[PATCH 10/11] fcoe: add support to FCoE offload support in fcoe_sw through net_device

Yi Zou
2009-02-27T22:07:26Z

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

Signed-off-by: Yi Zou <yi.zou@intel.com>
---

drivers/scsi/fcoe/fcoe_sw.c | 38 ++++++++++++++++++++++++++++++++++++++
1 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/drivers/scsi/fcoe/fcoe_sw.c b/drivers/scsi/fcoe/fcoe_sw.c
index d99217d..2bbbe3c 100644
--- a/drivers/scsi/fcoe/fcoe_sw.c
+++ b/drivers/scsi/fcoe/fcoe_sw.c
@@ -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,
};

/**