From: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Date: Tue, 30 Aug 2011 22:54:48 +0000 (-0700)
Subject: [SCSI] bnx2fc: Send solicitation only after vlan discovery is complete
X-Git-Tag: next-20110919~59^2~7
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8a5badf1ea10c726b9cc04e52f91395b1248e034;p=karo-tx-linux.git

[SCSI] bnx2fc: Send solicitation only after vlan discovery is complete

Link up event is generated to the driver even before vlan discovery has
started. Because of this driver can send discovery solicitation on a stale
vlan. Call fcoe_ctlr_link_up() only when the driver is in enabled state, which
implies the vlan discovery is complete before sending solicitation.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

diff --git a/drivers/scsi/bnx2fc/bnx2fc.h b/drivers/scsi/bnx2fc/bnx2fc.h
index 903e8f64980e..02535e8d9e00 100644
--- a/drivers/scsi/bnx2fc/bnx2fc.h
+++ b/drivers/scsi/bnx2fc/bnx2fc.h
@@ -224,6 +224,7 @@ struct bnx2fc_interface {
 	struct fcoe_ctlr ctlr;
 	u8 vlan_enabled;
 	int vlan_id;
+	bool enabled;
 };
 
 #define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_interface, ctlr)
diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
index 6387067b91a6..ba88ddb4580b 100644
--- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
@@ -865,8 +865,11 @@ static void bnx2fc_indicate_netevent(void *context, unsigned long event,
 		if (link_possible && !bnx2fc_link_ok(lport)) {
 			/* Reset max recv frame size to default */
 			fc_set_mfs(lport, BNX2FC_MFS);
-			printk(KERN_ERR "indicate_netevent: ctlr_link_up\n");
-			fcoe_ctlr_link_up(&interface->ctlr);
+			/*
+			 * ctlr link up will only be handled during
+			 * enable to avoid sending discovery solicitation
+			 * on a stale vlan
+			 */
 		} else if (fcoe_ctlr_link_down(&interface->ctlr)) {
 			mutex_lock(&lport->lp_mutex);
 			list_for_each_entry(vport, &lport->vports, list)
@@ -1784,7 +1787,7 @@ static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
 	lport = interface->ctlr.lp;
 	BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
 
-	if (!bnx2fc_link_ok(lport)) {
+	if (!bnx2fc_link_ok(lport) && interface->enabled) {
 		BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
 		fcoe_ctlr_link_up(&interface->ctlr);
 		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
@@ -1866,6 +1869,7 @@ static int bnx2fc_disable(struct net_device *netdev)
 		rc = -ENODEV;
 		printk(KERN_ERR PFX "bnx2fc_disable: interface or lport not found\n");
 	} else {
+		interface->enabled = false;
 		fcoe_ctlr_link_down(&interface->ctlr);
 		fcoe_clean_pending_queue(interface->ctlr.lp);
 	}
@@ -1888,8 +1892,10 @@ static int bnx2fc_enable(struct net_device *netdev)
 	if (!interface || !interface->ctlr.lp) {
 		rc = -ENODEV;
 		printk(KERN_ERR PFX "bnx2fc_enable: interface or lport not found\n");
-	} else if (!bnx2fc_link_ok(interface->ctlr.lp))
+	} else if (!bnx2fc_link_ok(interface->ctlr.lp)) {
 		fcoe_ctlr_link_up(&interface->ctlr);
+		interface->enabled = true;
+	}
 
 	mutex_unlock(&bnx2fc_dev_lock);
 	rtnl_unlock();
@@ -2002,8 +2008,15 @@ static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
 	/* Make this master N_port */
 	interface->ctlr.lp = lport;
 
+	if (!bnx2fc_link_ok(lport)) {
+		fcoe_ctlr_link_up(&interface->ctlr);
+		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
+		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
+	}
+
 	BNX2FC_HBA_DBG(lport, "create: START DISC\n");
 	bnx2fc_start_disc(interface);
+	interface->enabled = true;
 	/*
 	 * Release from kref_init in bnx2fc_interface_setup, on success
 	 * lport should be holding a reference taken in bnx2fc_if_create