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[SCSI] fcoe: support ndo_fcoe_ddp_target() for DDP in FCoE targe 

Add ddp_target() support to the Open-FCoE sw fcoe hba driver (fcoe.ko).

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Kiran Patil <kiran.patil@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:
Yi Zou 2011-06-20 16:59:10 -07:00 committed by James Bottomley
parent 33dc362b7f
commit 71f894915a
1 changed files with 25 additions and 1 deletions
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26
drivers/scsi/fcoe/fcoe.c
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@ -99,7 +99,8 @@ static void fcoe_destroy_work(struct work_struct *);
static int fcoe_ddp_setup(struct fc_lport *, u16, struct scatterlist *,
unsigned int);
static int fcoe_ddp_done(struct fc_lport *, u16);
static int fcoe_ddp_target(struct fc_lport *, u16, struct scatterlist *,
unsigned int);
static int fcoe_cpu_callback(struct notifier_block *, unsigned long, void *);
static bool fcoe_match(struct net_device *netdev);
@ -143,6 +144,7 @@ static struct libfc_function_template fcoe_libfc_fcn_templ = {
.frame_send = fcoe_xmit,
.ddp_setup = fcoe_ddp_setup,
.ddp_done = fcoe_ddp_done,
.ddp_target = fcoe_ddp_target,
.elsct_send = fcoe_elsct_send,
.get_lesb = fcoe_get_lesb,
.lport_set_port_id = fcoe_set_port_id,
@ -886,6 +888,28 @@ static int fcoe_ddp_setup(struct fc_lport *lport, u16 xid,
return 0;
}
/**
* fcoe_ddp_target() - Call a LLD's ddp_target through the net device
* @lport: The local port to setup DDP for
* @xid: The exchange ID for this DDP transfer
* @sgl: The scatterlist describing this transfer
* @sgc: The number of sg items
*
* Returns: 0 if the DDP context was not configured
*/
static int fcoe_ddp_target(struct fc_lport *lport, u16 xid,
struct scatterlist *sgl, unsigned int sgc)
{
struct net_device *netdev = fcoe_netdev(lport);
if (netdev->netdev_ops->ndo_fcoe_ddp_target)
return netdev->netdev_ops->ndo_fcoe_ddp_target(netdev, xid,
sgl, sgc);
return 0;
}
/**
* fcoe_ddp_done() - Call a LLD's ddp_done through the net device
* @lport: The local port to complete DDP on