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authorYi Zou <yi.zou@intel.com>2011-06-21 03:59:05 +0400
committerJames Bottomley <JBottomley@Parallels.com>2011-06-30 01:28:39 +0400
commit33dc362b7f155a584688bcab2facdd4d21232001 (patch)
treee8bcb27f2915d714f4ce60ee6740809686900672 /include/scsi/libfc.h
parent480584818a4bb3655d8d0d875ed60b427fc61cc5 (diff)
downloadlinux-33dc362b7f155a584688bcab2facdd4d21232001.tar.xz
[SCSI] libfc, tcm_fc: add ddp_targ() to libfc function template to supprot FCoE DDP in target mode
The fcoe driver can implement ddp_targ() similarly to ddp_setup() when fcoe stack works with existing target frame, e.g., tcm, where the ddp_targ() would eventually point to the underlying hardware driver's implementation of ndo_fcoe_ddp_targ() through net_device_ops. This new API sets up DDP context for target appropriately by setting required bits for DDP context. 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>
Diffstat (limited to 'include/scsi/libfc.h')
-rw-r--r--include/scsi/libfc.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index a3cbda4ddb5c..7d96829b0c00 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -511,6 +511,14 @@ struct libfc_function_template {
*/
int (*ddp_done)(struct fc_lport *, u16);
/*
+ * Sets up the DDP context for a given exchange id on the given
+ * scatterlist if LLD supports DDP for FCoE target.
+ *
+ * STATUS: OPTIONAL
+ */
+ int (*ddp_target)(struct fc_lport *, u16, struct scatterlist *,
+ unsigned int);
+ /*
* Allow LLD to fill its own Link Error Status Block
*
* STATUS: OPTIONAL