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Message-Id: <1311410747-29947-2-git-send-email-nab@linux-iscsi.org>
Date: Sat, 23 Jul 2011 08:45:35 +0000
From: "Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To: target-devel <target-devel@...r.kernel.org>,
linux-scsi <linux-scsi@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>
Cc: Christoph Hellwig <hch@....de>, Andy Grover <agrover@...hat.com>,
Hannes Reinecke <hare@...e.de>,
Roland Dreier <roland@...estorage.com>,
James Bottomley <James.Bottomley@...senPartnership.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Nicholas Bellinger <nab@...ux-iscsi.org>
Subject: [PATCH 01/13] iscsi: Resolve iscsi_proto.h naming conflicts with drivers/target/iscsi
From: Nicholas Bellinger <nab@...ux-iscsi.org>
This patch renames the following iscsi_proto.h structures to avoid
namespace issues with drivers/target/iscsi/iscsi_target_core.h:
*) struct iscsi_cmd -> struct iscsi_scsi_req
*) struct iscsi_cmd_rsp -> struct iscsi_scsi_rsp
*) struct iscsi_login -> struct iscsi_login_req
This patch includes useful ISCSI_FLAG_LOGIN_[CURRENT,NEXT]_STAGE*,
and ISCSI_FLAG_SNACK_TYPE_* definitions used by iscsi_target_mod, and
fixes the incorrect definition of struct iscsi_snack to following
RFC-3720 Section 10.16. SNACK Request.
Also, this patch updates libiscsi, iSER, be2iscsi, and bn2xi to
use the updated structure definitions in a handful of locations.
Signed-off-by: Mike Christie <michaelc@...wisc.edu>
Signed-off-by: Nicholas A. Bellinger <nab@...ux-iscsi.org>
---
drivers/infiniband/ulp/iser/iser_initiator.c | 2 +-
drivers/scsi/be2iscsi/be_main.h | 4 +-
drivers/scsi/bnx2i/bnx2i_hwi.c | 8 +++---
drivers/scsi/libiscsi.c | 6 ++--
include/scsi/iscsi_proto.h | 30 +++++++++++++++++++-------
5 files changed, 32 insertions(+), 18 deletions(-)
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
index 95a08a8..d73bab3 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -271,7 +271,7 @@ int iser_send_command(struct iscsi_conn *conn,
unsigned long edtl;
int err;
struct iser_data_buf *data_buf;
- struct iscsi_cmd *hdr = (struct iscsi_cmd *)task->hdr;
+ struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;
struct scsi_cmnd *sc = task->sc;
struct iser_tx_desc *tx_desc = &iser_task->desc;
diff --git a/drivers/scsi/be2iscsi/be_main.h b/drivers/scsi/be2iscsi/be_main.h
index 081c171..5ce5170 100644
--- a/drivers/scsi/be2iscsi/be_main.h
+++ b/drivers/scsi/be2iscsi/be_main.h
@@ -397,7 +397,7 @@ struct amap_pdu_data_out {
};
struct be_cmd_bhs {
- struct iscsi_cmd iscsi_hdr;
+ struct iscsi_scsi_req iscsi_hdr;
unsigned char pad1[16];
struct pdu_data_out iscsi_data_pdu;
unsigned char pad2[BE_SENSE_INFO_SIZE -
@@ -428,7 +428,7 @@ struct be_nonio_bhs {
};
struct be_status_bhs {
- struct iscsi_cmd iscsi_hdr;
+ struct iscsi_scsi_req iscsi_hdr;
unsigned char pad1[16];
/**
* The plus 2 below is to hold the sense info length that gets
diff --git a/drivers/scsi/bnx2i/bnx2i_hwi.c b/drivers/scsi/bnx2i/bnx2i_hwi.c
index 372d30c..1b160e1 100644
--- a/drivers/scsi/bnx2i/bnx2i_hwi.c
+++ b/drivers/scsi/bnx2i/bnx2i_hwi.c
@@ -328,11 +328,11 @@ int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn,
{
struct bnx2i_cmd *bnx2i_cmd;
struct bnx2i_login_request *login_wqe;
- struct iscsi_login *login_hdr;
+ struct iscsi_login_req *login_hdr;
u32 dword;
bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data;
- login_hdr = (struct iscsi_login *)task->hdr;
+ login_hdr = (struct iscsi_login_req *)task->hdr;
login_wqe = (struct bnx2i_login_request *)
bnx2i_conn->ep->qp.sq_prod_qe;
@@ -1344,7 +1344,7 @@ static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session,
struct bnx2i_cmd_response *resp_cqe;
struct bnx2i_cmd *bnx2i_cmd;
struct iscsi_task *task;
- struct iscsi_cmd_rsp *hdr;
+ struct iscsi_scsi_rsp *hdr;
u32 datalen = 0;
resp_cqe = (struct bnx2i_cmd_response *)cqe;
@@ -1371,7 +1371,7 @@ static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session,
}
bnx2i_iscsi_unmap_sg_list(bnx2i_cmd);
- hdr = (struct iscsi_cmd_rsp *)task->hdr;
+ hdr = (struct iscsi_scsi_rsp *)task->hdr;
resp_cqe = (struct bnx2i_cmd_response *)cqe;
hdr->opcode = resp_cqe->op_code;
hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn);
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 0c550d5..9c3cb4e 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -360,7 +360,7 @@ static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task)
struct iscsi_conn *conn = task->conn;
struct iscsi_session *session = conn->session;
struct scsi_cmnd *sc = task->sc;
- struct iscsi_cmd *hdr;
+ struct iscsi_scsi_req *hdr;
unsigned hdrlength, cmd_len;
itt_t itt;
int rc;
@@ -374,7 +374,7 @@ static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task)
if (rc)
return rc;
}
- hdr = (struct iscsi_cmd *) task->hdr;
+ hdr = (struct iscsi_scsi_req *) task->hdr;
itt = hdr->itt;
memset(hdr, 0, sizeof(*hdr));
@@ -830,7 +830,7 @@ static void iscsi_scsi_cmd_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
struct iscsi_task *task, char *data,
int datalen)
{
- struct iscsi_cmd_rsp *rhdr = (struct iscsi_cmd_rsp *)hdr;
+ struct iscsi_scsi_rsp *rhdr = (struct iscsi_scsi_rsp *)hdr;
struct iscsi_session *session = conn->session;
struct scsi_cmnd *sc = task->sc;
diff --git a/include/scsi/iscsi_proto.h b/include/scsi/iscsi_proto.h
index dd0a52c..a9c9058 100644
--- a/include/scsi/iscsi_proto.h
+++ b/include/scsi/iscsi_proto.h
@@ -116,7 +116,7 @@ struct iscsi_ahs_hdr {
#define ISCSI_CDB_SIZE 16
/* iSCSI PDU Header */
-struct iscsi_cmd {
+struct iscsi_scsi_req {
uint8_t opcode;
uint8_t flags;
__be16 rsvd2;
@@ -161,7 +161,7 @@ struct iscsi_ecdb_ahdr {
};
/* SCSI Response Header */
-struct iscsi_cmd_rsp {
+struct iscsi_scsi_rsp {
uint8_t opcode;
uint8_t flags;
uint8_t response;
@@ -406,7 +406,7 @@ struct iscsi_text_rsp {
};
/* Login Header */
-struct iscsi_login {
+struct iscsi_login_req {
uint8_t opcode;
uint8_t flags;
uint8_t max_version; /* Max. version supported */
@@ -427,7 +427,13 @@ struct iscsi_login {
#define ISCSI_FLAG_LOGIN_TRANSIT 0x80
#define ISCSI_FLAG_LOGIN_CONTINUE 0x40
#define ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK 0x0C /* 2 bits */
+#define ISCSI_FLAG_LOGIN_CURRENT_STAGE1 0x04
+#define ISCSI_FLAG_LOGIN_CURRENT_STAGE2 0x08
+#define ISCSI_FLAG_LOGIN_CURRENT_STAGE3 0x0C
#define ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK 0x03 /* 2 bits */
+#define ISCSI_FLAG_LOGIN_NEXT_STAGE1 0x01
+#define ISCSI_FLAG_LOGIN_NEXT_STAGE2 0x02
+#define ISCSI_FLAG_LOGIN_NEXT_STAGE3 0x03
#define ISCSI_LOGIN_CURRENT_STAGE(flags) \
((flags & ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK) >> 2)
@@ -550,17 +556,25 @@ struct iscsi_logout_rsp {
struct iscsi_snack {
uint8_t opcode;
uint8_t flags;
- uint8_t rsvd2[14];
+ uint8_t rsvd2[2];
+ uint8_t hlength;
+ uint8_t dlength[3];
+ uint8_t lun[8];
itt_t itt;
+ __be32 ttt;
+ uint8_t rsvd3[4];
+ __be32 exp_statsn;
+ uint8_t rsvd4[8];
__be32 begrun;
__be32 runlength;
- __be32 exp_statsn;
- __be32 rsvd3;
- __be32 exp_datasn;
- uint8_t rsvd6[8];
};
/* SNACK PDU flags */
+#define ISCSI_FLAG_SNACK_TYPE_DATA 0
+#define ISCSI_FLAG_SNACK_TYPE_R2T 0
+#define ISCSI_FLAG_SNACK_TYPE_STATUS 1
+#define ISCSI_FLAG_SNACK_TYPE_DATA_ACK 2
+#define ISCSI_FLAG_SNACK_TYPE_RDATA 3
#define ISCSI_FLAG_SNACK_TYPE_MASK 0x0F /* 4 bits */
/* Reject Message Header */
--
1.7.6
--
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