netdev - [PATCH net-next] bonding: trivial: rename slave->jiffies to ->last_link

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Message-Id: <1389838837-10283-1-git-send-email-vfalico@redhat.com>
Date:	Thu, 16 Jan 2014 03:20:37 +0100
From:	Veaceslav Falico <vfalico@...hat.com>
To:	netdev@...r.kernel.org
Cc:	Veaceslav Falico <vfalico@...hat.com>,
	Jay Vosburgh <fubar@...ibm.com>,
	Andy Gospodarek <andy@...yhouse.net>
Subject: [PATCH net-next] bonding: trivial: rename slave->jiffies to ->last_link_up

slave->jiffies is updated every time the slave becomes active, which, for
bonding, means that its link is 'up'.

CC: Jay Vosburgh <fubar@...ibm.com>
CC: Andy Gospodarek <andy@...yhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@...hat.com>
---

Notes:
    On top of
    
    [PATCH net-next 0/6] bonding: only rely on arp packets if arp monitor is used
    
    Sorry for the trivial patch, but I'm always loosing some time
    trying to remember what that actually means.

 drivers/net/bonding/bond_main.c | 20 ++++++++++----------
 drivers/net/bonding/bonding.h   |  3 ++-
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index f9e5512..0f613ae 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -846,7 +846,7 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
 		return;
 
 	if (new_active) {
-		new_active->jiffies = jiffies;
+		new_active->last_link_up = jiffies;
 
 		if (new_active->link == BOND_LINK_BACK) {
 			if (USES_PRIMARY(bond->params.mode)) {
@@ -1488,7 +1488,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
 	}
 
 	if (new_slave->link != BOND_LINK_DOWN)
-		new_slave->jiffies = jiffies;
+		new_slave->last_link_up = jiffies;
 	pr_debug("Initial state of slave_dev is BOND_LINK_%s\n",
 		new_slave->link == BOND_LINK_DOWN ? "DOWN" :
 			(new_slave->link == BOND_LINK_UP ? "UP" : "BACK"));
@@ -1923,7 +1923,7 @@ static int bond_miimon_inspect(struct bonding *bond)
 				 * recovered before downdelay expired
 				 */
 				slave->link = BOND_LINK_UP;
-				slave->jiffies = jiffies;
+				slave->last_link_up = jiffies;
 				pr_info("%s: link status up again after %d ms for interface %s.\n",
 					bond->dev->name,
 					(bond->params.downdelay - slave->delay) *
@@ -1998,7 +1998,7 @@ static void bond_miimon_commit(struct bonding *bond)
 
 		case BOND_LINK_UP:
 			slave->link = BOND_LINK_UP;
-			slave->jiffies = jiffies;
+			slave->last_link_up = jiffies;
 
 			if (bond->params.mode == BOND_MODE_8023AD) {
 				/* prevent it from being the active one */
@@ -2345,7 +2345,7 @@ int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond,
 		bond_validate_arp(bond, slave, sip, tip);
 	else if (bond->curr_active_slave &&
 		 time_after(slave_last_arp_rx(bond, bond->curr_active_slave),
-			    bond->curr_active_slave->jiffies))
+			    bond->curr_active_slave->last_link_up))
 		bond_validate_arp(bond, slave, tip, sip);
 
 out_unlock:
@@ -2392,9 +2392,9 @@ static void bond_loadbalance_arp_mon(struct work_struct *work)
 	oldcurrent = ACCESS_ONCE(bond->curr_active_slave);
 	/* see if any of the previous devices are up now (i.e. they have
 	 * xmt and rcv traffic). the curr_active_slave does not come into
-	 * the picture unless it is null. also, slave->jiffies is not needed
-	 * here because we send an arp on each slave and give a slave as
-	 * long as it needs to get the tx/rx within the delta.
+	 * the picture unless it is null. also, slave->last_link_up is not
+	 * needed here because we send an arp on each slave and give a slave
+	 * as long as it needs to get the tx/rx within the delta.
 	 * TODO: what about up/down delay in arp mode? it wasn't here before
 	 *       so it can wait
 	 */
@@ -2516,7 +2516,7 @@ static int bond_ab_arp_inspect(struct bonding *bond)
 		 * active.  This avoids bouncing, as the last receive
 		 * times need a full ARP monitor cycle to be updated.
 		 */
-		if (bond_time_in_interval(bond, slave->jiffies, 2))
+		if (bond_time_in_interval(bond, slave->last_link_up, 2))
 			continue;
 
 		/*
@@ -2709,7 +2709,7 @@ static void bond_ab_arp_probe(struct bonding *bond)
 	new_slave->link = BOND_LINK_BACK;
 	bond_set_slave_active_flags(new_slave);
 	bond_arp_send_all(bond, new_slave);
-	new_slave->jiffies = jiffies;
+	new_slave->last_link_up = jiffies;
 	rcu_assign_pointer(bond->current_arp_slave, new_slave);
 }
 
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index 99126b2..9f07af1 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -184,7 +184,8 @@ struct slave {
 	struct net_device *dev; /* first - useful for panic debug */
 	struct bonding *bond; /* our master */
 	int    delay;
-	unsigned long jiffies;
+	/* all three in jiffies */
+	unsigned long last_link_up;
 	unsigned long last_arp_rx;
 	unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS];
 	s8     link;    /* one of BOND_LINK_XXXX */
-- 
1.8.4

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