diff options
| author | Yi Zou <yi.zou@intel.com> | 2011-06-20 16:59:05 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-06-29 16:28:39 -0500 |
| commit | 33dc362b7f155a584688bcab2facdd4d21232001 (patch) | |
| tree | e8bcb27f2915d714f4ce60ee6740809686900672 | |
| parent | 480584818a4bb3655d8d0d875ed60b427fc61cc5 (diff) | |
| download | lwn-33dc362b7f155a584688bcab2facdd4d21232001.tar.gz lwn-33dc362b7f155a584688bcab2facdd4d21232001.zip | |
[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>
| -rw-r--r-- | drivers/target/tcm_fc/tfc_cmd.c | 5 | ||||
| -rw-r--r-- | include/scsi/libfc.h | 8 |
2 files changed, 11 insertions, 2 deletions
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c index b2a106729d49..b9cea59d43b4 100644 --- a/drivers/target/tcm_fc/tfc_cmd.c +++ b/drivers/target/tcm_fc/tfc_cmd.c @@ -266,8 +266,9 @@ int ft_write_pending(struct se_cmd *se_cmd) cmd->sg_cnt = T_TASK(se_cmd)->t_tasks_sg_chained_no; } - if (cmd->sg && lport->tt.ddp_setup(lport, ep->xid, - cmd->sg, cmd->sg_cnt)) + if (cmd->sg && lport->tt.ddp_target(lport, ep->xid, + cmd->sg, + cmd->sg_cnt)) cmd->was_ddp_setup = 1; } } 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 |