diff options
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target.c | 6 | ||||
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_login.c | 4 | ||||
| -rw-r--r-- | drivers/target/target_core_transport.c | 39 | ||||
| -rw-r--r-- | drivers/target/target_core_user.c | 50 | ||||
| -rw-r--r-- | drivers/target/target_core_xcopy.c | 34 | ||||
| -rw-r--r-- | drivers/target/tcm_fc/tfc_cmd.c | 4 | ||||
| -rw-r--r-- | drivers/target/tcm_fc/tfc_sess.c | 42 |
7 files changed, 104 insertions, 75 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 39b928c2849d..b7d747e92c7a 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -1804,6 +1804,10 @@ int iscsit_process_nop_out(struct iscsi_conn *conn, struct iscsi_cmd *cmd, * Otherwise, initiator is not expecting a NOPIN is response. * Just ignore for now. */ + + if (cmd) + iscsit_free_cmd(cmd, false); + return 0; } EXPORT_SYMBOL(iscsit_process_nop_out); @@ -2982,7 +2986,7 @@ iscsit_build_nopin_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn, pr_debug("Built NOPIN %s Response ITT: 0x%08x, TTT: 0x%08x," " StatSN: 0x%08x, Length %u\n", (nopout_response) ? - "Solicitied" : "Unsolicitied", cmd->init_task_tag, + "Solicited" : "Unsolicited", cmd->init_task_tag, cmd->targ_xfer_tag, cmd->stat_sn, cmd->buf_ptr_size); } EXPORT_SYMBOL(iscsit_build_nopin_rsp); diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c index adf419fa4291..15f79a2ca34a 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -434,7 +434,7 @@ static int iscsi_login_zero_tsih_s2( /* * Make MaxRecvDataSegmentLength PAGE_SIZE aligned for - * Immediate Data + Unsolicitied Data-OUT if necessary.. + * Immediate Data + Unsolicited Data-OUT if necessary.. */ param = iscsi_find_param_from_key("MaxRecvDataSegmentLength", conn->param_list); @@ -646,7 +646,7 @@ static void iscsi_post_login_start_timers(struct iscsi_conn *conn) { struct iscsi_session *sess = conn->sess; /* - * FIXME: Unsolicitied NopIN support for ISER + * FIXME: Unsolicited NopIN support for ISER */ if (conn->conn_transport->transport_type == ISCSI_INFINIBAND) return; diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 6094a6beddde..7dfefd66df93 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -754,15 +754,7 @@ EXPORT_SYMBOL(target_complete_cmd); void target_complete_cmd_with_length(struct se_cmd *cmd, u8 scsi_status, int length) { - if (scsi_status != SAM_STAT_GOOD) { - return; - } - - /* - * Calculate new residual count based upon length of SCSI data - * transferred. - */ - if (length < cmd->data_length) { + if (scsi_status == SAM_STAT_GOOD && length < cmd->data_length) { if (cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { cmd->residual_count += cmd->data_length - length; } else { @@ -771,12 +763,6 @@ void target_complete_cmd_with_length(struct se_cmd *cmd, u8 scsi_status, int len } cmd->data_length = length; - } else if (length > cmd->data_length) { - cmd->se_cmd_flags |= SCF_OVERFLOW_BIT; - cmd->residual_count = length - cmd->data_length; - } else { - cmd->se_cmd_flags &= ~(SCF_OVERFLOW_BIT | SCF_UNDERFLOW_BIT); - cmd->residual_count = 0; } target_complete_cmd(cmd, scsi_status); @@ -1706,6 +1692,7 @@ void transport_generic_request_failure(struct se_cmd *cmd, case TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED: case TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED: case TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED: + case TCM_COPY_TARGET_DEVICE_NOT_REACHABLE: break; case TCM_OUT_OF_RESOURCES: sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; @@ -2547,8 +2534,12 @@ int target_get_sess_cmd(struct se_cmd *se_cmd, bool ack_kref) * fabric acknowledgement that requires two target_put_sess_cmd() * invocations before se_cmd descriptor release. */ - if (ack_kref) - kref_get(&se_cmd->cmd_kref); + if (ack_kref) { + if (!kref_get_unless_zero(&se_cmd->cmd_kref)) + return -EINVAL; + + se_cmd->se_cmd_flags |= SCF_ACK_KREF; + } spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); if (se_sess->sess_tearing_down) { @@ -2627,7 +2618,7 @@ EXPORT_SYMBOL(target_put_sess_cmd); */ void target_sess_cmd_list_set_waiting(struct se_session *se_sess) { - struct se_cmd *se_cmd; + struct se_cmd *se_cmd, *tmp_cmd; unsigned long flags; int rc; @@ -2639,14 +2630,16 @@ void target_sess_cmd_list_set_waiting(struct se_session *se_sess) se_sess->sess_tearing_down = 1; list_splice_init(&se_sess->sess_cmd_list, &se_sess->sess_wait_list); - list_for_each_entry(se_cmd, &se_sess->sess_wait_list, se_cmd_list) { + list_for_each_entry_safe(se_cmd, tmp_cmd, + &se_sess->sess_wait_list, se_cmd_list) { rc = kref_get_unless_zero(&se_cmd->cmd_kref); if (rc) { se_cmd->cmd_wait_set = 1; spin_lock(&se_cmd->t_state_lock); se_cmd->transport_state |= CMD_T_FABRIC_STOP; spin_unlock(&se_cmd->t_state_lock); - } + } else + list_del_init(&se_cmd->se_cmd_list); } spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); @@ -2871,6 +2864,12 @@ static const struct sense_info sense_info_table[] = { .ascq = 0x03, /* LOGICAL BLOCK REFERENCE TAG CHECK FAILED */ .add_sector_info = true, }, + [TCM_COPY_TARGET_DEVICE_NOT_REACHABLE] = { + .key = COPY_ABORTED, + .asc = 0x0d, + .ascq = 0x02, /* COPY TARGET DEVICE NOT REACHABLE */ + + }, [TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE] = { /* * Returning ILLEGAL REQUEST would cause immediate IO errors on diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 62bf4fe5704a..47562509b489 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -96,7 +96,7 @@ struct tcmu_dev { size_t dev_size; u32 cmdr_size; u32 cmdr_last_cleaned; - /* Offset of data ring from start of mb */ + /* Offset of data area from start of mb */ /* Must add data_off and mb_addr to get the address */ size_t data_off; size_t data_size; @@ -349,7 +349,7 @@ static inline size_t spc_bitmap_free(unsigned long *bitmap) /* * We can't queue a command until we have space available on the cmd ring *and* - * space available on the data ring. + * space available on the data area. * * Called with ring lock held. */ @@ -389,7 +389,8 @@ static bool is_ring_space_avail(struct tcmu_dev *udev, size_t cmd_size, size_t d return true; } -static int tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd) +static sense_reason_t +tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd) { struct tcmu_dev *udev = tcmu_cmd->tcmu_dev; struct se_cmd *se_cmd = tcmu_cmd->se_cmd; @@ -405,7 +406,7 @@ static int tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd) DECLARE_BITMAP(old_bitmap, DATA_BLOCK_BITS); if (test_bit(TCMU_DEV_BIT_BROKEN, &udev->flags)) - return -EINVAL; + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; /* * Must be a certain minimum size for response sense info, but @@ -432,11 +433,14 @@ static int tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd) BUG_ON(!(se_cmd->t_bidi_data_sg && se_cmd->t_bidi_data_nents)); data_length += se_cmd->t_bidi_data_sg->length; } - if ((command_size > (udev->cmdr_size / 2)) - || data_length > udev->data_size) - pr_warn("TCMU: Request of size %zu/%zu may be too big for %u/%zu " - "cmd/data ring buffers\n", command_size, data_length, + if ((command_size > (udev->cmdr_size / 2)) || + data_length > udev->data_size) { + pr_warn("TCMU: Request of size %zu/%zu is too big for %u/%zu " + "cmd ring/data area\n", command_size, data_length, udev->cmdr_size, udev->data_size); + spin_unlock_irq(&udev->cmdr_lock); + return TCM_INVALID_CDB_FIELD; + } while (!is_ring_space_avail(udev, command_size, data_length)) { int ret; @@ -450,7 +454,7 @@ static int tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd) finish_wait(&udev->wait_cmdr, &__wait); if (!ret) { pr_warn("tcmu: command timed out\n"); - return -ETIMEDOUT; + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } spin_lock_irq(&udev->cmdr_lock); @@ -487,9 +491,7 @@ static int tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd) bitmap_copy(old_bitmap, udev->data_bitmap, DATA_BLOCK_BITS); - /* - * Fix up iovecs, and handle if allocation in data ring wrapped. - */ + /* Handle allocating space from the data area */ iov = &entry->req.iov[0]; iov_cnt = 0; copy_to_data_area = (se_cmd->data_direction == DMA_TO_DEVICE @@ -526,10 +528,11 @@ static int tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd) mod_timer(&udev->timeout, round_jiffies_up(jiffies + msecs_to_jiffies(TCMU_TIME_OUT))); - return 0; + return TCM_NO_SENSE; } -static int tcmu_queue_cmd(struct se_cmd *se_cmd) +static sense_reason_t +tcmu_queue_cmd(struct se_cmd *se_cmd) { struct se_device *se_dev = se_cmd->se_dev; struct tcmu_dev *udev = TCMU_DEV(se_dev); @@ -538,10 +541,10 @@ static int tcmu_queue_cmd(struct se_cmd *se_cmd) tcmu_cmd = tcmu_alloc_cmd(se_cmd); if (!tcmu_cmd) - return -ENOMEM; + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; ret = tcmu_queue_cmd_ring(tcmu_cmd); - if (ret < 0) { + if (ret != TCM_NO_SENSE) { pr_err("TCMU: Could not queue command\n"); spin_lock_irq(&udev->commands_lock); idr_remove(&udev->commands, tcmu_cmd->cmd_id); @@ -561,7 +564,7 @@ static void tcmu_handle_completion(struct tcmu_cmd *cmd, struct tcmu_cmd_entry * if (test_bit(TCMU_CMD_BIT_EXPIRED, &cmd->flags)) { /* * cmd has been completed already from timeout, just reclaim - * data ring space and free cmd + * data area space and free cmd */ free_data_area(udev, cmd); @@ -1129,20 +1132,9 @@ static sector_t tcmu_get_blocks(struct se_device *dev) } static sense_reason_t -tcmu_pass_op(struct se_cmd *se_cmd) -{ - int ret = tcmu_queue_cmd(se_cmd); - - if (ret != 0) - return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; - else - return TCM_NO_SENSE; -} - -static sense_reason_t tcmu_parse_cdb(struct se_cmd *cmd) { - return passthrough_parse_cdb(cmd, tcmu_pass_op); + return passthrough_parse_cdb(cmd, tcmu_queue_cmd); } static const struct target_backend_ops tcmu_ops = { diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c index 75cd85426ae3..094a1440eacb 100644 --- a/drivers/target/target_core_xcopy.c +++ b/drivers/target/target_core_xcopy.c @@ -104,7 +104,7 @@ static int target_xcopy_locate_se_dev_e4(struct se_cmd *se_cmd, struct xcopy_op } mutex_unlock(&g_device_mutex); - pr_err("Unable to locate 0xe4 descriptor for EXTENDED_COPY\n"); + pr_debug_ratelimited("Unable to locate 0xe4 descriptor for EXTENDED_COPY\n"); return -EINVAL; } @@ -185,7 +185,7 @@ static int target_xcopy_parse_tiddesc_e4(struct se_cmd *se_cmd, struct xcopy_op static int target_xcopy_parse_target_descriptors(struct se_cmd *se_cmd, struct xcopy_op *xop, unsigned char *p, - unsigned short tdll) + unsigned short tdll, sense_reason_t *sense_ret) { struct se_device *local_dev = se_cmd->se_dev; unsigned char *desc = p; @@ -193,6 +193,8 @@ static int target_xcopy_parse_target_descriptors(struct se_cmd *se_cmd, unsigned short start = 0; bool src = true; + *sense_ret = TCM_INVALID_PARAMETER_LIST; + if (offset != 0) { pr_err("XCOPY target descriptor list length is not" " multiple of %d\n", XCOPY_TARGET_DESC_LEN); @@ -243,9 +245,16 @@ static int target_xcopy_parse_target_descriptors(struct se_cmd *se_cmd, rc = target_xcopy_locate_se_dev_e4(se_cmd, xop, true); else rc = target_xcopy_locate_se_dev_e4(se_cmd, xop, false); - - if (rc < 0) + /* + * If a matching IEEE NAA 0x83 descriptor for the requested device + * is not located on this node, return COPY_ABORTED with ASQ/ASQC + * 0x0d/0x02 - COPY_TARGET_DEVICE_NOT_REACHABLE to request the + * initiator to fall back to normal copy method. + */ + if (rc < 0) { + *sense_ret = TCM_COPY_TARGET_DEVICE_NOT_REACHABLE; goto out; + } pr_debug("XCOPY TGT desc: Source dev: %p NAA IEEE WWN: 0x%16phN\n", xop->src_dev, &xop->src_tid_wwn[0]); @@ -653,6 +662,7 @@ static int target_xcopy_read_source( rc = target_xcopy_setup_pt_cmd(xpt_cmd, xop, src_dev, &cdb[0], remote_port, true); if (rc < 0) { + ec_cmd->scsi_status = xpt_cmd->se_cmd.scsi_status; transport_generic_free_cmd(se_cmd, 0); return rc; } @@ -664,6 +674,7 @@ static int target_xcopy_read_source( rc = target_xcopy_issue_pt_cmd(xpt_cmd); if (rc < 0) { + ec_cmd->scsi_status = xpt_cmd->se_cmd.scsi_status; transport_generic_free_cmd(se_cmd, 0); return rc; } @@ -714,6 +725,7 @@ static int target_xcopy_write_destination( remote_port, false); if (rc < 0) { struct se_cmd *src_cmd = &xop->src_pt_cmd->se_cmd; + ec_cmd->scsi_status = xpt_cmd->se_cmd.scsi_status; /* * If the failure happened before the t_mem_list hand-off in * target_xcopy_setup_pt_cmd(), Reset memory + clear flag so that @@ -729,6 +741,7 @@ static int target_xcopy_write_destination( rc = target_xcopy_issue_pt_cmd(xpt_cmd); if (rc < 0) { + ec_cmd->scsi_status = xpt_cmd->se_cmd.scsi_status; se_cmd->se_cmd_flags &= ~SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC; transport_generic_free_cmd(se_cmd, 0); return rc; @@ -815,9 +828,14 @@ static void target_xcopy_do_work(struct work_struct *work) out: xcopy_pt_undepend_remotedev(xop); kfree(xop); - - pr_warn("target_xcopy_do_work: Setting X-COPY CHECK_CONDITION -> sending response\n"); - ec_cmd->scsi_status = SAM_STAT_CHECK_CONDITION; + /* + * Don't override an error scsi status if it has already been set + */ + if (ec_cmd->scsi_status == SAM_STAT_GOOD) { + pr_warn_ratelimited("target_xcopy_do_work: rc: %d, Setting X-COPY" + " CHECK_CONDITION -> sending response\n", rc); + ec_cmd->scsi_status = SAM_STAT_CHECK_CONDITION; + } target_complete_cmd(ec_cmd, SAM_STAT_CHECK_CONDITION); } @@ -875,7 +893,7 @@ sense_reason_t target_do_xcopy(struct se_cmd *se_cmd) " tdll: %hu sdll: %u inline_dl: %u\n", list_id, list_id_usage, tdll, sdll, inline_dl); - rc = target_xcopy_parse_target_descriptors(se_cmd, xop, &p[16], tdll); + rc = target_xcopy_parse_target_descriptors(se_cmd, xop, &p[16], tdll, &ret); if (rc <= 0) goto out; diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c index 216e18cc9133..ff5de9a96643 100644 --- a/drivers/target/tcm_fc/tfc_cmd.c +++ b/drivers/target/tcm_fc/tfc_cmd.c @@ -572,10 +572,10 @@ static void ft_send_work(struct work_struct *work) if (target_submit_cmd(&cmd->se_cmd, cmd->sess->se_sess, fcp->fc_cdb, &cmd->ft_sense_buffer[0], scsilun_to_int(&fcp->fc_lun), ntohl(fcp->fc_dl), task_attr, data_dir, - TARGET_SCF_ACK_KREF)) + TARGET_SCF_ACK_KREF | TARGET_SCF_USE_CPUID)) goto err; - pr_debug("r_ctl %x alloc target_submit_cmd\n", fh->fh_r_ctl); + pr_debug("r_ctl %x target_submit_cmd %p\n", fh->fh_r_ctl, cmd); return; err: diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c index 6ffbb603d912..fd5c3de79470 100644 --- a/drivers/target/tcm_fc/tfc_sess.c +++ b/drivers/target/tcm_fc/tfc_sess.c @@ -39,6 +39,11 @@ #include "tcm_fc.h" +#define TFC_SESS_DBG(lport, fmt, args...) \ + pr_debug("host%u: rport %6.6x: " fmt, \ + (lport)->host->host_no, \ + (lport)->port_id, ##args ) + static void ft_sess_delete_all(struct ft_tport *); /* @@ -167,24 +172,29 @@ static struct ft_sess *ft_sess_get(struct fc_lport *lport, u32 port_id) struct ft_tport *tport; struct hlist_head *head; struct ft_sess *sess; + char *reason = "no session created"; rcu_read_lock(); tport = rcu_dereference(lport->prov[FC_TYPE_FCP]); - if (!tport) + if (!tport) { + reason = "not an FCP port"; goto out; + } head = &tport->hash[ft_sess_hash(port_id)]; hlist_for_each_entry_rcu(sess, head, hash) { if (sess->port_id == port_id) { kref_get(&sess->kref); rcu_read_unlock(); - pr_debug("port_id %x found %p\n", port_id, sess); + TFC_SESS_DBG(lport, "port_id %x found %p\n", + port_id, sess); return sess; } } out: rcu_read_unlock(); - pr_debug("port_id %x not found\n", port_id); + TFC_SESS_DBG(lport, "port_id %x not found, %s\n", + port_id, reason); return NULL; } @@ -195,7 +205,7 @@ static int ft_sess_alloc_cb(struct se_portal_group *se_tpg, struct ft_tport *tport = sess->tport; struct hlist_head *head = &tport->hash[ft_sess_hash(sess->port_id)]; - pr_debug("port_id %x sess %p\n", sess->port_id, sess); + TFC_SESS_DBG(tport->lport, "port_id %x sess %p\n", sess->port_id, sess); hlist_add_head_rcu(&sess->hash, head); tport->sess_count++; @@ -223,7 +233,7 @@ static struct ft_sess *ft_sess_create(struct ft_tport *tport, u32 port_id, sess = kzalloc(sizeof(*sess), GFP_KERNEL); if (!sess) - return NULL; + return ERR_PTR(-ENOMEM); kref_init(&sess->kref); /* ref for table entry */ sess->tport = tport; @@ -234,8 +244,9 @@ static struct ft_sess *ft_sess_create(struct ft_tport *tport, u32 port_id, TARGET_PROT_NORMAL, &initiatorname[0], sess, ft_sess_alloc_cb); if (IS_ERR(sess->se_sess)) { + int rc = PTR_ERR(sess->se_sess); kfree(sess); - return NULL; + sess = ERR_PTR(rc); } return sess; } @@ -319,7 +330,7 @@ void ft_sess_close(struct se_session *se_sess) mutex_unlock(&ft_lport_lock); return; } - pr_debug("port_id %x\n", port_id); + TFC_SESS_DBG(sess->tport->lport, "port_id %x close session\n", port_id); ft_sess_unhash(sess); mutex_unlock(&ft_lport_lock); ft_close_sess(sess); @@ -379,8 +390,13 @@ static int ft_prli_locked(struct fc_rport_priv *rdata, u32 spp_len, if (!(fcp_parm & FCP_SPPF_INIT_FCN)) return FC_SPP_RESP_CONF; sess = ft_sess_create(tport, rdata->ids.port_id, rdata); - if (!sess) - return FC_SPP_RESP_RES; + if (IS_ERR(sess)) { + if (PTR_ERR(sess) == -EACCES) { + spp->spp_flags &= ~FC_SPP_EST_IMG_PAIR; + return FC_SPP_RESP_CONF; + } else + return FC_SPP_RESP_RES; + } if (!sess->params) rdata->prli_count++; sess->params = fcp_parm; @@ -423,8 +439,8 @@ static int ft_prli(struct fc_rport_priv *rdata, u32 spp_len, mutex_lock(&ft_lport_lock); ret = ft_prli_locked(rdata, spp_len, rspp, spp); mutex_unlock(&ft_lport_lock); - pr_debug("port_id %x flags %x ret %x\n", - rdata->ids.port_id, rspp ? rspp->spp_flags : 0, ret); + TFC_SESS_DBG(rdata->local_port, "port_id %x flags %x ret %x\n", + rdata->ids.port_id, rspp ? rspp->spp_flags : 0, ret); return ret; } @@ -477,11 +493,11 @@ static void ft_recv(struct fc_lport *lport, struct fc_frame *fp) struct ft_sess *sess; u32 sid = fc_frame_sid(fp); - pr_debug("sid %x\n", sid); + TFC_SESS_DBG(lport, "recv sid %x\n", sid); sess = ft_sess_get(lport, sid); if (!sess) { - pr_debug("sid %x sess lookup failed\n", sid); + TFC_SESS_DBG(lport, "sid %x sess lookup failed\n", sid); /* TBD XXX - if FCP_CMND, send PRLO */ fc_frame_free(fp); return; |