diff options
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target.c | 118 | ||||
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_login.c | 9 | ||||
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_util.c | 5 | ||||
| -rw-r--r-- | drivers/target/target_core_alua.c | 6 | ||||
| -rw-r--r-- | drivers/target/target_core_configfs.c | 163 | ||||
| -rw-r--r-- | drivers/target/target_core_device.c | 4 | ||||
| -rw-r--r-- | drivers/target/target_core_pr.c | 33 | ||||
| -rw-r--r-- | drivers/target/target_core_pr.h | 1 | ||||
| -rw-r--r-- | drivers/target/target_core_tmr.c | 2 | ||||
| -rw-r--r-- | drivers/target/target_core_xcopy.c | 92 |
10 files changed, 287 insertions, 146 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 5ce6e2a40e00..59d32453b891 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -573,7 +573,8 @@ iscsit_xmit_nondatain_pdu(struct iscsi_conn *conn, struct iscsi_cmd *cmd, return 0; } -static int iscsit_map_iovec(struct iscsi_cmd *, struct kvec *, u32, u32); +static int iscsit_map_iovec(struct iscsi_cmd *cmd, struct kvec *iov, int nvec, + u32 data_offset, u32 data_length); static void iscsit_unmap_iovec(struct iscsi_cmd *); static u32 iscsit_do_crypto_hash_sg(struct ahash_request *, struct iscsi_cmd *, u32, u32, u32, u8 *); @@ -604,7 +605,8 @@ iscsit_xmit_datain_pdu(struct iscsi_conn *conn, struct iscsi_cmd *cmd, *header_digest); } - iov_ret = iscsit_map_iovec(cmd, &cmd->iov_data[1], + iov_ret = iscsit_map_iovec(cmd, &cmd->iov_data[iov_count], + cmd->orig_iov_data_count - (iov_count + 2), datain->offset, datain->length); if (iov_ret < 0) return -1; @@ -886,13 +888,10 @@ EXPORT_SYMBOL(iscsit_reject_cmd); * Map some portion of the allocated scatterlist to an iovec, suitable for * kernel sockets to copy data in/out. */ -static int iscsit_map_iovec( - struct iscsi_cmd *cmd, - struct kvec *iov, - u32 data_offset, - u32 data_length) +static int iscsit_map_iovec(struct iscsi_cmd *cmd, struct kvec *iov, int nvec, + u32 data_offset, u32 data_length) { - u32 i = 0; + u32 i = 0, orig_data_length = data_length; struct scatterlist *sg; unsigned int page_off; @@ -901,9 +900,12 @@ static int iscsit_map_iovec( */ u32 ent = data_offset / PAGE_SIZE; + if (!data_length) + return 0; + if (ent >= cmd->se_cmd.t_data_nents) { pr_err("Initial page entry out-of-bounds\n"); - return -1; + goto overflow; } sg = &cmd->se_cmd.t_data_sg[ent]; @@ -913,7 +915,12 @@ static int iscsit_map_iovec( cmd->first_data_sg_off = page_off; while (data_length) { - u32 cur_len = min_t(u32, data_length, sg->length - page_off); + u32 cur_len; + + if (WARN_ON_ONCE(!sg || i >= nvec)) + goto overflow; + + cur_len = min_t(u32, data_length, sg->length - page_off); iov[i].iov_base = kmap(sg_page(sg)) + sg->offset + page_off; iov[i].iov_len = cur_len; @@ -927,6 +934,16 @@ static int iscsit_map_iovec( cmd->kmapped_nents = i; return i; + +overflow: + pr_err("offset %d + length %d overflow; %d/%d; sg-list:\n", + data_offset, orig_data_length, i, nvec); + for_each_sg(cmd->se_cmd.t_data_sg, sg, + cmd->se_cmd.t_data_nents, i) { + pr_err("[%d] off %d len %d\n", + i, sg->offset, sg->length); + } + return -1; } static void iscsit_unmap_iovec(struct iscsi_cmd *cmd) @@ -1268,27 +1285,27 @@ iscsit_get_immediate_data(struct iscsi_cmd *cmd, struct iscsi_scsi_req *hdr, bool dump_payload) { int cmdsn_ret = 0, immed_ret = IMMEDIATE_DATA_NORMAL_OPERATION; + int rc; + /* * Special case for Unsupported SAM WRITE Opcodes and ImmediateData=Yes. */ - if (dump_payload) - goto after_immediate_data; - /* - * Check for underflow case where both EDTL and immediate data payload - * exceeds what is presented by CDB's TRANSFER LENGTH, and what has - * already been set in target_cmd_size_check() as se_cmd->data_length. - * - * For this special case, fail the command and dump the immediate data - * payload. - */ - if (cmd->first_burst_len > cmd->se_cmd.data_length) { - cmd->sense_reason = TCM_INVALID_CDB_FIELD; - goto after_immediate_data; + if (dump_payload) { + u32 length = min(cmd->se_cmd.data_length - cmd->write_data_done, + cmd->first_burst_len); + + pr_debug("Dumping min(%d - %d, %d) = %d bytes of immediate data\n", + cmd->se_cmd.data_length, cmd->write_data_done, + cmd->first_burst_len, length); + rc = iscsit_dump_data_payload(cmd->conn, length, 1); + pr_debug("Finished dumping immediate data\n"); + if (rc < 0) + immed_ret = IMMEDIATE_DATA_CANNOT_RECOVER; + } else { + immed_ret = iscsit_handle_immediate_data(cmd, hdr, + cmd->first_burst_len); } - immed_ret = iscsit_handle_immediate_data(cmd, hdr, - cmd->first_burst_len); -after_immediate_data: if (immed_ret == IMMEDIATE_DATA_NORMAL_OPERATION) { /* * A PDU/CmdSN carrying Immediate Data passed @@ -1301,12 +1318,9 @@ after_immediate_data: return -1; if (cmd->sense_reason || cmdsn_ret == CMDSN_LOWER_THAN_EXP) { - int rc; - - rc = iscsit_dump_data_payload(cmd->conn, - cmd->first_burst_len, 1); target_put_sess_cmd(&cmd->se_cmd); - return rc; + + return 0; } else if (cmd->unsolicited_data) iscsit_set_unsolicited_dataout(cmd); @@ -1568,14 +1582,16 @@ iscsit_get_dataout(struct iscsi_conn *conn, struct iscsi_cmd *cmd, { struct kvec *iov; u32 checksum, iov_count = 0, padding = 0, rx_got = 0, rx_size = 0; - u32 payload_length = ntoh24(hdr->dlength); + u32 payload_length; int iov_ret, data_crc_failed = 0; + payload_length = min_t(u32, cmd->se_cmd.data_length, + ntoh24(hdr->dlength)); rx_size += payload_length; iov = &cmd->iov_data[0]; - iov_ret = iscsit_map_iovec(cmd, iov, be32_to_cpu(hdr->offset), - payload_length); + iov_ret = iscsit_map_iovec(cmd, iov, cmd->orig_iov_data_count - 2, + be32_to_cpu(hdr->offset), payload_length); if (iov_ret < 0) return -1; @@ -1595,6 +1611,7 @@ iscsit_get_dataout(struct iscsi_conn *conn, struct iscsi_cmd *cmd, rx_size += ISCSI_CRC_LEN; } + WARN_ON_ONCE(iov_count > cmd->orig_iov_data_count); rx_got = rx_data(conn, &cmd->iov_data[0], iov_count, rx_size); iscsit_unmap_iovec(cmd); @@ -1860,6 +1877,7 @@ static int iscsit_handle_nop_out(struct iscsi_conn *conn, struct iscsi_cmd *cmd, rx_size += ISCSI_CRC_LEN; } + WARN_ON_ONCE(niov > ARRAY_SIZE(cmd->iov_misc)); rx_got = rx_data(conn, &cmd->iov_misc[0], niov, rx_size); if (rx_got != rx_size) { ret = -1; @@ -2265,6 +2283,7 @@ iscsit_handle_text_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, rx_size += ISCSI_CRC_LEN; } + WARN_ON_ONCE(niov > ARRAY_SIZE(iov)); rx_got = rx_data(conn, &iov[0], niov, rx_size); if (rx_got != rx_size) goto reject; @@ -2575,14 +2594,34 @@ static int iscsit_handle_immediate_data( u32 checksum, iov_count = 0, padding = 0; struct iscsi_conn *conn = cmd->conn; struct kvec *iov; + void *overflow_buf = NULL; - iov_ret = iscsit_map_iovec(cmd, cmd->iov_data, cmd->write_data_done, length); + BUG_ON(cmd->write_data_done > cmd->se_cmd.data_length); + rx_size = min(cmd->se_cmd.data_length - cmd->write_data_done, length); + iov_ret = iscsit_map_iovec(cmd, cmd->iov_data, + cmd->orig_iov_data_count - 2, + cmd->write_data_done, rx_size); if (iov_ret < 0) return IMMEDIATE_DATA_CANNOT_RECOVER; - rx_size = length; iov_count = iov_ret; iov = &cmd->iov_data[0]; + if (rx_size < length) { + /* + * Special case: length of immediate data exceeds the data + * buffer size derived from the CDB. + */ + overflow_buf = kmalloc(length - rx_size, GFP_KERNEL); + if (!overflow_buf) { + iscsit_unmap_iovec(cmd); + return IMMEDIATE_DATA_CANNOT_RECOVER; + } + cmd->overflow_buf = overflow_buf; + iov[iov_count].iov_base = overflow_buf; + iov[iov_count].iov_len = length - rx_size; + iov_count++; + rx_size = length; + } padding = ((-length) & 3); if (padding != 0) { @@ -2597,6 +2636,7 @@ static int iscsit_handle_immediate_data( rx_size += ISCSI_CRC_LEN; } + WARN_ON_ONCE(iov_count > cmd->orig_iov_data_count); rx_got = rx_data(conn, &cmd->iov_data[0], iov_count, rx_size); iscsit_unmap_iovec(cmd); @@ -3121,6 +3161,12 @@ int iscsit_build_r2ts_for_cmd( else xfer_len = conn->sess->sess_ops->MaxBurstLength; } + + if ((s32)xfer_len < 0) { + cmd->cmd_flags |= ICF_SENT_LAST_R2T; + break; + } + cmd->r2t_offset += xfer_len; if (cmd->r2t_offset == cmd->se_cmd.data_length) diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c index ae3209efd0e0..683d04580eb3 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -883,9 +883,6 @@ int iscsit_setup_np( return -EINVAL; } - np->np_ip_proto = IPPROTO_TCP; - np->np_sock_type = SOCK_STREAM; - ret = sock_create(sockaddr->ss_family, np->np_sock_type, np->np_ip_proto, &sock); if (ret < 0) { @@ -1159,13 +1156,13 @@ static struct iscsi_conn *iscsit_alloc_conn(struct iscsi_np *np) if (!zalloc_cpumask_var(&conn->conn_cpumask, GFP_KERNEL)) { pr_err("Unable to allocate conn->conn_cpumask\n"); - goto free_mask; + goto free_conn_ops; } return conn; -free_mask: - free_cpumask_var(conn->conn_cpumask); +free_conn_ops: + kfree(conn->conn_ops); put_transport: iscsit_put_transport(conn->conn_transport); free_conn: diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index 3ac494f63a0b..fae85bfd790e 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -67,6 +67,8 @@ int iscsit_add_r2t_to_list( lockdep_assert_held(&cmd->r2t_lock); + WARN_ON_ONCE((s32)xfer_len < 0); + r2t = kmem_cache_zalloc(lio_r2t_cache, GFP_ATOMIC); if (!r2t) { pr_err("Unable to allocate memory for struct iscsi_r2t.\n"); @@ -735,6 +737,7 @@ void iscsit_release_cmd(struct iscsi_cmd *cmd) kfree(cmd->pdu_list); kfree(cmd->seq_list); kfree(cmd->tmr_req); + kfree(cmd->overflow_buf); kfree(cmd->iov_data); kfree(cmd->text_in_ptr); @@ -769,6 +772,8 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown) struct se_cmd *se_cmd = cmd->se_cmd.se_tfo ? &cmd->se_cmd : NULL; int rc; + WARN_ON(!list_empty(&cmd->i_conn_node)); + __iscsit_free_cmd(cmd, shutdown); if (se_cmd) { rc = transport_generic_free_cmd(se_cmd, shutdown); diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c index e09f0cf86bed..893f1fe8e373 100644 --- a/drivers/target/target_core_alua.c +++ b/drivers/target/target_core_alua.c @@ -1760,8 +1760,10 @@ void core_alua_free_tg_pt_gp( * can be made while we are releasing struct t10_alua_tg_pt_gp. */ spin_lock(&dev->t10_alua.tg_pt_gps_lock); - list_del(&tg_pt_gp->tg_pt_gp_list); - dev->t10_alua.alua_tg_pt_gps_counter--; + if (tg_pt_gp->tg_pt_gp_valid_id) { + list_del(&tg_pt_gp->tg_pt_gp_list); + dev->t10_alua.alua_tg_pt_gps_count--; + } spin_unlock(&dev->t10_alua.tg_pt_gps_lock); /* diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index fc5ef31f5ba8..db2558fe8d46 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -1227,6 +1227,29 @@ static struct t10_wwn *to_t10_wwn(struct config_item *item) return container_of(to_config_group(item), struct t10_wwn, t10_wwn_group); } +static ssize_t target_check_inquiry_data(char *buf) +{ + size_t len; + int i; + + len = strlen(buf); + + /* + * SPC 4.3.1: + * ASCII data fields shall contain only ASCII printable characters + * (i.e., code values 20h to 7Eh) and may be terminated with one or + * more ASCII null (00h) characters. + */ + for (i = 0; i < len; i++) { + if (buf[i] < 0x20 || buf[i] > 0x7E) { + pr_err("Emulated T10 Inquiry Data contains non-ASCII-printable characters\n"); + return -EINVAL; + } + } + + return len; +} + /* * STANDARD and VPD page 0x83 T10 Vendor Identification */ @@ -1245,7 +1268,7 @@ static ssize_t target_wwn_vendor_id_store(struct config_item *item, unsigned char buf[INQUIRY_VENDOR_LEN + 2]; char *stripped = NULL; size_t len; - int i; + ssize_t ret; len = strlcpy(buf, page, sizeof(buf)); if (len < sizeof(buf)) { @@ -1260,19 +1283,10 @@ static ssize_t target_wwn_vendor_id_store(struct config_item *item, return -EOVERFLOW; } - /* - * SPC 4.3.1: - * ASCII data fields shall contain only ASCII printable characters (i.e., - * code values 20h to 7Eh) and may be terminated with one or more ASCII - * null (00h) characters. - */ - for (i = 0; i < len; i++) { - if ((stripped[i] < 0x20) || (stripped[i] > 0x7E)) { - pr_err("Emulated T10 Vendor Identification contains" - " non-ASCII-printable characters\n"); - return -EINVAL; - } - } + ret = target_check_inquiry_data(stripped); + + if (ret < 0) + return ret; /* * Check to see if any active exports exist. If they do exist, fail @@ -1295,6 +1309,118 @@ static ssize_t target_wwn_vendor_id_store(struct config_item *item, return count; } +static ssize_t target_wwn_product_id_show(struct config_item *item, + char *page) +{ + return sprintf(page, "%s\n", &to_t10_wwn(item)->model[0]); +} + +static ssize_t target_wwn_product_id_store(struct config_item *item, + const char *page, size_t count) +{ + struct t10_wwn *t10_wwn = to_t10_wwn(item); + struct se_device *dev = t10_wwn->t10_dev; + /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ + unsigned char buf[INQUIRY_MODEL_LEN + 2]; + char *stripped = NULL; + size_t len; + ssize_t ret; + + len = strlcpy(buf, page, sizeof(buf)); + if (len < sizeof(buf)) { + /* Strip any newline added from userspace. */ + stripped = strstrip(buf); + len = strlen(stripped); + } + if (len > INQUIRY_MODEL_LEN) { + pr_err("Emulated T10 Vendor exceeds INQUIRY_MODEL_LEN: " + __stringify(INQUIRY_MODEL_LEN) + "\n"); + return -EOVERFLOW; + } + + ret = target_check_inquiry_data(stripped); + + if (ret < 0) + return ret; + + /* + * Check to see if any active exports exist. If they do exist, fail + * here as changing this information on the fly (underneath the + * initiator side OS dependent multipath code) could cause negative + * effects. + */ + if (dev->export_count) { + pr_err("Unable to set T10 Model while active %d exports exist\n", + dev->export_count); + return -EINVAL; + } + + BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); + strlcpy(dev->t10_wwn.model, stripped, sizeof(dev->t10_wwn.model)); + + pr_debug("Target_Core_ConfigFS: Set emulated T10 Model Identification: %s\n", + dev->t10_wwn.model); + + return count; +} + +static ssize_t target_wwn_revision_show(struct config_item *item, + char *page) +{ + return sprintf(page, "%s\n", &to_t10_wwn(item)->revision[0]); +} + +static ssize_t target_wwn_revision_store(struct config_item *item, + const char *page, size_t count) +{ + struct t10_wwn *t10_wwn = to_t10_wwn(item); + struct se_device *dev = t10_wwn->t10_dev; + /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ + unsigned char buf[INQUIRY_REVISION_LEN + 2]; + char *stripped = NULL; + size_t len; + ssize_t ret; + + len = strlcpy(buf, page, sizeof(buf)); + if (len < sizeof(buf)) { + /* Strip any newline added from userspace. */ + stripped = strstrip(buf); + len = strlen(stripped); + } + if (len > INQUIRY_REVISION_LEN) { + pr_err("Emulated T10 Revision exceeds INQUIRY_REVISION_LEN: " + __stringify(INQUIRY_REVISION_LEN) + "\n"); + return -EOVERFLOW; + } + + ret = target_check_inquiry_data(stripped); + + if (ret < 0) + return ret; + + /* + * Check to see if any active exports exist. If they do exist, fail + * here as changing this information on the fly (underneath the + * initiator side OS dependent multipath code) could cause negative + * effects. + */ + if (dev->export_count) { + pr_err("Unable to set T10 Revision while active %d exports exist\n", + dev->export_count); + return -EINVAL; + } + + BUILD_BUG_ON(sizeof(dev->t10_wwn.revision) != INQUIRY_REVISION_LEN + 1); + strlcpy(dev->t10_wwn.revision, stripped, sizeof(dev->t10_wwn.revision)); + + pr_debug("Target_Core_ConfigFS: Set emulated T10 Revision: %s\n", + dev->t10_wwn.revision); + + return count; +} + /* * VPD page 0x80 Unit serial */ @@ -1442,6 +1568,8 @@ DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); CONFIGFS_ATTR(target_wwn_, vendor_id); +CONFIGFS_ATTR(target_wwn_, product_id); +CONFIGFS_ATTR(target_wwn_, revision); CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); @@ -1450,6 +1578,8 @@ CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device); static struct configfs_attribute *target_core_dev_wwn_attrs[] = { &target_wwn_attr_vendor_id, + &target_wwn_attr_product_id, + &target_wwn_attr_revision, &target_wwn_attr_vpd_unit_serial, &target_wwn_attr_vpd_protocol_identifier, &target_wwn_attr_vpd_assoc_logical_unit, @@ -1494,11 +1624,12 @@ static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, char *page) { + struct se_session *sess = dev->reservation_holder; struct se_node_acl *se_nacl; ssize_t len; - se_nacl = dev->dev_reserved_node_acl; - if (se_nacl) { + if (sess) { + se_nacl = sess->se_node_acl; len = sprintf(page, "SPC-2 Reservation: %s Initiator: %s\n", se_nacl->se_tpg->se_tpg_tfo->fabric_name, diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 1f8482b6473b..7eae1c823c4e 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -85,7 +85,7 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun) goto out_unlock; } - se_cmd->se_lun = rcu_dereference(deve->se_lun); + se_cmd->se_lun = se_lun; se_cmd->pr_res_key = deve->pr_res_key; se_cmd->orig_fe_lun = unpacked_lun; se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; @@ -176,7 +176,7 @@ int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u64 unpacked_lun) goto out_unlock; } - se_cmd->se_lun = rcu_dereference(deve->se_lun); + se_cmd->se_lun = se_lun; se_cmd->pr_res_key = deve->pr_res_key; se_cmd->orig_fe_lun = unpacked_lun; se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 1597a9ebadca..03767693f580 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -111,10 +111,10 @@ target_scsi2_reservation_check(struct se_cmd *cmd) break; } - if (!dev->dev_reserved_node_acl || !sess) + if (!dev->reservation_holder || !sess) return 0; - if (dev->dev_reserved_node_acl != sess->se_node_acl) + if (dev->reservation_holder->se_node_acl != sess->se_node_acl) return TCM_RESERVATION_CONFLICT; if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID) { @@ -200,6 +200,16 @@ static int target_check_scsi2_reservation_conflict(struct se_cmd *cmd) return 0; } +void target_release_reservation(struct se_device *dev) +{ + dev->reservation_holder = NULL; + dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS; + if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID) { + dev->dev_res_bin_isid = 0; + dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS_WITH_ISID; + } +} + sense_reason_t target_scsi2_reservation_release(struct se_cmd *cmd) { @@ -217,21 +227,16 @@ target_scsi2_reservation_release(struct se_cmd *cmd) return TCM_RESERVATION_CONFLICT; spin_lock(&dev->dev_reservation_lock); - if (!dev->dev_reserved_node_acl || !sess) + if (!dev->reservation_holder || !sess) goto out_unlock; - if (dev->dev_reserved_node_acl != sess->se_node_acl) + if (dev->reservation_holder->se_node_acl != sess->se_node_acl) goto out_unlock; if (dev->dev_res_bin_isid != sess->sess_bin_isid) goto out_unlock; - dev->dev_reserved_node_acl = NULL; - dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS; - if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID) { - dev->dev_res_bin_isid = 0; - dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS_WITH_ISID; - } + target_release_reservation(dev); tpg = sess->se_tpg; pr_debug("SCSI-2 Released reservation for %s LUN: %llu ->" " MAPPED LUN: %llu for %s\n", @@ -275,13 +280,13 @@ target_scsi2_reservation_reserve(struct se_cmd *cmd) tpg = sess->se_tpg; spin_lock(&dev->dev_reservation_lock); - if (dev->dev_reserved_node_acl && - (dev->dev_reserved_node_acl != sess->se_node_acl)) { + if (dev->reservation_holder && + dev->reservation_holder->se_node_acl != sess->se_node_acl) { pr_err("SCSI-2 RESERVATION CONFLIFT for %s fabric\n", tpg->se_tpg_tfo->fabric_name); pr_err("Original reserver LUN: %llu %s\n", cmd->se_lun->unpacked_lun, - dev->dev_reserved_node_acl->initiatorname); + dev->reservation_holder->se_node_acl->initiatorname); pr_err("Current attempt - LUN: %llu -> MAPPED LUN: %llu" " from %s \n", cmd->se_lun->unpacked_lun, cmd->orig_fe_lun, @@ -290,7 +295,7 @@ target_scsi2_reservation_reserve(struct se_cmd *cmd) goto out_unlock; } - dev->dev_reserved_node_acl = sess->se_node_acl; + dev->reservation_holder = sess; dev->dev_reservation_flags |= DRF_SPC2_RESERVATIONS; if (sess->sess_bin_isid != 0) { dev->dev_res_bin_isid = sess->sess_bin_isid; diff --git a/drivers/target/target_core_pr.h b/drivers/target/target_core_pr.h index 198fad5c89dc..a31c93e4e19c 100644 --- a/drivers/target/target_core_pr.h +++ b/drivers/target/target_core_pr.h @@ -58,6 +58,7 @@ extern struct kmem_cache *t10_pr_reg_cache; extern void core_pr_dump_initiator_port(struct t10_pr_registration *, char *, u32); +extern void target_release_reservation(struct se_device *dev); extern sense_reason_t target_scsi2_reservation_release(struct se_cmd *); extern sense_reason_t target_scsi2_reservation_reserve(struct se_cmd *); extern int core_scsi3_alloc_aptpl_registration( diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c index 3a1bb799a9ab..344df737f3a3 100644 --- a/drivers/target/target_core_tmr.c +++ b/drivers/target/target_core_tmr.c @@ -390,7 +390,7 @@ int core_tmr_lun_reset( if (!preempt_and_abort_list && (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)) { spin_lock(&dev->dev_reservation_lock); - dev->dev_reserved_node_acl = NULL; + dev->reservation_holder = NULL; dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS; spin_unlock(&dev->dev_reservation_lock); pr_debug("LUN_RESET: SCSI-2 Released reservation\n"); diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c index 9be1418e919f..e59a896ac58a 100644 --- a/drivers/target/target_core_xcopy.c +++ b/drivers/target/target_core_xcopy.c @@ -389,7 +389,6 @@ out: */ struct xcopy_pt_cmd { - bool remote_port; struct se_cmd se_cmd; struct completion xpt_passthrough_sem; unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER]; @@ -506,72 +505,20 @@ void target_xcopy_release_pt(void) destroy_workqueue(xcopy_wq); } -static void target_xcopy_setup_pt_port( - struct xcopy_pt_cmd *xpt_cmd, - struct xcopy_op *xop, - bool remote_port) -{ - struct se_cmd *ec_cmd = xop->xop_se_cmd; - struct se_cmd *pt_cmd = &xpt_cmd->se_cmd; - - if (xop->op_origin == XCOL_SOURCE_RECV_OP) { - /* - * Honor destination port reservations for X-COPY PUSH emulation - * when CDB is received on local source port, and READs blocks to - * WRITE on remote destination port. - */ - if (remote_port) { - xpt_cmd->remote_port = remote_port; - } else { - pt_cmd->se_lun = ec_cmd->se_lun; - pt_cmd->se_dev = ec_cmd->se_dev; - - pr_debug("Honoring local SRC port from ec_cmd->se_dev:" - " %p\n", pt_cmd->se_dev); - pt_cmd->se_lun = ec_cmd->se_lun; - pr_debug("Honoring local SRC port from ec_cmd->se_lun: %p\n", - pt_cmd->se_lun); - } - } else { - /* - * Honor source port reservation for X-COPY PULL emulation - * when CDB is received on local desintation port, and READs - * blocks from the remote source port to WRITE on local - * destination port. - */ - if (remote_port) { - xpt_cmd->remote_port = remote_port; - } else { - pt_cmd->se_lun = ec_cmd->se_lun; - pt_cmd->se_dev = ec_cmd->se_dev; - - pr_debug("Honoring local DST port from ec_cmd->se_dev:" - " %p\n", pt_cmd->se_dev); - pt_cmd->se_lun = ec_cmd->se_lun; - pr_debug("Honoring local DST port from ec_cmd->se_lun: %p\n", - pt_cmd->se_lun); - } - } -} - -static void target_xcopy_init_pt_lun(struct se_device *se_dev, - struct se_cmd *pt_cmd, bool remote_port) -{ - /* - * Don't allocate + init an pt_cmd->se_lun if honoring local port for - * reservations. The pt_cmd->se_lun pointer will be setup from within - * target_xcopy_setup_pt_port() - */ - if (remote_port) { - pr_debug("Setup emulated se_dev: %p from se_dev\n", - pt_cmd->se_dev); - pt_cmd->se_lun = &se_dev->xcopy_lun; - pt_cmd->se_dev = se_dev; - } - - pt_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; -} - +/* + * target_xcopy_setup_pt_cmd - set up a pass-through command + * @xpt_cmd: Data structure to initialize. + * @xop: Describes the XCOPY operation received from an initiator. + * @se_dev: Backend device to associate with @xpt_cmd if + * @remote_port == true. + * @cdb: SCSI CDB to be copied into @xpt_cmd. + * @remote_port: If false, use the LUN through which the XCOPY command has + * been received. If true, use @se_dev->xcopy_lun. + * @alloc_mem: Whether or not to allocate an SGL list. + * + * Set up a SCSI command (READ or WRITE) that will be used to execute an + * XCOPY command. + */ static int target_xcopy_setup_pt_cmd( struct xcopy_pt_cmd *xpt_cmd, struct xcopy_op *xop, @@ -583,12 +530,19 @@ static int target_xcopy_setup_pt_cmd( struct se_cmd *cmd = &xpt_cmd->se_cmd; sense_reason_t sense_rc; int ret = 0, rc; + /* * Setup LUN+port to honor reservations based upon xop->op_origin for * X-COPY PUSH or X-COPY PULL based upon where the CDB was received. */ - target_xcopy_init_pt_lun(se_dev, cmd, remote_port); - target_xcopy_setup_pt_port(xpt_cmd, xop, remote_port); + if (remote_port) { + cmd->se_lun = &se_dev->xcopy_lun; + cmd->se_dev = se_dev; + } else { + cmd->se_lun = xop->xop_se_cmd->se_lun; + cmd->se_dev = xop->xop_se_cmd->se_dev; + } + cmd->se_cmd_flags |= SCF_SE_LUN_CMD; cmd->tag = 0; sense_rc = target_setup_cmd_from_cdb(cmd, cdb); |