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[SCSI] fcoe: add fip retry to avoid missing critical keep alive

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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>
This commit is contained in:
Vasu Dev 2011-07-27 15:11:05 -07:00 committed by James Bottomley
parent 320036e083
commit 980f5156ab
1 changed files with 15 additions and 6 deletions
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21
drivers/scsi/fcoe/fcoe.c
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@ -486,6 +486,19 @@ static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *netdev,
return 0;
}
/**
* 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
@ -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;
}