[SCSI] bnx2fc: Prevent creating of NPIV port with duplicate WWN

This patch adds a validation step before allowing creation of a new NPIV port.
It checks whether the WWPN passed for the new NPIV port to be created is unique
for the given physical port.

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

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
index 25d3bcd179b1..351ca4cb403f 100644
--- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
@@ -1020,6 +1020,17 @@ static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
         struct bnx2fc_interface *interface = port->priv;
         struct net_device *netdev = interface->netdev;
         struct fc_lport *vn_port;
+        int rc;
+        char buf[32];
+
+        rc = fcoe_validate_vport_create(vport);
+        if (rc) {
+                fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
+                printk(KERN_ERR PFX "Failed to create vport, "
+                       "WWPN (0x%s) already exists\n",
+                       buf);
+                return rc;
+        }
 
         if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
                 printk(KERN_ERR PFX "vn ports cannot be created on"