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Date: Sat, 23 Jul 2011 15:34:44 +0200 (CEST)
From: Jesper Juhl <jj@...osbits.net>
To: "Nicholas A. Bellinger" <nab@...ux-iscsi.org>
cc: target-devel <target-devel@...r.kernel.org>,
linux-scsi <linux-scsi@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
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>
Subject: Re: [PATCH 01/13] iscsi: Resolve iscsi_proto.h naming conflicts with
drivers/target/iscsi
On Sat, 23 Jul 2011, Nicholas A. Bellinger wrote:
> 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;
How about getting rid of the extra spaces around the '=' while you are at
it?
- struct iscsi_cmd *hdr = (struct iscsi_cmd *)task->hdr;
- struct scsi_cmnd *sc = task->sc;
+ 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;
Kill the space after the cast
+ 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 */
>
--
Jesper Juhl <jj@...osbits.net> http://www.chaosbits.net/
Don't top-post http://www.catb.org/jargon/html/T/top-post.html
Plain text mails only, please.
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