From 66c7db687631247b7a3493322b9aedeef3c6c7b5 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 26 Sep 2012 08:00:39 -0400 Subject: [PATCH] iscsit: use the itt_t abstract type Use the special itt_t type defined by the iscsi headers and the initiator to make sure it's an opaque value. Signed-off-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger --- drivers/target/iscsi/iscsi_target.c | 36 ++++++++------------ drivers/target/iscsi/iscsi_target_configfs.c | 3 +- drivers/target/iscsi/iscsi_target_core.h | 8 ++--- drivers/target/iscsi/iscsi_target_erl1.c | 4 +-- drivers/target/iscsi/iscsi_target_erl1.h | 4 +-- drivers/target/iscsi/iscsi_target_login.c | 2 +- drivers/target/iscsi/iscsi_target_nego.c | 6 ++-- drivers/target/iscsi/iscsi_target_tmr.c | 4 +-- drivers/target/iscsi/iscsi_target_util.c | 10 +++--- drivers/target/iscsi/iscsi_target_util.h | 6 ++-- 10 files changed, 37 insertions(+), 46 deletions(-) diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 2e7bf7a51e7f..1c843b51f261 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -785,7 +785,6 @@ static int iscsit_handle_scsi_cmd( hdr = (struct iscsi_scsi_req *) buf; payload_length = ntoh24(hdr->dlength); - hdr->itt = be32_to_cpu(hdr->itt); hdr->data_length = be32_to_cpu(hdr->data_length); hdr->cmdsn = be32_to_cpu(hdr->cmdsn); hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn); @@ -1194,7 +1193,6 @@ static int iscsit_handle_data_out(struct iscsi_conn *conn, unsigned char *buf) hdr = (struct iscsi_data *) buf; payload_length = ntoh24(hdr->dlength); - hdr->itt = be32_to_cpu(hdr->itt); hdr->ttt = be32_to_cpu(hdr->ttt); hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn); hdr->datasn = be32_to_cpu(hdr->datasn); @@ -1425,12 +1423,11 @@ static int iscsit_handle_nop_out( hdr = (struct iscsi_nopout *) buf; payload_length = ntoh24(hdr->dlength); - hdr->itt = be32_to_cpu(hdr->itt); hdr->ttt = be32_to_cpu(hdr->ttt); hdr->cmdsn = be32_to_cpu(hdr->cmdsn); hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn); - if ((hdr->itt == 0xFFFFFFFF) && !(hdr->opcode & ISCSI_OP_IMMEDIATE)) { + if (hdr->itt == RESERVED_ITT && !(hdr->opcode & ISCSI_OP_IMMEDIATE)) { pr_err("NOPOUT ITT is reserved, but Immediate Bit is" " not set, protocol error.\n"); return iscsit_add_reject(ISCSI_REASON_PROTOCOL_ERROR, 1, @@ -1448,7 +1445,7 @@ static int iscsit_handle_nop_out( pr_debug("Got NOPOUT Ping %s ITT: 0x%08x, TTT: 0x%09x," " CmdSN: 0x%08x, ExpStatSN: 0x%08x, Length: %u\n", - (hdr->itt == 0xFFFFFFFF) ? "Response" : "Request", + hdr->itt == RESERVED_ITT ? "Response" : "Request", hdr->itt, hdr->ttt, hdr->cmdsn, hdr->exp_statsn, payload_length); /* @@ -1556,7 +1553,7 @@ static int iscsit_handle_nop_out( pr_debug("Ping Data: \"%s\"\n", ping_data); } - if (hdr->itt != 0xFFFFFFFF) { + if (hdr->itt != RESERVED_ITT) { if (!cmd) { pr_err("Checking CmdSN for NOPOUT," " but cmd is NULL!\n"); @@ -1639,8 +1636,6 @@ static int iscsit_handle_task_mgt_cmd( u8 function; hdr = (struct iscsi_tm *) buf; - hdr->itt = be32_to_cpu(hdr->itt); - hdr->rtt = be32_to_cpu(hdr->rtt); hdr->cmdsn = be32_to_cpu(hdr->cmdsn); hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn); hdr->refcmdsn = be32_to_cpu(hdr->refcmdsn); @@ -1655,9 +1650,9 @@ static int iscsit_handle_task_mgt_cmd( if ((function != ISCSI_TM_FUNC_ABORT_TASK) && ((function != ISCSI_TM_FUNC_TASK_REASSIGN) && - (hdr->rtt != ISCSI_RESERVED_TAG))) { + hdr->rtt != RESERVED_ITT)) { pr_err("RefTaskTag should be set to 0xFFFFFFFF.\n"); - hdr->rtt = ISCSI_RESERVED_TAG; + hdr->rtt = RESERVED_ITT; } if ((function == ISCSI_TM_FUNC_TASK_REASSIGN) && @@ -1869,7 +1864,6 @@ static int iscsit_handle_text_cmd( hdr = (struct iscsi_text *) buf; payload_length = ntoh24(hdr->dlength); - hdr->itt = be32_to_cpu(hdr->itt); hdr->ttt = be32_to_cpu(hdr->ttt); hdr->cmdsn = be32_to_cpu(hdr->cmdsn); hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn); @@ -2131,7 +2125,6 @@ static int iscsit_handle_logout_cmd( hdr = (struct iscsi_logout *) buf; reason_code = (hdr->flags & 0x7f); - hdr->itt = be32_to_cpu(hdr->itt); hdr->cid = be16_to_cpu(hdr->cid); hdr->cmdsn = be32_to_cpu(hdr->cmdsn); hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn); @@ -2219,7 +2212,6 @@ static int iscsit_handle_snack( hdr = (struct iscsi_snack *) buf; hdr->flags &= ~ISCSI_FLAG_CMD_FINAL; - hdr->itt = be32_to_cpu(hdr->itt); hdr->ttt = be32_to_cpu(hdr->ttt); hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn); hdr->begrun = be32_to_cpu(hdr->begrun); @@ -2414,7 +2406,7 @@ static int iscsit_send_conn_drop_async_message( hdr = (struct iscsi_async *) cmd->pdu; hdr->opcode = ISCSI_OP_ASYNC_EVENT; hdr->flags = ISCSI_FLAG_CMD_FINAL; - cmd->init_task_tag = 0xFFFFFFFF; + cmd->init_task_tag = RESERVED_ITT; cmd->targ_xfer_tag = 0xFFFFFFFF; put_unaligned_be64(0xFFFFFFFFFFFFFFFFULL, &hdr->rsvd4[0]); cmd->stat_sn = conn->stat_sn++; @@ -2536,7 +2528,7 @@ static int iscsit_send_data_in( else put_unaligned_le64(0xFFFFFFFFFFFFFFFFULL, &hdr->lun); - hdr->itt = cpu_to_be32(cmd->init_task_tag); + hdr->itt = cmd->init_task_tag; hdr->ttt = (hdr->flags & ISCSI_FLAG_DATA_ACK) ? cpu_to_be32(cmd->targ_xfer_tag) : 0xFFFFFFFF; @@ -2708,7 +2700,7 @@ static int iscsit_send_logout_response( hdr->opcode = ISCSI_OP_LOGOUT_RSP; hdr->flags |= ISCSI_FLAG_CMD_FINAL; hdr->response = cmd->logout_response; - hdr->itt = cpu_to_be32(cmd->init_task_tag); + hdr->itt = cmd->init_task_tag; cmd->stat_sn = conn->stat_sn++; hdr->statsn = cpu_to_be32(cmd->stat_sn); @@ -2759,7 +2751,7 @@ static int iscsit_send_unsolicited_nopin( memset(hdr, 0, ISCSI_HDR_LEN); hdr->opcode = ISCSI_OP_NOOP_IN; hdr->flags |= ISCSI_FLAG_CMD_FINAL; - hdr->itt = cpu_to_be32(cmd->init_task_tag); + hdr->itt = cmd->init_task_tag; hdr->ttt = cpu_to_be32(cmd->targ_xfer_tag); cmd->stat_sn = conn->stat_sn; hdr->statsn = cpu_to_be32(cmd->stat_sn); @@ -2816,7 +2808,7 @@ static int iscsit_send_nopin_response( hdr->flags |= ISCSI_FLAG_CMD_FINAL; hton24(hdr->dlength, cmd->buf_ptr_size); put_unaligned_le64(0xFFFFFFFFFFFFFFFFULL, &hdr->lun); - hdr->itt = cpu_to_be32(cmd->init_task_tag); + hdr->itt = cmd->init_task_tag; hdr->ttt = cpu_to_be32(cmd->targ_xfer_tag); cmd->stat_sn = conn->stat_sn++; hdr->statsn = cpu_to_be32(cmd->stat_sn); @@ -2906,7 +2898,7 @@ static int iscsit_send_r2t( hdr->flags |= ISCSI_FLAG_CMD_FINAL; int_to_scsilun(cmd->se_cmd.orig_fe_lun, (struct scsi_lun *)&hdr->lun); - hdr->itt = cpu_to_be32(cmd->init_task_tag); + hdr->itt = cmd->init_task_tag; spin_lock_bh(&conn->sess->ttt_lock); r2t->targ_xfer_tag = conn->sess->targ_xfer_tag++; if (r2t->targ_xfer_tag == 0xFFFFFFFF) @@ -3074,7 +3066,7 @@ static int iscsit_send_status( } hdr->response = cmd->iscsi_response; hdr->cmd_status = cmd->se_cmd.scsi_status; - hdr->itt = cpu_to_be32(cmd->init_task_tag); + hdr->itt = cmd->init_task_tag; hdr->statsn = cpu_to_be32(cmd->stat_sn); iscsit_increment_maxcmdsn(cmd, conn->sess); @@ -3187,7 +3179,7 @@ static int iscsit_send_task_mgt_rsp( hdr->opcode = ISCSI_OP_SCSI_TMFUNC_RSP; hdr->flags = ISCSI_FLAG_CMD_FINAL; hdr->response = iscsit_convert_tcm_tmr_rsp(se_tmr); - hdr->itt = cpu_to_be32(cmd->init_task_tag); + hdr->itt = cmd->init_task_tag; cmd->stat_sn = conn->stat_sn++; hdr->statsn = cpu_to_be32(cmd->stat_sn); @@ -3360,7 +3352,7 @@ static int iscsit_send_text_rsp( hdr->opcode = ISCSI_OP_TEXT_RSP; hdr->flags |= ISCSI_FLAG_CMD_FINAL; hton24(hdr->dlength, text_length); - hdr->itt = cpu_to_be32(cmd->init_task_tag); + hdr->itt = cmd->init_task_tag; hdr->ttt = cpu_to_be32(cmd->targ_xfer_tag); cmd->stat_sn = conn->stat_sn++; hdr->statsn = cpu_to_be32(cmd->stat_sn); diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c index 8c9955f51c5d..ff6fd4fb624d 100644 --- a/drivers/target/iscsi/iscsi_target_configfs.c +++ b/drivers/target/iscsi/iscsi_target_configfs.c @@ -1475,7 +1475,8 @@ static u32 iscsi_get_task_tag(struct se_cmd *se_cmd) { struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); - return cmd->init_task_tag; + /* only used for printks or comparism with ->ref_task_tag */ + return (__force u32)cmd->init_task_tag; } static int iscsi_get_cmd_state(struct se_cmd *se_cmd) diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h index e6a830545c89..226fe62d4e61 100644 --- a/drivers/target/iscsi/iscsi_target_core.h +++ b/drivers/target/iscsi/iscsi_target_core.h @@ -361,7 +361,7 @@ struct iscsi_cmd { /* Command flags */ enum cmd_flags_table cmd_flags; /* Initiator Task Tag assigned from Initiator */ - u32 init_task_tag; + itt_t init_task_tag; /* Target Transfer Tag assigned from Target */ u32 targ_xfer_tag; /* CmdSN assigned from Initiator */ @@ -506,7 +506,7 @@ struct iscsi_conn { u32 auth_id; u32 conn_flags; /* Used for iscsi_tx_login_rsp() */ - u32 login_itt; + itt_t login_itt; u32 exp_statsn; /* Per connection status sequence number */ u32 stat_sn; @@ -599,7 +599,7 @@ struct iscsi_session { /* state session is currently in */ u32 session_state; /* session wide counter: initiator assigned task tag */ - u32 init_task_tag; + itt_t init_task_tag; /* session wide counter: target assigned task tag */ u32 targ_xfer_tag; u32 cmdsn_window; @@ -665,7 +665,7 @@ struct iscsi_login { u8 version_max; char isid[6]; u32 cmd_sn; - u32 init_task_tag; + itt_t init_task_tag; u32 initial_exp_statsn; u32 rsp_length; u16 cid; diff --git a/drivers/target/iscsi/iscsi_target_erl1.c b/drivers/target/iscsi/iscsi_target_erl1.c index 3df8a2cef86f..21f29d91a8cb 100644 --- a/drivers/target/iscsi/iscsi_target_erl1.c +++ b/drivers/target/iscsi/iscsi_target_erl1.c @@ -466,7 +466,7 @@ static int iscsit_handle_recovery_datain( int iscsit_handle_recovery_datain_or_r2t( struct iscsi_conn *conn, unsigned char *buf, - u32 init_task_tag, + itt_t init_task_tag, u32 targ_xfer_tag, u32 begrun, u32 runlength) @@ -498,7 +498,7 @@ int iscsit_handle_recovery_datain_or_r2t( /* #warning FIXME: Status SNACK needs to be dependent on OPCODE!!! */ int iscsit_handle_status_snack( struct iscsi_conn *conn, - u32 init_task_tag, + itt_t init_task_tag, u32 targ_xfer_tag, u32 begrun, u32 runlength) diff --git a/drivers/target/iscsi/iscsi_target_erl1.h b/drivers/target/iscsi/iscsi_target_erl1.h index 85e67e29de6b..2a3ebf118a34 100644 --- a/drivers/target/iscsi/iscsi_target_erl1.h +++ b/drivers/target/iscsi/iscsi_target_erl1.h @@ -7,8 +7,8 @@ extern int iscsit_create_recovery_datain_values_datasequenceinorder_yes( extern int iscsit_create_recovery_datain_values_datasequenceinorder_no( struct iscsi_cmd *, struct iscsi_datain_req *); extern int iscsit_handle_recovery_datain_or_r2t(struct iscsi_conn *, unsigned char *, - u32, u32, u32, u32); -extern int iscsit_handle_status_snack(struct iscsi_conn *, u32, u32, + itt_t, u32, u32, u32); +extern int iscsit_handle_status_snack(struct iscsi_conn *, itt_t, u32, u32, u32); extern int iscsit_handle_data_ack(struct iscsi_conn *, u32, u32, u32); extern int iscsit_dataout_datapduinorder_no_fbit(struct iscsi_cmd *, struct iscsi_pdu *); diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c index 1e5d05011915..4c83d7a39bf3 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -953,9 +953,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np) pdu = (struct iscsi_login_req *) buffer; pdu->cid = be16_to_cpu(pdu->cid); pdu->tsih = be16_to_cpu(pdu->tsih); - pdu->itt = be32_to_cpu(pdu->itt); pdu->cmdsn = be32_to_cpu(pdu->cmdsn); pdu->exp_statsn = be32_to_cpu(pdu->exp_statsn); + /* * Used by iscsit_tx_login_rsp() for Login Resonses PDUs * when Status-Class != 0. diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c index 42b1c50d296a..33ed9b5209cd 100644 --- a/drivers/target/iscsi/iscsi_target_nego.c +++ b/drivers/target/iscsi/iscsi_target_nego.c @@ -339,14 +339,14 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log hton24(login_rsp->dlength, login->rsp_length); memcpy(login_rsp->isid, login->isid, 6); login_rsp->tsih = cpu_to_be16(login->tsih); - login_rsp->itt = cpu_to_be32(login->init_task_tag); + login_rsp->itt = login->init_task_tag; login_rsp->statsn = cpu_to_be32(conn->stat_sn++); login_rsp->exp_cmdsn = cpu_to_be32(conn->sess->exp_cmd_sn); login_rsp->max_cmdsn = cpu_to_be32(conn->sess->max_cmd_sn); pr_debug("Sending Login Response, Flags: 0x%02x, ITT: 0x%08x," " ExpCmdSN; 0x%08x, MaxCmdSN: 0x%08x, StatSN: 0x%08x, Length:" - " %u\n", login_rsp->flags, ntohl(login_rsp->itt), + " %u\n", login_rsp->flags, (__force u32)login_rsp->itt, ntohl(login_rsp->exp_cmdsn), ntohl(login_rsp->max_cmdsn), ntohl(login_rsp->statsn), login->rsp_length); @@ -361,7 +361,6 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log login->rsp_length = 0; login_rsp->tsih = be16_to_cpu(login_rsp->tsih); - login_rsp->itt = be32_to_cpu(login_rsp->itt); login_rsp->statsn = be32_to_cpu(login_rsp->statsn); mutex_lock(&sess->cmdsn_mutex); login_rsp->exp_cmdsn = be32_to_cpu(sess->exp_cmd_sn); @@ -382,7 +381,6 @@ static int iscsi_target_do_rx_login_io(struct iscsi_conn *conn, struct iscsi_log login_req = (struct iscsi_login_req *) login->req; payload_length = ntoh24(login_req->dlength); login_req->tsih = be16_to_cpu(login_req->tsih); - login_req->itt = be32_to_cpu(login_req->itt); login_req->cid = be16_to_cpu(login_req->cid); login_req->cmdsn = be32_to_cpu(login_req->cmdsn); login_req->exp_statsn = be32_to_cpu(login_req->exp_statsn); diff --git a/drivers/target/iscsi/iscsi_target_tmr.c b/drivers/target/iscsi/iscsi_target_tmr.c index f15462bfafd2..925f829a3704 100644 --- a/drivers/target/iscsi/iscsi_target_tmr.c +++ b/drivers/target/iscsi/iscsi_target_tmr.c @@ -61,7 +61,7 @@ u8 iscsit_tmr_abort_task( return ISCSI_TMF_RSP_REJECTED; } - se_tmr->ref_task_tag = hdr->rtt; + se_tmr->ref_task_tag = (__force u32)hdr->rtt; tmr_req->ref_cmd = ref_cmd; tmr_req->ref_cmd_sn = hdr->refcmdsn; tmr_req->exp_data_sn = hdr->exp_datasn; @@ -171,7 +171,7 @@ u8 iscsit_tmr_task_reassign( return ISCSI_TMF_RSP_REJECTED; } - se_tmr->ref_task_tag = hdr->rtt; + se_tmr->ref_task_tag = (__force u32)hdr->rtt; tmr_req->ref_cmd = ref_cmd; tmr_req->ref_cmd_sn = hdr->refcmdsn; tmr_req->exp_data_sn = hdr->exp_datasn; diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index b42cdeb153df..22bec9e899c0 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -351,7 +351,7 @@ int iscsit_check_unsolicited_dataout(struct iscsi_cmd *cmd, unsigned char *buf) struct iscsi_cmd *iscsit_find_cmd_from_itt( struct iscsi_conn *conn, - u32 init_task_tag) + itt_t init_task_tag) { struct iscsi_cmd *cmd; @@ -371,7 +371,7 @@ struct iscsi_cmd *iscsit_find_cmd_from_itt( struct iscsi_cmd *iscsit_find_cmd_from_itt_or_dump( struct iscsi_conn *conn, - u32 init_task_tag, + itt_t init_task_tag, u32 length) { struct iscsi_cmd *cmd; @@ -417,7 +417,7 @@ int iscsit_find_cmd_for_recovery( struct iscsi_session *sess, struct iscsi_cmd **cmd_ptr, struct iscsi_conn_recovery **cr_ptr, - u32 init_task_tag) + itt_t init_task_tag) { struct iscsi_cmd *cmd = NULL; struct iscsi_conn_recovery *cr; @@ -855,7 +855,7 @@ static int iscsit_add_nopin(struct iscsi_conn *conn, int want_response) cmd->iscsi_opcode = ISCSI_OP_NOOP_IN; state = (want_response) ? ISTATE_SEND_NOPIN_WANT_RESPONSE : ISTATE_SEND_NOPIN_NO_RESPONSE; - cmd->init_task_tag = 0xFFFFFFFF; + cmd->init_task_tag = RESERVED_ITT; spin_lock_bh(&conn->sess->ttt_lock); cmd->targ_xfer_tag = (want_response) ? conn->sess->targ_xfer_tag++ : 0xFFFFFFFF; @@ -1222,7 +1222,7 @@ int iscsit_tx_login_rsp(struct iscsi_conn *conn, u8 status_class, u8 status_deta hdr->opcode = ISCSI_OP_LOGIN_RSP; hdr->status_class = status_class; hdr->status_detail = status_detail; - hdr->itt = cpu_to_be32(conn->login_itt); + hdr->itt = conn->login_itt; iov.iov_base = &iscsi_hdr; iov.iov_len = ISCSI_HDR_LEN; diff --git a/drivers/target/iscsi/iscsi_target_util.h b/drivers/target/iscsi/iscsi_target_util.h index e1c729b8a1c5..09e2f9f563a7 100644 --- a/drivers/target/iscsi/iscsi_target_util.h +++ b/drivers/target/iscsi/iscsi_target_util.h @@ -14,12 +14,12 @@ extern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsi_cmd *); extern struct iscsi_r2t *iscsit_get_holder_for_r2tsn(struct iscsi_cmd *, u32); int iscsit_sequence_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, u32 cmdsn); extern int iscsit_check_unsolicited_dataout(struct iscsi_cmd *, unsigned char *); -extern struct iscsi_cmd *iscsit_find_cmd_from_itt(struct iscsi_conn *, u32); +extern struct iscsi_cmd *iscsit_find_cmd_from_itt(struct iscsi_conn *, itt_t); extern struct iscsi_cmd *iscsit_find_cmd_from_itt_or_dump(struct iscsi_conn *, - u32, u32); + itt_t, u32); extern struct iscsi_cmd *iscsit_find_cmd_from_ttt(struct iscsi_conn *, u32); extern int iscsit_find_cmd_for_recovery(struct iscsi_session *, struct iscsi_cmd **, - struct iscsi_conn_recovery **, u32); + struct iscsi_conn_recovery **, itt_t); extern void iscsit_add_cmd_to_immediate_queue(struct iscsi_cmd *, struct iscsi_conn *, u8); extern struct iscsi_queue_req *iscsit_get_cmd_from_immediate_queue(struct iscsi_conn *); extern void iscsit_add_cmd_to_response_queue(struct iscsi_cmd *, struct iscsi_conn *, u8); -- 2.39.5