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authorBhanu Prakash Gollapudi <bprakash@broadcom.com>2011-07-26 14:51:40 -0700
committerJames Bottomley <JBottomley@Parallels.com>2011-07-27 15:38:12 +0400
commitb252f4c7c39cc43c1a34c68951f98d7391a1a103 (patch)
tree8c9106ae222a32b8b418b091a11f51a9fd851d7f /drivers/scsi
parentaea71a024914e8b5b8bed31256dae42195a0a207 (diff)
[SCSI] bnx2fc: Enable REC & CONF support for the session
Based on PRLI response, identify if the target is FCP-2 (seq level error recovery) capable, and appropriately set the corresponding CONF, REC flags when offloading the session. Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/bnx2fc/bnx2fc.h2
-rw-r--r--drivers/scsi/bnx2fc/bnx2fc_hwi.c12
-rw-r--r--drivers/scsi/bnx2fc/bnx2fc_io.c3
-rw-r--r--drivers/scsi/bnx2fc/bnx2fc_tgt.c8
4 files changed, 24 insertions, 1 deletions
diff --git a/drivers/scsi/bnx2fc/bnx2fc.h b/drivers/scsi/bnx2fc/bnx2fc.h
index 6012317c1f2f..d38dcc7f1047 100644
--- a/drivers/scsi/bnx2fc/bnx2fc.h
+++ b/drivers/scsi/bnx2fc/bnx2fc.h
@@ -244,9 +244,11 @@ struct bnx2fc_rport {
struct fc_rport_priv *rdata;
void __iomem *ctx_base;
#define DPM_TRIGER_TYPE 0x40
+ u32 io_timeout;
u32 fcoe_conn_id;
u32 context_id;
u32 sid;
+ int dev_type;
unsigned long flags;
#define BNX2FC_FLAG_SESSION_READY 0x1
diff --git a/drivers/scsi/bnx2fc/bnx2fc_hwi.c b/drivers/scsi/bnx2fc/bnx2fc_hwi.c
index ee1674b794b1..fa263b5902e1 100644
--- a/drivers/scsi/bnx2fc/bnx2fc_hwi.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_hwi.c
@@ -279,6 +279,18 @@ int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT);
+ /*
+ * Info from PRLI response, this info is used for sequence level error
+ * recovery support
+ */
+ if (tgt->dev_type == TYPE_TAPE) {
+ ofld_req3.flags |= 1 <<
+ FCOE_KWQE_CONN_OFFLOAD3_B_CONF_REQ_SHIFT;
+ ofld_req3.flags |= (((rdata->flags & FC_RP_FLAGS_REC_SUPPORTED)
+ ? 1 : 0) <<
+ FCOE_KWQE_CONN_OFFLOAD3_B_REC_VALID_SHIFT);
+ }
+
/* vlan flag */
ofld_req3.flags |= (interface->vlan_enabled <<
FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT);
diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c
index e711ea3dd900..72940b8625bd 100644
--- a/drivers/scsi/bnx2fc/bnx2fc_io.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_io.c
@@ -1862,7 +1862,8 @@ static int bnx2fc_post_io_req(struct bnx2fc_rport *tgt,
}
/* Time IO req */
- bnx2fc_cmd_timer_set(io_req, BNX2FC_IO_TIMEOUT);
+ if (tgt->io_timeout)
+ bnx2fc_cmd_timer_set(io_req, BNX2FC_IO_TIMEOUT);
/* Obtain free SQ entry */
bnx2fc_add_2_sq(tgt, xid);
diff --git a/drivers/scsi/bnx2fc/bnx2fc_tgt.c b/drivers/scsi/bnx2fc/bnx2fc_tgt.c
index 263c2678ff62..7eff269d4c41 100644
--- a/drivers/scsi/bnx2fc/bnx2fc_tgt.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_tgt.c
@@ -353,6 +353,14 @@ static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
tgt->rq_cons_idx = 0;
atomic_set(&tgt->num_active_ios, 0);
+ if (rdata->flags & FC_RP_FLAGS_RETRY) {
+ tgt->dev_type = TYPE_TAPE;
+ tgt->io_timeout = 0; /* use default ULP timeout */
+ } else {
+ tgt->dev_type = TYPE_DISK;
+ tgt->io_timeout = BNX2FC_IO_TIMEOUT;
+ }
+
/* initialize sq doorbell */
sq_db->header.header = B577XX_DOORBELL_HDR_DB_TYPE;
sq_db->header.header |= B577XX_FCOE_CONNECTION_TYPE <<