From: Robert Love <robert.w.love@intel.com>
To: linux-scsi@vger.kernel.org
Cc: Kiran Patil <kiran.patil@intel.com>, Yi Zou <yi.zou@intel.com>
Subject: [PATCH v2 03/12] libfc, tcm_fc: add ddp_targ() to libfc function template to supprot FCoE DDP in target mode
Date: Mon, 20 Jun 2011 16:59:05 -0700 [thread overview]
Message-ID: <20110620235904.1777.55336.stgit@localhost6.localdomain6> (raw)
In-Reply-To: <20110620235848.1777.5168.stgit@localhost6.localdomain6>
From: Yi Zou <yi.zou@intel.com>
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>
---
drivers/target/tcm_fc/tfc_cmd.c | 5 +++--
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 c056a11..1625b48 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c
@@ -289,8 +289,9 @@ 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 a3cbda4..7d96829 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
next prev parent reply other threads:[~2011-06-20 23:59 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-20 23:58 [PATCH v2 00/12] libfc, libfcoe and fcoe updates for scsi-misc Robert Love
2011-06-20 23:58 ` [PATCH v2 01/12] tcm_fc: Fix warning in file tfc_io Robert Love
2011-06-20 23:58 ` [PATCH v2 02/12] libfc: Enhancement to RPORT state machine applicable only for VN2VN mode Robert Love
2011-06-20 23:59 ` Robert Love [this message]
2011-06-20 23:59 ` [PATCH v2 04/12] fcoe: support ndo_fcoe_ddp_target() for DDP in FCoE targe Robert Love
2011-06-20 23:59 ` [PATCH v2 05/12] fcoe: Unable to select the exchangeID from offload pool for storage targets Robert Love
2011-06-20 23:59 ` [PATCH v2 06/12] fcoe: Round-robin based selection of CPU for post-processing of incoming commands Robert Love
2011-06-20 23:59 ` [PATCH v2 07/12] fcoe: Amends previous patch, Round-robin based selection of CPU for post processing of incoming request for FCoE target Robert Love
2011-06-20 23:59 ` [PATCH v2 08/12] libfc:Fix for exchange/seq loopup failure when FCoE stack is used as target and connected to windows initaitor Robert Love
2011-06-20 23:59 ` [PATCH v2 09/12] tcm_fc: Fix ft_send_tm-bug and drop ft_get_lun_for_cmd usage Robert Love
2011-06-22 18:37 ` Nicholas A. Bellinger
2011-06-22 21:38 ` Kiran Patil
2011-06-22 23:30 ` [PATCH] " Kiran Patil
2011-06-23 2:47 ` Nicholas A. Bellinger
2011-06-20 23:59 ` [PATCH v2 10/12] tcm_fc: Fixing reference counting problem which was causing ft_sess to be deleted Robert Love
2011-06-20 23:59 ` [PATCH v2 11/12] libfc: post reset event on lport reset Robert Love
2011-06-20 23:59 ` [PATCH v2 12/12] fcoe: Rearrange fcoe port and NPIV port cleanup Robert Love
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