Commit e0562007 authored by Yi Zou's avatar Yi Zou Committed by James Bottomley
Browse files

[SCSI] fcoe: add support to FCoE offload support in fcoe_sw through net_device 



This adds implementation of ddp_setup()/ddp_done() in fcoe_sw for its
fcoe_sw_libfc_fcn_templ.

Signed-off-by: default avatarYi Zou <yi.zou@intel.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent b277d2aa

drivers/scsi/fcoe/fcoe_sw.c

+38 −0
Original line number Diff line number Diff line
@@ -373,8 +373,46 @@ static int fcoe_sw_destroy(struct net_device *netdev) 
	return 0;

}



/*

 * fcoe_sw_ddp_setup - calls LLD's ddp_setup through net_device

 * @lp:	the corresponding fc_lport

 * @xid: the exchange id for this ddp transfer

 * @sgl: the scatterlist describing this transfer

 * @sgc: number of sg items

 *

 * Returns : 0 no ddp

 */

static int fcoe_sw_ddp_setup(struct fc_lport *lp, u16 xid,

			     struct scatterlist *sgl, unsigned int sgc)

{

	struct net_device *n = fcoe_netdev(lp);



	if (n->netdev_ops && n->netdev_ops->ndo_fcoe_ddp_setup)

		return n->netdev_ops->ndo_fcoe_ddp_setup(n, xid, sgl, sgc);



	return 0;

}



/*

 * fcoe_sw_ddp_done - calls LLD's ddp_done through net_device

 * @lp:	the corresponding fc_lport

 * @xid: the exchange id for this ddp transfer

 *

 * Returns : the length of data that have been completed by ddp

 */

static int fcoe_sw_ddp_done(struct fc_lport *lp, u16 xid)

{

	struct net_device *n = fcoe_netdev(lp);



	if (n->netdev_ops && n->netdev_ops->ndo_fcoe_ddp_done)

		return n->netdev_ops->ndo_fcoe_ddp_done(n, xid);

	return 0;

}



static struct libfc_function_template fcoe_sw_libfc_fcn_templ = {

	.frame_send = fcoe_xmit,

	.ddp_setup = fcoe_sw_ddp_setup,

	.ddp_done = fcoe_sw_ddp_done,

};



/**