From: Christof Schmitt <christof.schmitt@xxxxxxxxxx>
Instead of assigning 4 bytes with the highest byte masked out, use a 3
byte array with the ntoh24 and h24ton helper functions, thus
eliminating the need for the ZFCP_DID_MASK.
Reviewed-by: Swen Schillig <swen@xxxxxxxxxxxx>
Signed-off-by: Christof Schmitt <christof.schmitt@xxxxxxxxxx>
---
drivers/s390/scsi/zfcp_dbf.c | 4 ++--
drivers/s390/scsi/zfcp_def.h | 4 ----
drivers/s390/scsi/zfcp_fsf.c | 12 ++++++------
drivers/s390/scsi/zfcp_fsf.h | 15 +++++++++------
4 files changed, 17 insertions(+), 18 deletions(-)
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_dbf.c linux-2.6-patched/drivers/s390/scsi/zfcp_dbf.c
--- linux-2.6/drivers/s390/scsi/zfcp_dbf.c 2009-11-23 09:59:44.000000000 +0100
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_dbf.c 2009-11-23 09:59:44.000000000 +0100
@@ -178,7 +178,7 @@ void _zfcp_dbf_hba_fsf_response(const ch
case FSF_QTCB_SEND_ELS:
send_els = (struct zfcp_send_els *)fsf_req->data;
- response->u.els.d_id = qtcb->bottom.support.d_id;
+ response->u.els.d_id = ntoh24(qtcb->bottom.support.d_id);
response->u.els.ls_code = send_els->ls_code >> 24;
break;
@@ -812,7 +812,7 @@ void zfcp_dbf_san_incoming_els(struct zf
int length = (int)buf->length -
(int)((void *)&buf->payload - (void *)buf);
- zfcp_dbf_san_els("iels", 1, fsf_req, buf->d_id,
+ zfcp_dbf_san_els("iels", 1, fsf_req, ntoh24(buf->d_id),
fc_host_port_id(adapter->scsi_host),
buf->payload.data[0], (void *)buf->payload.data,
length);
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_def.h linux-2.6-patched/drivers/s390/scsi/zfcp_def.h
--- linux-2.6/drivers/s390/scsi/zfcp_def.h 2009-11-23 09:59:44.000000000 +0100
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_def.h 2009-11-23 09:59:44.000000000 +0100
@@ -71,10 +71,6 @@
/* timeout value for "default timer" for fsf requests */
#define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ)
-/*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/
-
-#define ZFCP_DID_MASK 0x00FFFFFF
-
/*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/
/*
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_fsf.c linux-2.6-patched/drivers/s390/scsi/zfcp_fsf.c
--- linux-2.6/drivers/s390/scsi/zfcp_fsf.c 2009-11-23 09:59:44.000000000 +0100
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_fsf.c 2009-11-23 09:59:44.000000000 +0100
@@ -128,7 +128,7 @@ static void zfcp_fsf_status_read_port_cl
struct fsf_status_read_buffer *sr_buf = req->data;
struct zfcp_adapter *adapter = req->adapter;
struct zfcp_port *port;
- int d_id = sr_buf->d_id & ZFCP_DID_MASK;
+ int d_id = ntoh24(sr_buf->d_id);
read_lock_irqsave(&adapter->port_list_lock, flags);
list_for_each_entry(port, &adapter->port_list, list)
@@ -494,7 +494,7 @@ static int zfcp_fsf_exchange_config_eval
fc_host_port_name(shost) = nsp->fl_wwpn;
fc_host_node_name(shost) = nsp->fl_wwnn;
- fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK;
+ fc_host_port_id(shost) = ntoh24(bottom->s_id);
fc_host_speed(shost) = bottom->fc_link_speed;
fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
@@ -506,7 +506,7 @@ static int zfcp_fsf_exchange_config_eval
switch (bottom->fc_topology) {
case FSF_TOPO_P2P:
- adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK;
+ adapter->peer_d_id = ntoh24(bottom->peer_d_id);
adapter->peer_wwpn = plogi->fl_wwpn;
adapter->peer_wwnn = plogi->fl_wwnn;
fc_host_port_type(shost) = FC_PORTTYPE_PTP;
@@ -1216,7 +1216,7 @@ int zfcp_fsf_send_els(struct zfcp_send_e
if (ret)
goto failed_send;
- req->qtcb->bottom.support.d_id = els->d_id;
+ hton24(req->qtcb->bottom.support.d_id, els->d_id);
req->handler = zfcp_fsf_send_els_handler;
req->data = els;
@@ -1522,7 +1522,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_a
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
req->handler = zfcp_fsf_open_port_handler;
- req->qtcb->bottom.support.d_id = port->d_id;
+ hton24(req->qtcb->bottom.support.d_id, port->d_id);
req->data = port;
req->erp_action = erp_action;
erp_action->fsf_req = req;
@@ -1669,7 +1669,7 @@ int zfcp_fsf_open_wka_port(struct zfcp_f
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
req->handler = zfcp_fsf_open_wka_port_handler;
- req->qtcb->bottom.support.d_id = wka_port->d_id;
+ hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
req->data = wka_port;
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_fsf.h linux-2.6-patched/drivers/s390/scsi/zfcp_fsf.h
--- linux-2.6/drivers/s390/scsi/zfcp_fsf.h 2009-11-23 09:59:43.000000000 +0100
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_fsf.h 2009-11-23 09:59:44.000000000 +0100
@@ -11,6 +11,7 @@
#include <linux/pfn.h>
#include <linux/scatterlist.h>
+#include <scsi/libfc.h>
#define FSF_QTCB_CURRENT_VERSION 0x00000001
@@ -228,7 +229,8 @@ struct fsf_status_read_buffer {
u32 length;
u32 res1;
struct fsf_queue_designator queue_designator;
- u32 d_id;
+ u8 res2;
+ u8 d_id[3];
u32 class;
u64 fcp_lun;
u8 res3[24];
@@ -327,8 +329,8 @@ struct fsf_qtcb_bottom_io {
struct fsf_qtcb_bottom_support {
u32 operation_subtype;
- u8 res1[12];
- u32 d_id;
+ u8 res1[13];
+ u8 d_id[3];
u32 option;
u64 fcp_lun;
u64 res2;
@@ -357,11 +359,12 @@ struct fsf_qtcb_bottom_config {
u32 fc_topology;
u32 fc_link_speed;
u32 adapter_type;
- u32 peer_d_id;
+ u8 res0;
+ u8 peer_d_id[3];
u8 res1[2];
u16 timer_interval;
- u8 res2[8];
- u32 s_id;
+ u8 res2[9];
+ u8 s_id[3];
u8 nport_serv_param[128];
u8 res3[8];
u32 adapter_ports;
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
