;
+	return mtu_max - HSR_HLEN;
 }
 
 static int hsr_dev_change_mtu(struct net_device *dev, int new_mtu)
 {
-	struct hsr_priv *hsr_priv;
+	struct hsr_priv *hsr;
 
-	hsr_priv = netdev_priv(dev);
+	hsr = netdev_priv(dev);
 
-	if (new_mtu > hsr_get_max_mtu(hsr_priv)) {
-		netdev_info(hsr_priv->dev, "A HSR master's MTU cannot be greater than the smallest MTU of its slaves minus the HSR Tag length (%d octets).\n",
-			    HSR_TAGLEN);
+	if (new_mtu > hsr_get_max_mtu(hsr)) {
+		netdev_info(hsr->dev, "A HSR master's MTU cannot be greater than the smallest MTU of its slaves minus the HSR Tag length (%d octets).\n",
+			    HSR_HLEN);
 		return -EINVAL;
 	}
 
@@ -124,19 +124,19 @@ static int hsr_dev_change_mtu(struct net_device *dev, int new_mtu)
 
 static int hsr_dev_open(struct net_device *dev)
 {
-	struct hsr_priv *hsr_priv;
+	struct hsr_priv *hsr;
 	int i;
 	char *slave_name;
 
-	hsr_priv = netdev_priv(dev);
+	hsr = netdev_priv(dev);
 
 	for (i = 0; i < HSR_MAX_SLAVE; i++) {
-		if (hsr_priv->slave[i])
-			slave_name = hsr_priv->slave[i]->name;
+		if (hsr->slave[i])
+			slave_name = hsr->slave[i]->name;
 		else
 			slave_name = "null";
 
-		if (!is_slave_up(hsr_priv->slave[i]))
+		if (!is_slave_up(hsr->slave[i]))
 			netdev_warn(dev, "Slave %c (%s) is not up; please bring it up to get a working HSR network\n",
 				    'A' + i, slave_name);
 	}
@@ -156,7 +156,7 @@ static int hsr_dev_close(struct net_device *dev)
 }
 
 
-static void hsr_fill_tag(struct hsr_ethhdr *hsr_ethhdr, struct hsr_priv *hsr_priv)
+static void hsr_fill_tag(struct hsr_ethhdr *hsr_ethhdr, struct hsr_priv *hsr)
 {
 	unsigned long irqflags;
 
@@ -185,26 +185,26 @@ static void hsr_fill_tag(struct hsr_ethhdr *hsr_ethhdr, struct hsr_priv *hsr_pri
 	 */
 	set_hsr_tag_LSDU_size(&hsr_ethhdr->hsr_tag, 0);
 
-	spin_lock_irqsave(&hsr_priv->seqnr_lock, irqflags);
-	hsr_ethhdr->hsr_tag.sequence_nr = htons(hsr_priv->sequence_nr);
-	hsr_priv->sequence_nr++;
-	spin_unlock_irqrestore(&hsr_priv->seqnr_lock, irqflags);
+	spin_lock_irqsave(&hsr->seqnr_lock, irqflags);
+	hsr_ethhdr->hsr_tag.sequence_nr = htons(hsr->sequence_nr);
+	hsr->sequence_nr++;
+	spin_unlock_irqrestore(&hsr->seqnr_lock, irqflags);
 
 	hsr_ethhdr->hsr_tag.encap_proto = hsr_ethhdr->ethhdr.h_proto;
 
 	hsr_ethhdr->ethhdr.h_proto = htons(ETH_P_PRP);
 }
 
-static int slave_xmit(struct sk_buff *skb, struct hsr_priv *hsr_priv,
+static int slave_xmit(struct sk_buff *skb, struct hsr_priv *hsr,
 		      enum hsr_dev_idx dev_idx)
 {
 	struct hsr_ethhdr *hsr_ethhdr;
 
 	hsr_ethhdr = (struct hsr_ethhdr *) skb->data;
 
-	skb->dev = hsr_priv->slave[dev_idx];
+	skb->dev = hsr->slave[dev_idx];
 
-	hsr_addr_subst_dest(hsr_priv, &hsr_ethhdr->ethhdr, dev_idx);
+	hsr_addr_subst_dest(hsr, &hsr_ethhdr->ethhdr, dev_idx);
 
 	/* Address substitution (IEC62439-3 pp 26, 50): replace mac
 	 * address of outgoing frame with that of the outgoing slave's.
@@ -217,36 +217,36 @@ static int slave_xmit(struct sk_buff *skb, struct hsr_priv *hsr_priv,
 
 static int hsr_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 {
-	struct hsr_priv *hsr_priv;
+	struct hsr_priv *hsr;
 	struct hsr_ethhdr *hsr_ethhdr;
 	struct sk_buff *skb2;
 	int res1, res2;
 
-	hsr_priv = netdev_priv(dev);
+	hsr = netdev_priv(dev);
 	hsr_ethhdr = (struct hsr_ethhdr *) skb->data;
 
 	if ((skb->protocol != htons(ETH_P_PRP)) ||
 	    (hsr_ethhdr->ethhdr.h_proto != htons(ETH_P_PRP))) {
-		hsr_fill_tag(hsr_ethhdr, hsr_priv);
+		hsr_fill_tag(hsr_ethhdr, hsr);
 		skb->protocol = htons(ETH_P_PRP);
 	}
 
 	skb2 = pskb_copy(skb, GFP_ATOMIC);
 
 	res1 = NET_XMIT_DROP;
-	if (likely(hsr_priv->slave[HSR_DEV_SLAVE_A]))
-		res1 = slave_xmit(skb, hsr_priv, HSR_DEV_SLAVE_A);
+	if (likely(hsr->slave[HSR_DEV_SLAVE_A]))
+		res1 = slave_xmit(skb, hsr, HSR_DEV_SLAVE_A);
 
 	res2 = NET_XMIT_DROP;
-	if (likely(skb2 && hsr_priv->slave[HSR_DEV_SLAVE_B]))
-		res2 = slave_xmit(skb2, hsr_priv, HSR_DEV_SLAVE_B);
+	if (likely(skb2 && hsr->slave[HSR_DEV_SLAVE_B]))
+		res2 = slave_xmit(skb2, hsr, HSR_DEV_SLAVE_B);
 
 	if (likely(res1 == NET_XMIT_SUCCESS || res1 == NET_XMIT_CN ||
 		   res2 == NET_XMIT_SUCCESS || res2 == NET_XMIT_CN)) {
-		hsr_priv->dev->stats.tx_packets++;
-		hsr_priv->dev->stats.tx_bytes += skb->len;
+		hsr->dev->stats.tx_packets++;
+		hsr->dev->stats.tx_bytes += skb->len;
 	} else {
-		hsr_priv->dev->stats.tx_dropped++;
+		hsr->dev->stats.tx_dropped++;
 	}
 
 	return NETDEV_TX_OK;
@@ -262,21 +262,21 @@ static int hsr_header_create(struct sk_buff *skb, struct net_device *dev,
 	/* Make room for the HSR tag now. We will fill it in later (in
 	 * hsr_dev_xmit)
 	 */
-	if (skb_headroom(skb) < HSR_TAGLEN + ETH_HLEN)
+	if (skb_headroom(skb) < HSR_HLEN + ETH_HLEN)
 		return -ENOBUFS;
-	skb_push(skb, HSR_TAGLEN);
+	skb_push(skb, HSR_HLEN);
 
 	/* To allow VLAN/HSR combos we should probably use
-	 * res = dev_hard_header(skb, dev, type, daddr, saddr, len + HSR_TAGLEN);
+	 * res = dev_hard_header(skb, dev, type, daddr, saddr, len + HSR_HLEN);
 	 * here instead. It would require other changes too, though - e.g.
 	 * separate headers for each slave etc...
 	 */
-	res = eth_header(skb, dev, type, daddr, saddr, len + HSR_TAGLEN);
+	res = eth_header(skb, dev, type, daddr, saddr, len + HSR_HLEN);
 	if (res <= 0)
 		return res;
 	skb_reset_mac_header(skb);
 
-	return res + HSR_TAGLEN;
+	return res + HSR_HLEN;
 }
 
 
@@ -291,7 +291,7 @@ static const struct header_ops hsr_header_ops = {
  */
 static int hsr_pad(int size)
 {
-	const int min_size = ETH_ZLEN - HSR_TAGLEN - ETH_HLEN;
+	const int min_size = ETH_ZLEN - HSR_HLEN - ETH_HLEN;
 
 	if (size >= min_size)
 		return size;
@@ -300,7 +300,7 @@ static int hsr_pad(int size)
 
 static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
 {
-	struct hsr_priv *hsr_priv;
+	struct hsr_priv *hsr;
 	struct sk_buff *skb;
 	int hlen, tlen;
 	struct hsr_sup_tag *hsr_stag;
@@ -315,7 +315,7 @@ static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
 	if (skb == NULL)
 		return;
 
-	hsr_priv = netdev_priv(hsr_dev);
+	hsr = netdev_priv(hsr_dev);
 
 	skb_reserve(skb, hlen);
 
@@ -324,7 +324,7 @@ static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
 	skb->priority = TC_PRIO_CONTROL;
 
 	if (dev_hard_header(skb, skb->dev, ETH_P_PRP,
-			    hsr_priv->sup_multicast_addr,
+			    hsr->sup_multicast_addr,
 			    skb->dev->dev_addr, skb->len) < 0)
 		goto out;
 
@@ -334,10 +334,10 @@ static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
 	set_hsr_stag_path(hsr_stag, 0xf);
 	set_hsr_stag_HSR_Ver(hsr_stag, 0);
 
-	spin_lock_irqsave(&hsr_priv->seqnr_lock, irqflags);
-	hsr_stag->sequence_nr = htons(hsr_priv->sequence_nr);
-	hsr_priv->sequence_nr++;
-	spin_unlock_irqrestore(&hsr_priv->seqnr_lock, irqflags);
+	spin_lock_irqsave(&hsr->seqnr_lock, irqflags);
+	hsr_stag->sequence_nr = htons(hsr->sequence_nr);
+	hsr->sequence_nr++;
+	spin_unlock_irqrestore(&hsr->seqnr_lock, irqflags);
 
 	hsr_stag->HSR_TLV_Type = type;
 	hsr_stag->HSR_TLV_Length = 12;
@@ -360,48 +360,48 @@ out:
  */
 static void hsr_announce(unsigned long data)
 {
-	struct hsr_priv *hsr_priv;
+	struct hsr_priv *hsr;
 
-	hsr_priv = (struct hsr_priv *) data;
+	hsr = (struct hsr_priv *) data;
 
-	if (hsr_priv->announce_count < 3) {
-		send_hsr_supervision_frame(hsr_priv->dev, HSR_TLV_ANNOUNCE);
-		hsr_priv->announce_count++;
+	if (hsr->announce_count < 3) {
+		send_hsr_supervision_frame(hsr->dev, HSR_TLV_ANNOUNCE);
+		hsr->announce_count++;
 	} else {
-		send_hsr_supervision_frame(hsr_priv->dev, HSR_TLV_LIFE_CHECK);
+		send_hsr_supervision_frame(hsr->dev, HSR_TLV_LIFE_CHECK);
 	}
 
-	if (hsr_priv->announce_count < 3)
-		hsr_priv->announce_timer.expires = jiffies +
+	if (hsr->announce_count < 3)
+		hsr->announce_timer.expires = jiffies +
 				msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL);
 	else
-		hsr_priv->announce_timer.expires = jiffies +
+		hsr->announce_timer.expires = jiffies +
 				msecs_to_jiffies(HSR_LIFE_CHECK_INTERVAL);
 
-	if (is_admin_up(hsr_priv->dev))
-		add_timer(&hsr_priv->announce_timer);
+	if (is_admin_up(hsr->dev))
+		add_timer(&hsr->announce_timer);
 }
 
 
 static void restore_slaves(struct net_device *hsr_dev)
 {
-	struct hsr_priv *hsr_priv;
+	struct hsr_priv *hsr;
 	int i;
 	int res;
 
-	hsr_priv = netdev_priv(hsr_dev);
+	hsr = netdev_priv(hsr_dev);
 
 	rtnl_lock();
 
 	/* Restore promiscuity */
 	for (i = 0; i < HSR_MAX_SLAVE; i++) {
-		if (!hsr_priv->slave[i])
+		if (!hsr->slave[i])
 			continue;
-		res = dev_set_promiscuity(hsr_priv->slave[i], -1);
+		res = dev_set_promiscuity(hsr->slave[i], -1);
 		if (res)
 			netdev_info(hsr_dev,
 				    "Cannot restore slave promiscuity (%s, %d)\n",
-				    hsr_priv->slave[i]->name, res);
+				    hsr->slave[i]->name, res);
 	}
 
 	rtnl_unlock();
@@ -409,10 +409,10 @@ static void restore_slaves(struct net_device *hsr_dev)
 
 static void reclaim_hsr_dev(struct rcu_head *rh)
 {
-	struct hsr_priv *hsr_priv;
+	struct hsr_priv *hsr;
 
-	hsr_priv = container_of(rh, struct hsr_priv, rcu_head);
-	free_netdev(hsr_priv->dev);
+	hsr = container_of(rh, struct hsr_priv, rcu_head);
+	free_netdev(hsr->dev);
 }
 
 
@@ -421,14 +421,14 @@ static void reclaim_hsr_dev(struct rcu_head *rh)
  */
 static void hsr_dev_destroy(struct net_device *hsr_dev)
 {
-	struct hsr_priv *hsr_priv;
+	struct hsr_priv *hsr;
 
-	hsr_priv = netdev_priv(hsr_dev);
+	hsr = netdev_priv(hsr_dev);
 
-	del_timer(&hsr_priv->announce_timer);
-	unregister_hsr_master(hsr_priv);    /* calls list_del_rcu on hsr_priv */
+	del_timer(&hsr->announce_timer);
+	unregister_hsr_master(hsr);    /* calls list_del_rcu on hsr */
 	restore_slaves(hsr_dev);
-	call_rcu(&hsr_priv->rcu_head, reclaim_hsr_dev);   /* reclaim hsr_priv */
+	call_rcu(&hsr->rcu_head, reclaim_hsr_dev);   /* reclaim hsr */
 }
 
 static const struct net_device_ops hsr_device_ops = {
@@ -500,27 +500,27 @@ static const unsigned char def_multicast_addr[ETH_ALEN] __aligned(2) = {
 int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
 		     unsigned char multicast_spec)
 {
-	struct hsr_priv *hsr_priv;
+	struct hsr_priv *hsr;
 	int i;
 	int res;
 
-	hsr_priv = netdev_priv(hsr_dev);
-	hsr_priv->dev = hsr_dev;
-	INIT_LIST_HEAD(&hsr_priv->node_db);
-	INIT_LIST_HEAD(&hsr_priv->self_node_db);
+	hsr = netdev_priv(hsr_dev);
+	hsr->dev = hsr_dev;
+	INIT_LIST_HEAD(&hsr->node_db);
+	INIT_LIST_HEAD(&hsr->self_node_db);
 	for (i = 0; i < HSR_MAX_SLAVE; i++)
-		hsr_priv->slave[i] = slave[i];
+		hsr->slave[i] = slave[i];
 
-	spin_lock_init(&hsr_priv->seqnr_lock);
+	spin_lock_init(&hsr->seqnr_lock);
 	/* Overflow soon to find bugs easier: */
-	hsr_priv->sequence_nr = USHRT_MAX - 1024;
+	hsr->sequence_nr = USHRT_MAX - 1024;
 
-	init_timer(&hsr_priv->announce_timer);
-	hsr_priv->announce_timer.function = hsr_announce;
-	hsr_priv->announce_timer.data = (unsigned long) hsr_priv;
+	init_timer(&hsr->announce_timer);
+	hsr->announce_timer.function = hsr_announce;
+	hsr->announce_timer.data = (unsigned long) hsr;
 
-	ether_addr_copy(hsr_priv->sup_multicast_addr, def_multicast_addr);
-	hsr_priv->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;
+	ether_addr_copy(hsr->sup_multicast_addr, def_multicast_addr);
+	hsr->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;
 
 /* FIXME: should I modify the value of these?
  *
@@ -547,20 +547,20 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
 	hsr_dev->features |= NETIF_F_VLAN_CHALLENGED;
 
 	/* Set hsr_dev's MAC address to that of mac_slave1 */
-	ether_addr_copy(hsr_dev->dev_addr, hsr_priv->slave[0]->dev_addr);
+	ether_addr_copy(hsr_dev->dev_addr, hsr->slave[0]->dev_addr);
 
 	/* Set required header length */
 	for (i = 0; i < HSR_MAX_SLAVE; i++) {
-		if (slave[i]->hard_header_len + HSR_TAGLEN >
+		if (slave[i]->hard_header_len + HSR_HLEN >
 						hsr_dev->hard_header_len)
 			hsr_dev->hard_header_len =
-					slave[i]->hard_header_len + HSR_TAGLEN;
+					slave[i]->hard_header_len + HSR_HLEN;
 	}
 
 	/* MTU */
 	for (i = 0; i < HSR_MAX_SLAVE; i++)
-		if (slave[i]->mtu - HSR_TAGLEN < hsr_dev->mtu)
-			hsr_dev->mtu = slave[i]->mtu - HSR_TAGLEN;
+		if (slave[i]->mtu - HSR_HLEN < hsr_dev->mtu)
+			hsr_dev->mtu = slave[i]->mtu - HSR_HLEN;
 
 	/* Make sure the 1st call to netif_carrier_on() gets through */
 	netif_carrier_off(hsr_dev);
@@ -576,9 +576,8 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
 	}
 
 	/* Make sure we recognize frames from ourselves in hsr_rcv() */
-	res = hsr_create_self_node(&hsr_priv->self_node_db,
-					hsr_dev->dev_addr,
-					hsr_priv->slave[1]->dev_addr);
+	res = hsr_create_self_node(&hsr->self_node_db, hsr_dev->dev_addr,
+				   hsr->slave[1]->dev_addr);
 	if (res < 0)
 		goto fail;
 
@@ -586,7 +585,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
 	if (res)
 		goto fail;
 
-	register_hsr_master(hsr_priv);
+	register_hsr_master(hsr);
 
 	return 0;