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authorVasu Dev <vasu.dev@intel.com>2011-07-28 02:11:05 +0400
committerJames Bottomley <JBottomley@Parallels.com>2011-07-28 12:13:51 +0400
commit980f5156ab2d75e0462f3811e8a92acd06b0577b (patch)
treebb54a2b9093f817ddb5a8e04cd584f6df8133188 /drivers/scsi
parent320036e083bb2a0f60820b51cb9f0bfa651ee62f (diff)
downloadlinux-980f5156ab2d75e0462f3811e8a92acd06b0577b.tar.xz
[SCSI] fcoe: add fip retry to avoid missing critical keep alive
Use pending queue to retry FIP frame in case its tx fails and use common pending queue for both fcoe and fip frames using fcoe_port_send. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/fcoe/fcoe.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 945df21ac017..528b86bca491 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -487,6 +487,19 @@ static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *netdev,
}
/**
+ * fcoe_port_send() - Send an Ethernet-encapsulated FIP/FCoE frame
+ * @port: The FCoE port
+ * @skb: The FIP/FCoE packet to be sent
+ */
+static void fcoe_port_send(struct fcoe_port *port, struct sk_buff *skb)
+{
+ if (port->fcoe_pending_queue.qlen)
+ fcoe_check_wait_queue(port->lport, skb);
+ else if (fcoe_start_io(skb))
+ fcoe_check_wait_queue(port->lport, skb);
+}
+
+/**
* fcoe_fip_send() - Send an Ethernet-encapsulated FIP frame
* @fip: The FCoE controller
* @skb: The FIP packet to be sent
@@ -494,7 +507,7 @@ static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *netdev,
static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
{
skb->dev = fcoe_from_ctlr(fip)->netdev;
- dev_queue_xmit(skb);
+ fcoe_port_send(lport_priv(fip->lp), skb);
}
/**
@@ -1575,11 +1588,7 @@ int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp)
/* send down to lld */
fr_dev(fp) = lport;
- if (port->fcoe_pending_queue.qlen)
- fcoe_check_wait_queue(lport, skb);
- else if (fcoe_start_io(skb))
- fcoe_check_wait_queue(lport, skb);
-
+ fcoe_port_send(port, skb);
return 0;
}