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Message-ID: <20080911021454.23621.192.stgit@localhost.localdomain>
Date: Wed, 10 Sep 2008 19:14:54 -0700
From: Chris Leech <christopher.leech@...el.com>
To: linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Cc: jfs-discussion@...ts.sourceforge.net,
Boaz Harrosh <bharrosh@...asas.com>,
Harvey Harrison <harvey.harrison@...il.com>,
Chris Leech <christopher.leech@...el.com>,
Mike Christie <michaelc@...wisc.edu>
Subject: [PATCH 2/4] 24-bit types: convert iSCSI to use the __be24 type and
macros
The calling convention of hton24 is different now, it takes a single u32
as an argument and evaluates to a __be24 lvalue.
Signed-off-by: Chris Leech <christopher.leech@...el.com>
Acked-by: Mike Christie <michaelc@...wisc.edu>
---
drivers/scsi/iscsi_tcp.c | 8 ++++----
drivers/scsi/libiscsi.c | 6 +++---
include/scsi/iscsi_proto.h | 46 ++++++++++++++++++--------------------------
3 files changed, 26 insertions(+), 34 deletions(-)
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 2a2f009..c9d6e96 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -608,11 +608,11 @@ iscsi_solicit_data_init(struct iscsi_conn *conn, struct iscsi_task *task,
hdr->exp_statsn = r2t->exp_statsn;
hdr->offset = cpu_to_be32(r2t->data_offset);
if (r2t->data_length > conn->max_xmit_dlength) {
- hton24(hdr->dlength, conn->max_xmit_dlength);
+ hdr->dlength = hton24(conn->max_xmit_dlength);
r2t->data_count = conn->max_xmit_dlength;
hdr->flags = 0;
} else {
- hton24(hdr->dlength, r2t->data_length);
+ hdr->dlength = hton24(r2t->data_length);
r2t->data_count = r2t->data_length;
hdr->flags = ISCSI_FLAG_CMD_FINAL;
}
@@ -1311,10 +1311,10 @@ iscsi_solicit_data_cont(struct iscsi_conn *conn, struct iscsi_task *task,
new_offset = r2t->data_offset + r2t->sent;
hdr->offset = cpu_to_be32(new_offset);
if (left > conn->max_xmit_dlength) {
- hton24(hdr->dlength, conn->max_xmit_dlength);
+ hdr->dlength = hton24(conn->max_xmit_dlength);
r2t->data_count = conn->max_xmit_dlength;
} else {
- hton24(hdr->dlength, left);
+ hdr->dlength = hton24(left);
r2t->data_count = left;
hdr->flags = ISCSI_FLAG_CMD_FINAL;
}
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 299e075..8432318 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -105,12 +105,12 @@ void iscsi_prep_unsolicit_data_pdu(struct iscsi_task *task,
hdr->offset = cpu_to_be32(task->unsol_offset);
if (task->unsol_count > conn->max_xmit_dlength) {
- hton24(hdr->dlength, conn->max_xmit_dlength);
+ hdr->dlength = hton24(conn->max_xmit_dlength);
task->data_count = conn->max_xmit_dlength;
task->unsol_offset += task->data_count;
hdr->flags = 0;
} else {
- hton24(hdr->dlength, task->unsol_count);
+ hdr->dlength = hton24(task->unsol_count);
task->data_count = task->unsol_count;
hdr->flags = ISCSI_FLAG_CMD_FINAL;
}
@@ -269,7 +269,7 @@ static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task)
else
task->imm_count = min(out_len,
conn->max_xmit_dlength);
- hton24(hdr->dlength, task->imm_count);
+ hdr->dlength = hton24(task->imm_count);
} else
zero_data(hdr->dlength);
diff --git a/include/scsi/iscsi_proto.h b/include/scsi/iscsi_proto.h
index 429c5ff..a778097 100644
--- a/include/scsi/iscsi_proto.h
+++ b/include/scsi/iscsi_proto.h
@@ -35,15 +35,7 @@
/*
* useful common(control and data pathes) macro
*/
-#undef ntoh24
-#undef hton24
-#define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2]))
-#define hton24(p, v) { \
- p[0] = (((v) >> 16) & 0xFF); \
- p[1] = (((v) >> 8) & 0xFF); \
- p[2] = ((v) & 0xFF); \
-}
-#define zero_data(p) {p[0]=0;p[1]=0;p[2]=0;}
+#define zero_data(x) (x) = (__be24) { .b = { 0, 0, 0 } }
/* initiator tags; opaque for target */
typedef uint32_t __bitwise__ itt_t;
@@ -61,7 +53,7 @@ struct iscsi_hdr {
uint8_t flags; /* Final bit */
uint8_t rsvd2[2];
uint8_t hlength; /* AHSs total length */
- uint8_t dlength[3]; /* Data length */
+ __be24 dlength; /* Data length */
uint8_t lun[8];
itt_t itt; /* Initiator Task Tag, opaque for target */
__be32 ttt; /* Target Task Tag */
@@ -123,7 +115,7 @@ struct iscsi_cmd {
uint8_t flags;
__be16 rsvd2;
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t lun[8];
itt_t itt; /* Initiator Task Tag */
__be32 data_length;
@@ -169,7 +161,7 @@ struct iscsi_cmd_rsp {
uint8_t response;
uint8_t cmd_status;
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t rsvd[8];
itt_t itt; /* Initiator Task Tag */
__be32 rsvd1;
@@ -199,7 +191,7 @@ struct iscsi_async {
uint8_t flags;
uint8_t rsvd2[2];
uint8_t rsvd3;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t lun[8];
uint8_t rsvd4[8];
__be32 statsn;
@@ -227,7 +219,7 @@ struct iscsi_nopout {
uint8_t flags;
__be16 rsvd2;
uint8_t rsvd3;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t lun[8];
itt_t itt; /* Initiator Task Tag */
__be32 ttt; /* Target Transfer Tag */
@@ -242,7 +234,7 @@ struct iscsi_nopin {
uint8_t flags;
__be16 rsvd2;
uint8_t rsvd3;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t lun[8];
itt_t itt; /* Initiator Task Tag */
__be32 ttt; /* Target Transfer Tag */
@@ -258,7 +250,7 @@ struct iscsi_tm {
uint8_t flags;
uint8_t rsvd1[2];
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t lun[8];
itt_t itt; /* Initiator Task Tag */
itt_t rtt; /* Reference Task Tag */
@@ -288,7 +280,7 @@ struct iscsi_tm_rsp {
uint8_t response; /* see Response values below */
uint8_t qualifier;
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t rsvd2[8];
itt_t itt; /* Initiator Task Tag */
itt_t rtt; /* Reference Task Tag */
@@ -314,7 +306,7 @@ struct iscsi_r2t_rsp {
uint8_t flags;
uint8_t rsvd2[2];
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t lun[8];
itt_t itt; /* Initiator Task Tag */
__be32 ttt; /* Target Transfer Tag */
@@ -332,7 +324,7 @@ struct iscsi_data {
uint8_t flags;
uint8_t rsvd2[2];
uint8_t rsvd3;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t lun[8];
itt_t itt;
__be32 ttt;
@@ -352,7 +344,7 @@ struct iscsi_data_rsp {
uint8_t rsvd2;
uint8_t cmd_status;
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t lun[8];
itt_t itt;
__be32 ttt;
@@ -376,7 +368,7 @@ struct iscsi_text {
uint8_t flags;
uint8_t rsvd2[2];
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t rsvd4[8];
itt_t itt;
__be32 ttt;
@@ -394,7 +386,7 @@ struct iscsi_text_rsp {
uint8_t flags;
uint8_t rsvd2[2];
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t rsvd4[8];
itt_t itt;
__be32 ttt;
@@ -412,7 +404,7 @@ struct iscsi_login {
uint8_t max_version; /* Max. version supported */
uint8_t min_version; /* Min. version supported */
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t isid[6]; /* Initiator Session ID */
__be16 tsih; /* Target Session Handle */
itt_t itt; /* Initiator Task Tag */
@@ -441,7 +433,7 @@ struct iscsi_login_rsp {
uint8_t max_version; /* Max. version supported */
uint8_t active_version; /* Active version */
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t isid[6]; /* Initiator Session ID */
__be16 tsih; /* Target Session Handle */
itt_t itt; /* Initiator Task Tag */
@@ -499,7 +491,7 @@ struct iscsi_logout {
uint8_t flags;
uint8_t rsvd1[2];
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t rsvd2[8];
itt_t itt; /* Initiator Task Tag */
__be16 cid;
@@ -526,7 +518,7 @@ struct iscsi_logout_rsp {
uint8_t response; /* see Logout response values below */
uint8_t rsvd2;
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t rsvd3[8];
itt_t itt; /* Initiator Task Tag */
__be32 rsvd4;
@@ -570,7 +562,7 @@ struct iscsi_reject {
uint8_t reason;
uint8_t rsvd2;
uint8_t hlength;
- uint8_t dlength[3];
+ __be24 dlength;
uint8_t rsvd3[8];
__be32 ffffffff;
uint8_t rsvd4[4];
--
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